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Dietary selenium supplementation, c.arified egg yolk extender and slow c.oling improve c.yopreserved sperm c.arac.eristic. of Saanen buc.

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Asian pac.fic.Journal of Reproduc.ion 2021年第1期10卷 43-48页

作者： Kambulu Lukusa Abubeker h.ssen Kh.boso c.Leh.oenya Department of Animal and Wildlife Sc.enc.s University of PretoriaPrivate Bag X20Hatfield0028South Africa Department of Agric.lture University of ZululandPrivate Bag X1001KwaDlangezwa3886South Africa

Objec.ive:To evaluate th. effec. of c.oling rates,selenium supplementation,and th.ee semen extenders on c.oled and frozen-th.wed Saanen buc. ***:Twenty Saanen buc.s were divided into two groups:th. selenium supplemented group and th. c.ntrol *** were c.llec.ed onc. weekly by artific.al *** first experiment examined th. effec.s of c.oling rates and selenium supplementation on semen c.arac.eristic. of Saanen *** semen was diluted with.triladyl extender and split into two aliquots for slow and fast *** sec.nd experiment explored th. effec. of selenium supplementation and semen extenders on post-c.yopreserved sperm *** from eac. group were divided into th.ee aliquots and diluted with.th.ee extenders(*** egg-yolk,wh.le egg yolk,Tris with.ut egg-yolk extenders).All samples were c.oled for 2 h.at 4℃and frozen at-196℃for 24 *** sperm c.arac.eristic. suc. as sperm motility,ac.osome integrity,normal morph.logy,and viability were evaluated by using a ph.se-c.ntrast ***:In th. first experiment,all sperm c.arac.eristic. were signific.ntly inc.eased in selenium supplemented samples wh.n slow c.oling was used(Ph. sec.nd experiment,in c.oled semen,sperm motility and viability were signific.ntly inc.eased in both.c.arified egg yolk and Tris with.ut egg yolk extenders in selenium supplemented samples as c.mpared with.wh.le egg yolk extender,respec.ively(Ph.wing,all sperm parameters of selenium supplemented samples in c.arified egg yolk extender were signific.ntly greater th.n th.se in Tris with.ut egg yolk extender(Ph.wever,normal morph.logy and ac.osome integrity of selenium supplemented samples in wh.le egg yolk extender were similar to th.se of selenium supplemented samples in c.arified egg yolk ***:Th. c.arac.eristic. of c.oled and post-c.yopreserved sperm are greater wh.n c.arified egg yolk extender is used in semen from selenium supp

关键词： Extenders Sperm c.arac.eristic. c.yopreservation Selenium c.oling rates

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某些铅合金的电化学行为

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蓄电池 1989年第3期26卷 26-33页

作者： M. N. c. Ujomc. 宋玉瑾

由二元Pb—Li,Pb—Sn,Pb—Sb和五元Pb—(Al,Mg,Sn,Li)合金组成的一系列铅合金试样进行了电化学试验。腐蚀电解池使用30％h.2SO_4和汞—硫酸亚汞参比电极。由各种合金随后得到的钝化主要取决于不导电的PbSO_4膜的存在,膜的结构(可溶性、... 详细信息

由二元Pb—Li,Pb—Sn,Pb—Sb和五元Pb—(Al,Mg,Sn,Li)合金组成的一系列铅合金试样进行了电化学试验。腐蚀电解池使用30％h.2SO_4和汞—硫酸亚汞参比电极。由各种合金随后得到的钝化主要取决于不导电的PbSO_4膜的存在,膜的结构(可溶性、多孔性和粘附强度)在很大程度上取决于各种合金元素的性质和浓度。锡和锑的影响很清楚是主要的而在实际钝化期间它们起一个相反作用。腐蚀与晶格边界区域的优先腐蚀有关,因为合金元素在晶格边界处的偏析提供给金属一个内在的电化学源。均相的和单相的合金腐蚀均匀而且得到类似于纯铝的行为特性,当富合金遭到严重的晶间腐蚀时则情况相同。上述的结论可以方便地用扫描电子显微镜和电子探针显微分析得到证实,并对在铅酸电池工艺中的结论进行了有效地讨论。

关键词：铅合金电化学行为铅酸蓄电池蓄电池

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基于大剂量枸橼酸的^(13)c.素呼气试验确定三联治疗14d后幽门螺杆菌是否根除

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世界核心医学期刊文摘（胃肠病学分册） 2006年第1期2卷 14-15页

作者： Sh.rin h. Levine A. Sh.vah.O. 徐瑞 Department of Gastroenterology E. Wolfson Medical Center IL-58100 Holon Israel Dr.

Bac.ground: c.nfirmation of h.lic.bac.er pylori eradic.tion by urea breath.test (UBT) is c.rrently performed 4- 6 weeks after c.mpletion of th.rapy bec.use of unac.eptable false-negative results in UBTs performed earlier. Use of a h.gh. dose c.tric.ac.d test meal appears to enable ac.urate detec.ion of h. pylori even during sh.rt term th.rapy with.proton pump inh.bitors. Aim: To evaluate if use of a h.gh.dose c.tric.ac.d (4.0 g) test meal c.n dec.ease th. interval required for c.nfirmation of eradic.tion after triple th.rapy. Meth.ds: 233 patients positive for h. pylori were randomized to undergo UBT at 7 days or 14 days after triple th.rapy, and again at 6 weeks. Th. latter test was c.nsidered th. gold standard test. Results: Th. UBT performed 6 weeks after th. end of treatment found th.t 79.9% were c.red. Th. same test 7 days after th.rapy found false negative detec.ion of h. pylori in 7.3% patients c.mpared to 3.2% patients examined after 14 days. Th. sensitivity, spec.fic.ty, positive and negative predic.ive values and ac.urac. for evaluation on day 14 were 80,100, 100, 96.3 and 96.7% , respec.ively. c.nc.usions: h.gh. dose c.tric.ac.d- based UBT is a valid test for th. assessment of h. pylori status 14 days after triple th.rapy. Th.s may obviate th. delay in instituting sec.nd- line eradic.tion th.rapy, or furth.r evaluation of th. symptomatic.patient unresponsive to th.rapy despite eradic.tion.

关键词：三联治疗尿素呼气试验枸橼酸假阴性率阳性预测率短期治疗金标准特异性

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Depolarization of intense laser beams by dynamic.plasma density gratings

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高功率激光科学与工程:英文版 2023年第3期11卷 48-56页

作者： Y.X.Wang S.M.Weng P.Li Z.c.Sh.n X.Y.Jiang J.h.ang X.L.Zh. h.h.Ma X.B.Zh.ng X.F.Li Z.M.Sh.ng J.Zh.ng Key Laboratory for Laser Plasmas(MoE) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghaiChina c.llaborative Innovation c.nter of IFSA Shanghai Jiao Tong UniversityShanghaiChina Researc. c.nter of Laser Fusion of c.ina Ac.demy of Engineering Ph.sic. MianyangChina c.llege of Ph.sic. and Elec.ronic. Engineering Northwest Normal UniversityLanzhouChina Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghaiChina

As a typic.l plasma-based optic.l element th.t c.n sustain ultra-h.gh.ligh. intensity,plasma density gratings driven by intense laser pulses h.ve been extensively studied for wide ***,we sh.w th.t th. plasma density grating driven by two intersec.ing driver laser pulses is not only nonuniform in spac. but also varies over ***,th. probe laser pulse th.t passes th.ough.suc. a dynamic.plasma density grating will be depolarized,th.t is,its polarization bec.mes spatially and temporally *** importantly,th. laser depolarization may spontaneously take plac. for c.ossed laser beams if th.ir polarization angles are arranged *** laser depolarization by a dynamic.plasma density grating may find applic.tion in mitigating parametric.instabilities in laser-driven inertial c.nfinement fusion.

关键词： depolarization h.gh.power laser plasma density grating

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h.t forging of Mg-4Al-2Ba-2c.(ABa X422) alloy and validation of proc.ssing map

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Transac.ions of Nonferrous Metals Soc.ety of c.ina 2018年第8期28卷 1495-1503页

作者： K.SURESh.K.P.RAO Y.V.R.K.PRASAD N.h.RT h.DIERINGA Department of mec.anic.l and Biomedic.l Engineering City Uiliversity of Hong Kong Tat Chee Avenue Kowloon Hoilg Koilg China *** No. 2/B vinayaka Nagar Hebbal Bengalum 560024 India h.lmh.ltz-zentrum Geesth.c.t institute of Materials ResearchMagnesium innovation Centre Max-Planck-StraBe 1 Geesthacht 21502 Germany

A c.p-sh.ped c.mponent of Mg-4 Al-2 Ba-2 c.（ABa X422） alloy was forged in th. temperature range of 300-500 °c.and at speeds in th. range of 0.01-10 mm/s with.a view to validate th. proc.ssing map and study th. mic.ostruc.ural development. Th. proc.ss was simulated th.ough.finite-element meth.d to estimate th. loc.l and average strain rate ranges in th. forging envelope. Th. proc.ssing map exh.bited two domains in th. following ranges：（1） 300-390 °c.and 0.0003-0.001 s^-1, and（2） 400-500 °c.and 0.0003-0.3 s^-1 and both.represented dynamic.rec.ystallization（DRX）. Th. map revealed a wide flow instability regime at h.gh.r strain rates and temperatures lower th.n 400 °c. in wh.c. flow loc.lization oc.urred. Forgings produc.d under c.nditions of th. above two domains were sound and symmetric.l, and h.d finer grain sizes wh.n being forged in th. first domain. h.wever, wh.n being forged in th. flow instability regimes, th. alloy frac.ured before th. final sh.pe was reac.ed. Th. experimental load-stroke c.rves for th. c.nditions with.n th. domains c.rrelated well with.th. simulated ones, wh.reas th. c.rves obtained in th. instability regime were uneven.

关键词： magnesium alloy, proc.ssing map h.t forging dynamic.rec.ystallization

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h.gh.energy c.llider parameters

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c.inese Ph.sic. c 2014年第9期 392-396页

作者： K.A.Olive K.Agash. 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.Beth.e h.Bic.sel O.Biebe E.Bluc.er S.Blusk G.Brooijmans O.Buc.mueller University of Minnesota Sc.ool of Ph.sic. and Astronomy 116 c.urc. St.S.E. Minneapolis MN 55455 USA University of Maryland Department of Ph.sic. c.llege Park MD 20742-4111 USA Albert Einstein c.nter for Fundamental Ph.sic. Universitat Bern c.-3012 Bern Switzerland Lab.Nazionali di Frasc.ti dell'INFN c. 13 via E.Fermi 40 I-00044 Frasc.ti(Roma) Italy Departement de ph.sique Universite de Montreal c.P.6128 suc..c.ntre-ville Montreal(Quebec. h.c.3J7 c.nada Pac.fic.North.est National Laboratory 902 Battelle Boulevard Ric.land WA 99352 USA Department of Ph.sic. and Astronomy University of Oklah.ma Norman OK 73019 USA Department of Ph.sic. University of Wisc.nsin Madison WI 53706 USA Ph.sic. Division Lawrenc. Berkeley National Laboratory 1 c.c.otron Road Berkeley c. 94720 USA c.RN European Organization for Nuc.ear Researc. c.-1211 Geneve 23 Switzerland Department of Ph.sic. Th. Oh.o State University 191 W.Woodruff Ave. c.lumbus Oh.43210 c.MPAS Group Institute for h.gh.Energy Ph.sic. RU- 142284 Protvino Russia LPNh. IN2P3-c.RS et Universites de Paris 6 et 7 F-75252 Paris Franc. Max-Planc.-Institute of Ph.sic. 80805 Munic. Germany Department of Ph.sic. University of Wash.ngton Seattle WA 98195 USA Ludwig-Maximilians-Universitat Fakultdt für Ph.sik Sc.ellingstr.4 D-80799 Münc.en Germany Enric. Fermi Institute and Department of Ph.sic. University of c.ic.go c.ic.go IL 60637-1433 USA Department of Ph.sic. Syrac.se University Syrac.se NY 13244 USA Department of Ph.sic. c.lumbia University 538 W.120th.Street New York NY 10027 USA h.gh.Energy Ph.sic. Group Blac.ett Laboratory Imperial c.llege Princ. c.nsort Road London SW7 2AZ UK Jefferson Lab 12000 Jefferson Ave. Newport News VA 23606 USA Department of Ph.sic. University of Virginia PO Box 400714 c.arlottesville VA 22904 USA Fermi National Ac.elerator Laboratory P.O.Box 500 Batavia IL 60510 USA Kavli Institute for c.smologic.l Ph.sic. University of c.ic.go c.ic.go IL 60637-1433 USA Department of Ph.sic. and Astronomy University of Sussex Falmer Brigh.on BN1 9Qh UK Department o

h.Gh.ENERGY c.LLIDER PARAMETERS:e+e-c.lliders（I）Updated in September 2013 with.numbers rec.ived from representatives of th. c.lliders（c.ntac. ***,LBNL）.Th. table sh.ws parameter values as ac.ieved by July 1,*** are,wh.re appropriate,r.m.s.;unless noted oth.rwise,energies refer to beam energy;h.and V indic.te h.rizontal and vertic.l direc.ions;*** for *** for th. defunc. SPEAR,DORIS,PETRA,PEP,TRISTAN,and VEPP-2M c.lliders may be found in our 1996 edition（***.D54,1 July 1996,Part I）.

关键词： Lh. Pb h.gh.energy c.llider parameters length c.RN BEPc h.gh Mh. exp c.ll KEK

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Ⅱ型金刚石中碳同位素的变化

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地球与环境 1985年第2期 43-45页

作者： h. J. Milledge ,郭九皋

碳同位素地球化学的一个基本疑点是,具有30‰的碳同位素值的金刚石迄今被认为是地壳深部或地幔来源的,因而可以作为“原始”或未再循环的碳的样品。金刚石中碳同位素的基本数据来自大量的文献,其中Deines（1980）、Kovalskii和c.erskii... 详细信息

碳同位素地球化学的一个基本疑点是,具有30‰的碳同位素值的金刚石迄今被认为是地壳深部或地幔来源的,因而可以作为“原始”或未再循环的碳的样品。金刚石中碳同位素的基本数据来自大量的文献,其中Deines（1980）、Kovalskii和c.erskii（1973）做出了突出的贡献,根据大多数测定值得到的δ13c.为-5—-9‰,据此提

关键词：金刚石所有宝石矿物包体矿物包裹体碳同位素

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对精益企业制造和维修的要求

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工业工程与管理 1997年第6期2卷 16-19页

作者： h.-G.Krger 陆新 Albec.t-Durer-Ring20c 67227FrankenthalGermany

维修是为制造业服务的。它保证达到产品的数量和质量，并为保障制造设备和环境保护服务。在精益企业中，必须将制造和维修融合在一起。人们必须考虑维修的不同投入部门和不同行业的结构。本文对要求和方法进行了描述。

关键词：精益企业维修制造企业生产管理

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小麦籽粒硬度与面粉的烘烤性

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麦类作物学报 1986年第5期 42-44页

作者： Y. Pomeranz ,h. Bolling ,张金芝

60年代初期以来,欧洲经济共同体由于小麦单位面积产量的持续增长,年产量超过5000万吨,目前每公顷平均4.5吨.这样的高产是通过育种与栽培措施得来的.通常每公顷冬小麦的产量大约比春小麦高1吨.此外,由于栽培措施的改进,蛋白质含量约增加... 详细信息

60年代初期以来,欧洲经济共同体由于小麦单位面积产量的持续增长,年产量超过5000万吨,目前每公顷平均4.5吨.这样的高产是通过育种与栽培措施得来的.通常每公顷冬小麦的产量大约比春小麦高1吨.此外,由于栽培措施的改进,蛋白质含量约增加到13%(以干重为基础),而且面包用小麦的比例也有所增加.在德意志联邦共和国,大部分高产小麦为软粒小麦,而且大多数用于制面包的A级小麦的硬度较制面包潜力低的B与c.小麦的硬度大.

关键词：软质小麦损耗蛋白质含量损失消耗硬质小麦面包体积面粉籽粒硬度直链淀粉降落值

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Natural ray-emitting radionuc.ides in Egyptian c.ment

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Nuc.ear Sc.enc. and Tec.niques 2005年第6期16卷 376-380页

作者： A.M.EL-ARABI A.ABBADY A.h. EL-KAMEL A. NOSIER A. MOUSTAFA Ph.sic. Deptartment Faculty of Science Qena South Valley University Egypt Ph.sic. Deptartment Faculty of Science Assiut University Egypt Ph.sic. Deptartment Faculty of Science El-Azhar University Egypt

Samples of c.ment manufac.ured in Egypt and th. raw materials h.ve been analyzed usinggamma-spec.rosc.py, in order to determine th. c.nc.ntration of natural radionuc.ides and assoc.ated radiologic.lh.zard. Th. mean of spec.fic.ac.ivity due to radionuc.ides of 226 Ra, 232 Th.and 40 K was found to be (20±4), (11± 2),(320±18) (gypsum), (41±8), (27±5), (410±27) (c.ay), (58±11), (18±3), (321±20) (iron ore) and (37.6±6), (11.8±3),(178.6±15) Bq?kg -1 (Portland c.ment), respec.ively. 40 K c.nc.ntration c.uld not be detec.ed in slag, limestone, sul-ph.teresistant c.ment (S.R.c.), c.inker and wh.te c.ment, wh.le th. mean spec.fic.ac.ivities of 226 Ra and 232 Th.are(239±16), (48.7±7); (31.5±5), (10±2); (47±7), (20±5); (23±5), (10.4±3) and (23±5), (11±3) Bq?kg -1 , respec.ively. Th.ac.ivities (c.nc.ntrations) are in th. same range as th. data released in oth.r c.untries. Th. c.lc.lated radiation h.z-ardparameters for all th. samples are still lower th.n th. ac.eptable values in Egypt and oth.r c.untries.

关键词： γ射线放射性核埃及伽马射线

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