Muthanna Journal of Pure Science (MJPS)

Dust includes many microorganisms such as airborne bacteria. Most types of these bacteria are harmful to humans
and causing severe problems. Klebsiella pneumoniae considered as serious nosocomial pathogen that cause pneumonia,
UTIs, wound and liver abscesses. One hundred fifty samples isolated randomly from different indoor and outdoor areas
during the period November 2014- February 2015. In the indoor isolates bacterium K. pneumoniae was the commonest
pathogen (36.70%) followed by S. aureus (22.78%), S. epidermidis (12.65%), Bacillus spp. (10.12%), P. aeruginosa
(5.06%), E. cloacae (5.06%), Streptococcus spp.(2.53%), Citrobacter spp.(1.26%) and Pantoea spp.(1.26%). While S.
aureus comprises the majority of outdoor bacteria in (41.66%). Using PCR method for detection of Uge gene and followed
with direct DNA Sequencing. The multiple sequence alignment (MSA) showed highly conserved area in all studied strains.
However, some variants were observed at different positions (24, 124, 152, 163, 165, 185, 199, 200, 207, 209, 248, 279, 284,
291). Also there were changes in a functional whole areas at the studied gene such as (GGCTGG) at the positions (212-217),
(ATCCCG) at positions (226-231), (GCCC) at (233-236), (ACCG) at positions (242-245), (GATT) at (263-266), (TCAA) at
(269-272). These differences in the gene sequence may indicates special characterizations for the isolated strain.

Mineralogical, Petorographic Microfacies study has been done on (16) samples of Zahraa formation (Pliocene –
Pleistocene) of outcrop in Surrounded Sawa Lake area. The mineralogical study showed that Calcite is the main mineral within
the rock formation, whereas the upper rocks of Zahraa Formation consist silty or sandy claystone is dominant in the middle and
the upper portion, in addition to quartz, clay minerals, iron oxide and organic matter as insoluble residues. From thin sections
study, Three main microfacies have been identified which are: Charophyte shelly bioclastic wackestone, Charophyte shelly
bioclastic dolowackestone and Algal wackestone. Based on microfacies study and its fossils content, it has been possible to
determine the depositional environment of Zahraa Formation which deposits in the area of the presence of Charaphytes,
indicates fresh water environment. From the depositioal situation and the large extension in the project area, the type of fresh
water environment is ephemeral freshen water lakes.

Alumina nanoparticles was synthesized using sol-gel technique and the structural characteristics of these
nanoparticles were investigated using AFM where found the size of particles about (80- 100 nm), and it has been studying
the effect of these nanoparticles on photoluminescence (absorption and fluorescence) of Rh110 dye laser solution also
doped it with non-organic media (ORMOSIL). FTIR analysis has been recorded to the final sample to investigate the
vibrational mode of both the silica and the alumina bonds.

Cobalt, Manganese and Magnesium ferrites powders have been synthesized using chemical mixing method.
Calcination and sintering temperatures were 800oC respectively. The characteristics of spinal ferrite have been investigated by
XRD technique while the magnetic characterization samples have been done using vibrating sample magnetometer (V.S.M).
The magnetic properties such as initial magnetic permeability, quality factor, inductor factor and power loss density are studied
under variation of frequency using L.C.R meter as well. Saturation magnetization, coercive field and remanent magnetization
are determined from hysteresis loops for all prepared sample.