http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Hydrothermal Synthesis, Crystal Structure of Four Novel Complexes Based on Thiabendazole Ligand
Shui-Qiang Wei,Cui-Wu Lin,Xian-Hong Yin,Yue-Jiao Huang,Pei-Qi Luo 대한화학회 2012 Bulletin of the Korean Chemical Society Vol.33 No.9
Four novel metal–organic complexes [Cd2(IP)2(TBZ)2(H2O)2]·(H2O) (1), [Zn4(IP)4(TBZ)4]·2(H2O) (2), [Zn2(BTC)(TBZ)2(CO2H)] (3), [Co(PDC)(TBZ)] (4) (where IP = isophthalate; TBZ = thiabendazole; BTC = 1,3,5-benzenetricarboxylate; PDC = pyridine-3,4-dicarboxylate) have been prepared and characterized by IR spectrum, elemental analysis, thermogravimetric analysis, and single-crystal X-ray diffraction. X-ray structure analysis reveals that 1, 2, and 3 are one-dimensional chain polymers, while 4 is a two-dimensional network polymer. The TBZ acts as a typical chelating ligand coordinated to the metal center in all complexes. The 1D chain architecture of 1 is constructed from isophthalates and cadmium atoms. A simultaneous presence of chelating, monodentate and bidentate coordination modes of IP ligands is observed in complex 2. In complex 3, the 16-membered rings are alternately arranged forming an infinite 1D double-chain structure. The 2D skeleton of 4 is formed by cobalt ions as nodes and PDC dianions as spacers, through coordination bonds. The hydrogen bonds and π-π stacking play important roles in affecting the final structure where complexes 1 and 3 have 2D supramolecular networks, while complexes 2 and 4 have 3D supramolecular architectures.
Shui Wang,Yixin Qu,Yizhen Du,Ping Zhang,Xiaowei Cheng 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.12
We studied the direct synthesis of 5-hydroxymethylfurfural (5-HMF) from cottonseed hull biomass underacid condition in one-pot. The influence of HCl dosage, reaction temperature and time, CrCl3·6H2O amount, and cotton-seed hull loading on the yield of 5-HMF was investigated. As a result, a 5-HMF yield up to 51% was obtained using 1-butyl-3-methylimidazolium chloride ([Bmim]Cl) catalyzed with chromium (III) chloride at 130 oC for 2 h. The [Bmim]Cl/CrCl3·6H2O/HCl system was found to have high activity and selectivity for the dehydration of cellulose into 5-hydroxy-methylfurfural. This work provides a low cost, environment-friendly and energy-efficient process to directly convertraw biomass into bio-fuels and chemicals.
Shui Wang,Qun-Sheng Li,Zhao Li 한국화학공학회 2007 Korean Journal of Chemical Engineering Vol.24 No.2
using a laser technique in the temperature range from 283.15 to 323.15 K. The results were correlated with a semi-empirical equation. The experimental solubility and correlation equation in this work can be used as essential data andmodels in the purification process of 4-(3,4-dichlorophenyl)-1-tetralone.
Shui Wang,Qun-Sheng Li,Zhao Li 한국화학공학회 2008 Korean Journal of Chemical Engineering Vol.25 No.3
The solubility of 4-(3,4-dichlorophenyl)-1-tetralone in eleven alcohols (methanol, ethanol, 1-propanol, 1- butanol, 1-pentanol, 1-hexanol, 2-propanol, 2-butanol, 2-pentanol, 1,2-propanediol, 1,3-propanediol) was measured by using a laser technique with a temperature range from 283 K to 323 K, and at atmospheric pressure. For mono n-alcohols, the solubility is the lowest in methanol, increasing with the carbon chain of the alcohols. The results were correlated with a semi-empirical equation. The experimental solubility and correlation equation in this work can be used as essential data and models in the purification process of 4-(3,4-dichlorophenyl)-1-tetralone.
Laboratory Testing in Thyroid Conditions – Pitfalls and Clinical Utility
Shui-Boon Soh,Tar-Choon Aw 대한진단검사의학회 2019 Annals of Laboratory Medicine Vol.39 No.1
Thyroid disorders are common, affecting more than 10% of people in the US, and laboratory tests are integral in the management of these conditions. The repertoire of thyroid tests includes blood tests for thyroid-stimulating hormone (TSH), free thyroxine, free triiodothyronine, thyroglobulin (Tg), thyroglobulin antibodies (Tg-Ab), thyroid peroxidase antibodies (TPO-Ab), TSH receptor antibodies (TRAb), and calcitonin. TSH and free thyroid hormone tests are frequently used to assess the functional status of the thyroid. TPO-Ab and TRAb tests are used to diagnose Hashimoto’s thyroiditis and Graves’ disease, respectively. Tg and calcitonin are important tumor markers used in the management of differentiated thyroid carcinoma and medullary thyroid carcinoma (MTC), respectively. Procalcitonin may replace calcitonin as a biomarker for MTC. Apart from understanding normal thyroid physiology,
Strengthening Risk Evaluation in Existing Risk Diagnosis Method
Shui Yee Wong,Kwai Sang Chin,Dawei Tang 대한산업공학회 2010 Industrial Engineeering & Management Systems Vol.9 No.1
An existing risk diagnosing methodology (RDM) diagnoses corporate risk for product-innovation projects. However, it cannot evaluate and compare the risk levels of multiple alternatives in the product development stage. This paper proposes a modified risk diagnosis method to fill the gap of risk evaluation in selections of innovative product alternatives and the application of the method will be also illustrated by a case problem on alternative selections in electrical dimmer designs. With RDM as the foundation, a modified RDM (MRDM) is proposed to deal with the problem of selecting innovative project alternatives during the early stages of product development. The Bayesian network; a probabilistic graphical model, is adopted to support the risk pre-assessment stage in the MRDM. The MRDM is proposed by incorporating the risk pre-assessment stage into the foundation. By evaluating the engineering design risks in two electrical dimmer switches, an application of the MRDM in product innovation development is successfully exemplified. This paper strengthens the existing methodology for RDM in innovative product development projects to accommodate innovative alternatives. It is advantageous for companies to identify and measure the risks associated in product development so as to plan for appropriate risk mitigation strategies.
Urokinase Inhibitor Design Based on Pharmacophore Model Derived from Diverse Classes of Inhibitors
Shui, Liu,Bharatham, Nagakumar,Bharatham, Kavitha,Lee, Keun-Woo Korean Society for Bioinformatics and Systems Biol 2006 Bioinformatics and Biosystems Vol.1 No.2
A three-dimensional pharmacophore model was developed based on 24 currently available inhibitors, which were rationally selected from 472 compounds with diverse molecular structure and bioactivity, for generating pharmacophore of uPA (Urokinase Plasminogen Activator) inhibitors. The best hypothesis (Hypo1) comprised of five features, namely, one positive ionizable group, one hydrogen-bond acceptor group and three hydrophobic aromatic groups. The correlation coefficient, root mean square deviation and cost difference were 0.973, 0.695, and 94.291 respectively, suggesting that a highly predictive pharmacophore model was successfully obtained. The application of the model showed great success in predicting the activities of 251 known uPA inhibitors (test set) with a correlation coefficient of 0.837, and there was also none of the outcome hypotheses that had similar cost difference and RMS deviation (RMSD) with that of the initial hypothesis generated by Cat-Scramble validation test with 95% confidence level. Accordingly, our model should be reliable in identifying structurally diverse compounds with desired biological activity.