Referential significance of sulfur isotopes and separation of S species in black shales of Southwest China

The states of S species in black shales are very complex, such as organic sulfur, pyrite sulfur and sulphate sulfur. The mineral microtexture, sulfur content and sulfur isotope can indicate the formation conditions and diagenetic processes of the black shales. The S species are separated perfectly and the relation between the content, mineral microtexture and sulfur isotope composition of the sulfur mineral is assessed. These complementary approaches provide people a new insight into the formation conditions of the black shales and redox conditions of Precambrian and Cambrian in Southwest China.     

黑板条干检测仪器化的一种方法

本文讨论了一种把表示纱线不匀信号转变为黑板模型的方法及该模型的建立。按照黑板法检测的标准,拟出了13个能体现模型特征的特征参数;并讨论了对该模型进行识别和评级的方法。提出了这种方法能用在所有检测纱线不匀的仪器上,经作者在研制的仪器上实验,表明是可行的。     

论光影设计中的黑与白

文章针对黑色与白色进行举例，介绍了两者在宇宙及其现代人们生活中的关系。     

THE SHEAR-THINNING PHENOMENON OF BAGASSE KRAFT BLACK LIQUOR FLUID

INTRODUCTIONKraft black liquor composition is very complicated. Generally, it is a complex and multiphase fluid, which consists of organic and inorganic components. The total solids content in black liquors has a great effect on its fluidity and deformation. To the wood black liquor, there have already been detailed researches on their flow properties and many theoretic or practical results have been concluded in the literatures [1-8]. But to non-wood black liquor, the previous researches…     

一般球对称带电动态黑洞的量子熵

在Tortoise坐标系中,利用brick-wall模型研究了标量场对一般球对称带电动态黑洞熵的量子修正.当黑洞事件视界不随超前时间变化时,结果可回到已知的静态情况.     

榆树市黑土流失成因及治理对策

榆树市是全国农业大县,是国家重要的粮食生产基地,同时也是水土流失十分严重的地区。本文重点研究了榆树市水土流失的成因、规律及危害。并在此基础上,结合榆树市的基本地理特点与社会经济发展实际情况,提出了水土流失综合防治的具体对策。     

苄基环戊二烯的相转移催化合成

碱性不介质中和四丁基溴化铵存在下，环戊二烯和氯化苄反应，合成了苄基环戊二烯。     

畸形生活下的女性--评莫里森的小说《宠儿》

黑人也是人,但却因为特定的历史原因使得他们有了特定的称谓:奴隶.生活在奴隶制下的黑人,身心都饱受摧残,变得失去自我.赛丝,一个在白人机制欺压下存活的女黑奴,虽然她得以从奴隶制下的畸形黑暗生活中逃脱出来,但却始终没能逃脱出那种制度带给她的创伤以及精神上的折磨.她对宠儿的爱是深厚的,但却也是畸形的,带有愧疚心理的爱,一种令她无法走出自我的爱,令她堕落的爱.     

羊肠毒血症的发生与防治

从１９９６年９月下旬起，会理县鹿厂镇星火村的黑山羊陆续发病，至１９９６年１０月上旬，共发病２８只，死亡１５只．经临床症状观察、尸体剖解和实验室诊断，结合流行病学分析，确诊为羊肠毒血症．通过及时采取防治措施，控制了该病流行