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Full-Text Articles in Analytical Chemistry

Design Optimization Of An Lpg Thermal Cracker For Multiple Objectives, Reza Nabavi, G.P Rangaiah, A Niaei, D Salari Aug 2011

Design Optimization Of An Lpg Thermal Cracker For Multiple Objectives, Reza Nabavi, G.P Rangaiah, A Niaei, D Salari

Seyed Reza nabavi

Ethylene and propylene, building blocks of the petrochemical industries, are mostly produced by steam cracking of hydrocarbons. In our recent work (Nabavi, Rangaiah, Niaei and Salari, Multiobjective Optimization of an Industrial LPG Thermal Cracker using a First Principles Model, Ind. Eng. Chem. Res. 2009, 48, 9523-9533), operation of an industrial liquefied petroleum gas (LPG) cracker was optimized for several sets of two and three objectives. In this work, optimization of an LPG cracker design is investigated for multiple objectives. The objectives considered are maximization of annual ethylene and propylene production, selectivity and run length, and minimization of severity and total …


An Examination Of The Thermodynamics Of Fusion, Vaporization, And Sublimation Of Several Parabens By Correlation Gas Chromatography, Patamaporn Umnahanant, James Chickos Jan 2011

An Examination Of The Thermodynamics Of Fusion, Vaporization, And Sublimation Of Several Parabens By Correlation Gas Chromatography, Patamaporn Umnahanant, James Chickos

James Chickos

No abstract provided.


Pyrenyl-Appended Imidazolium Receptor For Selective Fluorescence Sensing Of Oxalic Acid, Md Wasi Ahmad, Sung Hong Kim, Hong Seok Kim Dec 2010

Pyrenyl-Appended Imidazolium Receptor For Selective Fluorescence Sensing Of Oxalic Acid, Md Wasi Ahmad, Sung Hong Kim, Hong Seok Kim

Dr. Mohammad Wasi Ahmad (Md Wasi Ahmad)

A new fluorescent imidazolium-based cholestane receptor 4 bearing a pyrene moiety was synthesized. The binding ability of 4 toward various dicarboxylic acids was examined by UV–vis and fluorescence spectroscopy. Receptor 4 showed the highest binding constant for oxalic acid among all the tested dicarboxylic acids. Oxalic acid formed a complex with 4 with a 1:2 ratio in ethanol.


Anthropogenic Contamination In Sanka Stream – Determination Of The Caffeine Concentration, Agnieszka Jagoda, Witold Żukowski Dec 2010

Anthropogenic Contamination In Sanka Stream – Determination Of The Caffeine Concentration, Agnieszka Jagoda, Witold Żukowski

Witold Zukowski

Caffeine is a widely consumed pharmaceutical. Despite it's easily metabolized in the organism, caffeine is present in wastewaters generated by households. When untreated wastewaters are discharged into surface waters caffeine levels can increase. Therefore, its detection in waterways can be considered as an indicator of anthropogenic pollution. This paper presents the results of determination of caffeine in Sanka and its tributaries. The Sanka stream has its origin in the areas lying to the north-west of the city of Krakow, and an outlet in the western part of the city (Bielany). Sanka is a left-bank tributary of the Vistula. Sanka is …


Activated Carbons: Preparations And Characterizations, Mohammed Danish Dec 2010

Activated Carbons: Preparations And Characterizations, Mohammed Danish

Dr. Mohammed Danish

No abstract provided.


An Optical Nose Approach To Explosive Detection.Pdf, Tabetha Osborn, Joshua Green, William A. Burns, Scott Reeve Dec 2010

An Optical Nose Approach To Explosive Detection.Pdf, Tabetha Osborn, Joshua Green, William A. Burns, Scott Reeve

Scott Reeve

No abstract provided.