Results 31 to 40 of about 68,403 (337)

On the Origin of the Early Solar System Radioactivities. Problems with the AGB and Massive Star Scenarios [PDF]

, 2018
Recent improvements in stellar models for intermediate-mass and massive stars are recalled, together with their expectations for the synthesis of radioactive nuclei of lifetime $\tau \lesssim 25$ Myr, in order to re-examine the origins of now extinct ...
Busso, M., Chieffi, A., Cristallo, S., Hoppe, P., Kratz, K. -L., Limongi, M., Palmerini, S., Piersanti, L., Trippella, O., Vescovi, D.   +9 more
core   +2 more sources

Incorporation of Labeled Methionine as a Tissue Tracer in Broiler Chickens

Brazilian Journal of Poultry Science
The objective of this study was to evaluate the process of L-methionine incorporation in the blood plasma, liver, breast muscle, and abdominal fat of 35- to 59-d-old broiler chickens using the carbon stable isotope (12C and 13C) technique for the ...
AC Stradiotti, JA Bendassolli, C Ducatti, JR Sartori, VC Pelícia, PC Araujo, MK Maruno, AC Pezzato   +7 more
doaj   +1 more source

Dietary glutamine, glutamic acid and nucleotide supplementation accelerate carbon turnover (δ13C) on stomach of weaned piglets

Animal Nutrition, 2017
The use of stable isotope analysis as a tool for characterization of carbon turnover (δ13C) in piglet's tissues by tracing its feeding system has drawn attention.
Amanda D. Assoni, Alessandro B. Amorim, Mayra A.D. Saleh, Marcos L.P. Tse, Dirlei A. Berto   +4 more
doaj   +1 more source

Hydrological controls on nutrient exportation from old-growth evergreen rainforests and Eucalyptus nitens plantation in headwater catchments at Southern Chile [PDF]

, 2015
Soil cover disturbances have a direct effect on biogeochemistry, potentially enhancing nutrient loss, land degradation and associated changes in ecosystem services and livelihood support.
Boeckx, Pascal, Hervé Fernández, Pedro Alejandro, Huygens, Dries, Oyarzun, Carlos E, Verhoest, Niko   +4 more
core   +1 more source

Cinética de fósforo com modelos matemáticos em ovinos adultos Phosphorus kinetics using mathematical models for adult sheep

Pesquisa Agropecuária Brasileira, 2007
O objetivo deste trabalho foi avaliar, por meio de modelos matemáticos, o metabolismo de fósforo (P) em ovinos adultos suplementados com teores crescentes de farinha de ossos calcinados com 0, 1, 2 e 3 g de P por animal por dia.
Helder Louvandini, Dorinha Miriam Silber Schmidt Vitti   +1 more
doaj   +1 more source

Timing carbon turnover (δ13C) in weaned piglet’s brain by IRMS

Anais da Academia Brasileira de Ciências, 2018
Isotope-ratio mass spectrometry (IRMS) is a potential tool that provides time-integrated estimate of assimilated and not just ingested nutrients. This feature turned possible its application to evaluate the effects of dietary nucleotides and glutamate on
MAYRA A.D. SALEH, LUAN S. DOS SANTOS, DIRLEI A. BERTO, ALESSANDRO B. AMORIM, VLADIMIR E. COSTA, CARLOS DUCATTI   +5 more
doaj   +1 more source

Aproveitamento de nitrogênio pelo milho, em razão da adubação verde, nitrogenada e fosfatada Nitrogen utilization by corn as affected by green manures and nitrogen and phosphorus fertilizers

Pesquisa Agropecuária Brasileira, 2009
O objetivo deste trabalho foi avaliar o aproveitamento, pelo milho (Zea mays L.), do nitrogênio (N) proveniente da ureia, de restos culturais da crotalária (Crotalaria juncea) e do milheto (Pennisetum glaucum), e do solo, em função da adubação ...
Edson Cabral da Silva, Takashi Muraoka, Felipe Carlos Alvarez Villanueva, Freddy Sinencio Contreras Espinal   +3 more
doaj   +1 more source

The need for speed – Burnup determination of spent nuclear fuel

Talanta Open, 2022
Here we present the application of a novel analytical approach for high-speed evaluation of burn-up in spent nuclear fuel. This automated online separation–direct analysis method, which simultaneously measures the isotopic compositions and concentrations
Benjamin D. Roach, Kayron T. Rogers, N. Alex Zirakparvar, Jeffrey S. Delashmitt, Shalina C. Metzger, Benjamin T. Manard, Tamara J. Keever, Joseph M. Giaquinto, Cole Hexel   +8 more
doaj   +1 more source

A Molecular Line Survey of the Highly Evolved Carbon Star CIT 6 [PDF]

, 2008
We present a spectral line survey of the C-rich envelope CIT 6 in the 2mm and 1.3mm bands carried out with the Arizona Radio Observatory (ARO) 12m telescope and the Heinrich Hertz Submillimeter Telescope (SMT). The observations cover the frequency ranges
Agúndez, Alksnis, Bachiller, Balser, Bieging, Boothroyd, Bujarrabal, Busso, Cernicharo, Charbonnel, Charbonnel, Dinh-V-Trung, , Frost, Groenewegen, He, Henkel, Herpin, Kahane, Keene, Lindqvist, Lodders, Lucas, Monnier, Nejad, Nummelin, Olofsson, Pardo, Sackmann, Schmidt, Schöier, Sopka, Sun Kwok, Willacy, Yong Zhang   +33 more
core   +2 more sources

Tonic signaling of the B‐cell antigen‐specific receptor is a common functional hallmark in chronic lymphocytic leukemia cell phosphoproteomes at early disease stages

Molecular Oncology, EarlyView.
B‐cell chronic lymphocytic leukemia (B‐CLL) and monoclonal B‐cell lymphocytosis (MBL) show altered proteomes and phosphoproteomes, analyzed using mass spectrometry, protein microarrays, and western blotting. Identifying 2970 proteins and 316 phosphoproteins, including 55 novel phosphopeptides, we reveal BCR and NF‐kβ/STAT3 signaling in disease ...
Paula Díez, Pablo Juanes‐Velasco, Marina L. García‐Vaquero, Conrad Droste, Alicia Landeira‐Viñuela, Miguel Alcoceba, Helena Fidalgo‐Gómez, Sara Misiego‐Herrero, Almudena Navarro‐Bailón, Mónica Baile, José M. Bastida, Jose Manuel Sanchez‐Santos, Rafael Góngora, Julia Almeida, Marcos Gonzalez‐Diaz, Alberto Orfao, Javier De Las Rivas, Manuel Fuentes   +17 more
wiley   +1 more source