Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Pravin P. Parekh"'
Autor:
Greg M. Hartt, Michael E. Kitto, Pravin P. Parekh, Elizabeth A. Gillen, A. Bari, Thomas M. Semkow, Eileen M. Fielman
Publikováno v:
Health Physics. 90:31-37
Gross-beta activities have been determined weekly for 22 y from filtered atmospheric aerosols at seven sites in New York State. The activities, ranging from 0.1 to 0.9 mBq m(-3), varied seasonally and were evaluated in terms of meteorological factors
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9624eb5888a8d4bbefb33dae843381d1
https://doi.org/10.1097/01.hp.0000174813.46712.93
https://doi.org/10.1097/01.hp.0000174813.46712.93
Autor:
Abdul Malik, Ronaq R. Naqvi, Ghazanfar Hussain, Haider A. Khwaja, Sajjad Ali Shah, Khalid Mohammed Khan, Pravin P. Parekh, Adil R. Khan
Publikováno v:
Atmospheric Environment. 35:5971-5978
The present study reports findings on TSP loading in the ambient air of two major cities in Pakistan – Karachi and Islamabad. Data for TSP were collected at one site in Karachi and two in Islamabad between 10 December 1998 and 08 January 1999. This
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2e6371b0acf0930f3e64d52a4f5b4fa
https://doi.org/10.1016/s1352-2310(00)00569-0
https://doi.org/10.1016/s1352-2310(00)00569-0
Autor:
T.M. Semkow, Pravin P. Parekh
Publikováno v:
Health Physics. 81:567-574
A simultaneous detection of gross alpha and beta radioactivity was studied using gas proportional counting. This measurement is a part of a method mandated by US Environmental Protection Agency to screen for alpha and beta radioactivity in drinking w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e6744d7734437c4b21133928e2c82df
https://doi.org/10.1097/00004032-200111000-00011
https://doi.org/10.1097/00004032-200111000-00011
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 353:515-518
The Lucas scintillation cell (LC) and its modifications are among the most sensitive instruments to detect low levels of radon. In this work we describe a comprehensive investigation of the counting efficiency of the LC. A known quantity of 222 Rn wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dfdcd7bc260e5d71c3695c6519fcf0d6
https://doi.org/10.1016/0168-9002(94)91712-4
https://doi.org/10.1016/0168-9002(94)91712-4
Publikováno v:
Analytical Chemistry. 64:320-325
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5deee1435b166c7eba957ea605887063
https://doi.org/10.1021/ac00027a014
https://doi.org/10.1021/ac00027a014
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 290:437-444
A new technique has been developed to calculate coincidence-summing corrections in γ-ray spectroscopy. In this technique the general coincidence-summing equations were derived in matrix notation, which allowed extracting either the first-order corre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4bc6f8fd7518602e0f90a773bcf56d37
https://doi.org/10.1016/0168-9002(90)90561-j
https://doi.org/10.1016/0168-9002(90)90561-j
Autor:
Thomas M. Semkow, Pravin P. Parekh
Publikováno v:
Geophysical Research Letters. 17:837-840
Essential features of the grain emanation and aggregation models are presented. The presence of thin layers containing Ra is shown to enhance the Rn emanation from the grains. A multiple {alpha}-recoil mechanism is suggested to create a nonuniform Ra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80f02f3060debacc04fce500172e3a67
https://doi.org/10.1029/gl017i006p00837
https://doi.org/10.1029/gl017i006p00837
Publikováno v:
ACS Symposium Series ISBN: 9780841239821
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c82ffaae14746b8fc42c12cf722c2545
https://doi.org/10.1021/bk-2007-0945.ch011
https://doi.org/10.1021/bk-2007-0945.ch011
Autor:
Thomas M. Semkow, Ronald S. Hafner, Pravin P. Parekh, Gordon J. Wozniak, Douglas K. Haines, Liaquat Husain, Robert L. Rabun, Philip G. Williams
Publikováno v:
Radioanalytical Methods in Interdisciplinary Research ISBN: 9780841238374
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec30351f7da40e98b059451a065339d7
https://doi.org/10.1021/bk-2004-0868.ch015
https://doi.org/10.1021/bk-2004-0868.ch015
Autor:
Pravin P, Parekh, Haider A, Khwaja, Adil R, Khan, Ronaq R, Naqvi, Abdul, Malik, Khalid, Khan, Ghazanfar, Hussain
Publikováno v:
Environmental monitoring and assessment. 74(3)
Pakistan is one of the few countries in Asia that continues to use only leaded-petrol as vehicular fuel. The concentration of Pb in its petrol reported in 1991 was the highest (1.5-2.0 g Pb L(-1)) of all produced by the various Asian countries and fa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::5188ffc4ffe65f6560720768f79039bd
https://pubmed.ncbi.nlm.nih.gov/11944798
https://pubmed.ncbi.nlm.nih.gov/11944798