271 research outputs found

    Tinker.Solder.Tap: a graphic novel

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    Text: Bhagwati Prasad; Graphics: Amitabh Kumar; Translation and Editing: Shveta SardaThe illustrations convey a vivid sense of local street life and changing technologies in India. The book is loaded with intertwined stories of innovation in school, home, civic, and street life, often determined by people’s taste for videos, CD’s, new music and the underground markets available to produce them. The graphic novel presentation of research allows the reader to “be there” with the information and reflections of the author as well as the people who inhabit these stories

    R16. Formulation and Evaluation of Doxorubicin HCl Nanoliposomes by Ethanol Injection Method

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    Corresponding author (Pharmaceutics and Drug delivery): Arun Kumar Kotha, [email protected]://egrove.olemiss.edu/pharm_annual_posters/1015/thumbnail.jp

    A Genome-wide Combinatorial Strategy Dissects Complex Genetic Architecture of Seed Coat Color in Chickpea

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    The study identified 9045 high-quality SNPs employing both genome-wide GBS- and candidate gene-based SNP genotyping assays in 172, including 93 cultivated (desi and kabuli) and 79 wild chickpea accessions. The GWAS in a structured population of 93 sequenced accessions detected 15 major genomic loci exhibiting significant association with seed coat color. Five seed color-associated major genomic loci underlying robust QTLs mapped on a high-density intra-specific genetic linkage map were validated by QTL mapping. The integration of association and QTL mapping with gene haplotype-specific LD mapping and transcript profiling identified novel allelic variants (non-synonymous SNPs) and haplotypes in a MATE secondary transporter gene regulating light/yellow brown and beige seed coat color differentiation in chickpea. The down-regulation and decreased transcript expression of beige seed coat color-associated MATE gene haplotype was correlated with reduced proanthocyanidins accumulation in the mature seed coats of beige than light/yellow brown seed colored desi and kabuli accessions for their coloration/pigmentation. This seed color-regulating MATE gene revealed strong purifying selection pressure primarily in LB/YB seed colored desi and wild Cicer reticulatum accessions compared with the BE seed colored kabuli accessions. The functionally relevant molecular tags identified have potential to decipher the complex transcriptional regulatory gene function of seed coat coloration and for understanding the selective sweep-based seed color trait evolutionary pattern in cultivated and wild accessions during chickpea domestication. The genome-wide integrated approach employed will expedite marker-assisted genetic enhancement for developing cultivars with desirable seed coat color types in chickpe

    LOWER BOUNDS FOR THE MAHLER MEASURE AND INERTIA DEGREES OF PRIMES

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    We investigate the relationship between lower bounds for the Mahler measure and splitting of primes, and prove various lower bounds for the Mahler measure of algebraic integers in terms of the least common multiples of all inertia degrees of primes. The results generalise work of the second author and Kumar [\u27Lehmer’s problem and splitting of rational primes in number fields\u27, Acta Math. Hungar. 169(2) (2023), 349–358]

    Effect of precursor on antifouling efficacy of vertically-oriented graphene nanosheets

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    Antifouling efficacy of graphene nanowalls, i.e., substrate-bound vertically-oriented graphene nanosheets, has been demonstrated against biofilm-forming Gram-positive and Gram-negative bacteria. Where graphene nanowalls are typically prepared using costly high-temperature synthesis from high-purity carbon precursors, large-scale applications demand efficient, low-cost processes. The advancement of plasma enabled synthesis techniques in the production of nanomaterials has opened a novel and effective method for converting low-cost natural waste resources to produce nanomaterials with a wide range of applications. Through this work, we report the rapid reforming of sugarcane bagasse, a low-value by-product from sugarcane industry, into high-quality vertically-oriented graphene nanosheets at a relatively low temperature of 400 °C. Electron microscopy showed that graphene nanowalls fabricated from methane were significantly more effective at preventing surface attachment of Gram-negative rod-shaped Escherichia coli compared to bagasse-derived graphene, with both surfaces showing antifouling efficacy comparable to copper. Attachment of Gram-positive coccal Staphylococcus aureus was lower on the surfaces of both types of graphene compared to that on copper, with bagasse-derived graphene being particularly effective. Toxicity to planktonic bacteria estimated as a reduction in colony-forming units as a result of sample exposure showed that both graphenes effectively retarded cell replication

    Fermented Indigenous Indian Dairy Products: Standards, Nutrition, Technological Significance and Opportunities for its Processing

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    Fermentation is used since time immemorial for preservation of food. Since its inception, human kind has been practicing fermentation of various food products based on milk, fruits and vegetables, meat products, cereal and legumes, etc. Milk based products constitute of a large portion of our diet primarily in the Asian countries specifically in the Indian subcontinent. India produces about 132 MT of milk every year. Almost 60% of this is converted in traditional products. Fermented dairy products like Dahi (curd), Mishti Doi (sweetened curd), Shrikhand, Lassi and Chhach or Mohi (buttermilk), etc. are consumed frequently by the India population. For long the production of these products was unorganised. Recent technological innovations, research and awareness amongst masses has caused improvement in this scenario. The current paper reviews these products in term of present research advancement in mechanization and standardization of these products to be produced on a large scale, improving its economic value and nutritional significance

    Postharvest Treatment of Guava (Psidium guajava L.) Fruits with Boric Acid and NAA for Quality Regulation during Ambient Storage

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    Guava fruit exhibits a climacteric pattern of respiration and ethylene production so is highly perishable in nature and suffers great extent of post-harvest loss. Storage of guava fruits by using chemicals like GA3, Salicylic acid, NAA, potassium permanganate and boric acid as postharvest treatment is commercially acceptable and economically feasible. The present investigation was carried out with objective to compare the efficacy of boric acid and NAA and their most effective concentration for shelf-life enhancement of guava fruits in winter season. The fruit of guava, cv. Allahabad Safeda were harvested, selected for uniformity of size, colour and diseased fruits were discarded. Prior to the application of post-harvest treatments, destalking of the fruits was done by retaining only 0.5 cm long pedicels in each fruit. The destalked guava fruits were sorted and pre cooled in running water for 12−15 minutes. Fruits were treated with Boric acid @ 100 ppm, 200 ppm and 300 ppm, NAA @ 200 ppm, 300 ppm and 400 ppm for 1−2 minutes. The physical parameters like fruit size, fruit weight, physiological weight loss, decay of fruits and specific gravity; chemical parameters like TSS, titratable acidity, ascorbic acid and sugar content; and palatability rating were observed and compared with untreated fruits. Both, boric acid and NAA, had significantly affected the shelf life of guava fruits stored under ambient condition. Boric Acid 200 ppm and 300 ppm were equally effective, similarly NAA 300 ppm and 400 ppm were equally effective for quality retention in guava fruits

    <span style="font-size:11.0pt;mso-bidi-font-size: 10.0pt;font-family:"Times New Roman","serif";mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA" lang="EN-US">High performance liquid chromatography protocol for glucosinolate profiling in <i style="mso-bidi-font-style:normal">Brassica</i> L. species</span>

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    221-226<span style="font-size:11.0pt;mso-bidi-font-size: 9.0pt;font-family:" times="" new="" roman","serif";mso-fareast-font-family:"times="" roman";="" letter-spacing:-.1pt;mso-ansi-language:en-gb;mso-fareast-language:en-us;="" mso-bidi-language:ar-sa"="" lang="EN-GB">Isothiocyanates, the degradation products of glucosinolates reported specifically in the members of Brassicaceae family are potential alternative compounds to currently used fumigants. In the present study, <span style="font-size:11.0pt; mso-bidi-font-size:9.0pt;font-family:" times="" new="" roman","serif";mso-fareast-font-family:="" "times="" roman";letter-spacing:-.1pt;mso-ansi-language:en-us;mso-fareast-language:="" en-us;mso-bidi-language:ar-sa"="" lang="EN-US">six Brassica species, <span style="font-size:11.0pt;mso-bidi-font-size: 9.0pt;font-family:" times="" new="" roman","serif";mso-fareast-font-family:"times="" roman";="" letter-spacing:-.1pt;mso-ansi-language:en-gb;mso-fareast-language:en-us;="" mso-bidi-language:ar-sa;mso-bidi-font-weight:bold"="" lang="EN-GB">viz. Brassica alba (L.) Rabenh, B. nigra (L.) W. D. J. Koch (cv. ‘Banarasi rai’), B. napus L. (cv. ‘PPNS-1’), B. rapa L. (cv. ‘RESBR-240’), B. juncea (L.) Czern. (cv. ‘Kranti’) and B. carinata A. Braun (cv. ‘Kiran’) were evaluated for Sinigrin (one of the most important glucosinolates found in Brassica) content using High Performance Liquid Chromatography. Sinigrin concentration in different Brassica species ranged between 3.65 μM/g in B. napus L. to 16.42 μM/g in <i style="mso-bidi-font-style: normal">B. juncea (L.) Czern. (cv. ‘Kranti’). Therefore, B. juncea (L.) Czern. (cv. ‘Kranti’) was found as the most appropriate Brassica species to be used as biofumigant followed by <span style="font-size: 11.0pt;mso-bidi-font-size:9.0pt;font-family:" times="" new="" roman","serif";="" mso-fareast-font-family:"times="" roman";letter-spacing:-.1pt;mso-ansi-language:="" en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa;mso-bidi-font-weight:="" bold"="" lang="EN-US">B. <span style="font-size:11.0pt;mso-bidi-font-size: 9.0pt;font-family:" times="" new="" roman","serif";mso-fareast-font-family:"times="" roman";="" letter-spacing:-.1pt;mso-ansi-language:en-gb;mso-fareast-language:en-us;="" mso-bidi-language:ar-sa"="" lang="EN-GB">nigra <span style="font-size: 11.0pt;mso-bidi-font-size:9.0pt;font-family:" times="" new="" roman","serif";="" mso-fareast-font-family:"times="" roman";letter-spacing:-.1pt;mso-ansi-language:="" en-gb;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="" lang="EN-GB">(L.) W. D. J. Koch <span style="font-size:11.0pt;mso-bidi-font-size: 9.0pt;font-family:" times="" new="" roman","serif";mso-fareast-font-family:"times="" roman";="" letter-spacing:-.1pt;mso-ansi-language:en-gb;mso-fareast-language:en-us;="" mso-bidi-language:ar-sa"="" lang="EN-GB">(cv. ‘Banarasi rai’) and B. alba <span style="font-size:11.0pt;mso-bidi-font-size: 9.0pt;font-family:" times="" new="" roman","serif";mso-fareast-font-family:"times="" roman";="" letter-spacing:-.1pt;mso-ansi-language:en-gb;mso-fareast-language:en-us;="" mso-bidi-language:ar-sa;mso-bidi-font-weight:bold"="" lang="EN-GB">(L.) Rabenh.</span
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