The authors show that the bubbles S^(2) × S^(2) can be created from vacuum fluctuation in the background de Sitter universes of k=0,1,so the space-time foam-like structure might really be constructed from bubbles...The authors show that the bubbles S^(2) × S^(2) can be created from vacuum fluctuation in the background de Sitter universes of k=0,1,so the space-time foam-like structure might really be constructed from bubbles of S2 x S2 in the very early inflating phase of our universe.Still,whether such foam-like structure persisted during the later evolution of the universe is a problem unsolved at present.展开更多
Three World Journals Created,two in Hongkong and other in Singapore.They are all bi-monthly e-periodicals in English,open-access(OA),peer-reviewed academic world journal series,created according to the PubMed Central ...Three World Journals Created,two in Hongkong and other in Singapore.They are all bi-monthly e-periodicals in English,open-access(OA),peer-reviewed academic world journal series,created according to the PubMed Central and SCI standards,supported by the editorial board of global experts in their research all over the world.展开更多
This paper presents an innovative switched-mode auto gain control (AGC) circuit with internally created reset module for DC-10Mb/s burst-mode unbalanced (BMU) optical data transmission. Conventional AGC circuit is...This paper presents an innovative switched-mode auto gain control (AGC) circuit with internally created reset module for DC-10Mb/s burst-mode unbalanced (BMU) optical data transmission. Conventional AGC circuit is inappropriate for BMU data transmission because it is based on average level detection and requires considerable time to settle on a predefined gain. Therefore, we adopt a fast switched-mode AGC based on peak level detection. After the gain is adjusted, the peak level detectors need to re-detect the peak level of the input signal. Thus, we develop an internally created reset module. This AGC with reset module exhibits a fast operation and achieves an adjusted stable gain within one-bit, avoiding any bit loss up to 10Mb/s data rate. During power-up, the peak level detectors possibly hold an uncertain level resulting in the bit-errors. We propose a power-up reset circuit to solve this problem. Designed in a 0.5μm CMOS technology, the circuit achieves an optical sensitivity of better than -30dBm and a wide dynamic range of over 30dB with a power dissipation of only 30 mW from a 5V supply.展开更多
Editor’s notes: In 2002 key popularized plan of China national sci-tech fruits, four belong to Qingdao city including Hisenses three fruits, astonishing all personnel inside and outside the trade. The three fruits ar...Editor’s notes: In 2002 key popularized plan of China national sci-tech fruits, four belong to Qingdao city including Hisenses three fruits, astonishing all personnel inside and outside the trade. The three fruits are KFR- (25G + 45L) W/BP frequency conversion 1 +2 airconditioner, commercial decision support system. Hisenses commercial guidance medium-to-small commercial management system. As a traditional household electrical appliances enterprise of 3C targets (household electrical appliances, telecommunications展开更多
Nanshu Town is a famous graphite town of Laixi City. Nanshu Town has 46 graphite enterprises with scattered distribution, incomplete industry chain, low output, and low value-added. In order to exert the resources adv...Nanshu Town is a famous graphite town of Laixi City. Nanshu Town has 46 graphite enterprises with scattered distribution, incomplete industry chain, low output, and low value-added. In order to exert the resources advantage, Nanshu Town has planed and builta building materials zone covering 800 thousand square meters since 2010. Kaonuo Ceramics, a key project of Qingdao City, was building here. Three deep-processing projects of graphite new materials with the total investment of CNY 480 million will be built in this zone.展开更多
Qaidam Basin in Qinghai Province has rich multiple complex resources with salt lakes as the core.These resources form a special condition for the development of green economy,having rare and particular nature.The
During the epidemic,the demand for COVID-19 prevention supplies surged.The demand for items such as gauze masks,alcohol for disinfection,disinfectants,and antiviral medicines resulted in rapid growth in the number of ...During the epidemic,the demand for COVID-19 prevention supplies surged.The demand for items such as gauze masks,alcohol for disinfection,disinfectants,and antiviral medicines resulted in rapid growth in the number of platform users and orders.The average volume of orders received by DingDang Medicine Express per day was eight times that of the same period last year.At its peak,user traffic reached 50 times that which would occur on a normal day.In one week,DingDang Medicine Express sold 2 million gauze masks,and nearly 1 million bottles of disinfectant.Until now,DingDang Medicine Express has also provided 9 million health services visits.展开更多
Following the Chinese market opening to the world, many international famous brand products have entered it, creating a grave challenge to Chinese enterprises. Now they have resolved to create famous brand products to...Following the Chinese market opening to the world, many international famous brand products have entered it, creating a grave challenge to Chinese enterprises. Now they have resolved to create famous brand products to compete on the international market. So famous brand products are now being created in Beijing. Since the reform and open展开更多
On March 31,2021,the working mechanism for Culture City of East Asia in China was set up in Shaoxing,Zhejiang,with the Ministry of Culture and Tourism as its lead body,marking an important step in developing this city...On March 31,2021,the working mechanism for Culture City of East Asia in China was set up in Shaoxing,Zhejiang,with the Ministry of Culture and Tourism as its lead body,marking an important step in developing this city branding programme.展开更多
Zhang Weiqing, director of the National Population and Family Planning Commission (NPFPC), disclosed at the inaugural meeting of the China Reproductive Health Industry Association (CRIA), held on March 26, 2007, t... Zhang Weiqing, director of the National Population and Family Planning Commission (NPFPC), disclosed at the inaugural meeting of the China Reproductive Health Industry Association (CRIA), held on March 26, 2007, that China will create an inspection system, a quality accreditation system, and an industry access system for better population structure and family planning.……展开更多
Lithium is becoming common in our everyday lives.It is the key ingredient in the batteries of our mobile phones and electric vehicles,but have you ever wondered where it comes from?A new study Ied by Prof.ZHAO Gang an...Lithium is becoming common in our everyday lives.It is the key ingredient in the batteries of our mobile phones and electric vehicles,but have you ever wondered where it comes from?A new study Ied by Prof.ZHAO Gang and Dr.Yerra Bharat Kumar from the National Astronomical Observatories of Chinese Academy of Sciences(NAOC)provides a fresh understanding of both how Lithium is made,and how it is destroyed.展开更多
For decades,meals for astronauts during their trips off planet have mostly consisted of prepackaged dehydrated or freeze-dried food,occasionally garnished with terrarium-grown lettuce(Fig.1)[1,2].With longer-term miss...For decades,meals for astronauts during their trips off planet have mostly consisted of prepackaged dehydrated or freeze-dried food,occasionally garnished with terrarium-grown lettuce(Fig.1)[1,2].With longer-term missions to extraterrestrial outposts on the near horizon,a US National Aeronautics and Space Agency(NASA)competition now in its final stages aims to meet the nutritional needs of astronauts on deep space voyages.An added benefit could be innovations in low-resource food production that could help feed Earth’s still growing human population.展开更多
Using clustered regularly interspaced short palindromic repeats(CRISPR)-based molecular tools,scientists are engineering-as they are also doing with plants.-animals with advantageous traits,like disease resistance and...Using clustered regularly interspaced short palindromic repeats(CRISPR)-based molecular tools,scientists are engineering-as they are also doing with plants.-animals with advantageous traits,like disease resistance and improved food yield.While these innovative techniques could one day be applied in humans,technical hurdles and ethical concerns likely place this possibility far in the future,The enhancements rely on germline gene editing,which alters the genes in a way that passes the changes on to offspring.Ger m-line gene editing differs from the somatic cell gene editing used in the highly promising new treatment recently approved for the human disease sickle cell anemia.展开更多
"hina and Africa can create amazing value,because Africa or Morocco and China have a lot of common points,and the 2024Summit of the Forum on China-Africa Cooperation (FOCAC) can make the relationship between Afri..."hina and Africa can create amazing value,because Africa or Morocco and China have a lot of common points,and the 2024Summit of the Forum on China-Africa Cooperation (FOCAC) can make the relationship between Africa or Morocco and China even stronger."In an interview with China's Foreign Trade,Mehdi Laraki,President of the Morocco-China Business Council said,"I've been here (China)more than 65 times,but I always feel like a child every time,it's just like a miracle.展开更多
The internet industry is the backbone of the digital age.Its social responsibility is not only related to the sustained development of the industry,but is also the key to building social trust and promoting social pro...The internet industry is the backbone of the digital age.Its social responsibility is not only related to the sustained development of the industry,but is also the key to building social trust and promoting social progress.The 2024(the 11th)China Internet Corporate Social Responsibility Forum organized by the Internet Society of China was held in Beijing on December 10.The theme of this forum was“30 years of cooperative responsibilities:jointly building social values in the digital age”,which aimed to explore new methods of social responsibility construction for the internet industry in the digital age,and promote the healthy and orderly development of the internet industry.展开更多
Mitigation requires public participation in monitoring and warning,but this works only in a well-ordered society.THE world is discharging greenhouse gas emissions at the fastest rate in history.This is increasing glob...Mitigation requires public participation in monitoring and warning,but this works only in a well-ordered society.THE world is discharging greenhouse gas emissions at the fastest rate in history.This is increasing global temperatures and creating the need for planning to prevent unavoidable and unprecedented climate events from becoming disasters.展开更多
With the help of governments at all levels,farmers and herdsmen in Tibet can now continually keep up with the progress of the times and social development through their own efforts.“Convenient facilities and relative...With the help of governments at all levels,farmers and herdsmen in Tibet can now continually keep up with the progress of the times and social development through their own efforts.“Convenient facilities and relatively stable incomes are making our life increasingly promising,”enthused Yangjen Lhamo,who lives in Naxingtang Community,Nagqu City,Tibet Autonomous Region.She believes that her children’s life will be better.展开更多
Former CEO of Heritage Malta recalls her first visit to China,which soon ushered in an array of cultural heritage conservation cooperation projects and exhibitions in the two countries.Awise and much respected profess...Former CEO of Heritage Malta recalls her first visit to China,which soon ushered in an array of cultural heritage conservation cooperation projects and exhibitions in the two countries.Awise and much respected professional congratulated me on my appointment as CEO of Heritage Malta in 2003.With her message of congratulations came also the passionate recommendation to visit China and to discover first-hand what China has to offer,possibly bringing some of that to the people and visitors of the Maltese Islands.That message stuck with me.Heritage Malta is the Maltese national agency for museums,conservation practice,and cultural heritage.Created by the Cultural Heritage Act,enacted in 2002,the National Agency replaced the former Museums Department.展开更多
As the most time-tested and influential art festival in Slovenia,the Ljubljana Festival invites renowned artists and groups from across the globe to offer high-standard arts performances to audience in centuried venue...As the most time-tested and influential art festival in Slovenia,the Ljubljana Festival invites renowned artists and groups from across the globe to offer high-standard arts performances to audience in centuried venues,meanwhile creating an excellent opportunity for musicians,actors,playwrights and painters of different nationalities to present their piece de resistance.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.19473005the Education Commit tee of Hu’nan Province.
文摘The authors show that the bubbles S^(2) × S^(2) can be created from vacuum fluctuation in the background de Sitter universes of k=0,1,so the space-time foam-like structure might really be constructed from bubbles of S2 x S2 in the very early inflating phase of our universe.Still,whether such foam-like structure persisted during the later evolution of the universe is a problem unsolved at present.
文摘Three World Journals Created,two in Hongkong and other in Singapore.They are all bi-monthly e-periodicals in English,open-access(OA),peer-reviewed academic world journal series,created according to the PubMed Central and SCI standards,supported by the editorial board of global experts in their research all over the world.
基金Supported by the Natural Science Foundation of Jiangsu Province ( BK2010411 ) and the National International Cooperation Project of China-Korea (2011DFA11310).
文摘This paper presents an innovative switched-mode auto gain control (AGC) circuit with internally created reset module for DC-10Mb/s burst-mode unbalanced (BMU) optical data transmission. Conventional AGC circuit is inappropriate for BMU data transmission because it is based on average level detection and requires considerable time to settle on a predefined gain. Therefore, we adopt a fast switched-mode AGC based on peak level detection. After the gain is adjusted, the peak level detectors need to re-detect the peak level of the input signal. Thus, we develop an internally created reset module. This AGC with reset module exhibits a fast operation and achieves an adjusted stable gain within one-bit, avoiding any bit loss up to 10Mb/s data rate. During power-up, the peak level detectors possibly hold an uncertain level resulting in the bit-errors. We propose a power-up reset circuit to solve this problem. Designed in a 0.5μm CMOS technology, the circuit achieves an optical sensitivity of better than -30dBm and a wide dynamic range of over 30dB with a power dissipation of only 30 mW from a 5V supply.
文摘Editor’s notes: In 2002 key popularized plan of China national sci-tech fruits, four belong to Qingdao city including Hisenses three fruits, astonishing all personnel inside and outside the trade. The three fruits are KFR- (25G + 45L) W/BP frequency conversion 1 +2 airconditioner, commercial decision support system. Hisenses commercial guidance medium-to-small commercial management system. As a traditional household electrical appliances enterprise of 3C targets (household electrical appliances, telecommunications
文摘Nanshu Town is a famous graphite town of Laixi City. Nanshu Town has 46 graphite enterprises with scattered distribution, incomplete industry chain, low output, and low value-added. In order to exert the resources advantage, Nanshu Town has planed and builta building materials zone covering 800 thousand square meters since 2010. Kaonuo Ceramics, a key project of Qingdao City, was building here. Three deep-processing projects of graphite new materials with the total investment of CNY 480 million will be built in this zone.
文摘Qaidam Basin in Qinghai Province has rich multiple complex resources with salt lakes as the core.These resources form a special condition for the development of green economy,having rare and particular nature.The
文摘During the epidemic,the demand for COVID-19 prevention supplies surged.The demand for items such as gauze masks,alcohol for disinfection,disinfectants,and antiviral medicines resulted in rapid growth in the number of platform users and orders.The average volume of orders received by DingDang Medicine Express per day was eight times that of the same period last year.At its peak,user traffic reached 50 times that which would occur on a normal day.In one week,DingDang Medicine Express sold 2 million gauze masks,and nearly 1 million bottles of disinfectant.Until now,DingDang Medicine Express has also provided 9 million health services visits.
文摘Following the Chinese market opening to the world, many international famous brand products have entered it, creating a grave challenge to Chinese enterprises. Now they have resolved to create famous brand products to compete on the international market. So famous brand products are now being created in Beijing. Since the reform and open
文摘On March 31,2021,the working mechanism for Culture City of East Asia in China was set up in Shaoxing,Zhejiang,with the Ministry of Culture and Tourism as its lead body,marking an important step in developing this city branding programme.
文摘 Zhang Weiqing, director of the National Population and Family Planning Commission (NPFPC), disclosed at the inaugural meeting of the China Reproductive Health Industry Association (CRIA), held on March 26, 2007, that China will create an inspection system, a quality accreditation system, and an industry access system for better population structure and family planning.……
文摘Lithium is becoming common in our everyday lives.It is the key ingredient in the batteries of our mobile phones and electric vehicles,but have you ever wondered where it comes from?A new study Ied by Prof.ZHAO Gang and Dr.Yerra Bharat Kumar from the National Astronomical Observatories of Chinese Academy of Sciences(NAOC)provides a fresh understanding of both how Lithium is made,and how it is destroyed.
文摘For decades,meals for astronauts during their trips off planet have mostly consisted of prepackaged dehydrated or freeze-dried food,occasionally garnished with terrarium-grown lettuce(Fig.1)[1,2].With longer-term missions to extraterrestrial outposts on the near horizon,a US National Aeronautics and Space Agency(NASA)competition now in its final stages aims to meet the nutritional needs of astronauts on deep space voyages.An added benefit could be innovations in low-resource food production that could help feed Earth’s still growing human population.
文摘Using clustered regularly interspaced short palindromic repeats(CRISPR)-based molecular tools,scientists are engineering-as they are also doing with plants.-animals with advantageous traits,like disease resistance and improved food yield.While these innovative techniques could one day be applied in humans,technical hurdles and ethical concerns likely place this possibility far in the future,The enhancements rely on germline gene editing,which alters the genes in a way that passes the changes on to offspring.Ger m-line gene editing differs from the somatic cell gene editing used in the highly promising new treatment recently approved for the human disease sickle cell anemia.
文摘"hina and Africa can create amazing value,because Africa or Morocco and China have a lot of common points,and the 2024Summit of the Forum on China-Africa Cooperation (FOCAC) can make the relationship between Africa or Morocco and China even stronger."In an interview with China's Foreign Trade,Mehdi Laraki,President of the Morocco-China Business Council said,"I've been here (China)more than 65 times,but I always feel like a child every time,it's just like a miracle.
文摘The internet industry is the backbone of the digital age.Its social responsibility is not only related to the sustained development of the industry,but is also the key to building social trust and promoting social progress.The 2024(the 11th)China Internet Corporate Social Responsibility Forum organized by the Internet Society of China was held in Beijing on December 10.The theme of this forum was“30 years of cooperative responsibilities:jointly building social values in the digital age”,which aimed to explore new methods of social responsibility construction for the internet industry in the digital age,and promote the healthy and orderly development of the internet industry.
文摘Mitigation requires public participation in monitoring and warning,but this works only in a well-ordered society.THE world is discharging greenhouse gas emissions at the fastest rate in history.This is increasing global temperatures and creating the need for planning to prevent unavoidable and unprecedented climate events from becoming disasters.
文摘With the help of governments at all levels,farmers and herdsmen in Tibet can now continually keep up with the progress of the times and social development through their own efforts.“Convenient facilities and relatively stable incomes are making our life increasingly promising,”enthused Yangjen Lhamo,who lives in Naxingtang Community,Nagqu City,Tibet Autonomous Region.She believes that her children’s life will be better.
文摘Former CEO of Heritage Malta recalls her first visit to China,which soon ushered in an array of cultural heritage conservation cooperation projects and exhibitions in the two countries.Awise and much respected professional congratulated me on my appointment as CEO of Heritage Malta in 2003.With her message of congratulations came also the passionate recommendation to visit China and to discover first-hand what China has to offer,possibly bringing some of that to the people and visitors of the Maltese Islands.That message stuck with me.Heritage Malta is the Maltese national agency for museums,conservation practice,and cultural heritage.Created by the Cultural Heritage Act,enacted in 2002,the National Agency replaced the former Museums Department.
文摘As the most time-tested and influential art festival in Slovenia,the Ljubljana Festival invites renowned artists and groups from across the globe to offer high-standard arts performances to audience in centuried venues,meanwhile creating an excellent opportunity for musicians,actors,playwrights and painters of different nationalities to present their piece de resistance.