检索结果-南通市图书馆

Low-power SiPm readout BETA ASIC for space applications

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第3期35卷 153-169页

作者： Anand Sanmukh Sergio Gómez Albert Comerma Joan mauricio rafel manera Andreu Sanuy Daniel Guberman roger Catala Albert Espinya marina Orta Oscar de la Torre David Gascon Departament de Física Quàntica i Astrofísica(FQA) Institut de Ciències del Cosmos(ICCUB)Universitat de Barcelona(UB)08028 BarcelonaSpain Institut d’Estudis Espacials de Catalunya(IEEC) 08034 BarcelonaSpain Electronics Depar.ment Serra Hunter fellow at Polytechnic University of Catalonia(UPC)08019 BarcelonaSpain

The BETA application-specific integrated circuit(ASIC)is a fully progr.mmable chip designed to amplify,shape and digitize the signal of up to 64 Silicon photomultiplier(SiPm)channels,with a power consumption of approximately~1 mW/*** to its dual-path gain,the BETA chip is capable of resolving single photoelectrons(phes)with a signal-to-noise ratio(SNr)>5 while simultaneously achieving a dynamic range of~4000 ***,BETA can provide a cost-effective solution for the readout of SiPms in space missions and other applications with a maximum rate below 10 *** this study,we describe the key characteristics of the BETA ASIC and present an evaluation of the performance of its 16-channel version,which is implemented using 130 nm *** ASIC also contains two discr.minators that can provide trigger signals with a time jitter down to 400 ps FWHm for 10 *** linearity error of the charge gain measur.ment was less than 2%for a dynamic range as large as 15 bits.

关键词： radiation detectors Silicon photomultipliers Photon sensors Front-end electronics mixed-mode ASICs Space technology

应用物联网技术加速畜禽精准饲喂:从概念到实施

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2024年第14期69卷 2156-2160页

作者：苏家宜谭碧娥蒋宗勇吴德 C.m.Nyachoti Sung Woo Kim 印遇龙王婧 Key Laboratory of Hunan Province for the Products Quality regulation of Livestock and Poultry College of Animal Science and TechnologyHunan Agricultural UniversityChangsha 410128China Institute of Animal Science Guangdong Academy of Agricultural SciencesGuangzhou 510640China Key Laboratory for Animal Disease-resistant Nutrition of the ministry of Education of China and Animal Nutrition InstituteSichuan Agricultural UniversityChengdu 611130China Depar.ment of Animal Science University of ManitobaWinnipeg R3T 2N2Canada Depar.ment of Animal Science North Carolina State UniversityRaleigh 27695USA Laboratory of Animal Nutritional Physiology and metabolic Process Key Laboratory of Agro-Ecological Processes in Subtropical RegionNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of SciencesChangsha 410128China Yuelushan Laboratory Changsha 410128China

maximizing sow reproductive performance is vital for ensuring healthy piglet supply,feed efficiency,and profitability,which requires understanding factors such as nutrition,disease control,genetics,herd management,and their *** is well documented that most reproductive issues in sows stem fr.m extr.me fluctuations in body reserves[1].Thus,optimizing reproduction should prioritize regulating body reserves and making continuous nutritional adjustments throughout a sow’s life[1,2].However,the traditional one-size-fits-all feeding strategy may not meet individual sow needs under varying *** feeding strategy leads to nutrient under-or over-feeding,which may result in a lack of performance and health issues on the one hand,and economic loss and negative environmental effects on the other.

关键词： feeding extr.me reserves

Effects of far-off and close-up transition cow feeding on uterine health,postpartum anestrous interval,and reproductive outcomes in pasture-based dairy cows

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2020年第2期11卷 493-503页

作者： S.meier J.K.Kay B.Kuhn-Sherlock A.Heiser.m.D.mitchell m.A.Crookenden m.Vailati riboni J.J.Loor J.r.roche DairyNZ Limited Private Bag 3221Hamilton 3240New Zealand Agresearch Hopkirk Research InstituteGrasslands Research CentrePalmerston North 4442New Zealand Centre for Children’s Health research Queensland University of TechnologyLevel 662 Graham StreetSouth BrisbaneQueensland 4101Australia DairyNZ Limited c/o University of Auckland3A Symonds StAuckland 1010New Zealand Depar.ment of Animal Sciences University of IllinoisUrbana 61801USA ministry for Pr.mary Industries-manatūAhu matua Charles Ferguson TowerPipiteaWellington 6140New Zealand School of Biological Sciences University of AucklandPrivate Bag 92019Auckland 1142New Zealand

Background:In seasonal,pasture-based,dairy production systems,cows must recover fr.m calving and become pregnant within two to 3 *** achieve this,the uterus must involute and ovulation must occur and continue at regular *** these processes are affected by the cows’nutritional or.metabolic status post-calving,the objective of this study was to evaluate the effect of cow feeding strategies on uterine health,the length of postpartum anestrous interval,and reproductive *** treatments consisted of two feeding strategies during late-lactation and early dry period(far-off period;starting 4-month pre-calving)and three close-up dry period feeding regimes(1-month pre-calving)in a 2×3 factorial *** randomly assigned 150 cows to one of two far-off *** late lactation,the herds(n=75 cows per herd)were either control-fed(Controlfed)or over-fed(Overfed)to achieve a low or high body condition score(4-month pre-calving;BCS;~4.25 and^4.75;10-point scale)at cessation of *** each of these treatments,three feeding levels were applied during the close-up period(1-month pre-calving):~65%(Feed65),~90%(Feed90),or^120%(Feed120)of metabolizable energy(mE)intakes relative to pre-calving ***:Uterine health improved(***(PmN)cells declined)with increased feeding during the close-up period for cows in the Overfed *** reverse was evident for the Controlfed group with the greatest PmN at the highest intakes during the close-up *** postpartum anoestrous interval(PPAI)was shorter in cows fr.m the Overfed group when moderately fed(Feed90)during the close-up period;in comparison,the PPAI was shorter in the Controlfed group,when those cows were overfed in the close-up period(Feed120).The cows in the Overfed treatment had greater conception and pregnancy rates if cows had moderate dry matter intakes(Feed90)during the close-up period;these reproductive variables were less under excessive feed inta

关键词： Close-up Dairy cows Far-off reproduction Transition period

Genetic relationship between purebred and crossbred sow longevity

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2017年第1期8卷 24-29页

作者： C.E.Abell r.L.Fernando T.V.Serenius m.F.rothschild K.A.Gray K.J.Stalder Depar.ment of Animal Science Iowa State University Ames IA 50011-3150 USA Figen Ltd. PO Box 31960101 Seinajoki Finland Smithfield Pr.mium Genetics 316 W. Charity Rd Rose Hill NC 28458 USA

Background： The overall breeding objective for a nucleus swine selection progr.m is to improve crossbred commercial performance. most genetic improvement progr.ms are based on an assumed high degree of positive relationship between purebred performance in a nucleus herd and their relatives＇ crossbred performance in a commercial herd. The objective of this study was to examine the relationship between purebred and crossbred sow longevity performance. Sow longevity was defined as a binary trait with a success occurring if a sow r.mained in the herd for a certain number of parities and including the cumulative number born alive as a measure of reproductive success. Heritabilities, genetic correlations, and phenotypic correlations were estimated using ***： results indicated little to no genetic correlations between crossbred and purebred reproductive *** indicates that selection for longevity or lifetime performance at the nucleus level may not result in improved longevity and lifetime performance at the crossbred level. Early parity performance was highly correlated with lifetime performance indicating that an indicator trait at an early parity could be used to predict lifetime performance. This would allow a sow to have her own record for the selection trait before she has been r.moved fr.m the ***： results fr.m this study aid in quantifying the relationship between purebred and crossbred performance and provide information for genetic companies to consider when developing a selection progr.m where the objective is to improve crossbred sow performance. Utilizing crossbred records in a selection progr.m would be the best way to improve crossbred sow productivity.

关键词： Binary traits Sow longevity Threshold model

New Zealand deer farming and management systems for quality velvet antler production:An overview:

在线全文

学校读者我要写书评

暂无评论

New Zealand deer farming and management systems for quality ...

Control of animal brucellosis: the malaysian experience

第二届中国鹿业发展大会

作者： A J Pearse J m Tacon r E Griffiths Deer Industry New Zealand PO Box 10702 Wellington6143New Zealand

New Zealand’s 40 year old modem deer farming systems are based on the extensive natural pastoral farming of red deer and elk(Cervus elaphus ssp).Within the industry’s～3000 farmers(most whom produce venison),specialists farm an adult velvet antler herd producing approximately 450 tonnes of velvet antler *** systems concentrate on both genetic improvements,which have been spectacular,and meeting the nutritional demands for growth of quality *** agreed systems are developed for

关键词： deer farming velvet antler quality production quality assurance New Zealand red deer (Chilu) Elk-Wapiti(malu) National Velvetting Standards Body

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical medicine 2016年第12期9卷 1111-1115页

作者： m.Zamri-Saad m.I.Kamarudin research Centre for r.minant Diseases Faculty of Veterinary MedicineUniversiti Putra Malaysia Depar.ment of Veterinary Services malaysia Ministry of Agriculture and Agro-based Industry

Brucellosis is a zoonotic disease characterized by reproductive failure in animals and undulent fever in humans. In cattle, it is caused by Brucella abortus while in goats by Brucella melitensis, the main cause of brucellosis in humans. Brucellosis in livestock has been associated with importation of animals fr.m breeder herd of unknown disease status. The prevalence of bovine brucellosis Brucella abortus in 2014 ranged between 1%-2% in Thailand and Indonesia, and 4%-5% in malaysia and myanmar. Prevalence of goat brucellosis Brucella melitensis is approximately 1% in malaysia and Thailand. ‘Test-and-slaughter' is the general policy against brucellosis adopted by most ASEAN countries to eradicate the disease. Under this progr.m, the rose Bengal Plate Test(rBPT) is used as the screening test to identify infected farm/herd while the Complement Fixation Test(CFT) is the confirmatory test. The test-and-slaughter eradication strategy that was implemented since 1979 had managed to keep the prevalence rate to less than 5%, fr.m 3.3% in 1979, 0.23% in 1988, 1% in 1998 and 5% in 2016. The test-and-slaughter progr.m seemed effective in reducing the prevalence of brucellosis but was unable to eradicate the disease due to several factors, which include failure to locate and identify the r.maining affected animals and to control their.movement, importation of breeder animals fr.m non-brucellosis free countries and lack of participation by the farmers following unrealiable test results. To support the eradication policy, research activities since 1980 s have suggested combinations of serological tests to improve diagnosis while surveillance should be focused on hotspots areas. The prevalence can be further reduced by strictly sourcing breeder animals fr.m brucella-free areas or countries.

关键词： Brucellosis Animal Control

Search for the rare decays W^(+)→D_(s)^(+)γ and Z→D^(0)γ at LHCb

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

中国物理C:英文版 2023年第9期47卷 14-26页

作者： r.Aaij A.S.W.Abdelmotteleb C.Abellan Beteta F.Abudinén T.Ackernley B.Adeva m.Adinolfi P.Adlarson H.Afsharnia C.Agapopoulou C.A.Aidala Z.Ajaltouni S.Akar K.Akiba J.Albrecht F.Alessio m.Alexander A.Alfonso Albero Z.Aliouche P.Alvarez Cartelle r.Amalric S.Amato J.L.Amey Y.Amhis L.An L.Anderlini m.Andersson A.Andreianov m.Andreotti D.Andreou D.Ao F.Archilli A.Artamonov m.Artuso E.Aslanides m.Atzeni B.Audurier S.Bachmann m.Bachmayer J.J.Back A.Bailly-reyre P.Baladron rodriguez V.Balagura W.Baldini J.Baptista de Souza Leite m.Barbetti r.J.Barlow S.Barsuk W.Barter.m.Bartolini F.Baryshnikov J.m.Basels G.Bassi B.Batsukh A.Battig A.Bay A.Beck m.Becker F.Bedeschi I.B.Bediaga A.Beiter V.Belavin S.Belin V.Bellee K.Belous I.Belov I.Belyaev G.Benane G.Bencivenni E.Ben-Haim A.Berezhnoy *** *** Andres D.Berninghoff H.C.Bernstein C.Bertella A.Bertolin C.Betancourt F.Betti Ia.Bezshyiko S.Bhasin J.Bhom L.Bian m.S.Bieker N.V.Biesuz S.Bifani P.Billoir A.Biolchini m.Birch F.C.r.Bishop A.Bitadze A.Bizzeti m.P.Blago T.Blake F.Blanc J.E.Blank S.Blusk D.Bobulska J.A.Boelhauve O.Boente Garcia T.Boettcher A.Boldyrev C.S.Bolognani r.Bolzonella N.Bondar F.Borgato S.Borghi m.Borsato J.T.Borsuk S.A.Bouchiba T.J.V.Bowcock A.Boyer C.Bozzi m.J.Bradley S.Braun A.Brea rodriguez J.Brodzicka A.Brossa Gonzalo J.Brown D.Brundu A.Buonaura L.Buonincontri A.T.Burke C.Burr A.Bursche A.Butkevich J.S.Butter J.Buytaert W.Byczynski S.Cadeddu H.Cai r.Calabrese L.Calefice S.Cali r.Calladine m.Calvi m.Calvo Gomez P.Campana D.H.Campora Perez A.F.Campoverde Quezada S.Capelli L.Capriotti A.Carbone G.Carboni r.Cardinale A.Cardini P.Carniti L.Carus A.Casais Vidal r.Caspary G.Casse m.Cattaneo G.Cavallero V.Cavallini S.Celani J.Cerasoli D.Cervenkov A.J.Chadwick m.G.Chapman m.Charles Ph.Charpentier C.A.Chavez Barajas m.Chefdeville C.Chen S.Chen A.Chernov S.Chernyshenko V.Chobanova S.Cholak m.Chrzaszcz A.Chubykin V.Chulikov P.Ciambrone m.F.Cicala X.Cid Vidal G.Ciezarek G.Ciullo P.E.L.Clarke m.Clemencic H.V.Cliff J.Closier J.L.Cobbledick V.Coco J.A.B.Coelho J.Cogan E.Cognera Centro Brasileiro de Pesquisas Físicas(CBPF) Rio de JaneiroBrazil Universidade Federal do rio de Janeiro(UFrJ) Rio de JaneiroBrazil Center for High Energy Physics Tsinghua UniversityBeijingChina Institute Of High Energy Physics(IHEP) BeijingChina School of Physics State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijingChina University of Chinese Academy of Sciences BeijingChina Institute of Particle Physics Central China Normal UniversityWuhanHubeiChina Université Savoie mont Blanc CNRSIN2P3-LAPPAnnecyFrance UniversitéClermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Aix marseille Univ CNRS/IN2P3CPPMMarseilleFrance UniversitéParis-Saclay CNRS/IN2P3IJCLabOrsayFrance Laboratoire Leprince-ringuet CNRS/IN2P3Ecole PolytechniqueInstitut Polytechnique de ParisPalaiseauFrance LPNHE Sorbonne UniversitéParis Diderot Sorbonne Paris CitéCNRS/IN2P3ParisFrance I.Physikalisches Institut RWTH Aachen UniversityAachenGermany Fakultat Physik Technische Universitat DortmundDortmundGermany max-Planck-Institut für Kernphysik(mPIK) HeidelbergGermany Physikalisches Institut Ruprecht-Karls-Universitat HeidelbergHeidelbergGermany School of Physics University College DublinDublinIreland INFN Sezione di Bari BariItaly INFN Sezione di Bologna BolognaItaly INFN Sezione di Ferrara FerraraItaly INFN Sezione di Firenze FirenzeItaly INFN Laboratori Nazionali di Frascati FrascatiItaly INFN Sezione di Genova GenovaItaly INFN Sezione di milano MilanoItaly INFN Sezione di milano-Bicocca MilanoItaly INFN Sezione di Cagliari MonserratoItaly Universitàdegli Studi di Padova Universitàe INFNPadovaPadovaItaly INFN Sezione di Pisa PisaItaly INFN Sezione di r.ma La Sapienza RomaItaly INFN Sezione di r.ma Tor Vergata RomaItaly Nikhef National Institute for Subatomic Physics AmsterdamNetherlands Nikhef National Institute for Subatomic Physics and VU University Amsterdam AmsterdamNetherlands AGH-University of Science and Technology Faculty of Physics and Applied Computer Scienc

A search for the rare decays W^(+)→D_(s)^(+)γ and Z→D0γis performed using proton-proton collision data collected by the LHCb exper.ment at a centre-of-mass energy of 13TeV,corresponding to an integrated luminosity of 2.0fb−*** significant signal is observed for either decay mode and upper limits on their branching fractions are set using W^(+)→D_(s)^(+)γ and Z→μ+μ−decays as normalization *** upper limits are 6.5×10^(−4) and 2.1×10^(−3) at 95% confidence level for the W^(+)→D_(s)^(+)γ and Z→D^(0)γ decay modes,*** is the first reported search for the Z→D^(0)γ decay,while the upper limit on the W+→D+sγbranching fraction improves upon the previous best limit.

关键词： W/Z boson rare decay upper limit of branching fraction

Effects of Seasonal and Perennial Grazing on Soil Fauna Community and microbial Biomass Carbon in the Subalpine meadows of Yunnan, Southwest China

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

Pedosphere 2017年第2期27卷 371-379页

作者： LIU Shengjie YANG Xiaodong Anthony r. IVES FENG Zhili SHA Liqing Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical Garden Chinese Academy of Sciences Mengla 666303 (China) University of Chinese Academy of Sciences Beijing 100049 (China) Depar.ment of Zoology University of Wisconsin-Madison Madison WI 53706 (USA)

Grazing and over-grazing may drive changes in the diversity and functioning of below-ground meadow ecosystems. A field soil survey was conducted to compare microbial biomass carbon （Cmin） and soil fauna communities in the two main grassland management systems in subalpine regions of Yunnan Province, China： perennial grazing currently practiced due to increasing herd sizes and traditional seasonal grazing. A three-year exclosure exper.ment was then conducted to further compare the effects of different grazing practices, including treatments of no mowing, perennial grazing （Nm ＋ G）, mowing followed by seasonal grazing （m ＋ G）, mowing and no grazing （m ＋ NG）, and no mowing or grazing （Nm ＋ NG）. The comparative survey result revealed that Cmin and total density of soil fauna were significantly lower at a perennially grazed site than at a seasonally grazed site. The exper.ment results showed that in comparison to non-grazing treatments （m ＋ NG and Nm ＋ NG）, grazing （Nm ＋ G and m ＋ G） reduced total fauna density （by 150 individuals m-2） and the number of taxonomic groups present （by 0.32 taxa m-2）. mowing decreased Cmin （by 0.31 mg g-l）. Furthermore, the Nm ＋ G treatment （perennial grazing） had the lowest density of Collembola （16.24 individuals m-2）, one of the two most common taxonomic groups, although other taxonomic groups responded differently to the treatments. Treatment effects on soil fauna were consistent with those on above-ground grasses, in which C：N ratios were greatly reduced by grazing, with this effect being the greatest for the Nm ＋ G treatment. In contrast, different grazing treatments had little effect on C：N ratio of soil. Furthermore, the traditional grazing method （mowing followed by seasonal grazing） may have less severe effects on some taxonomic groups than perennial grazing. Therefore, an appropriate management should aim to protect soil fauna and microbes in this area fr.m over-grazing and against further degradation.

关键词： grass nutrient meadow ecosystems mowing plant and animal communities soil microbes over-grazing

在线全文

学校读者我要写书评

暂无评论

FOrEWOrD

FOREWORD