Comparative Analysis between DVR and D - STATCOM for DFIG Based WECS Integrated to Grid

The instabilities in the power supply, such as voltage spikes, transients, and distorted waves, can cause consumer electronics to malfunction or even fail altogether. It is one of the biggest worries for gridconnected WECS in the present and future.In a variety of ways, specialized power electrical devices can improve power quality. These days, power applications make use of a broad variety of flexible controllers that take use of advanced power electronic components.In order to effectively minimize various forms of power quality concerns in a grid-connected wind energy conversion system, this article evaluates the reliability of two distinctive electrical devices, the Distribution Static Compensator (DSTATCOM) and the Dynamic Voltage Restorer (DVR). MATLAB/SIMULINK is used to examine the devices’ performance

Vanadium-catalysed novel oxidation of arylacetic esters for the synthesis of aryl-glyoxylic esters

Direct synthesis of arylglyoxylic esters in excellent yields from inexpensive arylacetic esters is realised for the first time by the oxidation of activated methylene using vanadium pillared clay as the catalyst and tert-butylhydroperoxide as an oxidant

Zinc oxide nanoparticles from leaf extract of Eclipta prostrata: Biosynthesis and characterization towards potential agent against film forming bacteria in metal working fluids

Industrially important metal working fluids are reported to be vulnerable to microbial growth, leading to loss of its working efficiency. The present study is dedicated towards the green synthesis of Zinc Oxide (ZnO) nanoparticles using Eclipta prostrata leaf extract and investigated for antimicrobial activity. Characterization studies using Scanning Electron Microscopy (SEM) and Fourier Transform Infrared spectroscopy (FT-IR) displayed the presence of agglomerated rod shaped ZnO nanoparticles with characteristic peak between 700 and 500 cm−1, respectively. Antimicrobial testing against gram-positive and gram-negative bacteria, as well as fungi, showed the ZnO nanoparticles' effectiveness. Against gram-positive bacteria, inhibition ranged from 0.48 to 1.51 at concentrations of 25 μl to 100 μl. Against gram-negative bacteria, inhibition ranged from 0.82 to 2.02, and against fungi, inhibition ranged from 1.20 to 2.34, all at the highest concentration tested. The results of the study indicate that the ZnO nanoparticles were effective against both fungi and bacteria, more effectively against gram negative bacteria. The results suggest that the green synthesized ZnO nanoparticles from Eclipta prostrata can be exploited to reduce the load of microbial contamination in metal working fluids

Biofertilizers for Sustainable Production of Strawberry: A-Review

Modern-day intensive strawberry cultivation relies on huge application of inorganic fertilizers, which not only disrupt the balance of nature but also reduce the economic efficiency; however, it cannot be eliminated at this time without drastically decreasing its production. Hence, to tackle these problems for sustainable production of crops, bio-fertilizers and organic manures are the best alternatives. The principle of this review is based on the goal of reducing synthetic fertilizers and other chemical input usage in strawberry production. The review discusses the diffuse nature of current reports in the literature concerning microbes as inputs towards a better use efficiency of fertilizers and the possibility of reducing the total amount of fertilizer usage and sustainable and quality strawberry production. Studies with bio-inoculants in combination with inorganic nutrients have proved that some inoculants such as Azotobactor, Azospirillum, Pseudomonas, Bacillus, Mycorrhizae fungi Aspergillus and Penicillium can increase the nutrient uptake of strawberry plant and increased fertilizers use efficiency. Biofertilizers in combination with inorganic fertilizers and organic manures have significant impact on plant growth (i.e., state some of the parameters here), yield (i.e., state some of the parameters here) and quality (i.e., state some of the parameters here). Likewise, organic manures improve soil physical conditions and supply all essential macro elements and microelements. These confirmations of concept studies will serve as the basis for vigorous future research into integrated nutrient management in strawberry

Stability indicating Rp-UPLC method development and validation for the simultaneous estimation of fosnetupitant and palonosetron in bulk and injection dosage form

A stability indicating UPLC method has been developed and validated for the simultaneous determination of fosnetupitant and palonosetron in bulk and in injection dosage form. This combination is used for the prevention of acute and delayed nausea and vomiting associated with initial and repeated courses of highly emetogenic chemotherapy for cancer. The chromatographic analysis was performed on an HSS, RP C18 column (2.1 x 100 mm, 1.8 µm) with an isocratic mobile phase composed of 0.25 M potassium dihydrogen orthophosphate buffer (pH 6.5), pH adjusted with dilute sodium hydroxide:acetonitrile (55:45 v/v), at a flow rate of 0.5 mL/min, and the eluents were monitored at an isosbestic point of 286 nm. The developed method was validated according to the ICH guidelines pertaining to specificity, precision, accuracy, linearity and robustness, and the stability indicating nature of the method was established by forced degradation studies. The retention times of fosnetupitant and palonosetron were observed at 1.390 and 2.404 min, respectively. The developed method proved to be accurate and precise. Linearity was established between 4.70 and 14.10 µg/mL for fosnetupitant and between 0.05 and 0.15 µg/mL for palonosetron. The LOD and LOQ were 0.115 and 0.385 µg/mL, respectively, for fosnetupitant, and 0.005 and 0.016 µg/mL, respectively, for palonosetron. Therefore, the proposed UPLC method was reliable, reproducible, precise and sensitive for the quantification of fosnetupitant and palonosetron