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Search Results: 1 - 10 of 461708 matches for " A. Zolfaghari "
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Stability of a Functional Equation Deriving from Cubic and Quartic Functions
M. Eshaghi Gordji,A. Ebadian,S. Zolfaghari
Abstract and Applied Analysis , 2008, DOI: 10.1155/2008/801904
Abstract: We obtain the general solution and the generalized Ulam-Hyers stability of the cubic and quartic functional equation4((3
Mobile phone text messaging and Telephone follow-up in type 2 diabetic patients for 3 months: a comparative study
Zolfaghari Mirta,Mousavifar Seyedeh A,Haghani Hamid
Journal of Diabetes & Metabolic Disorders , 2012, DOI: 10.1186/2251-6581-11-7
Abstract: Background To investigate and to compare the effectiveness of a nurse short message service (SMS) by cellular phone and telephone follow-up by nurse on Glycosylated hemoglobin (HbA1c) levels in people with type 2 diabetes. Methods Semi experimental study consisted of 77 patients with type 2 diabetes that randomly assigned to two groups: telephone follow-up (n = 39) and short message service (n = 38). Telephone interventions were applied by researcher for 3 months. SMS group that received message daily for 12 weeks. Data gathering instrument include data sheet to record HbA1c and questionnaire that consisted of demographic characteristics. Data gathering was performed at two points: initial the study and after 12 weeks. Data analyzed using descriptive and inferential statistics methods with SPSS version 11.5. Results Demographic variables were compared and all of them were homogenous. Results of this study showed that both interventions had significant mean changes in HbA1c; for the telephone group (p = 0.001), with a mean change of 0.93% and for the SMS group (p = 0.001), with a mean change of 1.01%. Conclusion Finding of this research showed that intervention using SMS via cellular phone and nurse-led-telephone follow up improved HbA1c for three months in type 2 diabetic patients and it can consider as alternative methods for diabetes control.
Determination of Loss of Coolant Accident (LOCA) in Nuclear Power Plants Using Signal Processing Method
R. Mahmoodi,M. Shahriari,A. Zolfaghari
Engineering Letters , 2009,
Abstract:
Stability of a functional equation deriving from cubic and quartic functions
M. Eshaghi Gordji,A. Ebadian,S. Zolfaghari
Mathematics , 2008,
Abstract: In this paper, we obtain the general solution and the generalized Ulam-Hyers stability of the cubic and quartic functional equation &4(f(3x+y)+f(3x-y))=-12(f(x+y)+f(x-y)) &+12(f(2x+y)+f(2x-y))-8f(y)-192f(x)+f(2y)+30f(2x).
The Occurrence of Soil Water Repellency Under Different Vegetation and Land Uses in Central Iran
A.A. Zolfaghari,M.A. Hajabbasi
Journal of Environmental Science and Technology , 2008,
Abstract: The aim of present study was to test water repellency in some arid Iranian soils and to investigate the effect of change in land-use, on water repellent soils. The persistence of soil water repellency was measured on field-moist and dried soil samples by using the Water Drop Penetration Time (WDPT) test in forest, unaltered pastures and cultivated lands of semi-arid regions. Water repellency was observed in forest, but was not observed in pasture and cultivated lands. Water repellency was not found in soil samples containing less than 4.1% organic matter. By increasing soil organic matter, soil water repellency intensity increased, too. Water drop penetration time in samples under the trees was higher than far from trees. Samples with more than 4.3% organic matter were slightly water repellent and samples with more than 4.6% organic matter were strongly water repellent. Generally, in the study area a severely water repellent soil was not found.
Effect of Open and Closed System Endotracheal Suctioning on Vital Signs of ICU Patients
M. Zolfaghari,A. Nikbakht Nasrabadi,A. Karimi Rozveh,H. Haghani
Hayat Journal of Faculty of Nursing & Midwifery , 2008,
Abstract: Background & Aim: Nowadays, mechanical ventilators are being used for some patients in ICUs due to various physiological and clinical causes. Keeping endotracheal tube clean and open is necessary in order to improve the patient's oxygenation. This study aimed to investigate the effects of open and closed system endotracheal suctioning on vital signs of patients in ICU. Methods & Materials: In this quasi-experimental study, 40 patients from Shariaty Hospital's ICU were selected using convenience sampling method. Data was collected using a record sheet. The sheet consisted of demographic characteristics and vital signs including blood pressure, mean arterial blood pressure, heart rate, respiratory rate, and arterial blood oxygen saturation percentage. Endotracheal suctioning was done randomly in 90 minute intervals once using closed method and once using open method. All patients were hyper oxygenated by Ambo bag for 2 minutes before and after the procedures. The patients' vital signs were checked and recorded using SIEMENS 680 2xi monitor before, and 2 minutes and 5 minutes after the procedures. Data were analyzed using SPSS software. Results: Systolic and diastolic blood pressures, and heart rate showed higher increase 2 and 5 minutes after the open method compared to close method (P<0.001). Arterial blood oxygen saturation percentage reduced in the open method more than in the closed one 2 and 5 minutes after the procedure (P<0.001). No significant difference was seen in the patients' respiratory rate in two methods (P>0.05). Conclusion: Closed endotracheal suction system results in lower disturbances in the vital signs than the open system. Therefore, for better results, the closed endotracheal suctioning is suggested.
The Impact of Socio-economic Factors on the Family Frequency Growth
Z. Rahnavard,A. Heidarnia,M. Vahid Dastgerdi,Mitra Zolfaghari
Research Journal of Biological Sciences , 2012,
Abstract: The impact of different factors, on family frequency growth can be interpreted by differences in probability of having extra child in each couples and explained by soci-economical and behavior factors. The aim of this study, was to determine influence of socio-economical factors on family frequency growth in Tehran. Data from a survey conducted in Tehran on ever-married women aged 15-49 by a 2 stage sampling were applied for the analysis of the influence factors. A total 2005 women were enrolled in our survey. The questionnaire used included some question about woman s education, wanted or unwanted this child, age of woman, age of husband and so. Using logic regression models it was found some affecting factors on family growth of first child to second, second child to third, fifth child to sixth. Results provided in this study, are a good guideline for the family planning programs.
The relation between female teenagers’ life style and osteoporosis prevention
Rahnavard Z,Zolfaghari M,Kazemnejad A,Zarei L
Hayat Journal of Faculty of Nursing & Midwifery , 2006,
Abstract: Background & Aim: Some aspects of life style in adulthood have major preventive role from osteoporosis in adult ages. This research has been done in order to determining female teenager’s life style in relation with prevention of osteoporosis. Methods & Materials: This research was a descriptive - analytical study. In this study, 760 person of female teenage students in high schools and pre-university centers of zone 17 in Tehran city were chosen by random classified cluster sampling method. In this study, the tool for data collection was written questionnaire, and method of it was answering to questionnaire. The questionnaire had 2 parts. First part included demographic characteristics, and second part included different dimensions of lifestyle in relation with prevention of osteoporosis, such as nutrition, exercise and physical activity, habits (smoking, using weight loss food regimen and weight loss drug). The life style categorized as 3 levels unfavorable, partially favorable, and favorable. The collected information was assessed by SPSS software and descriptive and analytical statistical methods were used to reaching study objects. Results: Results Showed nutrition, phisycal activity and exercise the highest percent of cases (51.8%, 57.7%) had undesirable lifestyle. Also 50 percent of cases had undesirable lifestyle. About habits (Smoking, using weight loss food regimen and using weight loss drug) the highest percent of cases (74.9%) had desirable lifestyle. Also there was a significant statistical relationship between life style and variables of education level (p=0.004), economical status of family (p=0.043), the birth number in family (p=0.001) and educational level of mother (p=0.005). Conclusion: According to the results of research, lifestyle of 50% of female teenagers was undesirable. Findings of this research are attentive and need more assessment and planning by responsible people in order to omitting noted problems in lifestyle.
Mercury accumulation in human hair and nails: amalgam fillings as an exposure factor
Zolfaghari Gh,Esmaeili sari A,Seyed M Ghasempouri,Faghihzadeh S
Tehran University Medical Journal , 2007,
Abstract: Background: Dental amalgam, a mixture of approximately 50% mercury with silver, tin, zinc and copper in varying ratios, is a major source of mercury pollution in the general population not occupationally exposed. The toxicity of mercury is enhanced because it is so readily absorbed, with around 90-100% of mercury vapor being absorbed through the oral mucosa. The aim of the current study is to examine the mercury levels in hair and nails in subjects with amalgam fillings.Methods: For a sample of forty university students reporting infrequent fish consump-tion, with their only known exposure to mercury from amalgam fillings, mercury levels were measured in hair and nail samples using the LECO AMA 254 Advanced Mercury Analyzer (USA), according to the ASTM standard No. D-6722 test method.Results: Mercury concentration in hair ranged from 0.09 to 3.11 mg/kg, and in nail from zero to 1.35 mg/kg. We found that subjects with five or more amalgam fillings had significantly higher levels in their hair than subjects with zero to 5 amalgam fillings (CI 95% P=0.003). However, the number of amalgam fillings had no effect on the mercury concentration in nails in these two groups (P=0.26). There was no significant difference between the levels of mercury of males and that of females tested (P=0.26 for nail and P=0.15 for hair).Conclusion: The mercury amount in hair was 1.5 times as much as that of the nail samples, may be due to the differences in the chemical compounds, particularly those with sulfur, or the deposition of those compounds that would be affected by blood circulation during formation of hair and nails. Although the amounts of mercury found in this study were below the WHO maximum acceptable level of 6 mg/kg for mercury in human hair, the levels were sufficient to warrant the use of other dental materials such as composites in order to decrease the overall rate of exposure to mercury.
An investigation of quality of life and factors affecting it in the patients with congestive heart failure
Rahnavard Z,Zolfaghari M,Kazemnejad A,Hatamipour Kh
Hayat Journal of Faculty of Nursing & Midwifery , 2006,
Abstract: Background & Aim: Improving the quality of life is generally one of the main goals in caring of the patients with congestive heart failure, so identifying factors affecting it is significantly important. This study was conducted to determining the quality of life of these patients. Methods & Materials: 184 of patients congestive heart failure who referred to clinics of Tehran University of Medical Sciences were chosen by goal-based sampling method. Data collection was done by questionnaire, which was consisted of 4 parts: individual factors, factors related to disease, patient knowledge and quality of life. Data analysis was done by SPSS computerized software. Results: Most of the researching samples in fallowing dimensions had undesirable quality of life: physical activity dimension (44.6%), Psychological dimension (47.3%), Economical/Social dimension (49.5%), total Quality of life (46.7%) and had fairly desirable quality of life in general health dimension (42.4%). There is a significant statistical relationship between quality of life and these variables: job, Education level, care giver, the intensity of illness, duration of illness period, number of refers to physician and hospitalization, duration of combination of hypertension with CHF, presence of edema, high cholesterol, characteristics of disease, the intensity of fatigue at the time of research and in last 1 month ago (p=0.000) and the kinds of using drugs (p=0.039), but there is not a significant statistical relationship between quality of life and these variable: age, gender, Marriage status, Number of people living together, Having therapeutic insurance, Smoking, Body Mass Index: BMI presence of Myocardial Infarction or other diseases and patient knowledge. Conclusion: Congestive heart failure has a negative affect on quality of life. So assessing the quality of life and promoting it is viewed as one of the duties of nurses and also as one of the major caring goals.
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