Protective Role of <Emphasis Type="SmallCaps">l</Emphasis>-Arginine Against Free-Radical Mediated Oxidative Damage in Patients with Unstable Angina     

Tripathi P  Chandra M  Misra MK 《Indian journal of clinical biochemistry : IJCB》2010,25(3):302-306

Unstable angina is a critical condition of heart resulting from narrowing of vessels supplying blood to heart. Ischemia of the myocardium leads to oxidative stress and severe tissue damage. The objective of the present study was to determine the effect of l-arginine administration on the oxidant–antioxidant homeostasis which otherwise gets imbalanced in patients with cardiovascular diseases. The results obtained, show improvement in the oxidant–antioxidant levels of the subjects upon incorporation of l-arginine. Our findings suggest that supplementation of l-arginine along with regular anti-anginal therapy may be beneficial to the patients of unstable angina.  相似文献   

用DREF-Ⅲ摩擦纺多组分纬纱织造的织物风格特征     

S.M.Ishtiaque 《技术创新》2004,(11):24-27

织物风格特征是由织物组织结构和纱的特性决定的，新型纱线结构的不断出现和发展对织物性能和质量提出了更高的要求。研究表明：通过改变纺纱工艺可以获得不同的纱线结构，从而改变织物的风格特征。DREF-Ⅲ型摩擦纺包芯纱具有典型的皮芯结构，可以是双组分也可以是多组分，而且组分的不同会对织物性能产生不同的影响，纱的性能也会由于芯皮之间压力、摩擦力大小的不同而改变。以前的研究主要集中在包芯纱的拉伸性能上，而对空心纱几乎没有什么新的研究和讨论。  相似文献   

Emergent technologies against the background of everyday life: discursive psychology as a technology assessment tool     

Veen M  Gremmen B  te Molder H  van Woerkum C 《Public understanding of science (Bristol, England)》2011,20(6):810-825

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游戏、游戏活动和技术     

埃里奥特·M·艾夫顿  何水 《科学对社会的影响》1982,(4)

游戏活动自文明萌芽时期就有了,随着逐渐扩及群众性娱乐、教学计划和商业推销活动之后,便成了一种空前普遍化的现象。任何游戏都要有对立的双方或多方相互竞争才能进行。这就使游戏活动在临床治疗中找到了用场(“用游戏消除冲突”)並促使人们对游戏展开技术革新——改变游戏设备,但不改变游戏的主旨。这类革新中最新的一项,是微信息处理机或“芯片”。  相似文献   

Graduate and postgraduate state university education of laboratory specialists in Hungary: medical doctors, pharmacists and laboratory analysts     

Kovács GL  Ludány A  Koszegi T  Liszt F  Kellermayer M 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2011,21(1):22-29

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农业中的放射性同位素     

B.M.克列契科夫斯基  A.O.富尔曼  赵璞 《科学大众》1956,(7)

原子核的秘密的揭露,使人类掌握了新的無穷尽的能源。第一座原子能电站在苏联的建立,为將这个能源实际利用于工業和农業的和平目的,奠定了基础。原子技术的發展,开辟了把放射性同位素应用到各种全然不同的科学技术部門中去的广闊的可能性。人工取得放射性同位素的方法之一,是在原子核反应堆中用中子来照射。比如,用中子照射普通的天然的磷的时候,部分的磷原子核就和中子結合而变成磷的放射性同位素(磷-32)的原子核。当放射性磷的核衰变的时候,核中的一个中子轉化成質子,同时放射出一个β粒子(帶陰电的电子)。衰变是按照这个方式發生  相似文献   

寻找抗艾滋病的基因   总被引：2，自引：0，他引：2  

Dean  M 侯岗 《科学中国》1997,(12):2-9

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"An expedition to heal the wounds of war". The 1919 eclipse and Eddington as Quaker adventurer     

Stanley M 《Isis; an international review devoted to the history of science and its cultural influences》2003,94(1):57-89

The 1919 eclipse expedition's confirmation of general relativity is often celebrated as a triumph of scientific internationalism. However, British scientific opinion during World War I leaned toward the permanent severance of intellectual ties with Germany. That the expedition came to be remembered as a progressive moment of internationalism was largely the result of the efforts of A. S. Eddington. A devout Quaker, Eddington imported into the scientific community the strategies being used by his coreligionists in the national dialogue: humanize the enemy through personal contact and dramatic projects that highlight the value of peace and cooperation. The essay also addresses the common misconception that Eddington's sympathy for Einstein led him intentionally to misinterpret the expedition's results. The evidence gives no reason to think that Eddington or his coworkers were anything but rigorous. Eddington's pacifism is reflected not in manipulated data but in the meaning of the expedition and the way it entered the collective memory as a celebration of international cooperation in the wake of war.  相似文献   

["和平"号空间站历险记]回家(连载)     

杰瑞·M·得宁杰  张传军  张帆 《大科技．科学之谜》2002

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基因的调节物—组蛋白     

Cruns.  M 颂平 《科学中国》1993,(2):24-32

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