我们利用国家天文台"老虎"超级计算机GPU集群、德国海德堡天文计算研究所的"Titan"GPU集群,进行6万个粒子的并行化高分辨率N体计算,模拟椭圆星系中球状星团的演化,研究椭圆星系的紫外反转现象.结合我们改进的"星系演化并合模型"软件:GALEV,将模拟的球状星团中恒星的数据,如质量、温度、光度、金属度等转换成对应地面或空间望远镜的观测星等,和覆盖远紫外到近红波段的光谱.
A nanocomposite of manganese dioxide coated manganese hexacyanoferrate was synthesized by a facile co-precipitation method and tested as active electrode material for an electrochemical supercapacitor
Based on analysisof karst fracture-vuggy filling mineralogy and geochemical fluorite in hercynian, this paper make further research about formation and significance of fluorite in central uplift of Ta
The removal of the antibiotic compound tetracycline hydrochloride (TC) was investigated by using goethite/H2O2 as a heterogeneous Fenton reagent.Five principle operational parameters, especially solut
Graphene oxide (GO) is a graphene derivatives that has oxygen-containing functional groups on the graphene basal plane, such as hydroxyl, carbonyl, epoxy and carboxyl groups.GO is considered as a prom
Mica glass-ceramics were prepared by pressureless sintering with a phlogopite and various additives as raw materials.The effects of CaF2 content, Li2O content, ZrO2 content, and sintering temperature
The Suizhou meteorite is an L6 chondrite.This meteorite is consisted of olivine, low-Ca pyroxene,plagioclase, FeNi metal, troilite, whitlockite, chlorapatite, chromite and ilmenite.Olivine and pyroxen
Effects of particle size and chain length on flotation of quaternary ammonium salts (QAS) onto kaolinite have been investigated by mico-flotation tests.The two kinds of quaternary ammonium salts [RN(C
By using hydrothermal synthesis method, successively adding tetrabutyl titanate and expandable flake graphite in 40 mL 0.95％ NH4Cl solution prepared the nano TiO2/expandable flake graphite, which was
Located at the boundary of Chongli county, Chicheng county and Xuanhua county of Heibei province, the Dongping gold deposit is genetically affiliated to the late Jurassic-early Cretaceous volcanics an