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304篇 您的检索式:作者名="Haiting"
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1Simultaneous removal of ammonia and N-nitrosamine precursors from high ammonia water by zeolite and powdered activated carbon显示文摘When adding sufficient chlorine to achieve breakpoint chlorination to source water containing high concentration of ammonia during drinking water treatment, high concentrations of disinfection by-products(DBPs) may form. If N-nitrosamine precursors are present, highly toxic N-nitrosamines, primarily N-nitrosodimethylamine(NDMA), may also form. Removing their precursors before disinfection should be a more effective way to minimize these DBPs formation. In this study, zeolites and activated carbon were examined for ammonia and N-nitrosamine precursor removal when incorporated into drinking water treatment processes.The test results indicate that Mordenite zeolite can remove ammonia and five of seven N-nitrosamine precursors efficiently by single step adsorption test. The practical applicability was evaluated by simulation of typical drinking water treatment processes using six-gang stirring system. The Mordenite zeolite was applied at the steps of lime softening, alum coagulation, and alum coagulation with powdered activated carbon(PAC) sorption. While the lime softening process resulted in poor zeolite performance, alum coagulation did not impact ammonia and N-nitrosamine precursor removal. During alum coagulation, more than67% ammonia and 70%–100% N-nitrosamine precursors were removed by Mordenite zeolite(except 3-(dimethylaminomethyl)indole(DMAI) and 4-dimethylaminoantipyrine(DMAP)). PAC effectively removed DMAI and DMAP when added during alum coagulation. A combination of the zeolite and PAC selected efficiently removed ammonia and all tested seven N-nitrosamine precursors(dimethylamine(DMA), ethylmethylamine(EMA), diethylamine(DEA), dipropylamine(DPA), trimethylamine(TMA), DMAP, and DMAI) during the alum coagulation process.Runmiao Xue Ariel Donovan Haiting Zhang Yinfa Ma Craig Adams John Yang Bin Hua Enos Inniss Todd Eichholz Honglan Shi 2018Journal of Environmental Sciences2018,30,2:7
2Pollen indicators of human activity显示文摘The study of past human activities and their environmental effect is high in the agenda of global change research. A record of pollen assemblages is one of the most common proxies employed for detecting the impact of human activities on the landscape. In this review, we provide a summary and discussion on the recent progress on the use of pollen as indicators of human activity. For most of the studies related to human impact, the following features have been focused on: (1) decline of certain tree pollen; (2) flourishing of pioneer plant pollen; (3) concomitant occurrence of cereal-type pollen and cropland weed pollen; (4) abrupt changes in pollen concentration and richness; and (5) occurrence of nitrophi- lous plants and pastoral weed. Pollen of anthropogenic plants (weeds and cereal-type plants) is ideal indicators of human activities. Different types of human activities will result in different pollen assem- blages. Patterns of human-impacted pollen spectra would vary between forested areas and grassland. In the study of human impact with pollen data, high resolution in both time and space must be consid- ered. High resolution in space will help to inform the complexity of the landscape. More importantly, it can help to reveal the interference of human activities on the landscape, hence avoiding the bias cre- ated by the limited data points. Fine resolution in time will make accurate recording of short-lived events possible, hence avoiding the exclusion of events related to human activities. The combination of palynology with other proxies will help to decipher more accurately landscape changes through time. Charcoal is a particularly useful proxy for recording the disturbance of humans on vegetation. Its peak values usually occur with pronounced drop of tree pollen and significant rise of anthropogenic pollen.LIYiYin ZHOU LiPing GUI HaiTing 2008Chinese Science Bulletin2008,53,9:7
3Acoustic reflection of rib-stiffened double plates coated with a viscoelastic layer显示文摘To predict sound-absorbing performance of anechoic materials,the acoustic reflection problem of a viscoelastic layer backed with periodically rib-stiffened infinite double plates is studied in this paper.The reason why structural theories of plates are not applicable to viscoelastic plates is explained through comparing dispersion and attenuation curves of flexural waves with those of Lamb waves.As a result,(visco-)elastic theory is adopted to deal with(visco-)elastic plates,and ribs are treated by structural theories of plates.The coupling between ribs and plates are solved by Hull's method,and solution of the reflected field is obtained.The accuracy of present method is validated by comparing with the results by the structural theories of plates.The influence of a backing on the acoustic reflection of the viscoelatic layer is analyzed by computing reflection coefficients.Performances of different viscoelastic materials are evaluated by the average reflection coefficients.The computational results show that,influence of a backing on the acoustic reflection cannot be suppressed by the viscoelastic materials in low frequencies.The resonance is determined by the coupling of the fluid layer and the double plates.And ribs,which are coupled with the double plates,mainly reduce the acoustic reflection.GONG Jiayuan AN Junying MA Li XU Haiting 2014Chinese Journal of Acoustics2014,33,3:6
4Vegetation reconstruction of Bronze Age by using microscopic structure of charcoals显示文摘The microscopic structure of charcoals was determined in two sites of Bronze Age, Chifeng area by using the scanning electronic microscope. The results showed that these charcoals are all timbers of Mongolian oak (Quercus mongolica). It has powerful climatic indicative significance. Based on the assemblage of pollen composition, their eco-climatic index and character of community, the vegetation reconstruction of Bronze Age was obtained. The reconstruction showed that the zonal vegetation was Mongolian oak forest and Chinese pine forest in the loess hills in the Chifeng area, which suggested that the climatic condition was warmer and wetter at that time than present time.CUI Haiting LI Yiyin HU Jinming YAO Xishen LI Yang 2002Chinese Science Bulletin2002,47,23:6
5Comparison of nonhuman primates identified the suitable model for COVID-19显示文摘Identification of a suitable nonhuman primate(NHP)model of COVID-19 remains challenging.Here,we characterized severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection in three NHP species:Old World monkeys Macaca mulatta(M.mulatta)and Macaca fascicularis(M.fascicularis)and New World monkey Callithrix jacchus(C.jacchus).Infected M.mulatta and M.fascicularis showed abnormal chest radiographs,an increased body temperature and a decreased body weight.Viral genomes were detected in swab and blood samples from all animals.Viral load was detected in the pulmonary tissues of M.mulatta and M.fascicularis but not C.jacchus.Furthermore,among the three animal species,M.mulatta showed the strongest response to SARS-CoV-2,including increased inflammatory cytokine expression and pathological changes in the pulmonary tissues.Collectively,these data revealed the different susceptibilities of Old World and New World monkeys to SARS-CoV-2 and identified M.mulatta as the most suitable for modeling COVID-19.Shuaiyao Lu Yuan Zhao Wenhai Yu Yun Yang Jiahong Gao Junbin Wang Dexuan Kuang Mengli Yang Jing Yang Chunxia Ma Jingwen Xu Xingli Qian Haiyan Li Siwen Zhao Jingmei Li Haixuan Wang Haiting Long Jingxian Zhou Fangyu Luo Kaiyun Ding Daoju Wu Yong Zhang Yinliang Dong Yuqin Liu Yinqiu Zheng Xiaochen Lin Li Jiao Huanying Zheng Qing Dai Qiangming Sun Yunzhang Hu Changwen Ke Hongqi Liu Xiaozhong Peng 2020Signal Transduction and Targeted Therapy2020,5,1:5
6Ablative fractional CO_(2)laser surgery improving sleep quality,pain and pruritus in adult hypertrophic scar patients:a prospective cohort study显示文摘Background:Poor sleep quality is associated with a decrease in quality of life in patients with major burn scars,combined with pruritus and pain.Few interventions have been reported to improve the sleep quality of patients with scars.In the current prospective cohort study,we investigated the efficacy of CO_(2)-ablative fractional laser(AFL)surgery vs conventional surgery in post-burn patients with hypertrophic scars with sleep quality as the primary study outcome.Methods:In total 68 consecutive patients undergoing scar surgical treatment were recruited,including a CO_(2)-AFL surgery cohort(n=35)and a conventional surgery cohort(n=33).A subgroup from the AFL cohort was selected.Sleep quality,pain and pruritus were evaluated.Multiple linear regression analyses were performed to reveal the effect of CO_(2)-AFL surgery.Results:The CO_(2)-AFL surgery cohort had significantly lower Pittsburgh sleep quality index(PSQI)global scores than the conventional surgery cohort after the last surgical treatment.In the subgroup of patients receiving hardware sleep monitoring,CO_(2)-AFL markedly increased deep sleep time,deep sleep efficiency and reduced initial sleep latency.Compared to the conventional surgery cohort,the CO_(2)-AFL cohort presented significantly lower pain and pruritus scores.Correlation analysis showed pain and pruritus were significantly associated with PSQI scores,and there were also significant correlations between pain and pruritus scores.Multiple linear regression analysis showed that surgery method was negatively linearly correlated with visual analog scale(VAS)pain score,brief pain inventory(BPI)total,VAS pruritus score,5-D itch scale total,four-item itch questionnaire(FIIQ)total and PSQI total.Conclusions:CO_(2)-AFL surgery significantly improved sleep quality and reduced pain and pruritus of hypertrophic scar patients.The alleviation of sleep disorder was associated with improvement of deep sleep quality including deep sleep time and deep sleep deficiency.Trial registration:The Chinese Clinical Trial Registry(ChiCTR200035268)approved retrospectively registration on 5 Aug 2020.Kaiyang Lv Huazhen Liu Haiting Xu Caixia Wang Shihui Zhu Xiaozhen Lou Pengfei Luo Shichu Xiao Zhaofan Xia 2021Burns & Trauma2021,9,1:4
7Numerical quadrature for singular and near-singular integrals of boundary element method and its applications in large-scale acoustic problems显示文摘The numerical quadrature methods for dealing with the problems of singular and near-singular integrals caused by Burton-Miller method are proposed,by which the conventional and fast multipole BEMs(boundary element methods) for 3D acoustic problems based on constant elements are improved.To solve the problem of singular integrals,a Hadamard finite-part integral method is presented,which is a simplified combination of the methods proposed by Kirkup and Wolf.The problem of near-singular integrals is overcome by the simple method of polar transformation and the more complex method of PART(Projection and Angular & Radial Transformation).The effectiveness of these methods for solving the singular and near-singular problems is validated through comparing with the results computed by the analytical method and/or the commercial software LMS Virtual.Lab.In addition,the influence of the near-singular integral problem on the computational precisions is analyzed by computing the errors relative to the exact solution.The computational complexities of the conventional and fast multipole BEM are analyzed and compared through numerical computations.A large-scale acoustic scattering problem,whose degree of freedoms is about 340,000,is implemented successfully.The results show that,the near singularity is primarily introduced by the hyper-singular kernel,and has great influences on the precision of the solution.The precision of fast multipole BEM is the same as conventional BEM,but the computational complexities are much lower.GONG Jiayuan AN Junying MA Li XU Haiting 2017Chinese Journal of Acoustics2017,36,3:4
8Inferring trophic variation for Antarctic krill(Euphausia superba) in the Antarctic Peninsula from the austral fall to early winter using stable isotope analysis显示文摘The Antarctic krill(Euphausia superba) is a key species in the Southern Ocean ecosystem and an important link in the food web of the Antarctic ecosystem. The trophic information for this species during the transition from the austral fall to the winter is important to understand its poorly known overwintering mechanisms. However, the few studies on the topic differ in their results, in terms of both spatial and temporal variables. We investigated the size dependence and monthly and regional variation in δ^(13) C and δ^(15) N values of adult krill in the Antarctic Peninsula, in the austral fall(April to May) and the early winter(June). We aimed to examine the trophic variations of krill occurred during this period, and the relationship between krill and their feeding environment in the Antarctic marine ecosystem. The following results were obtained:(1) no significant relationship was observed between size and the δ13 C value of krill, but the δ15 N value of krill presented a remarkable association with size;(2)the δ13 C values of krill increased during the austral fall, but no remarkable variation existed at the onset of winter,and the δ15 N values were not significant different during this period;(3) mean δ15 N values of krill differed significantly between the Bransfield Strait and the South Shetland Islands. Our data imply that adult krill present size-, season-, and region-dependent trophic variation during the transition from austral fall to early winter in the Antarctic Peninsula.ZHU Guoping ZHANG Haiting SONG Qi YANG Yang WANG Shaoqin YANG Qingyuan 2018Acta Oceanologica Sinica2018,37,6:3
9Current approaches to reduce or eliminate mitochondrial DNA mutations显示文摘Mitochondrial DNA(mt DNA)mutations have been implicated in a broad range of disorders which severely affect human health(Wallace,1999).Some drugs have been developed to slow down pathological changes of mitochondrial disorders.However,there is no effective treatment for patients with mt DNA mutations.mt DNA is less protected and has fewer repair mechanisms than nuclear DNA(n DNA).Such a reality results in a much higherLiang Yang Tingfang Mei Xiaobing Lin Haite Tang Yi Wu Rui Wang Jinglei Liu Zahir Shah Xingguo Liu 2016Science China(Life Sciences)2016,59,5:3
10Hypoxia induces T-cell apoptosis by inhibiting chemokine C receptor 7 expression:the role of adenosine receptor A2显示文摘Hypoxia is a major characteristic of the tumor microenvironment,and its effects on immune cells are proposed to be important factors for the process of tumor immune escape.It has been reported that hypoxia affects the function of dendritic cells and the antitumor function of T cells.Here we discuss the effects of hypoxia on T-cell survival.Our results showed that hypoxia induced apoptosis of T cells.Adenosine and adenosine receptors(AR)are important to the hypoxia-related signaling pathway.Using AR agonists and antagonists,we demonstrated that hypoxia-induced apoptosis of T cells was mediated by A^(2a)and A^(2b)receptors.Furthermore,we are the first,to our knowledge,to report that hypoxia significantly inhibited the expression of chemokine C receptor 7(CCR7)of T cells via the A^(2)R signal pathway,perhaps representing a mechanism of hypoxia-induced apoptosis of T cells.Collectively,our research demonstrated that hypoxia induces T-cell apoptosis by the A^(2)R signaling pathway partly by suppressing CCR7.Blocking the A^(2)R signaling pathway and/or activation of CCR7 can increase the anti-apoptosis function of T cells and may become a new strategy to improve antitumor potential.Jintang Sun Yan Zhang Meixiang Yang Yun Zhang Qi Xie Zewu Li Zhaogang Dong Yongmei Yang Biping Deng Alei Feng Weixu Hu Haiting Mao Xun Qu 2010Cellular & Molecular Immunology2010,7,1:3
11Failure behavior of cellular titanium under dynamic loading显示文摘The dynamic compressive deformation of cellular titanium with regularly distributed cylindrical pores is investigated to evaluate the effect of shock attenuation and obtain the shock Hugoniot relationship of the material. Dynamic compression experiments are conducted at room temperature using a single-stage light gas gun. The Hugoniot relations between shock wave velocity and particle velocity for the cellular titanium samples with porosities 20% and 30% are obtained. The shock response of the regular cellular titanium shows a clear wave attenuation effect. Numerical simulations are also conducted to supplement the experimental study.Inelastic deformation is observed in the samples using optical micrographs, indicating that the deformation of pores contributes significantly to the shock wave attenuation of the cellular titanium material.REN HuiLan WANG Jing HAO Li SHEN HaiTing 2017Science China(Technological Sciences)2017,60,4:3
12Sphingosine-1-Phosphate Links Persistent STAT3 Activation, Chronic Intestinal Inflammation, and Development of Colitis-Associated Cancer显示文摘Jie Liang Masayuki Nagahashi Eugene Y. Kim Kuzhuvelil B. Harikumar Akimitsu Yamada Wei-Ching Huang Nitai C. Hait Jeremy C. Allegood Megan M. Price Dorit Avni Kazuaki Takabe Tomasz Kordula Sheldon Milstien Sarah Spiegel 2013Cancer Cell2013,,:3
13Particulate matter pollution in Kunshan High-Tech zone: Source apportionment with trace elements, plume evolution and its monitoring显示文摘Particulate matter(PM) in the Kunshan High-Tech zone is studied during a three-month campaign. PM and trace elements are measured by the online pollution monitoring, forecastwarning and source term retrieval system AS3. Hourly measured concentrations of PM_(10), PM_(2.5) and 16 trace elements in the PM_(2.5) section(Ca, Pb, Cu, Cl, V, Cr, Fe, Ti, Mn, Ni, Zn, Ga, As, Se, Sr, Ba)are focused. Source apportionment of trace elements by Positive Matrix Factorization modeling indicates that there are five major sources, including dust, industrial processing, traffic,combustion, and sea salt with contribution rate of 23.68%, 21.66%, 14.30%, 22.03%, and 6.89%,respectively. Prediction of plume dispersion from concrete plant and traffic emissions shows that PM_(10) pollution of concrete plant is three orders of magnitude more than that of the traffic. The influence range can extend to more than 3 km in 1 hr. Because the footprint of the industrial plumes is constantly moving according to the local meteorological conditions, the fixed monitoring sites scattered in a few hundred meters haven't captured the heaviest pollution plume at the local scale of a few km^2. As a more intensive monitoring network is not operationally possible, the use of online modeling gives accurate and quantitative information of plume location, which increases the spatial pollution monitoring capacity and improves the understanding of measurement data. These results indicate that the development of the AS3 system, which combines monitoring equipment and air pollution modeling systems, is beneficial to the real-time pollution monitoring in the industrial zone.Suwei Zhang Qijie Zhang Armand Albergel Didier Buty Liangmin Yu Haiting Wang Wuxia Bi Peng Cheng Fu Chen Jun Fang Ruirui Hou Xudong Luan Changgan Shu Jingjing Su 2018Journal of Environmental Sciences2018,30,9:3
14Formation and speciation of disinfection byproducts during chlor(am)ination of aquarium seawater显示文摘The chemistry associated with the disinfection of aquarium seawater is more complicated than that of freshwater, therefore limited information is available on the formation and speciation of disinfection byproducts(DBPs) in marine aquaria. In this study, the effects of organic precursors, bromide(Br-) and pre-ozonation on the formation and speciation of several typical classes of DBPs, including trihalomethanes(THM4), haloacetic acids(HAAs),iodinated trihalomethanes(I-THMs), and haloacetamides(HAc Ams), were investigated during the chlorination/chloramination of aquarium seawater. Results indicate that with an increase in dissolved organic carbon concentration from 4.5 to 9.4 mg/L, the concentrations of THM4 and HAAs increased by 3.2–7.8 times under chlorination and by 1.1–2.3 times under chloramination. An increase in Br-concentration from 3 to 68 mg/L generally enhanced the formation of THM4, I-THMs and HAc Ams and increased the bromine substitution factors of all studied DBPs as well, whereas it impacted insignificantly on the yield of HAAs. Pre-ozonation with 1 mg/L O3 dose substantially reduced the formation of all studied DBPs in the subsequent chlorination and I-THMs in the subsequent chloramination. Because chloramination produces much lower amounts of DBPs than chlorination, it tends to be more suitable for disinfection of aquarium seawater.Haiting Zhang Huiyu Dong Craig Adams Zhimin Qiang Gang Luan Lei Wang 2015Journal of Environmental Sciences2015,27,7:2
15Characteristics of Staring Imaging Spectrometer and Its Application Prospect in Asteroid Exploration显示文摘Compared with traditional ground asteroid obsen/ations,deep space exploration is an important way to explore and comprehensively understand the characteristics of asteroids.Imaging spectrometer integrates morphological measurement and spectral measurement,and has the ability to acquire image and spectral data simultaneously.By combining morphometry and spectrometry,it is possible to achieve efficient identification and quantitative analysis of the chemical comp orients of the explorati on target,and has the strong advantage in the field of asteroid exploration.This paper analyzes the principle of the staring imaging spectrometer and the technological progress in various countries.Based on the requirements of light,small payloads and the space characteristics of spectroscopic devices,the application of staring imaging spectrometer is discussed.Then,this paper introduces the conceptual design of an acousto-optic staring imaging spectrometer,combined with the technical characteristics of its area array stare frame imaging and fast electronic control spectrum selection.An experimental verification is carried out,which provides a reference for the feasibility of this type of instrument in asteroid exploration.HE Zhiping ZHAO Haiting LI Jinning 2019Aerospace China2019,20,3:2
16Pharmacology of Drugs That Alert Multidrug Resistance in Cancer显示文摘 Hait WN 1990Phamacol Rev1990,42,:1
17Anti-inflammatory effects of moxifloxacin on IL-8, IL-1beta and TNF-alpha secretion and NFkappaB and MAP-kinase activation in human monoeytes stimulated with Aspergillus fumigatus 显示文摘Shalit I Halperin D Haite D 2006J Araimicrob Chemother2006,57,2:1
18Involvement of phosphatidylinositol-3-kinase in membrane ruffling induced by P-glycoprotein substrates in multidrug-resistant carcinoma cells显示文摘Yang JM Vassil A Hait WN 2002Biochem Pharmacol2002,63,5:1
19Patient and general practioner delays in acute myocardial infarction显示文摘Rawles JM Haites NE 1988Br Med J1988,296,:1
20A new larval species of Allothrombium ( Acari : Prostigmata: Trombidiidae) from Sicily 显示文摘HAIT LINGER R 2012Persian Journal of Acarology2012,1,1:1
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