Monopole Antenna for WI-FI Applications

In this Paper, a monopole patch CPW fed Wi-Fi antenna is designed with complete mathematical calculations and the results are simulated using HFSS software with an operating frequency of 2.4nbsp GHz. The antenna has a low profile and is nearly is four times smaller in size than a conventional patch antenna. The designed antenna is compared with previous designed rectangular patch antenna [2] .Wi-Fi is a wirelessnbspnbspnbspnbspnbsp networking technology that allows computers and other devices to communicate over a wireless signal, it is also used to create a wireless LAN .Wi-Fi antenna are used at both 2.4GHz and 5 GHz. The Wi-Fi frequency is highest frequency on the mobile phone among all the application frequency. As the Microstrip patch antennas are small in size, light weight and integrated easily on device. The performance of the antenna is evaluated using ANSYS HFSS

Design of Rectangular Patch Wi-Fi Antenna using Coaxial Feed

In this Paper, a rectangular patch Wi-Fi antenna using coaxial feed is designed, with complete mathematical calculations and the results are simulated using IE3D software with an operating frequency of 2.4nbsp GHz. Wi-Fi is a wirelessnbspnbspnbspnbspnbsp networking technology that allows computers and other devices to communicate over a wireless signal, it is also used to create a wireless LAN .Wi-Fi antenna are used at both 2.4GHz and 5 GHz. The Wi-Fi frequency is highest frequency on the mobile phone among all the application frequency. As the Microstrip patch antennas are small in size, light weight and integrated easily on device. the antenna performance is measured on IE3D software and we get optimum result

Comparison of placental grading at different periods of gestation in PIH patients and their outcome

Background: The current study follows grannum grading of placenta. It is well known that there is accelerated placental maturation in PIH patients and the ultrasonic appearance of grade 3 placenta before 37 weeks may signify placental dysfunction and is associated with development of low birth weight babies, IUGR meconium stained liquor, low APGAR score. Hence this study was conducted to emphasize on placental grading at different periods of gestation to predict and prevent increased obstetric and fetal compromise and to compare the outcomes.Methods: Obstetric scans were performed in all PIH patients attending antenatal OPD and inpatients at ESIC and PGIMSR medical college, Bangalore to know the placental grading and biophysical profile. These women were followed till their delivery for obstetric and fetal outcomes.Results: Grade 3 placenta is seen in 17 patients in group 1(50%) and 39 patients (59%) in group 2. For statistical analysis grade 1 and 2 were combined and compared with  grade 3. P-value 0.198 which was not statistically significant. There was no statistically significant difference in age and gravidity between two groups. The medical disorders were more in group 2 i.e., between 37 - 40 weeks. The complications of PIH were also more in group 2. There were more number of LSCS (n=19 versus 14) in 34-36 weeks group which was not statistically significant. Fetal outcomes like IUGR and IUD were more in group 2 which was not statistically significant. The mean birth weight in group 1 was 2 kg as compared to 2.7 kg in group 2. All associated medical disorders were more in group 2.Conclusions: In hypertensive women there is accelerated placental maturation leading to maternal and fetal complications. Hence women with accelerated placental maturity in ultrasound should be closely monitored and appropriately managed. However, we recommend larger randomized studies are necessary

Prevalence of Psychological Distress Among Quarantined People in Trivandrum District During the COVID-19 Pandemic: A Cross-sectional Study

Background: Quarantine is considered the most effective way to reduce the transmission of an infectious disease. The outbreak of coronavirus disease-19 (COVID-19) in 2020 led to many people being quarantined at various locations. The literature shows that people who undergo quarantine face psychological problems, such as depression, anxiety and stress. The aim of this study was to estimate the prevalence of psychological issues among quarantined people during the COVID-19 pandemic. Methods: This cross-sectional study was conducted in Trivandrum, Kerala, India. Adults aged 18 years and above who underwent quarantine in the area of the Pangappara Medical Health Centre were included. A semi-structured questionnaire and the Depression Anxiety Stress Scale-21 were administered to those who had given their informed consent. Quantitative variables were summarized using mean, standard deviation, and categorical variables with proportions. Significance of association was tested using the chi-square tests. Results: There were 143 participants included in the study. It was found that 23.8% had depressive symptoms, 14% had anxiety symptoms and 16.8% had significant stress. People from the age group of 26-40 years (p = 0.017), people from the higher educated group (p = 0.010) and non-resident Keralites (Keralites who were residing elsewhere and returned to Kerala during the pandemic) (p = 0.041) had the highest prevalence of depressive symptoms. Conclusion: People who undergo quarantine face many psychological issues. The health care system should provide adequate psychosocial support to quarantined people suffering from psychological problems. Health care workers should undergo appropriate training to provide these supports

Mars Atmospheric and Climatic Survey System

Before Mars can be explored by humans, its extreme climate and environment must be investigated. This can be achieved through the deployment of weather station probes capable of measuring Martian air temperature, atmospheric pressure, relative humidity, and wind speed. The Mars Atmospheric and Climatic Survey System (MACSS) aims to collect this data, allowing predictive models of global climate patterns on Mars to be developed. These models will aid NASA in providing the needed knowledge to prepare for long-term exposure to the conditions on Mars. The probes are compact and lightweight; they have been designed to withstand Mars’ harsh environment: extreme temperatures, statically-charged dust particles, a thin atmosphere, and intense solar radiation. Considerations of deployment were also made, with the size and weight of each probe allowing for them to be deployed as-needed and as accessories in future missions rather than simultaneously in a single mission. With regards to components, solar panels are to supply the probes with primary power. Data would be collected by sensors and stored on a solid-state drive. A low-gain antenna would establish communication between the probes, NASA’s Deep Space Network, and Mars’ rovers and orbiters. This data can then be evaluated on Earth, allowing models of Martian climate to be formed. In order to demonstrate the feasibility of MACSS, a mockup was designed, simulating data collection in real time with Earth-equivalent components. With continued collaboration, MACSS and its probes can be further optimized for deployment to and longevity on Mars.https://scholarscompass.vcu.edu/capstone/1202/thumbnail.jp

Pediatric Acute Lymphoblastic Leukemia: Recent Advances for a Promising Future

Acute lymphoblastic leukemia (ALL) is the most common pediatric cancer and accounts for approximately 75% of all cases of childhood leukemia. Both diagnostic and therapeutic advances have been instrumental in improving the outcomes of once a dreaded disease. Currently, approximately 90% of the children treated according to risk-directed and response-adapted therapy will be long-term survivors. The use of pediatric protocols for the treatment of adolescent and young adults (AYA) has also resulted in significant improvements in their long-term survival. New therapies including tyrosine kinase inhibitors (TKIs), monoclonal antibodies and CAR T-cell therapy are changing the approach to therapy for relapsed or refractory disease. We are approaching a time where therapy for all patients will be personalized with the use of genome-based characterization of disease and incorporation of drugs against actionable targets, ultimately leading to improved clinical outcomes and decreased toxicity of therapy. Still, certain subgroups including patients with relapsed disease, infant ALL, and those with certain cytogenetic/molecular variants, remain challenging to treat. This chapter is an overview of the recent advances in the ALL disease biology, newly identified prognostic factors and an overview of emerging therapeutic options

KNOWLEDGE AND AWARENESS REGARDING ANTIBIOTIC PROPHYLAXIS FOR INFECTIVE ENDOCARDITIS AMONG UNDERGRADUATE DENTAL STUDENTS

ABSTRACTObjective: To evaluate the knowledge and awareness regarding antibiotic prophylaxis for infective endocarditis (IE) among undergraduate dentalstudents.Methods: A validated questionnaire of 16 questions, regarding the basic knowledge and awareness about antibiotic prophylaxis for the preventionof IE, was distributed among 100 students randomly belonging to final year and internship (5 year trainee) of the undergraduate dental program inSaveetha Dental College and Hospital, Saveetha University, Chennai. The data extracted were tabulated, statistically analyzed, and results obtained.Results were calculated on the basis of frequency and percentages using SPSS Version 20.0.thResults: About 73% of the students were aware of IE prophylaxis, and 40% of dental students were exposed to treating patients susceptible to IE.56% of participants answered that amoxicillin is the first line of antibiotic for IE prophylaxis and 59% replied 2 g PO 1 hr before the appointment isthe recommended regimen. 36% said that erythromycin is no longer recommended by American Heart Association for IE prophylaxis. However, onlyone-third of the participants knew about the cardiac conditions and dental procedures that require antibiotic prophylaxis for the prevention of IE.Furthermore, only 16% knew about the recommended dosage of clindamycin.Conclusion: This study revealed a reasonable knowledge and awareness about IE prophylaxis among undergraduate dental students but wasinadequate. Hence, this study emphasizes the need for improved education in the teaching curriculum for dental students regarding IE prophylaxis.A standard protocol regarding the training as well as preventive measures for IE should be formulated for the dental students and the knowledgeacquired must be transferred into practice.Keywords: Infective endocarditis, Prophylaxis, Antibiotics, Dental students, Knowledge