This study for the first time demonstrates that some of the so-called clay-sized mudstones observed by the naked eye,such as clay-sized black mudstones and clay-sized oil shales,which are rich in black organic matter(...This study for the first time demonstrates that some of the so-called clay-sized mudstones observed by the naked eye,such as clay-sized black mudstones and clay-sized oil shales,which are rich in black organic matter(including oil and asphaltene),in the Chang 73 Submember of the Upper Triassic Yanchang Formation in the Ordos Basin of China are actually clay-sized tuffaceous rocks(including tuff,sedimentary tuff and tuffaceous sedimentary rock)with high hydrocarbon generation capacities.Thus,these rocks can be defined as clay-sized tuffaceous source rocks.Identification of this lithology has important theoretical and practical significance for the exploration and development of shale oil in the Chang 7 Member.Through the macroscopic observation of drill cores and outcrop profiles,microscopic observation of electron probe thin sections and whole-rock inorganic geochemical analysis(including major,trace and rare earth elements),this work demonstrates that the organic matter-rich clay-sized tuffaceous rocks,especially clay-sized tuffs,have the following characteristics.First,the clay-sized tuffaceous rocks with little black organic matter are mainly greyish white,yellowish brown and purplish grey,and mixed colors occur in areas with strong bentonite lithification.Second,the clay-sized tuffaceous rocks have experienced strong devitrification and recrystallization,forming abundant flaky aluminosilicate minerals with directional arrangement.In thin sections under a polarizing microscope,the interference colors generally show regular alternation between the lowest interference color of first-order yellow and the highest interference color of second-order blue-green.Third,the rock samples plot in the igneous rock field in the TiO2-SiO2 cross-plot and exhibit similar trace element and rare earth element patterns on spider diagrams,indicating that the samples are derived from the same source.The results prove that clay-sized tuffaceous rocks may be widespread in the Chang 73 Submember of the Upper Triassic Yanchang Formation in the Ordos Basin,China.展开更多
This work aims to understand the relationship between the member angle limit and the energy ratio for 24 test samples of composite beams and CFT square steel tube columns. This work also compares the formula applicabi...This work aims to understand the relationship between the member angle limit and the energy ratio for 24 test samples of composite beams and CFT square steel tube columns. This work also compares the formula applicability for member angle limit with the previous test result to provide the basic data for the design of composite beam-CFT column. The evaluation of the member angle limit was performed with concrete compressive strength (fC =22.16 MPa, 30.49 MPa), breadth-to-thickness ratio (B/t=25.0, 33.3, 43.5), and axial capacity ratio (N/N0=0, 0.3, 0.4, 0.5) as the main variables of the test samples. For the relationship between the member angle limit (Ru) and the energy ratio (ES/EC ), the test result shows that the energy ratio becomes lower as the axial capacity ratio and the breadth-to-thickness ratio increase. The energy ratio is lower for the Type B test sample compared with that of Types A and C. For the formula suggested by SATO, the test samples are distributed evenly for comparison between test values and the member angle limit; however, other formulas indicate a deviation. Specifically, for the comparison between R u,cal and R u (Test), Maeda's formula shows severe deviation.展开更多
During the course of knowledge economic, setting up e nterprise dynamic alliances is gradually becoming the most effective way for the enterprises, which seek fast development. There are many researches about enter pr...During the course of knowledge economic, setting up e nterprise dynamic alliances is gradually becoming the most effective way for the enterprises, which seek fast development. There are many researches about enter prise dynamic alliances in other fields, but there is few research about leg al relationship among members of enterprise dynamic alliances and ownership of i ntellectual property achievements which are brought by dynamic alliances. Th is paper discusses legal relationship among members of dynamic alliances and own ership of intellectual property achievements under various legal relationshi ps from the point of view of law.展开更多
It is a great honor to introduce Prof.Dr.Weida Hu and Prof.Dr.Chaohai Du as our new Editorial Board Member of the Journal of Infrared and Millimeter Waves at 60th anniversary of the Shanghai Institute of Technical Phy...It is a great honor to introduce Prof.Dr.Weida Hu and Prof.Dr.Chaohai Du as our new Editorial Board Member of the Journal of Infrared and Millimeter Waves at 60th anniversary of the Shanghai Institute of Technical Physics(SITP)of the Chinese Academy of Sciences.SITP celebrated its 60th year of existence on October 28,2018,with a scientist and engineer academic conference to commemorate the six decades of its history,to honor the six decades that SITP has devoted to developing science and technology in frontier areas of infrared physics.SITP was cofounded by CAS and Fudan University on October 28,1958.展开更多
The hollow flange beam(HFB) is a unique cold-formed steel section developed in Australia for use as a flexural member.It′s a particular cross section with two torsion rigid closed triangular flanges and a comparative...The hollow flange beam(HFB) is a unique cold-formed steel section developed in Australia for use as a flexural member.It′s a particular cross section with two torsion rigid closed triangular flanges and a comparatively flexible web,and it is a type of high efficient cross section.This paper presents two kinds of new cold-formed flange-closed welding sections named HF1 and HF2 according to different section component and parameters of HFB.Nonlinear finite element method has been adopted to investigate the mechanical properties such as buckling mode,deformation process,rigidity,ductility and correlation curve of two kinds of new section members which being subjected to axial compression,flexure,combined compression and bending.Systematical comparisons of the consumed steel quantities of per unit load carrying capacity between new section members and the same section dimensions of cold-formed C-section members have been carried out.Some conclusions can be drawn from above work that the new sections have some superior properties including higher load carrying capacity and section modulus,sufficient section stiffness,and difficult occurrence for the sub element local buckling.The new sections are suitable for bearing flexure,compression,combined compression and bending.The new sections′ consumed steel quantities of per unit load carrying capacity are almost half as those of the same dimension C-section members′.The experimental investigation is carried out further on the new cold-formed flange-closed welding section members and can be used in the practical engineering.展开更多
The glutenite in the fourth member of Shahejie Formation(Es^4)in northern Dongying depression straightforwardly penetrated into the muddy bathyal-abyss facies.The conditions of reservoir is very superior:(1)the high q...The glutenite in the fourth member of Shahejie Formation(Es^4)in northern Dongying depression straightforwardly penetrated into the muddy bathyal-abyss facies.The conditions of reservoir is very superior:(1)the high quality thick bedded oil source rock is developed very well in the Lijin sag and Minfeng sag of the study area,and it has the higher capability of generating hydrocarbon.展开更多
(1)Dr. El-Sayed Mohamed Abdelrahman Professor of Geophysics, Cairo University, Egypt. His primary research interests are potential field methods. His research has focused on gravity, magnetic, self-potential method...(1)Dr. El-Sayed Mohamed Abdelrahman Professor of Geophysics, Cairo University, Egypt. His primary research interests are potential field methods. His research has focused on gravity, magnetic, self-potential methods including depth and shape determination. He has been awarded 5 prizes between 1992 and 2003, including the state prize in Earth sciences, the state prize in advanced technological sciences and the others. (2)Dr. Norman Bleistein Emeritus Professor of Geophysics, Colorado School of Mines, USA. His primary research interests: asymptotic methods for forward modeling and inversion in seismic exploration.He is a Fellow of the Institute of Physics, UK, and Guest Professor, China University of Geosciences, Wuhan, China.展开更多
(1)Dr. El-Sayed Mohamed Abdelrahman Professor of Geophysics, Cairo University, Egypt. His primary research interests are potential field methods. His research has focused on gravity, magnetic, self-potential methods i...(1)Dr. El-Sayed Mohamed Abdelrahman Professor of Geophysics, Cairo University, Egypt. His primary research interests are potential field methods. His research has focused on gravity, magnetic, self-potential methods including depth and shape determination. He has been awarded 5 prizes between 1992 and 2003, including the state prize in Earth sciences, the state prize in advanced technological sciences and the others.展开更多
基金Project(18GK28)supported by the Doctoral Scientific Research Staring Foundation for Yulin University,ChinaProject(20106101110020)supported by the University Research Fund of Science and Technology Development Center of Ministry of Education,ChinaProject(BJ08133-3)supported by the Key Fund Project of Continental Dynamics National Key Laboratory of Northwest University,China。
文摘This study for the first time demonstrates that some of the so-called clay-sized mudstones observed by the naked eye,such as clay-sized black mudstones and clay-sized oil shales,which are rich in black organic matter(including oil and asphaltene),in the Chang 73 Submember of the Upper Triassic Yanchang Formation in the Ordos Basin of China are actually clay-sized tuffaceous rocks(including tuff,sedimentary tuff and tuffaceous sedimentary rock)with high hydrocarbon generation capacities.Thus,these rocks can be defined as clay-sized tuffaceous source rocks.Identification of this lithology has important theoretical and practical significance for the exploration and development of shale oil in the Chang 7 Member.Through the macroscopic observation of drill cores and outcrop profiles,microscopic observation of electron probe thin sections and whole-rock inorganic geochemical analysis(including major,trace and rare earth elements),this work demonstrates that the organic matter-rich clay-sized tuffaceous rocks,especially clay-sized tuffs,have the following characteristics.First,the clay-sized tuffaceous rocks with little black organic matter are mainly greyish white,yellowish brown and purplish grey,and mixed colors occur in areas with strong bentonite lithification.Second,the clay-sized tuffaceous rocks have experienced strong devitrification and recrystallization,forming abundant flaky aluminosilicate minerals with directional arrangement.In thin sections under a polarizing microscope,the interference colors generally show regular alternation between the lowest interference color of first-order yellow and the highest interference color of second-order blue-green.Third,the rock samples plot in the igneous rock field in the TiO2-SiO2 cross-plot and exhibit similar trace element and rare earth element patterns on spider diagrams,indicating that the samples are derived from the same source.The results prove that clay-sized tuffaceous rocks may be widespread in the Chang 73 Submember of the Upper Triassic Yanchang Formation in the Ordos Basin,China.
基金supported by the Basic Science Research Program of the National Research Foundation of Korea (NRF) and funded by the Ministry of Education,Science and Technology (2011-0009227)
文摘This work aims to understand the relationship between the member angle limit and the energy ratio for 24 test samples of composite beams and CFT square steel tube columns. This work also compares the formula applicability for member angle limit with the previous test result to provide the basic data for the design of composite beam-CFT column. The evaluation of the member angle limit was performed with concrete compressive strength (fC =22.16 MPa, 30.49 MPa), breadth-to-thickness ratio (B/t=25.0, 33.3, 43.5), and axial capacity ratio (N/N0=0, 0.3, 0.4, 0.5) as the main variables of the test samples. For the relationship between the member angle limit (Ru) and the energy ratio (ES/EC ), the test result shows that the energy ratio becomes lower as the axial capacity ratio and the breadth-to-thickness ratio increase. The energy ratio is lower for the Type B test sample compared with that of Types A and C. For the formula suggested by SATO, the test samples are distributed evenly for comparison between test values and the member angle limit; however, other formulas indicate a deviation. Specifically, for the comparison between R u,cal and R u (Test), Maeda's formula shows severe deviation.
基金Project (No .70 1 71 0 0 7)supportedbyNationalScienceFoundationofChina
文摘During the course of knowledge economic, setting up e nterprise dynamic alliances is gradually becoming the most effective way for the enterprises, which seek fast development. There are many researches about enter prise dynamic alliances in other fields, but there is few research about leg al relationship among members of enterprise dynamic alliances and ownership of i ntellectual property achievements which are brought by dynamic alliances. Th is paper discusses legal relationship among members of dynamic alliances and own ership of intellectual property achievements under various legal relationshi ps from the point of view of law.
文摘It is a great honor to introduce Prof.Dr.Weida Hu and Prof.Dr.Chaohai Du as our new Editorial Board Member of the Journal of Infrared and Millimeter Waves at 60th anniversary of the Shanghai Institute of Technical Physics(SITP)of the Chinese Academy of Sciences.SITP celebrated its 60th year of existence on October 28,2018,with a scientist and engineer academic conference to commemorate the six decades of its history,to honor the six decades that SITP has devoted to developing science and technology in frontier areas of infrared physics.SITP was cofounded by CAS and Fudan University on October 28,1958.
文摘The hollow flange beam(HFB) is a unique cold-formed steel section developed in Australia for use as a flexural member.It′s a particular cross section with two torsion rigid closed triangular flanges and a comparatively flexible web,and it is a type of high efficient cross section.This paper presents two kinds of new cold-formed flange-closed welding sections named HF1 and HF2 according to different section component and parameters of HFB.Nonlinear finite element method has been adopted to investigate the mechanical properties such as buckling mode,deformation process,rigidity,ductility and correlation curve of two kinds of new section members which being subjected to axial compression,flexure,combined compression and bending.Systematical comparisons of the consumed steel quantities of per unit load carrying capacity between new section members and the same section dimensions of cold-formed C-section members have been carried out.Some conclusions can be drawn from above work that the new sections have some superior properties including higher load carrying capacity and section modulus,sufficient section stiffness,and difficult occurrence for the sub element local buckling.The new sections are suitable for bearing flexure,compression,combined compression and bending.The new sections′ consumed steel quantities of per unit load carrying capacity are almost half as those of the same dimension C-section members′.The experimental investigation is carried out further on the new cold-formed flange-closed welding section members and can be used in the practical engineering.
文摘The glutenite in the fourth member of Shahejie Formation(Es^4)in northern Dongying depression straightforwardly penetrated into the muddy bathyal-abyss facies.The conditions of reservoir is very superior:(1)the high quality thick bedded oil source rock is developed very well in the Lijin sag and Minfeng sag of the study area,and it has the higher capability of generating hydrocarbon.
文摘(1)Dr. El-Sayed Mohamed Abdelrahman Professor of Geophysics, Cairo University, Egypt. His primary research interests are potential field methods. His research has focused on gravity, magnetic, self-potential methods including depth and shape determination. He has been awarded 5 prizes between 1992 and 2003, including the state prize in Earth sciences, the state prize in advanced technological sciences and the others. (2)Dr. Norman Bleistein Emeritus Professor of Geophysics, Colorado School of Mines, USA. His primary research interests: asymptotic methods for forward modeling and inversion in seismic exploration.He is a Fellow of the Institute of Physics, UK, and Guest Professor, China University of Geosciences, Wuhan, China.
文摘(1)Dr. El-Sayed Mohamed Abdelrahman Professor of Geophysics, Cairo University, Egypt. His primary research interests are potential field methods. His research has focused on gravity, magnetic, self-potential methods including depth and shape determination. He has been awarded 5 prizes between 1992 and 2003, including the state prize in Earth sciences, the state prize in advanced technological sciences and the others.
