检索结果-内蒙古大学图书馆

作者： Tao, Zhu Yandong, Wan Yan, fang Chunhui, Zhang xuwen, He Dongyao, Xu Xinqian, Shu School of Chemical and Environmental Engineering China University of Mining and Technology Beijing China

ISBN: (纸本)9781424450893

Non-thermal plasma (NTP) technology generated by dielectric barrier discharge with adsorption-enhanced γ-Al2O3was used to decompose volatile organic compounds (VOCs). The experimental results show the adsorption-enhanced NTP technology resulted in higher toluene removal and energy efficiencies and a better inhibition for ozone formation in the gas exhaust. The adsorption kinetics was studied and the removal amount of toluene was 25% or so through adsorption of γ-Al2O3. © 2011 IEEE.

关键词： Plasma applications

来源：评论

学校读者我要写书评

暂无评论

Using gastric juice lncRNA-ABHD11-AS1 as a novel type of biomarker in the screening of gastric cancer

引用

TUMOR BIOLOGY 2016年第1期37卷 1183-1188页

作者： Yang, Yunben Shao, Yongfu Zhu, Mengying Li, Qier Yang, fang Lu, xuwen Xu, Chunjing Xiao, Bingxiu Sun, Yanke Guo, Junming Ningbo Univ Sch Med Dept Biochem & Mol Biol Ningbo 315211 Zhejiang Peoples R China Ningbo Univ Sch Med Zhejiang Key Lab Pathophysiol Ningbo 315211 Zhejiang Peoples R China Ningbo Univ Sch Med Affiliated Hosp Dept Gastroenterol Ningbo 315211 Zhejiang Peoples R China Zhenhai Middle Sch Ningbo Peoples R China

Long noncoding RNAs (lncRNAs) play vital roles in tumorigenesis. However, the diagnostic values of most lncRNAs are largely unknown. To investigate whether gastric juice lncRNA-ABHD11-AS1 can be a potential biomarker in the screening of gastric cancer, 173 tissue samples and 130 gastric juice from benign lesion, gastric dysplasia, gastric premalignant lesions, and gastric cancer were collected. ABHD11-AS1 levels were detected by reverse transcription-polymerase chain reaction. Then, the relationships between ABHD11-AS1 levels and clinicopathological factors of patients with gastric cancer were investigated. The results showed that ABHD11-AS1 levels in gastric cancer tissues were significantly higher than those in other tissues. Its levels in gastric juice from gastric cancer patients were not only significantly higher than those from cases of normal mucosa or minimal gastritis, atrophic gastritis, and gastric ulcers but also associated with gender, tumor size, tumor stage, Lauren type, and blood carcinoembryonic antigen (CEA) levels. More importantly, when using gastric juice ABHD11-AS1 as a marker, the positive detection rate of early gastric cancer patients was reached to 71.4 %. Thanks to the special origin of gastric juice, these results indicate that gastric juice ABHD11-AS1 may be a potential biomarker in the screening of gastric cancer.

关键词： ABHD11-AS1 Gastric cancer Gastric juice Gene diagnosis Long noncoding RNA Tumor marker

来源：评论

学校读者我要写书评

暂无评论

Influences of Community Coalescence on the Assembly of Bacterial Communities of the Small-Scale Complex Aquatic System from the Perspective of Bacterial Transmission, Core Taxa, and Co-occurrence Patterns

引用

MICROBIAL ECOLOGY 2024年第1期87卷 145页

作者： Xu, Huimin Zhang, Yi Fan, Dingyue Meng, Shunlong Fan, Limin Song, Chao Qiu, Liping Li, Dandan fang, Longxiang Liu, Zhuping Bing, xuwen Chinese Acad Fishery Sci Freshwater Fisheries Res Ctr Wuxi 214081 Peoples R China Minist Agr & Rural Affairs Lab Qual & Safety Risk Assessment Aquat Prod Envir Wuxi 214081 Peoples R China Taihu Basin Author Minist Water Resource Water Conservancy Dev Res Ctr Shanghai 200438 Peoples R China Shanghai Ocean Univ Coll Fisheries & Life Sci Shanghai 201306 Peoples R China

Recirculating aquaculture and aquaponics are considered sustainable aquaculture models playing important roles in animal-derived protein supply. In these aquaculture systems, microorganisms are crucial for the system stability. The community coalescence by mixing substances and microorganisms from various microhabitats under hydraulic forces is important for shaping the bacterial communities in these small-scale complex systems. However, the influences of community coalescence on bacterial communities remain rarely revealed in these systems. In this study, aquaponics (APS) and recirculating aquaculture (RAS) systems were set up to explore the bacterial community coalescence across different microhabitats, including water, fish feces, biofilter biofilms, and plant rhizosphere environment. Our results showed that diversity and compositions varied across different microhabitats in both systems. However, bacterial transmissions across these microhabitats differed between systems. The core microbiome of the RAS and APS were formed under community coalescence with the highest contribution of bacterial taxa derived from the fish feces. Nevertheless, the plant rhizosphere bacterial community also contributed to the core microbiome of the APS. Furthermore, the core taxa showed a higher average degree than the other nodes in the bacterial community networks in all microhabitats except for the plant rhizosphere environment, implying the important roles of core taxa in maintaining these bacterial community networks. Our results provide new insights into the assembly of bacterial communities under community coalescence in the artificial aquatic ecosystems comprising complex microhabitats, which is vital for developing microbial solutions for regulating the microbial communities to improve system performance in the future.

关键词： Aquaponics Microhabitats Community coalescence Bacterial transmission Core taxa Co-occurrence network

来源：评论

学校读者我要写书评

暂无评论

岩浆-热液成矿系统中铁同位素地球化学研究现状

引用

矿床地质 2023年第6期42卷 1214-1228页

作者：王续文李宇轩安芳大陆动力学国家重点实验室西北大学地质学系陕西西安710069

铁元素是岩浆-热液成矿系统中参与成矿的重要金属元素之一,岩浆-热液矿床中富铁矿物(黄铁矿、磁铁矿、黄铜矿、磁黄铁矿、斑铜矿、毒砂、菱铁矿)的δ^(56)Fe值变化较大(-2.07‰~+1.58‰),指示铁同位素在岩浆演化、流体出溶和热液演化过... 详细信息

铁元素是岩浆-热液成矿系统中参与成矿的重要金属元素之一,岩浆-热液矿床中富铁矿物(黄铁矿、磁铁矿、黄铜矿、磁黄铁矿、斑铜矿、毒砂、菱铁矿)的δ^(56)Fe值变化较大(-2.07‰~+1.58‰),指示铁同位素在岩浆演化、流体出溶和热液演化过程中均存在明显的分馏,因此,在约束岩浆-热液成矿系统中成矿金属的迁移-富集-沉淀过程和示踪成矿物质来源方面具有巨大的应用潜力。通过整理和分析前人研究资料,文章总结了岩浆-热液成矿系统岩浆演化、流体出溶和热液演化过程中铁同位素地球化学行为的研究现状。岩浆演化过程中铁同位素会发生显著分馏,如部分熔融过程中,熔体相比残余固相富集重铁同位素;矿物分离结晶会引起残余熔体铁同位素组成的变化,主要受含Fe2+或Fe3+矿物结晶的影响,如磁铁矿分离结晶会导致残余熔体铁同位素组成变轻,总体反映岩浆氧化还原状态对铁同位素分馏的主要控制作用,因此,含矿岩体铁同位素组成及其变化可用于确定岩浆的氧化还原状态。流体出溶是含矿岩浆演化成为岩浆热液矿床的关键过程,出溶流体相对于母岩富集轻铁同位素,但实验研究表明出溶流体铁同位素组成可能受其中铁的迁移形式、与流体平衡的含Fe2+或Fe3+矿物的比例、相分离和流体混合等多种因素影响。热液演化过程中,含铁热液矿物沉淀会引起流体铁同位素组成的变化,磁铁矿沉淀会导致流体富集轻铁同位素,而含铁硫化物(如磁黄铁矿)沉淀则会使得流体逐渐富集重铁同位素,显示热液流体氧化还原状态对铁同位素分馏的控制作用。由于黄铜矿被认为可以有效记录流体的铁同位素组成,其铁同位素值被用于区分热液流体氧化还原状态。铁元素作为岩浆-热液成矿系统中直接参与成矿的元素,为直接示踪成矿物质来源提供了可能性,然而,岩浆演化、流体出溶和热液演化过程中铁同位素的明显分馏,导致利用铁同位素示踪成矿物质来源的特殊性。进一步明确流体出溶、热液演化等地质过程中的分馏规律,是利用铁同位素示踪成矿物质来源的关键。

关键词： Fe同位素岩浆-热液成矿系统地球化学行为应用研究现状

来源：评论

学校读者我要写书评

暂无评论

Growth of Robust Carbon Nitride Films by Double Crystallization with Exceptionally Boosted Electrochemiluminescence for Visual DNA Detection

引用

ADVANCED OPTICAL MATERIALS 2023年第6期11卷

作者： Hou, Yuhua fang, Yanfeng Zhou, Zhixin Hong, Qing Li, Wang Yang, Hong Wu, Kaiqing Xu, Yuan Cao, xuwen Han, Dan Liu, Songqin Shen, Yanfei Zhang, Yuanjian Southeast Univ Sch Chem & Chem Engn Jiangsu Engn Lab Smart Carbon Rich Mat & Device Jiangsu Prov Hitech Key Lab Biomed ResState Key L Nanjing 211189 Peoples R China Southeast Univ Med Sch Nanjing 210009 Peoples R China

Electrochemically generated chemiluminescence (ECL) has attracted significant interest over the past decades, ranging from fundamental studies on highly efficient electron-to-photon interconversion to practical bioassays. Nonetheless, the ECL efficiency (phi(ECL)) of most emitters is low, which significantly hampers further development. Herein, this work reports a highly robust carbon nitride film with unusually enhanced ECL efficiency (2256 times higher than that of the reference Ru(bpy)(3)Cl-2/K2S2O8). Double crystallization, which provides the primary interaction of carbon nitride with the substrate and subsequent growth, plays a crucial role in the preparation. The improved ECL efficiency is ascribed to little pinholes suppressing futile co-reagent reduction, maintenance of more orbit-delocalized heptazine subunits improving ECL kinetics, and high transparency avoiding self-absorption. As a potential application, an ultrasensitive visual DNA biosensor by the naked eye is further successfully developed with a linear detection range of 100 pm to 1 mu m and limit of detection of 27 pm (S/N = 3).

关键词： biosensors carbon nitrides electrochemiluminescence energy conversion mechanical properties

来源：评论

学校读者我要写书评

暂无评论

Property rights and misallocation: Evidence from land certification in China

引用

WORLD DEVELOPMENT 2021年 147卷 105632-105632页

作者： Gao, xuwen Shi, Xinjie fang, Shile Peking Univ HSBC Business Sch Shenzhen Guangdong Peoples R China Zhejiang Univ China Acad Rural Dev Sch Publ Affairs Hangzhou Zhejiang Peoples R China Zhejiang Gongshang Univ Sch Econ Hangzhou Zhejiang Peoples R China

Employing 2015 and 2017 CFD data, this paper studies how the new round of a land certification program that aims to provide secure land titles for farmers has affected factor reallocation and aggregate output in China. The main findings are that land certification results in well-defined and secure property rights and leads to land and labor reallocation to more efficient farms with positive aggregate effects. Our paper also provides direct evidence of the reallocation mechanism by showing that the reform increases renting-out by low-productivity farmers and renting-in by more productive farmers. Moreover, the reform changes the likelihood of households remaining in agriculture: low-productivity households are more likely to have migrants than high-productivity households. (C) 2021 Elsevier Ltd. All rights reserved.

关键词： Misallocation Property rights China

来源：评论

学校读者我要写书评

暂无评论

Adaptable graphitic C6N6-based copper single-atom catalyst for intelligent biosensing

引用

NATURE COMMUNICATIONS 2023年第1期14卷 1-11页

作者： Hong, Qing Yang, Hong fang, Yanfeng Li, Wang Zhu, Caixia Wang, Zhuang Liang, Sicheng Cao, xuwen Zhou, Zhixin Shen, Yanfei Liu, Songqin Zhang, Yuanjian Southeast Univ Sch Chem & Chem Engn Jiangsu Engn Lab Smart Carbon Rich Mat & Device Jiangsu Prov Hitech Key Lab Biomed Res Nanjing 211189 Peoples R China Southeast Univ Med Sch Nanjing 210009 Peoples R China

Self-adaptability is highly envisioned for artificial devices such as robots with chemical noses. For this goal, seeking catalysts with multiple and modulable reaction pathways is promising but generally hampered by inconsistent reaction conditions and negative internal interferences. Herein, we report an adaptable graphitic C6N6-based copper single-atom catalyst. It drives the basic oxidation of peroxidase substrates by a bound copper-oxo pathway, and undertakes a second gain reaction triggered by light via a free hydroxyl radical pathway. Such multiformity of reactive oxygen-related intermediates for the same oxidation reaction makes the reaction conditions capable to be the same. Moreover, the unique topological structure of CuSAC6N6 along with the specialized donor-pi-acceptor linker promotes intramolecular charge separation and migration, thus inhibiting negative interferences of the above two reaction pathways. As a result, a sound basic activity and a superb gain of up to 3.6 times under household lights are observed, superior to that of the controls, including peroxidase-like catalysts, photocatalysts, or their mixtures. CuSAC6N6 is further applied to a glucose biosensor, which can intelligently switch sensitivity and linear detection range in vitro. Catalysts with multiple and modulable reaction pathways are promising but generally hampered by inconsistent reaction conditions and negative internal interferences. Herein, the authors report an adaptable graphitic C6N6-based copper singleatom catalyst

关键词： Bioanalytical chemistry Biocatalysis Materials for energy and catalysis

来源：评论

学校读者我要写书评

暂无评论

非农就业、农机投资和农机服务利用

引用

南京农业大学学报（社会科学版） 2020年第1期20卷 139-149页

作者：方师乐史新杰高叙文浙江工商大学经济学院浙江杭州310018 浙江大学中国农村发展研究院浙江杭州310058

小农户如何与现代农业发展有机衔接是党的十九大提出的重要科学问题,其中小农户如何对接大农机是其中一个重要方面。首先建立了一个旨在解释农机在中国成为俱乐部商品的理论模型,随后利用2011-2014年全国农村固定观察点数据研究非农就... 详细信息

小农户如何与现代农业发展有机衔接是党的十九大提出的重要科学问题,其中小农户如何对接大农机是其中一个重要方面。首先建立了一个旨在解释农机在中国成为俱乐部商品的理论模型,随后利用2011-2014年全国农村固定观察点数据研究非农就业对农户农机使用行为的影响。随机效应面板Tobit模型的实证结果表明:无论是外地就业,还是本地非农就业,均对农户的农机直接投资产生负向影响,但增加了农户对农机服务的利用。从总体上来看,非农就业促进了农业机械化水平的提高。采用排除异常值干扰的面板Logit模型,使用解释变量的滞后项回归和考虑内生性的PSM-DID等一系列检验验证了基本结论的稳健性。在土地市场和农村劳动力市场缺失的双重约束下,农机化的发展重点应落脚于提升适合跨区作业的高端农机的供给能力,进一步发展农机服务市场。

关键词：非农就业农机化农机服务托宾模型

来源：评论

学校读者我要写书评

暂无评论

基础教育、职业培训与农民工外出收入——基于生命周期的视角

引用

财经研究 2021年第1期47卷 153-168页

作者：史新杰方师乐高叙文浙江大学中国农村发展研究院浙江杭州310058 浙江工商大学经济学院浙江杭州310018 北京大学汇丰商学院广东深圳518055

提高农民工收入是转型期我国经济社会工作的重要内容。文章使用全国农村固定观察点2011-2014年数据,采取PSM-DID等识别方法,在生命周期的视角下研究了基础教育和职业培训对于提升农民工外出收入的异质性影响。随后从就业方式、从事行业... 详细信息

提高农民工收入是转型期我国经济社会工作的重要内容。文章使用全国农村固定观察点2011-2014年数据,采取PSM-DID等识别方法,在生命周期的视角下研究了基础教育和职业培训对于提升农民工外出收入的异质性影响。随后从就业方式、从事行业和从业地点等维度进行了差异性甄别和机制性解释,并就两者如何影响收入不平等问题进行了讨论。研究发现:(1)由于现阶段农民工被锁定在低技能行业,相较于基础教育,职业培训对农民工外出收入产生了更大的正向影响,这不仅体现在短期的"即时效应",也表现为基于生命周期的"长期效应"。(2)这些影响在不同外出就业类型、从事行业以及从业地点均具有异质性。(3)基础教育和职业培训不仅能够提高农民工的收入,还能降低农村地区的收入不平等,并且职业培训的效用更大。文章对于通过提升人力资本增加农民工收入、缩小收入差距具有一定的政策启示。

关键词：基础教育职业培训农民工收入收入不平等

来源：评论

学校读者我要写书评

暂无评论

1,25-Dihydroxyvitamin D3 up-regulates IL-34 expression in SH-SY5Y neural cells

引用

INNATE IMMUNITY 2017年第7期23卷 584-591页

作者： Zhang, Dong Li, Miaomiao Dong, Yang Zhang, Xinhui Liu, Xingyun Chen, Zhangming Zhu, Yongji Wang, Huiming Liu, xuwen Zhu, Jialiang Shen, Yujun Korner, Heinrich Ying, Songcheng fang, Shengyun Shen, Yuxian Anhui Med Univ Sch Basic Med Sci Dept Immunol Hefei 230032 Anhui Peoples R China Anhui Med Univ Biopharmaceut Res Inst Hefei 230032 Anhui Peoples R China Menzies Inst Med Res Tasmania Hobart Tas Australia Anhui Med Univ Sch Pharm Hefei Anhui Peoples R China

Vitamin D supplementation is regarded as a novel approach to treat Alzheimer's disease, but the underlying mechanism remains elusive. The cytokine IL-34 provides strong neuroprotective and survival signals in brain injury and neurodegeneration and could be an immunological mediator for the vitamin D-induced protection. The aim of this study was to investigate whether human IL-34 is up-regulated in neuronal cells by the hormonally active form of vitamin D, 1,25-dihydroxyvitamin D3 [1,25(OH)(2)D-3]. We found that IL-34 was detectable in a variety of cell lines and its expression was strongly induced in SH-SY5Y neural cells in a dose- and time-dependent manner by 1,25(OH)(2)D-3 through the vitamin D receptor (VDR). Furthermore, we identified the core promoter of IL-34 gene and a VDR binding site (CGCCCT) that was required for 1,25(OH)(2)D-3-induced IL-34 expression. These findings suggest that the induction of IL-34 expression by 1,25(OH)(2)D-3 may constitute a mechanism that explains the protective function of vitamin D in Alzheimer's disease.

关键词： 1 25-Dihydroxyvitamin D3 Alzheimer disease expression IL-34 neuronal cell

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：