Micro encapsulation of Naproxen By Complex Coacervation and Aqueous Colloid Dispersion  Part ( 1 )

Ahmad N.Abood; Yehia I. Khalil

doi:10.31351/vol15iss2pp17-22

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Publication Date

Fri Mar 31 2017

Journal Name

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

Volume

15

Issue Number

2

DOI

10.31351/vol15iss2pp17-22

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Micro encapsulation of Naproxen By Complex Coacervation and Aqueous Colloid Dispersion Part ( 1 )

Ahmad N.Abood

Yehia I. Khalil

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Naproxen is a non steroidal anti inflammatory and antipyretic drug which has local irritation effect on the stomach, and unpleasant taste, besides bad flowability and light sensitivity .The drug was prepared as microcapsules by complex coacervation method using acacia-gelatin coating materials , and aqueous colloid polymer dispersion method ( ACPD ), using ethyl cellulose and sodium alginate coating materials . The results indicated that microcapsules prepared by 2:1 core:wall ratio is the best for both methods, with an average encapsulation efficiency (75%) and avarege yield (90%) .

Moreover the drug release was affected mainly by core : ratio ,pH enviroment and method of microencapsulation .

Key words: Naproxen,Microcapsule , Aqueaus colloid polymer dispersion

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Publication Date

Thu Jun 01 2023

Journal Name

Journal Of Engineering

On the Laser Micro Cutting: Experimentation and Mathematical Modeling based on RSM-CCD

PEEK material

laser micro-cutting process

fiber laser

Sura Sabah

Bassim Shaheen

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The laser micro-cutting process is the most widely commonly applied machining process which can be applied to practically all metallic and non-metallic materials. While this had challenges in cutting quality criteria such as geometrical precision, surface quality and numerous others. This article investigates the laser micro-cutting of PEEK composite material using nano-fiber laser, due to their significant importunity and efficiency of laser in various manufacturing processes. Design of experiential tool based on Response Surface Methodology (RSM)-Central Composite Design (CCD) used to generate the statistical model. This method was employed to analysis the influence of parameters including laser speed,

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(2)

Publication Date

Sat Dec 31 2011

Journal Name

Al-khwarizmi Engineering Journal

Simulation of Oxygen Mass Transfer in an Internal Loop Airlift Reactor with Axial Dispersion Model

Keywords: Airlift bioreactor

reactor

dissolved oxygen

modeling

axial dispersion model

hydrodynamics

mixing

internal loop

liquid circulation velocity

gas holdup.

Mohammed A.

Ameel Mohammed

Aseel

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The effect of superficial gas velocity within the range 0.01-0.164 m/s on gas holdup (overall, riser and down comer), volumetric oxygen mass transfer coefficient, liquid circulation velocity was studied in an internal loop concentric tubes airlift reactor (working volume 45 liters). It was shown that as the u_sg increases the gas holdup and also the liquid circulation velocity increase. Also it was found that increasing superficial gas velocity lead to increase the interfacial area that increases the overall oxygen mass transfer coefficient. The hydrodynamic experimental results were modeled with the available equations in the literature. The predicted data gave an acceptable accuracy with the empirical data.

The final

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Publication Date

Wed Feb 01 2023

Journal Name

Chemical Data Collections

Removal of diclofenac from aqueous solution on apricot seeds activated carbon synthesized by pyro carbonic acid microwave

Apricot seed activated carbon Microwave irradiation Response surface methodology Central composite experiments

Sami D.

Israa M.

May M.

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Pharmaceuticals have been widely remaining contaminants in wastewater, and diclofenac is the most common pharmaceutical pollutant. Therefore, the removal of diclofenac from aqueous solutions using activated carbon produced by pyrocarbonic acid and microwaves was investigated in this research. Apricot seed powder and pyrophosphoric acid (45 wt%) were selected as raw material and activator respectively, and microwave irradiation technique was used to prepare the activated carbon. The raw material was impregnated in pyrophosphoric acid at 80◦C with an impregnation ratio of 1: 3 (apricot seeds to phosphoric acid), the impregnation time was 4 h, whereas the power of the microwave was 700 watts with a radiation time of 20 min. A series o

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Publication Date

Thu Jul 04 2024

Journal Name

Journal Of Chemical Technology & Biotechnology

Adsorption of bimetal from aqueous solution on plum seed activated carbon synthesized by pyrocarbonic acid microwave method

Sami D

Israa M

Yussur D

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Abstract<sec><title>BACKGROUND

This article presents the simultaneous adsorption of bimetal Cu²⁺ and Zn²⁺ from an aqueous solution using activated carbon synthesized from a plum seed precursor by sulfuric acid and microwave activation: plum seeds chemically activated by 45% (w/w) sulfuric acid with 2:1 ratio for 4 h, then carbonized for 2 h at 700 °C and the product obtained activated in a microwave oven for 20 min at 700 W for final of activation. Plum seeds and activated carbon produced were characterized in terms of their physical and chemical composition using Brunauer–Emmett–Teller measurements, field emission scanning electr

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(2)

(1)

Publication Date

Mon Jan 01 2024

Journal Name

Anais Da Academia Brasileira De Ciências

Morphological study for Accipitrid birds (Accipitridforms, Accipitridae) in Iraq; part two

A part two of Accipitridae Family members that belong to three genera: Circus

Gyps

and Neophron were documented as morphometrics

distribution ranges

and conservation status were reviewed and comprehensively discussed. A total of 29 voucher specimens belong to six species which are conserved in the “Iraq Natural History Research Center and Museum INHM” as follow: Marsh Harrier Circus aeruginosus (Linnaeus

1758)

Hen Harrier Circus cyaneus (Linnaeus

1766)

Montagus Harrier Circus pygargus (Linnaeus

1758)

Pallid Harrier Circus macrourus (Gmelin

1770)

Egyptian vulture Neophron percnopterus (Linnaeus

1758)

and Griffon vulture Gyps fulfus (Hablitz

1783). The results revealed significant criteria about near threatened NT species IUCN and Birdlife International listed as Pallid Harrier Circus macrourus

and Endangered (EN) species as Egyptian vulture Neophron percnopterus globally decreasing population trend.

HIND D.

KHALIDA I.

AFKAR M.

SUHAD Y.

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Publication Date

Thu Jul 11 2019

Journal Name

Turkish Journal Of Pharmaceutical Sciences

<i>In Vitro</i> Macrophage Nitric Oxide and Interleukin-1 Beta Suppression by Moringa peregrina Seed

Shaymaa Fadhel

Ahmed S. K.

Hiba Sarmed

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(12)

Publication Date

Tue Apr 03 2018

Journal Name

Journal Of Entomology And Zoology Studies

Histological effects of growth hormone (GH) and Insulin-like growth factor-1 (IGF-1) on heart, liner and gizzard in chickens

Histology

chicken

GH

IGF-1

internal organs

Ali

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In the present study, histological study was carried out on adult chickens to shed light on the effects of GH and IGF-1 on the heart, liver, and gizzard. The microscopic examination had shown that GH and IGF1 promote protein synthesis in the heart tissue. The herein work referred to the presence of a considerable amount of adipose tissue among the bundles of cardiac muscles, which is related to the metabolic process. The results also revealed that GH and IGF-1 promote both protein synthesis and Mitosis in the tissues of the liver and gizzard Moreover, the above hormones stimulate apoptosis, regeneration and secretory activity in gizzard secretory glands

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Publication Date

Fri Oct 04 2013

Journal Name

International Journal Of Scientific Research

therapeutic effect of aqueous extract of vitis vinifera L. againts thyrotoxicosis induced by Levothyroxine sodium in rabbit females

Taghreed

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Publication Date

Sun Apr 30 2023

Journal Name

Al-kindy College Medical Journal

In Vitro Antimicrobial Activity of Essential Oil Derived from Callistemon viminalis Aerial Part

Plants

Bacteria

Gram-positive

Gram-negative

Fungus

Chemical composition

Anes

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Background: Essential oils extracted from plants have been widely used in antimicrobial activity, particularly the Callistemon viminalis, with a high number of essential oils extracted.

Objectives: To identify the chemical composition of essential oil derived from Callistemon viminalis and evaluates its antimicrobial activity against selected bacterial and fungal strains.

Subjects and methods: During the study, the antimicrobial activity of different selected essential oils on some bacteria (Escherichia coli, Pseudomonas aeruginosa, Salmonella enteritidis, Staphylococcus aureus, and Streptococcus pneumonia) and fungus (Candida albicans) was evalua

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(1)

Publication Date

Mon Aug 01 2011

Journal Name

Journal Of Engineering

INVESTIGATION OF TWISTED TAPE TURBULATOR FOR FIRE TUBE BOILER Part I. Heat Transfer

fire tube boiler

twisted tape

heat transfer enhancement

Karima E.

Rashid K.

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The present work presents a new experimental study of the enhancement of turbulent
convection heat transfer inside tubes for combined thermal and hydrodynamic entry length of one
popular “turbulator” (twisted tape with width slightly less than internal tube diameter) inserted for
fire tube boilers. Cylindrical combustion chamber was used to burn (1.6 to 7kg/h) fuel oil #2 to
deliver hot gases with ranges of Reynolds number (10500 to 21700), and (11400 to 24150) for both
empty and inserted tube respectively.A uniform wall temperature technique was used by keeping
approximately constant water temperature difference (25ºC) between inlet and exit cooling water in
parallel flow shell and tube heat exchanger. The test

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