Print ISSN: 1991-8941

Online ISSN: 2706-6703

Volume 1, Issue 1

Volume 1, Issue 1, Winter and Spring 2007, Page 1-142


THE EFFECT OF HIGH TEMPERATURE ON SERUM ELECTROLYTES AND TRACE ELEMENTS FOR EMPLOYEES OF FURNACE IN RAMADI GLASS FACTORY

SAFA K. Al-AMIN; MAHMOOD M.ATEA; MOHAMMED Q. AL-ANI; ABED A. THAKER

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 1-8

This study includes determination of the effect of high temperature on the serum electrolytes and trace elements in thirty workers of furnace in Ramadi glass factory (Anbar – Iraq). Thirty technicians and administrators for interior control and thirty volunteers as external control. From the results of this study we observed that: K and P decreased significantly (P< 0.01), Mg remained within the normal value,Fe increased significantly (p<0.01) and Cu decreased significantly (P < 0.01) , Zn/Cu ratio increased significantly (P < 0.01) . In conclusion, this study indicates that: the exposure to high temperature causes changes in the compositions of some constituents of blood.

STUDY OF ENTEROPATHOGENIC Escherichia coli (EPEC) ISOLATED FROM DIARRHOEAL INFANTS IN FALLUJA HOSPITAL.

IBRAHIM A. ABDUL-RAHMAN

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 1-8

This study determined the frequency of enteropathogenic Escherichia coli
(EPEC) infections in 386 infants with acute diarrohea. The age of infants ranged
from 1-36 months, The patients were admitted to the consultants clinics or hospital
in Falluja, during the period from May 2005 to February 2006. Rectal swabs and
stool specimens were cultured. Serological investigation were done by specific kit.
EPEC were found in 79 case (20.46%). The most prevalent serotypes were 0119k69
(22.78%) and 0111k58 (15.18%). High incidence of infants were observed at below
6 months of age (26.12%) and tended to be during the summer months (24.35%).
Lower incidence were observed in breast- feeding infants (11.7%) as compare with
bottel- feeding (25.62%) or mixed one(17.64%).

MULTIPLE ANTIBIOTIC RESISTANCE OF PSEUDOMONAS AERUGINOSA ISOLATED FROMAL-RAMADI CITY.

Salah S.Z Al-Jarrah

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 9-14

One hundred clinical isolates of Pseudomonas aeruginosa were isolated from
230 clinical samples taken from inpatients and out patient in general hospital in
Al-Ramadi City during 2001 and 2002. These isolates were collected from ears,
wounds and pus swabs as well as urine samples,then tested for susceptibility to
eleven antibiotics ,(Ampicillin,Carbencillin,Gentamycin,Chloramphenicol,
Cephalothin.Tetracyclin,Amoxcicillin,Streptomycin,Tobromycin,Cefataxim and
Ciprofloxacin).Most of the isolates were with high resistant to different antibiotics,
showed that 69.3% of the isolates were resistant to Tetracycline and 70.8%
resistant to Cephalpthin, whereas they showed lowest resistant against
Gentamicin, Cefataxim and Ciprofloxacin (20.6,21.8,22.4)%respectively.
The resistant percentage was differ among all isolates collected from different
samples. The isolates of wounds swabs showed the greatest resistance (78.5%)
against Tetracycline , in contrast, the lowest resistance (4.7%) was appeared with
isolates collected from pus swabs against Ciprofloxacin. The pattern of multiple
antibiotics resistance have distributed between the resistance to the two antibiotics
Tetracyclin and Cephalpthin (50%) and to all antibiotics used (2%).

PREPARATION AND CHARACTERIZATION OF CR (III), MO (V) AND W (VI) COMPLEXES USING SOME SCHIFF BASES

OMAR H. S. AL- OBAIDI; ABD ALHADY R.H. ALHITI

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 15-20

This research consists of the synthesis of two Schiff base ligands whose name are as follow: phenyl -3- methyl -5- pyrazolone thiosemicarbazone = (L1) and Phenyl -3- methyl -5- pyrazolone-4- phenyl thiosemicarbazon = (L2) The complexation of the above ligands with some transition metal ions (Cr (III), Mo(V), W(VI)) afforded metal complexes which have been characterized on the basis of their (C.H.N) elemental analysis, IR, UV-VIS, and atomic absorption. The molar conductivity measurement and melting point of prepared complexes were measured to investigate the proposed structure as an octahedral.

STUDY OF PLASMIDS ROLE IN NITROGEN FIXATION IN KL. PNEUMONIAE AND DETERMINATION THEIR BIOLOGICAL FIXATION EFFICACY .

AHMED MOHAMMED TURKEY

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 15-23

استهدفت الدراسة الحالیة عزل وتشخیص بکتیریا Kl. pneumoniae من ترب مختلفة لمحافظة الانبار اذ تم الحصول على 67 عزلة بکتیریة من بکتیریا Kl. pneumoniae ، شملت الدراسة ایضا تقییم کفاءة عزلات Kl. pneumoniae فی تثبیت النتروجین . اظهرت النتائج تباینا لهذا العزلات فی کفاءتها فی تثبیت النتروجین اذ بلغت اعلى کمیة نتروجین مثبتة (1.8 ملغم/مل) العائد للعزلة رقم 26 بینما بلغت اقل کمیة من النتروجین المثبت من قبل العزلة رقم 7 وبلغت 0.12 ملغم/مل ، وتم اختیار العزلة Kl. pneumoniae رقم 26 کاکفأ عزلة فی تثبیت النتروجین .اظهرت النتائج احتواء العزلة المذکورة على حزمة بلازمیدیة واحدة کبیرة الحجم (Mega plasmid) وعلى بلازمیدین صغیرین متماثلین . اظهرت نتائج تحیید العزلة 26 فقدان صفة تثبیت النتروجین بشکل کامل على الوسط السائل لمستعمرات Kl. pneumoniae وهذا یشیر الى ان الزرع المتکرر ساعد على تحیید البلازمیدات بوجود حامض السالسلیک . اظهرت نتائج التجربة البایولوجیة ان اعلى کمیة نتروجین کانت فی نبات الذرة الصفراء بالنسبة الى المعاملة المضاف لها التوصیة السمادیة الکاملة فی حین کانت المعاملة الملقحة بالعزلة Kl. pneumoniae اعلى فی محتواها من النتروجین من المعاملة المضاف لها ربع التوصیة السمادیة

SYNTHESIS AND PHOTOLYSIS OF SOME TRANSITION METAL COMPLEXES OF SCHIFF BASE LIGAND DERIVED FROM ETHYLENEDIAMINE AND SALICYLICALDEHYDE

MOHAMMED; A.AL-HADITHI; WALEED.F. AL-HITY; KAISS .R. IBRAHEEM

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 21-27

This study deals with the preparation of Schiff- base ligands from the reaction of salicaldehyde with ethylenediamine in the ratios 1:1 of ligand (1) and 1:2 of ligand (2). Their metal complexes with ions Fe (11), Co (11), Ni (11), and Cu (11) were also prepared. The electronic spectrum of all these complexes and the IR spectrum were studied. The ratios of dissociation of these complexes were investigated via radiation by using mercury lamp in the wavelength of 365 nm. It is noticed that these complexes dissociate slowly during the process of radiation.

PRODUCTION AND CHARACTERIZATION OF CELLULOSE ENZYME ISOLATED FROM LOCAL ISOLATE OF CYTOPHAGA BACTERIA

DHAFER. F.ABDUL KADER AL-RAWI

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 24-37

The aim of the research was to produce Cellulase via the use of two isolates
of Cytophaga bacteria. The first isolate, given the local code CR1, was taken from
AL-gazeera region soil in Ramadi grown with okra. The second, given the local
code CR2, was taken from animal waste.
Wheat barn and corn wastes (grimes) were used as only carbon source in
the culture media where the two isolates have been cultivated. However these
wastes were available in big amounts in this environment.
CR2 showed a great ability to produce Cellulase in the liquid medium
culture .The best production was at pH 7.5 and 35c temperature using wheat barn
of 1.5% cellulose concentration. When incubated in an incubator shaker of 125
R.p.m and a bacterial density of 1ml/100ml medium. After 5 days of incubation,
the enzymatic activity was 5.976 unit/ml.
The results have shown that adding calcium and magnesium ions as sulfates
of 0.5g/100ml,concentration gave higher production of the enzyme. The enzyme
activity was 6.121unit/ml and 6.212unit/ml,respectively.
The enzyme produced from the local isolate CR2 was purified following
purification procedure that included precipitation using ammonium sulfates of
90% saturation and ion exchange chromatography via replacing the column
DEAE-Sepharose.This was followed by gel filtration column of Superdex-200.It
was possible 64.11% of the enzyme with 4.109 times of purification. The results of
enzyme description showed that its molecular weight was about 32000 Dalton
using gel filtration chromatography of a Superdex-200 column, and that the
optimum pH of the enzyme activity was 6.0 .The optimum temperature of the
enzyme activity was 50c .The results indicated, also, that the enzyme gave the
highest enzymatic activity after 60 minutes of incubation at a pH6.0 and 50c
temperature.

HEMATOLOGICAL AND CYTOGENETIC STUDY OF ADDICTS TAKING ANALGESICS

SAMIR MISHRIF KHALAF; ABDULLMAJEED ABDULLAZIZ AL-RAWI

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 38-45

The study was carried out on (72)addicts of analgesics which containthe compound Codeine
such as the syrup of cough supressant . The ages of the addicts were between (18-48) years
and the period of addiction was 4 to10tewrs . Also,40 persons who do not take any drugs
were taken as samples for purpose of compartion.The study aimed at identifying the
Hematological measurements which could happen to the addicts of such drugs .As the study
aimed at studying the Cytogenetic measurements of the addiicts and mean while identifying
the side symptoms which accompany this case of addication.
Accordingiy , it has been found out that the over use of the analgesics creates a spiritual
desrease P average of the total serum biliruben (T.S.B) (1.72) mg/dl. Also,there is a spiritual increase of
the average of the E.S.R P count average of W.B.C(8986)cell/ml3 associated with a decrease of the immuntiy of the
addicts greatly.There occures spiritual differeneces P differental W.B.C represented by a decrease in the average of the existence of the
Netrophil(37.38)cell/ml3 . on the other hand,there is an increase in the rate of the
Monocytes(16.29) cell/ml3 and Lymphocyte(43.17) cell/ml3 . Although there were no
chromosomal aberrations or damage (with the exception of one case),there were formation of
the Micronuclei (MN) with various forms in most of the individuals of the samples . Also,
there was an increase in the Mitotic index factor (MI) with (2.8%)in all the cases which is
another indication of creating genetic and chromosomal aberrations which could not be
observed easily through the test of the chromosomal Karyotype.

PHOTON – POMERON COUPLING IN HADRONIC INTERACTIONS

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 39-43

Pomeron coupling to photons has been analyzed. As the pomeron assumed to
couple to hadrons through their constituent quarks and since the photon has no
constituent quarks it's coupling to the pomeron is not well known. We proposed that the
pomeron may couple to two photons in away similar to that of pseudo scalar particles
(π0, η, ή ). To justify our model we have calculated the photon-proton total cross section
in the region where a single pomeron is dominated. For completeness the contribution
from reggeons exchange at low energies has been included. A comparison with the data
shows a good agreement .

EFFECT OF STRAIN RATE ON TENSILE FRACTURE BEHAVIOUR OF VISCOELASTIC MATRIX (POLYESTER) AND FIBER REINFORCED COMPOSITES

ARZ YAHYA RZAYEG

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 44-54

Tensile testing of matrix and four different fabric polyamide composites was performed at various loading rates ranging from (8.16* 10-5 to 11.66 * 10-5 m/sec) using a servohydraulic testing apparatus. Four kinds of reinforcements woven glass fiber (WGF), random glass fiber (RGF), kevler fiber (KF) and carbon fiber (CF), and one kind of viscoelastic matrix, polyester (P). The results showed that the linear strain (،ـ 0.5) the three parameter model gives a good agreement with experimental results. The elastic modules of the viscoelastic matrix and composites tend to increase with increase of both strain rate and time. The experimental results were comparison with numerical results for simple study case has shown some agreement, which indicate the effectiveness of the ansys program used.

THE ROLE OF PLASMIDS IN RESISTANCE OF Kl. pneumoniae ANTIBIOTICS

KHALAF JASIM MOHAMMED AL-DOLAIMI

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 46-53

The bacterium Kl. pneumoniae was isolated from urine sample of patient with
urinary tract infection and diagnosed according to its cultural and microscopic characters
and biochemical reactions . Sensitivity test of the bacterium against antibiotics was
established and the results appeared that the bacterium was Sensitive to Amoxycillin ,
Gentamycin , Cephaloxin, Neomycin, Rifampicin , Chloramphenicol , Tobramycin ,
Ampicillin and carpenicillin and resistant to clindomycin ,cloxacillin , Trimethprim ,
Cefalotine , Vancomycin , Penicillin G , Lincomycin , Fusidic acid , Metronidazole and
Nalidixic acid .
Results of plasmid DNA content for the bacterium showed the presence of 8-6 kb
plasmid compared with the plasmid pBR 322 isolated from E. coli HBlol . To study the role
of plasmids in coding for antibiotics resistance , curing experiment was accomplished using
SDS .Results showed the loss of resistance of the antibiotic , Nalidixic acid after physical loss
of plasmid as ensured by gel electrophoresis.

STUDY OF SOME BLOOD CRITERIA IN PREGNANT WOMEN.

MOHAMMED QAIS AL-ANI

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 54-61

The present study aims to determine the changes in some of blood
composition for pregnant women include complete blood picture , activity of S.Alp , S.GOT ,
S.GPT , total billirubine , blood sugar , blood urea , S. creatinine for pregnant women who
used to visit in Ramadi Hospital for women and children from 1.Nov.2005 till to 1.Feb.2006.
As the results show , the level of Hb. is decreased significantly (p<0.05) , the P.C.V. is
decreased significantly (p<0.05) , the WBCs are increased non- significantly (p>0.05) , the
plts. are decreased non-significantly (p>0.05 ) , the clotting time decreased non-significantly
(p>0.05 ) , the bleeding time increased non-significantly (p>0.05 ) . The S.T.P. decreased nonsignificantly
(p>0.05 ) . The blood urea decreased significantly (p<0.05) . the S.Creatinine
decreased significantly (p<0.05). the activity of S.Alp increased significantly (p<0.05). the
activity of S.G.P.T & S.G.O.T. increased non-significantly (p>0.05 ) . the level of B. sugar
increased significantly.

HISTORICAL SEISMICITY OF THE STABLE CONTINENTAL REGIONS (SCRs) IN THE ARABIAN PLATE(PRELIMINARY STUDY).

EMAD A.M. AL-HEETY

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 55-64

Historical earthquakes catalog, which were felt in the Stable Continental Regions (SCRs) of the Arabian plate for the period (600 to 1900 A.D.), was compiled. The spatial distribution of these earthquakes appears as clusters of events in the northeastern parts, and absence of events in the other parts. This may be attributed to concentration of the population centers in the northern parts relative to other parts and / or to that the seismicity level is very low. These events have a shallow focal depths. This is a characteristic feature of the SCRs. The cumulative strain release curve exhibits two periods of high seismicity separated by low seismicity period. There is a relative quite period extends from (1194 to 1900).This quite period may appear hiatus in seismic activity or in the documentation . The b–value in magnitude relationship was low and this low value is a characteristics feature of the SCRs earthquakes.

THE IMPACT OF UNDERGRAUND WATERS AND SULPHIDE WATERS ON THE PROPERTIES OF EUPHRATES FROM SYRIAN BORDERS TO HEET IN ANBAR GOVERNORATE

F.F.ALI; R.Q.AL-KUBAISY; T.A. ZYDAN

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 62-70

The area of study starts from the entrance of Euphrates river at the Iraqi
Syrian boarder line to Heet city. It involves the influence of springs and
underground waters along the river stream on water quality. Physical and
Chemical properties of Underground water wells on Kaim city , springs of
Hijlan and sulphide springs of Heet city have been studied.
The study reveals that the water of the river not affected by underground
water wells on Kaim city. Springs of Hijlan and sulphide springs of Heet city
caused a clear differences in Physical and Chemical properties of Euphrates
river in addition to increasing concentration of some important trace elements
(Cr and Pb).

FULLY BOUNDED MODULES.

AMEEN SHAMAN AL-ANI

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 65-70

This paper contains some results a bout fully bounded modules. Various conditions where given to ensure that bounded modules are fully bounded modules.

ON THE NUMBER AND EQUIVALENT LATIN SQUARES

MAKARIM A. AL-TURKY

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 71-75

we determine the number of Latin rectangles with 11 columns and each possible number of rows, In clouding the Latin squares of order11. Also answer some questions of Alter by showing that the number of reduced Latin squares of order n is divisible by Fi where f is a particular integer close to .

THE EFFECT OF ZINE OXIDE ON SOME OFTHE QUALITIES OF CERAMIC.

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 71-74

The paper studies the preparartion of several samples of marbel ceramic with the
addition of Zinc Oxide (ZnO) as a bonding material in the percentage of 0.0%, 2%, 4%, 6%,
and Sodium Silicate that is used now in preparing marble. The study deals with the outside
look, dimensions, cracking resistance and the ability of water absorpition which are some of
the reliable qualities in the preparation of the marble ceramic. The results of this study have
shown significant differences in the treated samples with Zinc Oxide in comparison with the
untreated samples. The results shown that the samples of Zinc Oxide were identical with the
reliable qualities with a clear effect of the different percentage of the added Zinc Oxide.

MANUFACTURING OF BORCILINIA BALLS FROM LOCAL MATERIAL WITH REFERENCE TO ITS PROPERTIES AND DESIGNING AN INSTRUMENTAL FOR ITS PRODUCTION

SATTAR SALIM IBRAHEAM AL-JANABI

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 75-79

This study deals with the production of Borcilinia balls from primary local material (glass
sands, Kaolin and glaze) with the addition of imported Feldspar material (in low rate). Studies
of the chemical, physical and mechanical properties giving abroposed desigen for an
instrument for producing the balls.
The results of the study show the possibility of producing Borcilinia balls with qualities
equal to the standard imported materials.

THE CONSTRUCTION AND MAXIMAL SET OF MUTUALLY ORTHOGONAL LATIN SQUARES

MAKARIM A. AL-TURKY

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 76-81

Given aset of permutation {p1,p2, … . pk} on aset S, we say that the set of permutation is transitive on S if for every ordered pair of elements a,b € S, there exists at least on Pi for which (a) Pi=b. A permutation set for which there is exactly one Pi which maps a to b is called Sharply transitive.For example, if on the set consisting of the three elements {1,2,3} we represent the permutation which maps 1 3 ,2 2 and 3 1by (321). Then the following set of permutation is transitive.(123),(132),(213) and (321) and the last three permutation form sharply transitive set. This construction give a set of mutually orthogonal latin squares. A set S of mutually orthogonal latin squares(MOLS) is maximal if no latin square is orthogonal to each member of S.

COPOLYMERIZATION STUDY OF(N-ACRYLOY AMIDE) MONOMER WITH BUTY ACRYLATE AND DETERMINATION OF THE REACTIVITY RATIO

Tarik A. Mondyl

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 80-88

In the present study the copolymerizatioin was carried out between Isobutyl
acrylat (IBA) and butyl acrylate with different molar ratio. ( 0.2 m1/0.8 m2 -----
to 0.8 m1/0.2 m2 ) Where m1 represent (IBA) and m2 (BA) .
The Polymarization was carried out by free radical using (AIBN) as inititor at
70ºC. The reactivity ratios r1 and r2 of monomers participated in the reaction
which leads to (IBA-co-BA) system . where Calculated using three method
mayo- lewis as well as Finemane – Ross and Kelen-Tudos were used method to
measure the percentage of reactivity ratios were adopted .The percentage of
measure reactivity was found to be r1= 0.084 and r2 = 2.022
This means that the reactivity of butyle acrylat (BA) m2 is greater than
reactivity of (IBA) m1 and the copolymer is Random because the multiplication
product of r1 with r2 equal to 00169 which is less than one. r1 r2 than one.

THE EFFECT OF LASER BEAM ENERGY ON THE MECHANICAL EFFECT OF LSD WAVE OF A DEFINITE AREA

ESMAT ABDUL GAFOUR; HAMID SALEH AL JUMAILI; RAFEL ABAS HABEB

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 89-95

A mathematical model performed by computer for simulation the effect
of laser beam enhanced by ( LSD ) on the mechanical effect of the wave
explosion , which is due to interaction of laser beam with a tarried of definite
area , The blast wave theory is adopted for this purpose with the implementation
of shock relation , also the decay plasma pressure above a target surface
calculated by Sedov law. This study obtained that the value of impulse which
transferred to the target was increased with increasing laser beam value and
decreased with increasing the laser area spot. This theoretical study can be
useful for the experimental applications .

PREPRATION AND STUDING SOME PHYSICAL PROPERTIES OF ZN:CD:S:CU QUATERNARY STRUCTURE THIN FILM BY CHEMICAL SPRAY PYROLYSIS

W.BEDEAWY; M.H.SUHAIL; H.S.AL-JUMAILI

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 96-113

A quaternary structure of Zn:Cd:S:Cu thin films were prepared by
chemical spray pyrolysis method with different concentration of Zn and Cu
in the solution . The structure and the component were examined by X-ray
diffraction , which obtained that all the prepared thin films are
polycrystalline and have many phases . The optical characteristics were
measured by using a Uv-Vis. Spectrophotometer from the absorption and
reflectance spectra within the range (200-1000 nm), such as the energy gap
(Eg) , extinction coefficient (k) and the refractive index (n) . We found energy
gap changed with concentration and the components of the solution . The
value of the energy gap ranged between (1.6-2.5 eV) and the high value of the
extinction coefficient given when the quantity of Zn equal to 20ml in the
solution and this value equal to 0.55 at wavelength equal 550nm . Also the
value of refractive index takes a wide range, it's value decreased when the
quantity of Zn was increased . From the D.C. conductivity measurements at
the range (295-475K) obtained that the films have two activation energies
varied with the variation of the temperature and the concentration of the
elements in the compound . From the Hall effect measurements all films
which doped by Cu were p-type .

STUDYING THE EFFECT OF CREEP FOR SOME COMPOSITE POLYMERIC MATERIALS.

GHASSAN ADNAN NAEEM

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 114-122

Six types of composite polymeric materials were prepared. Two types of the
matrix matter were used (Low density(PE) polyethylene and (PVC) poly chloride
vinily ) . Also three types of fibers were used (Short glass fiber, woven roving glass
fiber and woven roving nylon-6) . We studied the effect of creep on the above
composites which were prepared by hot press method with the same weight fraction
(20 wt. %) the results showed that the strain ratio of composites material, which has
the same matrix matter of (PE), is less than the strain ratio of the composites material
that has the same matrix matter of (PVC),and the composites material [ PE + N-
6(W.R)] displays the best characteristics of creep.

EXPERIMENTAL STUDY OF THE NATURAL CONVECTION HEAT TRANSFER FROM HORIZONTAL,INCLINED,AND VERTICAL HOLLOW PLATE AT CONSTANT HEAT FLUX

SAAD M.J. AL-AZAWI

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 123-133

Experimental investigation was carried out to study the effect of a hollow and
inclination angles on the ability of a square flat plate squander the convective heat
transfer. An experimental set-up of an uniformly heated Aluminum flat plate of a
centerial hollow representing 0.25 of the entire surface area of the plate heated by a
constant heat flux was used basically for this purpose. Experiments were performed
for inclination angles of (0o,15o, 30o, 45o, 60o,75o, 90o)for a region of Rayleigh
number between ( 151550-1616000).This study showed that the ability of the surface
to dissipate heat was presented by the average Nusselt number as a function of
Rayleigh number depending on the existence of the hollow and the inclination angle.
The existing of the hollow increased the value of average Nusselt number up to (39%)
in the horizontal state and change sequentially with the inclination angle and it
reached the maximum value of (48%) at the angle (75o) and (22%) as a average for
all the inclination angles under test as compared with the horizontal state of the
present hollow surface and reached (59%) with the unhollow inclination surfaces.

IMPROVEMENT OF POLYESTER RESIN APPLICATION PROPERTIES BEING MIXED WITH MONOMERACRYLONILRITE

Journal of University of Anbar for Pure Science, 2007, Volume 1, Issue 1, Pages 134-142

The aim of this reseach is to improve polyester resin application properties in resistance of
weather conditions since it used for coating processes of surfaces which are faced to the sun radiation
. The samples have been produced by mixing the polymer with monomer acrylonitrile at ratios
(10%,15%,20%) to determine the effect of this monomer on to resistance of the surface upon optical
rays. This study gives to measure the absorbance a good result of resin resistance to degradation from
the mixing after exposed it to a uv.radiation with wave length254nm for300h continuously. The best
mixing ratio of monomer 15%from monomer. In other hand, processes grading the oxidations on
surface. Finally, these processes have been studied by using the spectral photometer obtained and
transmitter - reflector optical microscope before and after irradiation.