高等院校生物专业部分学科之间重复内容的教法探讨     

童贯和 《淮南师范学院学报》2007,9(5):107-109

以生物化学、植物生理学和微生物学的重复内容——糖代谢为研究对象,对高等院校生物专业各学科之间重复内容的教法进行了探讨。介绍了对比教学法、导思教学法、图解教学法和研讨教学法的教学过程和教学效果。认为采用多种教学方法可有效地提高课堂教学效率,有利于提高学生的学习热情,充分发挥学生的学习自主性,发展学生的创造力。  相似文献   

稀土、碱金属在特定催化反应中的调变机制     

蔡炳新 《怀化学院学报》1991,(2)

本文研究了稀土,碱金属添加物分咽在以氢型丝光沸石(HM)为载体的pt—v_2o_5催化剂、碱土金属氧化物(Cao)催化剂中对抑制积炭,促进甲烷氧化偶联反应的作用机理。发现:稀土以碱性,强供氧能力抑制酸中心和金属中心的积炭;碱金属以强供电子的能力诱导偶联催化剂活性组分o的生成而导致活性,选择性的提高.  相似文献   

竞技健美操与健身健美操的能量代谢特点及意义     

谭惠芳 《湘南学院学报》2001,22(5):111-113

物质和能量代谢是各组织器官机能活动的基础 ,运用其能量代谢规律指导竞技健美操与健身健美操的训练 .  相似文献   

Polymorphonuclear leukocyte mediated oxidative inactivation of alpha-1-proteinase inhibitor: Modulation by nitric oxide     

Mohammad Muzaffar Mir  Abdul Rashid Khan  Nazir Ahmad Dar  Mohammad Salahuddin 《Indian journal of clinical biochemistry : IJCB》2005,20(1):184-192

Alpha-1-proteinase inhibitor activity was studied in presence of resting and activated polymorphonuclear leucocytes. Four different agonists; phorbol myristic acetate, N-formyl-methionyl-leucyl-phenylalanine, opsonised zymosan and arachidonic acid decreased the inhibitor activity by 23.3%, 20%, 12% and 16.6^ respectively. The inhibitor activity was protected by using various free radical scavengers. Catalase and superoxide dismutase both restored activity by about 18%, mannitol by 13% and sodium azide by 17.3%. The inhibitor activity was also protected significantly by pretreatment of polymorphs with L-Arg, a precursor of nitric oxide, before activation. L-Arg was also observed to suppress the generation of superoxide and hydroxyl radical appreciably. The nitric oxide synthase inhibitor, aminoguanidine drastically inhibited the nitrite release and reversed the protection offered by L-Arg to the inhibitor activity. Our results indicate a multifactorial nature of the inactivation process, the culprit species being superoxide, hydrogen peroxide, hydroxyl radical and hypohalides. Nitric oxide seems to scavenge the superoxide radical directly after its formation rather than inhibiting its generation by NADPH oxidase as was believed earlier.  相似文献   

Metabolic optimisation of the basketball free throw     

Johnny Padulo  Giuseppe Attene  Gian Mario Migliaccio  Francesco Cuzzolin  Stefano Vando 《Journal of sports sciences》2015,33(14):1454-1458

The free throw (FT) is a fundamental basketball skill used frequently during a match. Most of actual play occurs at about 85% of maximum heart rate (HR). Metabolic intensity, through fatigue, may influence a technically skilled move as the FT is. Twenty-eight under 17 basketball players were studied while shooting FTs on a regular indoor basketball court. We investigated FT accuracy in young male basketball players shooting at three different HRs: at rest, at 50% and at 80% of maximum experimentally obtained HR value. We found no significant FT percentage difference between rest and 50% of the maximum HR (FT percentage about 80%; P > 0.05). Differently, at 80% of the maximum HR the FT percentage decreased significantly by more than 20% (P < 0.001) down to about 60%. No preliminary warm-up is needed before entering game for the FT accuracy. Furthermore, we speculate that time-consuming, cooling-off routines usually performed by shooters before each FT may be functional to improve its accuracy.  相似文献   

能量代谢与运动性月经周期紊乱的关系          下载免费PDF全文

黄引毅  李合  王人卫 《体育科研》2015,(6):17-19

运动性月经周期紊乱是女运动员中最常见的医学问题,其与机体的能量代谢关系密切。文章采用文献法就国内外学者对能量代谢与运动性月经周期紊乱之间的关系研究进行整合分析,可知运动性月经周期紊乱的发生与可利用能量、内脏脂肪含量、胆固醇代谢等因素有关。此外,瘦素作为调节脂肪细胞肥胖基因表达的一类激素,与机体能量代谢关系密切,对运动性月经周期紊乱的发生产生影响。  相似文献   

Upper limb aerobic training improves aerobic fitness and all-out performance of America's Cup grinders     

Paolo Emilio Adami  Anna Sofia Delussu  Angelo Rodio  Maria Rosaria Squeo  Loretta Corsi  Filippo Maria Quattrini 《European Journal of Sport Science》2015,15(3):235-241

  相似文献   

运动对绝经后女性骨代谢的影响     

王永梅  李世昌 《辽宁体育科技》2009,31(1):23-25

论述了运动对绝经后女性骨质的影响，为运动防治绝经后骨质疏松提供了理论依据。  相似文献   

补益中药干预对体育专业健美操专项学生代谢能力的影响     

董婕  刘晨 《体育科技文献通报》2010,18(6):118-119

探索中医＂补益药＂对体育专业健美操专项学生代谢能力积极影响作用。运用运动生理、生化相关指标对受试学生进行建模实验,将受试学生分为实验组与对照组,实验10周后进行相关生理、生化指标统计。结果发现,以补血、补阴类为主的补益药符合辨证施治的原则,对运动氧代谢有积极作用。实验组血色素、无氧功、Vo2max、最大运动能力在大强度训练后较对照组有显著提高肯定了补益中药对人体氧代谢能力的重要性。  相似文献   

果实有机酸组成及其代谢的研究进展     

陈美霞  王新国  房师梅 《潍坊高等职业教育》2007,(3)

果实品质的形成和调控已成为果树学研究的一个重要领域。有机酸是构成果实品质的重要因素。本文综述了果实有机酸物质组成、动态变化及其代谢的研究进展,并指出了今后的研究方向。  相似文献