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Search Results: 1 - 10 of 325829 matches for " S. Nada "
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Classification of Latin squares
Laki? Nada S.
Journal of Agricultural Sciences , 2002, DOI: 10.2298/jas0201105l
Abstract: Efficacy and profitability of results and eventually the conclusions of an experiment were found to depend on the statistical model for organizing an experiment. No thoroughgoing studies have been reported to date in our statistical literature on Latin square designs, one of the three basic experimental designs. The objective of the study was to define the insufficiently known subsets of Latin square designs having special properties and classify them using a number of criteria.
Sexperts! Disrupting injustice with digital community-led HIV prevention and legal rights education in Thailand
Nada Chaiyajit and Christopher S. Walsh
Digital Culture & Education , 2012,
Abstract:
Clinical trials - from anecdotes to evidence based medicine
Baji? Nada,??epanovi? Danijela S.
Archive of Oncology , 2003, DOI: 10.2298/aoo0301013b
Abstract: Treatments based on theory and anecdote with extravagant public claims without being properly tested has become past time in medical practice. Only valid unbiased and relevant evidence obtained by methodology of clinical trials should be adopted in medical practice and practice guidelines. In such way clinical decisions are based on evidence rather than on authority. Inevitable part of clinical trials is medical ethics formally defined within the Nuremberg Code, World Medical Association Declaration of Helsinki and guidelines issued by the U.S. Department of Health, Education and Welfare. This paper presents in short history of clinical trials and current status worldwide.
Systematic Effects of Foreground Removal in 21cm Surveys of Reionization
Nada Petrovic,S. Peng Oh
Physics , 2010, DOI: 10.1111/j.1365-2966.2011.18276.x
Abstract: It is well-known that foreground subtraction in 21cm surveys removes large scale power. We investigate associated systematic biases. We show that removing line-of-sight fluctuations on large scales aliases into suppression of the 3D power spectrum across a broad range of scales. This bias can be eliminated by marginalizing over small k in the 1D power spectrum; however, the unbiased estimator will have unavoidably larger variance. We also show that Gaussian realizations of the power spectrum permit accurate and extremely rapid Monte-Carlo simulations for error analysis; repeated realizations of the fully non-Gaussian field are unnecessary. We perform Monte-Carlo maximum-likelihood simulations of foreground removal which yield unbiased, minimum variance estimates of the power spectrum in agreement with Fisher matrix estimates. Foreground removal also distorts the 21cm PDF, reducing the contrast between neutral and ionized regions. We show that it is the subtraction of large-scales modes which is responsible for this distortion, and that it is less severe in the earlier stages of reionization. It can be reduced by using larger bandwidths for foreground removal. In the late stages of reionization, the largest ionized regions (which consist of foreground emission only) provides calibration points which potentially allow recovery of large-scale modes. Finally, we also show that: (i) the broad frequency response of synchrotron and free-free emission will smear out any features in the electron momentum distribution and ensure spectrally smooth foregrounds; (ii) extragalactic radio recombination lines should be negligible foregrounds.
Human leukocyte antigen associations and c-reactive protein levels in lebanese patients with aggressive periodontitis—HLA and CRP in aggressive periodontitis  [PDF]
Marita Chakhtoura, Nada M. Souccar, Nayla S. Al-Akl, Alexander M. Abdelnoor
Open Journal of Stomatology (OJST) , 2011, DOI: 10.4236/ojst.2011.12005
Abstract: Background: Periodontal disease, which affects tooth- supporting structures, results from disequilibrium between the oral micro flora and host defense mecha- nisms. It has been classified into chronic (CP) or ag- gressive (AP) periodontitis according to disease onset, localization and progression. Because of their invol- vement in generating immune responses, Human Leukocyte Antigen (HLA) alleles are considered can- didate genetic risk markers for periodontitis. Addi- tionally, periodontitis appears to contribute to the severity of some systemic conditions such as cardio- vascular disease and adverse pregnancy outcome as indicated by elevated levels of C-reactive protein (CRP). Aim: The aims of this study were to deter- mine if there is an HLA-AP association in Lebanese patients, and to determine CRP levels in patients and compare them to those in healthy controls. Materials and methods: The study groups included 26 patients with AP and 39 healthy controls. HLA profiles were determined by DNA typing and CRP levels by ELISA. Results: HLA-A*30 (P-value = 0.010), HLA- B*41 (P1 = 0.012 and P2 = 0.014), HLA-DRB1*13 (P1 = 0.031 and P2 = 0.063) alleles seemed to be associ- ated with protection against AP in Lebanese patients. No linkage disequilibrium existed between alleles as-sociated with AP. Ten of 26 AP patients (38.5%) and 10 of 39 (25.7%) controls had elevated CRP lev- els. Conclusion: In conclusion, protective, but no sus- ceptible HLA alleles were detected in AP. CRP levels were not elevated in the entire AP group, and were not significantly different from controls. No linkage disequilibrium existed between alleles.
Effect of Peaches, Pears and Green Tea on Plasma Lipids Profile and Antioxidant Content in Rats Fed High Sucrose Diet  [PDF]
Nada A. Al Zunaidy, Noorah S. Al-Sowayan, Hassan M. Mousa
Food and Nutrition Sciences (FNS) , 2015, DOI: 10.4236/fns.2015.610094
Abstract: The beneficial effects of feeding syrup of peaches and pears (peel and pulp) & green tea on the restoration of the changes produced by feeding high sucrose diet on plasma lipid profile, plasma antioxidant activity, and antioxidant enzymes in red blood cells (RBC) hemolysate were studied. High sucrose diet induced hyperlipidemia as manifested by significant (P ≤ 0.05) increases in the levels of cholesterol, triglycerides (TG) and low density lipoproteins (LDL) in plasma from 103.33 ± 1.8, 61.17 ± 0.48 and 26.6 ± 5.01 mg/dl to 136.67 ± 2.2, 81.3 ± 1.5 and 64.6 ± 6.5 mg/dl respectively. The high density lipoproteins (HDL) level was not significantly affected. TG levels in heart muscles increased significantly P ≤ 0.05 from the level of 194.14 ± 4.35 μg/g in the negative control to 269.72 ± 5.39 μg/g. Administration of fruits syrup and green tea resulted in a significant variable reduction in the elevated levels of cholesterol, TG and LDL and TG in the heart. Administration of sucrose resulted also in elevation of Malondialdehyde (MDA) in plasma from 5.06 ± 0.18 in the negative control to 14.81 ± 0.48 μmol/L in the positive control. This was also accompanied by reduction in the activities of supper oxide dismutase (SOD), glutathione peroxidase (GSH-Px), catalase (CAT) and a decrease in the concentration of reduced glutathione (GSH) in plasma, indicating lipid peroxidation. The activities of SOD, GSH-Px, CAT in the negative control were 8.96 ± 0.19, 315.67 ± 5.86, 209 ± 2.18 U/gHb respectively and were reduced significantly in the positive control to 4.7 ± 0.2, 273.83 ± 7.85, 207 ± 2.53 U/g Hb. There was a significant decrease in the level of total antioxidant status (TAS) in plasma from 1.45 ± 0.09 to 0.88 ± 0.09 nmol/L. However, no statistically significant changes were noticed in the concentrations of plasma total proteins and albumin. Intake of syrup of peaches and pears (peel and pulp) & green tea increased the level of TAS and GSH and decreased the level of LDL. The treatment also decreased significantly (P ≤ 0.05) the levels of plasma cholesterol, TG and heart TG levels. The activities of SOD and GSH-Px were increased following the treatment. It can be concluded that syrup of peaches and pears (peel and pulp) & green tea modulate lipid metabolism and enhance antioxidant status and in this respect green tea produced the best effect followed by peels of pears and peaches. The beneficial effect produced by fruits syrup and green tea may be due to their contents of phytochemicals.
A Comparison between Patients’ and Residents’ Perceptions of Patient Centeredness and Communication Skills among Physicians Working at Jordan University Hospital  [PDF]
Nada A. Yasein, Farouq M. Shakhatreh, Wejdan A. Shroukh, Mohammad S. Farah, Ruba M. Jaber
Open Journal of Nursing (OJN) , 2017, DOI: 10.4236/ojn.2017.76052
Abstract: Aim: This research aims to evaluate patient-centeredness and communication skills from the patients’ point of view and that of the physicians’ point of view and compares the two outcomes. Methods: This was a cross-sectional study with a convenient sample of 418 patients and 94 residents. Instrument of the study was a structured questionnaire that aimed to evaluate patient centeredness and communication skills of the residents. Results: Residents gave themselves a significantly higher score than the score given to them by patients in most studied aspects such as the extent to which the doctor discussed the patient’s problem, the extent to which the doctor explained the problem, the doctor introduced himself, the doctor greeted the patient properly and others. The only aspect for which patients gave residents higher score than that residents gave themselves was the extent to which the doctor asked the patient about what is expected to be done (ECG, CT scan, giving antibiotics, …). Conclusion: A transformation from doctor centered approach to patient centered approach is needed.
Simultaneous determination of some antiprotozoal drugs in different combined dosage forms by mean centering of ratio spectra and multivariate calibration with model updating methods
Eglal A Abdelaleem, Nada S Abdelwahab
Chemistry Central Journal , 2012, DOI: 10.1186/1752-153x-6-27
Abstract: Method (I) is the mean centering of ratio spectra spectrophotometric method (MCR) that depends on using the mean centered ratio spectra in two successive steps that eliminates the derivative steps and therefore the signal to noise ratio is enhanced. The developed MCR method has been successfully applied for determination of MET, DF and MEH in different laboratory prepared mixtures and in tablets. Method (II) is the partial least square (PLS) multivariate calibration method that has been optimized for determination of MET, DF and MEH in Dimetrol ? tablets and by updating the developed model, it has been successfully used for prediction of binary mixtures of DF and Metronidazole Benzoate ester (METB) in Dimetrol ? suspension with good accuracy and precision without reconstruction of the calibration set.The developed methods have been validated; accuracy, precision and specificity were found to be within the acceptable limits. Moreover results obtained by the suggested methods showed no significant difference when compared with those obtained by reported methods.Mebeverine Hydrochloride (MEH), an effective antispasmodic drug that acts directly on the smooth muscle of gastrointestinal tract and is used in conditions such as irritable bowel syndrome [1]. DF, a luminal amoebicide, it is a dichloroacetamide derivative that principally acts in the bowel lumen and is used in the treatment of intestinal amoebicide [1]. Metronidazole (MET), an effective antiprotozoal drug, it is 5- nitroimidazole derivative with activity against anaerobic bacteria and protozoa [1] and is useful in both intestinal and extra intestinal amoebiasis. METB is a benzoyl ester of metronidazole that has the same action and uses [2,3], but mainly used in pediatric oral preparations because of the bland taste of the ester compared to the bitter taste of the free base [4]. Although both DF and MET act as antiprotozoal drugs, however their combination has a synergistic effect and acts on both vegetative an
Psycho-Social Implications of Blind Child
Sood S,Nada M,Nagpal RC
Indian Journal of Community Medicine , 2004,
Abstract:
Prevention of Blindness and Mobility of A Blind
Sood S,Nada M,Nagpal RC
Indian Journal of Community Medicine , 2004,
Abstract:
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