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Wyszukujesz frazę "Naidu, R." wg kryterium: Autor


Wyświetlanie 1-3 z 3
Tytuł:
Evaluation of metal uptake factors of native trees colonizing an abandoned copper mine e a quest for phytostabilization
Autorzy:
Nirola, R.
Megharaj, M.
Palanisami, T.
Aryal, R.
Venkateswarlu, K.
Naidu, R.
Powiązania:
https://bibliotekanauki.pl/articles/92134.pdf
Data publikacji:
2015
Wydawca:
Główny Instytut Górnictwa
Tematy:
abandoned mine site
heavy metals
bioconcentration factor
translocation factor
enrichment factor
phytostabilisation
opuszczone tereny kopalniane
metale ciężkie
współczynnik biokoncentracji
współczynnik translokacji
współczynnik wzbogacenia
fitostabilizacja
Opis:
Accumulation and enrichment of heavy metals in the above ground parts of Australian native Acacia pycnantha (Ap) and Eucalyptus camaldulensis (Ec) growing in an abandoned copper mine located in Kapunda, South Australia have been studied. Cu and other metals (Na, Al, K, Ca, Fe, Zn, Cd and Pb) in plants and corresponding soils were analysed to evaluate plant interaction with soils containing heavy metals. As per the total metal analysis of leaf and corresponding soil samples, Ap accumulated 93.6 mg kgˉ¹ of Cu in leaf while the corresponding soil concentration was 1632 mg kgˉ¹. The Ec accumulated 5341 mg kgˉ¹ of Cu in leaf while the concentration of this heavy metal in soil was 65 mg kgˉ¹ in soil. The ESEM spectral analysis also showed a high leaf concentration of Cu in Ec (7%) as against only 0.12% in Ap. The average bioconcentration factor for Cu, Zn,Cd and Pb in Ec wasmuch higher than that of Ap. Similarly, enrichment factor was more in Ec for Cu, Zn and Pb than in Ap. In contrast, translocation factor for only Zn and Cd was high in Ap. This study points out that Ec and Ap have different stabilising potential in remediating heavy metals like Cu in mined soils.
Źródło:
Journal of Sustainable Mining; 2015, 14, 3; 115-123
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental investigation to study the viscosity and dispersion of conductive and non-conductive nanopowders’ blended dielectrics
Autorzy:
Santarao, K.
Prasad, C. L. V. R. S. V.
Swami Naidu, G.
Powiązania:
https://bibliotekanauki.pl/articles/102844.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
nanofluid
viscosity
dispersion
sonication
silicon carbide nano powder
boric acid nano powder
Opis:
Nano fluids are nanotechnology-based colloidal dispersions engineered by stably suspending nanoparticles. The characteristics of nano fluids such as thermal and electrical conductivities, viscosity, specific heat, dispersion etc. were studied and analyzed by earlier researches at different particle concentrations with different nano fluids. It was established that nano fluids have a significant impact on the process due the improvised characteristics. Nano fluid viscosity and dispersion deserve the same attention as thermal conductivity in cases of nano dielectric fluids that are used in EDM as they influence the MRR. In this work, The viscosity and dispersion of the conductive and nonconductive Nano powders blended dielectrics are investigated as a function of volume fraction so as to evaluate the behavior of these nano fluids at different particle volume concentrations. Kerosene and deionized water based nano fluids blended with conductive (SiC) and non-conductive (boric acid) Nano particles are selected for the current study. It is observed that as the percentage volume fraction of nano particles (both SiC and boric acid) increased, the viscosity was found increasing when blended with DI water. But the viscosity behavior with kerosene blended with SiC and boric acid is not same. The existing experimental results about the nano fluids viscosity shows clearly that viscosity have a specific trend in variation with an increase of volume concentration. Boric acid blended with DIW and kerosene shows similar trend in dispersion. However, in case of SiC blended with DIW and kerosene showed some contradictory results giving scope for further investigation. The outcome of these experimental investigations will augment the works that are going on in studying its influence on MRR in EDM processes using nano blended dielectric medium.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 1; 154-160
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prosthetic status and prosthetic needs amongst geriatric fishermen population of Kutch coast, Gujarat, India
Autorzy:
Kumar, D.R.V.
Raju, D.S.
Naidu, L.
Deshpande, S.
Chadha, M.
Agarwal, A.
Powiązania:
https://bibliotekanauki.pl/articles/874703.pdf
Data publikacji:
2015
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
geriatrics
prosthetic status
prosthetic need
fisherman
dental hygiene
dental health
environmental factor
oral health
human population
Kutch coast
Gujarat state
India
Opis:
Background. Literature among fishermen of India is scanty. The external factors like diet, quality of dental hygiene and environmental factors have an effect on oral health. Moreover elderly age group offer very little importance towards their oral health. Objective. To assess the prosthetic status and prosthetic treatment needs among the geriatric fishermen population of Kutch coast, Gujarat, India. Material and Methods. A cross sectional descriptive study was conducted among 1200 elderly people (above 60 years) of Kutch coast, Gujarat, India. They were interviewed and examined using a proforma designed with the help of WHO Oral Health Survey 1997. Chi square test was used for comparisons. Confidence level and p-value were set at 95% and 5% respectively. Results. Out of 1200 elderly people, 836 were males and 364 were females. Considering the prosthetic status, majority (76.7%) had no prosthesis followed by full removable dentures (12.3%). An insight into the prosthetic needs showed that majority (27.3%) had a need for multiunit prosthesis. Conclusion. In this study, it was seen that overall prosthetic status was low and prosthetic need was high. Therefore new avenues have to be discovered to make the prosthetic treatment readily available to the elderly.
Źródło:
Roczniki Państwowego Zakładu Higieny; 2015, 66, 2
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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