检索结果-南通市图书馆

The value of community science data to analyze long-term avian trends in understudied regions:The state of birds in Türkiye

引用

Avian research 2023年第4期14卷 695-705页

作者： Kyle D.Kittelberger colby j.Tanner Nikolas D.Orton Çagan Hakkı Sekercioglu School of Biological Sciences University of Utah257 S 1400 ESalt Lake CityUT84112USA KoçUniversity Department of Molecular Biology and GeneticsIstanbulTürkiye KuzeyDoga Dernegi Istasyon MahallesiIsmail Aytemiz Caddesi36200 KarsTürkiye

recent studies have revealed concerning declines in bird populations in Europe and other parts of the *** understudied but biodiverse regions,especially those that are located along key migratory flyways,there is an unmet need to evaluate the status of resident and migratory birdlife for avian conservation *** is especially urgent at a time when recent regional studies have highlighted the scale of the decline of the European and Palearctic *** growing community science datasets may help bridge the gaps in our understanding of long-term regional avifaunal *** this study,we used eBird data submitted by observers in Türkiye to undertake the first long-term assessment of the state of the country’s birds from 2001 to *** evaluated population trends based on presence-absence data of species to determine if any birds have significantly increased or decreased in the country so far this *** provide a list of trends for 418 bird species that had large enough sample sizes of eBird observations from Türkiye,and highlight which species have significantly declined or *** found that 63 species have significantly declined in detection while 120 have significantly increased during the study *** findings provide a baseline for the future monitoring of Türkiye’s birds and help contextualize population changes of birds in Türkiye against those occurring at the continental(Palearctic)***,we include movement classifications for all of the bird species in this *** also provide a framework to effectively use eBird data to assess long-term avifaunal changes at the country-level in other understudied ***,we highlight ways in which eBirders in Türkiye and elsewhere can strengthen the quality and value of community ornithology data for population assessments and avian conservation ecology.

关键词： Avian ecology Bird conservation Citizen science Presence-absence Middle east Movement Palearctic Threat status

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

Procedural complexity independent of P2Y12 reaction unit(PrU)values is associated with acute in situ thrombosis in Pipeline flow diversion of cerebral aneurysms

引用

Stroke & Vascular Neurology 2018年第3期3卷 169-175页

作者： Bowen jiang Matthew T Bender Erick M Westbroek jessica K Campos Li-Mei Lin risheng Xu rafael j Tamargo judy Huang Geoffrey P colby Alexander L Coon Department of Neurosurgery Johns Hopkins University School of MedicineBaltimoreMarylandUSA Department of Neurosurgery University of CaliforniaIrvine School of MedicineOrangeCaliforniaUSA Department of Neurosurgery University of CaliforniaLos AngelesLos AngelesCaliforniaUSA

background Acute in situ thrombosis is an ischaemic phenomenon during Pipeline embolisation device(PED)procedures with potentially high morbidity and *** is controversy regarding the role of platelet function testing with P2Y12 assay as a predictor of intraprocedural thromboembolic *** is limited knowledge on whether procedural complexity influences these *** Data were collected retrospectively on 742 consecutive PED cases at a single *** with intraprocedural acute thrombosis were compared with patients without these *** A cohort of 37 PED cases with acute in situ thrombosis(mean age 53.8 years,mean aneurysm size 8.4 mm)was matched with a cohort of 705 PED cases without intraprocedural thromboembolic events(mean age 56.4 years,mean aneurysm size 6.9 mm).All patients with in situ thrombosis received intra-arterial and/or intravenous *** two groups were evenly matched in patient demographics,previous treatment/subarachnoid hemorrhage(SAH)and aneurysm *** was no statistical difference in postprocedural P2Y12 reaction unit(PrU)values between the two groups,with a mean of 156 in the in situ thrombosis group vs 148 in the control group(p=0.5894).Presence of cervical carotid tortuosity,high cavernous internal carotid artery grade,need for multiple PED and vasospasm were not significantly different between the two *** in situ thrombosis group had statistically significant longer fluoroscopy time(60.4 vs 38.4 min,pr radiation exposure(3476 vs 2160 mGy,pr rates of adjunctive coiling(24.3% vs 8.37%,p=0.0010)and higher utilisation of balloon angioplasty(37.8% vs 12.2%,prombosis cohort had higher incidence of major and minor stroke,intracerebral haemorrhage and length of *** Predictors of procedural complexity(higher radiation exposure,longer fluoroscopy time,adjunctive coiling and need for balloon angioplasty)are asso

关键词： P2Y12 matched balloon

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

Flow diversion covering the M1 origin as a last resort

引用

Stroke & Vascular Neurology 2019年第3期4卷 141-147页

作者： Li-Mei Lin Matthew T Bender Geoffrey P colby Bowen jiang jessica K Campos David A Zarrin robert W C Young risheng Xu justin M Caplan judy Huang rafael j Tamargo Alexander L Coon Department of Neurosurgery University of California IrvineOrangeCaliforniaUSA Department of Neurosurgery Johns Hopkins University School of MedicineBaltimoreMarylandUSA Department of Neurosurgery University of California Los AngelesLos AngelesCaliforniaUSA

Introduction Internal carotid artery termination(ICAT)and proximal A1 aneurysms can be challenging for open surgical clipping or endovascular *** with flow diversion covering the middle cerebral artery(MCA),an end vessel supplying a terminal circulation,has not been *** A prospective,Institutional review Board-approved database was analysed for patients with pipeline embolisation device(PED)placement from the anterior cerebral artery(ACA)to the ICA during cerebral aneurysm *** Nine cases were identified,including five proximal A1,three posterior communicating artery and one ICAT aneurysm *** aneurysm size was 8.3 mm(range 3-17),with 67%saccular and 78%*** indication for treatment was significant dome irregularity(44%),recurrence or enlargement(33%),underlying collagen vascular disorder(11%)and traumatic pseudoaneurysm(11%).Preservation of the ipsilateral ACA(with PED placed in A1)was performed when the anterior communicating artery(67%)or contralateral A1(33%)were absent on *** coiling was done in four cases(44%).There was one major stroke leading to mortality(11%)and one minor stroke(11%).Clinical follow-up was 27 months on ***-up digital subtraction angiography(average interval 15 months)showed complete aneurysm obliteration(88%)or dome occlusion with entry remnant(12%).The jailed MCA showed minimal or mild delay(primarily anterograde flow)in 75%of cases and significant delay(reliance primarily on ACA and external carotid artery collaterals)in 25%.Conclusions Covering the MCA with a flow diverting stent should be reserved for select rare *** attention to blood pressure augmentation during the periprocedural period is necessary to minimise potential ischaemic compromise.

关键词： primarily resort sided

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

Fe_(3)O_(4)对黄铜矿在酸性硫酸铁溶液中铜溶解氧化还原反应的影响

引用

Transactions of Nonferrous Metals Society of China 2024年第6期34卷 1965-1975页

作者： Kolela j NYEMBWE Elvis FOSSO-KANKEU Frans WAANDErS Martin MKANDAWIrE Didier K NYEMBWE Bhekie B MAMBA Water Pollution Monitoring and remediation Initiatives research Group School of Chemical and Minerals EngineeringFaculty of EngineeringNorth-West UniversityPotchefstroomSouth Africa Department of Mining Engineering College of Science Engineering and TechnologyUniversity of South AfricaFlorida Science CampusJohannesburgSouth Africa Department of Metallurgy Faculty of Engineering and Built EnvironmentUniversity of JohannesburgDoornfonteinJohannesburgSouth Africa Department of Chemistry School of Science and TechnologyCape Breton UniversityCanada School of Mining Metallurgy and Chemical EngineeringFaculty of Engineering and the Built EnvironmentUniversity of JohannesburgJohannesburgSouth Africa Institute for Nanotechnology and Water Sustainability College of Science Engineering and TechnologyUniversity of South AfricaFlorida Science CampusJohannesburgSouth Africa

由于钝化层的形成,黄铜矿(Cufes_(2))在氧化条件下浸出通常具有溶解速率缓慢的特点。为了将黄铜矿浸出过程中的钝化效应降至最低并提高铜的回收率,研究了Cufes_(2)在不同pH值(1.0、1.5和1.8)和温度(25和50℃)条件下浸出时,向Fe_(2)(SO_(... 详细信息

由于钝化层的形成,黄铜矿(Cufes_(2))在氧化条件下浸出通常具有溶解速率缓慢的特点。为了将黄铜矿浸出过程中的钝化效应降至最低并提高铜的回收率,研究了Cufes_(2)在不同pH值(1.0、1.5和1.8)和温度(25和50℃)条件下浸出时,向Fe_(2)(SO_(4))_(3)−H_(2)SO_(4)浸出剂中添加磁铁矿(Fe_(3)O_(4))对铜溶解速率的影响。结果表明,溶液pH值、电位和温度在溶解过程中起着关键作用。在pH 1.8、50℃和400 mV的条件下,Fe_(3)O_(4)−Cufes_(2)混合体系中铜的回收率达到最大值(70%),而未添加Fe_(3)O_(4)时,Cufes_(2)中铜的回收率较低(48%)。添加Fe_(3)O_(4)有助于维持较高的氧化还原值。添加Fe_(3)O_(4)还使活化能从79.04 kj/mol降低到53.69 kj/mol。这表明,当Fe_(3)O_(4)存在时,由于形成了更易溶解的中间体斑铜矿(Cu_(5)fes_(4))和辉铜矿(Cu_(2)S),Cufes_(2)更易被氧化。两种溶解过程都受到矿物表面的化学控制。此外,对浸出残渣的矿物学分析表明,当无Fe_(3)O_(4)存在时,作为表面钝化物的黄钾铁矾浓度较高。因此,添加Fe_(3)O_(4)减少了钝化层的形成,提升了铜的回收率。

关键词：黄铜矿溶解磁铁矿电偶钝化

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

retinoic acid signaling acts as a rheostat to balance Treg function

引用

Cellular & Molecular Immunology 2022年第7期19卷 820-833页

作者： Govindarajan Thangavelu Gabriela Andrejeva Sara Bolivar-Wagers Sujeong jin Michael C.Zaiken Michael Loschi Ethan G.Aguilar Scott N.Furlan Chrysothemis C.Brown Yu-Chi Lee Cameron McDonald Hyman colby j.fes.r Angela Panoskaltsis-Mortari Keli L.Hippen Kelli P.MacDonald William j.Murphy Ivan Maillard Geoffrey r.Hill David H.Munn robert Zeiser Leslie S.Kean jeffrey C.rathmell Hongbo Chi randolph j.Noelle Bruce r.Blazar Department of Pediatrics Center for ImmunologyUniversity of MinnesotaMinneapolisMNUSA Center for Immunobiology Vanderbilt University Medical CenterNashville TNUSA Department of Pediatrics University of WashingtonSeattleWAUSA Fred Hutchinson Cancer research Center SeattleWAUSA Howard Hughes Medical Institute Immunology Program and Ludwig CenterSloan Kettering InstituteMemorial Sloan Kettering Cancer CenterNew YorkNYUSA Department of Microbiology and Immunology.Geisel School of Medicine at Dartmouth Norris Cotton Cancer CenterLebanonUSA Department of Immunology Queensland Institute of Medical Research(QIMR)Berghofer Medical Research Institute and School of MedicineUniversity of QueenslandBrisbaneQLDAustralia Departmentof Dermatology School of MedicineUniversity of California DavisSacramentoCAUSA Division of Hematology/Oncology Department of MedicineUniversity of Pennsylvania Perelman School of MedicinePhiladelphiaPAUSA Georgia Cancer Center Augusta UniversityAugustaGAUSA Department of Haematology Oncology and Stem Cell TransplantationFaculty of MedicineFreiburg University Medical CentreFreiburgGermany Boston Children's Hospital and the Dana-Farber Cancer Institute BostonMAUSA Department of Immunology St.Jude Children's ResearchHospitalMemphisTNUSA

regulatory T cells(Tregs)promote immune homeostasis by maintaining self-tolerance and regulating inflammatory *** certain inflammatory conditions,Tregs can lose their lineage stability and *** studies have reported that ex vivo exposure to retinoic acid(rA)enhances Treg function and ***,it is unknown how rA receptor signaling in Tregs influences these processes in ***,we employed mouse models in which rA signaling is silenced by the expression of the dominant negative receptor(DN)rArαin all T *** the fact that DNrArαconventional T cells are hypofunctional,Tregs had increased CD25 expression,STAT5 pathway activation,mTOrC1 signaling and supersuppressor ***,DNrArαTregs had increased inhibitory molecule expression,amino acid transporter expression,and metabolic fitness and decreased antiapoptotic *** function was observed when wild-type mice were treated with a pharmacologic pan-rAr ***,Treg-specific expression of DNrArαresulted in distinct phenotypes,such that a single allele of DNrArαin Tregs heightened their suppressive function,and biallelic expression led to loss of suppression and *** loss of Treg function was not cell intrinsic,as Tregs that developed in a noninflammatory milieu in chimeric mice reconstituted with DNrArαand wild-type bone marrow maintained the enhanced suppressive *** mapping suggested that maintaining Treg stability in an inflammatory milieu requires rA *** findings indicate that rA signaling acts as a rheostat to balance Treg function in inflammatory and noninflammatory conditions in a dose-dependent manner.

关键词： retinoic acid Tregulatory cells Autoimmunity Metabolism mTOrC1 STAT5

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

rare Top Decay <i>t</i>→<i>cγ</i>in General THDM-III

引用

journal of Quantum Information Science 2017年第2期7卷 57-66页

作者： r. Gaitán-Lozano j. H. Montes de Oca r. Martinez Departamento de Física FES-Cuautitlan UNAM Estado de México México Departamento de Física Universidad Nacional de Colombia Bogotá D.C. Colombia

We study the decay t →cγ?with flavor-changing neutral interactions in scalar sector of the type III Two Higgs Doublet Model (THDM-III) with mixing between neutral scalar fields as a result of considering the most general scalar potential. The branching ratio of the decay Br (t?→cγ) is calculated as function of the mixing parameters and masses of the neutral scalar fields. We obtain a Br (t?→cγ) of the order of 10−8 for the considered regions of the mixing parameters. Finally, one upper bound for the possible events is estimated to be n=18 by assuming an expected luminosity of the order of 300 fb−1.

关键词： Two Higgs Doublet Models rare Top Decays

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

EFFECT OF TESTING ENVIrONMENT ON FrACTUrING BEHAVIOr OF Fe_3Si BASED ALLOY

引用

Acta Metallurgica Sinica(English Letters) 2003年第2期16卷 104-109页

作者： j.H.Peng G.L.Chen National Key Laboratory for Nuclear Fuel&Materials China Nuclear Power InstituteChengdu 610041ChinaState Key Laboratory for Advanced Metal MaterialsUniversity of Science&Technology BeijingBeijing 100083China

The mechanical behavior of fes Si based alloy with B2 structure was studied by tension and fracture toughness test in various testing media. The fracture strength σb of Fe3Si alloy decreased in the following order: oxygen, air and hydrogen respectively. The fracture toughness in different testing environment showed that KIC in oxygen is 11.5±0.3MPa·m1/2, and is 8.6±0.4MPa·ml/2 in distilled water. The reduction of fracture toughness is contributed to the environmental reaction of Si with water. Addition of Al element in Fe3Si is not beneficial to improve the intrinsic ductility of Fe-14Si-3Al alloy. The scattering phenomenon of fracture strength was found, and explained by fracture mechanics. It was found by means of SEM that the fracture mode changed from transgranular in oxygen to intergranular in hydrogen gas and distilled water.

关键词： Fe3Si intermetallic mechanical behavior environmental em- brittlement

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

Geoparks： Celebrating Earth heritage, sustaining Local communities

引用

Episodes 2005年第4期28卷 274-278页

作者： Patrick j. Mc Keever Nickolas Zouros Geological Survey of Northern Ireland Colby House Stranmillis Court Belfast BT9 5BF Ireland. Department of Geography University of the Aegean University Hill Mytilene GR-81100 Hellenic Republic.

For too long Earth Science has been the poor relative to Natural Sciences when it comes to conservation, preservation and public promotion. Today, however, in 25 territories across Europe, a combination of Earth Scientists, economists, professional marketers and local people are working together to promote the geological heritage of their areas. These European Geoparks not only advance the protection of their geological heritage but they also use it, in a truly sustainable way, to promote the economic well-being of the people who live there. With the full endorsement of UNESCO, this concept of geoparks is spreading to other parts of the world and is rapidly developing into a global concept. This article looks in detail at the geopark idea -- exactly what geoparks are, how they function, and what benefits they can bring both to geology and to the public.

关键词：地质公园地貌地质条件生态系统地质多样性

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

Total Hadronic Cross Sections

引用

Chinese Physics C 2014年第9期 537-540页

作者： K.A.Olive K.Agashe C.Amsler M.Antonelli j.-F.Arguin D.M.Asner H.Baer H.r.Band r.M.Barnett T.Basaglia C.W.Bauer j.j.Beatty V.I.Belousov j.Beringer G.Bernardi S.Bethke H.Bichsel O.Biebe E.Blucher S.Blusk G.Brooijmans O.Buchmueller University of Minnesota School of Physics and Astronomy 116 Church St.S.E. Minneapolis MN 55455 USA University of Maryland Department of Physics College Park MD 20742-4111 USA Albert Einstein Center for Fundamental Physics Universitat Bern CH-3012 Bern Switzerland Lab.Nazionali di Frascati dell'INFN CP 13 via E.Fermi 40 I-00044 Frascati(roma) Italy Departement de physique Universite de Montreal C.P.6128 succ.centre-ville Montreal(Quebec) H3C 3j7 Canada Pacific Northwest National Laboratory 902 Battelle Boulevard richland WA 99352 USA Department of Physics and Astronomy University of Oklahoma Norman OK 73019 USA Department of Physics University of Wisconsin Madison WI 53706 USA Physics Division Lawrence Berkeley National Laboratory 1 Cyclotron road Berkeley CA 94720 USA CErN European Organization for Nuclear research CH-1211 Geneve 23 Switzerland Department of Physics The Ohio State University 191 W.Woodruff Ave. Columbus OH 43210 COMPAS Group Institute for High Energy Physics rU- 142284 Protvino russia LPNHE IN2P3-CNrS et Universites de Paris 6 et 7 F-75252 Paris France Max-Planck-Institute of Physics 80805 Munich Germany Department of Physics University of Washington Seattle WA 98195 USA Ludwig-Maximilians-Universitat Fakultdt für Physik Schellingstr.4 D-80799 München Germany Enrico Fermi Institute and Department of Physics University of Chicago Chicago IL 60637-1433 USA Department of Physics Syracuse University Syracuse NY 13244 USA Department of Physics Columbia University 538 W.120th Street New York NY 10027 USA High Energy Physics Group Blackett Laboratory Imperial College Prince Consort road London SW7 2AZ UK jefferson Lab 12000 jefferson Ave. Newport News VA 23606 USA Department of Physics University of Virginia PO Box 400714 Charlottesville VA 22904 USA Fermi National Accelerator Laboratory P.O.Box 500 Batavia IL 60510 USA Kavli Institute for Cosmological Physics University of Chicago Chicago IL 60637-1433 USA Department of Physics and Astronomy University of Sussex Falmer Brighton BN1 9QH UK Department o

(Updated September 2013,COMPAS group,fflEP,Protvino)This updated version of the total hadronic cross sections review is based on the first half of 2013 update of the database for total cross section and the ratio of the real-to-imaginary parts of the forward elastic scattering hadronic *** data on total pp coUisions cross sections from CErN-LHC-TOTEM[1]and new data from cosmic rays experiment PAO[2]were *** use a procedure for ranking models as described in[3]to identify the safest parameterizations for ***,the models giving the best fit of accelerator data also reproduce the experimental cosmic ray nucleon-nucleon data extracted from nucleon-air data with no

关键词： Total Hadronic Cross Sections data

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

High-energy collider parameters

引用

Chinese Physics C 2014年第9期 392-396页

HIGH-ENErGY COLLIDEr PArAMETErS:e+e-Colliders（I）Updated in September 2013 with numbers received from representatives of the colliders（contact ***,LBNL）.The table shows parameter values as achieved by july 1,*** are,where appropriate,r.m.s.;unless noted otherwise,energies refer to beam energy;H and V indicate horizontal and vertical directions;*** for *** for the defunct SPEAr,DOrIS,PETrA,PEP,TrISTAN,and VEPP-2M colliders may be found in our 1996 edition（***.D54,1 july 1996,Part I）.

关键词： LHC Pb High-energy collider parameters length CErN BEPC high MHz exp cell KEK

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

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：