|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Leaching ion adsorption rare earth by aluminum sulfate for increasing efficiency and lowering the environmental impact显示文摘The leaching efficiency(LE) of ion adsorption rare earth(IARE) by the sulfate and chloride of ammonium,magnesium and aluminum were comparatively determined using column leaching method. It is found that at equal equivalent concentration of cation, the LE of IARE by aluminum sulfate is the highest, and the zeta potential of clay mineral particles in the tailing is near to zero, which means a lower risk of landslide and pollutant emission. Furthermore, the optimum concentration of aluminum sulfate is determined to be0.02 mol/L, which is much lower than that of ammonium sulfate and magnesium sulfate. To reduce the production cost and environmental impact, we proposed a multi-stage leaching process, which was firstly leaching with ammonium sulfate and then with aluminum sulfate, following by water washing and lime neutralizing. With the ratio of ammonium sulfate to aluminum sulfate varying from 1:0 to 0.5:0.5, the residual ammonium in tailing decreases from 11.2% to 0.6%, however, the LE of RE shows an optimum value at 0.8:0.2. By neutralizing the pH of tailing with lime water to over 6, the ion concentration in water rinsing solution can meet the requirement for water discharge. At the same time, the zeta potential of clay particles is found to be around-5 mV, means a relatively lower risk of landslide. These facts indicate that the LE of IARE can be increased and the danger caused by tailings landslides and pollutant emissions can be reduced by replacing ammonium sulfate with aluminum sulfate as leaching reagent. | Lifen Yang Cuicui Li Dashan Wang Fengyang Li Yanzhu Liu Xuezhen Zhou Mingbiao Liu Xiufeng Wang Yongxiu Li | 2019 | Journal of Rare Earths2019，37，4： | 19 |
| 2 | Mercury mass flow in iron and steel production process and its implications for mercury emission control显示文摘The iron and steel production process is one of the predominant anthropogenic sources of atmospheric mercury emissions worldwide. In this study, field tests were conducted to study mercury emission characteristics and mass flows at two iron and steel plants in China. It was found that low-sulfur flue gas from sintering machines could contribute up to41% of the total atmospheric mercury emissions, and desulfurization devices could remarkably help reduce the emissions. Coal gas burning accounted for 17%–49% of the total mercury emissions, and therefore the mercury control of coal gas burning, specifically for the power plant burning coal gas to generate electricity, was significantly important. The emissions from limestone and dolomite production and electric furnaces can contribute29.3% and 4.2% of the total mercury emissions from iron and steel production. More attention should be paid to mercury emissions from these two processes. Blast furnace dust accounted for 27%–36% of the total mercury output for the whole iron and steel production process. The recycling of blast furnace dust could greatly increase the atmospheric mercury emissions and should not be conducted. The mercury emission factors for the coke oven,sintering machine and blast furnace were 0.039–0.047 g Hg/ton steel, and for the electric furnace it was 0.021 g Hg/ton steel. The predominant emission species was oxidized mercury, accounting for 59%–73% of total mercury emissions to air. | Fengyang Wang Shuxiao Wang Lei Zhang Hai Yang Wei Gao Qingru Wu Jiming Hao | 2016 | Journal of Environmental Sciences2016，28，5： | 8 |
| 3 | Receptor-like kinases and receptor-like proteins: keys to pathogen recognition and defense signaling in plant innate immunity显示文摘植物在环境对各种各样的病原体发展了防卫的多重层。自从他们在血浆膜是在场的并且从也察觉签名分子,像受体的 kinases/proteins (RLKs/RLPs ) 在在植物和病原体之间的战争的前面线上入侵的病原体或损坏植物织物。与一些著名例外,大多数 RLKs/RLPs 是积极管理者种天生的免疫。在这评论,我们总结涉及对 pathogens.We 的各种各样的班的回答也描述什么当前对经由蛋白质蛋白质相互作用和 phosphorylation 发信号的调停 RLK 的开始的机制被知道的植物防卫的最近发现的 RLKs/RLPs。 | Xin YANG Fengyang DENG Katrina M. RAMONELL | 2012 | Frontiers in Biology2012，7，2： | 7 |
| 4 | Intracellular Signals of T Cell Costimulation显示文摘Ligation of T cell receptor (TCR) alone is insufficient to induce full activation of T lymphocytes. Additional ligand-receptor interactions (costimulation) on antigen presenting cells (APCs) and T cells are required. T cell costimulation has been shown to be essential for eliciting efficient T cell responses,involving all phases during T cell development. However,the mechanisms by which costimulation affects the function of T cells still need to be elucidated. In recent years,advances have been made in studies of costimulation as potential therapies in cancer,infectious disease as well as autoimmune disease. In this review,we discussed intracellular costimulation signals that regulate T cell proliferation,cell cycle progression,cytokine production,survival,and memory development. In general,the pathway of phosphoinositide-3 kinase (PI3K)/protein kinase B (PKB,also known as Akt)/nuclear factor κB (NF-κB) might be central to many costimulatory effects. Through these pathways,costimulation controls T-cell expansion and proliferation by maintenance of survivin and aurora B expression,and sustains long-term T-cell survival and memory development by regulating the expression of bcl-2 family members. | Fengyang Tylan Lei Rizwanul Haque | 2008 | Cellular & Molecular Immunology2008，5，4： | 7 |
| 5 | Open-circuit Fault Diagnosis of Traction Inverter Based on Compressed Sensing Theory显示文摘This study proposes a new method of fault diagnosis based on the least squares support vector machine with gradient information(G-LS-SVM)to solve the insulated-gate bipolar transistor(IGBT)open-circuit failure problem of the traction inverter in a catenary power supply system.First,a simulation model based on traction inverter topology is built,and various voltage fault signal waveforms are simulated based on the IGBT inverter open-circuit fault classification.Second,compressive sensing theory is used to sparsely represent the voltage fault signal and make it a fault signal.The new method has a high degree of sparseness and builds an overcomplete dictionary model containing the feature vectors of voltage fault signals based on a double sparse dictionary model to match the sparse signal characteristics.Finally,the space vector transform is used to represent the three-phase voltage scalar in the traction inverter as a composite quantity to reduce the redundancy of the fault signals and data-processing capabilities.A G-LS-SVM fault diagnosis model is then built to diagnose and identify the voltage fault signal feature vector in an overcomplete dictionary.The simulation results show that the accuracy of this method for various types of IGBT tube fault diagnosis is over 98.92%.Moreover,the G-LS-SVM model is robust and not affected by Gaussian white noise. | Yongqi Cheng Weiguang Dong Fengyang Gao Guoqing Xin | 2020 | Chinese Journal of Electrical Engineering2020，6，1： | 6 |
| 6 | Molecular Characterization of Avian-like H1N1 Swine Influenza A Viruses Isolated in Eastern China, 2011显示文摘Currently, three predominant subtypes of influenza virus are prevalent in pig populations worldwide: H1N1, H3N2, and H1N2. European avian-like H1N1 viruses, which were initially detected in European pig populations in 1979, have been circulating in pigs in eastern China since 2007. In this study, six influenza A viruses were isolated from 60 swine lung samples collected from January to April 2011 in eastern China. Based on whole genome sequencing, molecular characteristics of two isolates were determined. Phylogenetic analysis showed the eight genes of the two isolates were closely related to those of the avian-like H1N1 viruses circulating in pig populations, especially similar to those found in China. Four potential glycosylation sites were observed at positions 13, 26, 198, 277 in the HA1 proteins of the two isolates. Due to the presence of a stop codon at codon 12, the isolates contained truncated PB1-F2 proteins. In this study, the isolates contained 591Q, 627E and 701N in the polymerase subunit PB2, which had been shown to be determinants of virulence and host adaptation. The isolates also had a D rather than E at position 92 of the NS1, a marker of mammalian adaptation. Both isolates contained the GPKV motif at the PDZ ligand domain of the 3' end of the NS1, a characteristic marker of the European avian-like swine viruses since about 1999, which is distinct from those of avian, human and classical swine viruses. The M2 proteins of the isolates have the mutation (S31N), a characteristic marker of the European avian-like swine viruses since about 1987, which may confer resistance to amantadine and rimantadine antivirals. Our findings further emphasize the importance of surveillance on the genetic diversity of influenza A viruses in pigs, and raise more concerns about the occurrence of cross-species transmission events. | Xian Qi Yuning Pan Yuanfang Qin Rongqiang Zu Fengyang Tang Minghao Zhou Hua Wang Yongchun Song | 2012 | Virologica Sinica2012，27，5： | 6 |
| 7 | Mercury enrichment and its effects on atmospheric emissions in cement plants of China显示文摘 | Fengyang Wang Shuxiao Wang Lei Zhang Hai Yang Qingru Wu Jiming Hao | 2014 | Atmospheric Environment2014，，： | 5 |
| 8 | 120 mm Single-crystalline perovskite and wafers: towards viable applications显示文摘As the large single-crystalline silicon wafers have revolutionized many industries including electronics and solar cells, it is envisioned that the availability of large single-crystalline perovskite crystals and wafers will revolutionize its broad applications in photovoltaics, optoelectronics, lasers, photodetectors, light emitting diodes(LEDs), etc. Here we report a method to grow large single-crystalline perovskites including single-halide crystals: CH3NH3PbX3(X=I, Br, Cl), and dual-halide ones:CH3NH3Pb(ClxBr1.x)3 and CH3NH3Pb(BrxI1.x)3, with the largest crystal being 120 mm in length. Meanwhile, we have advanced a process to slice the large perovskite crystals into thin wafers. It is found that the wafers exhibit remarkable features:(1)its trap-state density is a million times smaller than that in the microcrystalline perovskite thin films(MPTF);(2) its carrier mobility is 410 times higher than its most popular organic counterpart P3HT;(3) its optical absorption is expanded to as high as910 nm comparing to 797 nm for the MPTF;(4) while MPTF decomposes at 150 °C, the wafer is stable at high temperature up to270 °C;(5) when exposed to high humidity(75% RH), MPTF decomposes in 5 h while the wafer shows no change for overnight;(6) its photocurrent response is 250 times higher than its MPTF counterpart. A few electronic devices have been fabricated using the crystalline wafers. Among them, the Hall test gives low carrier concentration with high mobility. The trap-state density is measured much lower than common semiconductors. Moreover, the large SC-wafer is found particularly useful for mass production of integrated circuits. By adjusting the halide composition, both the optical absorption and the light emission can be fine-tuned across the entire visible spectrum from 400 nm to 800 nm. It is envisioned that a range of visible lasers and LEDs may be developed using the dual-halide perovskites. With fewer trap states, high mobility, broader absorption, and humidity resistance, it is expected that solar cells with high stable efficiency maybe attainable using the crystalline wafers. | Yucheng Liu Xiaodong Ren Jing Zhang Zhou Yang Dong Yang Fengyang Yu Jiankun Sun Changming Zhao Zhun Yao Bo Wang Qingbo Wei Fengwei Xiao Haibo Fan Hao Deng Liangping Deng Shengzhong (Frank) Liu | 2017 | Science China Chemistry2017，60，10： | 5 |
| 9 | Distribution characteristics of heavy metals in surface sediments and core sediments of the Shenzhen Bay in Guangdong Province,China显示文摘The concentration of zinc,chromium,cadmium,nickel,lead and copper was measured on both surface sediments and core sediments in the Shenzhen Bay.The average contents of all metals have exceeded the background values in the coastal zone of Guangdong Province.Cadmium is a heavy pollution matter which indicates a strong pollution level according to the ecological risk coefficient method.The ecological risk index of the whole area is 299 which belongs to middle and strong level.The area with strong pollution level is the near shore area closing to the inside of Shenzhen Bay,Shakou area is in the middle level while the weak pollution level occurs in Shenzhenhe Estuary according to ecological risk index.The four sediment cores can be divided into two parts based on lead-210 dating,sediments size analysis and economic development period in surrounding areas since 1950 with strong human intervention.The sediment size,deposition rate and human activities have positive relationship with the contents of heavy metals which directly impact the pollution level of heavy metals in sediments in Shenzhen Bay. | ZUO Ping WANG Yaping MIN Fengyang CHENG Jun | 2009 | Acta Oceanologica Sinica2009，28，6： | 4 |
| 10 | Asymptotics for the Tail Probability of Random Sums with a Heavy-Tailed Random Number and Extended Negatively Dependent Summands显示文摘Let {X,X_k:k≥1} be a sequence of extended negatively dependent random variables with a common distribution F satisfying EX > 0.Let r be a nonnegative integer-valued random variable,independent of {X,X_k:k≥1}.In this paper,the authors obtain the necessary and sufficient conditions for the random sums S_r =(?)X_n to have a consistently varying tail when the random number t has a heavier tail than the summands,i.e.,(P(X>x))/(P(r >x))→0as | Fengyang CHENG Na LI | 2014 | Chinese Annals of Mathematics,Series B2014，35，1： | 3 |
| 11 | Phenotypic and genetic parameter estimation of juvenile growth and bottom color traits in half-smooth tongue sole,Cynoglossus semilaevis显示文摘Half-smooth tongue sole(Cynoglossus semilaevis) is a commercially important fish species. There were no reports about accurate genetic parameters of growth traits in C. semilaevis, despite efforts aimed at the culture of this species. Therefore, the main goal of this study was to estimate the parameters for the early growth traits(total length, body depth and body weight) of C. semilaevis based on the data obtained from 80 families. The trait of fish with pure white bottom or not(named as the trait of bottom color) was also analyzed. All the heritabilities estimated for the traits were medium, which varied from 0.210 to 0.362. Genetic correlations among growth traits were highly positive, varying from 0.913 to 0.959, indicating that selection of one of the three traits would result in correlated increase in the others. Also, genetic correlations between bottom color and growth traits were positive and varying from 0.241 to 0.353, suggesting that selection for the bottom color can be utilized to enhance the selection of growth traits. In addition, fish from the top performing 16 full-sib families were selected as broodstock, based on the above analysis and the comparison of family breeding value. This research provides an important basic material to implement selective breeding in C. semilaevis. | LIU Feng | 2016 | Acta Oceanologica Sinica2016，35，10： | 2 |
| 12 | Occurrence and a screening‐level risk assessment of human pharmaceuticals in the Pearl River system, South China显示文摘 | Jian‐LiangZhao Guang‐GuoYing You‐ShengLiu FengChen Ji‐FengYang LiWang Xiao‐BingYang Jenny L.Stauber Michael St. J.Warne | 2010 | Environmental Toxicology and Chemistry2010，，6： | 2 |
| 13 | Defective arginine metabolism impairs mitochondrial homeostasis in Caenorhabditis elegans显示文摘Arginine catabolism involves enzyme-dependent reactions in both mitochondria and the cytosol,defects in which may lead to hyperargininemia,a devastating developmental disorder.It is largely unknown if defective arginine catabolism has any effects on mitochondria.Here we report that normal arginine catabolism is essential for mitochondrial homeostasis in Caenorhabditis elegans.Mutations of the arginase gene argn-1 lead to abnormal mitochondrial enlargement and reduced adenosine triphosphate(ATP)production in C elegans hypodermal cells.ARGN-1 localizes to mitochondria and its loss causes arginine accumulation,which disrupts mitochondrial dynamics.Heterologous expression of human ARGl or ARG2 rescued the mitochondrial defects of argn-1 mutants.Importantly,genetic inactivation of the mitochondrial basic amino acid transporter SLC-25A29 or the mitochondrial glutamate transporter SLC-25A18.1 fully suppressed the mitochondrial defects caused by argn-1 mutations.These findings suggest that mitochondrial damage probably contributes to the pathogenesis of hyperargininemia and provide clues for developing therapeutic treatments for hyperargininemia. | Ruofeng Tang Xin Wang Junxiang Zhou Fengxia Zhang Shan Zhao Qiwen Gan Liyuan Zhao Fengyang Wang Qian Zhang Jie Zhang Guodong Wang Chonglin Yang | 2020 | Journal of Genetics and Genomics2020，47，3： | 2 |
| 14 | Fault Diagnosis of Photovoltaic Array Based on Deep Belief Network Optimized by Genetic Algorithm显示文摘When using deep belief networks(DBN)to establish a fault diagnosis model,the objective function easily falls into a local optimum during the learning and training process due to random initialization of the DBN network bias and weights,thereby affecting the computational efficiency.To address the problem,a fault diagnosis method based on a deep belief network optimized by genetic algorithm(GA-DBN)is proposed.The method uses the restricted Boltzmann machine reconstruction error to structure the fitness function,and uses the genetic algorithm to optimize the network bias and weight,thus improving the network accuracy and convergence speed.In the experiment,the performance of the model is analyzed from the aspects of reconstruction error,classification accuracy,and time-consuming size.The results are compared with those of back propagation optimized by the genetic algorithm,support vector machines,and DBN.It shows that the proposed method improves the generalization ability of traditional DBN,and has higher recognition accuracy of photovoltaic array faults. | Caixia Tao Xu Wang Fengyang Gao Min Wang | 2020 | Chinese Journal of Electrical Engineering2020，6，3： | 2 |
| 15 | A method of predicting visual detectability of low-velocity impact damage in composite structures based on logistic regression model显示文摘This paper proposed a new method for quantitative assessment of visual detectability of damage based on logistic regression,using the Probability of Detection(POD)as a criterion.Experiments were performed to establish the massive hit/miss data of visual inspection.Authoritative investigations verified the reliability of the data.The prediction function concluded comprises more than one flaw size parameters,including the depth and diameter of the dents.The results show that the depth and diameter of the dents are pivotal for the evaluation of detectability;the type of detection,the detection distance,and the qualifications of personnel are critical external factors to be considered.This function,with an accuracy rate of nearly 85%,is capable of predicting the visual detection probability of impact damage under various detection environments,which will provide a reference for the damage tolerance design of composite materials and field maintenance in the NonDestructive Testing(NDT)field. | Fengyang JIANG Zhidong GUAN Zengshan LI Xiaodong WANG | 2021 | Chinese Journal of Aeronautics2021，34，1： | 2 |
| 16 | 高温处理对T300级炭纤维结构及性能的影响[J]显示文摘 | FengYang'yang(冯阳阳) CuiHong(崔红) LiRuizhen(李瑞珍) | | 同体火箭技术0，，： | 1 |
| 17 | Fabrication of porous ceramics with unidirectionally aligned continuously pores显示文摘 | Zhang Guojun Jian Fengyang Tatsuki Ohji | 2001 | J Am Ceram Soc2001，84，： | 1 |
| 18 | Outcome of hepatitis C virus infection in Chinese paid plasma donors: A 12–19‐year cohort study显示文摘 | Hui‐YingRao De‐GuiSun Rui‐FengYang FengLiu JianWang BoFeng NanWu Ji‐LianFang Guang‐JunSong HuiMa FangGuo Jiang‐HuaWang Xiao‐BoLi QianJin HongQin HuiZhuang LaiWei | 2012 | Journal of Gastroenterology and Hepatology2012，，3： | 1 |
| 19 | Cyclophosphamide abrogates the expansion of CD4^(+)Foxp3^(+) regulatory T cells and enhances the efficacy of bleomycin in the treatment of mouse B16-F10 melanomas显示文摘Objective:Promotion of the proliferative expansion of CD4^(+)Foxp3^(+)regulatory T cells(Tregs)is one of the side effects that limits the use of bleomycin(BLM)in the treatment of tumors.In this study,we examined the hypothesis that cyclophosphamide(CY),a chemotherapeutic agent with the capacity to eliminate tumor infiltrating Tregs,abrogated BLM-induced expansion of Tregs and consequently resulted in a better anti-tumor effect.Methods:The in vitro effects of BLM,with or without mafosfamide(MAF,the active metabolite of CY),on both TGF-β-induced differentiation of Tregs(iTregs),and TNF-induced expansion of naturally occurring Tregs(nTregs)were assessed.The in vivo effect of low doses of BLM and CY on tumor-infiltrating Tregs,as well as on the growth of mouse B16-F10 melanomas,was also studied.Results:In vitro treatment with BLM promoted the differentiation of iTregs,as well as TNF-induced expansion of nTregs.These effects of BLM were completely abrogated by MAF.Furthermore,in the mouse B16-F10 melanoma model,treatment with low doses of BLM increased the number of tumor-infiltrating Tregs,and this effect of BLM was also abrogated by CY.Importantly,combination therapy with low doses of BLM and CY showed synergistic anti-tumor effects.Conclusions:CY abrogated the effect of BLM on the expansion of Tregs.The combination of these 2 chemotherapeutic agents may represent a safer and more effective therapy in the treatment of cancer patients,and thus merits future clinical evaluation. | Ping Li Fengyang Chen Jingbin Zheng Yang Yang Yuan Li Yifei Wang Xin Chen | 2021 | Cancer Biology & Medicine2021，18，4： | 1 |
| 20 | A new DEA‐based method for fully ranking all decision‐making units显示文摘 | JuanDu LiangLiang FengYang Gong‐BingBi Xiao‐BoYu | 2010 | Expert Systems2010，，5： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员