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
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
As more and more people in China attend graduate schools, experts are raising questions about the quality of the education students receive, and some view the outlook as relatively bleak unless major changes are made....As more and more people in China attend graduate schools, experts are raising questions about the quality of the education students receive, and some view the outlook as relatively bleak unless major changes are made. At the National Association for the Study of Higher Education's 2005 annual meeting in November at Shanghai Jiao Tong University (Xuhui campus), a task force led by Yang Jie,展开更多
When I was in the third grade, I was chosen to be the princess in the school play. For weeks my mother had helped me practice my lines. But once on the stage, every word 1 from my head. Then my teacher asked me to cha...When I was in the third grade, I was chosen to be the princess in the school play. For weeks my mother had helped me practice my lines. But once on the stage, every word 1 from my head. Then my teacher asked me to change my role to be a narrator (解说者) for the play. 2 I didn’t tell my mother what had happened that day, she noticed my 3 and asked if I wanted to take a walk in the garden. It was a lovely spring day. We could see dandelions (蒲 公英) popping 4 the grass in bunches (束). I watched my mother bend down by one of the bunches. “I think I’ll dig up all these weeds,” she said. “From now on, we’ll 5 have roses in this garden.” “But I like dandelions,” I protested (抗议). “All flowers are 6 -even dandelions!” My mother looked at me seriously. “Yes, every flower gives pleasure in its own way, doesn’t it?” she asked thoughtfully. I nodded. “And that is 7 of people, too,” she added.展开更多
第一课时Section A(1a—2d)Ⅰ.根据首字母及句意补全单词。1.You mustn’t throw them about after you use p__ bags.2.Students from the middle school used 300 trees to build a w__ house.
Introduction The traditional approach to English learning and teaching is increasingly being challenged by the communicative method. Not everyone accepts or agrees with this new trend, while others feel that it is not...Introduction The traditional approach to English learning and teaching is increasingly being challenged by the communicative method. Not everyone accepts or agrees with this new trend, while others feel that it is not radical enough. ELT is a field full of controversy, and there is no universally accepted conventional wisdom. My personal experience of foreign language teaching has been with both junior and senior middle school students. In recent years I have been trying to implement the communicative method with the texts in the current senior books. In this paper I shall discuss the traditional approach, my own way of teaching and an experiment with both the traditional and communicative approach.展开更多
“细菌”带给人们的是不快的感觉。因此长期以来,人类发明了各种各样的抗生素与细菌作斗争,结果并不理想,因为不少细菌进化成了耐抗生素的物种。对此,专家疾呼“住手”,细菌,并非都是人类的敌人,不知下面这句颇具人情味的话会使你产生...“细菌”带给人们的是不快的感觉。因此长期以来,人类发明了各种各样的抗生素与细菌作斗争,结果并不理想,因为不少细菌进化成了耐抗生素的物种。对此,专家疾呼“住手”,细菌,并非都是人类的敌人,不知下面这句颇具人情味的话会使你产生怎样的联想:Let’s make peace。We should say’be kind tobacteria。They are our friends’。】展开更多
Let’s observe Nanjing women in winter.The reason I choose this season isbased on a simple, objective fact:autumn and winter make up most of theyear in Nanjing. The dry, cold days lasta long time. The spring won’t ar...Let’s observe Nanjing women in winter.The reason I choose this season isbased on a simple, objective fact:autumn and winter make up most of theyear in Nanjing. The dry, cold days lasta long time. The spring won’t arriveuntil people wait long enough; then itslips away almost at a blink of the eyeto give way to the hot summer days. It is a February day. According tothe time of the year the seasonshould be early spring. Yet展开更多
对话A:I want to go try on these clothes.我想试穿这些衣服。B:What did you find?你发现了什么?A:I found some jeans,and a new blouse.我找到一些牛仔裤和一件新的衬衣。B:Go and try it on.那去试试看吧。A:What do you think?你...对话A:I want to go try on these clothes.我想试穿这些衣服。B:What did you find?你发现了什么?A:I found some jeans,and a new blouse.我找到一些牛仔裤和一件新的衬衣。B:Go and try it on.那去试试看吧。A:What do you think?你觉得怎么样?B:I love that blouse on you.我觉得挺不错的。展开更多
“返老还童”是人们的奢望和奢盼,是童话里的故事。然而,科技发展到今天,已经有很多科学家,在专攻这个课题,无论他们的研究是公开的,或是秘密的,但是有点是相同的,那就是他们都是严肃认真地在埋头苦干。文章信息丰富,文采斐然,就读读这...“返老还童”是人们的奢望和奢盼,是童话里的故事。然而,科技发展到今天,已经有很多科学家,在专攻这个课题,无论他们的研究是公开的,或是秘密的,但是有点是相同的,那就是他们都是严肃认真地在埋头苦干。文章信息丰富,文采斐然,就读读这些词组:magic factors/immortality gene/regenerative(再生)medicine/fountain of youth,就能让读者激动不已。展开更多
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.
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As more and more people in China attend graduate schools, experts are raising questions about the quality of the education students receive, and some view the outlook as relatively bleak unless major changes are made. At the National Association for the Study of Higher Education's 2005 annual meeting in November at Shanghai Jiao Tong University (Xuhui campus), a task force led by Yang Jie,
文摘When I was in the third grade, I was chosen to be the princess in the school play. For weeks my mother had helped me practice my lines. But once on the stage, every word 1 from my head. Then my teacher asked me to change my role to be a narrator (解说者) for the play. 2 I didn’t tell my mother what had happened that day, she noticed my 3 and asked if I wanted to take a walk in the garden. It was a lovely spring day. We could see dandelions (蒲 公英) popping 4 the grass in bunches (束). I watched my mother bend down by one of the bunches. “I think I’ll dig up all these weeds,” she said. “From now on, we’ll 5 have roses in this garden.” “But I like dandelions,” I protested (抗议). “All flowers are 6 -even dandelions!” My mother looked at me seriously. “Yes, every flower gives pleasure in its own way, doesn’t it?” she asked thoughtfully. I nodded. “And that is 7 of people, too,” she added.
文摘第一课时Section A(1a—2d)Ⅰ.根据首字母及句意补全单词。1.You mustn’t throw them about after you use p__ bags.2.Students from the middle school used 300 trees to build a w__ house.
文摘Introduction The traditional approach to English learning and teaching is increasingly being challenged by the communicative method. Not everyone accepts or agrees with this new trend, while others feel that it is not radical enough. ELT is a field full of controversy, and there is no universally accepted conventional wisdom. My personal experience of foreign language teaching has been with both junior and senior middle school students. In recent years I have been trying to implement the communicative method with the texts in the current senior books. In this paper I shall discuss the traditional approach, my own way of teaching and an experiment with both the traditional and communicative approach.
文摘“细菌”带给人们的是不快的感觉。因此长期以来,人类发明了各种各样的抗生素与细菌作斗争,结果并不理想,因为不少细菌进化成了耐抗生素的物种。对此,专家疾呼“住手”,细菌,并非都是人类的敌人,不知下面这句颇具人情味的话会使你产生怎样的联想:Let’s make peace。We should say’be kind tobacteria。They are our friends’。】
文摘Let’s observe Nanjing women in winter.The reason I choose this season isbased on a simple, objective fact:autumn and winter make up most of theyear in Nanjing. The dry, cold days lasta long time. The spring won’t arriveuntil people wait long enough; then itslips away almost at a blink of the eyeto give way to the hot summer days. It is a February day. According tothe time of the year the seasonshould be early spring. Yet
文摘对话A:I want to go try on these clothes.我想试穿这些衣服。B:What did you find?你发现了什么?A:I found some jeans,and a new blouse.我找到一些牛仔裤和一件新的衬衣。B:Go and try it on.那去试试看吧。A:What do you think?你觉得怎么样?B:I love that blouse on you.我觉得挺不错的。
文摘“返老还童”是人们的奢望和奢盼,是童话里的故事。然而,科技发展到今天,已经有很多科学家,在专攻这个课题,无论他们的研究是公开的,或是秘密的,但是有点是相同的,那就是他们都是严肃认真地在埋头苦干。文章信息丰富,文采斐然,就读读这些词组:magic factors/immortality gene/regenerative(再生)medicine/fountain of youth,就能让读者激动不已。
