A comparative study on the effect of cotton dust and 2, 4-D on three pathogenic fungi

Summary The present work aims at the elucidation of the effect of either cotton dust and its components or 2,4-D on the relative vigours of the three pathogenic fungi namely,Fusarium solani, Sclerotium bataticola andBotrytis fabae. Botrytis mycelial growth was found to be comparatively more sensitive to cotton dust thanFusarium andSclerotium. The elucidation of the effect of individual cotton dust components has shown that Gammexane is the most effective inhibitory component while sulphur and DDT caused slight inhibition. This inhibitory effect of Gammexane is more pronounced when mixed with DDT than with sulphur. 500 p.p.m. 2,4-D concentration inhibitedBotrytis growth more thanFusarium orSclerotium, 1 % 2,4-D concentration was proved to be fungicidal. 2,4-D suppressed the germinative potentialities ofFusarium andBotrytis conidia.

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Zusammenfassung Die jetzige Arbeit trachtet nach der Aufklärung der Wirkung des Baumwollstaubes und seiner Bestandteile, und des 2,4-D auf die relative Widerstandsfähigkeit von drei pathogen Pilzen, nämlich,Fusarium solani, Sclerotium bataticola undBotrytis fabae. Mycelium-Wachstum vonBotrytis war vergleichsweise empfindlicher gegen Baumwollstaub als vonFusarium undSclerotium. Die Aufklärung der Wirkung der individuellen Komponenten des Baumwollstaubes zeigte, daß Gammexane der wirksamste, verzögernde Bestandteil ist, während Sulfur und DDT nur eine geringfügige Verzögerung verursachten. Die verzögernde Wirkung von Gammexane ist ausgesprochener, wenn es mit DDT als mit Sulfur gemischt ist. Die Konzentration von fünfhundert Teilen in 1 Million von 2,4-D unterdrückt das Wachstum vonBotrytis mehr als das vonFusarium oderSclerotium, die Konzentration von 1 % des 2,4-D war pilztötend. 2,4-D unterdrückte die Keimungsmöglichkeit vonFusarium undBotrytis Conidia.

     

An efficient power-aware VM allocation mechanism in cloud data centers: a micro genetic-based approach

Cluster Computing - Efficiency in cloud servers’ power consumption is of paramount importance. Power efficiency makes the reduction in greenhouse gases establishing the concept of green...     

Entrapment of an air gun pellet between the thyroid cartilage and the lining mucosa in a patient with a penetrating neck injury: a case report

ABSTRACT: INTRODUCTION: Air guns, either modern or traditional models, are powerful weapons that are capable ofcausing serious or life-threatening injuries. CASE PRESENTATION: Here, we present a case of an air gun pellet injury, with the pellet trapped between the thyroidcartilage and the lining mucosa of a 58-year-old Iranian man. CONCLUSION: Entrapment of air gun pellet between thyroid cartilage and the lining mucosa, as presented inour case, may cause diagnostic challenges through the clinical presentation of slightodynophagia.     

New insights into the role of pH and aeration in the bacterial production of calcium carbonate (CaCO3)

Over recent years, the implementation of microbially produced calcium carbonate (CaCO₃) in different industrial and environmental applications has become an alternative for conventional approaches to induce CaCO₃ precipitation. However, there are many factors affecting the biomineralization of CaCO₃, which may restrict its application. In this study, we investigated the effects of pH and aeration as the main two influential parameters on bacterial precipitation of CaCO₃. The results showed that the aeration had a significant effect on bacterial growth and its rise from 0.5 to 4.5 SLPM could produce 4.2 times higher CaCO₃ precipitation. The increase of pH to 12 resulted in 6.3-fold increase in CaCO₃ precipitation as compared to uncontrolled-pH fermentation. Morphological characterization showed that the pH is an effective parameter on CaCO₃ morphology. Calcite was found to be the predominant precipitate during aeration-controlled fermentations, while vaterite was mainly produced at lower pH (up to 10) over controlled-pH fermentations. Further increase in pH resulted in a morphological transition, and vaterite transformed to calcite at the pH ranges between 10 and 12.