Electrical power grid is undergoing a major renovation, to meet the power quality and power avail... more Electrical power grid is undergoing a major renovation, to meet the power quality and power availability demands of the 21st century. The new power grid, which is also called as the smart grid, aims to integrate the recent technological advancements in the Information and Communication Technology (ICT) field to the power engineering field. The present smart grid implementations focus on
The airframe of any flying vehicle comprises structural members such as stringers and stiffeners ... more The airframe of any flying vehicle comprises structural members such as stringers and stiffeners made of sheet metal members, joined by riveted lap joints. Although different joining techniques exist, the rivet type of fastening still stands efficient. Numerous such rivets are required to join the skin completely. The mechanical loading due to the pressurization and depressurization of the fuselage, which occurs once in every flight and the air loads during the cruising flight causes the concentrated stress at the rivet joints which results in the failure of joints. The main objective of this research paper is to improve the strength of the riveted joints using Fiber Metal Laminate (FML) as the reinforcing material between the riveted joints. The tensile testing of the specimens with and without reinforcement are carried out and from the results it is concluded that due to the presence of reinforcement between the riveted joints the overall mechanical strength of the riveted joints is improved.
Http Dx Doi Org 10 1080 14786419 2011 576395, Aug 1, 2011
Volatile oil composition of the leaves of Rhododendron anthopogon (Ericaceae) growing wild in alp... more Volatile oil composition of the leaves of Rhododendron anthopogon (Ericaceae) growing wild in alpine Western Himalaya was studied using different extraction techniques including SC-CO(2) extraction and hydrodistillation (HD). Results from different extraction methodologies were compared with headspace analysis (HS) and evaluated for the effectiveness of techniques in characterisation of various terpene categories and to assess their influence on the yield and composition of volatiles. Variability in constituents and in quantitative yields was observed. The results varied with different extraction methods. A total of 27 constituents in SC-CO(2) extraction, 31 in HD and 17 in HS analysis were identified. Constituents in SC-CO(2) and HD oils were identified by gas chromatography mass spectrometry analysis. SC-CO(2) extraction was carried out at 40°C and 140 bar pressure and the oil represented by major constituents as β-caryophyllene (5.96%), α-humulene (4.06%) and p-menthadiene-2,9-diol (7.28%); in HD, oil limonene (11.26%), β-caryophyllene (11.62%), α-humulene (7.22%), and E-nerolidol (5.83%) dominated the oil and in HS analysis, limonene (24.14%), γ-terpinene (40.73%), α-terpinene (4.92%), β-phellandrene (3.44%) and β-ocimene (7.15%) were present as major constituents.
Abstract Studies were conducted on blast disease of finger millet that included cultural, morphol... more Abstract Studies were conducted on blast disease of finger millet that included cultural, morphological, pathological and molecular diversity, epidemiology and identification of host-plant resistance at International Crops Research Institute for the Semi-Arid Tropics ( ...
Experiments were conducted on field distillation unit to distil rose oil and rose water from the ... more Experiments were conducted on field distillation unit to distil rose oil and rose water from the fresh flowers of Damask rose (Rosa damascena Mill.) under different pressures and temperatures to study and compare the essential oil composition by GC-FID. The monoterpene hydrocarbons and esters were found to be in traces, and stearoptene content was found to be higher in the oil distilled under high pressure, as compared to oil produced under atmospheric pressure. In general, the percentage of total alcohols (55.25-83.41%) in rose oil increased with the increase in pressure and temperature of the distillation. Physicochemical properties of rose oil distilled at varying level of temperatures and pressures are discussed. A comparative study was also conducted of rose oil constituents from dichloromethane-extracted rose water and redistilled rose water under atmospheric and higher pressure. At higher pressure early-eluting components in the GC column were present in traces and decrease in total alcoholic content was observed. It can be concluded that distillation conducted under pressure does not yield good quality oil. However, dichloromethane-extracted rose oil from rose water carries a higher amount of 2-phenylethyl alcohol. The total rose alcohol content present in rose water was higher than in rose oil.
Sorghum (Sorghum bicolor L. Moench) germplasm collections consisting of 80 accessions from Madhya... more Sorghum (Sorghum bicolor L. Moench) germplasm collections consisting of 80 accessions from Madhya Pradesh and Rajasthan were evaluated during kharif 2008 and 2009 (June-October) season for 22 agro-morphological traits using minimal descriptors developed by NBPGR. Analysis of variance showed significant differences among genotypes for 22 traits. Large variation among genotypes was found for the traits viz., days to flowering (49-85 days), leaf length (47-95 cm), leaf width (4.2-8.7 cm), number of leaves per plant (7-15), plant height (165-349 cm), panicle length (8.2-29.4 cm), panicle width (3.5-8.9 cm), 100-seed weight (1.7-3.4 g), days to maturity (101-121 days), stem fresh weight/10 plants) (575-3,225 g) and stem dry weight/10 plants (288-2188 g). Selections can be practiced for traits such as days to flowering, leaf length, leaf orientation, days to maturity and plant height as governed by additive gene action.
Spathodea campanulata belongs to the family Bignoneaceae, commonly known as the Fountain tree, Af... more Spathodea campanulata belongs to the family Bignoneaceae, commonly known as the Fountain tree, African tulip tree, Flame-of-the forest. The leaves possess analgesic and anti-inflammatory activities. The ethanolic extract of leaf and flower shows antimicrobial properties. The roots peel contains iridoid glucoside and phenolic derivatives p-hydroxy-benzoic acid and methyl p-hydroxy-benzoate. They were evaluated for anti fungal activity. Macroscopically, the Spathodea campanulata is compound leaf, oblong shape, entire margin, hairy surface, normal base, short solid petiole. The microscopic study showed the presence of collenchyma, vascular bundles, spongy parenchyma, palisade cells, diacytic stomata, trichomes. Physicochemical studies revealed moisture content, foreign matter, total ash, acid insoluble ash, water soluble ash, sulphated ash. The leaves were extracted by cold maceration process using solvents like chloroform, acetone, methanol and water. The preliminary phytochemical scr...
Electrical power grid is undergoing a major renovation, to meet the power quality and power avail... more Electrical power grid is undergoing a major renovation, to meet the power quality and power availability demands of the 21st century. The new power grid, which is also called as the smart grid, aims to integrate the recent technological advancements in the Information and Communication Technology (ICT) field to the power engineering field. The present smart grid implementations focus on
The airframe of any flying vehicle comprises structural members such as stringers and stiffeners ... more The airframe of any flying vehicle comprises structural members such as stringers and stiffeners made of sheet metal members, joined by riveted lap joints. Although different joining techniques exist, the rivet type of fastening still stands efficient. Numerous such rivets are required to join the skin completely. The mechanical loading due to the pressurization and depressurization of the fuselage, which occurs once in every flight and the air loads during the cruising flight causes the concentrated stress at the rivet joints which results in the failure of joints. The main objective of this research paper is to improve the strength of the riveted joints using Fiber Metal Laminate (FML) as the reinforcing material between the riveted joints. The tensile testing of the specimens with and without reinforcement are carried out and from the results it is concluded that due to the presence of reinforcement between the riveted joints the overall mechanical strength of the riveted joints is improved.
Http Dx Doi Org 10 1080 14786419 2011 576395, Aug 1, 2011
Volatile oil composition of the leaves of Rhododendron anthopogon (Ericaceae) growing wild in alp... more Volatile oil composition of the leaves of Rhododendron anthopogon (Ericaceae) growing wild in alpine Western Himalaya was studied using different extraction techniques including SC-CO(2) extraction and hydrodistillation (HD). Results from different extraction methodologies were compared with headspace analysis (HS) and evaluated for the effectiveness of techniques in characterisation of various terpene categories and to assess their influence on the yield and composition of volatiles. Variability in constituents and in quantitative yields was observed. The results varied with different extraction methods. A total of 27 constituents in SC-CO(2) extraction, 31 in HD and 17 in HS analysis were identified. Constituents in SC-CO(2) and HD oils were identified by gas chromatography mass spectrometry analysis. SC-CO(2) extraction was carried out at 40°C and 140 bar pressure and the oil represented by major constituents as β-caryophyllene (5.96%), α-humulene (4.06%) and p-menthadiene-2,9-diol (7.28%); in HD, oil limonene (11.26%), β-caryophyllene (11.62%), α-humulene (7.22%), and E-nerolidol (5.83%) dominated the oil and in HS analysis, limonene (24.14%), γ-terpinene (40.73%), α-terpinene (4.92%), β-phellandrene (3.44%) and β-ocimene (7.15%) were present as major constituents.
Abstract Studies were conducted on blast disease of finger millet that included cultural, morphol... more Abstract Studies were conducted on blast disease of finger millet that included cultural, morphological, pathological and molecular diversity, epidemiology and identification of host-plant resistance at International Crops Research Institute for the Semi-Arid Tropics ( ...
Experiments were conducted on field distillation unit to distil rose oil and rose water from the ... more Experiments were conducted on field distillation unit to distil rose oil and rose water from the fresh flowers of Damask rose (Rosa damascena Mill.) under different pressures and temperatures to study and compare the essential oil composition by GC-FID. The monoterpene hydrocarbons and esters were found to be in traces, and stearoptene content was found to be higher in the oil distilled under high pressure, as compared to oil produced under atmospheric pressure. In general, the percentage of total alcohols (55.25-83.41%) in rose oil increased with the increase in pressure and temperature of the distillation. Physicochemical properties of rose oil distilled at varying level of temperatures and pressures are discussed. A comparative study was also conducted of rose oil constituents from dichloromethane-extracted rose water and redistilled rose water under atmospheric and higher pressure. At higher pressure early-eluting components in the GC column were present in traces and decrease in total alcoholic content was observed. It can be concluded that distillation conducted under pressure does not yield good quality oil. However, dichloromethane-extracted rose oil from rose water carries a higher amount of 2-phenylethyl alcohol. The total rose alcohol content present in rose water was higher than in rose oil.
Sorghum (Sorghum bicolor L. Moench) germplasm collections consisting of 80 accessions from Madhya... more Sorghum (Sorghum bicolor L. Moench) germplasm collections consisting of 80 accessions from Madhya Pradesh and Rajasthan were evaluated during kharif 2008 and 2009 (June-October) season for 22 agro-morphological traits using minimal descriptors developed by NBPGR. Analysis of variance showed significant differences among genotypes for 22 traits. Large variation among genotypes was found for the traits viz., days to flowering (49-85 days), leaf length (47-95 cm), leaf width (4.2-8.7 cm), number of leaves per plant (7-15), plant height (165-349 cm), panicle length (8.2-29.4 cm), panicle width (3.5-8.9 cm), 100-seed weight (1.7-3.4 g), days to maturity (101-121 days), stem fresh weight/10 plants) (575-3,225 g) and stem dry weight/10 plants (288-2188 g). Selections can be practiced for traits such as days to flowering, leaf length, leaf orientation, days to maturity and plant height as governed by additive gene action.
Spathodea campanulata belongs to the family Bignoneaceae, commonly known as the Fountain tree, Af... more Spathodea campanulata belongs to the family Bignoneaceae, commonly known as the Fountain tree, African tulip tree, Flame-of-the forest. The leaves possess analgesic and anti-inflammatory activities. The ethanolic extract of leaf and flower shows antimicrobial properties. The roots peel contains iridoid glucoside and phenolic derivatives p-hydroxy-benzoic acid and methyl p-hydroxy-benzoate. They were evaluated for anti fungal activity. Macroscopically, the Spathodea campanulata is compound leaf, oblong shape, entire margin, hairy surface, normal base, short solid petiole. The microscopic study showed the presence of collenchyma, vascular bundles, spongy parenchyma, palisade cells, diacytic stomata, trichomes. Physicochemical studies revealed moisture content, foreign matter, total ash, acid insoluble ash, water soluble ash, sulphated ash. The leaves were extracted by cold maceration process using solvents like chloroform, acetone, methanol and water. The preliminary phytochemical scr...
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