Search results

Different pH-values of Release Medium Influence the Drug release from PTX-PCL Microspheres Lili Ruan1, Daxin Wang 2, a,Youwei Zhang1, b,Jiongxin Zhao 1, Xiufang Zhang1 and NanliangChen3 1 College of Materials Science and Engineering, Donghua University,Shanghai, 201620,China 2Yangzhou University Medical Academy, Yangzhou, 225001, China 3Key Laboratory of Textile Science &Technology Ministry of Education, Donghua University, Shanghai, 201620, China a daxinw2002@sina.com, b zhyw@dhu.edu.cn Keywords: Different pH-values, paclitaxel, polycaprolactone, microspheres Abstract.
Microsphere is a spherical or similar particle made of appropriate polymer material as the carrier to entrap or adsorb drugs.
Fig. 1 Release curve of PTX material and PTX-PCL-MS in different pH values release medium It can be drawn from the release curve, PTX material is rapidly released in different release media, while PTX-PCL-MS is slowly released in different release media, with the release rate reaching 40%~50% in about 20 days.
It has been reported in literatures[5] that doxorubicin, epirubicin, rifampin and other drugs are prepared into microspheres with PGLA as the carrier materials, and they have good slow-release effect.
Therapeutic Effects of Thermosensitive micell of PTX on the Human Ovarian Carcinoma Transplanted Subcutaneously in Nude Mice[J], medical graduates college journal,2007,20(10): 1026-1029

Tensile Properties and Dislocation Strengthening of Commercial Pure Titanium Processed by Equal-Channel Angular Pressing at Liquid Nitrogen Temperature Xiaonong Cheng1, a, Hongxing Xu1, b, Xiaojing Xu1, c, Zenglei Zhang1, b 1School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, China axncheng@ujs.edu.cn, bhxxux@ujs.edu.cn, cxjxu67@ujs.edu.cn, bzzlei88@163.com Keywords: titanium, equal-channel angular pressing, mechanical properties, strengthening mechanisms Abstract.
Generally, these materials exhibit superior mechanical properties, such as high strength and good ductility.
This technique can economically produce bulk UFG materials that are 100 % dense, contamination free and large enough for real structural applications.
For the materials subjected to severe plastic deformation, dislocations density () can be given by Eq. 2 [11]: (2) where is the magnitude of Burgers vector and equals to 0.295 nm for Ti [12].
Zhang: Journal of Functional Materials Vol. 37 (s) (2006), p. 657(in Chinese) [10] K.M.

Study on Preparation and Properties of Fluorescent Offset Printing Ink Xu Wencai1, a，Yang Yin1，Sun Jiayue2, b 1Beijing Key Laboratory of Printing and Packaging Materials and Technology，Beijing Institute of Graphic Communication, China. 2College of Chemical and Environmental Engineering, Beijing Technology and Business University, China.
Experimental Materials and equipments.
Finally, the ink was successfully made by measuring the fluorescence material fineness size (until under 15µm) after dispersive mixing.
Fang: Polymer Materials Science and Engineering Vol. 13 (1997), p.141
Sun: Journal of Materials Science Vol. 45 (2010), p.1553

Experiments Materials and Methodology.
So using the cohesive zone model to simulate the crack initiation and crack propagation is very convenient and useful for the rate-dependent materials.
Nageswara: Materials Science and Engineering A, Vol. 385 (2004) No.1-2, p.429
Liu: Mechanics of Time-Dependent Materials, Vol. 1 (1997) No.1, p.123
Schapery: International Journal of Fracture, Vol. 11 (1975) No.1, p.141

The equiaxed coatings will have the possibility to reduce the differences between coatings and bulk materials and eliminate brittle and anisotropic characterization of traditional spray coatings.
Recently, several researchers have produced equiaxed deposits using different materials.
[3] Yang Gao, De Ming Yang, Jian Yi Gao, Characteristics of a Plasma Torch Designed for Very Low Pressure Plasma Spraying, Journal of Thermal Spray Technology, 21 (2012) 740-744
Grant, Development of microstructure in spray formed alloys, Progress in Materials Science, 42 (1997) 373-392
Grant, Spray forming, Progress in Materials Science, 39 (1995) 497-545

In the experimental research, the paper independently designed and built an annular pipe pneumatic conveying system with 90 degree bend and backward-facing step, including designing material screw feeder, material receiving hopper, pipeline, control system, data acquisition system, and etc.
Experimental rig and test material.
We used different granular materials to evaluate the influence of characteristic parameters on pressure drop.
The first granular material for the tests is gravel beads with density about 2730 kg m-3 and two average diameters of 0.4 mm and 2 mm.
[4] Taylor M K P, Whitelaw J H , Yianneskis M, Curved ducts with strong secondary motion: velocity measurements of developing laminar and turbulent flow, Journal of Fluids Engineering. 104(1982): 350- 359.

Beijing Building Materials Academy of Sciences Research, Beijing, 100041, China) aEmail: srxlike@yahoo.com.cn; bEmail: zhangjixiu06@gmail.com Keywords: α-High-Strength gypsum plaster, expansion rate, retarder Abstract.
Test materials and test methods Materials and mix proportion In this study, α high-strength gypsum powder is the product of the Beijing Building Materials Academy, citric acid, tartaric acid and sodium pyrophosphate is as the AR.
Acknowledgements This work was financially supported by the National Science and Technology Support Program（2011BAE14B05） References [1] DAIYANLIANG，ZHENGJIANHE，LISUQING，WANGHONGLIANG Study on performance parameters affecting expansion of plaster mold—Problem of gypsum expansion (一) National Building Technology Journal—《Ceramics》，2004，167（1）：22 [2] LEIMEN G.
Southeast University (Science), 2004, 34(3): 356–360.PENG Jiahui, QU Jindong, WU Li, etal.
New Building Materials,2000(8): 13–15.LI Gengying.

The raw materials were given two different type of fluid on quenching and four different type of temperature on tempering to obtain varying a phase volume which indicated directly relationship with final mechanical properties of raw material.
Callister Jr.: Materials Science and Engineering, 4th Edition, Department of Metallurgical Engineering, The University of Utah
Jones: Rocket materials - a challenge for metallurgists, J.
Van Tyne, “Correlation of yield strength and tensile strength with hardness for steels”, Journal of Materials Engineering and Performance, vol. 17(6)( December 2008), pp. 888-893
[14] Fundamentals of Modern Manufacturing: Materials, Processes, and Systems, 4th Edition, 2010, USA.

Acknowledgements Supported by Natural Science Foundation of University of Jinan (XKY1125).
Research of Environmental Sciences,1991,4 (6): 9-12
Journal of Electroanalytical Chemistry，2001，507( 1) : 96-102 [6]6Ma Y．
Journal of Environmental Engineering，2005，131( 2) : 327-331 [8]Beltran De Heredia J．
Journal ofenvironmental engineering, 2012, 7 (6):2165-2168

Mu rongping[2], Chinese academy of sciences in reference to WED and IMD international competitiveness evaluation system ,on the basis of which has constucted high technology industry international competitiveness evaluation system .
[2] mu rongping, high technology industry international competitiveness evaluation method of preliminary study [J], scientific research management, 2000.1:50-57 [3] PeiChangHong: utilization of foreign capital and industrial competitiveness, Beijing, social sciences academic press, 1998
Journal of Australian mining,,1984 (12) : 13 to 15
Journal of mining, Techonology, 1999 states (8) : 249-254
Journal of north China electric power university (social science Edition), 2006 (1) : 54-58