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In order to produce deep shades of colour, ramie fibre was subjected to pretreatment by cationization, caustic mercerization (slack and tension condition), and liquid ammonia mercerization. The untreated and pretreated samples were dyed with 0.5 to 7 % concentrations (on mass of fiber (o.m.f)) of Liyuansol Red FL-2BL reactive dye. The dyeing properties of dye exhaustion, fixation, colour uniformity, wash fastness, and rubbing fastness were investigated. The results indicated that these pretreatments improved dye exhaustion and fixation on ramie fibre, with no loss of fastness. For the untreated and treated substance, the amount of dye mass absorption increased linearly with increased dye o.m.f. Cationic treatment improved performance, with 89 % and 98 % for exhaustion and fixation, respectively, and the maximum K/S values of all fibers receiving pretreatment. The colour uniformity was acceptable and similar for the untreated and treated ramie fibers, with the exception of cationic-treated fabric dyed at 7 % dye o.m.f that showed a high standard deviation value of colour uniformity. The Freundlich and Langmuir adsorption isotherm models were also used to study the adsorption of dye on ramie fibre; all of the adsorption processes fit the Freundlich model. 相似文献
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Dipanwita Haldar Rahul Nigam C. Patnaik Sujay Dutta Bimal Bhattacharya 《Paddy and Water Environment》2016,14(4):451-461
Assessing the nature and extent of damage due to natural calamities remains one of the thrust areas in monitoring resource inventory through remote sensing. The effect of the cyclone Phailin and the post-incessant rains during second fortnight of October 2013 on coastal Odisha was studied in terms of rice area flooded, submerged and damaged. Multi-temporal SAR data were analysed to obtain the rice mask, and from this rice mask, the flood affected rice area was determined. Taluka-wise and district-wise crop loss proportion was estimated, and the overall production loss has been estimated. SAR data aided in delineation of flooded regions, while AWiFS NDVI data of subsequent dates showed both continued inundation and crop vigour status post-flood time period. The ground truth indicated that a major portion of the inundated region was not rice but was typha grasses and harvested rice field which should not be accounted as damage to rice crop. The damage on crop yield was difficult to assess; however, the inundation of the crop at panicle initiation and flowering would have impact on grain filling (results in chaffiness) and was considered as completely damaged. Most of the current inundated rice regions fall in this category. It was estimated that a total of 0.167 million hectares and 0.37 million tons of rice crop was lost in the cyclone and floods. The district-level percentage area of rice flooded was communicated to State Remote Sensing Centre in four days timeframe. The overall accuracy obtained for the validation of the ground truth sites was 91.5 %. 相似文献
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Sucheta Sharma Rahul Gupta D. Singh 《Communications in Soil Science and Plant Analysis》2016,47(2):203-212
In a greenhouse experiment, wheat cultivars PDW 291, PBW 550, and TL 2908 were grown in alkaline sandy-loam soil treated with sodium selenate at 0, 2, and 4 mg selenium (Se) kg?1 soil. Selenate-treated wheat plants accumulated greater Se in roots, stems, leaves, and grains and showed growth retardation, snow-white chlorosis, decreased shoot length and chlorophyll, and reduced leaf area and produced less number of grains as compared to control plants. Maximum reduction in these parameters was observed in selenate-treated TL 2908 plants and most of the plants died before maturity with almost no grain formation with 4 mg Se kg?1 soil. Selenium accumulation resulted in decreased reducing sugar, starch, and protein contents in grains whereas total free amino acids increased significantly in all the three cultivars. Selenium accumulation in wheat showed metabolic disturbances and its accumulation in grains was beyond toxic levels, thus making it unfit for consumption. 相似文献
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Ambika Sharma Imran Sheikh Rahul Kumar Krishan Kumar Pritesh Vyas H. S. Dhaliwal 《Euphytica》2018,214(4):62
1RS.1BL translocation in wheat, exploited for its multiple disease resistance (Lr26, Yr9, Sr31 and Pm8), has maintained significance due to its agronomical advantages. However, this translocation exhibits serious defects in dough quality due to the presence of Sec-1 loci on 1RS arm. In the present investigation micro SDS sedimentation test (MST), high molecular weight glutenin subunits (HMWGS) and bread making analysis of 26 genotypes were studied along with their root phenotyping in the field and under hydroponic culture system. The MST values showed that genotypes having Sec-1 loci had low MST values but in the presence of Glu-D1 (5?+?10) with Glu-B1 (7?+?9) and (7?+?8) they had high MST values, thus overcoming the negative effects of secalin on dough quality. The loaf volume showed positive correlation with MST values of the genotypes. The translocation of 1RS arm led to higher root biomass and longer root length than Pavon 76 without 1RS. Better root traits in recombinant 1RS 44:38 and 1B?+?38 than Pavon 1RS.1BL suggested the role of negative epistatic effects between different QTL regions in 1RS arm. The results suggest that it should be possible to harness the useful alleles associated with good dough quality, better root traits, high yield and stress tolerance with or without secalin. 相似文献
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Rahul Behl PhD Jyotsna Behl PhD Neelam Gupta PhD S.C. Gupta PhD S.P.S. Ahlawat PhD Mahesh Ragnekar PhD S. Katoch PhD Z. Ahmed PhD 《Journal of Equine Veterinary Science》2006,26(6):257-261
The Zanskari and Spiti ponies were characterized for genetic variation using a set of 25 equine microsatellite markers. The DNA was isolated from the 42 blood samples of Zanskari and 32 blood samples of Spiti ponies collected from their respective breeding tracts. The DNA was amplified by polymerase chain reaction at the studied microsatellite loci and amplified product was resolved for alleles by denaturing urea-polyacrylamide gel electrophoresis. The allelic frequency data so obtained was statistically analyzed using POPGENE computer program. The PCR product size-range varied from 84 to 102 at locus HTG6 to 238 to 244 at locus UCDEQ425. The observed number of alleles ranged from four to nine with a mean (± standard deviation) of 5.80 ± 1.32 alleles per locus in Zanskari and 5.40 ± 1.04 alleles per locus in Spiti ponies. The mean observed heterozygosity was found to be 0.61 ± 0.06 and 0.56 ± 0.09 for Zanskari and Spiti ponies, respectively. The Nei's standard and unbiased genetic distance were found to be 0.11 and 0.09, respectively, indicating close genetic relatedness of Zanskari and Spiti ponies. 相似文献
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Mahak Singh Rongsennangba Talimoa Mollier Renphamo Nzanthung Patton Nungshitula Pongener Lahar Jayoti Bordoloi Rakesh Kumar Rahul Katiyar Meraj Haider Khan Dipjayoti Rajkhowa Vinay Kumar Mishra 《Reproduction in domestic animals》2023,58(1):27-38
The reactive oxygen species (ROS) which are produced during storage of boar semen are causing oxidative stress and leads to poor fertility. Also, tropical and sub-tropical weather condition adversely impacts the physicomorphological quality and fertility of boar sperm. The aim of this study was to examine the effects of feeding linseed oil to boar on its seminal attributes, sperm kinetics, biomarkers of antioxidant, fatty acid profile of seminal plasma (SP) and sperm and in vivo fertility. Six Hampshire crossbreed boars were fed with 90 ml linseed oil (LIN) whereas six Hampshire crossbreed boars were fed 90 ml canola oil (CON) for 16 weeks. Sperm quality was evaluated (60 ejaculates for each group; a total of 120 ejaculates) for motility, livability, abnormal morphology, acrosomal membrane integrity, hypo-osmotic swelling test (HOST) and sperm kinetic parameters by computer assisted semen analysis (CASA) at 0 h and at 72 h of storage at 17°C. Biomarkers of antioxidant (glutathione peroxidase; GPx, catalase; CAT, total antioxidant capacity; TAC) and malondialdehyde (MDA) were measured in SP and serum. Gas chromatography–mass spectrometry (GC–MS) was used for the estimation of fatty acid composition of SP and sperm. Boars fed with linseed oil had higher semen volume (p < .01) and more total sperm numbers (p < .01). Feeding linseed oil to boar enhanced seminal attributes (p < .05) at 0 h as well as at 72 h of storage. Linseed oil feeding (p < .01) improved biomarkers of antioxidants and significantly (p < .01) lowered the lipid peroxidation in serum and SP. Linseed oil feeding (p < .05) increased the proportion of alpha linolenic (ALA), arachidonic and docosahexaenoic (DHA) fatty acids in SP. The ratio of n-6 to n-3 fatty acids in sperm increased significantly (p < .01) in treatment group. Farrowing rate was significantly (p < .05) higher in treatment group. In conclusion, feeding linseed oil to boar improved the in vivo fertility, enhanced antioxidant capacity and increased the DHA content of SP and sperm. 相似文献
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Ilson Whang Beomseok Lee Rahul Krishnan Hiroaki Nakajima Hidetaka Furuya Sang Phil Shin 《Journal of veterinary science (Suw?n-si, Korea)》2020,21(6)
BackgroundDicyemids are parasites found in the renal sac of cephalopods. The first species of dicyemid was found from kidneys of the Korean common octopus Callistoctopus minor.ObjectivesThis study aimed to identify the dicyemid and investigate the effect on renal sac of host.MethodsIn this study, we compared the morphological characteristics of isolate to dicyemids (Dicyema sphyrocephalum, Dicyema clavatum, and Dicyema dolichocephalum) reported from C. minor in Japan. We compared the 18S ribosomal RNA (rDNA) and cytochrome c oxidase subunit I (COI) sequences of isolate to the sequences of D. shyrocephalum and D. clavatum. The infected octopuses renal tissues were histologically compared with the tissues of uninfected individuals.ResultsThe morphological characteristic of this isolated species corresponds to D. sphyrocephalum. The sequences similarities of 18S rDNA and COI gene of isolate are 99.7% and 98.1% with D. sphyrocephalum. We observed morphological changes in the epithelia folds of kidney at the dicyemids attached areas.ConclusionsThe present study identified the isolate as D. sphyrocephalum and this is the first report of dicyemid species from Republic of Korea. Further studies on the effects of dicyemids on growth and health status of cephalopods will be needed. 相似文献
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Devi Elangbam Julia Labala Rajendra Kumar Sanabam Rakesh Singh Nandeibam Samarjit Modak Rahul Devi Huidrom Sunitibala 《Genetic Resources and Crop Evolution》2022,69(2):545-558
Genetic Resources and Crop Evolution - Citrus indica Yu. Tanaka is a wild and endangered progenitor species of citrus endemic to North East (NE) India. It is reported to be restricted to Nokrek... 相似文献
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Tiwari Rahul Kumar Bashyal Bishnu Maya Shanmugam V. Lal Milan Kumar Kumar Ravinder Sharma Sanjeev Naga Kailash Chandra Chourasia Kumar Nishant Aggarwal Rashmi 《植物病害和植物保护杂志》2022,129(1):173-179
Journal of Plant Diseases and Protection - Potato stands first as a non-cereal food crop for global consumption purposes. During the year 2019–20, dry rot disease symptoms were observed on... 相似文献