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chinese Physics C 2024年第4期48卷 159-173页

作者：李哲吳震宇陈松战南云程何会海 Institute of High Energy Physics Chinese Academy of ScienceBeijing 100049China Department of Physics The Chinese University of Hong KongShatinNew TerritoriesHong KongChina School of Physical Sciences University of Chinese Academy of ScienceBeijing 100049China

Cosmic rays can interact with the solar atmosphere and produce a slew of secondary messengers,making the Sun a bright gamma-ray source in the *** observations with Fermi-LAT have shown that these interactions must be strongly affected by solar magnetic fields in order to produce a wide range of observational features,such as a high flux and hard ***,the detailed mechanisms behind these features are still a *** this study,we tackle this problem by performing particle-interaction simulations in the solar atmosphere in the presence of coronal magnetic fields using the potential field source surface(PFSS)*** find that low-energy(~GeV)gamma-ray production is significantly enhanced by the coronal magnetic fields,but the enhancement decreases rapidly with *** enhancement directly correlates with the production of gamma rays with large deviation angles relative to the input cosmic-ray *** conclude that coronal magnetic fields are essential for correctly modeling solar disk gamma rays below 10 GeV,but above that,the effect of coronal magnetic fields *** magnetic field structures are needed to explain the high-energy disk emission.

关键词： solar gamma-ray corona magnetic field Geant4 simulation hadronic interaction

Academic Stress Assessment Using Virtual Reality as an Educational Tool in Spine Surgery

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Open Journal of Modern Neurosurgery 2024年第2期14卷 114-123页

作者： Diana chávez Lizárraga Jesús Alberto Pérez Contreras Fernando Alvarado Gómez Evelyn Quintero Medina Emmanuel Cantú chávez Iván Ulises Sámano López Ana Sofía Peña Blesa Department of Neurosurgery ángeles Pedregal Ciudad de México México Department of Traumatology and Orthopedics Hospital Santa Fe Bogotá Colombia

Introduction: The evaluation of academic stress in medical students and residents is a topic of significant interest, given the considerable challenges they face during their learning process with traditional teach.ng methods. The use of technologies like virtual reality presents an opportunity to enhance their skills through simulations and training. The main objective of this study is to qualitatively assess the stress levels experienced by medical students and residents by integrating virtual reality into their current learning methods, aiming to improve their ability to manage stressors in their practice. Material and Methods: A questionnaire was conducted with 12 medical students and 12 Traumatology and orthopedics residents. The purpose of the questionnaire was to evaluate the levels of academic stress using the SISCO inventory. The stress levels were calculated by transforming average values into percentages, and the following criteria were assigned: 0 to 33% for Mild Stress, 34 to 66% for Moderate Stress, and 67 to 100% for Deep Stress. Then, a virtual reality class focused on spine surgery was provided. Both medical students and residents were trained using the Non Nocere SharpSurgeon software platform and Oculus Quest 2 virtual reality glasses. At the end of the session, a second questionnaire related to the practice with virtual reality was conducted with the same evaluation criteria and a comparative analysis was carried out. Results: 12 undergraduate students from Hospital Angeles Mexico, CDMX and 12 traumatology and orthopedics residents at Hospital Santa Fe, Bogota were evaluated. The students in CDMX reported an average qualitative stress of 28.50% during habitual practices, which decreased to an average of 14.67% after virtual reality practice. Residents in Bogotá experienced an average qualitative stress of 30.50% with their current learning methods but this reduced to an average of 13.92% after using virtual reality. These findings indicate that t

关键词： Virtual Reality Academic Stress Learning Strategies Spine Surgery Training

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AI情感陪伴开启智慧新生活

商业周刊（中文版） 2024年第5期 70-72页

作者： Erica.ch 不详

数字经济经历了从PC的发明普及到移动互联网的兴盛,如今来到以AI为核心驱动力的新阶段。AI渗透现代人的日常起居,影响着他们的生活方式。部分机器人/宠物已迈入与人类进行感情交流的时代,AI情感陪伴机器人LOVOT正是AI大潮的产物。未来,... 详细信息

数字经济经历了从PC的发明普及到移动互联网的兴盛,如今来到以AI为核心驱动力的新阶段。AI渗透现代人的日常起居,影响着他们的生活方式。部分机器人/宠物已迈入与人类进行感情交流的时代,AI情感陪伴机器人LOVOT正是AI大潮的产物。未来,人类将更自然地和机器进行交流,对于机器的反馈需求也会逐步细化,社会生活的应用和服务形态势必将迎来又一轮变革。

关键词：移动互联网感情交流日常起居服务形态 AI 机器人情感陪伴核心驱动力

Olefin Polymerization Behavior of Titanium(IV) Complexes with Fluorinated and Non-fluorinated Aliphatic Phenoxyimine Ligands

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chinese Journal of Polymer Science 2024年第1期42卷 52-62,I0007页

作者： Vladislav A.Tuskaev Kasim F.Magomedov Svetlana ch.Gagieva Dmitry A.Kurmaev Yulia V.Nelyubina Evgenii K.Golubev Maria D.Evseeva Viktor G.Vasil'ev Galina G.Nikiforova Mikhail I.Buzin Vyacheslav S.Bogdanov Boris M.Bulychev Department of chemistry M.V.Lomonosov Moscow State UniversityMoscow 119992Russian Federation A.N.Nesmeyanov Institute of Organoelement Compounds Russian Academy of SciencesMoscow119991Russian Federation Enikolopov Institute of Synthetic Polymer Materials Russian Academy of SciencesMoscow 117393Russian Federation

A series of Ti(Ⅳ) dichloride and dialkoxide com plexes with phenoxyimine ligands containing fluorinated and nonfluorinated aliphatic imine fragments have been *** molecular structures of complexes 1 and 4 were established by single-crystal X-ray diffraction *** complexes adopt a distorted octahedral coordination structure around the titanium atom and two oxygen atoms are situated in trans position while two nitrogen atoms and two outgoing ligands(Cl or iPrO) are situated in cis *** of activators(MMAO-12 and combinations Et_nAICl_(3-n)+Bu_(2)Mg) and outgoing ligand(Cl or iPrO) nature on the catalytic activity and properties of the resulting polymers was *** Ti complexes,despite the nature of the outgoing ligands(Cl or iPrO) in the presence of Al/Mg activators,was found to display a high ethylene polymerization activity in the range 1600-3830 kg_(polymer)·mol_(Ti)^(-1)·h^(-1)·atm^(-1) with a viscosity average molecular weight(M_v) value in the range 1.1×10~6-7.1×10~6 Dalton(Da).The resulting UHMWPE can be processed by a solventless method into high-strength and high-modulus oriented *** rheological characteristics of a polymer melt have been *** absence of a cross-over point did not allow to compare the values of the molecular weight distribution of polymers obtained on fluorinated and non-fluorinated pre-catalysts,however,the estimation of the entanglement density is in good agreement with the mechanical characteristics of oriented film *** activation with methylalumoxane,the activity of the com plexes decreased very significantly;however,a polymer with a molecular weight of about 12 million Da was *** the process of ethylene/octene-1 copolymerization,fluorine-containing precatalysts showed a clear advantage over non-fluorinated analogues both in activity and in comonomer content.

关键词： FI catalysts Titanium(IV) (Co)polymerization Al/Mg co-catalyst Ultra-high molecular weight polyethylene

Quantitative and qualitative subgenomic RNA profiles of SARS-CoV-2 in respiratory samples: A comparison between Omicron BA.2 and non-VOC-D614G

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Virologica Sinica 2024年第2期39卷 218-227页

作者： Zigui chen Rita Way Yin ng Grace Lui Lowell Ling Agnes S.Y.Leung chit chow Siaw Shi Boon Wendy C.S.Ho Maggie Haitian Wang Renee Wan Yi chan Albert Martin Li David Shu cheong Hui Paul Kay Sheung chan Department of Microbiology Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Medicine and Therapeutics Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Anaesthesia and Intensive Care Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Paediatrics Faculty of MedicineThe Chinese University of Hong KongHong KongChina Department of Anatomical and Cellular Pathology Faculty of MedicineThe Chinese University of Hong KongHong KongChina Jockey Club School of Public Health and Primary Care Faculty of MedicineThe Chinese University of Hong KongHong KongChina Stanley Ho Centre for Emerging Infectious Diseases Faculty of MedicineThe Chinese University of Hong KongHong KongChina

The SARS-CoV-2 Omicron variants are notorious for their transmissibility,but little is known about their subgenomic RNA(sgRNA)*** study applied RNA-seq to delineate the quantitative and qualitative profiles of canonical sgRNA of 118 respiratory samples collected from patients infected with Omicron BA.2 and compared with 338 patients infected with non-variant of concern(non-VOC)-D614G.A unique characteristic profile depicted by the relative abundance of 9 canonical sgRNAs was reproduced by both BA.2 and non-VOCD614G regardless of host gender,age and presence of ***,such profile was lost in samples with low viral load,suggesting a potential application of sgRNA pattern to indicate viral activity of individual patient at a specific time point.A characteristic qualitative profile of canonical sgRNAs was also reproduced by both BA.2 and *** presence of a full set of canonical sgRNAs carried a coherent correlation with crude viral load(AUC¼0.91,95%CI 0.88–0.94),and sgRNA ORF7b was identified to be the best surrogate marker allowing feasible routine application in characterizing the infection status of individual *** potentials in using sgRNA as a target for vaccine and antiviral development are worth pursuing.

关键词： Coronavirus SARS-CoV-2 Omicron BA.2 Non-VOC-D614G RNA-seq Subgenomic RNA(sgRNA)

An update on hormonal regulation of early embryo-fallopian tube interactions: insights for improvements of assisted reproductive technology outcomes

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Reproductive and Developmental Medicine 2024年第1期8卷 39-49页

作者： Suranga P.Kodithuwakku Ernest H.Y.ng William S.B.Yeung Kai-Fai Lee Department of Obstetrics and Gynaecology LKS Faculty of MedicineThe University of Hong KongHong Kong SAR 999077China Department of Animal Science Faculty of AgricultureUniversity of PeradeniyaPeradeniya 20400Sri Lanka Shenzhen Key Laboratory of Fertility Regulation.The University of Hong Kong-Shenzhen Hospital Shenzhen 518053China

Human fallopian tubes(FTs)play important roles in the whole reproductive *** are the site for the final maturation of gametes,fertilization,transport of preimplantation embryos,and early embryonic development before entering the *** these functions are critical in the establishment of a successful *** the embryo is in transit through the FT,the FT microenvironment ch.nges through endocrine,paracrine,autocrine,and juxtacrine mechanisms which involve various hormones and bioactive substances mainly from the neighboring ***,the interactions between the embryo and the FT may be the earliest embryo-maternal communications that are essential for the establishment of *** review critically discusses the evidence of various hormonal and bioactive mediated control of the microenvironment in the FTs during the earliest embryo-maternal ***,we highlight existing gaps in the knowledge and the importance of exploring more of the physiology of FTs which will hold the key to producing high-quality embryos for patients seekingin vitro fertilization(IVF)treatments.

关键词： Fallopian tube Embryo Maternal-embryo communication Hormonal control

Performance in the Fundamentals of Laparoscopic Surgery: Does it reflect global rating scales in the Objective Structured Assessment of Technical Skills in porcine laparoscopic surgery?

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Asian Journal of Urology 2024年第3期11卷 443-449页

作者： Ho Yee Tiong Wei Zheng So Jeremy Yuen-chun Teoh Shuji Isotani Gang Zhu Teng Aik Ong Eddie Shu-Yin chan Peggy Sau-Kwan chu Kittinut Kijvikai Ming Liu Bannakji Lojanapiwat Michael Wong Anthony chi-Fai ng Yong Loo Lin School of Medicine Department of SurgeryNational University of SingaporeSingapore S.H.Ho Urology Centre Department of SurgeryThe Chinese University of Hong KongHong KongChina Department of Urology Juntendo University Graduate School of MedicineTokyoJapan Department of Urology National University HospitalSingapore Department of Urology Beijing United Family HospitalBeijingChina Department of Surgery University of Malaya Specialist CentreKuala LumpurMalaysia Division of Urology Department of SurgeryTuen Mun HospitalHong Kong Department of Urology Ramathibodi HospitalMahidol UniversitySalayaThailand Department of Urology Beijing HospitalBeijingChina Department of Urology Chiangmai Ram HospitalChiang MaiThailand International Urology Fertility&Gynaecology CentreSingapore

Objective:To correlate the utility of the Fundamentals of Laparoscopic Surgery(FLS)manual skills program with the Objective Structured Assessment of Technical Skills(OSATS)global rating scale in evaluating operative ***:The Asian Urological Surgery Training and Educational Group(AUSTEG)Laparoscopic Upper Tract Surgery Course implemented and validated the FLS program for its usage in laparoscopic surgical ***’basic laparoscopic skills were assessed using three different training models(peg transfer,precision cutting,and intra-corporeal suturing).They also performed live porcine laparoscopic surgery at the same *** surgery skills were assessed by blinded faculty using the OSATS rating ***:From March 2016 to March 2019,a total of 81 certified urologists participated in the course,with a median of 5 years of post-residency *** differences in task time did not reach statistical significance,those with more surgical experience were visibly faster at completing the peg transfer and intra-corporeal suturing FLS ***,they took longer to complete the precision cutting task than participants with less *** OSATS scores correlated weakly with all three FLS tasks(peg transfer time:r=0.331,r^(2)=0.110;precision cutting time:r=0.240,r^(2)=0.058;suturing with intracorporeal knot time:r=0.451,r^(2)=0.203).Conclusion:FLS task parameters did not correlate strongly with OSATS globing rating scale *** FLS task models demonstrated strong validity,it is important to assimilate the inconsistencies when benchmarking technical proficiency against real-life operative competence,as evaluated by FLS and OSATS,respectively.

关键词： TheFundamentalsof Laparoscopic Surgery The Objective Structured Assessment of Technical Skills Laparoscopic training Surgical education Surgical training Urological laparoscopic surgery

Impact of Earthquake Action on the Design and Sizing of Jointed Masonry Structures in South Kivu, DRC

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Open Journal of Civil Engineering 2024年第1期14卷 127-153页

作者： Edmond Dawak Fezeu Marcelline Blanche Manjia chérif Bishweka Biryondeke Patient Kubuya Binwa Élodie Rufine Zang chrispin Pettang Laboratory of Engineering Civil and Mechanics Doctoral Research Unit for Engineering and Applications University of Yaound&#233 I Yaound&#233 Cameroon Department of Civil Engineering Faculty of Applied Sciences and Technologies Free University of Great Lakes Countries Goma DRC

This article deals with the investigation of the effects of seismic impacts on the design and dimensioning of structures in South Kivu. The starting point is the observation of an ambivalence that can be observed in the province, namely the non-consideration of seismic action in the study of structures by both professionals and researchers. The main objective of the study is to show the importance of dynamic analysis of structures in South Kivu. It adopts a meta-analytical approach referring to previous researches on South Kivu and proposes an efficient and optimal method. To arrive at the results, we use Eurocode 7 and 8. In addition, we conducted static analysis using the Coulomb method and dynamic analysis using the Mononobe-Okabe method and compared the results. At Nyabibwe, the results showed that we have a deviation of 24.47% for slip stability, 12.038% for overturning stability and 9.677% for stability against punch.ng through a weight wall.

关键词： Jointed Masonry Weight-Bearing Structures Seismic Action Eurocode 7 and 8 Static and Dynamic Analysis

Effect of music therapy on short-term psychological and physiological outcomes in mechanically ventilated patients: A randomized clinical pilot study

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Journal of Intensive Medicine 2024年第04期04卷 515-525页

作者： Ettenberger M. Casanova-Libreros R. chávez-chávez J. Cordoba-Silva J.G. Betancourt-Zapata W. Maya R. Fandiño-Vergara L.A. Valderrama M. Silva-Fajardo I. Hernández-Zambrano S.M. SONO - Centro de Musicoterapia Bogotá Colombia Vice-Rectorate for Research Fundación Universitaria de Ciencias de la Salud Bogotá Colombia Department of Biomedical Engineering University of Los Andes Bogotá Colombia Department of Rehabilitation Sociedad de Cirugía de Bogotá Hospital de San José Bogotá Colombia Faculty of Nursing Fundación Universitaria de Ciencias de la Salud Bogotá Colombia

Background: Elevated anxiety levels are common in patients on mechanical ventilation (MV) and may challenge recovery. Research suggests music-based interventions may reduce anxiety during MV. However, studies investigating specific music therapy techniques, addressing psychological and physiological well-being in patients on MV, are scarce. Methods: This three-arm randomized clinical pilot study was conducted with MV patients admitted to the intensive care unit (ICU) of Hospital San José in Bogotá, Colombia between March 7, 2022, and July 11, 2022. Patients were divided into three groups: intervention group 1 (IG1), music-assisted relaxation; intervention group 2 (IG2), patient-preferred therapeutic music listening; and control group (CG), standard care. The main outcome measure was the 6-item State-Anxiety Inventory. Secondary outcomes were: pain, measured with a visual analog scale; resilience, measured with the Brief Resilience Scale; agitation/sedation, measured with the Richmond Agitation–Sedation Scale; vital signs, including heart rate, blood pressure, oxygen saturation, and respiratory rate; days of MV; extubation success; and days in the ICU. Additionally, three patients underwent electroencephalography during the interventions. Results: Data from 23 patients were analyzed in this study. The age range of the patients was 24–84 years, with a median age of 66 years (interquartile range: 57–74). Of the 23 patients, 19 were female (82.6%). No statistically significant differences between the groups were observed for anxiety (P=0.330), pain (P=0.624), resilience (P=0.916), agitation/sedation (P=0.273), length of ICU stay (P=0.785), or vital signs. A statistically significant difference between the groups was found for days of MV (P=0.019). Electroencephalography measurements showed a trend toward delta and theta band power decrease for two patients and a power increase on both beta frequencies (slow and fast) in the frontal areas of the brain for one patient. Co

关键词： Anxiety Intensive care unit Mechanical ventilation Music therapy Pain

失落的地理诗学:李劼人的中国革命时代的成都书写

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中国现代文学研究丛刊 2024年第5期 48-73页

作者：吴国坤() 胡安定(译) 香港浸会大学中国香港西南大学文学院 400715

李劼人作为一个地方性作家,在一系列小说中富有想象力地呈现了成都的微观历史,个中浓厚的地理历史兴趣和他的生活经历折射了成都独特的现代性转型,凸显了从清帝国到现代民族国家充满暴力和不确定性的转变历程。他通过对历史的微观“空... 详细信息

李劼人作为一个地方性作家,在一系列小说中富有想象力地呈现了成都的微观历史,个中浓厚的地理历史兴趣和他的生活经历折射了成都独特的现代性转型,凸显了从清帝国到现代民族国家充满暴力和不确定性的转变历程。他通过对历史的微观“空间化”来书写自己的家乡,这种微观的视角让作者将地方表述为拥有多元历史和当地日常生活片段之所在,从而挑战了“五四”以来进步的历史观,即单一、普遍的线性历史时间和目的。借助“大河小说”的广阔空间,他将晚清小说的多类代码重新改造为一种开放式的地方写作形式,完成了作为地方记忆载体的三部曲,从而形成了自己独特的风格。李劼人对地方主义和边缘之地的多重表述提供了一种超越精英和通俗二分的视角,从而管窥到地方性的诗学和小说写作的政治性以及地方、区域和国家层面的本土性与现代性之间的深层关联。

关键词：李劼人三部曲地理诗学地方性微观视角