Pregnancy in the Obese Woman Clinical Management

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Experimental Study of Low-Speed Cavity Flow Using Steady Jets

Open cavity ሺܮ/ܦ = 4ሻ was examined at low speed ሺܷஶ = 26 ݉/ݏሻ. The baseline flow showed a typical open cavity flow. It was also found that a region of relatively high velocity fluctuations (indicated by RMS values) extends along the cavity separated shear layer from the mid of the cavity to the cavity’s trailing edge. Steady jets at an outlet velocity of 1.8 m/s was forced through a narrow slot at the leading edge. The jets modified the profile shape of the averaged ܷ velocity for the shear layer at the close proximity of the leading edge. However, the jet increased the fluctuation in the separated shear layer

Control of Cavity-Induced Drag Using Steady Jets

Separated shear layer oscillations in open cavities can induce drag, noise and vibration. This issue has many aerospace applications such as Landing gears and control surfaces [1]. Recently, phase-cancellation [1] and offinstability frequency excitation [2] & [3] approaches have been incorporated in different open-loop and feedback control systems. Despite the high control performance of these systems, further enhancement is still possible. In this study, steady jets, as shown in fig. 1, are forced through 2mm, two-dimensional slots at the leading and trailing edges of the cavity. In order to study the performance of this novel approach, different cases will be examined, including: jet combination (blowing from cavity leading edge, suction from cavity leading edge and blowing-suction), jet angle (parallel or deflected jet) and jet-to-free stream velocity factor /.

Experimental Study of Low-Speed Cavity Flow Using Steady Jets

Open cavity ሺܮ/ܦ = 4ሻ was examined at low speed ሺܷஶ = 26 ݉/ݏሻ. The baseline flow showed a typical open cavity flow. It was also found that a region of relatively high velocity fluctuations (indicated by RMS values) extends along the cavity separated shear layer from the mid of the cavity to the cavity’s trailing edge. Steady jets at an outlet velocity of 1.8 m/s was forced through a narrow slot at the leading edge. The jets modified the profile shape of the averaged ܷ velocity for the shear layer at the close proximity of the leading edge. However, the jet increased the fluctuation in the separated shear layer

The effectiveness of a unit of study based on the theory of funds of knowledge in the development of agricultural and motivational concepts among the 5th grader students in Oman

The present study aimed to reveal the effectiveness of a proposed study unit based on the theory of funds of knowledge in the development of agricultural concepts, and the level of motivation towards learning among students of the fifth grade in the Sultanate of Oman. The researchers used a semi-experimental approach, to achieve the objectives of the study. The study sample consisted of (21) were selected from Al-Bushra school from the governorate of Al-Dakhiliyah. To achieve the objectives of the study, the researchers developed two tools: The first was an agricultural concept included in the proposed study unit compromised of (21) questions and the second tool was a motivation scale towards learning consisting of (22) items. The stability of the tools was verified by a group of experts while their reliability was obtained by applying the coefficient Alpha Cronbach and it was (0.72), for the Agricultural concepts test and (0.0878) for the motivation scale towards learning. Findings of the study revealed that there were significant statistical differences in both agricultural concepts test and motivation scale towards learning at the level of (α = 0.05) in favor post-test. Consequently, the researchers proposed several recommendations; such as: employing the local agricultural concepts in the curriculum; designing the curriculum to suit the student environments in which they live; and benefiting from families and their life experiences and employing them in the educational process

Effectiveness of misoprostol for induction of first and early second trimester spontaneous miscarriages in parous women

Background: Medical termination of missed miscarriage and incomplete miscarriage with misoprostol, are an alternative to surgical evacuation (dilatation and curettage). This study aimed to evaluate the effectiveness of misoprostol in highly parous woman for incomplete and missed miscarriage.Methods: This was a retrospective study was conducted in two different time lines (2010 and 2014). All patients admitted to the Sultan Qaboos University hospital, Muscat, Oman, for the management of first-trimester miscarriages (missed and incomplete types) during the study period were included. Some women were moved to dilation and curettage even after misoprostol. The effect of gravidity and parity on those women in whom misoprostol was not effective was studied.Results: The overall success rate of misoprostol for the management was 62.14% in 2010 and 53.8% 2014. In nulliparous woman the success rate of misoprostol was slightly higher than parous women. There was no apparent effect of gravidity and parity of ≥ 5 or ≥ 5 on the success of misoprostol.Conclusions: Misoprostol reduced the rate of surgical evacuation among the study subjects. In highly parous and multigravid women (≥ para 5 and gravida ≥5) the success was not significantly different compared to less parous women

Signet ring cell carcinoma of the rectal stump in a known ulcerative colitis patient

Colorectal carcinoma (CRC) is the third most commonly diagnosed cancer worldwide and is the second most common cause of cancer-related deaths. However, the Omani population shares the major burden as the most prevalent carcinoma. The disease is comparatively higher in males than females. Patients with pre-existing risk factors, including inflammatory bowel disease, are at increased risk of developing neoplasia. Among the various histopathological subtypes of adenocarcinoma in the rectum, signet ring cell carcinoma is the rarest and accounts for approximately 1% of the cases. Given the aggressive nature of this tumor, advanced presentation, stage, and poor prognosis, regular endoscopic surveillance is essential. Hereby, we report a rare case of signet ring cell carcinoma arising in the rectal stump in an already diagnosed and operated patient of Ulcerative colitis

Follicular Dendritic Cell Sarcoma : Cytogenetics and pathological findings

Follicular dendritic cell sarcoma (FDCS) is a rare neoplasm with a non-specific and insidious presentation further complicated by the difficult diagnostic and therapeutic assessment. It has a low to intermediate risk of recurrence and metastasis. Unlike other soft tissue sarcomas or histiocytic and dendritic cell neoplasms, cytogenetic studies are very limited in FDCS cases. Although no specific chromosomal marker has yet been established, complex aberrations and different ploidy types have been documented. We report the case of a 39-yearold woman with FDCS who presented to the Sultan Qaboos University Hospital in Muscat, Oman, in February 2013. Ultrastructural, immunophenotypical and histological findings are reported. In addition, karyotypic findings showed deletions of the chromosomes 1p, 3q, 6q, 7q, 8q and 11q. To the best of the authors’ knowledge, these have not been reported previously in this tumour. Techniques such as spectral karyotyping may help to better characterise chromosomal abnormalities in this type of tumour

Control of Cavity-Induced Drag Using Steady Jets

Separated shear layer oscillations in open cavities can induce drag, noise and vibration. This issue has many aerospace applications such as Landing gears and control surfaces [1]. Recently, phase-cancellation [1] and offinstability frequency excitation [2] & [3] approaches have been incorporated in different open-loop and feedback control systems. Despite the high control performance of these systems, further enhancement is still possible. In this study, steady jets, as shown in fig. 1, are forced through 2mm, two-dimensional slots at the leading and trailing edges of the cavity. In order to study the performance of this novel approach, different cases will be examined, including: jet combination (blowing from cavity leading edge, suction from cavity leading edge and blowing-suction), jet angle (parallel or deflected jet) and jet-to-free stream velocity factor /.

Attitudes of Pre-school Teachers towards Movement Education

Educators’ attitudes have drawn attention of researchers worldwide, where numerous studies have been conducted to explore the factors that influence educators’ attitudes toward educational topics in order to understand them and direct them in ways that contribute to the enhancement of the educational practices. In this study, we aimed to identify attitudes of early childhood educators in the Sultanate of Oman towards movement education, and to investigate the differences in attitudes according to nationality and qualification. The sample of this study consisted of 201 pre-school female educators in the Sultanate of Oman. The participants responded to Attitudes towards Movement Education Scale, which consisted of three dimensions (emotional, cognitive and behavioral). This scale was designed and modified for the purpose of this study. The results of this study revealed that the participants’ attitudes towards movement education were positive in general. The emotional dimension ranked first (87.7%), followed by the cognitive (82.6%) and behavioral dimensions (78.8%). The results also showed that there were differences in attitudes towards movement education due to educators’ nationality and educational levels