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| 1 | Antimony oxidation and adsorption by in-situ formed biogenic Mn oxide and Fe–Mn oxides显示文摘Antimony(Sb), which can be toxic at relatively low concentrations, may co-exist with Mn(Ⅱ)and/or Fe(Ⅱ) in some groundwater and surface water bodies. Here we investigated the potential oxidation and adsorption pathways of Sb(Ⅲ and V) species in the presence of Mn(Ⅱ) and Mn-oxidizing bacteria, with or without Fe(Ⅱ). Batch experiments were conducted to determine the oxidation and adsorption characteristics of Sb species in the presence of biogenic Mn oxides(BMOs), which were formed in-situ via the oxidation of Mn(Ⅱ) by a Mn-oxidizing bacterium(Pseudomonas sp. QJX-1). Results indicated that Sb(Ⅲ) ions could be oxidized to Sb(V) ions by BMO, but only Sb(V) originating from Sb(Ⅲ) oxidation was adsorbed effectively by BMO. Introduced Fe(Ⅱ) was chemically oxidized to Fe OOH, the precipitates of which mixed with BMO to form a new compound, biogenic Fe–Mn oxides(BFMO). The BMO part of the BFMO mainly oxidized and the Fe OOH of the BFMO mainly adsorbed the Sb species. In aquatic solutions containing both As(Ⅲ) and Sb(Ⅲ), the BFMO that formed in-situ preferentially oxidized Sb over As but adsorbed As more efficiently. Chemical analysis and reverse transcription real-time polymerase chain reaction revealed that the presence of Fe(Ⅱ), As(Ⅲ) and Sb(Ⅲ) accelerated the oxidation of Mn(Ⅱ) but inhibited the activity of Mn-oxidizing bacteria. These results provide significant insights into the biogeochemical pathways of Sb, Mn(Ⅱ) in aquatic ecosystems, with or without Fe(Ⅱ). | Yaohui Bai William A.Jefferson Jinsong Liang Tingting Yang Jiuhui Qu | 2017 | Journal of Environmental Sciences2017，29，4： | 12 |
| 2 | 福建南部沿海的江豚显示文摘在闽南厦门至漳浦沿海获22只江豚,根据背部棘状小结节的数量与分布,可明显分为两个亚种,即指名亚种(N.p.phocaenoides,81%)和北方亚种(N.p.sunameri, 19%),表明本海域是几个亚种的混栖地带,分析了这些江豚的外部形态和种群结构,测定了脂肪层及各内脏的重量。 | 黄宗国 刘文华 郑成兴 李传燕 王建军 Thomas A.Jefferson | 2000 | 海洋学报2000，22，5： | 6 |
| 3 | Assaying Chimeric Genes in Plants:The GUS Gene Fusion System显示文摘 | Richard A.Jefferson | | 0，，01： | 1 |
| 4 | Photocatalytic properties of TiO2 modified with gold nanoparticles in the degradation of 4-chlorophenol in aqueous solution显示文摘 | Alexander Orlov David A.Jefferson Norman Macleod Richard M.Lambert | | 0，，1： | 1 |
| 5 | Genetic diseases conferring resistance to infectious diseases显示文摘This review considers available evidence for mechanisms of conferred adaptive advantages in the face of specific infectious diseases.In short,we explore a number of genetic conditions,which carry some benefits in adverse circumstances including exposure to infectious agents.The examples discussed are conditions known to result in resistance to a specific infectious disease,or have been proposed as being associated with resistance to various infectious diseases.These infectious diseasedgenetic disorder pairings include malaria and hemoglobinopathies,cholera and cystic fibrosis,tuberculosis and Tay-Sachs disease,mycotic abortions and phenylketonuria,infection by enveloped viruses and disorders of glycosylation,infection by filoviruses and NiemannePick C1 disease,as well as rabies and myasthenia gravis.We also discuss two genetic conditions that lead to infectious disease hypersusceptibility,although we did not cover the large number of immunologic defects leading to infectious disease hypersusceptibilities.Four of the resistance-associated pairings(malaria/hemogloginopathies,cholera/cystic fibrosis,tuberculosis/Tay-Sachs,and mycotic abortions/phenylketonuria)appear to be a result of selection pressures in geographic regions in which the specific infectious agent is endemic.The other pairings do not appear to be based on selection pressure and instead may be serendipitous.Nonetheless,research investigating these relationships may lead to treatment options for the aforementioned diseases by exploiting established mechanisms between genetically affected cells and infectious organisms.This may prove invaluable as a starting point for research in the case of diseases that currently have no reliably curative treatments,e.g.,HIV,rabies,and Ebola. | Isabelle C.Withrock Stephen J.Anderson Matthew A.Jefferson Garrett R.McCormack Gregory S.A.Mlynarczyk Aron Nakama Jennifer K.Lange Carrie A.Berg Sreemoyee Acharya Matthew L.Stock Melissa S.Lind K.C.Luna Naveen C.Kondru Sireesha Manne Bhavika B.Patel Bierlein Mde la Rosa Kuei-Pin Huang Shaunik Sharma Hilary Z.Hu Sri Harsha Kanuri Steve A.Carlson | 2015 | Genes & Diseases2015，2，3： | 0 |
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