基于翻转课堂的医学免疫学相关的微课设计探讨

微课为一种新型的网络学习形式,随着互联网技术在教育教学中的广泛应用,微课成为翻转课堂这种新型教学模式的载体,它是教育领域进行教学改革实现自主化学习的新生教学资源。结合医学免疫学相关知识探讨基于翻转课堂的微课设计策略,为教师更好实施翻转课堂,设计更好的微课提供一点参考。     

微课、翻转课堂在《社会统计与应用》课程教学中的结合应用

针对《社会统计与应用》传统课题教学存在的方式单一、课时局限、效果欠佳等问题,拟结合该课程的诸多特点,将微课、翻转课堂等新兴的教学手段用于该课程的教学,拟针对较易章节采取翻转课堂,针对较难章节采取传统课堂讲授配合微课等综合性的教学方法,以提升该课程的教学效果,提高学生的整体素质。     

微课在机车牵引运用教学中的应用探讨

机车牵引运用课程在铁道机车专业教学中有着不可替代的重要地位。文章结合微课和翻转课堂模式,针对目前教学中存在的问题,提出了一种基于微课的机车牵引运用课程翻转教学模式。     

高职英语微课的翻转课堂建设现存问题与对策研究

现阶段翻转课堂受很多高校的关注,成为了一种流行的教学模式,微课是将教育和信息化两者相互融合,英语微课的翻转课堂以学生为中心,可以激发学生的学习兴趣,有效的提高学生的学习能力.文章主要针对现阶段流行的微课翻转课堂建设过程中存在的问题进行分析,并提出几点对策,希望可以帮助提高英语教学质量.     

“翻转课堂”在高职院校《药理学》教学中的实践与探讨

本文以浙江医药高等专科学校D14级1-4班为教学对象,分别采用传统教学方法和"翻转课堂"教学方法进行《药理学》课程教学。教学结束后通过对期末成绩的统计以及对1-4班班级学生进行教学满意度问卷调查。期末成绩统计显示"翻转课堂"教学组成绩明显高于传统教学组(P<0.05);问卷调查结果中"翻转课堂"教学组对《药理学》课程兴趣以及对教学内容的掌握程度显著高于传统教学组。从教学研究结果可以看出"翻转课堂"教学方法在高职高专的《药理学》教学中具有一定的优势。     

基于微课的翻转课堂在教学中的应用与反思

翻转课堂将传统课堂时间的使用进行了重新规划,实现"先教后学"到"先学后教"模式的翻转。基于微课的翻转课堂在当前教育环境下可行,但阻力依然存在,前进中需不断更新教学理念,加大教学设备投放,减轻学生课业负担,完善师生评价机制。     

基于翻转课堂的高职课堂教学创新研究

伴随电子信息技术的迅猛发展,传统的课堂产生了越来越多的"低头族",学生厌学情况越来越严重,究其原因,是互联网的快速发展和信息获取方式的进步给传统课堂带来了巨大挑战。提出将网络上风靡的微课和慕课与传统课堂结合,以改进课堂教学,建立了慕课+翻转课堂的教学模式。实际的创新教学实践表明,新的教学模式在学习效果、技能培养等方面成效显著。     

浅议微课与传统大学英语教学的有效结合

微课作为翻转课堂的一个必不可少的教学手段已然受到了广大教育工作者及学校管理者的重视,也开始被广泛应用到了实际的教学之中。本文从微课的概念特征及内容入手,分析了大学英语教师制作微课的方式,并说明微课教学所面临的优势与挑战,探讨了微课如何与传统大学英语教学有效地结合。     

基于微课的翻转课堂模式在兽医免疫学教学中的实践与体会

为提高兽医免疫学的课堂教学质量,在兽医免疫学教学中,以"适应性免疫应答过程"为教学内容,构建、实施了"基于微课的翻转课堂"教学改革实践及效果评价,并对其设计策略进行探讨。结果表明,采用的基于微课的"翻转课堂"教学,将学生由消极被动接受知识的状态转变为积极主动索取知识的协作能力状态,提高了学生分析问题、解决问题的能力,使教学效果得到大幅度提高,为在兽医免疫学教学中实施精细化教学、促进学生自主学习、提高学习效率提供了借鉴和基础资料。     

翻转课堂教学模式在《家畜环境卫生学》教学中的应用

翻转课堂是让学生在课前完成知识的学习、在课堂上完成知识的吸收与掌握的一种新型教学模式。文章结合《家畜环境卫生学》课程教学目标,引入翻转课堂教学模式,结果表明:翻转课堂教学模式教学满意度总评分(93.55±0.10)显著高于传统课堂学生给出的评分(93.05±0.45)(P0.05);传统课堂教学模式的学生成绩(84.29±0.52)显著低于翻转课堂模式的学生(85.93±1.04)(P0.05)。同时,根据实施情况发现,制作短小精悍小视频,结合微信打卡程序等把控学生课前的学习时间和效果,并根据当前养殖现状以及争议性问题调节课堂教学气氛,能促进学生主动学习,提高课堂教学效果,为翻转课堂教学模式在《家畜环境卫生学》上的推广提供参考。     

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。     

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。     

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。     

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.     

Mechanism of Action of Probiotic Function of Lactobacilli

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。     

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。