Ultraviolet protection property of mulberry fruit extract on cotton fabrics

420-423Anthocyanin extracted from mulberry fruit has been applied onto the cotton fabric for protection against ultraviolet radiation. The amount of anthocyanin present in the mulberry extracts has been evaluated by pH differential method. The effect of anthocyanin concentration and its <i style="mso-bidi-font-style: normal">pH on the ultraviolet protection factor (UPF) of the fabric is studied. The study shows that higher concentration of anthocyanin at acidic pH yields higher UPF to the fabric than lower concentration. It is also found that there is no difference in UPF between the fabrics treated with crude mulberry fruit extract and the fabric treated with anthocyanin extracted from the mulberry fruit

Modeling and Design of Split-Pi Converter

High-power bidirectional dc–dc converters are being widely employed in renewable energy interfacing, energy storage, electric vehicle charging, military, aerospace, and marine applications. Among various bidirectional topologies documented in the literature for dc–dc power conversion, the split-pi converter invites special attention with regard to applications involving multi-phase systems requiring high-power density. This paper endeavors to present the small-signal modeling of the split-pi converter in its various operating modes. Subsequently, the dynamic characteristics of the converter are studied, and appropriate control design is presented for stable operation of the converter. Frequency response plots are illustrated, and a hardware prototype model of the converter is designed and implemented

Silibinin and naringenin against bisphenol a-induced neurotoxicity in zebrafish model—potential flavonoid molecules for new drug design, development, and therapy for neurological disorders

Bisphenol A (BPA), a well-known xenoestrogen, is commonly utilised in the production of polycarbonate plastics. Based on the existing evidence, BPA is known to induce neurotoxicity and behavioural issues. Flavonoids such as silibinin and naringenin have been shown to have biological activity against a variety of illnesses. The current research evaluates the neuropharmacological effects of silibinin and naringenin in a zebrafish model against neurotoxicity and oxidative stress caused by Bisphenol A. In this study, a novel tank diving test (NTDT) and light&ndash;dark preference test (LDPT) were used in neurobehavioural investigations. The experimental protocol was planned to last 21 days. The neuroprotective effects of silibinin (10 &mu;M) and naringenin (10 &mu;M) in zebrafish (Danio rerio) induced by BPA (17.52 &mu;M) were investigated. In the brine shrimp lethality assay, the 50% fatal concentrations (LC50) were 34.10 &mu;g/mL (silibinin) and 91.33 &mu;g/mL (naringenin) compared to the standard potassium dichromate (13.15 &mu;g/mL). The acute toxicity investigation found no mortality or visible abnormalities in the silibinin- and naringenin-treated groups (LC50 &gt; 100 mg/L). The altered scototaxis behaviour in LDPT caused by BPA was reversed by co-supplementation with silibinin and naringenin, as shown by decreases in the number of transitions to the light zone and the duration spent in the light zone. Our findings point to BPA&rsquo;s neurotoxic potential in causing altered scototaxis and bottom-dwelling behaviour in zebrafish, as well as the usage of silibinin and naringenin as potential neuroprotectants