Details

Publication Date

Wed Feb 22 2023

Journal Name

Iraqi Journal Of Science

Volume

56

Issue Number

4A

Choose Citation Style

Statistics

View publication

5

Abstract Views

98

Galley Views

16

Statistics

Isolation and Identification the Cyanobacterium: Scytonema hofmanni var. calcicolum as New Record in Iraqi Drinking Water.

New record

Scytonema hofmanni var. calcicolum

Iraqi freshwater

Ibrahim

...Show More Authors

The aim of this study was to isolate and identify the cyanobacterium Scytonema hofmanni Var. calcicolum from the domestic drinking tanks as a new record in Iraqi drinking water. Scytonema hofmanni var. calcicolum, a filamentous freshwater cyanobacterium (blue-green alga). This alga was isolated from the walls of the domestic plastic water tanks in Al- karkh/ Baghdad city on July 2014. The sampling was performed by collecting three samples from this tanks, the three examined samples microscopically revealed the dominance of this cyanobacterium as unialgal in the studied samples. The results showed this alga has the ability to tolerate high temperature up to 42 Cº and very low light intensity inside the tanks which up to 10 μE/m²/s.

View Publication Preview PDF

Quick Preview PDF

Publication Date

Tue Mar 20 2018

Journal Name

Offshore Technology Conference Asia

Prediction of Hydrate Phase Equilibrium Conditions for Different Gas Mixtures

new correlation

hydrate equilibrium temperature

correlation

prediction

gas mixture

hammerschmidt

phase equilibria

artificial intelligence

upstream oil & gas

hydrate

Dhifaf Jaafar

Stefan

Maxim

Ahmed

...Show More Authors

AbstractGas hydrate formation poses a significant threat to the production, processing, and transportation of natural gas. Accurate predictions of gas hydrate equilibrium conditions are essential for designing the gas production systems at safe operating conditions and mitigating the problems caused by hydrates formation. A new hydrate correlation for predicting gas hydrate equilibrium conditions was obtained for different gas mixtures containing methane, nitrogen and carbon dioxide. The new correlation is proposed for a pressure range of 1.7-330 MPa, a temperature range of 273-320 K, and for gas mixtures with specific gravity range of 0.553 to 1. The nonlinear regression technique was applie ... Show More

(6)

(1)

Publication Date

Thu Dec 30 2021

Journal Name

Iraqi Journal Of Science

Structural Reservoir Characterization of Akkas Gas Field, Western Iraq: Implications for Hydrocarbon Recovery

Directional drilling

Akkas gas field

uplift

micro fractures

Iraqi Western Desert

Abdulkhaleq A.

...Show More Authors

Akkas Field is a structural trap with a sandstone reservoir that contains proven gas condensate. The field is a faulted anticline that consists of the Ordovician Khabour Formation. The objective of this research is to use structural reservoir characterization for hydrocarbon recovery. The stratigraphic sequence of the Silurian and older strata was subjected to an uplift that developed a gentle NW-SE trending anticline. The uplifting and folding events developed micro-fractures represented by tension cracks. These microfractures, whether they are outer arc or release fractures, are parallel to the hinge line of the anticline and perpendicular to the bedding planes. The brittle sandstone laye

View Publication Preview PDF

(4)

(1)

Publication Date

Sun Mar 29 2020

Journal Name

Iraqi Journal Of Chemical And Petroleum Engineering

Dissolving Precipitated Asphaltenes Inside Oil Reservoirs Using Local Solvents

asphaltene deposition

Iraqi local solvents

permeability damage

oil reservoirs

reformates heavy naphtha.

Laith Warid

Faleh H. M.

Adel Sherif

...Show More Authors

There are several oil reservoirs that had severe from a sudden or gradual decline in their production due to asphaltene precipitation inside these reservoirs. Asphaltene deposition inside oil reservoirs causes damage for permeability and skin factor, wettability alteration of a reservoir, greater drawdown pressure. These adverse changing lead to flow rate reduction, so the economic profit will drop. The aim of this study is using local solvents: reformate, heavy-naphtha and binary of them for dissolving precipitated asphaltene inside the oil reservoir. Three samples of the sand pack had been prepared and mixed with a certain amount of asphaltene. Permeability of these samples calculated before and after mixed with asphaltenes. Then, the

View Publication Preview PDF

Publication Date

Mon Sep 20 2021

Journal Name

Key Engineering Materials

Effect of Partial Substitution of Sr by Ba on the Structural Properties of Tl0.8Ni0.2Sr2-xBrxCa2Cu3O9-δ System

Mohammed Abdul Nebi

Rihab Nassr

Naba

Kareem Ali

Auday H.

...Show More Authors

In this manuscript, the effect of substituting strontium with barium on the structural properties of Tl_0.8Ni_0.2Sr_2-xBr_xCa₂Cu₃O_9-δcompound with x= 0, 0.2, 0.4, have been studied. Samples were prepared using solid state reaction technique, suitable oxides alternatives of Pb₂O₃, CaO, BaO and CuO with 99.99% purity as raw materials and then mixed. They were prepared in the form of discs with a diameter of 1.5 cm and a thickness of (0.2-0.3) cm under pressures 7 tons / cm², and the samples were sintered at a constant temperature o

View Publication

(3)

Publication Date

Sat Dec 01 2012

Journal Name

Advances In Bioresearch

Cytotoxicity of Miltefosine against Leishmania majorPromastigotes

Leishmaniasis has poor vaccination trials and the available drugs have side effects on patients. Therefore

development ofnew chemicals is important for public health. Miltefosine is the first drug used for oral treatment of visceral leishmaniasis.Previous studies approved that miltefosine is an effective treatment against visceral leishmaniasis

the visceral form ofLeishmania

and also on L. major

the cutaneous form of Leishmania. Here

we investigated the in vitro cytotoxicity ofmiltefosine on the procyclic promastigotes forms of L. major. Different concentrations of miltefosine were investigatedagainst the flagellated form of L. major

and results showed that miltefosine has inhibited the in vitro proliferation of theparasite

approving the cytotoxic effect of the compound on Leishmania

EC50 was determined after 24 hours exposure forthe drug and it was 1.54 μM. Our findings indicate that miltefosine has a cytotoxic effect on the insect stage of the old worldL. major and can be a new anti-Leishmanial drug

Hayder

...Show More Authors

View Publication Preview PDF

1 2 3 4 ... 2881 2882 2883 2884