共查询到20条相似文献,搜索用时 156 毫秒
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黄宁 《柳州职业技术学院学报》2001,1(1):82-84
本在详细描述了黄腹彩龟的形态特征的基础上,对黄腹彩龟的鉴定和命名进行了讨论,澄清了该龟的中学名和拉丁学名使用上的混乱,同时,简单地介绍了该龟的养殖方法。 相似文献
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张佶瑞 《第二课堂(小学)》2014,(Z1):42-43
正一晃眼,小乌龟亮点已经在我家定居四年了,虽然我们对它疼爱有加,但总觉得它形单影只,十分孤独。于是我们打算给亮点一个惊喜——给它找个伴。就这样,一只比它小许多的野生巴西彩龟小不点进入了我们家。小不点初来乍到,我们就把它直接放进了亮点的领地,让它们开始同居生 相似文献
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龟蜡蚧(Ceroplastes floridensis Constock)是危害天竺桂的一种主要害虫.运用正交试验方法,在福建尤溪天竺桂行道树中,选用丁硫克百威、阿雏菌素、啶虫脒3种农药进行秆部注射防治.结果表明:农药种类和防治次数是影响防治效果的主要因素,采用3%啶虫脒原液,每株用药量8mL,3次防治,效果最佳.啶虫脒安全、低毒,持效期长,采用注射施药,对环境无污染,对人畜和其它有益生物安全,防治成本低,可在生产上推广应用.防治该虫还应加强综合治理. 相似文献
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NaCl胁迫下水杨酸浸种对水稻幼苗生长的影响 总被引:10,自引:0,他引:10
叶梅荣 《安徽技术师范学院学报》2002,16(4):44-46
本试验对稻种进行不同浓度的水杨酸浸泡处理,采用琼脂培养法,在50mmol/LNaCl胁迫下对水稻进行培养,水稻三叶一心期测量各项生理指标。结果表明:水杨酸浸种处理与空白对照相比较,水稻幼苗叶绿素含量增加,过氧化物酶活性提高,电导率降低,丙二醛含量降低。不同的水杨酸处理浓度相互比较。得出:0.1g/L的水杨酸处理浓度在50mmol/LNa-Cl胁迫下,能够最有效地提高水稻幼苗的抗性。 相似文献
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正一晃眼,乌龟亮点在我家已有四年了。虽然我们对它疼爱有加,但总觉得它形单影只,十分孤独。于是我们给了它一个惊喜——又买来一只比它小许多的巴西彩龟小不点。小不点初来乍到,我们就把它同亮点放在一起。小不点在亮点这"庞然大物"面前怎会不害怕呢?瞧,它把头、脚、尾巴全部缩进壳里,连看都不敢看亮点一眼。倒是亮点反应迟钝,过了好久,才发现领地里多了个东西。它游过去左看看,右瞧瞧,似乎把小不点当成了 相似文献
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日本龟蜡蚧生物学特性及化学防治研究 总被引:1,自引:0,他引:1
在观察掌握日本龟蜡蚧生物学特性的基础上。对寄生在无核枣树上的日本龟蜡蚧进行了多种药剂、不同浓度的防治对比试验,筛选出了40%速蚧克乳油1000倍液、2000倍液,0.9%爱福丁乳油1000倍液、2000倍液和25%喹硫磷乳油1000倍液、1500倍液,防治效果均在89%以上,其中以40%速蚧克乳油1000倍液防效为最。达98.72%,0.9%爱福丁乳油和25%喹硫磷乳油低浓度防治最为经济。 相似文献
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目的:探究家兔失血性休克模型建立及解救.方法:1.将家兔分成ABCD四组,并分别通过从三通管的侧管处抽血,建立失血性休克模型.2.停止放血,把4只回输原血的家兔分成ABCD四组,四组家兔在10min内快速再灌注全部自体血.3.其中A组注射生理盐水5ml/kg(30滴/min)进行抢救;B组同时耳缘静脉注射1%山莨菪碱(1mg/kg)、地塞米松(2.5ml/kg)进行抢救,观察生理指标变化;C组同时注射1%山莨菪碱(1mg/kg)进行抢救;D组同时注射地塞米松(2.5ml/kg)进行抢救.结果:A输液后,由于及时补充了血容量,休克症状好转;B组同时注射山莨菪碱、地塞米松和碳酸氢钠后,经应用血管活性、药物纠酸、扩容、防治细胞损伤等多管齐下的治疗方案治疗后家兔的生命体征各项指标有所好转;C组同时输液和注射山莨菪碱后,由于山莨菪碱的保护作用,休克症状好转;D组同时输液和注射地塞米松后,由于及时补充血容量及糖皮质激素的保护作用,休克症状明显好转.结论:实验结果表明经应用血管活性药物、纠酸、扩容、防治细胞损伤等多管齐下的治疗方案治疗后家兔的生命体征各项指标如血压、呼吸、尿量有所好转。 相似文献
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曲安奈德局部注射治疗痤疮瘢痕的临床疗效比较研究 总被引:1,自引:0,他引:1
李文忠 《襄樊职业技术学院学报》2006,5(2):10-10,21
为探讨曲安奈德局部注射治疗痤疮瘢痕的效果,将27例患者随机分为治疗组和对照组。治疗组使用曲安奈德混合液局部注射,对照组使用单纯曲安奈德局部注射,一个疗程后判断疗效。结果经统计学处理后显示。治疗组的治愈率和有效率均明显高于对照组。表明使用曲安奈德混合液局部注射治疗痤疮瘢痕的疗效优于单纯使用曲安奈德局部注射治疗的疗效。 相似文献
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半胱胺对草杂鸡生长性能及淋巴器官发育的影响 总被引:2,自引:0,他引:2
本试验研究了半胱胺对鸡生长性能及淋巴器官发育的影响.试验选用1日龄草杂鸡160羽,随机分成2组,每组80羽;半胱胺分别按0和0.6g/kg添加到对照组鸡和试验组鸡的基础日粮中;试验期为30天.试验结果表明,试验组鸡的增重较对照组高2.44%,差异显著(p<0.05);对照组鸡胸腺的髓质区较大,试验组鸡的胸腺小体较对照组鸡少;试验组鸡脾脏中红髓和白髓的界线较对照组鸡清晰,试验组鸡脾脏脾小体、脾索和脾窦较对照组明显;试验组鸡法氏囊皱褶较对照组大,对照组鸡法氏囊小结出现髓质和皮质分界线,而试验组鸡法氏囊小结没有出现髓质和皮质分界线.本试验的结果说明半胱胺对草杂鸡生长性能及淋巴器官的发育具有促进作用. 相似文献
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The main objective of this paper is to show that a family arrangement in which the elderly co-reside with the young determines that the elderly support the public education expenditure. Considering that this type of family arrangement is more common in Latin American countries than in the United States, our study is concentrated in Brazil. This study is based on a panel of 2054 Brazilian municipalities using data from the 1991 and 2000 censuses. 相似文献
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Luiz Marcelo de Carvalho Jorge Megid Neto Clarice Sumi Kawasaki Dalva Maria Bianchini Bonotto Ivan Amorosino do Amaral José Artur Barroso Fernandes 《Environmental Education Research》2018,24(10):1447-1463
AbstractThis article discusses an analysis of abstracts of Brazilian theses and dissertations on environmental education from a database organised and maintained by a group of researchers in the EArt Project (www.earte.net). In presenting extracts of key trends in this dataset, our aim is to provide a snapshot of the many possible approaches to, and histories of, Brazilian environmental education research. The data also allow us to raise some questions that explore possible ‘blank spots’, ‘blind spots’ and ‘bald spots’ in Brazilian research on environmental education. Given the temporal development of the research field since the 1980s, we illustrate these ‘spots’ by exploring data related to epistemological and methodological diversity, from the viewpoint of knowledge areas as well as the graduate programmes that have been developing research on environmental education. Finally, we draw a picture of the methodological trends that have been privileged by Brazilian researchers, and pose questions as to what is needed in shaping an agenda for research on environmental education in Brazil into the future. 相似文献
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噻吩磺隆对玉米根尖细胞的遗传毒性效应 总被引:1,自引:0,他引:1
用不同浓度的噻吩磺隆对玉米根尖细胞进行染毒处理。结果表明,随着噻吩磺隆浓度的增加诱发玉米根尖细胞微核率增高,有丝分裂指数降低;对其进行剂量和时间效应测定,结果表现明显的剂量和时间效应关系,显示了噻吩磺隆具有一定程度的诱变活性。 相似文献
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Andre Salata 《British Journal of Sociology of Education》2019,40(3):410-429
In this article, I aim to determine whether, in view of the trend of educational expansion in recent decades in Brazil, the role played by schooling in the labor market of Brazilian major metropolitan regions has changed, becoming positional rather than absolute. To this end, I analyze the influence of schooling on people’s income and occupational status. Based on data from the National Household Sample Survey (PNAD-IBGE) for years 1995, 2005 and 2015, I compare ordinary least squares models that use absolute and positional measures of schooling. The results show that the explanatory power is greater for positional measures than for absolute ones, and that this advantage has increased over recent decades. As a result, it is argued that although educational expansion possibly makes the chances of access to a certain absolute schooling level less unequal, it also ends up undermining the opportunity structure related to it. 相似文献