| 7 | Settling and spreading behaviour of particle clusters in quiescent liquids in confined vessels显示文摘Here we report experiments on particle cluster settling at high Reynolds number in quiescent liquid contained in a vessel.The particles were observed to spread at the vessel bottom surface in a near-circular annular shape after settling irrespective of the shape of the vessel cross-section and particle shape,size,and types.Effect of different parameters such as mass,type and aspect ratio of the particles,height,and viscosity of liquid was investigated on spreading behaviour.Formation of the hemispherical bottom cap of the cluster that bounces upon hitting the vessel bottom surface was found to be responsible for the final circular annular shape of the settled structure.Particle leakage from the cluster was seen in the form of a tail.In the liquid having viscosity beyond 100 cP,cluster breakage was observed that resulted in hindered settling and asymmetric shapes of finally settled particles.The observations are useful to understand the overall area over which settling and spreading of such clusters can be observed. | Sayan Pal Amol A.Kulkarni | 2023 | Particuology2023，，12： | 0 |
| 8 | Elicitation-Based Modulation of Shelf Life in Fruits: Physiological and Molecular Insights显示文摘The process of ripening involves physiological and biochemical events that become a concern during postharvest storage.We have documented different approaches for the preservation and maintenance of fruit quality during the postharvest period that are biocompatible and fully safe for consumption.Chemical residues that sustain sensory characteristics,such as color,flavor,aroma,and texture,are considered.In fruit ripening,both physical and chemical elicitors are described that regulate ethylene biosynthesis or its signaling for gene expression.The key regulatory enzymes,such as ACC synthase and ACC oxidase,for ethylene biosynthesis,are important for both climacteric and non-climacteric fruits.Anti-oxidizing genes that retain sensory characteristics are concerns in this respect.Chemical elicitors,including chitosan,polyamine,phenolics,lipopolysaccharide,silver derivatives,and nanocomposites,are described.Gas pressure,light wavelengths,relative humidity,cooling,and other environmental factors are important for improved postharvest storage.These elicitors maintain redox status by inhibiting the generation of reactive oxygen species(ROS)or their lysis.Growth regulators,including abscisic acid,auxin,brassinosteroids,jasmonic acid,and salicylic acid,are important for the regulation of ripening.Mechanical injuries,ionic imbalances,temperature variations,and tissue dehydration can occur irrespective of ripening cate-gories.The use of synthetic physiochemically active compounds is discussed in terms of physiological,metabolic,cellular,and molecular functions.Ethylene-induced autocatalytic processes,antioxidant cascades,epigenetic regulation,and homeodomain gene expression are discussed.Sugar–acid metabolism,dissolution of the cell wall,and direct or indirect production of secondary metabolites related to postharvest storage are mentioned regarding chilling storage.Elicitors and agrochemicals that trigger plant defense to increase secondary metabolite production are discussed for reducing fruit senescence during postharvest storage. | Ankita Kundu Abir Das Sayan Pal Arijit Ghosh Malay Kumar Adak Masayuki Fujita Mirza Hasanuzzaman | 2023 | Phyton-International Journal of Experimental Botany2023，92，8： | 0 |
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