Thermal Energy analysis using TRNSYS in PCM Storage Tank

Energy is released from different processes into environment everyday across the globe. With the augmentation of the population it isn�t realistic to expect the energy demand to decrease, therefore currently available energy should be used more efficiently .In that sense, latent heat storage (LHS) has been popularized in last few decades because it can improve energy savings of thermal energy systems. The present paper contributes in showing the effects on system of including phase change materials(PCM) in a thermal energy system. System analyzed here is hot water tank for domestic use purposes. Analysis of system has been done using simulation program TRNSYS. Results come in a form of graphs that show charging and discharging times, quantities of energy stored, and temperature profile of watertank

Comparative Analysis of Hormonal and Basic Parameters between Women with Polycystic Ovary Syndrome (PCOS) and Non-Polycystic Ovary Syndrome (Non-PCOS) Individuals

This study aimed to investigate the characteristics of Polycystic Ovary Syndrome (PCOS) in comparison to non-PCOS women across different age groups. The data was collected from a sample of women, and their distribution among age groups revealed that the majority of PCOS women (39.6%) were in the 36-45 years age range, followed by 30.6% in the 26-35 years group, and 29.6% in the 15-25 years group. Subsequently, various parameters were compared between PCOS and non-PCOS women. The analysis of Body Mass Index (BMI) indicated that there was a marginal difference, with PCOS women having a mean BMI of 20.93±2.37 kg/m2, and non-PCOS women having a slightly higher mean BMI of 21.51±2.37 kg/m2. Furthermore, hormonal analysis revealed that PCOS women had significantly higher levels of luteinizing hormone (LH) with a mean of 13.32±2.25 compared to non-PCOS women with a mean of 7.23±2.14. Similarly, PCOS women showed elevated levels of follicle-stimulating hormone (FSH) with a mean of 6.43±4.34, while non-PCOS women had a mean of 4.43±2.53. Moreover, insulin levels were considerably higher in PCOS women with a mean of 19.52±2.06, in contrast to non-PCOS women with a mean of 6.43±3.53. These findings suggest that PCOS is associated with distinct hormonal and metabolic profiles, contributing to the understanding of this complex syndrome and emphasizing the importance of considering age and hormonal factors in its diagnosis and managemen

Bolton’s Anterior and Overall Tooth Size Discrepancy among different malocclusion groups in Chennai Population: An Epidemiological study

An observational and cross sectional study was done to determine whether there is a difference in intermaxillary tooth size discrepancies among the malocclusion groups and to determine the percentage of tooth size discrepancies outside 1 or 2 standard deviations from Bolton’s inter arch tooth size ratio. The study two hundred and thirty eight study models randomly selected from archives of the department of orthodontics, Tamil Nadu Government Dental College and Hospital, Chennai, Tamil Nadu. The samples were divided into three groups based on Angle’s classification of malocclusion – class I, class II Div I, and class III, coinciding with skeletal relationship, which was based on the steiner’s ANB angle: class I 05 and class III ANB <o. Each of these groups was again divided into two groups- males and females. The Bolton’s anterior and overall ratio was calculated for each group. The values were then compared for any possible gender difference and also among each group and with that of Bolton’s normal value. The study concludes that 1. There were no significant differences in the tooth size discrepancy between male and female. 2. The percentage of subjects with a deviation of more than 1 standard deviation for anterior and overall ratio was 68 and 57.1 respectively. 3. The percentage of subjects with a deviation of more than 2 standard deviation for anterior and overall ratio was 42.4 and 27.7 respectively. 4. Class III malocclusion group showed greater prevalence of tooth size discrepancies greater than 2 standard deviation compared to class II and class I. 5. There were no statistically significant differences in the Bolton anterior and overall ratios between the different malocclusion groups - class I, class II and class III. 6. The anterior ratio of class I and class III in the present study was significantly larger than the Bolton’s normal value for anterior ratio. Recent technological advances have allowed the introduction of digital callipers, which can be linked to computers for rapid calculation of the Bolton’s anterior and overall ratio and this computer program can virtually eliminate measurement transfer and calculation errors, compared with analysis that requires dividers, rulers and calculators. Few computerised methods like Quick Ceph, HATS, and OrthoCad needs special mention here

Chemistry research in India in a global perspective : a scientometrics profile

We measure India’s contribution to chemistry research in a global perspective. In the five years 2011-2015 Indian researchers have published 62,448 papers in 557 journals. In terms of % share, India (with 6.9% of the world’s publications) is behind only China (25%) and USA (17%). But only 0.86% of papers from India are among the top 1% of the most highly cited papers of the world, compared to 4.86% of papers from Singapore, 2.65% of papers from USA, 2.09% of papers from China, 1.87% of papers from the UK, 1.71% of papers from South Korea and 1.6% of papers from Germany. Papers from India are cited 14.68 times on average compared to cites per paper of 45.34 for Singapore, 30.47 for USA, 23.12 for China, 26.51 for the UK, 21.77 for South Korea and 24.77 for Germany. Less than 39% of papers from India are found in quartile 1 (high impact factor) journals, compared to 53.6% for China and 53.8% for South Korea. Percent share of papers in quartile 1 journals from India is lower than that for the world for all of chemistry and for each one of the eight categories, viz. analytical, applied, inorganic & nuclear, medicinal, multidisciplinary, organic, physical and electrochemistry whether one considers data for the entire five-year period or for 2015 alone. About 20% of Indian chemistry papers are in collaboration with international coauthors. Researchers from only 160 Indian institutions have published at least 100 papers (compared to 362 in USA and 399 in China) and these include 67 state, 14 central and 11 private universities, 27 institutions under the Ministry of Human Resource Development, 20 CSIR laboratories, seven Department of Atomic Energy institutions, and seven Department of Science & Technology institutions. About 40% of all Indian chemistry papers have come from public universities. Only three Indian institutions, viz Bhabha Atomic Research Centre, Indian Institute of Science and Indian Institute of Chemical Technology, have published more than 2,000 papers. None of the Indian universities has performed as well as leading Asian universities. Amrita Vishwa Vidyapeetham, a small institution with less than 200 papers, has performed reasonably well

The Role of the Hydrolysis and Zirconium Concentration on the Structure and Anticorrosion Performances of a Hybrid Silicate Sol-Gel Coating

In sol-gel chemistry, hydrolysis is the key step in the formation of the reactive hydroxide groups that are responsible for the formation of inorganic networks via the occurrence of condensation reactions. Though previous studies have investigated the effect of the hydrolysis conditions on the structure of organically modified silicates (ormosils), no study, to our knowledge, has investigated this variable on the structure of hybrid materials prepared by combinations of an ormosil and a transition metal (TM). Here, we propose to investigate this effect in a hybrid material composed of 3-trimethoxysilylpropylmethacrylate and a zirconium complex. To also highlight the effects of the precursor’s concentrations on the hydrolysis and condensation reactions of the hybrid materials, their relative content was altered along with the hydrolysis degree. The anticorrosion barrier properties were identified by characterisation of coatings deposited on AA2024-T3 substrates and correlation between the structure and the anticorrosion properties of the coatings were performed based on results obtained from structural characterisations (DLS, FTIR, 29Si-NMR, DSC, AFM and SEM) and corrosion testing (EIS and NSS). It is demonstrated that competition in the formation of siloxane and Si-O-Zr bonds takes place and can be controlled by the degree of hydrolysis and the concentration of the zirconium complex. This effect was found to dramatically alter the morphology of the coatings and their subsequent anticorrosion performances. At shortterm exposure times, it is found that the most condensed materials exhibited a higher corrosion resistance while over longer periods the performances were found to level. This article highlighted the critical impact of the hydrolysis degree and zirconium concentration on the connectivity of hybrid sol-gel coatings and the impact this has on corrosion performances

Efficient Microstrip Filter for IF band in DTH Downlink

149-155This paper presents an efficient microstrip trisection bandpass filter consisting of cross-coupled open-loop resonators for IF band filtering in Ku band Direct to Home (DTH) applications. The proposed filter has been designed and investigated using Advanced Design System (ADS) software. The filter provides fractional Bandwidth (FBW) of 13.84% at the centre frequency, which is much higher than most of the cascaded trisection filter designs previously reported in literature. The fabricated filter has been experimentally tested on aKu band DTH downlink and the effect of the filter on the received signal has been analysed

Correlation between Hand Tripod Pinch Grip and Handwriting Quality impact on Academic Performance- A Narrative Review

Background: Hand is an important structure used for reaching, holding object predominantly for that grasp and grip strength particularly tripod pinch grip strength is very essential and handwriting is one of the skilled fine motor movements in that deft handwriting which include particular speed with legible writing product is needed for students especially for their higher grades to achieve their best academic performance. Objective: Deft Handwriting is an essential functional skill that impacts on Academic performance and progress from primary school level to higher grades, mostly assumed that grasp and tripod pinch grip affects legibility, speed, yet research studies examining this relationship as correlation are limited. Method: We used Narrative review methodology to map existing research on tripod pinch grip and handwriting quality from the school-age children to higher grades and to identify gaps in the literature. Results: Ten articles met search criteria and were categorized by grasp patterns which mainly include tripod –dynamic tripod grip strength and handwriting performance in speed and readability and grasp kinetics and handwriting performance. Findings suggest an inefficient grasp can lead to decreased handwriting quality i.e legibility and speed. The current literature is inconclusive and several gaps were identified. Conclusion: Tripod pinch grip strength consider as an important since the thump ,index and middle finger its fine motor action , pressure and force exerted on the pencil since static and dynamic tripod pinch commonly used with students if the student lack of this factor finally end in the low academic performance which affect their higher grades, hence Early Analysis at the primary level and early intervention with maintain the higher grades consider as an essential factor reveals from the article. &nbsp