97 research outputs found
Consequence of Meteorological Parameters on the Transmission of Covid-19
Coronavirus disease (COVID-19) was first detected in Wuhan, China in December 2019. The characteristics of the spread of COVID-19 infection from one person to another have led to an increasing number of infected cases and caused tremendous pressure around the world. The rapid spread of COVID-19 infection has made it a pandemic. In India, as of mid-May 2020, there were approximately 75,048 confirmed cases and 2,440 deaths due to COVID-19 alone. In order to break the COVID-19 chain, the Indian government decided to implement a lockdown, which was first implemented on March 23, 2020. The significant benefits of the lockdown have led to a reduction in air pollutants in cities around the world. The significant benefits of the lockdown have led to a reduction in air pollutants in cities around the world. The importance of particulate matter, temperature (°C) and relative humidity (%) to the spread of the COVID-19 virus and its correlation with the total number of cases (TC), active cases (AC), recovered cases (RC) and death cases (DC) Reference DEL will be discussed in detail in this chapter
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Envelopes Found Early After Acquisition Compared to Those in the Chronically Infected Partner Do Not Have Enhanced Alpha4 Beta7 Binding or Utilization
Recent Progress of Electrocatalysts and Photocatalysts Bearing First Row Transition Metal for Hydrogen Evolution Reaction (HER)
The design and modification of metal–organic complexes for hydrogen (H2) gas production by water splitting have been intensively investigated over the recent decades. In most reported mechanistic pathways, metal hydride species are considered as crucial intermediates for H2 formation where the metal present at the active site plays an imperative role in the transfer of electron and proton. In the last few decades, much consideration has been done on the development of non-precious metal–organic catalysts that use solar energy to split water into hydrogen (H2) and oxygen (O2) as alternative fossil fuels. This review discussed the design, fabrication, and evaluation of the catalysts for electrocatalytic and photocatalytic hydrogen production. Mechanistic approach is addressed here in order to understand the fundamental design principle and structural properties relationship of electrocatalysts and photocatalysts. Finally, we discuss some challenges and opportunities of research in the near future in this promising area
Aeropalynology of Parthenium hysterophorus L. in Relation to Meteorological Parameters from Srinagar Valley of Garhwal Himalaya, Uttarakhand
Parthenium hysterophorus (congress grass) is a harmful weed and its pollen grains are important allergens. Due to its minute size and allergenic activity, this particular type of pollen is selected for the study. The aeropalynological survey was conducted for the year 2019 at Chauras Campus, Hemvati Nandan Bahuguna Garhwal University, Srinagar, Uttarakhand. It is located on the right bank of the Alaknanda river (30°13’35.81”N & 78°48’11.05”E; 560 m amsl). A Rotarod sampler was used for air sampling. The maximum pollen count was observed in July. To evaluate the correlation matrix in R software, correlations (Pearson’s and Spearsman’s) between pollen count and meteorological parameters have been calculated. Back trajectory analysis has also been done using NOAA HYSPLIT MODEL
The prevalence of hypertension among young adults in a rural population of North India
Background: Most of the studies on hypertension provided the data on older age group. Most of the times, younger population remains unaddressed as they are assumed to be at a lower risk of developing the disease. So, the study on prevalence of hypertension among younger age group and their socio-demographic variables provides the guide for requirements of any intervention. Objective of present study is to estimate the prevalence of Hypertension among young adults in a rural population of central India.Methods: We collected data on socio-demographic characteristics and hypertension status from 1061 subjects aged 18–40 years. Relevant clinical parameters were collected (blood pressure recordings and anthropometric measurements).Results: Hypertension was detected in 188 of the 1061 subjects (17.7%). Prevalence among men was higher (18.8% compared to 15.2% among women). A total of 40.2% of the subjects was found to have pre-hypertension. Higher prevalence of hypertension was seen among those with a history of smoking.Conclusions: Most of the young adults with raised blood pressure were previously undiagnosed. A large number of subjects had prehypertension. Their early identification facilitates early, active management of blood pressure and formulation of preventive strategies thereby decreasing morbidity and mortality due to cardiovascular diseases and hypertension.
Nanocavity-mediated Purcell enhancement of Er in TiO thin films grown via atomic layer deposition
The use of trivalent erbium (Er), typically embedded as an atomic
defect in the solid-state, has widespread adoption as a dopant in
telecommunications devices and shows promise as a spin-based quantum memory for
quantum communication. In particular, its natural telecom C-band optical
transition and spin-photon interface makes it an ideal candidate for
integration into existing optical fiber networks without the need for quantum
frequency conversion. However, successful scaling requires a host material with
few intrinsic nuclear spins, compatibility with semiconductor foundry
processes, and straightforward integration with silicon photonics. Here, we
present Er-doped titanium dioxide (TiO) thin film growth on silicon
substrates using a foundry-scalable atomic layer deposition process with a wide
range of doping control over the Er concentration. Even though the as-grown
films are amorphous, after oxygen annealing they exhibit relatively large
crystalline grains, and the embedded Er ions exhibit the characteristic optical
emission spectrum from anatase TiO. Critically, this growth and annealing
process maintains the low surface roughness required for nanophotonic
integration. Finally, we interface Er ensembles with high quality factor Si
nanophotonic cavities via evanescent coupling and demonstrate a large Purcell
enhancement (300) of their optical lifetime. Our findings demonstrate a
low-temperature, non-destructive, and substrate-independent process for
integrating Er-doped materials with silicon photonics. At high doping densities
this platform can enable integrated photonic components such as on-chip
amplifiers and lasers, while dilute concentrations can realize single ion
quantum memories.Comment: 5 figure
International Health Security: A Summative Assessment by ACAIM Consensus Group
International health security (IHS) encompasses any natural or anthropogenic occurrence that can threaten the safety of human health and well-being. The American College of Academic International Medicine IHS Consensus Group (ACAIM-CG) developed a summative assessment highlighting the main issues that can impact IHS including emerging infectious diseases; chronic health conditions; bioterrorism; planetary changes (volcanic eruptions, earthquakes, wildfires, and climate change); nuclear incidents; information and cyber health; industrialization; globalization; pharmaceutical production; and communication platforms (social media). These concerns can directly and indirectly impact IHS both in the long and short term. When considering IHS, we aim to emphasize the utility of applying a predefined framework to effectively approach health security threats. This framework comprises of prevention, detection, assessment, reporting, response, addressing needs, and the perpetual repetition of the above cycle (inclusive of appropriate mitigation measures). It is hoped that this collective work will provide a foundation for further research within the redefined, expanded scope of IHS
Comparison of the Metabolic Effects of Ritonavir-Boosted Darunavir or Atazanavir Versus Raltegravir, and the Impact of Ritonavir Plasma Exposure: ACTG 5257
Background. Metabolic effects following combination antiretroviral therapy (cART) vary by regimen type. Changes in metabolic effects were assessed following cART in the AIDS Clinical Trials Group (ACTG) A5257 study, and correlated with plasma ritonavir trough concentrations (C24)
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