犬胃肠炎的治疗研究

胃肠炎是引起犬消化系统紊乱的1种临床临床常见病,本文从内蒙古农业大学动物医院就诊的犬胃肠炎病例中筛选了2例症状明显的患病犬,对其发病及治疗过程进行了详细的跟踪记录,现将结果报告如下.     

景观设计中的生态化趋势

景观生态学是20世纪70年代以后蓬勃发展起来的一门新兴的交叉学科。介绍了当前城市景观设计现状,并对此作了初步性探究。同时引入景观生态学对城市景观设计的影响,认为景观生态学将促使今后的景观设计更具科学性和完整性。     

Cell-based Systems as an Alternative to Animal Models

Contents Recent advances in molecular and cellular techniques highlight the potential use of different kinds of somatic, as well as embryonic and adult stem cell types in efficient and rapid in vitro test systems. The rapidly progressing genome sequencing projects will permit studies based on sequence‐defined cell lines. Thus a combination of genomic data, molecular tools and appropriate cells together with a spectrum of high throughput analysis methods, such as cDNA arrays, two‐hybrid analysis, Maldi‐TOF spectrometry and protein chips will produce powerful test systems for target gene, as well as target protein identification and for toxicological and pharmacogenetic testing. These studies will be performed first in vitro but subsequently cellular test systems will additionally be required. The modern cell factory allows the researcher to answer specific questions about the role of genes, proteins and metabolites, as well as several other factors. The employment of embryonic stem cells and sophisticated methods to direct their differentiation towards desired mature cell types or differentiation states, will allow investigation into the molecular switches controlling embryonic development, differentiation, tumorigenicity and teratogenicity. The topic of this article is whether cell‐based systems could be an alternative to the usage of animal, or more precisely whether cell‐based systems could probably be the better alternative?     

Ethane ocean on titan

It is proposed that Saturn's satellite Titan is covered by an ocean one to several kilometers deep consisting mainly of ethane. If the ocean is in thermodynamic equilibrium with an atmosphere of 3 percent (mole fraction) methane, then its composition is roughly 70 percent ethane, 25 percent methane, and 5 percent nitrogen. Photochemical models predict that ethane is the dominant end product of methane photolysis so that the evolving ocean is both the source and sink for continuing photolysis. The coexisting atmosphere is compatible with Voyager data.     

小茴香果实营养价值的研究

本文对托县小茴香果实进行了比较全面的营养成份测定，并对数据进行研究分析。测定结果表明：小茴香果实营养丰富，含蛋白质１８．９８％；脂肪１６．２２％，Ｖ＿Ｅ２．６７７ｍｇ／１００ｇ，Ｖ＿Ｂ１．６０ｍｇ／１００ｇ，Ｓｅ０．４７６ｍｇ／ｋｇ，胡萝卜素２．７９６ｍｇ／１００ｇ，还含有１７种氨基酸及多种微量元素，总能量高达４９９５ｋＣＵＩ／ｋｇ，这将为进一步合理开发利用小茴香资源提供有力的依据。     

测土施肥技术对内蒙古通辽市玉米养分管理的影响现状与评价

【目的】 明确通辽市玉米施肥现状,对该地区玉米养分管理提供科学指导。 【方法】 对通辽市2005—2007年和2010—2012年两个时期的农户调查数据进行分析。 【结果】 1) 通辽市2010—2012年玉米化肥投入总量为333.5～383.5 kg/hm2,氮、磷、钾投入量分别为210.0～237.0 kg/hm2、85.5～106.5 kg/hm2、38.0～40.0 kg/hm2。与2005～2007年比,总养分投入量没有差异,其中氮肥投入量没有差异;磷肥投入量有所减少,旱地和水浇地分别减少28.5 kg/hm2、15.0 kg/hm2;钾肥投入量旱地和水浇地分别增加23.0 kg/hm2和20.0 kg/hm2。2) 与最佳施肥量比,目前玉米氮肥投入量偏高,磷肥和钾肥投入量偏低,特别是钾肥投入量明显不足。3) 通辽玉米施肥主要以基肥 + 1次追肥方式为主,旱地全部为基肥 + 1次追肥,水浇地90%为基肥 + 1次追肥,仅有10%为基肥 + 2次追肥。旱地和水浇地氮肥基追比例分别为1∶2.9和1∶3.3,较合理。4) 通辽市玉米基肥施用的化肥品种主要为磷酸二铵和复合肥,追肥为尿素。复合肥以通用型复合肥为主,其中旱地玉米施用的复合肥配方为15–15–15、18–18–18、17–17–17、19–19–19的占77.6%,水浇地玉米施用的复合肥配方为15–15–15、12–15–8、15–20–10的占78.1%。旱地和水浇地玉米施用的复合肥配方差异较大。5) 有机肥施用农户少,仅占27%。6) 玉米氮磷钾比例为1∶0.45～0.46∶0.10～0.22,氮磷比例较合理,氮钾比例与玉米的需肥规律差异较大。内蒙古通辽市玉米施肥存在氮肥施用过量、磷肥施用偏低、钾肥和有机肥投入不足等问题。      

热扩散探针法在树木蒸腾耗水研究中的应用

介绍了热扩散探针方法(TDP)测定树干液流的基本原理,并综述了热扩散探针法在树木单株液流与耗水特征及其影响因素、林分蒸腾耗水量估计等研究中的应用现状,最后阐述了树干液流研究中存在的问题及展望.     

一例雏鸡化脓性脑炎的诊治

鸡新城疫油乳剂灭活疫苗的接种常采用肌肉或皮下注射方法。注射接种效果确实,疫苗经皮下或肌肉注射后可迅速被机体吸收,产生的免疫力持久,诱导机体产生较高的抗体效价。但有时可能会因操作不当引起注射部位的损伤和局部感染。我院于2006年9月接诊了由于接种新城疫油乳剂灭活苗,造成疫苗注射部位组织感染,脑组织受伤并感     

Self-assembled water-soluble nucleic acid probe tiles for label-free RNA hybridization assays

The DNA origami method, in which long, single-stranded DNA segments are folded into shapes by short staple segments, was used to create nucleic acid probe tiles that are molecular analogs of macroscopic DNA chips. One hundred trillion probe tiles were fabricated in one step and bear pairs of 20-nucleotide-long single-stranded DNA segments that act as probe sequences. These tiles can hybridize to their targets in solution and, after adsorption onto mica surfaces, can be examined by atomic force microscopy in order to quantify binding events, because the probe segments greatly increase in stiffness upon hybridization. The nucleic acid probe tiles have been used to study position-dependent hybridization on the nanoscale and have also been used for label-free detection of RNA.