Translation regulation is an important layer of gene expression:Generation of genome-wide expression datasets at multi-omics levels in spatial,temporal,and cell-type resolution is essential for deciphering brain compl...Translation regulation is an important layer of gene expression:Generation of genome-wide expression datasets at multi-omics levels in spatial,temporal,and cell-type resolution is essential for deciphering brain complexity.Regulation of gene expression is a highly dynamic process aiming at the production of precise levels of gene products to guarantee optimal cellular function,in response to physiological cues.Speedy advances in next-generation sequencing enabled the understanding of epigenomic and transcriptomic dynamic landscapes of different brain regions along development,aging,and disease progression.However,the correlation of the“transcriptome”with protein levels is poor because numerous mRNAs are subjected to manipulation of their translation efficiency,to warrant a favorable result under certain conditions.Hence,it is widely accepted that regulation at the translation level is a vital layer of gene expression.Quantification of actively translated mRNA populations(i.e.,“translatome”)is a more reliable predictor of the“proteome”(Wang et al.,2020).展开更多
ZTE Corporation, a leading global provider of telecommunications equipment and network solutions, announced that it has successfully deployed eight 3G stations in the Mt. Everest National Park including at Mt Everest ...ZTE Corporation, a leading global provider of telecommunications equipment and network solutions, announced that it has successfully deployed eight 3G stations in the Mt. Everest National Park including at Mt Everest base camp, 5,180 meters above sea level, to provide quality voice and 3G broadband services for local residents and mountaineers from all around the world preparing to climb the world＇s highest mountain.展开更多
Perovskite solar cells (PSCs) have emerged as a new-generation photovoltaic technology that features both low manufacturing cost and high power conversion efficiencies (PCEs) [1-3].In the past decade,the PCEs of PSCs ...Perovskite solar cells (PSCs) have emerged as a new-generation photovoltaic technology that features both low manufacturing cost and high power conversion efficiencies (PCEs) [1-3].In the past decade,the PCEs of PSCs have increased from 3.8% to 25.5%,which are now comparable to those of silicon-based solar cells.Nevertheless,by comparing the detailed device parameters of record PSCs reported at different times,Peng et al.展开更多
Venous thromboembolism(VTE)is a typical cardiovascular disease,which is phenotypically characterized by painful leg swelling,chest pain,shortness of breath,and even death[1].VTE renders a high morbidity and mortality ...Venous thromboembolism(VTE)is a typical cardiovascular disease,which is phenotypically characterized by painful leg swelling,chest pain,shortness of breath,and even death[1].VTE renders a high morbidity and mortality as it is the main cause of death of hospitalized patients.Clinical treatment of VTE mostly adopts immediate anticoagulation agents via a risk assessment of bleeding.Basically,traditional Chinese medicine(TCM)has unique medicinal priority on reducing swelling,stopping bleeding and promoting blood circulation,which therefore can eliminate the obstruction of patient’s channels so as to exert analgesic and anti-inflammatory bioactivities[2].However,well-controlled and-designed clinical trials of the selected TCM formulae are widely performed to support the clinical application of traditional Chinese medicine for the prevention of VTE in a real world.展开更多
The original version of this article unfortunately contained some mistakes.1.The authors found that the data unit in Fig.3a–f is wrong.The corrected version of Fig.3 is given below:2.The authors found that explanatio...The original version of this article unfortunately contained some mistakes.1.The authors found that the data unit in Fig.3a–f is wrong.The corrected version of Fig.3 is given below:2.The authors found that explanation of the data lines in Fig.2e is wrong.The corrected version of the explanation of Fig.2e is given below:The DNB can endure approximately 300%stretching and withstand stress up to about 1.5 MPa,as shown in Fig.2e.展开更多
The black-phase formamidine-lead iodide(α-FAPbI_(3)),boasting an optimal bandgap of 1.5 eV,stands out as a premier choice for narrow-bandgap perovskite solar cells(PSCs),achieving a certified power conversion efficie...The black-phase formamidine-lead iodide(α-FAPbI_(3)),boasting an optimal bandgap of 1.5 eV,stands out as a premier choice for narrow-bandgap perovskite solar cells(PSCs),achieving a certified power conversion efficiency(PCE)of 26.1%[1−5].This impressive performance hinges on the orderly and homogeneous crystallization ofα-phase pure FAPbI_(3),facilitated by coordinating solvents such as dimethyl sulfoxide(DMSO)to form intermediates like PbI_(2)-DMSO complex(D-complex).The D-complex plays a pivotal role in crystallization thermodynamics,enabling the direct formation of α-FAPbI_(3) without the photoinactiveδ-phase[6−9].However,DMSO,a commonly used coordinating solvent,is highly hygroscopic and prone to hydration upon moisture exposure.This tendency leads to incomplete perovskite crystallization and accelerates the transformation of α-FAPbI_(3) into itsδ-phase[2,10].Consequently,the best-performing α-FAPbI_(3)PSCs must be processed in an inert atmosphere with strictly controlled relative humidity(RH)and suffers from relatively poor reproducibility.Given the hard-to-control atmosphere at industrial scale,it is challenging yet imperative to eliminate the negative effects stemming from hygroscopic coordinating solvents[11−13].展开更多
Predicting likely-to-churn users employing surveys is a challenging task.Individuals with different personalities may make different choices in the same situation,so we introduced social media avatars that reflect the...Predicting likely-to-churn users employing surveys is a challenging task.Individuals with different personalities may make different choices in the same situation,so we introduced social media avatars that reflect the user’s psychological state when analyzing their churn tendency.In this paper,we propose a multimodal framework that jointly learns image and text features to establish correlations among users with low net promoter score(NPS) and those likely to churn.We conducted experiments on actual data,and the results show that our proposed method can identify NPS-degraded users in advance,promoting the commercial development of the operator.展开更多
Sperm are haploid,but must be functionally equivalent to distribute alleles equally among progeny.Accordingly,gene products are shared through spermatid cytoplasmic bridges which erase phenotypic differences between i...Sperm are haploid,but must be functionally equivalent to distribute alleles equally among progeny.Accordingly,gene products are shared through spermatid cytoplasmic bridges which erase phenotypic differences between individual haploid sperm.Here,we show that a large class of mammalian genes are not completely shared across these bridges.We term these genes"genoinformative markers"(GIMs)and show that a subset can act as selfish genetic elements that spread alleles unevenly through murine,bovine,and human populations.We identify evolutionary pressure to avoid conflict between sperm and somatic function as GIMs are enriched for testis-specific gene expression,paralogs,and isoforms.展开更多
Although chimeric antigen receptor(CAR)T cells have altered the treatment landscape for B cell malignancies,the risk of on-target,off-tumour toxicity has hampered their development for solid tumours because most targe...Although chimeric antigen receptor(CAR)T cells have altered the treatment landscape for B cell malignancies,the risk of on-target,off-tumour toxicity has hampered their development for solid tumours because most target antigens are shared with normal cells1,2.Researchers have attempted to apply Boolean-logic gating to CAR T cells to prevent toxicity3-5;however,a truly safe and effective logic-gated CAR has remained elusive6.展开更多
Therapeutic oligonucleotides have emerged as a powerful drug modality with the potential to treat a wide range of diseases;however,the rising number of therapies poses a manufacturing challenge.Existing synthetic meth...Therapeutic oligonucleotides have emerged as a powerful drug modality with the potential to treat a wide range of diseases;however,the rising number of therapies poses a manufacturing challenge.Existing synthetic methods use stepwise extension of sequences immobilized on solid supports and are limited by their scalability and sustainability.We report a biocatalytic approach to efficiently produce oligonucleotides in a single operation where polymerases and endonucleases work in synergy to amplify complementary sequences embedded within catalytic self-priming templates.This approach uses unprotected building blocks and aqueous conditions.We demonstrate the versatility of this methodology through the synthesis of clinically relevant oligonucleotide sequences containing diverse modifications.展开更多
lontronic sensors,based on sophisticated control of ion concentration,depletion,and flow,have attracted considerable research attention because of their high compatibility with constructed human-machine interfaces[1-3...lontronic sensors,based on sophisticated control of ion concentration,depletion,and flow,have attracted considerable research attention because of their high compatibility with constructed human-machine interfaces[1-3].Especially,iontronic sensors constructed of confined nano/micropipettes can realize biomolecule dynamic detection of dopamine[4],adenosine triphosphate[5],and hydrogen peroxide[6].These pipette-confined iontronic sensors have significant advantages for implantable in vivo sensing because of their high spatiotemporal resolution and robust implantable tips[7].However,the nonspecific adsorption of proteins onto the sensing interface largely limits their application to in vivo sensing.展开更多
Since its domestication from wild rice thousands of years ago, rice has been cultivated largely through transplantation. During transplantation from the nursery to the paddy field, rice seedlings experience transplant...Since its domestication from wild rice thousands of years ago, rice has been cultivated largely through transplantation. During transplantation from the nursery to the paddy field, rice seedlings experience transplantation shock which affects their physiology and production.However, the mechanisms underlying transplantation shock and rice adaptation to this shock are largely unknown. Here,we isolated a transplant-sensitive chloroplast-deficient（tsc_1）rice mutant that produces albino leaves after transplantation.Blocking light from reaching the juvenile leaves and leaf primordia caused chloroplast deficiencies in transplanted tsc_1 seedlings. TSC_1 encodes a noncanonical adenosine triphosphate-binding cassette（ABC） transporter homologous to At NAP_（14） and is of cyanobacterial origin. We demonstrate that TSC_1 controls plastid development in rice under dark conditions, and functions independently of light signaling.However, light rescued the tsc_1 mutant phenotype in a spectrum-independent manner. TSC_1 was upregulated following transplantation, and modulated the iron and copper levels, thereby regulating prolamellar body formation during the early P_4 stage of leaf development. Therefore, TSC_1 is indispensable for plastid development in the absence of light,and contributes to adaptation to transplantation shock.Our study provides insight into the regulation of plastid development and establishes a framework for improving recovery from transplantation shock in rice.展开更多
Switching from fossil-fuel economy to hydrogen economy requires efficient catalysts to facilitate several funda- mental electrochemical reactions,including oxygen evolution reaction (OER),hydrogen evolution reaction (...Switching from fossil-fuel economy to hydrogen economy requires efficient catalysts to facilitate several funda- mental electrochemical reactions,including oxygen evolution reaction (OER),hydrogen evolution reaction (HER),oxygen reduction reaction (ORR),and hydrogen oxidation reaction (HOR).At present,platinum-group materials are still considered as the state-of-the-art catalysts,which,however,are rare and expensive,resulting in tremendous restrictions to wide usage.The future of hydrogen economy demands the design of cost-effective and highly active catalysts that are geologically abundant, particularly for affordable and scalable device systems.As for non-platinum-group electrocatalysts,strategies to enhance their catalytic performances include controlling their size,morphology and composition,creating defects and strains,as well as modulating the van der Waals interactions and crystal phases,etc.[1,2].Although remarkable progress has been achieved,innovations in catalyst design that aim to further promote catalytic activities are still highly desired.展开更多
With the support from the National Natural Science Foundation of China and National Key Research&Development Project of China,the research team led by Prof.Zou YingPing(邹应萍)at the College of Chemistry and Chemi...With the support from the National Natural Science Foundation of China and National Key Research&Development Project of China,the research team led by Prof.Zou YingPing(邹应萍)at the College of Chemistry and Chemical Engineering,Central South University,reported a new nonfullerene acceptor Y6 with a fused-ring structure containing electron-deficient bcnzothiadiazole core.展开更多
Propagation of sound waves through reflections along a curved surface was first theoretically analyzed by Lord Rayleigh to explain the whispering gallery waves in St. Paul＇s Cathedral in London. Similar whispering ga...Propagation of sound waves through reflections along a curved surface was first theoretically analyzed by Lord Rayleigh to explain the whispering gallery waves in St. Paul＇s Cathedral in London. Similar whispering gallery sound waves are now a popular tourist attraction at the Echo Wall of the Temple of Heaven in Beijing. Whispering gallery phenomena also exist for light waves in dielectric spheres, disks, or toroids where total internal reflection allows the light to circulate with little attenuation and interfere with itself to form optical resonances or modes. These ＂whisper- ing gallery modes＂ have found applications ranging from photonics, quantum physics, biosensing, to optical clocks [1,2].展开更多
Subject Code:E02 With the support by the National Natural Science Foundation of China,a research team led by Prof.Yu Shuhong(俞书宏)from the University of Science and Technology of China made a breakthrough in the cle...Subject Code:E02 With the support by the National Natural Science Foundation of China,a research team led by Prof.Yu Shuhong(俞书宏)from the University of Science and Technology of China made a breakthrough in the cleanup of viscous crude-oil spill.Their team for the first time realized the fast absorption of high展开更多
With the support by the National Natural Science Foundation of China,the research group led by Prof.Chen Yiyun(陈以昀)from Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences demonstrates that the dono...With the support by the National Natural Science Foundation of China,the research group led by Prof.Chen Yiyun(陈以昀)from Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences demonstrates that the donor-acceptor complex enables metal-free inert bond functionalizations,which was published in Angew Chem Int Ed(2017,56(41):12619-12623).展开更多
Digital holographic microscopy enables the 3D reconstruction of volumetric samples from a single-snapshot hologram.However,unlike a conventional bright-field microscopy image,the quality of holographic reconstructions...Digital holographic microscopy enables the 3D reconstruction of volumetric samples from a single-snapshot hologram.However,unlike a conventional bright-field microscopy image,the quality of holographic reconstructions is compromised by interference fringes as a result of twin images and out-of-plane objects.Here,we demonstrate that cross-modality deep learning using a generative adversarial network(GAN)can endow holographic images of a sample volume with bright-field microscopy contrast,combining the volumetric imaging capability of holography with the speckle-and artifact-free image contrast of incoherent bright-field microscopy.We illustrate the performance of this“bright-field holography”method through the snapshot imaging of bioaerosols distributed in 3D,matching the artifact-free image contrast and axial sectioning performance of a high-NA bright-field microscope.This data-driven deep-learning-based imaging method bridges the contrast gap between coherent and incoherent imaging,and enables the snapshot 3D imaging of objects with bright-field contrast from a single hologram,benefiting from the wave-propagation framework of holography.展开更多
In the version of the article originally published in volume 64,issue 1,2021 of Sci China Mater(2021,64(1):52–60,https://doi.org/10.1007/s40843-020-1408-x),the chemical formula of Sn(DMSO)_(4)Cl_(4)(page 54,8^(th) li...In the version of the article originally published in volume 64,issue 1,2021 of Sci China Mater(2021,64(1):52–60,https://doi.org/10.1007/s40843-020-1408-x),the chemical formula of Sn(DMSO)_(4)Cl_(4)(page 54,8^(th) line in the left column;page 56,4^(th) and 6^(th) lines from the bottom of left column and in Equations(6 and 7)in the right column)was miswritten.The correct formula should be as below:SN(DMSO)_(2)CL_(4).展开更多
Dear Editor,Soybean(Glycine max)is a major source of plant-based protein for people worldwide,providing a healthy,affordable,and environmentally friendly alternative to animal-based protein(Montgomery,2003).It has bee...Dear Editor,Soybean(Glycine max)is a major source of plant-based protein for people worldwide,providing a healthy,affordable,and environmentally friendly alternative to animal-based protein(Montgomery,2003).It has been estimated that there are currently over 12000 food products that contain soy protein(Montgomery,2003).Different food applications of soy protein require distinct properties that affect its function and sensory features.For instance,the sensory quality of soymilk is significantly affected by protein emulsibility,whereas tofu quality is determined by protein-gelling ability(Kinsella,1979).展开更多
基金funded by the Israel Science Foundation(grants No.1036/12 and 1228/20)(to OES).
文摘Translation regulation is an important layer of gene expression:Generation of genome-wide expression datasets at multi-omics levels in spatial,temporal,and cell-type resolution is essential for deciphering brain complexity.Regulation of gene expression is a highly dynamic process aiming at the production of precise levels of gene products to guarantee optimal cellular function,in response to physiological cues.Speedy advances in next-generation sequencing enabled the understanding of epigenomic and transcriptomic dynamic landscapes of different brain regions along development,aging,and disease progression.However,the correlation of the“transcriptome”with protein levels is poor because numerous mRNAs are subjected to manipulation of their translation efficiency,to warrant a favorable result under certain conditions.Hence,it is widely accepted that regulation at the translation level is a vital layer of gene expression.Quantification of actively translated mRNA populations(i.e.,“translatome”)is a more reliable predictor of the“proteome”(Wang et al.,2020).
文摘ZTE Corporation, a leading global provider of telecommunications equipment and network solutions, announced that it has successfully deployed eight 3G stations in the Mt. Everest National Park including at Mt Everest base camp, 5,180 meters above sea level, to provide quality voice and 3G broadband services for local residents and mountaineers from all around the world preparing to climb the world＇s highest mountain.
文摘Perovskite solar cells (PSCs) have emerged as a new-generation photovoltaic technology that features both low manufacturing cost and high power conversion efficiencies (PCEs) [1-3].In the past decade,the PCEs of PSCs have increased from 3.8% to 25.5%,which are now comparable to those of silicon-based solar cells.Nevertheless,by comparing the detailed device parameters of record PSCs reported at different times,Peng et al.
基金the Natural Science Foundation of Heilongjiang Province(No.LH2021H016)the Fundamental Research Funds for the Central Universities(No.KLSB2022KF-02)HMU Marshal Initiative Funding(No.HMUMIF-21026).
文摘Venous thromboembolism(VTE)is a typical cardiovascular disease,which is phenotypically characterized by painful leg swelling,chest pain,shortness of breath,and even death[1].VTE renders a high morbidity and mortality as it is the main cause of death of hospitalized patients.Clinical treatment of VTE mostly adopts immediate anticoagulation agents via a risk assessment of bleeding.Basically,traditional Chinese medicine(TCM)has unique medicinal priority on reducing swelling,stopping bleeding and promoting blood circulation,which therefore can eliminate the obstruction of patient’s channels so as to exert analgesic and anti-inflammatory bioactivities[2].However,well-controlled and-designed clinical trials of the selected TCM formulae are widely performed to support the clinical application of traditional Chinese medicine for the prevention of VTE in a real world.
文摘The original version of this article unfortunately contained some mistakes.1.The authors found that the data unit in Fig.3a–f is wrong.The corrected version of Fig.3 is given below:2.The authors found that explanation of the data lines in Fig.2e is wrong.The corrected version of the explanation of Fig.2e is given below:The DNB can endure approximately 300%stretching and withstand stress up to about 1.5 MPa,as shown in Fig.2e.
基金support from the National Natural Science Foundation of China(Grant Nos.62205154 and 62288102)the Natural Science Research Start-up Foundation of Recruiting Talents of Nanjing University of Posts and Telecommunications(Grant No.NY221112).
文摘The black-phase formamidine-lead iodide(α-FAPbI_(3)),boasting an optimal bandgap of 1.5 eV,stands out as a premier choice for narrow-bandgap perovskite solar cells(PSCs),achieving a certified power conversion efficiency(PCE)of 26.1%[1−5].This impressive performance hinges on the orderly and homogeneous crystallization ofα-phase pure FAPbI_(3),facilitated by coordinating solvents such as dimethyl sulfoxide(DMSO)to form intermediates like PbI_(2)-DMSO complex(D-complex).The D-complex plays a pivotal role in crystallization thermodynamics,enabling the direct formation of α-FAPbI_(3) without the photoinactiveδ-phase[6−9].However,DMSO,a commonly used coordinating solvent,is highly hygroscopic and prone to hydration upon moisture exposure.This tendency leads to incomplete perovskite crystallization and accelerates the transformation of α-FAPbI_(3) into itsδ-phase[2,10].Consequently,the best-performing α-FAPbI_(3)PSCs must be processed in an inert atmosphere with strictly controlled relative humidity(RH)and suffers from relatively poor reproducibility.Given the hard-to-control atmosphere at industrial scale,it is challenging yet imperative to eliminate the negative effects stemming from hygroscopic coordinating solvents[11−13].
基金supported by the NSFC-Zhejiang Joint Fund for the Industrialization and Informatization (No.U1809211)。
文摘Predicting likely-to-churn users employing surveys is a challenging task.Individuals with different personalities may make different choices in the same situation,so we introduced social media avatars that reflect the user’s psychological state when analyzing their churn tendency.In this paper,we propose a multimodal framework that jointly learns image and text features to establish correlations among users with low net promoter score(NPS) and those likely to churn.We conducted experiments on actual data,and the results show that our proposed method can identify NPS-degraded users in advance,promoting the commercial development of the operator.
文摘Sperm are haploid,but must be functionally equivalent to distribute alleles equally among progeny.Accordingly,gene products are shared through spermatid cytoplasmic bridges which erase phenotypic differences between individual haploid sperm.Here,we show that a large class of mammalian genes are not completely shared across these bridges.We term these genes"genoinformative markers"(GIMs)and show that a subset can act as selfish genetic elements that spread alleles unevenly through murine,bovine,and human populations.We identify evolutionary pressure to avoid conflict between sperm and somatic function as GIMs are enriched for testis-specific gene expression,paralogs,and isoforms.
文摘Although chimeric antigen receptor(CAR)T cells have altered the treatment landscape for B cell malignancies,the risk of on-target,off-tumour toxicity has hampered their development for solid tumours because most target antigens are shared with normal cells1,2.Researchers have attempted to apply Boolean-logic gating to CAR T cells to prevent toxicity3-5;however,a truly safe and effective logic-gated CAR has remained elusive6.
文摘Therapeutic oligonucleotides have emerged as a powerful drug modality with the potential to treat a wide range of diseases;however,the rising number of therapies poses a manufacturing challenge.Existing synthetic methods use stepwise extension of sequences immobilized on solid supports and are limited by their scalability and sustainability.We report a biocatalytic approach to efficiently produce oligonucleotides in a single operation where polymerases and endonucleases work in synergy to amplify complementary sequences embedded within catalytic self-priming templates.This approach uses unprotected building blocks and aqueous conditions.We demonstrate the versatility of this methodology through the synthesis of clinically relevant oligonucleotide sequences containing diverse modifications.
基金financially supported by the Beijing Natural Science Foundation(Z230022 for Ping Yu,2242028 for Wenjie Ma)the National Natural Science Foundation of China(22125406 and 22074149 for Ping Yu,22074095 and 22374103 for Yuqing Lin)the National Basic Research Program of China(2022YFA1204500,2022YFA1204503 to Ping Yu).
文摘lontronic sensors,based on sophisticated control of ion concentration,depletion,and flow,have attracted considerable research attention because of their high compatibility with constructed human-machine interfaces[1-3].Especially,iontronic sensors constructed of confined nano/micropipettes can realize biomolecule dynamic detection of dopamine[4],adenosine triphosphate[5],and hydrogen peroxide[6].These pipette-confined iontronic sensors have significant advantages for implantable in vivo sensing because of their high spatiotemporal resolution and robust implantable tips[7].However,the nonspecific adsorption of proteins onto the sensing interface largely limits their application to in vivo sensing.
基金supported by the National Key R&D Program of China (2016YFD0100700)the Ministry of Agriculture of China for Transgenic Research (2016ZX08009003-004)the National Natural Science Foundation (31570269, 31570279, and 31370284)
文摘Since its domestication from wild rice thousands of years ago, rice has been cultivated largely through transplantation. During transplantation from the nursery to the paddy field, rice seedlings experience transplantation shock which affects their physiology and production.However, the mechanisms underlying transplantation shock and rice adaptation to this shock are largely unknown. Here,we isolated a transplant-sensitive chloroplast-deficient（tsc_1）rice mutant that produces albino leaves after transplantation.Blocking light from reaching the juvenile leaves and leaf primordia caused chloroplast deficiencies in transplanted tsc_1 seedlings. TSC_1 encodes a noncanonical adenosine triphosphate-binding cassette（ABC） transporter homologous to At NAP_（14） and is of cyanobacterial origin. We demonstrate that TSC_1 controls plastid development in rice under dark conditions, and functions independently of light signaling.However, light rescued the tsc_1 mutant phenotype in a spectrum-independent manner. TSC_1 was upregulated following transplantation, and modulated the iron and copper levels, thereby regulating prolamellar body formation during the early P_4 stage of leaf development. Therefore, TSC_1 is indispensable for plastid development in the absence of light,and contributes to adaptation to transplantation shock.Our study provides insight into the regulation of plastid development and establishes a framework for improving recovery from transplantation shock in rice.
文摘Switching from fossil-fuel economy to hydrogen economy requires efficient catalysts to facilitate several funda- mental electrochemical reactions,including oxygen evolution reaction (OER),hydrogen evolution reaction (HER),oxygen reduction reaction (ORR),and hydrogen oxidation reaction (HOR).At present,platinum-group materials are still considered as the state-of-the-art catalysts,which,however,are rare and expensive,resulting in tremendous restrictions to wide usage.The future of hydrogen economy demands the design of cost-effective and highly active catalysts that are geologically abundant, particularly for affordable and scalable device systems.As for non-platinum-group electrocatalysts,strategies to enhance their catalytic performances include controlling their size,morphology and composition,creating defects and strains,as well as modulating the van der Waals interactions and crystal phases,etc.[1,2].Although remarkable progress has been achieved,innovations in catalyst design that aim to further promote catalytic activities are still highly desired.
文摘With the support from the National Natural Science Foundation of China and National Key Research&Development Project of China,the research team led by Prof.Zou YingPing(邹应萍)at the College of Chemistry and Chemical Engineering,Central South University,reported a new nonfullerene acceptor Y6 with a fused-ring structure containing electron-deficient bcnzothiadiazole core.
文摘Propagation of sound waves through reflections along a curved surface was first theoretically analyzed by Lord Rayleigh to explain the whispering gallery waves in St. Paul＇s Cathedral in London. Similar whispering gallery sound waves are now a popular tourist attraction at the Echo Wall of the Temple of Heaven in Beijing. Whispering gallery phenomena also exist for light waves in dielectric spheres, disks, or toroids where total internal reflection allows the light to circulate with little attenuation and interfere with itself to form optical resonances or modes. These ＂whisper- ing gallery modes＂ have found applications ranging from photonics, quantum physics, biosensing, to optical clocks [1,2].
文摘Subject Code:E02 With the support by the National Natural Science Foundation of China,a research team led by Prof.Yu Shuhong(俞书宏)from the University of Science and Technology of China made a breakthrough in the cleanup of viscous crude-oil spill.Their team for the first time realized the fast absorption of high
文摘With the support by the National Natural Science Foundation of China,the research group led by Prof.Chen Yiyun(陈以昀)from Shanghai Institute of Organic Chemistry,Chinese Academy of Sciences demonstrates that the donor-acceptor complex enables metal-free inert bond functionalizations,which was published in Angew Chem Int Ed(2017,56(41):12619-12623).
基金The Ozcan Group at UCLA acknowledges the support of the Koç Group,the National Science Foundation(PATHS-UP ERC)the Howard Hughes Medical Institute.Y.W.also acknowledges the support of the SPIE John Kiel Scholarship.
文摘Digital holographic microscopy enables the 3D reconstruction of volumetric samples from a single-snapshot hologram.However,unlike a conventional bright-field microscopy image,the quality of holographic reconstructions is compromised by interference fringes as a result of twin images and out-of-plane objects.Here,we demonstrate that cross-modality deep learning using a generative adversarial network(GAN)can endow holographic images of a sample volume with bright-field microscopy contrast,combining the volumetric imaging capability of holography with the speckle-and artifact-free image contrast of incoherent bright-field microscopy.We illustrate the performance of this“bright-field holography”method through the snapshot imaging of bioaerosols distributed in 3D,matching the artifact-free image contrast and axial sectioning performance of a high-NA bright-field microscope.This data-driven deep-learning-based imaging method bridges the contrast gap between coherent and incoherent imaging,and enables the snapshot 3D imaging of objects with bright-field contrast from a single hologram,benefiting from the wave-propagation framework of holography.
文摘In the version of the article originally published in volume 64,issue 1,2021 of Sci China Mater(2021,64(1):52–60,https://doi.org/10.1007/s40843-020-1408-x),the chemical formula of Sn(DMSO)_(4)Cl_(4)(page 54,8^(th) line in the left column;page 56,4^(th) and 6^(th) lines from the bottom of left column and in Equations(6 and 7)in the right column)was miswritten.The correct formula should be as below:SN(DMSO)_(2)CL_(4).
基金supported by the ChuYing scholar program of Fujian province to Y.G.
文摘Dear Editor,Soybean(Glycine max)is a major source of plant-based protein for people worldwide,providing a healthy,affordable,and environmentally friendly alternative to animal-based protein(Montgomery,2003).It has been estimated that there are currently over 12000 food products that contain soy protein(Montgomery,2003).Different food applications of soy protein require distinct properties that affect its function and sensory features.For instance,the sensory quality of soymilk is significantly affected by protein emulsibility,whereas tofu quality is determined by protein-gelling ability(Kinsella,1979).
