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Journals
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Rajagopal, K.
- Nutrient Cycling in Young Teak Plantation II - Biomass Production and Nutrient Cycling
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Indian Forester, Vol 135, No 5 (2009), Pagination: 600-610Abstract
Biomass production and nutrient cycling studies were carried out in a young teak (Tectona grandis L. f.) plantation of five year old (density 2,500 trees ha-1). The trees attained an average girth and height of 23.1cm and 7.6m, respectively and the above ground biomass (agb) amounted to 76.9 t/ha, of which stem wood contributed 60%. The percentage of ischolar_main to agb was 20.5%. Investigations on nutrient content in the standing crop have shown that the per cent concentration of nitrogen (N), phosphorous (P), potassium (K), calcium (Ca) and magnesium (Mg) were highest in leaf. But on unit area basis, wood accumulated the major portion (39 to 60%) of all nutrients. Among the nutrients, maximum accumulation was accounted for Ca (1,619 kg ha-1) and the minimum for P (178 kg ha-1). With reference to nutrient return via litter, it was observed that the total litter produced was 4,574 kg ha-1 and the nutrients returned amounted to 46 kg ha-1 N; 3 kg ha-1 P; 39 kg ha-1 K; 86 kg ha-1 Ca and 21 kg ha-1 Mg. Studies on interception of rainfall and nutrient return through rain-wash have shown that among the nutrients return was highest for Ca (1.87 kg ha-1) followed by Mg (1.09 kg ha-1), K (0.98 kg ha-1), N (0.36 kg ha-1) and the least for P (0.11 kg ha-1). Nutrient cycling on an annual basis was worked out for the plantation and it was found that of the total uptake of various nutrients (178kg N ha1 yr1, 248 kg K ha-1 yr-1, 387 kg Ca ha-1 yr-1 and 109 kg Mg ha-1 yr-1, 74 to 91% was retained in the non-photosynthetic biomass and the rest returned to soil. These results were compared with nutrient cycling in 20-year-old teak plantation and found that at younger age teak retains more nutrients in its biomass. As the plantation gets older, it retains less and returns more quantity of nutrients. These results suggest that as the age of plantation increases, teak becomes an eco-friendly species by not adversely affecting the ecology of the site.Keywords
Nutrient Cycling, Young Teak Plantation, Coimbatore, Tamil Nadu- Nutrient Cycling in Young Teak Plantation I - Restitution of Nutrients through Litter and Rain-wash
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Indian Forester, Vol 131, No 2 (2005), Pagination: 221-228Abstract
Studies on different pathways of nutrient return through litterfall and rain-wash were carried out in a young teak (Tectona grandis L. f.) plantation at five years age (Density 2500 trees/ha). The total litter produced was 4574 kg/ha and the nutrients returned amounted to : nitrogen - 46kg/ha; phosphorus- 3 kg/ha; potassium 39kg/ha; calcium 86kg/ha; and magnesium 21kg/ha. Studies on interception of rainfall have shown that, the total incident rainfall recorded for this study during the year 2000 was 1013 mm. Of which, 28.97% was intercepted by the canopy, while 7.66% was accounted for stemflow and 63.37% for through fall. With regards to nutrients return through rain-wash, it was found that, throughfall returned more quantities of all nutrients, than stemflow. Of the total return (litter + rain wash) of various nutrients, maximum amount (kg/ha) of return was accounted for calcium (87.40) followed by nitrogen (46.56), potassium (40.31), magnesium (22.13), and the least for phosphorus (3.31). Among these two pathways of nutrients return, litterfall contributed greater amount of all nutrients (from 95 to 99%), when compared to rain wash (0.8 to 4.9%). These results were compared and discussed with nutrients return and nutrient cycling in 20 years old teak plantation and suggest intensive silvicuItural practices in teak plantations during the initial stages of growth to enhance the productivity.- Comparative Studies on Decomposition of Leaf Litter in Teak Plantation
Abstract Views :315 |
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Indian Forester, Vol 131, No 11 (2005), Pagination: 1421-1428Abstract
Comparative studies on litter decomposition employing two methods - bag and non-bag, were carried out under teak plantation of age 30 years. Though a steady decline in decomposition of the litter occurred in both the cases, the rate of decomposition was faster in the non-bag method than that of the bag. The un-decomposed litter after a period of one year was 19.43% in non-bag method against 49.8% in the bag method. The decomposition coefficient (k) was higher in non-bag (1.638) when compared to bag method (0.697). With regard to nutrients in the decomposing litter, the concentration of different nutrients differed as the decomposition progressed. Among the nutrients (N, P, K, Ca and Mg), the release of potassium was faster when compared to others. Between the two methods the decomposition co-efficient (k) was greater for all nutrients in non-bag method.- Fungal Endophytes (Phellophytes) of some Tropical Forest Trees
Abstract Views :213 |
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Indian Forester, Vol 126, No 2 (2000), Pagination: 165-170Abstract
The periderm tissue of ten tree species growing in a dry deciduous forest and a montane evergreen forest of the Western Ghats was sampled for the presence of filamentous fungi (phellophytes). These trees, belonging to six families, yielded a total of 963 phellophyte isolates that could be grouped in to 36 species. Of these, four were Ascomycetes, one belonged to Coelomycetes, and eleven were Hyphomycetes. The rest were sterile mycelial forms. Alternaria alternata and a Fusarium sp. (49) could be isolated from more number of tree species. Some phellophytes were unique to certain tree species. The mean density of colonisation was maximum for the bark of Rhododendron arboreum. Twenty three isolates of phellophytes occurred as endophytes in living leaf tissues of the trees.- Herbaceous Undergrowth in some forest Habitats in Nilgiris
Abstract Views :177 |
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Indian Forester, Vol 113, No 9 (1987), Pagination: 599-608Abstract
The herbaceous undergrowth under natural sholas was found qualitatively most rich and unique species composition. Eucalyptus planlatlon. Supported a good undergrowth both qualitatively and quantitatively, while pines have Much less undergrowth. A good grass cover Was found under Eucalyptus with a biomass of 998.6 ± 65.3 kg ha-1; tbe total biomass (kg ha-1) of herbs under the three forest covers were 445.8 ± 55.7 (Sbolas), 1135.1 ± 484 (Eucalyptus) and 54.7 ± 8.85 (plnes).- Study of the Performance, Emission and Combustion Characteristics of a Diesel Engine Using Sea Lemon Oilbased Fuels
Abstract Views :465 |
PDF Views:248
Authors
Affiliations
1 Dept. of Mechanical Engg., Lakireddy Bali Reddy College of Engg., Mylavaram, Krishna Dt., Andhra Pradesh, IN
2 Department. of Mechanical Engineering., JNTU College of Engg. , Hyderabad, IN
3 Department of Mechanical Engineering, JNTU College of Engineering , Hyderabad, IN
1 Dept. of Mechanical Engg., Lakireddy Bali Reddy College of Engg., Mylavaram, Krishna Dt., Andhra Pradesh, IN
2 Department. of Mechanical Engineering., JNTU College of Engg. , Hyderabad, IN
3 Department of Mechanical Engineering, JNTU College of Engineering , Hyderabad, IN
Source
Indian Journal of Science and Technology, Vol 2, No 4 (2009), Pagination: 43-47Abstract
Experiments were conducted to study the performance, emission and combustion characteristics of a DI diesel engine using sea lemon oil-based fuels. In the present work, sea lemon oil and sea lemon oil methyl ester are tested as diesel fuels in diesel engine in neat form. The reduction in NOx emission and an increase in smoke, hydrocarbon and CO emissions were observed for Neat sea lemon oil compared to those of standard diesel. From the combustion analysis it was found that ignition delay was slightly more for both the fuels tested compared to that of standard diesel. The combustion characteristics of sea lemon oil and its methyl ester closely followed those of standard diesel.Keywords
Biofuel, Sea Lemon Oil, Diesel Engine, EnergyReferences
- Agarwal AK (2007) Biofuels (alcohols and biodiesel) applications as fuels for internal combustion engines. Prog. in Energy & Combustion Sci. 33, 233–271.
- Ali Y and Hanna MA (1994) Alternative diesel fuels from vegetable oils. Biores. Technol. 50, 153–163.
- Altin R, Cetinkaya S and Yucesu HS (2001) The potential of using vegetable oil fuels as fuel for diesel engines. Energy Conversion &Mangt. 42, 529–538.
- Babu K and Devarajane G (2003) Vegetable oils and their derivatives as fuels for CI engines: an overview. Soc. Automotive Engrs. 406– 418 (paper no. 2003-01-0767).
- Barsic NJ and Humke AL (1981) Performance and emissions characteristics of a naturally aspirated diesel engine with vegetable oil fuels. Soc. Automotive Engrs.1173–1187 (paper no 810262).
- Bhattacharyya S and Reddy CS (1994) Vegetable oils as fuels for internal combustion engines: a review. Silsoc Res. Instt. 57, 157–166.
- Cheng AS, Upatnieks A and Mueller CJ (2006) Investigation of the impact of biodiesel fuelling on NOx emissions using an optical direct injection diesel engine. Intnl. J. Engine Res. 7, 297–318.
- Ghadge SV and Raheman H (2005) Biodiesel production from mahua (Madhuca indica) oil having high free fatty acids. Biomass & Bioenergy. 28, 601–605.
- Lapuerta M, Armas O and Fernández Rodríguez J (2008) Effect of biodiesel fuels on diesel engine emissions. Prog. Energy & Combustion Sci. 34, 198–223.
- Leung DYC and Guo Y (2006) Transesterification of neat and used frying oil: optimization for biodiesel production. Fuel Processing Technol. 87, 883–890.
- Meher LC, Vidya Sagar D and Naik SN (2006) Technical aspects of bio-diesel production by transesterification — a review. Renewable & Sustainable Energy Rev. 10, 248–268.
- Murayama T, Oh T, Miyamoto N and Chikahisa T (1984) Low carbon flower buildup, low smoke, and efficient diesel operation with vegetable oils by conversion to monoesters and blending with diesel oil or alcohols. Soc. Automotive Engrs. 5.292–5.302 (paper no. 841161).
- Raheman H and Ghadge SV (2007) Performance of compression ignition engine with mahua (Madhuca indica) biodiesel. Fuel. 86, 2568–2573.
- Rakopoulos CD, Antonopoulos KA, Rakopoulos DC, Hountalas DT and Giakoumis EG (2006) Comparative performance and emissions study of a direct injection diesel engine using blends of diesel fuel with vegetable oils or biodiesels of various origins. Energy Conversion & Mangt. 47, 3272–3287.
- Sahoo PK, Das LM, Babu MKG and Naik SN (2007) Biodiesel development from high acid value polanga seed oil and performance evaluation in a CI engine. Fuel. 86, 448–454.
- Senthil Kumar M, Ranesh A and Naglingam B (2003) An experimental comparison of methods to use methanol and Jatropha oil in a compression ignition engine. Biomass & Bioenergy. 25, 309–318.
- Sinha S and Agarwal AK (2006) Experimental investigation of the combustion characteristics of a biodiesel (rice–bran oil methyl ester)-fuelled direct-injection transportation diesel engine. Proc. Instn. of Mech. Engrs. Part D, J. Automobile Engg. 221, 1575–1583.
- Srivastava A and Prasad R (2000) Triglycerides-based diesel fuels, Renewable & Sustainable Energy Rev. 4, 111–133.
- Direct Regeneration and in Vitro Flowering of Scoparia dulcis L.
Abstract Views :365 |
PDF Views:130
Authors
Affiliations
1 Department of Biotechnology, Vel’ s University, Pallavaram, Chennai 600 117, IN
2 Department of Botany, Madras Christian College, Chennai 600 059, IN
1 Department of Biotechnology, Vel’ s University, Pallavaram, Chennai 600 117, IN
2 Department of Botany, Madras Christian College, Chennai 600 059, IN
Source
Indian Journal of Science and Technology, Vol 2, No 5 (2009), Pagination: 55-57Abstract
This study reports a simple micropropagation protocol and thereby rapid multiplication of the useful medicinal plant- Scoparia dulcis L. Single node explants were inoculated on basal MS medium containing 3% (w/v) sucrose, supplemented with different concentrations and combinations of 6-benzylaminopurine (BAP), kinetin (KN), indole-3-acetic acid (IAA), indole-3-butyric acid (IBA) and Naphthalene acetic acid (NAA) for direct plant regeneration. Maximum numbers of shoot (~22) were observed on the medium containing 0.5 mg/l BAP and 0.25 mg/l IAA after four weeks of culture. Regenerated shoots were separated and ischolar_mained on half strength MS medium supplemented with 0.5 mg/l of IBA alone for three weeks. Simultaneous regeneration of shoots and ischolar_mains and in vitro flowering were achieved from the nodal explants on MS medium supplemented with 0.5 mg/l KN and 2.0 mg/l IAA. Well-developed complete plantlets were transferred on to specially made plastic cup containing soil rite. Acclimatized plantlets were successfully grown in garden soil.Keywords
Scoparia dulcis, Nodal Explants, Micropropagation, Plant Tissue CultureReferences
- Ahmed M, Shikha HA, Sadhu SK, Rahman MT and Datta BK (2001) Analgesic, diuretic, and antiinflammatory principle from Scoparia dulcis. Pharmazie. 56, 657-660.
- Das S, Jha TB and Jha S (1996) In vitro propagation of cashew nut. Plant Cell Reports, 15, 615-619.
- Escandon AS, Miyajima I, Alderete M, Hagiwara JC, Facciuto G, Mata D and Soto SM (2005) Wild ornamental germplasm exploration and domestication based on biotechnological approaches. In vitro colchicine treatment to obtain a new cultivar of Scoparia montevidiensis. eJ. Biotechnol. 8 (2), 204-211.
- Hayashi K, Niwayama S, Hayashi T, Nago R, Ochiai H and Morita N (1988) In vitro and in vivo antiviral activity of scopadulcic acid B from Scoparia dulcis, Scrophulariaceae, against herpes simplex virus type 1. Antiviral Res. 9, 345-354.
- Latha M, Pari L, Sitasawad S and Bhonde R (2004) Insulin-secretagogue activity and cytoprotective role of the traditional antidiabetic plant Scoparia dulcis (Sweet Broomweed). Life Science. 75, 2003-2014.
- Li Y, Chen X, Satake M, Oshima Y and Ohizumi Y (2004) Acetylated flavonoid glycosides potentiating NGF action from Scoparia dulcis. J. Nat. Prod. 67, 725-727.
- Mukherjee A, Unnikrishnan M and Nair NG (1991) Growth and morphogenesis of immature embryos of Sweet Potato (Ipomea batata L.) In vitro Plant Cell Tissue and Organ Cult. 26, 97-99.
- Murashige T and Skoog F (1962) A revised medium for rapid growth and bioassays with tobacco tissue culture. Physiologia Plantarum. 15, 473-497.
- Nishino H, Hayashi T, Arisawa M, Satomi Y and Iwashima A (2003) Antitumor-promoting activity of scopadulcic acid B, isolated from the medicinal plant Scoparia dulcis L. Oncology. 50,100-103.
- Pari L, Latha M and Rao CA (2004) Effect of Scoparia dulcis extract on insulin receptors in streptozotocin induced diabetic rats: studies on insulin binding to erythrocytes. J. Basic Clin. Physiol. Pharmacol. 15, 223-240.
- Ratnasooriya WD, Jayakody JR, Premakumara GA and Ediriweera ER (2005) Antioxidant activity of water extract of Scoparia dulcis. Fitoterapia. 76, 220-222.
- Riel MA, Kyle DE and Milhous WK (2002) Efficacy of scopadulcic acid A against Plasmodium falciparum in vitro. J. Nat. Prod. 65, 614-615.
- Thakur R, Rao P and Bapat V (1998) In vitro plant regeneration in Melia azedarach L. Plant Cell Reports. 18, 127-131.
- Experimental Investigations on CI Engine in HCCI and Conventional Diesel Mode
Abstract Views :436 |
PDF Views:112
Authors
K. Appa Rao
1,
K. Rajagopal
2
Affiliations
1 Dept. of Mechanical Engg., Lakireddy Bali Reddy College of Engg., Mylavaram, Krishna Dt., AP-521230, IN
2 Dept. of Mechanical Engg., JNTU College of Engg., Hyderabad, AP-500085, IN
1 Dept. of Mechanical Engg., Lakireddy Bali Reddy College of Engg., Mylavaram, Krishna Dt., AP-521230, IN
2 Dept. of Mechanical Engg., JNTU College of Engg., Hyderabad, AP-500085, IN
Source
Indian Journal of Science and Technology, Vol 3, No 12 (2010), Pagination: 1180-1183Abstract
An experimental investigation was carried out in diesel engine operated in both homogeneous charge compression ignition (HCCI) and conventional modes. The engine used in this investigation is single cylinder, 4 stroke, water cooled, constant speed, variable compression ratio diesel engine with a displacement of 553 cc. In conventional diesel mode, the fuel was injected 270 bTDC with a nozzle included angle 1400 and the compression ratio 16.5. In HCCI mode, the fuel was injected 800 bTDC during compression stroke by using modified camshaft, with a nozzle 600 included angle. In HCCI mode, to control the phasing and rate of combustion, the effective compression ratio was reduced to 14.5. From the experimental results it is inferred that, HCCI mode of operation results in reduced smoke and NOx emissions significantly with a little increase of HC and CO emissions.Keywords
Engine, HCCI, Injection Timing, Injection Pressure, EmissionsReferences
- Arjan H, Jonas G and Ingemar D (2005) Operation of a DI diesel engine with variable effective compression ratio in HCCI and conventional diesel mode. SAE. 2005-01-0177, 405-418.
- Duret P, Gatellier B, Luis M, Marjorie M and Peter Z (2004) Progress in diesel HCCI combustion within the European space light project.SAE. 2004-01-1904, 987-999.
- Hardy WL and Reitz RD (2006) An experimental investigation of partially premixed combustion strategies using multiple injections in a heavy duty diesel engine. SAE. 2006-01-0917, 514- 531.
- Hasegawa R and Hiromichi Y (2003) HCCI combustion in DI diesel engine. SAE. 2003-01- 0745,1070-1076.
- Kim DS and Lee CS (2005) Improved emission characteristics of HCCI engine by various premixed fuels and cooled EGR. Elsevier Fuel. 85,695-704.
- Kong SC, Marriott CD and Reitz RD (2001) Modeling and experiments of HCCI engine combustion using detailed chemical kinetics with multidimensional CFD. SAE. 2001-01-1026,1007-1044.
- Magnus S and John E (2004) An investigation of the relationship between measured intake temperature and combustion phasing for premixed and DI HCCI engines. SAE. 2004-01-1900, 1271-1286.
- Nakagome K, Naoki S and Keiichi N (1997) Combustion and emission characteristics of premixed lean diesel combustion engine. SAE. 970898, 1528- 1536.
- Ralf B, Maximilian B, Andre B, Ansgar S and Jorn K (2004) Adaption of injection system parameters to homogeneous diesel combustion. SAE. 2004-01- 0936, 551-562.
- Risberg P, Kalghatgi and Erik A H (2005) Auto-ignition quality of diesel like fuels in HCCI engines.SAE. 2005- 01-2127, 883-893.
- Rudolf HS and Charles ER (1999) Homogeneous charge compression ignition (HCCI): Benefits, compromises and future engine applications. SAE. 1999-01-3682, 2138-2145.
- Thring RH (1989) Homogeneous charge compression ignition (HCCI) engines. SAE. Paper no. 892068.
- Timoty JJ, Stanislav VB and Dennis N (2005) Lean and rich premixed compression ignition combustion in a light duty diesel engine. SAE. 2005-01-0166, 382- 391.
- Yoshinori I, Kenji K, Takeshi S and Yoshinaka T (1999) Trial of new concept diesel combustion system– premixed compression ignited combustion. SAE. 1999-01-0185, 142-151.
- Isolation and Characterization of Disease Resistant Cell Lines of Cleome viscosa Using Fungal Elicitor
Abstract Views :184 |
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Authors
Affiliations
1 Department of Biotechnology, School of Life Sciences, VELS University, Pallavaram, Chennai -600117, IN
2 Department of Biotechnology, School of Life Sciences, VELS University, Velan Nagar, Pallavaram, Chennai- 600 0117, Tamil Nadu, IN
1 Department of Biotechnology, School of Life Sciences, VELS University, Pallavaram, Chennai -600117, IN
2 Department of Biotechnology, School of Life Sciences, VELS University, Velan Nagar, Pallavaram, Chennai- 600 0117, Tamil Nadu, IN
Source
Research Journal of Science and Technology, Vol 2, No 4 (2010), Pagination: 75-77Abstract
Two independent experiments were performed to isolate diseases cell lines of Cleome viscosa from leaf segments. In the first experiment, callus induction was obtained on Murashige and Skoog medium with different concentrations of Thidiazuron (TDZ). Best dedifferentiation rates of 2.08 g fresh weight occurred in the presence of 2.0 mg/l. In the second experiment, Aspergillus nigar and Aspergillus flavus were prominently isolated from garden soil and infected leaves respectively. Biochemical studies of anthocyanin accumulation at the different elicitor treated callus tissue revealed isolation and characterization of diseases resistant cell lines. Among different concentration, 0.5 gm/l mycelia of both fungal strains elucitate the maximam accumulation of anthocyanin. The best accumulation of anthocyanin was achieved with elicitors of A. flavus. Hence, pathogenic fungi are more effective for elicitation and to develop diseases resistant traits.Keywords
Callus, Cleome viscosa, Anthocyanin, Aspergillus, Medicinal Plant.- Analysis of Heavy Metals Accumulation in Mangroves and Associated mangroves Species of Ennore Mangrove Ecosystem, East Coast India
Abstract Views :144 |
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Authors
Affiliations
1 Department of Biotechnology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies, Vels University, Chennai - 600117, Tamil Nadu, IN
2 Department of Advanced Zoology and Biotechnology, Dr. Ambedkar Government Arts College, Viyasarpadi, Chennai - 600039, Tamil Nadu, IN
1 Department of Biotechnology, School of Life Sciences, Vels Institute of Science, Technology and Advanced Studies, Vels University, Chennai - 600117, Tamil Nadu, IN
2 Department of Advanced Zoology and Biotechnology, Dr. Ambedkar Government Arts College, Viyasarpadi, Chennai - 600039, Tamil Nadu, IN
Source
Indian Journal of Science and Technology, Vol 9, No 46 (2016), Pagination:Abstract
Background/Objectives: This study is to collect the samples of true mangrove plant, associated mangrove plants, water and sediments from Ennore Mangrove Ecosystem and the samples are analyzed for heavy metals accumulation. Methods/ Statistical Analysis: The water, sediment and plant materials were collected at 6 locations. After the collection, the plant materials were washed with distilled water and they were dried and acid digested. Further the samples were subjected to analysis of heavy metals by flame atomic absorption spectrophotometer. Triplicate samples were analyzed and their results were expressed in ppm. The statistical analysis ANOVA (Analysis of Variance) and DMRT (Duncan Multiple Range Test) were used. Findings: The maximum concentrations of metals were accumulated (lead-20.93±0.26 ppm/l in water and 48.5±1.44 ppm/g in sediments) in station 4, 5 and minimum concentration (zinc -2.95±0.25 ppm/l in water and 4.36±0.10 ppm/g in sediment) was observed in station 5. In overall average accumulation of heavy metals like Pb (6.09±4.59 ppm/g) > Zn (4.35±3.22 ppm/g) > Cd (3.78±2.80 ppm/g) > Hg (2.84 ± 2.70 ppm/g) > Cr (2.76±2.90 ppm/g) > Cu (0.58 ±0.42 ppm/g) found in the Avicennia marina followed by Pb (4.19±3.13 ppm/g) > Zn (4.12±3.32 ppm/g) > Cd (3.78±2.79 ppm/g) Cr (2.47±1.91 ppm/g) Hg (1.89±1.61ppm/g) > Cu (1.27±1.20 ppm/g) in the Suaeda nudiflora and Pb (4.39±3.23 ppm/g) > Zn (3.77±2.99 ppm/g) > Cd (2.39±1.86 ppm/g) > Cr (1.75±1.34 ppm/g) Hg (0.76±0.74 ppm/g) > Cu (0.50±0.40 ppm/g) in the Sesuvium portulacastrum. The metal concentration of the water and sediments were significantly (p<0.05) varied and in plants, lead (Pb) were significantly varied (p<0.05) between selected plants parts then the other metals like Hg, Cr, Cd, Cu and Zn were not significant. Application/Improvements: Heavy metals contamination was observed in all samples. The mangroves accumulated more concentration than associated mangroves, therefore the Avicennia marina is suitable candidate for bioaccumulator and recommended for phytoremediation.Keywords
Accumulation, Ecosystem, Ennore, Heavy Metals, Mangroves, Phytoremediation.- Medicinal Plants for Inflammatory Arthritis
Abstract Views :169 |
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Authors
Affiliations
1 PSG College of Pharmacy, Coimbatore, Tamil Nadu, IN
2 Vignan Institute of Pharmaceutical Sciences, Hyderabad, AP, IN
3 Zydus Cadila Healthcare Ltd., Ahmadabad, Gujarat, IN
1 PSG College of Pharmacy, Coimbatore, Tamil Nadu, IN
2 Vignan Institute of Pharmaceutical Sciences, Hyderabad, AP, IN
3 Zydus Cadila Healthcare Ltd., Ahmadabad, Gujarat, IN
Source
Research Journal of Pharmacognosy and Phytochemistry, Vol 6, No 2 (2014), Pagination: 51-65Abstract
Rheumatoid arthritis (RA) is a debilitating disease and its features are progressive destruction of bones and cartilage. Allopathic medicine comprising anti-inflammatory and immunomodulatory drugs have the limitations of emergence of non-responders and several adverse effects. Herbal drugs due to their safety, economy and easy availability could be better alternates in this scenario. Considerable work had been done on antiarthritic plants and some of them are available commercially, based on the traditional uses and scientific reports. The primary objective of this review is to give a brief description of antiarthritic herbs that have the history of human use and their antiarthritic activity. Antiarthritic activity has been evaluated in animal models, cell-lines studies and clinical trials. In this review 72 medicinal plants having antiarthritic property has been analyzed.Keywords
Rheumatoid, Arthritis, Antiinflammatory.- Screening and Evaluation of Invasive Weeds against Pseudomonas aeruginosa (Mtcc 3541) for Quorum Sensing Interference and its Free Radical Scavenging
Abstract Views :139 |
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Authors
Affiliations
1 Department of Biotechnology, Vels University, Chennai, IN
2 Department of Biotechnology, Ayya Nadar Janaki Ammal College, Madurai, IN
3 Department of Molecular Biology, Madurai Kamaraj University, Madurai, IN
1 Department of Biotechnology, Vels University, Chennai, IN
2 Department of Biotechnology, Ayya Nadar Janaki Ammal College, Madurai, IN
3 Department of Molecular Biology, Madurai Kamaraj University, Madurai, IN
Source
Research Journal of Pharmacy and Technology, Vol 10, No 2 (2017), Pagination: 525-528Abstract
Four invasive plants from the family of Amaranthaceae were challenged against Pseudomonas aeruginosa (MTCC 3541) for quorum sensing interference. Gomphrena serrata (seed), Digera muricata (flower) and Alternanthera paronychioides (leaf) showed elevated anti swarming activity 61.14%, 73.60% and 68.99% respectively when compared with control. All the concentrations of plant extracts used do not inhibit the growth but the quorum sensing. Significant scavenging activity of free radicals was observed with seed and flower extracts is above 97% of Alternanthera paronychioides and Digeria muricata flower showed 97% of scavenging free radicals. Biofilm (70.92%), pyocyanin (79.08%) and Las A (76.26%) production was inhibited to the significant level by Alternanthera paronychioides leaf, flower and leaf respectively. From the results analysed it is the property of plant compound to interfere quorum sensing but not the single part of the plant contribute all the phenomenon of quorum sensing inhibition but the whole plant may do the activity on further research.Keywords
Quorum Sensing, Free Radical Scavenging, Invasive Weeds.- Viscometric, Volumetric and Acoustical Studies of N, N-Dimethylimidodicarbonirnidic Diamide Hydrochloride in Both Aqueous and Non-Aqueous Media at 303.15K
Abstract Views :168 |
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Authors
Affiliations
1 Department of Physics, Govt. Engg. College, Thirunelveli-627007, Tamil Nadu, IN
2 Department of Physics, P.S.R. Engg. College, Sivakasi, IN
1 Department of Physics, Govt. Engg. College, Thirunelveli-627007, Tamil Nadu, IN
2 Department of Physics, P.S.R. Engg. College, Sivakasi, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 28, No 2-4 (2006), Pagination: 81-86Abstract
N, N-Dimethylimidodicarbonimidic Diamide Hydrochloride (Metformin hydrochloride) has been widely used for management of non-insulin dependent diabetes mellitus. In this paper we present the result of ultra sonic velocity, density, viscosity of aqueous metformin hydrochloride solution and methanol-metformin hydrochloride solution for different concentration at T=303.15K. The variations in ultrasonic velocity and internal pressure play a significant role in understanding the solute-solvent, intra and inter molecular interactions. Further the acoustical relaxation time, acoustical impedance, internal pressure, free volume, enthalpy, inter molecular free length, Rao's constant, Wada's constant are computed. Hydrogen bonding and molecular interaction in the solutions are analyzed on the basis of viscometric, volumetric and acoustical data.- Viscometric, Volumetric and Acoustical Studies of Sodium Carbonate in L-Histidine Water Solution
Abstract Views :158 |
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Authors
Affiliations
1 Department of Physics, Government College of Engg., Tirunelveli-627007, Tamilnadu, IN
2 Department of Physics, St. Xavier's Catholic College of Engg., Chunkankadai-629807, Tamilnadu, IN
1 Department of Physics, Government College of Engg., Tirunelveli-627007, Tamilnadu, IN
2 Department of Physics, St. Xavier's Catholic College of Engg., Chunkankadai-629807, Tamilnadu, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 28, No 2-4 (2006), Pagination: 87-92Abstract
Viscosity, density and ultrasonic data for sodium carbonate in L-Histidine water mixtures at different concentrations have been reported at 303.15K. The viscosity data have been analysed using the Jones-Dole equation. Apparent molar volumes, apparent molar compressibilities, limiting partial molar volumes, limiting partial molar compressibilities, transfer volumes have been calculated. All these parameters have been used to interpret the structure making or breaking capacities of sodium carbonates in L-Histidine water solutions.- Study of Molecular Interactions in Aprotic-Aprotic Binary Mixtures Through Ultrasonic Measurements
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Authors
S. Prabakar
1,
K. Rajagopal
2
Affiliations
1 Department of Physics, IRT Polytechnic College, Tirunelveli-627007, IN
2 Department of Physics, Govt. College of Engineering, Tirunelveli-627007, Tamil Nadu, IN
1 Department of Physics, IRT Polytechnic College, Tirunelveli-627007, IN
2 Department of Physics, Govt. College of Engineering, Tirunelveli-627007, Tamil Nadu, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 27, No 2-3 (2005), Pagination: 41-48Abstract
Ultrasonic velocity and density for binary liquid mixtures of acetone+acetophenone, ethyl methyl ketone+acetophenone and acetone + ethyl methyl ketone have been measured at 308 K over the entire molar concentration range. From these measured parameters, adiabatic compressibility (KS), inter molecular free length (Lf) acoustic impedance (Z), relative association (RA) and excess adiabatic compressibility (KSE) along with excess intermodular free length (LEf) have been calculated. The thermodynamic parameters and their excess values are used to account for the molecular interactions taking place between the components of the mixtures. Further the experimental ultrasonic sound velocities of all these binary systems are compared with those evaluated theoretically from empirical, semi empirical and statistical models. The validity of these models is also checked and a comparative study of the various theories is made for these systems.- Ultrasonic Studies on Molecular Interactions in Binary Mixtures of Acetonitrile with Carbonyl Molecules
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Authors
Affiliations
1 Department of Physics, Manonmaniam Sundaranar University, Tirunelveli, IN
2 Department of Physics, Rose Mary College for Women, Tirunelveli, IN
3 Department of Physics, Govt. College of Engg., Tirunelveli-627007, Tamil Nadu, IN
1 Department of Physics, Manonmaniam Sundaranar University, Tirunelveli, IN
2 Department of Physics, Rose Mary College for Women, Tirunelveli, IN
3 Department of Physics, Govt. College of Engg., Tirunelveli-627007, Tamil Nadu, IN
Source
Journal of Pure and Applied Ultrasonics, Vol 27, No 2-3 (2005), Pagination: 49-54Abstract
Densities and ultrasonic velocities have been measured at 299K for the binary mixtures of acetonitrile (ACN) with acetone/ethyl methyl ketone/Methyl isobutyl ketone and acetophenone over entire composition range. From these, isentropic compressibility (KS), intermolecular free length (Lf) and their deviations namely excess isentropic compressibility (LSE) and excess inter molecular freelength (LEF) have been calculated and interpreted in terms of inter molecular interactions. Further theoretical values of ultrasonic velocity in the four binary liquid mixtures are calculated using two different theoretical models. The relative merits of these theories and relations have been discussed.- Analysis on Emerging Trends and Challenges in Smart Grid Automation Technology from Generation to Distribution
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Authors
Affiliations
1 Department of Electrical Engineering, IIT Madras, Chennai- 600036, T.N., IN
2 GE HTC, Cyber Pearl, Hitech City, Madhapur, Hyderabad - 500081. A.P., IN
1 Department of Electrical Engineering, IIT Madras, Chennai- 600036, T.N., IN
2 GE HTC, Cyber Pearl, Hitech City, Madhapur, Hyderabad - 500081. A.P., IN