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Dubey, R. K.
- Studies on Essential Oil Content of Eucalyptus Species Grown in Tarai Region of Uttar Pradesh, Nainital for Timber
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Source
Indian Forester, Vol 109, No 3 (1983), Pagination: 153-158Abstract
Seventeen Eucolyptus species grown basically for timber in Tarai region of Uttar Prodesh, were studied for its oil as well as timber value. Growth parameters and oil content differred due to species. Among all, E. teretieornis × E. camaldulensis appeared to be the best species for the purposes of timber as well as oil containing cineol used in medicines. E. saligna, E. camaldulensis, E. populifolia and E. rudis also performed better are the useful specie. For plantation. E cilriodora containing different constituent in the oil may also be a good source of citronellal and citronellol which are used in perfumery industry together with its timber value.
- Spatial Hole Burning and its Analogy with some Non-physics Context
Abstract Views :387 |
PDF Views:275
Authors
Affiliations
1 C M J University, Modrina Mansion, Laitumkhra, Shillong-793003, Meghalaya, IN
2 Department of Physics, Digboi College, Digboi-786171, IN
3 Centre for Laser of Optical Science, New Uchamati, Doom Dooma-786151, IN
1 C M J University, Modrina Mansion, Laitumkhra, Shillong-793003, Meghalaya, IN
2 Department of Physics, Digboi College, Digboi-786171, IN
3 Centre for Laser of Optical Science, New Uchamati, Doom Dooma-786151, IN
Source
Indian Journal of Energy, Vol 1, No 4 (2012), Pagination: 45-49Abstract
The semi classical theory of laser as developed by Willis Lamb and coworkers several decades ago explains a large number of laser phenomena particularly in gaseous phase. In this theory it has been shown that, whenever we plot normalized population difference versus axial coordinates, there appears dips or holes at regular intervals at particular positions along the laser axis. These holes represent the depletion of population inversion thereby meaning the reduction of laser beam intensity. These holes are known as spatial holes. These holes are always present in laser originating from a Fabry-Perot cavity and are not welcome in the operation of high power laser. In the present work, we analyzed the phenomenon of spatial hole burning in the light of some non-physics context.Keywords
Spatial Hole Burning, Laser Beam Intensity, Fabry-perot Cavity, Non-physics ContextFull Text
References
- M. Sargent III, M.O. Scully and W. E. Lamb (1974).Jr. Laser Physics, Addison Wesley Publishing Company, Massachusetts, , pp 261-265.
- W. E. Lamb (1964) Jr. Phys. Rev., 134, A 1429
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- R. M. Borah and G. D. Baruah (1999), Asian J. of Chem., 3, 63.
- R. K. Dubey and G. D. Baruah (2010), Archives of Phys. Res., 1, 35.
- R. K. Dubey (2010), Investigation on V and Λ Schemes of Lasing Without Inversion, , Ph. D. thesis, Dibrugarh University.
- Dietary Patterns of Antenatal Women Attending Urban Health Centre and University Health Centre of Banaras Hindu University
Abstract Views :175 |
PDF Views:3
Authors
Affiliations
1 Department of Preventive and Social Medicine and Pathology, Institute of Medical Sciences, Banaras Hindu University, Varanasi-221, IN
1 Department of Preventive and Social Medicine and Pathology, Institute of Medical Sciences, Banaras Hindu University, Varanasi-221, IN
Source
The Indian Journal of Nutrition and Dietetics, Vol 25, No 4 (1988), Pagination: 111-118Abstract
Expectant mothers of any society form the high risk group from the nutritional point of view. Pregnancy is a period of physiological changes and high nutritional demands, in developing countries, the diets of such women are poor and thier reserves are minimum. To meet the needs of growing foetus an expansion of maternal tissues, lot of modifications take place in maternal hormonal system to ensure supply of nutirents to the foetus. If maternal resents are adequate, foetus is well protected from the Inadequate Intake during pregnancy.- Evaluation of Floribunda Rose (Rosa hybrida L.) Cultivars for Landscape Use under Punjab Condition
Abstract Views :156 |
PDF Views:113
Authors
Affiliations
1 Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana - 141004, IN
1 Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana - 141004, IN
Source
Journal of Horticultural Sciences, Vol 8, No 2 (2013), Pagination: 271-275Abstract
The present study was carried out to evaluate floribunda rose cultivars for landscape use under sub-tropical climate of the Punjab. Thirty cultivars were planted in Randomized Block Design, with three replications. Maximum plant height (53.67cm) was recorded in 'Banjaran', while plant-spread, leaf length and leaf breadth were maximum (90.83cm, 12.73cm and 9.10cm, respectively) in 'Brown Velvet'. The cv. Iceberg produced comparatively longer (2.77cm) buds. Flower size was maximum in 'Charleston' (8.37cm). Number of petals per flower was higher in 'Arunima'. Thorn density was found to be higher (42.67 per ten cm i.e., decimeter) in cv. 'St. Boniface' whereas, 'Summer Snow' and 'Ahalya' were thornless. Thorn shape was that of a hook in all the cultivars. Maximum number of flowers per plant, per unit area were recorded in 'Summer Snow' (367.85/m2), which was on par with 'Arunima' (340.32/m2), 'First Edition' (320.75/m2) and 'Thornless Beauty' (328.24/m2). Flower stalk length (82.33cm) and flower duration (141.33 days) were higher in cv. Brown Velvet. The cultivars were also evaluated for their fragrance.Keywords
Floribunda Rose, Evaluation, Landscape.Full Text
- Water Retention and Transmission Characteristics of Containerized Growing Media Amended with Differential Proportions of Compressed Coir Bricks
Abstract Views :234 |
PDF Views:76
Authors
Affiliations
1 Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana 141 004, IN
2 Department of Soil Science, Punjab Agricultural University, Ludhiana 141 004, IN
1 Department of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana 141 004, IN
2 Department of Soil Science, Punjab Agricultural University, Ludhiana 141 004, IN
Source
Current Science, Vol 116, No 9 (2019), Pagination: 1580-1587Abstract
The hydraulic characteristics of growing media play an equally important role as do the architectural properties in the production of ornamental potted plants. The reuse of biological agri-wastes, amended with cocopeat and soil, has potential for ameliorating the hydro-physical environment in growing media substrates, affecting air–water relations. A study was undertaken to evaluate the water retention and transmission characteristics of four biological wastes as base media (farmyard manure (FYM), leaf mould (LM), rice husk ash (RHA) and composted sewage sludge (CSS)) amended with different proportions of soil : coir mixture (0 : 75, 25 : 50, 50 : 25, 75 : 0) respectively. These media mixtures were filled in 3.5 l pots. Utilization of coir <50% (per cent of pot volume) as an amendment in FYM and CSS-based media mixtures improved hydraulic characteristics of pot-growing media. The use of RHA amended with soil : coir was not suitable as a growing medium due to higher relative evaporation rate and higher rate of infiltration. Water retention in terms of maximum water-holding capacity and available water increased with coir addition, the increase being enormous with 75% coir. Infiltration rate of water in the media improved with addition of coir (0–50%), showing a steep increase (4.25–8.10 cm min–1) at highest (75%) proportion of coir. Drainage rate was highest in FYM and LM-based media mixtures.Keywords
Coir Bricks, Hydraulic Characteristics, Infiltration Rate, Pot Media, Water Retention.Full Text
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- Sax, M. S. and Scharenbroch, B. C., Assessing alternative organic amendments as horticultural substrates for growing trees in containers. J. Environ. Hortic., 2017, 35(2), 66–78.
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