Results 31 to 40 of about 5,823,027 (195)

氯酚废水处理方法研究进展

open access: yesGongye shui chuli, 2013
简要介绍了处理氯酚类废水的主要方法, 主要分为物化法、生物法和化学法。特别介绍了化学法中的高级氧化法和还原法, 分析了各种方法处理氯酚类废水时存在的优势和主要面临的问题, 展望了其研究与应用前景, 并为氯酚类化合物废水处理的理论研究和实践应用提供了重要的参考。
李君敬, 刘惠玲, 程修文
doaj   +2 more sources

粪便隐血检测方法的临床应用评价

open access: yesZhongguo shiyan zhenduanxue, 2013
粪便隐血试验(fecal occult blood test,FOBT)是诊断消化道出血及大肠肿瘤筛查的重要手段。目前主要采用化学法和免疫法两种。化学法是传统的粪便隐血试验方法,其敏感性好,操作简便,但影响因素较多,多种药物及食物都有可能造成化学法检测结果出现假阳性。近年来 ...
史虹, 王丽群, 梁艳, 仲人前
doaj  

一种酪氨酸磷酸化肽的纯化方法

open access: yes, 2011
本发明为β-消除和Michael亲核加成方法在磷酸化蛋白质组学研究中的应用。具体地说是一种酪氨酸磷酸化肽的纯化方法,是利用β-消除和Michael亲核加成反应消除掉蛋白酶解液中非酪氨酸磷酸肽上的磷酸修饰基团,然后再用磷酸肽富集材料富集未发生消除反应的酪氨酸磷酸化肽。本发明利用β-消除和Michael亲核加成反应高特异性,高选择性的从复杂蛋白酶解样品中纯化酪氨酸磷酸肽的方法 ...
叶明亮   +3 more
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Making Interview Multilingualism Visible: Transnational Chinese Language Teacher Identity Construction

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT This study examines multilingual practices in research interviews, focusing on English lexical insertions in Chinese‐language research interviews with teachers of Chinese in Australian secondary schools, and treating these code‐switches as analytically meaningful rather than incidental.
Chengwen Yuan, Tianwei Zhang, Gary Bonar
wiley   +1 more source

静电水垢控制器

open access: yesGongye shui chuli, 1982
抑制水垢的方法,可分加化学药品和不加化学药品的两种方法。前者由于使用化学药品,如铬酸盐,磷酸盐等而引起的水质污染公害问题是不可忽视的。后者虽有磁力法,电解法及接触反应法等,但接触反应法尚缺乏可靠性;电解法缺乏准确性且有很高的电解孔蚀的危险性。
胥士杰
doaj   +2 more sources

温和水热法制备层状KZn2(PO4)(HPO4)的热化学及热分解动力学

open access: yes, 2006
以硝酸锌和磷酸为原料,在氢氧化钾存在下,用温和水热法制备了KZn2(PO4)(HPO4)晶体,用 XRD、FT-IR、SEM对其进行结构形貌表征,用TG-DTG技术研究其热分解过程。XRD和TEM结果表明:KZn2(PO4)(HPO4)为层状结晶体,属于三斜晶系,空间群为P-1(2),晶胞参数a=9.41496 A、 b=8.8746 A、c=5.21115 A、V=2.9983 A3、Z=2。
童张法, 袁爱群, 吴健, 黄在银
core  

Twelve Years Revisited: Translanguaging as Relational Pedagogy for Sustaining Language Learning Motivation

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT This study examines how foreign language teachers’ beliefs about the medium of instruction and translanguaging evolve over time by revisiting three in‐service teachers twelve years after their initial interviews. Using a qualitative longitudinal design, the study traces how translanguaging was initially framed as pedagogically deficient but ...
Danping Wang
wiley   +1 more source

Language Mindset and Discipline Mindset Both Matter: Exploring the Effect of Growth Mindset on Motivation and Willingness to Communicate in EMI Higher Education

open access: yesInternational Journal of Applied Linguistics, EarlyView.
ABSTRACT In English medium instruction (EMI), students face cognitive and emotional demands in second language (L2) communication, which may hamper their motivation and willingness to communicate (WTC). Adopting a mixed‐methods design, this study explores how growth mindsets affected student motivation (e.g., ideal L2 self and ideal disciplinary self ...
Pengzhan Yang   +2 more
wiley   +1 more source

电化学方法治理含染料废水的现状与进展

open access: yesGongye shui chuli, 2001
电化学方法处理含染料废水已引起广泛的关注。作者综述了电化学方法处理含染料废水的现状与进展,介绍了内电解法、电凝聚电气浮法和电催化氧化法的研究现状,并对各种方法进行了评述,展望了今后的发展方向。
王爱民   +3 more
doaj   +2 more sources

纳米结构In2O3八面体的碳还原法合成与生长机理

open access: yes, 2006
准一维氧化物纳米材料因其特殊的光学性能、电学性能及空间几何结构而广受关注,到现在为止已经制备出多种准一维二元氧化物纳米结构,例如ZnO,SnO2,Ga2O3,In2O3,SiO2,MgO,Al2O3 等。这类材料的制备方法也是多种多样,主要有激光烧蚀法(Laser ablation method)、气相蒸发法(Vapor-phase evaporation)、模板法(Template ...
周泽广   +5 more
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