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数形结合既具有数学科的鲜明特点又是数学研究的常用思想方法．它在中学数学中的应用大致分为两种情形：一是借助于数的精确性来阐明形的某些特性，二是借用图形的几何直观性来阐明数之间的某种关系． 相似文献
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吕莉 《中学物理教学参考》2005,34(1):58-61
Microsoft Office办公软件中的Excel电子表格软件具有强大的数据统计、分析功能，不仅能进行复杂的公式运算，而且能以各种形式的图形、图象直观地表示数据分布的规律．正因为如此，它在物理教学中有比较广泛的应用．下面结合实例来说明Excel软件在中学物理教学中的基本应用． 相似文献
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孙志法 《福建教育学院学报》2006,(8):25-27
一、概念的认识
近年来．国内外对任务型教学法的研究方兴未艾．其定义与定位也符有不同。Nunan认为语言学习中的交际任务是学习者使用语言来理解、交际产生的活动。他们的注意力应集中于语言的意义．而非语言的形式。任务型教学是把语言应用的基本理念转化为具有实践意义的课堂教学模式。在这种教学法方式中．教师围绕特定的交际和语言项目，设计出具有明确、具体、可操作的任务。学生通过表达、询问、沟通、交涉、协商等多种语言活动形式来完成任务， 相似文献
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一、选择题（每小题只有一个选项符合题意,每小题6分,共42分）
1．下图表示人体糖代谢的部分过程,图解中都存在错误的是（）． 相似文献
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探索1,6-二磷酸果糖(FDP)在分子水平对蹦床运动员疲劳后红细胞(RBC)能量代谢的影响规律,为运动性疲劳的恢复提供实验研究依据。FDP 800mmol/L和0mmol/L分别孵育疲劳后红细胞,分别用细胞化学方法、比色法、高效液相色谱法检测细胞色素氧化酶活力,2,3-二磷酸甘油酸(2,3-DPG)水平,三磷酸腺苷(ATP)、二磷酸腺苷(ADP)、一磷酸腺苷(AMP)含量并计算能荷。FDP处理后红细胞ATP、能荷、细胞色素氧化酶活力和2,3-DPG水平显著增加,ADP和AMP含量显著下降。FDP能够通过增加细胞色素氧化酶活力,提高2,3-DPG水平来改善疲劳红细胞能量供应,缓解运动性疲劳。 相似文献
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Factitious disorder by proxy (FDP), historically known as Munchausen syndrome by proxy, is a diagnosis applied to parents
and other caregivers who intentionally feign, exaggerate, and/or induce illness or injury in a child to get attention from
health professionals and others. A review of the recent literature and our experience as consultants indicate clearly that
FDP has emerged in educational settings as well. Variants of educational FDP include parents of children with real or fabricated
physical disabilities who request excessive or unneeded school health services and parents who request extensive education-related
evaluations for children who do not demonstrate any educational need. If such cases continue to emerge, school districts will
be asked to test more students who do not have disabilities under the Individuals with Disabilities Education Act. Also, special
educational directors will be weighing the cost of providing unneeded testing and educational services against the cost of
defending themselves in litigation to prove that the testing and services are unnecessary. A table of guidelines is provided
for school and other personnel confronted with repeated requests for unwarranted special education services. Suggestions for
future research are included. 相似文献
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罗非鱼能较快的吸收水体中的DDT并在6h达到积累高峰，DDT在各器官的分布是不均匀的，按24h放射性活度的高低排列是：肝胰脏、胆囊、肠、脑、鳃和肌肉．肝胰脏在24h的浓集系数为48477，是肌肉的57倍．纯中药鱼病保护剂──FDP能促进罗非鱼对DDT的吸收和降解．罗非鱼经FDP浸泡后，在暴露于14C－DDT6h内，能普遍的提高各器官对DDT的吸收能力．肝胰脏积累DDT的能力加强，达对照组的1．69倍．24h经FDP处理的罗非鱼肝胰脏的总放射性活度明显下降，极性降解产物比例增加．说明FDP对罗非鱼的肝胰脏的解毒功能有促进作用． 相似文献
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Objective: To observe the effects of fructose-1,6-diphosphate (FDP) on serum levels of cardiac troponin 1 (cTnl) and creatine kinase-MB (CK-MB), as well as the concentration of calcium in cardiomyocytes (Myo[Ca2 ]) and activity of sarcoplosnic Ca2 -ATPase (SRCa2 -ATPase) in Adriamycin (ADR)-treated rats. Methods: Rats were intraperitoneally injected with ADR (2.5 mg/kg every other day for 6 times) and then with different dosages of FDP (every other day for twenty-one times). Bi-antibodies sandwich Enzyme linked immune absorption assay (ELISA) was performed to detect serum level of cTnl. CK-MB was detected by monoclonal antibody, Myo[Ca2 ] was detected by fluorescent spectrophotometry and the activity of SRCa2 -ATPase was detected by inorganic phosphate method. Results: FDP (300, 600, 1200 mg/kg) significantly reduced the serum levels of cTnl and CK-MB, while at the same time decreased calcium concentration and increased SRCa2 -ATPase activity in cardiomyocytes of ADR-treated rats (P<0.01). Conclusions: FDP might alleviate the cardiotoxic effects induced by ADR through decreasing calcium level as well as increasing SRCa2 -ATPase activity in cardiomyocytes. 相似文献
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Anticoagulation therapy in intra-aortic balloon counterpulsation: Does IABP really need anti-coagulation? 总被引：1，自引：0，他引：1
INTRODUCTIONTheintra aorticballoonpump(IABP)isthemostwidelyusedofallcirculatoryassistdevicestodayandisroutinelyusedinawiderangeofse riouscardiovascularconditions,rangingfromhe modynamicinstabilityinpatientssufferingfromcomplicationsofacutemyocardialinfarc… 相似文献
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《欧洲教育》2013,45(3):116-126
For six long years the Hochschulrahmengesetz has been the main point of discussion on educational policy in the Federal Republic of Germany. There are three major reasons for this: an attempt was made for the first time to provide legislation for all universities in the Federal Republic; only by amending the Constitution in 1969 was the federal government empowered to establish a "framework" within which the Länder (federal states), who are directly responsible for the universities, both legislatively and executively, are to operate in the future. Furthermore, the Federal Coalition Government and its supporting parties (Social Democratic Party or SPD, and Liberal Democratic Party or FDP) are anxious to push ahead with higher education reform. And then, of course, the regulations introduced for university entrance have also become more and more an important topic of discussion over the past few years. 相似文献
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Objective: To investigate if intra-aortic balloon pump(IABP) is contraindicated without anticoagulation therapy. Methods:
Some 153 IABP patients in the King Abdulaziz Cardiac Center(KSA) were randomly assigned into two groups. Anticoagulation group
(Group A) consisted of 71 patients who were given heparin intravenously with target aPTT50–70 seconds. Non-anticoagulation
group (Group B) consisted of 82 patients without intravenous heparin during balloon pumping. Hematological parameters including
platelet count, D-dimer, Plasminogen activator inhibitor-1 (PAI-1) and fibrinogen degradation products (FDP) were checked
respectively at the point of baseline, 24 hours, 48 hours and 24 hours post IABP counterpulsation. Clot deposits on balloon
surface, vascular complications from IABP including bleeding and limb ischemia were recorded. Results: Platelet count and
PAI-1 level decreased at 24 hours and 48 hours in both groups (P<0.05). D-dimer dimer and FDP level increased at 24 hours and 48 hours in both groups(P<0.05), but returned to the baseline level 24 hours post IABP removal (P>0.05). Three patients in Group A and 2 patients in Group B developed minor limb ischemia (P>0.05). No major limb ischemia in either group. Two patients in Group A suffered major bleeding and required blood transfusion
or surgical intervention, whereas no patient had major bleeding in Group B. Eight patients had minor bleeding in Group A,
but only 2 patients in Group B (P<0.05). No clot deposit developed on IABP surface in either group. Conclusion: IABP is safe without routine anticoagulation
therapy. Selecting appropriate artery approach and early detection intervention are key methods for preventing complications. 相似文献
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Klaus Luther 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1992,38(6):609-628
At the end of 1987 the lower house of the German parliament (Bundestag) established a Commission of Enquiry to make recommendations by the end of the parliamentary session in 1990 on the future direction of education policy in the Federal Republic. The problems and disagreements associated with its establishment and terms of reference are discussed. Attempts to reach a new consensus in educational policy were crucial to its activities. Against this background, and following a short discussion of the development of educational policy from the early 1970s to the end of the 1980s, the next sections of the paper present the essential findings of the Commission. It is seen that the Interim Report, and particularly the Final Report, were marked by a large number of divergent votes between the majority CDU/CSU and FDP Members of Parliament and experts, and the minority SPD and Green MPs and experts. There was also a remarkable degree of consensus, albeit at a relatively abstract level. The last section of the paper looks forward to further parliamentary consideration of the Final Report, and to the likelihood of the Commission's recommendations' being implemented, insofar as this can be delineated or anticipated two years after the conclusion of its work. In this context it is proper to address also the problems for educational policy posed by the unification of Germany on 3rd October 1990, two weeks after the Commission completed its work, and by the drawing together of Europe through the single internal market from 1993. 相似文献
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《Ethnography and Education》2013,8(1):33-48
Environmental education has been at the centre of international and national policies of sustainable development for the last several decades, and has stimulated debate regarding both its inclusion in curricula and proposed methods for its implementation. Research has given critical attention to diverse theories and practices of environmental education, but has tended to take a narrow methodological focus on specific curricula and policies or on activities within strictly delineated sites such as classrooms or natural areas. In contrast, this research is based on anthropological fieldwork conducted in a rural community in Costa Rica, and argues that using a wider ethnographic approach allows for a fuller exploration of the ways in which environmental education programming is negotiated and practised. 相似文献