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Simultaneous removal of Cd(Ⅱ)and As(Ⅴ)by ferrihydrite-biochar composite:Enhanced effects of As(Ⅴ)on Cd(Ⅱ)adsorption

Journal of Environmental Sciences 2024年第5期139卷 267-280页

作者： Wenjun Zeng Yang Lu jingyan zhou Jie Zhang Yuanxiao Duan Changxun Dong Wencheng Wu College of Sciences Nanjing Agricultural UniversityNanjing 210095China South China Institute of Environmental Sciences Ministry of Ecology and EnvironmentGuangzhou 510655China Guangdong Engineering&Technology Research Center for System Control of Livestock and Poultry breeding Pollution Guangzhou 510655China

The coexistence of cadmium(Cd(Ⅱ))and arsenate(As(Ⅴ))pollution has long been an environmental ***,a porous carbonaceous material with tunable functionality,has been used for the remediation of contaminated ***,it is still challenging for the dynamic quantification and mechanistic understanding of the simultaneous sequestration of multi-metals in biochar-engineered environment,especially in the presence of *** this study,ferrihydrite was coprecipitated with biochar to investigate how ferrihydritebiochar composite affects the fate of heavy metals,especially in the coexistence of Cd(Ⅱ)and As(Ⅴ).In the solution system containing both Cd(Ⅱ)and As(Ⅴ),the maximum adsorption capacities of ferrihydrite-biochar composite for Cd(Ⅱ)and As(Ⅴ)reached 82.03μmol/g and 531.53μmol/g,respectively,much higher than those of the pure biochar(26.90μmol/g for Cd(Ⅱ),and 40.24μmol/g for As(Ⅴ))and ferrihydrite(42.26μmol/g for Cd(Ⅱ),and 248.25μmol/g for As(Ⅴ)).Cd(Ⅱ)adsorption increased in the presence of As(Ⅴ),possibly due to the changes in composite surface charge in the presence of As(Ⅴ),and the increased dispersion of ferrihydrite by *** microscopic and mechanistic results showed that Cd(Ⅱ)complexed with both biochar and ferrihydrite,while As(Ⅴ)was mainly complexed by ferrihydrite in the Cd(Ⅱ)and As(Ⅴ)coexistence *** posed vital importance for the co-adsorption of Cd(Ⅱ)and As(Ⅴ).The different distribution patterns revealed by this study help to a deeper understanding of the behaviors of cations and anions in the natural environment.

关键词： Ferrihydrite Biochar Cadmium Arsenate Simultaneous sequestration Binding mechanisms

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用户偏好视域下图书馆文化创意产品开发对策研究

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图书馆学研究 2024年第1期 46-58页

作者：王毅周婧妍上海大学文化遗产与信息管理学院图书情报学系上海大学文化遗产与信息管理学院

文章旨在通过文本挖掘和回归分析的方式探究用户偏好视域下图书馆文创产品影响因素,为图书馆文创开发管理提供建议。通过调研国家图书馆和故宫博物院文创线上商店,运用网络爬虫技术获取文创产品相关数据。一方面,在对文创产品评论正负... 详细信息

文章旨在通过文本挖掘和回归分析的方式探究用户偏好视域下图书馆文创产品影响因素,为图书馆文创开发管理提供建议。通过调研国家图书馆和故宫博物院文创线上商店,运用网络爬虫技术获取文创产品相关数据。一方面,在对文创产品评论正负向分类的基础上进行TF-IDF权重计算和主题词分析;另一方面,通过回归分析探究文创产品多维特征属性对产品销量的影响关系。综合上述分析结果,对图书馆文创产品开发提出对策与建议:以文化为核心,挖掘特色馆藏资源文化内涵;以品质为保障,实现质量与功能实用的创意融合;以用户为导向,通过多元交互赋予产品更多的创意展现;以营销为引擎,完善图书馆文创开发生态体系。

关键词：文化创意产品图书馆用户偏好开发对策

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“双减”背景下义务教育阶段教育改革的特点与实践——以北京市顺义区“双减”工作实践探索为例

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基础教育参考 2024年第4期 73-80页

作者：周靖彦北京顺义区教育研究和教师研修中心教科室北京101300

减轻学生过重负担,提升教学质量,一直是义务教育阶段的工作目标。新中国成立以来,我国出台了一系列教育领域减负政策,并经历了以教育部下发首部教育减负政策《关于减轻中小学生过重负担的指示》为标志的起步时期,到将减负目标融入到课... 详细信息

减轻学生过重负担,提升教学质量,一直是义务教育阶段的工作目标。新中国成立以来,我国出台了一系列教育领域减负政策,并经历了以教育部下发首部教育减负政策《关于减轻中小学生过重负担的指示》为标志的起步时期,到将减负目标融入到课程改革目标任务中共同落实的发展时期,再到确立减负问题为社会问题,倡导各部门协同发力,全方位教育减负的新时期三个阶段。“双减”是党中央立足中华民族千秋伟业和学生全面发展的一项重大教育改革。“双减”政策摒弃过去的线性思维,不仅关注课时、作业、考试等问题,同时强调源头治理、系统治理、综合治理。北京市顺义区在认真分析“双减”政策颁布后北京市贯彻落实的总体情况特点后,聚焦学校教书育人主体作用发挥,从课堂教学质量提升、课后服务提质增效、课题深度研究、研究成果转化等方面,有效落实“双减”政策,践行立德树人初心使命的实践探索。

关键词：义务教育减负 “双减”政策教师素养立德树人

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石墨烯@ZSM-5复合材料的制备与表征

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化工设计通讯 2024年第7期50卷 106-108页

作者：苏凯民周景艳山东海科创新研究院有限公司山东东营257000 淄博职业学院山东淄博255000

为了制备一种氧化石墨烯与ZSM-5分子筛的复合材料,对氧化石墨烯(GO)表面进行磷酸盐改性得到GOPPN,将其与模板剂预混合,加入硅源得到前驱液,水热法反应过程中加入铝源,制备了ZSM-5包覆在GOPPN表面的复合材料(GOPPN@ZSM-5)。采用XRD、IR、... 详细信息

为了制备一种氧化石墨烯与ZSM-5分子筛的复合材料,对氧化石墨烯(GO)表面进行磷酸盐改性得到GOPPN,将其与模板剂预混合,加入硅源得到前驱液,水热法反应过程中加入铝源,制备了ZSM-5包覆在GOPPN表面的复合材料(GOPPN@ZSM-5)。采用XRD、IR、SEM、TG/TGA研究了石墨烯@ZSM-5复合材料的形貌与结构特征。测试表明,ZSM-5分子筛均匀地分布在氧化石墨烯片层表面,有效阻止了GO片层的相互堆积,经高温焙烧后,石墨烯@ZSM-5复合分子筛维持原有石墨烯的表面排布形态,表现为ZSM-5的晶型结构和形貌特征。这为石墨烯复合材料的制备提供了新思路。

关键词：氧化石墨烯 ZSM-5 磷酸盐

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英国数字人才战略及对北京的启示

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中国科技人才 2024年第2期 63-68页

作者：张惠娜周京艳北京市科学技术研究院科技智库中心北京100044

随着新一轮科技革命和产业革命的发展,发达国家纷纷将发展数字经济作为实现创新发展的重要动能。为促进数字经济的发展,北京出台了一系列政策以推动实现2035年建成全球数字经济标杆城市的战略目标,但北京的数字经济发展在关键技术攻关... 详细信息

随着新一轮科技革命和产业革命的发展,发达国家纷纷将发展数字经济作为实现创新发展的重要动能。为促进数字经济的发展,北京出台了一系列政策以推动实现2035年建成全球数字经济标杆城市的战略目标,但北京的数字经济发展在关键技术攻关、创新主体培育尤其是人才资源供给方面面临着诸多挑战和难题。英国数字之都建设过程中通过一系列政策的出台构筑了数字人才战略体系,积极推动了英国的数字经济发展。北京可借鉴英国的数字人才战略,围绕数字经济产业链需求积极布局人才链,建立数字经济“引、育、用”全链条人才战略体系,以数字人才战略引领北京的数字标杆城市建设。

关键词：数字人才数字经济数字标杆城市

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Small amount but big impact:Trace oxygen interstitially inserted PtCu alloys by microalloying for efficient oxygen reduction catalysis

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Nano Research 2024年第8期17卷 7001-7012页

作者： Qiheng Wang Zhiguo Chen jingyan Zhang Jingjun Liu Beijing Key Laboratory of Electrochemical Process and Technology for Materials Beijing 100029China Beijing University of Chemical Technology Beijing 100029China

The introduction of small size non-metal elements(e.g.,oxygen)into solid solution alloys may be a promising strategy for fabricating efficient Pt-based catalysts with high activity and stability toward oxygen reduction reaction(ORR).Herein,oxygen interstitially inserted PtCu(O-PtCu)alloys are firstly designed by an oxygen-microalloying strategy,through ultraviolet(UV)irradiation-assisted galvanic replacement in an aqueous solution containing H_(2)PtCl_(6)and Cu_(2)O nanowires as sacrificial *** obtained O-PtCu alloys feature a typical face-centered cubic(FCC)structure with majority Pt,Cu atoms as building bricks and trace interstitial oxygen(1.65 wt.%)existed in the octahedral sites surrounding Cu atoms,leading to a short-range disordered *** alloy reaches a recorded half-wave potential of 0.96 V(*** hydrogen electrode(RHE))and mass activity of 0.48 A·mgPt^(−1),much higher than those of commercial Pt/*** the accelerated degradation test(ADT),the mass activity lost only 4.2%after 10k cycles,while the commercial Pt/C lost 66.7%under the same *** with pure Pt and undoped PtCu alloy,the remarkably improved performance can be attributed to the lattice distortion and energy band reconstruction caused by the interstitial oxygen atoms in form of Cu–O ***,the stable Cu–O bonds delay the possible place exchange between surface Pt atoms and surface-adsorbed oxygen species,thereby hindering Pt dissolution,providing a new paradigm to address Pt degradation ***,the introduction of interstitial oxygen into Pt-based alloys may be a facile and smart strategy for the development of advanced Pt-based alloys electrocatalysts.

关键词： oxygen-microalloying platinum alloys octahedral interstices oxygen reduction reaction

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Designing unimolecular photoinitiator by installing NHPI esters along the TX backbone for acrylate photopolymerization and their applications in coatings and 3D printing

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Chinese Chemical Letters 2024年第7期35卷 417-421页

作者： Yi Zhu jingyan Zhang Yuchao Zhang Ying Chen Guanghui An Ren Liu Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China International Research Center for Photoresponsive Molecules and Materials Jiangnan UniversityWuxi 214122China School of Chemistry and Materials Science Heilongjiang UniversityHarbin 150080China Scientific Experiment Center Hangzhou Institute of Medicine(HIM)Chinese Academy of SciencesHangzhou 310022China

Developing efficient and long wavelength sensitive unimolecular photoinitiators(PIs)is still facing a great *** this work,a series of thioxanthone-based N-hydroxyphthalimide esters(TX-NHPIEs)were synthesized by installing NHPIEs along the TX backbone and *** investigated TX-NHPIEs have a 60 nm redshift and demonstrate sterling initiating efficiency for free radical photopolymerization(FRP)under LED@450 nm light irradiation compared with the commercialized isopropylthioxanthone(ITX).Real-time1Hnuclear magnetic resonance(1H NMR),electron spin resonance(ESR),decarboxylation and gas chromatograph-mass spectrometer(GC–MS)experiments and density functional theory(DFT)reveal that TX-NHPIEs can generate one alkyl radical and one N-centered iminyl radical,which can initiate FRP directly and indirectly,*** other words,TX-NHPIEs absorb one photon and can generate two active radicals,which break through the limitations of common ***-NHPIE-Cpe demonstrates the highest initiating efficiency,and its application in coatings and 3D printing was also studied,indicating TX-NHPIEs have broad potential applications in photopolymerization processes.

关键词： Photopolymerization Photoinitiator Energy transfer Thioxanthone N-Hydroxyphthalimide ester

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Advances in the study of epicanthus correction

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Chinese Journal of Plastic and Reconstructive Surgery 2024年第1期6卷 49-53页

作者： Xiuxia Wang jingyan Huang Rui Jin Xusong Luo Department of Plastic and Reconstructive Surgery Shanghai Ninth People's Hospital Shanghai Jiao Tong University School of Medicine

Epicanthus is a half-moon-shaped skin fold diagonally or vertically distributed in front of the medial canthus. In mild cases, it affects aesthetics, whereas in severe cases, it may obscure the patient's field of vision and even affect the functional development of the eyes in children. Until now, surgery has been the only corrective measure for epicanthus and a bewildering number of epicanthus-related surgical procedures have been reported; however,there is no standardized classification to guide inexperienced plastic surgeons in their study or case ***, this review aimed to classify epicanthus accordingly and introduce its corresponding and appropriate surgical treatment modalities.

关键词： Epicanthus Y-V advancement Z-plasty

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The determination of sedimentary environment and associated energy in deep-buried marine carbonates:insights from natural gamma ray spectrometry log

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Frontiers of Earth Science 2024年第1期18卷 204-218页

作者： jingyan LIU Qian CHANG Junlong ZHANG Hui CHAI Feng HE Yizan YANG Shiqiang XIA School of Energy Resources China University of Geosciences(Beijing)Beijing 100083China Exploration and Development Research Institute Daqing Oilfield CompanyPetroChinaDaqing 163712China China National Oil and Gas Exploration and Development Co. Ltd(CNODC)Beijing 100032China Beijing Research Institute of Uranium Geology Beijing 100029China College of Mining Engineering North China University of Science and TechnologyTangshan 063210China

It has always been challenging to determine the ancient sedimentary environment and associated energy in deep-buried marine *** energy represents the hydrodynamic conditions that existed when the carbonates were *** energy includes light and chemical energies in compounds and kinetic energy in currents and mass ***-buried marine carbonates deposited during the Ordovician depositional period in the eastern Tarim Basin result from a complex interplay of tectonics,sedimentation,and *** a result,determining the ancient sedimentary environment and associated energy is *** natural gamma-ray spectrometry(GRS)log(from 12 wells)is used in this paper to conduct studies on the sedimentary environment and associated energy in deep-buried marine *** findings show that the values of thorium(Th),uranium(U),potassium(K),and gamma-ray without uranium(KTh)in a natural GRS log can reveal lithological associations,mineral composition,diagenetic environment,stratigraphic water activity,and ancient climatic *** the Ordovician,quantitative analysis and determination of sedimentary environment energy are carried out using a comprehensive calculation of natural GRS log parameters in typical wells(penetrating through the Ordovician with cores and thin sections)of well GC4,well GC6,well GC7,and well *** results show that GRS log can determine different lithology associations in typical wells than a sieve residue ***,cores and thin sections can be used to validate the determination of lithology *** on the determination of lithology associations,the lithology associations that reflect the sedimentary environment and associated energy can be analyzed in a new ***,the sedimentary environment energy curve derived from a natural GRS log can reveal hydrodynamic fluctuations during depositional periods,which will aid in the discovery of carbonate reservoirs,establishing sequence stratigra

关键词： ancient sedimentary environment energy of sedimentary environment marine deep-buried carbonates natural GRS the Ordovician eastern Tarim Basin

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Chidamide plus prednisone,cyclophosphamide,and thalidomide for relapsed or refractory peripheral T-cell lymphoma:A multicenter phase II trial

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Chinese Medical Journal 2024年第13期137卷 1576-1582页

作者： Jinhua Liang Li Wang Xiaodong Wang Guohui Cui Jianfeng zhou Tongyao Xing Kaixin Du jingyan Xu Luqun Wang Rong Liang Biyun Chen Jian Cheng Haorui Shen Jianyong Li Wei Xu Department of Hematology The First Affiliated Hospital of Nanjing Medical UniversityJiangsu Province HospitalNanjingJiangsu 210029China Key Laboratory of Hematology of Nanjing Medical University NanjingJiangsu 210029China Collaborative Innovation Center for Cancer Personalized Medicine NanjingJiangsu 210029China Department of Hematology Sichuan Academy of Medical Sciences&Sichuan Provincial People’s HospitalSchool of Medicine of University of Electronic Science and Technology of ChinaChengduSichuan 610000China Department of Hematology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430022China Department of Hematology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430030China Department of Hematology Nanjing Drum Tower HospitalNanjing University Medical SchoolNanjingJiangsu 210008China Department of Hematology Qilu Hospital of Shandong UniversityJinanShandong 250000China Department of Hematology Xijing HospitalThe Fourth Military Medical UniversityXi’anShaanxi 710032China Department of Hematology Fujian Provincial HospitalFuzhouFujian 350001China Department of Hematology Zhongda HospitalMedical School of Southeast UniversityNanjingJiangsu 210009China

Background:Although the treatment of peripheral T-cell lymphoma(PTCL)has undergone advancements during the past several years,the response rate and long-term effects with respect to patients with PTCL remain unsatisfactory—particularly for relapsed or refractory(R/R)*** phase II trial was designed to explore the efficacy and safety of an all-oral regimen of chidamide plus prednisone,cyclophosphamide,and thalidomide(CPCT)for R/R PTCL patients who could not tolerate the standard chemotherapy for a variety of ***:We conducted a multicenter phase II clinical trial in which we combined chidamide(30 mg twice weekly)with prednisone(20 mg daily after breakfast),cyclophosphamide(50 mg daily after lunch),and thalidomide(100 mg daily at bedtime)(the CPCT regimen)for a total of fewer than 12 cycles as an induction-combined treatment period,and then applied chidamide as single-drug ***-five patients were ultimately enrolled from August 2016 to April 2021 with respect to Chinese patients at nine *** primary objective was to assess the overall response rate(ORR)after the treatment with ***:Of the 45 enrolled patients,the optimal ORR and complete response(CR)/CR unconfirmed(CRu)were 71.1%(32/45)and 28.9%(13/45),respectively,and after a median follow-up period of 56 months,the median progression-free survival(PFS)and overall survival(OS)were 8.5 months and 17.2 months,*** five-year PFS and OS rates were 21.2%(95%confidence interval[CI],7.9-34.5%)and 43.8%(95%CI,28.3-59.3%),*** most common adverse event was neutropenia(20/45,44.4%),but we observed no treatment-related ***:The all-oral CPCT regimen was an effective and safe regimen for R/R PTCL patients who could not tolerate standard chemotherapy for various *** Registration:***,NCT02879526.

关键词： Peripheral T-cell lymphoma Chidamide Prednisone Cyclophosphamide Thalidomide All-oral regimen

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