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Fear can be more harmful than the severe acute respiratory syndrome coronavirus 2 in controlling the corona virus disease 2019 epidemic

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World Journal of Clinical Cases 2020年第4期8卷 652-657页

作者： Shi-Yan Ren rong-ding gao Ye-Lin Chen Vascular Surgery Department of General SurgeryAviation General HospitalChina Medical UniversityBeijing 100012China College of Robotics Beijing Union UniversityBeijing 100101China

The current corona virus disease 2019 outbreak caused by severe acute respiratory syndrome coronavirus 2 started in Wuhan,China in December 2019 and has put the world on *** safeguard Chinese citizens and to strengthen global health security,China has made great efforts to control the *** in the global community have joined China to limit the ***,discrimination and prejudice driven by fear or misinformation have been flowing globally,superseding evidence and jeopardizing the anti-severe acute respiratory syndrome coronavirus 2 *** analyze this phenomenon and its underlying causes and suggest practical solutions.

关键词： Coronavirus Severe acute respiratory syndrome Severe acute respiratory syndrome coronavirus 2 Coronavirus disease 2019 Outbreak Fear Discrimination Prejudice

Phlebosclerosis: An overlooked complication of varicose veins that affects clinical outcome: A case report

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World Journal of Clinical Cases 2023年第35期11卷 8404-8410页

作者： Shi-Yan Ren Song-Yi Qian rong-ding gao Department of Laser and Vascular Surgery Aviation General HospitalBeijing 100012China Department of Cardiac Surgery Zhongshan Hospital(Xiamen Branch)Fudan UniversityXiamen 361015Fujian ProvinceChina

BACKGROUND Phlebosclerosis is a common age-related fibrotic degeneration of the venous *** is a disorder rather than a disease,which may cause venous dysfunction and even venous *** is rarely reported in patients with varicose *** SUMMARY The present report describes the case of a 70-year-old man with varicose veins,vitiligo,and *** angiography revealed blood reflux in the superficial and deep *** patient underwent surgery to remove the saphe-nous *** the operation,a calcified vein resembling a wooden stick was found,which was surprisingly extracted from the thickened venous wall.A cross-section of this wooden stick-like vein revealed venous fibrosis and calcification,obvious thickening of the venous wall,extensive collagen deposition on the venous wall,hyaline degeneration,and venous sclerosis causing closure of the venous *** This is probably the first report of a wooden stick-like structure being found in the venous wall in patients with varicose veins and venous *** can be observed in the late stage of varicose veins complicated by frequent infections and worse clinical ***,it is important to be aware of this condition and address it rather than overlook it.

关键词： Phlebosclerosis Varicose vein Phlebothrombosis Thrombophlebitis Calcification Ossification of vein wall Chronic venous disease Case report

Omicron variant (B.1.1.529) of SARS-CoV-2: Mutation, infectivity, transmission, and vaccine resistance

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World Journal of Clinical Cases 2022年第1期10卷 1-11页

作者： Shi-Yan Ren Wen-Biao Wang rong-ding gao Ai-Mei Zhou Laser Vascular Surgery Aviation General HospitalChina Medical UniversityBeijing 10012China Department of Stomatology Aviation General HospitalChina Medical UniversityBeijing 100012China Department of General Surgery Aviation General HospitalChina Medical UniversityBeijing 10012China

The appearance of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)variant Omicron(B.1.1.529)has caused panic responses around the world because of its high transmission rate and number of *** review summarizes the highly mutated regions,the essential infectivity,transmission,vaccine breakthrough and antibody resistance of the Omicron variant of *** Omicron is highly transmissible and is spreading faster than any previous variant,but may cause less severe symptoms than previous *** Omicron is able to escape the immune system’s defenses and coronavirus disease 2019 vaccines are less effective against the Omicron *** careful preventive steps including vaccination will always be key for the suppression of the Omicron variant.

关键词： COVID-19 Omicron variant B.1.1.529 SARS-CoV-2 Infectivity Transmission Variant of concern Genotyping RT-PCR

Strategies and challenges in treatment of varicose veins and venous insufficiency

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World Journal of Clinical Cases 2022年第18期10卷 5946-5956页

作者： rong-ding gao Song-Yi Qian Hai-Hong Wang Yong-Sheng Liu Shi-Yan Ren Department of Laser and Vascular Surgery Aviation General HospitalChina Medical UniversityBeijing 100012China Department of Cardiac Surgery Zhongshan Hospital(Xiamen Brach)Fudan UniversityXiamen 361015Fujian ProvinceChina Department of Peripheral Vascular Disease The Affiliated Hospital of Shanxi University of Chinese MedicineTaiyuan 030024Shanxi ProvinceChina Department of Dermatology Aviation General HospitalChina Medical UniversityBeijing 100012China

Patients with varicose veins can be treated with conservative or surgical approaches based on the clinical conditions and patient *** the recent decade,the recommendations for managing symptomatic varicose veins have changed dramatically due to the rise of minimally invasive endovascular *** literature was systematically searched on Medline without language *** papers on the treatment of varicose veins and venous insufficiency with different procedures were included and *** laser ablation(EVLA)and radiofrequency ablation(RFA)both are same safe and effective in terms of occlusion rate,and time to return to normal *** comparison with RFA or EVLT,Cure conservatrice et Hemodynamique de l’Insufficience Veineuse en Ambulatoire(CHIVA)may cause more bruising and make little or no difference to rates of limb infection,superficial vein thrombosis,nerve injury,or *** terms of recurrence of varicose veins,there is little or no difference between CHIVA and stripping,RFA,or *** saphenous vein recanalization is highest in the ultrasound-guided foam sclerotherapy(FS)group(51%)during 1 year of *** 2013 National Institute for Health and Care Excellence clinical guidelines recommend surgery as a third-line therapeutic option after EVLA or RFA and *** the mechanochemical endovenous ablation(MOCA)is a non-thermal,non-tumescent option and appears to be of similar efficacy to stab avulsion with no potential risk of nerve damage,the overall success rate of MOCA is lower than those of other procedures such as EVLA,RFA,or high ligation and *** is the most cost-effective therapeutic option,with RFA being a close second for the treatment of patients with varicose *** thermal ablation(EVLA or RFA)is recommended as a first-line treatment for varicose veins and has substituted the high ligation of saphenofemoral junctional reflux and stripping of varicose ***

关键词： Varicose veins Venous insufficiency High ligation and stripping Endovenous laser ablation Radiofrequency ablation Cure conservatrice et Hemodynamique de l’Insufficience Veineuse en Ambulatoire

Strategies and challenges in the treatment of chronic venous leg ulcers

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World Journal of Clinical Cases 2020年第21期8卷 5070-5085页

作者： Shi-Yan Ren Yong-Sheng Liu Guo-Jian Zhu Meng Liu Shao-Hui Shi Xiao-Dong Ren Ya-Guang Hao rong-ding gao Department of General Surgery and Vascular Surgery Aviation General HospitalChina Medical UniversityBeijing 100012China Department of Dermatology Aviation General HospitalBeijing 100012China Department of General Surgery Taian Communications HospitalTaian 271000Shandong ProvinceChina Department of Surgery Tianjin Hexi HospitalTianjin 300202TianjinChina Department of Orthopaedic Surgery Aviation General HospitalChina Medical UniversityBeijing 100012China Department of Surgery Wanquanqu Zhongyi HospitalZhangjiakou 076250Hebei ProvinceChina Department of Medical Administrative Aviation General HospitalChina Medical UniversityBeijing 100012China Department of General Surgery Aviation General HospitalChina Medical UniversityBeijing 100012China

Evaluating patients with chronic venous leg ulcers(CVLUs)is essential to find the underlying *** basic tenets in managing CVLUs are to remove the etiological causes,to address systemic and metabolic conditions,to examine the ulcers and artery pulses,and to control wound infection with debridement and eliminating excessive pressure on the *** first-line treatments of CVLUs remain wound care,debridement,bed rest with leg elevation,and *** to support the efficacy of silver-based dressings in healing CVLUs is *** peroxide is harmful to the growth of granulation tissue in the *** options include a high ligation with or without stripping or ablation of the GSVs depending on venous reflux or ***,not all CVLUs are candidates for surgical treatment because of *** standard care of wound for 4 wk failed to heal CVLUs effectively,use of advanced wound care should be considered based on the available *** pressure wound therapy facilitates granulation tissue development,thereby helping closure of *** split-thickness skin grafting is still the gold standard approach to close huge *** punch graft appears to have a better result than traditional hairless punch graft for *** of adipose tissue or placenta-derived mesenchymal stem cells is a promising therapy for wound *** platelet-rich plasma provides an alternative strategy for surgery for safe and natural healing of the *** confirmative efficacy of current advanced ulcer therapies needs more robust evidence.

关键词： Chronic venous leg ulcers Debridement Compression Negative pressure wound therapy Autologous split-thickness skin grafting Hair punch graft Platelet-rich plasma Advanced wound care therapies

Stability and infectivity of coronaviruses in inanimate environments

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World Journal of Clinical Cases 2020年第8期8卷 1391-1399页

作者： Shi-Yan Ren Wen-Biao Wang Ya-Guang Hao Hao-Ran Zhang Zhi-Chao Wang Ye-Lin Chen rong-ding gao Vascular Surgery Department of General SurgeryAviation General HospitalChina Medical UniversityBeijing 100012China Aviation General Hospital China Medical UniversityBeijing 100012China State Key laboratory of Natural and Biomimetic Drugs Department of Chemical BiologySchool of Pharmaceutical SciencesPeking UniversityBeijing 100191China College of Robotics Beijing Union UniversityBeijing 100101China

Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)is a highly contagious virus that can transmit through respiratory droplets,aerosols,or *** touching of contaminated surfaces in public areas is therefore a potential route of SARS-CoV-2 *** inanimate surfaces have often been described as a source of nosocomial ***,summaries on the transmissibility of coronaviruses from contaminated surfaces to induce the coronavirus disease 2019 are rare at *** review aims to summarize data on the persistence of different coronaviruses on inanimate *** literature was systematically searched on Medline without language *** reports with experimental evidence on the duration persistence of coronaviruses on any type of surface were *** viruses from the respiratory tract,such as coronaviruses,influenza,SARS-CoV,or rhinovirus,can persist on surfaces for a few *** time on inanimate surfaces varied from minutes to up to one month,depending on the environmental ***-2 can be sustained in air in closed unventilated buses for at least 30 min without losing *** most common coronaviruses may well survive or persist on surfaces for up to one *** in respiratory or fecal specimens can maintain infectivity for quite a long time at room *** materials like cotton are safer than unabsorbent materials for protection from virus *** risk of transmission via touching contaminated paper is *** strategies such as washing hands and wearing masks are critical to the control of coronavirus disease 2019.

关键词： Severe acute respiratory syndrome coronavirus 2 Coronavirus disease 2019 Inanimate surface Infectivity Survival Transmission

Optimization Strategies of Na_(3)V_(2)(PO_(4))_(3) Cathode Materials for Sodium‑Ion Batteries

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Nano-Micro Letters 2025年第2期17卷 204-251页

作者： Jiawen Hu Xinwei Li Qianqian Liang Li Xu Changsheng ding Yu Liu Yanfeng gao School of Materials Science and Engineering Shanghai UniversityShanghai 200444People’s Republic of China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050People’s Republic of China

Na_(3)V_(2)(PO_(4))_(3)(NVP)has garnered great attentions as a prospective cathode material for sodium-ion batteries(SIBs)by virtue of its decent theoretical capacity,superior ion conductivity and high structural ***,the inherently poor electronic conductivity and sluggish sodium-ion diffusion kinetics of NVP material give rise to inferior rate performance and unsatisfactory energy density,which strictly confine its further application in ***,it is of significance to boost the sodium storage performance of NVP cathode *** to now,many methods have been developed to optimize the electrochemical performance of NVP cathode *** this review,the latest advances in optimization strategies for improving the electrochemical performance of NVP cathode material are well summarized and discussed,including carbon coating or modification,foreign-ion doping or substitution and nanostructure and morphology *** foreign-ion doping or substitution is highlighted,involving Na,V,and PO_(4)^(3−)sites,which include single-site doping,multiple-site doping,single-ion doping,multiple-ion doping and so ***,the challenges and prospects of high-performance NVP cathode material are also put *** is believed that this review can provide a useful reference for designing and developing high-performance NVP cathode material toward the large-scale application in SIBs.

关键词： Sodium-ion batteries Na_(3)V_(2)(PO_(4))_(3) Cathode materials Electrochemical performance Optimization strategies

Low‑Temperature Oxidation Induced Phase Evolution with Gradient Magnetic Heterointerfaces for Superior Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第1期17卷 191-204页

作者： Zizhuang He Lingzi Shi Ran Sun Lianfei ding Mukun He Jiaming Li Hua Guo Tiande gao Panbo Liu School of Chemistry and Chemical Engineering Northwestern Polytechnical UniversityXi’an 710129People’s Republic of China School of Marine Science and Technology Northwestern Polytechnical UniversityXi’an 710072People’s Republic of China

Gradient magnetic heterointerfaces have injected infinite vitality in optimizing impedance matching,adjusting dielectric/magnetic resonance and promoting electromagnetic(EM)wave absorption,but still exist a significant challenging in regulating local phase ***,accordion-shaped Co/Co_(3)O_(4)@N-doped carbon nanosheets(Co/Co_(3)O_(4)@NC)with gradient magnetic heterointerfaces have been fabricated via the cooperative high-temperature carbonization and lowtemperature oxidation *** results indicate that the surface epitaxial growth of crystal Co_(3)O_(4) domains on local Co nanoparticles realizes the adjustment of magnetic-heteroatomic components,which are beneficial for optimizing impedance matching and interfacial ***,gradient magnetic heterointerfaces simultaneously realize magnetic coupling,and long-range magnetic ***,the synthesized Co/Co_(3)O_(4)@NC absorbents display the strong electromagnetic wave attenuation capability of−53.5 dB at a thickness of 3.0 mm with an effective absorption bandwidth of 5.36 GHz,both are superior to those of single magnetic domains embedded in carbon *** design concept provides us an inspiration in optimizing interfacial polarization,regulating magnetic coupling and promoting electromagnetic wave absorption.

关键词： Magnetic heterointerfaces Phase evolution Interfacial polarization Magnetic coupling Electromagnetic wave absorption

Local magnetic moment oscillation around an Anderson impurity on graphene

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 192-201页

作者： Shuai Li Zhen Ma Jin-Hua gao School of Science Hebei University of Science and Technology School of Electronics and Information Zhengzhou University of Light Industry School of Physics and Wuhan National High Magnetic Field Center Huazhong University of Science and Technology

We theoretically investigate the spin resolved Friedel oscillation （FO） and quasiparticle interference （QPI） in graphene induced by an Anderson *** the impurity becomes magnetic,the resulted FO becomes spin dependent,which gives rise to a local magnetic moment oscillation with an envelop decaying as r-2in real space in the doping ***,at half filling,the electron density and local magnetic moment will not oscillate but decay as *** spin resolved FO has both sublattice and spin ***,the local magnetic moment decay at half filling only occurs at one sublattice of graphene,which is quite like the phenomenon observed in the STM experiment (***ález-Herrero et al.,Science 352,437 （2016）).We further give an analytic formula about such spin dependent FO based on the stationary phase ***,we study the interference of quasiparticles around the magnetic impurity by calculating the spin dependent Fourier-transformed local density of states （FT-LDOS）.Our work gives a comprehensive understanding about the local magnetic moment oscillation around an Anderson impurity on graphene.

关键词： Friedel oscillation local magnetic moment graphene Anderson impurity