Preparation,characterization, and Cd(II) sorption of/on cysteine-montmorillonite composites synthesized at various pH

Environmental Science and Pollution Research - Montmorillonite-cysteine could be used as the immobilizer, detector, and detoxifier of heavy metals. To further the understanding and the application,...     

SLC16A1-AS1 enhances radiosensitivity and represses cell proliferation and invasion by regulating the miR-301b-3p/CHD5 axis in hepatocellular carcinoma

Environmental Science and Pollution Research - Hepatocellular carcinoma (HCC), a common type of human malignancies, leads to increasing incidence and fairly high mortality. An increasing number of...     

两级曝气生物滤池实用性综合分析

两级曝气生物滤池工艺主要特点是体积小、处理效率高、出水水质好、流程简单,集生物氧化和截流悬浮固体于一体,在有效去除水中的有机物的同时,脱氮效果良好。该工艺不设二沉池,节省了基建投资,且自动化控制水平高,也降低了运行成本。本文综合介绍了该工艺的工艺流程、设计要点、技术经济分析和运行状况等。     

石煤渣制橡胶填料的研究

以钛酸酯偶联剂为表面处理剂,对石煤渣进行表面改性处理,制得橡胶填料,测试了该填料对橡胶的补强作用,并与陶土、碳酸钙、炭黑等填料的补强性能进行了比较。实验表明,表面改性后的石煤渣填料对橡胶具有较好的补强作用,可完全替代碳酸钙、碳酸镁或陶土,产生较好的补强效果,用替代部分炭黑,可以减少炭黑用量,降低橡胶成本。     

Gastroschisis: sonographic diagnosis,associations, management and outcome

Gastroschisis is a defect in the abdominal wall, typically on the right side of a normally inserted umbilical cord through which bowel and other abdominal contents herniate. Classically, no membrane covers the herniated abdominal contents, which distinguishes the defect from exomphalos, an important differential diagnosis. Gastroschisis is usually diagnosed prenatally using ultrasound examination. The prevalence is increasing worldwide from approximately 0.1 per 10 000 total births in the 1970s to over 5 in the early 2000s. The reasons for this are unknown, but factors such as maternal smoking, recreational drugs and young maternal age are strongly associated with the defect. The increasing prevalence is causing concern because the cost of treating gastroschisis is high. Neonatal morbidity depends on significant complicating factors such as bowel atresia or necrosis and prolonged post-operative ileus. Foetuses with gastroschisis are more likely to be born premature and with intra-uterine growth restriction, both of which contribute to the morbidity. Gastroschisis requires early surgery after birth, often followed by prolonged neonatal care. However, advances in surgical and post-operative care in the last decade have meant that currently 90% of affected neonates survive, with few long-term problems. Copyright © 2008 John Wiley & Sons, Ltd.     

Bi-level fuzzy optimization approach for water exchange in eco-industrial parks

In order to minimize the consumption of resources and the generation of waste, eco-industrial parks (EIPs) have been designed to encourage the establishment of waste exchange networks between the plants contained within them. Considering that the participating plants have their individual fuzzy cost goals and that the park authority has the objective of minimizing total freshwater consumption in the EIP, this problem may be formulated as a bi-level optimization problem, with the park authority as the upper-level decision-maker. A bi-level fuzzy optimization model is developed to explore the effect of charging fees for the purchase of freshwater and the treatment of wastewater in optimizing the water exchange network of plants in an EIP. The effect of subsidizing exchange of streams between plants is also included in the model. Results show that it is not necessary to impose exorbitant fees, nor to completely subsidize costs associated with recycling, in order to induce significant reduction of the consumption of freshwater in the EIP.     

Resource-based cities (RBC): a road to sustainability

Resource-based cities (RBC) have made momentous contributions to urbanization in China. However, as natural resources are exhausted, RBC are facing an enormous challenge. In this paper we put forward a resource-based city sustainability index (RCSI) and a resource-based city coordination index (RCCI), including environmental, social, and economic dimensions, adopted three weight scenarios, and selected 13 cities for study. The results: (a) help locate the problems by analyzing both dimensions and indicators; (b) simulate the trends of how RBC emerged, grew, declined, and regenerated; (c) categorize RBC into four types by integrating RCSI and RCCI; (d) give policy makers a holistic and comprehensive perspective in the future urban regulation and management; and (e) highlight a road to sustainability.     

Institutions,policies and soil degradation: theoretical examinations and case studies in Southeast China

Abstract

Southeast China is one of the severe soil degradation areas in China. This paper theoretically examines the impact of some important institutional arrangements and policies, like land management pattern, the rural off-farm employment, land property change and changes in prices of agricultural products, on soil degradation in this area. It further conducts some case studies to confirm the potential relationship between the institutions & policies and soil degradation, applying the surveyed and the second hand data. The paper at last makes some conclusions and proposes some suggestions on how to promote soil conservation by improving the ways of policy decision-making and the effects of policies on land use.     

Influencing Factors of the Levels of Intensive Use of Typical Industrial Land

The article establishes an evaluation index system of the intensive land use from the perspective of enterprises. It is based on the questionnaire survey and evaluates the levels of the intensive use of the land in the electrical machinery and equipment manufacturing industry in Changzhou, Nantong, and Yancheng of Jiangsu Province. The evaluation result shows that there is obvious difference in the levels of the intensive use of the land in this industry in the three cities. The present article makes a detailed analysis on the causes of the difference. The analysis shows difference in results of the socio-economic and urban development stage, industrial features, population density, and technological progress. Finally, it proposes some suggestions to improve the efficiency of the industrial land use.     

Analysis of BIM application relationship with integration degree of construction environment

As the world pays more attention to low-earbon and sustainable development,there’s a growing trend in architecture,engineering and construction fields to construct greener,more energy efficient and more sustainable buildings with the help of building information modeling(BIM).As BIM application becomes popular in industry,more and more scholars and engineers point out that an integrated construction environment is better for BIM’s fully functional capability.This paper illustrates the relationship between BIM application and an integrated construction environment based on case survey data.It is found that even though an integration construction environment is not necessary in BIM application,the statistical results showed that DBB(design-bid-build)and CM(construction management)modes have great differences in BIM’s application implementation scope and implementation deepness,while DB and CM modes do not.