班主任工作如何营造培养创新人才的环境

木文从营造环境的角度，论述了学校教育环境与培养创新人才‘的关系，以及班主任在学校教育环境中所起的作用，重点阐述了班主任工作在营造培养创新人才‘环境中的具体做法。     

马克思关于农业发展两条道路的思想

马克思的农业发展理论实际上经历了前后两个阶段的变化。早期,马克思强调西欧,特别是英国的经验,将农奴制下的农村公社—自耕小农土地所有制—资本主义雇佣型大农业—社会主义集体合作制大农业的发展序列作为人类社会农业发展的唯一道路。晚年,马克思的农业发展理论发生了转变,特别是对农村公社,以及自耕小农土地所有制和资本主义大农业的发展问题产生了新的认识。他认为农村公社包含了公有与私有两重因素,因而,农业发展道路并不是唯一的,完全有可能通过公有因素战胜私有因素使农村公社直接过渡到社会主义集体合作制大农业,而不必经过自耕小农土地所有制和资本主义大土地所有制的发展阶段。     

Reassessment of phosphorus and nitrogen discharge from commercial carp feeds

ABSTRACT:   The present study, one in a series to clarify the phosphorus (P) and nitrogen (N) loading from carp culture, evaluated four commercial diets. The total and available P in these diets varied from 1.57 to 1.86% and from 0.38 to 0.87%, respectively. The control diet, selected based on an earlier experiment, contained 1.40% total P and 0.68% available P. The 7-week feeding trial was performed with juvenile carp. Superior feed gain ratio was obtained for the control diet (1.00) and it varied from 1.19 to 1.56 among the commercial diet groups. Similarly, the control diet showed higher rates of P absorption (43.8%) and retention (33.1%) than the rest (absorption: 18.1–40.9%; retention: 10.7–18.7%). Total P loading (kg/t production) was 10.0 for the control group but ranged from 19.1 to 25.0 among the commercial diet groups. Nitrogen absorption was not markedly different; however, fluctuations in retention resulted in N loading (kg/t production) that ranged between 47.1 and 66.3 among the commercial diets, higher than the 34.8 obtained for the control diet. The available P in the commercial diets rarely matched the requirement level, thereby negatively affecting the waste loading. The superior performance of the control diet underscores the fact that effective formulations help in keeping emission levels low.     

The Effects of the Environment Stress on the Plant Secondary Metabolites

Plant secondary metabolism results from the interaction between plant and environment (life and nonlife) during a long period of evolution of plant. Secondary metabolites are very important for plant to adapt to its surrounding and to improve its abilities of protecting itself and struggling for existence. The secondary metabolites are more relative and more homologous than the first ones. The variety of environment stress tremendously affects the forming of plant secondary metabolites.The progress of study about how the environment stress affects plant secondary metabolites forming is introduced.     

供暖锅炉消烟除尘装置的选择

各种锅炉消烟除尘设备都有自己的使用范围,本文主要介绍了供暖锅炉在消烟除尘选用中应考虑的问题,阐明选用消烟除尘设备时要充分了解其技术范围及其经济性能。     

基于GIS的城市网吧管理研究

网吧管理是当今社会面临的一个热点问题。本文以泰安市城市网吧地理信息系统为例，论述了以高分辨率卫星遥感影像为主要信息源，基于GIS的城市网吧地理信息系统的建立以及实际应用，为网吧管理的时空化提供了有意义的理论与实践。     

解决中小企业融资难问题的途径

中小企业是构造市场经济的主体，是推动国民经济发展，促进社会稳定的基础，在确保国民经济适度增长、缓解就业压力、实现国有经济战略调整、优化经济结构等方面发挥着日益重要的作用．但中小企业在发展过程中往往出现资金紧张，融资难的问题，改善内部融资环境是解决中小企业融资难问题的有效对策．     

发电机原动系统仿真器程序设计

研制了一种新型的基于80C196KC单片机的原动机仿真系统的软件．对系统中的调速器，利用灵活的单片机的软件去实现其功能，不仅使硬件线路大为简化，并且克服了模拟电路结构复杂、电子元器件容易老化、易受环境温度影响和抗干扰能力差等缺点，提高了整个系统的控制精度、可靠性和稳定性．此外还设置了液晶显示器和人机通讯接口，可将原动机仿真系统的运行参数以数字信号的形式传输到监控系统或者PC机，操作直观、便于监视．微机软件编写采用了模块化，使软件的编写更方便、简单，软件已完全通过调试，达到了预期的效果。     

MAGNETIC RESONANCE IMAGING OF CANINE DEGENERATIVE LUMBAR SPINE DISEASES

Degenerative lumbar spine diseases, i.e., sacrolumbar stenosis, intervertebral disk degeneration and protrusion and spondylosis deformans of the canine lumbar spine were studied in eleven canine patients and three healthy controls using radiography and 0.02 T and 0.04 T low field magnetic resonance imaging. The T1 and T2 weighted images were obtained in sagittal and transverse planes. The loss of hydration of nucleus pulposus, taken as a sign of degeneration in the intervertebral disks, could be evaluated in both T1 and T2 weighted images. As a noninvasive method magnetic resonance imaging gave more exact information about the condition of intervertebral disks than did radiography. Sacrolumbar stenosis and compression of the spinal cord or cauda equina and surrounding tissue could be evaluated without contrast medium.     

催青环境及分段收蚁对原蚕性别调控研究

试验结果表明 ,通过改变催青环境和分段收蚁可以人工调控家蚕的性别比例。在原种催青期中高温干燥处理 ,可使原蚕品种 872和鲁玉 蚕比例分别提高 1 3 %和 2 4% ,达极显著和显著水平 ;对原蚕 795和871品种分段收蚁 ,第 1天可提高♀性比例 1 0 %～ 2 0 % ,最后一天 (第 3天 )提高 蚕比例 ,795品种最高为2 8%～ 3 6% ,达极显著水平。