绿色万里--从环保生态走向人文塑造的绿色教育实践

创建绿色大学,实施绿色教育,这是高等教育的一个国际命题和一种全新的教育理念.浙江万里学院组织开展的“绿色万里“,不仅丰富和扩展了绿色学校创建活动的内涵与领域,而且构成了万里教育模式的一个鲜明办学特色,业已成为万里育人的潜性课程和校本资源.     

中美两国大学生学习能力之比较

“二战“后世界上许多重要的科技成就都产生于美国.比如材料科学中的高温超导材料、“万能“塑料和光学纤维,电子及信息科学中的高性能计算机和信息“高速公路“,空间科学中的“阿波罗计划“、GPS全球定位系统、超精细原子钟、空间站的成功,生命科学中的基因分析等等.……     

谈化工企业防火及两种方法在化工企业火灾调查中的应用

化工企业原材料产品是易燃易爆物品,生产工艺复杂,火灾危险性较大,一直都是消防监督工作重点.本文论述了化工企业生产中存在的火灾危险性、预防措施和火灾调查的方法.     

Renal handling of bilirubin photoderivatives

Summary The renal handling of unconjugated bilirubin in the dark and during light exposure was analyzed using an isolated rat kidney preparation. The parameters tested were pigment disappearance from the perfusion medium, pigment uptake by tissue, and its renal clearance. The results indicated that despite the fact that pigment disappearance from the medium was similar for both forms of pigment, the extraction ratio was higher for irradiated pigment than for pigment in the dark. When renal clearance of pigment was plotted vs pigment uptake of tissue, the results indicated that irradiated pigment may be more efficiently removed by the kidney. In addition, data on the rate of secretion of p-aminohippurate suggested that both pigment forms shared a common site for secretion.13 August 1986Acknowledgments. This work was supported by grants from Consejo Nacional de Investigaciones Cientificas y Técnicas (CONICET), República Argentina. The valuable technical assistance of J. Pellegrino and E. Luque is gratefully acknowledged. We are also indebted to Dr S. Bravlavsky (Max-Planck Institut für Strahlenchemie, D-4330 Mülheim a. d. Ruhr, FRG) for stimulating discussion, and to Mr B. Leguizamón for secretarial assistance.     

The role of submandibular glands on extrarenal erythropoietin production

Resumen La extirpación de las glándulas submandibulares en ratas machos nefrectomizadas produjo una marcada disminución en la actividad eritropoyética del plasma, medida por la incorporación de⁵⁹Fe en ratones policitémicos. Este hallazgo es compatible con la formación de eritropoyetina extra renal en esas glándulas salivares.     

硅粉路面混凝土强度特性

掺加矿物细掺料———硅粉是提高路面混凝土使用性能的有效途径。针对重载交通特点,运用正交试验方法,系统研究了硅粉路面混凝土的强度特性,分析了硅粉对混凝土强度的影响,并确定了最优配合比。结果表明,硅粉的掺入虽然对混凝土早期强度不利,但有利于后期强度的提高。在最优配合比条件下,硅粉路面混凝土28d的抗折强度达8.30MPa,而抗压强度达60.83MPa,完全能满足重载交通的要求。     

Activity and reproduction in Megalobulimus paranaguensis (Gastropoda,Eupulmonata): implications for conservation in captivity for a South American land snail

ABSTRACT

In South America, Megalobulimus includes a number of threatened species, as well the largest land snails on the continent. The activity patterns and reproductive aspects of this group have not been documented. This work describes the daily and seasonal activity patterns and reproduction of M. paranaguensis. We maintained specimens in the laboratory for one year, and we quantified their behaviour for one hour at four different times of the day (0 h, 6 h, 12 h and 18 h) during three days in four months (August, September, April and May). The number of postures, hatching rate, time of hatching since oviposition and mortality rate among juveniles for each month were also quantified. Megalobulimus paranaguensis was more active in August, and had a egg laying peak one month after. Fifty-one eggs were laid by 12 captive individuals throughout the year, with a mean value of 4.25 eggs per individual. The hatching rate was 80.39%, and the time of hatching since oviposition was 56.7 ± 4.3 days. In two eggs, we observed the presence of twins. The mortality rate among juveniles was low (9.30%) indicating that rearing land snails in captivity has the potential to be an important and viable tool for the management and conservation of these organisms.