吃得太好成了“三高”患者 峨眉山藏猕猴集体“减肥”

世界文化和自然双遗产地峨眉山上生活着1200多只藏猕猴。因为来自世界各地的观光客太喜欢它们．喂它们各种美食。没有节制、没有合理搭配的各种零食使得这群猴子的体态日渐臃肿．而且还成了高血压、高血脂，高血糖“三高”患者。     

土豆烧牛肉吃起来科学吗？

生活中，有些食物的搭配组合已经是由来已久，其美妙的口味也被人们所接受，习惯上也觉得这些种搭配是顺理成章的了。但从健康的角度来讲，还是不科学的。这里给你您列出几种被健康专家列为错误的菜肴搭配。     

Species richness,diversity and density of understory vegetation along disturbance gradients in the Himalayan conifer forest

We investigated whether species richness, diversity and density of understory herbaceous plants differed along logging(gap) and grazing(primarily by cattle) disturbance gradients, and sought to identify drivers of richness, diversity and density of understory vegetation of logged sites. A factorial experiment was conducted in the mixed conifer forest of Gidakom in Western Bhutan. Levels of the logging treatment included small(0.15 – 0.24 ha), medium(0.25 – 0.35 ha) and large(0.36 – 1.31 ha) gaps. The grazing treatment included grazed(primarily by cattle) and ungrazed(where herbivores were excluded by a fence) plots nested within each gap. Data were collected from 12 gaps(4 replicates at each level of logging) using the point intercept method. Shannon Weaver Diversity and Margalef's indices were used to estimate species diversity and describe species richness, respectively. Soil samples were analyzed for pH and nutrients. The interaction effect of logging and grazing was significant(p≤0.001) only on species diversity. Relative to ungrazed areas, species diversity was significantly higher(0.01≤p≤0.05) in medium grazed gaps. Under grazed conditions, soil P was negatively correlated with gap size and species diversity. While species diversity was positivelycorrelated(0.01≤p≤0.05) with soil N in grazed plots species richness was positively correlated(0.001≤p≤0.01) with soil N in ungrazed plots. Relative density of Yushania microphylla and Carex nubigena were higher under ungrazed conditions. Our study suggests that the combined effect of cattle grazing and logging results in higher species diversity of understory vegetation in medium and grazed gaps in mixed conifer forests of Bhutan,whereas increase or decrease in relative density of major species is determined primarily by the independent effects of grazing and logging. From management perspective, forest managers must refrain from creating large gaps to avoid loss of nutrients(mainly P and N), which may eventually affect tree regeneration. Managers intending to maintain understory vegetation diversity must consider the combined effects of grazing and logging, ensuring low to moderate grazing pressure.     

鱼类体色成因及调控研究进展

<正>随着经济的快速发展和生活水平的不断提高,人们对高档鱼类的需求也日益增加。受自然条件的限制和人为因素的影响,野生鱼类捕获量在急剧下降,为解决供需矛盾,水产养殖业应运而生,但在高密度集约化养殖条件下,人工养殖的鱼类,其体色异常和肉质下降等问题频频出现,远不如野生品种。发生体色异常的鱼类以前是无鳞鱼,如黄鳝(Monopterus albus)、黄颡鱼(Pelteobagrus fulvidraco),     

中加矿产资源法律制度的比较分析

矿产资源是社会发展的重要物质基础。我国是世界上矿产资源品种比较齐全、储量相对丰富的少数几个国家之一。中国和加拿大都是世界上的资源大国,通过比较两国矿业活动的申请程序、矿业权期限、矿业权转让、矿业活动的监督管理制度以及矿产资源补偿制度,可以为我国相关法律制度的完善提供借鉴。经济     

农用矿物对提高大豆产量及品质的贡献研究

黑龙江省是大豆主产区，大豆的产量和品质一直处于全国领先地位。农用矿产资源的开发与利用，可以为大豆的种植增添新的肥料品种，有助于黑龙江省绿色农业的发展。实现农业矿产资源的高效利用，对黑龙江省保持在全国的农业强省地位具有积极的促进作用。     

基于语料库的中国大学生动/名词搭配研究

采用中国学习者语料库（CLEC）和本族语语料库（Brown和LOB语料库）中的真实语料，对中国大学生的动词／名词搭配使用行为进行研究。针对同一名词或动词的搭配词，中国学习者的搭配词与本族语者的搭配词差异极大，甚至有些搭配词在本族语者的语料中从未出现过。进一步分析表明，中国学习者的搭配词选择很大程度受到该词在母语（汉语）中搭配词的影响。     

我国9种养殖对虾形态特征之比较

本文对我国养殖的9地虾主要形态特征作了简要的描述，并根据它们的不同特征把这9种对虾分成4个组：即中国对虾组、斑节对虾组、日本对虾组和内对虾组。对各组间和组内不同种类对虾的形态特征作了比较，并根据它们不同的形态特征编出检索表，以便于生产上应用。     

振兴河南省矿泉水之我见

河南矿泉水的发展之路。 河南省的矿泉水类型，从目前看主要分为三大类： 一是含锶型矿泉水。主要储水类型为碳酸盐岩裂隙水和松散岩类孔隙水。前者水化学类型一般为HCO3ˉ—Ca型或HCO3ˉ—Ca.Mg型，钠含量较低，溶解性总固体含量在500mg/L左右，分布于河南省大部分地区，范围较广；后者水化学类型一般为HCO3ˉ—Ca型，钠含量稍高，溶解性总固体含量在600mg/L左右，主要分布在黄河冲积平原，以500米以上的中深层井水为主。 二是含锶和偏硅酸复合型矿泉水。主要储水类性为松散岩类孔隙水和片麻岩、石英岩、花岗岩裂隙水。前者水…     

＋20号农用柴油在渔船上使用的研究

发动机对燃油性能的差别一般是敏感的，故大多数发动机设计时已考虑用规定品种的燃油。喷射设备的选择和工作也取决于燃油的物理和化学性能。