降雪污染中微量铝、氟电位法测定与环境相关因素研究

文中采用预示终点电位滴定测定微量铝,方法加标回收率在94%～103%,标准添加法测定微量氟,方法加标回收率在97%～101%,结果可靠。

影响女性不孕症的环境相关因素研究

目的:探讨研究女性不孕症的环境相关影响因素,为不孕症的预防和治疗提供临床参考资料。方法:选取2009年8月-2012年8月本院收治的215例不孕症患者作为研究对象,回顾性分析总结患者的相关临床资料,同时对所有患者的人际关系和心理健康状况进行调查。结果:影响不孕症患者的环境相关因素主要包括妇科炎症、月经不调、房屋装修、输卵管病变和人工流产等,且患者受单个或是多种相关因素影响,同时患者的心理健康状况与不孕症的发生也有密切关系。结论:多种环境相关因素会导致女性不孕症的发生,因此积极预防治疗妇科炎症、输卵管病变等妇科疾病,降低人工流产,避免接触有毒有害物质,进行有效的心理疏导等,这些都是女性不孕症防治的关键,同时应增加对女性进行生殖系统健康方面的宣教工作,做到防患于未然。

上市公司理财目标确定的影响因素分析

科学的界定上市公司理财目标，对于优化公司理财行为和公司长远发展具有重大意义，确定上市公司理财目标前应考虑其与相关利益关系人和所处环境的因素影响。本文主要通过影响上市公司理财目标确定的主观利益主体因素和客观相关环境因素进行分析，力图促使上市公司理财目标的确定得以合理化、协调化和科学化。

农村幼儿入园适应及其相关环境因素的分析

在社会、时代不断发展的今天,教育在我国的重视度也有了更高的体现。教育需要从幼儿抓起,让孩子从小就养成较好的学习习惯、思维方式。幼儿园生活,也是幼儿从单一家庭生活走进集体生活的转折点,对于幼儿来说具有非常重要、积极的意义。通过对小班幼儿从入园前到入园适应进行相关调查分析,记录幼儿从不适应到适应的整个过程的一些资料。并在家长、孩子的共同配合下,创设出与之相适应的活动及环境。本文简要分析农村幼儿入园适应及其相关环境因素的影响。

Review of Soil Nutrients of Forest Nature Reserve

Based on a large number of relevant literatures, the effects of environmental factors and human factors on forest soil nutrients in nature reserve were summarized, as well as the soil quality assessment and correlation of soil. nutrients, to provide references for a deep research on forest nature reserve soil and its protection. The distribution of forest soil nutrients has significant spatial heterogeneity, and its final distribution pattern is the result of joint action of environmental factors, including topography, vegetation, soil type, seasonal change as well as soil microorganism, and human factors. In natural ecosystem, environmental factors are the main factors that determine the differences of soil nutrients. Effective human management can promote the accumulation of forest soil nutrients, but improper interference will cause a significant loss of soil nutrients. Accurate soil quality evaluation can objectively clarify the impact of different soil management practices on soil, contributing to the timely adjustment of management measures. The establishment of long-term soil monitoring stations in forest nature reserves is a good way to master the influencing factors and the mechanism of forest soil nutrients, and can ultimately provide theoretical guidance for a sustainable and healthy operation of forest nature reserve.