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Search Results: 1 - 10 of 325699 matches for " Yunus S?ylet "
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Penile abnormalities
Yunus Sylet
Turk Pediatri Ar?ivi , 2010,
Abstract: Hypospadias is a congenital development anomaly of penis. The meatus is located in between glans penis and perineum. Frenulum is absent. The glans does not fuse on the ventral side. Ventral preputial development is incomplete. There is usually associated a variable degree of chordee. Hypospadias is classifed according to level of meatus. Severe hypospadias and chordee, bilateral undescended testis, small penis may be the signs of a sexual development disorder and further diagnostic evaluation is indicated. Circumcision without repair of hypospadias is contraindicated. Surgical correction of hypospadias should be completed by 15 months of age. Epispadias, penile agenesis, diphallia, penile torsion, penoscrotal fusion, concealed penis, micropenis, priapism and penoscrotal transposition are the other penile anomalies. This section is basically written for the diagnosis of penile anomalies and associated malformations, timing of surgery and to give take home messages for the pediatricians. Surgical correction of penile anomalies requires experiences in the field of pediatric urology and it is performed by Pediatric Surgeons and Pediatric Urologists. (Turk Arch Ped 2010; 45 Suppl: 94-9)
Morphometric Analysis of Drainage Basins in the Western Arabian Peninsula Using Multivariate Statistics  [PDF]
Ali P. Yunus, Takashi Oguchi, Yuichi S. Hayakawa
International Journal of Geosciences (IJG) , 2014, DOI: 10.4236/ijg.2014.55049
Abstract:

The uplift of the Arabian Shield and the opening of the Red Sea led to the development of steep drainage systems in the Western Arabian Peninsula. Although the Peninsula has been studied from a geological perspective, in relation to oil production, plate tectonics and eolian systems such as sand dunes, the steep mountainous drainage basins have received much less attention. This paper aims to assess the characteristics and development of 36 drainage basins in the Western Arabian Peninsula, using a digital elevation model (DEM), principal component analysis (PCA), and hierarchical cluster analysis (CA). Three major principal components (PC1 to PC3) are found to explain 73% of total variance. CA divided the basins into two or four groups. The division by CA strongly reflects PC1, showing that the two analyses give comparable results. PC1 strongly reflects basin dimensions and drainage texture, and their positive correlations indicate the significant effect of basin relief and slope on mass wasting and limited stream incision in small basins under an arid climate. PC2 mainly reflects the effect of bedrock geology, suggesting that volcanic rocks tend to produce more elongated and less eroded immature basins than crystalline rocks do. PC3 mainly reflects the basin relief and slope and the length of each stream segment, which may also reflect the effect of mass wasting on stream development.

Vacuum Delivery in a Tertiary Institution, in Northern Nigeria: A 5-Year Review  [PDF]
I. A. Yakasai, I. S. Abubakar, E. M. Yunus
Open Journal of Obstetrics and Gynecology (OJOG) , 2015, DOI: 10.4236/ojog.2015.54031
Abstract:

Background: There is a progressive shift away from the use of forceps in favour of the vacuum extractor as the instrument of choice for operative vaginal deliveries. The overall objective of this is to improve safe motherhood by reducing the contribution of second stage of labour complications to maternal mortality and morbidity. Objective: This study was carried out to determine the incidence, indications, outcome and complications of Ventouse delivery in Aminu Kano Teaching Hospital, Kano, Nigeria. Materials and Methods: This was a retrospective study carried out at the Aminu Kano Teaching Hospital. The case notes of all parturients who had vacuum deliveries in the hospital within January 2008 to December 2012 were retrieved from the statistics unit of the hospital and analysed using SPSS. Results: 22,680 patients delivered in the hospital over this 5-year period. Ventouse was used on 210 occasions giving an incidence rate of 0.9%. One hundred and eighty (85.7%) had successful vacuum delivery. The failed extractions (14.3%) were delivered by caesarean sections. The mean age of the patients was 29.4 years. The mean parity was 2.2. Ninety (42.9%) were primipara while 120 (57.1%) were multipara. The commonest indication for the vacuum delivery was prolonged second stage of labour in 45.2% of cases. The commonest maternal complication was primary postpartum haemorrhage (9.5%). Foetal complication occurred in about 31% of vacuum deliveries, the commonest (18.1%), being cephalhaematoma. Conclusion: The incidence rate of vacuum delivery is low. Thus, active training in the art of vacuum assisted vaginal delivery is clearly needed during residency.

Design, Manufacture and Measurements of Beta-Type Stirling Engine with Rhombic Drive Mechanism  [PDF]
Mohammed Yunus, Mohammad S. Alsoufi, Anil Kumar Rathod
Modern Mechanical Engineering (MME) , 2016, DOI: 10.4236/mme.2016.64012
Abstract: The purpose of carrying out present work is to design, build and test a rhombic drive Stirling engine with a β-type configuration consisting of two dynamic pistons (displacer and power) reciprocates in the in-line concentric cylinder arrangement. The displacement rod is assembled concentrically inside the power piston rod. The rhombic drive mechanism is proposed in such a way that, by using a pair of gear wheels the sliding motion of both piston rods is controlled and thus, an engine is balanced. The developed prototype has a swept volume of 75 cm3 with the displacer piston and power piston cylinder hot ends heated by liquefied petroleum gas (LPG) burner and cooled water, respectively. It uses air as the working gas at atmospheric pressure for initial charging of the engine. Several designs were studied before settling on a β-type configuration. The LPG gas burner was considered as a potential heat source. The various elements of an engine (heater, cooler, re-generator, flywheel and piping systems) were designed, constructed and analyzed. The testing results revealed that the engine at initial atmospheric air filling started working in only about 120 seconds at an LPG heater temperature of 400 (824°F) with 280 rpm. At a heater temperature of 550 (1022°F), the engine speed was 630 rpm. At the engine speed of 245 rpm, the maximum torque was 0.215 Nm, while the maximum power was 8 Watts at 355 rpm. Engine speed increased with the increase of flame temperature. Several tests were performed on the engine to improve its running efficiency and critical problem areas were isolated and addressed. Moreover, results revealed that Stirling engines working with relatively low-temperature air are potentially attractive engines of the future, especially LPG powered low temperature differential Stirling engines. The Stirling engine was capable of generating between 50 to 100 Watts of electricity.
Establishment of an in vitro transcription system for Peste des petits ruminant virus
Yunus Mohammad,Shaila Melkote S
Virology Journal , 2012, DOI: 10.1186/1743-422x-9-302
Abstract: Background Peste-des-petits ruminants virus (PPRV) is a non segmented negative strand RNA virus of the genus Morbillivirus within Paramyxoviridae family. Negative strand RNA viruses are known to carry nucleocapsid (N) protein, phospho (P) protein and RNA polymerase (L protein) packaged within the virion which possess all activities required for transcription, post-transcriptional modification of mRNA and replication. In order to understand the mechanism of transcription and replication of the virus, an in vitro transcription reconstitution system is required. In the present work, an in vitro transcription system has been developed with ribonucleoprotein (RNP) complex purified from virus infected cells as well as partially purified recombinant polymerase (L-P) complex from insect cells along with N-RNA (genomic RNA encapsidated by N protein) template isolated from virus infected cells. Results RNP complex isolated from virus infected cells and recombinant L-P complex purified from insect cells was used to reconstitute transcription on N-RNA template. The requirement for this transcription reconstitution has been defined. Transcription of viral genes in the in vitro system was confirmed by PCR amplification of cDNAs corresponding to individual transcripts using gene specific primers. In order to measure the relative expression level of viral transcripts, real time PCR analysis was carried out. qPCR analysis of the transcription products made in vitro showed a gradient of polarity of transcription from 3’ end to 5’ end of the genome similar to that exhibited by the virus in infected cells. Conclusion This report describes for the first time, the development of an in vitro transcription reconstitution system for PPRV with RNP complex purified from infected cells and recombinant L-P complex expressed in insect cells. Both the complexes were able to synthesize all the mRNA species in vitro, exhibiting a gradient of polarity in transcription.
Vascular Depression
Yunus Emre S?nmez,?. ?zlem Erden Ak?
N?ropsikiyatri Ar?ivi , 2013,
Abstract: Research until today has found a positive relationship between vascular risk factors and depression. With the advance in neuroimaging methods in the last years, a more definite relation between cerebrovascular diseases and old-age depression have been described, and in the light of the studies in this field, a ‘vascular depression’ subtype has been defined. According to this hypothesis, ‘vascular depression’ implies a special depression subtype which begins first time in old age, which is accompanied less by depressive mood, characterized by impairment in cognitive abilities, especially in executive functions, dominated by psychomotor retardation and somatic symptoms, and lack of family history of depression. A group of researchers stated that defining vascular depression only with clinical findings would be insufficient, suggested brain imaging findings are required for the diagnosis, and subcortical hyperintensities are related to depression symptoms. Late-onset depression is shown to be related to frontal subcortical white-matter hyperintensities, and these findings were found to be correlated with affect dysregulation and executive dysfunction in late-life depression. Executive dysfunction as well as memory and attention problems in late-onset depression have been shown in different studies. Thus, vascular depression hypothesis is thought to be related with subcortical dementia upon these findings. There is currently no consensus on the concept of vascular depression and diagnostic criteria. But this concept which is explaining a subgroup of late-life depressions, predicting the treatment outcome, and implying a preventable disease with the control of vascular factors, makes vascular depression a very important topic. In this review, research on vascular depression hypothesis, findings and critics about the concept will be reviewed.(Arc-hi-ves of Neu-ropsy-chi-atry 2013; 50: 1-8)
A novel interactive OBE approach in SCM pedagogy using beer game simulation theory
S. E. S. Bariran,K. S. M. Sahari,B. Yunus
Computer Science , 2014,
Abstract: The primary challenge in SCM pedagogy is the learners interaction with the dynamic nature of supply chain transactions. Once achieved, it is also required to evaluate learners learning experience based on their performance. In this paper, a combination of outcome-based education (OBE) and simulation-based education is proposed focusing on beer game theory. The analysis is based on 336 runs of beer game simulation within a target group of 56 participants divided into 14 subgroups (SG1-SG14).The purpose of the study is mainly to investigate the effect of mutual interactions on students learning process using supply chain total cost and ordering fluctuations as critical measurement criteria.
Prediction of Resilience of Adolescents Whose Parents Are Divorced  [PDF]
Yunus Altunda?, Sefa Bulut
Psychology (PSYCH) , 2014, DOI: 10.4236/psych.2014.510134
Abstract:

The purpose of this study is to examine the predictive effect of life satisfaction and loneliness level of adolescents with divorced parents on resilience. The study has been carried out on 144 adolescents, 75 of whom are female and 69 are male, and whose parents are officially divorced. The study group consisted of students who are attending different types of high schools in the city of Bolu central districts. Loneliness Scale, Life Satisfaction Scale and Adolescents Resilience Scales were utilized in the data collection process. Pearson Moment Correlation and Multiple Regression analyses were used in data analysis. The results revealed that, while there was a positive relationship between resilience and life satisfaction, a strong negative relationship was found between their resilience and loneliness level of the adolescents whose parents are divorced. Regression analysis revealed that, while loneliness was a significant predictor on resilience, life satisfaction was not a significant predictor of resilience. The findings of this research were discussed within the scope of the related literature.

Usage of Mobile Technologies in Social Skills Development  [PDF]
Yunus Günindi
Creative Education (CE) , 2014, DOI: 10.4236/ce.2014.516174
Abstract: In this study, it has been aimed to reveal that pre-school children’s social adaptation skills can be supported by the application of frame code. The other aim of this study is to create awareness about the possible application areas of mobile learning technologies within the frame code in pre-school education. For this purpose, the study that consists of four experimental and four control group classes coming from similar socio-economic families children in five age groups that continued in kindergarten was carried out. 162 children participated in this study including 81 applications and 81 control groups. “Social Skills Training Program” supported by Frame Code Application (consisting of 12 acquisitions and 41 indicators) was prepared and during seven weeks, it was administered under the guidance of teachers. In order to evaluate the data before and after implementation, “Social Adaptation and Skills Scale” was used. According to the results of the study, in terms of sub-factors and social adaptation of the scale of “Social Adaptation and Skills Scale”, it was found that there was a significant difference in favor of the experimental group between experimental and control groups after application; however, after the application, social inadaptability sub-factor scores of the children in the experimental group were lower than the scores of control group children.
Well-Posedness of Gaver’s Parallel System Attended by a Cold Standby Unit and a Repairman with Multiple Vacations  [PDF]
Abdukerim Haji, Bilikiz Yunus
Journal of Applied Mathematics and Physics (JAMP) , 2015, DOI: 10.4236/jamp.2015.37101
Abstract:

We investigate Gaver’s parallel system attended by a cold standby unit and a repairman with multiple vacations. By using C0-semigroup theory of linear operators in the functional analysis, we prove well-posedness and the existence of the unique positive dynamic solution of the system.

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