生物科学

The copper-catalyzed 1,3-dipolar cycloaddition of alkynes with azides is a typical example of "click" reaction.1 Since the reaction enjoys the advantages of high efficiency and regioselectivity and requires mild reaction conditions and simple purification procedures, it has become a versatile synthetic tool with applicability in diverse areas including bioconjugation and surface modification.2 The click reaction has also been utilized in polymer science with emphasis on the functionalization of preformed polymers through postpolymerization approaches.3 The effort of developing the reaction into a new polymerization technique, however, has met with only limited success.

登录后回答可以获得经验值奖励，并可以查看和管理所有的回答。登录|铜催化1，3偶极环加成反应的炔烃与叠氮化物是&点击&自reaction.1典型的例子反应享有高效率的优势和区域选择性并要求反应条件温和，简单净化程序，它已成为一个多功能综合工具在包括生物耦合和不同领域的适用性表面modification.2的点击反应亦是利用聚合物科学与功能化的重点通过postpolymerization approaches.3预制聚合物发展到一个新的聚合反应的努力技术，然而，只取得有限的成功。

Having characteristic of high biological identification,DNA analytic technique has been became one of main methods of bioassay.

认为由于DNA分析技术所具有的特点，使之已成为现今法科学生物检材检验的主要手段之一。

Basing on the height of the biological diversity, guiding by the view of scientific development, the prevention of biohazard must build and perfect aimed measure such as ecological compensation to promote coordinated development of human, society and nature.

因此，牧区鼠虫灾害的防治，还需要从保持和维护生物多样性的高度，以科学的发展观为指导，通过科技创新，建立和完善生态补偿机制等具有针对性的举措，以实现人、社会与自然的协调发展。

With the development of science, serious problems arise within people's diettoday. 1. It is seriously disproportionate of the three daily meals. We pay more attention to supper while neglecting the most important breakfast. 2. Human's digest system has strict biorhythm, but we always confuse our diet time. 3. In our daily diet, sometimes we absorb excessive nutrition while sometimesless than necessary. 4. Each kind of food has its most proper edible time, but we eat at our pleasure without thinking the time. 5. We always neglect the synergistic effect or reciprocal effect of food. 6. Due to various genes and blood types, each person has the very food most suitable for him to eat.

随着科学的发展，现代人的饮食暴露出严重的问题：1，三餐的比例严重失调，重视晚餐却忽略最重要早餐。2，人类的消化系统有严格的生物节律，而我们的饮食常常时间错位。3，在每一餐中，有的营养过多，有的则过少。4，每种食物在一天中都有最佳的食用时间，我们却想吃就吃。5，食物与食物之间有协同作用和相克作用，这通常是被忽视的。6，人类的各种基因和血型都有最适合它们的食物。

And it has also been the important role of the academic broads, which should research the policies in order to supply the scientific and reliable reasons to the policy reformation. That is where the significant topic selected by this dissertation.

因此，进行政策调整和创新是我国生物多样性保护面临的最紧迫任务，通过政策研究为政策改革提供科学依据也是学术界重要的使命，这也是本文选题的意义之所在。

Science has discovered that our bodies contain white corpuscles and red corpuscles as well as innumerable microorganisms. There are many living things in our bodies.

现在这科学也都知道，每一个人身上都有红血球、白血球，有很多的微生物，很多的生物在身上。

We show that, although the Fenna Matthews Olson protein in natural conditions largely contains bipartite entanglement between dimerized chromophores, a small amount of long-range and multipartite entanglement should exist even at physiological temperatures.

之前的科学结论认为，量子纠缠是一种非常脆弱的状态，很难得到和维持，而研究人员现在证明，量子纠缠能够在一个生物系统中存在并且持续一段时间。

This kind of configuration suits the multi-nucleotide chain's purine pyrimidine alternate area. in 1989, the American scientists with scanning tunnel electron microscope law visual observation double helix DNA double helix DNA ︰ in 1952, Austrian lineage US biology chemist Zha Qiefu (E.chargaff,1905-) have determined in DNA 4 kind of basic group content, the discovery gland fat ling and thymine quantity are equal, the bird fat ling and cytosine quantity is equal.

这种构型适合多核苷酸链的嘌呤嘧啶交替区。1989年，美国科学家用扫描隧道电镜法直接观察到双螺旋DNA 双螺旋DNA︰1952年，奥地利裔美国生物化学家查伽夫（E.chargaff，1905—）测定了DNA中4种碱基的含量，发现其中腺膘呤与胸腺嘧啶的数量相等，鸟膘呤与胞嘧啶的数量相等。

In 2003 Scientific American cited his work on hydrogen production from biomass feedstocks as one of the top 50 breakthroughs of the year.

在2003年&科学美国人&列举他的成果为生物制氢原料之一，在那年突破性的成就中排名前五十。

By combining a case analysis and experiences and lessons from the fire prevention work, the author put forward the development direction and the key improvement of forest fire prevention technology as follows: keep on the studies on weather and situation of forest fire and the short-term, medium-term and long-term fire forecasting, establishing the countrywide forest fire forecasting system step by step, enhancing the biologic fire prevention construction based on forest- prevention web and system, improving the ability of the initial fire obstruction, expanding the forest fire plan, strengthening the management of combustible substances, completing the national satellite network for forest-fire monitoring as soon as possible, speeding up the construction of computer assistance decision system, GIS forest resources geography information system and the GPS world fixed position system, strengthening the fire prevention communication and the extinguishing fire with aviation airplane and chemistry, implementing the modernization of fire machine tool.

结合实例分析及我国森林防火工作的经验和教训，提出了未来我国森林防火技术的发展方向和改进重点：继续努力开展火险天气、火险形势的科学研究和短期、中长期火险预测预报工作，逐步建立全国林火预报系统；加强以防火林带网络和体系建设为主的生物防火建设，提高对初发火的阻隔能力；推广计划火烧，加强可燃物管理；尽快完成全国卫星林火监测网络建设；加快微机辅助决策系统、GIS森林资源地理信息系统和GPS全球定位系统建设的步伐；加强防火通讯；加强航空飞机灭火和化学灭火的力度；实现扑火机具现代化等。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。