With summer in full swing,it’s time to fire up the grill.About 80%of American households own a grill,according to a 2013 study by the Hearth,Patio&Barbecue Association.The survey also found that those folks love ...With summer in full swing,it’s time to fire up the grill.About 80%of American households own a grill,according to a 2013 study by the Hearth,Patio&Barbecue Association.The survey also found that those folks love grilling because cooking outdoors feels satisfactory,and the food'tastes so good.'But if you think grills are exclusively reserved for chicken wings and baby back ribs,you’re wrong.Add some of these foods to your next barbecue’s menu and get ready to become a bona fide grill master.展开更多
Egypt takes a liking to Chinese food For those who think Peking(former name of Beijing)is in China,coming to Egypt would be an eye-opener.There’s a Peking in the upmarket Mohandeseen District of Giza,the city that ha...Egypt takes a liking to Chinese food For those who think Peking(former name of Beijing)is in China,coming to Egypt would be an eye-opener.There’s a Peking in the upmarket Mohandeseen District of Giza,the city that harbors some of the greatest pyramids of Egypt;a second one in the Zamalek District of Greater Cairo frequented by expats,another one in Heliopolis and seven more.展开更多
THE name Zhen Huan has once again become a household name across China, On August 18, 2017, the author of the popular novel featuring Zhen＇s life in the imperial court in the Qing Dynasty （1644-1911）, now also a hi...THE name Zhen Huan has once again become a household name across China, On August 18, 2017, the author of the popular novel featuring Zhen＇s life in the imperial court in the Qing Dynasty （1644-1911）, now also a hit TV series, filed the first case tried by the first online court, Hangzhou Court of the Internet, in China - and the world,展开更多
Three years should be long enough to adapt to any situation,or so I thought.huffs of saying"yes,I can pick up food using chopsticks and not break out into an impromptu drum solo in the process"I sometimes ge...Three years should be long enough to adapt to any situation,or so I thought.huffs of saying"yes,I can pick up food using chopsticks and not break out into an impromptu drum solo in the process"I sometimes get a bit lost for words when trying to exclaim that I don’t展开更多
African countries can learn a lot from China in their quest for modernisation,For China,modernisation is a journey of hardship and perseverance.In modern times,the Chinese people tried to adopt modernisation formulas ...African countries can learn a lot from China in their quest for modernisation,For China,modernisation is a journey of hardship and perseverance.In modern times,the Chinese people tried to adopt modernisation formulas from the West,but none worked.Through its own efforts,China has modernised under the leadership of the Communist Party of China.It has transformed from an impoverished and backward nation into the world’s second-largest economy,the largest trader in goods,and the largest exporter.展开更多
The world is currently facing a highly contagious and fatal pandemic caused by SARS-CoV-2,which is also the first pandemic caused by a coronavirus yet.As of 25 August 2020,the number of confirmed COVID-19 patients has...The world is currently facing a highly contagious and fatal pandemic caused by SARS-CoV-2,which is also the first pandemic caused by a coronavirus yet.As of 25 August 2020,the number of confirmed COVID-19 patients has exceeded 23,518,343 worldwide,with a death toll of over 810,492.1 To date,the greatest challenge we face is the incomplete knowledge of both SARS-CoV-2 and COVID-19,resulting in a lack of effective drugs and adequate treatment strategies.Despite various treatment options for critical COVID-19 patients,including extracorporeal membrane oxygenation,ventilation,tracheal intubation,circulatory support,and non-specific antiviral drugs,clinical outcomes are unsatisfactory.2 In particular,some mild or common COVID-19 patients experience sudden and rapid deterioration with the onset of fatal cytokine storm syndrome which cannot be treated by any conventional therapies.Therefore,from 2 February 2020 to 4 March 2020,the China National Health Commission has issued successively the 1st–7th editions of the Official Guidance of Diagnosis and Management for COVID-19 and formulated preliminary guidelines for the clinical application of convalescent plasma therapy(CPT)for critical COVID-19 patients.展开更多
Fixed samples are introduced in the quantum Monte Carlo method to reduce square devia-tions so as to convergently optimize the parameters of tried wave functions. The tried wavefunctions attained in this way have been...Fixed samples are introduced in the quantum Monte Carlo method to reduce square devia-tions so as to convergently optimize the parameters of tried wave functions. The tried wavefunctions attained in this way have been used to calculate energies of H_2, Li_2 and H_2O mole-cules. The results are satisfactory.展开更多
Aqueous zinc-ion batteries(AZIBs)have developed rapidly in recent years but still face several challenges,including zinc dendrites growth,hydrogen evolution reaction,passivation and corrosion.The pH of the electrolyte...Aqueous zinc-ion batteries(AZIBs)have developed rapidly in recent years but still face several challenges,including zinc dendrites growth,hydrogen evolution reaction,passivation and corrosion.The pH of the electrolyte plays a crucial role in these processes,significantly impacting the stability and reversibility of Zn^(2+)deposition.Therefore,pH-buffer tris(hydroxymethyl)amino methane(tris)is chosen as a versatile electrolyte additive to address these issues.Tris can buffer electrolyte pH at Zn/electrolyte interface by protonated/deprotonated nature of amino group,optimize the coordination environment of zinc solvate ions by its strong interaction with zinc ions,and simultaneously create an in-situ stable solid electrolyte interface membrane on the zinc anode surface.These synergistic effects effectively restrain dendrite formation and side reactions,resulting in a highly stable and reversible Zn anode,thereby enhancing the electrochemical performance of AZIBs.The Zn||Zn battery with 0.15 wt%tris additives maintains stable cycling for 1500 h at 4 mA·cm^(−2) and 1120 h at 10 mA·cm^(−2).Furthermore,the Coulombic efficiency reaches~99.2%at 4 mA·cm^(−2)@1 mAh·cm^(−2).The Zn||NVO full batteries also demonstrated a stable specific capacity and exceptional capacity retention.展开更多
Person Image Synthesis has been widely used in fashion with extensive application scenarios.The point of this task is how to synthesise person image from a single source image under arbitrary poses.Prior methods gener...Person Image Synthesis has been widely used in fashion with extensive application scenarios.The point of this task is how to synthesise person image from a single source image under arbitrary poses.Prior methods generate the person image with target pose well;however,they fail to preserve the fine style details of the source image.To address this problem,a robust style injection(RSI)model is proposed,which is a coarse-to-fine framework to synthesise target the person image.RSI develops a simple and efficient cross-attention based module to fuse the features of both source semantic styles and target pose for achieving the coarse aligned features.The adaptive instance normalisation is employed to enhance the aligned features in conjunction with source semantic styles.Subsequently,source semantic styles are further injected into the positional normalisation scheme to avoid the fine style details erosion caused by massive convolution.In training losses,optimal transport theory in the form of energy distance is introduced to constrain data distribution to refine the texture style details.Additionally,the authors’model is capable of editing the shape and texture of garments to the target style separately.The experiments demonstrate that the authors’RSI achieves better performance over the state-of-art methods.展开更多
Photoinduced molecular oxygen activation is crucial for artificial photosynthesis.However,metal-free semiconductor photocatalysts with high activation efficiency are still lacking up to now.Herein,two isomorphic tris(...Photoinduced molecular oxygen activation is crucial for artificial photosynthesis.However,metal-free semiconductor photocatalysts with high activation efficiency are still lacking up to now.Herein,two isomorphic tris(triazolo)triazine-based covalent organic frameworks were successfully constructed under solvothermal conditions.And they possess high crystallinity,inherent porosity with large surface area and good stability.Strong electron donor-acceptor skeletons expand the visible light harvesting,also facilitate the charge separation and thus lead to their superior activity of photoinduced molecular oxygen activation including photosynthesis of tetrahydroquinolines and hydrogen peroxide.This work provides a way to improve the efficiency of molecular oxygen activation through the rational design of COFs,and also opens new avenues for the construction of highly active and metal-free photocatalysts toward sustainable solar-to-chemical energy conversion.展开更多
As a potential candidate for high-energy lithium-ion batteries (LIBs),nickel-rich cathodes encounter significant challenges due to structural instability arising from interphases.In this work,tris(ethenyl)-tris(etheny...As a potential candidate for high-energy lithium-ion batteries (LIBs),nickel-rich cathodes encounter significant challenges due to structural instability arising from interphases.In this work,tris(ethenyl)-tris(ethenyl)silyloxysilane (HVDS) with Si–O bonds and unsaturated bonds is introduced as additive designing functional electrolyte to enhance the long-cycle stability of LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)/graphite LIBs at elevated temperature.The preferential oxidization and component of HVDS facilitate the generation of an extremely robust and ultra-thin cathode electrolyte interphase (CEI) comprising a chemically bonded silane polymer.This interphase effectively suppresses side-reactions of electrolyte,mitigates HF erosion,and reduces irreversible phase transitions.Benefiting from the above merits,the batteries’capacity retention shows a remarkable increase from 20% to 92% after nearly 1550 cycles conducted at room temperature.And under elevated temperature conditions (45℃),the capacity retention remains 80%after 670 cycles,in comparison to a drop to 80%after only 250 cycles with the blank electrolyte.These findings highlight HVDS’s potential to functionalize the electrolyte,marking a breakthrough in improving the longevity and reliability of NCM811/graphite LIBs under challenging conditions.展开更多
重点词汇1.weak adj.虚弱的;无力的He was too weak even to lift his hand.他虚弱得连手都抬不起来。短语be weak in不擅长……;在……方面不行He is weak in sight and hearing.他的视力和听力都很差。2.remind v.提醒;使想起(1)remin...重点词汇1.weak adj.虚弱的;无力的He was too weak even to lift his hand.他虚弱得连手都抬不起来。短语be weak in不擅长……;在……方面不行He is weak in sight and hearing.他的视力和听力都很差。2.remind v.提醒;使想起(1)remind sb to do sth提醒某人做某事He reminded me to write the letter.他提醒我写信。(2)remind sb of sth使某人想起某事She reminded him of the last time they had met.她让他想起他们上次的相遇。(3)remind sb+that从句提醒某人……展开更多
You see them on every street-Shanghai's plethora of convenience stores:Family Mart,Kedi,7 Eleven and Lawson's.They are the real kings of convenience,supplying to the city's most carnal needs:hot food,drink...You see them on every street-Shanghai's plethora of convenience stores:Family Mart,Kedi,7 Eleven and Lawson's.They are the real kings of convenience,supplying to the city's most carnal needs:hot food,drinks,cheap alcohol,and uh,sex toys/condoms.Pride of place at front of store are steel tubs flled with murky looking Soup and miscellaneous items on skewers,guan dong zhu[关东煮,derived from Japanese oden].Immensely popular with locals,they are often unfathomable to outsiders.But maybe we're missing out on something totally delicious?We sampled the lot of them,and here's the lowdown on the best of the bunch.展开更多
文摘With summer in full swing,it’s time to fire up the grill.About 80%of American households own a grill,according to a 2013 study by the Hearth,Patio&Barbecue Association.The survey also found that those folks love grilling because cooking outdoors feels satisfactory,and the food'tastes so good.'But if you think grills are exclusively reserved for chicken wings and baby back ribs,you’re wrong.Add some of these foods to your next barbecue’s menu and get ready to become a bona fide grill master.
文摘Egypt takes a liking to Chinese food For those who think Peking(former name of Beijing)is in China,coming to Egypt would be an eye-opener.There’s a Peking in the upmarket Mohandeseen District of Giza,the city that harbors some of the greatest pyramids of Egypt;a second one in the Zamalek District of Greater Cairo frequented by expats,another one in Heliopolis and seven more.
文摘THE name Zhen Huan has once again become a household name across China, On August 18, 2017, the author of the popular novel featuring Zhen＇s life in the imperial court in the Qing Dynasty （1644-1911）, now also a hit TV series, filed the first case tried by the first online court, Hangzhou Court of the Internet, in China - and the world,
文摘Three years should be long enough to adapt to any situation,or so I thought.huffs of saying"yes,I can pick up food using chopsticks and not break out into an impromptu drum solo in the process"I sometimes get a bit lost for words when trying to exclaim that I don’t
文摘African countries can learn a lot from China in their quest for modernisation,For China,modernisation is a journey of hardship and perseverance.In modern times,the Chinese people tried to adopt modernisation formulas from the West,but none worked.Through its own efforts,China has modernised under the leadership of the Communist Party of China.It has transformed from an impoverished and backward nation into the world’s second-largest economy,the largest trader in goods,and the largest exporter.
文摘The world is currently facing a highly contagious and fatal pandemic caused by SARS-CoV-2,which is also the first pandemic caused by a coronavirus yet.As of 25 August 2020,the number of confirmed COVID-19 patients has exceeded 23,518,343 worldwide,with a death toll of over 810,492.1 To date,the greatest challenge we face is the incomplete knowledge of both SARS-CoV-2 and COVID-19,resulting in a lack of effective drugs and adequate treatment strategies.Despite various treatment options for critical COVID-19 patients,including extracorporeal membrane oxygenation,ventilation,tracheal intubation,circulatory support,and non-specific antiviral drugs,clinical outcomes are unsatisfactory.2 In particular,some mild or common COVID-19 patients experience sudden and rapid deterioration with the onset of fatal cytokine storm syndrome which cannot be treated by any conventional therapies.Therefore,from 2 February 2020 to 4 March 2020,the China National Health Commission has issued successively the 1st–7th editions of the Official Guidance of Diagnosis and Management for COVID-19 and formulated preliminary guidelines for the clinical application of convalescent plasma therapy(CPT)for critical COVID-19 patients.
基金Project supported by the National Natural Science Foundation of China.
文摘Fixed samples are introduced in the quantum Monte Carlo method to reduce square devia-tions so as to convergently optimize the parameters of tried wave functions. The tried wavefunctions attained in this way have been used to calculate energies of H_2, Li_2 and H_2O mole-cules. The results are satisfactory.
基金supported by the Fund of Xuzhou Science and Technology Key R&D Program(Social Development)Project(No.KC22289)the Postgraduate Research&Practice Innovation Program of Jiangsu Province(No.KYCX22_2783).
文摘Aqueous zinc-ion batteries(AZIBs)have developed rapidly in recent years but still face several challenges,including zinc dendrites growth,hydrogen evolution reaction,passivation and corrosion.The pH of the electrolyte plays a crucial role in these processes,significantly impacting the stability and reversibility of Zn^(2+)deposition.Therefore,pH-buffer tris(hydroxymethyl)amino methane(tris)is chosen as a versatile electrolyte additive to address these issues.Tris can buffer electrolyte pH at Zn/electrolyte interface by protonated/deprotonated nature of amino group,optimize the coordination environment of zinc solvate ions by its strong interaction with zinc ions,and simultaneously create an in-situ stable solid electrolyte interface membrane on the zinc anode surface.These synergistic effects effectively restrain dendrite formation and side reactions,resulting in a highly stable and reversible Zn anode,thereby enhancing the electrochemical performance of AZIBs.The Zn||Zn battery with 0.15 wt%tris additives maintains stable cycling for 1500 h at 4 mA·cm^(−2) and 1120 h at 10 mA·cm^(−2).Furthermore,the Coulombic efficiency reaches~99.2%at 4 mA·cm^(−2)@1 mAh·cm^(−2).The Zn||NVO full batteries also demonstrated a stable specific capacity and exceptional capacity retention.
基金National Natural Science Foundation of China,Grant/Award Number:62176124。
文摘Person Image Synthesis has been widely used in fashion with extensive application scenarios.The point of this task is how to synthesise person image from a single source image under arbitrary poses.Prior methods generate the person image with target pose well;however,they fail to preserve the fine style details of the source image.To address this problem,a robust style injection(RSI)model is proposed,which is a coarse-to-fine framework to synthesise target the person image.RSI develops a simple and efficient cross-attention based module to fuse the features of both source semantic styles and target pose for achieving the coarse aligned features.The adaptive instance normalisation is employed to enhance the aligned features in conjunction with source semantic styles.Subsequently,source semantic styles are further injected into the positional normalisation scheme to avoid the fine style details erosion caused by massive convolution.In training losses,optimal transport theory in the form of energy distance is introduced to constrain data distribution to refine the texture style details.Additionally,the authors’model is capable of editing the shape and texture of garments to the target style separately.The experiments demonstrate that the authors’RSI achieves better performance over the state-of-art methods.
文摘Photoinduced molecular oxygen activation is crucial for artificial photosynthesis.However,metal-free semiconductor photocatalysts with high activation efficiency are still lacking up to now.Herein,two isomorphic tris(triazolo)triazine-based covalent organic frameworks were successfully constructed under solvothermal conditions.And they possess high crystallinity,inherent porosity with large surface area and good stability.Strong electron donor-acceptor skeletons expand the visible light harvesting,also facilitate the charge separation and thus lead to their superior activity of photoinduced molecular oxygen activation including photosynthesis of tetrahydroquinolines and hydrogen peroxide.This work provides a way to improve the efficiency of molecular oxygen activation through the rational design of COFs,and also opens new avenues for the construction of highly active and metal-free photocatalysts toward sustainable solar-to-chemical energy conversion.
基金financially supported by the Scientific Research Innovation Project of Graduate School of South China Normal University (No. 2024KYLX081)。
文摘As a potential candidate for high-energy lithium-ion batteries (LIBs),nickel-rich cathodes encounter significant challenges due to structural instability arising from interphases.In this work,tris(ethenyl)-tris(ethenyl)silyloxysilane (HVDS) with Si–O bonds and unsaturated bonds is introduced as additive designing functional electrolyte to enhance the long-cycle stability of LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)/graphite LIBs at elevated temperature.The preferential oxidization and component of HVDS facilitate the generation of an extremely robust and ultra-thin cathode electrolyte interphase (CEI) comprising a chemically bonded silane polymer.This interphase effectively suppresses side-reactions of electrolyte,mitigates HF erosion,and reduces irreversible phase transitions.Benefiting from the above merits,the batteries’capacity retention shows a remarkable increase from 20% to 92% after nearly 1550 cycles conducted at room temperature.And under elevated temperature conditions (45℃),the capacity retention remains 80%after 670 cycles,in comparison to a drop to 80%after only 250 cycles with the blank electrolyte.These findings highlight HVDS’s potential to functionalize the electrolyte,marking a breakthrough in improving the longevity and reliability of NCM811/graphite LIBs under challenging conditions.
文摘重点词汇1.weak adj.虚弱的;无力的He was too weak even to lift his hand.他虚弱得连手都抬不起来。短语be weak in不擅长……;在……方面不行He is weak in sight and hearing.他的视力和听力都很差。2.remind v.提醒;使想起(1)remind sb to do sth提醒某人做某事He reminded me to write the letter.他提醒我写信。(2)remind sb of sth使某人想起某事She reminded him of the last time they had met.她让他想起他们上次的相遇。(3)remind sb+that从句提醒某人……
文摘You see them on every street-Shanghai's plethora of convenience stores:Family Mart,Kedi,7 Eleven and Lawson's.They are the real kings of convenience,supplying to the city's most carnal needs:hot food,drinks,cheap alcohol,and uh,sex toys/condoms.Pride of place at front of store are steel tubs flled with murky looking Soup and miscellaneous items on skewers,guan dong zhu[关东煮,derived from Japanese oden].Immensely popular with locals,they are often unfathomable to outsiders.But maybe we're missing out on something totally delicious?We sampled the lot of them,and here's the lowdown on the best of the bunch.
