Background: There has been a rapid global development of the horizontal drilling and hydraulic fracturing process termed fracking. This involves the dispersion
贵阳是个很不错的地方,可以说是冬暖夏凉,夏天不那么热,冬天也就0℃在什,而且冷的时间很短,所以贵阳人常常很自豪地称自己居住的这塍城市像一座“舂城”。然而上印那场极端的雪灾
对于西藏,一直有着莫名的向往,也许是因为那片神秘的土地上有某些令我心动和神往的东西。现在,在回到上海后的半个多月里,我常常想起那些在西藏的日子,不长,却有着神圣、不可亵渎的
The goal of this study is to analyze the relative contribution of different emission source categories to ozone in the Houston-Galveston-Brazoria (HGB) area of
Biota samples were collected seasonally during three consecutive years from the Egyptian costal region along the Mediterranean Sea for analysis of Zn, Cu, Cd, P
我局竖井矿井下采掘工作面讯号传递,多年来一直使用127伏讯号线,该系统操作电压高、电流大,出事故时不易查找。该矿于1978年8月24日,因掘进工作面讯号线短路发生火
“Kick the habit! Towards a low carbon economy!”
In order to clarify the impact of activated carbon and anion exchange resin on photocatalytic oxidation (PCO) of textile industry wastewater, TiO2-based PCO was
胃癌根治性切除术是迄今治疗胃癌的一项重要方法,但术后仍存在较高的复发率而使治疗最终失败。作者对1998年1月~2007年12月本科收治的85例胃癌术后复发的病例进行回顾性分析,旨
Following a half century of popularity, central place theory experienced 20 years of neglect when the new urban system theory of network modeling gained attenti