292 research outputs found

    Flagged Skew Schur Polynomials Twisted By Roots Of Unity

    Full text link
    We generalize a theorem of Littlewood concerning the factorization of Schur polynomials when their variables are twisted by roots of unity. We show that a certain family of flagged skew Schur polynomials admit a similar factorization. These include an interesting family of Demazure characters as a special case

    Flexural Study of Lightweight Concrete Beams casted of Oil Palm Shell (OPS) Aggregates

    Get PDF
    This study's main goal is to investigate the potential applications of OPS aggregate in the manufacturing of concrete. This helps to preserve natural resources in addition to addressing the problem of how to get rid of OPS trash. For this study, twelve under-reinforced concrete beams were made and tested. The reinforcing ratios of these beams varied, from 0.52% to 3.90%.  The paper presents data related to several important aspects of the beams' behavior, including Information about how the beams deflected under load, Details about when and how cracks formed in the beams, Measures of how much the beams could deform before failure, Information on how the beams rotated at their ends during testing. The flexural behaviour of reinforced OPS concrete beams and other regular reinforced concrete beams was compared in the study. The experimental results and the current industry Codes of practice were found to be reasonably well aligned. Notably, beams with low reinforcement ratios satisfied every serviceability standard listed in BS 8110, proving that they were appropriate for real-world uses

    GIS-based air pollution distribution mapping of emissions from public buses for Coimbatore Corporation, Tamil Nadu, India

    Get PDF
    947-951Vehicle transport on roads is a dominant source of air pollution, and hence spatial assessment of its risks is necessary for the decision makers to evaluate its impact on the public. Indian road transport, especially buses, contribute significantly to air pollution, that too in highly accessible areas like bus stands and bus stops. This paper proposes a three-step integrated method to map relative pollution levels of bus stops and bus routes of Coimbatore Corporation using spatial analysis tools of ArcGIS and suggestion of routes for eco-friendly buses and vehicles

    Evaluation of herbal ointment containing ethanol extract of Plecranthus amboinicus root for the management of psoriasis

    Get PDF
    Plant, Plecranthus amboinicus (Lour.) Spreng, belonging to the family Lamiaceae, commonly known as ‘Karpuravalli’ in Tamil language is widely used in folk medicine to treat conditions like cold, asthma, constipation, headache, cough, fever and skin diseases. The present study aimed to evaluate antipsoriatic effect of the ethanol extract of Plecranthus amboinicus root. Ointment containing ethanolic extract of Plecranthus amboinicus root was prepared and evaluated for antipsoriatic activity using complete Freund's adjuvant (CFA) and formaldehyde induced animal model. Psoriasis is induced by applying mixture of 0.1 mL of prepared CFA and formaldehyde mixture (1:10 ratio) topically for 7 days on the dorsum surface of the skin of Swiss albino mice. Antipsoriatic effect of 0.5% and 1.0% (w/w) ointments containing ethanolic extract of Plecranthus amboinicus root was evaluated in terms of Psoriasis severity index (PSI) by the phenotypic features (redness, scales and erythema) and histological features (epidermal thickness). The result showed that there was a significant increase in the orthokeratinocyte layer and a significant reduction in the epidermal layer of skin in the in vivo mice model with a progressive reduction (p**<0.01) in the severity of psoriatic lesions (redness, erythema, and scales) from day 7 to 21st day and significant (p*<0.05) decreased epidermal thickness and increased orthokeratotic regions in animals treated with 0.5% and 1.0% (w/w) ointments of Plecranthus amboinicus root. The present investigations revealed that Plecranthus amboinicus root possess potent antipsoriatic activity, confirming their traditional use in skin disorders

    Evaluation of herbal ointment containing ethanol extract of Plecranthus amboinicus root for the management of psoriasis

    Get PDF
    553-559Plant, Plecranthus amboinicus (Lour.) Spreng, belonging to the family Lamiaceae, commonly known as ‘Karpuravalli’ in Tamil language is widely used in folk medicine to treat conditions like cold, asthma, constipation, headache, cough, fever and skin diseases. The present study aimed to evaluate antipsoriatic effect of the ethanol extract of Plecranthus amboinicus root. Ointment containing ethanolic extract of Plecranthus amboinicus root was prepared and evaluated for antipsoriatic activity using complete Freund's adjuvant (CFA) and formaldehyde induced animal model. Psoriasis is induced by applying mixture of 0.1 mL of prepared CFA and formaldehyde mixture (1:10 ratio) topically for 7 days on the dorsum surface of the skin of Swiss albino mice. Antipsoriatic effect of 0.5% and 1.0% (w/w) ointments containing ethanolic extract of Plecranthus amboinicus root was evaluated in terms of Psoriasis severity index (PSI) by the phenotypic features (redness, scales and erythema) and histological features (epidermal thickness). The result showed that there was a significant increase in the orthokeratinocyte layer and a significant reduction in the epidermal layer of skin in the in vivo mice model with a progressive reduction (p**st day and significant (p*Plecranthus amboinicus root. The present investigations revealed that Plecranthus amboinicus root possess potent antipsoriatic activity, confirming their traditional use in skin disorders
    corecore