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匹配条件: “SH Hezar Khani” ,找到相关结果约2103条。
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Prevalence and Risk Factors of Osteoporosis in Postmenopausal Women with Rheumatoid Arthritis: A Brief Report
M Aghaei,S Sedighi,N Behnam Pour,SH Hezar Khani
Tehran University Medical Journal , 2012,
Abstract: Background: Low bone mass is a serious health problem mostly seen in postmeno-pausal women with rheumatoid arthritis. The purpose of this study was to determine the prevalence of osteoporosis and some related risk factors in postmenopausal women with rheumatoid arthritis.Methods: The data for this descriptive analytical study was extracted from the medical records of 98 postmenopausal women with rheumatoid arthritis who had attended the 5th of Azar Teaching Hospital affiliated to Gorgan University of Medical Sciences, in Iran, in 2009.Results: The mean durations of menopause and rheumatoid arthritis were 9.39 and 5.13 years, respectively. The overall prevalence of osteoporosis was 13.3%. We found a significant correlation between age, disease duration, and duration of menopause with bone mineral density (P<0.05).Conclusion: Our results indicate a high prevalence of osteoporosis at the lumbar spine of postmenopausal women with rheumatoid arthritis.
QUALITY AND QUANTITY SURVEY OF HOSPITAL WASTEWATERS IN HORMOZGAN PROVINCE
Sh. Sarafraz, M. R. Khani, K. Yaghmaeian
Iranian Journal of Environmental Health Science & Engineering , 2007,
Abstract: Hospital wastewaters are one of the most contaminating wastewaters and need to be paid more attention due to containing infectious agents. In this study, which had been conducted in a period of one year, 7 public hospitals were selected out of 12 public hospitals in Hormozgan Province of Iran. For studying quality of wastewater in hospitals, both influent and effluent wastewaters of treatment plant, if any, were sampled once in each season and totally 30 mixed samples were obtained. In order to determine the quality of hospital wastewaters in all samples, parameters such as pH, BOD5, COD, TSS and temperature were measured. Results of investigation on annual water consumption indicated that average water consumption in hospitals of the province was 194m3/d., considering water-to-wastewater conversion ratio of 0.8 and green yard ratio of 0.3. Wastewater production rate had been estimated to be 47m3/d and 0.362 m3/d.bed. Results indicated that in 7 hospitals of Hormozgan province, mean values of BOD5 ,COD ,TSS in raw wastewater were 242.25 mg/L, 628.1 mg/L and 231.25 mg/L, respectively, pH=7.42 and temperature=30.17 oC. In Khalij-e-Fars hospital which had wastewater treatment plant, values of these parameters in effluent were 12.53 mg/L and 51.7 mg/L, 19.68 mg/L, respectively, with pH=7.39 and temperature=26.1 oC. Comparison between values of influent and effluent wastewaters indicated that in understudy cases, contamination rate was higher than determined limits, as compared to environmental standards of the country and it was necessary to establish appropriate treatment plants in these units.
Determination of prevalence of perioperative myocardial infarction in 300 CABG operations in cardiovascular surgery ward of the Imam Khomeini Hospital from 15.11.1376 until 1.9.1377
Mir Khani SH,Foroozan Nia S.Kh
Tehran University Medical Journal , 2000,
Abstract: The most common cardiovascular surgery in the world and Iran as well, is CABG. One of the most important post-operative complication of this operation, that increase morbidity and mortality, is peri-operative MI. Incidence of peri-operative MI in CABG operations is between 2.5 to 5.5%. In this study we determined the prevalence and incremental risk factors of peri-operative MI in 300 consequative CABG operation, in the Imam Khomeini hospital. Diagnostic criteria for peri-operative MI were positive ECG finding (New and persistent Q.wave) and positive CPK-MB (Serum level>100 unit) at 3 different time: 1) Just before operation in the ward, 2) Just after operation in the ICU, 3) First post-operation day (At 8 A.M). In 300 patients positive ECG findings were seen in 7% (21 cases), positive CPK-MB was 12.7% (38 cases) and both of them were positive in 5% (15 cases). Therefore the prevalence of peri-operation MI was 5% (15 cases). Incremental risk factors in the patients with peri-operative MI were history of diabetes mellitus, hypertension, hyperlipidemia, left main disease, and endarterctomy. Therefore because of high incidence of peri-operative MI in CABG operation we should try to change the risk factors and decrease the prevalence of this complication.
Cervicovaginal beta human chorionic gonadotropin as a marker for prediction of preterm delivery
S. Khani,SH. Torabizadeh,A.R. Khalilian,K. Abedian Pasgari
Journal of Mazandaran University of Medical Sciences , 2005,
Abstract: Background and purpose: New biochemical markers(Fibronection, esteriol, à- feto protein,…) to predict spontaneous preterm birth give a more precise and earlier diagnosis than the usual ones( previous history, risk scoring system,…) there are many women with no obvois risk factors who deliver prematurely. The main purpose of this study was to determine the relationship between preterm delivery and cervicovaginal beta human chorionic gonadotropin(beta- h.c.g) levels.Material and Methods: The study was a nested case control undertaken on 304 pregnant women attending the health centers of Sari, Mazandaran, Iran. Cervicovaginal (beta-h.c.g) titers were measured in 83 high risk women at 24-28 week’s of gestation. Based on getational age (GA) at delivery they allocated in case (GA<34 weeks) and control ≥37 weeks) groups. Beta-h.c.g levels were analyzed and compared in two groups. Odd’s ratioes were calculated..Results: 83(27.3%) high risk pregnant women were selected from a total of 304 participants. 36 ( 43. 37%)subjects delivered at or before 34 weeks of cervicovaginal beta h.c.g showed a range of 0-186 mIU/ml with an optimal cut- off value of 25, Odd’s ratio for gestational age <37 was 3.016 (CI= 1.12-8.06, 95%). There was a correlation between preterm delivery (gestational age<37) and cervicovaginal beta h.c.g titer in 24-28 weeks of gestation. Sensitivity, specificity, positive and negative predictive values of the test as a predictor of preterm delivery were 41.67%, 80.85%, 62.5%, and 64.41% respectively.Conclusion: A high sensitivity was not attained in this for the cervicovaginal secretions beta- hcg levels in order to predict preterm delivery, hence further investigation are required to elucidate all aspects of the subjects.
The Impacts of Ergonomic Aspects on the Quality  [PDF]
Reza Khani Jazani, Sajad Mousavi
Open Journal of Safety Science and Technology (OJSST) , 2014, DOI: 10.4236/ojsst.2014.41003
Abstract: In recent times, the relationship between quality and ergonomics discipline is a challenging topic. Although there are similarities and differences between these two areas, it is not so easy to describe the connection between these two issues. In this study by surveying several articles, different areas of ergonomics are divided into five categories including hardware ergonomics, environmental ergonomics, software ergonomics, work design ergonomics and macro ergonomics, then the impact on the quality of each of these areas will be discussed. Finally, the article concludes that, to reach an acceptable quality considering the ergonomic principles is an integral component of the organization policy.
The Conductivity of Indium Phosphide Irradiated by Fast Electrons  [PDF]
Sh. Sh. Rashidova
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.411183
Abstract:

In this work, studied electrical conductivity(s) and annealing of radiation defects in crystals of n-InP are irradiated by electrons energy of 6 MeV and doses of 1017 el/cm2 (centimeter) and 2 × 1017 el/cm2 (centimeter). It is shown that alongside point defects (in the form of complexes with impurity atoms in crystals of n-InP) also form the complex defects of the type of disordered areas, annealing of which proceeds at T > 300°C that binds accumulating radiation defects.

Evaluation of Response Surface Methodology in Dispersive Liquid-Liquid Microextraction for Lead Determination Using Ionic Liquids  [PDF]
Behrooz Majidi, Farzaneh Shemirani, Rouhollah Khani
American Journal of Analytical Chemistry (AJAC) , 2011, DOI: 10.4236/ajac.2011.28103
Abstract: This paper describes a dispersive liquid–liquid microextraction (DLLME) procedure using room temperature ionic liquids (RTILs) coupled with flame atomic absorption spectrometry detection with microsample intro-duction system capable of quantifying trace amounts of lead. In the proposed approach, ammonium pyr-rolidine dithiocarbamate (APDC) was used as a chelating agent and 1-hexyl-3-methylimmidazolium bis (trifluormethylsulfonyl)imid as an extraction solvent was dissolved in acetone as the disperser solvent. The binary solution was then rapidly injected by a syringe into the water sample containing Pb2+ complex. Some factors influencing the extraction efficiency of Pb2+ and its subsequent determination, including extraction and dispersive solvent type, pH of sample solution, concentration of the chelating agent and salt effect were inspected by a full factorial design to identify important parameters and their interactions. Next, a central composite design was applied to obtain the optimum points of the important parameters. Under the optimum conditions, the limit of detection (LOD) was 0.2 µg/L. The relative standard deviation (R.S.D) was 1.4% for 5 µg/L of Pb2+ (n = 7). The relative recovery of lead in seawater, blood, tomato and black tea samples was measured.
Consideration on Genetic Connectedness under an Animal Model by Computer Simulation
K. Radjabalizadeh,H. Khani
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.2736.2739
Abstract: Phenotypic expression of a trait is a function of both the genotype of the animal and the environment that influences it. Connectedness among management units is of concern in genetic evaluation. In this study, for considering effect of genetic connectedness effect on the genetic evaluation, comparisons of estimated evaluations and genetic parameters in two cases lack and un-lack (GC) have been written in the C++ language program by simulation method in sheep herds with consideration of natural conditions (fertility percent, mortality percent). It is argued that connectedness increases as the proportion of offspring from common sires. A high level of connections improved the accuracy of the genetic evaluation. Connectedness ratings were higher for highly heritable traits and lower for traits with low heritability.
Performance Analysis of a High Data Rate UWB-Dtr System in Dense Multipath Channels
Hassan Khani;Paeiz Azmi
PIER B , 2008, DOI: 10.2528/PIERB08021003
Abstract: In this paper, a high data rate Ultra-Wideband Differential Transmitted-Reference (UWB-DTR) system which is one of the best and simplest available TR scheme is analyzed over IEEE 802.15.3a Channel Model 1 (CM1). We show that these systems need equalization in high data rate mode of operation because in such a case harsh nonlinear inter symbol interference (ISI) exists and degrades performance severely. The performance of the DTR system in CM1 is derived both analytically and via simulations by taking into account noise, inter path/pulse interference (IPI), and ISI. Uniform approximation for ISI distribution is proposed for the first time which gives a closer approximation than Gaussian one. All simulation and analytical results are obtained for CM1 but generalization to other channel models is also possible.
Seasonal Change of Cold Hardiness in the Codling Moth, Cydia pomonella (Lepidoptera: Tortricidae)
Abbas Khani,Saeid Moharramipour
Pakistan Journal of Biological Sciences , 2007,
Abstract: To elucidate the relationship between diapause and cold hardiness, seasonal variations of supercooling point and low temperature survival of overwintering and non-diapausing larvae of codling moth were studied in two regions of Iran, Damavand and Karaj. In both regions supercooling point decreased gradually over the autumn. Supercooling point of field collected larvae in Damavand reduced from a mean value of -16.9°C in early September to -19.9°C in mid-October 2004. At the same time, supercooling point of overwintering larvae decreased from -19 to -21°C in Karaj. Supercooling point decreased gradually until mid-winter (January) in both regions and afterward increased gradually over the spring. Mean supercooling point for non-diapausing larvae was -13.4°C, which was significantly higher than that of overwintering larvae. A high coincidence was observed between decrease of supercooling point and increase of low temperature survival rate in the overwintering larvae. Survival rate at -20°C/24 h was lower than 20% in early autumn; that increased to upper than 50% during winter. Codling moth was shown to be a freeze susceptible and at the same time, a chill tolerant insect.
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