REVIEW ON THERMAL ENERGY STORAGE MATERIALS FOR SOLAR COOKING

In this 21st century world, the requirement for energy is very high and cooking is the important process for the people to prepare food. It consumes more share of energy in developing countries. So, there is a critical need for the invention or development of alternative, suitable and economical methods of cooking. To reach the demands for further need of energy, solar is the best energy source to accomplish the energy requirements with eco-friendly to nature. The solar thermal collectors using heat storage materials absorb the solar energy and delivers constant heat for the cooking application. This review covers the various solar cooking techniques with different heat storage materials

ARBAC Policy for a Large Multi-National Bank

Administrative role-based access control (ARBAC) is the first comprehensive administrative model proposed for role-based access control (RBAC). ARBAC has several features for designing highly expressive policies, but current work has not highlighted the utility of these expressive policies. In this report, we present a case study of designing an ARBAC policy for a bank comprising 18 branches. Using this case study we provide an assessment about the features of ARBAC that are likely to be used in realistic policies

Clinical study of multi nodular goitre in a rural hospital

Background: Worldwide, nodular goitre remains a problem of enormous magnitude affecting no less than 5% of the population. Neither a well formulated nor a simple procedure is available for the management of MNG. Hence the need for the present study. The aim was to study the various modes of presentation, the distribution with respect to age and sex, the usefulness of FNAC, and the complications of surgery.Methods: This was a prospective study of 50 cases of MNG during the period between April 2012 and March 2014, in Chennai medical college hospital with an adequate follow up to look for post op complications.Results: Majority of the patients were females with an M:F ratio of 15:1,with the commonest age group being 31-40 years. All patients presented with swelling in front of the neck, with other complaints being that of pain, discomfort, and features of hyperthyroidism in 6 patients. FNAC was done in all patients and was found to be 100% accurate. Majority of the patients were treated with total thyroidectomy followed by subtotal thyroidectomy. Complications included wound infection, post op bleeding and RLN palsy.Conclusion: FNAC is an invaluable and highly accurate tool in the diagnosis of MNG. Surgery - Total thyroidectomy was found to be an adequate and safe treatment for non- toxic MNG with minimal complications.

Optimized cluster head selection using krill herd algorithm for wireless sensor network

Wireless Sensor Network (WSNs) can perform transmission within themselves and examination is performed based on their range of frequency. It is quite difficult to recharge devises under adverse conditions. The main limitations are area of coverage, network’s lifetime and aggregating and scheduling. If the lifetime of a network should be prolonged, then it can become a success along with reliability of the data transferred, conservation of sensor and scalability. Through many research works, this challenge can be overcome which are being proposed and the network’s lifespan improved which can preserve the sensor’s energy. By schemes of clustering, a low overhead is provided and the resources are efficiently allocated thus increasing the ultimate consumption of energy and reducing interfaces within the sensor nodes. Challenges such as node deployment and energy-aware clustering can be considered as issues of optimization with regards to WSNs, along with data collection. An optimal solution can be gotten through evolutionary and SI algorithm, pertaining to Non-deterministic Polynomial (NP)-complete along with a number of techniques. In this work, Krill Herd Algorithm based clustering is proposed

Role of alcoholism in liver abscess

Background:This retrospective study was conducted on 108 patients to find the role of alcoholism in liver abscess. Methods:The present study was undertaken on patients both male and female admitted in surgical wards of Chennai medical college & hospital. 108 patients were taken up for the study from the surgical wards of the hospital over a period of 1½ year i.e., from January 2013 to June 2014.Results:The disease usually affects the males in the age group 25-55 years, alcoholism is found to be the chief predisposing factor. Following alcoholism, poor economic status & malnutrition also plays a vital role as predisposing factors in the formation of liver abscess. Among alcoholism also, consuming locally prepared alcohol plays a vital role, but the reason is still been unknown. Though Alcoholism is a predisposing factor, it has no role in the aetiology and the liver function tests also did not show much alteration. Improvement in radio diagnosis helps not only in diagnosis but also in the management. In complicated liver abscesses, the most common complication was found to be pleuropulmonary, followed by peritoneal and pericardial. With abscess remaining confined to the liver the case fatality rate is nil. Even in complicated cases, the case fatality rate is low. Comparison of the results of our study with various studies which are done all over the world are found be coinciding.Conclusion:From our study it was undoubtedly proved that alcoholism, mainly consuming locally prepared alcohol plays a major role as a predisposing factor for the formation of liver abscesses that is both amoebic as well as pyogenic liver abscess because of the adverse effects of alcohol over the Liver. It is also proven that Alcoholism is never an etiological factor for the formation of liver abscess.

Exploring a new security framework for future healthcare systems

The Internet of Things is driving impactful and significant changes in healthcare systems across the globe. The use of mobile and wireless technologies to support healthcare environments has enormous potential to transform healthcare. For example, healthcare data, which is considered to be very sensitive, must be securely accessed, processed and stored. However, digital healthcare IT platforms are increasingly coming under attack by malware such as Ransomware. In addition, there is now a need to integrate eHealth and mHealth mechanisms into national healthcare systems. New technologies, such as blockchain, are being used to address these issues. What is needed is a new framework which can use these technologies to secure healthcare. This paper proposes a new security framework that responds to these security concerns. The framework is then used to design an implementation framework with new mechanisms including Capabilities, Secure Remote Procedure Calls and a Service Management Framework

Securing future healthcare environments in a post-COVID-19 world: moving from frameworks to prototypes

The deployment of Internet of Things platforms as well as the use of mobile and wireless technologies to support healthcare environments have enormous potential to transform healthcare. This has also led to a desire to make eHealth and mHealth part of national healthcare systems. The COVID-19 pandemic has accelerated the requirement to do this in order to reduce the number of patients needing to attend hospitals and General Practitioner surgeries. This direction however has resulted in a renewed need to look at security of future healthcare platforms including information and data security as well as network and cyber-physical security. There have been security frameworks that were developed to address such issues. However, it is necessary to develop a security framework with a combination of security mechanisms that can be used to provide all the essential security requirements for healthcare systems. In addition, there is now a need to move from frameworks to prototypes which is the focus of this paper. Several security frameworks for eHealth and mHealth are first examined. This leads to a new reference model from which an implementation framework is developed using new mechanisms such as Capabilities, Secure Remote Procedure Calls and a Service Management Framework. The prototype is then evaluated against practical security requirements

Tuberculosis Medication Nonadherence—A Qualitative Case Study

India is grappling with the problem of controlling tuberculosis nearly for the past 50 years. The problem of nonadherence to treatment regimen has also worsened the situation of multidrug resistant tuberculosis (MDR-TB) in India. This article explores the factors behind nonadherence among erstwhile TB defaulters in a rural district in India. In-depth interviews with seven chronic defaulters and with healthcare professionals were conducted at a government-run Chest Clinic. In addition to in-depth interviews with defaulters and healthcare professionals, medical records and government orders related to TB control were examined extensively. Participants were also observed to understand their interaction with healthcare professionals and fellow patients, especially during drug delivery time. Qualitative content analysis is the most appropriate method to analyze the transcribed text and archival records. Qualitative content analysis brought out five major themes responsible for their past nonadherence behavior, namely, (a) Awareness about tuberculosis and treatment, (b) Symptom recognition and self-medication, (c) Family support, (d) Accessibility, and (e) Stigma. Findings are documented according to the major themes and documenting direct quotes from participants and with healthcare professionals wherever appropriate. This case study also provided context-specific recommendations to the healthcare professionals as regards the nonadherence behavior among TB patients. It is hoped these focused recommendations, albeit known to the healthcare professionals, would be extremely useful in making modifications to the existing program to tackle the nonadherence behavior

In vitro anticancer activity of Sargassum sp. polysaccharides against MCF-7 cell lines

1267-1273Seaweed polysaccharides are compounds with promising chemopreventive and chemotherapeutic activities. In this study, polysaccharides isolated from Sargassum seaweeds were tested for their efficiency in cancer therapy. Polysaccharides were isolated, purified, and characterized using nuclear magnetic resonance (NMR); and Fourier transform infrared (FT-IR) spectroscopic and matrix-assisted laser desorption ionization mass spectrometric (MALDI-MS). It was found that the polysaccharides from Sargassum sp. branches are sulfated galactose–fucose disaccharides and sulfated galactose monosaccharides attached to the main chain through (1–4) linkages. Further, the polysaccharides were tested for cytotoxicity and anticancer activity against human breast adenocarcinoma cell line (MCF-7) using the Annexin-V/propidium iodide (PI) staining method