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| 1 | Optimization of parameters on photocatalytic degradation of chloramphenicol using TiO_2 as photocatalyist by response surface methodology显示文摘The experimental design methodology was applied for modeling and optimizing the operation parameters on photocatalytic degradation of chloramphenicol (CAP) using TiO 2 as photocatalyst in a photoreactor. Three experimental parameters (including pH, TiO 2 concentration and CAP initial concentration) were adopted to obtain the preliminary information. The multivariate experimental design was employed to establish a quadratic model as a functional relationship between the degradation rate of CAP and three experimental parameters. The interaction effects and optimal parameters were obtained by using Design Expert software. The optimal values of the operation parameters under the related constraint conditions were found at pH 6.4, TiO 2 concentration of 0.94 g/L and CAP initial concentration of 19.97 mg/L, respectively. The degradation rate of CAP approached 85.97% under optimal conditions. The regression analysis with R 2 value of 0.9519 had a good agreement between the experimental results and the predictive values. In addition, pH and TiO 2 concentration had a significant influence on the degradation rate of CAP. | Junwei Zhang Dafang Fu Yunda Xu Cuiyun Liu | 2010 | Journal of Environmental Sciences2010，22，8： | 13 |
| 2 | MiR-33a suppresses breast cancer cell proliferation and metastasis by targeting ADAM9 and ROS1显示文摘MicroRNAs (miRNAs ) 是由指向多重 mRNAs 的定序明确地在基因表示的 post-transcriptional 规定有一个枢轴的角色的小 noncoding RNA。尽管 miR-33a 最近被报导在类脂化合物动态平衡,动脉粥样硬化,和肝的纤维变性起一个重要作用,在肿瘤前进和转移的 miR-33a 的功能大部分是未知的。这里,我们发现在乳癌纸巾的 downregulated miR-33a 与淋巴节点转移相关。MiR-33a 表示比 noncancerous 胸在高度变形的乳癌房间线是显著地更低的上皮的房间和非变形的乳癌房间。而且,在变形乳癌细胞的 miR-33a 的 overexpression 显著地减少在 vitro 并且显著地的细胞增长和侵略在 vivo 禁止肿瘤生长和肺转移,而它的在非变形的乳癌细胞击倒显著地在 vitro 提高细胞增长和侵略并且在 vivo 支持肿瘤生长和肺转移。联合生物信息学预言和生物化学的分析,我们证明 ADAM9 和 ROS1 是 miR-33a 的直接下游的目标。这些调查结果作为乳癌房间增长和转移的一个否定管理者识别了 miR-33a。 | Chuankai Zhang Yunda Zhang Weiji Ding Yancheng Lin Zhengjie Huang Qi Luo | 2015 | Protein & Cell2015，6，12： | 10 |
| 3 | Development of microstructural inhomogeneity in multi-pass flow forming of TA15 alloy cylindrical parts显示文摘Revealing the development of microstructural inhomogeneity in the multi-pass flow forming of titanium alloy components is of great significance to the microstructure control and property tailoring.To this end,the microstructural inhomogeneity of TA15 alloy spun cylindrical parts was analyzed based on the deformation history.The results indicate that the material underwent significant compressive strain in the normal direction(ND),tension strain in the rolling and circumferential directions(RD and CD),while tension strain in the CD is slightly small due to the limited material flow in this direction.These strain characteristics make the microstructure,especially the primary a(ap),present different morphologies in the different planes of the part.Meanwhile,the combined effects of inhomogeneous deformation and temperature distribution in the ND also cause the inhomogeneity of microstructure morphology and parameters in this direction.Quantitative analyses show that with the forming pass increasing,the aspect ratio of apincreases most in the normal-rolling plane,then in the normal-circumferential plane and least in the circumferential-rolling plane,whereas apcontent decreases in an opposite trend.Along the ND,the aspect ratio and content of apis relatively high in the outer and inner surface areas but lowest in the central area,and these inhomogeneous characteristics can be gradually diminished with the forming pass increasing.Furthermore,the variation of hardness inhomogeneity factor indicates that a four-pass forming with the total reduction ratio of 63%could obtain a homogenous microstructure along the ND of the TA15 alloy spun cylindrical part. | Xianxian WANG Pengfei GAO Mei ZHAN Ke YANG Yunda DONG Yukun LI | 2020 | Chinese Journal of Aeronautics2020，33，7： | 3 |
| 4 | Representation of liquid-liquid equilibrium of mixed-solvent electrolyte systems using the extended electrolyte NRTL model显示文摘 | Liu Yunda Suphat Watasasiri | 1996 | Fluid Phase Equilibria1996，116，： | 1 |
| 5 | Design of Variable Two-Dimensional FIR Digital Fihers by McClellan Transfor mation显示文摘 | Shyu Jongly Pei Soochang Huang Yunda | 2009 | IEEE Trans on Circuit and System2009，56，3： | 1 |
| 6 | Background model initialization in moving object detection with shadow elimination 显示文摘 | Yunda Sun Ming Li Wei Wu | 2004 | Signal Processing2004，，2： | 1 |
| 7 | Testosterone excretion in chronic prostatis显示文摘 | YUNDA IF IMSHINESKAYA LP | 1977 | Andrologia1977，9，1： | 1 |
| 8 | NMR study of proton exchange, hydrogen bonding, and dissociation of water in hydrazine solutions显示文摘 | Lagodzinskaya B V Yunda N G Manelis G B | 1980 | Bull Acad Sci USSR Div Chem1980，，4： | 1 |
| 9 | High-resolution NMR study of the solvation of the proton in water and hydrazine显示文摘 | Lagodzinskaya B V Yunda N G Manelis G B | 1980 | Bull Acad Sci USSR Div Chem1980，，5： | 1 |
| 10 | Statistical positivity criteria for the analysis of ELISPOT assay data in HIV-1 vaccine trials显示文摘 | Zoe Moodie Yunda Huang Lin Gu | 2006 | J Immunol Methods2006，315，12： | 1 |
| 11 | Impact of Herpes Simplex Virus Type 2 on HIV-1 Acquisition and Progression in an HIV Vaccine Trial (the Step Study)显示文摘 | Ruanne V Barnabas Judith N Wasserheit Yunda Huang Holly Janes Rhoda Morrow Jonathan Fuchs Karen E Mark Martin Casapia Devan V Mehrotra Susan P Buchbinder Lawrence Corey | 2011 | JAIDS Journal of Acquired Immune Deficiency Syndromes2011，，： | 1 |
| 12 | SOC esti- mation of EV battery based on improved Thevenin model 显示文摘 | Mao Chunsheng Zhong Shaohua Hu Yunda | 2005 | Technology of Power Supply2005，382，18： | 1 |
| 13 | Experimental research on terahertz Gabor inline digital holography of concealedobjects显示文摘 | LI Qi XUE Kai LI Yunda | 2012 | Applied Optics2012，51，29： | 1 |
| 14 | Experimental research on terahertz Gabor inline digital holography of concealed objects 显示文摘 | Li Qi Xue Kai Li Yunda | 2012 | Applied Optics2012，51，29： | 1 |
| 15 | Extraction of Herba Lycopi Polysaccharide and Study of Its Antioxidant Activity by Cellulase Method显示文摘[Objectives] To optimize the extraction process of Herba Lycopi polysaccharide by cellulase,and study its antioxidant activity.[Methods]The single factor test and orthogonal test were conducted to study the effect of p H,enzyme dosage,enzymolysis temperature and extraction time on the extraction of Herba Lycopi polysaccharide. And the test was done about its scavenging effect on DPPH radicals and superoxide anions,and the antioxidant activity was evaluated. [Results] The optimum extraction process by cellulase method was as follows: p H value of 7; enzyme dosage of 4 ml; enzymolysis temperature of 40 ℃; extraction time of 2. 5 h. The average extraction rate of Herba Lycopi polysaccharide was 10. 70%,and RSD was 0. 17%. The antioxidant activity test showed that Herba Lycopi polysaccharide had a significant scavenging effect on radicals. [Conclusions] Herba Lycopi polysaccharides had strong antioxidant activity,and could provide a scientific basis for the development and utilization of Herba Lycopi medicinal resources. | Tao HUANG Zhaoping ZHANG Zudi YAN Yunda LI Yuanhui LI Ying HUANG Tingzhang HUANG Qiaorong YU Mengyao LIN Wende LU Suoyi HUANG | 2017 | Medicinal Plant2017，8，3： | 1 |
| 16 | Representation of Liquid-Liquid Equilibrium of mixed-solvent electrolyte systes using the extended eletrolyte NRTL model显示文摘 | Yunda Liu Suphat Watanasiri | 1996 | Fluid Phase Equilibria1996，，116： | 1 |
| 17 | Study on attrition of spherical-shaped Mo/HZSM-5 catalyst for methane dehydro-aromatization in a gas–solid fluidized bed显示文摘As a potential methane efficient conversion process,non-oxidative aromatization of methane in fluidized bed requires a catalyst with good attrition resistance,especially in the states of high temperature,longtime rapid movement and chemical reaction.Existing evaluation methods for attrition resistance,such as ASTM D5757 and Jet Cup test,are targeted for fresh catalysts at ambient temperature,which cannot well reflect the real process.In this study,spherical-shaped Mo/HZSM-5 catalyst prepared by dipping and spray drying was placed in a self-made apparatus for attrition testing,in which the catalyst attrition under different system temperatures,running time and process factors was investigated with percent mass loss(PML),particle size-mass distribution(PSMD)and scanning electron microscope(SEM).Carbon deposition on the catalyst before and after activation,aromatization and regeneration was analyzed by thermogravimetry(TG),and the attrited catalysts were evaluated for methane dehydro-aromatization(MDA).The results show that the surface abrasion and body breakage of catalyst particles occur continuously,with the increase of system temperature and running time,and make the PML rise gradually.The process factors of activation,aromatization and regeneration can cause the catalyst attrition and carbon deposits,which broaden the PSMD in varying degrees,and the carbon-substances on catalysts greatly improve their attrition resistance at high temperature.Catalyst attrition has a certain influence on its catalytic performance,and the main reasons point to particle breakage and fine powder escape. | Xinzhuang Zhang Yunda Han Dapeng Li Zhanguo Zhang Xiaoxun Ma | 2021 | Chinese Journal of Chemical Engineering2021，34，10： | 1 |
| 18 | Construction and Development of China’s Earthquake Information Release System显示文摘Focused on the current situation,monitoring system,technical management regulation,process,system composition,and information publication of the earthquake information release,we summarized the construction and development of China’s earthquake information release system and expected its future.In general,China’s earthquake information release systems is able to publish auto-results with MS≥3.0 from 1 to 3 minutes,M_S≥6.0 in global from 2 to 30 minutes,and formal results with MS≥3.0 in China from 8 to 30 minutes,MS≥6.0 in global from 20 to 60 minutes.These earthquake information is released by various channels such as short message,website,microblog,mobile application,etc. | JI Yunda YANG Chen HUANG Zhibin ZHAI Luyuan | 2019 | Earthquake Research in China2019，33，4： | 1 |
| 19 | Ter'Mlertz computed tomography using a continuous-wave gas laser显示文摘 | Qi Li Yunda Li Shenghui Ding | 2012 | Journal of Infrared Millimeter and Terahertz Waves2012，33，： | 1 |
| 20 | A primer-initiated strand displacement amplification strategy for sensitive detection of 5-Hydroxymethylcytosine in genomic DNA显示文摘5-Hydroxymethylcytosine(5 hmC),an intermediate product of DNA demethylation,is important for the regulation of gene expression during development and even tumorigenesis.The challenges associated with determination of 5 hm C level include its extremely low abundance and high structural similarity with other cytosine derivatives,which resulted in sophisticated treatment with large amount of sample input.Herein,we developed a primer-initiated strand displacement amplification(PISDA)strategy to quantify the global 5 hm C in genomic DNA from mammalian tissues with high sensitivity/selectivity,low input and simple operation.This sensitive fluorescence method is based on 5 hmC-specific glucosylation,primer ligation and DNA amplification.After the primer was labeled on 5 hm C site,DNA polymerase and nicking enzyme will repeatedly act on each primer,causing a significant increase of fluorescence signal to magnify the minor difference of 5 hm C content from other cytosine derivatives.This method enables highly sensitive analysis of 5 hm C with a detection limit of 0.003%in DNA(13.6 fmol,S/N=3)from sample input of only 150 ng,which takes less than 15 min for determination.Further determination of 5 hmC in different tissues not only confirms the widespread presence of 5 hmC but also indicates its significant variation in different tissues and ages.Importantly,this PISDA strategy exhibits distinct advantages of bisulfite-free treatment,mild conditions and simple operation without the involvement of either expensive equipment or large amount of DNA sample.This method can be easily performed in almost all research and medical laboratories,and would provide a promising prospect to detect global 5 hmC in mammalian tissues. | Yunda Li Yanfei Zhang Zhenning Yu Yuzhi Xu Si-Yang Liu Zong Dai Xiaoyong Zou | 2022 | Chinese Chemical Letters2022，33，8： | 0 |
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