fateme karami

In this research, the electronic, magnetic and optical properties of inverse Heusler alloys Ti2ScX (X=Si,Sn) were studied using the Quantum Espresso software package based on the density functional theory. The results of the electronic properties investigation showed that both alloys are half-metals in their equilibrium lattice constant and exhibit 100% spin polarization around the Fermi level. The indirect half-metallic band gap for Ti2ScSi and Ti2ScSn alloys were obtained as 0.35eV and 0.11eV, respectively. Furthermore, considering the high values of the Curie temperature of Ti2ScX (X=Si, Sn) alloys, it can be concluded that these alloys are stable at room temperature. Analyzing magnetic properties revealed that Ti2ScX (X=Si,Sn) alloys exhibit ferromagnetic behavior in their stable structure, and their total magnetic moment is 7µB/f.u., which is in good agreement with the Slater-Pauling rule. Consequently, it can be inferred Heusler alloys Ti2ScX (X=Si,Sn) are half-metal ferromagnetism. Additionally, the optical properties of these alloys suggest their potential as electromagnetic waves absorbers.

Using the density functional theory, the electronic, magnetic and optical properties of Ti2ScGe have been investigated. The first thing that should be examined is the stable structure for the full-Heusler compound, after the investigations, a structure named type a was considered in the ferromagnetic state. This compound is studied for the first time in this paper and in the investigated conditions, it was recognized as a ferromagnetic half-metallic with a half-metallic gap of 0.4 electron volts. This compound has several acceptable factors for its applicability in making spintronics devices. Such as, half-metallic properties, high Curie temperature around 1086 K, its stability in the ferromagnetic state, and following the Slater-Pauling rule. Also, the examination of the optical properties showed that the Ti2ScGe full-Heusler compound can be further studied as a wave absorber

Using the density functional theory and generalized gradient approximation, the electronic, magnetic and optical properties of V2ScX (X = Ga, In) have been investigated. The results show that the V2ScIn is a half-metallic ferromagnet and preserved its half-metallicity in the relatively larger lattice constants. This compound has half-metallic gap of 0.45 eV. V2ScIn is suitable for spintronic applications. V2ScGa compound shows metallic behavior. These full-Heusler compounds follow the Slater-Pauling rule and have the integer total magnetization. The Curie temperature of V2ScGa and V2ScIn were estimated to be 341 and 496 K respectively. The results of investigating the optical properties show that these compounds are good candidates to absorb waves.

Hamza (AS) was the son of Abdul Muttalib, the uncle of the Prophet (PBUH) and one of the brave and courageous commanders of Islam who was martyred in the battle of Uhud and was honored with the titles of Asadullah and Sayyid al-Shuhada. With the conversion of Hazrat Hamza (AS) to Islam, Islam gained power and the Prophet (PBUH) found great support against the enemies of Islam. Familiarity with all aspects of the life of prominent figures of Islam is very important, but unfortunately some aspects of the lives of these great people have been neglected and there is not much information in recent sources and contemporary research. In this article, by referring to the ancient sources of genealogy and biography and by descriptive-analytical method, we have studied the biography of Hazrat Hamza's wives. Studies show that in the sources, three ladies are mentioned as the wives of Hazrat Hamza; Salma bint Umays, Kholeh bint Qais and a lady from Ansar and Aws tribe. Salma bint Umays and Khuleh bint Qais are considered as companion women and are among those who have narrated from the Prophet (PBUH).

Introdouction: Mucoepidermoid carcinoma (MEC) is one of the most common salivary gland malignancies. The prevalence of salivary gland tumors varies in different geographic areas. In this report, we evaluated the prevalence of MEC in Iran and compared it with that previously reported in other countries.
The files of oral pathology, Shahid Beheshti University of Medical Sciences, Amiralam and Taleghani hospitals, served as the source of the material from 2001 to 2011 for this study. Information, including patient’s age, gender, tumor location, clinical symptoms and histopathologic grade was recorded. Mann-Whitney test was used for statistical analysis.
Mucoepidermoid carcinoma accounted for 24.1% of salivary gland malignancies during the 11-year period. Most cases were diagnosed in the third to fifth decades of life and the male to female ratio was 1:03. The parotid gland was the most common location (49.5%). Tumor grading was available for 92 neoplasms and of them, 39.13% was graded low, 32.6% was intermediate and 28.26% was high grade. Swelling, pain and ulceration existed in 68.6%, 30.4% and 4.8% of patients, respectively. Forty-four point forty-five per cent of cases that demonstrated pain were high grade, 29.6% were intermediate, and 25.9% were low grade (p = 0.03). High grade tumors were more common in males (p = 0.06).
The mean age, site of involvement, sex of patient, and microscopic grading of salivary gland MEC in the Iranian population were found to be similar to those of most other countries.

Lots of vitamin D functions are mediated by its steroid family receptor (VDR). Vitamin D role in infertility is reported by significant fertility reduction in many male laboratory animals with vitamin D deficiency. The reason for reduced fertility in male VDR-null mouse model has been reported to be reduced sperm count and sperm motility. Vitamin D has effects on sperm motility, sperm-ovum coupling, and acrosome reaction stimulation. As VDR is expressed in human male reproductive system, the aim of the current study was to investigate the role of rs2228570 polymorphism of VDR gene in male infertility.
Investigation was done as a case-control study on infertile azoospermic or oligospermic men referring to Avicenna Research Institute from March 2014 to April 2015. Rs2228570 single nucleotide polymorphism (SNP) located in exon 1 of VDR gene was chosen according to its role on protein function. Blood sampling was done on cases and control groups and after DNA extraction the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) reaction was designed and performed on 100 normal cases, 100 azoospermic and 100 oigospermic control samples. Distribution of quantitative age variable was done using Student’s t-test and qualitative variables (genotype and allelic frequencies) was done using SPSS, ver. 22 (Chicago, IL, USA).
Chi-square test didn’t show significant difference between two case groups and controls (Azoosperm and control P=0.5 and oligosperm and control P=0.09). Comparing CC genotype frequency with TT and CT genotypes (azoosperm and control P=0.48 OR=0.77, oligosperm and control, P=0.17 OR=0.77) and in comparing between TT genotype with CT and CC genotypes (azoosperm and control P=0.49 OR=3.03, oligosperm and control P=0.19 OR=7.21) the difference between these groups was not significant and didn’t increase the probability of disease and didn’t show protective role against it.
According to the findings, the association between rs2228570 polymorphism of vitamin D receptor gene and infertility was not significant and investigation of other polymorphisms might show a relationship with male infertility.

A 29- year old female with bone pain and history of precocious puberty was referred for bone scintigraphy. On physical examination café au lait macular spots were noted on her neck, buttocks and left leg. Bone scan showed multiple areas of intense increased activity which was in favour of polyostotic fibrous dysplasia. Considering the presence of polyostotic fibrous dysplasia, precocious puberty and café au lait macular spots, MacCune-Albright syndrome was confirmed in this patient.