Non-traditional security issues have arisen since the 1960s,especially after the end of the Cold War,and are becoming a major issue in world security and politics.This reflects tremendous changes in the world situatio...Non-traditional security issues have arisen since the 1960s,especially after the end of the Cold War,and are becoming a major issue in world security and politics.This reflects tremendous changes in the world situation.With diverse causes and plural referent objects,non-traditional security issues cover nearly all the problems in the world today and make development difficult to sustain.This raises the question of whether human society and the earth can survive.Power politics one-sidedly stresses the role of power,endangering the harmonious development of nations and the whole of human society.It is not at all conducive to the solution of non-traditional security issues.The solution of non-traditional security issues demands cooperation from all actors in the international community.Multiple means are needed to solve these issues.Equal dialogue between all the actors,which can easily be attained,will play an effective role,as long as all actors respect each other's differences.展开更多
This paper reports results of investigations of some surface characteristics, and resulting performance of parts proc-essed using non-traditional finishing methods. The friction factor, precision keeping and anti-cong...This paper reports results of investigations of some surface characteristics, and resulting performance of parts proc-essed using non-traditional finishing methods. The friction factor, precision keeping and anti-conglutination performance of the finished surfaces are considered, and surface characteristics such as microtopography and machining texture were investigated. The overall performance of surfaces finished using non-traditional finishing methods was found to be significantly better than that of traditional finishing methods.展开更多
The article considers a new and non-traditional form of dialogue. Calling it a "spiritual dialogue" or the intersection of thoughts, the author comments on this type of dialogue as a basis for interreligious, interc...The article considers a new and non-traditional form of dialogue. Calling it a "spiritual dialogue" or the intersection of thoughts, the author comments on this type of dialogue as a basis for interreligious, intercultural and intercivilizational dialogues, seeing it as their main motive force. In this study, firstly, traditional and non-traditional dialogues are compared and indicate their specific features on the basis of the work of the Eastern and the West thinkers. Then, the nontraditional dialogue has been considered in the context of modern information chaos. The last section of the article is devoted to the analysis of the basic principles of non-traditional dialogue, emphasizing the role of language. The conclusion of the article once again highlights the importance of non-traditional dialogue that starts in the inner world of the human being, which gives him a possibility to observe an object from two viewpoints and merge and these different views in the mind.展开更多
We are publishing two stories about how in Sichuan Province, southwest China, farmers are getting rich with help from local governments by developing "non-traditional undertakings." In China's current official term...We are publishing two stories about how in Sichuan Province, southwest China, farmers are getting rich with help from local governments by developing "non-traditional undertakings." In China's current official terminology, a "non-traditional undertaking" can be anything other than the undertaking on which farmers, by tradition, depend for the bulk of their incomes-for example, crop and animal farming in most of China's farming areas. "Non-traditional" undertakings are more profitable than "traditional" ones.展开更多
The Earth has grown from chaotically mixed small dusts and gases to its present highly differentiated layered structure over the past 4.567 billion years. This differentiation has led to the formation of the atmospher...The Earth has grown from chaotically mixed small dusts and gases to its present highly differentiated layered structure over the past 4.567 billion years. This differentiation has led to the formation of the atmosphere, hydrosphere,biosphere, crust, mantle, and core. The timing and mechanism for the formation and evolution of these different layers are still subjects of intense debate. This review brings together recent advances in using non-traditional stable isotopes to constrain major events and processes leading to the formation and differentiation of the Earth, including the Moon-forming giant impact, crustmantle interactions, evolution of life, the rise of atmospheric oxygen, extreme paleoclimate changes, and cooling rate of magmas.展开更多
Non-traditional security, often abbreviated to NTS, is a popular but rather ambiguousconcept within and outside academic circles. How to accurately define this term? Whatshould be considered in prioritising the needs ...Non-traditional security, often abbreviated to NTS, is a popular but rather ambiguousconcept within and outside academic circles. How to accurately define this term? Whatshould be considered in prioritising the needs to curb various NTS threats, given a countryslimited resources and capacities? By raising thought-provoking questions, the author triesto explain the perplexity concerning NTS issues, arguing that NTS is important in economic,political and security sense, but that more efforts are needed from the academics in order toreach a consensus in understanding and dealing with NTS issues.展开更多
With the development of AI,a large amount of cyberbullying language flooded into the Internet.Cyberbullying language damages the online environment and causes mental harm to the victims of online bullying.Many researc...With the development of AI,a large amount of cyberbullying language flooded into the Internet.Cyberbullying language damages the online environment and causes mental harm to the victims of online bullying.Many researchers,therefore,have paid much attention to the problem.This study collected online comments targeted at Prince Harry and Meghan Markle as a corpus and then analyzed text data based on Critical Discourse Analysis by using text-mining tools to explore the factors that contribute to the social ideological effects of the cyberbullying language.The research results show that cultural differences,prejudice,or social exclusion due to race or gender form cyberbullying on social media.展开更多
Cadmium(Cd) is a scarce, but not an extremely rare element in the Earth's crust(crustal average: 0.2 ppm Cd). Geochemically, Cd exhibits thiophile, lithophile, and volatile behavior in different geologic process...Cadmium(Cd) is a scarce, but not an extremely rare element in the Earth's crust(crustal average: 0.2 ppm Cd). Geochemically, Cd exhibits thiophile, lithophile, and volatile behavior in different geologic processes. Biologically, it is a nutrient-like element that is closely related to P and Zn and is toxic element to organisms. Presently, Cd isotopes have been successfully utilized to trace Cd sources and nutrient cycling in marine systems in addition to unearthing other geochemical processes. Using published studies and our recent work, this survey summarizes the chemical preparation and mass spectrometry of Cd isotopes. It also reviews Cd isotopic compositions and fractionation mechanisms in nature as well as experiments.展开更多
Pre-diabetes, which is typically defined as blood glucose concentrations higher than normal but lower than thediabetes threshold, is a high-risk state for diabetes and cardiovascular disease development. As such, it r...Pre-diabetes, which is typically defined as blood glucose concentrations higher than normal but lower than thediabetes threshold, is a high-risk state for diabetes and cardiovascular disease development. As such, it represents three groups of individuals: Those with impaired fasting glucose(IFG), those with impaired glucose tolerance(IGT) and those with a glycated haemoglobin(HbA1c) between 39-46 mmol/mol. Several clinical trials have shown the important role of IFG, IGT and HbA1c -pre-diabetes as predictive tools for the risk of developing type 2 diabetes. Moreover, with regard to cardiovascular disease, pre-diabetes is associated with more advanced vascular damage compared with normoglycaemia, independently of confounding factors. In view of these observations, diagnosis of pre-diabetes is mandatory to prevent or delay the development of the disease and its complications; however, a number of previous studies reported that the concordance between pre-diabetes diagnoses made by IFG, IGT or HbA1c is scarce and there are conflicting data as to which of these methods best predicts cardiovascular disease. This review highlights recent studies and cur-rent controversies in the field. In consideration of the expected increased use of HbA1c as a screening tool to identify individuals with alteration of glycaemic homeo-stasis, we focused on the evidence regarding the ability of HbA1c as a diagnostic tool for pre-diabetes and as a useful marker in identifying patients who have an increased risk for cardiovascular disease. Finally, we reviewed the current evidence regarding non-traditional glycaemic biomarkers and their use as alternatives to or additions to traditional ones.展开更多
This work presents isotopic data for the non-traditional isotope systems Fe,Cu,and Zn on a set of Chicxulub impactites and target lithologies with the aim of better documenting the dynamic processes taking place durin...This work presents isotopic data for the non-traditional isotope systems Fe,Cu,and Zn on a set of Chicxulub impactites and target lithologies with the aim of better documenting the dynamic processes taking place during hypervelocity impact events,as well as those affecting impact structures during the post-impact phase.The focus lies on material from the recent IODP-ICDP Expedition 364 Hole M0077A drill core obtained from the offshore Chicxulub peak ring.Two ejecta blanket samples from the UNAM 5 and 7 cores were used to compare the crater lithologies with those outside of the impact structure.The datasets of bulk Fe,Cu,and Zn isotope ratios are coupled with petrographic observations and bulk major and trace element compositions to disentangle equilibrium isotope fractionation effects from kinetic processes.The observed Fe and Cu isotopic signatures,with δ^(56/54)Fe ranging from0.95‰to 0.58‰and δ^(65/63)Cu from0.73‰to 0.14‰,mostly reflect felsic,mafic,and carbonate target lithology mixing and secondary sulfide mineral formation,the latter associated to the extensive and long-lived(>105 years)hydrothermal system within Chicxulub structure.On the other hand,the stable Zn isotope ratios provide evidence for volatility-governed isotopic fractionation.The heavier Zn isotopic compositions observed for the uppermost part of the impactite sequence and a metamorphic clast(δ^(66/64)Zn of up to 0.80‰and 0.87‰,respectively)relative to most basement lithologies and impact melt rock units indicate partial vaporization of Zn,comparable to what has been observed for Cretaceous-Paleogene boundary layer sediments around the world,as well as for tektites from various strewn fields.In contrast to previous work,our data indicate that an isotopically light Zn reservoir(δ^(66/64)Zn down to0.49‰),of which the existence has previously been suggested based on mass balance considerations,may reside within the upper impact melt rock(UIM)unit.This observation is restricted to a few UIM samples only and cannot be extended to other target or impact melt rock units.Light isotopic signatures of moderately volatile elements in tektites and microtektites have previously been linked to(back-)condensation under distinct kinetic regimes.Although some of the signatures observed may have been partially overprinted during post-impact processes,our bulk data confirm impact volatilization and condensation of Zn,which may be even more pronounced at the microscale,with variable degrees of mixing between isotopically distinct reservoirs,not only at proximal to distal ejecta sites,but also within the lithologies associated with the Chicxulub impact crater.展开更多
The authors investigated plant species selected for charcoal production. Then, they compared these species with those exploited for charcoal production in Togo, another West African country. The study in Ghana took pl...The authors investigated plant species selected for charcoal production. Then, they compared these species with those exploited for charcoal production in Togo, another West African country. The study in Ghana took place in six localities in the Volta Region. Simple ranking was used in the analysis of the species. A total of 35 species belonging to 31 genera were used. Five of these are non-traditional charcoal-making species, implying the increasing diversity of the plants used. Anogeissus leiocarpus ranked first with over 79% of the producers exploiting it and was reported as a preferred or a category 1 species for charcoal production in Togo. Out of the 34 woody species exploited in Togo, 10 are similar to those used in the study area. The ranking used are compared favourably with the categorization used in the Togolese studies.展开更多
The security threats to Shanghai World Expo were multi-faceted, ranging from terrorist threat to ethnic separatist threat, from foreign diplomatic and political disputes to domestic mass disturbances as well as seriou...The security threats to Shanghai World Expo were multi-faceted, ranging from terrorist threat to ethnic separatist threat, from foreign diplomatic and political disputes to domestic mass disturbances as well as serious social crimes The first was from terrorist threat, and the global Jihad network in Eurasia was looming in the early 21st century, which was guided by radical ideologies; the second threat was from ethnic separatist groups; the third threat was related with foreign personnel and diplomats' security; the fourth threat was from mass disturbances, and the fifth was from serious social crimes. China's measures to these potential multi-faceted challenges were serious and various, including preventing terrorist attacks through international cooperation, lessening ethnic separatists' dissatisfaction and avoiding possible mass demonstration, reducing the chance of domestic mass disturbances, guaranteeing public transportation and aerospace security, making extensive use of advanced technologies and referring to other countries' expertise in security check, seeking help from other provinces bordering Shanghai, and strengthening control over explosive materials, etc.. Nevertheless, the efficacy of the above-mentioned countermeasures was problematic, for they were more defensive than offensive, more passive than proactive, and more tactical than strategic.展开更多
There are several indexing techniques that can optimize system performances. The choice of the right index type in a schema can improve the DB performances by up to 80%. Unfortunately the illustrations of the various ...There are several indexing techniques that can optimize system performances. The choice of the right index type in a schema can improve the DB performances by up to 80%. Unfortunately the illustrations of the various techniques are scattered over a number of texts and manuals, and the courses for database designers are often somewhat incomplete. The present paper shows a didactical experience which tackles this kind of limitations. In particular, the authors have prepared a textbook that includes twenty-one different index formats; it discusses advantages and disadvantages of each indexing technique, and has been positively validated during advanced courses on relational database design.展开更多
Modification to Newton gravitational interaction is presented. It provides an understanding of a novel universal gravitational field of particle origin that defines alternative attributes to elementary constituents of...Modification to Newton gravitational interaction is presented. It provides an understanding of a novel universal gravitational field of particle origin that defines alternative attributes to elementary constituents of matter particles and the gravitational interactions between them. It investigates gravitational relationship between two types of mass. The model assigns Coulombic gravitational interaction to DM particles and baryons by attributing self-antigravity to both normal matter and dark matter (DM). It defines the interaction as like particles repel while unlike particles attract. Metal-like force is proposed where same type mass (baryons) are gravitationally attracted to each other when a sea of DM particles are attracted to them and glue them together analogous to a metal bond. At close range, other dominant forces take place such as electromagnetic force. In light of this model, intergalactic self-repulsive DM particles are proposed to result in accelerating expansion of the universe. The model produces flat rotational curves for spiral galaxies and provides a physical explanation to MOND theory.展开更多
Under the influence of multiple factors such as Vietnam’s rising comprehensive strength,the complex security situation in Southeast Asia,and the intensification of competition between China and the United States,Viet...Under the influence of multiple factors such as Vietnam’s rising comprehensive strength,the complex security situation in Southeast Asia,and the intensification of competition between China and the United States,Vietnam has adjusted its national defense policy in recent years,promulgated relevant regulations,cultivated and raised national defense awareness,continued to strengthen traditional security defense in border and coastal areas,and gradually expanded prevention and cooperation in non-traditional security areas.It has also combined defense construction with socio-economic development,prioritized defense investment in border areas,islands,and military modernization,developed military science and technology,and improved maritime military forces.It will also continue to diversify its defense cooperation and expand defense exchanges and cooperation with ASEAN and overseas powers.It will attach importance to defense and friendly relations in the border areas of China and Vietnam,while at the same time seeking to reap maximum benefits from the competition between major powers and disputes in the South China Sea.These policies will help Vietnam strengthen its defense forces and realize its aspirations as a regional military power.展开更多
The development of gluten-free foodstuffs with high nutritional quality components is an important objective to achieve. Pachyrhizus ahipa is one of the few leguminous species that produce edible tuberous roots with h...The development of gluten-free foodstuffs with high nutritional quality components is an important objective to achieve. Pachyrhizus ahipa is one of the few leguminous species that produce edible tuberous roots with high nutritional value. Thus, the aim of this work was to formulate biscuits containing corn starch and 125 - 350 g·kg-1 of P. ahipa flour (AF) and to study the main physicochemical properties related to their nutritional and technological quality as well as their sensory acceptability. The formulation containing 250 g of AF kg-1 was selected for improving the product nutritional quality (i.e. higher protein content) without an extensive modification of textural properties. A formulation replacing corn starch by cassava flour (250 g·kg-1) was also analyzed. In this case, ahipa and cassava biscuits showed maximum force and energy required to bite twice and three times higher than the control, respectively. Slight variations were observed in color (E and browning index). The overall acceptability of biscuits formulated with both flours was better scored than the control by a sensory panel. Principal component analysis allowed to relate quality attributes, chemical composition, and sensory characteristics of biscuits containing cassava or ahipa flours. The results indicated that ahipa flour could satisfactorily substitute part of the corn starch used in the formulations of gluten-free biscuits.展开更多
Currently, human rights governance in Global South countries faces non-traditional human rights challenges in addition to the traditional ones. The view of human rights governance dominated by Western liberalism is al...Currently, human rights governance in Global South countries faces non-traditional human rights challenges in addition to the traditional ones. The view of human rights governance dominated by Western liberalism is already overstretched when facing the human rights governance dilemma of the less-developed countries. The proposal to build a community with a shared future for mankind as well as The Belt and Road have contributed new Chinese wisdom and action plans for South-South cooperation and global governance rights both theoretically and practically, which has important significance for easing the predicament of the human rights protection in the Global South.展开更多
The machining of hard-to-cut materials with a high degree of precision and high surface quality is one of the most critical considerations when fabricating various state-of-the-art engineered components.In this invest...The machining of hard-to-cut materials with a high degree of precision and high surface quality is one of the most critical considerations when fabricating various state-of-the-art engineered components.In this investigation,a comprehensive three-dimensional model was developed and numerically simulated to predict kerf profiles and material removal rates while drilling the aluminum-7075-T6 aerospace alloy.Kerf profile and material removal prediction involved three stages:jet dynamic flow modeling,abrasive particle tracking,and erosion rate pre-diction.Experimental investigations were conducted to validate the developed model.The results indicate that the jet dynamic characteristics and flow of abrasive particles alter the kerf profiles,where the top kerf diameter increases with increasing jet pressure and standoff distance.The kerf depth and hole aspect ratio increase with jet pressure,but decrease with standoff distance and machining time.Crosssectional profiles were characterized by progressive edge rounding and parabolic shapes.Defects can be minimized by utilizing high jet pressure and small standoff distance.The material removal rate increases with increasing jet pressure,abrasive particle size,and exposure time,but decreases with increasing standoff distance.展开更多
The anti-terror campaign in the Middle East is the key and influential part of global anti-terror endeavor,which is one of the most challenging global governance issues in the international community.It is closely lin...The anti-terror campaign in the Middle East is the key and influential part of global anti-terror endeavor,which is one of the most challenging global governance issues in the international community.It is closely linked with the transformation of the international system and the reconstruction of the world’s new political and economic order.Within the background of economic globalization,the Middle East Islamic countries are confronted with the problems of promoting reform and development,facilitating institutional reform and social transformation.Internally,the Middle East terrorism originates from the complicated historical,social,religious and ethnic conflicts;externally,the Middle East terrorism hinges on interference,invasion,occupation,and the rival for territory,recourses and interest.China’s anti-terror endeavor aims at protecting its overseas interest and meanwhile,it reflects China’s unique idea and mode of global governance.展开更多
文摘Non-traditional security issues have arisen since the 1960s,especially after the end of the Cold War,and are becoming a major issue in world security and politics.This reflects tremendous changes in the world situation.With diverse causes and plural referent objects,non-traditional security issues cover nearly all the problems in the world today and make development difficult to sustain.This raises the question of whether human society and the earth can survive.Power politics one-sidedly stresses the role of power,endangering the harmonious development of nations and the whole of human society.It is not at all conducive to the solution of non-traditional security issues.The solution of non-traditional security issues demands cooperation from all actors in the international community.Multiple means are needed to solve these issues.Equal dialogue between all the actors,which can easily be attained,will play an effective role,as long as all actors respect each other's differences.
文摘This paper reports results of investigations of some surface characteristics, and resulting performance of parts proc-essed using non-traditional finishing methods. The friction factor, precision keeping and anti-conglutination performance of the finished surfaces are considered, and surface characteristics such as microtopography and machining texture were investigated. The overall performance of surfaces finished using non-traditional finishing methods was found to be significantly better than that of traditional finishing methods.
文摘The article considers a new and non-traditional form of dialogue. Calling it a "spiritual dialogue" or the intersection of thoughts, the author comments on this type of dialogue as a basis for interreligious, intercultural and intercivilizational dialogues, seeing it as their main motive force. In this study, firstly, traditional and non-traditional dialogues are compared and indicate their specific features on the basis of the work of the Eastern and the West thinkers. Then, the nontraditional dialogue has been considered in the context of modern information chaos. The last section of the article is devoted to the analysis of the basic principles of non-traditional dialogue, emphasizing the role of language. The conclusion of the article once again highlights the importance of non-traditional dialogue that starts in the inner world of the human being, which gives him a possibility to observe an object from two viewpoints and merge and these different views in the mind.
文摘We are publishing two stories about how in Sichuan Province, southwest China, farmers are getting rich with help from local governments by developing "non-traditional undertakings." In China's current official terminology, a "non-traditional undertaking" can be anything other than the undertaking on which farmers, by tradition, depend for the bulk of their incomes-for example, crop and animal farming in most of China's farming areas. "Non-traditional" undertakings are more profitable than "traditional" ones.
基金financially supported by the National Natural Science Foundation of China (Grant No. 41729001)the National Science Foundation (Grant No. EAR-1747706)+2 种基金the European Research Council under the H2020 framework program/ERC grant agreement (Grant No. #637503-Pristine)the UnivEarthS Labex program at Sorbonne Paris Cité (Grant Nos. #ANR-10-LABX-0023 and #ANR-11-IDEX-0005-02)the ANR through a chaire d’excellence Sorbonne Paris Cité
文摘The Earth has grown from chaotically mixed small dusts and gases to its present highly differentiated layered structure over the past 4.567 billion years. This differentiation has led to the formation of the atmosphere, hydrosphere,biosphere, crust, mantle, and core. The timing and mechanism for the formation and evolution of these different layers are still subjects of intense debate. This review brings together recent advances in using non-traditional stable isotopes to constrain major events and processes leading to the formation and differentiation of the Earth, including the Moon-forming giant impact, crustmantle interactions, evolution of life, the rise of atmospheric oxygen, extreme paleoclimate changes, and cooling rate of magmas.
文摘Non-traditional security, often abbreviated to NTS, is a popular but rather ambiguousconcept within and outside academic circles. How to accurately define this term? Whatshould be considered in prioritising the needs to curb various NTS threats, given a countryslimited resources and capacities? By raising thought-provoking questions, the author triesto explain the perplexity concerning NTS issues, arguing that NTS is important in economic,political and security sense, but that more efforts are needed from the academics in order toreach a consensus in understanding and dealing with NTS issues.
文摘With the development of AI,a large amount of cyberbullying language flooded into the Internet.Cyberbullying language damages the online environment and causes mental harm to the victims of online bullying.Many researchers,therefore,have paid much attention to the problem.This study collected online comments targeted at Prince Harry and Meghan Markle as a corpus and then analyzed text data based on Critical Discourse Analysis by using text-mining tools to explore the factors that contribute to the social ideological effects of the cyberbullying language.The research results show that cultural differences,prejudice,or social exclusion due to race or gender form cyberbullying on social media.
基金financially supported by National Natural Science Foundation of China(Grant Nos.41503011 40930425,41573007,41173026)973 Program(2014Cb440904)+1 种基金CAS/SAFEA International Partnership Program for Creative Research Teams(KZZD-EW-TZ-20)the 12th Five-Year Plan project of State Key Laboratory of Ore-deposit Geochemistry,Chinese Academy of Sciences(SKLODG-ZY125-07)
文摘Cadmium(Cd) is a scarce, but not an extremely rare element in the Earth's crust(crustal average: 0.2 ppm Cd). Geochemically, Cd exhibits thiophile, lithophile, and volatile behavior in different geologic processes. Biologically, it is a nutrient-like element that is closely related to P and Zn and is toxic element to organisms. Presently, Cd isotopes have been successfully utilized to trace Cd sources and nutrient cycling in marine systems in addition to unearthing other geochemical processes. Using published studies and our recent work, this survey summarizes the chemical preparation and mass spectrometry of Cd isotopes. It also reviews Cd isotopic compositions and fractionation mechanisms in nature as well as experiments.
基金Scientific Bureau of the University of Catania for language support
文摘Pre-diabetes, which is typically defined as blood glucose concentrations higher than normal but lower than thediabetes threshold, is a high-risk state for diabetes and cardiovascular disease development. As such, it represents three groups of individuals: Those with impaired fasting glucose(IFG), those with impaired glucose tolerance(IGT) and those with a glycated haemoglobin(HbA1c) between 39-46 mmol/mol. Several clinical trials have shown the important role of IFG, IGT and HbA1c -pre-diabetes as predictive tools for the risk of developing type 2 diabetes. Moreover, with regard to cardiovascular disease, pre-diabetes is associated with more advanced vascular damage compared with normoglycaemia, independently of confounding factors. In view of these observations, diagnosis of pre-diabetes is mandatory to prevent or delay the development of the disease and its complications; however, a number of previous studies reported that the concordance between pre-diabetes diagnoses made by IFG, IGT or HbA1c is scarce and there are conflicting data as to which of these methods best predicts cardiovascular disease. This review highlights recent studies and cur-rent controversies in the field. In consideration of the expected increased use of HbA1c as a screening tool to identify individuals with alteration of glycaemic homeo-stasis, we focused on the evidence regarding the ability of HbA1c as a diagnostic tool for pre-diabetes and as a useful marker in identifying patients who have an increased risk for cardiovascular disease. Finally, we reviewed the current evidence regarding non-traditional glycaemic biomarkers and their use as alternatives to or additions to traditional ones.
基金supported by the Research Foundation Flanders(FWOproject G0A6517N)+8 种基金the Belgian Federal Science Policy Office(BELSPOproject Chicxulub),the Excellence of Science Program(EoS project ET-HoME ID30442502)the VUB Strategic Research Programthe personal PhD fellowship awarded(projects11E6619N,11E6621N)the Fonds de la Recherche Scientifique(FRS-FNRS)for supportthe FWO EoS project ET-HoMEfunding for the acquisition of the MC-ICP-MS instrumentation(ZW15-02–G0H6216N)support from FWO under the form of the aforementioned EoS project and BOF-UGentprovided by IODPICDP Expedition 364,which was jointly funded by the International Ocean Discovery Program and the International Continental Scientific Drilling Program,with contributions and logistical support from the Yucatán State Government and the National Autonomous University of Mexico。
文摘This work presents isotopic data for the non-traditional isotope systems Fe,Cu,and Zn on a set of Chicxulub impactites and target lithologies with the aim of better documenting the dynamic processes taking place during hypervelocity impact events,as well as those affecting impact structures during the post-impact phase.The focus lies on material from the recent IODP-ICDP Expedition 364 Hole M0077A drill core obtained from the offshore Chicxulub peak ring.Two ejecta blanket samples from the UNAM 5 and 7 cores were used to compare the crater lithologies with those outside of the impact structure.The datasets of bulk Fe,Cu,and Zn isotope ratios are coupled with petrographic observations and bulk major and trace element compositions to disentangle equilibrium isotope fractionation effects from kinetic processes.The observed Fe and Cu isotopic signatures,with δ^(56/54)Fe ranging from0.95‰to 0.58‰and δ^(65/63)Cu from0.73‰to 0.14‰,mostly reflect felsic,mafic,and carbonate target lithology mixing and secondary sulfide mineral formation,the latter associated to the extensive and long-lived(>105 years)hydrothermal system within Chicxulub structure.On the other hand,the stable Zn isotope ratios provide evidence for volatility-governed isotopic fractionation.The heavier Zn isotopic compositions observed for the uppermost part of the impactite sequence and a metamorphic clast(δ^(66/64)Zn of up to 0.80‰and 0.87‰,respectively)relative to most basement lithologies and impact melt rock units indicate partial vaporization of Zn,comparable to what has been observed for Cretaceous-Paleogene boundary layer sediments around the world,as well as for tektites from various strewn fields.In contrast to previous work,our data indicate that an isotopically light Zn reservoir(δ^(66/64)Zn down to0.49‰),of which the existence has previously been suggested based on mass balance considerations,may reside within the upper impact melt rock(UIM)unit.This observation is restricted to a few UIM samples only and cannot be extended to other target or impact melt rock units.Light isotopic signatures of moderately volatile elements in tektites and microtektites have previously been linked to(back-)condensation under distinct kinetic regimes.Although some of the signatures observed may have been partially overprinted during post-impact processes,our bulk data confirm impact volatilization and condensation of Zn,which may be even more pronounced at the microscale,with variable degrees of mixing between isotopically distinct reservoirs,not only at proximal to distal ejecta sites,but also within the lithologies associated with the Chicxulub impact crater.
文摘The authors investigated plant species selected for charcoal production. Then, they compared these species with those exploited for charcoal production in Togo, another West African country. The study in Ghana took place in six localities in the Volta Region. Simple ranking was used in the analysis of the species. A total of 35 species belonging to 31 genera were used. Five of these are non-traditional charcoal-making species, implying the increasing diversity of the plants used. Anogeissus leiocarpus ranked first with over 79% of the producers exploiting it and was reported as a preferred or a category 1 species for charcoal production in Togo. Out of the 34 woody species exploited in Togo, 10 are similar to those used in the study area. The ranking used are compared favourably with the categorization used in the Togolese studies.
文摘The security threats to Shanghai World Expo were multi-faceted, ranging from terrorist threat to ethnic separatist threat, from foreign diplomatic and political disputes to domestic mass disturbances as well as serious social crimes The first was from terrorist threat, and the global Jihad network in Eurasia was looming in the early 21st century, which was guided by radical ideologies; the second threat was from ethnic separatist groups; the third threat was related with foreign personnel and diplomats' security; the fourth threat was from mass disturbances, and the fifth was from serious social crimes. China's measures to these potential multi-faceted challenges were serious and various, including preventing terrorist attacks through international cooperation, lessening ethnic separatists' dissatisfaction and avoiding possible mass demonstration, reducing the chance of domestic mass disturbances, guaranteeing public transportation and aerospace security, making extensive use of advanced technologies and referring to other countries' expertise in security check, seeking help from other provinces bordering Shanghai, and strengthening control over explosive materials, etc.. Nevertheless, the efficacy of the above-mentioned countermeasures was problematic, for they were more defensive than offensive, more passive than proactive, and more tactical than strategic.
文摘There are several indexing techniques that can optimize system performances. The choice of the right index type in a schema can improve the DB performances by up to 80%. Unfortunately the illustrations of the various techniques are scattered over a number of texts and manuals, and the courses for database designers are often somewhat incomplete. The present paper shows a didactical experience which tackles this kind of limitations. In particular, the authors have prepared a textbook that includes twenty-one different index formats; it discusses advantages and disadvantages of each indexing technique, and has been positively validated during advanced courses on relational database design.
文摘Modification to Newton gravitational interaction is presented. It provides an understanding of a novel universal gravitational field of particle origin that defines alternative attributes to elementary constituents of matter particles and the gravitational interactions between them. It investigates gravitational relationship between two types of mass. The model assigns Coulombic gravitational interaction to DM particles and baryons by attributing self-antigravity to both normal matter and dark matter (DM). It defines the interaction as like particles repel while unlike particles attract. Metal-like force is proposed where same type mass (baryons) are gravitationally attracted to each other when a sea of DM particles are attracted to them and glue them together analogous to a metal bond. At close range, other dominant forces take place such as electromagnetic force. In light of this model, intergalactic self-repulsive DM particles are proposed to result in accelerating expansion of the universe. The model produces flat rotational curves for spiral galaxies and provides a physical explanation to MOND theory.
基金This work was supported by the National Social Science Foundation of China(Grant no.18AGJ007).
文摘Under the influence of multiple factors such as Vietnam’s rising comprehensive strength,the complex security situation in Southeast Asia,and the intensification of competition between China and the United States,Vietnam has adjusted its national defense policy in recent years,promulgated relevant regulations,cultivated and raised national defense awareness,continued to strengthen traditional security defense in border and coastal areas,and gradually expanded prevention and cooperation in non-traditional security areas.It has also combined defense construction with socio-economic development,prioritized defense investment in border areas,islands,and military modernization,developed military science and technology,and improved maritime military forces.It will also continue to diversify its defense cooperation and expand defense exchanges and cooperation with ASEAN and overseas powers.It will attach importance to defense and friendly relations in the border areas of China and Vietnam,while at the same time seeking to reap maximum benefits from the competition between major powers and disputes in the South China Sea.These policies will help Vietnam strengthen its defense forces and realize its aspirations as a regional military power.
基金Financial support provided by the ANPCyT(PICT 2011-1213)CONICET(PIP 0555)is gratefully acknowledged.
文摘The development of gluten-free foodstuffs with high nutritional quality components is an important objective to achieve. Pachyrhizus ahipa is one of the few leguminous species that produce edible tuberous roots with high nutritional value. Thus, the aim of this work was to formulate biscuits containing corn starch and 125 - 350 g·kg-1 of P. ahipa flour (AF) and to study the main physicochemical properties related to their nutritional and technological quality as well as their sensory acceptability. The formulation containing 250 g of AF kg-1 was selected for improving the product nutritional quality (i.e. higher protein content) without an extensive modification of textural properties. A formulation replacing corn starch by cassava flour (250 g·kg-1) was also analyzed. In this case, ahipa and cassava biscuits showed maximum force and energy required to bite twice and three times higher than the control, respectively. Slight variations were observed in color (E and browning index). The overall acceptability of biscuits formulated with both flours was better scored than the control by a sensory panel. Principal component analysis allowed to relate quality attributes, chemical composition, and sensory characteristics of biscuits containing cassava or ahipa flours. The results indicated that ahipa flour could satisfactorily substitute part of the corn starch used in the formulations of gluten-free biscuits.
基金a periodical achievement of the special project "On the Orientation of Human Rights for the Happy Life in the New Era" of the 19th National Congress of the Communist Party of China of Southwest University of Political Science and Law
文摘Currently, human rights governance in Global South countries faces non-traditional human rights challenges in addition to the traditional ones. The view of human rights governance dominated by Western liberalism is already overstretched when facing the human rights governance dilemma of the less-developed countries. The proposal to build a community with a shared future for mankind as well as The Belt and Road have contributed new Chinese wisdom and action plans for South-South cooperation and global governance rights both theoretically and practically, which has important significance for easing the predicament of the human rights protection in the Global South.
基金supported by the Japan International Cooperation Agency(JICA)in the scope of the Egypt-Japan University of Science and Technology(E-JUST)and special thanks to Alexstone Co.,Ltd.for allowing us to use their machining center for experiments.
文摘The machining of hard-to-cut materials with a high degree of precision and high surface quality is one of the most critical considerations when fabricating various state-of-the-art engineered components.In this investigation,a comprehensive three-dimensional model was developed and numerically simulated to predict kerf profiles and material removal rates while drilling the aluminum-7075-T6 aerospace alloy.Kerf profile and material removal prediction involved three stages:jet dynamic flow modeling,abrasive particle tracking,and erosion rate pre-diction.Experimental investigations were conducted to validate the developed model.The results indicate that the jet dynamic characteristics and flow of abrasive particles alter the kerf profiles,where the top kerf diameter increases with increasing jet pressure and standoff distance.The kerf depth and hole aspect ratio increase with jet pressure,but decrease with standoff distance and machining time.Crosssectional profiles were characterized by progressive edge rounding and parabolic shapes.Defects can be minimized by utilizing high jet pressure and small standoff distance.The material removal rate increases with increasing jet pressure,abrasive particle size,and exposure time,but decreases with increasing standoff distance.
基金the product of the Chinese Educational Ministry program“Islamic Middle East Region and the Transition of International System”(08JZD0039)it is also supported by the Shanghai International Studies University“211”program(StageⅢ)Key Discipline of Shanghai(B702).
文摘The anti-terror campaign in the Middle East is the key and influential part of global anti-terror endeavor,which is one of the most challenging global governance issues in the international community.It is closely linked with the transformation of the international system and the reconstruction of the world’s new political and economic order.Within the background of economic globalization,the Middle East Islamic countries are confronted with the problems of promoting reform and development,facilitating institutional reform and social transformation.Internally,the Middle East terrorism originates from the complicated historical,social,religious and ethnic conflicts;externally,the Middle East terrorism hinges on interference,invasion,occupation,and the rival for territory,recourses and interest.China’s anti-terror endeavor aims at protecting its overseas interest and meanwhile,it reflects China’s unique idea and mode of global governance.