云南大理洱海公园规划设计

在白族园林特点、绿色浮岛特色、城市森林气势、园林景观美学价值和实用功能等5个设计理念指导下,将大理洱海公园规划为北片山林及滨海区、中部山体主景区、南部城市背景林区、东部健身休闲区4个分区,并对其进行了概念性设计,还对道路系统、灯具系统和建筑小品布局和规划特点进行了分析.     

欧文氏杆菌CXJZ95-198基因组文库的构建

采用改良鸟枪法构建了草本纤维精制高效菌种Erwinia carotovora CXJZ95-198的基因组文库，结合透明圈法，筛选到了8个甘露聚糖酶基因阳性克隆，并采用PCR方法对它们进行了分析鉴定，结果表明它们含有同一个甘露聚糖酶基因。     

STUDIES ON DYSTOCIA AND BIRTH WEIGHT IN ANGUS HEIFERS CALVING AT TWO YEARS OF AGE

A trial is described in which groups of Angus heifers mated as yearlings were maintained on two widely differing nutritional levels during the last third of gestation in order to study effects on birth weight of calves and dystocia. The different nutritional levels produced a 5 lb difference in birth weight of calves (P < 0.01). As the calving season advanced the mean calf birth weight increased by 1.4 lb every ten days (P < 0.01). Heifers that suffered dystocia had calves 7 lb heavier and pelves 15.6 sq cm smaller than heifers calving normally (P < 0.01). Following observations on the birth process it was concluded that uncomplicated birth is complicated within two hours following the appearance of the amniotic sac.     

East coast fever: 3. Chemoprophylactic immunization of cattle using oxytetracycline and a combination of theilerial strains

In the first of two experiments performed, 29 animals were immunized by chemoprophylaxis against either a combination of three theilerial strains, Theileria parva (Muguga), T. parva (Kiambu 5) and T. lawrencei (Serengeti transformed), or against one or two elements of the combination separately, and then challenged with either T. parva (Kiambu 1) or T. lawrencei (Solio KB1), both of which were known to be heterologous to T. parva (Muguga). The animals immunized against the combination had mild or inapparent reactions to challenge, whilst the susceptible control cattle and many of those immunized against one or two strains either had severe reactions of died.In the second experiment, 17 cattle immunized by chemoprophylaxis against the combination were challenged with lethal doses of three theilerial strains, T. parva (Entebbe 1), T. parva (Entebbe 2) and T. parva (Ukunda), recently isolated from two widely separated areas of East Africa. They had mild or inapparent reactions whilst 13 of 15 susceptible control cattle died.Chemoprophylaxis using a combination of theilerial strains and a limited oxytetracycline regimen was shown to be an effective means of immunizing cattle against East African theilerioses. The use of this technique as a method of immunizing cattle before exposure in the field is proposed.     

Epizootic of anthrax in Falls County, Texas.

An epizootic of anthrax in Eastern Falls County, Texas, killed at least 238 animals during a 6-week period ending July 31, 1974. Infection appeared to be caused by the ingestion of contaminated soil and grass in the drought-stricken central Texas area. The participation of the Texas Department of Agriculture, the Texas National Guard, and other state agencies was of great assistance to the Texas Animal Health Commission in handling the epizootic and panic stricken public. Use of the unencapsulated Sterne strain spore vaccine was credited with preventing many livestock losses in the area. Contaminated city water was detected during the epizootic but human disease did not result.     

Low concentrations of zearalenone in diets of boars for a prolonged period of time

Thirty-two boars were fed diets containing 0, 3, 6 or 9 ppm zearalenone from 32 d of age up to 145 or 312 d of age. Rate of gain, feed intake and gain:feed were not significantly different among treatments. Feeding of diets containing 9 ppm zearalenone did not affect the libido in seven boars. There was a tendency for boars fed 9 ppm dietary zearalenone to produce lower total and gel free volumes of semen, with lower total motile sperm; however, only the percent motility of the sperm was reduced (P less than .05).     

Ca~（2＋），CaM与花朵衰老的关系

对君子兰（ＣｌｉｖｉａｍｉｎｉａｔａＲｅｇ．）、牡丹（ＰａｅｏｎｉａｓｕｆｆｒｕｔｉｃｏｓａＡｎｄｒ．）、令箭荷花（ＮｏｐａｌｘｏｃｈｉａａｃｋｅｒｍａｎｎｉｉＨａｗ．）等三种不同寿命的花，在盛开与衰老时的可溶性总蛋白、内源总Ｃａ２＋水平以及总ＣａＭ含量进行了对比试验。结果表明，三种花衰老时可溶性总蛋白含量均下降，但长寿花比短寿、中寿花含有更高水平的蛋白质，并且水解速率较低；三者都有较高的内源总Ｃａ２＋及ＣａＭ水平。这些提示内源Ｃａ２＋、ＣａＭ水平与花的寿命有一定的相关性。     

Studies on vitamin E and selenium deficiency in young pigs. III. Effect on kinetics of erythrocyte production and destruction.

The effect of vitamin E and/or selenium deficiency on the kinetics of erythrocyte production and destruction has been investigated in swine. The plasma iron turnover rate, 59Fe incorporation into newly formed red cells as well as the 51Cr apparent red cell half-life, were not found to be significantly affected by either vitamin E deficiency, selenium deficiency or deficiency of both, as compared to replete animals. The results of this study suggest that vitamin E is not a limiting factor for normal erythropoiesis in young growing pigs. Erythropoiesis appeared, however, to be slightly decreased in selenium deficient pigs and will need to be further investigated.