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Jiang bao shan 한국유통학회 2007 한국유통학회 학술대회 발표논문집 Vol.- No.-
Since 90’,s Chinese logistics has been keeping high speed in logistics industry. This article is mainly about analysis of development of Chinese logistics in 2006, during “Tenth Five Years' Plan", and it also makes certain expectation of Chinese logistics' development. Based on these points, this article also makes general description on certain characteristics of Chinese logistics market. At the end of this article, it points six aspects which Korean logistics organization should pay attention to when they invest in China; those aspects are selection of investment zone; risk of policy; risk of market; risk of legislation; scale of investment and domestic operation.
Shan Jiang,Ce Cui,Weijie Wang,Erhui Ren,Hongyan Xiao,Mi Zhou,Jinzhong Tang,Cheng Cheng,Ronghui Guo 한국섬유공학회 2022 Fibers and polymers Vol.23 No.11
Multifunctional flexible conductive materials have attracted significant attention as next-generation portablewearable electronics. However, designing robust electronics fabrics with high-performance electromagnetic interference(EMI) shielding and reliable use in all-weather environments remains a challenge. Herein, a practical and optimizedmethodology was provided to achieve surface metallization of insulating fabrics for conductive devices. The Ag seeds weresuccessfully embedded on the surface of viscose nonwovens as catalytic centers, and ammonia-free silver plating was carriedout at room temperature. Subsequently, the Ag-wrapped fabric was impregnated with 1-octadecanethiol so that the surface ofthe obtained fabric showed super-hydrophobicity and water contact angle can reach 152.3 °. The Ag/viscose exhibitsultrahigh conductivity (up to 538 S/cm) and the EMI shielding effectiveness (SE) reaches as high as 94.1 dB in the range of1-18 GHz. The obtained Ag/viscose possesses outstanding waterproof, strong mechanical durability, excellent Joule heatingeffect and antibacterial, which can be potentially applied for multifunctional wearable electronics and smart clothing.
Dehydration of Methanol to Dimethyl Ether over ZSM-5 Zeolite
Jiang, Shan,Hwang, Jin-Soo,Jin, Tai-Huan,Cai, Tianxi,Cho, Wonihl,Baek, Young-Soon,Park, Sang-Eon Korean Chemical Society 2004 Bulletin of the Korean Chemical Society Vol.25 No.2
Methanol dehydration to dimethyl ether (DME) has been investigated over ZSM-5 zeolites and compared with that of ${\gamma}-Al_2O_3$. Although the catalytic activity was decreased with an increase in silica/alumina ratio, the DME selectivity increased. H-ZSM-5 and NaH-ZSM-5 zeolites were more active for conversion of methanol to DME than ${\gamma}-Al_2O_3$. $Na^+$ ion-exchanged H-ZSM-5 (NaH-ZSM-5) shows higher DME selectivity than H-ZSM-5 due to the selective removal of strong acid sites.
Performance of Continuous-wave Coherent Doppler Lidar for Wind Measurement
Shan Jiang,Dongsong Sun,Yuli Han,Fei Han,Anran Zhou,Jun Zheng 한국광학회 2019 Current Optics and Photonics Vol.3 No.5
A system for continuous-wave coherent Doppler lidar (CW lidar), made up of all-fiber structures and a coaxial transmission telescope, was set up for wind measurement in Hefei (31.84 N, 117.27 E), Anhui province of China. The lidar uses a fiber laser as a light source at a wavelength of 1.55 µm, and focuses the laser beam on a location 80 m away from the telescope. Using the CW lidar, radial wind measurement was carried out. Subsequently, the spectra of the atmospheric backscattered signal were analyzed. We tested the noise and obtained the lower limit of wind velocity as 0.721 m/s, through the Rayleigh criterion. According to the number of Doppler peaks in the radial wind spectrum, a classification retrieval algorithm (CRA) combining a Gaussian fitting algorithm and a spectral centroid algorithm is designed to estimate wind velocity. Compared to calibrated pulsed coherent wind lidar, the correlation coefficient for the wind velocity is 0.979, with a standard deviation of 0.103 m/s. The results show that CW lidar offers satisfactory performance and the potential for application in wind measurement.
Shan Jiang,Zuoxiang Zeng,Weilan Xue,Wei Zhang,Zhiyuan Zhou 한국화학공학회 2020 Korean Journal of Chemical Engineering Vol.37 No.9
This study explored the direct esterification of palmitic acid and ethanol using a deep eutectic solvent (DES) as catalyst to produce biodiesel. Three novel deep eutectic solvents (DTAC-PTSA, DTAC-2PTSA, DTAC3PTSA) were successfully prepared by mixing dodecyl trimethyl ammonium chloride (DTAC) and p-toluenesulfonic acid monohydrate (PTSA) in a molar ratio of 1: z (z=1, 2, 3). After testing, DTAC-3PTSA was found to have the best catalytic performance among the three types of DESs and was therefore selected as the catalyst for subsequent experiments. The effects of agitation speed, ethanol to palmitic acid molar ratio (), temperature and catalyst dosage were studied by investigating the change of palmitic acid conversion rate with time under different conditions, respectively. Then, the pseudo-homogeneous (PH) model was utilized to describe the kinetic behavior of this reaction between 328.15-348.15 K and it was found to work well for the experimental data obtained. Moreover, the catalytic performance of DTAC-3PTSA was detected to have no significant change in the cycle test. Therefore, DTAC-3PTSA can be considered as a substitute for traditional catalysts to produce biodiesel and the kinetic data obtained here can be used for further up-scaling study
Alginate-Coated Thiolated Chitosan Microspheres for an Oral Drug Delivery System In Vitro
Jiang, Hu Lin,Arote, Rohidas B.,Quan, Ji Shan,Yoo, Mi Kyong,Kim, You Kyoung,Kim, In Yong,Hong, Zhong Shan,Lee, Hong Gu,Jin, Xun,Choi, Yun Jaie,Cho, Chong Su Trans Tech Publications, Ltd. 2007 Key Engineering Materials Vol.342 No.-
<P>Thiolated polymers have been studied by many researchers because of the mucoadhesive properties of thiol group. Alginate is a natural and biocompatible polymer that has been widely used in drug delivery. In this study, thiolated chitosan microspheres (TCMs) were prepared by ionic gelation process with tripolyphosphate and then, the bovine growth hormone (BGH) was loaded as a model drug. Finally, the BGH-loaded TCMs (BTCMs) were coated with alginate to improve the stability in gastrointestinal (GI) track. The alginate-coated BTCMs (ABTCMs) were observed as spherical shapes. The average particle sizes of ABTCMs were 6.97±0.55 -m and the sizedistribution was shown uniformly. Release of BGH from ABTCMs was decreased by coating with alginate and increased rapidly with the change in medium pH from 1.2 to 7.4. Results indicate that the ABTCMs have a potential as a drug carrier for oral drug delivery.</P>