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Effectively improving the extreme-pressure capacity of a class of intercalated zirconium phosphate materials

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Science China(Technological Sciences) 2024年第3期67卷 753-764页

作者： NIU WenXing ZHAO XinRui yuan min HOU ZhiGuo LIU Lei XU Hong DONG JinXiang Shanxi Key Laboratory of Chemical Product Engineering Cllege of Chemical Engineering and TechnologyTaiyuan University of TechnologyTaiyuan 030024China School of Chemical and Environmental Engineering Pingdingshan UniversityPingdingshan 467000China

We studied different long-chain ammonium ions intercalated zirconium phosphate α-ZrP, methylamine intercalated ZrP(MAZrP), tetramethylammonium hydroxide intercalated ZrP(TMAH-ZrP), dodecyltrimethylammonium bromide intercalated ZrP(DTAB-ZrP), and stearyl trimethyl ammonium bromide intercalated ZrP(STAB-ZrP) as grease co-additives in combination with isobutylene sulfide(SIB). The grease with co-additives displayed excellent extreme-pressure and anti-wear ***, the combination of the longest chain ammonium ion intercalated zirconium phosphate, STAB-ZrP/SIB, had the best tribological properties. In comparison to α-ZrP, the advantage of STAB-ZrP was that it did not form a large area of the dense physical film like α-ZrP on the worn surface, but rather gave the SIB a chance to contact with the fresh metal surface to generate a chemical film. Therefore, the sub-micron physical film and nanoscale chemical film always exist side by side on the contact surface during the friction process. This intercalated α-ZrP/SIB additive has great potential for use in harsh operating conditions.

关键词： intercalatedα-ZrP/SIB physical film chemical film tribological properties

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Palladium single atoms from melting nanoparticles on WO_(3-x) for boosted hydrogen evolution reaction

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Journal of Energy Chemistry 2024年第4期91卷 637-644页

作者： Zhongmiao Gong Zhigang Chen Hao Li Guang Yang min yuan Zhiyun Li Xueying Wan Yi Cui School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026AnhuiChina i-lab Vacuum Interconnected Nanotech WorkstationSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuChina School of Materials Science and Engineering Chongqing University of TechnologyChongqing 400054China Key Laboratory of Precision and Intelligent Chemistry School of Chemistry and Materials ScienceHefei National Research Center for Physical Sciences at the MicroscaleNational Synchrotron Radiation LaboratorySchool of Nuclear Science and TechnologyUniversity of Science and Technology of ChinaHefei 230026AnhuiChina

Surface-supported isolated atoms in single-atom catalysts(SACs)grant maximum utilization of metals in heterogeneous ***,we report a feasible pyrolysis strategy to synthesize Pd single atoms by thermally melting Pd nanoparticles on an oxygen-vacancy-rich tungsten-oxide matrix at reduction *** ambient pressure X-ray photoelectron spectroscopy was used to monitor the formation of zero-valence Pd single atoms and the increased metallic feature of WO_(3-x)***,the as-obtained zero-valence Pd single-atom catalyst exhibits a markedly boosted HER activity with a low overpotential(η_(10)=70 mV)at the current density of 10 mA/cm2and a small Tafel slope(b=68 mV/dec),nearly 150 mV and a 3,0-fold enhancement than those of Pd nanoparticles(η_(10)=220 mV,b=133 mV/dec)under the same *** addition,quasi in situ XPS results suggest the hydrogen spillover effect is more likely to occur on Pd single atoms during the electrochemical *** work may pave an interesting route for the rational design of highly-efficient single-atom catalysts,and the elucidation of corresponding enhanced reaction mechanisms by the utilization of advanced characterization techniques.

关键词： Pd WO_(3-x) Single-atom catalysts NAP-XPS HER

Constructing highly safe and long-life calcium ion batteries based on hydratedvanadium oxide cathodes featuring a pillar structure

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Rare Metals 2024年第6期43卷 2597-2612页

作者： Chun-Fang Wang Shi-Wei Zhang Lan Huang yuan-min Zhu Feng Liu Jian-Chuan Wang Li-ming Tan Chun-Yi Zhi Cui-Ping Han Powder Metallurgy Research Institute Central South UniversityChangsha410083China Songshan Lake Materials Laboratory Dongguan 523808China Research Institute of Interdisciplinary Science and School of Materials Science and Engineering Dongguan University of TechnologyDongguan 523808China Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Calcium-ion batteries(CIBs)have generated intense interest due to the growing demand for safer,cheaper,and large-scale energy storage ***,their development is still in its infancy,owing to the lack of suitable cathodes for sustaining reversiblc Ca^(2+)intercalation/***,layered H_(2)V_(3)O_(8)(HVO)with Zn^(2+)pre-insertion(ZHVO)is reported as a high-rate and highly durable cathode material for *** existence of Zn^(2+)and H_(2)O pillars could expand the interlayer spacing up to 1.8 nm,which is favorable for the diffusion of bulky Ca^(2+).The formation of Zn-O bonds facilitates electron transfer and enhances electrical ***,the ZHVO cathode achieves superior capacity performance(213.9 mAh·g^(-1)at 0.2 A·g^(-1))and long lifespan(78.3%for 1,000 cycles at 5 A·g^(-1))compared to pristine *** functional theory(DFT)calculations revealed that Zn^(2+)moved during Ca^(2+)intercalation,thereby reducing the diffusion energy barrier and facilitating Ca^(2+)***,a safe aqueous calcium ion cell was successfully assembled.

关键词： Multivalent batteries Calcium-ion batteries Layered structure Vanadium oxide Cathode materials

Bilateral choroidal ganglioneuroma:a comprehensive analysis of vision decline in a 6-year-old boy

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International Journal of Ophthalmology(English edition) 2024年第9期17卷 1755-1759页

作者： Yi-Zhe Cheng Li-Mei Sun min-Er yuan Lin-Yan Zhang Shu-Ya Ke Xiao-Yan Ding State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-sen UniversityGuangdong Provincial Key Laboratory of Ophthalmology and Visual ScienceGuangzhou 510060Guangdong ProvinceChina Guangdong Provincial Clinical Research Center for Ocular Diseases Guangzhou 510060Guangdong ProvinceChina

Dear Editor,We write to present a 6-year-old boy with bilateral choroidal ganglioneuroma(CG)by comprehensive multimodal imaging(MMI)in a duration of 6-year *** our knowledge,this is the first case report with elaborate data to delineate the natural history of visual function and MMI in a boy with rare bilateral CG,confirmed by choroid biopsy.

关键词： comprehensive modal fir

A likely paleo-autotetraploidization event shaped the high conservation of Nyssaceae genome

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Horticultural Plant Journal 2024年第3期10卷 911-930页

作者： Yishan Feng Zhenyi Wang Qimeng Xiao Jia Teng Jianyu Wang Zijian Yu Jiaqi Wang Qiang Xu Yan Zhang Shaoqi Shen Shoutong Bao Yu Li Zimo Yan Yue Ding Zihan Liu Yuxian Li Tianyu Lei min yuan Xiu-Qing Li Jinpeng Wang Department of Bioinformatics School of Life SciencesNorth China University of Science and TechnologyTangshanHebei 063000China Fredericton Research and Development Centre Agriculture and Agri-Food CanadaFrederictonNew Brunswick E3B 4Z7Canada State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of ScienceBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China

Scientific knowledge about the ancestral genome of core eudicot plant kingdom can potentially have profound impacts on both basic and applied research,including evolution,genetics,genomics,ecology,agriculture,forestry,and global *** investigate which plant conserves best the core eudicots common ancestor genome,we compared Arcto-Tertiary relict Nyssaceae and 30 other eudicot plant *** genomes of Davidia involucrata(a known living fossil),Camptotheca acuminata and Nyssa sinensis,one per existent genus of Nyssaceae,were performed comparative genomic *** found that Nyssaceae originated from a single Nyssaceae common tetraploidization event(NCT)-autotetraploidization 28-31 Mya after the core eudicot common hexaploidization(ECH).We identified Nyssaceae orthologous and paralogous genes,determined its chromosomal evolutionary trajectory,and reconstructed the Nyssaceae most recent ancestor *** genome contained the entire seven paleochromosomes and 17 ECH-generated eudicot common ancestor chromosomes and was the slowest in mutation among the analyzed 42 species of 31 plant *** both its high retention of paleochromosomes and its low mutation rate,*** provides the best case in conservation of the core eudicot paleogenome.

关键词： Nyssaceae Polyploidization Multigenome alignment Evolutionary rate Autotetraploidization Karyotype evolution

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中医药现代化内涵与战略路径思考

世界科学技术-中医药现代化 2024年第5期26卷 1125-1131页

作者：苏锦英袁敏张亭立陈璐苏钢强上海中医药大学

推动中医药现代化发展，对于国家，能够更好地服务于国家现代化的建设、国家社会经济的发展、健康中国的建设；对于行业，能够加快推动行业提质增效、实现高质量创新发展；对于群众，能够更好地服务人民群众生命健康、提高人民群众感受... 详细信息

推动中医药现代化发展，对于国家，能够更好地服务于国家现代化的建设、国家社会经济的发展、健康中国的建设；对于行业，能够加快推动行业提质增效、实现高质量创新发展；对于群众，能够更好地服务人民群众生命健康、提高人民群众感受度。本文围绕中医药行业贯彻落实党中央、国务院决策部署，立足新发展阶段，完整、准确、全面贯彻新发展理念，从中医药现代化的概念与内涵、战略依据、战略路径、战略思路、基本原则、战略评价维度等方面展开论述，最终从健康服务、科技创新、教育、产业、文化传播、治理体系和治理能力等方面提出推动中医药现代化的战略策略。

关键词：中医药现代化战略中国式现代化

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上海市域铁路高质量站城融合规划策略与实践

上海城市发展 2024年第1期 14-19页

作者：袁铭中铁上海设计院集团有限公司

引言:当前上海已步入存量空间发展的新阶段,可建设土地资源尤其宝贵。在此背景下,抓住市域铁路建设带来的战略机遇,做好高质量的站城融合,对我国发展城市群经济与贯彻长三角一体化国家战略、落实上海各项战略部署、建设人民城市具有重... 详细信息

引言:当前上海已步入存量空间发展的新阶段,可建设土地资源尤其宝贵。在此背景下,抓住市域铁路建设带来的战略机遇,做好高质量的站城融合,对我国发展城市群经济与贯彻长三角一体化国家战略、落实上海各项战略部署、建设人民城市具有重大的战略意义。

关键词：长三角一体化城市群经济市域铁路战略部署存量空间战略机遇策略与实践战略意义

研究生教育赋能新质生产力:核心要素、现实境遇与实践路径

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研究生教育研究 2024年第4期 12-18页

作者：倪晓玉袁敏孙师丹南京信息工程大学研究生院/党委研究生工作部南京210044 中国科学技术大学少年班学院合肥230026

新质生产力以科技创新为主导,以战略性新兴产业和未来产业为载体,以高层次创新人才为支撑,是符合新发展理念的先进生产力质态。研究生教育赋能新质生产力具有天然的优势:第一,培养拔尖创新人才,缔造新质生产力发展的人才要素;第二,加速... 详细信息

新质生产力以科技创新为主导,以战略性新兴产业和未来产业为载体,以高层次创新人才为支撑,是符合新发展理念的先进生产力质态。研究生教育赋能新质生产力具有天然的优势:第一,培养拔尖创新人才,缔造新质生产力发展的人才要素;第二,加速科学技术创新,锻造新质生产力发展的科技要素;第三,融汇现代产业发展,再造新质生产力发展的产业要素。随着新一轮科技革命和产业变革的加速推进,当前研究生教育面临着亟待转换研究生教育理念,提升研究生人才培养质量以及自主培养拔尖创新人才等方面的现实挑战。为此,在实践路径上提出四个方面建议:注重理念革新,树立“教育、科技、人才”一体推进的教育观;突出需求引领,推进高层次拔尖创新人才分类培养;坚持协同创新,建立科产教融合的协同育人机制;实施开放办学,着力提高研究生教育的国际化水平。

关键词：新质生产力研究生教育拔尖创新人才

野生稻CBF/DREB1转录因子的鉴定与生物信息学分析

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草业学报 2024年第6期33卷 126-144页

作者：霍晨敏袁敏张宝文王瑞菊河北经贸大学生物科学与工程学院河北石家庄050061 分子细胞生物学教育部重点实验室河北省细胞生物学基础学科研究中心河北省细胞信号与环境适应协同创新中心河北省分子细胞生物学重点实验室河北师范大学生命科学学院河北石家庄050024 华北理工大学生命科学学院河北唐山063210

低温冷害是限制栽培稻地域分布和产量的重要因素之一,严重影响我国的粮食安全。以CBF/DREB1为核心的C-重复结合因子-冷调节基因(CBF-COR)途径是水稻适应低温的重要信号传导途径。基于稻属9种植物的全基因测序结果和隐马尔可夫模型(HMM)... 详细信息

低温冷害是限制栽培稻地域分布和产量的重要因素之一,严重影响我国的粮食安全。以CBF/DREB1为核心的C-重复结合因子-冷调节基因(CBF-COR)途径是水稻适应低温的重要信号传导途径。基于稻属9种植物的全基因测序结果和隐马尔可夫模型(HMM)搜索,共鉴定出71个CBF/DREB1基因序列。所有基因均无内含子,由单个外显子组成。大部分DREB1s呈弱酸性,所有DREB1s亲水性平均值1,受到正选择压力。旁系同源基因之间启动子顺式元件种类和数量差异较大,直系同源基因的启动子顺式元件种类和数量很相似。对日本晴、93-11和东乡野生稻7 d幼苗4℃冷处理2 h的实时荧光定量PCR分析发现早期冷响应基因可分为激活型(DREB1A/1B/1C/1E/1F/1G/1H)和抑制型(DREB1D/1I/1J)。在日本晴、93-11和东乡野生稻冷激活型基因中,DREB1B/1G/1H均是冷处理后响应最快的一级冷响应因子,且启动子均含有至少一个拷贝的CAMTA转录因子结合元件CM2(CCGCGT)。OrDREB1B/1C/1E/1F/1G/1H在东乡野生稻4℃冷处理4 h后的表达量均高于栽培稻同源基因的表达量。9种稻属植物的CBF/DREB1基因亚家族的分子进化分析结果为低温抗性基因的挖掘和利用提供了前期基础。

关键词：野生稻 CBF/DREB1 保守基序选择压力启动子分析

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