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7篇 您的检索式:作者名="ZHENG Longhui"
    题名 作者 年代 出处 被引量
1Morphological, crystalline, thermal and physicochemical properties of cellulose nanocrystals obtained from sweet potato residue显示文摘Hongjia Lu Yu Gui Longhui Zheng Xiong Liu 2013Food Research International2013,,1:1
2Hollow glass microsphere production for laser direct-driven fusion targets on Shen Guang II显示文摘Qiu Longhui Fu Yibei Tang Yongjian Wei Yun Zheng Yongming Shi Tao Yao Shujiu 2002Science in China Series A: Mathematics2002,,3:1
3Morphological, crystalline, thermal and physicochemical properties of cellulose nanocrystals obtained from sweet potato residue显示文摘LU Hongjia GUI Yu ZHENG Longhui 2013Food Research International2013,50,1:1
4Hollow glass microsphere production for laser direct-driven fusion targets on Shen Guang II显示文摘Qiu Longhui Fu Yibei Tang Yongjian Wei Yun Zheng Yongming Shi Tao Yao Shujiu 2002Science in China Series A: Mathematics2002,,3:1
5Unhatched and Hatched Eggshells of the Chinese Cobra Naja atra显示文摘Changes in structure and composition of the eggshell resulting from embryonic mobilization of minerals from the eggshell are found in all oviparous reptiles studied thus far. In this study, we measured samples of unhatched and hatched eggshells of the Chinese cobra Naja atra to determine the percentage of ash and the phase composition of calcium carbonate. The mean percentage of ash was significantly higher in unhatched eggshells(24.6%) than in hatched eggshells(22.3%). The dominant phase in unhatched eggshells was the calcite form of calcium carbonate. In addition to the peaks of calcite, a few small peaks were found to be caused by the aragonite and vaterite phases of calcium carbonate, implying that there are small amounts of aragonite and vaterite in the eggshell. The concentration of the various phases calculated from the intensity of the X-ray diffraction spectra allowed the estimation that percentages of calcite, aragonite and vaterite were about 92%, 4% and 4%, respectively. Hatched eggshells produced similar spectral characteristics as unhatched eggshells, with one exception. The dominant phase composition in the hatched eggshell was also calcite, but the amount of the aragonite phase had a marked increase. Our study adds evidence that embryonic mobilization of minerals from the eggshell may result in changes in structure of the eggshell.Zheng WANG Longhui LIN Xiang JI 2014Asian Herpetological Research2014,5,4:1
6Hollow glass microsphere production for laser direct-driven fusion targets on Shen Guang II显示文摘Qiu Longhui Fu Yibei Tang Yongjian Wei Yun Zheng Yongming Shi Tao Yao Shujiu 2002Science in China Series A: Mathematics2002,,3:1
7Fabrication and origin of asymmetric polyvinylidene fluoride-carbon nanotube/ cyanate ester materials with high dielectric constant and low dielectric loss through building double-layered structure显示文摘High dielectric loss has been the biggest sticky problem for high-k conductor/polymer composites.Herein,a new asymmetric material consisting of one layer ofβ-phase poly(vinylidene fluoride)(PVDF)and another layer of carboxylated carbon nanotube(eCNT)/cyanate ester(CE)composite was fabricated,coded as PVDFx–eCNTq/CE,where x is the thickness of PVDF layer ranging from 3 to 70μm,q is the loading of eCNTs(f),taking values of 1.2 and 1.7 wt%.The influences of f and x values on dielectric properties and breakdown strengths of PVDF–eCNT/CE materials were systematically studied.When f is smaller than the percolation threshold(fc)of eCNT/CE(fc=1.6 wt%),the corresponding PVDF–eCNT1.2/CE materials have similar conductive and dielectric properties as eCNT1.2/CE composite.When f>fc,all PVDF–eCNT1.7/CE materials have much lower dielectric loss than eCNT1.7/CE,while with suitable thickness of PVDF layer(<70μm),PVDF–eCNT/CE materials have significantly improved dielectric constants and breakdown strengths.For the PVDF–eCNT1.7/CE material of which the thickness of PVDF layer is 5μm,its dielectric constant at 1 Hz is 1699,about ten times of that of eCNT1.7/CE,while the dielectric loss is only 2.31×10−2 times of that of the latter.The origin behind was intensively studied in terms of space charge distribution.Longhui Zheng Li Yuan Qingbao Guan Aijuan Gu Guozheng Liang 2017High Voltage2017,2,1:0
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