Results 31 to 40 of about 7,711 (265)

WINTER WHEAT PRODUCTIVITY IN DEPENDENCE ON THE METHODS OF PRIMARY TILLAGE IN THE NIZHNEE POVOLZHIE

Зерновое хозяйство России, 2019
The result of the study was an establishment of dependence of winter wheat productivity on a method of a primary tillage. There has been identified an advantage of deep chiseling on 0.35–0.37 m over moldboard plowing on 0.20–0.22 m, over disk tillage on ...
Yu. N. Pleskachev, N. A. Bugreev, G. V. Chernomorov, Е. А. Skorokhodov, Е. А. Sharapova   +4 more
doaj   +1 more source

Evolution of Ryegrass Seed Banks Depending on Soil Tillage and Crops [PDF]

Planta Daninha, 2015
The seed bank is characterized by the amount of seeds and other viable reproductive structures in the soil and it is changed by the input and output of seeds, being classified by its permanence in the soil as transient or permanent. The tillage and crops
J. Galvan, M.A. Rizzardi, S.T. Peruzzo, R.F. Ovejero   +3 more
doaj   +1 more source

On positivity of Ehrhart polynomials

, 2018
Ehrhart discovered that the function that counts the number of lattice points in dilations of an integral polytope is a polynomial. We call the coefficients of this polynomial Ehrhart coefficients, and say a polytope is Ehrhart positive if all Ehrhart ...
Alexander Postnikov, Benjamin Braun, Christian Bey, Clara S. Chan, E Ehrhart, Etienne Rassart, F Castillo, Federico Ardila, Federico Castillo, Federico Castillo, FR Rodriguez-Villegas, Fu Liu, Fu Liu, Fu Liu, Fu Liu, Günter M. Ziegler, Harm Derksen, Heinke Conrads, I. G. MacDonald, I. Pak, J. Haglund, Jaron Treutlein, Jeffrey R. Schmidt, Karola Mészáros, Karola Mészáros, Karola Mészáros, Lucia Moura, Matthias Beck, Matthias Beck, N. Berline, P. McMullen, P.R. Scott, Persi Diaconis, Petter Branden, R. King, Richard P Stanley, RICHARD P. STANLEY, Richard P. Stanley, Richard P. Stanley, Richard P. Stanley, Robert Steinberg, Sam Payne, Sylvain E. Cappell, T Hibi, T. Hibi, Takayuki Hibi, Takayuki Hibi, Takayuki Hibi, Welleda Baldoni   +48 more
core   +1 more source

Helmeted hornbill cranial kinesis: Balancing mobility and stability in a high‐impact joint

The Anatomical Record, EarlyView.
Abstract Prokinesis—in which a craniofacial joint allows the rostrum to move relative to the braincase—is thought to confer diverse advantages in birds, mostly for feeding. A craniofacial joint would, however, be a weak link if cranial stability is important. Paradoxically, we have identified a craniofacial joint in helmeted hornbills (Rhinoplax vigil),
Mike Schindler, Benjamin Flaum, Armita Razieh Manafzadeh, Viktoriia Kamska, Kanmani Chandra Rajan, Maria Jose Robles Malagamba, Ruien Hu, Daniel Baum, Mason N. Dean   +8 more
wiley   +1 more source

Relative levels of natural and anthropogenic lead in recent Antarctic snow [PDF]

, 1987
Concentrations of lead have been measured by ultraclean isotope dilution mass spectrometry in large blocks of surface snow collected along a 433-km coast-interior axis in East Antarctica and near the geographic south pole. Slight contamination existed on
Boutron, Claude F., Patterson, Clair C.
core   +1 more source

Description of the skull, braincase, and dentition of Moschognathus whaitsi (Dinocephalia, Tapinocephalia), and its palaeobiological and behavioral implications

The Anatomical Record, EarlyView.
Abstract A subadult Moschognathus whaitsi from the Eastern Cape Province, South Africa, was scanned using synchrotron radiation X‐ray computed tomography (SRXCT). Its subadult state allowed the cranial bones and teeth to be identified and individually reconstructed in 3D.
Tristen Lafferty, Luke A. Norton, Aliénor Duhamel, Julien Benoit   +3 more
wiley   +1 more source

Crescimento de milheto e guandu, desempenho de plantas cítricas e propriedades físicas do solo escarificado em um pomar Growth of millet and pigeon pea, performance of citrus trees, and soil physical properties in a chiselled orchard

Revista Brasileira de Ciência do Solo, 2008
Escarificação do solo e plantas de cobertura em pomares podem ser utilizados para melhorar as condições físicas do solo. Este trabalho teve como objetivo avaliar a influência da escarificação no crescimento de adubos verdes, no desempenho das árvores e ...
Ivan Bordin, Carmen Silvia Vieira Janeiro Neves, Pedro Francio Filho, Edilene Aparecida Preti, Carina Cardoso   +4 more
doaj   +1 more source

Resistência à penetração e rendimento da soja após intervenção mecânica em latossolo vermelho sob plantio direto. [PDF]

, 2014
201
DENARDIN, J. E., DRESCHER, G. L., DRESCHER, M. S., ELTZ, F. L. F., FAGANELLO, A.   +4 more
core   +1 more source

Under the Shade of a Coolabah Tree: A Second Cache of Tulas From the Boulia District, Western Queensland

Archaeology in Oceania, EarlyView.
ABSTRACT This paper reports on the excavation of a cache of stone artefacts, buried on the bank of a waterhole or ‘billabong’ in central western Queensland. This is an extremely rare find, and yet it is the second such site to be reported within less than a 10 km radius.
Yinika L. Perston, Lynley A. Wallis, Heather Burke, Lorna Bogdanek, Trevina Rogers, Justine Kemp   +5 more
wiley   +1 more source

Guided transpositional bone blocks in esthetic zone: Surgical technique and case report

Clinical Advances in Periodontics, EarlyView.
Abstract Background The ultimate objective of implant dentistry is to position the implant in a three‐dimensional, prosthetic‐driven location. This case highlights a guided approach for harvesting and positioning an autogenous bone block to restore a horizontal bone defect in the anterior maxilla.
Ming‐Fu Ye, Dumitru Chele, Javier Calatrava, Abdusalam Alrmali, Wen‐Xia Huang, Hom‐Lay Wang   +5 more
wiley   +1 more source