环氧丙烷生产中氯流失对水的污染及其防治措施

随着我国工农业生产的发展,人口的不断增加,工业废水、废渣的排放,致使城市水污染问题越来越严重,所以应当积极采取措施,防止污染.     

Sinopec Sees Significant Growth for Net Profit in 2007

China Petrochemical Corporation （Sinopec）, a leading oil refiner, posted a net profit of 70 billion yuan （9.63 billion U.S. dollars） in 2007. Sinopec made a net profit of 50.66 billion yuan in 2006. The huge profit can be attributed to cost control, resources integration and technological innovation, according to Cai Xiyou, a senior executive of Sinopec.     

义县下生木营子——车坊压性断裂地下水赋存特征

本文从地质构造、岩性特征、地下水赋存条件和分布规律等方面,较详细的论述了下生本营子——车坊断裂地下水赋存特征,同时指出压性断裂影响岩带是地下水富集的最有利部位。     

新桥硫铁矿一期坑采接替延伸工程开工建设

铜陵化学工业集团有限公司新桥硫铁矿一期坑采 6 0万ｔ/ａ硫铁矿工程的接替延伸工程于 7月 8日正式开工建设。该工程总投资 80 0 0万元 ,预计可采工业储量2 10 0万ｔ ,按年采 6 0万ｔ规模计算 ,服务年限 35年左右。该工程采用主副井原位延伸法 ,将原一期坑采的 - 2 30ｍ中段分别下延至 - 2 70ｍ、 -330ｍ、- 330ｍ三个中段 ,基建期预计为两年半。此项工程的设计方案于 1998年 11月 30日通过专家审查 ,今年 2月对其中的部分工程进行了招标 ,安徽省中煤三建第三十工程处中标承建其中的主井井筒掘、砌等工程。该项工程的开工建设将为新桥矿调整…     

Hi-tech Researches Speed up Scientific and Technological Innovations of CNOOC

The scientific and technological development of CNOOC Limited entered a new stage during the Tenth Five-Year Plan period. High-tech researches in the company have catalyzed the technological innovation of the offshore petroleum industry. By undertaking 11 key projects concerning key technologies for exploration and development of giant Bohai oil field under China＇s National 863 Program, 24 sub-projects of CNOOC＇s projects matching with China＇s National 863 Program, and 10 sub-projects of National Key S ＆ T Special Projects through cooperation with Chinese Academy of Sciences, the company developed 10 technology series with intellectual property rights.     

Chinese Oil Industry Faces New Challenges

Chinese petrochemical companies should gird for new challenges in three years, triggered by cost-competitive products flooding in from overseas, especially the Middle East countries. This advice was highlighted by company executives and association leaders during a discussion on the sidelines of a petrochemical conference organized by the China Petroleum and Chemical Industry Association in early April.[第一段]     

Preparation of an adhesive in emulsion for maxillofacial prosthetic

Maxillofacial prostheses is a dental medicine specialty aimed at restoring anatomical facial defects caused by cancer, trauma or congenital malformations through an artificial device, which is commonly attached to the skin with the help of an adhesive. The purpose of our research was to develop a pressure-sensitive adhesive (PSA) based on acrylic monomers, characterizing and determining its drying kinetics, that is to say the time it takes to lose 50 to 90% of its moisture. The adhesive synthesis was realized by means of emulsion polymerization; the composition of formulations was: (AA-MMA-EA) and (AA-MMA-2EHA) with different molar ratios. The formulation based on (AA-MMA-2EHA) with 50 w% of solids, presented good adhesive properties such as tack, bond strength, and short drying time. We propose this formulation as a PSA, because it offers an alternative for systemically compromised patients, by less irritation compared to organic solvent-based adhesives.     

Changes in soil sealing in Guadalajara (Spain): cartography with LANDSAT images

The great urban and industrial development of the towns surrounding Madrid has caused an irreversible and rapid soil loss. In this paper, soil sealed evolution in Guadalajara province during the past 15 years, mainly in the capital, industrial district and small municipalities near Madrid, has been studied. This province has experimented a sharp reduction of the most fertile soils, located on the Henares valley, due to the action of new models of local and regional development. The main goal of this paper is the mapping of the covered soils in a pilot area of Spain. Supervised classification of Landsat images from 1989 to 2002 has been carried out. Geo-referred image analysis allows us to detect precisely the amount of covered soils and where this phenomenon has taken place.     

Assessment of olive cake as soil amendment for the controlled release of triazine herbicides

Organic matter-rich agricultural by-products are being produced in huge quantities and can be applied to soil as a disposal strategy. The application of two different rates (2 and 8% w/w) of olive cake to a Mediterranean calcareous soil resulted in an increased sorption of four triazine herbicides, which was higher for the more hydrophobic compounds (terbuthylazine and prometryn) and lower for the more polar ones (simazine and cyanazine). However, when the sorption coefficients were normalised to the total soil organic carbon (K(oc)), the results did not significantly differ between simazine and cyanazine which is an indication that the olive cake did not exert different sorption capacity for both compounds. On the contrary, K(oc) values for terbuthylazine and prometryn increased in the amended soils. Our results from experiments using mixtures of several pesticides suggest that competition for sorption sites resulted in a decrease of herbicide sorption. Desorption was hysteretical both for the amended and unamended soils, but the addition of olive cake at the highest dose diminished desorption of most of the herbicides. In conclusion, the addition of olive cake behaves as a promising method for reducing the risk of groundwater pollution by pesticides.