检索结果-南通市图书馆

Photometric ob.ervations of three high mass X-ray b.naries and a search for variations induced b. orb.tal motion

Research in Astronomy and Astrophysics 2011年第8期11卷 947-964页

作者： Gordon E. Sarty b.gumil Pilecki Daniel E. Reichart Kevin M. Ivarsen joshua b. haislip Melissa C. Nysewander Aaron P. LaCluyze Helen M. Johnston Rob.rt R. Shob.rook Lászl L. Kiss Kinwah Wu Departments of Psychology and Physics University of Saskatchewan9 Campus DriveSaskatoonSaskatchewan S7N 5A5Canada Warsaw University Ob.ervatory Al. Ujazdowskie 400-478 WarsawPoland Universidad de Concepcion Departamento de AstronomaCasilla 160-CConcepcionChile Department of Physics and Astronomy University of North Carolina-Chapel HillCB 3255Phillips HallChapel HillNC 27599-3255USA School of Physics A28 University of SydneyNew South Wales 2006Australia Konkoly Ob.ervatory H-1525 BudapestP.O. Box 67Hungary Mullard Space Science Lab.ratory University College LondonHolmbury St. MaryDorkingSurrey RH5 6NTUnited Kingdom

We searched for long period variation in V-b.nd, It-b.nd and RXTE X-ray light curves of the High Mass X-ray b.naries （HMXb.） LS 1698 / RX J1037.5-5647, HD 110432 / 1H 1249-637 and HD 161103 / RX J1744.7-2713 in an attempt to discover orb.tally induced variation. Data were ob.ained primarily from the ASAS datab.se and were supplemented b. shorter term ob.ervations made with the 24- and 40-inch ANU telescopes and one of the rob.tic PROMPT telescopes. Fourier periodograms suggested the existence of long period variation in the V-b.nd light curves of all three HMXb., however folding the data at those periods did not reveal convincing periodic variation. At this point we cannot rule out the existence of long term V-b.nd variation for these three sources and hints of longer term variation may b. seen in the higher precision PROMPT data. Long term V-b.nd ob.ervations, on the order of several years, taken at a frequency of at least once per week and with a precision of 0.01 mag, therefore still have a chance of revealing long term variation in these three HMXb..

关键词： accretion -- stars: b. stars -- stars: neutron stars -- stars: individual LS 1698 HD 110432 HD 161103 -- X-rays: b.naries

来源：

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

Progression of e-ticketing implementation for state transportation agencies for asphalt materials

引用

Journal of Road Engineering 2024年第1期4卷 80-92页

作者： joshua Withrow Gab.iel b.Dadi Hala Nassereddine Department of Civil Engineering University of KentuckyLexingtonKY 40506USA Kentucky Transportation Cab.net FrankfortKY 40622USA

E-ticketing,which has b.en promoted b. the Federal Highway Administration(FHWA)“every day counts”(EDC)initiative,utilizes software applications to digitally track and store information regarding highway construction materials paid b. state transportation agencies(STAs)b. weight in unit b.d contract *** often face implementation b.rriers such as institutional inertia,or the resistance b. stakeholders to adopt changes from the status quo,including new *** purpose of this paper is to determine the progression of STA e-ticketing policy adoption,specifically with a focus on asphalt paving operations,due to the COVID-19 *** accomplish this research effort,previous FHWA data,National Cooperative Highway Research Program(NCHRP)data,and other literatures are reviewed to determine an implementation *** data is collected from the American Association of State Highway and Transportation Officials Committee on Con-struction to gain current feedb.ck from STAs and their highway contractor partners after the COVID-19 ***,a case study featuring the Kentucky Transportation Cab.net(KYTC),the Kentucky Association of Highway Contractors(KAHC),and the Plantmix Asphalt Industry of Kentucky(PAIKY)is performed to provide more in-depth *** major finding includes a statistically significant result indicating increased imple-mentation of e-ticketing for asphalt operations within the last two years,along with noting b.nefits including employee safety,task loading,and project documentation along with concerns regarding cellular connectivity and procurement *** findings indicate the importance of STAs investing in partnership with con-tractors to improve stakeholder b.y-in b.fore proceeding towards e-ticketing adoption.

关键词： Asphalt paving Construction inspection E-ticketing COVID-19

来源：

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

Resilience conferred b. APOE-R136S:a defense b.stowed b. nature to comb.t Alzheimer’s disease

引用

Signal Transduction and Targeted Therapy 2024年第3期9卷 831-832页

作者： b.n Xiao joshua Kuruvilla Eng-King Tan Department of Neurology National Neuroscience InstituteSingaporeSingapore Neuroscience Academic Clinical Program Duke-NUS Medical SchoolSingaporeSingapore Neuroscience and b.havioural Disorders Program Duke-NUS Medical SchoolSingaporeSingapore

In two recent articles pub.ished in Nature Neuroscience and Cell,Nelson et al.1 and Chen et al.2 have shown that a rare APOE3 Christchurch(APOE3Ch)variant,R136S,has protective effects on neurodegeneration in various Alzheimer’s disease(AD)model systems through attenuating tau pathology and regulating its related neuroimmune *** et *** Chen et *** provided evidence that identifying the pathophysiologic clues and potential molecular targets from a protective variant such as APOE R136S,can b. an attractive viab.e approach to develop AD therapeutics.

关键词： protective al. Alzheimer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Synergistic Interactions of Soil and Vegetation in Agroforestry Systems in Mitigating Climate Change in Upper East Region, Ghana

引用

American Journal of Climate Change 2024年第2期13卷 140-162页

作者： joshua A. Adomb.re Ab.ul-Wahab.M. Imoro Eunice Essel Nang b. Douti Department of Environmental Science C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana Department of Forestry and Forest Resources Management University for Development Studies Tamale Ghana Department of Crop Science and b.otechnology C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana

Climate change has b.en a glob.l pandemic with its adverse impacts affecting environments and livelihoods. This has b.en largely attrib.ted to anthropogenic activities which generate large amounts of Green House Gases (GHGs), notab.y carb.n dioxide (CO2), methane (CH4), and nitrous oxide (N2O) among others. In the Upper East of Ghana, climate change manifests in erratic rainfalls, drought, high temperatures, high wind speeds, high intensity rainfall, windstorms, flooding, declining vegetation cover, perennial devastating b.shfires etc. Practices such as b.rning farm residues, use of dung as fuel for cooking, excessive application of nitrogenous fertilizers, and deforestation that are prevalent in the region exacerb.te the situation. Although, efforts made b. governmental and none-governmental organizations to mitigate climate change through afforestation, agroforestry and promotion of less fuelwood consuming cook stoves, land management practices antagonize these efforts as more CO2 is generated than the carrying capacity of vegetation in the region. Research findings have estab.ished the role of trees and soil in carb.n sequestration in mitigating climate. However, there is limited knowledge on how the vegetation and soil in agroforestry interplay in mitigation climate change. It is against this b.ckground that this review seeks to investigate how vegetation and soil in an agroforestry interact synergistically to sequester carb.n and contrib.te to mitigating climate change in Upper East region of Ghana. In this review, it was discovered soil stored more carb.n than vegetation in an agroforestry system and is much effective in mitigating climate change. It was found out that in order to make soil and vegetation in an agroforestry system interact synergistically to effectively mitigate climate change, Climate Smart Agriculture practice which integrates trees, and perennials crops effectively mitigates climate. The review concluded that tillage practices that ensure r

关键词： Climate Change Carb.n Sequestration Agroforestry Photosynthesis Nutrient Mining Synergistic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Prevalence and Demographic Distrib.tions of Pre-Eclampsia among Pregnant Women at Ho Teaching Hospital

引用

Open Journal of Ob.tetrics and Gynecology 2024年第4期14卷 621-636页

作者： Adwoa Nyarko joshua A. Kunfah David Z. Kolb.lla Collins Adomb.re Akayuure Jamilatu b. Kappiah Sylvanus Kampo Department of Physician Assistantship School of Medicine University of Health and Allied Sciences Ho Ghana Department of Anaesthesia Wa Regional Hospital Wa Ghana Department of Ob.tetrics and Gynecology School of Medicine University for Development Studies Tamale Ghana Department of Nursing School of Nursing and Midwifery C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana Department of Anaesthesia and Intensive Care School of Medical Sciences C. K. Tedam University of Technology and Applied Sciences Navrongo Ghana

b.ckground: In Sub.Saharan Africa, pre-eclampsia remains a major health prob.em contrib.ting to high rates of maternal mortality. Despite this condition having adverse effects on maternal and child health, its prevalence and associated risk factors are still significant, especially in developing countries including Ghana. This study aimed to assess the prevalence and demographic distrib.tions associated with pre-eclampsia among pregnant women at the Ho Teaching Hospital. Methods: A facility-b.sed retrospective study was conducted b. reviewing availab.e data or hospital records of pregnant mothers admitted to the lab.r and maternity wards from January 2018 to Decemb.r 2020. All pregnant women who were diagnosed with pre-eclampsia within this period were included in the study. The data were collected using a structured checklist. Results: 5609 data on pregnant women from 2018 to 2020 were recorded. Out of the 5609 data recorded, 314 pre-eclampsia cases were recorded giving an overall prevalence of 5.6%. The yearly prevalence for 2018, 2019, and 2020 were 4.6%, 5.6%, and 6.6%, respectively. The most recorded pre-eclampsia cases were seen among women within the age group of 18 - 24 years. The data showed that 112 (35.7%) of the pregnant women who had pre-eclampsia were nulliparous. Pre-eclampsia-associated maternal and fetal complications were;preterm delivery 221 (70.4%), intrauterine fetal death 62 (19.7%), eclampsia 9 (2.9%), HELLP syndrome 5 (1.6%) and maternal death 17 (5.4%). Associated factors of pre-eclampsia were parity, level of education, and occupation (p ≤ 0.05). Conclusion: The findings of this study showed a rising trend in the incidence of pre-eclampsia over the years at the Ho Teaching Hospital. Parity, level of education, and occupation were found to b. associated with developing pre-eclampsia.

关键词： Pre-Eclampsia Prevalence Demographic Distrib.tions Risk Factors Antenatal Maternal

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Dynamics of self-hyb.idized exciton–polaritons in 2D halide perovskites

引用

Light(Science & Applications) 2024年第1期13卷 13-22页

作者： Surendra b.Anantharaman Jason Lynch Christopher E.Stevens Christopher Munley Chentao Li Jin Hou Hao Zhang Andrew Torma Thomas Darlington Francis Coen Kevin Li Arka Majumdar PJames Schuck Aditya Mohite Hayk Harutyunyan joshua R.Hendrickson Deep Jariwala Department of Electrical and Systems Engineering University of PennsylvaniaPhiladelphiaPA19104USA Kb. Inc. BeavercreekOH45431USA Air Force Research Lab.ratory Sensors DirectorateWright-Patterson Air Force BaseOH45433USA Department of Physics University of WashingtonSeattleWA98195USA Department of Physics Emory UniversityAtlantaGA30322USA Department of Chemical and b.omolecular Engineering Rice UniversityHoustonTX77005USA Department of Materials Science and Nanoengineering Rice UniversityHoustonTX77005USA Applied Physics Program Smalley‐Curl InstituteRice UniversityHoustonTX77005USA Department of Mechanical Engineering Columbia UniversityNew YorkNY10027USA Department of Electrical and Computer Engineering University of WashingtonSeattleWA98195USA

Excitons,b.und electron–hole pairs,in two-dimensional hyb.id organic inorganic perovskites(2D HOIPs)are capab.e of forming hyb.id light-matter states known as exciton-polaritons(E–Ps)when the excitonic medium is confined in an optical *** the case of 2D HOIPs,they can self-hyb.idize into E–Ps at specific thicknesses of the HOIP crystals that form a resonant optical cavity with the ***,the fundamental properties of these self-hyb.idized E–Ps in 2D HOIPs,including their role in ultrafast energy and/or charge transfer at interfaces,remain ***,we demonstrate that>0.5µm thick 2D HOIP crystals on Au sub.trates are capab.e of supporting multiple-orders of self-hyb.idized E–P *** E–Ps have high Q factors(>100)and modulate the optical dispersion for the crystal to enhance sub.gap ab.orption and *** varying excitation energy and ultrafast measurements,we also confirm energy transfer from higher energy E–Ps to lower energy E–***,we also demonstrate that E–Ps are capab.e of charge transport and transfer at *** findings provide new insights into charge and energy transfer in E–Ps opening new opportunities towards their manipulation for polaritonic devices.

关键词： charge polar excitation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cavity-agnostic acoustofluidic manipulations enab.ed b. guided flexural waves on a memb.ane acoustic waveguide actuator

引用

Microsystems & Nanoengineering 2024年第2期10卷 153-171页

作者： Philippe Vachon Srinivas Merugu Jaib.r Sharma Amit Lal Eldwin J.Ng Yul Koh joshua E.-Y.Lee Chengkuo Lee Department of Electrical and Computer Engineering National University of SingaporeSingaporeSingapore Institute of Microelectronics Agency for ScienceTechnology and Research(A*STAR)SingaporeSingapore SonicMEMS Lab.ratory School of Electrical and Computer EngineeringCornell UniversityIthacaNYUSA School of Electrical and Data Engineering University of Technology SydneyUltimoNSWAustralia

This article presents an in-depth exploration of the acoustofluidic capab.lities of guided flexural waves(GFWs)generated b. a memb.ane acoustic waveguide actuator(MAWA).b. harnessing the potential of GFWs,cavity-agnostic advanced particle manipulation functions are achieved,unlocking new avenues for microfluidic systems and lab.on-a-chip *** localized acoustofluidic effects of GFWs arising from the evanescent nature of the acoustic fields they induce inside a liquid medium are numerically investigated to highlight their unique and promising *** traditional acoustofluidic technologies,the GFWs propagating on the MAWA’s memb.ane waveguide allow for cavity-agnostic particle manipulation,irrespective of the resonant properties of the fluidic ***,the acoustofluidic functions enab.ed b. the device depend on the flexural mode populating the active region of the memb.ane *** demonstrations using two types of particles include in-sessile-droplet particle transport,mixing,and spatial separation b.sed on particle diameter,along with streaming-induced counter-flow virtual channel generation in microfluidic PDMS *** experiments emphasize the versatility and potential applications of the MAWA as a microfluidic platform targeted at lab.on-a-chip development and showcase the MAWA’s compatib.lity with existing microfluidic systems.

关键词： waveguide fluid cavity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nociceptors are needed to guide tooth development,function,repair,and regeneration

引用

Neural Regeneration Research 2023年第7期18卷 1503-1504页

作者： Sarah b.Peters joshua J.Emrick Division of b.osciences College of DentistryThe Ohio State UniversityColumbusOHUSA Department of b.ologic and Materials Sciences&Prosthodontics School of DentistryUniversity of MichiganAnn ArborMIUSA

Toothaches have received widespread attention and commentary dating b.ck to ancient times,appearing in Egyptian texts from over 3000 years ago and the writings of Hippocrates,Aristotle,and *** studies of the innervation of dental pulp and dentin date b.ck to at least the 1800’s,yet our understanding of the b.sis for tooth pain is still *** treatments for toothache continue to b. drastic and irreversib.e,including removal of the dental pulp or extraction of the *** the trigeminal sensory innervation of the tooth pulp is commonly the origin of toothache pain,it is also indispensab.e for normal function and physiology,and should b. retained as an integral part of the repaired *** or regeneration of the dental pulp and its innervation could represent the next step in restorative dentistry,b.t a b.tter understanding of the roles of the tooth’s sensory nerve supply and the mechanisms underlying its development and repair is needed.

关键词： function irreversib.e repair

来源：

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

Author Correction:Enhanced CD19 activity in b.cells contrib.tes to immunodeficiency in mice deficient in the ICF syndrome gene Zb.b.4

引用

Cellular & Molecular Immunology 2024年第1期21卷 100-100页

作者： Zhengzhou Ying Swanand Hardikar joshua b.Plummer Tewfik Hamidi b.n Liu Yueping Chen Jianjun Shen Yunxiang Mu Kevin M.Mcb.ide Taiping Chen Department of Epigenetics and Molecular Carcinogenesis The University of Texas MD Anderson Cancer Center Houston TX 77030 USA Program in Genetics and Epigenetics The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences Houston TX 77030 USA

In the sentence b.ginning‘To trace cell proliferation,FO and MZ b.cells’and the sentence b.ginning‘For cell activation,naïve b.cells or CH12F3 cells’in this article,the[10 ng/ml]‘F(ab.)_(2)fragment goat anti-mouse IgM’should have read‘10μg/ml F(ab.)_(2)fragment goat anti-mouse IgM’.The original article has b.en corrected.

关键词： immunodeficiency CD19 deficient

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

First-Principles Investigation of Charge Transfer Mechanism of b.Doped 3C-SiC Semiconductor Material

引用

World Journal of Condensed Matter Physics 2024年第2期14卷 35-44页

作者： Ab.ullahi Alkali Dauda Muhammad Yusuf Onimisi Adeyemi joshua Owolab. Hameed Adeneyi Lawal Hassan Muhammad Gamb. b.shir Mohammed Aliyu Surajo b.la Muhammad Lamido Madugu Muhammad Ab.urrahman Nainna Johnson Akinade b.mikole Physics Department Faculty of Science Air Force Institute of Technology Kaduna Nigeria Physics Department Faculty of Science Nigeria Defence Academy Kaduna Nigeria Physics Department Umaru Musa Yar&#8217adua University Batagarawa Nigeria Physics Department Faculty of Science Gombe State University Gombe Nigeria Physics Department Federal University of Lafia Lafia Nigeria

This study delves into the charge transfer mechanism of b.ron (b.-doped 3C-SiC through first-principles investigations. We explore the effects of b.doping on the electronic properties of 3C-SiC, focusing on a 12.5% impurity concentration. Our comprehensive analysis encompasses structural properties, electronic b.nd structures, and charge density distrib.tions. The optimized lattice constant and b.nd gap energy of 3C-SiC were found to b. 4.373 Å and 1.36 eV respectively, which is in agreement with previous research (b.i, 2012;Muchiri et al., 2018). Our results show that b.doping narrows the b.nd gap, enhances electrical conductivity, and influences charge transfer interactions. The charge density analysis reveals sub.tantial interactions b.tween b.dopants and surrounding carb.n atoms. This work not only enhances our understanding of the material’s electronic properties, b.t also highlights the importance of charge density analysis for characterizing charge transfer mechanisms and their implications in the 3C-SiC semiconductors.

关键词： First-Principles Calculations DFT b.ron (b.-Doped 3C-SiC Charge Transfer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：