|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Geobiological approach to evaluating marine carbonate source rocks of hydrocarbon显示文摘Evaluating the pre-Jurassic marine source rocks in China has been difficult because these rocks are generally too highor over-maturated for most traditional methods to work.As to the remaining parameter TOC (%),its lower limit for recognizing the carbonate source rocks in China has been in dispute.Nineteen Phanerozoic sections in the Middle-Upper Yangtze Platform and the Guizhou-Hunan-Guangxi Basin have been studied in search for a different approach to complementing the traditional evaluation method for these source rocks.We have applied a geobiological approach to tracing the organic carbon (OC) output and accumulation from the living stage (primary productivity) to the post-mortem deposited remains,and finally to the preserved burial organics.Four biological and geological parameters are employed to represent the OC of the three stages.A series of proxies of these parameters are discussed and integrated to establish a geobiological evaluation system independent of TOC and other traditional methods.Here we use the Guangyuan section in Sichuan as an example for the geobiological evaluation.Our results indicate that in the argillaceous rocks,the geobiological parameters show the qualified source rocks in accordance with high TOC values;but in the carbonates,the good source rocks delineated by the geobiological parameters have a wide range of TOC,from 0.03% to 1.59%,mostly<0.3%.We suggest that it is still premature to set TOC=0.3% or 0.5% as the lower limit for the pre-Jurassic carbonate source rocks in South China. | YIN HongFu XIE ShuCheng YAN JiaXin HU ChaoYong HUANG JunHua Tenger QIE WenKun QIU Xuan | 2011 | Science China Earth Sciences2011，54，8： | 7 |
| 2 | Integrated Simulation Method for Interaction between Manufacturing Process and Machine Tool显示文摘The interaction between the machining process and the machine tool(IMPMT) plays an important role on high precision components manufacturing. However, most researches are focused on the machining process or the machine tool separately, and the interaction between them has been always overlooked. In this paper, a novel simplified method is proposed to realize the simulation of IMPMT by combining use the finite element method and state space method. In this method, the transfer function of the machine tool is built as a small state space. The small state space is obtained from the complicated finite element model of the whole machine tool.Furthermore, the control system of the machine tool is integrated with the transfer function of the machine tool to generate the cutting trajectory. Then, the tool tip response under the cutting force is used to predict the machined surface. Finally, a case study is carried out for a fly-cutting machining process, the dynamic response analysis of an ultra-precision fly-cutting machine tool and the machined surface verifies the effectiveness of this method. This research proposes a simplified method to study the IMPMT, the relationships between the machining process and the machine tool are established and the surface generation is obtained. | CHEN Wanqun HUO Dehong XIE Wenkun TENG Xiangyu ZHANG Jiayi | 2016 | Chinese Journal of Mechanical Engineering2016，29，6： | 2 |
| 3 | Crystallographic orientation effect on cutting-based single atomic layer removal显示文摘The ever-increasing requirements for the scalable manufacturing of atomic-scale devices emphasize the significance of developing atomic-scale manufacturing technology. The mechanism of a single atomic layer removal in cutting is the key basic theoretical foundation for atomic-scale mechanical cutting. Material anisotropy is among the key decisive factors that could not be neglected in cutting at such a scale. In the present study, the crystallographic orientation effect on the cutting-based single atomic layer removal of monocrystalline copper is investigated by molecular dynamics simulation. When undeformed chip thickness is in the atomic scale, two kinds of single atomic layer removal mechanisms exist in cutting-based single atomic layer removal, namely, dislocation motion and extrusion, due to the differing atomic structures on different crystallographic planes. On close-packed crystallographic plane, the material removal is dominated by the shear stress-driven dislocation motion, whereas on non-close packed crystallographic planes, extrusion-dominated material removal dominates. To obtain an atomic, defect-free processed surface, the cutting needs to be conducted on the close-packed crystallographic planes of monocrystalline copper. | Wenkun XIE Fengzhou FANG | 2020 | Frontiers of Mechanical Engineering2020，15，4： | 1 |
| 4 | Design of a renewable hydroxyapatite-biocarbon composite for the removal of uranium(Ⅵ)with high-efficiency adsorption performance显示文摘The hydroxyapatite-loaded swine manure derived-biocarbon was successfully prepared by pyrolysis method for the adsorption of uranium(Ⅵ).The results of the adsorption experiments displayed that the adsorption behaviors for uranium(Ⅵ)of biocarbon did almost not depend on the interfering ions except Al^(3+),Ca^(2+)and CO_(3)^(2−),showing the high selectivity of the composites for uranium(Ⅵ).The maximum static and dynamic removal capacity of the hydroxyapatite-biocarbon composites to uranium(Ⅵ)were 834.8 and 782.8 mg/g(pH=3,m/V=0.1 g/L and T=298 K),far exceeding other reported biocarbon and hydroxyapatite materials,which indicated that the hydroxyapatite-biocarbon composites possessed an application potential in adsorption.After five cycles of adsorption-desorption processes,the removal efficiency of the hydroxyapatite-biocarbon composite for uranium(Ⅵ)was 93.2%(C_(i)=5 mg/L,pH=3,m/V=0.1 g/L and T=298 K),revealing that the composite had excellent stability and reusability.Moreover,the capture mechanisms of the hydroxyapatite-biocarbon composite for uranium(Ⅵ)included ion exchange and complexation,which was ascribed to the ample active adsorption sites(-OH and PO_(4)^(3−)).Therefore,the hydroxyapatite-loaded swine manure derived-biocarbon would be a potential material to effectually separate uranium(Ⅵ)from solution. | Jun Liao Ting Xiong Ling Ding Ying Xie Yong Zhang Wenkun Zhu | 2022 | Biochar2022，4，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员