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44篇 您的检索式:作者名="Li Huiting"
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1Distribution and assessment of heavy metals in the surface sediment of Yellow River, China显示文摘Large amounts of heavy metals discharged by industrial cities that are located along the middle reach of Yellow River, China have detrimental impacts on both the ecological environment and human health. In this study, fourteen surface sediment samples were taken in the middle reach of the Yellow River. Contents of Zn, Pb, Ni, Cu, Cr, Cd, As were measured, and the pollution status was assessed using three widely used pollution assessment methods, including the single factor index method, Nemerow pollution index method and potential ecological risk index. The concentrations of the studied heavy metals followed the order: Zn > Cr > Cu > Ni > Pb > As > Cd. Nearly 50% of sites had Cu and Cr accumulation. The concentration of Cu at the Yiluo River exceeded the secondary standard value of the Environmental quality standard for soils. Comparison of heavy metal concentrations between this study and other selected rivers indicated that Cu and Cr may be the major pollutants in our case. The single factor index indicated that many samples were at high levels of pollution for Cu and Cd; the Nemerow pollution index indicated that the Yihe River, Luohe River, Yiluo River and Huayuankou were polluted. According to the results of potential ecological risk assessment, Cd in the tributaries of Luo River, Yihe River,and Yiluo River showed high risk toward the ecosystem and human health, Cd in Huanyuankou and Cu in Yiluo River showed a middle level of risk and other samples were at a low level of risk.Nan Yan Wenbin Liu Huiting Xie Lirong Gao Ying Han Mengjing Wang Haifeng Li 2016Journal of Environmental Sciences2016,28,1:33
2Synthetic hexaploid wheat and its utilization for wheat genetic improvement in China显示文摘Synthetic hexaploid wheat (Triticum turgidum × Aegilops tauschii) was created to explore for novel genes from T. turgidum and Ae. tauschii that can be used for common wheat improvement. In the present paper, research advances on the utilization of synthetic hexaploid wheat for wheat genetic improvement in China are reviewed. Over 200 synthetic hexaploid wheat (SHW) accessions from the International Maize and Wheat Improvement Centre (CIMMYT) were introduced into China since 1995. Four cultivars derived from these, Chuanmai 38, Chuanmai 42, Chuanmai 43 and Chuanmai 47, have been released in China. Of these, Chuanmai 42, with large kernels and resistance to stripe rust, had the highest average yield (> 6 t/ha) among all cultivars over two years in Sichuan provincial yield trials, outyielding the commercial check cultivar Chuanmai 107 by 22.7%. Meanwhile, by either artificial chromosome doubling via colchicine treatment or spontaneous chromosome doubling via a union of unreduced gametes (2n) from T. turgidum-Ae. tauschii hybrids, new SHW lines were produced in China. Mitotic-like meiosis might be the cytological mechanism of spontaneous chromosome doubling. SHW lines with genes for spontaneous chromosome doubling may be useful for producing new SHW-alien amphidiploids and double haploid in wheat genetic improvement.Wuyun Yang Dengcai Liu Jun Li Lianquan Zhang Huiting Wei Xiaorong Hu Youliang Zheng Zhouhu He Yuchun Zou 2009Journal of Genetics and Genomics2009,36,9:18
3Relationships of Aegilops tauschii revealed by DNA fingerprints:The evidence for agriculture exchange between China and the West显示文摘从伊朗和 Xinjiang,西方中国,以及它从在中国的 Shaanxi 和河南省省的黄河区域的蔓延的类型的野生的山羊草(Aegilops tauschii Cosson ) 的基因差异和关系被简单顺序重复(SSR ) 分析指纹。在从伊朗的 Aegilops tauschii 就职的基因差异的高水平被观察,并且基因差异的丰富被就职从 Shaanxi,河南省,和 Xinjiang 跟随。Aegilops tauschii 的蔓延的类型在伊朗从不同区域与野类型显示出一种近基因的关系。结果显示在黄河区域发现的蔓延的 Aegilops tauschii 很可能从伊朗被介绍—Aegilops tauschii 的差异中心。在黄河区域发现的蔓延的 Aegilops tauschii 人口可以在时间的各种各样的时期期间从西方和普通小麦(Triticum aestivum L.) 作为杂草种被带进中国的中央部分历史上。这发现经由丝绸道路从西方为普通小麦的介绍提供了充分证据进中国,并且也在在中国和西方之间的农业和另外的相关技术的交换表明了丝绸道路的重要角色。Huiting Wei Jun Li Zhengsong Peng Baorong Lu Zhijun Zhao Wuyun Yang 2008Progress in Natural Science:Materials International2008,18,12:10
4Molecular epidemiology demonstrates that imported and local strains circulated during the 2014 dengue outbreak in Guangzhou, China显示文摘The dengue virus(DENV) is a vital global public health issue. The 2014 dengue epidemic in Guangzhou, China, caused approximately 40,000 cases of infection and five deaths. We carried out a comprehensive investigation aimed at identifying the transmission sources in this dengue epidemic. To analyze the phylogenetics of the 2014 dengue strains, the envelope(E) gene sequences from 17 viral strains isolated from 168 dengue patient serum samples were sequenced and a phylogenetic tree was reconstructed. All 17 strains were serotype Ⅰ strains, including 8genotype Ⅰ and 9 genotype V strains. Additionally, 6 genotype Ⅰ strains that were probably introduced to China from Thailand before 2009 were widely transmitted in the 2013 and 2014 epidemics, and they continued to circulate until 2015, with one affinis strain being found in Singapore. The other 2 genotype Ⅰ strains were introduced from the Malaya Peninsula in 2014. The transmission source of the 9 genotype Ⅴ strains was from Malaysia in 2014. DENVs of different serotypes and genotypes co-circulated in the 2014 dengue outbreak in Guangzhou. Moreover, not only had DENV been imported to Guangzhou, but it had also been gradually exported, as the viruses exhibited an enzootic transmission cycle in Guangzhou.Geng Li Pan Pan Qiuyan He Xiujuan Kong Kailang Wu Wei Zhang Yuntao Liu Huiting Huang Jianbo Liu Zhongde Zhang De Wu Xiaoping Lai Xiaohong Liu Jianguo Wu 2017Virologica Sinica2017,32,1:7
5Advances in lung cancer screening and early detection显示文摘Lung cancer is associated with a heavy cancer-related burden in terms of patients’physical and mental health worldwide.Two randomized controlled trials,the US-National Lung Screening Trial(NLST)and Nederlands-Leuvens Longkanker Screenings Onderzoek(NELSON),indicated that low-dose CT(LDCT)screening results in a statistically significant decrease in mortality in patients with lung cancer,LDCT has become the standard approach for lung cancer screening.However,many issues in lung cancer screening remain unresolved,such as the screening criteria,high false-positive rate,and radiation exposure.This review first summarizes recent studies on lung cancer screening from the US,Europe,and Asia,and discusses risk-based selection for screening and the related issues.Second,an overview of novel techniques for the differential diagnosis of pulmonary nodules,including artificial intelligence and molecular biomarker-based screening,is presented.Third,current explorations of strategies for suspected malignancy are summarized.Overall,this review aims to help clinicians understand recent progress in lung cancer screening and alleviate the burden of lung cancer.Caichen Li Huiting Wang Yu Jiang Wenhai Fu Xiwen Liu Ran Zhong Bo Cheng Feng Zhu Yang Xiang Jianxing He Wenhua Liang 2022Cancer Biology & Medicine2022,19,5:6
6Spatial distribution of polychlorinated biphenyls in soil around a municipal solid waste incinerator显示文摘The impact of a typical municipal solid waste incinerator (MSWI) on polychlorinated biphenyl (PCB) concentrations in the surrounding soil was studied. Six stack gas samples were taken from the MSWI and 21 soil samples were collected from sampling sites between 300 and 1700 m from the MSWI stack. The total (∑PCB) concentrations of dioxin-like (dl) PCBs and indicator PCBs in the stack gas samples were between 3.41 and 34.3 ng/m3, and the corresponding toxic equivalents (TEQs) ranged from 4.45 to 66.9 pg WHO-TEQ/m3, with a mean of 28.6 pg WHO-TEQ/m3. A total of 2.43 g WHO-TEQ of PCBs per year was calculated to be released into the environment from MSWIs in China. The ∑PCB concentrations in the soil samples ranged from 28.0 to 264.4 pg/g, with mean and median values of 127.6 and 127.7 pg/g, respectively, while the TEQ values were between 0.020 and 0.18 pg WHO-TEQ/g, with mean and median values of 0.074 and 0.062 pg WHO-TEQ/g, respectively. Comparing this study with other studies performed around the world suggest that PCB emission from incinerators has a critical influence on PCB concentrations in the surrounding soil. An exponential function equation is proposed, which indicates a clear decline in ∑PCB concentrations with increasing distance from the stack. A contour map created using an ordinary kriging interpolation technique showed that a limited area (1250 m radius) from the stack was clearly influenced by PCB emission from the MSWI.Wenbin Liu Haifeng Li Zhenyu Tian Huiting Xie Jicheng Hu 2013Journal of Environmental Sciences2013,25,8:5
7Assessment of pollution of potentially harmful elements in soils surrounding a municipal solid waste incinerator, China显示文摘Ying Han Huiting Xie Wenbin Liu Haifeng Li Mengjing Wang Xuebin Chen Xiao Liao Nan Yan 2016Frontiers of Environmental Science & Engineering2016,10,6:5
8Lacustrine Shale Oil Resource Potential of Es3L Sub-Member of Bonan Sag, Bohai Bay Basin, Eastern China显示文摘Following shale gas, shale oil has become another highlight in unconventional hydrocarbon exploration and development. A large amount of shale oil has been produced from a host of marine shale in North America in recent years. In China, lacustrine shale, as the main source rock of conventional oil and gas, should also have abundant oil retained in place. In this study, geochemical and geologic characteristics of lacustrine shale from Es_3~L sub-member in Bonan sag were characterized by using total organic carbon(TOC), Rock-Eval pyrolysis, X-ray diffraction, and ?log R method. The results show that the Es_3~L sub-member shale have TOC contents ranging from 0.5 wt.% to 9.3 wt.%, with an average of 2.9 wt.%. The organic matter is predominantly Type I kerogen, with minor amounts of Type II1 kerogen. The temperature of maximum yield of pyrolysate(Tmax) values ranges from 424 to 447 °C, with an average of 440 °C, and vitrinite reflectance(Ro%) ranges from 0.7% to 0.9%, indicating most of shales are thermally mature. The dominant minerals of Es_3~L shale in Bonan sag are carbonates(including calcite and dolomite), averaging 51.82 wt.%, and the second minerals are clay(mostly are montmorillonite-illite-mixed layer and illite) and quartz, averaging about 18 wt.%. Finally, its shale oil resources were evaluated by using the volumetric method, and the evaluation result shows that the shale oil resource is up to 5.94 billion tons, and mostly Class I resource. Therefore, the exploration of the lacustrine shale oil of Es_3~L in Bonan sag should be strengthened.Shuangfang Lu Wei Liu Min Wang Linye Zhang Zhentao Wang Guohui Chen Dianshi Xiao Zhandong Li Huiting Hu 2017Journal of Earth Science2017,28,6:4
9Extraction and back-extraction behaviors of 14 rare earth elements from sulfuric acid medium by TODGA显示文摘The unique physical and chemical properties of rare earth elements lay the foundation for their extensive application. N,N,N',N' Tetra-octyl-3-oxopentanediamide(TODGA) is excellent in its ability of extracting rare earth elements and it is favored for green initiative. In this paper, the extraction and back-extraction of14 rare earth elements by TODGA were studied. Experiments show that in conditions of 6 mol/L sulfuric acid, the extraction temperature of 25 ℃,the phase ratio of 1:1 and 0.04 mol/LTODGA(aviation kerosene as the diluent), the extraction rates of 14 rare earth elements including lanthanum, cerium, praseodymium,neodymium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, and yttrium were 99.00%-99.73%. Mixed with hydrochloric acid and nitric acid(HCl 3.5 mol/L, HNO_30.5 mol/L), the recoveries of the 14 rare earth elements are 91.52%-99.91% when the extraction temperature is 25 ℃ and the ratio is 1:1. The following application is based on the optimum conditions above with practical samples(from the roasting production line of China North Rare Earth High-tech Company Limited) for extraction and back-extraction experiments. Experiments show that TODGA has excellent enrichment effect on 14 rare earth elements, the extraction rates are 91.36%-99.80%, the back-extraction rates are 87.29%-99.64% and the total recoveries are 81.19%-99.44%.Huiting Yuan Weixiang Hong Yushan Zhou Baisong Pu Aijun Gong Tao Xu Qishan Yang Fukai Li Lina Qiu Weiwei Zhang Yuning Liu 2018Journal of Rare Earths2018,36,6:4
10Paving the road toward the use ofβ-Fe2O3 in solar water splitting:Raman identification,phase transformation and strategies for phase stabilization显示文摘Althoughβ-Fe2O3 has a high theoretical solar-to-hydrogen efficiency because of its narrow band gap,the study ofβ-Fe2O3 photoanodes for water splitting is elusive as a result of their metastable nature.Raman identification ofβ-Fe2O3 is theoretically and experimentally investigated in this study for the first time,thus clarifying the debate about its Raman spectrum in the literature.Phase transformation ofβ-Fe2O3 toα-Fe2O3 was found to potentially take place under laser and electron irradiation as well as annealing.Herein,phase transformation ofβ-Fe2O3 toα-Fe2O3 was inhibited by introduction of Zr doping,andβ-Fe2O3 was found to withstand a higher annealing temperature without any phase transformation.The solar water splitting photocurrent of the Zr-dopedβ-Fe2O3 photoanode was increased by 500%compared to that of the pureβ-Fe2O3 photoanode.Additionally,Zr-dopedβ-Fe2O3 exhibited very good stability during the process of solar water splitting.These results indicate that by improving its thermal stability,metastableβ-Fe2O3 film is a promising photoanode for solar water splitting.Ningsi Zhang Xin Wang Jianyong Feng Huiting Huang Yongsheng Guo Zhaosheng Li Zhigang Zou 2020National Science Review2020,7,6:3
11Exploring facile strategies for high-oxidation-state metal nitride synthesis: carbonate-assisted one-step synthesis of Ta_3N_5 films for solar water splitting显示文摘Metal nitrides are widely studied due to their outstanding physical properties, including high hardness,high thermal and chemical stability, low electrical resistivity etc. Generally, metal nitrides can be obtained from the direct reaction of metal and ammonia/nitrogen. However, some of the metal nitrides,such as Ta_3N_5, cannot be synthesized by direct nitridation of metals. To achieve Ta_3N_5, high-oxidationstate Ta precursors like Ta_2O_5, NaTaO_3, TaS_3, K_6Ta_(10.8)O_(30), Ta(N(CH_3)_2)_5 and TaCl_5 have to be employed,which is a time-consuming and laborious process with the possibility of introducing undesirable impurities. Here taking Ta_3N_5 as an example, a facile carbonate-assisted one-step nitridation method is proposed, which enables the direct synthesis of high-oxidation-state metal nitride films from metal precursors under ammonia flow. The mechanism of the nitridation process has been studied, which carbon dioxide released from carbonates decomposition reacts with metallic Ta and assists the one-step conversion of metallic Ta to Ta_3N_5. The as-prepared Ta_3N_5 film, after modified with NiFe layered double hydroxide, exhibits promising water splitting performance and stability. This method avoids the preoxidation process of metal precursors in high-oxidation-state metal nitride synthesis, and may facilitate the direct fabrication of other important metal nitrides besides Ta_3N_5.Tao Fang Huiting Huang Jianyong Feng Yingfei Hu Yongsheng Guo Shiying Zhang Zhaosheng Li Zhigang Zou 2018Science Bulletin2018,63,21:3
12Reactive Inorganic Vapor Deposition of Perovskite Oxynitride Films for Solar Energy Conversion显示文摘The synthesis of perovskite oxynitrides,which are promising photoanode candidates for solar energy conversion,is normally accomplished by high-temperature ammonolysis of oxides and carbonate precursors,thus making the deposition of their planar films onto conductive substrates challenging.Here,we proposed a facile strategy to prepare a series of perovskite oxynitride films.Taking SrTaO_(2)N as a prototype,we prepared SrTaO_(2)N films on Ta foils under NH_(3) flow by utilizing the vaporized SrCl_(2)/SrCO_(3) eutectic salt.The SrTaO_(2)N films exhibit solar water-splitting photocurrents of 3.0 mA cm^(-2) at 1.23 V vs.RHE(reversible hydrogen electrode),which increases by 270%compared to the highest photocurrent(1.1 mA cm^(-2) at 1.23 V vs.RHE)of SrTaO_(2)N reported in the literature.This strategy may also be applied to directly prepare a series of perovskite oxynitride films on conductive substrates such as ATaO_(2)N(A=Ca,Ba)and ANbO_(2)N(A=Sr,Ba).Tao Fang Huiting Huang Jianyong Feng Yingfei Hu Qinfeng Qian Shicheng Yan Zhentao Yu Zhaosheng Li Zhigang Zou 2019Research2019,,1:2
13Polychlorinated dibenzo-p-dioxins and dibenzofurans and polychlorinated biphenyls in surface soil from the Tibetan Plateau显示文摘Concentrations of Polychlorinated dibenzo-p-dioxins and dibenzofurans(PCDD/Fs) and polychlorinated biphenyls(PCBs) in soil samples from Tibetan Plateau were determined. The average concentration of total 2,3,7,8-PCDD/Fs was(2.30 ± 1.02) pg/g, and World Health Organization Toxicity Equivalency(WHO-TEQ) average concentration was(0.013 ± 0.010)pg WHO-TEQ/g. The average concentration of ∑PCBs(7 indicator PCB and 12 dioxin like-PCB congeners) was(16.2 ± 9.25) pg/g, and WHO-TEQ average concentration was 0.043 ±0.049 pg WHO-TEQ/g. Comparing to previous studies in similar environmental conditions,PCDD/Fs and PCBs in this study showed a relatively lower concentration. The altitude dependences of PCDD/Fs and PCBs were also studied. Total organic carbon(TOC) normalized concentrations presented a quadratic relation with the altitudes, and an inflection could be found on the parabola of the total concentrations and some congeners of high concentration.The concentrations decreased with altitudes below about 4500 m above sea level(a.s.l.), while they increased with altitudes above it. These phenomena indicate that cold condensation of PCDD/Fs and PCBs would happen above 4500 m a.s.l, on the Tibetan Plateau.Zhenyu Tian Haifeng Li Huiting Xie Chen Tang Ying Han Mengjing Wang Wenbin Liu 2014Journal of Environmental Sciences2014,26,10:2
14Physical and chemical regeneration of zeolitic adsorbents for dye removal in wastewater treatment显示文摘Shaobin Wang Huiting Li Sujuan Xie et ol 2006Chemosphere2006,65,1:1
15Kinetic modelling and mechanism of dye adsorption on unburned carbon 显示文摘Shaobin Wang Huiting Li 2007Dyes and Pigments2007,72,3:1
16Kinetic modelling and mechanism of dye adsorption on unburned carbon 显示文摘Wang Shaobin Li Huiting 2007Dyes and Pigments2007,72,3:1
17Application of zeolite MCM-22 for basic dye removal from wastewater显示文摘Shaobin Wang Huiting Li Longya Xu 2006Journal of Colloid and Interface Science2006,295,:1
18Comparative study of thyroid puncture biopsy guided by contrast-enhancedultrasonography and conventional ultrasound显示文摘Fengsheng Li Huiting Luo 2013Experimental and Therapeutic Medicine2013,,:1
19A Programmable Hybrid DNA Nanogel for Enhanced Photodynamic Therapy of Hypoxic Glioma显示文摘Photodynamic therapy(PDT)is a promising cancer therapy due to the evident advantages of a rapid curative eff ect,minimal or non-invasiveness,and circumvention of drug resistance.However,the hydrophobicity of photosensitizers and the hypoxic tumor microenvironment in solid tumors reduce the therapeutic eff ect of PDT immensely.Herein,we construct a programmable hybrid mesoporous silica nanoparticle/DNA nanogel(H-DNA nanogel)for enhanced PDT.The H-DNA nanogel is constituted with a virus-like mesoporous silica nanoparticle(VMSN)as the core to provide an appropriate nano-interface and a self-assembly programmable DNA hydrogel layer based on rolling circle amplifi cation(RCA)as the shell.Two kinds of G-quadruplex structures inserted with a hemin and zinc phthalocyanine(ZnPc)photosensitizer are introduced into the H-DNA nanogel by base pairing.The two modules of G-quadruplex structure work as an oxygen supplement in the hypoxic tumor microenvironment and increase the yield of singlet oxygen,respectively.Our hybrid DNA nanogel system provides a modular platform for effi cient cancer PDT and has great potential in the broader biomedical fi eld.Ye Yuan Huiting Zhao Yunhua Guo Jianpu Tang Chunxia Liu Linghui Li Chi Yao Dayong Yang 2020Transactions of Tianjin University2020,26,6:1
20Concen-tration and distribution of PCNs in ambient soil of amunicipal solid waste incinerator 显示文摘Tian Zhenyu Li Haifeng Xie Huiting 2014Science of theTotal Environment2014,,491492:1
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