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| 1 | Preparation of nano-sized Al_2O_3-2SiO_2 powder by sol-gel plus azeotropic distillation method显示文摘Nano-sized amorphous Al 2 O 3 -2SiO 2 powder was prepared by a sol-gel method coupled with azeotropic distillation. The structure of the powder was investigated by DTS, BET, TEM, FT-IR, TG-DTA and XRD, showing that n-butanol azeotropic distillation could effectively remove water from the aluminosilicate gels and prevent the formation of hard agglomerates in the drying process. The average particle diameter of the powder was about 70 nm. The largest BET specific surface area of the powder was 669 m 2 /g. To examine the alkali-activation reactivity of the powder, alkali-activation tests were performed with the powder reacting with sodium silicate solution. The synthetic powder was found to be highly reactive. | Guangjian Zheng Xuemin Cui Weipeng Zhang Zhangfa Tong Feng Li | 2012 | Particuology2012,10,1: | 7 |
| 2 | Parallel divide and conquer bio-sequence comparison based on Smith-Waterman algorithm显示文摘Tools for pair-wise bio-sequence alignment have for long played a central role in computation biology. Several algorithms for bio-sequence alignment have been developed. The Smith-Waterman algorithm, based on dynamic programming, is considered the most fundamental alignment algorithm in bioinformatics. However the existing parallel Smith-Waterman algorithm needs large memory space, and this disadvantage limits the size of a sequence to be handled. As the data of biological sequences expand rapidly, the memory requirement of the existing parallel Smith- Waterman algorithm has become a critical problem. For solving this problem, we develop a new parallel bio-sequence alignment algorithm, using the strategy of divide and conquer, named PSW-DC algorithm. In our algorithm, first, we partition the query sequence into several subsequences and distribute them to every processor respectively, then compare each subsequence with the whole subject sequence in parallel, using the Smith-Waterman algorithm, and get an interim result, finally obtain the optimal alignment between the query sequence and subject sequence, through the special combination and extension method. Memory space required in our algorithm is reduced significantly in comparison with existing ones. We also develop a key technique of combination and extension, named the C&E method, to manipulate the interim results and obtain the final sequences alignment. We implement the new parallel bio-sequences alignment algorithm, the PSW-DC, in a cluster parallel system. | ZHANGFa QIAOXiangzhen LIUZhiyong | 2004 | Science in China(Series F)2004,47,2: | 4 |
| 3 | Alkali-activation reactivity of chemosynthetic Al_2O_3-2SiO_2 powders and their ^(27)Al and ^(29)Si magic-angle spinning nuclear magnetic resonance spectra显示文摘Pure Al_2O_3-2SiO_2 powders were prepared by sol-gel and coprecipitation methods,and their alkaliactivation reactivities were compared.The alkali-activation reactivity of the powder prepared by the sol-gel method was higher than that of the powder prepared by the coprecipitation method.The powders were investigated by ^(27)AI and ^(29)Si magic-angle spinning nuclear magnetic resonance spectroscopy(MAS NMR) to understand the relationship between their structure and alkali-activation reactivity.The ^(27)Al MAS NMR data showed that the five-coordinate AI content of the powder prepared by the sol-gel method was higher than that of the powder prepared by coprecipitation.The higher content of five-coordinate Al corresponded to higher alkali-activation reactivity.The ^(29)Si MAS NMR data showed that for the powder prepared by the sol-gel method,silicon was replaced by aluminum at secondary coordination sites of the central Si atoms during calcination.However,for the powder prepared by single-batch coprecipitation,the main change was from a low degree of polycondensation to a high degree of polycondensation. | Guangjian Zheng Xuemin Cui Dong Huang Jinying Pang Guowei Mo Shujuan Yu Zhangfa Tong | 2015 | Particuology2015,13,5: | 3 |
| 4 | Separation of organic compounds from water by pervaporation in the production of n - butyl acetate via esterification by reactive distillation 显示文摘 | Liu Kun Tong Zhangfa | 2005 | J Membr Sci2005,256,12: | 1 |
| 5 | Measurement and correlation of vapor-liquid equilibrium data for β-pinene+p-cymene+(S)-(-)-limonene at atmospheric pressure 显示文摘 | Sun Lixia Wang Kun Liao Dankui Wei Tengyou Chen Xiaopeng Tong Zhangfa | 2011 | Journal of Chemical & Engineering Data2011,56,4: | 1 |
| 6 | Measurement and correlation of(vapor + liquid) equilibrium data for {α-pinene+p-cymene+(S)-(-)-limonene} ternary system at atmospheric pressure 显示文摘 | Sun Lixia Liao Dankui Yang Zhengyu Chen Xiaopeng Tong Zhangfa | 2013 | The Journal of Chemical Thermodynamics2013,58,: | 1 |
| 7 | Removal char- acteristics of Zn( Ⅱ ) from aqueous solution by alkaline Ca-benton- ite 显示文摘 | Zhang Hanbing Tong Zhangfa Wei Tengyou | 2011 | Desalination2011,276,123: | 1 |
| 8 | Synthesis and luminescence properties of SrBPO 5 :Eu 2+ , Mn 2+ phosphor for light-emitting diodes显示文摘 | Yuwei Lan Linghong Yi Liya Zhou Zhangfa Tong Fuzhong Gong Rongfang Wang | 2010 | Physica B: Physics of Condensed Matter2010,,16: | 1 |
| 9 | Separation of organic compounds from water by pervaporation in the production of n-butyl acetate via esterification by reactive distillation 显示文摘 | Liu Kun Tong Zhangfa Liu Li etal | 2005 | J Membr Sci2005,256,12: | 1 |
| 10 | A method for designing broad-band microstrip antennas in multilayered planar structures显示文摘 | LIU Zhangfa KOOI P S LI Lewei | 1999 | IEEE Trans on Ant and Prop1999,47,9: | 1 |
| 11 | The Deposition of Particles from an Air Flow on a Single Cylindrical Fiber in a Uniform Electrical Field显示文摘 | Zhangfa Wu | 1999 | Aerosol Science and Technology1999,,1: | 1 |
| 12 | A method for designing broad-band Microstrip antennas in multi- layered planar structures显示文摘 | LIU Zhangfa KOOI Pangshyan LI Lewe | 1999 | IEEE Transactions on Antennas and Propagation1999,47,9: | 1 |
| 13 | The deposition of particles from and air flow on a single cylindrical fiber in a uniform electrical field显示文摘 | WU Zhangfa WALTERS J K THOMAS D W P | 1999 | Aerosol Science and Technology1999,30,: | 1 |
| 14 | Effects of mechanicalactivationoncold-water-solubilityand rheologieal properties of cassava starch显示文摘 | Huang Zuqiang Tong Zhangfa Li Xuanhai | 2006 | J Chem Eng of Chinese Univ2006,32,1: | 1 |
| 15 | A method for designing broad-band microstrip antennas in multilayered planar structures显示文摘 | Liu Zhangfa Kooi P S Li Lewei | 1999 | IEEE Trans on Ant and Prop1999,47,9: | 1 |
| 16 | Removal characteristics of Zn(II) from aqueous solution by alkaline Ca-bentonite显示文摘 | Hanbing Zhang Zhangfa Tong Tengyou Wei Yankui Tang | 2011 | Desalination2011,,1: | 1 |
| 17 | Measurement and correlation of solid–liquid equilibrium for abietic acid<ce:hsp sp='0.25'/>+<ce:hsp sp='0.25'/>alcohol systems at atmospheric pressure显示文摘 | Weijian Nong Xiaopeng Chen Linlin Wang Jiezhen Liang Hailing Wang Liujin Long Yanfen Huang Zhangfa Tong | 2014 | Fluid Phase Equilibria2014,,: | 1 |
| 18 | A method for designing broad-band microstrip antennas in multilayered planar structures显示文摘 | Liu Zhangfa Kooi P S Li Lewei | 1999 | IEEE Trans on Antennas and Propagation1999,47,9: | 1 |
| 19 | 显示文摘 | Zhang Hanbing Tong Zhangfa Wei Tengyou | 2011 | Desali nation2011,276,13: | 1 |
| 20 | Effects of Sustained-Release Calcium Hydroxide and Sustained-Release Hydrochloric Acid on Nutrient Di-gestion and Absorption of Rabbits显示文摘Rabbits with the body weight of(2. 0 ± 0. 5) kg were chosen,to study the effects of sustained-release calcium hydroxide and sustained-release hydrochloric acid on nutrient digestion and absorption of rabbits. The results showed that sustained-release calcium hydroxide promoted digestion and absorption of nutrients,especially calcium and crude protein. The digestibility of calcium and crude protein was increased from 89. 8% and 93. 8% to 41. 0% and 65. 2%,respectively. Sustained-release hydrochloric acid was adverse to digestion and absorption of nutrients,especially calcium and crude protein. The digestibility of calcium and crude protein were decreased from 55. 5% and 84. 9% to 28. 4% and 68. 7%,respectively. The promotion effects of sustained-release hydrochloride on digestion lasted for 3-4 d. Therefore,sustained-release calcium hydroxide promoted digestion and absorption of calcium and protein,while digestion and absorption of fat remained at a high level no matter what the condition was. Consequently,increasing the intake of fat would cause over nutrition. However,taking sustained-release hydrochloric acid would reduce nutrient digestion and absorption. | Chen Lingyu Zhuge Liuying Lin Zijun Tong Zhangfa Wei Tengyou | 2017 | Animal Husbandry and Feed Science2017,9,2: | 0 |