Economic design of X̅-control charts under generalized exponential shock models with uniform sampling intervals

Economic design of X̅-control chart was first presented by Duncan’s model (1956) model and then followed by Hu (1984) with fixed sampling intervals and failure mechanism of Poisson and Weibull distributions, respectively. For the sake of convenience, in many situations, it may be desirable to have frequency of sampling fixed with age of the system and to avoid certain drawbacks of the mentioned distributions. It appears that the Generalized Exponential model can be used as an alternative to the Poisson or Weibull models in many situations. We, here, proposed a cost model based upon Generalized Exponential with uniform sampling intervals

Economic design of X̅-control charts under generalized exponential shock models with uniform sampling intervals

Economic design of X̅-control chart was first presented by Duncan’s model (1956) model and then followed by Hu (1984) with fixed sampling intervals and failure mechanism of Poisson and Weibull distributions, respectively. For the sake of convenience, in many situations, it may be desirable to have frequency of sampling fixed with age of the system and to avoid certain drawbacks of the mentioned distributions. It appears that the Generalized Exponential model can be used as an alternative to the Poisson or Weibull models in many situations. We, here, proposed a cost model based upon Generalized Exponential with uniform sampling intervals

RELATION OF RELIGIOUS BELIEFS WITH ANXIETY AND DEPRESSION IN FAMILIES WITH MENTAL PATIENTS

Introduction: Religious beliefs as an important factor in mental health to be considered. The aim of this study was to determine the relationship between religious beliefs and anxiety and depression in family caregivers in families with patients with mental disorders. Method: This study is causal - comparative. The study population consisted of families with mentally ill patients were hospitalized in psychiatric wards. The sample consisted of 152 family. Research Environment was psychiatric wards in hospitals of Ahvaz Jundishapur University of Medical Sciences. Data Collection tools were demographic Characteristics, Hospital Anxiety and Depression Scale [HADS] and religious beliefs questionnaire. Descriptive statistics were used for to describe data and for determine the relationship between qualitative variables was used of X2, SPSS 22 software was used. Results: 63.8 percent of family caregivers were male and mostly aged between 30 and 50 years.48 percent of family caregivers has symptoms of anxiety and 67.3 percent have symptoms of depression. Significant relationship was observed between anxiety and religious beliefs [P- value = 0.002]. No significant relationship was observed between depression and religious beliefs [P- value = 0.417]. Conclusion: A religious belief is effective factor in the mental health of family caregivers and to help them be better able to take care of the patient. Whatever religious beliefs of family caregivers are stronger, their anxiety are less and the level of their mental health are more. Keywords: Religious beliefs, anxiety, depression, Family caregivers, patients with mental disorder

Seroepidemiology of rubella, measles, HBV, HCV and B19 virus within women in child bearing ages (Saravan City of Sistan and Bloochastan Province)

Present survey basically focused on women between 15-45 years of age resident in a town of Sistan and Baluchistan province named as Saravan city located in border of Pakistan-Iran in order to find out the seropositivity against the viruses in child bearing ages in the above stated under study community. This descriptive cross-sectional study was carried-out from 2001 up to 2002. Saravan town was divided into 4 geographical areas and each area was further sub-divided into 10 blocks and in each block 10 families were chosen randomly. In the next step by referring to each family from the chosen married women with specified age i.e., 15-45 years, 5 mL blood was collected. Serum was then separated and stored at -20°C before the assay. ELISA kit was employed to detect anti B19, anti rubella, anti measles, anti HBV and anti HCV antibody. Furthermore during samples collection a questionnaire filled for each woman under study. This study showed that 89.6% of women understudy were seropositive against measles, rubella (96.2%), B19 (59.2%), HCV (0.8%) and HBV (19.8%), respectively. According to the results of no serious problem with rubella in this area; But, about measles, the present immunity against measles in this area is insufficient. It seems that incidence of B19 infection in this region is same as other places in Iran. The rate of seropositivity against HBV and HCV indicated of these viruses circulating in the population in this area. © 2007 Academic Journals

Statistical Investigation of the Effect of Major Parameters of False Twist Texturing on the Dyeing Characteristic and Color Properties of Microfilament Polyester Yarn

Microfilament polyester yarns are one of the most important and widely used yarns in the textile industry and the fabrics produced from these yarns have a large consumption. One of the most important issues regarding fabrics made from Microfilament yarns is the issue of dyeing and dyeing properties of these fabrics. Among the concerns of DTY polyester yarn manufacturers are the conditions for producing and texturizing these fibers. Choosing the right range for each of the effective parameters in the false twist texturing machines will play a major role in the physical properties, dyeing Characteristic and color properties of the yarn produced. In this paper, we attempt to study the effect of the most important texturing parameters by false twist method: first heater temperature, draw ratio, D/Y rate and texturing speed on some of the most important color properties of microfilament polyester yarn that dyeing with dispersant dyestuff. These properties include color reflectance (% R), color strength (K/S), amount of dye absorbed ( ) and absorbance number (A). Experiments are designed using ANOVA and Response Surface Methodology (RSM) method. The effect of changes in the main texturing parameters on the color coordinates of the microfilament polyester yarn is studied. The POY yarn used in this study is polyester yarn with a count of 135 dtex and 144 filaments. According to the studies, the interaction between the first heater temperature and the D / Y rate as well as the interaction between the draw ratio and the D / Y rate will have the greatest effect on the color strength and color properties of the microfilament polyester yarn

Performance evaluation of a scoria-compost biofilter treating xylene vapors

The removal of xylene vapors was studied in a biofilter packed with a new hybrid (scoria/compost) packing material at various inlet loads (IL) and empty bed residence times (EBRT) of 90, 60, and 40s. The best performance was observed for EBRT of 90s, where a removal efficiency of 98% was obtained under steady state condition for inlet xylene concentration of 1.34 g m(-3), while a maximum elimination capacity of 97.5 g m(-3) h(-1) was observed for IL of 199.5 g m(-3) h(-1). Carbon dioxide production rates and the microbial counts for xylene-degraders followed xylene elimination capacities. Overall look to the results of this study indicates that the scoria/compost mixture could be considered as a potential biofilter carrier, with low pressure drop (here <4 mm H2O), to treat air streams containing VOCs

Neuroprotective Effects of Bone Marrow Mesenchymal Stem Cells on Bilateral Common Carotid Arteries Occlusion Model of Cerebral Ischemia in Rat

Cell therapy is the most advanced treatment of the cerebral ischemia, nowadays. Herein, we discuss the neuroprotective effects of bone marrow mesenchymal stem cells (BMSCs) on rat hippocampal cells following intravenous injection of these cells in an ischemia-reperfusion model. Adult male Wistar rats were divided into 5 groups: control, sham (surgery without blockage of common carotid arteries), ischemia (common carotid arteries were blocked for 30 min prior to reperfusion), vehicle (7 days after ischemia PBS was injected via the tail vein), and treatment (injections of BMSC into the tail veins 7 days after ischemia). We performed neuromuscular and vestibulomotor function tests to assess behavioral function and, finally, brains were subjected to hematoxylin and eosin (H&E), anti-Brdu immunohistochemistry, and TUNEL staining. The ischemia group had severe apoptosis. The group treated with BMSCs had a lower mortality rate and also had significant improvement in functional recovery (P<0.001). Ischemia-reperfusion for 30 min causes damage and extensive neuronal death in the hippocampus, especially in CA1 and CA3 regions, leading to several functional and neurological deficits. In conclusion, intravenous injection of BMSCs can significantly decrease the number of apoptotic neurons and significantly improve functional recovery, which may be a beneficial treatment method for ischemic injuries. © 2016 Bagher Pourheydar et al

Clinical presentation of coronary arteriovenous fistula according to age and anatomic orientation

Background: Coronary arteriovenous fistulas (CAVFs) are direct connections from one or more coronary arteries to cardiac chambers or a large vessel. They are mostly of congenital origin. The aim of this study was to describe clinical presentation and also delineate the course and management of CAVF. Methods: Clinical data, chest x-rays, echocardiographic and angiographic evaluation of 40 patients with congenital CAVF during 1990 to 2008 were reviewed retrospectively. Results: Seventeen patients were �20 years old (42.5) were mostly asymptomatic, and twenty tree cases were older than 20 years old (57.5), mostly symptomatic (P < 0.05). Twenty one (52.5) patients had pure CAVF and nineteen (47.5) patients with associated intarcardiac congenital heart disease (15) or acquired valvular and coronary arteries diseases (32.5). CAVFs mostly originated from left anterior descending artery (LAD) (42.5) and mostly drained into the main pulmonary artery (MPA) (35 ). Twenty-four patients underwent CAVF surgical ligation. From twenty-one patients with pure CAVF, eight (38) patients were complicated by congestive heart failure and aneurism formation of fistula. Conclusion: Unlike some previous reports, in our study, the most prevalent origin site for CAVFs was the left anterior descending (LAD). Most patients with CAVFs especially those who went first diagnosed before 20 years old were asymptomatic. On the other hand, as the continuous murmur is not always detected in children or infants, consequently, cases of spontaneous closure may remain undetected. All symptomatic and asymptomatic patients with moderate to severe shunting should be operated on and minimal morbidity and good surgical results could be expected

Quantitative trait loci and genes associated with salmonid alphavirus load in Atlantic salmon:implications for pancreas disease resistance and tolerance

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