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| 1 | Chemical vapor deposition of monolayer WS2 nano- sheets on Au foils toward direct application in hydrogen evolution显示文摘Monolayer tungsten disulfide (WS2), a typical member of the semiconducting transition metal dichalcogenide family has drawn considerable interest because of its unique properties. Intriguingly the edge of WS2 exhibits an ideal hydrogen binding energy which makes WS2 a potential alternative to Pt-based electrocatalysts for the hydrogen evolution reaction (HER). Here, we demonstrate for the first time the successful synthesis of uniform monolayer WS2 nanosheets on centimeter- scale Au foils using a facile, low-pressure chemical vapor deposition method. The edge lengths of the universally observed triangular WS2 nanosheets are tunable from -100 to N1,000 nm. The WS2 nanosheets on Au foils featuring abundant edges were then discovered to be efficient catalysts for the HER, exhibiting a rather high exchange current density of -30.20 μA/cm2 and a small onset potential of Nl10 mV. The effects of coverage and domain size (which correlate closely with the active edge density of WS2) on the electrocatalytic activity were investigated. This work not only provides a novel route toward the batch-production of monolayer WS2 via the introduction of metal foil substrates but also opens up its direct application for facile HER. | Yanshuo Zhang Jianping Shi Gaofeng Han Minjie Li Qingqing Ji Donglin Ma Yu Zhang Cong Li Xingyou Lang Yanfeng Zhang Zhongfan Liu | 2015 | Nano Research2015，8，9： | 7 |
| 2 | A new seismic isolation system and its feasibility study显示文摘这份报纸介绍称为一个周期的基础(PF ) 的一个新地震隔离系统,在包括周期性地被安排的地方。PF 与传统的基础隔离不同因为它在结构引起基本频率移动,因此减少它的反应并且产生频率差距。如果一个震波的频率内容掉进差距,它不能在基础宣传。因此,它不对上面的结构施加影响。为 2D PF 的频率差距的乐队的系统的研究被进行。象密度和有弹性的模量以及频率差距的乐队上的 PF 和它的材料的充满的部分那样的物理、几何的参数的影响被调查,并且有象 2.49 鈥 ?.72 Hz 一样低的频率差距的一个图案被完成。频率差距的这个乐队在地震工程对应于很好设计系列。有不同基础的六故事的框架结构的数字模拟证明一个建议 PF 罐头极大地减少孤立的结构的地震反应。这调查证明 PF 在地震隔离技术的未来应用有大潜力。关键词地震隔离 - 周期的基础 - 频率差距的乐队旁边支持了:在资助 No.90715006 | Jia Gaofeng~+ and Shi Zhifei~(++) School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China Graduated Student ++ Professor | 2010 | Earthquake Engineering and Engineering Vibration2010，9，1： | 6 |
| 3 | Distribution of isotopes and chemicals in precipitation in Shule River Basin,northwestern China:an implication for water cycle and groundwater recharge显示文摘The distribution of stable isotopes and ions in precipitation in the Shule River Basin,northwestern China,were investigated to understand the regional water cycle and precipitation input to groundwater recharge.The study found that the mean annual concentrations of Ca2+,Na+,SO42–,Cl–,Mg2+,NO3–,and K+ in the basin were lower than those in other arid areas of northwestern China.The average concentrations of ions in the lower reaches of the Shule River were higher than those in the upper reaches.The results showed that the main ionic concentrations decreased with the increase of precipitation amount,indicating that heavy precipitation cannot only wash crustal aerosols out of the atmosphere,but also create a dilution effect.Cl– and Na+ in precipitation had a strong and positive correlation,suggesting a common origin for the two ions.However,the excess of Na+,combined with non-marine SO42– and NO3–,indicated that some ions were contributed by terrestrial origins.In the extremely arid regions of northwestern China,the evaporation process obviously changes the original relationship between δ2H and δ18O in precipitation,and leads to dexcess values <8‰.δ18O and temperature were significantly correlated,suggested that temperature strongly affected the characteristics of isotopes in the study area.The δ18O value indicates a dominant effect of westerly air masses and southwest monsoon in warm months,and the integrated influence of westerly and Siberian-Mongolian polar air masses in cold months.The d-excess values were generally lower in warm months than those in cold months,indicating that post-condensation processes played a significant role in the water cycle.The results provide reliable precipitation input information that can be used in future groundwater recharge calculations in the study area. | ZHAO Wei MA Jinzhu GU Chunjie QI Shi ZHU Gaofeng HE Jiahua | 2016 | Journal of Arid Land2016，8，6： | 6 |
| 4 | Tet2 Regulates Osteoclast Differentiation by Interacting with Runx1 and Maintaining Genomic 5-Hydroxymethylcytosine(5hmC)显示文摘As a dioxygenase, Ten-Eleven Translocation 2(TET2) catalyzes subsequent steps of 5-methylcytosine(5 mC) oxidation. TET2 plays a critical role in the self-renewal, proliferation,and differentiation of hematopoietic stem cells, but its impact on mature hematopoietic cells is not well-characterized. Here we show that Tet2 plays an essential role in osteoclastogenesis. Deletion of Tet2 impairs the differentiation of osteoclast precursor cells(macrophages) and their maturation into bone-resorbing osteoclasts in vitro. Furthermore, Tet2^(-/-) mice exhibit mild osteopetrosis, accompanied by decreased number of osteoclasts in vivo. Tet2 loss in macrophages results in the altered expression of a set of genes implicated in osteoclast differentiation, such as Cebpa, Mafb, and Nfkbiz. Tet2 deletion also leads to a genome-wide alteration in the level of 5-hydroxymethylcytosine(5 hmC) and altered expression of a specific subset of macrophage genes associated with osteoclast differentiation. Furthermore, Tet2 interacts with Runx1 and negatively modulates its transcriptional activity. Our studies demonstrate a novel molecular mechanism controlling osteoclast differentiation and function by Tet2, that is, through interactions with Runx1 and the maintenance of genomic 5 hmC. Targeting Tet2 and its pathway could be a potential therapeutic strategy for the prevention and treatment of abnormal bone mass caused by the deregulation of osteoclast activities. | Yajing Chu Zhigang Zhao David Wayne Sant Ganqian Zhu Sarah M. Greenblatt Lin Liu Jinhuan Wang Zeng Cao Jeanette Cheng Tho Shi Chen Xiaochen Liu Peng Zhang Jaroslaw P. Maciejewski Stephen Nimer Gaofeng Wang Weiping Yuan Feng-Chun Yang Mingjiang Xu | 2018 | Genomics, Proteomics & Bioinformatics2018，16，3： | 2 |
| 5 | Hydroxyl,hydroperoxyl free radicals determination methods in atmosphere and troposphere显示文摘The hydroxyl radical(·OH)has a crucial function in the oxidation and removal of many atmospheric compounds that are harmful to health.Nevertheless,high reactivity,low atmospheric abundance,determination of hydroxyl,and hydroperoxyl radical’s quantity is very difficult.In the atmosphere and troposphere,hydroperoxyl radicals(HO_(2))are closely demanded in the chemical oxidation of the troposphere.But advances in technology have allowed researchers to improve the determination methods on the research of free radicals through some spectroscopic techniques.So far,several methods such as laser-induced fluorescence(LIF),high-performance liquid chromatography(HPLC),and chemical ionization mass spectroscopy have been identified and mostly used in determining the quantity of hydroxyl and hydroperoxyl radicals.In this systematic review,we have advised the use of scavenger as an advance for further researchers to circumvent some of these problems caused by free radicals.The primary goal of this review is to deepen our understanding of the functions of the most critical free radical(·OH,HO_(2))and also understand the currently used methods to quantify them in the atmosphere and troposphere. | Guoying Wang Yves Iradukunda Gaofeng Shi Pascaline Sanga Xiuli Niu Zhijun Wu | 2021 | Journal of Environmental Sciences2021，33，1： | 2 |
| 6 | Erratum to: Distribution of isotopes and chemicals in precipitation in Shule River Basin, northwestern China: an implication for water cycle and groundwater recharge显示文摘 | ZHAO Wei MA Jinzhu GU Chunjie QI Shi ZHU Gaofeng HE Jiahua | 2017 | Journal of Arid Land2017，9，2： | 1 |
| 7 | Con- trollable growth and transfer of monolayer MoS2 on Au foils and its potential application in hydrogen evolution reaction显示文摘 | SHI Jianping MA Donglin HAN Gaofeng | 2014 | ACS Nano2014，8，10： | 1 |
| 8 | Preoperative diagnosis and staging of rectal cancer using diffusion?weightedand water imaging combined with dynamic contrast?enhanced scanning显示文摘 | Qili Zhao Lijian Liu Qiuyan Wang Zexia Liang Gaofeng Shi | 2014 | Oncology Letters2014，，： | 1 |
| 9 | Groundwater recharge and evolution in the Dunhuang Basin, northwestern China显示文摘 | Jinzhu Ma Jianhua He Shi Qi Gaofeng Zhu Wei Zhao W. Mike Edmunds Yanping Zhao | 2013 | Applied Geochemistry2013，，： | 1 |
| 10 | Total syntheses of seven stemoamide-type Stemona alkaloids显示文摘Six Stemona alkaloids were synthesized racemically using stemoamide,obtained via a cascade cyclization or our reported transannular cyclization of parvistemoamide,as the common intermediate.Thioamides facilitated the separation of isosaxorumamide and saxorumamide,and promoted the first syntheses of other four N-oxide or pyrrolidine bearing Stemona alkaloids via chemoselective reduction and oxidation. | Tao Shi Fei Cao Jinhong Chen Xiaodong Wang Gaofeng Yin Huihong Wang Zhen Wang | 2022 | Organic Chemistry Frontiers2022，9，3： | 0 |
| 11 | Potential factors and mechanism of particulate matters explosive increase induced by free radicals oxidation显示文摘Atmospheric particulate pollution in China has attracted much public attention.Occasionally, the particle number concentration increases sharply in a short time period,which is defined as a 'particulate matter explosive increase'. Heavy particulate matter pollution not only reduces visibility but also has an adverse effect on human health. Hence,there is an urgent need to discover the causes of particulate matter explosive increase.During this campaign, the particle number concentration and free radicals were measured at a tall building on the campus of Lanzhou University of Technology. Additionally, we examined a series of chemicals to reproduce the observed particulate matter explosive increase in a smog chamber to determine its potential factors. Then, we analyzed the mechanism of particulate matter explosive increase in the presence of free radicals. We found that, among the potential inorganic and organic sources analyzed, a mixture of organic and SO_2 in the research region had a major effect on particulate matter explosive increase. Moreover, free radical oxidation has a large effect, especially in the formation of organic particulates. | Guoying Wang Shiming Jia Xiuli Niu Haoqi Tian Yanrong Liu Zhong Xie Chao Liu Yucan Dong Ying Su Jianglei Yu Gaofeng Shi Xuefu Chen Lan Li Peng Zhang | 2019 | Journal of Environmental Sciences2019，31，7： | 0 |
| 12 | Lawesson’s reagent-promoted deoxygenation of γ-hydroxylactams or succinimides for the syntheses of substituted pyrroles显示文摘A new method of Lawesson’s reagent-promoted deoxygenation of γ-hydroxypyrrolidones or succinimides was developed for synthesizing substituted pyrroles with 92 examples displayed. This reaction features simple operation, satisfactory yields, wide substrate scope, and excellent functional group tolerance.This robust protocol has been successfully applied in the expeditious syntheses of the key intermediate ofStemona alkaloids. | Tao Shi Xiaodong Wang Gaofeng Yin Zhen Wang | 2022 | Organic Chemistry Frontiers2022，9，6： | 0 |
| 13 | Buffer and Wiresizing Optimization under the Distributed RLC Model with Crosstalk Constraint显示文摘In this paper, we study the interconnect buffer and wiresizing optimization problem under a distributed RLC model to optimize not just area and delay, but also crosstalk for RLC circuit with non-monotone signal response. We present a new multi- objective genetic algorithm(MOGA) which uses a single objective sorting(SOS) method for constructing the non-dominated set to solve this multi-objective interconnect optimization problem. The MOGA/SOS optimal algorithm provides a smooth trade-off among signal delay, wave form, and routing area. Furthermore, we use a new method to calculate the lower bound of crosstalk. Extensive experimental results show that our algorithm is scalable with problem size. Furthermore, compared to the solution based on an Elmore delay model, our solution reduces the total routing area by up to 30%, the delay to the critical sinks by up to 25%, while further improving crosstalk up to 25.73% on average. | QI Chang WANG Gaofeng SHI Xinzhi | 2007 | Wuhan University Journal of Natural Sciences2007，12，6： | 0 |
| 14 | Biomimetic extracellular vesicles for the tumor targeted treatment显示文摘Extracellular vesicles(EVs)are nanoscale substances produced by most cells,which were not fully understood in the early years.However,with the development of advanced techniques,researchers have discovered that EVs play an essential role in information exchange and signal transduction between cells.Nowadays,EVs are being used,modified,and developed as a natural drug carrier in various medical fields because of their high biocompatibility and natural affinity with the source body.Many studies have shown that multiple sources of EVs have been modified and utilized in cancer therapy to improve patients’treatment windows and effectively prolong patient survival.In this paper,we review the advances in the treatment of cancer based on EVs.We summarize the types of EVs loading therapy,the modes of drug loading and the latest therapeutic applications of multiple modes combined with EVs in cancer treatment.We conclude with a discussion of the current status,challenges,and prospects of EVs as a tool for tumor therapy. | Ruolin Shi An Zhan Xinze Li Bin Kong Gaofeng Liang | 2023 | Engineered Regeneration2023，4，4： | 0 |
| 15 | Recent advances in the syntheses of pyrroles显示文摘The pyrrole moiety is an important structural motif in functional materials,natural products,and pharmaceuticals.More and more synthetic strategies toward pyrroles have emerged,where various efficient building blocks are developed and these synthons enable the syntheses of pyrroles with different numbers of components.However,no review specifically summarizes the syntheses of pyrroles according to the type and number of employed building blocks.To aid researchers to design appropriate substrates for pyrrole synthesis,herein we summarized the advances in pyrrole syntheses and classified these reactions into four categories according to the number of employed components,which may shed light on developing more efficient synthetic methods toward substituted pyrroles. | Tao Shi Gaofeng Yin Xiaodong Wang Yongxia Xiong Yan Peng Shuang Li Yaofu Zeng Zhen Wang | 2023 | Green Synthesis and Catalysis2023，4，1： | 0 |
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