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64篇 您的检索式:作者名="Wu Yueming"
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1Clean synthesis of biodiesel over solid acid catalysts of sulfonated mesopolymers显示文摘FDU-15-SO3H,a solid acid material prepared from the sulfonation of FDU-15 mesoporous polymer,has been demonstrated to serve as an efficient catalyst in the esterification of palmitic acid with methanol as well as in the transesterification of fatty acid-edible oil mixture.FDU-15-SO3H achieved an acid conversion of 99.0% when the esterification was carried out at 343 K with a methanol/palmitic acid molar ratio of 6:1 and 5 wt% catalyst loading.It was capable of giving 99.0% yield of fatty acid methyl esters (FAME) when the transesterification of soybean oil was performed at 413 K and the methanol/oil weight ratio of 1:1.FDU-15-SO3H was further applied to the transesterification/esterification of the oil mixtures with a varying ratio of soybean oil to palmitic acid,which simulated the feedstock with a high content of free fatty acids.The yield of FAME reached 95% for the oil mixtures containing 30 wt% palmitic acid.This indicated the sulfonated mesopolymer was a potential catalyst for clean synthesis of fuel alternative of biodiesel from the waste oil without further purification.FANG Lin,XING Rong,WU HaiHong,LI XiaoHong,LIU YueMing & WU Peng Shanghai Key Laboratory of Green Chemistry and Chemical Processes Department of Chemistry,East China Normal University,Shanghai 200062,China 2010Science China Chemistry2010,53,7:7
2Effective and biocompatible antibacterial surfaces via facile synthesis and surface modification of peptide polymers显示文摘It is an urgent need to tackle drug-resistance microbial infections that are associated with implantable biomedical devices.Host defense peptide-mimicking polymers have been actively explored in recent years to fight against drug-resistant microbes.Our recent report on lithium hexamethyldisilazide-initiated superfast polymerization on amino acid N-carboxyanhydrides enables the quick synthesis of host defense peptide-mimicking peptide polymers.Here we reported a facile and cost-effective thermoplastic polyurethane(TPU)surface modification of peptide polymer(DLL:BLG=90:10)using plasma surface activation and substitution reaction between thiol and bromide groups.The peptide polymer-modified TPU surfaces exhibited board-spectrum antibacterial property as well as effective contact-killing ability in vitro.Furthermore,the peptide polymer-modified TPU surfaces showed excellent biocompatibility,displaying no hemolysis and cytotoxicity.In vivo study using methicillin-resistant Staphylococcus aureus(MRSA)for subcutaneous implantation infectious model showed that peptide polymer-modified TPU surfaces revealed obvious suppression of infection and great histocompatibility,compared to bare TPU surfaces.We further explored the antimicrobial mechanism of the peptide polymer-modified TPU surfaces,which revealed a surface contact-killing mechanism by disrupting the bacterial membrane.These results demonstrated great potential of the peptide-modified TPU surfaces for practical application to combat bacterial infections that are associated with implantable materials and devices.Ziyi Lu Yueming Wu Zihao Cong Yuxin Qian Xue Wu Ning Shao Zhongqian Qiao Haodong Zhang Yunrui She Kang Chen Hengxue Xiang Bin Sun Qian Yu Yuan Yuan Haodong Lin Meifang Zhu Runhui Liu 2021Bioactive Materials2021,6,12:5
3Characteristics of coal sludge slurry prepared by a wet-grinding process显示文摘Coal sludge slurry(CSS) is an alternative fuel and a potential competitive method for sludge reduction.Based on the researches of coal water slurry, we studied CSSs by using a wet-grinding process with different types of regional municipal sludge(sludge) in an orthogonal experiment. The sludge type,sludge mixing proportion, dosage of dispersant, and grinding time were tested in this study. The results show that water content and its occurrence characteristics in the sludge have primary hindering influences on slurry ability. The range of fixed-viscosity concentrations with raw wet sludge is from 50.78%to 44.40%(by weight), while the range is from 53.35% to 51.51%(by weight) with dry sludge. All of the CSSs exhibit shear-thinning behaviors with different variation trends, especially the CSSs with more than 15%(by weight) raw wet sludge in it. Adding the same proportion of raw wet sludge increases the thixotropic properties of CSSs and the highest area of thixotropy loop is 3065 Pa/s, while the highest value of dry sludge is 1798 Pa/s. Hydrophilic group plays an important role in adsorbing water and building three-dimension networks with other particles, which is the main reason for CSS properties.Therefore, the mechanism can be used to find the way for making high quality CSS.Ma Shaolian Wu Guoguang Meng Xianliang Zhou Rui Chu Ruizhi Miao Zhenyong Qi Yueming 2016International Journal of Mining Science and Technology2016,26,5:3
4SHP2 regulates skeletal cell fate by modifying SOX9 expression and transcriptional activity显示文摘Chondrocytes and osteoblasts differentiate from a common mesenchymal precursor, the osteochondroprogenitor(OCP), and help build the vertebrate skeleton. The signaling pathways that control lineage commitment for OCPs are incompletely understood. We asked whether the ubiquitously expressed protein-tyrosine phosphatase SHP2(encoded by Ptpn11) affects skeletal lineage commitment by conditionally deleting Ptpn11 in mouse limb and head mesenchyme using 'Cre-lox P'-mediated gene excision.SHP2-deficient mice have increased cartilage mass and deficient ossification, suggesting that SHP2-deficient OCPs become chondrocytes and not osteoblasts. Consistent with these observations, the expression of the master chondrogenic transcription factor SOX9 and its target genes Acan, Col2a1, and Col10a1 were increased in SHP2-deficient chondrocytes, as revealed by gene expression arrays, q RT-PCR, in situ hybridization, and immunostaining. Mechanistic studies demonstrate that SHP2 regulates OCP fate determination via the phosphorylation and SUMOylation of SOX9, mediated at least in part via the PKA signaling pathway. Our data indicate that SHP2 is critical for skeletal cell lineage differentiation and could thus be a pharmacologic target for bone and cartilage regeneration.Chunlin Zuo Lijun Wang Raghavendra M.Kamalesh Margot E.Bowen Douglas C.Moore Mark S.Dooner Anthony M.Reginato Qian Wu Christoph Schorl Yueming Song Matthew L.Warman Benjamin G.Neel Michael G.Ehrlich Wentian Yang 2018Bone Research2018,6,2:3
5Functional characterization of oligopeptide transporter 1 of dairy cows显示文摘Background: It is wel known that peptides play a vital role in the nutrition and health of dairy cows. Bovine oligopeptide transporter 1(bP epT 1) is involved in the peptide transport process in the gastrointestinal tracts of dairy cows. However,little information is known in the characteristics of bP epT 1. Therefore, the purpose of this study was to characterize bP epT 1 functional y using a mammalian cel expression system. The uptake of radiolabeled dipeptide glycyl-sarcosine([3 H]-Gly-Sar)into the bP epT 1-transfected Chinese hamster ovary cel s was measured at various pH and substrate concentrations and with or without 15 other smal peptides that contained Met or Lys.Results: Western blot results showed that the abundance of bP epT 1 protein in the jejunum and ileum are the highest in the gastrointestinal tract of dairy cows. The uptake of [3 H]-Gly-Sar by b Pep T1-Chinese hamster ovary cells was dependent on time, p H, and substrate concentration, with a low Kmvalue of 0.94 ± 0.06 mmol/L and a maximum velocity of 20.80 ± 1.74 nmol/(mg protein · 5 min). Most of the di-and tripeptides were the substrates of b Pep T1,based on substrate-competitive studies. However, bP epT 1 has a higher affinity to the peptides with shorter chains, greater hydrophobicity, and negative or neutral charges.Conclusions: These results demonstrated for the first time the functional characteristics of bP epT 1, and they provide a new insight and better understanding into its vital role in absorbing a wide range of peptides from the digestive tract of dairy cows.Qingbiao Xu Zhixuan Liu Hongyun Liu Fengqi Zhao Xinbei Huang Yueming Wu Jianxin Liu 2018Journal of Animal Science and Biotechnology2018,9,2:2
6Study of the development of large repeat construction for heald frame weaving显示文摘 1990International Textile Bulletion1990,,3:1
7Synthesis of Ti-MWW by a dry-gel conversion method显示文摘Wu Peng Miyaji Takayuki Liu Yueming 2005Catalysis Today2005,99,:1
8Web-based virtual operating of CNC milling machine tools显示文摘He Hanwu Wu Yueming 2009Computers in Industry2009,60,9:1
9Modeling and energy simulation of the variable refrigerant flow air conditioning system with water-cooled condenser under cooling conditions显示文摘Li Yueming Wu Jingyi Sumio Shiochi 2009Energy and Buildings2009,41,9:1
10Molten steel level stability in continuous casting slab mold under electromagnetic stirring显示文摘Fluctuation of molten steel level in continuous casting process is a critical issue. The analytic function for the liquid steel surface stability index( F) of the continuous casting slab mold under the action of electromagnetic stirring was derived. The effects on the F value of the electromagnetic field,casting mold,submerged entry nozzle,and casting speed were observed,and the stability of the process parameters of a practical continuous casting system was evaluated. The main results generated are as follows:①Based on the free flow jet theory,a formula is established for the level stability index of continuous casting slab mold under electromagnetic stirring.②According to the results of calculation,the various parameters in decreasing order of the magnitude of their influence are magnetic flux density,nozzle submersion depth,casting speed,slab width,stirring current frequency,and nozzle side-hole inclination angle.③For practical continuous casting with a slab thickness of 230 mm,the calculated F values are between 3 and 5 for different matches between slab width and casting speed,but the parameter optimization space is much larger for wider slab widths and lower casting speeds.WEN Hongquan WU Cunyou ZHOU Yueming 2019Baosteel Technical Research2019,13,1:1
11Rapid quantitative detection of brucella melitensis by a label-free impedance immunosensor based on a gold nanoparticle-modified screen-printed carbon electrode 显示文摘Wu Haiyun Zuo Yueming Cui Chuanjin 2013Sensors2013,13,7:1
12Removal of heavy metal ions from wastewater by a novel HEA/AMPS copolymer hydrogel:prepa- ration,characterization, and mechanism 显示文摘Zhengkui Li Yueming Wang Ningmei Wu 2013En- vironmental Science and Pollution Research2013,20,3:1
13Nutritional value of detoxified Jatropha curcas seed cake protein isolates using rats as an animal model显示文摘A bioassay study was conducted to investigate the effects of substituting casein with graded levels of detoxified Jatropha curcas seed cake protein isolates(JPI) as a protein source on the growth performance,feed efficiency ratio(FER) and its protein values using rats as an animal model. Thirty 21-day-old male Spraguee Dawley weaned rats were randomly divided into 5 groups, each group with 6 replications(n = 1). Each group consumed one of the following diets: protein-free, casein(CAS) and JPI diets(JPI20,JPI40 and JPI60; different levels of JPI to replace the casein at concentrations of 20%, 40% and 60% on crude protein basis). Feed intake and protein intake showed no difference among the rats fed JPI20, JPI40 and CAS diets(P > 0.05). However, these parameters were lower in the rats fed JPI60 than in rats fed CAS(P < 0.05). The rats fed diets containing JPI had lower body weight gain, protein efficiency ratio and net protein retention than those fed CAS diet(P < 0.05). When the level of JPI used to replace the casein was lower than 40%, protein efficiency ratio(PER) was close to or higher than 2.0, which suggests that JPI could be viewed as a high-quality protein. Inclusion of JPI in the diet decreased alkaline phosphatase activity. The values were significantly lower in rats fed JPI20 and JPI40than in rats fed CAS(P < 0.05). No histopathological changes were observed in livers and kidneys in the rats fed JPI diets. The results demonstrate that JPI could be used as an efficient protein source at a level of no more than 40% of dietary protein source.Yinuo Zhao Yubao Wang Haifeng Wang Yueming Wu Harinder P.Makkar Jianxin Liu 2018Animal Nutrition2018,,4:1
14Progress on research of induction heating in Baosteel显示文摘Owing to the development of newproducts and higher requirement of product properties,the current existing induction heating technology of Baosteel can no longer satisfy the newrequirements of the product line.Control of the induction heating temperature to an appropriate value is a key consideration in induction heating technology. To obtain acculturated temperatures,investigations were focused on the parameters of an induction heating system,including those of induction heating equipment and heating processes. In these investigations,computer simulation was used to model the induction heating process,followed by physical experimentation to verify and improve the simulation model; finally,optimized induction heating parameters were suggested. The use of computer simulations dramatically decreased physical experimental times,and the computed heating parameters were used to guide the physical experimentation and design of the product line; this increased the efficiency of subsequent investigations. This study focuses on the development of induction heating technology in Baosteel,which includes the overall induction heating technology used in manufacturing backup rollers and in the thermomechanical control process.WU Cunyou ZHOU Yueming JIN Xiaoli 2016Baosteel Technical Research2016,10,1:1
15Fluorescent polystyrene microspheres with large Stokes shift by fluorescence resonance energy transfer显示文摘Wu Welbing Wang Mingliang Sun Yueming 2008J Phys Chem Solids2008,,69:1
16Rapid quantitative detection of brucella melitensis by a label-free impedance immunosensor based on a gold nanoparticle-modified screen-printed carbon electrode显示文摘Wu Haiyun Zuo Yueming Cui Chuanjin 2013Sensor2013,13,:1
17Automatic image-based detection technology for two critical growth stages of maize: Emergence and three-leaf stage显示文摘Zhenghong Yu Zhiguo Cao Xi Wu Xiaodong Bai Yueming Qin Wen Zhuo Yang Xiao Xuefen Zhang Hongxi Xue 2013Agricultural and Forest Meteorology2013,,:1
18Effects of phytonutrients on growth performance, antioxidative status,and energy utilization of broilers fed low energy diets显示文摘Two experiments were conducted to investigate the effects of phytonutrients(PN)on growth performance.antioxidant status,intestinal morphology,and nutrient utilization of birds fed low energy diets.In Exp.1.a total of 1.440 one-day-old Ross 308 male broiler chickens were randomly divided into 3 treatment groups,with 16 replicates per treatment(48 pens;30 birds per pen).Birds in treatment 1 were fed diets with normal energy content(NE).Birds in treatment 2 were fed NE diet but with 60 kcal removed(LE).Birds in treatment 3 were assigned to LE diet supplemented with PN(LE + PN).Results indicated that LE diet increased feed conversion ratio(FCR)compared with NE from d 1 to 38.while LE + PN diet prevented this response(P= 0.02).At d 26.birds in the LE + PN group had the highest ileal and jejunal villus height to crypt depth(VH:CD)ratio.At d 39.PN supplementation improved ileal and jejunal VH:CD ratio,compared with LE group.Moreover,birds fed PN diets received a better economic profit,In Exp.2,360 one-day-old Ross 308 male broiler chickens were used in a metabolism study.The treatments used in Exp.2 were the same as those in Exp.1,with 4 replicates(pens)and 30 birds in each replicate.Dietary apparent metabolism energy(AME),energy and protein digestibility were determined between 21 and 28 d of age.Results showed that chickens fed LE + PN diet tended to have greater AME(P= 0.02)and nictrogen-corrected apparent metabolism energy(AMEn)(P= 0.03)than birds fed LE diets.It was concluded that LE+ PN showed a potential advantage to improve feed conversion and gut health of broilers,as well as economic profits.Lei Yan Sha An Zunzhou Lv Zhengguo Wang Yueming Wu Yutao Zhu Min Zhao Chunhua Sun Mingbin Lv Zhengpeng Zhu Yuming Guo 2019Animal Nutrition2019,,3:1
19Experimental validation of the simulation module of the water-cooled variable refrigerant flow system under cooling operation 显示文摘LI Yueming WU Jingyi SHIOCHI Sumio 2010Applied Energy2010,87,5:1
20Alkali-metal hexamethyldisilazide initiated polymerization on alpha-amino acid N-substituted N-carboxyanhydrides for facile polypeptoid synthesis显示文摘Polypeptoids have been explored as mimics of polypeptides,owing to polypeptoids'superior stability upon proteolysis.Polypeptoids can be synthesized from one-pot ring-opening polymerization of amino acid N-substituted N-carboxyanhydrides(NNCAs).However,the speed of polymerization of NNCAs can be very slow,especially for NNCAs bearing a bulky N-substitution group.This hindered the exploration on polypeptoids with more diverse structures and functions.Therefore,it is in great need to develop advanced strategies that can accelerate the polymerization on inactive NNCAs.Hereby,we report that lithium/sodium/potassium hexamethyldisilazide(Li/Na/KHMDS)initiates a substantially faster polymerization on NNCAs than do commonly used amine initiators,especially for NNCAs with bulky N-substitution group.This fast NNCA polymerization will increase the structure diversity and application of polypeptoids as synthetic mimics of polypeptides.Yueming Wu Min Zhou Kang Chen Sheng Chen Ximian Xiao Zhemin Ji Jingcheng Zou Runhui Liu 2021Chinese Chemical Letters2021,32,5:1
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