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13篇 您的检索式:作者名="J.Allen"
    题名 作者 年代 出处 被引量
1青海湖沉积物中的长链不饱和脂肪酮(长链烯酮)显示文摘在青海湖沉积物中检出了含有2~4个双键的长链(C37-C40)甲基和乙基脂肪酮。这是世界沉积于碱性环境和各种不同盐度条件下(耳海,淡水;青海湖,半咸水;尕海,咸水)的近代湖泊沉积物中的长链不饱和脂肪酮的首次详细报导。许多地球化学家广泛用这些化合物经过计算公式来估算海洋沉积物的古温度。如果对这些化合物估算海洋沉积物古温度的计算公式进行适当校正,那么也可用这些化合物来推知湖泊沉积物的古温度。李景贵 范璞 崔明中 R.P.Phalp J.Allen 1995沉积学报1995,13,1:6
2刑事诉讼的法理和政治基础显示文摘本文从法治的核心内容出发,论述了证据法对诉讼制度的重要意义以及证据是法治的基石的原理。作者认为,证据法具有普适性,证据法的大部分内容在人类所有的诉讼程序中都是相同的,只有极其微小的例外。相比之下,刑事诉讼法具有地方性,体现了不同的制度安排和设想。诉讼法是本土化的,属于地方性知识;像实体法一样,它反映了时间空间的特殊性。刑事程序不能与其周围因素隔绝开来而孤立地加以看待,而要分析政府的性质、政府与民众的适当关系以及个人利益的性质等。因此,研究美国刑事诉讼法,不能仅仅考察成文法律和案例,还要深入了解美国的历史、文化、经济以及其他影响因素。要理解美国刑事司法制度的实际运作,需要深入研究其法理和政治问题,包括:书本上的法律与实践中的法律之间的差别;程序法与实体法之间紧密的相互关系,特别是事实上程序法是实体法的载体,而非我们习惯上所认为的相反的情况;一般的历史,特别是种族关系和种族歧视问题;经济因素。Ronald J.Allen 张保生 李哲 艾静 2007证据科学2007,,5:4
3不同终板准备方法对ProDisc-C颈椎人工椎间盘假体稳定性的影响显示文摘目的:探讨不同颈椎终板准备方法对颈椎人工椎间盘置换术后金属-骨界面刚度的影响,了解终板准备方法与人工椎间盘假体稳定性的关系。方法:取6具新鲜成人尸体颈椎标本,分离出C3~T1共35个椎体(1例C6~C7融合),剔除每个椎体上下面的椎间盘组织,显露出骨性终板,分为:去终板组17个,完全去除骨性终板;保留终板组18个,完整保留骨性终板。在所有椎体的上面安放相应大小的颈椎人工椎间盘(ProDisc-C)后用MTS-858生物力学实验机进行疲劳测试和屈服测试,得到金属-骨界面的刚度、位移和最大屈服压力,从其中1具颈椎标本取出4个椎体(每组各2个)切片行HE染色后用光镜观察金属-骨性界面。结果:疲劳前测试金属-骨界面刚度去终板组为1470±180N/mm,高于保留终板组的1260±170N/mm(P<0.0001);疲劳后测试两组刚度均有上升,去终板组刚度为1990±110N/mm,仍高于保留终板组的1680±140N/mm(P<0.0001)。疲劳前测试两组的终板位移分别为0.45±0.09mm和0.41±0.10mm,无显著性差异(P=0.15),疲劳后测试去终板组位移0.53±0.12mm小于保留终板组的0.66±0.14mm(P=0.005)。去终板组最大屈服压力为1110±350N,略小于保留终板组的1250±230N,但无显著性差异(P=0.27)。组织切片显示去终板组金属-骨界面贴合良好,而保留终板组金属-骨界面有明显的缝隙。结论:不同的终板准备方法会影响到假体金属-骨界面的刚度和稳定性。去终板组金属-骨界面的刚度和稳定性优于保留终板组,良好的金属-骨界面接触是颈椎人工椎间盘假体稳定的关键因素之一。谭荣 邹德威 Hansen Yuan Amir H.Fayyazi Nathaniel R.Ordway Matthew J.Allen 2007中国脊柱脊髓杂志2007,17,9:3
4正磷酸活化木质素吸附Cr(Ⅵ)的固定床实验和模型(英文)显示文摘The advantage of using an available and abundant residual biomass,such as lignin,as a raw material for activated carbons is that it provides additional economical interest to the technical studies.In the current investigation,a more complete understanding of adsorption of Cr(VI) from aqueous systems onto H3PO4-acid activated lignin has been achieved via microcolumns,which were operated under various process conditions.The practice of using microcolumn is appropriate for defining the adsorption parameters and for screening a large number of potential adsorbents.The effects of solution pH(2-8),initial metal ion concentration(0.483-1.981 mmol·L-1),flow rate(1.0-3.1 cm3·min-1),ionic strength(0.01-0.30 mmol·L-1) and adsorbent mass(0.11-0.465 g) on Cr(VI) adsorption were studied by assessing the microcolumn breakthrough curve.The microcolumn data were fitted by the Thomas model,the modified Dose model and the BDST model.As expected,the adsorption capacity increased with initial Cr(VI) concentration.High linear flow rates,pH values and ionic strength led to early breakthrough of Cr(VI).The model constants obtained in this study can be used for the design of pilot scale adsorption process.Ahmad B.Albadarin Chirangano Mangwandi Ala'a H.Al-Muhtaseb Gavin M.Walker Stephen J.Allen Mohammad N.M.Ahmad 2012Chinese Journal of Chemical Engineering2012,20,3:3
5Dynamics of bovine spleen cell populations during the acute response to Babesia bovis infection: an immunohistological study显示文摘D. A.SCHNEIDER H.YAN R. G.BASTOS W. C.JOHNSON P. R.GAVIN A. J.ALLEN G. M.BARRINGTON L. M.HERRMANN‐HOESING D. P.KNOWLES W. L.GOFF 2010Parasite Immunology2010,,1:1
6Advanced Glycation End Products in Diabetes‐Associated Atherosclerosis and Renal Disease: Interventional Studies显示文摘KARIN A.JANDELEIT‐DAHM MARKUSLASSILA TERRI J.ALLEN 2006Annals of the New York Academy of Sciences2006,,1:1
7Development and characterization of a novel liposome-based formulation of SN-38显示文摘J.Allen Zhang Tong Xuan Manjeet Parmar Lan Ma Sydney Ugwu Shahid Ali Imran Ahmad 2003International Journal of Pharmaceutics2003,,1:1
8The Measurement and antecedents of affective,continuance and normative commitment to the organization显示文摘Natalie J.Allen John P.Meyer 0,,01:1
9Examination of the combined effects of work values and early work experiences on organizational commitment显示文摘John P.Meyer P. GregoryIrving Natalie J.Allen 1998J Organiz Behav1998,,1:1
10Examination of the combined effects of work values and early work experiences on organizational commitment显示文摘John P.Meyer P. GregoryIrving Natalie J.Allen 1998J. Organiz. Behav1998,,1:1
11衍射光学应用于红外成象仪(上)显示文摘本文概速衍射光学、微光学及其在红外成象系统中的应用。这篇技术综述介绍几种制备方法,重点放在金刚石机械加工对红外系统和材料的重要性,讨论用衍射元件通常可实现的不同光学功能。在讨论应用时,既通过广泛引用参考文献给出一个总体面貌,又通过三个实例给出详细介绍。J.Allen Cox 李玲 1996红外1996,,9:0
12Coordination chemistry of surface-associated ligands for solid-liquid adsorption of rare-earth elements显示文摘General guidelines for the design of ligands for the enrichment of rare-earth elements by solid-liquid adsorption are described using coordination chemistry.Relevant properties of ligands include selectivity of metal ions based on adjustment of donor atom polarizability,denticity,and the pKarange of the binding sites.The selectivity of solid-phase materials for the enrichment of rare-earth ions by the ligand design guidelines is outlined,with special consideration of additional variable factors including steric hindrance,saturated binding sites,variability in speciation caused by the identity of counterions and ionic strength,and size-exclusivity in ligands stemming from differences in bite angle,preo rganization of ligands,or intraligand interactions.This review analyzes some principles of selectivity of rare-earth elements with ligands organized by donor type from examples collected from reports published between 2009 and 2021.Jessica L.Hovey Timothy M.Dittrich Matthew J.Allen 2023Journal of Rare Earths2023,41,1:0
13衍射光学应用于红外成象仪(下)显示文摘3.3可调谐红外滤光片作为最后一个实例,为了说明近期技术在红外成象仪中的应用,介绍一个用LIGA技术实现的可调谐红外滤光片。LIGA取自德文缩写(Lithographie、Gal-vanoformung、Abformung),它表示应用X-射线石印术、镍电镀术和丙烯酸模塑法制备微电机系统(MIEMS)。J.Allen Cox 李玲 1996红外1996,,10:0
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