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| 1 | Investigation on the photo-induced de-oxygenation process of myoglobin in aqueous solution by use of fluorescence spectroscopy显示文摘A photo-induced de-oxygenation process of myoglobin (Mb) in aqueous solution was investigated by use of fluorescence spectroscopy. The spectra are characterized by the fluorescence intensity declining gradually after each scan,and the decay of fluorescence intensity being significant in each scan,which is assigned to the release of oxygen from the opening of the heme-pockets induced by illumination. More illumination will cause more release of oxygen; if the temperature of an Mb solution is increased when it is illuminated,the rate of de-oxygenation will be higher. It was found that ligand-oxygen in Fe-porphyrin could be removed from Mb by nitrogen. This indicates that the interac-tion between oxy-Mb and other different gases can be tested by the method of fluorescence spectros-copy. In addition,fluorescence spectroscopy can be employed to probe the energy transfer between Fe-porphyrin and tryptophan or tyrosine in Mb molecules. | MA JunYan ZHENG XueFang TANG Qian MA Jing GAO DaBin HU JiHan | 2008 | Science China Chemistry2008，51，5： | 2 |
| 2 | The rapid development of birdwatching in mainland China: a new force for bird study and conservation显示文摘 | ZHIJUN MA YIXIN CHENG JUNYAN WANG XINGHUA FU | 2012 | Bird Conservation International2012，，： | 2 |
| 3 | Modeling of 2Dlayout design system based on convex hull plus rubber bandanalog 显示文摘 | Liao Xiaoping Lu Juan Ma Junyan | 2012 | Applied Mechanics and Materials2012，，： | 1 |
| 4 | Experimental and theoretical study on N-hydroxyphthalimide and its derivatives catalyzed aerobic oxidation of cyclohexylbenzene显示文摘The liquid phase oxidation of cyclohexylbenzene(CHB)is a new green synthetic approach to cyclohexylbenzene-1-hydroperoxide(CHBHP),a key intermediate for preparing phenol and cyclohexanone.In this work,aryl-substituted(Cl and Br)derivatives of N-hydroxyphthalimide(NHPI)were synthesized and their catalytic performances for CHB oxidation were studied.In addition,geometric optimization and transition state search were performed using DFT calculations.Both experimental and theoretical studies have proven that chloro-substitution on NHPI can significantly improve its catalytic effects on the oxidation of CHB by oxygen.Compared with NHPI,CHB conversion and selectivity of CHBHP over Cl;NHPI were increased by 10.47%and 13.24%.The strategy of aryl-substituting NHPI with halogen atoms proposed in this study would provide a potential way to the development of new NHPI-based catalysts for aerobic oxidation reactions. | Yufei Yang Jieyi Ma Junyan Wu Weixia Zhu Yadong Zhang | 2022 | Chinese Journal of Chemical Engineering2022，35，4： | 1 |
| 5 | Hypocotyl elongation based on HY5 transcription factor in cold resistant winter rapeseed(Brassica napus L.)显示文摘Winter rape(Brassica napus L.)is better than other edible oil crops in China,but poor cold resistance is the key factor restricting its development.Hypocotyl length was found closely related to cold tolerance.The correlation between hypocotyl length and semi-lethal low temperature was significant,and the highest correlation between hypocotyl length and LT50 of autumn sowing was 0.9557.When the hypocotyl were treated at low temperature,the cells were seriously damaged and formed cavity structures,with cell walls seriously damaged or merged into each other.The positive regulation gene of hypocotyl length in resistant line of VHTSG 10 was identified as HY5(transcription factor HY5-like)by qPCR,and bZIP transcription factor was found to be its conserved domain.Fused gene by GFP and HY5 from VHTSG 10 was transient transferred into Nicotiana benthamiana cells.Corresponding to the 35S:GFP widely distributed in plasma membrane of leaf epidermis,the fusion protein 35S:HY5-GFP was mainly distributed in nucleus.Thus we regarded BnHY5 gene is a key gene related to cold tolerance and hypocotyl length in B.napus. | Jiaojiao Jin Wancang Sun Junyan Wu Yan Fang Xuecai Li Li Ma Lijun Liu Rui Zeng | 2022 | Oil Crop Science2022，7，1： | 1 |
| 6 | Research and motion analysis of multiobject compact layout based on CPR in 2D显示文摘 | Zheng Yu-jia Long Feng-ying Ma Junyan | 2014 | Applied Mechanics and Materials2014，，607： | 1 |
| 7 | Digital Modeling and Movement Resolution of Rubber Band Analogy for 2D Packing Problem显示文摘 | Junyan Ma Xiaoping Liao Juan Lu | 2012 | Applied Mechanics and Materials2012，，220223： | 1 |
| 8 | Flavipin in Chaetomium globosum CDW7, an endophytic fungus from Ginkgo biloba , contributes to antioxidant activity显示文摘 | Yonghao Ye Yu Xiao Liang Ma Hongxia Li Zhenglu Xie Minghua Wang Haitian Ma Huaiwu Tang Junyan Liu | 2013 | Applied Microbiology and Biotechnology2013，，16： | 1 |
| 9 | Horizontal transfer of vanA between probiotic Enterococcus faecium and Enterococcus faecalis in fermented soybean meal and in digestive tract of growing pigs显示文摘Background: The aim of this study was to investigate the intergeneric transfer of vancomycin resistance gene vanA between probiotic enterococci in the fermentation progress of soybean meal and in the digestive tract of growing pigs.One vanA genotype vancomycin resistant E.faecium strain,Efm4,and one chloramphenicol-resistant E.faecalis strain,Efs2,were isolated from twenty-nine probiotic basis feed material/additive samples.For in vitro conjugation,Efm4 and Efs2 were used as starter to ferment soybean meal.For in vivo conjugation,thirty growing pigs were randomly assigned to five groups(n = 6),treated with a basic diet,or supplemented with 10% fermented soybean meal,1% Efm4,5% Efs2 or a combination of 1% Efm4 + 5% Efs2 for 7 d,respectively.Fecal samples of pigs in each group were collected daily for the isolation and dynamic analysis of Efm4,Efs2 and transconjugants.The sequence types(STs) of Efm4,Efs2 and transconjugants were analyzed by multilocus sequence typing(MLST).The vanA harboring plasmid in Efm4 and transconjugants was analyzed by S1-pulsed field gel electrophoresis(PFGE)and further verified by multiple alignments.Results: The results showed that,in FSBM,transconjugants were detected 1 h after the fermentation,with a conjugation frequency of ~ 10^-3 transconjugants/recipient.Transconjugants proliferated with Efm4 and Efs2 in the first 8 h and maintained steadily for 10 d till the end of the experiment.Additionally,in vivo experiment showed that transcojugants were recovered in one of six pigs in both FSBM and Efm4 + Efs2 groups,with conjugation frequency of ~ 10^-5 and ~ 10^-4,respectively.MLST revealed the ST of Efm4,Efs2 and transconjugants was ST1014,ST69 and ST69,respectively.S1-PFGE confirmed the existence of the vanA-harboring,142,988-bp plasmid,which was also a multi-drug resistant plasmid containing Tn1546-like transposon.Conclusions: The findings revealed the potential safety hazard existing in the commercial probiotic enterococci in China,because the horizontal transfer from farm to fork could potentially pose a safety risk to the public. | Ning Li Haitao Yu Hongbin Liu Yuming Wang Junyan Zhou Xi Ma Zheng Wang Chengtao Sun Shiyan Qiao | 2019 | Journal of Animal Science and Biotechnology2019，10，3： | 1 |
| 10 | Modeling of 2D Layout Design System based on Convex Hull plus Rubber Band Analog 显示文摘 | Liao Xiaoping Lu Juan Ma Junyan | 2012 | Applied Mechanics and Materials2012，，： | 1 |
| 11 | Efficient Prediction Structure for Key Pictures in muhiview video coding显示文摘 | Junyan Huo Yilin Chang Yanzhuo Ma | 2011 | Photonics and Optoelectroi- cs(SOPO)2011，，： | 1 |
| 12 | Effect of thidiazuron on somatic embryogenesis of Cayratia japonica显示文摘 | Junyan Zhou Hui Ma Fuxing Guo Xintan Luo | 1994 | Plant Cell Tissue and Organ Culture1994，，1： | 1 |
| 13 | Study on the Adhesive for the Production of High Strength Four Layer Composite Corrugated Board显示文摘In order to study of adhesive which is applicable to the production of high strength four layer composite corrugated board,the composite corrugated medium was respectively coated with cassava starch adhesive,environmental-friendly modified water glass binder,CP-88 starch adhesive,polyvinyl alcohol adhesive and polyvinyl acetate adhesive,then the edgewise crush resistance and flat crush resistance contrast experiment on produced corrugated board samples was tested.The experiment results demonstrated that the produced corrugated board with environmental-friendly modified water glass binder had high edgewise crush resistance,general flat crush resistance and more economic,so the environmental-friendly modified water glass binder can be used for the production of high strength four layer composite corrugated board. | Junyan Huang Linlin Yu Huizhong Zhang Jie Ma | 2015 | 材料科学研究(中英文版)2015，4，3： | 0 |
| 14 | A Comprehensive Method for the Risk Assessment of Ground Fissures:Case Study of the Eastern Weihe Basin显示文摘Ground fissures are influenced by the coupling of geological factors and human activi-ties.They threaten the safety of infrastructure and restrict town planning in many areas in China.One of the area most severely affected by ground fissures is the Weihe Basin in North China,which has the most extensive distribution of ground fissures and all the elements that control their occurrence,pro-viding an ideal study area for the study of ground fissures.In this study,we took the eastern Weihe Ba-sin as the study area and determined the distribution and hazard characteristics of ground fissures via field investigation.Based on the analytic hierarchy process,we propose a multi-level,comprehensive method for evaluating the hazards of ground fissures.This method considers the geological back-ground,development status,and triggering factors of ground fissures,including all nine currently known assessment indices of ground fissures.We used judgment matrices to rank the constructed ground fissure assessment index system at the single and total levels and quantified the nine assessment indices of ground fissures according to the field survey data.Finally,we plotted the ground fissure risk zoning map and evaluated the ground fissure risk at the study area.Our findings indicated that the proposed method could facilitate ground fissure hazard assessment and prediction and provide support for hazard prevention and urban/rural planning. | Zhijie Jia Jianbing Peng Quanzhong Lu Penghui Ma Jianwei Qiao Feiyong Wang Mingdong Zang Yang Liu Junyan Zhao Fengji Zhu | 2023 | Journal of Earth Science2023，34，6： | 0 |
| 15 | A monolithic K-band phase-locked loop for microwave radar application显示文摘A monolithic K-band phase-locked loop(PLL) for microwave radar application is proposed and implemented in this paper. By eliminating the tail transistor and using optimized high-Q LC-tank, the proposed voltage-controlled oscillator(VCO) achieves a tuning range of 18.4 to 23.3 GHz and reduced phase noise. Two cascaded current-mode logic(CML) divide-by-two frequency prescalers are implemented to bridge the frequency gap, in which inductor peaking technique is used in the first stage to further boost allowable input frequency.Six-stage TSPC divider chain is used to provide programmable division ratio from 64 to 127, and a second-order passive loop filter with 825 kHz bandwidth is also integrated on-chip to minimize required external components.The proposed PLL needs only approximately 18.2 μs settling time, and achieves a wide tuning range from 18.4 to 23.3 GHz, with a typical output power of –0.84 dBm and phase noise of 91:92 d Bc/Hz @ 1 MHz. The chip is implemented in TSMC 65 nm CMOS process, and occupies an area of 0.56 mm^2 without pads under a 1.2 V single voltage supply. | Guangyao Zhou Shunli Ma Ning Li Fan Ye Junyan Ren | 2017 | Journal of Semiconductors2017，38，2： | 0 |
| 16 | Xixiang Biota——Another Rare Scientific Window of the Cambrian Explosion显示文摘Objective The Xixiang biota is a specially preserved micro oryctocoenose discovered in the Lower Cambrian Kuanchuanpu member of Dengying Formation at Zhangjiagou section of Xixiang County in southern Shaanxi Province.The Kuanchuanpu member is a set of neritic carbonate sedimentary formation containing phosphorus and silicon.Its lithology is mainly | LIU Yunhuan WANG Qi SHAO Tiequan DONG Junyan TANG Hanhua ZHANG Yanan JIANG Kaituo HU Bo WANG Zhaojing PANG Guotao MA Yingying FAN Ziyang | 2016 | Acta Geologica Sinica(English Edition)2016，90，3： | 0 |
| 17 | Mass Transfer and Reaction Kinetics of PH3 Absorption with Pd(Ⅱ )-Cu( Ⅱ ) in Double-Stirred Cell显示文摘 | Guangfei Qu Yixing Ma Junyan Li Yilu Lin Ping Ning | 2013 | 化学发展前沿(中英文版)2013，3，2： | 0 |
| 18 | Differential regulation of JAK1 expression by ETS1 associated with predisposition to primary biliary cholangitis显示文摘Primary biliary cholangitis(PBC)is an autoimmune liver disease characterized by the destruction of intrahepatic small bile ducts and progressive cholestasis,eventually leading to liver cirrhosis and hepatic failure without appropriate treatment(Terziroli Beretta-Piccoli et al.,2019). | Peng Jiang Chan Wang Mingming Zhang Ye Tian Weifeng Zhao Junyi Xin Yexi Huang Zhibin Zhao Wenjuan Sun Jie Long Ruqi Tang Fang Qiu Xingjuan Shi Yi Zhao Li Zhu Na Dai Lei Liu Xudong Wu Jinshan Nie Bo Jiang Youlin Shao Yueqiu Gao Jianjiang Yu Zhigang Hu Zhidong Zang Yuhua Gong Yaping Dai Lan Wang Ningling Ding Ping Xu Sufang Chen Lu Wang Jing Xu Luyao Zhang Junyan Hong Ruonan Qian Hu Li Xuan Jiang Congwei Chen Wenyan Tian Jian Wu Yuzhang Jiang Chongxu Han Kui Zhang Hong Qiu Li Li Hong Fan Liming Chen Jianqiong Zhang Zhongsheng Sun Xiao Han Zhenhua Dai Erguang Li M.Eric Gershwin Zhexiong Lian Xiong Ma Michael F.Seldin Weichang Chen Meilin Wang Xiangdong Liu | 2023 | Journal of Genetics and Genomics2023，50，10： | 0 |
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