中西药结合与手术剥离治疗母牛产后胎衣不下

<正>胎衣不下是怀孕母牛产后常见病之一,多因怀孕后期缺乏运动,营养不良,饲草饲料品种单一,品质低劣,缺乏钙、盐、维生素、矿物质及其它微量元素。或因怀孕母牛年龄过大,体质瘦弱,对营养物质的吸收功能差,随着胎儿的日益增长和对养分的需求加大,导致母牛在产后体能消耗较大,子宫迟缓收缩无力,胎衣附着在子宫壁上12h内不能自行排除,也有的因早产,车祸、跌伤、碰撞、打斗、中毒、使役过度或其他原因导致流产均可引起胎衣不下。笔     

一例牛前胃驰缓的诊治报告

正前胃驰缓,是因为前胃兴奋性降低,收缩力减弱,瘤胃内容物运转缓慢,菌群失调,引起消化的障碍以及全身机能紊乱的一种疾病。本病是奶牛、耕牛、肉牛、和骆驼一种多发病,特别是舍饲牛更为常见。1发病情况2015年12月30日,普兰店市夹河镇双泉寺村张某电话求诊,他家养了5头牛,5头牛出现了食欲减退、消失、反     

牛肉的收缩包装

正采用收缩包装的一个主要原因,是防止肉类在解冻时出现肉汁流失的情况。将产品真空包装密封后放人热水中80~82℃,保持1~2s,使塑料袋收缩。塑料袋薄膜收缩成肉块原有的外形,成为肉的第二层皮。收缩能消除包装薄膜出现皱纹或裂隙的情况,避免发生水分从产品抽出的毛细管现象。此外,不紧贴产品的包装塑料愈少在运送产品时包装愈不容易破裂值得一提的是基于收缩作用阻隔塑料袋膜的厚度因此增     

鸡胚肺动脉内皮细胞与平滑肌细胞的分离培养及鉴定

探索简单快速实用的鸡胚肺动脉内皮细胞和平滑肌细胞培养方法:在严格无菌条件下对肺动脉内皮细胞和平滑肌细胞分离培养,待细胞融合度达约80%时进行传代,得到的内皮细胞利用差速消化法纯化,并观察2种细胞形态特征及培养特性,待细胞稳定生长后,采用荧光免疫组化技术鉴定细胞,并进行冻存和复苏,观察复苏后细胞活性。结果显示:24 h后组织块周围即有少量细胞爬出,内皮细胞大量生长后呈突起状排列,立体感强,平滑肌细胞在培养后的第5天呈现峰谷样外观,经免疫荧光法证明是内皮细胞和平滑肌细胞的纯培养,冻存于液氮中1~2个月复苏后细胞的活性都较好,可以恢复旺盛生长。结论:本研究提出的组织贴块法能成功获得内皮细胞和平滑肌细胞的纯培养,比酶消化法操作简单,更适合小血管内皮细胞、平滑肌细胞的原代培养。     

西部农村人口对资源环境的压力及农村人口转移方向

从人口经济密度、乡村人口控制、生态适度人口与现实人口密度之比和农业人口比重等4个方面入手,分析了西部农村人口对资源环境的压力,认为由政府主导实施西部农村人口向江河湖库灌区收缩和分层次向农村城镇转移战略,是减轻西部资源环境压力和农村人口致富的最好方案。     

补偿收缩混凝土及其在水利工程中的应用研究

用明矾石，硬石膏按一定比例经磨细混合均匀后生产混凝土膨胀剂，或与普通水泥生产补偿收缩水泥。对膨胀剂中的ＳＯ３，Ａｌ２Ｏ３及细度的控制，可以控制所配制的补偿收缩混凝土的自由膨胀值，自应力值和稳定期。将其用于水利工程中大体积混凝土浇注，高抗渗混凝土，不裂或少裂混凝土的配制及工具有良好的效果。     

果中佳品——红枣

红枣的价值 红枣亦果亦药,历来深受人们的钟爱,被列为“五果之王”。 红枣富含维生素C．每100克鲜枣中含量高达400～600毫克．冠于百果之首．故红枣有“天然维生素丸”之称。除维生素C外,还含有胡萝卜素、核黄素、钙、磷、铁等营养素。红枣有促进肝脏合成白蛋白功能,调整白蛋白、球蛋白比例。所以,红枣适宜慢性肝炎．肝硬化之人服食。也可减少其他药物对肝脏的损害。红枣中含环磷酸腺甙。可扩张血管,增强心肌收缩力,改善心肌营养．对防治心血管疾病有一定好处。     

红枣气体射流冲击干燥收缩特性研究

Chinese jujube originated in China and has a long historical standing. China is the only country which can produce a great amount of Chinese jujube in the world. Modern research showed that the nutrition of Chinese jujube is abundant. Chinese jujube has great medicinal and food value, with high economic value and good prospects for development. Shrinkage characteristics of dates generally refer to volume shrinkage characteristics of whole dates. Large fruit and plump grain appearance of dates is the first choice of consumers to buy elements. The volume of dried jujube points to the consumer’s heart, and is an important indicator of consumers whether to buy. Jujube processing enterprises grade the date in accordance with its size, different grades dates have different value and price. Therefore, drying is the most important steps during the dates processing as it affects directly the quality of the product, and the shrinkage characteristics is the most important quality characteristic of Chinese jujube after drying. However, the traditional natural desiccation and desiccation in the drying room of the red dates has many problems. The conventional drying method for Chinese jujube has some disadvantages of severe shrinkage, long drying time and large energy consumption etc. Therefore, in order to improve the quality of dried Chinese jujube and reduce the shrinkage, it is imperative to replace the traditional drying method with the modern technologies. Air impingement drying technology was applied to dry Chinese jujube. The drying characteristics of shrinkage, moisture effective diffusivity considering shrinkage characteristics and the activation energy of Chinese jujube shrinkage were investigated under different air temperatures (55, 60, 65 and 70℃) and air velocities (6, 9, 12 and 15m/s). The dynamic changes of the regular pattern for the shrinkage characteristic of Chinese jujube in the air impingement drying process were studied, the results showed that the volume relative shrinkage ratio of Chinese jujube appeared to increase and then decrease with the increase of air temperature and air velocity. Considering shrinkage characteristics, the moisture effective diffusivity of Chinese jujube in the air impingement drying process through the Fick’s second law was obtained. The diffusivity appeared to increase and then decrease with the decrease in moisture content in dry basis of Chinese jujube. The Arrhenius equation calculated the shrinkage activation energy of the Chinese jujube was 1281kJ/mol. This research provided technical basis for shrinkage characteristics of Chinese jujube using air impingement drying technology.     

胆囊收缩素及其受体的特点和分布

胆囊收缩素(cholecystokinin，CCK)是一种由胃肠道粘膜I细胞分泌的多肽激素，具有能收缩胆囊和刺激胰酶分泌；增强胰酶活性，刺激胃肠肌肉(Cameron et al，1970)；促进远端十二指肠和空肠的蠕动；促进胃酸、胰液的分泌以及抑制摄食行为等功能。     

防止和减少焊接变形的措施

手工电弧焊是通过放电电弧所产生的热量,使焊件的接头处局部加热到熔化状态,使焊件达到原子结合。这种对焊件进行局部的不均匀的加热,是焊件产生变形的根本原因。 一、焊接变形是多种多样的,但最常见的有以下几种基本形式 1.收缩变形 构件焊接后,纵向和横向尺寸缩短,这是由于焊缝纵向和横向收缩所引起的。 2.角变形 V形坡口对接焊时,由于焊缝截面形状上下不对称,焊后收缩不匀而引起角变