检索结果-南通市图书馆

Jou.nal of Intensive Medicine 2024年第2期4卷 265-268页

作者： josephine Brau.steiner Stephanie Siedler Dominik Jarczak Stefan Klu.e Axel Nierhau. Department of Intensive Care Medicine University Medical Centre Hamburg-EppendorfHamburgGermany

Backgrou.d Capnocytophaga canimorsu.(***)belongs to the family *** is a facu.tative anaerobic Gram-negative bacillu. and belongs to the normal oral microbiota of some mammals,su.h as cats and *** to hu.ans can occu. throu.h the skin after skin abrasion cau.ed by a scratch or a bite.[1]Based on polymerase chain reaction(PCR)analysis,*** is present in saliva in 70%-74%of dogs and 55%-57%of cats.

关键词： belongs enriched scratch

Combinations of electron and proton donors in transition-metal complex mediated nitrogen redu.tion reactions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第7期67卷 2136-2154页

作者： Delong Han Li Yang Hao Hu.ng Priyanka Chakraborty Shashikant u.Dighe Ku.-Wei Hu.ng KAu.T Catalysis Center and Division of Physical Science and Engineering King Abdullah University of Science and TechnologyThuwal 23955Saudi Arabia Agency for Science Technologyand ResearchInstitute of Materials Research and Engineering and Institute of Sustainability for ChemicalsEnergy and EnvironmentSingapore 138634Singapore

Nitrogen fixation is a complex process involving the transfer of six electrons and *** from the conventional Haber-Bosch process,which relies on hydrogen(H_(2))to provide both electrons and protons to redu.e nitrogen(N_(2)),homogeneou. transition metal complex-catalyzed N_(2)redu.tion reactions(NRR)employ an array of electron and proton donors or even electron donors combined with *** the synthesis of diverse catalytic progress,the categories of donors have seen rapid ***,existing literatu.e only provides su.maries regarding the metal,ligands,and *** the significance of electron and proton donor combinations in nitrogen redu.tion reactions,no literatu.e has thorou.hly reviewed this ***,we hereby compiled a comprehensive list of commonly u.ed reagents in N_(2)redu.tion and classified them according to their specific donor *** review presents clear and organized information abou. these combinations,along with a su.mary of their general performance trend in NRR with related ***,we conclu.e the discu.sion by highlighting key points for researchers to consider when selecting catalysts and donor combinations,with the u.timate goal of advancing the field of nitrogen fixation.

关键词： dinitrogen redu.tion reaction redu.ing donor combination transition metal complexes homogeneou. catalysis

Development of immatu.e ovarian teratoma after matu.e teratoma in a girl with familial ovarian teratoma:A case report

在线全文

学校读者我要写书评

暂无评论

World Jou.nal of Clinical Cases 2024年第8期12卷 1442-1447页

作者： u.Chu. Ju.Woo Dae Kang Seok Mo Kim Department of Obstetrics and Gynecology Chonnam National University Medical SchoolGwangju 61469South Korea

BACKGROu.D Immatu.e ovarian teratoma is a rare and aggressive neoplasm that affects you.g *** report is the first to describe the development of immatu.e teratoma after ovarian cystectomy for matu.e teratoma of the ovary in an adolescent female with a family history of ovarian *** Su.MARY A 16-year-old girl who had u.dergone bilateral ovarian cystectomy for matu.e teratomas 3 years ago showed bilateral adnexal tu.ors du.ing her regu.ar u.trasonography follow-u. every 6 *** received laparoscopic bilateral ovarian cystectomy,and final histopathology showed grade-1 immatu.e teratoma of the left ovary and matu.e teratoma of the right *** left salpingo-oophorectomy and staging procedu.es were performed *** mother,maternal au.t,and maternal grandmother had also received su.geries for matu.e ovarian *** It is important to have gu.dance on management of patient and family members with familial ovarian teratomas.

关键词： Familial ovarian teratomas Adolescent female Immatu.e ovarian teratoma Management Case report

Advancing PCB Qu.lity Control: Harnessing YOLOv8 Deep Learning for Real-Time Fau.t Detection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Compu.ers, Materials and Continu. 2024年第1期81卷 345-367页

作者： Khan R.u. Shah F. Khan A.A. Tahir H. Facu.ty of Cognitive Sciences and Hu.an Development Universiti Malaysia Sarawak Kota Samarahan 94300 Malaysia School of Compu.er Science and Engineering Anhui University of Science and Technology Huainan 232001 China Department Electronic Quaid-i-Azam University Islamabad 45320 Pakistan

Printed Circu.t Boards (PCBs) are materials u.ed to connect components to one another to form a working circu.t. PCBs play a cru.ial role in modern electronics by connecting variou. components. The trend of integrating more components onto PCBs is becoming increasingly common, which presents significant challenges for qu.lity control processes. Given the potential impact that even minu.e defects can have on signal traces, the su.face inspection of PCB remains pivotal in ensu.ing the overall system integrity. To address the limitations associated with manu.l inspection, this research endeavors to au.omate the inspection process u.ing the YOLOv8 deep learning algorithm for real-time fau.t detection in PCBs. Specifically, we explore the effectiveness of two variants of the YOLOv8 architectu.e: YOLOv8 Small and YOLOv8 Nano. Throu.h rigorou. experimentation and evalu.tion of ou. dataset which was acqu.red from Peking u.iversity’s Hu.an-Robot Interaction Lab, we aim to assess the su.tability of these models for improving fau.t detection accu.acy within the PCB manu.actu.ing process. Ou. resu.ts reveal the remarkable capabilities of YOLOv8 Small models in accu.ately identifying and classifying PCB fau.ts. The model achieved a precision of 98.7%, a recall of 99%, an accu.acy of 98.6%, and an F1 score of 0.98. These findings highlight the potential of the YOLOv8 Small model to significantly improve the qu.lity control processes in PCB manu.actu.ing by providing a reliable and efficient solu.ion for fau.t detection. © 2024 The Au.hors. Pu.lished by Tech Science Press.

关键词： deep learning object detection Printed circu.t boards (PCB) YOLOv8 YOLOv8 Nano YOLOv8 Small

Predictive factors for percu.aneou. nephrolithotomy bleeding risks

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 Jou.nal of u.ology 2024年第1期11卷 105-109页

作者： u.Phu. Loo Chu. Hou.Yong Gu.n Chou.Teh u.ology Department Sarawak General HospitalKuchingMalaysia

Objective:This stu.y aimed to identify predictive factors for percu.aneou. nephrolithotomy(PCNL)bleeding *** better risk stratification,bleeding in high-risk patient can be anticipated and facilitates early ***:A prospective observational stu.y of PCNL performed at ou. institu.ion was *** adu.ts with radio-opaqu. renal stones planned for PCNL were inclu.ed except those with coagu.opathy,planned for additional *** inclu.ing gender,co-morbidities,body mass index,stone bu.den,pu.ctu.e site,tract dilatation size,operative position,su.geon's seniority,and operative du.ation were stu.ied u.ing stepwise mu.tivariate regression analysis to identify the predictive factors associated with higher estimated hemoglobin(Hb)***:Overall,4.86%patients(n=7)received packed cells *** mean estimated Hb deficiency was 1.3(range 0-6.5)g/dL and the median was 1.0 g/*** mu.tivariate regression analysis revealed that absence of hypertension(p=0.024),pu.ctu.e site(p=0.027),and operative du.ation(p=0.023)were significantly associated with higher estimated Hb ***,the effect sizes are rather small with partial eta-squ.red of 0.037,0.066,and 0.038,*** power obtained was 0.621,0.722,and 0.625,*** factors stu.ied did not correlate with Hb ***:Hypertension,pu.ctu.e site,and operative du.ation have significant impact on estimated Hb deficiency du.ing ***,the effect size is rather small despite adequ.te stu.y power ***,operative position(su.ine or prone),pu.ctu.e nu.ber,or tract dilatation size did not correlate with Hb *** mainstay of redu.ing bleeding in PCNL is still meticu.ou. operative *** stu.y findings also su.gest that PCNL can be safely done by u.ology trainees u.der su.ervision in su.tably selected patient,withou. increasing risk of bleeding.

关键词： Percu.aneou. nephrolithotomy Predictive factor Risk factor Bleeding Blood loss

Assistive techniqu.s and their added valu. for tremor classification in mu.tiple sclerosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neu.al Regeneration Research 2024年第5期19卷 977-978页

作者： Nabin Koirala Abdu.nasir Hossen Ioannis u.Isaias Jens Volkmann Mu.hu.aman Mu.hu.aman Child Stu.y Center School of MedicineYale UniversityNew HavenCTUSA Department of Electrical&Compu.er Engineering Sultan Qaboos UniversityAl-KhodMuscatOman Neu.al Engineering with Signal Analytics and Artificial Intelligence Department of NeurologyUniversity Hospital of WürzburgWürzburgGermany Centro Parkinson e Parkinsonism Azienda Socio Sanitaria Territoriale G.Pini-CTO20126 MilanItaly

Tremor occu.s in abou. half of mu.tiple sclerosis(MS)*** tremor has a broad frequ.ncy range of 2.5-7 Hz,with a higher prevalence of postu.al tremor(44%)compared to intentional tremor(6%)(Alu.i et al.,2001).Tremor may affect the u.per and lower extremities,head,and tru.k,and may even affect the vocal cords in isolated cases of palatal *** tremor is classically attribu.ed to lesions of the brain stem,cerebellu.,or cerebellar pedu.cles,and tremor intensity has been shown to correlate with the nu.ber of lesions or their fu.ctional ***,recent work has demonstrated that inflammatory damage to the cerebello-thalamic and cortico-thalamic pathways might also play an important role in cau.ing tremor,as it co-occu.s with other signs and symptoms of MS su.h as dysarthria,dysmetria,dysdiadochokinesia,and dystonia(Alu.i et al.,2001).

关键词： tremor sclerosis

Stability analysis and soliton solu.ions of the(1+1)-dimensional nonlinear chiral Schrodinger equ.tion in nu.lear physics

在线全文

学校读者我要写书评

暂无评论

Commu.ications in Theoretical Physics 2024年第9期76卷 1-15页

作者： Fazal Badshah Kalim u.Tariq Ahmet Bekir S M Raza Kazmi Emad Az-Zo'bi School of Electrical and Information Engineering Hubei University of Automotive TechnologyShiyan 442002China Department of Mathematics Mirpur University of Science and TechnologyMirpur-10250(AJK)Pakistan Neighbou.hood of Akcaglan Imarli StreetNumber:28/426030EskisehirTurkey Department of Mathematics and Statistics Faculty of ScienceMutah UniversityAlKarak 61710Jordan

The nonlinear Schrodinger equ.tion equ.tion is one of the most important physical models u.ed in optical fiber theory to explain the transmission of an optical *** field of chiral soliton propagation in nu.lear physics is very interesting becau.e of its nu.erou. applications in commu.ications and u.tra-fast signal rou.ing ***(1+1)-dimensional chiral dynamical stru.tu.e that describes the soliton behaviou. in data transmission is dealt with in this work u.ing a variety of in-depth analytical *** work has applications in particle physics,ionised science,nu.lear physics,optics,and other applied mathematical *** are able to develop a variety of solu.ions to demonstrate the behaviou. of solitary wave stru.tu.es,periodic soliton solu.ions,chiral soliton solu.ions,and bell-shaped soliton solu.ions with the u.e of applied ***,in order to verify the scientific calcu.ations,the stability analysis for the observed solu.ions of the governing model is taken into *** addition,the3-dimensional,contou.,and 2-dimensional visu.ls are su.plied for a better u.derstanding of the behaviou. of the *** employed strategies are dependable,u.complicated,and effective;yet have not been u.ilised with the governing model in the literatu.e that is now *** resu.ting ou.comes have impressive applications across a large nu.ber of stu.y areas and compu.ational physics phenomena representing real-world *** methods applied in this model are not u.ilized on the given models in previou. literatu.e so we can say that these describe the novelty of the work.

关键词： solitons the nonlinear Schrodinger equ.tion stability analysis chiral solitons exact solu.ions

Exact solu.ions for magnetohydrodynamic nanoflu.ds flow and heat transfer over a permeable axisymmetric radially stretching/shrinking sheet

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第2期33卷 108-114页

作者： u.S.Mahabaleshwar G.P.Vanitha L.M.Pérez Emad H.Aly I.Pop Department of Stu.ies in Mathematics Davangere UniversityShivagangothriDavangereIndia Departamento de F´ısica FACIUniversidad de Tarapac´aCasilla 7DAricaChile Department of Mathematics Faculty of EducationAin Shams UniversityRoxyCairoEgypt Department of Mathematics Babes-Bolyai University400084 Cluj-NapocaRomania

We report on the magnetohydrodynamic impact on the axisymmetric flow of Al_(2)O_(3)/Cu.nanoparticles su.pended in H_(2)O past a stretched/shrinked *** the u.e of partial differential equ.tions and the corresponding thermophysical characteristics of nanoparticles,the physical flow process is *** resu.tant nonlinear system of partial differential equ.tions is converted into a system of ordinary differential equ.tions u.ing the su.table similarity *** transformed differential equ.tions are solved *** of the magnetic parameter,solid volu.e fraction and stretching/shrinking parameter on momentu. and temperatu.e distribu.ion have been analyzed and interpreted *** skin friction and Nu.selt nu.ber were also *** addition,existence of du.l solu.ion was dedu.ed for the shrinking sheet and u.iqu. solu.ion for the stretching ***,Al_(2)O_(3)/H_(2)O nanoflu.d flow has better thermal condu.tivity on comparing with Cu.H_(2)O ***,it was fou.d that the first solu.ions of the stream are stable and physically realizable,whereas those of the second ones are u.stable.

关键词： magnetohydrodynamic nanoflu.d stretching/shrinking sheet axisymmetric flow analytical solu.ion su.tion/injection

Factors Impacting Benefits of Participatory Forest Management in u.per Imenti Forest, Meru.Cou.ty, Kenya

在线全文

学校读者我要写书评

暂无评论

Open Jou.nal of Forestry 2024年第3期14卷 183-196页

作者： josephine Kamene Mu.yoki Lamech Felix Mogambi Ming’ate Joseph Mu.iithi Mbu.i Tito Edward Mu.ingo Joram Kagombe Kenya Forestry Research Institu.e Nairobi Kenya Department of Environmental Stu.ies and Commu.ity Development Kenyatta University Nairobi Kenya

This stu.y focu.ed on identifying factors affecting the benefits of Participatory Forestry Management (PFM) income generating activities in u.per Imenti Forest and whether they are dependent on statu. of participation in forest management throu.h membership of Commu.ity Forest Association (CFA) or not. Cross-sectional su.vey research design was applied for collecting qu.ntitative data u.ing a semi-stru.tu.ed qu.stionnaire administered to 384 hou.eholds stratified on the basis of PFM participation statu.. Qu.litative data was collected throu.h focu.ed grou. discu.sions u.ing a checklist and key informant interviews u.ing an interview schedu.e. u.ing Statistical Package for Social Sciences version 25, Binomial regression with Wald Chi-squ.re was analyzed to identify factors perceived to be significantly influ.ncing benefits for PFM participants and Pearson Chi-squ.re to compare factors perceived to be affecting PFM and non-PFM participants. CFA members participation in PFM was significantly and positively affected by benefits of PFM income generating activities and forest produ.ts accessed in the forest. Benefits linked to Plantation Establishment for Livelihood Improvement System (PELIS) for CFA members were significantly redu.ed by enforcement of moratoriu. policy since Febru.ry 2018, diseases and pests, poor PELIS gu.deline adherence and animal damage. Benefits related to state forest access for firewood by the CFA members were negatively influ.nced by the moratoriu. policy. Diseases and pests affected benefits associated with bee keeping significantly. Comparing factors u.der different PFM participation statu., crop produ.tion was significantly affected by policy changes, pest and diseases, animal damage and PELIS gu.deline adherence for CFA members than for Non-CFA members. Policy changes also affected the CFA members significantly in firewood collection and access to fodder in the state forest than the Non-CFA members. Hence, su.tainable commu.ity participation

关键词： Participatory Forest Management Commu.ity Forest Association Su.tainable Commu.ity Participation Access to Forest Produ.ts Moratoriu. Policy Income Generating Activities

Air traffic monitoring u.ing optimized ADS-B Cu.eSat constellation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Astrodynamics 2024年第1期8卷 189-208页

作者： Ghu.am Jaffer Rameez AMalik Elias Abou.anios Nazish Ru.ab Ronnie Nader Hans u.Eichelberger Gu. A.E.Vandenbosch Interdisciplinary Centre for Secu.ity Reliability and Trust(SnT)University of LuxembourgLuxembourg1855Luxembourg

The primary techniqu. u.ed for air traffic su.veillance is ***,nowadays,its role in su.veillance is gradu.lly being replaced by the recently adopted Au.omatic Dependent Su.veillance-Broadcast(ADS-B).ADS-B offers a higher accu.acy,lower power consu.ption,and longer range than radar,thu. providing more safety to *** coverage of terrestrial radar and ADS-B is confined to continental parts of the globe,leaving oceans and poles u.covered by real-time su.veillance *** stu.y presents an optimized Low-Earth Orbit(LEO)-based ADS-B constellation for global air traffic su.veillance over intercontinental trans-oceanic flight *** optimization algorithm is based on performance evalu.tion parameters,i.e.,coverage time,satellite availability,and orbit stability(precession and perigee rotation),and commu.ication *** resu.ts indicate that the constellation provides ample coverage in the simu.ated global oceanic *** constellation is a feasible and cost-effective solu.ion for global air su.ervision,which can su.plement terrestrial ADS-B and radar systems.

关键词： constellation au.omatic dependent su.veillance-broadcast (ADS-B) air traffic su.veillance precession perigee rotation.