维普中文期刊产品整合服务
25篇 您的检索式:作者名="Yonghong Ren"
    题名 作者 年代 出处 被引量
1Precise measurement of stable (δ^(88/86)Sr) and radiogenic (^(87)Sr/^(86)Sr) strontium isotope ratios in geological standard reference materials using MC-ICP-MS显示文摘A new method for high-precision measurements of stable (δ88/86Sr) and radiogenic (87Sr/86Sr) Sr isotope ratios was developed on the MC-ICP-MS using a standard-sample-standard bracketing protocol. By carefully monitoring and controlling the accumulation of the on-peak backgrounds (i.e. the carryover memory) on the instrument, our method can provide an external precision of around 0.010‰ to 0.014‰ for 88/86 Sr measurements. Such precision is comparable to that achieved by double-spike TIMS method (DS-TIMS), and 2-3 times better than those of the previously reported results by MC-ICP-MS without spiking. The results of the standard seawater IAPSO are also identical to those by DS-TIMS. However, our method is more advantageous, efficient and convenient to use for routine Sr isotopic analysis than the DS-TIMS method as there is no need to prepare and calibrate the 84Sr-87 Sr double spike. Using this method, we measured the δ88/86Sr values in a series of international geological rock standards, which show large variability, with the lowest value (0.20‰) registered in JG-2, a terrestrial granite, and the highest value (0.539‰) in UB-N, a serpentinite. This may provide an additional means for isotopic characterization of geological processes, adding a new dimension over the traditional use of radiogenic Sr isotopic ratio 87Sr/86Sr.MA JinLong WEI GangJian LIU Ying REN ZhongYuan XU YiGang YANG YongHong 2013Chinese Science Bulletin2013,58,25:9
2Improvement of the matrix and the interface quality of a Cu/Al composite by the MARB process显示文摘The matrix accumulative roll bonding technology (MARB) can improve the matrix performance of metal com- posite and strengthen the bonding quality of the interface. In this research, for the first time, the technology of MARB was proposed. A sound Cu/Al bonding composite was obtained using the MARB process and the bonding characteristic of the interface was studied using scanning electricity microscope (SEM) and energy-dispersive spectroscopy (EDS). The result indicated that accumulation cycles and diffusion annealing temperature were the most important factors for fabricating a Cu/Al composite material. The substrate aluminum was strengthened by MARB, and a high quality Cu/Al composite with sound interface was obtained as well.XU Rongchang TANG Di REN Xueping WANG Xiaohong WEN Yonghong 2007Rare Metals2007,26,3:9
3Identification of Differentially-expressed Genes in Intestinal Gastric Cancer by Microarray Analysis显示文摘Gastric cancer(GC) is one of the most frequent malignant tumors. In order to systematically characterize the cellular and molecular mechanisms of intestinal GC development,in this study, we used 22 K oligonucleotide microarrays and bioinformatics analysis to evaluate the gene expression profiles of GC in 45 tissue samples, including 20 intestinal GC tissue samples,20 normal appearing tissues(NATs) adjacent to tumors and 5 noncancerous gastric mucosa tissue samples. These profiles allowed us to explore the transcriptional characteristics of GC and determine the change patterns in gene expression that may be of clinical significance. 1519 and 1255 differentially-expressed genes(DEGs) were identified in intestinal GC tissues and NATs, respectively,as determined by Bayesian analysis(P < 0.001). These genes were associated with diverse functions such as mucosa secretion, metabolism, proliferation, signaling and development, which occur at different stages of GC development.Shizhu Zang Ruifang Guo Rui Xing Liang Zhang Wenmei Li Min Zhao Jingyuan Fang Fulian Hu Bin Kang Yonghong Ren Yonglong Zhuang Siqi Liu Rong Wang Xianghong Li Yingyan Yu Jing Cheng Youyong Lu 2014Genomics, Proteomics & Bioinformatics2014,12,6:4
4Study on the Algorithm of Vibration Source Identification Based on the Optical Fiber Vibration Pre-Warning System显示文摘为系统 OFVWS 指识别颤动的光纤维颤动警告前的关键技术之一从检测颤动信号精确地采购原料。因为许多种颤动来源和复杂地质的结构,识别颤动来源的工具提出需要被克服以便完成可接受的性能的一些有趣的挑战。这份报纸主要在时间领域和 OFVWS 检测的颤动信号的频率领域分析上进行并且包括一个精力信息熵模型建立属性特征模型识别雨点颤动来源和一个基本频率模型区分构造机器和经过的火车或汽车。测试结果证明特征模型的设计和选择是合理的,并且鉴定的率好。Hongquan QU Xuecong REN Guoxiang LI Yonghong LI Changnian ZHANG 2015Photonic Sensors2015,5,2:3
5Preparation and Characterization of Tung Oil Toughened Modified Phenolic Foams with Enhanced Mechanical Properties and Smoke Suppression显示文摘In this study,we prepared a series of tung oil phenolic foams(TPF)by a one-pot method.The FT-IR and 1H NMR spectra confirm the successful Friedel-Crafts grafting of phenol to the long-chain alkyl group in tung oil.Modified TPFs exhibit enhanced mechanical properties,including compressive and flexural strengths of up to 0.278±0.036 MPa and 0.450±0.017 MPa,respectively,which represent increases of 68.75%and 86.72%over those of pure phenolic foam(PF).SEM spectra reveal the TPF microstructure to have uniform hexagonal cell morphology,narrower cell size distribution,and smaller mean cell size,suggesting enhanced mechanical properties.The TPF total smoke release decreased by 74.23%,indicating that the long alkyl chain significantly improves smoke suppression of the combusting foam.However,due to the flammability of the alkyl chains,the TPF limiting oxygen index decreases with increasing tung oil content.Moreover,TPF exhibits reduced thermal stability and high-temperature charring rate,elevated peak and mean heat release rates,and higher total heat release compared with pure PF.Therefore,future research will focus on the use of tung oil modified flame retardant to provide more robust phenolic foams.Fei Song Puyou Jia Caiying Bo Xiaoli Ren Lihong Hu Yonghong Zhou 2020Journal of Renewable Materials2020,8,5:2
6Contents Variation Analysis ofγ-Amino Butyric Acid in Semen sojae praeparatum Fermentation Using Online Pre-Column Derivatization-HPLC显示文摘This paper reported the contents variation analysis ofγ-amino butyric acid(GABA)in Semen sojae praeparatum(SSP)which is a famous traditional Chinese medicine.High performance liquid chromatography(HPLC)was used and GABA was derivatized by online pre-column derivatization with o-phthalaldehyde(OPA).To validate this method,the precision,stability,repeatability and recovery were discussed.In the concentration range from 0.0125 to 0.400 mg/m L,the calibration curve for GABA was linear and the regression equation was obtained with correlation coefficient(R2)of 0.9999.Relatively high levels of GABA exist in SSP and the content changes of GABA at different time points during the fermenting process were detected.At the'yellow cladding'stage,GABA level was very low or even undetectable;the'secondary fermentation'stage witnessed a rapid increase of GABA content to 1.39-5.52 mg/g,which remained stable after 18 days of'secondary fermentation'.This study demonstrated that GABA was generated at the'secondary fermentation'stage,revealing the significance and rationality of the'secondary fermentation'stage in the fermenting process of SSP.On the other hand,it suggested the downside of taking soy isoflavones as the only measurement in existing quality assessment and optimization approach for the fermenting process of SSP.WENG Meizhi HE Jing REN Jiaxiu LIANG Yonghong CHEN Qingfeng SU Mingsheng WANG Liyuan XIE Xiaomei 2021Wuhan University Journal of Natural Sciences2021,26,1:2
7Postharvest BTH treatment induced disease resistance and enhanced reactive oxygen species metabolism in muskmelon (Cucumis melo L.) fruit显示文摘Yalin Ren Yunfei Wang Yang Bi Yonghong Ge Yi Wang Cunfei Fan Daqiang Li Huiwen Deng 2012European Food Research and Technology2012,,6:2
8Effects of nitrogen and phosphorus availability on the decomposition of aquatic plants 显示文摘Xie Yonghong Yu Dan Ren Bo 2004Aquatic Botany2004,80,1:1
9Community Structure of Zooplankton and Water Quality Assessment of Jialing River in Nan Chong显示文摘Liping Ren Zhi Zhang Xue Zeng Yonghong Ma Yu Zeng Caiquan Zhou 2011Procedia Environmental Sciences2011,,:1
10Effects of nitrogen and phosphorus availability on the decomposition of aquatic plants显示文摘Yonghong Xie Dan Yu Bo Ren 2004Aquatic Botany2004,,1:1
11Low-affinity SPL binding sites contribute to subgenome expression divergence in allohexaploid wheat显示文摘Expression divergence caused by genetic variation and crosstalks among subgenomes of the allohexaploid bread wheat(Triticum aestivum.L.,BBAADD)is hypothesized to increase its adaptability and/or plasticity.However,the molecular basis of expression divergence remains unclear.Squamosa promoter-binding protein-like(SPL)transcription factors are critical for a wide array of biological processes.In this study,we constructed expression regulatory networks by combining DAP-seq for 40 SPLs,ATACseq,and RNA-seq.Our findings indicate that a group of low-affinity SPL binding regions(SBRs)were targeted by diverse SPLs and caused different sequence preferences around the core GTAC motif.The SBRs including the low-affinity ones are evolutionarily conserved,enriched GWAS signals related to important agricultural traits.However,those SBRs are highly diversified among the cis-regulatory regions(CREs)of syntenic genes,with less than 8%SBRs coexisting in triad genes,suggesting that CRE variations are critical for subgenome differentiations.Knocking out of Ta SPL7A/B/D and Ta SPL15A/B/D subfamily further proved that both high-and low-affinity SBRs played critical roles in the differential expression of genes regulating tiller number and spike sizes.Our results have provided baseline data for downstream networks of SPLs and wheat improvements and revealed that CRE variations are critical sources for subgenome divergence in the allohexaploid wheat.Hongcui Pei Wan Teng Lifeng Gao Hengbin Gao Xueni Ren Yanhong Liu Jizeng Jia Yiping Tong Yonghong Wang Zefu Lu 2023Science China(Life Sciences)2023,66,4:1
12Nutrient limitation to the decomposition of water hyacinth (Eichhornia crassipes ) 显示文摘XIE Yonghong QI Dan REN Bo 2004Hydrobiologia2004,529,123:1
13Development of subcracks around compound fractures in rock specimen, special issue of pure and applied geophysics显示文摘Zhao Yonghong Liang Haihua Huang Jiefan Geng Jinda Wang Ren 1995Mechanics Problems inGeodynamics1995,145,34:1
14Effects of nitrogen and phosphorus availability on the decomposition of a- quatic pIants显示文摘Xie Yonghong Yu Dan Ren Bo 2004Aquatic Botany2004,80,1:1
15Effects of aging treatment on martensitic transformation of Fe–Ni–Co–Al–Ta–B alloys显示文摘Yonghong Geng Mingjiang Jin Wenjing Ren Weimin Zhang Xuejun Jin 2012Journal of Alloys and Compounds2012,,:1
16Effects of nitrogen and phosphorus availability on the decomposition of aquatic plants显示文摘XIE Yonghong YU Dan REN Bo 2004Aquatic Botany2004,80,:1
17Generalized fuzzy groups and many-valued implications 显示文摘YUAN Xuehai ZHANG Cheng REN Yonghong 2003Fuzzy Sets and Systems2003,138,1:1
18Development and application of neodymium fluorioxide refractory显示文摘 Chen Guohua Zhang Zhijun 2003Naihuo Cailiao2003,147,:1
19An experimental study of the strain fields development prior to failure of a marble plate under compression显示文摘Huang Jiefan Chen Ganglin Zhao Yonghong Wang ren 1990Tectonophysics1990,175,:1
20Taxonomic Revision of Raorchestes menglaensis(Kou,1990)(Amphibia:Anura),with Descriptions of Two New Species from Yunnan,China显示文摘Raorchestes is a group of Bush frogs mainly distributed in South and Southeast Asia that are poorly recognized by morphological criteria.We recognize the true R.menglaensis(Kou) based on 10 specimens newly collected from the type locality.An expanded description is also provided,and we delist the recently reported record,R.parvulus(Boulenger) from China.Combing with morphological and molecular data,two new species are respectively described from Menghai and Lvchun,Yunnan,China.Raorchestes hillisi sp.nov.is distinguished from all other congeners by the following combination of morphological characters:(1) small body sized(males 15.9-17.7 mm,n=7;female 17.5 mm,n=1);(2) head longer than wide;(3) snout longer than eye diameter;(4) the tip of upper jaws slightly notched;(5) internasal space slightly less than interorbital space;(6) tympanum distinct;(7)fingers lacking lateral dermal fringe;(8) outside of toe Ⅰ and both sides of toe Ⅱ lacking lateral dermal fringe,other toes having weak lateral dermal fringes;(9) rudimentary web on toes;(10) lacking a series of tubercles along the outer sides of forearm and foot;(11) discs of fingers and toes not orange.Raorchestes huanglianshan sp.nov.is distinguished from all other congeners by the following combination of morphological characters:(1) small body size(males 17.0-19.6 mm,n=12;female 21.5 mm,n=1);(2) head slightly wider than long or equal;(3) snout longer than eye diameter;(4)the tip of upper jaws slightly notched;(5) internasal space distinctly less than interorbital space(6) tympanum distinct;(7) fingers lacking lateral dermal fringe;(8) toes lacking lateral dermal fringe;(9) rudimentary web on toes;(10)lacking a series of tubercles along the outer sides of forearm and foot;(11) discs of all fingers and toes orange or parts of them orange in life.Ke JIANG Jinlong REN Jian WANG Junfeng GUO Zeng WANG Yonghong LIU Dechun JIANG Jiatang LI 2020Asian Herpetological Research2020,11,4:1
返回顶部 每页显示:
共2页 首页 上一页 第1页 下一页 末页 /2 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费