活血皇浆对田径运动员血液动力流变学和血液有形成分参数的影响

根据中医内科辩证和因时制宜原则 ,对校田径代表队在夏季比赛期间服用活血皇浆前后进行血液动力流变学和血液有形成分参数的比较观察结果表明 ,运动员服液后在脉率 (PR)、每搏量 (SV)、心输出量 (CO)、左心有效泵力 (VPE)和左心能量有效利用率 (EWK )改善的同时 ,出现心肌耗氧量 (HOV)、心肌耗氧指数 (HOI)、心肌血液需要量 (CMBN)、心肌血液灌注量(CMBV)和总周阻 (TPR)、标准周阻 (SPR)、收缩压 (SP)舒张压 (DP)等参数下降 ,呈现机能和能量节省化 ,而血液状态则表现为血容量 (BV)增多 ,全血粘度 (η)和还原血粘度 (ηr)下降 ,切变应力增高 ,血流速度加快 ,有利于维持微循环正常功能。血液有形成分的改变提示 ,血红蛋白 (Hb)红细胞比积 (HCT)和血小板 (PL T)有增高趋势 ;平均红细胞血红蛋白浓度 (MCHC)下降 ,则有可能与 BV相对增多 ,红细胞 (RBC)体积增大有关     

Simultaneous changes in seed size,oil content and protein content driven by selection of SWEET homologues during soybean domestication

Soybean accounts for more than half of the global production of oilseed and more than a quarter of the protein used globally for human food and animal feed. Soybean domestication involved parallel increases in seed size and oil content, and a concomitant decrease in protein content. However, science has not yet discovered whether these effects were due to selective pressure on a single gene or multiple genes. Here, re-sequencing data from >800 genotypes revealed a strong selection during soybean domestication on GmSWEET10a. The selection of GmSWEET10a conferred simultaneous increases in soybean-seed size and oil content as well as a reduction in the protein content. The result was validated using both near-isogenic lines carrying substitution of haplotype chromosomal segments and transgenic soybeans. Moreover, GmSWEET10b was found to be functionally redundant with its homologue GmSWEET10a and to be undergoing selection in current breeding, leading the the elite allele GmSWEET10b, a potential target for present-day soybean breeding. Both GmSWEET10a and GmSWEET10b were shown to transport sucrose and hexose, contributing to sugar allocation from seed coat to embryo, which consequently determines oil and protein contents and seed size in soybean. We conclude that past selection of optimal GmSWEET10a alleles drove the initial domestication of multiple soybean-seed traits and that targeted selection of the elite allele GmSWEET10b may further improve the yield and seed quality of modern soybean cultivars.     

论农民工教育服务的多边合作供给制——基于制度变迁理论的分析

对农民工教育服务的多机构合作供给实质上就是公共服务领域内的一场制度变迁,即在农民工的教育服务供给领域中引入市场机制,构建多个利益相关者互动的公共服务新秩序,以实现各机构之间功能的互补性贡献。制度需求与制度供给的不平衡是制度变迁的内在动力,本文运用制度变化的需求与供给分析框架,探究我国农民工教育服务实现多边合作供给过程中的各种要素,提出了相应的制度设计方案。     

Miwa问题的注记

本文给一反例说明Ｍｉｗａ问题的解答中的两个条件是相互独立的．     

抗战时期后方地区大中型企业的兴起与发展

抗日战争时期,基于持久抗战的需要,通过厂矿内迁、原有企业扩充与合并、新建企业的 发展等途径,在后方地区涌现了一批引人注意的大中型企业。这些大中型企业是后方企业的核心和骨 干力量,具有较高的企业管理水平,在地域分布上相当集中,在产业结构上重工业、基本工业占较高比 重,在资本结构上国营、公营资本占据优势地位。同时与战前沿海大中型企业相比,后方大中型企业的 规模和生产能力有限,而历史作用巨大。     

生态社会主义简论

生态社会主义是当代西方"新社会运动"的主要组成部分。作为一种新兴的社会主义思潮和理论,它的发展大致经历了三个阶段。虽然尚未完全形成系统的体系,但其所提出的观点和主张在许多方面还是具有一定的价值,为世界社会主义运动增添了新的内容,也为我们思考当代社会主义问题提供了有益的启示。     

论英语节奏

阐述了英语节奏的特点，论述了英语节奏与词重音、句重音、重音规整性，音长、元音的音质、语调和语言的可理解性三者之间的相互关系和影响。提出了掌握英语节奏的正确方法。     

探析英语专业视听说教学中文化导入的重要性

语言从深层次反映一个民族的文化特点,要学好一个民族的语言,必须学习该民族的文化。因此,在英语视听说教学中,教师既要重视语言知识的传授,又要注重文化知识的传授。从语言与文化的关系、英语视听说教学导入文化的重要性等方面作一探析,同时给出了一些提高学生跨文化意识的对策。     

生态视角下网络教学资源的开发

面对网络教学资源相对陈旧、种类单调,资源的重复建设现象严重的情况,可以将网络教学资源、网络环境、开发人员、学习者作为一个生态系统,从生态学的视角出发,运用生态理论来研究网络教学资源建设过程中的问题,指导开发优质网络教学资源,创建远程学习的生态学习环境。     

Static analysis of synchronism deployable antenna

INTRODUCTION Large antennas for space applications have some differences as compared to their counterparts de-signed and manufactured for ground usage. For a larger space antenna, the applied loads in space can be several orders of magnitude less than the gravity loading it is subjected to when being fabricated and assembled on the ground. Since the effect of gravity cannot be removed from any experimental verifica-tion performed on the ground, we must rely on the use of efficient and hig…