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Oct 15, 2018Open    AccessArticle

Thermodynamic Properties of Yttrium Based Cuprate Due to Electron-Cooper Pair Interaction Using BVT

Abel Wamalwa Mukubwa, Jared Oloo Odhiambo, John Wanjala Makokha
Since the discovery of high temperature superconductivity (HTSC), there have been varied results concerning the high pairing energy in the unconventional superconductivity. In an attempt to unearth the mechanism behind the high pairing energy, we study a model in which an excited electron interacts with a Cooper pair. The interaction was studied earlier on using second quantization which depended on a wave function. We now use Bog

Sep 30, 2018Open    AccessArticle

Prediction of the Fragmentation Pathway of Valsartan Protonated Ion

Dev Kant Shandilya, Rekha Israni, Peter Edward Joseph
Introduction: A fragmentation pathway of valsartan protonated ion proposed based on rational interpretation workflows. Method: The mass spectral data (MS, MS/MS, and MS3) of valsartan protonated ion, were attained by electrospray positive ionization with flow injection analysis; using liquid chromatography systems hyphenated with hybrid tandem mass spectrometer (Q-trap). Results: The pathway of fragm

Aug 31, 2018Open    AccessArticle

Methane Gas Emissions: Methods of Improving the Efficiency of the Biggest Landfill Gas Waste to Energy Project in the Middle East Installed in Amman, Jordan

Constantine Hadjidimoulas
In a world of increasing population and consumption, there is a pressing need to use our resources in the best possible way. This involves reducing the generation of waste, achieving high-quality recycling and efficient use of the residual waste for highly productive clean energy generation. A waste-to-energy facility may generate a range of energy outputs such as electricity, district heating, steam for industrial processes and m

May 31, 2018Open    AccessArticle

Gas Condensate Wells Simulation to Optimize Well Flow Performance Using Tubing Equations Coupled with Inflow-Performance-Relation (IPR) Curve

Ahmadreza Ejraei Bakyani, Alireza Rasti, Sajjad Qazvini, Feridun Esmaeilzadeh
Wells performance is evaluated by IPR curves that show the relationship between bottomhole pressure and inflow rate. This curve and its outcome equation can be applied for production schedule and maintenance management of well and reservoir. But, the measuring of bottomhole pressure to approach these curves needs much time and high expenses and also running special tools in wells. In these operations, the probability of catastroph

Nov 29, 2017Open    AccessArticle

Statistical, Data-Driven Approach to Forecasting Production from Liquid-Rich Shale Reservoirs

Ibukun Makinde
The oil and gas industry needs fast and simple techniques of forecasting oil and gas production. Forecasting production from unconventional, low permeability reservoirs is particularly challenging. As a contribution to the continuing efforts of finding solutions to this problem, this paper studies the use of a statistical, data-driven method of forecasting production from liquid-rich shale (LRS) reservoirs called the Principal C

Jul 25, 2017Open    AccessArticle

Adsorption of Anionic Dye Using Cationic Surfactant-Modified Kenaf Core Fibers

Intidhar Jabir Idan
Kenaf is a widely cultivated crop, particularly in the tropics. Kenaf core fiber (KCF) is a natural cellulose fiber derived from the plant and it is an important raw material for a variety of products. An attempt was made to chemically quaternized KCF (QKCF) as an adsorbent to increase adsorption affinity towards anionic reactive red-RB dye (RR). KCF was quaternized by treating with (3-chloro-2-hydroxypropyl) trimethylammonium chl

May 03, 2017Open    AccessArticle

An Absorption-Adsorption Apparatus for Gases Purification from SO2 in Power Plants

Christo Boyadjiev, Boyan Boyadjiev
Different companies propose methods and apparatuses for waste gases purification from SО2 using two-phase absorbent (CaCO3 suspension).The basic problem of the carbonate absorbents is that its chemical reaction with SO2 leads to CO2 emiss

Mar 30, 2017Open    AccessArticle

Prediction of the Fragmentation Pathway of Atorvastatin by Using High Resolution Collision Induced Dissociation (HR-MS/MS) Spectral Information

Dev Kant Shandilya, Rekha Israni, Peter Edward Joseph, Venkata Siva Satyanarayana Kantamreddi
Introduction: A possible fragmentation pathway of atorvastatin was proposed based on rational interpretation of high resolution collision induced dissociation (CID) fragmentation spectral data. Method: The mass spectral (MS and MS/MS) data of atorvastatin was obtained by using a flow injection analysis, LC coupled with high resolution mass analyzer system with Q-TOF technology. Results: The elemental composition for

Sep 09, 2016Open    AccessArticle

Biosorption of Chromium from Aqueous Solution by Gracilaria corticata (Red Algae) and Its Statistical Analysis Using Response Surface Methodology

G. Kavitha, V. Sridevi, P. Venkateswarlu, N. Chitti Babu
The present work deals with, the potential of biosorption technique for the removal of chromium from aqueous solutions using marine based material viz. Gracilaria corticata powder. The experiments are carried out in a batch operation to understand the equilibrium studies, kinetics and thermody

Jan 18, 2016Open    AccessArticle

Study on Numerical Simulation of Oil-Water Phase Non-Darcy Flow in Low-Permeability Reservoirs

Rongqiang Li, Jianzhong Wang
Based on the basic laws of non-Darcy seepage in low permeability media as well as dynamic permeability, a dynamic function of permeability is derived. On this basis, factoring in the effect of the non-linearity and the starting pressure gradient, a piecewise numerical simulation model was established for low permeability reservoirs and through discretization, a numerical model was obtained. According to the results of the simulation test, this model and method reflect well the seepage in low per...