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| 1 | Microstructure and mechanical properties of AZ91 magnesium alloy with minor additions of Sm, Si and Ca elements显示文摘The effects of Sm, Si and Ca on the microstructure and mechanical property of AZ91 magnesium alloy were investigated by means of optical microscopy (OM), differential scanning calorimetry (DSC), scanning electronic microscopy (SEM), X-ray diffraction (XRD) and tensile testing. The results indicated that the addition of 1.5 wt.% Sm with or without 0.8 Si/Ca led to a decrease in the volume fraction of the β-Mg17Al12 phase and the formation of the intermetallic compounds of Al-Sm, Mg2Si, MgAlCa and Al2Ca. The microstructure of AZ91 alloy was significantly refined and distribution became discrete with additions of Sm and Ca;the average grain size of the α-Mg matrix was reduced from 239.7 ± 16.9 μm to 66.34 ± 5.10 μm. The AZ91-Sm-Ca alloy exhibited a good combination of yield strength at 135 MPa, ultimate tensile strength at 199 MPa and elongation at 4.32%, which was ascribed to grain refinement strengthening. Furthermore, the T6 treated AZ91-Sm-Ca alloy possessed yield strength of 154 MPa and elongation of 7.1%, which was due to grain refinement strengthening and reduction in discontinuous precipitates. | Redeemina Comfort Bonnah Yu Fu Hai Hao | 2019 | China Foundry2019，16，5： | 9 |
| 2 | 公共行政视野下的应急管理研究与实践:兴起、演变、拓展和未来方向显示文摘1984年,联邦紧急事务管理署(Federal Emergency Management Agency,简称FEMA)和全美行政院校联合会(National Association of Schools of Public Affairs and Administration,简称NASPAA)合作培养了一批专注于应急管理研究和实践的学者,其目的是创建一个囊括研究者和实践工作者的共同体(Community),帮助各级应急管理者在面对愈来愈有挑战性的问题时,进一步提高工作效率.虽然财政支持力量薄弱,但是NASPAA和FEMA的行动引领了应急管理研究和实践的改革.本文首先回顾了自1984工作坊以来FEMA经历的变革,随后在公共行政语境下探讨NASPAA和FEMA的研究员在应急管理研究和实践领域的影响. | Lousie Comfort | 2016 | 风险灾害危机研究2016，，1： | 4 |
| 3 | Application of an interactive computer program to manage a problem-based dental curriculum显示文摘 | mcgrat c comfort mb luo y | 2006 | J Dent Educ2006，70，4： | 1 |
| 4 | Applicationof aninteractive computer program to manage a problem--based dentalcurriculum显示文摘 | MCGRATH C COMFORT MB LUO Y | 2006 | J Dent Edue2006，，4： | 1 |
| 5 | Effect of health insur- ance on the use and provision of maternal health services and maternal and neonatal health outcomes: A systematic review显示文摘 | I Comfort AB Peterson LA Hatt LE | 2013 | J Health Popul Nutr2013，31，4： | 1 |
| 6 | Part I: Test/numerical model and validation 显示文摘 | Studies of air-flow and temperature fields inside a passenger compartment for improving thermal comfort and saving energy | 2009 | Applied Thermal Engineering2009，29，： | 1 |
| 7 | Characterization of HTPE Propellants显示文摘 | Comfort T F | 1999 | CPIA Publication1999，2，687： | 1 |
| 8 | Pilot -scale treatment of RDX-contaminated soil with zerovalent iron显示文摘 | Comfort S D Shea P J Machacek T A | 2003 | J Environ Qual2003，32，： | 1 |
| 9 | Interorganizational coordination in extreme events:The World Trade Center attack显示文摘 | Comfort L K Kapucu N | 2006 | Natural Hazards2006，39，2： | 1 |
| 10 | Remediating munitionscontaminated soil with zerovalent iron and cationic surfactants显示文摘 | Park J Comfort S D Shea P J | 2004 | J Environ Qual2004，33，： | 1 |
| 11 | Si/SiGe epitaxial-base transistors-part I: materials, physics and circuits 显示文摘 | HARAME D L COMFORT J H CRESSLER J D | 1995 | IEEE TED1995，42，3： | 1 |
| 12 | Gelation properties of salt soluble meat protein and soluble wheat protein mixtures 显示文摘 | Sarah Comfort Nazlin K Howell | 2003 | Food Hydrocolloids2003，70，2： | 1 |
| 13 | Gelation Properties of Soya and Whey protein Isolate Mixtures 显示文摘 | COMFORT S HOWELL NK | 2002 | Food Hydrocolloids2002，16，6： | 1 |
| 14 | Nitrogen fertilization of spring wheat genotypes : Influence on root growth and soil water depletion显示文摘 | Comfort S D Malzer G L Busch R H | 1988 | Agronomy Journal1988，80，： | 1 |
| 15 | Si/SiGe epitaxial-base transistor-part 1:materials,physics,and circuits 显示文摘 | Comfort J H Cressler J D | 1995 | IEEE Electron Devices1995，42，3： | 1 |
| 16 | Iron- mediated remediation of RDX-contaminated water and soil under controlled Eh/pH 显示文摘 | Singh J Comfort S D Shea P J | 1999 | Environ Sol Technol1999，33，： | 1 |
| 17 | Analytic versus holistic scoring of science performance tasks显示文摘 | Klein S.P Stecher B.M Shavelson R.J McCaffrey D. Ormseth T. Bell R.M. Comfort K.& Othman A.R | | 0，，02： | 1 |
| 18 | Editorial: Incident Command Systems:A Dynamic Tension among Goals, Rules and Practice显示文摘 | Boersma K Comfort L Groenendaal J | 2014 | Journal of Contingencies and Crisis Management2014，22，1： | 1 |
| 19 | Emergency Management Research and Practice in Public Administration: Emergence, Evolution, Expansion, and Future Directions显示文摘 | Louise K. Comfort William L. Waugh Beverly A. Cigler | 2012 | Public Administration Review2012，，4： | 1 |
| 20 | Turning conflict into co-operation, or- ganizational designs for community response in disasters显示文摘 | Comfort L K | 1990 | International Journal of Mental Health1990，，1： | 1 |
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