Determination of solid-liquid binary phase equilibrium of Urea-mono ammonium phosphate (MAP)

2019 ◽  
Author(s):  
Ferlyn Fachlevie ◽  
Muslikhin Hidayat ◽  
Wahyudi Budi Sediawan
Keyword(s):  
Phase Equilibrium ◽  
Ammonium Phosphate ◽  
Binary Phase ◽  
Solid Liquid

Determination of Phase Equilibrium (Solid−Liquid−Gas) in Poly-(ε-caprolactone)−Carbon Dioxide Systems

2010 ◽  
Vol 55 (8) ◽  
pp. 2781-2785 ◽  
Author(s):  
Esther de Paz ◽  
Ángel Martín ◽  
Soraya Rodríguez-Rojo ◽  
Javier Herreras ◽  
María José Cocero
Keyword(s):  
Carbon Dioxide ◽  
Phase Equilibrium ◽  
Solid Liquid

Determination of Solid–Liquid Phase Equilibrium of Benzoic Acid in Mono, Binary, and Ternary Systems and Their Correlation

2020 ◽  
Author(s):  
Kadakanchi Sandeepa ◽  
Tulasi S.V.R. Neeharika ◽  
Ravi Kumar K ◽  
Bankupalli Satyavathi ◽  
Prathap Kumar Thella
Keyword(s):  
Phase Equilibrium ◽  
Liquid Phase ◽  
Benzoic Acid ◽  
Ternary Systems ◽  
Solid Liquid ◽  
Binary And Ternary Systems

Multi-walled Carbon Nanotubes Reinforced into Hollow Fiber by Chitosan Sol-gel for Solid/Liquid Phase Microextraction of NSAIDs from Urine Prior to HPLC-DAD Analysis

2019 ◽  
Vol 20 (5) ◽  
pp. 390-400 ◽  
Author(s):  
Nabil N. AL-Hashimi ◽  
Amjad H. El-Sheikh ◽  
Rania F. Qawariq ◽  
Majed H. Shtaiwi ◽  
Rowan AlEjielat
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Phase ◽  
Hollow Fiber ◽  
Sol Gel ◽  
Liquid Phase Microextraction ◽  
Extraction Device ◽  
Multi Walled Carbon Nanotubes ◽  
Solid Liquid ◽  
Walled Carbon Nanotubes

Background: The efficient analytical method for the analysis of nonsteroidal antiinflammatory drugs (NSAIDs) in a biological fluid is important for determining the toxicological aspects of such long-term used therapies. Methods: In the present work, multi-walled carbon nanotubes reinforced into a hollow fiber by chitosan sol-gel assisted-solid/ liquid phase microextraction (MWCNTs-HF-CA-SPME) method followed by the high-performance liquid chromatography-diode array detection (HPLC–DAD) was developed for the determination of three NSAIDs, ketoprofen, diclofenac, and ibuprofen in human urine samples. MWCNTs with various dimensions were characterized by various analytical techniques. The extraction device was prepared by immobilizing the MWCNTs in the pores of 2.5 cm microtube via chitosan sol-gel assisted technology while the lumen of the microtube was filled with few microliters of 1-octanol with two ends sealed. The extraction device was operated by direct immersion in the sample solution. Results: The main factors influencing the extraction efficiency of the selected NSAIDs have been examined. The method showed good linearity R2 ≥ 0.997 with RSDs from 1.1 to 12.3%. The limits of detection (LODs) were 2.633, 2.035 and 2.386 µg L-1, for ketoprofen, diclofenac, and ibuprofen, respectively. The developed method demonstrated a satisfactory result for the determination of selected drugs in patient urine samples and comparable results against reference methods. Conclusion: The method is simple, sensitive and can be considered as an alternative for clinical laboratory analysis of selected drugs.

Freezing in Silicon at Large Undercooling

1989 ◽  
Vol 157 ◽  
Author(s):  
P.A. Stolk ◽  
A. Polman ◽  
W.C. Sinke
Keyword(s):  
Interface Temperature ◽  
Limiting Factor ◽  
Time Resolved ◽  
Large Undercooling ◽  
Explosive Crystallization ◽  
Crystallization Speed ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Rate Limiting

ABSTRACTPulsed laser irradiation is used to induce epitaxial explosive crystallization of amorphous silicon layers buried in a (100) oriented crystalline matrix. This process is mediated by a self-propagating liquid layer. Time-resolved determination of the crystallization speed combined with numerical calculation of the interface temperature shows that freezing in silicon saturates at 16 m/s for large undercooling (> 130 K). A comparison between data and different models for melting and freezing indicates that the crystallization behavior at large undercooling can be described correctly if the rate-limiting factor is assumed to be diffusion in liquid Si at the solid/liquid interface.

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