Results 71 to 80 of about 70,014 (336)

Cinética do radiofósforo em tecidos de suínos em crescimento alimentados com dietas contendo diferentes fontes de fósforo Radiophosphorus kinetics in tissues of growing swine fed diets containing different sources of phosphorus

Revista Brasileira de Zootecnia, 2004
Foram utilizados 21 leitões machos, castrados, com peso médio de 31,94 kg, para avaliar a cinética do fósforo em tecidos de suínos. Utilizou-se o delineamento em blocos casualizados, com sete tratamentos, três repetições e um animal por unidade ...
Alexandre de Oliveira Teixeira, Darci Clementino Lopes, João Batista Lopes, Dorinha M. S. S. Vitti, José Aparecido Moreira, Vanusa Patrícia de Araújo Ferreira, Sérgio Miranda Pena, Arele Arlindo Calderano   +7 more
doaj   +1 more source

Rome’s urban history inferred from Pb-contaminated waters trapped in its ancient harbor basins [PDF]

, 2017
Heavy metals from urban runoff preserved in sedimentary deposits record long-term economic and industrial development via the expansion and contraction of a city’s infrastructure. Lead concentrations and isotopic compositions measured in the sediments of
Albarède, Francis, Arnaud-Godet, Florent, Blichert-Toft, Janne, Delile, Hugo, Goiran, Jean-Philippe, Keenan-Jones, Duncan   +5 more
core   +5 more sources

Bisphenol B Exposure Induces Miscarriage by Suppressing Migration/Invasion and Migrasome Formation

Advanced Science, EarlyView.
BPB (Bisphenol B) exposure up‐regulates ER (estrogen receptor) levels, enhances its interactions with the lnc‐HZ04 promoter region, and thus promotes ER‐mediated lnc‐HZ04 transcription. Subsequently, lnc‐HZ04 suppresses TCF4 (transcription factor 4)‐mediated PKCA (protein kinase C alpha) transcription and subsequently suppresses migration/invasion and ...
Wenxin Huang, Manli Wang, Yi Sun, Xiaoping Yue, Xun Li, Yanbing Lin, Geng Guo, Depeng Zhao, Qigang Fan, Xiaoling Ma, Zhihong Zhang, Shuaishuai Xing, Xiaoting Shen, Huidong Zhang   +13 more
wiley   +1 more source

Absorção de fósforo por híbridos de milho cultivados em solo de cerrado Phosphorus absorption by of corn hybrids grown in savana soils

Scientia Agricola, 2002
Nos últimos anos, a região do cerrado tem sido uma das principais áreas de expansão agrícola, porém seus solos apresentam grandes limitações à produção agrícola devido à sua elevada acidez e baixa fertilidade natural, principalmente quanto à ...
Cristiano Fernandes, Takashi Muraoka
doaj   +1 more source

isotope dilution

, 2014
Citation: 'isotope dilution' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.I03322 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

A forensic approach to understanding habitat use from stable isotope analysis of (avian) claw material [PDF]

, 2003
1. The potential of using stable isotope signatures of avian claws in order to infer diet and habitat use was investigated. 2. Highly significant relationships observed between stable carbon and nitrogen isotope ratios (13C, 15N) in the claws and ...
Bearhop, S, Furness, RW, Hilton, GM, Votier, SC, Waldron, S   +4 more
core   +1 more source

Perfluorooctanoic Acid Exposure Causes Macrophage Ammonia Retention and Induces Spontaneous Miscarriages

Advanced Science, EarlyView.
PFOA exposure induces pregnancy loss by promoting glutaminolysis, which further causes ammonia accumulation in macrophages. Cellular ammonia retention results in damage to mitochondria and lysosomes, which leads to cell death eventually. Impaired lysosomes also decrease the secretion of the Cathepsin B (CTSB), and attenuate macrophage infiltration and ...
Yongbo Zhao, Yijun Zhang, Hanyu Rao, Jiani Sun, Zhiyi Pan, Liping Jin, Yan Zhao   +6 more
wiley   +1 more source

Cinética do fósforo em tecidos de suínos alimentados com dietas contendo enzima fitase Phosphorus kinetics in tissue of growing pigs fed diets containing phytase enzyme

Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 2004
O experimento foi desenvolvido para avaliar a cinética do P em tecidos de suínos em crescimento, alimentados com rações contendo P orgânico e vários níveis de fitase, com o uso do 32P como indicador.
J.A. Moreira, D.M.S.S. Vitti, J.B. Lopes, M.A. Trindade Neto   +3 more
doaj   +1 more source

Ratio of natural isotopes of nitrogen. I. Primary results: soils of Dombes [Translation from: Revue d'Ecologie et de Biologie du Sol 14, 279-287, 1977] [PDF]

, 1980
Utilization of the heavy isotope of nitrogen as a tracer has found numerous applications in soil biology. It allows better definition of different stages of the nitrogen cycle, in particular the immobilization-mineralization cycle.
Chalamet, A., Domenach, A. M., Pachiaudi, C.   +2 more
core  

An accurate determination of the Avogadro constant by counting the atoms in a 28Si crystal

, 2010
The Avogadro constant links the atomic and the macroscopic properties of matter. Since the molar Planck constant is well known via the measurement of the Rydberg constant, it is also closely related to the Planck constant.
Andreas, B., Azuma, Y., Bartl, G., Becker, P., Bettin, H., Borys, M., Busch, I., Fuchs, P., Fujii, K., Fujimoto, H., Gray, M., Kessler, E., Krumrey, M., Kuetgens, U., Kuramoto, N., Mana, G., Manson, P., Massa, E., Mizushima, S., Nicolaus, A., Picard, A., Pramann, A., Rienitz, O., Schiel, D., Valkiers, S., Waseda, A.   +25 more
core   +1 more source