Kinematics has evolved with and contributed significantly to human demands. For example, slider-crank mechanisms have been widely used in engines since the industrial revolution. Additionally, constant-velocity shaft ...Kinematics has evolved with and contributed significantly to human demands. For example, slider-crank mechanisms have been widely used in engines since the industrial revolution. Additionally, constant-velocity shaft couplings have been developed to meet the needs of the automobile industry since the 1920＇s. With the development of robots, robot kinematics has been one of the research focuses in Kinematics since the 1970＇s.展开更多
BMW China R&D Center officially opened its facility in Beijing’s Shunyi District on May 15, 2018. The center is by far the biggest presence of BMW R&D outside Germany, among those in the U.S., Japan, South Ko...BMW China R&D Center officially opened its facility in Beijing’s Shunyi District on May 15, 2018. The center is by far the biggest presence of BMW R&D outside Germany, among those in the U.S., Japan, South Korea, and China, and its size far exceeds the company’s R&D center in Silicon Valley, northern California, U.S.A.展开更多
Fortune magazine has released China 100 in its September issue. This is the second consecutive year Fortune has released China 100. The ranking is made according to the business income of the country's major compa...Fortune magazine has released China 100 in its September issue. This is the second consecutive year Fortune has released China 100. The ranking is made according to the business income of the country's major companies in 2001.展开更多
Two recent bond offerings by China National Offshore Oil Corporation(CNOOC)and China Petrochemical Corporation(Sinopce)offer strong evidence of Chinese ascendancy to the world stage of finance,says veteran banker,Ther...Two recent bond offerings by China National Offshore Oil Corporation(CNOOC)and China Petrochemical Corporation(Sinopce)offer strong evidence of Chinese ascendancy to the world stage of finance,says veteran banker,Therese Esperdy,who heads Banking for Asia Pacific Corporate&Investment Bank at JP Morgan.The bond offering issued by CNOOC and Sinopec in the autumn of 2013 will set China in the global arena with full benefit rights as a prime player on world financial markets.展开更多
The forum brings together leaders from the Fortune 500 companies so that they may discuss matters on world economic development, Like the Fortune 500 list, forum findings are highly regarded by entrepreneurs and compa...The forum brings together leaders from the Fortune 500 companies so that they may discuss matters on world economic development, Like the Fortune 500 list, forum findings are highly regarded by entrepreneurs and company leaders. me upcoming forum will give world business leaders the Opportunity to learn more about China and to observe Chinese markets. At the same time, the forum will give Chinese entrepreneurs the opportunity to solicit direct investment from transnationals.展开更多
Chinese oil giants are eyeing an expanded presence in Brazil, winning holdings in three blocks awarded in Brazil＇s deepwater oil auction in a historic opening of the pre-salt play to foreign operators. Consortiums co...Chinese oil giants are eyeing an expanded presence in Brazil, winning holdings in three blocks awarded in Brazil＇s deepwater oil auction in a historic opening of the pre-salt play to foreign operators. Consortiums comprising China＇s three major oil giants, China National Petroleum Corp, China Petroleum ＆ Chemical Corp and China National Offshore Oil Corp, have respectively won three blocks recently, deepening the energy cooperation between the two countries. China has the technology,展开更多
AS a Chinese proverb goes, if two brothers are of the same mind, their sharpness can cut through metal. China CNR Corp. （CNR） and China CSR Corp. （CSR）, the world＇s two largest railway transportation equipment ma...AS a Chinese proverb goes, if two brothers are of the same mind, their sharpness can cut through metal. China CNR Corp. （CNR） and China CSR Corp. （CSR）, the world＇s two largest railway transportation equipment manufacturers, have decided to merge to compete in the global arena.展开更多
At the core of current China-U.S. relations are post-Cold War experiences and major differences when it comes to politics, economy and security. But despite these issues and the rhetoric that surrounds them, the poten...At the core of current China-U.S. relations are post-Cold War experiences and major differences when it comes to politics, economy and security. But despite these issues and the rhetoric that surrounds them, the potential for cooperation remains great In an article published by Global Times, Wu Xinbo, Deputy Principal of the International Relations and Public Affairs College of Shanghai Fudan University, shares his analysis of bilateral ties. Excerpts follow:展开更多
On June 27,China(Qinghai)Lithium Industry and Power Battery International Summit Forum2018 was officially held in Xining,Qinghai.Wang Liming,vice-governor of Qinghai,noted at the forum that Qinghai boasts advantaged s...On June 27,China(Qinghai)Lithium Industry and Power Battery International Summit Forum2018 was officially held in Xining,Qinghai.Wang Liming,vice-governor of Qinghai,noted at the forum that Qinghai boasts advantaged salt lake resources,the proved lithium resources reserve here accounts for over 1/3 of the global resources reserve and over展开更多
A science artist brings prehistoric creatures back to life Zhao Chuang is a 43-year-old science artist working in Beijing.The illustrator's job bridgles science and art by painting and sculpting ancient extinct sp...A science artist brings prehistoric creatures back to life Zhao Chuang is a 43-year-old science artist working in Beijing.The illustrator's job bridgles science and art by painting and sculpting ancient extinct species based on information collected from fossils.Zhao reproduces each element described in paleontological papers in an artistic way,and the blanks in scientific research are flled by his logic and imagination.展开更多
The world's first and most advanced 23,000 TEU dual-fuel powered container ship,the CMA CGM Sorhonne,independently developed,designed and built by CSSC,was named in Hudong Zhonghua and delivered to French CMA CGM ...The world's first and most advanced 23,000 TEU dual-fuel powered container ship,the CMA CGM Sorhonne,independently developed,designed and built by CSSC,was named in Hudong Zhonghua and delivered to French CMA CGM on June 29.So far,the project 9“Green Giants”were all completed and delivered on time,achieving perfect ending and presenting a gift to CPC's centenary.Since the delivery of the first ship on September 22 last year,the goal of an average monthly completion and delivery of one vessel has been achieved.展开更多
A large fire of 233 ha in Huascarán National Park in Peru provided an opportunity to compare plant and bird responses in burned and nearby unburned zones of the puna. Heights and live diameters of flagship Puya r...A large fire of 233 ha in Huascarán National Park in Peru provided an opportunity to compare plant and bird responses in burned and nearby unburned zones of the puna. Heights and live diameters of flagship Puya raimondii rosettes(assigned to four broad developmental phases), plant communities(66 species in 24 families and nine growth forms) and bird communities(77 species in six trophic guilds) were monitored after the fire. Although no mortality was observed, Puya raimondii plants were affected by the fire, losing approximately 60% of their photosynthetic area across all developmental phases, but recovered quickly during the first two years after fire. The comparison of Puya rosette recovery after fire was complicated by the changes in live rosette diameter for unburned plants, which showed plasticity of photosynthetic area linked to seasonal and annual fluctuations in precipitation in this relatively dry environment(decreased by 26% for mature adult plants over the study period). Fire caused an immediate change in the density, biomass and composition of vegetation. Although the species present remained similar, their abundances changed significantly immediately after the fire, with notable reductions in dominant tussock grasses. This provided opportunities for other plants, resulting in higher postfire diversity of plant species, genera, families and growth forms. In turn, the changes in vegetation after fire affected the composition of birds according to their trophic guild. Granivores largely disappeared,generalists were mostly unaffected, and other guilds showed a more complex response. As the vegetation recovered, most displaced birds returned within approximately one year.展开更多
Membrane tension plays a crucial role in various fundamental cellular processes,with one notable example being the T cell-mediated elimination of tumor cells through perforin-induced membrane perforation by amplifying...Membrane tension plays a crucial role in various fundamental cellular processes,with one notable example being the T cell-mediated elimination of tumor cells through perforin-induced membrane perforation by amplifying cellular force.However,the mechanisms governing the regulation of biomolecular activities at the cell interface by membrane tension remain elusive.In this study,we investigated the correlation between membrane tension and poration activity of melittin,a prototypical pore-forming peptide,using dynamic giant unilamellar vesicle leakage assays combined with flickering tension analysis,molecular dynamics simulations,and live cell assays.The results demonstrate that an increase in membrane tension enhances the activity of melittin,particularly near its critical pore-forming concentration.Moreover,peptide actions such as binding,insertion,and aggregation in the membrane further influence the evolution of membrane tension.Live cell experiments reveal that artificially enhancing membrane tension effectively enhances melittin’s ability to induce pore formation and disrupt membranes,resulting in up to a ten-fold increase in A549 cell mortality when exposed to a concentration of 2.0-μg·mL^(-1)melittin.Our findings elucidate the relationship between membrane tension and the mechanism of action as well as pore-forming efficiency of melittin,while providing a practical mechanical approach for regulating functional activity of molecules at the cell-membrane interface.展开更多
文摘Kinematics has evolved with and contributed significantly to human demands. For example, slider-crank mechanisms have been widely used in engines since the industrial revolution. Additionally, constant-velocity shaft couplings have been developed to meet the needs of the automobile industry since the 1920＇s. With the development of robots, robot kinematics has been one of the research focuses in Kinematics since the 1970＇s.
文摘BMW China R&D Center officially opened its facility in Beijing’s Shunyi District on May 15, 2018. The center is by far the biggest presence of BMW R&D outside Germany, among those in the U.S., Japan, South Korea, and China, and its size far exceeds the company’s R&D center in Silicon Valley, northern California, U.S.A.
文摘Fortune magazine has released China 100 in its September issue. This is the second consecutive year Fortune has released China 100. The ranking is made according to the business income of the country's major companies in 2001.
文摘Two recent bond offerings by China National Offshore Oil Corporation(CNOOC)and China Petrochemical Corporation(Sinopce)offer strong evidence of Chinese ascendancy to the world stage of finance,says veteran banker,Therese Esperdy,who heads Banking for Asia Pacific Corporate&Investment Bank at JP Morgan.The bond offering issued by CNOOC and Sinopec in the autumn of 2013 will set China in the global arena with full benefit rights as a prime player on world financial markets.
文摘The forum brings together leaders from the Fortune 500 companies so that they may discuss matters on world economic development, Like the Fortune 500 list, forum findings are highly regarded by entrepreneurs and company leaders. me upcoming forum will give world business leaders the Opportunity to learn more about China and to observe Chinese markets. At the same time, the forum will give Chinese entrepreneurs the opportunity to solicit direct investment from transnationals.
文摘Chinese oil giants are eyeing an expanded presence in Brazil, winning holdings in three blocks awarded in Brazil＇s deepwater oil auction in a historic opening of the pre-salt play to foreign operators. Consortiums comprising China＇s three major oil giants, China National Petroleum Corp, China Petroleum ＆ Chemical Corp and China National Offshore Oil Corp, have respectively won three blocks recently, deepening the energy cooperation between the two countries. China has the technology,
文摘AS a Chinese proverb goes, if two brothers are of the same mind, their sharpness can cut through metal. China CNR Corp. （CNR） and China CSR Corp. （CSR）, the world＇s two largest railway transportation equipment manufacturers, have decided to merge to compete in the global arena.
文摘At the core of current China-U.S. relations are post-Cold War experiences and major differences when it comes to politics, economy and security. But despite these issues and the rhetoric that surrounds them, the potential for cooperation remains great In an article published by Global Times, Wu Xinbo, Deputy Principal of the International Relations and Public Affairs College of Shanghai Fudan University, shares his analysis of bilateral ties. Excerpts follow:
文摘On June 27,China(Qinghai)Lithium Industry and Power Battery International Summit Forum2018 was officially held in Xining,Qinghai.Wang Liming,vice-governor of Qinghai,noted at the forum that Qinghai boasts advantaged salt lake resources,the proved lithium resources reserve here accounts for over 1/3 of the global resources reserve and over
文摘A science artist brings prehistoric creatures back to life Zhao Chuang is a 43-year-old science artist working in Beijing.The illustrator's job bridgles science and art by painting and sculpting ancient extinct species based on information collected from fossils.Zhao reproduces each element described in paleontological papers in an artistic way,and the blanks in scientific research are flled by his logic and imagination.
文摘The world's first and most advanced 23,000 TEU dual-fuel powered container ship,the CMA CGM Sorhonne,independently developed,designed and built by CSSC,was named in Hudong Zhonghua and delivered to French CMA CGM on June 29.So far,the project 9“Green Giants”were all completed and delivered on time,achieving perfect ending and presenting a gift to CPC's centenary.Since the delivery of the first ship on September 22 last year,the goal of an average monthly completion and delivery of one vessel has been achieved.
基金supported by the Universidad Nacional Mayor de San Marcos: Resolución Rectoral (RR) N° 00883-R-06, project code 061001191RR N° 00914-R-07, project code 071001281and RR N°03556-R-19, project code D19120061。
文摘A large fire of 233 ha in Huascarán National Park in Peru provided an opportunity to compare plant and bird responses in burned and nearby unburned zones of the puna. Heights and live diameters of flagship Puya raimondii rosettes(assigned to four broad developmental phases), plant communities(66 species in 24 families and nine growth forms) and bird communities(77 species in six trophic guilds) were monitored after the fire. Although no mortality was observed, Puya raimondii plants were affected by the fire, losing approximately 60% of their photosynthetic area across all developmental phases, but recovered quickly during the first two years after fire. The comparison of Puya rosette recovery after fire was complicated by the changes in live rosette diameter for unburned plants, which showed plasticity of photosynthetic area linked to seasonal and annual fluctuations in precipitation in this relatively dry environment(decreased by 26% for mature adult plants over the study period). Fire caused an immediate change in the density, biomass and composition of vegetation. Although the species present remained similar, their abundances changed significantly immediately after the fire, with notable reductions in dominant tussock grasses. This provided opportunities for other plants, resulting in higher postfire diversity of plant species, genera, families and growth forms. In turn, the changes in vegetation after fire affected the composition of birds according to their trophic guild. Granivores largely disappeared,generalists were mostly unaffected, and other guilds showed a more complex response. As the vegetation recovered, most displaced birds returned within approximately one year.
基金supported by the National Natural Science Foundation of China(Grant Nos.12274307,32230063,21774092,and 12347102)the Basic and Applied Basic Research Foundation of Guangdong Province,China(Grant No.2023A1515011610).
文摘Membrane tension plays a crucial role in various fundamental cellular processes,with one notable example being the T cell-mediated elimination of tumor cells through perforin-induced membrane perforation by amplifying cellular force.However,the mechanisms governing the regulation of biomolecular activities at the cell interface by membrane tension remain elusive.In this study,we investigated the correlation between membrane tension and poration activity of melittin,a prototypical pore-forming peptide,using dynamic giant unilamellar vesicle leakage assays combined with flickering tension analysis,molecular dynamics simulations,and live cell assays.The results demonstrate that an increase in membrane tension enhances the activity of melittin,particularly near its critical pore-forming concentration.Moreover,peptide actions such as binding,insertion,and aggregation in the membrane further influence the evolution of membrane tension.Live cell experiments reveal that artificially enhancing membrane tension effectively enhances melittin’s ability to induce pore formation and disrupt membranes,resulting in up to a ten-fold increase in A549 cell mortality when exposed to a concentration of 2.0-μg·mL^(-1)melittin.Our findings elucidate the relationship between membrane tension and the mechanism of action as well as pore-forming efficiency of melittin,while providing a practical mechanical approach for regulating functional activity of molecules at the cell-membrane interface.
