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- A. RajaSekhar Reddy
- J. V. Sreenivasa Rao
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- A. Sreenivasulu
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Journals
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Rao, P. S.
- Effect of Seasonal Variation on Rooting Potential of Neem (Azadirachta indica A. Juss)
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Indian Forester, Vol 133, No 9 (2007), Pagination: 1247-1253Abstract
The effect of seasonal variation on ischolar_maining potential of Neem by using mid-cuttings, hardwood cuttings and epicormic shoots was studied at Biotechnoloty Research Centre (A.P. Forest Department), Triupati. The plant harmones such as IBA, IAA, 2.4-D were used alone or in combinations of different concentrations viz., 1000, 2000, 3000 ppm tested in both summer and winter seasons. Roots were observed in all types of branch cuttings after 30 days. During summer (April-May) 95 per cent of ischolar_maining was observed in epicormic shoots when treated with 1000 ppm IBA. However, in mid- and hardwood cuttings only 50% ischolar_maining was observed. During winter season (Nov.-Dec.) the epicormic shoots resulted in 50 per cent of ischolar_maining only. The individual concentrations showed better results as compared to combinations. Higher percentage of ischolar_maining was observed in summer compared to winter season.- Tricotylous Seedlings in Sapindus emarginatus Vahl. (Sapindaceae)
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Indian Forester, Vol 130, No 4 (2004), Pagination: 463-463Abstract
No abstract- Response of Chemical Fertilizers on Eucalyptus tereticornis Clones
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Indian Forester, Vol 128, No 5 (2002), Pagination: 502-508Abstract
The field experiment on response to fertilizers on clones of Eucalyptus tereticornis in forest land of Tirupati , Andhra Pradesh , India revealed that interaction of N , P and K@60 kg of N/ha , 90 kg of P2O5/ha and 60 kg of K2O/ha were most significant on growth parameters than individual effects of N , P and K.- Performance of Teak (Tectona grandis Linn. F.) Clones of Andhra Pradesh
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Indian Forester, Vol 128, No 12 (2002), Pagination: 1288-1294Abstract
Performance of teak bud wood grafts taken from 27 plus trees, representing different Forest Divisions of Andhra Pradesh State were evaluated for stand volume (m3/ha), PAI and MAI (m3/ha/year). The best performing clones (where MAI is more than 8 m3/ha/year) are APNBV-I, APNPMP-2, APSBC-l, APNDG-l and APNPMP-l. Physical characteristics of best performers are described in detail.- Effect of Auxins on Rooting Stem Cuttings of Givotia Rottleriformis Griff. via Hydropit
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Indian Forester, Vol 128, No 3 (2002), Pagination: 266-270Abstract
An experiment was conducted on the effect of auxins on ischolar_maining stem cuttings of Givotia rottleriformis at Srinivasavanam Field Research Station, Tirupati. Three different hormones (IAA,IBA and NAA) were tried with 4 different concentrations (500,1000,3000 and 5000 ppm). Rooting was observed after 45 days in all the treated cuttings. IBA 3000 ppm treated cuttings showed highest ischolar_maining percentage (77.8) and it was at par with IBA 5000 ppm and differs significantly from others. IAA 500 ppm treated cuttings showed least ischolar_maining percentage (33.3). No ischolar_maining was observed in control.- Assessment of Casuarina equisetifolia Forst., Provenance Trial (inland) Taken up in Andhra Pradesh
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p=0.05level of significance, while axis persistence has showed no significant difference. Genetic analyses showed heritability estimates for the characters axis persistence and straightness (below 15%) while moderate estimates of heritability for height, GGL and GBH (between 40.60%). It is suggested that selections could be made from superior trees of individual provenances in order to have broad base for genetic improvement of Casllarina equisetifolia in Andhra Pradesh.
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Indian Forester, Vol 127, No 3 (2001), Pagination: 295-302Abstract
The International Provenance trial of Casuarina equisetifolia was established in 1996, with 27 provenances in Regional Forest Research Centre, Rajahmundry, East Godavari District, Andhra Pradesh. The Australian Tree Seed Centre of CSIRO, Canberra, Australia coordinated in collection of seed throughout the natural range as well as from land race populations of Casuarina. The Analyses of Variance of data indicated significant difference among provenances for height, GGL, GBH and straightness ap=0.05level of significance, while axis persistence has showed no significant difference. Genetic analyses showed heritability estimates for the characters axis persistence and straightness (below 15%) while moderate estimates of heritability for height, GGL and GBH (between 40.60%). It is suggested that selections could be made from superior trees of individual provenances in order to have broad base for genetic improvement of Casllarina equisetifolia in Andhra Pradesh.
- Tricotyledony in Prosopis cineraria (L.) Druce. (Mimosaceae)
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Indian Forester, Vol 127, No 5 (2001), Pagination: 591-592Abstract
No abstract- Occurrence of Albino Seedlings in Samania saman (jACQ.) Merrill. (Mimosaceae)
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Indian Forester, Vol 127, No 6 (2001), Pagination: 727-728Abstract
No abstract- Heritability Estimation in Casuarina Progeny-cum-family Test Plot -1996
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Indian Forester, Vol 127, No 7 (2001), Pagination: 749-754Abstract
At Regional Forest Research Centre, Rajahmundry, East Godavari District, Andhra Pradesh the genetic improvement of Casuarina was commenced in 1994 and to date, considerable work under this project has been done, Candidate Plus Trees have been selected and established progeny tests. The progeny test comprises 16 families (16 CPTs) selected in North Coastal districts of Andhra Pradesh. In progeny test, the data was recorded at 24 months age for plant height, girth at ground level, girth at breast height, axis-persistence and straightness which showed great variation among the families. The characters Ggl, Gbh and straightness are showing significance at P⋍ O.05 level of significance. The broad sense heritability and genetic advance were calculated for all the parameters recorded and are presented. The interim results of this trial suggests that the further selections can bc made after monitoring the experiments for 3 to 4 years.- Effect of Gibberellic Acid (GA3) on Germination of Givotia rottleriformis Griff., Seeds
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Indian Forester, Vol 127, No 8 (2001), Pagination: 944-946Abstract
No abstract- Root Trainer Vs. Stump Planting of Teak - a Comparative Study
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Indian Forester, Vol 127, No 11 (2001), Pagination: 1289-1293Abstract
No abstract- Evaluation of International Teak Provenance Trial Plot in North East Andhra Pradesh
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Indian Forester, Vol 127, No 4 (2001), Pagination: 415-422Abstract
The International Provenance Trial Plot sponsored by FAO/DANIDA in collaboration with Andhra Pradesh Forest Department was established in 1973 at Maredumilli, North-East Andhra Pradesh, with 10 seed sources and one local seed source as control. The Analysis of Variance of data on 26 year old trees indicated non-significant differences among provenances for height, clear bole height, gbh, Crown scores while significant differences for survival rate, straightness and roundness of stem and health characteristics. Height and GBH growth of provenances ranged from 14.33 to 22.33 m and 42.80 to 69.78 cm and were comparable to site quality II/III reported for Teak in India. Among the indigenous seed sources 'Konni' (Kerala) and exotic sources 'Ban Mae Pan' (Thailand) were the best for all the parameters studied. Genetic Analysis showed low heritability (broad sense) estimates for the characters on height, gbh, health, crown and branching characters (below 30 per cent), while moderate to high estimates of heritability for straightness (32.85 per cent) and roundness of stems (39.46 per cent) and clear bole height (60.50 per cent) characters. It is suggested that selections could be made from superior trees of individual provenances in order to have a broad base for genetic improvement of Teak in Andhra Pradesh.- Albinism in Mundulea sericea (Willd.) Chevel. (Papilionaceae)
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Indian Forester, Vol 127, No 4 (2001), Pagination: 480-482Abstract
No abstract- Effect of Pisolithus tinctorius on Growth of Eucalyptus tereticornis Seedlings in Nursery Conditions
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Indian Forester, Vol 126, No 2 (2000), Pagination: 194-196Abstract
Fertilisation of forest soils with chemical fertilisers is not only expensive but also results in environmental pollution. Therefore, it has become essential to go for a cheaper, natural, effective and environmentally safer resources such as biofertitisers. About 95-99% of soil phosphorus occurs in fohns that is not directly available to plant ischolar_mains. Further, its mobility in soils is very low. In such conditions mycorrhiza through symbiotic association offers an effective and long lasting remedy by solubilising unavailable phosphorus and converting them into available form, thereby acting as 'biofertilisers'. Pisolithus tinctorius is an ectomycorrhizal fungus living symbiotically with the ischolar_mains of Eucalyptus. Fruiting bodies of Pisolithus tinctorius were collected from different places and different strains were isolated. Axenic cultures were established on solid and liquid MMN media. From the axenic culture, mycobeads were prepared and applied to the Eucalyptus seedlings. Uninoculated seedlings were maintained as control under identical conditions to compare the growth the biomass. The fungal infected seedlings have better growth and ischolar_main development.- Regenerated Shoot Number and Coppicing Ability of Two Year Old Eucalyptus tereticornis Stumps of Different Girth Classes
Abstract Views :198 |
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Indian Forester, Vol 126, No 7 (2000), Pagination: 721-726Abstract
Stumps of different girth classes of Bhadrachalam clone-l of Eucalyptus tereticornis of the same age were selected and coppiced. The coppice shoots were collected four times, each at 15 days interval separately from each of the girth classes and counted. It was observed that with the increase in the girth of the coppiced stump, the number of shoots produced per stump increased significantly. However no significantly differences were observed between the harvests. Thus it can be concluded from this study that the ability to produce coppice shoots may, in some way be related to the size of the donor tree, which may be due to increased coppicing ability or due to greater carbohydrate reserves in stumps of greater girth.- Root and Shoot Growth of Eucalyptus Cuttings as Affected by the Position of the Rejuvenated Shoot on the Stock Plant
Abstract Views :247 |
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Indian Forester, Vol 126, No 8 (2000), Pagination: 890-894Abstract
An experiment was conducted at Srinivasavanam Field Research Station, Tirupati, India to find out whether the position of the rejuvenated shoot on the Eucalyptus stock plant exerted any influence on the ischolar_main and shoot growth of cuttings. The results revealed that the area of the largest leaf, percentage of sprouting buds, ischolar_main length, fresh weight and moisture content of ischolar_mains showed significantly higher values in respect of cuttings taken from coppice shoots of coppiced stump 7-13 cm above the ground. On the contrary, survival percentage, number of shoots, number ofleaves and number of ischolar_mains per cutting did not differ significantly among the treatments. Hence it is ideal to harvest the juvenile coppice shoots from 7-13 cm height on the coppiced stump to produce good quality clones.- Macro-propagation of some Important Medicinal Plants of Andhra Pradesh
Abstract Views :223 |
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Indian Forester, Vol 126, No 12 (2000), Pagination: 1265-1269Abstract
Macro-propagation of medicinal plants Viz., Andrographis paniculata, Gymnema sylvestre, Hemidesmus indicus, Tinospora cordifolia and Tinospora tomentosa were tried in Regional Forest Research Centre, Rajahmundry, Andhra Pradesh using ischolar_main inducing hormones (IBA, NAA, IAA). The study indicated that these plants can be successfully propagated without any hormone (>70% ischolar_maining) but the ischolar_maining was slow and not profuse. The hormonal influence on ischolar_maining of these selected medicinal herbs along with concentration of hormone is presented.- Variation in Rooting Response in Fourteen Clones of Gmelina arborea Roxb.
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Indian Forester, Vol 132, No 8 (2006), Pagination: 967-970Abstract
The ischolar_maining response in fourteen indigenous clones of Gmelina arborea, under intermittent mist conditions was studied. Leafless cuttings of 1-15 cm diameter and 15-20 cm length were prepared with one of two nodes. The cuttings were treated with 0.1% bavistin for 10 minutes. The treated cuttings were given quick dip in ischolar_main initiating hormone, i.e., Indole 3-Butyric Acid at 1000ppm concentration in talc base. Clone 136 showed highest percentage of ischolar_maining (85), while clone No. 130 showed the least performance (40). Significant differences were observed in ischolar_maining response among the different clones.- Effect of Vermiwash Solution on over-aged Seedlings in Root Trainer Nursery
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Indian Forester, Vol 132, No 7 (2006), Pagination: 795-798Abstract
An experiment conducted at Regional Forest Research Centre, Rajahmundry, Andhra Pradesh to study the effect of Vermiwash solution revealed that vermiwash can be used as "Fertigate" for maintenance of over-aged seedlings in ischolar_main trainers.- Rooting of Stem Cuttings of Wrightia tinctoria (Roxb.) R.Br. : an Important Medicinal Plant
Abstract Views :242 |
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Indian Forester, Vol 125, No 4 (1999), Pagination: 427-428Abstract
No abstract- Albinism in Artocarpus integrifolia Linn. F. - a Case Study
Abstract Views :315 |
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Indian Forester, Vol 125, No 11 (1999), Pagination: 1095-1098Abstract
Albino seedlings to the extent of 0.0004% are noticed in Artocarpus integrifolia. None of the albino seedlings survive, mainly because of chlorophyll deficiency which is probably a resultant of natural selfing. Seeds collected from particular locality alone showed albinism.- Biotechnological Approaches for Sandalwood (Santalum album L.) Micropropagation
Abstract Views :342 |
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Indian Forester, Vol 118, No 1 (1992), Pagination: 48-54Abstract
Advancements in Biotechnological research has opened up new avenues for rapid multiplication of forest trees. The paper presented here on micropropagation of sandalwood has described various experiments conducted during the last decade in our laboratory. The tree sandalwood has proved to be a very versatile material for tissue culture research. Success has been achieved in regenerating plantiets from somatic embryos differentiated from callus tissues originating from hypocotyl, stem and protoplasts cultures. Plantlets could be regenerating from synthetic seeds prepared by encapsulating somatic embryos in a proper matrix. Viable plantlets were recovered from somatic embryos grown in a bioreactor.- Non-cereal Foods: Tamarind Seed Kernels as Food and Fodder
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Indian Forester, Vol 78, No 1 (1952), Pagination: 36-38Abstract
No abstract- Tubers of Dioscorea hispida Dennst
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Indian Forester, Vol 78, No 3 (1952), Pagination: 146-152Abstract
No abstract- Non-cereal Foods: Tubers of Dioscorea species
Abstract Views :197 |
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Indian Forester, Vol 79, No 10 (1953), Pagination: 568-571Abstract
No abstract- Sir John Lionel Simonsen
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Indian Forester, Vol 83, No 11 (1957), Pagination: 688-692Abstract
No abstract- Non-Cereal Foods: Pueraria tuberosa as Food and Fodder
Abstract Views :188 |
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Indian Forester, Vol 84, No 5 (1958), Pagination: 281-283Abstract
No abstract- Processing of Crude Camphor on a Cottage Scale
Abstract Views :175 |
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Indian Forester, Vol 86, No 8 (1960), Pagination: 475-481Abstract
No abstract- Coleus vettiveroides
Abstract Views :442 |
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Indian Forester, Vol 87, No 4 (1961), Pagination: 270-272Abstract
No abstract- Utilization of "Exhausted" Agarwood in the Manufacture of Agarbatties
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Indian Forester, Vol 87, No 9 (1961), Pagination: 551-552Abstract
No abstract- The Indigenous Agar Oil Industry of Assam and Suggestions for its Improvement
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Indian Forester, Vol 85, No 1 (1959), Pagination: 51-55Abstract
No abstract- Further Studies on Katha Manufacture at the forest Research, Institute, Dehra Dun
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Indian Forester, Vol 89, No 5 (1963), Pagination: 368-372Abstract
No abstract- Label Paste from T.K.P.
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Indian Forester, Vol 89, No 10 (1963), Pagination: 686-689Abstract
No abstract- Shelterbelt Plantations of Prosopis juliflora on the Hagari River Banks in Kurnool District
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Indian Forester, Vol 90, No 10 (1964), Pagination: 658-661Abstract
No abstract- Preservative Treatment of Sandal Sapwood (Santalum album L.) for Small-scale Industries
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Indian Forester, Vol 91, No 4 (1965), Pagination: 216-217Abstract
no abstract- Behaviour of Bamboo in Powder form, when Treated with Wood- Preserving Chemicals
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Indian Forester, Vol 91, No 11 (1965), Pagination: 815-817Abstract
no abstract- Industrial Utilization of Sandal Sapwood
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Indian Forester, Vol 92, No 1 (1966), Pagination: 16-18Abstract
no abstract- Tree Bank for every Village
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Indian Forester, Vol 92, No 10 (1966), Pagination: 632-633Abstract
no abstract- Fabricated Cross Cutting Saw
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Indian Forester, Vol 94, No 10 (1968), Pagination: 766-768Abstract
no abstract- Accelerated Germination of Sandal Seed
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Indian Forester, Vol 95, No 3 (1969), Pagination: 158-159Abstract
no abstract- Eucalyptus 'Hybrid' - a New Source of Cineole
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Indian Forester, Vol 96, No 5 (1970), Pagination: 347-350Abstract
The leaf oil of certain trees of Eucalyptus hybrid bas been shown to contain a very high percentage of cineole (63.2-72.3%). In this respect and also in almost all other characteristics the oil compares favourably with the Australian Eucalyptus globulus oil and very much more with the Indian Eucalyptus globulus oil. This particular strain of the hybrid can, therefore, be an additional source for the medicinal eucalyptus oil, with the added advantage that the trees can grow successfully under diverse conditions of climate, soil and rainfall.- Studies on Sandal Spike Incidence of the Spike Disease Versus the Major and Minor Nutrient Status of the Soils of Sandal Growing Regions
Abstract Views :210 |
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Indian Forester, Vol 99, No 11 (1973), Pagination: 645-650Abstract
A study of the major and minor nutrient status of the soils of spike-affected and spike-free sandal growing regions has shown that deficiency of either the major nutrients, N,P,K and Ca, or the minor nutrients, Cu, Zn, Mn, Mo and Co in the soils of the spike-affected sandal regions is not serving as a pre-disposing factor for the onset of sandal spike disease. Khan and Yadav (1962) reported that calcareous soils with a low amount of available nutrients were related to the incidence of spike disease in sandal. The soils of the Mysore State are generally not calcareous in nature, but spike disease exists in many of the districts of the State. It has, therefore, given rise to a doubt as to whether the composition of the soil bas really anything to do with the incidence or otherwise of the spike disease in sandal. As long ago as 1955, Muthanna reported that application of minor elements did not show any remedial effect on the sandal affected by spike disease, thus showing that the latter is not traceelement deficiency disease. That the disease is not a deficiency disease is further proved by the fact that it is transmissible (Coleman, 1917; Sreenivasaya and Gopalaswami Naidu, 1928), while deficiency diseases are not. The question, however, remains as to whether the soil status is serving as a pre-disposing factor for the onset of the disease, though not the cause for it. Hence experiments have now been conducted with a view to settling this question, examining the soil samples from some of the districts of the healthy sandal areas (Bellary, Dharwar and Shimoga), and some of the districts of the spiked sandal areas (Kolar, Tumkur and Bangalore) in the Mysore State. From each of the districts, a suitable forest region was chosen, and soil samples were taken from two spots, collecting them from three different layers (0-25 cm, 25-55 cm, 55-85 cm) after clearing the surface soil. The analysis of the soil samples for pH, major nutrients (N,P,K and Cal and minor nutrients (Cu, Zn, Mn, Mo and Co) was done following the methods described by Jackson (1967) and Holmes (1945). Since the pH of the soils of the Mysore State ranges from 5.6 to 6.8 at which range the nutrients (major and minor) are well available, only the total status of these nutrients has been determined. The pH was determined at the moisture saturation percentage of the soils according to the procedure described by Jackson (1967).- Note on the Extension of Cretaceous Basin in Tirupattur Area Tiruchirapalli District, Tamil Nadu
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Authors
P. S. Rao
1,
R. Sundaram
2
Affiliations
1 4313, Anna Nagar, Madras-40, IN
2 5/36, C.P.W.D. Quarters, Indira Nagar, Madras 600024, IN
1 4313, Anna Nagar, Madras-40, IN
2 5/36, C.P.W.D. Quarters, Indira Nagar, Madras 600024, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 19, No 5 (1978), Pagination: 231-232Abstract
No Abstract.- Planktonic Foraminifera from a Quaternary Deep Sea Core from the Southern Arabian Sea
Abstract Views :176 |
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Authors
Affiliations
1 National Institute of Oceanography, Dona Paula, Goa 403 004, IN
1 National Institute of Oceanography, Dona Paula, Goa 403 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 34, No 4 (1989), Pagination: 393-397Abstract
An investigation on planktonic foraminifera and calcium carbonate content of a box core collected at a depth of 2556 m from the southern part of the Arabian sea indicates faunal changes depicting Quaternary climatic fluctuations. Based on the study the Last Glacial Maxima (LGM) boundary is placed at 65 cm and below LGM. Three warm and two cold episodes are identified.- Morphology of a Coral Bank, Western Continental Shelf of India : A Multibeam Study
Abstract Views :238 |
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Authors
Affiliations
1 National Institute of Oceanography, Dona Paula, Goa-403 004, IN
1 National Institute of Oceanography, Dona Paula, Goa-403 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 41, No 1 (1993), Pagination: 33-37Abstract
Morphology of a living coral bank (Gaveshani Bank) is described using multibeam swath bathyrnetric survey system Hydrosweep. The bank has a height of 42 m, length of 2 km and a maximum width of 1.66 km, with steep flanks and flat top. It has a north-souh orientation and occupies an arca of about 3 sq km. A 100% coverage obtaincd in the present study enables us to determine the exact morphology of the bank. A comparison with the single beam echosounding data reveals that the dimensions (length and breadth) and areal extension of the bank are much larger than previously known.Keywords
Coral Bank, Morphology, Multibeam Bathymetry, Western Continental Shelf of India.- International Symposium on Geology and Geophysics of the Indian Ocean (GIO-96), 21-25 October, 1996
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Authors
Affiliations
1 National Institute of Oceanography, Dona Paula, Goa - 403 004, IN
1 National Institute of Oceanography, Dona Paula, Goa - 403 004, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 49, No 4 (1997), Pagination: 449-451Abstract
No Abstract.- A Study on Developing Strategies for Employee Retention in IT Industries with Special Reference to Mumbai
Abstract Views :308 |
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Authors
Affiliations
1 Mumbai University, Mumbai, MS, IN
2 JJTU, Rajasthan, IN
1 Mumbai University, Mumbai, MS, IN
2 JJTU, Rajasthan, IN
Source
We'Ken- International Journal of Basic and Applied Sciences, Vol 2, No 2 (2017), Pagination: 32-36Abstract
Effective Employee Retention is a systematic effort by employees to create and foster an environment that have policies and practices in place that address their diverse needs. A strong retention strategy becomes a powerful recruitment tool .It is known fact that retaining best employees ensures customer satisfaction, increased product sales, satisfied colleagues and reporting staff. Various estimates suggest that losing a middle manager in most organizations cost up to five times of his salary. According to American Society of Training and Development, organizations that invested the most in training had higher gross margins and income per employees. The cost of replacing an employee who leaves has been estimated by various studies to be between 70 and 200% of that workers annual salary. This study tries to elaborate the various strategies and come to an outcome to retain the employees on the basis of findings.Keywords
Attrition, Attrition Rates, Employee Retention, IT Industry.References
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- Subhasreekar, and K C Misra (2013), “Nexus Between Worklife Balance Practices And Employee Retention-The Mediating Effect Of Supporting Culture”, Asian Social Science, ISSN No: 1911-2017,Volume 9, Issue 11, pp63-69.
- Sultana Nazia and Bushra Begum(2013), “Employee Retention Practices In Indian Corporates. A Study Of Selected Mnc's”, International Journal Of Engineering And Management Sciences, ISSN No :2229-600X, Volume 4, Issue 3, pp361-368.
- Optimization of MIG Welding Process Parameters:A Review
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1 Department of Mechanical Engineering, National Institute of Technical Teachers Training & Research, Chandigarh -160019, IN
1 Department of Mechanical Engineering, National Institute of Technical Teachers Training & Research, Chandigarh -160019, IN
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Research Journal of Engineering and Technology, Vol 8, No 3 (2017), Pagination: 273-276Abstract
MIG welding, also known as Metal Inert Gas welding is being widely used in industries due to its economic advantage. Quality of the welded joint is the main concern, which is a difficult task if input process parameters taken are not proper or well optimized. So, the detailed review of various design of experiments and optimization techniques have been discussed in this paper for obtaining optimal input process parameters. The output parameters such as tensile strength, microhardness, weld pool geometry etc. depend upon the input parameters i.e. wire feed rate, welding current, voltage of arc, gas flow rate, welding speed etc. These parameters are optimized by using various experiment design techniques like Response Surface Methodology, Taguchi, Factorial design. Optimization is done by using Grey Relational Analysis, Artificial Neural Network, Particle Swarm Optimization. Analysis of Variance is used for checking the model adequacy. Mathematical models are generated using regression analysis.Keywords
Optimization, MIG Welding, Weld Pool Geometry, Microhardness.References
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- Characterization and Experimental Investigation on Mechanical Behavior of B4C and RHA Reinforced Aluminium Alloy 7075 Hybrid Composite Using Stir Casting
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Authors
Affiliations
1 Department of Mechanical Engineering, National Institute of Technical Teachers Training and Research (NITTTR), Chandigarh -160019, IN
2 Department of Mechanical Engineering, Chandigarh College of Engineering and Technology (Degree Wing) Chandigarh -160019, IN
1 Department of Mechanical Engineering, National Institute of Technical Teachers Training and Research (NITTTR), Chandigarh -160019, IN
2 Department of Mechanical Engineering, Chandigarh College of Engineering and Technology (Degree Wing) Chandigarh -160019, IN
Source
Research Journal of Engineering and Technology, Vol 8, No 3 (2017), Pagination: 179-186Abstract
This paper is going to deal with the effect of Boron Carbide (B4C) and Rice Husk Ash (RHA) in AA7075 Hybrid Composite. To study the effect of the addition of reinforcement on AA 7075, the fabrication is done by using bottom pouring type stir casting machine.K2TiF6isadded as filler to avoid the wettability problem of liquid molten aluminium alloy 7075 and B4C.The results shows that the hardness of the hybrid composite is increased with increase in the wt. % of reinforcements. Scanning Electron Microscopy is used to confirm the microstructure of composite and distribution of reinforcements. The results of Energy Dispersive Spectroscopy analysis is used to confirm the elements in Al 7075/B4C/RHA hybrid composite and some useful conclusions are made.Keywords
Stir Casting, Aluminium Alloy, Scanning Electron Microscopy, Energy Dispersive Spectroscopy.References
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- Retrieved from http://www.azom.com/article.aspx?ArticleID=75
- A Significant Shift in Particulate Organic Matter Characteristics during Flooding of River Krishna, Eastern Peninsular India
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Authors
Affiliations
1 CSIR-National Institute of Oceanography, Dona Paula, Goa 403 004, IN
2 A-6, Oceanis Society, Bambolim, Goa 403 202, IN
3 Flat No. 502, First Block, Kamat Riviera, Caranzalem, Goa 403 002, IN
4 CSIR-National Institute of Oceanography, Regional Centre, Visakhapatnam 530 017, IN
5 National Institute of Animal Biotechnology, Hyderabad 500 049, IN
1 CSIR-National Institute of Oceanography, Dona Paula, Goa 403 004, IN
2 A-6, Oceanis Society, Bambolim, Goa 403 202, IN
3 Flat No. 502, First Block, Kamat Riviera, Caranzalem, Goa 403 002, IN
4 CSIR-National Institute of Oceanography, Regional Centre, Visakhapatnam 530 017, IN
5 National Institute of Animal Biotechnology, Hyderabad 500 049, IN
Source
Current Science, Vol 118, No 3 (2020), Pagination: 461-467Abstract
Extremely heavy rainfall over a small, semi-arid section of the Indian Peninsula in October 2009, together with release of water from dams resulted in very severe flooding in River Krishna. The sources and type of organic matter during and after the floods were studied by analysing suspended particulate matter (SPM) for organic carbon (C), total nitrogen (N) and isotopic composition of C (δ13Corg). The δ13Corg varied from –21.4‰ during the initial heavy flood phase to –27.1‰ in the final receding phase. Discharge of terrestrial carbon (–21.4‰ to –23.5‰) from mixed sources with high C/N ratios (14–19) during the initial phase of the flood originated from the semi-arid section of the river. The light carbon (–25.5‰ to –27.1‰) with low C/N ratios (7.2–9.5) in the receding phase of the flood was from local C3-rich organic debris from the deltaic regions along with phytoplankton from aquatic sources. Since the average suspended sediment discharge of River Krishna has decreased from 68 mt to less than 0.1 mt due to construction of dams and barrages, it appears that sediments and organic matter presently being delivered to the oceans are mainly during flood events, and the type of organic matter delivered depends on the nature of the soil where high rainfall is received.Keywords
Carbon Isotopes, Extreme Rainfall Events Rivers, Floods, Particulate Organic Matter.References
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