检索结果-南通市图书馆

Synthetic brochosomes:Design,synthesis,and applications

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第2期17卷 734-742页

作者： Lin w.ng Jinsol Choi Tak-Sing wong Department of Mechanical Engineering The Pennsylvania State UniversityUniversity ParkPA 16802USA Materials Research institute The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Biomedical Engineering The Pennsylvania State UniversityUniversity ParkPA 16802USA

Brochosomes,w.ich are nanoscopic buckyball-shaped granules produced by leafhoppers,are one of the most intricate structures discovered in *** functions of brochosomes have been proposed but only a few.have been experimentally validated due to the challenge of fabricating their synthetic *** in micro-and nanofabrication have recently led to the emergence of synthetic brochosomes,opening up new.possibilities for innovative *** review.explores the early discovery of natural brochosomes and their geometrical features,follow.d by the recent progress in fabricating synthetic brochosomes and their *** on future applications and challenges in the scalable manufacturing of synthetic brochosomes are discussed.

关键词： synthetic brochosomes leafhopper antireflection superhydrophobicity surface-enhanced Raman scattering photocatalyst energy harvesting

Artificial intelligence analysis of videos to augment clinical assessment:an overview

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第4期19卷 717-718页

作者： David C.wong Stefan w.lliams University of Leeds Leeds Teaching Hospitals Trust LeedsUK

Observation is a fundamental part of the practice of clinical *** of movement is particularly important for the *** such as Parkinson’s disease,multiple sclerosis,stroke,epilepsy,and many others affect a person’s movement in characteristic *** some conditions,changes in the patient’s voice can be included in this-changes in sound caused by changes in the movements of *** clinician’s detection of a characteristic abnormality,and their judgment of its severity,plays a central role in both diagnosis and the assessment of prognosis or response to ***,that practice depends upon a limited resource of experienced *** addition,these experts are limited by human visual judgment,w.ich cannot reliably or precisely detect and measure small or subtle changes in movement(w.lliams et al.,2023).

关键词： clinical epilepsy diagnosis

Free-electron crystals for enhanced X-ray radiation

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第7期13卷 1299-1309页

作者： Lee w.i w.sley wong Xihang Shi Aviv karnieli Jeremy Lim Suraj kumar Sergio Carbajo ido kaminer Liang Jie wong School of Electrical and Electronic Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore. Solid State institute and Faculty of Electrical and Computer Engineering Technion–Israel Institute of TechnologyHaifa 3200003Israel. School of Electrical Engineering Fleischman Faculty of EngineeringTel Aviv UniversityTel Aviv 69978Israel Department of Applied Physics Stanford UniversityStanfordCA 94305USA. Science Mathematics and TechnologySingapore University of Technology and Design8 Somapah RoadSingapore 487372Singapore. Electrical and Computer Engineering Department UCLA420 WestwoodLos AngelesCA 90095USA. Physics and Astronomy Department UCLA475 Portola PlazaLos AngelesCA 90095USA. SLAC National Accelerator Laboratory Stanford University2575 Sand Hill RoadMenlo ParkCA 94025USA

Bremsstrahlung—the spontaneous emission of broadband radiation from free electrons that are deflected by atomic nuclei—contributes to the majority of X-rays emitted from X-ray tubes and used in applications ranging from medical imaging to semiconductor chip ***,w. show.that the bremsstrahlung intensity can be enhanced significantly—by more than three orders of magnitude—through shaping the electron w.vefunction to periodically overlap w.th atoms in crystalline ***,w. show.how.to shape the bremsstrahlung X-ray emission pattern into arbitrary angular emission profiles for purposes such as unidirectionality and ***,w. find that these enhancements and shaped emission profiles cannot be attributed solely to the spatial overlap betw.en the electron probability distribution and the atomic centers,as predicted by the paraxial and nonrecoil theory for free electron light *** w.rk highlights an unprecedented regime of free electron light emission w.ere electron w.veshaping provides multi-dimensional control over practical radiation processes like *** results pave the w.y tow.rds greater versatility in table-top X-ray sources and improved fundamental understanding of quantum electron-light interactions.

关键词： overlap attributed arbitrary

Tribological behavior of lubricant-impregnated porous polyimide

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Friction 2024年第4期12卷 711-725页

作者： Jinbang Li Ningning ZHOU Janet S.S.wong School of Mechanical Engineering and Mechanics Ningbo UniversityNingbo 315211China Beijing key Laboratory of Long-life Technology of Precise Rotation and Transmission Mechanisms Beijing Institute of Control EngineeringBeijing 100029China Department of Mechanical Engineering Imperial College LondonLondon SW72AZUK

Porous materials impregnated w.th lubricants can be used in conditions w.ere limited lubricant is *** this w.rk,three porous polyimides(PPi)w.th different densities w.re ***(PAO)impregnated PPi(iPPi)discs w.re rubbed against steel and sapphire *** operando observations of the iPPi-sapphire contacts show.that oil is released under an applied load,forming a meniscus around *** at the outlet is created at high sliding *** amount of released oil increases w.th increasing PPi *** moduli,E*,estimated based on the actual contact size show.that trapped oil in iPPis contributes to load *** higher speeds,tribological rehydration of the contact occurs in low.density iPPi,w.th that E*rises w.th *** high density PPis,high speeds give a constantly high E*w.ich is limited by the viscoelastic properties of the PPi netw.rk and possibly the rate of oil *** of iPPi-steel contacts is governed by the mechanical properties of the PPi,the flow.of the lubricant,and the roughness of the PPi *** low.and medium-density(highly porous,high roughness)PPis,large amount of oil is released,and lubrication is mainly via lubricant restricted in the contact in the pores and possibly tribological *** high density(low.porosity)PPi,w.th low.r roughness,hydrodynamic lubrication is achieved w.ich gives the low.st *** results show.that polymeric porous materials for effective lubrication require the optimization of its surface roughness,stiffness,oil flow.and oil retentions.

关键词： polyimide porous material friction mechanism polymer limited lubrication

Navigating reflux disease after achalasia treatments:Balancing risks and benefits

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

w.rld Journal of Gastroenterology 2024年第21期30卷 2740-2743页

作者： Ew.n A Griffiths Enoch wong Department of Upper Gastrointestinal Surgery University Hospitals Birmingham NHS Foundation TrustBirmingham B152GWWest MidlandsUnited Kingdom Department of immunology and immunotherapy University of BirminghamBirmingham B152TTWest MidlandsUnited Kingdom

The peroral endoscopic myotomy(POEM)procedure has revolutionized the management of achalasia in many centres around the w.rld as it offers patients a minimally invasive endoscopic solution to their dysphagia caused by *** its success in alleviating dysphagia,concerns regarding postoperative gastroesophageal reflux disease have emerged as a pertinent issue w.ich are not fully *** this study,Nabi et al have comprehensively review.d the topic of the prediction,prevention and management of gastroesophageal reflux after *** is a purely endoscopic procedure w.ich is usually performed w.thout any anti-reflux *** patients may be better served by a laparoscopic Heller’s myotomy and fundoplication and it is important that gastroenterologists and surgeons provide comprehensive risks and benefits of each achalasia treatment option so that patients can decide w.at treatment is best for *** article by Nabi et al provides a comprehensive review.of the current status of this issue to allow.these discussions to occur.

关键词： Achalasia Gastro-esophageal reflux disease Laparoscopic heller’s myotomy Peroral endoscopic myotomy Fundoplication

Transfer of Highest w.ight Modules and Small Unipotent Representations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2024年第3期40卷 772-791页

作者： Hai An HE Jing Song HUANG kayue Daniel wong Department of Mathematics College of SciencesShanghai UniversityShanghai 200444P.R.China New.ouch Center for Mathematics of Shanghai University Shanghai 200444P.R.China Mathematics Research Center School of Science and EngineeringThe Chinese University of Hong KongShenzhen 518172P.R.China

w. study the transfer betw.en small special unipotent representations for all equal rank real forms of type E_(6) and E_(7). As a consequence, one can verify these modules are unitarity using the results of w.llach an... 详细信息

关键词： Unipotent representations w.llach representations Transfer of unitary modules

Options and survival benefits of conversion therapy for unresectable hepatocellular carcinoma

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

w.rld Journal of Gastroenterology 2024年第18期30卷 2479-2481页

作者： wong Hoi She Tan To Cheung Department of Surgery The University of Hong KongHong Kong 999077China

in the study by w. et al,patients w.th unresectable hepatocellular carcinoma w.re subjected to transarterial chemoembolization(TACE)as a conversion therapy in order to render their tumors suitable for resection.A nomogram w.s devised and show. to be effective in predicting the survival of these *** of the results,how.ver,is questionable since the study subjects consisted of patients w.o had resection after TACE w.ile excluding patients w.th the same disease but not suitable for *** can be considered to be an option for conversion ***,markers for determining responses to a conversion therapy and for guiding the decision betw.en TACE and sequential immunotherapy have been *** question of w.ether effective conversion therapy can truly enhance overall survival remains unansw.red.

关键词： Conversion therapy immunotherapy Liver resection Survival Transarterial chemoembolization Unresectable hepatocellular carcinoma

Effect of pipe installation and external load on buried steel pipe responses:Experimental and numerical investigations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Underground Space 2024年第2期15卷 44-58页

作者： Yadong Zhang Ron Chik-kwong wong Jianfeng Chen w.i Su Department of Civil Engineering Schulich School of EngineeringUniversity of CalgaryCalgaryAB T2N 1N4Canada Department of Geotechnical Engineering College of Civil EngineeringTongji UniversityShanghai 200092China

During pipe installation,compacting soil at pipe sides causes an initial pipe deformation w.ich is know. as the"peaking"***,in conventional pipe design codes,only pipe deformation caused by vertical overburden is considered w.ile the"peaking"effect is *** this study,a full-scale test w.s conducted on a Grade X52 steel pipe w.th a diameter of 600 mm to investigate the impacts of both soil compaction and vertical overburden on pipe *** compaction and external load w.re found to elongate and shorten the vertical pipe diameter,***"peaking"effect w.s observed during the installation procedure accompanied by the highest pipe stress measured at the pipe ***,a tw.-dimensional finite element model w.s created and validated based on the calculated pipe stresses from the experimental study.A parametric study w.s performed thereafter to numerically study the impacts of soil w.ter content,pipe w.ll thickness,compaction pressure,and lift thickness on pipe responses due to soil compaction and external *** increase in the"peaking"effect is observed w.th increasing soil w.ter content and compaction pressure,w.ile an increase in pipe w.ll thickness or lift thickness w.uld cause a decrease in the"peaking"effect.

关键词： X52 steel Soil compaction External load Peaking effect Pipe deflection Soil arching

Monogenic features of urolithiasis: A comprehensive review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Urology 2024年第2期11卷 169-179页

作者： kyo Chul koo Abdulghafour Halaw.ni Victor k.F.wong Dirk Lange Ben H.Chew Department of Urology Yonsei University College of MedicineSeoulRepublic of Korea Department of Urology King Abdulaziz UniversityJeddahSaudi Arabia Department of Urological Sciences University of British ColumbiaStone Centre at Vancouver General HospitalVancouverBritish ColumbiaCanada

Objective: Urolithiasis formation has been attributed to environmental and dietary factors. How.ver, evidence is accumulating that genetic background can contribute to urolithiasis formation. Advancements in the identification of monogenic causes using high-throughput sequencing technologies have show. that urolithiasis has a strong heritable ***: This review.describes monogenic factors implicated in a genetic predisposition to urolithiasis. Peer-review.d journals w.re evaluated by a PubMed search until July 2023 to summarize disorders associated w.th monogenic traits, and discuss clinical implications of identification of patients genetically susceptible to urolithiasis ***: Given that more than 80% of urolithiases cases are associated w.th calcium accumulation, studies have focused mainly on monogenetic contributors to hypercalciuric urolithiases, leading to the identification of receptors, channels, and transporters involved in the regulation of calcium renal tubular reabsorption. Nevertheless, available candidate genes and linkage methods have a low.resolution for evaluation of the effects of genetic components versus those of environmental, dietary, and hormonal factors, and genotypes remain undetermined in the majority of urolithiasis ***: The pathophysiology underlying urolithiasis formation is complex and multifactorial, but evidence strongly suggests the existence of numerous monogenic causes of urolithiasis in humans.

关键词： Gene Genetic expression inheritance pattern Urolithiasis