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声音对鹌鹑性腺发育和血浆Lh的影响

西北农林科技大学学报(自然科学版) 1987年第1期 11-18页

作者：李震钟 w.h.burke 西北农业大学畜牧系美国乔治亚大学家禽系

先后做了两个试验,研究在每日光照6小时的环境中,声音对于1—12周龄(试验1)或1—14周龄(试验2)日本鹌鹑性腺发育的影响。试验分三组:第一组每天给予12小时的收音机广播声;第二组每天播放12小时成年鹌鹑鸣叫声;第三组为对照,不播放任何... 详细信息

先后做了两个试验,研究在每日光照6小时的环境中,声音对于1—12周龄(试验1)或1—14周龄(试验2)日本鹌鹑性腺发育的影响。试验分三组:第一组每天给予12小时的收音机广播声;第二组每天播放12小时成年鹌鹑鸣叫声;第三组为对照,不播放任何声音。结果表明,一、二组雄鹌鹑的睾丸发育显然比第三组快,第一组尤甚;第三组盘8—10周龄时睾丸有所增大,后来又萎缩了。卵巢的发育,第一组有极显著的优势。

关键词：鹌鹑睾丸卵巢声音光照试验

高温环境中外源雌二醇对鸡的产蛋量、蛋重、蛋壳强度和血钙水平的影响

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畜牧与兽医 1986年第5期 193-195页

作者：李震钟 w.h.burke M.G.hulsey A. Athens Dapartment of Poultry Sci.Univ.of Georgia Georgia 30602 西北农业大学畜牧系

接近或高于皮肤温度的气温,常使鸡食欲减退,体重变轻,产蛋量下降,蛋壳薄而脆弱,血钙水平降低,因而被视为“高温”。据文献报道,血液雌二醇一17β对血钙水平有重要影响。那末,高温情况下鸡的血液雌二醇水平怎样?利用外源雌二醇能否缓解... 详细信息

接近或高于皮肤温度的气温,常使鸡食欲减退,体重变轻,产蛋量下降,蛋壳薄而脆弱,血钙水平降低,因而被视为“高温”。据文献报道,血液雌二醇一17β对血钙水平有重要影响。那末,高温情况下鸡的血液雌二醇水平怎样?利用外源雌二醇能否缓解高温对鸡的不良影响?过去未见报道。本试验的目的,就是了解鸡在高温环境中对外源雌二醇的反应。

关键词：蛋壳强度抗压力蛋重产蛋量雌二醇雌激素产蛋率血钙水平试验鸡高温环境热环境

环境温度对产蛋母鸡采食量、体重、产蛋率、蛋重、蛋壳强度、血钙含量及雌二醇水平的影响

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畜牧与兽医 1986年第3期 97-98页

作者：李震钟 w.h.burke M.G.hulsey 西北农业大学畜牧系 Department of poultry Science University of Georgia Athens Georga 30602 U.S.A

美国每年因鸡蛋壳质量不佳而破损,造成的经济损失达一亿美元以上。并且这种破损,比较集中地发生在夏季。为了了解环境温度对产蛋鸡的影响,并着重了解蛋壳强度的变化及其与血钙、雌二醇水平的相关性,而进行了试验。

关键词：蛋壳强度相关系数抗压力产蛋率血钙平均蛋重环境温度雌二醇雌激素

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石油生成模式研究的图解法

宝石和宝石学杂志(中英文) 1986年第2期 93-97页

作者： w.h.burke D.U.Von Rosenberg 马立祥

有各种数学模型可用于模拟于酪根生成石油的天然过程。其中一种数学模型模拟了由几个独立、平行的一级反应共同作用的石油生成过程。作者利用阿伦尼乌斯方程式,绘制了Tissot和Espitalie（1975）的Ⅱ型干酪根（经历了天然成熟作用和实验... 详细信息

有各种数学模型可用于模拟于酪根生成石油的天然过程。其中一种数学模型模拟了由几个独立、平行的一级反应共同作用的石油生成过程。作者利用阿伦尼乌斯方程式,绘制了Tissot和Espitalie（1975）的Ⅱ型干酪根（经历了天然成熟作用和实验室的热解）的反应图,作为利用这种数学模型来研究石油天然成熟过程的一个实例。为了进行比较,文中列出了这些反应的数值计算结果。绘制在log10A—E图上的每个点表示一个反应。这些反应随温度的增加而出现的次序由图上的旋转线表示。研究者可根据图上的极大值作出许多推断,并能迅速观察到由于改变模型的假设条件而产生的许多影响。

关键词：反应活化能速度系数激活能热力学函数阿伦尼乌斯方程干酪根石油矿物燃料图解法数值分析

Comparison of methods for deriving phenotypes from incomplete observation data with an application to age at puberty in dairy cattle

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Journal of Animal Science and Biotechnology 2024年第2期15卷 535-545页

作者： Melissa A.Stephen Chris R.burke Jennie E.Pryce Nicole M.Steele Peter R.Amer Susanne Meier Claire V.C.Phyn Dorian J.Garrick DairyNZ Ltd 605 Ruakura RoadHamilton 3240New Zealand AL Rae Centre for Genetics and Breeding-Massey University RuakuraHamilton 3214New Zealand Agriculture Victoria Research AgriBioCentre for AgriBioscienceBundooraVictoria 3083Australia School of Applied Systems Biology La Trobe UniversityBundooraVictoria 3083Australia AbacusBio DunedinNew Zealand

Background Many phenotypes in animal breeding are derived from incomplete measures,especially if they are challenging or expensive to measure *** include time-dependent traits such as reproductive status,or *** measures for these traits result in phenotypes that are subject to left-,interval-and rightcensoring,where phenotypes are only known to fall below an upper bound,between a lower and upper bound,or above a lower bound *** we compare three methods for deriving phenotypes from incomplete data using age at first elevation(>1 ng/mL)in blood plasma progesterone(AGEP4),which generally coincides with onset of puberty,as an example *** we produced AGEP4 phenotypes from three blood samples collected at about 30-day intervals from approximately 5,000 holstein–Friesian or holstein–Friesian×Jersey cross-bred dairy heifers managed in 54 seasonal-calving,pasture-based herds in New *** used these actual data to simulate 7 different visit scenarios,increasing the extent of censoring by disregarding data from one or two of the three *** methods for deriving phenotypes from these data were explored:1)ordinal categorical variables which were analysed using categorical threshold analysis;2)continuous variables,with a penalty of 31 d assigned to right-censored phenotypes;and 3)continuous variables,sampled from within a lower and upper bound using a data augmentation *** Credibility intervals for heritability estimations overlapped across all methods and visit scenarios,but estimated heritabilities tended to be higher when left censoring was *** sires with at least 5 daughters,the correlations between estimated breeding values(EBVs)from our three-visit scenario and each reduced data scenario varied by method,ranging from 0.65 to *** estimated breed effects also varied by method,but breed differences were smaller as phenotype censoring *** Our results indicate that using

关键词： Cattle Gibbs sampler Markov-chain Monte Carlo(MCMC) Puberty

DFT investigation of half-metallic ferromagnetic rare earth based spinels Mgho_(2)Z_(4)(Z=S,Se)

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Journal of Rare Earths 2024年第1期42卷 121-128,I0005页

作者： Maiza Zanib Mumtaz Manzoor N.A.Noor M.waqas Iqbal Mazia Asghar h.h.hegazy A.Laref Department of Physics Riphah International UniversityLahore CampusPakistan Research Centre for Advanced Materials Science King Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Department of Physics Faculty of ScienceKing Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Department of Physics and Astronomy College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

half-metallic ferromagnetism,mechanical as well as thermoelectric properties for rare earth-based spinels Mgho_(2)Z_(4)(Z=S,Se)were investigated using density functional theory(DFT).Structural optimization was done with Perdew-burke-Ehrenzorf(PBE)sol-generalized gradient approximation(GGA)to calculate the lattice constant of both spinels comparable to experimental *** addition,Born stability criteria and negative formation energy show that our studied spinels are also structurally and dynamically stable in the cubic *** ferromagnetic(FM)state stability,we also calculated the energy differences among FM,antiferromagnetic(AFM),and non-magnetic(NM)***,Curie temperatures of ferromagnetic phases were also *** used Trans-Blaha improved BeckeJohnson(TB-mBJ)potential functional for electronics as well as magnetic characteristics,which lead to the consistent explanation of half-metallic ferromagnetism,representing the whole band-occupancy in material with exact detail of density of states(DOS).The stable FM state was examined in spinels due to the exchange splitting of ho cation consisting of p-d hybridizations compatible with the result achieved for electronics band structure and ***,spin magnetic moment was explained in terms of anion,cation,and sharing charge on studied *** addition,the calculated thermoelectric properties clearly show that operation range of these systems may be utilized by future experimental works for identifying the potential applications of these systems.

关键词： ho-based spinels DFT simulations Mechanical parameters Electronic properties hM ferromagnetism Figure of merit

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全球担保品管理行业发展趋势分析

债券 2024年第1期 68-69页

作者：布傲迪(O’Delle burke) 摩根大通

面对全球经济的不稳定性、复杂性,担保品作为理想的风险和流动性管理工具,吸引了越来越多市场投资者的关注,监管机构的重视程度不断提高,担保品管理机制的重要性逐步提升。市场随之对担保品管理的流转效率、精细化程度提出了更高层次的... 详细信息

面对全球经济的不稳定性、复杂性,担保品作为理想的风险和流动性管理工具,吸引了越来越多市场投资者的关注,监管机构的重视程度不断提高,担保品管理机制的重要性逐步提升。市场随之对担保品管理的流转效率、精细化程度提出了更高层次的要求,不断促进担保品选取分配算法的优化升级,金融科技在担保品领域的应用不断拓展,担保资产配置效率提升。尽管如此,新形势下全球市场仍然面临着优质担保品短缺的难题,人民币债券作为稳健、优质的资产,能够成为国际担保品池的有效补充。

关键词：担保品行业发展趋势人民币债券流动性管理流转效率资产配置效率监管机构管理机制

Battery prognostics and health management for electric vehicles under industry 4.0

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能源化学:英文版 2023年第9期84卷 30-33页

作者： Jingyuan Zhao Andrew F.burke Institute of Transportation Studies University of California DavisDavisCA 95616USA

Transportation electrification is essential for decarbonizing transport. Currently, lithium-ion batteries are the primary power source for electric vehicles (EVs). however, there is still a significant journey ahead before EVs can establish themselves as the dominant force in the global automotive market. Concerns such as range anxiety, battery aging, and safety issues remain significant challenges.

关键词： Lithium-ion battery Prognostics and health management Machine learning Cloud Artificial intelligence Digital twins Lifelong learning

Overview of Sudden Cardiac Deaths

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Journal of Forensic Science and Medicine 2022年第4期8卷 157-169页

作者： Allen burke Department of Pathology School of MedicineUniversity of MarylandBaltimoreMDUSA

Sudden cardiac death(SCD)is an unexpected cardiac death that is instantaneous or occurs within a short period of time after onset of symptoms,in a person in a stable state of *** has either a certain etiology(for example,cardiac tamponade or fresh occlusive coronary thrombus),or has one or more morphologic substrates that increase the risk of electrical instability that in turn can lead to a fatal *** latter group of SCD has been assigned as either highly probable or uncertain etiologies,according to guidelines of the Association of European Cardiovascular *** review describes definitive causes and potential underlying substrates for SCD.

关键词： Sudden cardiac death pathology cardiomegaly