The Experts below are selected from a list of 4425 Experts worldwide ranked by ideXlab platform
Wanzhen Zheng - One of the best experts on this subject based on the ideXlab platform.
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correction to a Universal Principle to accurately synthesize atomically dispersed metal n 4 sites for co 2 electroreduction
Nano-micro Letters, 2020Co-Authors: Wanzhen Zheng, Feng Chen, Qi Zeng, Zhongjian Li, Bin Yang, Qinghua Zhang, Feng He, Xilin WuAbstract:In the original publication, the author name was incorrectly published as Xilin Wu. The correct author name should be Xi-Lin Wu, which is provided in this correction.
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a Universal Principle to accurately synthesize atomically dispersed metal n4 sites for co2 electroreduction
Nano-micro Letters, 2020Co-Authors: Wanzhen Zheng, Feng Chen, Qi Zeng, Zhongjian Li, Bin Yang, Qinghua Zhang, Feng He, Xilin WuAbstract:Atomically dispersed metal–nitrogen sites-anchored carbon materials have been developed as effective catalysts for CO2 electroreduction (CO2ER), but they still suffer from the imprecisely control of type and coordination number of N atoms bonded with central metal. Herein, we develop a family of single metal atom bonded by N atoms anchored on carbons (SAs–M–N–C, M = Fe, Co, Ni, Cu) for CO2ER, which composed of accurate pyrrole-type M–N4 structures with isolated metal atom coordinated by four pyrrolic N atoms. Benefitting from atomically coordinated environment and specific selectivity of M–N4 centers, SAs–Ni–N–C exhibits superior CO2ER performance with onset potential of − 0.3 V, CO Faradaic efficiency (F.E.) of 98.5% at − 0.7 V, along with low Tafel slope of 115 mV dec−1 and superior stability of 50 h, exceeding all the previously reported M–N–C electrocatalysts for CO2-to-CO conversion. Experimental results manifest that the different intrinsic activities of M–N4 structures in SAs–M–N–C result in the corresponding sequence of Ni > Fe > Cu > Co for CO2ER performance. An integrated Zn–CO2 battery with Zn foil and SAs–Ni–N–C is constructed to simultaneously achieve CO2-to-CO conversion and electric energy output, which delivers a peak power density of 1.4 mW cm−2 and maximum CO F.E. of 93.3%.
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A Universal Principle to Accurately Synthesize Atomically Dispersed Metal–N4 Sites for CO2 Electroreduction
Nano-micro Letters, 2020Co-Authors: Wanzhen Zheng, Feng Chen, Qi Zeng, Zhongjian Li, Bin Yang, Qinghua Zhang, Feng He, Xilin WuAbstract:Atomically dispersed metal–nitrogen sites-anchored carbon materials have been developed as effective catalysts for CO2 electroreduction (CO2ER), but they still suffer from the imprecisely control of type and coordination number of N atoms bonded with central metal. Herein, we develop a family of single metal atom bonded by N atoms anchored on carbons (SAs–M–N–C, M = Fe, Co, Ni, Cu) for CO2ER, which composed of accurate pyrrole-type M–N4 structures with isolated metal atom coordinated by four pyrrolic N atoms. Benefitting from atomically coordinated environment and specific selectivity of M–N4 centers, SAs–Ni–N–C exhibits superior CO2ER performance with onset potential of − 0.3 V, CO Faradaic efficiency (F.E.) of 98.5% at − 0.7 V, along with low Tafel slope of 115 mV dec−1 and superior stability of 50 h, exceeding all the previously reported M–N–C electrocatalysts for CO2-to-CO conversion. Experimental results manifest that the different intrinsic activities of M–N4 structures in SAs–M–N–C result in the corresponding sequence of Ni > Fe > Cu > Co for CO2ER performance. An integrated Zn–CO2 battery with Zn foil and SAs–Ni–N–C is constructed to simultaneously achieve CO2-to-CO conversion and electric energy output, which delivers a peak power density of 1.4 mW cm−2 and maximum CO F.E. of 93.3%.
Xilin Wu - One of the best experts on this subject based on the ideXlab platform.
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correction to a Universal Principle to accurately synthesize atomically dispersed metal n 4 sites for co 2 electroreduction
Nano-micro Letters, 2020Co-Authors: Wanzhen Zheng, Feng Chen, Qi Zeng, Zhongjian Li, Bin Yang, Qinghua Zhang, Feng He, Xilin WuAbstract:In the original publication, the author name was incorrectly published as Xilin Wu. The correct author name should be Xi-Lin Wu, which is provided in this correction.
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a Universal Principle to accurately synthesize atomically dispersed metal n4 sites for co2 electroreduction
Nano-micro Letters, 2020Co-Authors: Wanzhen Zheng, Feng Chen, Qi Zeng, Zhongjian Li, Bin Yang, Qinghua Zhang, Feng He, Xilin WuAbstract:Atomically dispersed metal–nitrogen sites-anchored carbon materials have been developed as effective catalysts for CO2 electroreduction (CO2ER), but they still suffer from the imprecisely control of type and coordination number of N atoms bonded with central metal. Herein, we develop a family of single metal atom bonded by N atoms anchored on carbons (SAs–M–N–C, M = Fe, Co, Ni, Cu) for CO2ER, which composed of accurate pyrrole-type M–N4 structures with isolated metal atom coordinated by four pyrrolic N atoms. Benefitting from atomically coordinated environment and specific selectivity of M–N4 centers, SAs–Ni–N–C exhibits superior CO2ER performance with onset potential of − 0.3 V, CO Faradaic efficiency (F.E.) of 98.5% at − 0.7 V, along with low Tafel slope of 115 mV dec−1 and superior stability of 50 h, exceeding all the previously reported M–N–C electrocatalysts for CO2-to-CO conversion. Experimental results manifest that the different intrinsic activities of M–N4 structures in SAs–M–N–C result in the corresponding sequence of Ni > Fe > Cu > Co for CO2ER performance. An integrated Zn–CO2 battery with Zn foil and SAs–Ni–N–C is constructed to simultaneously achieve CO2-to-CO conversion and electric energy output, which delivers a peak power density of 1.4 mW cm−2 and maximum CO F.E. of 93.3%.
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A Universal Principle to Accurately Synthesize Atomically Dispersed Metal–N4 Sites for CO2 Electroreduction
Nano-micro Letters, 2020Co-Authors: Wanzhen Zheng, Feng Chen, Qi Zeng, Zhongjian Li, Bin Yang, Qinghua Zhang, Feng He, Xilin WuAbstract:Atomically dispersed metal–nitrogen sites-anchored carbon materials have been developed as effective catalysts for CO2 electroreduction (CO2ER), but they still suffer from the imprecisely control of type and coordination number of N atoms bonded with central metal. Herein, we develop a family of single metal atom bonded by N atoms anchored on carbons (SAs–M–N–C, M = Fe, Co, Ni, Cu) for CO2ER, which composed of accurate pyrrole-type M–N4 structures with isolated metal atom coordinated by four pyrrolic N atoms. Benefitting from atomically coordinated environment and specific selectivity of M–N4 centers, SAs–Ni–N–C exhibits superior CO2ER performance with onset potential of − 0.3 V, CO Faradaic efficiency (F.E.) of 98.5% at − 0.7 V, along with low Tafel slope of 115 mV dec−1 and superior stability of 50 h, exceeding all the previously reported M–N–C electrocatalysts for CO2-to-CO conversion. Experimental results manifest that the different intrinsic activities of M–N4 structures in SAs–M–N–C result in the corresponding sequence of Ni > Fe > Cu > Co for CO2ER performance. An integrated Zn–CO2 battery with Zn foil and SAs–Ni–N–C is constructed to simultaneously achieve CO2-to-CO conversion and electric energy output, which delivers a peak power density of 1.4 mW cm−2 and maximum CO F.E. of 93.3%.
S A Demakov - One of the best experts on this subject based on the ideXlab platform.
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banding patterns in drosophila melanogaster polytene chromosomes correlate with dna binding protein occupancy
BioEssays, 2012Co-Authors: Igor F. Zhimulev, Elena S. Belyaeva, Tatiana Yu Vatolina, S A DemakovAbstract:The most enigmatic feature of polytene chromosomes is their banding pattern, the genetic organization of which has been a very attractive puzzle for many years. Recent genome-wide protein mapping efforts have produced a wealth of data for the chromosome proteins of Drosophila cells. Based on their specific protein composition, the chromosomes comprise two types of bands, as well as interbands. These differ in terms of time of replication and specific types of proteins. The interbands are characterized by their association with “active” chromatin proteins, nucleosome remodeling, and origin recognition complexes, and so they have three functions: acting as binding sites for RNA pol II, initiation of replication and nucleosome remodeling of short fragments of DNA. The borders and organization of the same band and interband regions are largely identical, irrespective of the cell type studied. This demonstrates that the banding pattern is a Universal Principle of the organization of interphase polytene and non-polytene chromosomes. Editor's suggested further reading in BioEssays Caught in the act: Rapid, symbiont-driven evolutionAbstract Function and evolution of sex determination mechanisms, genes and pathways in insectsAbstract
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protein composition of interband regions in polytene and cell line chromosomes of drosophila melanogaster
BMC Genomics, 2011Co-Authors: S A Demakov, Elena S. Belyaeva, Tatiana Yu Vatolina, V N Babenko, V F Semeshin, Igor F. ZhimulevAbstract:Despite many efforts, little is known about distribution and interactions of chromatin proteins which contribute to the specificity of chromomeric organization of interphase chromosomes. To address this issue, we used publicly available datasets from several recent Drosophila genome-wide mapping and annotation projects, in particular, those from modENCODE project, and compared molecular organization of 13 interband regions which were accurately mapped previously. Here we demonstrate that in interphase chromosomes of Drosophila cell lines, the interband regions are enriched for a specific set of proteins generally characteristic of the "open" chromatin (RNA polymerase II, CHRIZ (CHRO), BEAF-32, BRE1, dMI-2, GAF, NURF301, WDS and TRX). These regions also display reduced nucleosome density, histone H1 depletion and pronounced enrichment for ORC2, a pre-replication complex component. Within the 13 interband regions analyzed, most were around 3-4 kb long, particularly those where many of said protein features were present. We estimate there are about 3500 regions with similar properties in chromosomes of D. melanogaster cell lines, which fits quite well the number of cytologically observed interbands in salivary gland polytene chromosomes. Our observations suggest strikingly similar organization of interband chromatin in polytene chromosomes and in chromosomes from cell lines thereby reflecting the existence of a Universal Principle of interphase chromosome organization.
Igor F. Zhimulev - One of the best experts on this subject based on the ideXlab platform.
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banding patterns in drosophila melanogaster polytene chromosomes correlate with dna binding protein occupancy
BioEssays, 2012Co-Authors: Igor F. Zhimulev, Elena S. Belyaeva, Tatiana Yu Vatolina, S A DemakovAbstract:The most enigmatic feature of polytene chromosomes is their banding pattern, the genetic organization of which has been a very attractive puzzle for many years. Recent genome-wide protein mapping efforts have produced a wealth of data for the chromosome proteins of Drosophila cells. Based on their specific protein composition, the chromosomes comprise two types of bands, as well as interbands. These differ in terms of time of replication and specific types of proteins. The interbands are characterized by their association with “active” chromatin proteins, nucleosome remodeling, and origin recognition complexes, and so they have three functions: acting as binding sites for RNA pol II, initiation of replication and nucleosome remodeling of short fragments of DNA. The borders and organization of the same band and interband regions are largely identical, irrespective of the cell type studied. This demonstrates that the banding pattern is a Universal Principle of the organization of interphase polytene and non-polytene chromosomes. Editor's suggested further reading in BioEssays Caught in the act: Rapid, symbiont-driven evolutionAbstract Function and evolution of sex determination mechanisms, genes and pathways in insectsAbstract
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protein composition of interband regions in polytene and cell line chromosomes of drosophila melanogaster
BMC Genomics, 2011Co-Authors: S A Demakov, Elena S. Belyaeva, Tatiana Yu Vatolina, V N Babenko, V F Semeshin, Igor F. ZhimulevAbstract:Despite many efforts, little is known about distribution and interactions of chromatin proteins which contribute to the specificity of chromomeric organization of interphase chromosomes. To address this issue, we used publicly available datasets from several recent Drosophila genome-wide mapping and annotation projects, in particular, those from modENCODE project, and compared molecular organization of 13 interband regions which were accurately mapped previously. Here we demonstrate that in interphase chromosomes of Drosophila cell lines, the interband regions are enriched for a specific set of proteins generally characteristic of the "open" chromatin (RNA polymerase II, CHRIZ (CHRO), BEAF-32, BRE1, dMI-2, GAF, NURF301, WDS and TRX). These regions also display reduced nucleosome density, histone H1 depletion and pronounced enrichment for ORC2, a pre-replication complex component. Within the 13 interband regions analyzed, most were around 3-4 kb long, particularly those where many of said protein features were present. We estimate there are about 3500 regions with similar properties in chromosomes of D. melanogaster cell lines, which fits quite well the number of cytologically observed interbands in salivary gland polytene chromosomes. Our observations suggest strikingly similar organization of interband chromatin in polytene chromosomes and in chromosomes from cell lines thereby reflecting the existence of a Universal Principle of interphase chromosome organization.
Sarah Apetrei - One of the best experts on this subject based on the ideXlab platform.
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the Universal Principle of grace feminism and anti calvinism in two seventeenth century women writers
Gender & History, 2009Co-Authors: Sarah ApetreiAbstract:This article presents one of the theological contexts for early feminist thought in England in the late seventeenth century. It argues that an emerging Universalist soteriology in Platonist and radical thought had a positive impact on discourses about sexual equality, and shows how two female writers (the Quaker Elizabeth Bathurst and the visionary M. Marsin) combined their critique of the doctrine of limited atonement – in other words, the idea of an exclusive elect – with a confident assertion of women's calling to preach and teach in the Church.
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The Universal Principle of Grace: Feminism and Anti‐Calvinism in Two Seventeenth‐Century Women Writers
Gender & History, 2009Co-Authors: Sarah ApetreiAbstract:This article presents one of the theological contexts for early feminist thought in England in the late seventeenth century. It argues that an emerging Universalist soteriology in Platonist and radical thought had a positive impact on discourses about sexual equality, and shows how two female writers (the Quaker Elizabeth Bathurst and the visionary M. Marsin) combined their critique of the doctrine of limited atonement – in other words, the idea of an exclusive elect – with a confident assertion of women's calling to preach and teach in the Church.
