都匀毛尖茶本地品种茶树研究

[目的]调查都匀毛尖茶本地品种茶树资源,培育本地优势茶树品种,制定无公害种植管理规范.[方法]通过资源普查、田间品比试验并参考有关标准得出都匀毛尖茶本地品种茶树的资源状况.[结果]都匀毛尖茶本地品种茶树地理分布广泛、基因资源丰富.在同一立地和相同气候条件下,不同无性系的腋芽萌动期不同,芽叶数与芽叶重呈极显著正相关,不同无性系的芽叶分枝数差异极显著.[结论]确定了都匀毛尖茶本地品种茶树在当地的分布特点,筛选出6个高产优质原生茶树品系,制定了茶树无公害种植管理规范.     

脱硫废弃物与有机肥配合对盐碱地的改良效果

[目的] 研究不同施量脱硫废弃物和不同种类有机肥配合施用对盐碱地油菜生长状况的影响.[方法] 在乐都县高庙镇蒲家墩村,采用裂区试验设计,进行盐碱地改良试验.[结果] 脱硫废弃物的不同施量对油菜的生理指标、千粒重、产量影响均未达到显著差异,不同种类有机肥和对照之间对油菜的生理指标、千粒重和产量也没达到显著差异.[结论] 该研究为找到一个适合当地盐碱地的改良方案提供理论依据.     

假眼小绿叶蝉对不同绿肥挥发性物质的行为反应

采用Y型嗅觉仪测定和比较了茶树重要害虫--假眼小绿叶蝉成虫对14种绿肥枝叶挥发性物质的行为反应.结果表明:在以空气为对照的条件下,罗顿豆、猪屎豆、铺地木蓝、杂三叶、黄花槐、伞房决明、圆叶决明等7种绿肥的挥发性物质对假眼小绿叶蝉具有明显的引诱作用;紫穗槐、黄花决明、小冠花、木豆、紫花苜蓿、白三叶等6种绿肥的引诱作用不显著;多花木兰对假眼小绿叶蝉成虫表现出显著拒避作用.进一步以茶梢为对照,测定了上述7种对叶蝉有明显引诱作用的绿肥的引诱活性差异,获知铺地木蓝、杂三叶、猪屎豆等3种绿肥对假眼小绿叶蝉的引诱作用都显著低于茶梢;罗顿豆对假眼小绿叶蝉的引诱活性极显著低于茶梢;只有圆叶决明对叶蝉的引诱活性明显高于茶梢,且差异达到极显著水平.     

魔芋主要性状的相关性及因子分析

[目的]研究魔芋主要性状的相关性及众多变量之间的内部依赖关系.[方法]对10个魔芋种质的15个主要性状进行相关性及因子分析.[结果]净光合速率与气孔导度、蒸腾速率间存在极显著正相关关系;产量与平均球茎重、根状茎条数间存在极显著正相关关系;发病率与株高、叶柄基部粗、平均球茎重、最大球茎重、根状茎条数、产量、干物质含量间存在极显著或显著负相关关系.经因子分析,将魔芋各性状指标分为形态因子、光合因于、产量因子及品质因子.[结论]增加球茎平均重是提高产量的重要途径;生长健壮的植株光合作用强,且产量高、干物质含量高、发病率低;生产上应采取农业栽培措施,促进植株生长健壮,有效控制病害发生,提高产量.     

华山松丛生芽增殖和生长研究

[目的]为大规模繁育华山松组培苗提供参考.[方法]以华山松成熟胚为材料诱导丛生芽,研究培养基、激素水平、活性炭、摘除顶芽等因素对丛生芽增殖的影响.[结果]DCR是华山松丛生芽增殖和生长的最佳培养基,芽增殖需要较高浓度的6-BA;添加NAA不利于丛生芽增殖;活性炭(AC)对已分化芽的伸长有明显促进作用,且活性炭最佳添加量为2.0 mg/L;丛生芽在培养基DCR+4 mg/L6-BA+0.01 mg/L NAA+30 g/L蔗糖中增殖和生长状况较好;摘除顶芽可促进丛生芽增殖,但增殖系数较低.[结论]成功诱导出了华山松不定芽并实现了其快速增殖.     

茶园土壤氟的生物有效性研究

[目的]评价茶园土壤氟的生物有效性.[方法)利用我国典型茶区21个土壤样品进行茶苗盆栽试验,探讨表征茶叶氟吸收的主要形态.[结果]不同土壤上生长的茶苗茶叶氟含量的差异叶较茎、主根和吸收根大.茶苗叶片氟含量和氟积累量随着土壤水溶性氟和稀盐浸提态氟含量的升高而显著增加.土壤全氟含量对茶苗各部分氟含量均没有显著影响.[结论]土壤水溶性氟和稀盐可浸提态氟是表征土壤氟生物有效性的良好指标.     

不同氮肥和赤霉素水平解除PP333对高羊茅生长影响的研究

[目的]探讨解除温室环境下PP333对高羊茅(Festuca arundinace)生长抑制的措施.[方法]在高羊茅移出温室后用不同水平的氮肥和赤霉素对其进行处理,观察高羊茅生长变化情况.[结果] 氮肥能提高高羊茅的株高、茎粗、叶长和叶宽,增加分蘖数,但与对照相比这种效果差异不显著,同时根长与对照相当;赤霉素能提高高羊茅株高、叶长,且与对照相比差异达到极显著水平,但施用赤霉素的处理茎粗、分蘖数和叶宽小于对照,根长与对照相当.施用氮肥的处理与移栽前的高羊茅相比,各指标的增幅变化不大,而施用赤霉素的处理,株高和叶长与移栽前的高羊茅相比增幅变化很大,分别达450%～650%.[结论]在施用赤霉素时,同时施用适量的氮肥,能使赤霉素解除PP333对高羊茅生长抑制的效果更好.     

大红袍茶降血糖作用研究

[目的]探讨大红袍茶的降血糖作用.[方法]取50只小鼠以200 mg/kg剂量、间日2次腹腔注射四氧嘧啶制造高血糖模型,4 d后得到24只血糖高于9.00 mmol/L的高血糖模型小鼠.将高血糖小鼠按相似血糖水平分为对照组和试验组,血糖值分别为(15.11±6.47)和(14.77±5.40)mmol/L,组间无显著差异(P＞0.05).对照组饲喂基础饲料和凉开水,试验组在基础饲料中添加3.0%的大红袍茶,饮0.5%的大红袍茶汤.饲养7 d后再次测定血糖值,研究其变化.[结果]对照组小鼠血糖值为(12.23±5.11)mmol/L,无显著变化(P＞0.05);试验组小鼠血糖值下降到(7.93±1.88)mmol/L,降低了46.3%,变化极显著(P＜0.001).[结论]大红袍茶对高血糖小鼠有极显著的降糖作用.     

茶树EST-SSRs在山茶科植物中的通用性研究

[目的]研究茶树EST-SSRs在山茶科植物中的通用性.[方法]选用来源于茶树EST序列的7对EST-SSRs引物,对山茶科植物的19份材料进行了扩增.[结果]7对EST-SSRs引物中有5对引物能对19个供试材料进行有效扩增,通用性比率为71.43%;扩增率最高的为云南山茶凤山茶、华东山茶彩霞和云南山茶菊瓣,最低的为川滇莲蕊茶和大花杨桐;有效扩增的5对引物对中有4对引物在供试材料中表现出丰富且差异明显的多态性.[结论]从茶树基因组上开发的SSR引物在山茶科植物不同种属植物间有较高的通用性,可用于山茶科植物比较基因组研究和分析标记研究.     

不同盐碱土壤上紫花地丁生长动态研究

[目的]研究紫花地丁的耐盐碱能力.[方法]以紫花地丁实生苗为试验材料,将其移栽到不同pH的盐碱土上,观察土壤盐碱胁迫对移栽紫花地丁幼苗生长动态的影响.[结果]在含盐量5.2和6.4 g/kg的盐碱土上,紫花地丁幼苗生长速率较在对照土壤上显著降低,分蘖能力显著下降;但是,移栽到含盐量3.6 g/kg的试验地中的紫花地丁,其株高、叶片数并没有明显差异,分蘖数和生物量略低于对照土壤,但对紫花地丁的整体生长影响不大.[结论]该研究分析了紫花地丁在3种土壤上的生长动态,为紫花地丁在盐碱地上的应用提供依据.     

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。     

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。     

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.     

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)     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.