The pressing environmental concerns and the depletion of fossil fuel reserves necessitate a transition toward sustainable energy sources.Ethanol,a renewable biomass-derived fuel,is a promising alternative due to its a...The pressing environmental concerns and the depletion of fossil fuel reserves necessitate a transition toward sustainable energy sources.Ethanol,a renewable biomass-derived fuel,is a promising alternative due to its availability and high energy density.This study investigates the synthesis of gold nanoparticles(Au NPs)via a square-wave pulse deposition technique,aiming to enhance catalytic activity for ethanol electrooxidation.By varying pulse durations,we were able to exert precise control over Au NP size and distribution without stabilizing agents.Characterization using field emission scanning electron microscopy and X-ray diffraction techniques confirmed the formation of clustered nanoparticles of metallic gold phase.Electrochemical characteristics analyses revealed that Au NPs synthesized with a 900 ms pulse duration exhibited the lowest charge transfer resistance and the highest electrochemically active surface area.The electrocatalytic performance test of these Au NPs demonstrated an anodic current density of 2.5 mA cm^-(2)and a Tafel slope of 78 mV dec^(-1),indicating superior catalytic performance and reaction kinetics.Additionally,the Au NPs showed high resistance to poisoning,as evidenced by a low j_(b)/j_(f)ratio of 0.28 and stable chronoamperometric response.These findings underscore the potential of this synthesis method for producing high-performance electrocatalysts utilized in exploiting ethanol's potential as an environmentally friendly energy carrier.展开更多
The Western fundamentalist view of human rights,in contrast to Chinese society and culture,is external,and thus provides"conceptual form," "thinking method" and "theoretical technique"but...The Western fundamentalist view of human rights,in contrast to Chinese society and culture,is external,and thus provides"conceptual form," "thinking method" and "theoretical technique"but not concrete content.In the traditional Chinese ideology,the time-honored group standard cannot be replaced by the individual standard.In New China,priority is given to the freedom and independence of "everyone" and the realization of rights and interests for"all".Contemporary China combines the human rights conception in Marxism with China’s concrete reality.Meanwhile,it integrates the socialist idea of equality with the traditional culture of the Chinese nation,creating a dual-guarantee system for universal values and individual rights.It gives a clear-cut expression to contemporary China’s rich traits of the cultural tradition of emphasizing progress for all and the equality for all,the priority of realizing the survival and development of the people,and the reference to the achievements of human rights civilizations of other countries.Human rights development in contemporary China must further consolidate the political conditions and institutional base for realizing the "public " goal of human rights and build a solid institutional guarantee for the "private" value orientation of human rights,by means of the construction of the whole-process people’s democracy.展开更多
At the No.1 Middle School in Namling County,Xizang Autonomous Region,located at an altitude of over 4,000 meters,students now access video teaching materials through the Xizang Education Zhufeng Qiyun platform.The pla...At the No.1 Middle School in Namling County,Xizang Autonomous Region,located at an altitude of over 4,000 meters,students now access video teaching materials through the Xizang Education Zhufeng Qiyun platform.The platform,and the computer-filled class-rooms students use to access it,are part of the region's ongoing efforts to digitalize educa-tion.With the rapid advancement of digital technology,the establishment of a“cloud classroom,”which brings together diverse on-line courses,narrows the educational resource gap between regions,and urban and rural areas.It also offers a model for improving educational equity around the world.展开更多
Cu_(2)O is a promising material for the hydrogen evolution reaction due to the favourable band gap.However,achieving a pure Cu_(2)O phase typically requires high deposition temperatures.To overcome this,electrolyte pH...Cu_(2)O is a promising material for the hydrogen evolution reaction due to the favourable band gap.However,achieving a pure Cu_(2)O phase typically requires high deposition temperatures.To overcome this,electrolyte pH modification was employed to synthesize pure Cu_(2)O at room temperature.A key challenge in room-temperature electrodeposition is the slow deposition rate,which can be improved through photoelectrodeposition.This study explores the synthesis of pure Cu_(2)O via controlled pH photoelectrodeposition for applications of the hydrogen evolution reaction.The results demonstrate that Cu_(2)O films were successfully deposited in an alkaline electrolyte,with the best hydrogen evolution reaction catalytic performance observed at pH 8.This sample exhibited a low onset potential of 64 mV with respect to the standard reversible hydrogen electrode and a Tafel slope of 46 mV/dec.These findings provide the optimization of Cu_(2)O synthesis for hydrogen production.展开更多
In September and October 2013,Chinese President Xi Jinping proposed the Silk Road Economic Belt and the 2lst-Century Maritime Silk Road.Together,they make up the Belt and Road Initiative(BRI),which aims to boost conne...In September and October 2013,Chinese President Xi Jinping proposed the Silk Road Economic Belt and the 2lst-Century Maritime Silk Road.Together,they make up the Belt and Road Initiative(BRI),which aims to boost connectivity along and beyond the ancient Silk Road routes.展开更多
The Chinese ethos has long held that"food is of primary importance to the people,"reflecting the nation's enduring focus on food security as a central strategic element.China's first food security la...The Chinese ethos has long held that"food is of primary importance to the people,"reflecting the nation's enduring focus on food security as a central strategic element.China's first food security law,which came into force on June 1,modernizes this principle.展开更多
Throughout humanity's advancement,space has evolved from an unattainable frontier into a vital pillar sustaining modem society.As a new domain of human endeavor,it now underpins critical global infrastructure-powe...Throughout humanity's advancement,space has evolved from an unattainable frontier into a vital pillar sustaining modem society.As a new domain of human endeavor,it now underpins critical global infrastructure-powering communications,enabling precision navigation and facilitating climate monitoring,making its security indispensable to both national interests and societal progress.展开更多
Recently,China's national security authorities revealed a major cyberat-tack launched by the U.S.National Security Agency(NSA)against the National Time Service Center at the Chinese Academy of Sciences.
With a flourishing global space industry,cooperation in space security and development has provided a pathway to global consensus and common effort with regard to outer space exploration and utilization.Over the past ...With a flourishing global space industry,cooperation in space security and development has provided a pathway to global consensus and common effort with regard to outer space exploration and utilization.Over the past decades,China has been deepening independent innovation in space technology,enhancing its comprehensive national strength.It has also engaged in space cooperation with other countries,extending the benefits of space exploration and utilization to more nations and regions,and exploring an important way to build a community with a shared future in space for humanity.展开更多
XinjiangUygurAutonomous Region is a vital gatewaytofurther connect China with the West.In recent years,the region has embraced a new phase of development,aligning with the country's broader development strategy.Xi...XinjiangUygurAutonomous Region is a vital gatewaytofurther connect China with the West.In recent years,the region has embraced a new phase of development,aligning with the country's broader development strategy.Xinjiang's focus has been on harmonizing economic growth with social stability and enhancing the quality of life for its residents.This approach prioritizes high-quality development,which highlights innovation,efficiency and sustainability,and underscores the importance of long-term initiatives aimed at ensuring lasting peace and security.展开更多
By sending seeds on short trips into space,China is developing new crop varieties,contributing to the advancement of agricultural science and bolstering food security.This process,known as space breeding,exposes seeds...By sending seeds on short trips into space,China is developing new crop varieties,contributing to the advancement of agricultural science and bolstering food security.This process,known as space breeding,exposes seeds to cosmic radiation,which mutates their genes and leads to the creation of new varieties with greater diversity.展开更多
基金supported by the National Research and Innovation Agency(BRIN)and Lembaga Pengelola Dana Pendidikan(LPDP)Ministry of Finance,Republic of Indonesia through Riset dan Inovasi Untuk Indonesia Maju(RIIM)scheme batch 2 with contract number 1/PG.02.00.PT/LPPM/IV/2024(110/IV/KS/11/2022).
文摘The pressing environmental concerns and the depletion of fossil fuel reserves necessitate a transition toward sustainable energy sources.Ethanol,a renewable biomass-derived fuel,is a promising alternative due to its availability and high energy density.This study investigates the synthesis of gold nanoparticles(Au NPs)via a square-wave pulse deposition technique,aiming to enhance catalytic activity for ethanol electrooxidation.By varying pulse durations,we were able to exert precise control over Au NP size and distribution without stabilizing agents.Characterization using field emission scanning electron microscopy and X-ray diffraction techniques confirmed the formation of clustered nanoparticles of metallic gold phase.Electrochemical characteristics analyses revealed that Au NPs synthesized with a 900 ms pulse duration exhibited the lowest charge transfer resistance and the highest electrochemically active surface area.The electrocatalytic performance test of these Au NPs demonstrated an anodic current density of 2.5 mA cm^-(2)and a Tafel slope of 78 mV dec^(-1),indicating superior catalytic performance and reaction kinetics.Additionally,the Au NPs showed high resistance to poisoning,as evidenced by a low j_(b)/j_(f)ratio of 0.28 and stable chronoamperometric response.These findings underscore the potential of this synthesis method for producing high-performance electrocatalysts utilized in exploiting ethanol's potential as an environmentally friendly energy carrier.
基金the initial result of a major project of the Beijing Research Center of Xi Jinping Thought on Socialism with Chinese Characteristics for a New Era and the Beijing Social Science Foundation.The name of the project is“Research on General Secretary Xi Jinping’s Important Discourse on Human Rights”(Project No.21LLFXA051)。
文摘The Western fundamentalist view of human rights,in contrast to Chinese society and culture,is external,and thus provides"conceptual form," "thinking method" and "theoretical technique"but not concrete content.In the traditional Chinese ideology,the time-honored group standard cannot be replaced by the individual standard.In New China,priority is given to the freedom and independence of "everyone" and the realization of rights and interests for"all".Contemporary China combines the human rights conception in Marxism with China’s concrete reality.Meanwhile,it integrates the socialist idea of equality with the traditional culture of the Chinese nation,creating a dual-guarantee system for universal values and individual rights.It gives a clear-cut expression to contemporary China’s rich traits of the cultural tradition of emphasizing progress for all and the equality for all,the priority of realizing the survival and development of the people,and the reference to the achievements of human rights civilizations of other countries.Human rights development in contemporary China must further consolidate the political conditions and institutional base for realizing the "public " goal of human rights and build a solid institutional guarantee for the "private" value orientation of human rights,by means of the construction of the whole-process people’s democracy.
文摘At the No.1 Middle School in Namling County,Xizang Autonomous Region,located at an altitude of over 4,000 meters,students now access video teaching materials through the Xizang Education Zhufeng Qiyun platform.The platform,and the computer-filled class-rooms students use to access it,are part of the region's ongoing efforts to digitalize educa-tion.With the rapid advancement of digital technology,the establishment of a“cloud classroom,”which brings together diverse on-line courses,narrows the educational resource gap between regions,and urban and rural areas.It also offers a model for improving educational equity around the world.
基金supported by the Direktorat Penelitian dan Pengabdian Kepada Masyarakat(DPPM),Kementrian Pendidikan Tinggi,Sains,dan Teknologi of the Republic of Indonesia(Grant No.3/UN39.14/C3/DT.05.00/PT-LP/PL/2025).
文摘Cu_(2)O is a promising material for the hydrogen evolution reaction due to the favourable band gap.However,achieving a pure Cu_(2)O phase typically requires high deposition temperatures.To overcome this,electrolyte pH modification was employed to synthesize pure Cu_(2)O at room temperature.A key challenge in room-temperature electrodeposition is the slow deposition rate,which can be improved through photoelectrodeposition.This study explores the synthesis of pure Cu_(2)O via controlled pH photoelectrodeposition for applications of the hydrogen evolution reaction.The results demonstrate that Cu_(2)O films were successfully deposited in an alkaline electrolyte,with the best hydrogen evolution reaction catalytic performance observed at pH 8.This sample exhibited a low onset potential of 64 mV with respect to the standard reversible hydrogen electrode and a Tafel slope of 46 mV/dec.These findings provide the optimization of Cu_(2)O synthesis for hydrogen production.
文摘In September and October 2013,Chinese President Xi Jinping proposed the Silk Road Economic Belt and the 2lst-Century Maritime Silk Road.Together,they make up the Belt and Road Initiative(BRI),which aims to boost connectivity along and beyond the ancient Silk Road routes.
文摘The Chinese ethos has long held that"food is of primary importance to the people,"reflecting the nation's enduring focus on food security as a central strategic element.China's first food security law,which came into force on June 1,modernizes this principle.
文摘Throughout humanity's advancement,space has evolved from an unattainable frontier into a vital pillar sustaining modem society.As a new domain of human endeavor,it now underpins critical global infrastructure-powering communications,enabling precision navigation and facilitating climate monitoring,making its security indispensable to both national interests and societal progress.
文摘Recently,China's national security authorities revealed a major cyberat-tack launched by the U.S.National Security Agency(NSA)against the National Time Service Center at the Chinese Academy of Sciences.
文摘With a flourishing global space industry,cooperation in space security and development has provided a pathway to global consensus and common effort with regard to outer space exploration and utilization.Over the past decades,China has been deepening independent innovation in space technology,enhancing its comprehensive national strength.It has also engaged in space cooperation with other countries,extending the benefits of space exploration and utilization to more nations and regions,and exploring an important way to build a community with a shared future in space for humanity.
文摘XinjiangUygurAutonomous Region is a vital gatewaytofurther connect China with the West.In recent years,the region has embraced a new phase of development,aligning with the country's broader development strategy.Xinjiang's focus has been on harmonizing economic growth with social stability and enhancing the quality of life for its residents.This approach prioritizes high-quality development,which highlights innovation,efficiency and sustainability,and underscores the importance of long-term initiatives aimed at ensuring lasting peace and security.
文摘By sending seeds on short trips into space,China is developing new crop varieties,contributing to the advancement of agricultural science and bolstering food security.This process,known as space breeding,exposes seeds to cosmic radiation,which mutates their genes and leads to the creation of new varieties with greater diversity.
