Results 111 to 120 of about 71,609 (291)

Determination Uranium and its Isotopes in Biological Samples of Smokers

مجلة بغداد للعلوم
This study was conducted in the Najaf Governorate- Iraq, to analyze biological samples from smokers and non-smokers. The samples, including blood serum, urine, hair, and nails, were used as biomarkers to determine uranium concentrations (UC) and ...
Abdulhussein A. Alkufi, Mohanad H. Oleiwi, Ali Abid Abojassim, Noor Ulhuda G. Mohammed, Ali Saeed Jassim , Michele Guida   +5 more
doaj   +1 more source

CR ISOTOPES AS A VALUABLE TRACER OF CR(VI) REDUCTION IN POLLUTED (GROUND)WATERS

Proceedings of the 44th International Academic Conference, Vienna, 2018
Chromium stable isotopes are of interest in many geochemical studies as a tool to identify Cr(VI) reduction in groundwater aquifers. At four industrial sites in the Czech Republic, we evaluated the extent of spontaneous removal of toxic Cr(VI) contaminated by Cr-plating baths.
openaire   +2 more sources

Mikrometeorite und ihr Ursprung im Sonnensystem: Außerirdischer Staub zum Anfassen

Physik in unserer Zeit, EarlyView.
Mit einer Größe, die der Dicke eines Haares entspricht, sind Mikrometeorite kaum sichtbar für das bloße Auge. Dennoch werden sie seit etwa 150 Jahren gesammelt, und seit wenigen Jahren sogar auf unseren Hausdächern. Als Kostproben von Asteroiden oder Kometen stellen sie wertvolle Boten unseres Sonnensystems dar.
Jenny Feige
wiley   +1 more source

Cr Speciation & Isotope Composition in Seawater [PDF]

Goldschmidt Abstracts, 2020
Davidson Ashley, Francois Roger, Sean A Crowe   +2 more
openaire   +1 more source

EPR of photochromic Mo3+ in SrTiO3 [PDF]

, 2010
In single crystals of SrTiO_3, a paramagnetic center, characterized by S = 3/2 and hyperfine interaction with an I = 5/2 nuclear spin has been observed in the temperature range 4.2K-77K by means of EPR. The impurity center is attributed to Mo3+.
Kool, Th. W.
core   +2 more sources

University teaching of mass spectrometry as a key practical technique within the context of a fully integrated, spiral curriculum

Rapid Communications in Mass Spectrometry, EarlyView.
Rationale Mass spectrometry (MS) is introduced to high school students in the UK in many pre‐university course syllabi. As such, we have identified the use of MS as a key technique that should be taught practically to undergraduates from the outset of their studies.
Andrew F. Worrall, Craig D. Campbell, Megan O. Midson, Malcolm I. Stewart   +3 more
wiley   +1 more source

Benthic Macroinvertebrate Recovery After Wastewater Treatment Plant Upgrades: Implications for Biomonitoring

River Research and Applications, EarlyView.
ABSTRACT During the past decade, major upgrades have been made to the Kitchener and Waterloo wastewater treatment plants (WWTPs) in the Grand River watershed in Ontario, Canada. As part of efforts to evaluate the effectiveness of these investments (>$450 M CDN), a benthic macroinvertebrate (BMI) monitoring program was initiated by sampling upstream and
Sean McLay, Mark R. Servos, Leslie M. Bragg, Dominika Celmer‐Repin, Hadi A. Dhiyebi, Azar Fattahi, Keegan A. Hicks, Edward M. Krynak, Mitchell Kay, Adam G. Yates   +9 more
wiley   +1 more source

Portable X‐Ray Fluorescence in the Assessment of Zinc Along Grizzly Bear Hair

X-Ray Spectrometry, EarlyView.
ABSTRACT As a biomarker of past uptake of zinc, hair presents an interesting option since its growth can provide a stored record over time. This study investigates the distribution of zinc in hairs gathered from a series of grizzly bears (Ursus arctos horribilis).
David E. B. Fleming, Ethan D. W. Briand, Jennie R. Christensen   +2 more
wiley   +1 more source

A Low‐Power Radioisotope XRF Spectrometer for Detection of Light Elements on Planetary Missions

X-Ray Spectrometry, EarlyView.
ABSTRACT Current X‐ray spectrometers for in situ geochemical analysis on planetary missions typically rely either on X‐ray tubes, which demand electrical power and add mass and thermal complexity, or on alpha particle X‐ray spectrometers (APXS) that use rare 244Cm$$ {}^{244}\mathrm{Cm} $$ sources, and come with severe concerns on radiation safety and ...
Leandro Silveri, Artem Knyazev, Hashem Alaidaros, Maryam Manzoor Amanullah, Zach Ioannou, Tengiz Ibrayev, Danish Khan, Sara Leardini, Laura Manenti, Simi Maria Emilia Mangani, Safa Naseem, Sandhya Sharma, Sara Trevisan, Alia Zino, Francesco Arneodo   +14 more
wiley   +1 more source

Quality from Kent: Preliminary results from the analysis of fifth‐ to seventh‐century silver alloys

Archaeometry, EarlyView.
Abstract This paper explores early results from the chemical and lead isotope analysis of 30 silver‐alloy objects from southeast England dating between the fifth and seventh centuries CE, presenting limited aspects of the three main analyses that were conducted. First, a comparison of the results gained from surface x‐ray fluorescence (pXRF) values and
Toby F. Martin, Matthew J. Ponting
wiley   +1 more source