As CO2 is injected into pore spaces of water-filled reservoir rocks, it displaces much of the pore fluids. In short terms (several to tens of years), the greater part of the injected CO2 is predicted to stay as free C...As CO2 is injected into pore spaces of water-filled reservoir rocks, it displaces much of the pore fluids. In short terms (several to tens of years), the greater part of the injected CO2 is predicted to stay as free CO2 , i.e. in a CO2 rich dense phase that may contain some water. This paper investigates the sorption characteristics for rocks (quartzose arenite, greywacke, shale, granite and serpentine) and minerals (quartz and albite) in the CO2 rich dense phase. The measurements were conducted at 50°C and 100°C, and pressures up to 20 MPa. Our results demonstrated that significant quantities of CO2 were sorbed with all the samples. Particularly, at 50°C and 100°C, quartzose arenite showed largest sorption capacity among the other samples in higher pressures (>10 MPa). Furthermore, comparison with model prediction based on the pore filling model, which assumed that CO2 acts as filling pore spaces of the rocks and minerals, suggested the importance of the sorption mechanism in the CO2 geological storage in addition to the pore-filling mechanism. The present results should be pointed out that the sorption characteristics may have significant and meaningful effect on the assessment of CO2 storage capacity in geological media.展开更多
Solar cell is an effective apparatus which can transform solar energy into electrical energy. However, the main problem is the low density and discontinuity of solar energy at present. The solar cell with a layer of r...Solar cell is an effective apparatus which can transform solar energy into electrical energy. However, the main problem is the low density and discontinuity of solar energy at present. The solar cell with a layer of rare earth film can absorb incidence sunlight and enhance the energy density of solar energy. The rare earth film can absorb solar energy and bear high temperature of 300～450 ℃. Moreover, in rainy days or at night, the film radiates the solar energy it stored in 8～12 h, so that the solar cell can work continuously, which remarkably enhanced the efficiency of solar cell.展开更多
Digital broadcasting is a novel paradigm for the next generation broadcasting. Its goal is to provide not only better quality of pictures but also a variety of services that is impossible in traditional airwaves broad...Digital broadcasting is a novel paradigm for the next generation broadcasting. Its goal is to provide not only better quality of pictures but also a variety of services that is impossible in traditional airwaves broadcasting. One of the important factors for this new broadcasting environment is the interoperability among broadcasting applications since the environment is distributed. Therefore the broadcasting metadata becomes increasingly important and one of the metadata standards for a digital broadcasting is TV-Anytime metadata. TV-Anytime metadata is defined using XML schema, so its instances are XML data. In order to fulfill interoperability, a standard query language is also required and XQuery is a natural choice. There are some researches for dealing with broadcasting metadata. In our previous study, we have proposed the method for efficiently managing the broadcasting metadata in a service provider. However, the environment of a Set-Top Box for digital broadcasting is limited such as low-cost and low-setting. Therefore there are some considerations to apply general approaches for managing the metadata into the Set-Top Box. This paper proposes a method for efficiently managing the broadcasting metadata based on the Set-Top Box and a prototype of metadata management system for evaluating our method. Our system consists of a storage engine to store the metadata and an XQuery engine to search the stored metadata and uses special index for storing and searching. Our two engines are designed independently with hardware platform therefore these engines can be used in any low-cost applications to manage broadcasting metadata.展开更多
The key-value store can provide flexibility of data types because it does not need to specify the data types to be stored in advance and can store any types of data as the value of the key-value pair.Various types of ...The key-value store can provide flexibility of data types because it does not need to specify the data types to be stored in advance and can store any types of data as the value of the key-value pair.Various types of studies have been conducted to improve the performance of the key-value store while maintaining its flexibility.However,the research efforts storing the large-scale values such as multimedia data files(e.g.,images or videos)in the key-value store were limited.In this study,we propose a new key-value store,WR-Store++aiming to store the large-scale values stably.Specifically,it provides a new design of separating data and index by working with the built-in data structure of the Windows operating system and the file system.The utilization of the built-in data structure of the Windows operating system achieves the efficiency of the key-value store and that of the file system extends the limited space of the storage significantly.We also present chunk-based memory management and parallel processing of WR-Store++to further improve its performance in the GET operation.Through the experiments,we show that WR-Store++can store at least 32.74 times larger datasets than the existing baseline key-value store,WR-Store,which has the limitation in storing large-scale data sets.Furthermore,in terms of processing efficiency,we show that WR-Store++outperforms not only WR-Store but also the other state-ofthe-art key-value stores,LevelDB,RocksDB,and BerkeleyDB,for individual key-value operations and mixed workloads.展开更多
Understanding the proton dynamic behavior in inorganic materials has long been a topic of intense fascination[1],especially in the field of electrochemical energy storage[2].One of the examples is the research of prot...Understanding the proton dynamic behavior in inorganic materials has long been a topic of intense fascination[1],especially in the field of electrochemical energy storage[2].One of the examples is the research of proton transport in transition metal oxides,which dates back to 1971[3]when RuO_(2) was discovered to be capable of storing protons via reversible redox reactions[4].In aqueous electrolytes,the thin film RuO_(2) electrode exhibits a surface pseudocapacitive behavior[5],which could be modified by the structural water in its hydrated form due to the facile Grotthuss hopping mode of protons along the established hydrogen bonds inside the bulk phase[6].Soon later,Goodenough et al.reported the capacitor-like behavior of amorphous MnO_(2)·xH_(2)O electrode in an aqueous KCl electrolyte[7],and further studies on the hydrated MnO_(2) electrodes prepared by sol-gel processes have soon discovered that the intercalation of protons from aqueous electrolytes plays an indispensable role in the charge storage mechanism[8].In recent years,the research interest on rechargeable aqueous batteries has fueled the renaissance of mechanistic study of proton transport in transition metal oxides[9],which can operate as cathodes or anodes via a topotactic insertion mechanism similar to that in Li-ion batteries[10].However,due to the challenges for experimental detection of local chemical environments of the inserted protons,a comprehensive understanding of proton dynamic behavior in these electrodes remains largely lacking.展开更多
Compounds containing nitrogen stored in bark play a significant role in the growth of trees, especially of deciduous trees. Many physiological and biochemical studies have been made in regard to the composition accumu...Compounds containing nitrogen stored in bark play a significant role in the growth of trees, especially of deciduous trees. Many physiological and biochemical studies have been made in regard to the composition accumulation and mobilization of the nitrogen compounds in bark, but report on the cytological aspect has scarcely been seen. This brief report deals with the protein-storing cells we found in the secondary phloem of Hevea brasiliensis stem.展开更多
Dear Editor,In the＂big data era＂,the amount of digital information is growing explosively,therefore,a reliable data storage medium for large-scale digital archiving is urgently needed.However,the increase of existin...Dear Editor,In the＂big data era＂,the amount of digital information is growing explosively,therefore,a reliable data storage medium for large-scale digital archiving is urgently needed.However,the increase of existing storage capacity cannot keep up with the growth of digital information.Moreover,the durability of conventional storage teclanologles, sucn as magnetic and optical devices, is very limited. Since the first demonstration of using DNA to store messages in 1988, DNA has been considered as a promising data storage medium due to its high-density and long-term stability （half-life〉500years） （Allentoft et al., 2012）.展开更多
The hydrogen storing material LaFeNi4 has been studied extensively. We also obtained some nice results using different activation techniques and did some Mssbauer effect measurements on the material. Though a Ni sourc...The hydrogen storing material LaFeNi4 has been studied extensively. We also obtained some nice results using different activation techniques and did some Mssbauer effect measurements on the material. Though a Ni source was used in展开更多
A simple all optical system for stopping and storing light pulses is demonstrated. The system consists of an erbium-doped fiber amplifier （EDFA）, a semiconductor optical amplifier （SOA）, and a fiber ring resonator...A simple all optical system for stopping and storing light pulses is demonstrated. The system consists of an erbium-doped fiber amplifier （EDFA）, a semiconductor optical amplifier （SOA）, and a fiber ring resonator. The results show that the multisoliton generation with a free spectrum range of 2.4 nm and a pulse spectral width of 0.96 nm is achieved. The memory time of 15 min and the maximum soliton output power of 5.94 dBm are noted, respectively. This means that light pulses can be trapped, i.e., stopped optically within the fiber ring resonator.展开更多
Conversation A(in a department store)Sara:Department store directories are helpful.Sam:They are.Today,I have to buy new furniture and bedding for my apartment.They're on the sixth floor.
一、单词拼写1.Light travels much faster than___(声音).2.It's______(容易的)for us to pay online with Alipay now,3.The teacher often____(测试)his students in math.4.At that time,things could be_____(困难的)for the w...一、单词拼写1.Light travels much faster than___(声音).2.It's______(容易的)for us to pay online with Alipay now,3.The teacher often____(测试)his students in math.4.At that time,things could be_____(困难的)for the workers.5.It's said that she's__(储备)nearly one ton of potatoes at home.6.In his spare time,Dr.Yuan loves playing the piano and listening to__(音乐),especially Mozart's.展开更多
Train Mass Rapid Transit(MRT)was put into service in 1987,and has since been augmented by and linked to the Light Rapid Transit.Combined,you can often get you within walking distance of most destinations.The maps on t...Train Mass Rapid Transit(MRT)was put into service in 1987,and has since been augmented by and linked to the Light Rapid Transit.Combined,you can often get you within walking distance of most destinations.The maps on the metro system are easy to read,complete with English version.You can easily purchase an EZ-Link card or a NETS Flashpay Card(stored value cards)at all MRT stations and bus interchange.展开更多
简单的善举不仅温暖了他人,也让施助者感受到内心的充盈与喜悦,既彰显出爱的力量,更传递出分享的真谛。1 I have no idea why some stores make shelves so high that only a professional basketball player can reach them,but they d...简单的善举不仅温暖了他人,也让施助者感受到内心的充盈与喜悦,既彰显出爱的力量,更传递出分享的真谛。1 I have no idea why some stores make shelves so high that only a professional basketball player can reach them,but they do.I experienced one of them just the other day.I had just picked up some toothpaste and deodorant and was heading to the dog food section when I took a short cut through the toy section.展开更多
Boosting Tourism and Consumption.China plans to accelerate the availability of tax refund stores for eligible overseas visitors to about 10,000 shops nationwide this year,almost tripling the current number,as the coun...Boosting Tourism and Consumption.China plans to accelerate the availability of tax refund stores for eligible overseas visitors to about 10,000 shops nationwide this year,almost tripling the current number,as the country continues to boost inbound tourism and consumption,a senior official said.展开更多
In recent years, Chinese game developers have been quietly pulling off a “gold rush” in the global m a rket. Of c ou r se, eve r yone knows about mega-hits like “Genshin Impact” and “Black Myth:Wukong”,but what ...In recent years, Chinese game developers have been quietly pulling off a “gold rush” in the global m a rket. Of c ou r se, eve r yone knows about mega-hits like “Genshin Impact” and “Black Myth:Wukong”,but what about all those lesser-known Chinese games quietly taking over app stores worldwide? These games are raking in the dough, using localization that is so good that Western players are too excited to realize the game they’re obsessed with is from China. Let’s talk numbers:in 2024, Chinese-developed games made a whopping USD 18.557 billion overseas, up 13.39%from the year before.展开更多
Phillip Katuve,a landlord who owns a six-storey apartment complex in Kileleshwa,an upmarket Nairobi suburb,embraced green roofing two years ago.His building now boasts a vibrant rooftop garden with integrated solar pa...Phillip Katuve,a landlord who owns a six-storey apartment complex in Kileleshwa,an upmarket Nairobi suburb,embraced green roofing two years ago.His building now boasts a vibrant rooftop garden with integrated solar panels,supplying energy to all 24 units.“Initially,the idea sounded expensive,but the long-term benefits have been remarkable,”said Katuve.展开更多
LATEST NEWS FROM THE WORLD OF BUSINESS CHINA Beijing to Open‘4S’Store for Robots China’s capital is set to launch the world’s first“4S store”dedicated to embodied artificial intelligence robots,marking the lates...LATEST NEWS FROM THE WORLD OF BUSINESS CHINA Beijing to Open‘4S’Store for Robots China’s capital is set to launch the world’s first“4S store”dedicated to embodied artificial intelligence robots,marking the latest push to commer-cialise advanced robotics in the country.展开更多
The Chinese New Year gives a boost to“debut economy,”which has already become a driver of upgraded consumption and a higher lifestyle.XIAONIAN,or the Chinese Little New Year,is the day when preparations for the Spri...The Chinese New Year gives a boost to“debut economy,”which has already become a driver of upgraded consumption and a higher lifestyle.XIAONIAN,or the Chinese Little New Year,is the day when preparations for the Spring Festival start a week before the actual Chinese New Year.The following day on January 24,2025,Chaoyang District in Beijing saw the capital’s first MINISO LAND open,a two-storied store full of items loved by young people-plush toys,trinkets,cosmetics,badges,and internationally popular merchandise like Hello Kitty,Little Pony,and Harry Potter branded goods.展开更多
An eco-friendly label makes cultural products from recycled bottles and industrial waste to nudge young people towards a green lifestyle.IN a gift store in China’s iconic Palace Museum,also known as the Forbidden Cit...An eco-friendly label makes cultural products from recycled bottles and industrial waste to nudge young people towards a green lifestyle.IN a gift store in China’s iconic Palace Museum,also known as the Forbidden City,sustainable cultural and creative products made from recycled materials are a hit with visitors.展开更多
文摘As CO2 is injected into pore spaces of water-filled reservoir rocks, it displaces much of the pore fluids. In short terms (several to tens of years), the greater part of the injected CO2 is predicted to stay as free CO2 , i.e. in a CO2 rich dense phase that may contain some water. This paper investigates the sorption characteristics for rocks (quartzose arenite, greywacke, shale, granite and serpentine) and minerals (quartz and albite) in the CO2 rich dense phase. The measurements were conducted at 50°C and 100°C, and pressures up to 20 MPa. Our results demonstrated that significant quantities of CO2 were sorbed with all the samples. Particularly, at 50°C and 100°C, quartzose arenite showed largest sorption capacity among the other samples in higher pressures (>10 MPa). Furthermore, comparison with model prediction based on the pore filling model, which assumed that CO2 acts as filling pore spaces of the rocks and minerals, suggested the importance of the sorption mechanism in the CO2 geological storage in addition to the pore-filling mechanism. The present results should be pointed out that the sorption characteristics may have significant and meaningful effect on the assessment of CO2 storage capacity in geological media.
文摘Solar cell is an effective apparatus which can transform solar energy into electrical energy. However, the main problem is the low density and discontinuity of solar energy at present. The solar cell with a layer of rare earth film can absorb incidence sunlight and enhance the energy density of solar energy. The rare earth film can absorb solar energy and bear high temperature of 300～450 ℃. Moreover, in rainy days or at night, the film radiates the solar energy it stored in 8～12 h, so that the solar cell can work continuously, which remarkably enhanced the efficiency of solar cell.
文摘Digital broadcasting is a novel paradigm for the next generation broadcasting. Its goal is to provide not only better quality of pictures but also a variety of services that is impossible in traditional airwaves broadcasting. One of the important factors for this new broadcasting environment is the interoperability among broadcasting applications since the environment is distributed. Therefore the broadcasting metadata becomes increasingly important and one of the metadata standards for a digital broadcasting is TV-Anytime metadata. TV-Anytime metadata is defined using XML schema, so its instances are XML data. In order to fulfill interoperability, a standard query language is also required and XQuery is a natural choice. There are some researches for dealing with broadcasting metadata. In our previous study, we have proposed the method for efficiently managing the broadcasting metadata in a service provider. However, the environment of a Set-Top Box for digital broadcasting is limited such as low-cost and low-setting. Therefore there are some considerations to apply general approaches for managing the metadata into the Set-Top Box. This paper proposes a method for efficiently managing the broadcasting metadata based on the Set-Top Box and a prototype of metadata management system for evaluating our method. Our system consists of a storage engine to store the metadata and an XQuery engine to search the stored metadata and uses special index for storing and searching. Our two engines are designed independently with hardware platform therefore these engines can be used in any low-cost applications to manage broadcasting metadata.
文摘The key-value store can provide flexibility of data types because it does not need to specify the data types to be stored in advance and can store any types of data as the value of the key-value pair.Various types of studies have been conducted to improve the performance of the key-value store while maintaining its flexibility.However,the research efforts storing the large-scale values such as multimedia data files(e.g.,images or videos)in the key-value store were limited.In this study,we propose a new key-value store,WR-Store++aiming to store the large-scale values stably.Specifically,it provides a new design of separating data and index by working with the built-in data structure of the Windows operating system and the file system.The utilization of the built-in data structure of the Windows operating system achieves the efficiency of the key-value store and that of the file system extends the limited space of the storage significantly.We also present chunk-based memory management and parallel processing of WR-Store++to further improve its performance in the GET operation.Through the experiments,we show that WR-Store++can store at least 32.74 times larger datasets than the existing baseline key-value store,WR-Store,which has the limitation in storing large-scale data sets.Furthermore,in terms of processing efficiency,we show that WR-Store++outperforms not only WR-Store but also the other state-ofthe-art key-value stores,LevelDB,RocksDB,and BerkeleyDB,for individual key-value operations and mixed workloads.
基金financial support from the National Natural Science Foundation of China(22109003)the Basic and Applied Basic Research Foundation of Guangdong Province(2023A1515011391)+1 种基金Soft Science Research Project of Guangdong Province(No.2017B030301013)the Major Science and Technology Infrastructure Project of Material Genome Big-science Facilities Platform supported by Municipal Development and Reform Commission of Shenzhen.
文摘Understanding the proton dynamic behavior in inorganic materials has long been a topic of intense fascination[1],especially in the field of electrochemical energy storage[2].One of the examples is the research of proton transport in transition metal oxides,which dates back to 1971[3]when RuO_(2) was discovered to be capable of storing protons via reversible redox reactions[4].In aqueous electrolytes,the thin film RuO_(2) electrode exhibits a surface pseudocapacitive behavior[5],which could be modified by the structural water in its hydrated form due to the facile Grotthuss hopping mode of protons along the established hydrogen bonds inside the bulk phase[6].Soon later,Goodenough et al.reported the capacitor-like behavior of amorphous MnO_(2)·xH_(2)O electrode in an aqueous KCl electrolyte[7],and further studies on the hydrated MnO_(2) electrodes prepared by sol-gel processes have soon discovered that the intercalation of protons from aqueous electrolytes plays an indispensable role in the charge storage mechanism[8].In recent years,the research interest on rechargeable aqueous batteries has fueled the renaissance of mechanistic study of proton transport in transition metal oxides[9],which can operate as cathodes or anodes via a topotactic insertion mechanism similar to that in Li-ion batteries[10].However,due to the challenges for experimental detection of local chemical environments of the inserted protons,a comprehensive understanding of proton dynamic behavior in these electrodes remains largely lacking.
文摘Compounds containing nitrogen stored in bark play a significant role in the growth of trees, especially of deciduous trees. Many physiological and biochemical studies have been made in regard to the composition accumulation and mobilization of the nitrogen compounds in bark, but report on the cytological aspect has scarcely been seen. This brief report deals with the protein-storing cells we found in the secondary phloem of Hevea brasiliensis stem.
基金supported by the Suzhou Science and Technology Project and Fund for Young Scientists of Science and Technology Program of Jiangsu
文摘Dear Editor,In the＂big data era＂,the amount of digital information is growing explosively,therefore,a reliable data storage medium for large-scale digital archiving is urgently needed.However,the increase of existing storage capacity cannot keep up with the growth of digital information.Moreover,the durability of conventional storage teclanologles, sucn as magnetic and optical devices, is very limited. Since the first demonstration of using DNA to store messages in 1988, DNA has been considered as a promising data storage medium due to its high-density and long-term stability （half-life〉500years） （Allentoft et al., 2012）.
文摘The hydrogen storing material LaFeNi4 has been studied extensively. We also obtained some nice results using different activation techniques and did some Mssbauer effect measurements on the material. Though a Ni source was used in
文摘A simple all optical system for stopping and storing light pulses is demonstrated. The system consists of an erbium-doped fiber amplifier （EDFA）, a semiconductor optical amplifier （SOA）, and a fiber ring resonator. The results show that the multisoliton generation with a free spectrum range of 2.4 nm and a pulse spectral width of 0.96 nm is achieved. The memory time of 15 min and the maximum soliton output power of 5.94 dBm are noted, respectively. This means that light pulses can be trapped, i.e., stopped optically within the fiber ring resonator.
文摘Conversation A(in a department store)Sara:Department store directories are helpful.Sam:They are.Today,I have to buy new furniture and bedding for my apartment.They're on the sixth floor.
文摘一、单词拼写1.Light travels much faster than___(声音).2.It's______(容易的)for us to pay online with Alipay now,3.The teacher often____(测试)his students in math.4.At that time,things could be_____(困难的)for the workers.5.It's said that she's__(储备)nearly one ton of potatoes at home.6.In his spare time,Dr.Yuan loves playing the piano and listening to__(音乐),especially Mozart's.
文摘Train Mass Rapid Transit(MRT)was put into service in 1987,and has since been augmented by and linked to the Light Rapid Transit.Combined,you can often get you within walking distance of most destinations.The maps on the metro system are easy to read,complete with English version.You can easily purchase an EZ-Link card or a NETS Flashpay Card(stored value cards)at all MRT stations and bus interchange.
文摘简单的善举不仅温暖了他人,也让施助者感受到内心的充盈与喜悦,既彰显出爱的力量,更传递出分享的真谛。1 I have no idea why some stores make shelves so high that only a professional basketball player can reach them,but they do.I experienced one of them just the other day.I had just picked up some toothpaste and deodorant and was heading to the dog food section when I took a short cut through the toy section.
文摘Boosting Tourism and Consumption.China plans to accelerate the availability of tax refund stores for eligible overseas visitors to about 10,000 shops nationwide this year,almost tripling the current number,as the country continues to boost inbound tourism and consumption,a senior official said.
文摘In recent years, Chinese game developers have been quietly pulling off a “gold rush” in the global m a rket. Of c ou r se, eve r yone knows about mega-hits like “Genshin Impact” and “Black Myth:Wukong”,but what about all those lesser-known Chinese games quietly taking over app stores worldwide? These games are raking in the dough, using localization that is so good that Western players are too excited to realize the game they’re obsessed with is from China. Let’s talk numbers:in 2024, Chinese-developed games made a whopping USD 18.557 billion overseas, up 13.39%from the year before.
文摘Phillip Katuve,a landlord who owns a six-storey apartment complex in Kileleshwa,an upmarket Nairobi suburb,embraced green roofing two years ago.His building now boasts a vibrant rooftop garden with integrated solar panels,supplying energy to all 24 units.“Initially,the idea sounded expensive,but the long-term benefits have been remarkable,”said Katuve.
文摘LATEST NEWS FROM THE WORLD OF BUSINESS CHINA Beijing to Open‘4S’Store for Robots China’s capital is set to launch the world’s first“4S store”dedicated to embodied artificial intelligence robots,marking the latest push to commer-cialise advanced robotics in the country.
文摘The Chinese New Year gives a boost to“debut economy,”which has already become a driver of upgraded consumption and a higher lifestyle.XIAONIAN,or the Chinese Little New Year,is the day when preparations for the Spring Festival start a week before the actual Chinese New Year.The following day on January 24,2025,Chaoyang District in Beijing saw the capital’s first MINISO LAND open,a two-storied store full of items loved by young people-plush toys,trinkets,cosmetics,badges,and internationally popular merchandise like Hello Kitty,Little Pony,and Harry Potter branded goods.
文摘An eco-friendly label makes cultural products from recycled bottles and industrial waste to nudge young people towards a green lifestyle.IN a gift store in China’s iconic Palace Museum,also known as the Forbidden City,sustainable cultural and creative products made from recycled materials are a hit with visitors.
