4篇
您的检索式：作者名="Linping Shen"
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| 1 | Benzene containing polyhydroxyalkanoates homo-and copolymers synthesized by genome edited Pseudomonas entomophila显示文摘Microbial synthesis of functional polymers has become increasingly important for industrial biotechnology.For the first time,it became possible to synthesize controllable composition of poly(3-hydroxyalkanoate)(P3HA)consisting of 3-hydroxydodecanoate(3HDD)and phenyl group on the side-chain when chromosome of Pseudomonas entomophila was edited to weaken itsβ-oxidation.Cultured in the presence of 5-phenylvaleric acid(PVA),the edited P.entomophila produced only homopolymer poly(3-hydroxy-5-phenylvalerate)or P(3HPhV).While copolyesters P(3HPhV-co-3HDD)of 3-hydroxy-5-phenylvalerate(3HPhV)and 3-hydroxydodecanoate(3HDD)were synthesized when the strain was grown on mixtures of PVA and dodecanoic acid(DDA).Compositions of 3HPhV in P(3HPhV-co-3HDD)were controllable ranging from 3%to 32%depending on DDDA/PVA ratios.Nuclear magnetic resonance(NMR)spectra clearly indicated that the polymers were homopolymer of P(3HPhV)and random copolymers of 3HPhV and 3HDD.Their mechanical and thermal properties varied dramatically depending on the monomer ratios.Our results demonstrated the possibility to produce tailor-made,novel functional PHA using the chromosome edited P.entomophila. | SHEN Rui CAI LongWei MENG DeChuan WU LinPing GUO Kai DONG GuoXing LIU Lei CHEN JinChun WU Qiong CHEN GuoQiang | 2014 | Science China(Life Sciences)2014，57，1： | 4 |
| 2 | Is 1.28 parts per million biomarker specific for neural progenitor cells?显示文摘Nuclear magnetic resonance-visible mobile lipid,at 1.28 parts per million(ppm),is thought to be due to mobile lipid droplets formed in cells and has been considered unique for neural progenitor cells.However,this idea remains controversial.The present study examined the 1.28 ppm biomarker in other stem cells and non-stem cells,and explored the relationship between 1.28 ppm biomarker and mobile lipid droplets.1H nuclear magnetic resonance spectroscopy of EC109 cells,mesenchymal stem cells(MSCs) and adipogenic cells differentiated from MSCs was performed.Results show that 1.28 ppm biomarker was observed in human MSCs,but was absent from EC109 cells.Following adipogenic differentiation induced for 2 weeks,the 1.28 ppm biomarker climbed remarkably,with mobile lipid droplet generation,suggesting that the 1.28 ppm biomarker is not specific for neural progenitor cells because it is also observed in MSCs and adipogenic-induced differentiated cells.Moreover,it is possible to monitor MSCs differentiation following cell transplantation,using 1.28 ppm biomarker changes. | Zhifeng Xu Chongyang Shen Haiqiang Zhu Yaowen Chen Linping Wu Peng Huang YeyuXiao Zhiwei Shen Li Pang Xiuqin Guo Lian Ma Renhua Wu | 2010 | Neural Regeneration Research2010，5，15： | 2 |
| 3 | A design of photonic crystal fiber with variable air-hole radius for broadband dispersion compensation显示文摘 | Linping Shen Weiping Huang Chenglin Xu | 2004 | Proc of SPIE2004，5579，： | 1 |
| 4 | Natural leather based gamma-ray shielding materials enabled by the coordination of well-dispersed Bi^(3+)/Ba^(2+)ions and RE_(2)O_(3)coating显示文摘Gamma rays is widely used in modern science and technology,but it may cause health damage to practitioners.In the present study,natural composites based on leather and high-Z elements(atomic number≥56)were fabricated and used as gamma rays shielding materials.These shielding materials were prepared by coating rare earth nanoparticles(Er_(2)O_(3)or La2O3)onto the surface of natural leather,which was first impregnated with Bi^(3+)and Ba^(2+).Results show that the attenuation efficiency of the prepared Er1.31Bi5.46-NL(1.31 and 5.46 mmol cm^(−3)loaded elements)with thickness of 3.2 mm was 61.57%for incident rays at 121.78 keV(152Eu)and reached 96.4%in the incident of 59.5 keV(241Am),which is comparable to that of 0.25-mm lead plate(54.54 mmol cm−3).In addition,these natural-leather-based shielding materials exhibited low density(approximately 1/10 of Pb),high strength and wearable behaviors. | Yue Shen Jibo Zhou Zheng Han Hao Li Linping Yan Xuepin Liao Bi Shi | 2022 | Journal of Leather Science and Engineering2022，4，1： | 0 |
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