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A post-modification strategy to precisely construct dual-atom sites for oxygen reduction electrocatalysis

Journal of Energy Chemistry 2024年第3期90卷 511-517,I0012页

作者： Juan Wang Xinyan liu Chang-Xin Zhao yun-Wei Song Jia-Ning liu Xi-Yao Li Chen-Xi Bi Xin Wan Jianglan Shui Hong-Jie Peng Bo-Quan Li Jia-qi Huang School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Advanced Research Institute of Multidisciplinary Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Dual-atom catalysts(DACs) afford promising potential for oxygen reduction electrocatalysis due to their high atomic efficiency and high intrinsic ***,precise construction of dual-atom sites remains a *** this work,a post-modification strategy is proposed to precisely fabricate DACs for oxygen reduction ***,a secondary metal precursor is introduced to the primary single-atom sites to introduce direct metal-metal interaction,which ensures the formation of desired atom pair structure during the subsequent pyrolysis process and allows for successful construction of *** as-prepared FeCo-NC DAC exhibits superior oxygen reduction electrocatalytic activity with a half-wave potential of 0,91 V *** hydrogen ***-air batteries equipped with the FeCo-NC DAC demonstrate higher peak power density than those with the Pt/C *** importantly,this post-modification strategy is demonstrated universal to achieve a variety of dual-atom *** work presents an effective synthesis methodology for precise construction of catalytic materials and propels their applications in energy-related devices.

关键词： Dual-atom catalysts Electrocatalysis Oxygen reduction reaction Post-modification Zinc–air batteries

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投入占用产出模型透析

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经济理论与经济管理 2005年第5期25卷 11-16页

作者：刘起运中国人民大学国民经济管理系北京100872

在全面考察模型构造原理的基础上,通过分别对模型进行列向、行向的深入分析表明,投入产出模型的实质是等维局部闭模型,模型对最终产品具有挤出效应,对增加值具有溢出效应。

关键词：投入产出占用模型经济存量

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Differences in insomnia-related self-reported outcomes among elderly hospitalized patients

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World Journal of Psychiatry 2024年第5期14卷 686-694页

作者： Xia Ding Ling-Xia qi Dong-yun Sun Department of Gangzha General Medical Center The Affiliated Hospital of Nantong UniversityNantong 226000Jiangsu ProvinceChina Department of Anesthesiology and Surgery The Affiliated Hospital of Nantong UniversityNantong 226000Jiangsu ProvinceChina Department of Ophthalmic Surgery Room The Affiliated Hospital of Nantong UniversityNantong 226000Jiangsu ProvinceChina

Insomnia is among the most common sleep disorders *** in older adults is a social and public health *** affects the physical and mental health of elderly hospitalized patients and can aggravate or induce physical *** subjective feelings and providing reasonable and standardized care for elderly hospitalized patients with insomnia are urgent *** To explore the differences in self-reported outcomes associated with insomnia among elderly hospitalized *** One hundred patients admitted to the geriatric unit of our hospital between June 2021 and December 2021 were included in this ***-reported symptoms were assessed using the Athens Insomnia Scale(AIS),Generalized Anxiety Disorder Scale-7(GAD-7),Geriatric Depression Scale-15(GDS-15),Memorial University of Newfoundland Scale of Happiness(MUNSH),Barthel Index Evaluation(BI),Morse Fall Scale(MFS),Mini-Mental State Examination,and the Short Form 36 Health Survey Questionnaire(SF-36).Correlation coefficients were used to analyze the correlation between sleep quality and self-reported *** of insomnia was analyzed using Logistic regression *** Nineteen patients with AIS≥6 were included in the insomnia group,and the incidence of insomnia was 19%(19/100).The remaining 81 patients were assigned to the non-insomnia *** were significant differences between the two groups in the GDA-7,GDS-15,MUNSH,BI,MFS,and SF-36 items(P<0.05).Patients in the insomnia group were more likely to experience anxiety,depression,and other mental illnesses,as well as difficulties with everyday tasks and a greater risk of falling(P<0.05).Subjective well-being and quality of life were poorer in the insomnia group than in the control *** AIS scores positively correlated with the GAD-7,GDS-15,and MFS scores in elderly hospitalized patients with insomnia(P<0.05).Logistic regression analysis showed that GDS-15≥5 was an independent risk factor for ins

关键词： Elderly hospitalized patients Insomnia Self-reported outcomes Symptoms Subjective feelings Correlation

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Desert ecological control and ecological industrial construction: Practice and inspiration from China

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China Geology 2024年第3期7卷 596-600页

作者： Xue-zheng Gao Lu liu yun-tao Shang Fan-yu qi Development and Research Center China Geological SurveyMinistry of Natural ResourcesBeijing 100037China National Geological Archives of China Beijing 100037China China Construction Engineering Design&Research Institute Co. Ltd.Beijing 100037China

Desertification poses significant threats to the ecological security and sustainable economic and social development of countries worldwide. In China, existing desertified land primarily lies between 35°–50°N, covering arid and semi-arid regions and a total area of 1.688×106 km^(2), which represents 17.58%of the total territorial area of the country (Fig. 1).

关键词： Desert ecological primarily

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Development of antibody-drug conjugates in cancer:Overview and prospects

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Cancer Communications 2024年第1期44卷 3-22页

作者： Dan-yun Ruan Hao-Xiang Wu qi Meng Rui-Hua Xu Department of Clinical Research Sun Yat-sen University Cancer CenterState Key Laboratory of Oncology in South ChinaGuangdong Provincial Clinical Research Center for CancerSun Yat-sen UniversityGuangzhouGuangdongP.R.China Research Unit of Precision Diagnosis and Treatment for Gastrointestinal Cancer Chinese Academy of Medical SciencesGuangzhouGuangdongP.R.China Department of Medical Oncology Sun Yat-sen University Cancer CenterState Key Laboratory of Oncology in South ChinaGuangdong Provincial Clinical Research Center for CancerSun Yat-sen UniversityGuangzhouGuangdongP.R.China

In recent years,remarkable breakthroughs have been reported on antibody-drug conjugates(ADCs),with 15 ADCs successfully entering the market over the past *** substantial development has positioned ADCs as one of the fastest-growing domains in the realm of anticancer drugs,demonstrating their efficacy in treating awide array of ***,there is still an unmet clin-ical need forwider application,better efficacy,and fewer side effects of *** ADC generally comprises an antibody,a linker and a payload,and the combina-tion has profound effects on drug structure,pharmacokinetic profile and ***,optimization of the key components provides an opportunity to develop ADCs with higher potency and fewer side *** this review,we comprehen-sively reviewed the current development and the prospects of ADC,provided an analysis of marketed ADCs and the ongoing pipelines globally as well as in China,highlighted several ADC platforms and technologies specific to different pharmaceutical enterprises and biotech companies,and also discussed the new related technologies,possibility of next-generation ADCs and the directions of clinical research.

关键词： companies breakthrough payload

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Intrinsically asymmetric atomic character regulates piezoelectricity in two-dimensional materials

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Frontiers of physics 2024年第3期19卷 153-162页

作者： yun-qin Li qi-Wen He Dai-Song Tang Xiao Shang Xiao-Chun Wang School of Physics Science and Information Technology Liaocheng UniversityLiaocheng 252000China Key Laboratory of Polar Materials and Devices Ministry of EducationDepartment of ElectronicsEast China Normal UniversityShanghai 200241China Institute of Atomic and Molecular Physics Jilin UniversityChangchun 130012China

Decreasing of layer thickness causes the decrease of polarization until it disappears due to the existence of depolarization ***,the search for strong piezoelectric materials is highly desirable for multifunctional ultra-thin piezoelectric ***,we propose a common strategy for achieving strong piezoelectric materials through the electronic asymmetry induced by the intrinsically asymmetric atomic character of different chalcogen ***,in the tetrahedral lattice structures,for example,M4X3Y3(M=Pd/Ni,X/Y=S,Se or Te,X≠Y)monolayers are proved to display excellent out-of-plane ***4Se3Te3 possesses the largest piezoelectric coefficient d33 of 61.57 pm/V,which is much larger than that of most 2D *** the electronic asymmetry further increases the out-of-plane piezoelectricity of Janus M4X3Y3 ***,the out-of-plane piezoelectricity is positively correlated with the ratio of electronegativity difference(Red)and the electric dipole moment(P).This work provides alternative materials for energy harvesting nano-devices or self-energized wearable devices,and supplies a valuable guideline for predicting 2D materials with strong out-of-plane piezoelectricity.

关键词： piezoelectricity intrinsically asymmetric atomic character ratio of electronegativity difference electric dipole moment first-principles calculations

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One-step cell biomanufacturing platform:porous gelatin microcarrier beads promote human embryonic stem cell-derived midbrain dopaminergic progenitor cell differentiation in vitro and survival after transplantation in vivo

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Neural Regeneration Research 2024年第2期19卷 458-464页

作者： Lin Feng Da Li Yao Tian Chengshun Zhao yun Sun Xiaolong Kou Jun Wu liu Wang qi Gu Wei Li Jie Hao Baoyang Hu Yukai Wang State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijingChina Institute for Stem Cell and Regenerative Medicine Chinese Academy of SciencesBeijingChina National Stem Cell Resource Center Chinese Academy of SciencesBeijingChina Savaid Medical School University of Chinese Academy of SciencesBeijingChina Beijing Institute for Stem Cell and Regenerative Medicine BeijingChina State Key Laboratory of Membrane Biology Institute of ZoologyChinese Academy of SciencesBeijingChina

Numerous studies have shown that cell replacement therapy can replenish lost cells and rebuild neural circuitry in animal models of Parkinson’s *** of midbrain dopaminergic progenitor cells is a promising treatment for Parkinson’s ***,transplanted cells can be injured by mechanical damage during handling and by changes in the transplantation ***,we developed a one-step biomanufacturing platform that uses small-aperture gelatin microcarriers to produce beads carrying midbrain dopaminergic progenitor *** beads allow midbrain dopaminergic progenitor cell differentiation and cryopreservation without digestion,effectively maintaining axonal integrity in ***,midbrain dopaminergic progenitor cell bead grafts showed increased survival and only mild immunoreactivity in vivo compared with suspended midbrain dopaminergic progenitor cell ***,our findings show that these midbrain dopaminergic progenitor cell beads enhance the effectiveness of neuronal cell transplantation.

关键词： axonal integrity cell cryopreservation cellular environment cellular niche cell replacement therapy dopaminergic progenitors human pluripotent stem cell mechanical damage neuronal cell delivery Parkinson’s disease small-aperture gelatin microcarriers

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合成大比表面γ-Mo_2N的新方法

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无机化学学报 1999年第4期15卷 541-544页

作者：柳云骐刘晨光阙国和石油大学炼制系

大比表面的γ－Ｍｏ２Ｎ在烃类加氢反应中有与Ｒｕ、Ｐｄ和Ｐｔ等贵金属催化剂相当的催化活性及高的加氢脱硫、脱氮选择性，引起催化界的极大关注，可望成为取代硫化钼系列催化剂的催化新材料［１］。研究表明这类催化剂的催化活性与其... 详细信息

大比表面的γ－Ｍｏ２Ｎ在烃类加氢反应中有与Ｒｕ、Ｐｄ和Ｐｔ等贵金属催化剂相当的催化活性及高的加氢脱硫、脱氮选择性，引起催化界的极大关注，可望成为取代硫化钼系列催化剂的催化新材料［１］。研究表明这类催化剂的催化活性与其比表面密切相关。目前，高比表面的γ...

关键词：一氮化二钼氮化钼高比表面合成

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溶胶-凝胶法合成硅溶胶包覆型均分散纳米β分子筛

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无机化学学报 2008年第11期24卷 1846-1851页

作者：冯锡兰柳云骐刘晨光中国石油大学(华东) 重质油国家重点实验室CNPC催化重点实验室青岛266555

在系统考察铝源、反应体系硅铝比、钠离子、反应温度等对分子筛粒度影响的基础上,优化合成条件合成出了粒径为100nm左右的β分子筛。利用XRD和TEM对所合成样品进行了表征。采用溶胶凝胶法研究了硅溶胶包覆的均分散纳米β分子筛复合材料... 详细信息

在系统考察铝源、反应体系硅铝比、钠离子、反应温度等对分子筛粒度影响的基础上,优化合成条件合成出了粒径为100nm左右的β分子筛。利用XRD和TEM对所合成样品进行了表征。采用溶胶凝胶法研究了硅溶胶包覆的均分散纳米β分子筛复合材料的合成,结果表明合成产物为纳米β分子筛均匀分散于硅溶胶基质中的微孔-介孔双孔复合材料。

关键词：溶胶-凝胶法 β分子筛复合材料

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Prognostic Nutritional Index Associates with the Severity of Silicosis:A Study from a Tertiary Class A Prevention and Treatment Institute for Occupational Diseases in China

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Biomedical and Environmental Sciences 2024年第1期37卷 122-126页

作者： HE La Gu LIANG yun Lai YANG Lu qi YUAN Hua Min Medical laboratory Department Hunan Prevention and Treatment Institute for Occupational DiseasesChangsha 410000HunanChina Laboratory Medicine Department Xiangya HospitalCentral South UniversityChangsha 410013HunanChina

Pneumoconiosis is a group of heterogeneous fibrotic lung diseases caused by inorganic mineral dust and includes coal workers’pneumoconiosis and *** involves diffuse or nodular interstitial pulmonary fibrosis caused by exposure to asbestos or silica *** is thought to have the highest number of silicosis cases,with 6,000 new cases reported annually^([1]).Currently,the clinical diagnosis and monitoring of silicosis relies mainly on a history of occupational exposure and radiological abnormalities^([2]).Therefore,determining further indicators is crucial to reflect the severity of silicosis.

关键词： diagnosis lung diseases

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