Results 31 to 40 of about 2,001 (220)

Deciphering the preservation of fossil insects: a case study from the Crato Member, Early Cretaceous of Brazil [PDF]

open access: yesPeerJ, 2016
Exceptionally well-preserved three-dimensional insects with fine details and even labile tissues are ubiquitous in the Crato Member Konservat Lagerstätte (northeastern Brazil). Here we investigate the preservational pathways which yielded such specimens.
Gabriel Ladeira Osés   +11 more
doaj   +2 more sources

Chemical Properties of Indoor Individual Particles Collected at the Daily Behavior Spaces of a Factory Worker

open access: yesAsian Journal of Atmospheric Environment, 2017
The main purpose of the study was to clarify the properties of individual particles collected at each behavior space of a factory worker. The samplings of size-segregated (PM2.1-1.1 and PM4.7-3.3) indoor particles were conducted at three different ...
Chang-Jin Ma   +2 more
doaj   +1 more source

Nickel biopathways in tropical nickel hyperaccumulating trees from Sabah (Malaysia) [PDF]

open access: yes, 2017
The extraordinary level of accumulation of nickel (Ni) in hyperaccumulator plants is a consequence of specific metal sequestering and transport mechanisms, and knowledge of these processes is critical for advancing an understanding of transition element ...
Barnabas, A.   +6 more
core   +3 more sources

Localization of Aluminum in Epidermal Cells of Mature Tea Leaves

open access: yesQuantum Beam Science, 2019
We have determined the distribution of aluminum in the epidermal cells of mature tea leaves using micro-beam particle-induced X-ray emission. The observed pattern of aluminum distribution in the epidermal cells suggests that aluminum exists in cell walls.
Yoichi Haruyama   +4 more
doaj   +1 more source

Laser-based techniques for the non-invasive characterisation of grisaille paints on stained-glass windows

open access: yesHeritage Science, 2023
Grisaille was the first paint applied on stained-glass panels, used in Europe since the twelfth century. Historical written sources described the use of iron and copper together with a high lead-silica base glass in the grisailles production.
Carla Machado   +8 more
doaj   +1 more source

Informative potential of multiscale observations in archaeological biominerals down to the nanoscale [PDF]

open access: yes, 2016
International audienceHumans have intentionally used biological materials such as bone, ivory and shells since prehistoric times due to their particular physical and chemical properties.
Gourrier, Aurélien, Reiche, Ina
core   +4 more sources

The Use of Nuclear Scanning Microprobe to Study Radiation-Induced Migration of Impurities at the Grain Boundaries in Construction Materials [PDF]

open access: yesЖурнал нано- та електронної фізики, 2016
The application of scanning nuclear microprobe for study a radiation-induced migration of impurities at the grain boundaries in structural materials was considered.
A.V. Romanenko, A.G. Ponomarev
doaj  

Application of laser produced ion beams to nuclear analysis of materials

open access: yesEPJ Web of Conferences, 2013
The ion beam driven nuclear analysis has been developed for many years by using various electrostatic accelerators. A proton micro-beam with the beam diameter of ∼1.5 μm at Takasaki Ion Acceleration for Advanced Radiation Application (TIARA), JAEA was ...
Mima Kunioki   +11 more
doaj   +1 more source

Fate of nickel and calcium in seedlings of the hyperaccumulator Berkheya coddii during germination

open access: yesBiologia Plantarum, 2015
Little is known about Ni storage in seeds of hyperaccumulating plants and its possible role in the first stages of plant development. The aim of this study was to determine Ni distribution in seeds and seedlings during germination and to test its role ...
S. Groeber   +5 more
doaj   +1 more source

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