Cluster bean [Cyamopsis tetragonoloba (L.) Taub.], known commonly as “Guar,” is a vital legume crop grown mostly under rainfed conditions in arid and semi-arid regions of India during the Kharif and summer season. Numerous horticultural strategies may be used to improve the growth and productivity of guar including sea weed extract and humic acid. A field experiment was conducted to determine the influence of seaweed extract and humic acid on growth, yield and post-harvest characteristics of cluster bean. Seaweed extract and humic acid were administered in the field as foliar spray at 0.1, 0.2 and 0.3 per cent concentrations in a randomized block design (RBD) consisting of seven treatments and three replicates. The results indicated that the higher concentration of 0.3 per cent seaweed extract and humic acid produced significantly higher plant height, leaf number, pod number per plant and total yield per hectare as compared to the lower concentrations and control. The post-harvest study revealed that foliar treatment of 0.3 per cent humic acid and seaweed extract resulted in a lower percentage of physiological weight loss and increased the shelf life of pods compared to untreated.
The present work involves in determination of a suitable ratio of glycerol-water (GW) mixture for the preparation of nanofluid. The base liquid with 30% weight of glycerol is selected, based on the thermo-physical properties for dispersion of spherical cobalt (Co) nanoparticles of 80nm size, for a maximum concentration of 2% by weight. The stability investigation of prepared nanofluids is done by measuring Zeta potential and SEM imaging. The prepared cobalt nanofluid thermal conductivity is measured by maintaining 7.5pH as that concerned value has maximum Zeta potential. The maximum increment in thermal conductivity is found to be 38.4% for 2% nanofluid concentration is determined at a temperature of 60oC. The data obtained for the base liquid are in fine concurrence with the published data
A brick is major component for building work. Bricks are manufactured by grinding or crushing the clay in mills and mixing it with water to make it plastic. This paper presents a parametric experimental study, by utilization of Hypo Sludge and Silica Fume in brick manufacturing by replaced clay and sand to increase the properties of brick. Silica Fume is taken as constant of 5% and Hypo Sludge is replaced with 10%, 20%, 30%, 40% and 50% for each proportion that have been calculated. The mechanical properties of brick are investigated. These bricks were tested for compressive strength, water absorption, bulk density and efflorescence. The test on brick is according to IS: 3495-1992.
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