浅议交互式课堂教学模式

交互式教学改变了传统的英语教学模式,通过教师、学生、课堂、环境等的信息交流、活动交往、位置交换来进行教学,这种教学模式有利于调动学生学习语言的积极性、主动性和创造性,提高学生的语言表达能力.通过对交互式教学模式的原则、优点、方法的分析,以及在英语教学中的尝试,提出在高职高专英语教学中采用这一教学模式具有重要意义.     

警犬技术互助式教学模式

一、互助式教学模式的由来 互助就是互相帮助、互相协作.互助式教学模式指的是在教学过程中充分调动学生的竞争性,鼓励激发学生发展群体意识,积极与他人协作、互助.互助式教学模式的前提是要培养学生们的竞争意识.     

混合式教学模式在公安信息管理学实训教学中的应用

随着大规模在线开放课程在全球的迅速兴起,给传统高等教育教学带来巨大影响,以往的教学模式很难满足新时代高校教育的要求.为提升学生的学习质量,培养学生运用公安信息管理知识解决实际问题的能力,进一步完善公安信息管理学课程的实训教学,课题组研究和实践了新型实训教学模式,将价值塑造、能力培养、知识传授三位一体.从混合式教学模式产...     

学生视角下的线上线下混合教学模式质量评价

学生是线上线下混合教学模式的实施对象,学习效果的提升是实施混合教学模式的最终目标.本文以重庆建筑科技职业学院的学生为研究对象,对实施线上线下教学的学生进行调查研究,从学生的角度来对线上线下混合教学质量进行评价.     

案例教学模式在《小动物内科学》教学中的探索与实践

案例教学模式是一种新兴教学模式,通常应用于临床实践较多的学科,《小动物内科学》是一门综合应用型学科,要求理论与实践并重,将案例教学模式引进《小动物内科学》课程教学中,能够调动学生积极性、提升学生创新能力、锻炼学生分析和解决问题的能力、提高学生自主思考的能力及增强他们将理论知识应用于实践的能力.对《小动物内科学》教学存在...     

日语听力课教学模式与培养策略研究

日语听力课在日语教学中的重要性日益突出,可是,学生目前的听力水平却不客乐观.这与传统的封闭式教学模式和对听力课的片面认识有很大关系.本文从实践出发,对日语听力课教学模式及培养策略提出了一些建议,希望能够有效提高学生的听解能力.     

地理信息系统原理课程研讨式教学模式研究

为全面培养学生综合能力,在地理信息系统原理课程中采用研讨式教学模式.针对研讨式教学目标、教学内容、教学模式及研讨选题设计进行研究,并探讨两种研讨式教学模式实施过程,旨在培养学生自主学习、独立思考、积极探索、勇于创新的能力.     

基于任务驱动课程教学模式的构建与实践

"任务驱动"是一种建立在建构主义教学理论基础上的教学法.文章结合学生和教材的特点,探索在电工电子技术教学中采用任务驱动的教学模式的可行性,并结合具体的教学案例探讨了其在培养学生兴趣、增强学生主动意识、动手实践能力方面的优越性.     

基于雨课堂的兽医内科学教学改革与实践

雨课堂是新型信息化教学工具,改变了原有课程教学模式,有利于教学质量的提高.为提高兽医内科学课程的教学效果,进行了该课程教学模式的探索,通过基于雨课堂的教学模式的实践,弥补了传统课堂教学的不足,增强了课前、课中、课后师生之间的相互交流,提高了学生学习的主动性、参与度和积极性,促进了教师教学能力的提升,从而提高了课程的教学...     

PBL与情景式教学相结合的教学模式在家畜环境卫生学课程中的应用效果

吉林农业科技学院动物科技学院的动物医学专业近几年一直采用PBL与情景式教学相结合的教学模式,取得了良好的效果。为验证PBL与情景式教学相结合的教学模式在家畜环境卫生学课程中的应用效果,分别将PBL与情景式教学相结合的教学模式与传统教学模式应用于家畜环境卫生学课程教学中,进行了教学效果比较分析。结果表明:PBL与情景式教学相结合的教学模式满意度显著(P0.05)或极显著(P0.01)高于传统教学模式;学生技能考核成绩及期末考核成绩明显优于传统教学模式组,差异极显著(P0.01),学生学习的主动性明显提高。说明PBL与情景式教学相结合的教学模式的教学效果良好,更受学生欢迎。     

商会自治的基石——商会自治规范研究

在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。     

癸氧喹酯干混悬剂含量测定的改进

采用高效液相色谱法测定癸氧喹酯干混悬剂的含量,在2-250μg/mL范围内,峰面积的常用对数与进样量浓度的常用对数呈良好的线性关系,R^2=1(n=5),平均回收率为99.24%~99.51%,RSD在0.05%~0.28%。此方法分析时间短,样品前处理简便、定量结果准确,重现性好,结果满意,为其质量控制提供了依据。     

猪毛色遗传的研究进展

本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。     

Comparison of 2 methods of centesis of the bursa of the biceps brachii tendon of horses

REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air.     

不同样本商品蜂蜜中硒含量的测定

用硝酸和高氯酸消化蜂蜜,使硒游离出来,在微酸性环境下,硒和2,3-二氨基萘(DAN)生成有较强荧光的物质,用环己烷萃取,在激发波长378nm,荧光波长518nm处测定其荧光强度。蜂蜜中硒含量范围:0.10～0.82μg/g。表明:蜂蜜应视为天然富硒营养品。     

乳酸杆菌益生作用机制的研究进展

乳酸杆菌作为益生菌广泛用于人和动物。本文综述了乳酸杆菌改善宿主健康的机制。乳酸杆菌可通过产生抗菌物质如乳酸、过氧化氢、细菌素,或者通过竞争营养或肠道黏附位点来抑制致病菌;通过诱导黏附素的分泌或阻止细胞凋亡而增强肠道的屏障功能,从而保护肠道。文章重点讨论了乳酸杆菌表面成分（表面蛋白、脂磷壁酸和肽聚糖）与肠道受体（Ｃ型凝集素受体、Ｔｏｌｌ样受体和 Ｎｏｄ样受体）,阐述了他们结合后启动免疫调节信号,调控肠道免疫功能以发挥改善健康作用的机制。     

中华人民共和国农业部公告 第267号

为贯彻落实《兽药生产质量管理规范》(简称《兽药GMP》),进一步推动兽药GMP实施进程,我部制定了《兽药生产质量管理规范检查验收办法》,现予公告。本公告自2003年6月1日起施行。附件:兽药生产质量管理规范检查验收办法二○○三年四月十日第一章 总则 第一条 为推动《兽药生产质量管理规范》(以下简称兽药GMP)的实施,规范兽药GMP检查验收工作,制定本办法。 第二条 农业部负责全国兽药GMP管理和检查验收工作;负责制修订兽药GMP检查验收管理规定;负责兽药GMP检查员队伍建设和监督管理工作,负责国际兽药贸易中GMP互认工作。 …     

鸡败血支原体垂直传播模式及其阻断方法

以国际标准强毒Ｒ株人工感染非免疫产蛋鸡,定时扑杀,分别从鼻窦、眶下孔、气管、肺、气囊、卵巢和输卵管分离ＭＧ,并收集感染鸡所产蛋分离ＭＧ。结果表明,人工感染４８小时后上、下呼吸道及肺已被全面感染,９６小时气囊已被感染,１２０小时输卵管已能分离到ＭＧ,卵巢始终分离不到ＭＧ。人工感染鸡自１４４小时便能在其所产蛋中分离出ＭＧ。药物治疗能在７２小时内消除感染,油乳剂苗则需２４天后逐渐降低蛋内ＭＧ分离率,药物卵内注射、种蛋药浴、高温处理均能杀死卵内ＭＧ,但以研制的种蛋浸泡剂药浴效果为最好。     

Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF

Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo.