Acrosin activity in spermatozoa of infertile Nigerian males

The objective of this study was to evaluate acrosin activity in spermatozoa of infertile Nigerian men and to compare with those of the fertile men. The acrosin activity was evaluated using the Acroscreen reagent kit. The acrosin activity of the fertile men was 40.7±5.2 mIU/10⁶ sperm (range 30.1–51.3) and those of the infertile men was 22.4±8.33 mIU/10⁶ sperm (range 5.7–39.1). The difference in the mean was statistically significant (P<0.001). There was a subpopulation of the infertile men who had their acrosin activity within normal range of the fertile men, 32.9±1.57 mIU/10⁶ sperm. But the difference in the mean was statistically significant (P<0.001). Acrosin activity decreased with increased morphological changes in the spermatozoa. It is concluded that acrosin activity in the infertile Nigerian men is significantly lower than that in the fertile men. Acrosin activity may also be affected by morphological changes in the spermatozoa.     

密苏里同伴关系问卷在中国未成年犯中的信效度检验

采用分层随机抽样原则对257名男性未成年犯进行问卷调查,结果表明：修订后的问卷只包括因素一情感维系度和因素二攻击性,总的信度为0.7351。验证性因素分析的结果为χ2/df=4.42,NFI=0.81,CFI=0.86,RSMEA=0.00。中文版的《密苏里同伴关系问卷》有良好的信度和效度,可用于未成年人犯罪同伴关系的研究。     

How gender is constructed and experienced in the social world of the nursery school

This case study attempts to capture the way gender is constructed and experienced in the social world of the nursery school. It presents findings from a staff survey, structured and unstructured observations of one male’s and one female’s professional practice and one-to-one interviews with children aged three to four years. Despite practitioners’ reported intentions to challenge traditional notions of gender, construction of traditional gender distinctions was not problematised by staff and was upheld by comments of children. Children appeared to construct themselves in terms of gender stereotypes and were offered only limited alternative gender positions by the male and female practitioners.     

The Eton Montem custom c. 1750–1844: privilege,pageantry and sanctioned misrule

Montem, a triennial customary march by Eton scholars, consolidated into a public expression of patrician social identity under the patronage of the monarchy in the late eighteenth century. This analysis of Montem’s history traces its development from a boy-led pageant of misrule to a public performance of elite patriotism. The custom, which attracted national attention, sheds new light on boy governance and self-fashioning in the period’s elite schools. This article argues that a study of Montem disrupts the standard historiographical narrative of anarchy and violence in the great schools and suggests that boy culture was more complex than previously acknowledged.     

客赣方言"名词+雌/雄语素"结构不表雌雄现象探析

“名词语素 雌/雄语素”却不构成表雌雄性别的名词,这一现象在客赣方言里普遍存在。究其原因,这些雌雄语素本来自于指人的名词,有实词意义,与名词语素组合为新词后,起初仍保留实词意义,后来逐渐虚化为标志性语素了。这类词语从一开始并不表示雌雄,但是命名之初,雌雄语素的选择体现了人们把性别意识迁移于其他事物的特殊文化心理。     

辣椒质-核互作雄性不育与叶、蕾中内源激素含量的关系

利用间接酶联免疫法(ELISA)测定辣椒质核互作雄性不育三系叶、蕾中IAA、CTKs、GA1+3和ABA的含量.结果表明:在叶、蕾中各种内源激素水平三系之间有明显的差异.在三系之间不育系叶、蕾中IAA的含量明显增高;叶片中CTKs的含量不育系最高,而在花蕾中其含量最低;在花蕾中不育系GA1+3的含量明显最高;ABA的含量三系之间差异相对较小.进定步分析表明;花蕾中各种激素水平的比例平衡与辣椒雄性不育有着更密切的关系.     

基于HHD测试的男子羽毛球运动员肩关节旋转特征分析

目的:通过观察男子羽毛球运动员肩关节旋转活动度及肌力的特征,为羽毛球运动员肩关节损伤的预防和康复提供参考。方法:以16名专业羽毛球男子运动员为受试对象,同时以9名普通男子为对照,使用手持式测力计(HHD)测定优势侧及非优势侧肩关节的旋内、旋外肌力;同时,测量其旋转被动活动度。结果:(1)男子羽毛球运动员肩关节旋外被动活动度大于旋内被动活动度。(2)男子羽毛球运动员肩关节优势侧旋内、旋外肌力均大于非优势侧,但旋外/旋内比例不存在双侧差异。结论:(1)男子羽毛球运动员肩关节旋转活动度存在双侧差异。(2)男子羽毛球运动员优势侧肩关节旋内、旋外肌力均大于非优势侧。     

两种方式的健步走对边缘性血脂升高的中年男性血脂及肺通气功能的研究

摘要：目的：探讨2种方式的健步走对边缘性血脂升高中年男性脑力劳动者血脂及肺功能的影响。方法：选取西安市3所高校从事脑力劳动的科研工作者,筛选出符合（血脂水平分层标准）边缘性血脂升高标准的受试者48人,随机分成匀速组和变速组各24人,实施为期12周的健步走。2组采用的运动强度为,匀速组在第二和第三个10～15 min以60﹪～70﹪HRmax为主,变速组以60﹪～70﹪HRmax和70﹪～80﹪HRmax为主,每周4次,每次40～60 min。重点监测受试者运动前、运动4周、运动12周的血脂六项（TC、TG、HDL-C、LDL-C、Apoa1/Apob）和肺通气功能指标（VC、FVC、FEV1/FVC﹪、MVV、VC/Kg）。结果：1）与运动前比较,运动6周,匀速组血脂及肺通气功能各指标无显著性变化（p>0.05）;变速组TC显著降低（p＜0.05）,FEV1/FVC﹪、MVV、VC/Kg显著升高（p＜0.05）。运动12周,匀速组TC、TG显著降低（p＜0.05）,FEV1/FVC﹪、MVV、VC/Kg显著增高（p＜0.05）;变速组血脂各指标（除Apoa1/Apob外）和肺功能指标（除FVC外）均有显著差异（p＜0.01或p＜0.05）。2）组间比较：运动6周,两组血脂与肺功能各指标无显著性差异（p>0.05）。运动12周,具有显著性差异（p＜0.05）的指标为HDL-C、LDL-C、MVV。3)在不同的运动周期,血脂和肺功能指标的变化幅度均有显著性变化,运动12周明显优于运动6周,变速组变化幅度优于匀速组。结论：1)匀速健步走运动12周,具有明显的调脂效果和提高肺通气功能;变速健步走运动6周,对血脂异常和肺通气功能有显著的改善。运动12周,调脂效果非常显著基本回归正常范围,肺功能显著提高。2)2种方式的健步走,强度较高的变速运动对血脂异常的调脂效果和肺通气功能的提高显著优于匀速运动。     

CUBA男子篮球运动员身体素质测试结果分析

运用问卷调查、定量测试等方法,对8支CUBA男子篮球运动员各项身体素质指标进行了测试。发现后卫、前锋、中锋不同位置队员在速度、柔韧和下肢力量的差异不具有显著性意义;仰卧起坐、弹跳和速度耐力三项中,三种位置队员间的差异都具有非常显著性意义;灵敏素质、一般耐力素质方面,各位置队员问的差异都具有显著性意义。     

中国男排非受迫性失误状况诊断及对策研究

根据排球比赛的制胜规律,首次提出排球比赛中“运动队非受迫性失误”的概念,并研究开发了其13项二级指标。运用这一理论对中国男排;006年参加的12场世界大赛的参赛录像进行统计分析,发现在发球失分、第二次击球过网、双人或三人拦强攻失分这3项指标方面,中国男排与对手国存在显著差异,其现状亟待改善。