Results 81 to 90 of about 51,712 (271)

Mulching Increases Water Use Efficiency, Production and Profitability in Forage Cactus–Maize Intercropping Systems

Irrigation and Drainage, EarlyView.
ABSTRACT This study evaluated the growth, forage production, soil water balance, water indices, biological efficiency and competitive capacity of forage cactus and maize in monoculture and intercropping, with or without mulch. The experiment was conducted in Serra Talhada, Pernambuco, Brazil, using the cactus clone ‘Orelha de Elefante Mexicana’ (OEM ...
Kaique Renan da Silva Salvador, Mário Adriano Ávila Queiroz, Cleber Pereira Alves, José Edson Florentino de Morais, Carlos André Alves de Souza, Agda Raiany Mota dos Santos, Ênio Gomes Flôr Souza, Jose Madson da Silva, Fabiano Barbosa de Souza Prates, Randerson Cavalcante Silva, Adriano do Nascimento Simões, Hugo Rafael Bentzen Santos, Luciana Sandra Bastos de Souza, Thieres George Freire da Silva   +13 more
wiley   +1 more source

MURMANO PLÜTONUNUN YAŞI VE OFİYOLİTLE OLAN İLİŞKİSİ (DİVRİĞİ-SİVAS)

Bulletin of the Mineral Research and Exploration, 1988
Sivas ili, Divriği ilçesinin birkaç km K-KB sında yer alan, bileşimi kuvars-siyenitle diyorit arasında değişen bileşik bir karaktere sahip olan Murmano plütonu, Divriği ofiyolit karmaşığına ait serpantinitler içerisine sokulum yapar.
H.P. ZECK, Taner ÜNLÜ
doaj  

Rb-sr ages of chondrules and carbonaceous chondrites [PDF]

Rubidium-strontium and potassium-strontium isotope composition of carbonaceous chondrites and chondrules - age of carbonaceous ...
Compston, W., Murthy, V. R.
core   +1 more source

Contribution of Sm-Nd and Rb-Sr isotope systems to the petrogenetic study of the peraluminous two-mica granite pluton in Oporto town (NW Portugal) [PDF]

, 2014
O Granito do Porto corresponde a um granito hercínico, leucocrata, de duas micas, fortemente peraluminoso. No presente trabalho foram realizadas análises para os sistemas isotópicos Rb-Sr e Sm-Nd, em cinco amostras frescas do granito em estudo ...
Almeida, A., Noronha, F., Santos, J. F.
core  

Geochronology of the Whittlesey sedimentary succession, eastern England: The ‘Pompeii’ of the British late Middle Pleistocene to Holocene record

Journal of Quaternary Science, EarlyView.
Abstract The sedimentary succession at Whittlesey preserves a unique British late Middle Pleistocene to Holocene record back to a time equivalent to at least marine oxygen isotope stage 8 (ca. 250 ka). This study builds on previously published sedimentology, geochronology and palaeoecology results to establish 20 sedimentary facies associations, with ...
H. E. Langford, M. D. Bateman, R. M. Briant, D. J. Horne   +3 more
wiley   +1 more source

Study on the Factors Influencing the Separation of Sr and Nd in Sediments by Ion Exchange Resin

Yankuang ceshi, 2018
BACKGROUND In geological studies, Sr and Nd isotopes are classical isotopic dating and tracer systems. OBJECTIVES The traditional separation method usually uses the AG50W-X8 resin to elute and separate Sr and REEs in sediments, and then uses Sr-special ...
YIN Peng, HE Qian, HE Hui-jun, ZHAO Zhi-qi   +3 more
doaj   +1 more source

Ion microprobe zircon geochronology of the Uivak Gneisses: Implications for the evolution of early terrestrial crust in the North Atlantic Craton [PDF]

Ion microprobe U-Pb results for zircons from three Uivak I gneisses and one specimen of Uivak II gneiss, from the Saglek-Hebron area of Northern Labrador are reported.
Collerson, K. D.
core   +1 more source

Petrogenesis of lunar rocks: Rb-Sr constraints and lack of H2O [PDF]

Rb and Sr isotopic data and other chemical data indicate major lunar differentiation at about 4.6 AE and very limited subsequent differentiation. The constraints of limited differentiation post 4.6 AE and the apparent lack of H2O on the moon, when ...
Albee, A. L., Gancarz, A. J.
core   +4 more sources

Holocene climate oscillations, seismotectonic events and human–environmental interactions reconstructed from the Giannades palaeolake on Corfu (Eastern Mediterranean, Greece)

Journal of Quaternary Science, EarlyView.
ABSTRACT The Mediterranean is particularly sensitive to rapid climate changes (RCCs) during the Holocene. An increasing number of natural climate archives revealed that socio‐economic developments were influenced by such RCCs since the Palaeolithic. However, multi‐millennial and high‐resolution archives are still rare and often located in mountainous ...
Esra Reichert, Peter Fischer, Bernd Zolitschka, Tina Georg, Lea Obrocki, Denis Scholz, Katja Sporn, Andreas Vött   +7 more
wiley   +1 more source

Effect of the vintage year on strontium isotopic ratio (⁸⁷Sr/⁸⁶Sr) of wines: a Portuguese case study. [PDF]

J Sci Food Agric
Abstract BACKGROUND Currently, there is a growing need for wine authenticity tools to face the global wine market and deal with adulteration cases. Stable isotope analyses, recognized by the Organization of Vine and Wine as a tool for detecting authenticity fraud, form the basis of the European Wine Databank, which faces limitations concerning the ...
Thanasi V, Evola D, Victorino G, Ricardo-da-Silva JM, Madeira M, Catarino S.   +5 more
europepmc   +2 more sources