Resolution of infertility following hydatid cyst removal: a case report

Introduction and importance: Human echinococcosis, also known as‘hydatid cyst,’ constitutes a zoonotic parasitic disease attributed to Echinococcus granulosus or Echinococcus multilocularis. Primary af ictions occur in the liver and lungs, whilst the implication of alternative organs remains infrequent. The clinical presentation can vary, and large cysts may cause compression symptoms and complications. This case involved a 21-year-old Palestinian female with three large hydatid cysts in the liver, causing compression of adjacent structures and unique clinical manifestations. Case presentation: A female aged 21 arrived with signs of heart palpitations, shortness of breath, tiredness, and pain in the right upper abdomen, alongside a background of infertility. During routine pre-IVF ultrasound, three liver hydatid cysts were unexpectedly found, leading to a referral to the surgical department. Laboratory tests and imaging con rmed this diagnosis. The surgery involved cyst aspiration, hypertonic saline injection, and marsupialization. Post-surgical complications were managed as they occurred. The symptoms lessened afterward, and a successful pregnancy was achieved 9 months post-surgery. Clinical discussion: Zoonotic infection by cystic echinococcosis (CE) primarily engages the liver and lungs. The progression of symptoms is contingent upon cyst placement and resultant pressure on adjacent tissues. Diagnosis requires imaging alongside serological assays, while large cysts necessitate surgical intervention. Conclusion: The presented case underscores the complexity of managing multiple extensive liver hydatid cysts, highlighting the necessity to consider hydatid disease amidst patients presenting with indeterminate symptoms, particularly within endemic zones. An extensive surgical strategy produced positive outcomes, illustrating the signi cance of prompt intervention for symptom alleviation and sustained patient health.

Mohamad  Banat Mohamad banat

Body image and identity: a look into select short stories of bhabendra nath saikia"

The human body has been theorized in many ways, including the entire notion of the woman as a human creation. It is generally agreed that this concept refers to our perceptions, thoughts, and feelings about our bodies, which influence our behaviour about our bodies. The article examines numerous authors whose individual genealogies meet on the common ground of identity theory and women's lives and is supported by a theoretical framework based on conceptions of identity, body-image and self-image in women and feminist discourse. This paper probes into the concepts of identity in women through the literary canvas of Dr. Bhabendra Nath Saikia and demonstrates the effects of body image and self-image on the development of identity. Of course, an extensive discussion of the short stories of Dr. Saikia is beyond the scope of this paper. The aim of this paper is to analyse the concepts through the two short stories short titled "Dhura Xaap" (ঢ োৰো সোপ 1958) and "Sringkhol" (শ ৃংখল, 1970) by Dr, Bhabendra Nath Saikia. The paper seeks to explore the concepts of self-image, identity and body image through three female characters ‘Chandrika’, ‘Janeki’ and ‘Ambika’.

Banani Das Banani das

Antitussive effect of aerial parts of caesalpinia pulcherrima l. by sulfur dioxide induced cough in rats

Study objectives: The study aimed to evaluate the antitussive effect of aerial parts of ethanolic extract of Caesalpinia pulcherrima (Caesalpiniaceae). Methods: In this study, cough was induced by the sulfur dioxide induction method. Four groups of animals were made, with six animals in each group, and all drugs were administered orally. Group I was used as a control, group II as a standard, and groups III and IV received 200 and 400 mg/kg Caesalpinia pulcherrima aerial parts extract. Results: Caesalpinia pulcherrima aerial parts (CPAP) extract suppressed cough. Doses of 200 and 400 mg/kg Caesalpinia pulcherrima aerial parts extract showed highly significant results compared to the standard at 60 and 90 min of drug administration. Conclusion: From the above results, it can be concluded that plants have significant activity in cough suppression.

Dr. Salman Ahmed Dr. salman ahmed

Human resource management - mind map on traditional functions of hrm

Human resource management refers to the process of employing people, training them, compensating, and developing policies and strategies to keep them (Storey, 2016). Personnel management is an administrative specialisation that focuses on hiring and developing employees to become valuable to the organisation (Bondarouk, Trullen, and Valverde, 2016). Management of personnel can be characterised as a satisfied workforce being achieved, used, and maintained (Sheehan, Garavan & Carbery, 2014). It constitutes an essential aspect of the management of employees in the organisation and their connection. According to Schroeder (2012, p.4), personnel management is achieved to help organisational, individual, and social goals, as the planning, organisation, offsetting, and maintaining of people. Vargas et al. (2018, p. 3052) add that personnel management is the element that primarily deals with human organisational resources. Management of personnel covers job, development, and compensation functions. In consultation with other departments, the personnel management performs these functions principally (Vargas et al., 2018, p. 3053)

Zamzam Abdelazim Zamzam abdelazim

Effect of culcasia falcifolia on the biogenic amine levels in the brain tissue of pentylenetetrazole induced seizure in mice

In the present study the effect of the ethanol extract of Culcasia falcifolia on the neurotransmitter levels were evaluated. Pentylenetetrazole (PTZ) (60 mg/kg body weight, i. p) was administered to all the groups of mice to induce convulsions. After observing the convulsion, all groups rats were sacrificed, whole brain was dissected out and separated the forebrain. The brain tissue was homogenized and then centrifuged. The aqueous phase was taken for the assay. The reading was obtained using spectroflurimeter. The result of the present study shows that the ethanol extract of Culcasia falcifolia at the dose of 200 and 400 mg/kg body weight significantly increased the level of inhibitory neurotransmitter GABA and also showed significant increase in the levels of dopamine, noradrenalin and serotonin when compared to seizure control group (PTZ treated group) and was almost equivalent to control group. The findings of the study showed that the extract at 200 and 400 mg/kg body weight significantly (p<0.001) increased the levels of GABA, dopamine, serotonin and noradrenaline. The ethanol extract of Culcasia falcifolia exerted antiepileptic activity by decreasing seizure susceptibility to pentylenetetrazole-induced seizure in mice due to restoration of GABA, serotonin, dopamine and noradrenaline concentration levels in mice brain.

Gracelyn Portia Gracelyn portia

Coping up with covid-19 in india: a new way of surviving indian hospitality industry

India's hotel and hospitality industry occupancy decreased significantly in the first quarter of 2020, as the outbreak of COVID-19 affects different segments of the market. The outbreak of the novel coronavirus (COVID-19) has inflicted a blow on industries around the world, but maybe none as devastating as hospitality and travel. Depending on the length of the pandemic, companies across the industry adjusted growth forecasts for 2020, estimated profits to be conservatively 40-50 percent lower than expected before the outbreak. The effect on hospitality demand is greater than many other sectors, but even among hotels, air and cruise ships, and restaurants it is varied. Hotels and airlines operate at half capacity, with both business and leisure travelers canceling scheduled trips and not arranging any for the near future.The present article aims to study some novel practices for the survival of hospitality industries once the lockdown is over.

Ketan Chande Ketan chande

Effect of beetroot juice supplementation on the physical and biochemical profiles of induced metabolic syndrome in rat

Beetroot is vegetable containing phytochemical ingredients with potent antioxidant, hypoglycaemic and anti-inflammatory properties. It is key drivers in the pathophysiology of some metabolic syndromes. Its effect on the progress of induced metabolic syndrome has, however, hardly been investigated. Thus, this study aims to determine the effect of beetroot extract on various biophysical components of metabolic syndrome in rat. Following ethical approval, 50 Wister albino rats were used in this study and divided into three groups: Group A: rats were put on a high-fat-high-fructose (HFHF) diet; Group B: rats were put on an HFHF + fresh beetroot extract while group C: rats were the control group and were given a normal diet. The animals’ body weights and fasting blood sugar were taken fortnightly. Five rats from each group were then sacrificed at weeks 4, 8, 12 and 16 and the following parameters were measured: liver volume, fasting lipid profile, hepatic transaminases and blood platelet level. Compared to the HFHF group, beetroot supplementation resulted in a significant attenuation of overall weight gain (56.91% vs. 34.51%; p < 0> 0.05). Beetroot supplementation further ameliorated the thrombocytopenia caused by an HFHF. Beetroot juice supplementation attenuated the attendant effects of induced metabolic syndrome which might contribute towards averting the consequential cardiovascular sequel. Thus, lifestyle modification comprising beetroot intake as a dietary supplementation may alleviate metabolic syndrome and may offer a potential non-medical adjunct in the routine management of metabolic syndrome.

Mediterranean Journal of Pharmacy and Pharmaceutical Sciences Mediterranean journal of pharmacy and pharmaceutical sciences

Effects of hypersaline conditions on the growth and survival of larval red drum-(sciaenops ocellatus)

Texas bays and estuaries experience salinity fluctuations (e.g., droughts, reduced freshwater inflows and hurricanes) caused by natural weather and climate change. This could have impacts on red drum Sciaenops ocellatus (Linnaeus) early life stages beacause red drum spend their early life stage at the shallow bays and estuarine waters of Texas Bay. The purpose of the present study is to evaluate the impact of high salinity concentrations on the survival, growth and development of red drum eggs and larvae. Red drum brood stocks were collected from wild stocks throughout the lower Texas coast and were held in hatchery tanks (13,250 L) until spawning. The water quality conditions were maintained at a salinity of 38ppt and seawater temperature of 25°C. The red drum eggs were hatched at a wide range of salinity treatments (28-48ppt). Egg hatch-out rates and larvae growth were reduced at the lowest (28ppt) and highest (48ppt) salinity treatments. Hypersalinity (≥ 40ppt) and a temperature of 25ºC affected the hatching success of red drum eggs. The percentage of egg hatching success and length of larvae were reduced in both lower (28ppt) and/or hypersalinity (48ppt). This study shows that red drum eggs can hatch within a wide range of salinities with best hatch-out and growth rates occurring between 33 – 43ppt. It also suggests that climate change that produces global warming can keep the increasing environmental salinity of the Texas bay which might have an impact on the development of the early stages of the red drum in their natural environment.

Irma Kesaulya Irma kesaulya

India’s trade growth: a comprehensive analysis of import and export

India’s economic system has undergone significant changes in recent years reflecting globalization and changes in national policies. This paper provides a comprehensive analysis of India’s economic growth, focusing on imports and exports. The study explores the key drivers of economic expansion, including trade liberalization, trade agreements, and technological advancement. It also explores the impact of international trade and geopolitical events on business models. It assesses the role of policy measures such as the Goods and Services Tax (GST), the Make in India initiative, and various free trade agreements in generating economic benefits. The paper also assesses the trade balance and its impact on India’s economic stability and growth. The paper concludes with recommendations for improving the market, including diversifying entrepreneurs, investing in infrastructure, and strengthening the domestic economy. The review provides insights to policymakers, businesses, and academics who want to understand and harness India’s economic potential in the global economy.

Dr Gedam Kamalakar Dr gedam kamalakar

Physical activity and physical literacy: the pharmacological benefits of exercise, a women’s perspective

The valuable effects of regular exercise for promotion of health and therapy of diseases were obviously evaluated. The notion that exercise can be considered as a medication has been hypothesized. The growing problems of obesity and non-communicable diseases have placed a great burden on public health experts to promote physical literacy and physical activity among the modern day population. Physical literacy and physical activity have become the cornerstones of women’s health. Women have certain special needs that includes reproductive health. Increased physical activity and maintaining normal body image and body weight will help a woman attain physical, mental and spiritual development. With the growing number of women with obesity and the implication of obesity as one of the main risk factors for non-communicable diseases like diabetes, hypertension, stroke and osteoarthritis, a knowledge and awareness about physical activity is essential. Thus, physical activity is a fundamental aspect of the improvement of motor skills and work performance, allowing a better healthy lifestyle. Physical exercise is effective to be measured as a drug, however, more care should be considered to the dosing and individual variations between genders.

Mediterranean Journal of Pharmacy and Pharmaceutical Sciences Mediterranean journal of pharmacy and pharmaceutical sciences

Awareness about special education in hyderabad

pecial Needs Education (SNE) highly plays a crucial for all those children and adults with disabilities. In this article, I aim to research the awareness levels of SNE in various schools and communities in the city of Hyderabad, India. A qualitative approach was taken for this purpose. My research also includes a case study of a special needs child along with his family and academic background, in order to know the degree of awareness among parents.

Husna habib Husna habib

Freedom from open defecation an empirical study from two adivasi villages

Background: Ending open defecation has been identified as a top priority for reducing global inequalities in water and sanitation (WASH). It is explicitly referenced in sustainable development goals (SDGs) target 6.2 and closely associated with more comprehensive efforts to end extreme poverty by 2030. Since 2000, the global rate of open defecation has decreased from 21% to 9% (0.7 percentage points per year). However, the 673 million people still practicing open defecation in 2017 were increasingly concentrated in a small number of countries, and these will need to be the primary focus of efforts to end open defecation by 2030. Objectives: To study the socio-economic background of Adivasis, to study the status of sanitation in rural areas, to examine whether economic conditions affect open defecation, to examine whether better sanitation facilities improve health conditions and to examine whether improved sanitation facilities impact the quality of life and thereby dignity of tribal women. Methods: Essentially it is an empirical study and a multi-stage random sample design was adopted. Data were collected from 120 sample households from two villages, i.e., Bandarigudem and Nadikudi of Khammam districts in Telangana State through a structured questionnaire. Statistical tools like frequency distribution, percentages, cross-tabulation with Chi-Square test, and a case study method were used. Results & Discussion: This paper found that 35% of Adivasis have health problems, and 73% said that they are getting treatment with RMP. 87% have toilet facility and more than 12% still defecate openly. 18.3% said that they faced different problems at open defecation, and 50% of women not using sanitary napkins. Nearly 90% of respondents wash their hands after toilets and coming from outside of the home. Ten per cent of respondents said that they do not have an awareness of sanitation. Therefore, the study confirmed that the sanitation facilities considerably made the women's dignity and quality of life better in the study area. Moreover, four case studies also focused on open defecation problems in the study area.

B Suresh Lal B suresh lal

The art of public speaking pdf

The Art of Public Speaking BY J. BERG ESENWEIN AUTHOR OF "HOW TO ATTRACT AND HOLD AN AUDIENCE," "WRITING THE SHORT-STORY," "WRITING THE PHOTOPLAY," ETC., ETC., AND DALE CARNAGEY PROFESSOR OF PUBLIC SPEAKING, BALTIMORE SCHOOL OF COMMERCE AND FINANCE; INSTRUCTOR IN PUBLIC SPEAKING, Y.M.C.A. SCHOOLS, NEW YORK, BROOKLYN, BALTIMORE, AND PHILADELPHIA, AND THE NEW YORK CITY CHAPTER, AMERICAN The Art of Public Speaking by Dale Carnagey (AKA Dale Carnegie) and J. Berg Esenwein 2 INSTITUTE OF BANKING THE WRITER'S LIBRARY EDITED BY J. BERG ESENWEIN THE HOME CORRESPONDENCE SCHOOL SPRINGFIELD, MASS. PUBLISHERS Copyright 1915 THE HOME CORRESPONDENCE SCHOOL ALL RIGHTS RESERVED TO F. ARTHUR METCALF FELLOW-WORKER AND FRIEND Table of Contents Page THINGS TO THINK OF FIRST--A FOREWORD IX CHAPTER I --ACQUIRING CONFIDENCE BEFORE AN AUDIENCE 1 CHAPTER II --THE SIN OF MONOTONY 10 CHAPTER III --EFFICIENCY THROUGH EMPHASIS AND SUBORDINATION 16 CHAPTER IV --EFFICIENCY THROUGH CHANGE OF PITCH 27 CHAPTER V --EFFICIENCY THROUGH CHANGE OF PACE 39 CHAPTER VI --PAUSE AND POWER 55 CHAPTER VII --EFFICIENCY THROUGH INFLECTION 69 CHAPTER VIII --CONCENTRATION IN DELIVERY 80 CHAPTER IX --FORCE 87 The Art of Public Speaking by Dale Carnagey (AKA Dale Carnegie) and J. Berg Esenwein 3 CHAPTER X --FEELING AND ENTHUSIASM 101 CHAPTER XI --FLUENCY THROUGH PREPARATION 115 CHAPTER XII --THE VOICE 125 CHAPTER XIII --VOICE CHARM 134 CHAPTER XIV --DISTINCTNESS AND PRECISION OF UTTERANCE 146 CHAPTER XV --THE TRUTH ABOUT GESTURE 156 CHAPTER XVI --METHODS OF DELIVERY 171 CHAPTER XVII --THOUGHT AND RESERVE POWER 184 CHAPTER XVIII --SUBJECT AND PREPARATION 199 CHAPTER XIX --INFLUENCING BY EXPOSITION 218 CHAPTER XX --INFLUENCING BY DESCRIPTION 231 CHAPTER XXI --INFLUENCING BY NARRATION 249 CHAPTER XXII --INFLUENCING BY SUGGESTION 262 CHAPTER XXIII --INFLUENCING BY ARGUMENT 280 CHAPTER XXIV --INFLUENCING BY PERSUASION 295 CHAPTER XXV --INFLUENCING THE CROWD 308 CHAPTER XXVI --RIDING THE WINGED HORSE 321 CHAPTER XXVII The Art of Public Speaking by Dale Carnagey (AKA Dale Carnegie) and J. Berg Esenwein 4 --GROWING A VOCABULARY 334 CHAPTER XXVIII --MEMORY TRAINING 343 CHAPTER XXIX --RIGHT THINKING AND PERSONALITY 355 CHAPTER XXX --AFTER-DINNER AND OTHER OCCASIONAL SPEAKING 362 CHAPTER XXXI --MAKING CONVERSATION EFFECTIVE 372 APPENDIX A--FIFTY QUESTIONS FOR DEBATE 379 APPENDIX B--THIRTY THEMES FOR SPEECHES, WITH SOURCE-REFERENCES 383 APPENDIX C--SUGGESTIVE SUBJECTS FOR SPEECHES; HINTS FOR TREATMENT 386 APPENDIX D--SPEECHES FOR STUDY AND PRACTISE 394 GENERAL INDEX 506

Kamal Singh Kamal singh

Comparative analysis of machine learning classification models in predicting cardiovascular disease

For a long time, cardiovascular diseases have been the leading cause of death worldwide. Machine learning has found significant usage in the medical field as it can find patterns in data. Classification models can help cardiologists to diagnose heart diseases and minimize misdiagnosis accurately. In this paper, we explored a dataset related to heart disease and compared the accuracy of 43 machine learning classification models. The dataset for this research was downloaded from Kaggle; it contained 1190 observations, 11 features (age, sex, chest pain type, resting blood pressure, serum cholesterol, fasting blood sugar, resting electrocardiogram results, maximum heart rate achieved, exercise induced angina, oldpeak, the slope of the peak exercise ST segment) and a binary target variable (no heart disease or observed cardiovascular disease). For data exploration, preprocessing, training, testing, and predictor importance analysis, we used MATLAB R2004a software and the Classification Learner app included in this software. Before training machine learning classification models, we divided the dataset into a training set (90% of observations) and a test set (10% of observations). To prevent overfitting during the training of classification models, 10-fold cross-validation was used. The result showed that the best accuracy was reached with an optimized ensemble classification model (validation accuracy: 0.9262 and test accuracy: 0.9580). After calculating the permutation importance of each feature, we observed that the most important feature among all 11 features was the slope of the peak exercise ST segment.

Ladislav Végh Ladislav végh

Correlation between chest ct severity scores and the clinical parameters of adult patients with covid-19 pneumonia

Purpose. Our aim is to correlate the clinical condition of patients with COVID-19 infection with the 25-point CT severity score by Chang et al. (devised for assessment of ARDS in patients with SARS in 2005). Materials and Methods. Data of consecutive symptomatic patients who were suspected to have COVID-19 infection and presented to our hospital were collected from March to April 2020. All patients underwent two consecutive RT-PCR tests and had a noncontrast HRCT scan done at presentation. From the original cohort of 1062 patients, 160 patients were excluded leaving a total number of 902 patients. Results. The mean age was 44.2 ± 11.9 years (85.3% males, 14.7% females). CT severity score was found to be positively correlated with lymphopenia, increased serum CRP, d-dimer, and ferritin levels (p < 0.0001). The oxygen requirements and length of hospital stay were increasing with the increase in scan severity. Conclusion. The 25-point CT severity score correlates well with the COVID-19 clinical severity. Our data suggest that chest CT scoring system can aid in predicting COVID-19 disease outcome and significantly correlates with lab tests and oxygen requirements.

Kamal Singh Kamal singh

Utilization of information communication technology for the improvement of personnel economics in the administration of public secondary schools in rivers state

This study investigated utilization of information communication technology for the improvement of personnel economics in the administration of public secondary schools in Rivers state. The study had two objectives, with corresponding research questions and hypotheses. A descriptive survey design was employed, and the population consisted of 11,258 secondary school teachers from 258 public senior secondary schools in Rivers state, with 4,127 males and 7,131 females. A sample of 383 teachers (163 males and 220 females) was drawn from 15 public senior secondary schools using the Taro Yamane Formula and a two-stage sampling technique of stratified and simple random sampling. Data was collected using a self-structured questionnaire titled "Utilization of Information and Communication Technology and Personnel Economics in Secondary School Administration." The questionnaire underwent face and content validation by three experts and demonstrated good reliability with a Cronbach Alpha coefficient of 0.82. Research questions were answered using mean and standard deviation, while inferential statistics utilized the z-test. The findings indicated a significant difference between male and female teachers in their perceptions of ICT utilization for teachers' supervision and evaluation, highlighting the potential for ICT to improve personnel economics in the administration of public secondary schools in Rivers state. Based on these findings, it can be concluded that implementing various ICT-based strategies such as developmental supervision, contextual supervision, clinical supervision, and collaborative forms of developmental supervision could enhance the effectiveness of teaching staff and overall school productivity in public secondary schools in Rivers state.

FXintegrity Publishing Fxintegrity publishing

Pharmacogenetic determinants of human liver microsomal aminopyrine metabolism and the role of cytochrome p450 2d6

Aminopyrine (AM) has been used as a model substrate for investigation of drug metabolism. The major metabolic route is N-demethylation that was confirmed in liver microsomes. The aim of the present study was to identify the human cytochrome P-450 enzyme (CYP) mediating the N-demethylation of 4-di-methylaminoantipyrine (4-DMAA) to 4-methylaminoantipyrine (4-MAA). The contribution of human CYP to the metabolism of (4-DMAA) to (4-MAA) in human was investigated using virus expressed human CYP, human liver microsomes with chemical inhibition studies. The substrate of 4-dimethylaminantipyrine was employed at different concentrations (11.5, 23, 46, 115 and 230 µmol per l) with varying concentrations of selective inhibitors of CYP (CYP1A2), (CYP3A4), (CYP2C8),(CYP2A6), (CYP2D6), (CYP2C19) and (CYP1A1). 4-DMAA and 4-MAA were analysed by HPLC and enzyme kinetic parameters (Km and Vmax) were calculated from the concentration data. The transformation of 4-dimethylaminoantipyrine to 4-methyaminoantipyrine by microsomes prepared from baculovirus-expressed human CYP was pronounced with CYP2D6. The metabolism of 4-dimethylaminoantipyrine was inhibited by 60.0% and 55.17% by a concentration of 100 µmo per l of the known CYP2D6 inhibitors quinidine and moclobemide. The corresponding Ki values were 0.050 and 0.11 mM, respectively. The corresponding IC50 values were 0.06 and 0.13 mM, respectively. The enzyme CYP2D6 apparently has an important role in N-demethyl-ation of 4-dimethylaminoantipyrine.

Mediterranean Journal of Pharmacy and Pharmaceutical Sciences Mediterranean journal of pharmacy and pharmaceutical sciences

Effect of pranayama on type 2 diabetes on metropolitan people

The purpose of the study was to find out the effect of pranayama on type-2 diabetes on metropolitan people. In the present study researcher wants to observe the effect of pranayama on type 2 diabetes on metropolitan people and to develop a specific package for type 2 diabetes. For this purpose researcher collect 60 sample from nearest diabetic Clinic and Hospital in the city and it is randomly divided into two groups one is experimental and another is control group. In the study researcher used bio-chemistry lab tools. In the study research design used Pre-test, post-test control-experimental group and researcher used two variable type 2 diabetes as dependent and pranayama used as independent variable and in the study there was significant effect of yogic practices on type 2 diabetes.

Shekhar Boro Shekhar boro

Experimental investigation of passive flow control on bluff bodies

Flow control techniques are broadly classified into two types 1.passive control 2.active control. Present paper discuss about the experimental investigation of flow control using passive method on bluff body. Authors also explains about the various flow control techniques used in bluff body aerodynamics. Experimental setup consists of L m span and diameter d of cylinder model. The next model is having strip of cross section 0.01d dia is placed on the cylinder along the span wise distance with equal polar distance around 30o. both the models were kept between four walls in a Reynolds number ranging from 10000 to 15000. The results show that the Cp values changes according to the changes in cylinder roughness.

Boopathy Govindarajan Boopathy govindarajan

Synthesis, characterization and dielectric properties of k1-xnaxnbo3

The samples of K1-xNaxNbO3 (X=0.4, 0.2, 0) ceramics (PSN) have been prepared by the conventional solid state reaction method and sintering process. The prepared samples have been characterized by XRD. All the prepared samples show orthorhombic structure at room temperature. Dielectric and Electrical properties of PSN system have been investigated in the temperature range 450C-2450C, and at 1MHz frequency. It is observed that dielectric constant, loss tangent and electrical conductivity increases with increasing temperature. Near the transition temperature dielectric constant, loss tangent and electrical conductivity of these samples show anomalous behaviour with temperature.

Manish uniyal

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