62 research outputs found

    The effect of occupational stress, psychological stress and burnout on employee performance: Evidence from banking industry

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    This paper presents an empirical investigation on the effects of occupational stress, psychological stress as well as job burnout on women’s employee performance in city of Karaj, Iran. The proposed study designs a questionnaire in Likert scale and distributes it among all female employees who worked for Bank Maskan in this city. In our survey, employee performance consists of three parts of interpersonal performance, job performance as well as organizational performance. Cronbach alpha has been used to verify the overall questionnaire, all components were within acceptable levels, and the implementation of Kolmogorov-Smirnov test has indicated that the data were not normally distributed. Using Spearman correlation ratio as well as regression techniques, the study has determined that while psychological stress influenced significantly on all three components of employee performance including interpersonal performance, job performance as well as organizational performance, the effect on job performance was greater than the other components. In addition, occupational stress only influences on organizational as well as interpersonal performance. Finally, employee burnout has no impact on any components of employee performance

    Improving Student’s Self-Efficacy and Perceived Susceptibility Toward Oral and Dental Health: A Randomized Controlled Trial

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    Objectives: We sought to assess the impact of educational intervention on female junior high school students’ perceived susceptibility and self-efficacy regarding oral and dental health. Methods: We recruited 100 female junior high school students (50 in intervention and 50 in control group) from Falavarjan city using multistage random sampling. A self-administered questionnaire was used to gather data about study variables. Students in the intervention group attended five 90-minute sessions designed to teach the students about dental hygiene. Results: We found no significant difference between the two groups with respect to the preintervention mean scores of knowledge, perceived susceptibility, and self-efficacy (p > 0.050). The postintervention mean scores in the intervention group were significantly higher than those in the control group (p < 0.050). Conclusions: Training plans with particular behavioral goals and good instructional strategies can be useful in empowering students toward dental health

    Dosimetric evaluation of scattered and attenuated radiation due to dental restorations in head and neck radiotherapy

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    Abstract In radiotherapy of head and neck cancer, the presence of high density materials modifies photon dose distribution near these high density materials during treatment. The aim of this study is to calculate the backscatter and attenuation effects of a healthy tooth, Amalgam, Ni-Cr alloy and Ceramco on the normal tissues before and after these materials irradiated by 6 and 15 MV photon beams, respectively. All measurements were carried out in a water phantom with dimension of 50 × 50 × 50 cm 3 with an ionization chamber detector. Two points before and four points after the dental sample were considered to score the photon dose. The depth dose on the central beam axis was explored in a water phantom for source to surface distance (SSD) of 100 cm in a 10 × 10 cm 2 field size. The percentage dose change was obtained relative to the dose in water versus depth of water, tooth, Amalgam, Ni-Cr alloy and Ceramco for the photon beams. The absolute dose (cGy) was measured by prescription of 100 cGy dose in the water phantom at depth of 2.0 and 3.1 cm for 6 and 15 MV photons, respectively. At depth of 0.6 cm, the maximum percentage dose increase was observed with values of 6.99% and 9.43%for Ni-Cr and lowest percentage dose increase of 1.49% and 2.63% are related to the healthy tooth in 6 and 15 MV photon beams, respectively. The maximum absolute dose of 95.58 cGy and 93.64 cGy were observed at depth of 0.6 cm in presence of Ni-Cr alloy for 6 and 15 MV photon beams, respectively. The presence of dental restorations can cause backscattering dose during head and neck radiation therapy. Introduction of compositions and electron density of high density materials can improve the accuracy of dosimetric calculations in treatment planning systems to deliver the relevant dose to target organ and reduce the backscattering dose in healthy tissues in the surrounding of tooth

    Effects of Intraluminal Vancomycin in Decreasing Central Venous Catheter Infection

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    Background: Central venous catheters (CVC) are important intravenous routes, that nowadays they can be used for various reasons including resuscitation management, intravenous feeding, chemotherapy drugs, and blood transfusions. Due to the special importance and increasing usage of these catheters lengthening the duration of these catheters are very important. Infections are the most common cause of removal of this catheter.Methods: In this prospective study (cohort), 80 patients with central venous catheter were divided into two groups. In the first group Vancomycin once per day injected inside catheter equal to their intraluminal volume and remained for 2 h, then catheter was aspirated and washed. But in control group catheter was washed only with normal saline. Finally, catheter infection rates in the two groups were compared.Results: In the group that used intraluminal Vancomycin, catheter infection was ‎observed in 3 cases and was confirmed by blood culture, but in none of them ‎catheter infection agent was not Gram-positive cocci.‎ In control group, 18 cases of catheter infection were confirmed by culture that in 16 cases were caused by Gram-positive cocci that in 14 cases catheter was removed, and in 2 cases of catheter infection, infectious agent was Staphylococcus epidermidis which catheter maintained with appropriate antibiotics.Conclusions: Use of the intraluminal Vancomycin significantly reduces the rate of infection and thus increase the survival rate of CVC

    The Effect of Ticlopidine on Early Arteriovenous Fistula Thrombosis: A Randomized Clinical Trial

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    Background: Arteriovenous (AV) fistula is the first choice of a long-term vascular access for hemodialysis, but there is a 20-30% probability of thrombosis in the 1st month after its creation. Ticlopidine is a potent drug, which inhibits both primary and secondary platelet aggregation. This study is performed to evaluate the effect of ticlopidine in the prevention of AV fistula.Methods: Totally 124 patients in need of an AV fistula were divided into two groups after creation of their fistula. In the first group, we prescribed ticlopidine for 62 patients, and in the second group, 62 patients received placebo. The two groups were compared to see if their fistulas are patent or thrombotic after 1 and 3 months.Results: Of the 62 patients who received ticlopidine, four had fistula thrombosis, while in 62 patients who received placebo, 16 had fistula thrombosis (P = 0.003). This shows the significant effect of ticlopidine in the prevention of thrombosis in AV fistulas. Also, we compared age, sex, and the fistula location in the ticlopidine and placebo groups, and these attributes had no significant difference between the two groups (P &gt; 0.050).Conclusions: Considering the significant value of ticlopidine in the prevention of AV fistula thrombosis, it can be recommended after the surgery if there is no contraindication for its use

    Recent progress in the intranasal PLGA-based drug delivery for neurodegenerative diseases treatment

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    One of the most challenging problems of the current treatments of neurodegenerative diseases is related to the permeation and access of most therapeutic agents to the central nervous system (CNS), prevented by the blood-brain barrier (BBB). Recently, intranasal (IN) delivery has opened new prospects because it directly delivers drugs for neurological diseases into the brain via the olfactory route. Recently, PLGA-based nanocarriers have attracted a lot of interest for IN delivery of drugs. This review gathered clear and concise statements of the recent progress of the various developed PLGA-based nanocarriers for IN drug delivery in brain diseases including Alzheimer’s, Parkinson’s, brain tumors, ischemia, epilepsy, depression, and schizophrenia. Subsequently, future perspectives and challenges of PLGA-based IN administration are discussed briefly
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