Journal of Education for Pure Science-University of Thi-Qar

Orthogonal Frequency Division Multiplexing (OFDM) is the best choice to achieve high datarate transmission in wireless environment. OFDM system shows many favorable property such as highspectral efficiency, robustness to channel fading and immunity to impulse interference. The maindisadvantage of OFDM is the high time-domain peak-to-average power ratio (PAPR) that limitstransmitter power efficiency. Otherwise, OFDM signal may be distorted by the nonlinear behavior ofthe high power amplifier (HPA) at the transmitter. The transmitter can reduce PAPR by distorting thedata carriers or by adding power to the free carriers. This paper analyzes the capability of DummySequence Insertion (DSI) algorithm to reduce PAPR in wireless local-area network (WLAN)/OFDMsystem. The incorporation of DSI on this system is performed by measuring the PAPR at the output ofthe IFFT (Inverse Fast Fourier Transform) after adding a 6-bit sequence at the dummy sub-channelsinputs and make a decision to transmit the data if the PAPR for this data sequence under a specifiedthreshold. Unlike most of the data distortion algorithms used for PAPR reduction methods, the lowcomplexity DSI method did not need any kind of side information. Simulation results are presentedfor a network model designed by WLAN 802.11a standard using MATLAB as a mathematicalsimulation software tool. The network model has been simulated in Additive White Gaussian Noise(AWGN) channel environment to investigate the behavior of PAPR and Bit-Error Rate (BER)performance. The simulation results show that the data distortion technique based on DSI reducesPAPR down to 4 dB compared to conventional OFDM system, and down to 2 dB compared withclipping technique for the same BER performance.

The aim of the study to investigatethe effects of mobile phones radiation on human health. Thestudy
has used a questionnairewithin contacton 158students, in college of science, Thi-Qar University,Iraqon
symptoms which students are exposed during use of mobilephones. There is increased incidence of
focusingdifficulties is about (21%), headache (20%), dizziness (13.1%)and sleep disturbances
(16.1%). Used significance at D 0.5 levels,that thereis no distinguished difference between users
whether female ormale for mobile phone is observed atillness frequencies.

The proposed system OTSS (Object and Textconversion to Sound System) is designed to describeobjects, answer questions, read texts and offer guidance about blind people environment. Thesystemhelps the visually impaired people to shopping; reading and navigating within any new environmentby recognize the environment objects and tell the blind people what their environment has.Theefficiency use of image segmentation makes the algorithm more compatible. The conversion of objectsand a text to speech synthesizer will be of great help to blind people

At the few years ago, the attention of drawing tattoo on a part of the body is more popular, especiallyin younger populations with age between 20 and 30 years old. Lawenforcement agencies tend to usethe tattoo images as a biometric for the identificationof a suspect or victim and routinely catalog tattooimages for this process. So the need to development an automatic system for the verification processand matching tattoo sketch (that obtained from the description of the eyewitness) with a stored tattooimage became most important. The attempts in this scope are limited because of the challenges inmatching sketch to image. In this work a set of features that are invariant against changes in (scale,change, mirroring, rotation and translation) are used. Moment Invariants features are extracted fromtattoo images and combined with the eigenvalues to construct feature vector with 13 values. Thesevectors are used in the process of matching between sketch tattoo and image tattoo. A total number ofimages that used here is 120 for sketch tattoos and tattoo images, and the obtained results were 85 %of images correctly matched its sketch features.

Hypercholesterolemia is usually known as the presence of high levels of cholesterol in the blood.Cholesterol is an amphipathic lipid and is naturally existed in the tissues and the plasma. In the plasma,it is carried in lipoproteins. These lipoproteins are High Density Lipoprotein-Cholesterol (HDL-C),Low Density Lipoproteins- Cholesterol (LDL-C), Very Low Density Lipoprotein- Cholesterol(VLDL), and chylomicrons. The last three groups are closely related with the hazard of coronary heartdisease (CHD), whereas (HDL-C) is not.Policosanol is a mixture produces from extraction of sugarcane wax (Saccharumofficinarum , this mixture shows cholesterol lowering and antiplatelet effects,and is being used as hypocholesterolemic drug.

Infertility is the inability of a sexually active, non-contracepting couple to achieve spontaneouspregnancy in one year. unexplained male infertility (UMI) is reserved for infertile of unknown originand accounts for 6-27% of infertile men with normal semen analyses on two or more occasions withno demonstrable physical or endocrine abnormalities and female factor infertility has been ruled out.Oxidative stress (OS) is a consequence of an imbalance between the production of reactive oxygenspecies(ROS) and the body’s antioxidant defense mechanisms. However oxidative stress(OS) is acommon pathology seen in approximately half of all infertile men. It has been shown that reactiveoxygen species (ROS) can lead to deleterious effects on a range of sperm parameters. The monitoringof MDA levels in different biological systems can be used as an important indicator of lipidperoxidation .Humans have developed a highly ,organized and complex antioxidant defense systemto protection cells and organ systems of the body against reactive oxygen species(ROS) such asglutathione is capable of reducing ROS levels and lipid peroxidation..Serum and seminal plasma MDA was significantly increased in unexplained infertile(smoker andnonsmoker)groups when compared to fertile (smoker and nonsmoker)groups. The serum andseminal plasma glutathione were significantly decreased in unexplained infertile( smoker andnonsmoker)groups when compared to fertile (smoker and nonsmoker)groups. The decrease inantioxidant levels appears to be mainly a consequence of increased oxidative stress.

The quantum efficiency QE and absorption spectrum of CdS/MgZnOheterostructuresquantum dot (QD) solar cells areestimatedfordifferent QD sizes and junction depths. Several mechanisms have beencarried outafter that to investigate QE. Among them is study the heterostructuressolar cells using one layer of the QD that found to be effective and give high QEsolar cells.Another mechanism isstudyingthe effect of changing QD size, and it is found to be efficient in tuning QE and its spectrum. Thestructural studies are carried out by using spectrum ranges within the range of 250-500 nm that is essential in solar cells applications to cover UV and visible spectrum.

Objective:JuglansregiaL. (Common Walnut), Juglandaceae, is one of important medicinal plants. Itis used to treat skin inflammations, ulcers and venous insufficiency. Its bark is used by Iraqi womento obtain a natural red-brown lip color, but there are no previous studies to use its natural pigment asa histological dye. This study aims to find new natural dye to be as alternative for synthetic dye.Materials and Methods:Paraffin sections of rat kidney, liver and spleen were prepared according theroutine histological work and used in this study.Ethanolic extractof J. regia bark was prepared andused as a counterstain after Harris haematoxylin.Results:After microscopic examination,J. regiaextract showed strong affinity for the cytoplasm. Cellnuclei were stained by haematoxylin while the cytoplasm was stained by J. regia extract. Thisaffinitycan be inferred that the plant extract has an acidic nature due to its polyphenoliccompounds.Conclusion: J. regia extract is a good natural alternative for eosin

In this paper, a new scheme for biometric data security has been proposed.Fingerprint minutiae havebeen hidden in face templatesat feature level rather than image level.Facial templates areconstructedby extracting small block of coefficients matrix resulting from applying DCT on face images. First,we propose a new encryption algorithm based on arithmetic coding to encrypt the fingerprint minutiaepoints. Then, minutiae codes are embedded in facial feature vectors using a new embedding methodbased on XOR to produce a stego-template. The influence of hiding process on the performance offace recognition system was tested. The experiments showed that the degradation was not raised insystem accuracy. So, the proposed scheme can be implementedto secure the sensitive data in amultibiometric system that combines face and fingerprint to authenticate individuals.

The large growth usage of internet rises the need to transfer and save multimedia files, thereforeappeared need for compression methods that give better compression results.This paper presents aproposedlossy image compression technique using singular value decomposition (SVD) andembedded zero tree wavelet (EZW) to compress color and gray images.Singular value decompositionbased compression reduces the psychovisual redundancies find in the image through rank reductionmethod and embedded zero tree wavelet gives higher compression ratio (CR). The experimental resultsof the proposed image compression technique are shown and also compared with other methods. Fromthe results of the comparison, the proposed image compression technique is better than other methods.

In this research, we have introduced mathematical models which in turn represents the equation ofthermal combustion. Where these formulas were formulated according to a particular pattern andconditions. Studying and is working in this field a great interest in interpreting the boundness of theprinted phenomena. In this work, we attempt to construct and present mathematical equations with anintegrative continuous research in this field and access to all the sources and previous studies and allthe works that have been provided proviously.

Polycystic ovary syndrome (PCOS) is the most familiar endocrine disorder affecting women ofchildbearing could be happen with problem and metabolic anomalies. PCOS women present withovulatory dysfunction, abnormal hormones, hyperandrogenemia, obesity, and hyperinsulinemia.Patients with PCOS may present complaining of irregular or unpredictable menstrual cycles,undesirable hair growth, acne , scalp hair loss, unexplained weight gain or overweight,and infertility.Clinical phenotyping of PCOS involves determining medical and/or biochemical androgen excess. Thebulk of evidence points to the ovary being the source of excess androgens, which appears as a resultof an abnormal regulation of steroidogenesis.It is a heterogeneous disorder which results from interaction of multiple genes and environmentalfactors.

The effect of increasing of carrier temperature in wetting layer of semiconductor optical amplifier hasbeen modeling. The occupation probability, carrier heating relaxation, spontaneous emission and freecarrier absorption have been included in our formalization. The numerical calculations showed theoccupation probability directly proportion with carrier heating time as a result of reduction of carrierdensity in wetting layer. Also, the reservoir carrier temperature is directly proportional with the fullwidth at half maximum of injected pulse and carrier heating lifetime. The numerical calculations thatare showed; the carrier heating in the rate equations satisfies the thermal equilibrium between thelattice and carriers.

On the basis of the fast neutron attenuation, the total removal cross section at some shielding materialssuch as Al,Fe,Cu, and Pb and the compounds paraffin wax, polyethylene, borated polyethylene andconcrete have been determined,using neutrons with energy 4.5 MeV emitted from241Am-Be neutronsource.

A quantum dot laser that can be turned on at low pump powers, it is directly modulated at high speedsand that can produce sufficiently high output powers. This is very interesting for applications rangingfrom optical telecommunications and optical interconnects.Quantum dot laser on photonic crystal nanocavities at a low threshold powercomparing to those of single photonic crystal cavity lasers.The system of rate equations is solved by matlab program with ode45 method(4th Runge-Kutta at initial values of the variables of the system).Different dynamics ranging from one period to chaos are produced in the photons density of quantumdot laser under the effect of injection current modulation using a theoretical model. From thetheoretical results, the weak and strong modulation of the injection current led to periodic, self-pulsingand chaotic states.

The aim of the research is to identify the effect of Exchanging teaching in the achievement and Divergent thinking of students in scientific the fourth grade in physics

The current study included the collection of (110) of Clinical samples Pseudomonas-aeroginosa frommodelsbacteria from Sarsarymodels for burn patients in Thi-Qar Governorate for the period(1/12/2016 until 1/7/2017). The diagnosis of bacteria was based on plant traits, microscopicexamination and growth on the differential and standard biochemical tests. The method of spreadingthe tablets andmeasuring the inhibition areas around the disk were used to test antibiotic resistance,(16) isolates were shown to be resistant antibiotics resistance to both antibiotics (Levoflaxacin 90%,Amikacin80%, Aztraonam 75%, Ampicillin 95% ,Carbenicillin80% , Cibrofloxacin 90%, Gantamicin75% ,Cftazillin 70% ,Tetracycllin 55%, Imipenem 30%)

The current study was conducted to find out the causes of the prevalence of bladder cancer in theprovince of Thi Qar and its surroundings. Our result collect from the was data base of the Departmentof Health of Thi Qar from April 2012 until May 2014.The study found that there were 103 cases of bladder cancer from 1235 other cancer cases in period ofstudy. Bladder cancer was spread as following:(63)cases were reported in the city of Nasiriyah city, including (16 )cases of females and (47 )cases ofmales. In Shatrah( 21) cases were recorded including (8) cases of females and( 13) cases of males ,The number of cases recorded in Al-Rifai City was (9) cases, including (3) cases in females and (6)cases in males. Suq al-Shuyukh city was recorded (7 )cases including (2) cases in females and (5)cases in males, while the number of patients in the city of Chebaish (3) cases, including (1) one femalesand (2) in males.

Fourier Transform Infrared of three carboxylic acids adipic, cinamic and hippuric acids as
microcrystalline powder have been studied. The vibrational spectra were calculated using PM3 and ab
initio calculations employing the poluk ribiere optimizer for cinamic and hippuric acids while the
steepest descent optimizer was used for adipic acid. It was found that the remarkable differences
concerning with the assignments of the vibrational spectra which were investigated between PM3 and
ab initio methods. In addition the calculated spectra were compared with experimental data

In this paper, we prove coupled fixed point theorems for somemappings by using the concepts qcontractivesoft mapping andR-weakly commutingsoft mappings in soft metric spaces andfuzzysoftmetric spaces.

In this research , Line Spread Function (LSF) for elliptical aperture was studied, Also the effect ofLorentzian illumination with different values of (Г), full width half maximum (FWHM), and Gaussianillumination with different values of standard deviation were studied, In case of diffraction limitedsystem and with present of coma aberration . The results showed that the type of the filters reduce theeffect of coma aberration where the Strehl ratio is increasing and also the shifting of the function when(ѱ=90) for coma aberration is decreasing.

The objective of the current research is to identify the effect of the strategy of multipleintelligences in the development of creative thinking among the students of the sixth primary in theEnglish language in the province of Dhi Qar district of Shatrah - Almtasiriyah primary school for boys.To achieve the goal of the research was formulated by the following zero hypothesis:* There was nostatistically significant difference at the level of significance (05, 0) between the mean difference inthe pre-and post-test scores of the experimental group students who studied the English languageaccording to the strategy of multiple intelligences in the development of creative thinking and theaverage differences in the test scores of tribal and They studied the same material according to thetraditional way of testing creative thinking. In order to verify the validity of this hypothesis