14,037 research outputs found
LIQUID-LIQUID EQUILIBRIA FOR TRITON X-100 PLUS WATER AS A FUNCTION OF PRESSURE
No full textLiquid-liquid equilibria were measured at pressures of 0.0, 50.0, 100.0, and 150.0 bar for Triton X-100 + water. The lower critical solution temperature of the Triton X-100 + water binary system is about 339 K at all pressures investigated
Liquid-liquid equilibria and partitioning of o-chlorophenol in ethylene glycol monobutyl ether plus water, diethylene glycol monohexyl ether plus water, and poly(oxyethylene(4)) lauryl ether plus water
No full textLiquid-liquid equilibria of ethylene glycol monobutyl ether (C(4)E(1)) + water and diethylene glycol monohexyl ether (C(6)E(2)) + water at atmospheric pressure were measured for temperature ranges of 322.8 K and 273.2 K to 382.5 K, respectively. The lower critical solution temperature (LCST) and upper critical solution temperature (UCST) of C(4)E(1) + water were determined to be 322.8 K and 402.8 K respectively. The LCST of C(6)E(2) + water is 273.2 K, while the corresponding UCST does not exist. The equilibrium compositions of o-chlorophenol partitioning in the top and bottom phases of the three binary C(4)E(1) + water, C(6)E(2) + water, and poly(oxyethylene(4)) lauryl ether (C(12)E(4)) + water mixtures were also measured
High-pressure phase equilibria for the carbon dioxide 2-pentanol and carbon dioxide water 2-pentanol systems
No full textHigh pressure vapor-liquid equilibria for the binary carbon dioxide-2-pentanol system are measured at 313.2 K. The phase equilibrium apparatus used in this work is of the circulation type in which the coexisting phases are recirculated, on-line sampled, and analyzed. The critical pressure and corresponding mole fraction of carbon dioxide at 313.2 K are found to be 8.67 MPa and 0.985, respectively, for this binary system. The phase equilibria for the ternary carbon dioxide-water-2-pentanol system are also measured at 313.2 K and at pressures of 2.0, 4.0, 6.0, 8.0, and 8.64 MPa. The ternary carbon dioxide-2-pentanol-water systems show three LLV phases over the range of pressure up to 8.64 MPa. The binary experimental equilibrium data are correlated with the Redlich-Kwong, Soave-Redlich-Kwong, Peng-Robinson, and Patel-Teja equations of state with two different mixing rules, the van der Waals and the Panagiotopoulos-Reid mixing rules. The binary experimental data are well correlated by using three equations of state and corresponding mixing rules. (C) 1998 Elsevier Science B.V. All rights reserved
Liquid-liquid Equilibria and Partitioning of o-Chlorophenol in Ehtyleneglycol monobutylether+Water, Diethyleneglycol monohexyl ether+Water and Polyoxyethylene 4 laurylether+Water
No full textImproved morphological stability of CoSi2 layer by in situ growth on polycrystalline silicon using reactive chemical vapor deposition
No full textCoSi2 layers have been grown in situ on undoped polycrystalline silicon by reactive chemical vapor deposition of Co(eta (5)-C5H5)(CO)(2) at 650 degreesC, and their stability has been investigated in the temperature range from 800 to 1000 degreesC. The CoSi2 layers grown by the in situ method had grains with a strong (111) orientation, while no (111) orientation appeared in the CoSi2 layers grown by the conventional two-step method where CoSi formed first and transformed to CoSi (2). The stability of the CoSi (2) layers grown by the in situ process was improved by 100 degreesC over that of the CoSi2 layers grown by the conventional two-step process. The CoSi2 layers grown in situ on a large-grained polycrystalline silicon were stable up to 950 degreesC. The effect of stability improvement by the in situ growth was more pronounced when the grains of the polycrystalline silicon had a small size. The improved stability of the CoSi2 layers grown in situ may be mainly due to the formation of a uniform CoSi2 layer with the grains of (111) orientation. (C) 2001 The Electrochemical Society.The Korea Science and Engineering Foundation ~KOSEF! financially supported this work.
Korea Institute of Science and Technology assisted in meeting the publication
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소아청소년 제2형 당뇨병의 진단과 치료
Full text linkBackground: Type 2 diabetes mellitus (T2DM) is one of the most prevalent chronic diseases, and its increasing prevalence in children and adolescents is a worldwide problem. In the past ten years, the prevalence of T2DM has increased by more than two-fold. This review focuses on the recent advances in the diagnosis and treatment of T2DM in children and adolescents. Current Concepts: Pancreatic beta-cell dysfunction and insulin resistance are the key factors contributing to the development of T2DM. The diagnosis of T2DM is based on serum glucose levels or hemoglobin A1c levels. Currently, only insulin, metformin, and liraglutide (glucagon-like peptide-1 receptor agonist) have been approved for the treatment of T2DM in children and adolescents. Discussion and Conclusion: Early diagnosis and prevention of T2DM in children and adolescents are essential. Furthermore, the treatment of T2DM in children and adolescents is limited, unlike in adults. Further research is needed to evaluate the long-term efficacy and safety of the available treatments in children and adolescents with T2DM
Central precocious puberty: is routine brain MRI screening necessary for girls?: Commentary on “Brain magnetic resonance imaging (MRI) findings in central precocious puberty patients: is routine MRI necessary for newly diagnosed patients?”
Full text linkSEGMENTAL CORRECTIVE TRAINING FOR HIDDEN MARKOV MODEL PARAMETER-ESTIMATION IN SPEECH RECOGNITION
No full textA modified corrective training method using state segment informations in the hidden Markov model is presented. The proposed algorithm is shown to result in a higher recognition rate than the conventional corrective training method and requires less computation
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