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| 1 | Long-term monitoring and source apportionment of PM_(2.5)/PM_(10) in Beijing,China显示文摘During 2001-2006,PM2.5 (particle matter with aerodynamic diameter less than 2.5 microns) and PM10 (particle matter with aerodynamic diameter less than 10 microns) were collected at the Beijng Normal University (BNU) site,China,and in 2006,at a background site in Duolun (DL).The long-term monitoring data of elements,ions,and black carbon showed that the major constituents of PM2.5 were black carbon (BC) crustal elements,nitrates,ammonium salts,and sulfates.These five major components accounted for 20%-80% of the total PM2.5.During this period,levels of Pb and S in PM remained rather high,as compared with the levels in other large cities in the world.Source apportionment results suggest that there were 6 common sources for PM2.5 and PM10,i.e.,soil dust,vehicular emission,coal combustion,secondary aerosol,industrial emission,and biomass burning.Coal combustion was the largest contributor of PM2.5 with a percentage of 16.6%,whereas soil dust played the most important role in PM10 with a percentage of 27%.In contrast,only three common types of sources could be resolved at the background DL site,namely,soil dust,biomass combustion,and secondary aerosol from combustion sources. | Hailin WANG Zhengping HAO | 2008 | Journal of Environmental Sciences2008,20,11: | 65 |
| 2 | Characterization and assessment of volatile organic compounds (VOCs) emissions from typical industries显示文摘VOCs play an increasingly important role in affecting air quality and threatening human health in China in recent years,where industry activities show a significant contribution to VOCs emission.In this article we report our long term study of industrial VOCs emissions of six major industries (vehicle manufacturing,printing,equipment coating,electronic manufacturing,furniture manufacturing and bio-pharming) on the aspects of emission characteristics,environmental impact and health risk assessment,and control challenge analysis with the purpose to obtain in-depth understanding of industry VOCs emissions and offer some original basements for national control and management of industry VOCs emissions.This study shows that all these industries give middle or low emission with total VOCs concentration less than 1000 mg/m3 at each exhaust pipe.Benzenes,esters,alcohols,ketones,alkanes,chloroalkanes and alkenes were detected as the major emission components and the most frequently monitored VOCs were benzenes,which varied obviously with different processes and industries.The environmental impact assessments indicate that vehicle manufacturing and benzenes should be prior controlled with the purpose to reduce air pollution.While,health risk assessments suggest that furniture manufacturing and chloroalkanes should be firstly controlled.Control analysis indicates that developing technologies with low cost and high efficiency and establishing and completing specific industry emission standards/regulations are the two key issues in VOCs emission management at present stage. | WANG HaiLin NIE Lie LI Jing WANG YuFei WANG Gang WANG JunHui HAO ZhengPing | 2013 | Science China(Technological Sciences)2013,56,3: | 60 |
| 3 | Ultrafast epitaxial growth of metre-sized single-crystal graphene on industrial Cu foil显示文摘A foundation of the modern technology that uses single-crystal silicon has been the growth of highquality single-crystal Si ingots with diameters up to 12 inches or larger. For many applications of graphene, large-area high-quality(ideally of single-crystal) material will be enabling. Since the first growth on copper foil a decade ago, inch-sized single-crystal graphene has been achieved. We present here the growth, in 20 min, of a graphene film of(5 ×50) cm^2 dimension with >99% ultra-highly oriented grains.This growth was achieved by:(1) synthesis of metre-sized single-crystal Cu(1 1 1) foil as substrate;(2)epitaxial growth of graphene islands on the Cu(1 1 1) surface;(3) seamless merging of such graphene islands into a graphene film with high single crystallinity and(4) the ultrafast growth of graphene film.These achievements were realized by a temperature-gradient-driven annealing technique to produce single-crystal Cu(1 1 1) from industrial polycrystalline Cu foil and the marvellous effects of a continuous oxygen supply from an adjacent oxide. The as-synthesized graphene film, with very few misoriented grains(if any), has a mobility up to ~23,000 cm^2 V^(-1)s^(-1)at 4 K and room temperature sheet resistance of ~230 Ω/□. It is very likely that this approach can be scaled up to achieve exceptionally large and high-quality graphene films with single crystallinity, and thus realize various industrial-level applications at a low cost. | Xiaozhi Xu Zhihong Zhang Jichen Dong Ding Yi Jingjing Niu Muhong Wu Li Lin Rongkang Yin Mingqiang Li Jingyuan Zhou Shaoxin Wang Junliang Sun Xiaojie Duan Peng Gao Ying Jiang Xiaosong Wu Hailin Peng Rodney S. Ruoff Zhongfan Liu Dapeng Yu Enge Wang Feng Ding Kaihui Liu | 2017 | Science Bulletin2017,62,15: | 40 |
| 4 | A comprehensive classification method for VOC emission sources to tackle air pollution based on VOC species reactivity and emission amounts显示文摘In China, volatile organic compound(VOC) control directives have been continuously released and implemented for important sources and regions to tackle air pollution. The corresponding control requirements were based on VOC emission amounts(EA), but never considered the significant differentiation of VOC species in terms of atmospheric chemical reactivity. This will adversely influence the effect of VOC reduction on air quality improvement. Therefore,this study attempted to develop a comprehensive classification method for typical VOC sources in the Beijing–Tianjin–Hebei region(BTH), by combining the VOC emission amounts with the chemical reactivities of VOC species. Firstly, we obtained the VOC chemical profiles by measuring 5 key sources in the BTH region and referencing another 10 key sources, and estimated the ozone formation potential(OFP) per ton VOC emission for these sources by using the maximum incremental reactivity(MIR) index as the characteristic of source reactivity(SR). Then, we applied the data normalization method to respectively convert EA and SR to normalized EA(NEA) and normalized SR(NSR) for various sources in the BTH region.Finally, the control index(CI) was calculated, and these sources were further classified into four grades based on the normalized CI(NCI). The study results showed that in the BTH region,furniture coating, automobile coating, and road vehicles are characterized by high NCI and need to be given more attention; however, the petro-chemical industry, which was designated as an important control source by air quality managers, has a lower NCI. | Guohao Li Wei Wei Xia Shao Lei Nie Hailin Wang Xiao Yan Rui Zhang | 2018 | Journal of Environmental Sciences2018,30,5: | 32 |
| 5 | Identification and characterization of microRNAs in raw milk during different periods of lactation, commercial fluid, and powdered milk products显示文摘最近的婴儿的公式奶粉污染事件证明了在牛奶质量控制的经典标记或标准在识别鈥渕a nipulated 鈥 ? 是不够的差质量的牛奶。在现在的学习,我们第一次证明奶牛牛奶包含大量 microRNAs ( miRNAs )并且牛奶特定的 miRNAs 的唯一的表示侧面能为未加工的牛奶和牛奶相关的商业产品的质量控制用作新奇指示物和可能的新标准,例如液体牛奶和粉状的公式牛奶。用定序的 Solexa,首先,我们系统地在未加工的牛奶屏蔽了 miRNA 表示并且在未加工的牛奶识别了 245 miRNAs 的一个总数。不同于层次在哺乳的不同时期是其表达式将近相同的另外的经典 biomarkers,单个 miRNAs 能显著地在哺乳过程期间被改变,含有那 miRNAs 可以是更精确的指示物反映牛奶的优秀改变。第二,使用 TaqMan 基于探查的 miRNA 量的 RT-PCR ,我们进一步识别了七 miRNAs 重要地在整个哺乳过程,和更多有相对一致的表情,这七牛奶特定的 miRNAs 的表示侧面能为区别用作理想的 biomarker 差质量或从纯未加工的牛奶的 鈥渕a nipulated 鈥?牛奶,象为商业乳制品的质量控制一样,例如液体,牛奶和粉状的公式挤。一起,我们的调查结果为为决定未加工的牛奶或牛奶相关的商业产品的质量理解牛奶 miRNAs 和一个新潜在的标准的生理的角色提供一个基础。 | Xi Chen Chao Gao Haijin Li Lei Huang Qi Sun Yanye Dong Chunliang Tian Shengpu Gao Hailin Dong Danping Guan Xiaoyun Hu Shujian Zhao Liang Li Lin Zhu Qiao Yan Junfeng Zhang Ke Zen Chen-Yu Zhang | 2010 | Cell Research2010,20,10: | 29 |
| 6 | Controlling cyanobacterial blooms by managing nutrient ratio and limitation in a large hypereutrophic lake: Lake Taihu, China显示文摘Excessive nitrogen(N) and phosphorus(P) loading of aquatic ecosystems is a leading cause of eutrophication and harmful algal blooms worldwide, and reducing nutrient levels in water has been a primary management objective. To provide a rational protection strategy and predict future trends of eutrophication in eutrophic lakes, we need to understand the relationships between nutrient ratios and nutrient limitations. We conducted a set of outdoor bioassays at the shore of Lake Taihu. It showed that N only additions induced phytoplankton growth but adding only P did not. Combined N plus P additions promoted higher phytoplankton biomass than N only additions, which suggested that both N and P were deficient for maximum phytoplankton growth in this lake(TN:TP = 18.9). When nutrients are present at less than 7.75–13.95 mg/L TN and 0.41–0.74 mg/L TP, the deficiency of either N or P or both limits the growth of phytoplankton. N limitation then takes place when the TN:TP ratio is less than 21.5–24.7(TDN:TDP was 34.2–44.3), and P limitation occurs above this. Therefore, according to this ratio, controlling N when N limitation exists and controlling P when P deficiency is present will prevent algal blooms effectively in the short term. But for the long term, a persistent dual nutrient(N and P) management strategy is necessary. | Jianrong Ma Boqiang Qin Pan Wu Jian Zhou Cheng Niu Jianming Deng Hailin Niu | 2015 | Journal of Environmental Sciences2015,27,1: | 20 |
| 7 | Consensus on the application of negative pressure wound therapy of diabetic foot wounds显示文摘Because China is becoming an aging society,the incidence of diabetes and diabetic foot have been increasing.Diabetic foot has become one of the main health-related killers due to its high disability and mortality rates.Negative pressure wound therapy(NPWT)is one of the most effective techniques for the treatment of diabetic foot wounds and great progress,both in terms of research and its clinical application,has been made in the last 20 years of its development.However,due to the complex pathogenesis and management of diabetic foot,irregular application of NPWT often leads to complications,such as infection,bleeding and necrosis,that seriously affect its treatment outcomes.In 2020,under the leadership of Burns,Trauma and Tissue Repair Committee of the Cross-Straits Medicine Exchange Association,the writing group for‘Consensus on the application of negative pressure wound therapy of diabetic foot wounds’was established with the participation of scholars from the specialized areas of burns,endocrinology,vascular surgery,orthopedics and wound repair.Drawing on evidence-based practice suggested by the latest clinical research,this consensus proposes the best clinical practice guidelines for the application and prognostic evaluation of NPWT for diabetic foot.The consensus aims to support the formation of standardized treatment schemes that clinicians can refer to when treating cases of diabetic foot. | Shizhao Ji Xiaobin Liu Jie Huang Junmin Bao Zhaohong Chen Chunmao Han Daifeng Hao Jingsong Hong Dahai Hu Yufeng Jiang Shang Ju Hongye Li Zongyu Li Guangping Liang Yan Liu Gaoxing Luo Guozhong Lv Xingwu Ran Zhongmin Shi Juyu Tang Aiping Wang Guangyi Wang Jiangning Wang Xin Wang Bing Wen Jun Wu Hailin Xu Maojin Xu Xiaofei Ye Liangxi Yuan Yi Zhang Shichu Xiao Zhaofan Xia | 2021 | Burns & Trauma2021,9,1: | 17 |
| 8 | Upregulation of CD81 in trophoblasts induces an imbalance of Treg/Th17 cells by promoting IL-6 expression in preeclampsia显示文摘The disturbance of maternal immune tolerance to a semiallogeneic fetus is recognized as one of the key pathologies of preeclampsia(PE),in which an imbalance between the inflammation-limiting regulatory T cells(Tregs)and the inflammationmediating Th17 cells plays an essential role.Previously,we reported that the abnormal upregulation of tetraspannin CD81 in trophoblast cells(fetal component)participated in the pathogenesis of PE.However,as one of the potential immune regulatory molecules,whether CD81 induces PE by interfering with the balance of the maternal immune system has not yet been clarified.Thus,we investigated the relationship between the upregulation of CD81 in trophoblast cells and the imbalance of Treg and Th17 cells in mothers.Here,we demonstrated that upregulation of CD81 in trophoblast cells was accompanied by a decrease in Treg cells and an increase in Th17 cells in both the basal plate(placental maternal side)and peripheral blood of patients with PE.In vitro culture of naïve T cells with medium from the CD81-overexpressing trophoblast cell line HTR-8 resulted in enhanced differentiation of T cells into Th17 cells and decreased the formation of Tregs,which was dependent on the paracrine signaling of IL-6 in trophocytes,induced by CD81.In a CD81-induced PE rat model,we found a significant shift of T cell differentiation towards Th17 cells,and administration of IL-6 antibody mitigated the PE phenotype and the imbalance of the Treg/Th17 cells.These results define a vital regulatory cascade involving trophocyte-derived CD81,IL-6,and maternal Treg/Th17 cells in the pathogenesis of PE and suggests new therapeutic approaches based on CD81 and IL-6 downregulation to prevent human PE. | Hailin Ding Yimin Dai Yi Lei Zhiyin Wang Dan Liu Ruotian Li Li Shen Ning Gu Mingming Zheng Xiangyu Zhu Guangfeng Zhao Yali Hu | 2019 | Cellular & Molecular Immunology2019,16,3: | 15 |
| 9 | Simulation of the screening process on a circularly vibrating screen using 3D-DEM显示文摘A numerical study of the motion particulates follow along a circularly vibrating screen deck was done using the three dimensional Discrete Element Method (DEM). The motion of the particles was analyzed. The effects of vibration amplitude, throwing index, and screen deck inclination angle on the screening process are discussed. The results show that the average velocity of the particles increases along the lon- gitudinal direction of the deck. The screening efficiency is highest when the vibration amplitude, throw- ing index, and screen deck inclination angle are 3-3.5 mm, 2.7 and 15°, respectively. This work is helpful for developing a deep understanding of particle motion and for optimizing screen separator designs. | Zhao Lala Zhao Yuemin Liu Chusheng Li Jun Dong Hailin | 2011 | Mining Science and Technology2011,21,5: | 14 |
| 10 | Antimony smelting process generating solid wastes and dust:Characterization and leaching behaviors显示文摘A large amount of solid waste has been produced by the antimony smelting process in the'World Capital of Antimony', Xikuangshan area in China. This study comprehensively investigated the physical and chemical characteristics of the various solid wastes, as well as the leaching behavior of the solid wastes, which included water-quenched slag,arsenic-alkali residue, desulfurized slag and blast furnace dust. These four types of waste were enriched in a variety of heavy metals and metalloids and more specifically with As and Sb levels up to 8.6 × 104 and 3.16 × 105mg/kg, respectively, in arsenic-alkali residue. For desulfurized slag and water-quenched slag, the leaching concentration of Sb significantly exceeded the acceptable limits during the leaching tests using the toxicity characteristic leaching procedure and the synthetic precipitation leaching procedure. In addition, As leaching in arsenic-alkali residue was extraordinarily hazardous, being three orders of magnitude higher than the regulatory level of As. According to the results of the extraction tests, all the tested wastes were classified as hazardous waste. | Xuejun Guo Kunpeng Wang Mengchang He Ziwei Liu Hailin Yang Sisi Li | 2014 | Journal of Environmental Sciences2014,26,7: | 13 |
| 11 | Influence of Long-Term Fertilization on Selenium Accumulation in Soil and Uptake by Crops显示文摘Continuous applications of organic and inorganic fertilizers can affect soil and food quality with respect to selenium(Se) concentrations.A long-term(over 20 years) experimental field study,started in 1989,was conducted to investigate the changes in soil Se fractions and its uptake by crops,as affected by different fertilizer practices,in the North China Plain with an annual crop rotation of winter wheat and summer maize.The long-term experiment was arranged in a complete randomized block design consisting of 4replications with 7 fertilizer treatments:1) organic compost(OC),2) half organic compost plus half N-P-K chemical fertilizers(OC+ NPK),3) N-P-K fertilizers(NPK),4) N-P fertilizers(NP),5) P-K fertilizers(PK),6) N-K fertilizers(NK),and 7) an un-amended control.Soil samples from the surface(20 cm) were collected in 1989,1994,1999,2004 and 2009 to characterize Se and other soil properties.In 2009,the average soil Se concentrations in the treatments(149 ± 8 μg kg^(-1)) were higher than those in the soil samples collected in 1989 at the beginning of the experiment(112 ± 4 μg kg^(-1)),and decreased in the order of OC > OC + NPK > NPK≈NP > PK ≈NK > control.Sequential extraction showed the oxidizable fraction(50.06%± 3.94%) was the dominant form of Se in the soil,followed by the residual fraction(24.12%± 2.89%),exchangeable fraction(15.09%± 4.34%) and Fe-Mn oxides fraction(10.73%± 4.04%).With an increase of soil K,the exchangeable Se concentrations in the soil increased.The Se concentrations in the soil tillage layer(0-20 cm) were mainly related to soil organic carbon(SOC),although different contributions came from atmospheric deposition,irrigation and fertilizers.With the accumulation of SOC,the uptakes of soil Se by two crops were inhibited.For the OC and OC + NPK treatments,Se concentrations in wheat grains were lower than the critical standard of Se in stable food(100 μg kg^(-1)).Additionally,Se concentrations in grains were also decreased by the deficiencies of major soil nutrients,especially P. | WANG Qingyun ZHANG Jiabao ZHAO Bingzi XIN Xiuli DENG Xihai Hailin ZHANG | 2016 | Pedosphere2016,26,1: | 12 |
| 12 | Characterization of PM_(2.5)/PM_(2.5-10) and source tracking in the juncture belt between urban and rural areas of Beijing显示文摘Coarse (PM2.5-10) and fine (PM2.5) atmospheric particulate samples were collected in summer and winter during 2005―2007 in the juncture belt between urban and rural areas of Beijing. Elements, ions, organic/elemental carbon (OC/EC) and polynuclear aromatic hydrocarbons (PAHs) were determined to obtain some latest information about the particulate pollution in the juncture belt of Beijing. Particulate matter levels at this site were high as compared with the levels at other sampling sites in Beijing. Pollution elements, secondary ions and PAHs were enriched in fine particles rather than in coarse particles. An obvious seasonal variation of the chemical composition of PM was observed. Source apportionment results showed that secondary components were the largest mass contributor of PM2.5, accounting for 28%; whereas soil-related sources were the largest contributor of PM2.5-10, explaining about 49% of the total mass. The abnormal levels of soil heavy metals at the electronic waste disassembly site in the upwind villages suggested the potential impact of such activities to the environment. | WANG HaiLin ZHOU YuMin ZHUANG YaHui WANG XiaoKe HAO ZhengPing | 2009 | Chinese Science Bulletin2009,54,14: | 11 |
| 13 | Tetrachloro-1,4-benzoquinone induces apoptosis of mouse embryonic stem cells显示文摘Pentachlorophenol(PCP) is a widespread,persistent environmental contaminant,and it is enzymatically activated to form a reactive metabolite,tetrachloro-l,4-benzoquinone(TCBQ).To our knowledge,there is no information about TCBQ toxicity on embryonic stem cells.Here,we demonstrated that TCBQ induced significantly apoptosis of mouse embryonic stem cells in a concentration-dependent manner.We also showed that TCBQ elevated genomic5-hydroxymethylcytosine(5hmC) by affecting ten-eleven translocation(Tet) dioxygenases in mouse embryonic stem cells.We further investigated whether Tet dioxygenases were implicated in TCBQ-induced apoptosis.By depleting all three dioxygenases(Tet1-3),we found that Tet dioxygenases slightly inhibited both early and late apoptosis induced by TCBQ at a low concentration(30 μmol/L).Meanwhile,treated by TCBQ at higher concentrations(40and 50 μmol/L),the total percentage of apoptotic cells was not affected by Tet dioxygenases.However,Tet dioxygenases tended to arrest mouse ES cells to be at early apoptotic stage and to reduce the cells to enter later apoptotic stage.These results indicate that Tet dioxygenases play a role in shaping TCBQ-induced apoptosis in mouse embryonic stem cells.Our study provides new insights into the toxicology of PCP and its reactive metabolite TCBQ. | Cuiping Li Fengbang Wang Hailin Wang | 2017 | Journal of Environmental Sciences2017,29,1: | 9 |
| 14 | Characteristics analysis of a novel centralized-driving flip-flow screen显示文摘During screening operation, blinding or clogging of screen perforations generally occurs to reduce the sieving capacity and efficiency. Recently, the flip-flow screening has been widely recognized as a feasible method to deal with the problem. In this paper, a novel centralized-driving flip-flow screen(CFS) was developed for the separation of fine and moist coal, and the key structures, namely, a centralized-driving mechanism and a quasi-circle beam mounted with the mat were designed for high reliability and stability. By means of a test on an experimental prototype, the effect of some factors, i.e., initial stretch and hardness of the polyurethane panel, respectively, and the rotation speed of the driving motor on the kinematic characteristic of the screen surface was investigated. Results show that without an initial stretch, the sieve mat generates the largest vibratory amplitude while the slacker the sieve mat initially is, the smaller amplitude it will accomplish. And an increase in the rotation speed could cause a rise in the vibratory amplitude. Unlike the two factors, the hardness does not have a definite effect on the kinematic performance, on which a further study is required. Finally, screening processing on a laboratory prototype was conducted to draw the conclusion that the developed CFS also has a high sieving efficiency for the fine and moist coal. | Peng Liping Li Fengming Dong Hailin Liu Chusheng Zhao Yuemin Duan Chenlong | 2014 | International Journal of Mining Science and Technology2014,24,2: | 9 |
| 15 | Anlotinib suppresses lymphangiogenesis and lymphatic metastasis in lung adenocarcinoma through a process potentially involving VEGFR-3 signaling显示文摘Objective:Lymphatic metastasis is one of the leading causes of malignancy dispersion in various types of cancer.However,few anti-lymphangiogenic drugs have been approved for clinical use to date.Therefore,new therapies to block lymphangiogenesis are urgently required.Methods:Immunohistochemistry,immunofluorescence,Western blot,migration assays,and lymphangiogenesis and lymphatic metastasis assays were used.Results:Anlotinib,a receptor tyrosine kinase inhibitor,suppressed the rate of new metastatic lesions(31.82%in the placebo arm and 18.18%in the anlotinib arm)in patients with advanced lung adenocarcinoma who were enrolled in our ALTER-0303 study.D2-40+-lymphatic vessel density was strongly correlated with disease stage,metastasis,and poor prognosis in 144 Chinese patients with lung adenocarcinoma.In mice bearing A549EGFP tumors,tumor lymphatic vessel density,tumor cell migration to lymph nodes,and the number of distant metastatic lesions were lower in the anlotinib group than in the controls.Anlotinib inhibited the growth and migration of human lymphatic endothelial cells(hLECs)and lymphangiogenesisin vitro andin vivo.Treatment of hLECs with anlotinib downregulated phosphorylated vascular endothelial growth factor receptor 3(VEGFR-3).Conclusions:Anlotinib inhibits lymphangiogenesis and lymphatic metastasis,probably through inactivating VEGFR-3 phosphorylation.The results indicate that anlotinib may be beneficial for treatment in avoiding lymphangiogenesis and distant lymphatic metastasis in lung adenocarcinoma.(Trial registration:ALTER0303;NCT02388919;March 17,2015.) | Tingting Qin Zhujun Liu Jing Wang Junling Xia Shaochuan Liu Yanan Jia Hailin Liu Kai Li | 2020 | Cancer Biology & Medicine2020,17,3: | 9 |
| 16 | An improved process for grain refinement of large 2219 Al alloy rings and its influence on mechanical properties显示文摘The large 2219 Al alloy rings used to connect propellant tank components of a satellite launch vehicle to each other are conventionally manufactured by radial-axial ring rolling at 460°C with 50% deformation,but often suffer from coarse elongated grain and low ductility. An improved process(hot ring rolling at460°C with 30% deformation, then air cooling to 240°C, followed by ring rolling at 240°C with 20% deformation) was tested for ring manufacturing. The corresponding microstructure evolution and mechanical properties of the produced rings were studied. The results show that the improved process can successfully be applied to manufacture the large 2219 Al alloy rings without formation of macroscopic defects,resulting in a product with fine and uniform grains after heat treatment. The fracture mechanism of both rings was mainly intergranular fracture. With the resulting grain size refinement due to the improved process, more homogeneous slip occured and the crack propagation path became more tortuous during the tensile testing process. Thus, the elongation in all three orthogonal directions was greatly improved,and the axial elongation increased from 3.5% to 10.0%. | Hailin He Youping Yi Shiquan Huang Yuxun Zhang | 2019 | Journal of Materials Science & Technology2019,35,1: | 9 |
| 17 | Removal of cobalt(II) ion from aqueous solution by chitosan–montmorillonite显示文摘Montmorillonite(MMT)modified with chitosan(CTS,molecular weight=5×104)was applied to remove heavy metal cations by using Co2+as a model ion.An increase in MMT interlayer distance observed from X-ray diffraction indicates the intercalation of CTS into MMT.Together with the results of scanning electron microscopy and Fourier transform infrared spectroscopy,it was concluded that the composite material of CTS and MMT(CTS–MMT)was prepared successfully.The mass ratio of CTS to MMT had a strong influence on the adsorption performance of CTS–MMT.The highest adsorption value of 150 mg/g was obtained over the composite material with CTS to MMT mass ratio of 0.25,which is much higher than those reported in other studies.The adsorption isotherms and kinetic results indicated that Co2+was adsorbed over CTS–MMT in a multilayer model,and the chemical sorption of Co2+was determined to be the rate-limiting step. | Hailin Wang Haoqing Tang Zhaotie Liu Xin Zhang Zhengping Hao Zhongwen Liu | 2014 | Journal of Environmental Sciences2014,26,9: | 8 |
| 18 | DEM simulation of particle flow on a single deck banana screen显示文摘A mathematical study of particle flow on a banana screen deck using the discrete element method (DEM) was presented in this paper. The motion characteristics and penetrating mechanisms of particles on the screen deck were studied. Effects of geometric parameters of screen deck on banana screening process were also investigated. The results show that when the values of inclination of discharge and increment of screen deck inclination are 10° and 5° respectively, the banana screening process get a good screening performance in the simulation. The relationship between screen deck length and screening efficiency was further confirmed. The conclusion that the screening efficiency will not significantly increase when the deck length L≥430 mm (L/B ≥ 3.5) was obtained, which can provide theoretical basis for the optimization of banana screen. | Liu Chusheng Wang Hong Zhao Yuemin Zhao Lala Dong Hailin | 2013 | International Journal of Mining Science and Technology2013,23,2: | 8 |
| 19 | Exploitation of Bi2O2Se/graphene van der Waals heterojunction for creating efficient photodetectors and short-channel field-effect transistors显示文摘The formation of heterojunction within solid-state devices enables them with eventually high performances,but provides a challenge for material synthesis and device fabrication because strict conditions such as lattice match are needed.Herein,we show a facile method to fabricate a van der Waals(vdW)heterojunction between two-dimensional(2D)bismuth oxyselenide(Bi2O2Se)and graphene,during which the graphene is directly transferred to the Bi2O2Se and served as a lowcontract-resistant electrode with small work function mismatch(~50 meV).As an optoelectronic device,the Bi2O2Se/graphene vdW heterojunction allows for the efficient sensing toward 1200-nm incident laser.Regarding the application of fieldeffect transistors(FETs),the short-channel(50 nm)sample can be synthesized by utilizing these two 2D materials(ie,channel:Bi2O2Se;drain/source terminal:graphene)and the n-type characteristic can be observed with the accordant field modulation.It is confirmed that we show a simple way to prepare the vdW heterojunction which is aiming to the high-performance applications among optoelectronics and FETs. | Congwei Tan Shipu Xu Zhenjun Tan Luzhao Sun Jinxiong Wu Tianran Li Hailin Peng | 2019 | InfoMat2019,1,3: | 8 |
| 20 | Controlled synthesis of single-crystal SnSe nanoplates显示文摘二维的分层的 IVVI chalcogenides 在下一代的 optoelectronic 为应用正在吸引大兴趣,光电、热电的设备。然而,在高质量的 IVVI chalcogenide nanostructures 的可控制的合成的大挑战迄今为止妨碍了他们的深入的研究和实际应用。第一次,这里,我们由蒸汽运输免职在云母底层上以一种控制方式报导单个水晶的 IVVI SnSe nanoplates 的可行合成。成长得当的 SnSe nanoplates 有近似方形的形状,可控制的方面长度从 1 ~ 6 m 变化。电的运输和 optoelectronic 大小证明同样获得的 SnSe nanoplates 显示 p 类型电导率和高 photoresponsivity。 | Shuli Zhao Huan Wang Yu Zhou Lei Liao Ying Jiang Xiao Yang Guanchu Chen Min Lin Yong wang Hailin Peng Zhongfan Liu | 2015 | Nano Research2015,8,1: | 7 |