Basrah Journal of Science

The structural stability of a double diffusive convection in a porous medium of the
Forchheimer type was studied, when the density of fluid depends on temperature and
concentration as a cubic and linear function, respectively. It has been shown that for this problem,
with thermal convection in a plane infinite layer, the resonance can occur between the internal
layers that arise. The main parameter is the internal heat source and its presence may lead to
oscillatory convection in linear instability inducing resonance. Thus, in this study, the structural
stability problem of continuous dependence on the heat source itself for a model of nonisothermal
flow in a porous medium of Forchheimer type was analyzed. Furthermore, the continuous
dependence of the solution on changes in the Forchheimer coefficients has been shown.

The main purpose of this paper, is to introduce and study the common fixed point
by using the concept of partial metric space and combine with class of b-metric space
under a contractive condition which introduce LJ-B. Ciric. Our results improve and unify
a multitude of fixed point theorems and generalize some recent results in partial b-metric
spaces.

Based on basic hypergeometric series, a new generalized -operator has been constructed and
obtained some operator identities. Also, a new polynomial is
introduced. The generating function and its extension, Mehler’s formula and its extension and the
Rogers formula for the polynomials have been achieved by using
the operator . In fact, this work can be considered as a generalization of Liu work’s by imposing
some special values of the parameters in our results. Therefore the -Rogers-Szegö polynomials
can be deduced directly.

Four sites were chosen, in Hareer region, north of Basrah governorate, South Iraq. Eighty
samples were collected from the sites, twenty samples from every site to 5m in depth. The
sampling was carried out for each 0.25 m along the trench. Faunal assemblages show three
biofacies: first, a marsh to fluvial environment B1 was found at depth from the ground surface to
about 1-1.5m. Second, a shallow/ upper estuarine, brackish marsh environment B2 was found at
depth 1.5m to about 3-3.5m. Third, a lower estuarine to marine environment B3 was found at
depth 3.5- 5m. Probably, estuarine fauna; Elphidum excavatum, Ammonia beccarii, and
Cyprideis torosa existence at most sites proposes a marine covering. Out of 80 samples, eight
specimens were analyzed by the C14 method to delineate the sediments ages. These ages were
1167-1276 cal CE; 69-245 cal CE; -1385 to -1146 cal CE; and -4717 to -4546 cal CE and -6638 to - 6456 cal CE which fall in Seljuk, Abbasid and Mamluk/Mongol; Parthian and
Sassanian; Kassite as estuarine, and brackish marsh to fluvial and fresh marsh environments; and
Ubaid 2, Ubaid0-Neolithic, as lower estuarine to marine environment, respectively.

Iron deficiency (ID) is the most common causes of anemia throughout the world. Iron is one of a
variety of nutritional factors has been associated in the pathogenesis of oral candidiasis, it is the most
common fungal infection, caused by an overgrowth of opportunistic fungus Candida spp. in
immunodeficiency hosts. Two patients with oral manifestation such as angular cheilitis and atrophic
glossitis were reported to have iron deficiency anemia(IDA). The first case was a 17 years old female,
high school student with symptoms of oral thrush and moderate IDA (Hb 8.0 - 9.9 g/dl) suffers from
Angular cheilitis and atrophic glossitis with pseudomembranous candidiasis. The second case was 62
years old female, housewife, suffers from life-threatening IDA (Hb < 6.5 g/dl) had symptoms of oral
thrush with angular cheilitis and chronic mucocutaneous candidiasis. Morphological and biochemical
identification of the yeast isolated from the two cases tongue revealed that it belongs to C. albicans. At
conclusion, IDA patients are more susceptible to oral candidiasis and C. albicans is the most frequent
species in the oral cavity of IDA patients as the causative agent of candidiasis.

Promyelocytic leukemia protein isoform II (PML-II) mRNA expression was interfered
with anti-PML-II- specific mRNA to downregulate its expression to analyse the infection
outcome in presence or absence of PML-II. PML-II transient knockdown gave an effective
down regulation at the protein level then the transfected cells were challenged with
adenovirus wild type (wt300) or Orf3- deleted mutant (InOrf3) to analyze the outcome of
both viruses infection. DNA binding protein (DBP) expression increased in both types of
infection with the removal of PML-II with more or less level of infection in both types of
infection. Adenovirus yield was higher with the removal of PML-II in both types of wt or
InOrf3 infection. Interferon treatment reduced the expression of early protein ( E1b55k) in
InOrf3 infection but not in wt infection when PML-II was absent. To conclude, E4Orf3
removal reduces the virus yield at later time points of infection through effect on E1b55k
in an interferon induced environment.

In this paper, a physical model is introduced for studying the Spin polarized electron
current in the presence of Rashba spin-orbit effect (RSO) through a serially (one
level) coupled double quantum dots made of different semiconductor material that
give different Zeeman splitting for the two dots under the influence of an external
magnetic field.
The transport properties and the factors effecting it such as the energies (
for the
two dots, Rashba spin-orbit interaction energy, tunneling energy, the tunneling spin
polarized current and polarization are all calculated as a function of the detuning
energy (????). Finally, we explain and give some analyzation to the effect of Rashba
spin-orbit interaction in a double quantum dots system.

Dental restorative material is considered important material used in teeth
restoration which considers an important branch in dental medicine. Composite effected
with many circumstances inside the oral environment such as PH of oral environment and
eating hot or cold drink and the kind of food [1,2]. However, photic dental composite
consisted of three part which is resin polymer and filler which form about 70% of
composite content and the coupling agent between the filler and polymer [3]. There are
many kinds of filler such as glass filler which considered famous filler used in dental
restorative material. Many research tried to develop composite which was focused on
(filler) and tried to change filler kind or filler particle size or filler volume or change
coupling agent between the filler and polymer [4-10]. There are many types of filler such
as chemical filler like glass filler [10], or biomaterial filler like oyster filler which was
used in many of research [11,12].
Oyster shells are one of the most common forms in the production "natural
source" of Ca supplements, because mainly comprise from about 95% calcium
carbonates, followed by material copper, nickel, cobalt, and iron oxide [13,14],
furthermore the least expensive [6,15]. The key feature of Calcium Carbonate is porous
particles this feature leading to increasing the surface area which allows for increased free
surface areas of the inter-pore polymer confinements. This allows improving physical and
to some extent chemical surface properties. Furthermore, because of their advantageous
and potential properties and good biocompatibility were entered in many medical uses,
such as tissue engineering, as scaffolds, bone-tissue, and dental transplants [16,17].
Calcium Carbonate tends to be crystalline and mutual transformations between CaCO3

Twelve stations were selected from Palinurus shoal area and one sample from each station where
dredged. The heavy and light minerals of a sandy fraction in size 0.125mm were separated by
Bromoform liquid and identified. After the petrographic study of twenty-four thin sections under the
polarized microscope, mineral identification showed different types, dominated by opaque as 41.8%
with some transparent minerals, which indicate multiple source rocks as sedimentary, igneous, and
metamorphic rocks. The main components of the studied sand fraction are opaque minerals followed
by transparent minerals as pyroxene, hornblende, zircon, tourmaline, and rutile. This assemblage
discerns that the sand deposits are of a moderate type. The triangular clarifies that the values are
located near the stable medium range, the Palinurus Shoal region has moderate stability of the
mineral deposits and this confirms the increase in the percentage of opaque minerals percentage,
which could be attributed to the drop in sea level during the sedimentation period.

The main object of this paper is to find the Brauer Trees of the symmetric group 21
S modulo 13  P
Modulo 13  P which can give the irreducible modular spin characters of 21
S
Key words: Modular representations and characters, Brauer trees, decomposition matrix for the spin
characters

Selenium (Se) is one of the vital nutritional components with main biological roles. It acts as a
prosthetic group in many enzymes like glutathione peroxidase enzyme and thioredoxin
reductase enzyme. The aim of the present study to investigate the histological effects of 4̄,4̄
(4,5,6,7-Tetrahydro- [1,2,3-] Selenadiazolo [4,5 E] Pyridine-4,6-Diyl) Bis(Benzene-1,3-Diol)(T)
compare with Dipyrone (Di) on kidney, liver and stomach. Healthy female rats divided into four
groups received 50mg/kg BW of T (T group), Di (Di group), both T and Di (T&Di) dissolved in 2 ml
of distilled water(DW), the forth group control received 2 mL of (DW) for 30 days. The samples
of liver, kidney and stomach were fixed in 10%formalin, and the histological sections and
staining were prepared in the pharmacy college central lab for histopathological examination.
The results indicated that Di group showed disarrangement of hepatic architecture and
sinusoids narrowed of the liver. Section of the kidneys reveal shrinkage in glomerular content
and misshaped of cuboidal lining epithelial. Stomach sections showed destruction of gastric pits
and increased number of fundic glands. T group liver sections incomplete disappearance of
hepatocyte radiation. Renal Section of T treated group rat’s disappearance of Bowman’s
capsule; stomach Sections showed complete disappearance of epithelial cells of the gastric pit.
T&Di group sections exhibit disappearance of hepatocytes normal radiation architecture
phenomena, also there is some hemorrhages. Renal histological sections showed absences of
walls of cuboidal lining epithelium with enlarged nuclei. It can be concluded that T compound
has low destructive effects on the test organs compare with Di and control group.
Administrations of both treatments have no benefit effects.