加工含硫渣油对焦化装置的危害及防治对策

分析了焦化装置在加工含硫渣油过程中设备腐蚀的原因.并结合装置实际提出了相应的防治对策.     

Postural evaluation in a poultry farm for broiler chickens

The goal of this study was to evaluate working postures in 9 operations of poultry farming for broiler chickens for 14 body segments with 4 categories, and for fingers with 14 categories. Overall, the farmers commonly bent almost all their body segments and used power grips. The operations of cleaning with water wand and inspecting chickens seemed light work because the farmers walked around most of their working time. The operations of detaching base from hanging feeder and attaching base to hanging feeder had the farmers continue squatting to handle the feeders close to the floor. The farmers also repeatedly bent their trunks in shoveling feces, unloading a box of chicks, and releasing chicks. A power grip was frequently observed due to using tools with round handles. Workplace design to raise working height would be necessary for a better working environment for broiler farmers.     

Effect of soil acidification on yield and quality of tea tree in tea plantations from Anxi county,Fujian Province北大核心CSCD

In order to investigate the effect of tea tree rhizosphere soil acidification on yield and quality of tea tree, the pH value, yield, and quality index of fresh tea leaves of different ages were analyzed, and the correlation between rhizosphere soil acidification and ages, yield, and quality index were studied from nine tea plantations in Anxi county, Fujian Province. The results showed that 37.67% of the nine soils were acidified, and 10.03% of them were suitable for planting tea tree. Furthermore, the results indicated that the age of tea tree was significantly and negatively correlated with the soil pH value, as shown by a decrease in soil pH values associated with an increase in tree age. In addition, the yield of spring and fall crops of tea from these nine plantations were all significantly and positively correlated with the pH value, with correlation coefficients distribution values of 0.912-0.952 and 0.898-0.973, respectively. In addition, quality indices, including polyphenols, theanine, and caffeine for the nine tea plantations were all significantly and positively correlated with their soil pH values, and their correlation coefficient distribution values were 0.897-0.959, 0.908-0.974, and 0.907-0.975, respectively. Above all, as tea tree ages increased, rhizosphere soil acidity was significantly increased, and yield and quality of tea presented a statistically significantly up/down trend. © 2018 Science Press. All rights reserved.     

建设生态文明的重要举措——《让不堪重负的江河休养生息》述评

让江河湖泊休养生息，就是要实行最为严格的污染物排放总量控制制度，以水环境容量确定发展方式和发展规模；就是要尊重自然规律，充分发挥水生态系统的自我修复能力，逐步改变环境恶化状况；就是要综合运用工程的、技术的、生态的方法，加大治理水环境的力度，促进水生态系统尽快步入良性循环的轨道；就是要充分运用法律、经济和必要的行政手段，既要形成严格排放、合理开发的强大压力，又要形成主动治理水环境的积极动力，用高效的办法解决长期积累的环境问题。     

试论中国环境保护的历程和发展趋势

中国的环境保护经历了70年代初“三废处理”、70年代末“依法保护环境”、80年代“城市环境综合整治”和90年代“可持续发展战略”的发展历程。中国的环境保护要坚持以可持续发展战略为指导、污染防治与生态保护并重、环保与发展综合决策的发展道路。     

秦皇岛市气候变化对可持续发展的影响及对策

秦皇岛市46年来气候变暖变干,年平均气温提高1.8℃,≥10℃年积温增加11.4％,无霜期延长22天,但年平均降水量却减少11.5％。这对农业和工业的影响弊大于利,对旅游业的影响则有利有弊。为此应趋利避害,加强水资源的开源节流,发展节水经济和循环经济,发展休闲度假旅游,延长旺季。     

空气氧化法处理含SO3^2—废水

本文通过作者在日本研修期间的实验,对无机废水中SO_3~(2-)的空气氧化处理法作了探讨,并提出了几个表达式,供同行参考。这种方法能在较短时间内处理大量废水,而且操作简便,易于推广。     

地壳突发性放气与水灾行为关系的研究

本文阐述了由于１９９４年９月１４日台湾海峡７．３级地震孕震应力场作用而引起大面积突发性放气，导致１９９４年第２４号台风行为不规律的机制。地震本身可给人类造成灾难，而在某些条件下也可能引起其它灾难。     

1954、1998年长江两次特大洪灾形成原因及防治对策初探

１９９８ 年长江中下游地区发生的特大洪水具有洪水水位高、洪量大、历时长的特点, 这次洪水灾害造成的直接经济损失超过了２ ０００ 亿元。本文在长江上中游地区降水量总量及强度超常、长江上中下游洪水遭遇严重、分洪区没能发挥作用等洪灾形成主要原因进行分析的基础上, 提出了加大对影响长江流域灾变性气候的研究、调整江湖水系结构、加强区域间防洪的协调和协作等对策建议。     

土壤氧化还原电位测定方法的探讨与研究

是选用铂电极直接测定法来测定土壤的氧化还原电位,该方法是采用铂电极作为氧化还原电极,饱和甘汞电极作为参比电极,两者之间存在电位差的原理而测得的。通过大量的试验数据,表明该方法是简便易行的,对于一般的土壤都有实际参考价值。最后,对此过程中遇到的问题进行了深入的探讨和研究,并提出了具体解决方案。