课堂细节描述——推进校本教研有效实施的新技术     

唐皓  宿强  邹昌淑 《教育科学论坛》2006,(12):18-20

观察大量的校本教研现场后,我们在和学校管理者和教师们的交流中发现,对校本教研的规范开展大家都持肯定态度,但同时流露出对校本教研的“质”的担忧。他们把现状归因在缺乏“专业引领”,希望通过专家的介入去改变这种局面。这的确是解决问题的一种办法,但同时也是目前校本教研  相似文献   

Myricetin protects against diet-induced obesity and ameliorates oxidative stress in C57BL/6 mice     

Hong-ming Su  Li-na Feng  Xiao-dong Zheng  Wei Chen 《Journal of Zhejiang University. Science. B》2016,17(6):437-446

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中小学素质教育实践基地理念探讨   总被引：2，自引：0，他引：2  

于素云 《教育理论与实践》2003,(18)

随着素质教育的推进,各种类型的素质教育实践基地先后建立起来,并且发展较快。根据中小学素质教育实践基地的建设与运行现状,在实践操作中,实践基地教育如何起到课堂教学的延伸作用、有效地培养学生的创新精神和实践能力、促进学生的全面发展,则首先需要从实践基地建设与发展的理念上作出定位,设计“以人为本”的实践教育目标与原则,采取积极有效的教学方法与措施,使实践基地教育健康有效地发展,切实为素质教育服务。  相似文献   

Modeling water and carbon fluxes above summer maize field in North China Plain with back-propagation neural networks     

Qin Z  Su GL  Yu Q  Hu BM  Li J 《Journal of Zhejiang University. Science. B》2005,6(5):418-426

INTRODUCTION Dynamics of carbon and water vapor fluxesexchange between the atmosphere and the ecosystembiosphere, depend on complex and non-liner interplayamong physiological, ecological, biochemical andedaphic factors and meteorological conditions (Jarvis,1995; Leuning et al., 1995). There are many studiesquantifying the fluxes across different time and spacescales as well as assessing the environment con-straints on them by some kinds of biophysical orempirical models whose resul…  相似文献   

热带植物花卉的抗氧化性研究     

刘红  胡咸俊王维汤威峰  王琳苏秀丹  赵丹薇钟琼芯 《海南师范学院学报》2007,20(4):339-341,354

为了筛选具有抗氧化性的热带花卉，对海南师范大学校园中的12种花卉的鲜花和干花的水提取物、50％乙醇提取物和70％丙酮提取物进行清除DPPH的实验．结果表明：紫薇、干凤凰花、干洋金凤、大叶龙船花卉和干小叶龙船花卉的抗氧化效果最好．  相似文献   

Phase Transformations of Graphite and Carbon Black by Laser with Low Power Density     

孙景翟琪  雷贻文杨星 杜希文 《天津大学学报(英文版)》2007,13(5):318-321

The structure phase transformations of graphite and carbon black induced by pulsed laser were studied in this paper.Under irradiation with laser beam of 1.06 μm wavelength and power density of 106 W·cm-2,both graphite structure and carbon black structure were changed obviously.The results of Raman analyses and Transmission Electron Microscopy(TEM)observations show that graphite transforms into nanodiamond about 5 nm and carbon black is graphitized.It is demonstrated that graphite is the intermediate phase in the transformation from carbon black to diamond,and graphite is easier to transform into diamond by laser irradiation than carbon black.  相似文献   

既要真实又要健康--浅谈作文主题的确立     

王素 《新乡教育学院学报》2003,16(1):28-30

在作文教学中,如何妥善处理主题的真实和健康二者的关系问题是一个比较棘手的问题,有人甚至认为它们是互相矛盾的。实际上,在我们的作文过程中,真实和健康缺一不可。要想使它们有机地结合在一起,需要语文教师和考试命题者的共同努力。本文就尝试从这两个方面对这一问题进行探讨。  相似文献   

创伤性近侧指间关节屈曲挛缩治疗方法的探讨     

苏峰  张春林  张军威  李国通 《河北北方学院学报(医学版)》2001,(1)

目的:对创伤性近侧指间关节挛缩的发病机制和治疗方法进行探讨。方法:对1995～2000年在我院治疗的创伤性近侧指间关节屈曲挛缩病例进行回顾,指间关节挛缩的发病机制,根据关节内外粘连的不同因素进行松解手术治疗。结果:创伤性近侧指间关节屈曲挛缩的病变可分为关节内粘连、关节外粘连及复合性粘连。经过:(1)单纯松解掌板延长及屈指浅肌腱切断等手术。(2)手术加牵引术,取得了良好结果。平均改善关节活动度达100度(屈)(伸)-10度。结论:(1)创伤性近侧指间关节屈曲挛缩的发生与早期处理不当有关。(2)粘连可以是关节内或关节外因素及复合因素造成。(2)手术治疗配合术后牵引治疗可取得良好的效果。  相似文献   

面试技术在选拔人才中的应用     

苏晓姗 《广东技术师范学院学报》2007,(3):53-56

在知识经济时代,人才是企业最重要的战略资源.人力资源管理的核心,就是对人才的“选、育、用、留“,在这四个环节中,选拔人才是基础,只有人才选好了,才会有后来一系列的人力资源管理.面试是人力资源管理领域中应用最普遍的一种测评方法,它不仅可以评价出被试的学识水平,还能评价出被试者的能力、才智及个性心理特征等,因此,面试是企业在人员招聘中广泛使用的测评手段.  相似文献   

Tandem Biocatalysis by CotA-TJ102@UIO-66-NH2 and Novozym 435 for Highly Selective Transformation of HMF into FDCA     

Chang  Xin  Zhang  Chengyu  Gao  Lan  Liu  Xiao  You  Shengping  Qi  Wei  Wang  Kang  Guo  Xin  Su  Rongxin  Lu  Han  He  Zhimin 《天津大学学报(英文版)》2019,25(5):488-496

2,5-Furandicarboxylic acid(FDCA) is a potential biorenewable chemical for applications including plastics, polyamides, drugs, etc. The selective biosynthesis of FDCA from 5-hydroxymethylfurfural(HMF) by a specific enzyme poses a great challenge. In this study, we reported an efficient strategy to produce FDCA from HMF by the tandem biocatalysis of laccase(Cot A-TJ102@UIO-66-NH_2) and Novozym 435. For the first step, a nanoparticle metal–organic framework was synthesized as a carrier to immobilize Cot A-TJ102@UIO-66-NH_2, which was assigned for the production of 5-formyl-2-furancarboxylic acid(FFCA) and featured an enzyme loading of 255.54 mg/g, specific activity of 135.90 U/mg, and solid loading ratio of 99.65%. Under optimal conditions, an ideal FFCA yield of 98.5% was achieved, and the Cot A-TJ102@UIO-66-NH_2 presented a high recycling capacity after 10 cycles. For the second step, Novozym 435 was applied for the further conversion of FFCA into FDCA, presenting a high FDCA yield of 95.5% under the optimized conditions. Novozym 435 also exhibited a high recyclability after eight cycles. As a result, the tandem biocatalysis strategy provided a 94.2% FDCA yield from HMF, indicating its excellence as a method for FDCA production.  相似文献