TRIPLE-BAND STUB LOADED PATCH ANTENNA WITH HIGH GAIN FOR 5G SUB-6 GHZ, WLAN AND WIMAX APPLICATIONS USING DGS

Microstrip antennas have become ubiquitous in today's wireless communication world due to their low profile, low cost, and simplicity in fabricating on circuit boards. However, poor performance characteristics, such as limited bandwidth, low power handling capabilities, and low gain, limit their applicability in various instances. Path loss will be substantial in 5th generation (5G) wireless communication due to the utilization of high-frequency bands. A high-gain antenna with a small size is necessary to address this issue. A compact tri-band, slotted monopole antenna with high and consistent gain employing a defected ground plane structure (DGS) has been investigated and implemented in this study. This proposed antenna uses three inverted L-shaped stubs connected to the radiating element to cover the desired bands while keeping the antenna size small. The designed antenna has two key characteristics: (i) wide bandwidth and (ii) reasonable gain. The antenna covers 2.45 and 5.6 GHz WLAN, 2.4 GHz Wi-Fi, 2.5 and 5.2 GHz WiMAX and 3.7 GHz Sub-6 GHz of 5G for mobile communication. The overall substrate size of the antenna is 30 × 17 × 1.6 mm3and the electrical dimensions are 0.49 λL × 0.28 λL ×0.026 λL, where λL is the free space wavelength at 2.45 GHz. The measured reflection coefficient (S11 < -10dB) covers 2.4 - 2.52 GHz (bandwidth 112 MHz) and 3.4 - 4.1 GHz (bandwidth 700 MHz) and 5.2 - 6.6 GHz (bandwidth 1359 MHz) with a fractional bandwidth of 5.1 % at lower frequency band, 18.6 % at mid frequency band and 23.7 % at high frequency band. A prototype antenna has also been developed using an inexpensive, low-profile 1.6 mm thick FR-4 (εr = 4.4) substrate. The measured peak gains achieved are 1.35 dB at 2.45 GHz, 2.55 dB at 2.65 GHz and 3.8 dB at 5.5 GHz. The simulated results have been validated against actual experimental measurements, and the outcomes are consistent and match with certainty. The proposed antenna design is very compact and easy to fabricate due to the absence of vias

A Novel Approach of Development of Web Pattern by Focusing on Web Structure Mining Techniques

The World Wide Web is a very useful and interactive resource of information like hypertext, multimedia etc. When we search any information on the Google, there are many URL’s has been opened. The bulk amount of information becomes very difficult for the users to find, extract and filter the relevant information, so that some techniques are used to solve these problems. The objective of current manuscript is focus on processing of structured and unstructured data mining. With the tremendous growth in website, web portal to provide downloaded data to the user. The semantic web is about machine-understandable web pages to make the web more intelligent and able to provide useful services to the users. The data structure definition and recognition is to estimate the accurate page ranking and to produce better result while searching operation with web data

Antenatal Screening for Hemoglobinopathies with HPLC

Introduction: Hemoglobinopathies are the most commonly encountered monogenic disorders of blood in Southeast Asia and Indian subcontinent. Screening of individuals at increased risk of being carriers for thalassemia and hemoglobinopathies, can identify couples with a 25% risk of having a pregnancy with a significant genetic disorder, for which prenatal diagnosis is possible. This study is done to know the prevalence of hemoglobinopathies and variant of haemoglobin using cation exchange high performance liquid chromatography (CEHPLC).Materials and Methods: 2 ml of venous blood was collected in EDTA vials from the pregnant mothers after informed consent. The blood was subjected to complete hemogram, peripheral blood smear and HPLC using Variant Hemoglobin Testing System (BioRad Laboratories). Beta Thalassemia short programme was used. Descriptive analysis was done and data is presented in numbers and percentages.Results: 467 blood samples from various ethnic groups were evaluated. 70 (14.99%) samples showed features of hemoglobinopathies by HPLC. There were 46 (9.85%) cases of HbE heterozygous,12 (2.57%) cases of HbE homozygous, 9(1.93%) cases of Beta Thalassemia Trait, 2 (0.43%) cases of double heterozygous and 1 (0.21%) case of Hb-D Iran.Conclusion: This study showed a high prevalence of hemoglobinopathies in antenatal mothers necessitating an appropriate screening strategy for antenatal mothers. We also concluded that HPLC is a sensitive technique for studying hemoglobinopathies during pregnancy and may be utilized for screening

Energy Expenditure and Nutritional Status of Sailors During One Month of Extensive Physical Training

The present study was conducted to determine nutritional requirements during extensive physical training by sailors of Indian Navy. A total of 37 sailors who were undergoing physical trainers course at training establishment of Indian Navy participated in this study. Energy expenditure, energy intakes, nutrient status and body composition changes during one month of training were recorded. Mean energy expenditure was found to be 4035 ±733 kcal/day and an average intake of 4478 ±340 kcal/day with sufficient amount of micro and macronutrients. The level of vitamin and minerals in blood and their excretion were in the normal range. Body composition was also maintained with a marginal decrease in body fat content. Increase in grip strength of passive hand was observed (Basal: 41.5 ± 8.8 kg, after 1 month of training:  46.5 ± 6.1 kg). Results indicate adequate nutritional support from the diet and positive effects of the training on healt

Aesthetic and emotional labour through stigma: national identity management and racial abuse in offshored Indian call centres

This article examines the emotional complexities and stresses associated with national identity management (accent modification, the use of western pseudonyms and location masking) and customer-instigated racial abuse in offshored Indian call centres. Drawing on 77 semi-structured interviews with frontline employees in Bangalore, the research reveals that although call centre agents can find identity management beneficial in easing customer apprehensions and in achieving organizational performance targets, such identity regulation can result in the experience of stress, role ambiguity and work alienation. The article demonstrates that employees need to manage the stigma relating to their ‘Indian’ identity in order to fulfil the challenges of aesthetic and emotional labour. Furthermore, the article explains how the mobilization of aesthetic labour through stigma management can intensify frontline worker experiences of emotional labour.</jats:p