Preparation and Characterization of Nanozeolite NaA from Rice Husk at Room Temperature without Organic Additives

Nanozeolite NaA was synthesized by the hydrothermal method with silica extracted from rice husk as silica source. Amorphous silica with 87.988 wt%  SiO2 was extracted from rice husk ash by a suitable alkali solution. The effect of the crystallization time and the ratio of Na2O/SiO2 on the properties of the final product was investigated. The synthesized nanozeolite was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray (EDX) techniques, and Brunauer-Emmett-Teller (BET) method. Results revealed that the crystallization time and alkalinity have significant effects on the structural properties of nanozeolite. Nanocrystals NaA with crystal sizes ranging from 50 to 120 nm were synthesized at room temperature with 3 days aging, without adding any organic additives

Necessary to apply the principles of Andragogy in clinical education

Background: Clinical training of medical students is a set of practical and scientific training which aims, Created necessary conditions for knowledge, skills and attitudes of students to gain promotion skills. Objective: The purpose of this paper is to identify the strengths Andragogy in clinical teaching. Methods: A narrative review of published articles in Persian journals from 1380 to 1392, and magazine articles published in English from 2005 to 2013 Findings: Since the students are adults Therefore, the education of the students Principles taken from approach Andragogy utilized. These principles are: Need to learn, Direction learners, the learning experience, Readiness to learn, Orientation to learning, Motivation to learn. Conclusion: This paper describes the method described and explain the clinical training Andragogy principles, To examine ways to improve clinical education through applying the principles Andragogy discussed. Keywords: Andragogy; medical education; adult education; Learning Theor

SYSTEM IDENTIFICATION AND DE-CONVOLUTION OF A CLASS OF MULTI-CHANNEL WAVE PROPAGATION SYSTEMS FOR UNOBTRUSIVE CARDIOVASCULAR HEALTH MONITORING

The main goal of this thesis is to improve the cardiovascular health monitoring by developing a novel model-based blind system identification approach. This research lies on the core idea that the central aortic blood pressure (BP) waveform can be estimated from as few as two non-invasive circulatory signals. To achieve this goal, first, we formulated a physiological model for the class of multi-channel systems with non-invasive BP measurements and expressed it as a blind system identification problem. We verified this model for estimating the central blood pressure waveform from pulse volume records (PVR) signals from arm and leg, collected from 10 human subjects. The results showed that the proposed approach could estimate central aortic blood pressure waveform accurately. The average root-mean-squared error associated with the central aortic blood pressure waveform was 4.1 mmHg while the average errors associated with central aortic systolic and pulse pressures were 2.4 mmHg and 2.0 mmHg respectively. Afterward, we compared this method with a population-based technique to calculate cardiovascular risk predictors. First, we used the same approach to estimate the central blood pressure waveform from two non-invasive peripheral waveforms and then, calculated cardiovascular risk predictors. Experimental results obtained from 164 human subjects with a wide blood pressure range showed that this approach could estimate cardiovascular risk predictors accurately. Further analysis showed that the suggested approach outperformed a generalized transfer function regardless of the degree of pulse pressure amplification, but especially in high and low amplification ranges. Finally, a new closed-loop approach to input de-convolution in coprime multi-channel systems based on state estimation techniques is proposed. This approach is based on the idea that the unknown input signal in a multi-channel system may be regarded as a state variable to be estimated from multiple output signals of the system. The validity and potential of the approach were illustrated using the clinically significant case study of estimating central aortic BP waveform from two non-invasively peripheral arterial pulse waveforms. The proposed algorithm could reduce the root-mean-squared error associated with the central aortic blood pressure by up to 27.5% and 28.8% relative to two conventional central aortic blood pressure estimation techniques: open-loop inverse filtering and peripheral arterial pulse waveforms scaled to central aortic diastolic and mean pressures

Investigating the effect of nurses’ supportive and educative careon the quality of life in breast cancer patients referred for radiotherapy in Seyedoshohada hospitals in Isfahan in 1392

Background and aims: breast cancer is the most common cancer among women in Iran and many countries; but in recent years, survival rate was longer in patients and yet there is a greater emphasis on their quality of life. Therefore, this study was aimed to evaluate the effect of nurses’ supportive and educative care on the quality of life in breast cancer patients. Methods: This is a quasi-experimental, pre- and post- study. 45 patients with breast cancer referred to radiotherapy clinic of Seyedoshohada hospital were studied in 2013. The instruments used in this study were demographic and quality of life questionnaires from Backman institute completed before and after the training and support for patients. Questionnaires were completed and finally the obtained data were analyzed using SPSS software and statistical tests. Results: Based on the results obtained on the overall quality of life, it was observed that the average score for the quality of life in the sample was 51.73±13.91 before the intervention and 60.46±13.80 after the intervention (P<0.001). Also, the average scores in all four domains of quality of life after the intervention has increased, but the difference was significant only in two dimensions, physical and mental health (P<0.001). Conclusion: The results confirm the positive effect of nurses’ supportive and educative programs on the promotion of quality of life in patients with breast cancer. Therefore, planning and implementation of such programs on a broader basis and based on the educational and supportive patients' needs is recommended

The effect of breast self-examination training on knowledge, attitude and practice of women working in Shahrekord universities in 2010

Background and aim: Delay in diagnosis of breast cancer is still a main cause of death among disease women. However, preventive procedures to solve this problem are less than expectation. The success rate in the treatment of breast can be directly related to early diagnose and breast self –examination is one of the ways to detect the disease early. This study was aimed to examine the effect of education on knowledge, attitude and performance of employed women about breast self-examination. Methods: In this quasi-experimental study, 50 employee women randomly selected of Shahrekord University randomly. Participants during 2 weeks, in 2 sections and each session 2 hours performed self –examination. The rate of knowledge, attitude, and performance of participants before and after education using a questionnaires and check list were evaluated and compared. Results: Based on the results, the mean scores of subjects from 33.5±18.4 to 68.9± 9/2 increased (p<0.001). The mean scores for attitude increased from 74.5± 14.7 to 82.2±10.2 and the mean score for function from 41.5±30.8 before training to 84.8± 7.8 after training (p<0.001). Before training, %30 and after training, %84 of the wards under research breast self-examination performed. BSE McNamar test showed a significant difference before and after training breast self-examination (p<0.001). Conclusion: According to the present study, educational programs designed to enhance the knowledge, attitude and function and representation it through social media and health care centers is commend to provide opportunities for the use of screening methods

Effects of Biochanin A on Resistin, Adiponectin and some stress oxidative markers in normal and STZ- Induced Diabetic Rats

Background: Elevated serum level of adiponectin and insulin and decreased serum resistin can improve glucose metabolism. Biochanin A (BCA) is a flavonoid of Soybean that shows antioxidant properties. This study was aimed to examine the effect of BCA on FBS, oxidative stress and serum levels of adiponectin, resistin and insulin in rats with type 1 diabetes.Material and method: The rats were randomly divided into five groups (n=6). BCA was administered orally in doses of 10 and 15 mg/kg of body weight. Insulin, resistin and adiponectin were measured using ELISA kits. The activity of Gamma-Glutamyltransferase (GGT), alanine aminotransferase (ALT), aspartate aminotransferase (AST) and the levels of Glutathione (GSH) were examined.Results: The results showed that BCA treatment significantly reduced the FBS level in diabetic rats (p&lt;0.05). Serum insulin was significantly increased in the BCA treated diabetic rats (p&lt;0.05). Moreover, GGT activity and GSH was significantly increased in treated rats (p&lt;0.05). Our findings revealed that the administration of BCA significantly increased the serum adiponectin (p&lt;0.05). Additionally, serum resistin levels were remarkably decreased in treated rats (p&lt;0.05).Conclusion: Taken together, BCA represents a natural phytoestrogen that has an important role in improvement of glucose metabolism by regulating of adipokines secretion; also our findings revealed the beneficial effects of BCA against oxidative stress in diabete

The Versatility of 980 nm Diode Laser in Dentistry: A Case Series

Introduction: Laser surgery has been considered a popular alternative over conventional modalities in dentistry during the last few years. Among different types of lasers, diode lasers have gained special attention in oral soft tissue surgery.Case Reports: Five patients were referred to a private office. After careful evaluation of medical history and oral examination, oral diagnosis and treatment plan of each patient was established as follows: (1) A 21-year-old female with ankyloglossia (tongue-tie); (2) A 65-year-old female with a poor denture fit needing vestibuloplasty and frenectomy; (3) A 10-year-old male patient with pigmented gingiva in mandible and maxilla; (4) A 14-year-old female needing exposure of maxillary right canine for bracket bonding; and (5) A 25-year-old female patient who has a gingival maxillary frenum with a nodule. The treatment plan for all the patients was laser surgery with diode laser at 980 nm, in continuous mode.Results: All the patients experienced normal healing process with no postoperative complications. Favorable outcomes of laser surgery were observed on follow-up sessions.Conclusion: Considering the versatility of the 980 nm diode laser in oral soft tissue surgeries and the advantages of laser surgery, this study suggests the use of 980 nm diode laser in this regard

Plants used to decrease serum creatinine levels and contrast-induced nephropathy: A review article

Abstract:Background and aims: Contrast-induced nephropathy (CIN) is one of the most common reasons for acute kidney failure. Because of the increasing use of contrasts for computed tomography and angiography and coronary interventions, the incidence of CIN is on rise. CIN is a serious and common side effect ofthe use of contrasts. Despite taking of preventative measures, around 30-70 of patients are at risk of CIN. Researchers thus are seeking out appropriate approaches to prevent CIN. Positive effects of many medicinal plants, with antioxidant and anti-inflammatory properties and high efficiency and safety, in decreasing serum creatinine levels have been demonstrated. This study was conducted to collect evidence on the medicinal plants that are effective in decreasing serum creatinine levels and CINdevelopmentMethods: For this purpose, the key words contrast media, herbal, acute kidney injury, and nephropathy were used to retrieve relevant articles indexed in Google Scholar, Magiran, Elsevier, and PubMed. Then, the eligible articles were included in the review.Results: The results of studies are reported  in Table.Conclusion: Although some studies have suggested that some herbs have a toxic effect on kidney function, in the present review, most plants could help decrease serum creatinine levels and improve renal function