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Hybrid Multi-Infeed Interaction Factor Calculation Method Considering Voltage Regulation Control Characteristics of Voltage Source Converter

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Energy Engineering 2024年第8期121卷 2257-2273页

作者： Shan Liu Chengbin Chi Fengze Han Yanan Wu lin zhu Tuo Wang State Grid Smart Grid Research Institute State Grid Corporation of ChinaBeijing102209China School of Electric Power Engineering Northeast Electric Power UniversityJilin132012China

Voltage source converter based high voltage direct current(VSC-HVDC)can participate in voltage regulation by flexible control to help maintain the voltage stability of the power *** order to quantitatively evaluate its influence on the voltage interaction between VSC-HVDC and line commutated converter based high voltage direct current(LCC-HVDC),this paper proposes a hybrid multi-infeed interaction factor(HMIIF)calculation method considering the voltage regulation control characteristics of ***,for a hybrid multi-infeed high voltage direct current system,an additional equivalent operating admittance matrix is constructed to characterize HVDC equipment characteristics under small ***,based on the characteristic curve between the reactive power and the voltage of a certain VSC-HVDC project,the additional equivalent operating admittance of VSC-HVDC is *** additional equivalent operating admittance matrix calculation method is ***,the equivalent bus impedance matrix is obtained by modifying the alternating current(AC)system admittance matrix with the additional equivalent operating admittance *** this basis,the HMIIF calculation method based on the equivalent bus impedance ratio is ***,the effectiveness of the proposed method is verified in a hybrid dual-infeed high voltage direct current system constructed in Power Systems Computer Aided Design(PSCAD),and the influence of voltage regulation control on HMIIF is analyzed.

关键词： Hybrid multi-infeed high voltage direct current system hybrid multi-infeed interaction factor control modes equivalent node impedance ratio voltage interaction characteristics

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Machine learning identifies the risk of complications after laparoscopic radical gastrectomy for gastric cancer

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World Journal of Gastroenterology 2024年第1期30卷 79-90页

作者： Qing-Qi Hong Su Yan Yong-Liang Zhao lin Fan Li Yang Wen-Bin Zhang Hao Liu He-Xin lin Jian Zhang Zhi-Jian Ye xian Shen Li-Sheng Cai Guo-Wei Zhang Jia-Ming zhu Gang Ji Jin-Ping Chen Wei Wang Zheng-Rong Li Jing-Tao zhu Guo-Xin Li Jun You Department of Gastrointestinal Oncology Surgery The First Affiliated Hospital of Xiamen UniversitySchool of MedicineXiamen 361001Fujian ProvinceChina Department of Gastrointestinal Surgery Qinghai University Affiliated HospitalXining 810000Qinghai ProvinceChina Department of General Surgery and Center of Minimal Invasive Gastrointestinal Surgery The First Hospital Affiliated to Army Medical UniversityChongqing 400038China Department of General Surgery The First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061Shaanxi ProvinceChina Department of General Surgery The First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029Jiangsu ProvinceChina Department of Gastrointestinal Surgery The First Affiliated Hospital of Xinjiang Medical UniversityUrmuqi 830054Xinjiang Uygur Autonomous RegionChina Department of General Surgery Nanfang HospitalSouthern Medical UniversityGuangzhou 510515Guangdong ProvinceChina Department of Gastrointestinal Surgery Affiliated Hangzhou First People's HospitalZhejiang University School of MedicineHangzhou 310006Zhejiang ProvinceChina Department of Gastrointestinal Surgery Zhongshan Hospital of Xiamen UniversityXiamen 361004Fujian ProvinceChina Department of Surgery The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhou 325027Zhejiang ProvinceChina Department of General Surgery Unit 4 Zhangzhou Affiliated Hospital of Fujian Medical UniversityZhangzhou 363000Fujian ProvinceChina Department of Gastrointestinal Surgery The Second Affiliated Hospital of Xiamen Medical CollegeXiamen 361021Fujian ProvinceChina Department of Gastrointestinal Nutrition and Hernia Surgery The Second Hospital of Jilin UniversityChangchun 130041Jilin ProvinceChina Department of Digestive Diseases Xijing HospitalAir Force Military Medical UniversityXi'an 710032Shaanxi ProvinceChina Department of Gastrointestinal Surgery Quanzhou First Hospital Affiliated to Fujian Medical UniversityQuanzhou 362002Fujian Provin

BACKGROUND Laparoscopic radical gastrectomy is widely used,and perioperative complications have become a highly concerned *** To develop a predictive model for complications in laparoscopic radical gastrectomy for gastric cancer to better predict the likelihood of complications in gastric cancer patients within 30 days after surgery,guide perioperative treatment strategies for gastric cancer patients,and prevent serious *** In total,998 patients who underwent laparoscopic radical gastrectomy for gastric cancer at 16 Chinese medical centers were included in the training group for the complication model,and 398 patients were included in the validation *** clinicopathological data and 30-d postoperative complications of gastric cancer patients were *** machine learning methods,lasso regression,random forest,and artificial neural networks,were used to construct postoperative complication prediction models for laparoscopic distal gastrectomy and laparoscopic total gastrectomy,and their prediction efficacy and accuracy were *** The constructed complication model,particularly the random forest model,could better predict serious complications in gastric cancer patients undergoing laparoscopic radical *** exhibited stable performance in external validation and is worthy of further promotion in more *** Using the risk factors identified in multicenter datasets,highly sensitive risk prediction models for complications following laparoscopic radical gastrectomy were *** hope to facilitate the diagnosis and treatment of preoperative and postoperative decision-making by using these models.

关键词： Gastric cancer Laparoscopic radical gastrectomy Postoperative complications Laparoscopic total gastrectomy

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Antitumor activity and low gastrointestinal toxicity of a novel selective inhibitor of nuclear export,SZJK-0421,in multiple myeloma

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Acta Pharmaceutica Sinica B 2024年第7期14卷 3281-3285页

作者： Jing Wang Hang Miao Xuxing Shen lin Yang Yongqiang zhu Lijuan Chen Department of Hematology Jiangsu Province Hospitalthe First Affiliated Hospital of Nanjing Medical UniversityNanjing 210029China College of Life Science Nanjing Normal UniversityNanjing 210037China Multi-component of Traditional Chinese Medicine and Microecology Researh Center Jiangsu Probince Academy of Traditional Chinese MedicineNanjing 210028China

To the Editor:Multiple myeloma(MM)is a plasma cell disease that remains *** anti-MMtherapies are currently in clinical research,including CAR-T therapy,bispecific antibodies,and XPO1 ***1 is a nuclear export protein that helps leucine-rich proteins transport from the nucleus to the ***1 is highly expressed in patients with MM and XPO1 overexpression is associated with short PFS and OS^(2).These observations suggest that XPO1 has considerable value as a therapeutic target for patients with MM.

关键词： Multiple myeloma Selective inhibitor Nuclear export Cytotoxicity Gastrointestinal toxicity

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Organic heterojunction synaptic device with ultra high recognition rate for neuromorphic computing

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Nano Research 2024年第6期17卷 5614-5620页

作者： Xuemeng Hu Jialin Meng Tianyang Feng Tianyu Wang Hao zhu Qingqing Sun David Wei Zhang lin Chen School of Microelectronics State Key Laboratory of Integrated Chips and SystemsFudan UniversityShanghai 200433China National Integrated Circuit Innovation Center Shanghai 201203China

Traditional computing structures are blocked by the von Neumann bottleneck,and neuromorphic computing devices inspired by the human brain which integrate storage and computation have received more and more ***,a flexible organic device with 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene(C8-BTBT)and 2,9-didecyldinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene(C10-DNTT)heterostructural channel having excellent synaptic behaviors was fabricated on muscovite(MICA)substrate,which has a memory window greater than 20 *** device shows better electrical characteristics than organic field effect transistors with single organic semiconductor ***,the device simulates organism synaptic behaviors successfully,such as paired-pulse facilitation(PPF),long-term potentiation/depression(LTP/LTD)process,and transition from short-term memory(STM)to long-term memory(LTM)by optical and electrical ***,the neuromorphic computing function was verified using the Modified National Institute of Standards and Technology(MNIST)pattern recognition,with a recognition rate nearly 100%without *** research proposes a flexible organic heterojunction with the ultra-high recognition rate in MNIST pattern recognition and provides the possibility for future flexible wearable neuromorphic computing devices.

关键词： organic heterojunction neuromorphic computing synapse behaviors optical modulation Modified National Institute of Standards and Technology(MNIST)pattern recognition

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Silica-modified Pt/TiO_(2) catalysts with tunable suppression of strong metal-support interaction for cinnamaldehyde hydrogenation

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Chinese Journal of Chemical Engineering 2024年第6期70卷 189-198页

作者： Zhengjian Hou Yuanyuan zhu Hua Chi Li Zhao Huijie Wei Yanyan Xi Lishuang Ma xiang Feng Xufeng lin College of Chemistry and Chemical Engineering China University of Petroleum(East China)Qingdao 266580China Advanced Chemical Engineering and Energy Materials Research Center China University of Petroleum(East China)Qingdao 266580China State Key Laboratory of Heavy Oil Processing China University of Petroleum(East China)Qingdao 266580China

Tuning Strong Metal-support Interactions(SMSI)is a key strategy to obtain highly active catalysts,but conventional methods usually enable TiO_(x) encapsulation of noble metal components to minimize the exposure of noble *** study demonstrates a catalyst preparation method to modulate a weak encapsulation of Pt metal nanoparticles(NPs)with the supported TiO_(2),achieving the moderate suppression of SMSI *** introduction of silica inhibits this encapsulation,as reflected in the characterization results such as XPS and HRTEM,while the Ti^(4+) to Ti^(3+) conversion due to SMSI can still be found on the support ***,the hydrogenation of cinnamaldehyde(CAL)as a probe reaction revealed that once this encapsulation behavior was suppressed,the adsorption capacity of the catalyst for small molecules like H_(2) and CO was enhanced,which thereby improved the catalytic activity and facilitated the hydrogenation of ***,the introduction of SiO_(2) also changed the surface structure of the catalyst,which inhibited the occurrence of the acetal reaction and improved the conversion efficiency of C=O and C=C *** manipulation of SMSI formation and its consequence on the performance in catalytic hydrogenation reactions are discussed.

关键词： Pt catalyst Silica modification Hydrogenation Cinnamaldehyde Strong metal-support interaction

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Neuroinflammation attenuation effects by celastrol and PDIA3 in the amygdala, hippocampus and dorsal raphe nucleus of obese mice

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Journal of Pharmaceutical Analysis 2024年第2期14卷 287-290页

作者： Chunyan zhu Xuemin Yao Dandan Liu Guoxin Zhang Yongping zhu Hongyu Chi Shuangpan Zhang Jun Yang Ying Liu Jigang Wang Na lin Institute of Chinese Materia Medica China Academy of Chinese Medical SciencesBeijing100700China

Nowadays,roughly 603.7 million people are bothered by obesity[1].More seriously,obesity brings inflammation to the peripheral and central nervous system,which compromises the comorbidity of obesity,major depression[2],and cognitive deficits[3].Drug competent in the comorbidity is still *** 2015,Liu et al.[4]reported celastrol(CEL)as a powerful anti-obesity *** our previous study.

关键词： inflammation obesity obese

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Jetting of a near-wall cavitation bubble induced by another tandem bubble

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Journal of Hydrodynamics 2024年第3期36卷 444-456页

作者： Hui Han Jing-zhu Wang Jian-lin Huang Peng-bo Bai Yong-gang Chen Yi-wei Wang Key Laboratory for Mechanics in Fluid Solid Coupling Systems Institute of MechanicsChinese Academy of SciencesBeijing100190China School of Engineering Science University of Chinese Academy of SciencesBeijing100049China Guangdong Aerospace Research Academy Guangzhou511458China School of Future Technology University of Chinese Academy of SciencesBeijing100049China Jianghuai Advance Technology Center Hefei230088China

Double bubbles near a rigid wall surface collapse to produce a significant jet impact,with potential applications in surface cleaning and ultrasonic ***,the dynamic behaviors of near-wall bubbles remain *** this study,we investigate the jetting of a near-wall bubble induced by another tandem *** define two dimensionless standoff distances,γ_(1),γ_(2),to represent the distances from the center of the near-wall bubble to the rigid wall and the center of controlling bubble to the center of the near-wall bubble,*** observations reveal three distinct jetting regimes for the near-wall bubble:transferred jetting,double jetting,and directed *** further investigate the jetting mechanism,numerical simulations are conducted using the compressibleInterFoam solver in the open-source framework of OpenFOAM.A detailed analysis shows that the transferred jet flow is caused by the pinch-off resulting from the axial contraction velocity at the lower end of the near-wall bubble being greater than the vertical contraction velocity,leading to a maximum jet velocity of 682.58 m/*** the case of double jetting,intense stretching between the controlling bubble and the wall leads to a pinch-off and a double jetting with a maximum velocity of 1096.29 m/*** directed jet flow is caused by the downward movement of the high-pressure region generated by the premature collapse of the controlling bubble,with the maximum jet velocity reaching 444.62 m/s.

关键词： Jetting of near-wall bubble controlling bubble impact velocity

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Graphene reinforced nanoarchitectonics of 3D interconnected magnetic-dielectric frameworks for high-efficient and anti-corrosive microwave absorbers

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Journal of Materials Science & Technology 2024年第1期168卷 194-207页

作者： Chenchen Liu Xiaofang Feng Shuning Liu Guo lin Zhongxiang Bai lingling Wang Ke zhu Xiulan Li Xiaobo Liu School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu611731China Sichuan Province Engineering Technology Research Center of Novel CN Polymeric Materials Chengdu611731China School of Chemical Engineering Northwest UniversityXi’an710069China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology School of Environmental Science and EngineeringSun Yat-sen UniversityGuangzhou510275China

The combination of high efficiency and environmental stability is vital to promote the commercial appli-cations of microwave absorption(MA)materials,yet remains challenging in the absence of facile ***,we put forward a graphene-reinforced construct approach for one-pot synthesis of 3D intercon-nected magnetic-dielectric frameworks via pre-functionalization and subsequent *** in-teractions among discrete precursors are capable of manipulating the confined growth and interfacial *** enhancements in MA properties are triggered in a straightforward manner us-ing ultralow feeding fractions of graphene oxide *** minimum reflection loss is up to-60.1 dB(99.9999%wave absorption)and the effective absorption bandwidth reaches 5.9 GHz(almost covering the Ku band).Remarkably,based on the optimization by ultralow concentrations of graphene,the as-prepared nanoarchitecture simultaneously integrates strong absorption,broad bandwidth,and low matching *** embedded graphene nanosheets serve as high-speed electron transmission channels and hollow resonance cavities,facilitating multimode attenuations and impedance-matching ***-while,the graphene-reinforced framework suppresses the corrosion of magnetic components,whose cor-rosion rate reduces by an order of *** study provides a simple procedure to boost magnetic-dielectric absorbers for comprehensive MA performances and enhanced corrosion resistance.

关键词： 3D Magnetic-dielectric framework Graphene nanosheet Microwave absorption Anti-corrosion

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Microwave-assisted fast synthesis and red-emitting properties of a borotellurate-based phosphor with excellent thermostability

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Journal of Rare Earths 2024年第6期42卷 1036-1045,I0002页

作者： Yuefei xiang Hong Li Hongzhi Zhang lin Yang Canyuan Liao Tongsheng Yang Junpeng Li Zewen Guo Jing zhu Key Laboratory of LCR Materials and Devices of Yunnan Province Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon TechnologiesSchool of Materials and Energy Yunnan UniversityKunming650091China

At present,with the increasing application needs of phosphor-converted white light-emitting diode(wLED),the synthetic efficiency and thermal stability of phosphor become urgent ***,this research reports a microwave-assisted fast synthesis approach to obtain a Sm^(3+)-activated borotellurate Na_(2)Y_(2)TeO_(4)(BO_(3))_(2)(NYTB)red phosphor with high crystallinity,excellent thermostability,and low chromaticity *** the NYTB-based phosphor,in contrast to the conventional solid-state synthesis,the microwave-assisted synthesis method involves lower synthesis temperature and shorter processing ***,the concentration quenching mechanism was *** w-LED device packaged with the studied phosphor exhibits a near-standard white light with proper CCT and high Ra parameters.

关键词： Borotellurate Samarium Microwave-assisted synthesis Red-emitting Thermal stability Rareearths

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Berberine Enhances Intestinal Mucosal Barrier Function by Promoting Vitamin D Receptor Activity

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Chinese Journal of Integrative Medicine 2024年第2期30卷 143-151页

作者： HUANG Yong-quan LIU Jia-lin CHEN Geng-xin SHEN Dan-ting zhu Wang CHEN Xin-lin LIU Feng-bin HOU Qiu-ke Graduate School Guangzhou University of Chinese MedicineGuangzhou(510405)China Department of Orthopedics the Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou(510006)China Department of Preventive Medicine and Health Statistics Guangzhou University of Chinese MedicineGuangzhou(510006)China Department of Gastroenterology the First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou(510405)China

Objective:To evaluate if berberine can act on vitamin D receptors(VDR)and thereby regulate the expression of tight junction proteins(TJPs)in irritable bowel syndrome-diarrhea-predominant(IBS-D)***:The newborn rats were induced into IBS-D rat model via neonatal maternal separation combined with acetic acid chemical *** modeling,the model was evaluated and rats were divided into the control group and berberine treatment groups(0.85,1.7 and 3.4 mg/kg,once a day for 2 weeks).The distal colon was obtained and colonic epithelial cells(CECs)were isolated and cultured after IBS-D model *** vitamin D receptor response element(VDRE)reporter gene was determined in the CECs of IBS-D rats to analyze the effect of berberine on the VDRE *** overexpression or silencing technology was used to analyze whether VDR plays a role in promoting intestinal barrier repair,and to determine which region of VDR plays a role in berberine-regulated intestinal ***:The IBS-D rat model was successfully constructed and the symptoms were improved by berberine in a dose-dependent manner(P<0.05).The activity of VDRE promoter was also effectively promoted by berberine(P<0.05).Berberine increased the expression of TJPs in IBS-D CECs(P<0.05).VDR expression was significantly increased after transfection of different domains of VDR when compared to normal control and basic plasmid groups(all P<0.05).RT-qPCR and Western blot results showed that compared with the blank group,expressions of occludin and zonula occludens-1 were significantly higher in VDR containing groups(all P<0.05).Berberine plus pCMV-Myc-VDR-N group exerted the highest expression levels of occludin and zonula occludens-1(P<0.05).Conclusion:Berberine enhances intestinal mucosal barrier function of IBS-D rats by promoting VDR activity,and the main site of action is the N-terminal region of VDR.

关键词： berberine Chinese medicine irritable bowel syndrome-diarrhea-predominant vitamin D receptors intestinal mucosal barrier tight junction proteins

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