Using high-precision zircon U-Pb ID-TIMS geochronology,tuffs from the Chang 9 shale and the Chang 7 shale were dated.The tuff in the Chang 9 shale is 241.47±0.17 Ma,which falls between the top tuff age of 241.06&...Using high-precision zircon U-Pb ID-TIMS geochronology,tuffs from the Chang 9 shale and the Chang 7 shale were dated.The tuff in the Chang 9 shale is 241.47±0.17 Ma,which falls between the top tuff age of 241.06±0.12 Ma and the bottom tuff age of 241.558±0.093 Ma in the Chang 7 shale.These reveal that the Chang 9 and Chang 7 shales are contemporaneous,belonging to the Ladinian stage of the Middle Triassic.This insight expands the region of the main source rock of Chang 7 to the northeast and will inform the search for the deep Chang 9 shale petroleum system,increasing the scope for exploring the Chang 7 shale system in northern Shaanxi.The research results clarify the relationship between the two sets of shale in the Yanchang Formation and redefine the distribution range of the Chang 7 shale in the Ordos Basin.At the same time,it shows that there is a cross-layer problem in the stratigraphic division of the Yanchang Formation in different regions,the high-precision U-Pb dating technology providing a reference for the fine stratigraphic correlation of other continental basins in the world.展开更多
This work is concerned with the application of a redefined set of extended uniform cubic B-spline(RECBS)functions for the numerical treatment of time-fractional Telegraph equation.The presented technique engages finit...This work is concerned with the application of a redefined set of extended uniform cubic B-spline(RECBS)functions for the numerical treatment of time-fractional Telegraph equation.The presented technique engages finite difference formulation for discretizing the Caputo time-fractional derivatives and RECBS functions to interpolate the solution curve along the spatial grid.Stability analysis of the scheme is provided to ensure that the errors do not amplify during the execution of the numerical procedure.The derivation of uniform convergence has also been presented.Some computational experiments are executed to verify the theoretical considerations.Numerical results are compared with the existing schemes and it is concluded that the present scheme returns superior outcomes on the topic.展开更多
The Shanwang Basin is a small Cenozoic sedimentary basin located in Linqu county, Shandong province.The Shanwang Formation, especially the diatomaceous shale member, contains diverse and finely preserved flora and fau...The Shanwang Basin is a small Cenozoic sedimentary basin located in Linqu county, Shandong province.The Shanwang Formation, especially the diatomaceous shale member, contains diverse and finely preserved flora and fauna fossils （Fig. 1）. Previous paleontological study and radiometric dating show that it was formed in the Miocene. However, on the precise age of the formation, there are such different opinions as Late Miocene, Middle Miocene, Early stage of Middle Miocene, etc.展开更多
Nonalcoholic fatty liver disease(NAFLD)is a global public health concern owing to its substantial contribution to chronic liver diseases.The disease is closely linked to metabolic syndrome(MS),suggesting a common biol...Nonalcoholic fatty liver disease(NAFLD)is a global public health concern owing to its substantial contribution to chronic liver diseases.The disease is closely linked to metabolic syndrome(MS),suggesting a common biological pathway and shared disease mechanism for both ailments.Previous studies revealed a close relationship of NAFLD with the components of MS including abdominal obesity,dyslipidemia,hypertension,and hyperglycemia.Hence,a group of experts recently renamed NAFLD as metabolic dysfunction-associated fatty liver disease(MAFLD)in order to encompass a more appropriate pathogenesis of the disease.NAFLD was first named to describe a condition similar to alcoholic hepatitis in absence of significant alcohol consumption.However,knowledge pertaining to the etiopathogenesis of the disease has evolved over the past four decades.Recent evidence endorses NAFLD as a terminology of exclusion and suggests that it may often leads to misdiagnosis or inappropriate management of patients,particularly in clinical practice.On the other hand,the new definition is useful in addressing hepatic steatosis with metabolic dysfunction,which ultimately covers most of the patients with such illness.Therefore,it seems to be helpful in improving clinical diagnosis and managing high-risk patients with fatty liver disease.However,it is imperative to validate the new terminology at the population level to ensure a holistic approach to reduce the global burden of this heterogeneous disease condition.展开更多
Alzheimer＇s disease（AD）redefined：For the past century,AD has been defined as a disease of progressive cognitive decline paired with a burden of amyloid-β（Aβ）plaques and pathologic tau tangles in the hippocampu...Alzheimer＇s disease（AD）redefined：For the past century,AD has been defined as a disease of progressive cognitive decline paired with a burden of amyloid-β（Aβ）plaques and pathologic tau tangles in the hippocampus and forebrain.However,a recent Framework paper jointly sponsored by the National Institute on Aging and the Alzheimer＇s Association（Jack et al.,2018）proposes new classification guidelines for AD,which,if adopted,will have profoundconsequences for the future management of AD.展开更多
In this article,we calculate various topological invariants such as symmetric division degree index,redefined Zagreb index,VL index,first and second exponential Zagreb index,first and second multiplicative exponential...In this article,we calculate various topological invariants such as symmetric division degree index,redefined Zagreb index,VL index,first and second exponential Zagreb index,first and second multiplicative exponential Zagreb indices,symmetric division degree entropy,redefined Zagreb entropy,VL entropy,first and second exponential Zagreb entropies,multiplicative exponential Zagreb entropy.We take the chemical compound named Proanthocyanidins,which is a very useful polyphenol in human’s diet.They are very beneficial for one’s health.These chemical compounds are extracted from grape seeds.They are tremendously anti-inflammatory.A subdivision formof this compound is presented in this article.The compound named subdivided grape seed Proanthocyanidins is abbreviated as SGSP_(3).This network SGSP_(3),is converted and modeled into its mathematical graphical formation with the support of the latest mathematical tools.We have also developed many closed formulas for the measurement of entropy for the general chemical structure of the subdivided grape seed Proanthocyanidins network.The achieved outcomes can be correlated with the chemical version of SGSP_(3) to get a better understanding of its biological as well as physical features.展开更多
The redefinition of the U.S.policy toward China since Barack Obama’s election has been based on a compromise between elements of hard power(military,economy) and soft power(influence,dialogue,persuasion).This new pos...The redefinition of the U.S.policy toward China since Barack Obama’s election has been based on a compromise between elements of hard power(military,economy) and soft power(influence,dialogue,persuasion).This new posture has been defined by several experts and policymakers as a"smart policy".However,considering the rise of China and its implications both at economic and political levels,what is the real margin of Washington in its relation with Beijing,and what are the long term implications of the smart policy? If the China policy is a priority for the Obama administration,the challenges for Washington are particularly sensitive, considering the consequences of a failure in implementing comprehensive China-U.S.relations.展开更多
IF you could wind back the clock and revisit your past, would you want to be 18 again？ It is a tempting thought on many levels, but for Gao Jing the answer is an emphatic NO. The reason is simple： this was the age w...IF you could wind back the clock and revisit your past, would you want to be 18 again？ It is a tempting thought on many levels, but for Gao Jing the answer is an emphatic NO. The reason is simple： this was the age when she had to take hergaokao - China＇s national college entrance exam.展开更多
China’s traditional top four inventions have taken on a new look. An exhibition recently held at the China Science and Technology Museum in Beijing showed that the old stalwarts of compass, papermak-
The central business district (CBD), usually the epicenter of any city, is also a place where crowds, goods, capital, information and cultures join together. Among all these glistening elements, the people
The CBD, often the epicenter of any city, is a place where people,goods, funds, information and cultures come together. Among all these glistening elements, the most important— living and working—are often glossed o...The CBD, often the epicenter of any city, is a place where people,goods, funds, information and cultures come together. Among all these glistening elements, the most important— living and working—are often glossed over. Creating the CBD "comfort zone"展开更多
Organized by China Home Textile Association, The Sub-Council of Textile Industry, CCPIT and Messe Frankfurt (HK) Ltd., Intertextile Shanghai Home Textiles, one of Asia’s most popular home textiles trade shows, return...Organized by China Home Textile Association, The Sub-Council of Textile Industry, CCPIT and Messe Frankfurt (HK) Ltd., Intertextile Shanghai Home Textiles, one of Asia’s most popular home textiles trade shows, returns for its 14th year, 26 – 28 August 2008, at the Shanghai New International Expo Centre, with 100,000 sqm of exhibition space.展开更多
The results of 20 years of research on brain death will be released to the public, the Chinese Ministry of Health reported in early April. A special ministry team has drafted the criteria for brain death in Criteria f...The results of 20 years of research on brain death will be released to the public, the Chinese Ministry of Health reported in early April. A special ministry team has drafted the criteria for brain death in Criteria for the Diagnosis of Brain Death in Adults (Revised Edition) and Technical Specifications for the展开更多
Rural migrant workers are counted in China’s official urban unemployment rate Rural migrant workers are a major work force in Chinese cities. Their employment is usually temporary and sensitive to economic fluctuations.
基金supported by the Research Program of the Research Institute of Petroleum Exploration and Development of the Changqing Oilfield(Grant No.J2019168)。
文摘Using high-precision zircon U-Pb ID-TIMS geochronology,tuffs from the Chang 9 shale and the Chang 7 shale were dated.The tuff in the Chang 9 shale is 241.47±0.17 Ma,which falls between the top tuff age of 241.06±0.12 Ma and the bottom tuff age of 241.558±0.093 Ma in the Chang 7 shale.These reveal that the Chang 9 and Chang 7 shales are contemporaneous,belonging to the Ladinian stage of the Middle Triassic.This insight expands the region of the main source rock of Chang 7 to the northeast and will inform the search for the deep Chang 9 shale petroleum system,increasing the scope for exploring the Chang 7 shale system in northern Shaanxi.The research results clarify the relationship between the two sets of shale in the Yanchang Formation and redefine the distribution range of the Chang 7 shale in the Ordos Basin.At the same time,it shows that there is a cross-layer problem in the stratigraphic division of the Yanchang Formation in different regions,the high-precision U-Pb dating technology providing a reference for the fine stratigraphic correlation of other continental basins in the world.
文摘This work is concerned with the application of a redefined set of extended uniform cubic B-spline(RECBS)functions for the numerical treatment of time-fractional Telegraph equation.The presented technique engages finite difference formulation for discretizing the Caputo time-fractional derivatives and RECBS functions to interpolate the solution curve along the spatial grid.Stability analysis of the scheme is provided to ensure that the errors do not amplify during the execution of the numerical procedure.The derivation of uniform convergence has also been presented.Some computational experiments are executed to verify the theoretical considerations.Numerical results are compared with the existing schemes and it is concluded that the present scheme returns superior outcomes on the topic.
基金supported by the National Natural Science Foundation of China(grant 41472092)the Scientific and Technological Innovation Project financially supported by the Qingdao National Laboratory for Marine Science and Technology(No.2016ASKJ13)
文摘The Shanwang Basin is a small Cenozoic sedimentary basin located in Linqu county, Shandong province.The Shanwang Formation, especially the diatomaceous shale member, contains diverse and finely preserved flora and fauna fossils （Fig. 1）. Previous paleontological study and radiometric dating show that it was formed in the Miocene. However, on the precise age of the formation, there are such different opinions as Late Miocene, Middle Miocene, Early stage of Middle Miocene, etc.
文摘Nonalcoholic fatty liver disease(NAFLD)is a global public health concern owing to its substantial contribution to chronic liver diseases.The disease is closely linked to metabolic syndrome(MS),suggesting a common biological pathway and shared disease mechanism for both ailments.Previous studies revealed a close relationship of NAFLD with the components of MS including abdominal obesity,dyslipidemia,hypertension,and hyperglycemia.Hence,a group of experts recently renamed NAFLD as metabolic dysfunction-associated fatty liver disease(MAFLD)in order to encompass a more appropriate pathogenesis of the disease.NAFLD was first named to describe a condition similar to alcoholic hepatitis in absence of significant alcohol consumption.However,knowledge pertaining to the etiopathogenesis of the disease has evolved over the past four decades.Recent evidence endorses NAFLD as a terminology of exclusion and suggests that it may often leads to misdiagnosis or inappropriate management of patients,particularly in clinical practice.On the other hand,the new definition is useful in addressing hepatic steatosis with metabolic dysfunction,which ultimately covers most of the patients with such illness.Therefore,it seems to be helpful in improving clinical diagnosis and managing high-risk patients with fatty liver disease.However,it is imperative to validate the new terminology at the population level to ensure a holistic approach to reduce the global burden of this heterogeneous disease condition.
文摘Alzheimer＇s disease（AD）redefined：For the past century,AD has been defined as a disease of progressive cognitive decline paired with a burden of amyloid-β（Aβ）plaques and pathologic tau tangles in the hippocampus and forebrain.However,a recent Framework paper jointly sponsored by the National Institute on Aging and the Alzheimer＇s Association（Jack et al.,2018）proposes new classification guidelines for AD,which,if adopted,will have profoundconsequences for the future management of AD.
基金Under the sponsor of Unitéde Recherche Clinique Lariboisière St-Louis(URC)Assistance Publique-Hoitaux de Paris 200,rue du Fbg Saint-Denis 75010 Paris.
文摘In this article,we calculate various topological invariants such as symmetric division degree index,redefined Zagreb index,VL index,first and second exponential Zagreb index,first and second multiplicative exponential Zagreb indices,symmetric division degree entropy,redefined Zagreb entropy,VL entropy,first and second exponential Zagreb entropies,multiplicative exponential Zagreb entropy.We take the chemical compound named Proanthocyanidins,which is a very useful polyphenol in human’s diet.They are very beneficial for one’s health.These chemical compounds are extracted from grape seeds.They are tremendously anti-inflammatory.A subdivision formof this compound is presented in this article.The compound named subdivided grape seed Proanthocyanidins is abbreviated as SGSP_(3).This network SGSP_(3),is converted and modeled into its mathematical graphical formation with the support of the latest mathematical tools.We have also developed many closed formulas for the measurement of entropy for the general chemical structure of the subdivided grape seed Proanthocyanidins network.The achieved outcomes can be correlated with the chemical version of SGSP_(3) to get a better understanding of its biological as well as physical features.
文摘The redefinition of the U.S.policy toward China since Barack Obama’s election has been based on a compromise between elements of hard power(military,economy) and soft power(influence,dialogue,persuasion).This new posture has been defined by several experts and policymakers as a"smart policy".However,considering the rise of China and its implications both at economic and political levels,what is the real margin of Washington in its relation with Beijing,and what are the long term implications of the smart policy? If the China policy is a priority for the Obama administration,the challenges for Washington are particularly sensitive, considering the consequences of a failure in implementing comprehensive China-U.S.relations.
文摘IF you could wind back the clock and revisit your past, would you want to be 18 again？ It is a tempting thought on many levels, but for Gao Jing the answer is an emphatic NO. The reason is simple： this was the age when she had to take hergaokao - China＇s national college entrance exam.
文摘China’s traditional top four inventions have taken on a new look. An exhibition recently held at the China Science and Technology Museum in Beijing showed that the old stalwarts of compass, papermak-
文摘The central business district (CBD), usually the epicenter of any city, is also a place where crowds, goods, capital, information and cultures join together. Among all these glistening elements, the people
文摘The CBD, often the epicenter of any city, is a place where people,goods, funds, information and cultures come together. Among all these glistening elements, the most important— living and working—are often glossed over. Creating the CBD "comfort zone"
文摘Organized by China Home Textile Association, The Sub-Council of Textile Industry, CCPIT and Messe Frankfurt (HK) Ltd., Intertextile Shanghai Home Textiles, one of Asia’s most popular home textiles trade shows, returns for its 14th year, 26 – 28 August 2008, at the Shanghai New International Expo Centre, with 100,000 sqm of exhibition space.
文摘The results of 20 years of research on brain death will be released to the public, the Chinese Ministry of Health reported in early April. A special ministry team has drafted the criteria for brain death in Criteria for the Diagnosis of Brain Death in Adults (Revised Edition) and Technical Specifications for the
文摘Rural migrant workers are counted in China’s official urban unemployment rate Rural migrant workers are a major work force in Chinese cities. Their employment is usually temporary and sensitive to economic fluctuations.
