未加强的

A detail comparison demonstrates that such preconditioned IbpB is distinguished from the non-preconditioned IbpB by a remarkable conformational transformation, including a significant increase in the flexibility of the N- and C-terminal regions, as well as enhanced dynamic subunit dissociation/reassociation.

我们的比较研究表明，这样的经过热休克预处理过的 IbpB蛋白与未经历过热休克条件的蛋白之间存在很大的构象上的差异，包括前者在N-和C-末端区域可曲性的明显增强，以及亚基动态分离/重结合的加强。

But programs set, time of course, amount of curriculum, teaching condition, and teaching form are still insufficient.4The reasons why other universities and colleges do not set elective physical education course are mainly due to leaders" consciousness, quantity and quality of physical education teachers, the field and equipment.5The reform and development of elective physical education course in universities and colleges should incarnate the guideline "health first. people oriented". Teaching content should be pertinent, scientific, arranged, and systematic, so as to build up a teaching content system combined theory, skills and abilities. Set programs on base of students" choice, at the same time, give attention to the requirement of social development and students" interest, and make differential treatment according to gender. The classroom teaching should be sportful, joyful, and successful. The organizing of course could be mutual choice, compensating service, both in and out classroom. The score could be graded synthetically assess knowledge, innovation, and effect.6Strengthening the management to elective physical education course, improving teachers" comprehensive quality, making full use of fields and stadiums are all supporting conditions for the development of elective physical education course.

但是开设的项目、开课的时间、教学时数、教学条件、教学组织形式还难以满足学生学习和掌握知识和技能的需要。4、未开设公共体育选修课的高校其主要原因与领导的认识程度、体育教师的数量和质量、体育场地器材等有关。5、高校公共体育选修课的改革发展应体现&健康第一、以人为本&的指导思想：教学内容突出针对性、科学性、层次性、系统性，构建理论、运动技能、能力培养相结合的内容结构体系；运动项目设置以大学生对体育的选择性为基本前提，同时兼顾社会发展的需要和学生兴趣的需要，注重性别差异与因材施教；教学方法力求教懂、教会，体现课堂教学的娱乐性、快乐感和成功的喜悦：教学组织实施双项选择、有偿服务、课内课外相结合等多种形式；学习成绩实施知识+创新+效果的综合考核评价方法。6、加强公共体育选修课动态管理，提高教师综合素质，挖掘现有体育场馆设施的潜力，充分提高利用率是公共体育选修课改革发展的基本保障条件。

The instruments the author used in the experiment are literature review, interviews, questionnaires and case study. Start from the point of view of strengthening amateur sportsmen's training method in view of the 400-meters sportsmen who haven't reached level 2 target in school PE teaching and amateur training according to the successful experience and long time of practice of some qualified 400 meters trainers and some out standing PE teachers as well as the accumulation of the related literature review the author construct theoretically the model of training 400 meters male dash with the target of improving the speed of 400 meters dash. That is to say from the following 4 aspics, speed index,speed endurance index,aerobic endurance index,strength index.Listing the relative theory of mode training by analyzing and comparing the results got by the subjects both before and after the experiment the author tries to find out a suitable final index mode for specific training .

本文运用文献资料法、访谈法、问卷调查和实验等方法，从重视基层业余水平田径运动员的训练、加强对业余水平运动员训练方法的研究为出发点，针对学校体育教学及业余训练中水平一般且未达到国家二级锻炼标准的400m跑运动员，依据国内400m跑专项高水平教练员、优秀体育教师多年训练实践的成功经验以及相关文献资料的积累，以影响400m跑专项成绩提高的主要内容指标，即速度指标、速度耐力指标、有氧耐力指标以及力量指标四个方面为切入点，从理论上初步对男子400m跑二级运动员专项训练的指标模式进行构建，并运用模式训练相关理论原理，通过实验前、后运动员成绩的对比分析，寻求符合其专项训练的最终指标模式。

Indoor air sources of formaldehyde are mainly in the following aspects : 1, the plywood used for interior decoration, Ximugongban, medium density fibreboard and shaving board, and other artificial plate because formaldehyde has strong sexual bond, has strengthened plate and the hardness control, corrosion functions, Therefore, the current production of imitation board use Jiaonianji merits to formaldehyde as the main ingredients thiourea aldehyde resins, plate, residual and did not participate in the response formaldehyde will gradually release of the surrounding environment is a indoor air formaldehyde main ;2, using imitation board manufacturing furniture, some manufacturers in the pursuit of profit, the use of unqualified plate. In preliminary front face material reuse inferior glue, the manufacturing processes are not standardized, as a result of customers buying home, to buy a small emission points ;3, containing formaldehyde content and may distribute to the outside other categories decorative materials, such as stickers Qiangbu, with wallpapers, chemical fiber carpet, foam, paint and paint, etc.;4, combustion, emit formaldehyde certain materials, such as cigarettes and some organic materials.

室内空气中的甲醛来源主要有以下几个方面：1、用作室内装饰的胶合板、细木工板、中密度纤维板和刨花板等人造板材，因为甲醛具有较强的粘合性，还具有加强板材的硬度及防虫、防腐的功能，所以目前生产人造板使用的胶粘剂是非曲直以甲醛为主要成分的脲醛树脂，板材中残留的和未参与反应的甲醛会逐渐向周围环境释放，是形成室内空气中甲醛的主体；2、用人造板制造的家具，一些厂家为了追求利润，使用不合格的板材，在粘接贴面材料时再使用劣质胶水，制造工艺不规范，结果顾客买回家去，等于买回了一个小型废气排放站；3、含有甲醛成分并有可能向外界散发的其他各类装饰材料，比如贴墙布，贴墙纸，化纤地毯、泡沫塑料、油漆和涂料等；4、燃烧后会散发甲醛的某些材料，比如香烟及一些有机材料。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。