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1Heavy metals in rice and garden vegetables and their potential health risks to inhabitants in the vicinity of an industrial zone in Jiangsu, China显示文摘Contamination of soil and agricultural products by heavy metals resulting from rapid industrial development has caused major concern. In this study, we investigated heavy metal (Cu, Zn, Pb, Cr, Hg and Cd) concentrations in rice and garden vegetables, as well as in cultivated soils, in a rural-industrial developed region in southern Jiangsu, China, and estimated the potential health risks of metals to the inhabitants via consumption of locally produced rice and garden vegetables. A questionnaire-based survey on dietary consumption rates of foodstuffs showed that rice and vegetables accounted for 64% of total foodstuffs consumed, and over 60% of rice and vegetables were grown in the local region. Average concentrations of Cr, Cu, Zn, Cd, Hg and Pb were 0.75, 2.64, 12.00, 0.014, 0.006 and 0.054 mg/kg dw (dry weight) in rice and were 0.67, 1.18, 4.34, 0.011, 0.002 and 0.058 mg/kg fw (fresh weight) in garden vegetables, respectively. These values were all below the maximum allowable concentration in food in China except for Cr in vegetables. Leafy vegetables had higher metal concentrations than solanaceae vegetables. Average daily intake of Cr, Cu, Zn, Cd, Hg and Pb through the consumption of rice and garden vegetables were 5.66, 16.90, 74.21, 0.10, 0.04 and 0.43 μg/(kg·day), respectively. Although Hazard Quotient values of individual metals were all lower than 1, when all six metal intakes via self-planted rice and garden vegetables were combined, the Hazard Index value was close to 1. Potential health risks from exposure to heavy metals in self-planted rice and garden vegetables need more attention.Hongbin Cao Jianjiang Chen Jun Zhang Hui Zhang Li Qiao Yi Men 2010Journal of Environmental Sciences2010,22,11:61
2Interfacial mechanisms of heterogeneous Fenton reactions catalyzed by iron-based materials: A review显示文摘The heterogeneous Fenton reaction can generate highly reactive hydroxyl radicals(·OH)from reactions between recyclable solid catalysts and H_2O_2 at acidic or even circumneutral pH.Hence,it can effectively oxidize refractory organics in water or soils and has become a promising environmentally friendly treatment technology.Due to the complex reaction system,the mechanism behind heterogeneous Fenton reactions remains unresolved but fascinating,and is crucial for understanding Fenton chemistry and the development and application of efficient heterogeneous Fenton technologies.Iron-based materials usually possess high catalytic activity,low cost,negligible toxicity and easy recovery,and are a superior type of heterogeneous Fenton catalysts.Therefore,this article reviews the fundamental but important interfacial mechanisms of heterogeneous Fenton reactions catalyzed by iron-based materials..OH,hydroperoxyl radicals/superoxide anions(HO_2./O_2^-.)and high-valent iron are the three main types of reactive oxygen species(ROS),with different oxidation reactivity and selectivity.Based on the mechanisms of ROS generation,the interfacial mechanisms of heterogeneous Fenton systems can be classified as the homogeneous Fenton mechanism induced by surface-leached iron,the heterogeneous catalysis mechanism,and the heterogeneous reaction-induced homogeneous mechanism.Different heterogeneous Fenton systems catalyzed by characteristic iron-based materials are comprehensively reviewed.Finally,related future research directions are also suggested.Jie He Xiaofang Yang Bin Men Dongsheng Wang 2016Journal of Environmental Sciences2016,28,1:36
3Expression and significance of proapoptotic gene Bax in gastric carcinoma显示文摘INTRODUCTIONRecentinvestigationshavedemonstratedthatapoptosisplaysasignificantroleinthepathogenesisoftumors[1,2].Emphasishas...LIU Hai Feng, LIU Wei Wen, FANG Dian Chun and MEN Rong Pu 1999World Journal of Gastroenterology1999,5,1:32
4Expression of bcl-2 protein in gastric carcinoma and its significance显示文摘Expressionofbcl2proteiningastriccarcinomaanditssignificanceLIUHaiFeng,LIUWeiWen,FANGDianChunandMENRongPuSubjectheadings...LIU Hai Feng, LIU Wei Wen, FANG Dian Chun and MEN Rong Pu 1998World Journal of Gastroenterology1998,4,3:23
5Research and progress of Beidou satellite navigation system显示文摘The paper gives a brief review of the development course and strategic planning of Beidou satellite navigation system,and introduces its construction progress,with emphasis on the research progress of some key technologies of Beidou,including navigation constellation design,navigation signal structure and performance,compatibility and interoperability,precise orbit determination,navigation and precise positioning.The main problems and challenges of Beidou are described.SUN FuPing LIU Shuai ZHU XinHui MEN BaoHong 2012Science China(Information Sciences)2012,55,12:20
6An ecological hydraulic radius approach to estimate the instream ecological water requirement显示文摘这篇散文定义 ecdogical 流动速度以及生态的水力的半径的概念( EP 并且建议认为两个是水路 infoimation 的生态的水力的半径 apprcch ( EPA )(包括水力的半径,粗糙系数和水力的 adient )并且为某些 ecciogical 的维护的要求的 stresrn 速度 necesssry 都一起工作。EHEA 的关键 porameter 是修理水路代表性的相应于 EHR,在抛物线之间的关系由塑造了 cioss 部分的流动区域和水力的半径的流动区域被推出。EHRA 不仅为足够的鱼 spaing 移植满足流动速度的要求,而且对在有另外的生态的问题的问候的 ecdogical 流动适用(例如计算在里面为搬运沉积并且为污染 self-puHfication 的流流动要求,等等) 。这篇散文照亮了作为一个例子在 Yalong 河的 Niqu 分支拿 Zhuba Hydrologyical 车站水路的生态的水要求的评价的计算过程。另外,我们把 EHRA 与 Tennant apprcch 作比较。生态的水要求由 EHEA 计算了的 Zhuba 水文学车站躺在最小和有利的生态的水要求之间的结果表演由 Tennant 途径计算了。这由于事实生态的流动速度(例如鱼 spaing miration 流动,速度被考虑,生产对实际状况适用的结果。LIU Changming MEN Baohui 2007Progress in Natural Science:Materials International2007,17,3:20
7Association of SelS mRNA expression in omental adipose tissue with Homa-IR and serum amyloid A in patients with type 2 diabetes mellitus显示文摘DU Jian-ling SUN Chang-kai LU Bo MEN Li-li YAO Jun-jie AN Li-jia SONG Gui-rong 2008Chinese Medical Journal2008,,13:20
8Ferroptosis is essential for diabetic cardiomyopathy and is prevented by sulforaphane via AMPK/NRF2 pathways显示文摘Herein,we define the role of ferroptosis in the pathogenesis of diabetic cardiomyopathy(DCM)by examining the expression of key regulators of ferroptosis in mice with DCM and a new ex vivo DCM model.Advanced glycation end-products(AGEs),an important pathogenic factor of DCM,were found to induce ferroptosis in engineered cardiac tissues(ECTs),as reflected through increased levels of Ptgs2 and lipid peroxides and decreased ferritin and SLC7 A11 levels.Typical morphological changes of ferroptosis in cardiomyocytes were observed using transmission electron microscopy.Inhibition of ferroptosis with ferrostatin-1 and deferoxamine prevented AGE-induced ECT remodeling and dysfunction.Ferroptosis was also evidenced in the heart of type 2 diabetic mice with DCM.Inhibition of ferroptosis by liproxstatin-1 prevented the development of diastolic dysfunction at 3 months after the onset of diabetes.Nuclear factor erythroid 2-related factor 2(NRF2)activated by sulforaphane inhibited cardiac cell ferroptosis in both AGE-treated ECTs and hearts of DCM mice by upregulating ferritin and SLC7 A11 levels.The protective effect of sulforaphane on ferroptosis was AMP-activated protein kinase(AMPK)-dependent.These findings suggest that ferroptosis plays an essential role in the pathogenesis of DCM;sulforaphane prevents ferroptosis and associated pathogenesis via AMPK-mediated NRF2 activation.This suggests a feasible therapeutic approach with sulforaphane to clinically prevent ferroptosis and DCM.Xiang Wang Xinxin Chen Wenqian Zhou Hongbo Men Terigen Bao Yike Sun Quanwei Wang Yi Tan Bradley B.Keller Qian Tong Yang Zheng Lu Cai 2022Acta Pharmaceutica Sinica B2022,12,2:20
9Tissue clearing of both hard and soft tissue organs with the PEGASOS method显示文摘织物空地技术由转织物在 3 尺寸(3-D ) 启用不透明的机关和纸巾的可视化透明。当前的组织空地方法被能与每个单个协议被清除的纸巾的有限类型限制,它不可避免地导致了存在在整个身体或身体部分成像以内盲点。包括骨头和牙齿的难纸巾仍然是要清除的最困难的机关。另外,内长的荧光的损失为基于溶剂的空地方法仍然是一颗主要担心。这里,我们发展了聚乙烯乙二醇(木钉) 联系了溶剂系统(PEGASOS ) ,它将近显示了纸巾的所有类型透明、保存的内长的荧光。骨头和牙齿能被转在变清以后将近不可见。PEGASOS 方法转了透明的整个成年老鼠身体,我们对一个成年老鼠头骨头,牙齿,大脑,肌肉,和其它填写了的图象有能力没有盲目区域的纸巾。难织物透明性使我们能重建在 3-D 的未经触动的上颚,牙齿,腿节,或膝关节。另外,我们在长距离上在亚 cellular 分辨率并且到踪迹个人神经原和轴突管理了未经触动的鼠标大脑到图象。我们也通过 vertebrae 直接设想了背面的根中心。最后,我们在长骨头的髓空间以内在 3-D 揭示了神经网络的分发模式。这些结果建议 PEGASOS 方法是为一般生物医学的研究的一个有用工具。Dian Jing Shiwen Zhang Wenjing Luo Xiaofei Gao Yi Men Chi Ma Xiaohua Liu Yating Yi Abhijit Bugde Bo O. Zhou Zhihe Zhao Quan Yuan Jian Q. Feng Liang Gao Woo-Ping Ge Hu Zhao 2018Cell Research2018,28,8:18
10Tiny YOLO Optimization Oriented Bus Passenger Object Detection显示文摘The real-time collection of bus passenger object detection is an essential part of developing a smart bus system.The difficulty of object detection mainly lies in the objective factors,such as:clothing,hair style and accessories,light,etc.Traditional object detection met hods with the arti ficial feature ext rac tion suffers from insufficien t st reng th in expression,generalization,and recogni tion rate.The objec t detection met hod based on deep learning mainly uses the convol utio nal neural net work in deep learning to learn features from a large set of data.The learned features can describe the rich infbrmation inherent in the data,and improve the expression ability of the features as well as the recognition accuracy.Due to too many parameters of the Convolutional neural network(CNN)model,the amount of calculation is too large to be opera ted on the vehicle terminal.To reduce calculation burden and improve the operation speed,we employs the depthwise separable convolution method to optimize the convolutional layer of tiny YOLO net work model.It decomposes a complete convolution operation into depthwise convolution and pointwise convolution,thus reducing the parameter amount of the CNN and improving the operation speed.The experiment results reveal that the speed of bus passenger object detection detected by our improved model is 4 times faster than the previous one but with the nearly same detection accuracy.ZHANG Shuo WU Yanxia MEN Chaoguang LI Xiaosong 2020Chinese Journal of Electronics2020,29,1:15
11High precision in-situ Pb isotopic analysis of sulfide minerals by femtosecond laser ablation multi-collector inductively coupled plasma mass spectrometry显示文摘An in-situ microanalysis of Pb isotopic compositions in sulfide minerals is carried out by using femtosecond laser-ablation multi-collector inductively coupled plasma mass spectrometry(fs LA-MC-ICP-MS).High-temperature-activated carbon was used to filter Hg contained in the carrier gas,which reduced the Hg background signal by 48%and also lowered the detection limit of the analysis.Fractionation and mass discrimination effects existing in the ICP-MS analytical processes were corrected using an internal reference Tl in conjunction with an external reference NIST SRM 610.The proposed method was used to analyze the Pb isotopic compositions of chalcopyrite,pyrite,and sphalerite from the Dulong Sn-Zn-In polymetallic ore district.The results showed that in this ore district,the sulfide minerals and different grains of the same sulfide mineral show a large variation in Pb content up to 1000-fold.The studied pyrites show relatively higher Pb contents and homogeneous Pb isotopic compositions,whereas the sphalerites have low Pb contents but most variable Pb isotopic compositions.It is suggested that the large variation of Pb isotopic composition may reflect a late hydrothermal superimposition on the primary sulfide formation.In addition,radiogenic Pb accumulated by radioactive decay of trace amounts of U over time in the host minerals may also be one of the causes for the large variation range of Pb content and Pb isotopic composition of those low-Pb sphalerites.Chalcopyrite and sphalerite grains with Pb content greater than 10 ppm presented a consistent Pb isotopic distribution,whereas all the sulfide grains with Pb content greater than 100 ppm had consistent Pb isotopic composition within 2s measurement uncertainties.The in-situ analysis of Pb isotopic composition agreed well with the results obtained by conventional chemical methods within2s measurement uncertainties,indicating that the data obtained by fs LA-MC-ICP-MS are reliable.Additionally,this study indicates that the Pb isotopic composition could truthfully record the source of ore-forming minerals only for sulfide minerals with high Pb content.On the contrary,the Pb isotopic composition of low-Pb sulfide minerals may be affected by trace amounts of U in the host minerals that may lead to a highly radiogenic Pb isotope ratio.Alternatively,it is also possible that late fluid metasomatic overprinting may alter the Pb isotopic compositions.YUAN HongLin YIN Cong LIU Xu CHEN KaiYun BAO ZhiAn ZONG ChunLei DAI MenNing LAI ShaoCong WANG Rong JIANG ShaoYong 2015Science China Earth Sciences2015,58,10:14
12Fate of Urea Nitrogen Applied to Rape Grown on a Red Soil and Efficiency of Urea in Raising Rape Yield显示文摘FateofUreaNitrogenAppliedtoRapeGrownonaRedSoilandEfficiencyofUreainRaisingRapeYieldCAIGUI-XIN;PENGGUANG-HAO;WUYI-WEI;MAMAO-TO...CAI GUI-XIN PENG GUANG-HAO WU YI-WEI MA MAO-TONG GAN SHOU-WEN and MEN CI-FU(Institute of Soil Science, Academia Sinica, Nanjing 210008 ( China))(Zhejiang Academy of Agricultural Sciences, Hangzhou 310021 ( China))(Chinese Academy of Agricultual Scie 1995Pedosphere1995,5,2:13
13Relationship between heavy metals and dissolved organic matter released from sediment by bioturbation/bioirrigation显示文摘Organic matter(OM) is an important component of sediment. Bioturbation/bioirrigation can remobilize OM and heavy metals that were previously buried in the sediment. The remobilization of buried organic matter, thallium(Tl), cadmium(Cd), copper(Cu) and zinc(Zn) from sediment was studied in a laboratory experiment with three organisms: tubificid,chironomid larvae and loach. Results showed that bioturbation/bioirrigation promoted the release of dissolved organic matter(DOM) and dissolved Tl, Cd, Cu and Zn, but only dissolved Zn concentrations decreased with exposure time in overlying water. The presence of organisms altered the compositions of DOM released from sediment,considerably increasing the percentage of fulvic acid-like materials(FA) and humic acidlike materials(HA). In addition, bioturbation/bioirrigation accelerated the growth and reproduction of bacteria to enhance the proportion of soluble microbial byproduct-like materials(SMP). The DOM was divided into five regions in the three-dimensional excitation emission matrix(3 D-EEM), and each part had different correlation with the dissolved heavy metal concentrations. Dissolved Cu had the best correlation with each of the DOM compositions, indicating that Cu in the sediment was in the organic-bound form.Furthermore, the organism type and heavy metal characteristics both played a role in influencing the remobilization of heavy metal.Yi He Bin Men Xiaofang Yang Yaxuan Li Hui Xu Dongsheng Wang 2019Journal of Environmental Sciences2019,31,1:12
14Photocatalytic CO2 reduction highly enhanced by oxygen vacancies on Pt-nanoparticle-dispersed gallium oxide显示文摘催化剂为解决精力和环境危机正在答应的 metal-oxide-based 上的 Photocatalytic 公司 2 减小由人类面对了。氧空缺(V 金属氧化物上的 o ) 被期望是在 metal-oxide-based 催化剂上影响 photocatalytic 公司 2 减小的效率的一个关键因素。然而,迄今为止的问题 V o 影响 photocatalytic 公司 2 减小仍然是未答复的。此处,我们报导那,在 V 与磅 nanoparticles 涂的 o -rich 镓氧化物( V o -rich Pt/Ga 2 O 3),公司2 photocatalytically 被归结为公司,吗与高度提高的公司进化评价( 21.0 摩尔湥??剏??椠楮楴瑡癩?瀠潲楶敤?楨桧爭獥汯瑵潩?汣浩瑡?楳畭慬楴湯?潦?桴?潤慭湩挠癯牥湩?慅瑳?楳?吠楨?瑳摵?湡瑬?瑬吗??Yun-Xiang Pan Zheng-Qing Sun Huai-Ping Cong Yu-Long Men Sen Xin Jie Song Shu-Hong Yu 2016Nano Research2016,9,6:12
15Preparation and coking properties of coal maceral concentrates显示文摘The concentrates with different maceral contents were obtained from Kailuan coking coals with different coal ranks(Ro;ranvarying from 0.88%to 1.73%)by float–sink separation in lab.Then these concentrates were characterized by proximate analysis,ultimate analysis,petrography analysis and coking index determination.The results show that the vitrinite is characterized as nature of lower carbon content,higher hydrogen content,higher volatile matter and stronger caking property compared to inertinite.The relationships between variation rate of volatile matter and maximum volatile matter and coal ranks are identified,and a linear model is developed for fast determination of the maceral contents.Compared to inertinite-rich concentrate,the blending ratio of vitrinite-rich concentrate is increased by 13%,which is considered to be a potential technique based on maceral separation for expanding the coking coal resources.Zhang Lei Liu Wenli Men Dongpo 2014International Journal of Mining Science and Technology2014,24,1:12
16Non-viral and viral delivery systems for CRISPR-Cas9 technology in the biomedical field显示文摘The clustered regularly interspaced short palindromic repeats(CRISPR)-associated protein 9(CRISPR-Cas9) system provides a novel genome editing technology that can precisely target a genomic site to disrupt or repair a specific gene. Some CRISPR-Cas9 systems from different bacteria or artificial variants have been discovered or constructed by biologists, and Cas9 nucleases and single guide RNAs(sgRNA) are the major components of the CRISPR-Cas9 system. These Cas9 systems have been extensively applied for identifying therapeutic targets, identifying gene functions, generating animal models, and developing gene therapies.Moreover, CRISPR-Cas9 systems have been used to partially or completely alleviate disease symptoms by mutating or correcting related genes. However, the efficient transfer of CRISPR-Cas9 system into cells and target organs remains a challenge that affects the robust and precise genome editing activity. The current review focuses on delivery systems for Cas9 mRNA, Cas9 protein, or vectors encoding the Cas9 gene and corresponding sgRNA. Non-viral delivery of Cas9 appears to help Cas9 maintain its on-target effect and reduce off-target effects, and viral vectors for sgRNA and donor template can improve the efficacy of genome editing and homology-directed repair. Safe, efficient, and producible delivery systems will promote the application of CRISPR-Cas9 technology in human gene therapy.Zhi-Yao He Ke Men Zhou Qin Yang Yang Ting Xu Yu-Quan Wei 2017Science China(Life Sciences)2017,60,5:10
17Self-organized ordering of earthquakes(M≥8) in China's Mainland显示文摘纸论述了大地震的一个新常规模式(网络结构) 在过去的 700 年期间发生在大陆中国,它可能是有用的改进大地震的理解并且能为未来伟人地震的预言的学习用作一个库。因为有在在中国的宽程度的历史、最近的地震的相当完全、充满信心的记录,它能被做。Xu Daoyi Men Kepei Deng Zhihui 2010Engineering Sciences2010,8,4:10
18Phylogenetic constrains on mycorrhizal specificity in eight Dendrobium(Orchidaceae) species显示文摘Plant phylogeny constrains orchid mycorrhizal(OrM) fungal community composition in some orchids. Here, we investigated the structures of the OrM fungal communities of eight Dendrobium species in one niche to determine whether similarities in the OrM fungal communities correlated with the phylogeny of the host plants and whether the Dendrobium-OrM fungal interactions are phylogenetically conserved. A phylogeny based on DNA data was constructed for the eight coexisting Dendrobium species,and the OrM fungal communities were characterized by their roots. There were 31 different fungal lineages associated with the eight Dendrobium species. In total, 82.98% of the identified associations belonging to Tulasnellaceae, and a smaller proportion involved members of the unknown Basidiomycota(9.67%). Community analyses revealed that phylogenetically related Dendrobium tended to interact with a similar set of Tulasnellaceae fungi. The interactions between Dendrobium and Tulasnellaceae fungi were significantly influenced by the phylogenetic relationships among the Dendrobium species. Our results provide evidence that the mycorrhizal specificity in the eight coexisting Dendrobium species was phylogenetically conserved.Xiaoke Xing Xueting Ma Jinxin Men Yanhong Chen Shunxing Guo 2017Science China(Life Sciences)2017,60,5:10
19Axon degeneration: make the Schwann cell great again显示文摘Axonal degeneration is a pivotal feature of many neurodegenerative conditions and substantially accounts for neurological morbidity. A widely used experimental model to study the mechanisms of axonal degeneration is Wallerian degeneration(WD), which occurs after acute axonal injury. In the peripheral nervous system(PNS), WD is characterized by swift dismantling and clearance of injured axons with their myelin sheaths. This is a prerequisite for successful axonal regeneration. In the central nervous system(CNS), WD is much slower, which significantly contributes to failed axonal regeneration. Although it is well-documented that Schwann cells(SCs) have a critical role in the regenerative potential of the PNS, to date we have only scarce knowledge as to how SCs ‘sense' axonal injury and immediately respond to it. In this regard, it remains unknown as to whether SCs play the role of a passive bystander or an active director during the execution of the highly orchestrated disintegration program of axons. Older reports, together with more recent studies, suggest that SCs mount dynamic injury responses minutes after axonal injury, long before axonal breakdown occurs. The swift SC response to axonal injury could play either a pro-degenerative role, or alternatively a supportive role, to the integrity of distressed axons that have not yet committed to degenerate. Indeed, supporting the latter concept, recent findings in a chronic PNS neurodegeneration model indicate that deactivation of a key molecule promoting SC injury responses exacerbates axonal loss. If this holds true in a broader spectrum of conditions, it may provide the grounds for the development of new glia-centric therapeutic approaches to counteract axonal loss.Keit Men Wong Elisabetta Babetto Bogdan Beirowski 2017Neural Regeneration Research2017,12,4:10
20Splenectomy protects experimental rats from cerebral damage after stroke due to anti-inflammatory effects显示文摘ZHANG Bing-jun MEN Xue-jiao LU Zheng-qi LI Hai-yan QIU Wei HU Xue-qiang 2013Chinese Medical Journal2013,,12:9
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