Dinosaur extinction of the late Cretaceous is an enigma. A scorched earth layer was discovered at the end of the Cretaceous system from drilling cores in west of Nei Monggol in China. And there was a creature interrup...Dinosaur extinction of the late Cretaceous is an enigma. A scorched earth layer was discovered at the end of the Cretaceous system from drilling cores in west of Nei Monggol in China. And there was a creature interruption for 6-8 million years after that period through fossil analysis of the area and the adjacent area. Just in the same system of scorched earth layer, the Polish scientists found the abnormal geo chemical phenomena and high dense universal substances generally contained in meteorite. The authors think, at the end of Cretaceous, many celestial bodies ran into the earth. The collision caused fires all over the world and slowed down the speed of the earth rotation suddenly. The oxygen density decreased sharply. And because of the sudden increase of day length, the biological clock of dinosaur was in the state of chaos. That’s the reason why dinosaurs got extinct. It took a very long time both for the oxygen to return normal for most creatures to live and for the new species fit for new rotation speed of the earth to come into being. That’s why there was the creature interruption after the extinction of the dinosaur.展开更多
Nowadays an alternate source of filler from renewable and plant derivatives are being thought of in rubber industries due to their reliability,environmental and economic benefits.Rice Husk Ash(RHA)a byproduct of the r...Nowadays an alternate source of filler from renewable and plant derivatives are being thought of in rubber industries due to their reliability,environmental and economic benefits.Rice Husk Ash(RHA)a byproduct of the rice milling industry is obtained on partial and as well as full combustion of the rice husks.This ash is a good source of silica,silicates and needle shaped carbon and hence can be used as filler for cements.In the present study,a detailed investigation was carried out to understand the RHA as reinforcing material using mechanical properties and fractography using SEM.The rubbers studied were natural rubber(NR),poly chloroprene(CR)and ethylene propylene diene monomer(EPDM).Interestingly,the RHA added NR stock on open mill mixing generated considerable amount of static charges.The properties of NR were found to be as good as regular formulations.EPDM compounds behaved well during mixing.But the properties were found to be poor.CR-RHA compounds were found to result in higher viscosity and the properties were not as good.The SEM studies showed surprisingly cohesive failure as evidenced with the presence of flow lines and the fibrous filler(RHA)remains embedded in the matrix regardless of the chemistry of the repeating unit,NR,EPDM and the chlorine containing monomer inCR.展开更多
During 2015, marginal scorch symptoms were detected in the production base of indigowoad rootin Hubei, China. On the basis of morphological features and 18S rDNA sequences, the pathogen was identified as Cladosporium ...During 2015, marginal scorch symptoms were detected in the production base of indigowoad rootin Hubei, China. On the basis of morphological features and 18S rDNA sequences, the pathogen was identified as Cladosporium sp. Koch’s postulates were fulfilled by pathogenicity tests on potted indigowoad root seedlings. To our knowledge, this report is the first of marginal scorch on indigowoad root caused by Cladosporium sp. We propose the name “marginal scorch” for the new disease.展开更多
SSI公司（http:／／www．ssionline．com/)日前宣布为Panzer General Ⅲ：Scorched Earth发布一款试玩版本，大小为37．73兆。该游戏的出版商为Mattel互动公司(http：／／www.mattelinteractive．com／)，最低系统配置为Pentium 233处...SSI公司（http:／／www．ssionline．com/)日前宣布为Panzer General Ⅲ：Scorched Earth发布一款试玩版本，大小为37．73兆。该游戏的出版商为Mattel互动公司(http：／／www.mattelinteractive．com／)，最低系统配置为Pentium 233处理器，32兆内存，Windows95操作系统，3D加速卡。展开更多
文摘Dinosaur extinction of the late Cretaceous is an enigma. A scorched earth layer was discovered at the end of the Cretaceous system from drilling cores in west of Nei Monggol in China. And there was a creature interruption for 6-8 million years after that period through fossil analysis of the area and the adjacent area. Just in the same system of scorched earth layer, the Polish scientists found the abnormal geo chemical phenomena and high dense universal substances generally contained in meteorite. The authors think, at the end of Cretaceous, many celestial bodies ran into the earth. The collision caused fires all over the world and slowed down the speed of the earth rotation suddenly. The oxygen density decreased sharply. And because of the sudden increase of day length, the biological clock of dinosaur was in the state of chaos. That’s the reason why dinosaurs got extinct. It took a very long time both for the oxygen to return normal for most creatures to live and for the new species fit for new rotation speed of the earth to come into being. That’s why there was the creature interruption after the extinction of the dinosaur.
文摘Nowadays an alternate source of filler from renewable and plant derivatives are being thought of in rubber industries due to their reliability,environmental and economic benefits.Rice Husk Ash(RHA)a byproduct of the rice milling industry is obtained on partial and as well as full combustion of the rice husks.This ash is a good source of silica,silicates and needle shaped carbon and hence can be used as filler for cements.In the present study,a detailed investigation was carried out to understand the RHA as reinforcing material using mechanical properties and fractography using SEM.The rubbers studied were natural rubber(NR),poly chloroprene(CR)and ethylene propylene diene monomer(EPDM).Interestingly,the RHA added NR stock on open mill mixing generated considerable amount of static charges.The properties of NR were found to be as good as regular formulations.EPDM compounds behaved well during mixing.But the properties were found to be poor.CR-RHA compounds were found to result in higher viscosity and the properties were not as good.The SEM studies showed surprisingly cohesive failure as evidenced with the presence of flow lines and the fibrous filler(RHA)remains embedded in the matrix regardless of the chemistry of the repeating unit,NR,EPDM and the chlorine containing monomer inCR.
文摘During 2015, marginal scorch symptoms were detected in the production base of indigowoad rootin Hubei, China. On the basis of morphological features and 18S rDNA sequences, the pathogen was identified as Cladosporium sp. Koch’s postulates were fulfilled by pathogenicity tests on potted indigowoad root seedlings. To our knowledge, this report is the first of marginal scorch on indigowoad root caused by Cladosporium sp. We propose the name “marginal scorch” for the new disease.
文摘SSI公司（http:／／www．ssionline．com/)日前宣布为Panzer General Ⅲ：Scorched Earth发布一款试玩版本，大小为37．73兆。该游戏的出版商为Mattel互动公司(http：／／www.mattelinteractive．com／)，最低系统配置为Pentium 233处理器，32兆内存，Windows95操作系统，3D加速卡。
