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Ti_(3)C_(2)T_(x)/SnO_(2)P–N heterostructure construction boosts room-temperature detecting formaldehyde

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Rare Metals 2024年第1期43卷 267-279页

作者： Yue Zhang Ming-Yue Wang Xiao-Guang san Yan-Bai Shen Guo-Sheng Wang Lei Zhang Dan Meng College of Chemical Engineering Shenyang University of Chemical TechnologyShenyang 110142China Institute for Superconducting and Electronic Materials(ISEM) Australian Institute for Innovative Materials(AIIM)University ofWollongongWollongongNSW2500Australia College of Resources and Civil Engineering Northeastern UniversityShenyang 110819China

Formaldehyde is a common atmospheric pollutant produced in industrial production and daily ***,the traditional semiconductor formaldehyde gas sensor cannot work at room temperature,which limits its practical ***,developing high-performance gas sensors for rapidly and accurately detecting formaldehyde at room temperature is an important *** this study,Ti_(3)C_(2)Tx/SnO_(2)heterostructures were constructed,which could selectively detect formaldehyde at room temperature with a response value of 29.16%(10×10^(-6)).In addition,the sensor shows a remarkable theoretical detection limit of 5.09×10^(-9)and good longterm *** functional theory(DFT)simulations reveal that SnO_(2)nano spheres provide the majority of adsorption sites that strongly interact with ***,Ti_(3)C_(2)T_(x)acting as a conductive layer facilitates the transfer of charge carriers so that they show a sensing response to formaldehyde at room ***,the formation of p-n heterostructures between SnO_(2)and Ti_(3)C_(2)T_(x)boosts the Schottky barrier at the interface,which is the critical factor in enhancing the sensing properties by turning the Schottky barrier upon introducing formaldehyde *** perspective is expected to provide instructive guidance for utilizing MXene/metal oxide nanocomposites to improve the gas sensing performance at room temperature.

关键词： Ti_(3)C_(2)T_(x)/SnO_(2)nanocomposites p-n heterostructures Formaldehyde sensing Room temperature DFT calculations

Microvascular alterations of the ocular surface and retina in connective tissue disease-related interstitial lung disease

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International Journal of Ophthalmology(English edition) 2024年第10期17卷 1869-1879页

作者： Li-Ming Chen Min Kang Jun-Yi Wang san-Hua Xu Cheng Chen Hong Wei Qian Ling Liang-Qi he Jie Zou Yi-Xin Wang Xu Chen Ping Ying Hui Huang Yi Shao Rui Wu Department of Rheumatology the First Affiliated Hospital of Nanchang UniversityNanchang 330006Jiangxi ProvinceChina Department of Ophthalmology the First Affiliated Hospital of Nanchang UniversityNanchang 330006Jiangxi ProvinceChina The First School of Clinical Medicine of Nanchang University Jiangxi Medical College of Nanchang UniversityNanchang 330000Jiangxi ProvinceChina School of Optometry and Vision Science Cardiff UniversityCardiffCF244HQWalesUK Ophthalmology Centre of Maastricht University Maastricht 6200MSLimburg ProvincieNetherlands Department of Ophthalmology Eye&ENT Hospital of Fudan UniversityShanghai 200030China

AIM:To examine the disparities in macular retinal vascular density between individuals with connective tissue disease-related interstitial lung disease(CTD-ILD)and healthy controls(HCs)by optical coherence tomography angiography(OCTA)and to investigate the changes in microvascular density in abnormal ***:For a retrospective case-control study,a total of 16 patients(32 eyes)diagnosed with CTD-ILD were selected as the ILD *** 16 healthy volunteers with 32 eyes,matched in terms of age and sex with the patients,were recruited as control *** macular retina’s superficial retinal layer(SRL)and deep retinal layer(DRL)were examined and scanned using OCTA in each individual *** densities of retinal microvascular(MIR),macrovascular(MAR),and total microvascular(TMI)were calculated and *** in retinal vascular density in the macular region were analyzed using three different segmentation methods:central annuli segmentation method(C1-C6),hemispheric segmentation method[uperior right(SR),superior left(SL),inferior left(IL),and inferior right(IR)],and Early Treatment Diabetic Retinopathy Study(ETDRS)methods[superior(S),inferior(I),left(L),and right(R)].The data were analyzed using Version 9.0 of GraphPad prism and Pearson ***:The OCTA data demonstrated a statistically significant difference(Phe two ***,in the SRL and DRL analyses,the ILD group exhibited significantly lower surface density of MIR and TMI compared to the HCs group(Phermore,using the hemispheric segmentation method,the ILD group showed notable reductions in SL,SR,and IL in the superficial retina(Phe deep retina(Phen employing the ETDRS method,the ILD group displayed substantial drops in superficial retinal S and I(Phe central annuli segmentation m

关键词： connective tissue disease‑related interstitial lung disease optical coherence tomography angiography microvessel density ocular surface retina

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鲜枣采后贮藏保鲜技术研究进展

保鲜与加工 2016年第5期16卷 134-138页

作者：沈雅珉何三宁南京信息工程大学语言文化学院江苏南京210044

从物理保鲜、化学保鲜、生物保鲜3个方面综述了我国鲜枣保鲜的研究现状,指出各种保鲜技术的原理、优缺点、存在的问题及解决方法,展望了鲜枣保鲜的研究方向,以期为我国的鲜枣产业发展提供理论指导。

关键词：鲜枣保鲜技术研究进展

Construction of MoP/MoS_(2) Core-shell Structure Electrocatalyst for Boosting Hydrogen Evolution Reaction

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Chemical Research in Chinese Universities 2024年第3期40卷 490-498页

作者： MENG Dan RAN Shunjiang GAO Ling ZHANG Yue san Xiaoguang ZHANG Lei LI Ruixiang JIN Quan College of Chemical Engineering Shenyang University of Chemical TechnologyShenyang 110142P.R.China Key Laboratory of Automobile Materials(Ministry of Education) School of Materials Science and EngineeringJilin UniversityChangchun 130022P.R.China

Hydrogen energy stands out as one of the most promising alternative energy sources due to its cleanliness and *** water splitting offers a sustainable pathway for hydrogen ***,the kinetic rate of the hydrogen evolution reaction(heR)is sluggish,emphasizing the critical need for stable and highly active electrocatalysts to facilitate heR and enhance reaction *** metal-based catalysts have garnered attention for their favorable catalytic activity in electrochemical hydrogen evolution in alkaline *** this investigation,flower-like nanorods of MoS_(2) were directly synthesized in situ on a nickel foam substrate,followed by the formation of MoP/MoS_(2)-nickel foam(NF)heterostructures through high-temperature phosphating in a tube furnace *** findings reveal that MoP/MoS_(2)-NF-450 exhibits outstanding electrocatalytic performance in an alkaline milieu,demonstrating a low overpotential(90 mV)and remarkable durability at a current density of 10 mA/cm^(2).Comprehensive analysis indicates that the introduction of phosphorus(P)atoms enhances the synergistic effect with MoS_(2),while the distinctive flower-like nanorod structure of MoS_(2) exposes more active ***,the interface between the MoP/MoS_(2) heterostructure and NF facilitates electron transfer during hydrogen evolution,thereby enhancing electrocatalytic *** design and synthesis of such catalysts offer a valuable approach for the development of high-performance hydrogen evolution electrocatalysts.

关键词： MoP/MoS_(2) Core-shell structure heterostructure Synergistic effect Hydrogen evolution reaction

Increased Oxygen Vacancies in CuO-ZnO Snowflake-like Composites Drive the Hydrogenation of CO_(2) to Methanol

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China Petroleum Processing & Petrochemical Technology 2024年第2期26卷 22-33页

作者： san Xiaoguang Wu Wanmeng Zhang Lei Meng Dan Chang Xiangshuang Tan Jianen Qi Jian College of Chemical Engineering Shenyang University of Chemical TechnologyShenyang 110142China Shenyang Xinghua Aviation Electrical Appliances Co. Ltd.Shenyang 110023China Department of Prosthodontics PLA 964 HospitalChangchun 130000China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China

Cu/ZnO is widely used in the hydrogenation of carbon dioxide (CO_(2)) to methanol (CH_(3)OH) to improve the lowconversion rate and selectivity generally observed. In this work, a series of In, Zr, Co, and Ni-doped CuO-ZnO catalysts wassynthesized via a hydrothermal method. By introducing a second metal element, the activity and dispersion of the activesites can be adjusted and the synergy between the metal and the carrier can be enhanced, forming an abundance of oxygenvacancies. Oxygen vacancies not only adsorb CO_(2) but also activate the intermediates in methanol synthesis, playing a keyrole in the entire reaction. Co3O4-CuO-ZnO had the best catalytic performance (a CO_(2) conversion rate of 9.17%;a CH_(3)OHselectivity of 92.77%). This study describes a typical strategy for multi-component doping to construct a catalyst with anabundance of oxygen vacancies, allowing more effective catalysis to synthesize CH_(3)OH from CO_(2).

关键词： CuO-ZnO catalyst CO_(2)hydrogenation to CH_(3)OH doping oxygen vacancy synergy

A novel fracture-cavity reservoir outcrop geological knowledge base construction method considering parameter collection and processing, mutual transformation of data-knowledge, application and update

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Petroleum Science 2024年第4期21卷 2184-2202页

作者： Qi-Qiang Ren Jin-Liang Gao Peng Zhu Meng-Ping Li Jian-Wei Feng Qiang Jin san Zhang Institute of Sedimentary Geology Chengdu University of Technology PetroChina Research Institute of Petroleum Exploration and Development School of Energy Chengdu University of Technology School of Resources and Geosciences China University of Mining and Technology School of Geosciences China University of Petroleum (East China) School of Geosciences Yangtze University

This study endeavors to formulate a comprehensive methodology for establishing a Geological Knowledge Base(GKB) tailored to fracture-cavity reservoir outcrops within the North Tarim Basin. The acquisition of quantitative geological parameters was accomplished through diverse means such as outcrop observations, thin section studies, unmanned aerial vehicle scanning, and high-resolution cameras. Subsequently, a three-dimensional digital outcrop model was generated, and the parameters were standardized. An assessment of traditional geological knowledge was conducted to delineate the knowledge framework, content, and system of the GKB. The basic parameter knowledge was extracted using multiscale fine characterization techniques, including core statistics, field observations, and microscopic thin section analysis. Key mechanism knowledge was identified by integrating trace elements from filling, isotope geochemical tests, and water-rock simulation experiments. Significant representational knowledge was then extracted by employing various methods such as multiple linear regression, neural network technology, and discriminant classification. Subsequently, an analogy study was performed on the karst fracture-cavity system(KFCS) in both outcrop and underground reservoir settings. The results underscored several key findings:(1) Utilization of a diverse range of techniques,including outcrop observations, core statistics, unmanned aerial vehicle scanning, high-resolution cameras, thin section analysis, and electron scanning imaging, enabled the acquisition and standardization of data. This facilitated effective management and integration of geological parameter data from multiple sources and scales.(2) The GKB for fracture-cavity reservoir outcrops, encompassing basic parameter knowledge, key mechanism knowledge, and significant representational knowledge, provides robust data support and systematic geological insights for the intricate and in-depth examination of the genetic

关键词： Geological knowledge base Karst fracture-cavity system Mutual transformation of data-knowledge Knowledge base content and application Tarim basin

新疆地区绵羊品种朊蛋白基因136、154和171位点的多态性

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遗传 2010年第11期32卷 1159-1165页

作者：陈芯贺三刚刘明军新疆畜牧科学院生物技术研究中心农业部草食家畜繁育生物技术重点开放实验室新疆维吾尔自治区动物生物技术重点实验室乌鲁木齐830000 新疆农业大学农学院乌鲁木齐830000

绵羊痒病是一种渐进性和致死性中枢神经系统疾病,绵羊朊蛋白基因(Prion protein gene,PRNP)多态性与痒病的易感或抗性有关,其中PRNP136位(V/A)、154位(H/R)和171位(H/Q/R)的基因多态性与该病发生最相关。为评价新疆地区主要绵羊品种对... 详细信息

绵羊痒病是一种渐进性和致死性中枢神经系统疾病,绵羊朊蛋白基因(Prion protein gene,PRNP)多态性与痒病的易感或抗性有关,其中PRNP136位(V/A)、154位(H/R)和171位(H/Q/R)的基因多态性与该病发生最相关。为评价新疆地区主要绵羊品种对痒病的易感性,文章对新疆地区10个绵羊品种(阿勒泰、巴士拜、巴音布鲁克、多浪、和田、策勒黑、中国美利奴、德国肉用美利奴、特克赛尔和萨福克羊)共746只个体PRNP基因的136位(V/A)、154位(H/R)和171位(H/Q/R)的遗传多态性进行分析,检测到了ARQ、ARR、ARH、ARK、VRQ、AHR、AHQ、AHH8种等位基因,其中ARQ和ARR等位基因存在于所有品种中,且ARQ在所有品种中的基因频率最高。ARH存在于除萨福克和德国肉用美利奴羊外的8个绵羊品种中。仅在新疆地方品种阿勒泰、巴音布鲁克、巴士拜和多浪羊中检测到ARK等位基因。而VRQ、AHR、AHQ和AHH4种等位基因只在中国美利奴羊上存在,且频率极低。在10个品种中共检测到了ARQ/ARQ、ARQ/ARK、ARR/ARR、ARH/ARH、ARQ/ARR、ARH/ARQ、ARH/ARR、ARK/ARK、ARH/ARK、ARQ/VRQ、ARQ/AHQ、ARQ/AHR和ARH/AHH13种基因型,其中中度易感的ARQ/ARQ基因型频率最高,而抗性最强的ARR/ARR基因型仅存在于巴音布鲁克、策勒黑、中国美利奴、特克赛尔和德国肉用美利奴羊,且频率较低。文章首次在中国美利奴羊上发现了易感性很强的VRQ/ARQ基因型。上述结果提示新疆的主要绵羊品种对痒病的抗性较弱。

关键词： PRNP多态性基因型痒病

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美国对外政策话语中的语义意藴案例探析

广东交通职业技术学院学报 2009年第3期8卷 101-104页

作者：陈鹤三广东金融学院广东广州510521

语言与文化总是密切相关的,离开了文化,语言的意义将无所依附。同一个词语在不同的文化语境中,其语义内涵并不完全一样,这无疑将给阅读和理解带来困难和障碍。文中将以"American Exceptionalism"、"Wake Up"和"Morality"作为案例,探析... 详细信息

语言与文化总是密切相关的,离开了文化,语言的意义将无所依附。同一个词语在不同的文化语境中,其语义内涵并不完全一样,这无疑将给阅读和理解带来困难和障碍。文中将以"American Exceptionalism"、"Wake Up"和"Morality"作为案例,探析它们在美国语言历史文化环境中的语义意藴,以便读者在理解美国对外政策话语时能够更好地理解美国对外政策的精神内涵。

关键词： American Exceptionalism wake up morality 语义意藴

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论历史事件词语语义在公共话语中的语言效应

长春理工大学学报（社会科学版） 2010年第4期23卷 102-103页

作者：陈鹤三广东金融学院外语系广东广州510521

历史事件词语的语义,蕴含和承载着涉事民族的社会文化心理,在现代网络传播条件下,其语义在传播流动中能够产生巨大的社会号召力和凝聚力,这股力量可以在正反两面影响公众人物的公共话语表述。

关键词：社会文化心理公共话语历史事件词语语言效应