Results 41 to 50 of about 25,893,918 (302)

Moss Biomonitoring in the Evaluation of Air Pollution in the Tver Region, Russia

Atmosphere
In the Tver region (Russia), the moss biomonitoring technique was applied to investigate the atmospheric deposition of potentially harmful elements. Using inductively coupled plasma–optical emission spectroscopy and a direct mercury analyzer, a total of ...
Konstantin Vergel, Inga Zinicovscaia, Nikita Yushin, Omari Chaligava, Liliana Cepoi, Alexandra Kravtsova   +5 more
doaj   +1 more source

Instrumental neutron activation analysis of an enriched 28Si single-crystal

, 2014
The determination of the Avogadro constant plays a key role in the redefinition of the kilogram in terms of a fundamental constant. The present experiment makes use of a silicon single-crystal highly enriched in 28Si that must have a total impurity mass ...
MANA, GIOVANNI, Oddone M., BERGAMASCHI, LUIGI, Giordani L, D'AGOSTINO, GIANCARLO   +4 more
core   +1 more source

Molecular brakes regulating mTORC1 activation in skeletal muscle following synergist ablation [PDF]

, 2014
The goal of the current work was to profile positive (mTORC1 activation, autocrine/paracrine growth factors) and negative [AMPK, unfolded protein response (UPR)] pathways that might regulate overload-induced mTORC1 activation with the hypothesis that a ...
Hamilton, D. Lee, Gallagher, Iain J, Philp, A., Baar, Keith, Towler, Mhairi C., Bodine, S. C., Gallagher, Iain J., Philp, Andrew, Towler, M. C., Baar, K., Towler, Mhairi C, Mackenzie, M. G., Gallagher, I. J., Patton, Amy, Hamilton, David Lee, Patton, A., MacKenzie, Matthew G., Lee Hamilton, D., Bodine, Sue C, Bodine, Sue C., MacKenzie, Matthew G   +20 more
core   +1 more source

KINETIC INVESTIGATION ON PARTIALLY OXIDIZED HUADIAN OIL SHALE BY THERMOGRAVIMETRIC ANALYSIS; pp. 377–393 [PDF]

Oil Shale, 2014
The kinetic parameters of Huadian oil shale and its solid residues after preheating treatment at different temperatures were evaluated by thermo­gravimetric (TG) analysis.
FENGTIAN BAI, YOUHONG SUN, YUMIN LIU, Baochang Liu, MINGYI GUO, XIAOSHU LÜ, WEI GUO, QIANG LI, CHUANBIN HOU, QIUWEN WANG   +9 more
doaj   +1 more source

Archaeometry and Archaeology: preliminary studies of the ceramics from archaeological sites of the upper Madeira river/Rondônia - Brazil.

Brazilian Journal of Radiation Sciences, 2021
In southwest Amazonia, in the region of the Upper Madeira River, Rondônia, archaeological research has shown that communities with diverse cultures co-existed in the pre-colonial past (ca. 1,000 BP). Archaeological sites from this period located on river
Angislaine Freitas Costa, Casimiro Sepúlveda Munita, Silvana Zuse, Renato Kipnis   +3 more
doaj   +1 more source

Neutron activation analysis of the 30Si content of highly enriched 28Si: proof of concept and estimation of the achievable uncertainty

, 2014
We investigated the use of neutron activation to estimate the 30Si mole fraction of the ultra-pure silicon material highly enriched in 28Si for the measurement of the Avogadro constant.
G. Mana, MANA, GIOVANNI, Prata M, G. D’Agostino, L. Bergamaschi, PRATA, MICHELE, Oddone M, BERGAMASCHI, LUIGI, Giordani L., ODDONE, MASSIMO, GIORDANI, LAURA FRANCA, D'AGOSTINO, GIANCARLO   +11 more
core   +1 more source

Neutron activation analysis of plantinum converter and furnace mattes using a D-T sealed tube neutron generator [PDF]

, 2013
Neutron activation analysis (NAA) has been applied to furnace matte and converter matte samples with the objective of studying the natural variation in the elemental composition of the samples, with a view to characterize the samples for their source of ...
Majawa, Louis John
core   +1 more source

Iodine determination in edible algae species using epithermal neutron activation analysis methodology

Brazilian Journal of Radiation Sciences, 2021
Iodine is one of the essential trace elements of much interest in nutritional research being responsible for the production of the thyroid hormones, which has great importance for human metabolism. Edible algae species accumulate iodine from seawater and
Caroline Rodrigues Albuquerque, Vera Akiko Maihara, Paulo Sergio Cardoso Sila   +2 more
doaj   +1 more source

Minimax Analysis of Active Learning

J. Mach. Learn. Res., 2014
This work establishes distribution-free upper and lower bounds on the minimax label complexity of active learning with general hypothesis classes, under various noise models. The results reveal a number of surprising facts. In particular, under the noise model of Tsybakov (2004), the minimax label complexity of active learning with a VC class is always
Steve Hanneke, Liu Yang 0001
openaire   +4 more sources

Safety and Effectiveness of a High‐Dose, Tailored Tissue Plasminogen Activator Therapy Protocol: A Joint Pediatric Hematology and Cardiac ICU Quality Improvement Initiative Analysis

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric thromboembolism is increasingly encountered in critical care. Systemic thrombolysis with tissue plasminogen activator (tPA) facilitates vessel or valve patency, yet pediatric‐specific protocols remain undefined, and safety concerns persist. Objective To evaluate the efficacy and safety of a tailored, prolonged systemic tPA
Eran Shostak, Oded Gilad, Yael Feinstein, Sigal Nakav, Ofer Schiller, Joanne Yacobovich   +5 more
wiley   +1 more source