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OALib Journal期刊

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Desmoid Tumor of the Pelvis in Children: One Case Report  [PDF]
Hana El Mansouri, Amal Zourair, Hanane Hammaoui, Salma Amouzoune, Ibtissam Zouita, Dounia Basraoui, Hanane Rais, Hicham Jalal
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105122
Abstract:
Desmoid tumors are invasive and aggressive deep fibromatosis rare in children. They occur in muscles, their sheaths and fasciae. Medical imaging (CT and MRI) can suggest the diagnosis, guide the therapeutic management and the follow-up. We report a pediatric case of desmoid tumor of the pelvis through which we describe the clinical and radiological appearance of these tumors in children.
On the Maximum Likelihood and Least Squares Estimation for the Inverse Weibull Parameters with Progressively First-Failure Censoring  [PDF]
Amal Helu
Open Journal of Statistics (OJS) , 2015, DOI: 10.4236/ojs.2015.51010
Abstract: In this article, we consider a new life test scheme called a progressively first-failure censoring scheme introduced by Wu and Kus [1]. Based on this type of censoring, the maximum likelihood, approximate maximum likelihood and the least squares method estimators for the unknown parameters of the inverse Weibull distribution are derived. A comparison between these estimators is provided by using extensive simulation and two criteria, namely, absolute bias and mean squared error. It is concluded that the estimators based on the least squares method are superior compared to the maximum likelihood and the approximate maximum likelihood estimators. Real life data example is provided to illustrate our proposed estimators.
Acne Flares among University Female Students: The Role of Perceived Factors  [PDF]
Amal A. Kokandi
Journal of Cosmetics, Dermatological Sciences and Applications (JCDSA) , 2013, DOI: 10.4236/jcdsa.2013.33A2006
Abstract:

Objectives: Acne is a common skin disease especially in adolescents and young adults. Several pathogenetic factors are implicated in causing the disease. Typically acne flares and remits in its course. Several factors can cause flares. The aim of this study was to assess the perceived factors of acne flares and the idea of sun creams causing skin darkening. Methods: A questionnaire study of the perceived factors in causing acne flares was studied in university female students. These included food, stress, hygiene and menstrual periods. In addition, the effect of sun creams on causing skin darkening was asked. Results: Food was implicated by 43.2% of patients. Stress and menstrual periods were thought to exacerbate acne by more than 70% of patients while 80% of patients did not think bad hygiene worsened acne. 40% of patients thought the use of sun creams cause skin darkening. Conclusion: More controlled studies are needed to explore the effect of food on acne. Dermatologists need to explain the benefit of using sun creams especially to acne patients while using standard treatments.

Soil Salinity Mapping and Monitoring in Arid and Semi-Arid Regions Using Remote Sensing Technology: A Review  [PDF]
Amal Allbed, Lalit Kumar
Advances in Remote Sensing (ARS) , 2013, DOI: 10.4236/ars.2013.24040
Abstract:

Soil salinity is a serious environmental problem especially in arid and semiarid areas. It either occurs naturally or is human-induced. High levels of soil salinity negatively affect crop growth and productivity leading land degradation ultimately. Thus, it is important to monitor and map soil salinity at an early stage to enact effective soil reclamation program that helps lessen or prevent future increase in soil salinity. Remote sensing has outperformed the traditional method for assessing soil salinity offering more informative and professional rapid assessment techniques for monitoring and mapping soil salinity. Soil salinity can be identified from remote sensing data obtained by different sensors by way of direct indicators that refer to salt features that are visible at the soil surface as well as indirect indicators such as the presence of halophytic plant and assessing the performance level of salt-tolerant crops. The purposes of this paper are to 1) discuss some soil salinity indicators; 2) review the satellite sensors and methods used for remote monitoring, detecting and mapping of soil salinity, particularly in arid and semi-arid regions; 3) review various spectral vegetation and salinity indices that have been developed and proposed for soil salinity detection and mapping, with an emphasis on soil salinity mapping and assessment in arid and semi-arid regions; and 4) highlight the most important issues limiting the use of remote sensing for soil salinity mapping, particularly in arid and semi-arid regions.

Characteristics and Risk Factors Attributed to Coronary Artery Disease in Women Attended Health Services in Gaza-Palestine Observational Study  [PDF]
Yehia Abed, Amal Jamee
World Journal of Cardiovascular Diseases (WJCD) , 2015, DOI: 10.4236/wjcd.2015.51002
Abstract: Coronary artery disease (CAD) is the leading cause of death in both sexes worldwide, and becomes number one killer in women due to many factors including increase in traditional risk factors, delays in apparition of symptoms, under estimation of diagnosis test and treatment. Our study aims to identify risk factors for coronary artery disease among women with chest pain underwent coronary angiography during years (2010-2013) in cardiology center. The study design is an observational among 688 women-aged 32 - 96 years; the mean age of our study population is 61 years. Risk factors are abstracted from patients’ files. Women with documented coronaries disease tend to be older, have higher, systolic blood pressure, serum level of triglyceride, and impaired clearance creatinine. 59.4% of them are menopause with higher prevalence of hypertension and diabetes (58.6% and 63.6%). Significant positive association is found in women with myocardial infarction, unstable angina, stable angina and presence of obstructive coronary artery disease respectively (89.6%, 82.3%, 59.1%) in opposite women presented with atypical chest pain have high prevalence of normal coronaries (95.7%). About 57.6% have more than three risk factors, and 55.3% are obese or overweight. In addition, 42.1% of them have impaired systolic function. We conclude that cardiovascular risk factors are highly prevalent among Palestinians women in Gaza and the combination of risk factors is common. Interventions to minimize CAD in our population are needed.
Occurrence and Evaluation of Chromium Reducing Bacteria in Seepage Water from Chromite Mine Quarries of Orissa, India  [PDF]
Satarupa Dey, Amal K. Paul
Journal of Water Resource and Protection (JWARP) , 2010, DOI: 10.4236/jwarp.2010.24044
Abstract: Chromium pollution due to leaching and weathering of chromite mine overburden in mine seepage water is a serious environmental problem. In an attempt to explore the indigenous chromate resistant and reducing bacteria from chromite mine quarry seepage, 145 aerobic, heterotrophic bacteria were isolated from 14 mine seepage samples derived from chromite mines of Sukinda valley and Baula-Nuasahi belt in Orissa, India. A total of 109 isolates which were tolerant to 2 mM Cr(VI) showed different degrees of Cr(VI) reducing activ-ity in complex KSC medium and synthetic Vogel Bonner (VB) broth. Ten isolates belonging to genera like Pseudomonas, Acinetobacter, Alcaligenes, Cupriavidus and Corynebacterium were selected on the basis of their chromate reducing efficiency and it was found that they could reduce more than 50 and 75% of Cr(VI) in VB broth and KSC medium respectively. The sole Gram-positive isolate, Corynebacterium paurometabo-lum SKPD 1204 (MTCC 8730) showed maximum chromate reducing capacity in both VB broth (63.7%) and KSC medium (92%) and was capable of reducing nearly 95% of the total Cr(VI) in the mine seepage when it was grown in the mine seepage supplemented with 2% VB concentrate.
Optimization of Chromate Reduction by Whole Cells of Arthrobacter sp. SUK 1205 Isolated from Metalliferous Chromite Mine Environment  [PDF]
Satarupa Dey, Amal K. Paul
Geomaterials (GM) , 2012, DOI: 10.4236/gm.2012.24012
Abstract: Arthrobacter sp. SUK 1205 isolated from metalliferous chromite mine environment of Orissa, India showed wide degree of tolerance to heavy metals including Cr(VI), variety of antibiotics and was also capable of reducing Cr(VI) during growth. Freshly grown whole cells of this bacterium were evaluated for chromate reduction under batch culture using Vogel Bonner (V. B.) broth as the base. Cells of SUK 1205 were capable of completely reducing 100 μM Cr(VI) in V. B. broth within 48 h of incubation. Reduction of chromate increased with increase in cell density which attained maximum at 1010 cells/ml, however, reverse was the phenomenon when the concentration of Cr(VI) increased gradually. Glycerol, glycine and glucose promoted chromate reduction efficiency of the cells when used as electron donors. Optimum pH and temperature were found to be 7.0 and 35°C respectively. The process of reduction was inhibited by Ni(II), Mn(II), Zn(II) and Co(II), but Cu(II) and Fe(III) was promotive in nature. On the other hand, 2, 4-dinitrophenol was found to be neither promotive nor inhibitory for the reduction process, but carbonyl cyanide-m-chloro phenyl hydrazone, sodium azide, sodium fluoride and N,N,-dicyclohexyl carboiimide were inhibitory. Cells of SUK 1205 when permeabilized with toluene, triton X-100 and tween 80 showed an enhancement of the process and thereby indicated that reduction of Cr(VI) was mainly associated with soluble component of the cells. Arthrobacter sp. SUK 1205, therefore, showed great promise for use in Cr(VI) detoxification under a wide range of environmental conditions.
Evaluation of Acne Quality of Life and Clinical Severity in Acne Female Adults
Amal Kokandi
Dermatology Research and Practice , 2010, DOI: 10.1155/2010/410809
Abstract: Acne is a common disease especially among teenagers. It has a considerable psychological impact on affected individuals. The aim of this paper was to assess if the effect of acne on acne-related quality of life is correlated to acne clinical severity. 112 university female students attending the university medical clinics with acne complaints were examined. Cardiff Acne Disability Index (CADI) was used to assess acne-related quality of life, and global acne grading system (GAGS) was used to assess clinical severity of acne. There was no correlation between acne severity (GAGS scoring system) and quality of life impairment as assessed by CADI score (=0.145, =.127). Additionally, CADI score did not correlate with disease duration or age of patients. We therefore conclude that acne clinical severity alone does not affect acne-related quality of life changes. Many other factors might play a role.
Pulse oximetry
Amal Jubran
Critical Care , 1999, DOI: 10.1186/cc341
Abstract: The human eye is poor at recognizing hypoxemia. Even under idealconditions, skilled observers cannot consistently detect hypoxemia until theoxygen (O2) saturation is below 80% [1]. Thedifficulty that physicians have in detecting hypoxemia was recently exemplifiedin a study of over 14000 patients being evaluated at the UCLA EmergencyDepartment [2]. Patients were monitored by oximetry butrecordings were given to physicians only after they completed their initialassessment. Changes in diagnostic testing and treatment were most likely at anO2 saturation of 89%, and changes were actually less common at lowersaturations, probably because the physicians were able to detect evidence ofhypoxemia without requiring a pulse oximeter.With the proliferation of pulse oximeters in different locations ofthe hospital throughout the 1980s, several investigators demonstrated thatepisodic hypoxemia is much more common than previously suspected with anincidence ranging from 20-82% [3,4,5] (Fig. 1). Thesignificance of episodic desaturation on patient outcome is largely unknown[6]. In patients admitted to a general medical service,Bowton et al. [7] found that O2saturation < 90% of at least 5 min duration occurred in 26% of the patients.On follow-up over the next 4-7 months, those patients experiencing hypoxemiaduring the first 24 h of hospitalization had more than a threefold highermortality than patients who did not desaturate. Although episodic desaturationmay simply be a marker of increased risk rather than the direct cause ofdecreased survival, an increased mortality rate was still observed in patientswith episodic hypoxemia when the investigators corrected for severity ofillness. Whether or not the early detection and treatment of episodic hypoxemiacan affect patient outcome remains unknown.Pulse oximetry is based on two physical principles: (a) the presenceof a pulsatile signal generated by arterial blood, which is relativelyindependent of non-pulsatile arterial blood, venous and cap
Entre prevenir e normalizar, que lugar terá o sofrimento da crian?a?
Hachet, Amal;
ágora: Estudos em Teoria Psicanalítica , 2006, DOI: 10.1590/S1516-14982006000100002
Abstract: through the observation of a four-year-old boy taken in psychotherapy in the frame of buttes-chaumont consultation, the author discusses the inherent paradox of the social expectation in front of the children's analyst: a normalization.
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