Isolation of Catchin and Epigallocatchin From Iraqi Rhus coriaria By Preparative High-Performance Liquid Chromatography (PHPLC)

Nabaa Mohammed Ibrahem; Enas Jawad Khadum; Shihab Hattab Mutlag

doi:10.31351/vol31iss2pp271-282

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Publication Date

Sun Dec 25 2022

Journal Name

Iraqi Journal Of Pharmaceutical Sciences ( P-issn 1683 - 3597 E-issn 2521 - 3512)

Volume

31

Issue Number

2

DOI

10.31351/vol31iss2pp271-282

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Isolation of Catchin and Epigallocatchin From Iraqi Rhus coriaria By Preparative High-Performance Liquid Chromatography (PHPLC)

Rhus coriaria

Preparative HPLC

LC-MSMS

FTIR

Nabaa Mohammed Ibrahem

Enas Jawad Khadum

Shihab Hattab Mutlag

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ABSTRACT

Two compounds were isolated from the fruit part of Rhus coriaria that grow wildly or cultivated in the north of Iraq. The compounds were separated by preparative high-Performance Liquid Chromatography and their structures were established based on detailed spectroscopic techniques like FTIR and LC-MS/MS.

Keywords: Rhus coriaria, Preparative HPLC, LC-MSMS, FTIR

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Publication Date

Sat Oct 01 2016

Journal Name

Journal Of Theoretical And Applied Information Technology

Factors affecting global virtual teams’ performance in software projects

Today the trend is to perform software development work via distributed geographical area among team

individual or even as an organization. However

due to the global market and international presence of many companies

there is a need to implement a global virtual teams. The global virtual team members are gradually engaged in globalized business environments across space

time and organizational boundaries via information and communication technologies. A global virtual team relies on communication

collaboration

and information exchange are the most important criteria in global virtual teams’ operations. The purpose of this paper is to answer two research questions. The first research question is to identify the factors affecting global virtual teams’ performance. A systematic literature review was conducted to answer the first research question. The second research question is on what the rank of the factor affecting the global virtual teams’ performance according to their level of effect on global virtual teams’ performance. Online survey was conducted within 103 developers and IT managers from eight IT companies to answer the second research question. The Statistical Package for Social Science (SPSS 22) was used to analyze the collected data. In this study

we investigated factors that affect global virtual teams’ performance

factors considered include cultural differences

language problems

time-zone differences

team size

technical problems

lack of trust

lack of sufficient training

and ICT problems. Also the findings indicated that lack of sufficient training is the highest level of effect on global virtual teams’ performance. On the other hand

Ali Yahya Gheni

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(24)

Publication Date

Wed May 01 2019

Journal Name

Iraqi Journal Of Science

Investigation of nanostructured and gas sensing of tin dioxide films prepared by oxidation of Sn

M.H.

Fuad Tariq

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Publication Date

Tue Jan 01 2008

Journal Name

J Bagh College Of Dentistry

Assessment of consistency and compressive strength of glass ionomer reinforced by different amount of hydroxyapatite

Consistency

compressive

Glass ionomer

Hydroxyapatite

Mohammed R

Raghad Abdulrazzaq

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Background: Glass ionomers have good biocompatibility and the ability to adhere to both enamel and dentin. However, they have certain demerits, mainly low tensile and compressive strengths. Therefore, this study was done to assess consistency and compressive strength of glass ionomer reinforced by different amount of hydroxyapatite. Materials and Methods: In this study hydroxyapatite materials were added to glass ionomer cement at different ratios, 10%, 15%, 20%, 25% and 30% (by weight). The standard consistency test described in America dental association (ADA) specification No. 8 was used, so that all new base materials could be conveniently mixed and the results would be of comparable value and the compressive strength test described by

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Publication Date

Sun Feb 28 2021

Journal Name

Journal Of Economics And Administrative Sciences

The effect of knowledge assimilation on strategic clarity - an exploratory study in the Iraqi Ministry of Transport - Iraqi Airways Company*

knowledge assimilation

strategic clarity

knowledge acquisition and understanding

knowledge investment

clarity of objectives

clarity of organizational structure

Riyadh Kareem

Salah Al-deen Awad

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The research aims to build an integrated frame of knowledge for the basic research topics, represented by (assimilation of knowledge, strategic clarity) and their basic variables, by examining the most important scientific propositions on these topics in administrative thought, and framing the knowledge contained in them, in a serious attempt to provide appropriate answers to questions The research dilemma, and the research was applied in the Iraqi Airways Company, whose number is (1200) employees, and the descriptive and analytical approach was adopted in conducting the research. A valid form for statistical analysis, i.e., with a retrieval rate of (92%). The two researchers used the (SPSS & AMOS) program for

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Publication Date

Sat Jun 30 2007

Journal Name

Al-kindy College Medical Journal

Trace Elements in Serum and Seminal Plasma and Their Relationship to Infertility in Iraqi Males

Trace elements

infertility

seminal plasma

Nahla M

Zina A

Basil Y

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Background: Environmental chemicals are thought to
adversely affect human reproductive function.
Objective : To estimate the concentration of cadmium(Cd)
, lead ( Pb ) and Zinc ( Zn ) in serum and seminal plasma
among infertile men .
Methods: A sample of 70 infertile men was investigated.
The relationship of trace elements concentration in serum and
seminal plasma was studied in relation to sperm density,
motility and sperm count.
Results: Except for Zinc the concentration of (Pb) and (Cd)
were generally higher in serum than in seminal plasma. The
mean concentration of (Zn) in seminal plasma was more than
25 times higher than in serum There were no statistical
significant differences observed in the

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Publication Date

Sun Sep 01 2019

Journal Name

Baghdad Science Journal

Removing of Hexavalent Chromium from Aqueous Solutions Using Dried Yogurt, and Studying Isotherm, Kinetic and Thermodynamic Parameters

Adsorption

Adsorption isotherms

Adsorption kinetics

Hexavalent chromium

Yogurt.

الامتزاز

ايزوثيرمات الامتزاز

حركية الامتزاز

الكروم السداسي

الزبادي

Sultan

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In this study, Yogurt was dried and milled, then shaked with distilled water to remove the soluble materials, then again dried and milled. Batch experiments were carried out to remove hexavalent chromium from aqueous solutions. Different parameters were optimized such as amount of adsorbent, treatment time, pH and concentration of adsorbate. The concentrations of Cr6+ in solutions are determined by UV-Visible spectrophotometer. Maximum percentage removal of Cr6+ was 82% at pH 2. Two equilibrium adsorption isotherms mechanisms are tested Langmuir and Freundlich, the results showed that the isotherm obeyed to Freundlich isotherm. Kinetic models were applied to the adsorption of Cr6+ ions on the adsorbents, ps

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(1)

Publication Date

Mon Jul 01 2019

Journal Name

Reviews In Medical Microbiology

Expression of virulence and antimicrobial resistance genes among Escherichia coli clinical isolates from blood and stool samples

mais

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Objective:

As major nosocomial pathogens, Escherichia coli isolates exhibit antibiotic resistance and also express adhesive structures and antibiotic resistance genes. The objective of this study was the comparison of virulence gene expression of extended-spectrum beta-lactamase (ESBL)-producing E. coli between blood and stool samples.

Methods:

In this study, 20 E. coli clinical isolates (10 ESBL-producers including 5 from blood, 5 from stool sample

View Publication

Publication Date

Sat Sep 30 2023

Journal Name

Journal Of The College Of Education For Women

The Prophetic Speeches (Hadith) on Sciences and Scientists: Application of the "Text from Text and D+" Theory

Discourse analysis

Prophetic Hadith

Symmetry line

Text-from-text and D Theory.

Aiman Eid Al-Rawajfeh

Basem Jawabreh

Manal Ahmad

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This study aims to apply the theory of "Text from Text and the Plus Dimension" in the analysis of the Prophetic discourse found in the section on the virtues of knowledge and scholars from Imam Sahih al-Bukhari's book. This section covers several topics, including the virtue of gathering for the sake of learning, the superiority of a scholar over a worshipper, the excellence of jurisprudence in the religion of Allah, the acquisition of knowledge through the passing away of scholars, the merit of inviting people to Allah, the continuing benefit of beneficial knowledge after a scholar's demise, the warning against seeking knowledge for purposes other than Allah, and the Prophet seeking refuge from knowledge tha

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(1)

Publication Date

Tue May 22 2012

Journal Name

Thesis

Production and characterization of methionine γ- lyase from Pseudomonas putida and its effect on cancer cell lines

Nisreen Hadi Odaa

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Production and characterization of methionine γ- lyase from Pseudomonas putida and its effect on cancer cell lines

Publication Date

Sat Jul 01 2023

Journal Name

Aip Conf. Proc. 2290

Synthesis, characterization and antimicrobial studies of mixed ligand from phthalic acid and 1,10-phenanthroline with their complexes

Taghreed

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In the present work, the phthalic acid (phthH2) and 1.10 phenonthroline (phen), and their complexes were synthesized and isolated as [M(phth)(phen)2], Mn(II), Fe(II), Co(II), Ni(II) Cu(II), Zn(II), and Cd(II) ions. These complexes were characterized by elemental analysis, melting point, conductivity, percentage metal, UV–Vis, FT-IR, and magnetic moment measurements. The molar conductance indicates that all the metal complexes in DMSO are nonelectrolytic. phthalic acid (phtha), and 1,10-Phenanthroline (phen), behaved as bidentate, coordinating to the metal ion through their two oxygen and two pyridinyl nitrogen atoms respectively, as corroborated by. Electronic spectra, FTIR, spectroscopy amusement indicated that all the metal complexes ad

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