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Journal of Diagnostics Concepts & Practice    2021, 20 (04): 317-337.   DOI: 10.16150/j.1671-2870.2021.04.001 Abstract （10235）   HTML （553）    PDF（pc） （3337KB）（9667）       Knowledge map    Save Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Journal of Diagnostics Concepts & Practice    2021, 20 (04): 401-406.   DOI: 10.16150/j.1671-2870.2021.04.014 Abstract （204）   HTML （5）    PDF（pc） （551KB）（4459）       Knowledge map    Save Reference | Related Articles | Metrics | Comments（0）

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Interpretation of the Global Tuberculosis Report 2022 by World Health Organization LIANG Chen, YU Jiajia, TANG Shenjie Journal of Diagnostics Concepts & Practice    2023, 22 (01): 21-30.   DOI: 10.16150/j.1671-2870.2023.01.004 Abstract （1005）   HTML （43）    PDF（pc） （1105KB）（2912）       Knowledge map    Save Global Tuberculosis Report 2022 (hereafter referred to as “report”), newly published by the World Health Organization (WHO), states that the coronavirus (COVID-19) pandemic has increased the tuberculosis (TB) disease burden and severely affected global TB prevention and control. In 2021, WHO approved a total of six molecular diagnostic technologies for TB diagnosis and anti-TB drug resistance detection, and three new TB antigen-based skin tests for TB screening were recommended. To reduce the burden on patients and the health system, WHO recommends a 4-month regimen for drug-susceptible TB and four shorter regimens for the treatment of multidrug-resistant/rifampicin-resistant tuberculosis (MDR/RR-TB). In addition, there were 26 drugs for TB treatment in clinical trials, and at least 22 clinical trials evaluating drugs and drug regimens for TB treatment were underway. In 2021， the TB epidemic remains severe in China, with the number of newly diagnosed cases ranking third among the 30 countries. In 2021, a total of 639 548 TB cases and 1 763 deaths were reported nationwide, with an incidence of 45.37/100 000 and a mortality of 0.13/100 000. China has the fourth largest number of MDR/RR-TB patients in the world. However, it is necessary to verify whether the regimens for MDR/RR-TB treatment recommended by WHO are suitable for patients in China. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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New knowledge of prophylaxis and treatment about cancer-associated thrombosis DING Yongjie, ZHANG Liu, LI Qingyun Journal of Diagnostics Concepts & Practice    2023, 22 (04): 323-331.   DOI: 10.16150/j.1671-2870.2023.04.001 Abstract （168）   HTML （13）    PDF（pc） （946KB）（2429）       Knowledge map    Save Cancer-associated thrombosis (CAT) is the second leading cause of death in cancer patients, second only to the progression of the tumor. It leads to extended hospitalization and re-hospitalization, resulting in a serious social medical burden. Tumor-specific gene mutations such as JAK2, ALK, and KRAS mutations are closely related to the risk of CAT in patients with solid tumors. Patients treated with immune checkpoint inhibitors have a high risk of CAT, with a 1-year cumulative incidence rate of 10.86%. Therefore, accurate risk assessment is important. The Khorana risk score (KRS) is the first model to assess CAT risk and has been validated in several studies. The new generation models are based on the improvement of KRS, but they have not yet undergone large-scale external verification, such as the Vienna CAT model, PROTECHT model, and CONKO model. Due to the strong correlation between tumors and CAT, several CAT-related prevention guidelines have been established domestically and abroad. All of these guidelines recommend that patients undergo preventive anticoagulation therapy after tumor surgery. Low molecular weight heparin (LMWH) is the most widely used anticoagulant drug to prevent CAT. New oral anticoagulants (NOAC) are also used to prevent CAT, despite the incidence of hemorrhaging increases, the overall benefits to patients outweigh the risks. The strategy for treating CAT is complex. For patients with non-gastrointestinal tumors, NOAC can be used as a first-line drug, while LMWH is recommended for anticoagulation in patients with gastrointestinal tumors. Since CAT patients receive anticoagulation and anti-tumor therapy at the same time, drug interactions need to be considered to avoid drug-induced bleeding, especially the impact of combined medication on NOAC pharmacokinetics. The ideal length of anticoagulation therapy for CAT remains unclear. Guidelines recommend that patients with CAT should indefinitely continue the anticoagulation therapy after completing 3 to 6 months of initial anticoagulation therapy. Therefore, when determining the course of anticoagulation therapy for cancer patients, physicians should evaluate the risk of recurrence of thrombosis and bleeding, and optimize the treatment plan. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Interpretation of Multiple Myeloma Guidelines update (version 2， 2023) of National Comprehensive Cancer Network （NCCN） TAO Yi, MI Jianqing Journal of Diagnostics Concepts & Practice    2023, 22 (02): 121-126.   DOI: 10.16150/j.1671-2870.2023.02.003 Abstract （1207）   HTML （52）    PDF（pc） （1042KB）（2369）       Knowledge map    Save Multiple myeloma (MM) is the second most common hematological malignancy. With the continuous advent of new drugs, the survival of MM patients has been significantly improved, with a median survival of 7-10 years. However, the overall survival of high-risk MM patients is still less than 3 years, and extending the survival of high-risk MM has always been a hot topic in this field. The National Comprehensive Cancer Network (NCCN) released the 2nd version of the MM guidelines for 2023 (2023. v2). Compared with the 5th edition of the MM guidelines for 2022, the update of this guideline in diagnosis is mainly reflected in the detailed description of high-risk MM in tabular form, including both cytogenetic high-risk factors containing 1q21 gain/amplification and clinical high-risk factors, such as extramedullary disease, renal failure and weakness. In terms of treatment, the updated guideline still emphasizes the importance of autologous hematopoietic stem cell transplantation in the era of new drugs, and indicates that the judgment of whether patients are suitable for transplantation needs to be dynamically adjusted based on the patients’ condition after initial treatment. 2023. v2 upgrades the recommendation of the new generation proteasome inhibitor carfilzomib in initial induction and CD38 monoclonal antibody in maintenance therapy. The combinations of these new drugs with immunomodulatory drug pomalidomide are also listed as the preferred regimens in relapsed patients. The diagnostic techniques for distinguishing high-risk MM and new drugs recommended in the updated guideline are currently available in China, Which greatly enhanc our confidence in the “clinical cure” of MM. A comprehensive interpretation of the 2023. v2 of the guidelines is expected to improve the diagnostic and therapeutic level of clinicians, and further improve the prognosis of China’s MM patient population, especially high-risk patients. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Clinical characteristics and risk factor analysis of 118 patients with cerebral venous sinus thrombosis LI Lei, WU Xi, DAI Jing, WU Wenman, DING Qiulan, WANG Xuefeng Journal of Diagnostics Concepts & Practice    2023, 22 (03): 261-269.   DOI: 10.16150/j.1671-2870.2023.03.09 Abstract （131）   HTML （9）    PDF（pc） （991KB）（2332）       Knowledge map    Save Objective: To analyze the clinical characteristics and thrombotic risk factors of cerebral venous sinus thrombosis (CVST) in Chinese population, in order to provide reference for the clinical diagnosis, prevention and treatment of CVST. Methods: A total of 118 CVST patients who visited the Thrombosis and Hemostasis Clinic of Ruijin Hospital from January in 2015 to December in 2022 were enrolled. The clinical data, imaging characteristics, and thrombotic gene panel were collected, and independent risk factors for thrombosis, recurrence, and multi-site thrombosis in CVST patients were studied through univariate and multivariate logistic regression. Results: Among 118 CVST patients, 88.1% (104/118) patients firstly developed CVST at age younger than 45 years old.It revealed that 57.6% patients (68/118) only suffered CVST once,and 33.1% patients (39/118) experienced thrombotic events at least twice, while 37.3% patients (44/118) suffered multi-site venous thromboembolism (VTE). The superior sagittal sinus was the most common venous sinus to form thrombosis (77/118), and multi-sites of venous sinus were involved simultaneously in 54.2% patients (64/118). The risk factor screening for thrombophilia showed that 70.3% patients (83/118) carried at least one thrombotic risk factor, including 53.3% patients (63/118) with inherited risk factors and 32.2% patients (38/118) with acquired risk factors. The main risk factors for males were anticoagulant protein deficiency (35/66) and antiphospholipid syndrome (5/66), while the risk factors for females mainly included anticoagulant protein deficiency (20/52), pregnancy/postpartum period (11/47), and contraceptive use (5/47). Among 35 patients with unknown risk factors, more than 30% of them experienced recurrent or multi-site thrombosis, and the underlying etiology in these patients still need to be further investigated. Univariate and multivariate logistic regression analysis showed that both inherited risk factors (odds ratio, OR=21.643, 95% confidence interval， CI 9.455-49.544, P<0.0001) and acquired risk factors (OR=10.836, 95% CI 4.306-27.270, P<0.0001) were independent risk factors for the occurrence of CVST. Genetic risk factor (OR=2.270, 95% CI 1.021-5.048, P=0.044) was an independent risk factor for recurrent thrombosis in CVST patients. Conclusions: In Chinese population, CVST is more common in middle-aged and young populations.，with 70.3% patients carrying at least one thrombotic risk factor. Genetic risk factors are the main cause of CVST in China and the detectable rate is 53.3%, which is significantly higher than that (22%) reported abroad. The patients with genetic risk factors have a significantly increased risk of developing CVST or recurrent thrombosis. Identification of thrombotic risk factors, prevention, diagnosis and treatment should be carried out earlier for individuals with high-risk CVST. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Chinese interpretation of Japanese Gastric Cancer Treatment Guidelines 2021 (6th edition) and Ruijin clinical practice YAN Chao, LU Sheng, YAN Min, ZHU Zhenggang Journal of Surgery Concepts & Practice    2023, 28 (04): 326-354.   DOI: 10.16139/j.1007-9610.2023.04.010 Abstract （929）   HTML （23）    PDF（pc） （4954KB）（2286）       Knowledge map    Save “Japanese Gastric Cancer Treatment Guidelines” have been important guidelines for the treatment of gastric cancer in Japan and worldwide. The English version “Japanese Gastric Cancer Treatment Guidelines 2021 (6th Edition)” published in January 2023 consists of two parts. The first part includes diagnostic and treatment methods, such as surgery, endoscopic resection, chemotherapy, follow-up. The second part addresses clinical issues, including recommendations and explanations for clinical hot topics. This article will provide a Chinese interpretation of the guidelines and briefly introduce our hospital's clinical practice in the diagnosis and treatment of gastric cancer. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Interpretation on the report of global stroke data 2022 TANG Chunhua, GUO Lu, LI Qiong, ZHANG Lili Journal of Diagnostics Concepts & Practice    2023, 22 (03): 238-246.   DOI: 10.16150/j.1671-2870.2023.03.06 Abstract （2693）   HTML （138）    PDF（pc） （2270KB）（2038）       Knowledge map    Save In 2022, the World Stroke Organization released two new reports regarding global stroke statistics in the International Journal of Stroke. The reports updated the global incidence and mortality of stroke, evaluated the effects of gender and geographic factors, and provided updated statistics on attributable risk factors associated with stroke. This article briefly interprets the two reports in the context of stroke prevalence and disease burden in China. 2019 Global Burden of Disease Study findings show that stroke remains the second-leading cause of death and the third-leading cause of death and disability combined in the world. From 1990 to 2019, the burden (in terms of the absolute number of cases) increased substantially, with the bulk of the global stroke burden residing in lower-income and lower-middle-income countries. Moreover, people under 70-year-old were observed to have significant increases in stroke prevalence and incidence. The five major risks for stroke globally include high systolic blood pressure, high body mass index, high fasting glucose, environmental particulate matter pollution, and smoking. Stroke prevention and treatment in China are facing great challenges. Stroke has become the leading cause of death and disability among Chinese adults, as well as the leading cause of disability adjusted life year lost. The incidence, prevalence and mortality of stroke in China are geographically high in the north, low in the south and prominent in the central part of the country; the prevalence is higher in rural areas than that in urban areas; the morbidity and mortality rates are higher in men than those in women; the average age of onset is lower than in developed countries; the overall disease burden of ischemic stroke is on the rise, but that of hemorrhagic stroke is on the decline. The awareness of stroke prevention and treatment was low. In conclusion, it is of strategic importance to actively establish a graded stroke prevention and control system that meets the national conditions. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Interpretation of the Clinical Practice Guidelines for Non-small Lung Cancer (version 4 and version 5) of 2022 National Comprehensive Cancer Nerwork(NCCN) CHEN Guoqun, CAI Jiaodi Journal of Diagnostics Concepts & Practice    2023, 22 (01): 8-13.   DOI: 10.16150/j.1671-2870.2023.01.002 Abstract （598）   HTML （28）    PDF（pc） （900KB）（1946）       Knowledge map    Save Lung cancer is the leading cause of cancer-related deaths worldwide, with approximately 1.8 million patients dying of lung cancer each year, accounting for 18.0% of all cancer deaths. Non-small cell lung cancer (NSCLC) is the main type of lung cancer and accounts for more than 85% of all lung cancer patients. In China, more than 700 000 new cases of lung cancer are diagnosed each year, and more than 600 000 patients die of lung cancer, accounting for 21.7% of all cancer deaths. In 2022, the National Comprehensive Cancer Network (NCCN) updated the guidelines for clinical diagnosis and treatment of lung cancer. Compared with the third edition of the guidelines, the fourth edition of the guidelines added the reference significance of ERBB2 (HER2) mutation in the diagnosis and treatment of （NSCLC）. The updated content was mainly focused on the detection of HER2 mutation as a standard biomarker and the treatment of patients with HER2 mutation. The detection of HER2 mutation is recommended for patients with metastatic NSCLC. Fam-trastuzumab deruxtecan and trastuzumab emtansine are recommended as second-line treatment options for patients with HER2 mutation. However, both are in clinical trials in China. The treatment strategies for NSCLC patients with HER2 mutations need to be considered comprehensively in light of the actual situation, and more data from domestic trials are needed. The fifth edition of the guidelines expanded the use of nivolumab, marking new progress in the study of immune checkpoint inhibitors. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Report on diagnosis and treatment of hemophilia in China 2023 XUE Feng, DAI Jing, CHEN Lixia, LIU Wei, ZHANG Houqiang, WU Runhui, SUN Jing, ZHANG Xinsheng, WU Jingsheng, ZHAO Yongqiang, WANG Xuefeng, YANG Renchi Journal of Diagnostics Concepts & Practice    2023, 22 (02): 89-115.   DOI: 10.16150/j.1671-2870.2023.02.001 Abstract （2361）   HTML （70）    PDF（pc） （1494KB）（1822）       Knowledge map    Save In recent years, China attaches great importance to the prevention and treatment of rare diseases. As one of the representative diseases of rare diseases, management of Hemophilia has made great progress in China. From 1986 to 1989, the National Hemophilia Cooperative Group conducted China's hemophilia epidemiological survey according to the unified method and standard, and the results showed that the prevalence of hemophilia was 2.73/100 000, and there was no statistical difference in prevalence among different regions. In 2014, Meta-analysis showed that the prevalence of hemophilia in China was 2.8/100 000, and in 2018, based on the data of the urban population of Tianjin, the local prevalence of hemophilia was estimated to be 3.09/100 000. With the comprehensive promotion of the construction of hemophilia hierarchical diagnosis and treatment system, China requires that hospitals applying for hemophilia comprehensive management centers and diagnosis and treatment centers must be able to independently carry out screening tests and confirmatory tests related to hemophilia diagnosis. For diagnosis of hemophilia, most laboratories in China usually adopt the one-stage method (coagulation method) based on the activated partial thromboplastin time (APTT) for the determination of coagulation factor activity, but it should be noted that more than two activity detection methods are required for some special types of hemophilia. The types of each mutation in the F8 gene of patients in China are similar to those reported in international data, and the mutations in the F9 gene of our patients are mainly single base point mutations, with no mutation hotspots found. As of June 2023, a total of more than 40 000 cases with inherited bleeding disorders registered in 261 centers in China (including hemophilia), through the National Hemophilia Registration System. The history of hemophilia treatment in China has been explored through inadequate on-demand and low-dose prophylaxis, and is now moving towards higher-dose prophylaxis and individualized prophylaxis with higher efficacy. Based on the above registry data and literature, this report comprehensively summarizes the progress of basic and clinical research and medical protection in the field of hemophilia in China, and analyzes the shortcomings for further improvement of hemophilia diagnosis and treatment in China. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Journal of Diagnostics Concepts & Practice    2021, 20 (04): 349-355.   DOI: 10.16150/j.1671-2870.2021.04.004 Abstract （875）   HTML （26）    PDF（pc） （766KB）（1774）       Knowledge map    Save Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Interpretation of clinical practice guidelines for myelodysplastic syndrome (version 1, 2023) of National Comprehensive Cancer Nerwork(NCCN) SONG Luqian, CHANG Chunkang Journal of Diagnostics Concepts & Practice    2023, 22 (02): 116-120.   DOI: 10.16150/j.1671-2870.2023.02.002 Abstract （320）   HTML （17）    PDF（pc） （904KB）（1702）       Knowledge map    Save Myelodysplastic syndrome (MDS) is a diverse and common group of myeloid malignant clonal diseases in the hematologic system, with different classification and grouping, clinical manifestations and natural course, and the iteration of different classification systems and versions in history, resulting distress in the correct diagnosis, classification and treatment options. The National Comprehensive Cancer Network (NCCN) released the first version （2023） of Clinical Practice Guidelines for MDS in September 2022. The guideline is based on the clinical practice and standards of high-level evidence and the latest research progress, and its attracts wide attention from clinicians worldwide. Currently, many clinicians in China have insufficient understanding of MDS, and there is still a certain gap with the international diagnosis and treatment level of MDS. This paper interprets the content of the new guidelines, and compares it with the previous guidelines, in order to provide a reference for the standardized diagnosis and treatment of MDS at the current stage in China. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Advances in surgical treatment of hepatocellular carcinoma HUANG Jiwei, QIU Guoteng, ZENG Yong Journal of Surgery Concepts & Practice    2022, 27 (02): 113-118.   DOI: 10.16139/j.1007-9610.2022.02.005 Abstract （196）   HTML （1）    PDF（pc） （554KB）（1548）       Knowledge map    Save Reference | Related Articles | Metrics | Comments（0）

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Value of proton and heavy ion radiotherapy in treatment of retroperitoneal sarcoma WANG Zheng, BAO Cihang, JIANG Guoliang Journal of Surgery Concepts & Practice    2022, 27 (06): 506-510.   DOI: 10.16139/j.1007-9610.2022.06.05 Abstract （301）   HTML （14）    PDF（pc） （826KB）（1541）       Knowledge map    Save Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Review of Research on Condition Assessment of Nuclear Power Plant Equipment Based on Data-Driven XU Yong, CAI Yunze, SONG Lin Journal of Shanghai Jiao Tong University    2022, 56 (3): 267-278.   DOI: 10.16183/j.cnki.jsjtu.2021.502 Abstract （3873）   HTML （319）    PDF（pc） （1383KB）（1374）       Knowledge map    Save The condition assessment of the entire life cycle of nuclear power equipment has a significant impact on improving the safety and economy of nuclear power plants. In the past, operation and maintenance of systems, equipment, and structures of domestic nuclear power plants, mostly relied on the alarm mechanism of equipments, the simple threshold judgments of parameters, or the empirical judgments of engineers. With the implementation of online monitoring system in nuclear power plants, a large number of equipment operation data have been accumulated, and the use of data-driven technology to assess the health of equipment has become the focus of attention in the industry. In this paper, the current situation of the online monitoring system of nuclear power equipment was introduced and the common malfunction of nuclear power equipment was analyzed. The condition assessment of nuclear power equipment were categorized into three major problems (i.e., anomaly detection, life prediction, and fault diagnosis), the situation of research and application were summarized respectively, and the application potential of deep learning technology in this field was emphasized. Based on this, the challenges and possible solutions to the condition assessment of nuclear power plant equipment were further analyzed. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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The Overall Approach to Studying Translator Groups:A Review of A Study on English Translators of Jiangsu Classic Literature FENG Quangong Contemporary Foreign Languages Studies    2022, 22 (1): 153-160.   DOI: 10.3969/j.issn.1674-8921.2022.01.013 Abstract （328）   HTML （24）    PDF（pc） （1396KB）（1344）       Knowledge map    Save Nowadays translator studies are greatly emphasized and a large number of relevant research achievements are produced. However, studies on translator groups are relatively few, which should be strengthened in the future. Xu Duo’s monograph A Study on English Translators of Jiangsu Classic Literature, as a typical achievement of studies on translator groups, investigates the translation views, cultural position, translation motives, translation selection and translation features of five translators of Jiangsu classic literature like David Hawkes, John Minford, Moss Roberts, Sidney Shapiro and Yang Xianyi. This paper discusses the overall approach on the study of translator groups mainly by analyzing and commenting on Xu Duo’s monograph, such as the selection of research object and methods, the progression of research blueprint, the realization of research conclusion and so on. It is suggested that emphasis be placed on the investigation of shared features of translator groups and the light shed by translator group studies on current translation practice. Reference | Related Articles | Metrics | Comments（0）

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Dynamics Modeling and Validation of Coaxial Lifting Rotors HU Jinshuo, HUANG Jianzhe Journal of Shanghai Jiao Tong University    2022, 56 (3): 395-402.   DOI: 10.16183/j.cnki.jsjtu.2021.044 Abstract （4134）   HTML （108）    PDF（pc） （2567KB）（1299）       Knowledge map    Save The dynamics model for coaxial lifting rotors can be used to study the controller design and flight simulation for coaxial-rotor aerial vehicles. However, both the computational efficiency and the accuracy should be considered. First, the computational model of the induced velocity of lifting rotor everywhere including the wake region is derived based on adjoint theorem. Then, the finite state dynamics model for coaxial lifting rotors with wake skew considered is developed by extending the finite state inflow model for single rotor. Finally, the equations for calculating the thrust of coaxial lifting rotors in the hover condition are given, and the test is conducted. The results show that the computational complexity of the proposed dynamics model for coaxial lifting rotors is acceptable, and the computational thrusts are almost close to the test results when the rotational speed is within a certain range, which can also reflect the trend of the thrust lost for coaxial lifting rotors. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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John Sinclair's Phrase Theory and Study of Meaning PU Jianzhong Contemporary Foreign Languages Studies    2021, 21 (6): 60-76.   DOI: 10.3969/j.issn.1674-8921.2021.06.007 Abstract （945）   HTML （9）    PDF（pc） （1892KB）（1266）       Knowledge map    Save This paper aims to discuss John Sinclair's phrase theory and its key concepts, his major contributions to the study of meaning, and the inadequacies as well. It is argued that Sinclair's major achievements in the study of meaning can be attributed to his phrase theory, that its core components are phraseological items and lexical items, that his model of extended unit of meaning, consisting of core, collocation, colligation, semantic preference and semantic prosody, can be applied to the description of both lexical items and phraseological items. Sinclair's major contributions to the study of meaning include that to a great extent he turned the linguists' attention from context to cotext, that he developed and improved the KWIC analysis, upon which the model of extended unit of meaning was formulated, that he put forward the theoretical framework of his phrase theory, getting theoretically ready for the study of meaning. The inadequacies are that the notion of semantic prosody is still vague, preventing the model of extended unit of meaning from being fully exploited, and that paraphrase has not been theoretically evaluated, resulting in language users' meaning not being reflected in his study of meaning. Reference | Related Articles | Metrics | Comments（0）

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A Review of Coupled Electricity and Hydrogen Energy System with Transportation System Under the Background of Large-Scale New Energy Vehicles Access LI Jiaqi, XU Xiaoyuan, Yan Zheng Journal of Shanghai Jiao Tong University    2022, 56 (3): 253-266.   DOI: 10.16183/j.cnki.jsjtu.2021.464 Abstract （4206）   HTML （950）    PDF（pc） （2106KB）（1231）       Knowledge map    Save The large-scale utilization of renewable energy is an important way to achieve the “double carbon targets”. The technology of coupled renewable energy with hydrogen system can improve the consumption rate of renewable energy and the penetration of new energy vehicles. The coupling between the electricity-hydrogen energy system and the transportation system will be even closer in the future. Based on the access of large-scale new energy vehicles, first, the development of the electricity and hydrogen energy system was summarized, and the three working modes of electricity-hydrogen coupling system including hydrogen production, output smoothing, and coordinated operation with electricity network were introduced. Then, the research status of the electricity-transportation coupling system on planning and optimal operation, and the problems of hydrogen-transportation coupling system on hydrogen refueling station optimization and hydrogen transportation were analyzed. Finally, in combination with the existing bottlenecks, the future feasible research directions such as dynamic model construction and the influence of uncertain factors were proposed. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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An Identification Method for DC-Link Capacitor Capacitance of Grid Connected Inverter ZHU Chenghao, WANG Han, SUN Guoqi, WEI Xiaobin, WANG Fuwen, CAI Xu Journal of Shanghai Jiao Tong University    2022, 56 (6): 693-700.   DOI: 10.16183/j.cnki.jsjtu.2021.515 Abstract （1045）   HTML （1284）    PDF（pc） （5050KB）（1230）       Knowledge map    Save DC-link for the capacitor is one of the most vulnerable components of the grid connected converter, whose capacitance identification will help to improve the system reliability by finding and replacing the aging capacitor in time. An identification method for the DC-link capacitor capacitance of the grid connected inverter based on pre-charging circuit is proposed. By analyzing the relationship between the capacitance and the charging current, charging voltage during pre-charging process, and combining the historical operating data, the set of capacitance state feature vector is built. The support vector regression (SVR) model is trained and the regression prediction relationship between the state value and the capacitance is set. The model is optimized by using the particle swarm optimization (PSO) algorithm, which can be used for capacitance identification of the DC-link capacitor. Simulation and experiments results show that the proposed method can implement the accurate capacitance identification of the DC-link capacitor of the grid connected inverter, with an identification error of less than 0.95%. This method does not need to add hardware circuit and change the control algorithm, and has a certain practical value. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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The fifth edition of WHO classification of digestive system tumors: update and progress on biliary system tumors LUO Fangxiu, MA Qianchen, YUAN Fei Journal of Surgery Concepts & Practice    2023, 28 (02): 124-131.   DOI: 10.16139/j.1007-9610.2023.02.08 Abstract （702）   HTML （18）    PDF（pc） （3365KB）（1218）       Knowledge map    Save Overall, there was little change in biliary system tumors of the 5th edition of WHO classification of digestive system tumors after update. The three-tiered classification of biliary intraepithelial neoplasia changed to two-tiered system: high-grade and low-grade, in the section of benign tumors and precancerous lesions. And both intracholecystic and intraductal papillary tumors associated with invasive carcinoma were added. The classification of intrahepatic bile duct tumors introduced parts of bile duct adenoma and bile duct adenofibroma, which were mentioned previously in the differential diagnosis with bile duct carcinoma. Intrahepatic cholangiocarcinoma was divided into small bile duct subtype and large bile duct subtype in the 5th edition of WHO classification, and the names of cholangiocellular carcinoma and cholangiole cell carcinoma were no longer recommended to use. Extrahepatic cholangiocarcinoma was listed as a separate part for the first time, including squamous cell carcinoma, adenosquamous carcinoma and undifferentiated carcinoma in addition to common histological types. Some new contents of molecular pathology in the 5th edition of WHO classification were added, which provided the basis for precise classification and diagnosis of tumors in biliary system. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Challenges of Distributed Green Energy Carbon Trading Mechanism and Carbon Data Management LI Xingzhi, HAN Bei, LI Guojie, WANG Keyou, XU Jin Journal of Shanghai Jiao Tong University    2022, 56 (8): 977-993.   DOI: 10.16183/j.cnki.jsjtu.2021.450 Abstract （1017）   HTML （893）    PDF（pc） （2604KB）（1189）       Knowledge map    Save To achieve the double carbon goal of “carbon peaking and carbon neutrality”, the construction of the power system which is based on the green energy needs to be accelerated. With the growth of the system scale, the distributed green energy carbon trading mechanism and the carbon data management technology based on the blockchain technology can effectively encourage the development of green energy and become effective means for the implementation of low-carbon electricity. The accurate and real-time carbon emission calculation will further provide data support for the accuracy and security of carbon trading information. First, the current research status of green certificate trading and carbon asset management is introduced. Next, the adaptability analysis of the key technologies of the blockchain technology in the four directions of green electricity traceability, green certificate trading, carbon trading, and joint market of green certificate and carbon assets is performed. Afterwords, the specific mathematical models of carbon emission calculation is studied, and the data availability of carbon source traceability methods applicable to the blockchain architecture are discussed. Finally, some suggestions for the future development of carbon emission flow analysis are proposed. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Multi-Objective Optimization Strategy of Trajectory Planning for Unmanned Aerial Vehicles Considering Constraints of Safe Flight Corridors HUANG Yuhao, HAN Chao, ZHAO Minghui, DU Qiankun, WANG Shigang Journal of Shanghai Jiao Tong University    2022, 56 (8): 1024-1033.   DOI: 10.16183/j.cnki.jsjtu.2021.154 Abstract （796）   HTML （41）    PDF（pc） （5684KB）（1085）       Knowledge map    Save Aimed at the problem of generating a smooth, safe, and dynamically feasible continuous-time trajectory for unmanned aerial vehicles (UAV) in complex environments, a trajectory planning algorithm is proposed to minimize a multi-objective function based on safe flight corridors. The safe flight corridor represented by a collection of convex polyhedra is built based on the initial discrete waypoints generated by the improved rapidly-exploring random tree(RRT), namely the RRT* algorithm. The safety objective function is established according to the constraints of limiting the trajectory inside safe flight corridors. In combination with the flight smoothness, dynamic characteristics, and time performance, a multi-objective function is built. The gradient-based convex optimization algorithm is used to derive the continuous-time trajectory expressed as a piece-wise polynomial by optimizing the position, velocity, acceleration of waypoints, and time allocation. The effectiveness and performance of the proposed algorithm is tested and compared under complex environments such as the coal mine. The test results demonstrate that the proposed algorithm has a better comprehensive performance in comparison with existing algorithms. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Research progress of miRNA-206 on lung diseases ZHANG Lulu, WU Qiannan, HUO Rujie, et al Journal of Internal Medicine Concepts & Practice    2022, 17 (05): 413-417.   DOI: 10.16138/j.1673-6087.2022.05.014 Abstract （157）   HTML （5）    PDF（pc） （507KB）（1067）       Knowledge map    Save Reference | Related Articles | Metrics | Comments（0）

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Journal of Internal Medicine Concepts & Practice    2021, 16 (03): 220-224.   DOI: 10.16138/j.1673-6087.2021.03.018 Abstract （183）   HTML （5）    PDF（pc） （531KB）（1052）       Knowledge map    Save Reference | Related Articles | Metrics | Comments（0）

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Distributed Photovoltaic Net Load Forecasting in New Energy Power Systems LIAO Qishu, HU Weihao, CAO Di, HUANG Qi, CHEN Zhe Journal of Shanghai Jiao Tong University    2021, 55 (12): 1520-1531.   DOI: 10.16183/j.cnki.jsjtu.2021.244 Abstract （1582）   HTML （235）    PDF（pc） （69168KB）（1050）       Knowledge map    Save To respond to the demand of achieving carbon peaking and carbon neutrality goals, and to construct a complete “source-grid-load-storage” new energy power system, a distributed photovoltaic net load forecasting model based on Hamiltonian Monte Carlo inference for deep Gaussian processes (HMCDGP) is proposed. First, direct and indirect forecasting methods are used to examine the accuracy of the proposed model and to obtain spot forecasting results. Then, the proposed model is used to perform probability forecasting experiments and produce interval prediction results. Finally, the superiority of the proposed model is verified through the comparative experiments based on the net load data of 300 households recorded by Australia Grid. After obtaining the exact net load probabilistic forecasting results, the photovoltaic production can be fully utilized via power dispatch, which can reduce the use of fossil energy and further reduce the carbon emission. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Electric vehicle charging situation awareness for charging station ultra-short-term load forecast SHI Yiwei1 (史一炜), LIU Zeyu1 (刘泽宇), FENG Donghan1∗ (冯冬涵), ZHOU Yun1∗ (周 云), ZHANG Kaiyu2 (张开宇), LI Hengjie3 (李恒杰) J Shanghai Jiaotong Univ Sci    2023, 28 (1): 28-38.   DOI: 10.1007/s12204-023-2566-2 Abstract （259）      PDF（pc） （1518KB）（1048）       Knowledge map    Save Electric vehicles (EVs) are expected to be key nodes connecting transportation–electricity–communication networks. Advanced automotive electronics technologies enhance EVs’ perception, computing, and communication capacity, which in turn can boost the operational efficiency of intelligent transportation systems (ITSs). EVs couple the ITS to the power system, providing a promising solution to charging congestion and transformer overload via navigation and forecasting approaches. This study proposes a privacy-preserving EV charging situation awareness framework and method to forecast the ultra-short-term load of charging stations. The proposed method only relies on public information from commercial service providers. In the case study, data are powered by the Baidu LBS cloud and EV-SGCC platform, and the experiment is conducted within an area of Pudong New District in Shanghai. Based on the results, the charging load of charging stations can be adequately forecasted more than 1 min ahead with low communication and computing power requirements. This research provides the basis for further studies on operation optimization and electricity market transaction of charging stations. Reference | Related Articles | Metrics | Comments（0）

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Interpretation of the Clinical Practice Guidelines for Lung Cancer Screening (version 2) of 2022 National Comprehensive Cancer Network（NCCN） YANG Wenjie, YAN Fuhua Journal of Diagnostics Concepts & Practice    2023, 22 (01): 14-20.   DOI: 10.16150/j.1671-2870.2023.01.003 Abstract （363）   HTML （13）    PDF（pc） （919KB）（1042）       Knowledge map    Save The National Comprehensive Cancer Network (NCCN) updated the Clinical Practice Guidelines for Lung Cancer Screening (version 2. 2022). In this version, only two factors, age and smoking history, are used to stratify people into high and low risk groups. Individuals aged ≥50 years with a smoking history ≥20 pack per year are at high risk for lung cancer. Low-dose CT (LDCT) screening is recommended for high-risk individuals. The NCCN guidelines are based on the data of randomized trials conducted in the North American population, whose lung cancer disease spectrum differs from that of the Chinese population in terms of disease characteristics and risk factors. Therefore, Chinese physicians should refer to the 2022 NCCN guidelines combined with the characteristics of the Chinese population in clinical practice. In China, individuals are at high risk for lung cancer if they are aged 50-75 years with at least one additional risk factor (≥20 pack/year smoking history, secondhand smoke exposure, occupational exposure, cancer history or family history of lung cancer, disease history of COPD or pulmonary fibrosis). The benefits of lung cancer screening include decreasing lung cancer mortality, improving life quality, and detecting other hidden health risks (breast cancer, thyroid nodules, asymptomatic coronary artery disease, aortic aneurysms, etc). The use of lung nodule risk calculators by multidisciplinary teams with expertise in thoracic radiology, pulmonary medicine, and thoracic surgery for risk assessment is recommended. The disadvantages of lung cancer screening include over-screening or even ineffective screening for indolent lesions, and ineffective screening for small invasive tumors. It suggests that Chinese physicians need to consider the actual situation, weigh the pros and cons, and seek optimal decision-making. Reference | Related Articles | Metrics | Comments（0）

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Interpretation of guidelines for the diagnosis and treatment of primary osteoporosis (2022 version) in China: essential introduction ZHANG Zhenlin, YUE Hua, LI Mei, XIA Weibo Journal of Diagnostics Concepts & Practice    2023, 22 (03): 230-233.   DOI: 10.16150/j.1671-2870.2023.03.04 Abstract （381）   HTML （8）    PDF（pc） （913KB）（999）       Knowledge map    Save China is now witnessing an accelerated aging process，and active reaction is an important issue that we are facing. Osteoporosis and the resulting fractures are particularly noteworthy. In order to further standardize the diagnosis and treatment of primary osteoporosis, the Osteoporosis and Bone Mineral Disease Branch of the Chinese Medical Association has developed and released the “Guidelines for the Diagnosis and Treatment of Primary Osteoporosis (2022 Version)” based on the epidemiological characteristics and pathogenesis of the Chinese population, which combined high-quality medical research evidence from both domestic and foreign sources. Based on evidence-based medicine evidence, and clinical practice in China, this article will focus on the interpretation of two key clinical issues in the new version of the guidelines, namely “fracture risk stratification and treatment selection” and “treatment course of anti-osteoporosis drugs”. Regarding the risk of fractures, this guideline divides it into high and extremely high fracture risks, cancels the classification of low and medium risks, and for one of the extremely high fracture risk indicators “recent brittle fractures”，defines “recent” as “24 months”.Given that the FRAX model underestimates the fracture risk of Chinese patients, it is proposed to develop a highly operational fracture risk stratification criteria in clinical practice. Regarding drug treatment, patients who use bisphosphonates should be fully evaluated before entering the medication holiday, and regular follow-up is still required. Although the Food and Drug Administration (FDA) of the United States has lifted the warning of osteosarcoma and 24- month treatment limit for terlipide, the user manual of the drug in China still suggests a treatment period of 24 months. This guideline is based on high-quality evidence-based medical evidence both domestically and internationally, and may provide reference and research directions for clinical practice. Reference | Related Articles | Metrics | Comments（0）

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Development Pathway of China’s Clean Electricity Under Carbon Peaking and Carbon Neutrality Goals HUANG Qiang, GUO Yi, JIANG Jianhua, MING Bo Journal of Shanghai Jiao Tong University    2021, 55 (12): 1499-1509.   DOI: 10.16183/j.cnki.jsjtu.2021.272 Abstract （1677）   HTML （525）    PDF（pc） （1849KB）（990）       Knowledge map    Save Nowadays, the third energy revolution has taken place. Many developed countries have formulated clean energy development strategies and announced the time for phasing out thermal and nuclear power to reduce carbon emissions. Meanwhile, China has made a commitment to the world that the carbon emissions of China will peak before 2030, and the carbon neutrality will be achieved before 2060. Therefore, it is of great significance to study the development pathway of clean electricity of China. The reserves and characteristics of clean energy such as hydro, wind, and solar in China are analyzed. The medium and long-term power demand of China is projected, and the power system structure in 2030 and 2050 are respectively estimated based on the electric power and energy balance equations. In addition, the trend of carbon emissions is also analyzed. Some suggestions are proposed to guide the development of China’s clean electricity. The results indicate that the “carbon peaking” of China’s power system would arrive in 2027, and the clean electricity of China is projected to exceed 50% of the total energy production in 2030. Thermal and nuclear power can be replaced by clean electricity such as hydro, wind, and solar energy in 2050, the power industry will achieve “zero CO2 emission”, and the transformation of the green power system will be achieved in response to carbon peaking and carbon neutrality goals. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Decision-Making Method of Intelligent Vehicles: A Survey HU Yikai, WANG Chunxiang, YANG Ming Journal of Shanghai Jiao Tong University    2021, 55 (8): 1035-1048.   DOI: 10.16183/j.cnki.jsjtu.2020.387 Abstract （1001）   HTML （31）    PDF（pc） （1687KB）（978）       Knowledge map    Save Combined with the current research status of the intelligent vehicle decision-making methods at home and abroad, this paper classifies and summarizes decision-making methods from four aspects: decision input and output, environment interaction, and algorithm types. Besides, it analyzes their advantages and disadvantages, and evaluates applicable scenarios. Moreover, it surveyes the common data sets and current evaluation standards which are used for decision-making researches. Furthermore it discusses the technical difficulties faced by current decision-making methods and future development trends. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Optimization of Active Distribution Network Operation Considering Decarbonization Endowment from 5G Base Stations ZENG Bo, MU Hongwei, DONG Houqi, ZENG Ming Journal of Shanghai Jiao Tong University    2022, 56 (3): 279-292.   DOI: 10.16183/j.cnki.jsjtu.2021.367 Abstract （4214）   HTML （388）    PDF（pc） （3102KB）（972）       Knowledge map    Save The massive access of 5G base stations (5G BSs) provides new possibilities for the low-carbon development of future power systems. By incentivizing 5G BSs to participate in demand response and incorporating them into the existing active distribution network (ADN) operation framework, the cost of the electricity consumption of 5G BSs can be reduced while promoting the consumption and efficient use of renewable energy sources (RES). This paper proposes a multi-objective interval optimization model for ADN operation considering low-carbon empowerment of 5G BSs. Based on the interaction mode between 5G BSs and the distribution network, a 5G BSs operating flexibility description model is constructed, and the system dynamics method is used to reveal the mechanism of 5G BSs on carbon emission reduction on the distribution side. Taking the minimization of system operating cost and carbon emissions as the goals, and considering the constraints for both the distribution network and the communication network, a multi-objective optimization model for ADN operation with 5G BSs is established. The model cooptimizes the dispatch of RES and 5G equipment, and adopts an interval method to consider the uncertainty of RES output and communication loads, which can achieve simultaneous optimization of system economy and low-carbon benefits. Combining the equivalent transformation and the non-dominated sorting genetic algorithm to solve the problem, the results of numerical studies prove the effectiveness of the proposed method. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Circulation Control of Airfoil Aerodynamic Force Under Ground Effect of Wavy Wall LIU Hao, SUN Jianhong, SUN Zhi, TAO Yang, WANG Dechen, LIU Guangyuan Journal of Shanghai Jiao Tong University    2022, 56 (8): 1101-1110.   DOI: 10.16183/j.cnki.jsjtu.2021.384 Abstract （616）   HTML （34）    PDF（pc） （3280KB）（933）       Knowledge map    Save The interaction of airflow and sea waves seriously affects the flight stability and cruising safety of ground effect vehicles. The influence of different sea states and different angles of attack were analyzed numerically on the aerodynamic characteristics of the airfoil under ground effect of wavy wall. The influence of the constant blowing and periodic blowing methods was further studied on the aerodynamic force of the airfoil under ground effect. The simulation results show that the lift coefficient of the airfoil changes periodically with the wave under the wavy ground wall. The amplitude of the lift coefficient fluctuation is larger with the increasing of wave height and angle of attack, or the decreasing of wavelength. Applying the circulation control method for periodic blowing in the same period as the relative motion of the waves can effectively weaken the fluctuation of the airfoil lift coefficient under wavy sea conditions and improve the flight stability and safety of ground effect vehicles. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Lung cancer worldwide and in China from 1990 to 2020: prevalence and prevention measures WANG Zezhou, ZHENG Ying Journal of Diagnostics Concepts & Practice    2023, 22 (01): 1-7.   DOI: 10.16150/j.1671-2870.2023.01.001 Abstract （945）   HTML （38）    PDF（pc） （946KB）（928）       Knowledge map    Save From 1990 to 2020, the number of newly diagnosed cases of lung cancer in the world continued to grow, but the prevalence remained stable. As time went, the incidence （world standard incidence, adjusted with age structure of world population） of lung cancer changed in gender, region, age, and histological type. The difference between male and female in incidence continued to narrow, with male incidence declining by 12.5% and female incidence rising by 22.3%. There were obvious regional differences in the incidence of lung cancer. From 1998 to 2012, the incidence of male lung cancer in Europe, Asia and North America showed a downward trend (the average annual change percentages were -1.6%, -0.6% and -2.5%， respectively), while the incidence of female lung cancer showed a upward trend except North America. From 1998 to 2012, the average age of lung cancer patients in all regions of the world showed a trend of increasing year by year. The average age at diagnosis of lung cancer in Asian men increased from 67.21 years in 1998 to 69.14 years in 2012. Patterns of histological types of lung cancer have also changed. Since the early 1980s, the proportion of squamous cell lung cancer has declined. Since 2004, adenocarcinoma has become the most common histological type of lung cancer in the world. In 2020, China had the largest cases of newly diagnosed lung cancer in the world. From 1989 to 2008, urban-rural ratio of lung cancer incidence dropped from 2.07 to 1.14. In economically underdeveloped areas, the incidence of lung cancer was also rising, and the situation in some areas with high incidence of lung cancer had been controlled. China, as the largest tobacco producer and consumer country, has to be serious with the control of tobacco. Risk of lung cancer caused by environmental pollution is gradually lower. Controlling occupational exposure is also the key to preventing lung cancer in China, and establishing a mornitoring network for risk factors is the direction in future. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Research and Application of Key Technologies of Network Security Situation Awareness for Smart Grid Power Control Systems ZHANG Liang, QU Gang, LI Huixing, JIN Haochun Journal of Shanghai Jiao Tong University    2021, 55 (S2): 103-109.   DOI: 10.16183/j.cnki.jsjtu.2021.S2.017 Abstract （1232）   HTML （23）    PDF（pc） （9257KB）（875）       Knowledge map    Save The network security situational awareness (NSSA) technology, which can perceive the potential network security risks globally and dynamically, is receiving more and more attention.With the help of machine learning, artificial intelligence, big data, and the other technologies, the network security situation awareness solution of power control system can learn from the process of the long-term and massive network security situation data, gain insight into the internal logical relationship implied in the data, and realize the abnormal behavior identification, intrusion intention understanding, and impact assessment of various activities in the power business network. First, the basic concept and the logical block diagram of NSSA are introduced. Then, the current situation and the risk of network security of power control system are summarized. Next, aimed at these risks and deficiencies, the key technologies involved in the network security situation awareness platform from the perspective of practice are expounded, which include the multidimensional security event correlation analysis model,the abnormal traffic and abnormal behavior detection method based on “baseline learning”,the attack chain recognition model based on attack scenario,and the power remote control security technology based on “address self verification”. Finally, the situation awareness solution and its application in power monitoring systems are stated and prospected. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Evaluation of facial injection filling materials for medical aesthetics ZHAO Chenyu, LI Chongchong, SUN Xue, et al Journal of Tissue Engineering and Reconstructive Surgery    2023, 19 (5): 517-.   Abstract （176）      PDF（pc） （874KB）（872）       Knowledge map    Save With economic development and technological progress, the demand for medical aesthetics has increased sig nificantly, and medical biomaterials are widely used. It is necessary to further improve the evaluation of their effectiveness and safety. At present, the evaluation of its physicochemical properties and biology is adopted in China. However, the clinical effec tiveness is a multi-faceted evaluation without unified criteria. Most of the evaluation mainly adopts objective indicators for quan titative analysis, while subjective feelings are secondary criteria. In this paper, the main facial fillers and the evaluation methods of their physicochemical properties were reviewed. Related Articles | Metrics | Comments（0）

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Underwater Image Enhancement Based on Generative Adversarial Networks LI Yu, YANG Daoyong, LIU Lingya, WANG Yiyin Journal of Shanghai Jiao Tong University    2022, 56 (2): 134-142.   DOI: 10.16183/j.cnki.jsjtu.2021.075 Abstract （2010）   HTML （59）    PDF（pc） （22386KB）（869）       Knowledge map    Save This paper proposes an underwater image correction and enhancement algorithm based on generative adversarial networks. In this algorithm, the multi-scale kernel is applied to the improved residual module to construct a generator, which realizes the extraction and fusion of multiple receptive fields feature information. The discriminator design considers the relationship between global information and local details, and establishes a global-region dual discriminator structure, which can ensure the consistency of overall style and edge texture. An unsupervised loss function based on human visual sensory system is proposed. Reference image constraints are not required, and the confrontation loss and the content loss are jointly optimized to obtain better color and structure performance. Experimental evaluations on multiple data sets show that the proposed algorithm can better correct color deviation and contrast, protect details from loss, and is superior to typical algorithms in subjective and objective indexes. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Design of Light Fireproof Enclosure Bulkheads Based on Topography Optimization for Cruise Ships ZHANG Fan, YANG Deqing, QIU Weiqiang Journal of Shanghai Jiao Tong University    2021, 55 (10): 1175-1187.   DOI: 10.16183/j.cnki.jsjtu.2020.201 Abstract （866）   HTML （571）    PDF（pc） （19957KB）（857）       Knowledge map    Save In order to develop a new lightweight enclosure structure with an excellent fireproof and bearing performance, and to replace the traditional stiffened fire enclosure bulkheads in the superstructure area, a design method of light fireproof enclosure bulkheads for cruise ship based on the topography optimization technology was proposed. The location and numbers of corrugated beads in lightweight wall designed by this method were generated according to the requirements of load bearing capacity and manufacturing process, and this method overcomes the disadvantages that the location and numbers of beads in the design of conventional corrugated wall have to be determined in advance. Aimed at the specified design regions, the lightweight of cruise fireproof enclosure bulkheads (CFEB) structure was taken as the objective function while the stress in the weld zone, the stress in the nonweld zone, and the first-order buckling factor of CFEB were taken as constraints. Then, the topography design models of CFEB were established and solved. Feasible configurations were obtained by topography optimization, and the final configurations of CFEB were formed by secondary design. The mechanical properties of the final configurations were compared with the traditional stiffened fireproof bulkheads. It is concluded that the new CFEB has advantages of lightweight and good strength compared with the traditional stiffened fireproof bulkheads. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Comparative Analysis of Technical Standards for Offshore Wind Power via VSC-HVDC YU Hao, ZHANG Zhemeng, PENG Sui, ZHANG Zhiqiang, REN Wanxin, LI Canbing Journal of Shanghai Jiao Tong University    2022, 56 (4): 403-412.   DOI: 10.16183/j.cnki.jsjtu.2021.465 Abstract （1834）   HTML （1064）    PDF（pc） （1110KB）（852）       Knowledge map    Save This paper introduces the current situation of domestic and foreign offshore wind power grid-connected via voltage source converter based high voltage direct current(VSC-HVDC) transmission standards, and selects representative standards of offshore wind power grid-connected via VSC-HVDC. It also compares the domestic and foreign offshore wind power grid in terms of power control, fault ride-through, power quality, stability, etc., and analyzes the development trend of offshore wind power grid-connected via VSC-HVDC standards. In order to promote the development of offshore wind power industry, it provides reasonable suggestions for the formulation and revision of Chinese offshore wind power grid-connected via VSC-HVDC standards. Table and Figures | Reference | Related Articles | Metrics | Comments（0）

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Interpretation of the 5th edition WHO classification and staging of digestive system tumors: colorectal tumors YU Yingyan Journal of Surgery Concepts & Practice    2021, 26 (04): 312-317.   DOI: 10.16139/j.1007-9610.2021.04.008 Abstract （1118）   HTML （54）    PDF（pc） （589KB）（850）       Knowledge map    Save Table and Figures | Reference | Related Articles | Metrics | Comments（0）