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向镰刀菌毒素污染的谷物添加葡甘露聚糖对初产母猪生产性能和血液生化指标的影响

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国外畜牧学（猪与禽） 2008年第3期28卷 32-35页

作者：付学锋朱连勤朱风华章晓冬 G Diaz-Llano t k smith

研究表明,镰刀菌毒素会导致泌乳母猪的采食量和日增重下降,具有延长母猪从断奶至发情间隔时间的倾向;葡甘露聚糖能够防止由镰刀菌毒素毒性作用引起的血清尿素和总蛋白浓度的下降。

关键词：镰刀菌毒素葡甘露聚糖初产母猪血液生化指标生产性能毒素污染谷物泌乳母猪

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饲喂大蒜剂对产蛋鸡胆固醇代谢的影响

饲喂大蒜剂对产蛋鸡胆固醇代谢的影响

Polyethylene glycol has immunoprotective effects on sciatic allografts, but behavioral recovery and graft tolerance require neurorrhaphy and axonal fusion

2008山东饲料科学技术交流大会

作者： S.R.Chowdhury S.D.Chowdhury t.k.smith 张青青山东农业大学动物科技学院

本试验旨在评估在不同品种蛋鸡日粮中添加大蒜剂对蛋黄中胆固醇浓度和总体生产性能影响的潜力。试验选用海蓝褐、伊莎褐、罗曼、星杂、巴布谷、星杂-579共六个品种的28日龄蛋鸡36只,每个品种六只,日粮中分别添加0（对照组）、2、4、6、8... 详细信息

本试验旨在评估在不同品种蛋鸡日粮中添加大蒜剂对蛋黄中胆固醇浓度和总体生产性能影响的潜力。试验选用海蓝褐、伊莎褐、罗曼、星杂、巴布谷、星杂-579共六个品种的28日龄蛋鸡36只,每个品种六只,日粮中分别添加0（对照组）、2、4、6、8、10%的晒干的大蒜剂,饲喂6周。试验期为六周,试验期间各日粮和品种的产蛋鸡的平均蛋重、总蛋重、采食量、饲料转化率、日增重都无明显差异（P＞0.05）。但添加大蒜组蛋黄重增加,不同品种增加幅度不同（P＜0.05）。与其他品种相比,巴布谷品种的产蛋量和蛋黄重都有显著提高。随日粮中大蒜的添加水平的增加血清和蛋黄中胆固醇含量成线性递减（P＜0.05）。不同的品种的血清和蛋黄中胆固醇浓度也不同（P＜0.05）。研究结果表明:产蛋鸡日粮中添加大蒜剂可减少血清和蛋黄中胆固醇的含量,但对产蛋量无显著影响。

关键词：晒制大蒜剂胆固醇蛋黄血清蛋鸡品种

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Neural Regeneration Research 2025年第4期20卷 1192-1206页

作者： tyler A.smith Liwen Zhou Cameron L.Ghergherehchi Michelle Mikesh Cathy Z.Yang Haley O.tucker JuliAnne Allgood Jared S.Bushman George D.Bittner Department of Molecular Biosciences University of Texas at AustinAustinTXUSA Department of Neuroscience University of Texas at AustinAustinTXUSA Division of Pharmaceutical Sciences University of WyomingLaramieWYUSA

Behavioral recovery using(viable)peripheral nerve allografts to repair ablation-type(segmental-loss)peripheral nerve injuries is delayed or poor due to slow and inaccurate axonal ***,such peripheral nerve allografts undergo immunological rejection by the host immune *** contrast,peripheral nerve injuries repaired by polyethylene glycol fusion of peripheral nerve allografts exhibit excellent behavioral recovery within weeks,reduced immune responses,and many axons do not undergo Wallerian *** relative contribution of neurorrhaphy and polyethylene glycol-fusion of axons versus the effects of polyethylene glycol per se was unknown prior to this *** hypothesized that polyethylene glycol might have some immune-protective effects,but polyethylene glycol-fusion was necessary to prevent Wallerian degeneration and functional/behavioral *** examined how polyethylene glycol solutions per se affect functional and behavioral recovery and peripheral nerve allograft morphological and immunological responses in the absence of polyethylene glycol-induced axonal ***-type sciatic nerve injuries in outbred Sprague–Dawley rats were repaired according to a modified protocol using the same solutions as polyethylene glycol-fused peripheral nerve allografts,but peripheral nerve allografts were loose-sutured(loose-sutured polyethylene glycol)with an intentional gap of 1–2 mm to prevent fusion by polyethylene glycol of peripheral nerve allograft axons with host *** to negative control peripheral nerve allografts not treated by polyethylene glycol and in contrast to polyethylene glycol-fused peripheral nerve allografts,animals with loose-sutured polyethylene glycol peripheral nerve allografts exhibited Wallerian degeneration for all axons and myelin degeneration by 7 days postoperatively and did not recover sciatic-mediated behavioral functions by 42 days *** morphological signs of rejection,such as col

关键词： allograft rejection axotomy macrophage myelin nerve repair polyethylene glycol(PEG) sciatic nerve t cell transplantation Wallerian degeneration

Impact of tillage and Fertilizer Application Method on Gas Emissions in a Corn Cropping System

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Pedosphere 2012年第5期22卷 604-615页

作者： k. smith D. WAttS t. WAY H. tORBERt S. PRIOR Department of Math Science and Technology University of Minnesota Crookston Crookston MN 56716 (USA) USDA-ARS National Soil Dynamics Laboratory 411 S. Donahue Dr. Auburn AL 36832 (USA)

tillage and fertilization practices used in row crop production are thought to alter greenhouse gas emissions from soil. this study was conducted to determine the impact of fertilizer sources, land management practices, and fertilizer placement methods on greenhouse gas （CO2, CH4, and N2O） emissions. A new prototype implement developed for applying poultry litter in subsurface bands in the soil was used in this study. the field site was located at the Sand Mountain Research and Extension Center in the Appalachian Plateau region of northeast Alabama, USA, on a Hartsells fine sandy loam （fine-loamy, siliceous, subactive, thermic typic Hapludults）. Measurements of carbon dioxide （CO2）, methane （CH4）, and nitrous oxide （N20） emissions followed GRACEnet （greenhouse gas reduction through agricultural carbon enhancement network） protocols to assess the effects of different tillage （conventional vs. no-tillage） and fertilizer placement （subsurface banding vs. surface application） practices in a corn （Zea mays L.） cropping system. Fertilizer sources were urea-ammonium nitrate （UAN）, ammonium nitrate （AN） and poultry litter （M） applied at a rate of 170 kg ha^（-1） of available N. Banding of fertilizer resulted in the greatest concentration of gaseous loss （CO2 and N2O） compared to surface applications of fertilizer. Fertilizer banding increased CO2 and N2O loss on various sampling days throughout the season with poultry litter banding emitting more gas than UAN banding. Conventional tillage practices also resulted in a higher concentration of CO2 and N2O loss when evaluating tillage by sampling day. throughout the course of this study, CH4 flux was not affected by tillage, fertilizer source, or fertilizer placement method. these results suggest that poultry litter use and banding practices have the potential to increase greenhouse gas emissions.

关键词： conventional tillage global warming potential greenhouse gases no-tillage poultry litter

Minimal conceptual models for tropical cyclone intensification

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tropical Cyclone Research and Review 2022年第2期11卷 61-75页

作者： Michael t.Montgomery Roger k.smith Department of Meteorology Naval Postgraduate SchoolMontereyCAUSA Meteorological Institute Ludwig-Maximilians UniversityMunichGermany

We examine a hierarchy of minimal conceptual models for tropical cyclone *** models are framed mostly in terms of axisymmetric balance *** the first set of models,the heating rate is prescribed in such a way to mimic a deep overturning circulation with convergence in the lower troposphere and divergence in the upper troposphere,characteristic of a region of deep moist *** the second set,the heating rate is related explicitly to the latent heat release of ascending air *** release of latent heat markedly reduces the local static stability of ascending air,raising two possibilities in the balance *** first possibility is that the effective static stability and the related discriminant in the Eliassen equation for the overturning circulation in saturated air,although small,remains positive so the Eliassen equation is globally *** second possibility,the more likely one during vortex intensification,is that the effective static stability in saturated air is negative and the Eliassen equation becomes locally *** models help to understand the differences between the early Ooyama models of 1968 and 1969,the Emanuel,1989 model,and the later Emanuel models of 1995,1997 and *** provide insight also into the popular explanation of the WISHE feedback mechanism for tropical cyclone *** implications for recent work are discussed.

关键词： tropical cyclone intensification Conventional spin-up mechanism Minimal models Nonlinear boundary layer spin-up mechanism WISHE feedback Mechanism

tEStS ON StRUCtURALLY DEFICIENt RC SLABS StRENGtHENED WItH FIBRE REINFORCED POLYMER (FRP) COMPOSItES

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工业建筑 2004年第Z1期34卷 -页

作者： S.t. smith Centre for Built Infrastructure Research Faculty of Engineering University of technology Sydney PO Box 123 Broadway NSW 2007 Australia

［1］Arduini, M., Nanni, A. and Romagnolo, M. (2004) "Performance of one-way reinforced concrete slabs with externally bonded fiber-reinforced polymer strengthening", ACI Structural Journal, Vol.101, No. 2, pp. 193-201.［2］AS 1012 Methods of testing Concrete, Standards Australia, Sydney, Australia.［3］AS1391 (1991)Methods for tensile testing of Metals, Standards Australia, Sydney, Australia.［4］AS3600 (2001) Concrete Structures, Standards Australia, Sydney, Australia.［5］AS/NZS4671 (2001) Steel Reinforcing Materials, Standards Australia, Sydney, Australia.［6］Lam, L. and teng, J.G. (2001) “Strength of RC cantilever slabs bonded with GFRP strips”,Journal of Composites for Construction, ASCE, Vol. 5, No. 4, pp. 221-227.［7］Seim, W., Horman, M. karbhari, V. and Seible, F. (2001) “External FRP poststrengthening of scaled concrete slabs”, Journal of Composites for Construction, ASCE, Vol. 5, No. 2, pp. 67-75.［8］smith, S.t. and Gilbert, R.I. (2003) “tests on RC slabs reinforced with 500 MPa welded wire fabric”, Proceedings (CD-ROM), Concrete in the 3rd Millennium, CIA 2003, 21st Biennial Conference, Concrete Institute of Australia (CIA), Brisbane, Australia, 17-19 July.［9］teng, J.G., Lam, L, Chan, W. and Wang, J. (2000) “Retrofitting of deficient RC cantilever slabs using GFRP strips”, Journal of Composites for Construction, ASCE, Vol. 4, No. 2, pp. 75-84.［10］teng, J.G., Chen, J.F., smith, S.t. and Lam, L. (2002) FRP-Strengthened RC Structures, John Wiley & Sons, Chichester, West Sussex, U.k., 245 pp.［11］teng, J.G., smith, S.t., Yao, J. and Chen, J.F. (2003) “Intermediate crack induced debonding in RC beams and slabs”, Construction and Building Materials, Vol. 17, No. 6-7, pp.

关键词： steel reinforcement reinforced concrete reinforced polymer

Geometry of screw compressor rotors and their tools

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第4期12卷 310-326页

作者： Nikola StOSIC Ian k.smith Ahmed kOVACEVIC Elvedin MUJIC Centre for Positive Displacement Compressors City University London

this paper presents a method of general geometrical definitions of screw machine rotors and their manufacturing *** describes the details of lobe shape specification,and focuses on a new lobe profile,which yields a larger cross-sectional area and shorter sealing lines resulting in higher delivery rates for the same tip speed.A well proven mathematical model was used to determine the optimum profile,compressor housing size,and compressor ports to achieve the superior compressors.

关键词： Geometry of screw compressors Rotor lobe profile Cutting tools

AN EFFECtIVE MULtIPLE CRItERIA APPROACH tO INFRAStRUCtURE RECONStRUCtION IN DEVAStAtED COUNtRIES

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Journal of Systems Science and Systems Engineering 2006年第2期15卷 232-246页

作者： k.A.NIGIM k.W.HIPEL G.B.smith Department of Electrical and Computer Engineering University of WaterlooWaterlooOntario Canada. Department of Systems Design Engineering University of WaterlooWaterlooOntario Canada International Business Development MesaArizonaUSA

Infrastructure facilities in many countries have been repeatedly subjected to natural or human-induced disasters. International aid institutions, such as the United Nations Development Program （UNDP）, United States Aid International Development （USAID）, Japan International Cooperation Agency （JICA） and the World Bank International Aid Development （IDA）, are endeavoring to assist in the reconstruction of devastated countries. Development institutions normally face the problem of selecting and implementing relevant priority infrastructure projects that are needed in various sectors. Usually there are also several key local players in the decision making process. In many cases, these main decision makers have contradictory objectives that lead to conflict and thereby hamper the reconstruction process. In response to this kind of problem, an effective approach has been developed within the field of Multiple Criteria Decision Analysis （MCDA）, the Analytical Hierarchy Process （AHP）, that can assist decision makers in prioritizing projects to meet specified goals and objectives. Using the AHP approach, the problem of selecting infrastructure projects is dealt with systematically when applying this flexible MCDA technique. this approach takes into account possible uncertainties and social discrepancies, and can use the judgments of the decision makers themselves when there is a lack of technical or historical data. Decision makers from international financial aid institutions, donor agencies, governmental and the local community can utilize this proposed approach.

关键词： Analytical Hierarchy Process (AHP) conflicts infrastructure reconstruction multi-criteriadecision analysis (MCDA)

the Isentropic Exponent of Single-Ionized Mono-Atomic Plasmas

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Plasma Science and technology 2012年第8期14卷 699-701页

作者： k.t.A.L.BURM PlasmAIX for Plasma Research Heimerik 472440 GeelBelgium

the isentropic exponent of single-ionized mono-atomic plasmas in thermal equilib- rium is studied. Its behavior as a function of the ionization degree and temperature is examined for argon and zinc plasmas at two pressures （1 bar and 1 mbar, 1 mPa and 1 Pa）, respectively. the results show that for the two sorts of plasma the isentropic exponent equals typically about 1.1-1.2 within a considerably wide range of the ionization degree （5%-80%）.

关键词： plasma modelling isentropic exponent