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| 1 | Preparation and Characterization of Poly(melamine-urea-formaldehyde) Tetradecanol Microcapsules Coated with Silver Particles显示文摘A novel type of microencapsulated phase change materials(microPCMs)based on 1-tetradecanol(TD)core and silver-coated poly(melamine-urea-formaldehyde)(MUF)shell was successfully synthesized by in situ polymerization method followed by silver reduction.Fourier-transform infrared spectroscopy(FTIR),X-ray diffraction(XRD),scanning electron microscopy with energy dispersive X-ray spectrometry(SEM/EDS),thermogravimetric analysis(TGA)and differential scanning calorimetry(DSC)were used to characterize the chemical structure,morphology and thermal properties of the as-prepared silver-coated microPCMs.FTIR analysis confirmed the successful encapsulation of TD with MUF wall materials.The SEM and EDS results indicated that the prepared silver-coated MUF microPCMs exhibited uniform spherical shape with a perfect silver outer layer.From XRD analysis,the Ag metal dispersed on the surface of microcapsules presented the form of elementary substance.The deposition weight of silver particles on the microcapsule surface increased with increasing the amount of silver nitrate,as indicated by EDS tests.The DSC results indicated that the melting temperature and the melting latent heat of microPCMs modified with 0.7g of silver nitrate in 150mL aqueous solution were 39.2°C and 126.6J·g^-1,respectively.Supercooling of the microPCMs coated with silver particles was effectively suppressed,compared with that of microPCMs without Ag.Thus,the encapsulation of TD with silver-coated MUF shell developed by this work can be an effective method to prepare the microPCMs with enhanced thermal transfer performance and phase change properties. | WANG Haiping GUI Pengce ZHU Yangqian HU Siqian | 2020 | Journal of Wuhan University of Technology(Materials Science)2020，35，2： | 3 |
| 2 | Simulating global soil-CO_2 flux and its response to climate change显示文摘It has been argued that increased soil respiration would become a major atmospheric source of CO\-2 in the event of global warming. The simple statistical models were developed based on a georeferenced database with 0 5°×0 5° longitude/latitude resolution to simulate global soil\|CO\-2 fluxes, to investigate climatic effects on these fluxes using sensitivity experiments, and to assess possible responses of soil\|CO\-2 fluxes to various climate change scenarios. The statistical models yield a value of 69 PgC/a of global soil\|CO\-2 fluxes for current condition. Sensitivity experiments confirm that the fluxes are responsive to changes in temperature, precipitation and actual evapotranspiration, but increases in temperature and actual evapotranspiration affect soil\|CO 2 fluxes more than increases in precipitation. Using climatic change projections from four global circulation models, each corresponding to an equilibrium doubling of CO 2, it can be found that the largest increases in soil\|CO 2 fluxes were associated with the boreal and tundra regions. The globally averaged soil\|CO 2 fluxes were estimated to increase by about 35% above current values, providing a positive feedback to the greenhouse effect. | PENG Chang\|hui 1* , Michael J. Apps\+2 (1 Ontario Forest Research Institute, Ministry of Natural Resources, 1235 Queen Street East, Sault Ste. Marie, ON P6A 2E5,Canada. E\|mail: pengc@gov.on.ca 2 Morthern Forestry Center, Canadian Forest Serv | 2000 | Journal of Environmental Sciences2000，12，3： | 2 |
| 3 | Collagenasadouble-edgedswordintumorprogression显示文摘 | FangM YuanJ PengC LiY | 2014 | TumourBiol2014，35，4： | 1 |
| 4 | Muhiseale en- tropy analysis of complex physiologic time series 显示文摘 | COSTA M GOLDBERGER A L PENGC K | 2002 | Phys Rev Lett2002，89，06： | 1 |
| 5 | DevelopingandvalidatingnonlinearheightdiametermodelsformajortreespeciesofOntario’sborealforest显示文摘 | PengC ZhangL LiuJ | 2011 | NorthernJournalofAppliedForestry2011，18，： | 1 |
| 6 | Promisingactivatedcarbonsderivedfrom wastetea-leavesandtheirapplicationinhighperformancesupercapacitorselectrodes显示文摘 | PengC YanXB WangRT etal | 2013 | ElectrochimicaActa2013，87，： | 1 |
| 7 | Acomparativestudyonelec-trochemicalco-depositionandcapacitanceofcompositefilmsofconductingpolymersandcarbonnanotubes显示文摘 | PengC JinJ ChenGZ | 2007 | ElectrochimicaActa2007，53，2： | 1 |
| 8 | PhylogenyinstructurealterationsofPoaceaecpDNA(禾本科植物叶绿体基因组结构的系统进化研究)[J]显示文摘 | TANGP(唐萍) RUANQY(阮秋燕) PENGC(彭程) | | 国农学通报0，，： | 1 |
| 9 | Effectofprophylactichepato-protectedtreatmentonanti-tuberculosischemotherapy[J]显示文摘 | HANGZF YINJ PENGC etal | 2012 | 临床肺科杂志2012，15，9： | 1 |
| 10 | Use of serum cystatin C to detect early decline of glomerular filtration rate in type 2 diabetes 显示文摘 | YangYS PengC H LiuC K | 2007 | Intern Med2007，46，12： | 1 |
| 11 | Expres- sion, subcellular localization and phytohormone stimula- tion of a functional sucrose transporter (MdSUT1) in apple fruit 显示文摘 | PENGC C XU Y H XIA R C ZHAO X L | 2011 | Scientia Horticulturae2011，128，3： | 1 |
| 12 | Long-range Correlations in Nucleotide Sequences显示文摘 | BULDYREV S V GOLDBERGER A L | 1992 | Nature1992，356，12： | 1 |
| 13 | Changes in for- est biomass carbon storage in China between 1949 and 1998显示文摘 | FangJ Y ChenAP PengC H etal | 2001 | Science2001，292，5525： | 1 |
| 14 | Highly Raman-enhancing substrates based on silver nanoparticle arrays with tunable sub-10 nm gaps显示文摘 | WANGHH LIUC Y WUS B LIU N W PENGC Y CHAN T H HSU C F WANG J K WANG Y L | 2006 | Advanced Materials2006，18，： | 1 |
| 15 | Inhibition of heat shock protein 90 prolongs survival of mice with BCR–ABL–T315I–induced leukemia and suppresses leukemic stem cells显示文摘 | PengC BrainJ HuY | 2007 | Blood2007，110，67： | 1 |
| 16 | Bayesianwaveletshrinkage with edge detection for SAR imagedespeckling显示文摘 | DaiM PengC ChanAK etal | 2004 | IEEE TransactionsonGeoscienceandRemoteSensing2004，42，8： | 1 |
| 17 | Sesaminextendsthemean lifespan of fruit flies显示文摘 | ZuoYY PengC LiangYT etaJ | 2013 | Biogerontology2013，113，： | 1 |
| 18 | Wnt5a as a predictor in poor clinical outcome of patients and a mediator in chemoresistance of ovarian cancer显示文摘 | PengC Zhang X Yu H | | 0，，02： | 1 |
| 19 | Delaydependentrobuststabilitycriteriaforuncertainsystemswithintervaltimevaryingdelay显示文摘 | PENGC TIAN Y C | 2008 | JournalofComputationalandAppliedMathematics2008，214，2： | 1 |
| 20 | Changes in Forest Biomass Carbon Storage in China between 1949 and 1998显示文摘 | FangJY ChenA P PengC H ZhaoS Q Ci LJ | 2001 | Science2001，292，： | 1 |
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