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| 1 | Experimental study on flow characteristics of tetrahydrofuran hydrate slurry in pipelines显示文摘Tetrahydrofuran(THF) was selected as the substitute to study the flow behaviors and the mechanism of the hydrates blockage in pipelines.The slurrylike hydrates and slushlike hydrates are observed with the formation of hydrates in pipeline.There is a critical hydrate volume concentration of 50.6% for THF slurries and pipeline will be free of hydrate blockage while the hydrate volume concentration is lower than the critical volume concentration;otherwise,pipeline will be easy to be blocked.Fully turbulent flow occurs and friction factors tend to be constant when the velocity reaches 1.5 m/s.And then,constant values of friction factors that depend on the volume concentrations in the slurry were regressed to estimate the pressure drops of THF hydrate slurry at large mean velocity.Finally,a safe region,defined according to the critical hydrate volume concentration,was proposed for THF hydrate slurry,which may provide some insight for further studying the natural gas hydrate slurries and judge whether the pipeline can be run safely or not. | Wuchang Wang Shuanshi Fan Deqing Liang Yuxing Li | 2010 | Journal of Natural Gas Chemistry2010，19，3： | 26 |
| 2 | BMP-IHH-mediated interplay between mesenchymal stem cells and osteoclasts supports calvarial bone homeostasis and repair显示文摘Calvarial bones are connected by fibrous sutures. These sutures provide a niche environment that includes mesenchymal stem cells(MSCs), osteoblasts, and osteoclasts, which help maintain calvarial bone homeostasis and repair. Abnormal function of osteogenic cells or diminished MSCs within the cranial suture can lead to skull defects, such as craniosynostosis. Despite the important function of each of these cell types within the cranial suture, we have limited knowledge about the role that crosstalk between them may play in regulating calvarial bone homeostasis and injury repair. Here we show that suture MSCs give rise to osteoprogenitors that show active bone morphogenetic protein(BMP) signalling and depend on BMP-mediated Indian hedgehog(IHH) signalling to balance osteogenesis and osteoclastogenesis activity. IHH signalling and receptor activator of nuclear factor kappa-Β ligand(RANKL) may function synergistically to promote the differentiation and resorption activity of osteoclasts. Loss of Bmpr1a in MSCs leads to downregulation of hedgehog(Hh) signalling and diminished cranial sutures. Significantly, activation of Hh signalling partially restores suture morphology in Bmpr1a mutant mice, suggesting the functional importance of BMP-mediated Hh signalling in regulating suture tissue homeostasis. Furthermore, there is an increased number of CD200+ cells in Bmpr1a mutant mice, which may also contribute to the inhibited osteoclast activity in the sutures of mutant mice. Finally, suture MSCs require BMPmediated Hh signalling during the repair of calvarial bone defects after injury. Collectively, our studies reveal the molecular and cellular mechanisms governing cell–cell interactions within the cranial suture that regulate calvarial bone homeostasis and repair. | Yuxing Guo Yuan Yuan Ling Wu Thach-Vu Ho Junjun Jing Hideki Sugii Jingyuan Li Xia Han Jifan Feng Chuanbin Guo Yang Chai | 2018 | Bone Research2018，6，4： | 12 |
| 3 | Confirmation of pelitic granulite in the Altai orogen and its geological significance显示文摘The existence of pelitic granulite in the Altai orogen was confirmed for the first time by detailed petrographic research and P-T pseudosection modeling. The pelitic granulite has the assemblage of garnet + cordierite + K-feldspar + biotite + sillimanite + plagioclase + quartz with some samples containing the paragenesis of cordierite + spinel. Peak conditions of the pelitic granulite determined from the P-T pseudosection involved P = 0.5―0.6 GPa, T = 780―800℃, belonging to medium-to low-pressure type. SHRIMP U-Pb dating of zircon presented a metamorphic age of 292.8 ± 2.3 Ma. The discovery of pelitic granulite reflects an extensional environment with high heat flow in the southern margin of the Altai orogen during the Early Permian, which provides an important petrological constraint on the evolution of the Altai orogen. | WANG Wei WEI ChunJing WANG Tao LOU YuXing CHU Hang | 2009 | Chinese Science Bulletin2009，54，14： | 11 |
| 4 | A model for estimating flow assurance of hydrate slurry in pipelines显示文摘The problem of hydrate blockage of pipelines in offshore production is becoming ever-increasing severe because oil fields in ever-increasing unusual environments have been brought in production.HCFC-141b and THF were selected as the substitutes to study the flow assurance of the hydrates in pipelines.There are critical hydrate volume concentrations for these two slurries.Hydrate slurries behave like Bingham fluids and have high agglomerating tendency when the hydrate volume concentrations are larger than the critical ones.Based on rheological behaviors of these two hydrates,a non-dimensional parameter is proposed through studying the driving forces of agglomeration among hydrate particles,which shows the agglomerating probability of hydrate particles in pipeline and can be used to judge the safety of the pipeline.Moreover,a safe model to judge the safely flow hydrate slurries was presented and verified with the experimental data,which demonstrates that the model is effective to judge whether the pipeline can be run safely or not. | Wuchang Wang Shuanshi Fan Deqing Liang Yuxing Li | 2010 | Journal of Natural Gas Chemistry2010，19，4： | 10 |
| 5 | ON COMPLETE SPACE-LIKE SUBMANIFOLDS WITH PARALLEL MEAN CURVATURE VECTOR显示文摘§1.IntroductionLetNn+ppbean(n+p)-dimensionalconnectedpseudo-Riemannianmanifoldofindexp.IfNn+ppiscompleteandhasconstantsection... | SHEN YIBIING * DONG YUXING * | 1998 | Chinese Annals of Mathematics,Series B1998，19，3： | 10 |
| 6 | Analysis of the microbiota of sputum samples from patients with lower respiratory tract infections显示文摘唾沫是从患更低的呼吸的道感染的病人收集的最普通的样品,它为这些感染的细菌的鉴定是关键的。在这研究,我们与更低的呼吸的道感染从 101 个病人注册了 101 件唾沫样品。开始,在唾沫包含的细菌的 16S rDNA V3 hypervariable 区域的 pyrosequencing 为 microbiota 分析作为一条文化无关的途径被利用。为比较,用一个文化依赖者的临床的实验室测试为样品也被做的唾沫的一样的队自动化了细菌的鉴定系统。由 pyrosequencing, > 70,000 DNA 碎片在被 Ribosomal 数据库工程(RDP ) 过程分析以后被发现并且分类进 129 个细菌的类。大多数序列属于几个占优势的类,例如链球菌和葡萄球菌,显示这些类起在更低的呼吸的道感染的一个重要作用。另外,属于潜在的原因的代理人的一些序列例如霉浆菌, Haemophilus,和 Moraxella,也被发现,但是这些序列没被临床的实验室测试发现。为两个方法检测的九个类,方法的敏感被比较,结果证明 pyrosequencing 是更敏感的,除了 Klebsiella 和 Mycobacterium。显著地,这个方法揭示了更复杂的细菌的社区,它为细菌的察觉显示出一个有希望的能力。 | Yuhua Zhou Ping Lin Qingtian Li Lizhong Han Huajun Zheng Yanxia Wei Zelin Cui Yuxing Ni Xiaokui Guo | 2010 | Acta Biochimica et Biophysica Sinica2010，42，10： | 8 |
| 7 | Ce-doped LiNi_(1/3)Co_((1/3-x/3))Mn_(1/3)Ce_(x/3)O_2 cathode materials for use in lithium ion batteries显示文摘LiNi1/3Co1/3Mn1/3O2 and Ce-doped LiNi1/3Co1/3Mn1/3O2 cathode materials were synthesized by a co-precipitation method and solid phase synthesis and characterized using X-ray diffraction(XRD) and scanning electron microscopy(SEM).The results indicated that the resultant cathode materials with different Ce content all had a good layer structure and high crystallinity.Electrochemical performance testing of the cathode materials showed that the discharge capacity increased with increasing Ce content while the initial reversible capacity attenuation decreased with Ce doping.When the Ce content of the cathode materials is x=0.2,and the current charge and discharge rate is a constant 0.2 C,the discharge capacity maintained 91% of its initial capacity after cycling 50 times. | ZHANG YingJie XIA ShuBiao ZHANG YanNan DONG Peng YAN Yuxing YANG RuiMing | 2012 | Chinese Science Bulletin2012，57，32： | 8 |
| 8 | Phase Equilibria of Hornblende-Bearing Eclogite in the Western Dabie Mountain,Central China显示文摘高压(HP ) 在西方的 Dabie 山的 eclogite 围住众多的角闪石,主要 barroisite。变形的磅状况,磅路径和它的矿物质同等发育不全仍然在争论的山峰上的意见。通常, HP eclogite 包含石榴石, omphacite,角闪石和石英,与或没有 glaucophane,黝帘石和 phengite。石榴石与 X Mg 增加, X Ca 和 X Mn 从核心减少到边界,它显示进步变态。最近开发的磅假节方法建模的 HP eclogite 的阶段 equilibria 显示出下列:(1 ) 石榴石的生长带状配列记录一条进步的变形的磅路径从预先达到顶点在到一座山峰的 508 ° C -514 ° C 的 1.9 2.1 GPa 的状况在为 HP eclogite 的 528 ° C -531 ° C 的 2.3 2.5 GPa 之一;(2 ) 山峰矿物质集合是 garnet+omphacite+glaucophane+quartz ± p hengite,与 lawsonite 基因的可能的帕拉;( 3 )广泛的角闪石由于解压缩主要源于 glaucophane ,部分 omphacite 甚至一点石榴石,一些在山峰以后的阶段期间加热,主要代表大约 1.4 1.6 GPa 和 580 °C -640°C,和他们的生长的条件被 lawsonite 的脱水赞成进黝帘石或绿帘石,但是大多数在 HP eclogite 的石榴石, omphacite 或 phengite 仍然以山峰状况保存他们的作文,并且他们不显然是有角闪石的 equilibrious 。 | ZHANG Jingsen WEI Chunjing LOU Yuxing SU Xiangli | 2009 | Acta Geologica Sinica(English Edition)2009，83，1： | 7 |
| 9 | A stretchable,asymmetric,coaxial fiber-shaped supercapacitor for wearable electronics显示文摘Nano Research volume 13,pages1686–1692(2020)Cite this article 210 Accesses 1 Citations Metrics details Abstract Fiber-shaped supercapacitors(FSCs),owing to their high-power density and feasibility to be integrated into woven clothes,have drawn tremendous attentions as a key device for flexible energy storage.However,how to store more energy while withstanding various types of mechanical deformation is still a challenge for FSCs.Here,based on a magnetron sputtering method,different pseudocapacitive materials are conformally coated on self-supported carbon nanotube aligned films.This fabrication approach enables a stretchable,asymmetric,coaxial fiber-shaped supercapacitors with high performance.The asymmetric electrode configuration that consists of CNT@NiO@MnOx cathode and CNT@Fe2O3 anode successfully extends the FSC’s electrochemical window to 1.8 V in an aqueous electrolyte.As a result,a high specific capacitance of 10.4 F·cm^−3 is achieved at a current density of 30 mA·cm^−3 corresponding to a high energy density of 4.7 mWh·cm^−3.The mechanical stability of the stretchable FSC is demonstrated with a sustainable performance under strains up to 75%and a capacitance retention of 95%after 2,000 cycles under 75%strain. | Hua Yuan Guang Wang Yuxing Zhao Yang Liu Yang Wu Yuegang Zhang | 2020 | Nano Research2020，13，6： | 7 |
| 10 | Advanced smart biomaterials and constructs for hard tissue engineering and regeneration显示文摘Hard tissue repair and regeneration cost hundreds of billions of dollars annually worldwide, and the need has substantially increased as the population has aged. Hard tissues include bone and tooth structures that contain calcium phosphate minerals.Smart biomaterial-based tissue engineering and regenerative medicine methods have the exciting potential to meet this urgent need. Smart biomaterials and constructs refer to biomaterials and constructs that possess instructive/inductive or triggering/stimulating effects on cells and tissues by engineering the material's responsiveness to internal or external stimuli or have intelligently tailored properties and functions that can promote tissue repair and regeneration. The smart material-based approaches include smart scaffolds and stem cell constructs for bone tissue engineering; smart drug delivery systems to enhance bone regeneration; smart dental resins that respond to pH to protect tooth structures; smart pH-sensitive dental materials to selectively inhibit acid-producing bacteria; smart polymers to modulate biofilm species away from a pathogenic composition and shift towards a healthy composition; and smart materials to suppress biofilms and avoid drug resistance. These smart biomaterials can not only deliver and guide stem cells to improve tissue regeneration and deliver drugs and bioactive agents with spatially and temporarily controlled releases but can also modulate/suppress biofilms and combat infections in wound sites. The new generation of smart biomaterials provides exciting potential and is a promising opportunity to substantially enhance hard tissue engineering and regenerative medicine efficacy. | Ke Zhang Suping Wang Chenchen Zhou Lei Cheng Xianling Gao Xianju Xie Jirun Sun Haohao Wang Michael D.Weir Mark A.Reynolds Ning Zhang Yuxing Bai Hockin H.K.Xu | 2018 | Bone Research2018，6，4： | 6 |
| 11 | Hydrate agglomeration modeling and pipeline hydrate slurry flow behavior simulation显示文摘Dynamic modeling and numerical simulation of hydrate slurry flow behavior are of great importance to offshore hydrate management.For this purpose, a dynamic model of hydrate agglomeration was proposed in this paper.Based on population balance equation, the frame of the dynamic model was established first, which took both hydrate agglomeration and hydrate breakage into consideration.Then, the calculating methods of four key parameters involved in the dynamic model were given according to hydrate agglomeration dynamics.The four key parameters are collision frequency, agglomeration efficiency, breakage frequency and the size distribution of sub particles resulting from particle breakage.After the whole dynamic model was built, it was combined with several traditional solid–liquid flow models and then together solved by the CFD software FLUENT 14.5.Finally, using this method, the influences of flow rate and hydrate volume fraction on hydrate particle size distribution, hydrate volume concentration distribution and pipeline pressure drop were simulated and analyzed. | Guangchun Song Yuxing Li Wuchang Wang Kai Jiang Zhengzhuo Shi Shupeng Yao | 2019 | Chinese Journal of Chemical Engineering2019，27，1： | 6 |
| 12 | Intergrowth texture in Au-Ag-Te minerals from Sandaowanzi gold deposit,Heilongjiang Province:Implications for ore-forming environment显示文摘Sandaowanzi gold deposit,Heilongjiang Province,is the only single telluride type gold deposit so far documented in the world,in which 90% of gold is hosted in gold-silver telluride minerals.Optical microscope observation,scanning electron microscope,electron probe and X-ray diffraction analysis identified abundant intergrowth textures in the Au-Ag-Te minerals,typified by sylvanite-hosting hessite crystals and hessite-hosting petzite crystals.The intergrown minerals and their chemistry are consistent,and the hosted minerals are mostly worm-like or as oriented stripes,evenly distributed in the hosting minerals,with clear and smooth interfaces.These suggest an exsolution origin for the intergrowth texture.With reference to the phase-transformation temperature derived from synthesis experiments of tellurides,the exsolution texture of Au-Ag-Te minerals implies that the veined tellurides formed at 150-220℃.The early stage disseminated tellurides formed at log f(Te 2) from 13.6 to 7.8,log f(S 2) from 11.7 to 7.6,whereas the late stage veined tellurides formed at log f(Te 2) ranging from 11.2 to 9.7 and log f(S 2) from 16.8 to 12.2. | XU Hong YU YuXing WU XiangKe YANG LiJun TIAN Zhu GAO Shen WANG QiuShu | 2012 | Chinese Science Bulletin2012，57，21： | 6 |
| 13 | Comparison of Mg^(2+)- and Ca^(2+)-enhancing anaerobic granulation in an expanded granular sludge-bed reactor显示文摘The mechanisms responsible for the fast granulation of anaerobic sludge caused by Mg2+ and Ca2+ addition was examined in four lab-scale expanded granular sludge bed(EGSB) reactors. Results indicated that both Mg2+ and Ca2+ accelerated the sludge-granulation process and increased the amount of polysaccharides and proteins in the sludge. Energy dispersive x-ray spectrometry(EDX) analysis revealed that, in a mature granule, both Mg2+ and Ca2+ composed as phosphate and calcium was distributed primarily in the periphery of the granule, while magnesium distributed mainly in the interior. The addition of Mg2+ was more favorable for the nuclei formation, whereas the addition of Ca2+ was more favorable for subgranule growth and maintaining the granules' rigid structure. Results showed that the addition of Mg2+ in the nuclei formation stage and Ca2+ in the granule-growth stage accelerated granulation more than adding only one of them in the granulation process. | CAO XiaoLei SHENG YuXing CAO HongBin ZHANG Yi | 2014 | Science China Chemistry2014，57，11： | 5 |
| 14 | Quantitative reconstruction of the paleosalinity in the Daihai Lake,Inner Mongolia,China显示文摘Ostracods are small bivalved aquatic crustaceans. They secrete shells of low-Mg calcite that are often preserved in lake sediments. Recent work has shown that the uptake of trace elements (especially Mg and Sr) into the shell may be a function of the salinity and temperature of the host water. We measured Sr/Ca ratios in living ostracod valves from the species of genus Limnocythere cf. inopinata and Sr2+/Ca2+ ratios of the host water to calculate distribution coefficient of genus Limnocythere cf. inopinata in the Daihai Lake. A function for Sr2+/Ca2+ ratio and salinity was established by measuring a series of Sr2+/Ca2+ ratios and salinities of the lake water in different places of the Daihai Lake. Finally paleosalinities of the lake water were quantitatively reconstructed by the Sr/Ca ratios of ostracod shells of the same species in sediment core of the Daihai Lake. | SHEN Ji Ryo Matsumoto WANG Sumin ZHU Yuxing | 2001 | Chinese Science Bulletin2001，46，1： | 5 |
| 15 | Preparation and electrochemical performance of carbon-coated LiFePO4/LiMnPO4-positive material for a Li-ion battery显示文摘 | Qiangqiang Tan Bo Yan Yuxing Xu Yunfa Chen Jun Yang | 2017 | Particuology2017，15，1： | 5 |
| 16 | A scalable code dissemination protocol in heterogeneous wireless sensor networks显示文摘Code dissemination is currently a major research issue in wireless sensor networks (WSNs).Many studies focus on code dissemination in homogeneous WSNs,mainly using a broadcast approach to solve this problem;few studies on code dissemination in heterogeneous WSNs.Furthermore,broadcasting cannot readily be used to solve the heterogenous WSN code dissemination problem directly,which is where we have focused our attention.We transformed this problem into a minimum non-leaf nodes (MNN) Steiner tree problem.We designed a scalable multicast protocol,named Heterogeneous Sensor Networks Scalable Reprogramming Protocol (HSR) to solve the MNN problem.HSR can build different multicast trees according to different nodes or code modules to disseminate different codes to them.HSR is able to approximate the MNN tree problem to a ratio of ln|R| (R is the set of all destinations) best known lowest bound.Therefore,the communication cost is significantly decreased and the total energy required by WSNs is reduced.We further designed two scalable schemes,special routing log and hops-restricted local broadcast,which compress the multicast tree information and deliver the multicast messages without loss.We also designed a 3-stage pipeline to speed up the transmission of packets,which alleviated interference and hidden terminal issues.We evaluated our design through comprehensive simulations and prototype implementations on Mica2 motes.Experimental results demonstrate that HSR outperforms previous protocols including the most recent studies on Sprinkler and uCast. | PENG ShaoLiang LI ShanShan LIAO XiangKe PENG YuXing XIAO Nong | 2012 | Science China(Information Sciences)2012，55，6： | 5 |
| 17 | Physical effect of cloud seeding revealed by NOAA satellite imagery显示文摘From 0615 to 0749 UTC, 14 March 2000, a precipitation enhancement operation with AgI using an air- craft was conducted at the middle part of Shaanxi Province, China. 80 min after cloud seeding (0735 UTC), NOAA-14 satellite data showed a vivid zigzag cloud track on the satel- lite image. Its length is 301 km, and its average and maxi- mum width are 8.3 and 11 km. The cloud track is very simi- lar in shape with, but different in position and width from that of cloud seeding line. In order to determine that the cloud track is indeed caused by cloud seeding, a three-dimensional numerical model of transport and diffu- sion of seeding material is used to simulate the shape of seeding material concentration distribution, the turning points, width and length of seeding line. The simulated re- sults are compared with the features of cloud track at 0735 UTC. Every segment of the cloud track is consistent with the transport and diffusion of every segment of seeding line. The transport position, length, width and the variation trend of seeding line agree with those of cloud track. All suggest that the cloud track is the direct physical reflection of cloud seed- ing effect on the cloud top, which can respond to the trans- port and diffusion of seeding material. For this study case, the main effecting duration for every segment of seeding line is from 20 to 80 min, the time for each segment of seeding line diffusing to the maximum width is from about 50 to 70 min. This time is obtained from the appearing and disap- pearing time, width variation of the cloud track segments and simulated results. Also, the comparisons demonstrate that the numerical model of transport and diffusion can simulate the main characteristics of transport and diffusion of seeding material, and the simulating results are sound and trustworthy. | YUXing DAIJin LEIHengchi XUXiaohong FANPeng CHENZhengqi DUANChanghui WANGYong | 2005 | Chinese Science Bulletin2005，50，1： | 4 |
| 18 | Effects of water-aging for 6 months on the durability of a novel antimicrobial and protein-repellent dental bonding agent显示文摘Biofilms at the tooth-restoration bonded interface can produce acids and cause recurrent caries. Recurrent caries is a primary reason for restoration failures. The objectives of this study were to synthesize a novel bioactive dental bonding agent containing dimethylaminohexadecyl methacrylate(DMAHDM) and 2-methacryloyloxyethyl phosphorylcholine(MPC) to inhibit biofilm formation at the tooth-restoration margin and to investigate the effects of water-aging for 6 months on the dentin bond strength and protein-repellent and antibacterial durability. A protein-repellent agent(MPC) and antibacterial agent(DMAHDM) were added to a Scotchbond multi-purpose(SBMP) primer and adhesive. Specimens were stored in water at 37 °C for 1, 30, 90, or 180 days(d).At the end of each time period, the dentin bond strength and protein-repellent and antibacterial properties were evaluated. Protein attachment onto resin specimens was measured by the micro-bicinchoninic acid approach. A dental plaque microcosm biofilm model was used to test the biofilm response. The SBMP + MPC + DMAHDM group showed no decline in dentin bond strength after water-aging for 6 months, which was significantly higher than that of the control(P < 0.05). The SBMP + MPC + DMAHDM group had protein adhesion that was only 1/20 of that of the SBMP control(P < 0.05). Incorporation of MPC and DMAHDM into SBMP provided a synergistic effect on biofilm reduction. The antibacterial effect and resistance to protein adsorption exhibited no decrease from 1 to 180 d(P > 0.1). In conclusion, a bonding agent with MPC and DMAHDM achieved a durable dentin bond strength and long-term resistance to proteins and oral bacteria. The novel dental bonding agent is promising for applications in preventive and restorative dentistry to reduce biofilm formation at the tooth-restoration margin. | Ning Zhang Ke Zhang Michael D.Weir David J.Xu Mark A.Reynolds Yuxing Bai Hockin H.K.Xu | 2018 | International Journal of Oral Science2018，10，3： | 4 |
| 19 | AtTHIC, a gene involved in thiamine biosynthesis in Arabidopsis thaliana显示文摘抗神经炎素(维生素 B (1 )) 是为有机体的必要混合物。它包含嘧啶戒指结构和噻唑戒指结构。抗神经炎素的这二一半独立地被综合然后一起联合了。这里,我们报导 AtTHIC 的分子的描述,它在 Arabidopsis 涉及抗神经炎素生合成。AtTHIC 类似于 Escherichia 关口 i ThiC,它在初核质涉及嘧啶生合成。AtTHIC 的 Heterologous 表示能机能上地补充 E 的 thiC 大美人异种。关口 i。由在它的倡导者区域的 T-DNA 插入的 AtTHIC 表示的 Downregulation 在植物导致了抗神经炎素内容的激烈的减小,击倒的变异的 thic1 在正常文化条件下面显示出白化体(白叶子) 和致命的显型。thic1 异种能被抗神经炎素的补充救,它的缺点功能能被 AtTHIC cDNA 的表示补充。短暂表示分析表明 AtTHIC 蛋白质指向质体和叶绿体。AtTHIC 强烈在叶子,花和 siliques 被表示, AtTHIC 的抄写是外来的抗神经炎素调整的 down。在结论, AtTHIC 是在 Arabidopsis 的抗神经炎素生合成小径涉及嘧啶合成的基因,并且我们的结果为阐明提供一些新线索在植物的抗神经炎素生合成的小径。 | Danyu Kong Yuxing Zhu Huilan Wu Xudong Cheng Hui Liang Hong-Qing Ling | 2008 | Cell Research2008，18，5： | 4 |
| 20 | Effects of sulfide on sulfate reducing bacteria in response to Cu(II), Hg(II) and Cr(VI) toxicity显示文摘Sulfate reducing bacteria (SRB) is identified as the primary organisms responsible for the treatment of heavy metal wastewater. However, most heavy metals can inhibit the growth of SRB during heavy metal treatment processes. Sulfide is a metabolic product of SRB and it can precipitate or reduce heavy metals. This study focused on the effects of sulfide on SRB resistance to Cu(II), Hg(I) and Cr(VI) toxicity. First, we considered the existence style of various heavy metals with and without sulfide addition by sequential extraction experiments. Second, the particle size distribution was evaluated and the cell structure during the metabolism of a SRB culture, containing different heavy metals, was analyzed by particle size distribution and TEM analyses. Third, the evolution of sulfate under the influence of different concentrations of heavy metals with and without sulfide addition was investigated to evaluate SRB activity. The results indicated that sulfide played an important role in alleviating and even eliminating the toxicity of Cu(II), Hg(II) and Cr(VI). We also discuss the mechanism of sulfide on SRB resistance to Cu(II), Hg(I) and Cr(VI) toxicity. | SHENG YuXing CAO HongBin LI YuPing ZHANG Yi | 2011 | Chinese Science Bulletin2011，56，9： | 3 |
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