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| 1 | Characterizing the antibiotic resistance genes in a river catchment: Influence of anthropogenic activities显示文摘Previous studies on environmental antibiotics resistance genes(ARGs) have focused on the pollution sources such as wastewater treatment plants, aquaculture and livestock farms,etc. Few of them had addressed this issue in a regional scale such as river catchment. Hence,the occurrence and abundances of 23 ARGs were investigated in surface water samples collected from 38 sites which located from the river source to estuary of the Beijiang River.Among them, 11 ARGs were frequently detected in this region and 5 ARGs(sul I, sul II, tet B,tet C, and tet W) were selected for their distribution pattern analysis. The abundances of the selected ARGs were higher in the upstream(8.70 × 10~6 copies/ng DNA) and downstream areas(3.17 × 10~6 copies/ng DNA) than those in the midstream areas(1.23 × 10~6 copies/ng DNA), which was positively correlated to the population density and number of pollution sources. Pollution sources of ARGs along the Beijiang River not only had a great impact on the abundances and diversity, but also on the distribution of specific ARGs in the water samples. Both sul I and sul II were likely originated from aquaculture farms and animal farms,tet W gene was possibly associated with the mining/metal melting industry and the electric waste disposal and tet C gene was commonly found in the area with multiple pollution sources.However, the abundance of tet B was not particularly related to anthropogenic impacts. These findings highlight the influence of pollution sources and density of population on the distribution and dissemination of ARGs at a regional scale. | Haoyu Jiang Renjun Zhou Ying Yang Baowei Chen Zhineng Cheng Mengdi Zhang Jun Li Gan Zhang Shichun Zou | 2018 | Journal of Environmental Sciences2018，30，7： | 7 |
| 2 | Removal of elemental mercury by photocatalytic oxidation over La_(2)O_(3)/Bi_(2)O_(3)composite显示文摘La_(2)O_(3)/Bi_(2)O_(3)photocatalysts were prepared by impregnation of Bi_(2)O_(3)with an aqueous solution of lanthanum precursor followed by calcination at different temperatures.The composite materials were used for the first time for the photocatalytic removal of Hg~0 from a simulated flue gas under UV light irradiation.The results showed that the sample containing 6 wt.%La_(2)O_(3)and calcined at 500°C has the highest dispersion of the active sites,which was promoted by the strong interaction with the support(i.e.,the formation of Bi-O-La species).Since they are fully accessible on the surface,the material also exhibits excellent optical properties while the heterojunction formed in La_(2)O_(3)/Bi_(2)O_(3)promotes the separation and migration of photoelectron-hole pairs and thus Hg~0 oxidation efficiency is enhanced.The effects of the various factors(e.g.,the reaction temperature and composition of the simulated flue gas(i.e.,O_(2),NO,H_(2)O,and SO_(2)))on the efficiency of the Hg~0 photocatalytic oxidation were investigated.The results demonstrated that O_(2)and SO_(2)enhanced the efficiency of the reaction while the reaction temperature,NO,and H_(2)O had an inhibitory effect. | Renjun Li Yanan Zhou Xueqian Wang Langlang Wang Ping Ning Lei Tao Jun Cai | 2021 | Journal of Environmental Sciences2021，33，4： | 2 |
| 3 | Metal-organic Chemical Vapor Deposition of GaSb/GaAs Quantum Dots: the Dependence of the Morphology on Growth Temperature and Vapour V/Ⅲ Ratio显示文摘 | YANG Haoyu LIU Renjun LU You WANG Liankai LI Tiantian LI Guoxing ZHANG Yuantao ZHANG Baolin | 2014 | Chemical Research in Chinese Universities2014，30，1： | 2 |
| 4 | Microbial community coexisting with harmful alga Karenia mikimotoi and microbial control of algal bloom in laboratory显示文摘Algicidal bacteria have been frequently isolated from algal blooming areas.However,knowledge regarding the microbial communities coexisting with microalgae and their potential application in preventing harmful algal blooms(HABs)is limited.In this study,we investigated the composition of the microbial community coexisting with harmful alga Karenia mikimotoi and its responses to algal control via nutrient stimulation or by adding algicidal strain in microcosms.The microorganisms inhabiting the K.mikimotoi culture consisted of 24 identifi ed phyla,including dominant Proteobacteria(relative abundance 76.24%±7.28%)and Bacteroidetes(22.67%±8.32%).Rhodobacteraceae,Phaeodactylibacter,and Maritimibacter predominated during the algal cultivation.Both the added nutrient and fermentation broth of algicidal strain Pseudoalteromonas QF1 caused a massive death of K.mikimotoi and substantial changes in the coexisting microbial community,in which Rhodobacteraceae and Phaeodactylibacter signifi cantly decreased,while Halomonas and Alteromonas increased.Core operational taxonomic units(OTUs)analysis indicated that 13 OTUs belonging to Rhodobacteraceae,Maritimibacter,Marivita,Nisaea,Phaeodactylibacter,Citreicella,Halomonas,Alteromonas,Marinobacter,Muricauda,and Pseudoalteromonas dominated the changes of the microbial communities observed in the K.mikimotoi culture with or without treatments.Collectively,this study indicated that microbial community inhabiting K.mikimotoi culture includes potential algicidal bacteria,and improves our knowledge about microbial community succession during biocontrol of K.mikimotoi via nutrient stimulation or by adding isolated algicidal strains. | Li SUN Peike GAO Yu LI Chao WANG Ning DING Junfeng CHEN Yuhao SONG Chunchen LIU Lun SONG Renjun WANG | 2022 | Journal of Oceanology and Limnology2022，40，3： | 1 |
| 5 | Stud- ies on gas holdup in a bubble column operated at elevated temperatures 显示文摘 | ZOU Renjun JIANG Xinzhen LI Baozhang | 1988 | Industrial & Engineering Chemistry Research1988，27，10： | 1 |
| 6 | Spatiotemporal Variations of Microwave Land Surface Emissivity(MLSE)over China Derived from Four-Year Recalibrated Fengyun 3B MWRI Data显示文摘Microwave Land Surface Emissivity(MLSE)over China under both clear and cloudy sky conditions was retrieved using measurements of recalibrated microwave brightness temperatures(Tbs)from Fengyun-3B Microwave Radiation Imager(FY-3B MWRI),combined with cloud properties derived from Himawari-8 Advanced Himawari Imager(AHI)observations.The contributions from cloud particles and atmospheric gases to the upwelling Tbs at the top of atmosphere were calculated and removed in radiative transfer.The MLSEs at horizontal polarizations at 10.65,18.7,and 36.5 GHz during 7 July 2015 to 30 June 2019 over China showed high values in the southeast vegetated area and low values in the northwest barren,or sparsely vegetated,area.The maximum values were found in the belt area of the Qinling-Taihang Mountains and the eastern edge of the Qinghai-Tibet Plateau,which is highly consistent with MLSEs derived from AMSR-E.It demonstrates that the measurements of FY-3B MWRI Tbs,including its calibration and validation,are reliable,and the retrieval algorithm developed in this study works well.Seasonal variations of MLSE in China are mainly driven by the combined effects of vegetation,rainfall,and snow cover.In tropical and southern forest regions,the seasonal variation of MLSE is small due to the enhancement from vegetation and the suppression from rainfall.In the boreal area,snow causes a significant decrease of MLSE at 36.5 GHz in winter.Meanwhile,the MLSE at lower frequencies experiences less suppression.In the desert region in Xinjiang,increases of MLSEs at all frequencies are observed with increasing snow cover. | Rui LI Jiheng HU Shengli WU Peng ZHANG Husi LETU Yu WANG Xuewen WANG Yuyun FU Renjun ZHOU Ling SUN | 2022 | Advances in Atmospheric Sciences2022，39，9： | 1 |
| 7 | Cement mortar with enhanced flexural strength and durability-related properties using in situ polymerized interpenetration network显示文摘ABSTRACT The low flexural strength and high brittleness of cementitious materials impair their service life in building structures.In this study,we developed a new polymer-modified mortar by in situ polymerization of acrylamide(AM)monomers during the cement setting,which enhanced the flexural and durable performances of mortars.The mechanical properties,micro-and-pore structures,hydrated products,interactions between cement hydrates and polyacrylamide(PAM),and durability-related properties of the mortars were investigated comprehensively.Mortars with 5%PAM exhibited the best performance in terms of flexural strength among all the mixtures.The mechanical strength of cement pastes modified by in situ polymerization of AM monomers was significantly superior to those modified by PAM.The chemical interactions between the polymer molecules and cement hydrates together with the formation of polymer films glued the cement hydrates and polymers and resulted in an interpenetrating network structure,which strengthened the flexural strength.Reductions in porosity and calcium hydroxide content and improvement in capillary water absorption were achieved with the addition of PAM.Finally,the chloride resistance was significantly enhanced with the incorporation of PAM. | Qing LIU Renjun LIU Qiao WANG Rui LIANG Zongjin LI Guoxing SUN | 2021 | Frontiers of Structural and Civil Engineering2021，15，1： | 1 |
| 8 | Gram-scale synthesis of nanotherapeutic agents for CT/Tl-weighted MRI bimodal imaging guided photothermal therapy显示文摘Theranostic nanomedicine, which uses both imaging and therapeutic componentsfor simultaneous disease diagnosis and treatment, is expected to improve patienttreatment safety and outcomes by offering a more personalized approach tomedicine. However, the poor reproducibilities of nanomedicines synthesizedfor optimized bioavailability and their potential toxicity are impeding clinicaldevelopment. Moreover, milligram-scale synthetic methods are often inconsistentwhen transferred to mass production. To address these challenges, a facile,room temperature, aqueous phase synthesis of nanotheranostic agents usingclinically validated mesoporous silica and naturally derived polydopamine hasbeen developed. Since the synthetic procedure is simple and robust, and requiresonly simple mixing under ambient conditions, excellent batch-to-batch consistencyhas been achieved. As a result, this process can be easily scaled-up to producegram-scale batches with physicochemical parameters similar to those of materialssynthesized in smaller batches. The resulting nanotheranostic agents exhibitefficient X-ray tomography and Tl-weighted magnetic resonance image contrastenhancing abilities due to their chemically ligated, benign Bi3~ and Fe3~ ions.Furthermore, the inclusion of a polydopamine shell makes the nanoparticlesurface easy to functionalize and renders these materials highly efficient asphotothermal agents. These nanotheranostic agents are suitable for mass productionand for potential applications in multimodal imaging-guided therapy in clinicalsettings. | Xianguang Ding Xiaoxia Hao Dongdong Fu Mengxin Zhang Tian Lan Chunyan Li Renjun Huang Zhijun Zhang Yonggang Li Qiangbin Wang Jiang Jiang | 2017 | Nano Research2017，10，9： | 0 |
| 9 | Effect of Anthracene on the Interaction Between Platymonas helgolandica var. tsingtaoensis and Heterosigma akashiwo in Laboratory Cultures显示文摘Two species of marine phytoplankton, Platymonas helgolandica var. tsingtaoensis and Heterosigma akashiwo, were cultivated in bi-algal cultures to investigate the effect of anthracene(ANT) on the interaction between them. Without ANT, H. akashiwo out-competed P. helgolandica at low initial biomass ratios(P. helgolandica(P): H. akashiwo(H) = 1:4 and 1:1), but not at the highest(P:H = 4:1). This observation was consistent with the description in Lotka-Volterra two species competition model. It was found that P. helgolandica was excluded at low initial biomass ratios, while the unstable equilibrium between two species was predicted at the highest. For both species, carrying capacity and maximal specific growth rate decreased in bi-algal cultures compared to those in monocultures. H. akashiwo exhibited a higher sensitivity to ANT than P. helgolandica. This resulted markedly in a reduced cell density of H. akashiwo but an increased cell density of P. helgolandica. Carrying capacity of P. helgolandica was consistently higher in bi-algal cultures with ANT than those without ANT, suggesting that ANT, through the elimination of H. akashiwo, generated the dominance of P. helgolandica independently of initial biomass ratios. This study showed a density-dependent effect of harmful alga(H. akashiwo) on dietary alga(P. helgolandica), and indicated that ocean pollutant ANT could induce the succession of marine phytoplankton. | BI Rong WANG You WANG Renjun LI Wei TANG Xuexi | 2015 | Journal of Ocean University of China2015，14，1： | 0 |
| 10 | Analysis of the Lost Circulation Problem显示文摘The well-known“lost circulation”problem refers to the uncontrolled flow of whole mud into a formation.In order to address the problem related to the paucity of available data,in the present study,a model is introduced for the lost-circulation risk sample profile of a drilled well.The model is built taking into account effective data(the Block L).Then,using a three-dimensional geological modeling software,relying on the variation function and sequential Gaussian simulation method,a three-dimensional block lost-circulation risk model is introduced able to provide relevant information for regional analyses. | Xingquan Zhang Renjun Xie Kuan Liu Yating Li Yuqiang Xu | 2023 | Fluid Dynamics & Materials Processing2023，19，6： | 0 |
| 11 | Proteolytic cleavage is required for functional neuroligin 2 maturation and trafficking in Drosophila显示文摘Neuroligins (Nlgs ) 是在触处开发和功能起必要作用的 transmembrane 房间粘附分子。在 neuroligin 基因的基因变化与象孤独性那样的一些 neurodevelopmental 混乱被连接了。这些变异的 Nlgs 主要在 endoplasmic 蜂窝胃被保留(嗯) 。然而,位于正常 Nlg 成熟和 trafficking 下面的机制仍然保持大部分未知。这里,我们发现那果蝇 neuroligin (DNlg2 ) 2 在整个发展阶段在许多果蝇纸巾在 ER 经历解朊的劈开。包含 Y642T698 的一个区域为这个过程被要求。不成熟的非劈得开的 DNlg2 在 ER 被保留并且非功能。DNlg2 的 C 终端碎片而不是全身或非劈得开的 DNlg2 能救 dnlg2 删除导致的神经与肌的连接缺点和 GluRIIB 减小。有趣地,在 DNlg2 的联系孤独性的 R598C 变化在 DNlg2 解朊的过程导致类似的显著缺点,揭示在孤独性致病的不适当的 Nlg 劈开的一个潜在的角色并且嗯出口。一起,我们的调查结果揭开在 ER 经由解朊的劈开控制 DNlg2 成熟和 trafficking 的特定的机制,建议 Nlgs 的使不安的解朊的劈开多半贡献孤独性混乱。 | Renjun Tu Jinjun Qian Menglong Rui Nana Tao Mingkuan Sun Yan Zhuang Huihui Lv Junhai Han Moyi Li Wei Xie | 2017 | Journal of Molecular Cell Biology2017，9，3： | 0 |
| 12 | Developmental toxicity assessment of neonicotinoids and organophosphate esters with a human embryonic stem cell-and metabolism-based fast-screening model显示文摘In recent years,neonicotinoids(NEOs)and organophosphate esters(OPEs)have been widely used as substitutes for traditional pesticides and brominated fame-retardants,respectively.Previous studies have shown that those compounds can be frequently detected in environmental and human samples,are able to penetrate the placental barrier,and are toxic to animals.Thus,it is reasonable to speculate that NEOs and OPEs may have potential adverse effects in humans,especially during development.We employed a human embryonic stem cell differentiation-and liver S9 fraction metabolism-based fast screening model to assess the potential embryonic toxicity of those two types of chemicals.We show that four NEO and five OPE prototypes targeted mostly ectoderm specification,as neural ectoderm and neural crest genes were down-regulated,and surface ectoderm and placode markers up-regulated.Human liver S9 fraction's treatment could generally reduce the effects of the chemicals,except in a few specific instances,indicating the liver may detoxify NEOs and OPEs.Our findings suggest that NEOs and OPEs interfere with human early embryonic development. | Shuxian Zhang Miaomiao Zhao Shichang Li Renjun Yang Nuoya Yin Francesco Faiola | 2024 | Journal of Environmental Sciences2024，，3： | 0 |
| 13 | Feasibility Analysis and Policy Recommendations for Production of Hybrid Rice Seed in Foreign Countries显示文摘In the economic new normal,production of hybrid rice seed in foreign countries is the necessity for reducing farmland area occupied by seed production,for ensuring national grain security,realizing cost reducing and quality improving of hybrid rice seed,strengthening competitive power at international market,guiding seed industry of China to go out,building transnational seed groups with core competitive power,establishing close relationship with developing countries,promoting the construction of One Belt One Road strategy,serving overall situation of diplomacy,and setting up excellent international image. It is feasible to produce hybrid seed in foreign countries considering( i) high overall national strength of China,( ii) rapid and healthy growth of China's seed industry and increasingly mature hybrid rice seed production technologies,( iii) excellent climatic conditions of foreign host countries of seed production,and( iv) low land and labor price of foreign host countries of seed production. However,there are social and policy risks,technology and trade barrier risks,market,production,and other risks for production of hybrid rice seed in foreign countries. In view of these,it came up with recommendations,including allowing delivering parent seeds of hybrid rice to foreign countries,allowing delivering hybrid rice seed to China,solving the problem of ' opening in protection,and protection in opening',and formulating a package of support policies. | Hongbo DUAN Qianyu YANG Xiangping LIU Zhixin LI Renjun WANG | 2016 | Asian Agricultural Research2016，8，10： | 0 |
| 14 | Facile Synthesis of Unsymmetrical N-Aryl-2,2-di(1H-indol-3-yl) Acetamide Derivatives显示文摘A facile and highly efficient method has been developed for the synthesis of unsymmetrical N-aryl-2,2-di(1H-indol-3-yl)acetamide derivatives by regioselective Friedel-Crafts alkylation of the N-aryl-2-hydroxy-2-(1H-indol-3-yl) acetamide derivatives with various indoles catalyzed by 2 mol/L H2SO4 at room temperature in ashort reaction time, the yield was up to 94%. | ZHOU Yan LI Renjun WANG Xiaolong HE Ling GUAN Mei WU Yong | 2016 | Chemical Research in Chinese Universities2016，32，6： | 0 |
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