柄袋沙蠋体壁和消化系统乙酰胆碱酯酶免疫组化定位

[目的] 定位AChE在柄袋沙蠋(Arenicola brasiliensis)体壁、消化系统各组织器官的分布情况,为AChE在环节动物中的分布提供形态学资料.[方法]采用免疫组织化学S-ABC法进行定位研究.[结果]柄袋沙蠋体表上皮细胞以及吻、食道、食道侧囊、胃、肠道黏膜上皮细胞均呈AChE 阳性反应,且阳性反应多集中于上皮细胞的游离端;体壁环肌、纵肌也均呈AChE 阳性反应;各部位的结缔组织也有不同程度的AChE 分布.[结论]AChE在柄袋沙蠋体壁和消化系统各器官的广泛分布可能与机体的运动、消化和吸收等功能相关.     

斑嘴鸭消化系统形态学观察

[目的]了解斑嘴鸭消化系统与食性关系.[方法]对6只成体癍嘴鸭(Anas poecilorhyncha)消化系统进行解剖,并对各器官进行测量.[结果]斑嘴鸭消化管总长为(1 889.30±102.11)cm,是体长的(3.700±0.197)倍.其中小肠占消化管总长的73.4%±1.5%.是体长的(2.723±0.196)倍.斑嘴鸭喙扁平,肌肉肥厚,肌胃较发达,小肠最发达,具双侧盲肠但并不发达,仅占消化管的13.0%±0.8%.[结论] 该研究结果为宽嘴鸭的保护和形态学研究提供了参考.     

珍稀濒危植物青岛老鹳草形态解剖学研究

[目的]为了解青岛老鹳草濒危的原因,为其资源利用、引种驯化和新品种培育等提供理论依据.[方法]分别以青岛老鹤草的根尖、茎段、叶片、叶柄为材料,采用常规石蜡法制片,对其进行形态解剖学观察.[结果]青岛老鹳草根的初生结构由表皮、皮层和中柱组成,初生木质部为二原型;次生结构由周皮、薄壁组织和次生维管组织构成,薄壁细胞中含有大量淀粉粒;茎呈类方形,由表皮、皮层和维管柱组成,为外韧维管束;叶为典型异面叶,表皮具有大量表皮毛,叶及叶柄均具厚角组织.根茎叶细胞中均含有大量簇晶.[结论]青岛老鹳草营养器官具有一般多年生草本双子叶植物的结构特点,在形态结构方面未体现出濒危的特点.     

棉秆结构及热解规律的研究

[目的]研究棉秆的结构及热解规律.[方法]采用热重分析法研究了棉秆纵向(棉杆和棉根)及横向(皮层、质层和髓层)的热解特性.[结果]棉秆是一种质地不均匀的材料,其横、纵向各结构存在较大差异,各层成分含量差异明显.棉杆和棉根随升温速率增大反应程度越剧烈,炭得率依次减小,且相同升温速率下,棉杆炭得率高于棉根;皮、芯、髓层炭得率依次减小,皮层反应剧烈程度小于芯和髓层.[结论]该研究为获得棉秆活性碳技术提供了理论依据.     

藏系绵羊MSTN基因在不同年龄不同组织的表达定量研究

[目的]研究MSTN基因在藏系绵羊不同年龄、不同组织的表达差异.[方法]根据Gen Bank已发表序列(NM 001009428.1)设计1对引物,以藏系绵羊组织总RNA为模板,采用实时荧光定量PCR技术(QRT-PCR)分析了MSTN塞因在不同年龄阶段的真胃、瘤胃、腿肌和心肌中的基因表达量.[结果]经过内参基因校正后,综合4个组织分析,MSTN基因在6月龄藏系绵羊的相对表达量最高,是12月龄藏系绵羊的2.52倍,是羔羊的2.24倍,是9月龄的1.30倍(P<0.05).且MSTN基因在腿肌中的表达量最高,在其他组织几乎未表达,在腿肌中的表达量是其瘤胃的3984.78倍,是心肌的602.69倍(P<0.01).[结论」为MSTN蛋白抗体的正确利用奠定了基础.     

蒙古绵羊胚胎大肠黏膜上皮的组织发生

[目的]研究蒙古绵羊胚胎大肠黏膜上皮的组织发生.[方法]利用组织学常规方法.[结果]蒙古绵羊胚胎大肠黏膜上皮的发育经历了单层细胞到复层细胞再到单层细胞的过程;杯状细胞在37 mm胚初见;90 mm胚直肠腺开始发育,142 mm胚盲肠、结肠肠腺开始发育.[结论]蒙古绵羊胚胎大肠黏膜上皮经历了单层细胞到复层细胞再到单层细胞的发育过程.     

日光温室土壤温度变化特征和预报模型研究

[目的]研究日光温室内土壤温度变化规律及其预报模型.[方法]利用徐州地区标准日光温室内外气温和温室内多层次土壤温度观测资料,分析了温室内各层土壤温度的年变化和日变化,并对温室内土壤温度的预报模型进行了模拟和检验.[结果]温室内土壤温度年变化和日变化均呈单峰曲线,下层温度变化振幅小于上层.温室内各层土壤温度(最高值、最低值和平均值)与当日温室外同类型气温的相关性最为密切.以当日和前一日温室外日平均气温、日最高气温、日最低气温为预报因子,建立了温室内同类型不同层次土壤温度预报模型.温室内各层日平均温度的模拟效果优于对应层的最高温度的模拟效果,劣于对应层日最低温度的模拟效果;下层土壤日最高温度和日平均温度的模拟效果优于上层;实测土壤温度在15～30℃模拟效果较好,其他温度段模拟值较实测值偏低.[结论]该研究为日光温室内植物的生长发育环境提供理论依据.     

黑木耳YBS-3菌株ras启动子的克隆与分析

[目的]从黑木耳(Auricuralia auricular)基因组中克隆内源ras启动子,为黑木耳利用基因工程培育优良品种提供启动子元件材料.[方法]利用PCR技术,以黑木耳菌株YBS-3基因组DNA为模版,克隆得到4条ras启动子片段.采用启动子序列分析软件Place、Promoter prediction和TFSEARCH ver.1.3对其进行序列结构分析.[结果]4条启动子片段均含有核心启动子序列,除典型的基本作用元件TATA bo、和CAAT box外,还有许多其他重要作用元件如GATA BOX、GGGC BOX和CCAAT BOX1等,同时每条片段中均至少具有1个转录起始位点,且检测到HSF、AP-1、GCN4等多个转录因子结合位点.[结论]4条目的的序列在理论上具有较有的高动子活性功能.     

软枣猕猴桃对家兔小肠平滑肌的影响

[目的]观察药用植物软枣猕猴桃滤液对家兔小肠离体平滑肌运动功能的影响.[方法]制作家兔离体肠段标本,记录处理前后肠段的平滑肌收缩强度和静息张力,换算成张力和频率进行比较.[结果]较低浓度(5～15 mg/ml)的软枣猕猴桃滤液可明显兴奋小肠平滑肌的自发收缩活动,并显著减弱氯化乙酰胆碱对小肠平滑肌活动的增强效应;而在高浓度时(30～50 mg/ml)则增加平滑肌的静息张力.[结论]软枣猕猴桃滤液对胃肠运动具有较为复杂的调整作用.     

黄颡鱼不同器官过氧化氢酶活性比较

[目的]比较黄颡鱼不同器官中过氧化氢酶活性.[方法]采用不连续聚丙烯酰胺凝胶电泳法和钼酸铵比色法,测定黄颡鱼6种组织(心脏、肝脏、鳃、肠、眼、肌肉)中过氧化氢酶的活性,并对各器官的酶活性进行比较.[结果]2种测定方法得到的过氧化氢酶活性具有一致性,且黄颡鱼6种组织的过氧化氢酶活性,由大到小依次为心脏、肝脏、鳃、肠、眼、肌肉.[结论] 黄颡鱼的过氧化氢酶活性,存在明显组织差异性.     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

Comparison of the results of surgical and conservative treatment of fractures of the diaphysis of the tibia

In this paper is treated the fundamental problematic of the fracture of the diaphysis of the tibia and the therapeutic results after the conservative and operative treatment are confronted. Among 518 patients with 433 open fractures and 35 with closed fractures of the diaphysis of the tibia, successful treatment of more 2/3 was obtained in the period from 1968 to 1972. Following our casuistics and literature, whose results are similar, we find out that the average total treatment of the osteosynthesis of the fracture of the diaphysis was shortened for 2,5 months depending upon the type and the localisation of the fracture. Apolied methods of the operative and conservative and conservative treatment in relation to the velocity of the medical cure as well as to the extreme anatomical-functional results are analised. We noticed that osteosynthesis, made by the intermedullary nail and the extension of the canals or by a small AO table, by the achieved stability makes conditions of immediate motions and an early rehabilitation. Because of that it gives the best functional results.     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

参与式农业基地建设行动方案设计

为了编制实用性强的基地建设行动方案,首先,确定参与式发展的主体,搭建一个"决策框架";其次,针对行动目标,提出不同参与主体,如管理者、农民、消费者等团队与个人的目标及行动内容;最后,工作应向重塑伙伴式合作关系,挖掘农民自我发展潜力,完成三大角色的转换,打造农业基地文化等方向推进.