Influence of spin fluctuations near the Mott transition: a DMFT study

Dynamics of magnetic moments near the Mott metal-insulator transition is investigated by a combined slave-rotor and Dynamical Mean-Field Theory solution of the Hubbard model with additional fully-frustrated random Heisenberg couplings. In the paramagnetic Mott state, the spinon decomposition allows to generate a Sachdev-Ye spin liquid in place of the collection of independent local moments that typically occurs in the absence of magnetic correlations. Cooling down into the spin-liquid phase, the onset of deviations from pure Curie behavior in the spin susceptibility is found to be correlated to the temperature scale at which the Mott transition lines experience a marked bending. We also demonstrate a weakening of the effective exchange energy upon approaching the Mott boundary from the Heisenberg limit, due to quantum fluctuations associated to zero and doubly occupied sites.Comment: 6 pages, 3 figures. V3 was largely expande

Ultrasound assisted esterification of Moringa oleifera oil and its optimization by central composite design

224-230The present work describes the esterification of Moringa oleifera oil (MOO) using ultrasound treatment at a frequency of 60 kHz. The influence of process parameters of esterification such as methanol to oil ratio, catalyst concentration and reaction time on acid value reduction have been analyzed by central composite design (CCD) of Response surface methodology (RSM). ANOVA table indicate the significance of methanol to oil ratio and interaction between catalyst concentration and ultrasonication time. Using Numerical optimization tool, the acid value is reduced to 3mg KOH/g of oil using 2 vol% conc. H2SO4, 0.4:1 volumetric ratio of methanol to oil in 60 min at 60°C. Meanwhile, the conversion of free fatty acid (FFA) into methyl ester is further confirmed with the Fourier Transform Infrared Spectroscopy (FTIR) analysis

Optimization of dye transfer inhibition properties of polyvinyl pyrolidine for reactive dye on cotton fabric

This study focuses on the optimization of the amount of dye transfer inhibition (DTI) agent in the in-wash liquor using response surface methodology. Polyvinyl pyrrolidone, one of the DTI polymers, has been used to analyse its dye transfer inhibition properties on reactive dyed cotton fabric against the commercial detergent. The box and Benkhen experimental design has been adapted to study the optimum concentration of DTI and washing condition for the better dye transfer inhibition. The CIELAB color difference (ΔE) and color strength (K/S) values are studied for the cotton fabric used in the in-wash liquor. The result shows that the higher the DTI polymer concentration the better is the dye transfer inhibition property. The performance of the DTI agent is majorly influenced by the surfactant present in the detergent powder due to its ionic nature. The influence of washing pH on the efficacy of the DTI is observed as minimal. The developed model shows higher values of R2 for the selected parameters, around 0.82 for color difference and 0.91 for color strength. The optimum values of process parameters for the improved performance of DTI polymer with minimum quantity are found to be DTI polymer concentration 0.24 g/l, detergent concentration 2.9 g/l, alkaline pH level in one liter of water, and 3% (owm) of reactive dye. The washing efficiency analysis shows that the stain removal percentage of detergent remains the same in presence of DTI polymer. The water hardness property has a major influence on the DTI performance. The environmental impact of the DTI polymer is found negligible, except the chemical oxygen demand

Trend analysis and variability of satellite-based soil moisture data for the Lower Bhavani basin, Tamil Nadu using Google Earth Engine

Soil moisture is a significant hydrological component that is dynamic in nature. The variation in soil moisture in the basin scale would affect the vegetation, ecology and environment. Soil moisture trend analysis aids in providing the variation of soil moisture over the basin. The present study aimed to analyse the soil moisture trend in Lower Bhavani basin, Tamil Nadu from 2003-2022. Satellite-based soil moisture Global Land Data Assimilation System (GLDAS) data was extracted from the Google Earth Engine (GEE) platform to analyse the variation and trend over the period of time. The highest and lowest soil moisture was observed during monsoon and summer months and its percentage variation was studied. Using Man-Kendall test and Sen’s slope, trend analysis was calculated for two decades (2003-2012 and 2013-2022). In 2003-2012, an increasing trend of soil moisture was observed during winter (October to February); from 2013-2022, an increasing trend was observed during both winter (October to February) and monsoon seasons (June to September). The remaining season did not follow any trend, and there was no decreasing trend in soil moisture. The trend analysis of the study will help to monitor and manage the environmental system across the Lower Bhavani basin

An Investigation into Cell Suspension Parameters of Moringa

The abstract presents an investigation into cell suspension parameters of Moringa, focusing on optimizing growth conditions for enhanced cell culture. Moringa, known for its nutritional and medicinal value, holds potential for various applications. This study delves into the effects of key parameters including growth media composition, pH levels, temperature, agitation, and inoculum density on cell suspension cultures of Moringa. Through systematic experimentation and analysis, the research identifies optimal conditions that promote cell growth, metabolite production, and biomass accumulation. The findings shed light on the intricate interplay between these parameters and their impact on cellular behavior. Furthermore, the study contributes to the broader understanding of plant cell suspension systems and their potential applications in biotechnology, pharmaceuticals, and agriculture. The insights gained from this investigation pave the way for scalable and sustainable cultivation of Moringa cells, fostering advancements in diverse sectors reliant on this remarkable plan

Coordination of Tissue Cell Polarity by Auxin Transport and Signaling

Plants coordinate the polarity of hundreds of cells during vein formation, but how they do so is unclear. The prevailing hypothesis proposes that GNOM, a regulator of membrane trafficking, positions PIN-FORMED auxin transporters to the correct side of the plasma membrane; the resulting cell-to-cell, polar transport of auxin would coordinate tissue cell polarity and induce vein formation. Contrary to predictions of the hypothesis, we find that vein formation occurs in the absence of PIN-FORMED or any other intercellular auxin-transporter; that the residual auxin-transport-independent vein-patterning activity relies on auxin signaling; and that a GNOM-dependent signal acts upstream of both auxin transport and signaling to coordinate tissue cell polarity and induce vein formation. Our results reveal synergism between auxin transport and signaling, and their unsuspected control by GNOM in the coordination of tissue cell polarity during vein patterning, one of the most informative expressions of tissue cell polarization in plants

NEERKURI BY SAGE THERAIYAR - A REVIEW ON SIDDHA WAY OF URINE EXAMINATION IN THE LIGHT OF CONTEMPORARY CLINICAL METHODS

The Siddha system is said to have emerged in antiquity, from the highly evolved consciousness of the Siddhars. The clarified intellect and heightened intuition of Sage Theraiyar, resulting from Yogic powers, enabled to expound to the world the signs of a disease in the Urine of a person in his treatise “Theraiyar Neerkuri Vaithyam†a book that details urine examination findings for diagnostic and prognostic purposes. The present paper deals with scientific validation of Neerkuri (urine examination), an important diagnostic tool in Siddha system of medicine. The methodology of diagnosis in Siddha system is based on eight fold examination of pulse, tactile perception, tongue, color and complexion, speech, eyes, stools and urine. Of all these parameters, Urine examination has gained paramount importance next to pulse examination. This paper parallels analyses the signs of urine examination between a few quotes from Sage Theraiyar text and modern text. This is an attempt to understand the Siddha system of diagnosing pathological conditions which are a non-invasive, highly cost effective procedure which can be used for both diagnostic and prognostic purposes