POLYANILINE MATRIX AS ACTIVE LAYER FOR SENSORS

Objective: Conducting polymer has gained importance due to its environmental stability, good conductivity, immobilization of bio component and gas sensing ability. Objective to Synthesis ofconducting polymers and to fabricate by galvano-static method for sensors. Material and method: All the chemical (Aniline and Hydrochloric acid)used in the investigation were analytical reagent grade The Method is electro polymerization was carried out by Galvanostatic technique. after synthesis, polymer coated electrodes were rinsed thoroughly in distilled water and dried in cold air and then used for subsequent characterization. Results: Potential-time curves suggesting that building up of the film proceeds according to the same reaction along the full thickness of the polymer. The SEM micrograph is fibrillar like structure good porosity, Conclusions: The PANI-HCl matrix have been successfully synthesized using Galvanostatic Method on ITO glass plate has uniform matrix and conductivity which has porous and fibriller good porosity and conductivity this active layer is suitable for immobilization of biocomponet for biosensors ,gas sensors and opticalsensor

Influence of Growth Regulators on Secondary Metabolites of Medicinally Important Oil Yielding Plant Simarouba glauca DC. under Water Stress Conditions

One year old seedlings of Simarouba glauca were subjected to water stress for 4, 8, 12 and 16 days. The foliar sprays of 50 ppm salicylic acid (SA) and 10 ppm Putriscine, Gamma amino butyric acid (GABA) and Abscisic acid (ABA) were applied before and after water stress. It was observed that polyphenols, tannins, alkaloid and flavonoid contents were increased with increasing water stress treatments. Foliar applications of growth regulators ameliorate water stress and exhibits induction of secondary metabolites like coumarins, sterols, xanthoproteins, cardiac glycosides and saponins. It was also noticed that foliar application of SA, GABA, ABA considerably increases all these secondary metabolites which will help to improve the medicinal potential of Simarouba glauca under water stressed condition

Ecological niche modeling of customary medicinal plant species used by Australian Aborigines to identify species-rich and culturally valuable areas for conservation

10.1016/j.ecolmodel.2011.07.005Ecological Modelling222183437-3443ECMO

Impact of COVID-19 on Cardiovascular Testing in the United States Versus the Rest of the World

Objectives: This study sought to quantify and compare the decline in volumes of cardiovascular procedures between the United States and non-U.S. institutions during the early phase of the coronavirus disease-2019 (COVID-19) pandemic. Background: The COVID-19 pandemic has disrupted the care of many non-COVID-19 illnesses. Reductions in diagnostic cardiovascular testing around the world have led to concerns over the implications of reduced testing for cardiovascular disease (CVD) morbidity and mortality. Methods: Data were submitted to the INCAPS-COVID (International Atomic Energy Agency Non-Invasive Cardiology Protocols Study of COVID-19), a multinational registry comprising 909 institutions in 108 countries (including 155 facilities in 40 U.S. states), assessing the impact of the COVID-19 pandemic on volumes of diagnostic cardiovascular procedures. Data were obtained for April 2020 and compared with volumes of baseline procedures from March 2019. We compared laboratory characteristics, practices, and procedure volumes between U.S. and non-U.S. facilities and between U.S. geographic regions and identified factors associated with volume reduction in the United States. Results: Reductions in the volumes of procedures in the United States were similar to those in non-U.S. facilities (68% vs. 63%, respectively; p = 0.237), although U.S. facilities reported greater reductions in invasive coronary angiography (69% vs. 53%, respectively; p < 0.001). Significantly more U.S. facilities reported increased use of telehealth and patient screening measures than non-U.S. facilities, such as temperature checks, symptom screenings, and COVID-19 testing. Reductions in volumes of procedures differed between U.S. regions, with larger declines observed in the Northeast (76%) and Midwest (74%) than in the South (62%) and West (44%). Prevalence of COVID-19, staff redeployments, outpatient centers, and urban centers were associated with greater reductions in volume in U.S. facilities in a multivariable analysis. Conclusions: We observed marked reductions in U.S. cardiovascular testing in the early phase of the pandemic and significant variability between U.S. regions. The association between reductions of volumes and COVID-19 prevalence in the United States highlighted the need for proactive efforts to maintain access to cardiovascular testing in areas most affected by outbreaks of COVID-19 infection