Univesity of Thi-Qar Journal

This study describes preparation of three metal carboxylate
complexes, holmium stearate,Terbium stearate and Dysprosium
stearate,which are used as thermal stabilizers for pvc.These complexes are
identified by their infrared spectra, elemental analysis and by DSC
technique.
It is found that these complexes have some indication for same
transition of polymers have liquied crystal properities.
Uv-Visible spectra are used to study the thermal unstabilized pvc and
stabilized pvc degradation of reprecipitated from THF by methanol. This
was done by the investigation of the absorption of the polymers resulted from
the losing of HCL from the polymers chain at 275 and 385 nm, which were
corresponded to three and seven conjugated double bonds respectively.
Mechanisms for thermal stabilization process of prepared complexes
have been suggested, these stabilizers reduce the autocatalysis for hydrogen
chloride or formation of esteric bonds on polymer chain or formation of
coordination complexes.

Concentration and distribution of Total Petroleum hydrocarbons (TPHs)
were estimated in water, surface sediment and two emerged aquatic plants
(Phragmites australis) and (Typha domengensis) .They were collected from
three selected stations in the river Euphrates near A1-Nassiriya ,a city south
of Iraq, during the period between February and July/2006. Concentration of
TPHs in the sample solutions, prepared after extraction, were analyzed by
using spectrofluorometer (shimadzu RF. 540). Total organic carbon (TOC)
content in sediment was measured , air and water temperature, dissolved
oxygen (DO), Biochemical oxygen demand (BOD5) and suspended particulate
matter(SPM) were estimated. Monthly variations were recorded in air and
water temperature. The lowest value of DO (4.8 mg/l) in July was recorded in
station 3, and the highest (8.9 mg/l) in February was recorded in station 1. The
highest value of BOD5 (8.51 mg/l) in July and the lowest (2.33 mg/l) in May
were recorded in stations 3 and 1 respectively. The high concentration of TPHs
found in sediment was (23.4 l g/g) dry weight in April, while it were (10.43
g/l) in February and (6.30 g/g) in April in (dissolved and particulate) phases
of water samples respectively. Different concentrations of TPHs were found
in the aquatic plant samples. P. australis recorded higher concentration
of TPHs than T. domingensis in (shoot and root parts), whereas TPHs
concentration in root part were higher than its concentration in shoot
part in both plants. Posative correlation was recorded between TPHs
concentration and fat content in ( root and shoot) parts for both plants.
Furthermore, posative correlations were observed between TPHs
concentration and TOC content in sediment for all study stations. In
conclusion both plants are capable of accumulation TPHs and we can
use them as bioindicators for study and monitoring the pollution by this
type of pollutants in aquatic environment.

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Eighty – two children with Streptococcus pneumoniae diseases
were admitted to central hospital of children in Baghdad city ,
during the period from January 2004 to December 2004 . The age
of children ranged from one day to ten years . The types of
diseases are follows : pneumonia 24 (29.2 %) , urinary tract
infection 21 (25.6 %) bacteremia 18 (21.9%) , Otitis media 15
(18.2%) and meningitis 4 (4.8 %) . Of the 82 cases studied ( 32.9
%) were less than 2 years . From the subjets 48 (58.5 %) were
male patients and 34 (41.4%) female patients , most of cases were
occurred in winter months . The most effective antibiotics are
ciprofloxacin and cefotaxime while Ampicillin and penicillin were
less efficaious against Streptococcus pneumoniae . The major of
isolates were have capsule and hemolytic activity (95.1 %)
(96.3 %) respectively while only 40 (48.7%) from isolates were βlactamase producing .

The product of m-paracompact and m-strongly paracompact are briefly
discussed.

In this paper, the nature and the magnitude of effect, which
caused by atmospheric constituents (Dry air molecular, water
vapor, aerosols) on the transmission of solar radiation for Iraq
Marshes (Al-Nasiryah Marshes (31°05 latitude and 47°17
longitude)), were studied. Its found that more less solar
radiation transmittance occurred by aerosols particles, where its
reduces to less than 50% at high zenith angles ( < 60º ).
Moreover, the study included the effect of each, the
perceptible water vapor and visibility on the intensity of direct
radiation as a function to zenith angle in Al-Nasiryah Marshes.
Its found that each of two factors have a clear effect on the
direct radiation intensity, but visibility considered as most
effected factor on the direct radiation intensity.