女性运动员进食障碍研究综述

进食障碍是女性运动员"三联征"之一,对运动员危害极大.通过文献资料调研,综述了近年来国内外关于女性运动员进食障碍病因、临床类型、诊断、处理与防治等方面的研究进展,为进一步研究提供参考依据.     

基于阅读习惯变化的西部地区数字图书馆建设与服务研究——以吉首大学图书馆为例

描述了西部地区读者阅读习惯的变化,阐述了以吉首大学图书馆为中心来构建数字图书馆的具体内容,提出了数字化环境下图书馆的服务措施。     

棕色田鼠食性食量的研究

用人工室内饲养和野外实地观察的方法，对棕色田鼠的食性食量进行了初步研究．结果表明，棕色田鼠啃食多种农作物和大部分田间杂草，约有 １６ 个科近 ４０ 种．棕色田鼠日食量平均为 ３１８４ ｇ，对某种食物日食量存在着明显的季节变化．日食量与体重呈正相关，且同一年龄组（除幼体组外）的雌性鼠比雄性鼠平均日食指数高     

抗冻（糖）蛋白聚合吸收模型（部分二）：热滞的定量结果和生长速率

分析了抗冻溶液中冰晶界面层的特性，给出了热滞的定理结果，定量计算了冰晶生速率，解释了抗蛋白溶液中冰晶生长的各向异性特点和生长速率，这些结果与实验数据很好地符合。     

3种华枝虫(Sinophasma spp.)的化学防治简报

为防治近年来经常爆发危害的食叶害虫斑腿华枝虫（ＳｉｎｏｐｈａｓｍａｍａｃｕｌｉｃｒｕｒａｌｉｓＣｈｅｎ）、广华枝虫（Ｓ．ｌａｒｇｕｍＣｈｅｎｅｔＣｈｅｎ）和拟异尾华枝虫（Ｓ．ｐｓｅｕｄｏｍｉｒａｂｉｌｅＣｈｅｎｅｔＣｈｅｎ）,采用５０％甲胺磷ＥＣ（４０００×,２０００×,１０００×,５００×,２５０×）、４０％水胺硫磷ＥＣ（８０００×,４０００×,２０００×,１０００×,５００×）、４０％乐果ＥＣ（８０００×,４０００×,２０００×,１０００×,５００×）和２．５％敌杀死ＥＣ（８０００×,４０００×,２０００×,１０００×,５００×）进行室内浸叶法试验,清水作对照,用２．５％敌杀死粉剂进行田间试验。室内试验结果表明,２０００×～１０００×浓度的５０％甲胺磷和４０％水胺硫磷防效分别达到９１．５％以上和９４．３％以上。４０００×～２０００×浓度的４０％乐果和２．５％敌杀死ＥＣ防效分别达到９４．２％和９４．３％以上。四种农药均对华枝虫有较好的防效,它们之间的防效差异不显著。田间喷施１％的２．５％敌杀死粉剂,２ｈ后防效达５０％～７０％,２４ｈ后防效达９５％以上。     

图牧吉自然保护区大鸨繁殖期种群数量动态和食性分析

对栖息在内蒙古图牧吉自然保护区的大鸨繁殖期种群数量动态和食性进行了分析研究.结果表明:大鸨每年3月初4月底迁来图牧吉,10月下旬离去,停留期长达7个月,繁殖期4-7月;窝卵数2～5枚,孵化期30 d左右,10日龄幼鸨成活率29%.大鸨喜栖息在原草开阔地,是一种杂食性鸟类,在繁殖期取食一些昆虫等动物性食物,但以植物性食物为主.     

The Benefits of Developing Habits of Mind to English Learners

In ordinary human life,something can be two different things at the same time.Habit can also be a theory and a solution.In this thesis I will introduce the reasons why we should develop habits of mind and the benefits to English learners.In this way English learners can master some better learning methods and scientific habits of mind to direct and improve their English learning     

Phylogeny and life habits of Early Arthropods-Predation in the Early Cambrian Sea

We investigated two new arthropods from the Maotianshan-Shale fauna of southern China in the course of our research on life strategies, particularly predation, in Early Cambrian marine macrofaunal biota. One form clearly belongs to the so-called "great-appendage" arthropods, animals that were, most likely, active predators catching prey with their first pair of large, specialized frontoventral appendages. Based on this, we hypothesize that the new species and many others, if not all, of the "great-appendage" arthropods were derivatives of the chelicerate stem lineage and not forms having branched off at different nodes along the evolutionary lineage of the Arthropoda. Rather, we consider the "great-appendage" arthropods as belonging to a monophyletic clade, which modified autapomorphically their first pair of appendages (antennae in general arthropod terminology) into raptorial organs for food capture. The second new form resembles another Maotianshan-Shale arthropod, Fuxianhuia protensa, in sharing a head made of only two separate segments, a small segment bearing oval eyes laterally, and another bearing a large tergite, which forms a wide shield freely overhanging the subsequent narrow trunk segments. This segment bears a single pair of rather short anteriorly directed uniramous appendages, considered as the "still" limb-shaped antennae. Particularly the evolutionary status of head and limbs of these two forms suggests that both are representatives of the early part of the stem lineage toward the crown-group of Arthropoda, the Euarthropoda. These forms appear rather unspecialized, but may have been but simple predators. This adds to our hypothesis that predation was a common, if not dominant feeding strategy in the Cambrian, at least for arthropods.     

虎纹蛙的食性与捕食行为的研究

通过养殖试验与野外观察相结合，研究了虎纹蛙（Hoplobatrachus rugulosa）的蝌蚪与成体的食性及捕食行为。结果表明，虎纹蛙是一种性凶猛的蛙类，喜食活的动物性食物，并具有互相残食的习性；在一定条件下，可取食不活动的食物；其捕食行为依蛙体与食物的相对位置而变化。