共查询到20条相似文献，搜索用时 921 毫秒
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江南春来早。眼下,正是3月。行走赣南大地田野,但见溪水潺潺,满目青翠,千山竞秀。在这阳光明媚的日子里,深山幽谷中的各种蜜粉源植物争奇斗艳,真是山花烂漫,美不胜收。辛勤的蜜蜂早已忙碌起来,它们嗡嗡地闹着,在花丛中飞来飞去,不停地在蜂巢与花丛中往返……美好的时光,总是令人无限遐想。美好的事物,总是令人乐此不倦。此刻的我,已结束了一天的工作,蜗居在租来的斗室里。窗外,万家灯火,繁华的街头,依旧川流不息。而我,在这美好的夜晚,泡清茶一杯,随意阅读,无限惬意。 相似文献
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《养殖与饲料．饲料世界》2019,(10)
<正>一、看鼻镜。健康的牛鼻镜有汗珠,分布均匀。病牛鼻镜干燥起壳,严重时有龟裂纹。二、看牛舌。健康的牛舌光滑红润,舌苔正常,伸缩有力。病牛舌不灵活,舌苔厚而粗糙无光,多为黄、白、褐色。三、看口腔。健康的牛口腔黏膜淡红,温度正常,无臭味。病牛口腔黏膜淡白流涎,或潮红干涩,有恶臭味。四、看两耳。健康的牛两耳牵动灵活,时时摇动,手触温暖。病牛头低耳垂,耳不摇动,两耳根非冷即热。五、看双眼。健康的牛双眼有神,目光炯炯,视觉灵敏,反应迅速。病牛双眼无光,反应迟钝。 相似文献
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蜂花粉治疗前列腺炎患者,疗效确切。年龄最大的82岁,最小的34岁,病程有半年的,一年的,五年的不等。多数人中都患有多种疾病,高血压,糖尿病,头痛,便秘,失眠等。曾用过多种药物治疗,均不理想。但服用蜂花粉后,效果明显。有2-3月治愈的,有半年以上治愈的,有长达一年、二年之后治愈的。总有效率100%。病例一、某男76岁,退休干部。患前列腺肥大,夜尿次数多,排尿困难,阴囊潮湿,如水洗一般,便秘、失眠、并患股骨坏死,坐轮椅度日,生活不能自理。他用过多种药物,住过多次医院,效果欠佳。在他大剂量服用蜂花粉两三个月以后,潮湿症状消失,夜尿减少,大便… 相似文献
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Katherine A Houpt Steven Zicker 《Veterinary Clinics of North America: Small Animal Practice》2003,33(2):405-16, vii-viii
The effects of dietary deficiency, including both malnutrition and deficiency of specific vitamins, on behavior is discussed with special emphasis on the growing kitten and puppy. The effect of caloric restriction on behavior is reviewed so that owners can be advised what to expect when their dog is placed on a reducing diet. The evidence for influence of dietary protein and tryptophan on canine aggression is presented. The effect of special diets on canine cognitive dysfunction is reviewed. 相似文献
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进行了奶牛乳头药浴碘甘油溶液的杀菌作用研究。试验表明,当给药浓度为0．25％（含碘）时,对大肠杆菌、金黄色葡萄球菌和溶血性链球菌的最短作用时间为15s,杀菌率均为100％,对白色念珠菌作用的最短时间为1min,杀菌率为100％。结果说明该消毒剂对上述细菌和真菌均具有良好的杀灭作用,可用于奶牛挤奶前后乳头的药浴消毒,推荐临床药浴使用浓度为0．25％f原液作1：8倍稀释）． 相似文献
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草原生态补奖政策对青藏高原草地植被状况的影响分析 总被引：3，自引：0，他引：3
为探究草原生态补奖政策对青藏高原县域草地植被状况的影响，本文以2006—2018年青藏高原主体省份青海西藏牧区68个县域的数据以及通过遥感技术获取的归一化植被指数(normalized difference vegetation index,NDVI)为基础，用NDVI值量化草地植被状况，应用固定效应模型控制不同县之间社会经济因素、气候因素的影响，通过固定效应模型分析草原生态保护补助奖励政策对青藏高原草地植被状况的影响效果。研究结果表明，草原生态补奖政策对草地植被的影响呈现明显的空间异质性，对草地状况好的县的影响大于草地状况差的县，对青海省的影响大于西藏自治区，对牧区县的影响大于半牧区县。草原生态补奖政策对草地保护是有效的，但有效性被其他社会经济和气候因素降低或中和。在未来有关草原保护政策制定的过程中需要考虑与市场和气候条件相关的其他因素可能的抵消作用。 相似文献
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重组牛皮蝇素A蛋白的免疫试验 总被引：3，自引：0，他引：3
用由毕赤酵母表达的皮蝇素A（Hypdermin A，HA）蛋白分别免疫新西兰大白兔和牦牛，了解该蛋白免疫效果。用两种不同分子量的重组HA蛋白分别免疫新西兰大白兔1次和2次，ELISA测其抗体消长规律。结果表明，3周后抗体水平达到峰值，后缓慢下降。50KD蛋白免疫效果较30KD蛋白好，差异非常显著（P〈0．01）。用其中50KD的重组HA蛋白分别在7月和9月免疫自然感染牛皮蝇蛆病牦牛，观察感染率和感染强度，ELISA测其抗体消长规律。结果表明，7月免疫组与9月免疫组感染率分别为83．3％和36．3％（对照组为55．5％）；平均感染强度分别为6．5和4．2（对照组为13．0），差异不显著（P〉0．05）。免疫后，抗体水平上升，3个月后缓慢下降。9月免疫组免疫效果较7月免疫组好，三组抗体水平差异非常显著（P〈0．01）。上述研究结果为防治牛皮蝇蛆病疫苗的深入研究和实践运用提供了参考依据。 相似文献
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《科技视界》2014,(30)
The paper is organized in three parts. The first part is about the history and development periods of business incubation; the second one is on its three generations defined by scholars; and the third one is on its present situation including various forms of incubators. In the conclusion, a brief reflection is made on its significance in economy and on the value it provides for society. 相似文献
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Fairweather I 《Veterinary parasitology》2011,176(1):1-8
A survey of literature on experimental infections with the liver fluke, Fasciola hepatica published between 2005 and 2009 has revealed a general lack of information on where fluke material (i.e. metacercariae) was sourced from. Even less information was given on the drug status of the fluke isolate used, which is a particular concern for those studies that involved anthelmintics. In these two respects, information on the liver fluke lags far behind that for nematodes, where such information is given almost as a matter of course. Of additional concern is that, at times, information about the source and drug history of fluke isolates was incorrect. The overall aim of the review is to demonstrate why it is important to provide as much information as possible on what fluke material is being used. It also attempts to correct some of the errors in the literature and gather together what information is available about the provenance of those isolates that have been used in recent experimental studies. 相似文献
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甲基丙烯酸甲酯在真丝上接枝共聚反应条件的优化 总被引：1，自引：0，他引：1
对有引发剂和无引发剂存在时甲基丙烯酸甲酯对真丝接枝增重的工艺条件进行研究,并用正交试验法探讨了不同的温度、时间、单体质量浓度等对接枝增重效果的影响。有引发剂的接枝聚合反应最佳工艺条件为反应温度80℃、单体质量浓度50g/L、反应时间40min;反应温度和单体质量浓度对接枝率的影响极其显著,反应时间对接枝率的影响不显著。无引发剂的接枝聚合反应最佳工艺条件为反应温度80℃、单体质量浓度55g/L、反应时间3h,反应温度对接枝率的影响极其显著,反应浓度对接枝率的影响比较显著,反应时间对接枝率的影响不显著。 相似文献
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宁夏乳品企业依托地区奶源优势,呈现出繁荣发展的景象。但在进一步扩大市场边界的过程中竞争优势却不明显,企业缺乏品牌竞争力是关键因素。本文基于品牌竞争力相关理论,对宁夏乳业品牌发展现状、存在的主要问题及其制约因素进行分析,并提出提升宁夏乳品企业品牌竞争力的策略,以期对引导宁夏乳业市场健康理性发展起到一定的推动作用。 相似文献
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Expression of amphiregulin during the pre- and post-implantation period in the mouse reproductive tract 总被引：1，自引：0，他引：1
In mammals, embryo implantation is an essential step in reproduction. Implantation is a phenomenon that involves crosstalk between the blastocyst and the maternal endometrium. However, the molecular basis of the connections between the blastocyst and endometrium is not yet fully understood. Amphiregulin is a member of the epidermal growth factor family and is known to be expressed in the luminal epithelium of the mouse uterus on 3.5 days post coitum (dpc). Thus, to clarify the mechanism of amphiregulin at fetomaternal interface, we analyzed the expression pattern of amphiregulin mRNA in the oviducts and uteri of pregnant and psuedopregnant mice by means of real-time PCR. Amphiregulin expression in the pregnant uterus dramatically increased on 2.5 dpc, peaked on 3.5 dpc, and declined by 5.5 dpc. Furthermore, to analyze the effect of the presence of an embryo on amphiregulin expression, we determined the expression pattern of amphiregulin mRNA in the uterus after embryo transfer on 0.5 and 1.5 dpc. A previous study showed that the expression of amphiregulin mRNA depends on the concentration of progesterone. However, our present results indicate that amphiregulin mRNA is upregulated by the presence of fertilized eggs in the lumen of the oviduct on 0.5 dpc. 相似文献
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L Mandelker 《Veterinary Clinics of North America: Small Animal Practice》2000,30(6):1357-67, viii
Experimental therapy in veterinary medicine is based on empiric reasoning. If a particular therapy is labeled experimental, it means that its effectiveness has not been demonstrated scientifically. Empiric therapy is experimental and is based on experience, not on scientific proof. The purpose of this article is to suggest the use of specific experimental drug therapies for certain respiratory disorders in dogs and cats. 相似文献