Soils play a key role in the global carbon cycle. They can be a source or a sink of carbon and in ̄uence CO2 concentrations in the atmosphere. In order to calculate the carbon budget of a region, the effect of soil management practices on carbon sequestration in soils needs to be quanti®ed. Objectives of this experiment were to determine: (i) the effects of ridge till, plow till and no-till on t...

Over the past two years, research on drift prospecting in the District of Keewatin has been directed towards developing reconnaissance and detailed sampling techniques that can indicate uranium mineralization a s well a s base metal mineralization. Shilts and Klassen (1976) have presented some preliminary results of the uranium phase for Boothia Peninsula and central Keewatin. The purposes of t...

In a t im e o f m ora l u n c e r ­ t a i n t y , A m e r i c a n e e d s to return to the id e a s o f fa ith and v a lu e s and b rin g th e m into the pub lic d ia lo g u e on issues , using them as a u n i­ fying factor, said D em ocratic Vice P r e s id e n t ia l c a n d id a t e Senator Joseph Lieberman in an a d d r e s s to t h e N o t r e D am e c o m ­ m u n i t y Tuesday. T h e a d ...

Moiré Topography: From Takasaki Till Present Day Flávia Porto1,2,3, Jonas L. Gurgel3,4, Thaís Russomano5 and Paulo T.V. Farinatti2 1Post-Graduate Stricto Sensu in Exercise and Sports Sciences, Gama Filho University (UGF) 2Physical Activity and Health Promotion Laboratory, Institute of Physical Education and Sports, Rio de Janeiro State University (UERJ) 3Biomechanics Research Group of Fluminens...

We established experiments on farmers’ fields at four locations in southcentral Alaska and two locations in interior Alaska. The southcentral Alaska sites were near Anchor Point (59 ̊45'N, 151 ̊39'W) on Edna Anderson’s farm, near Sterling (60 ̊32'N, 150 ̊39'W) on Paul Rumley’s farm, at Point Mackenzie (61 ̊24'N, 150 ̊04'W) on the Trytten Farm, and at Palmer (61 ̊39'N, 150 ̊04'W) on Peter Scorup’s farm ...

Hochgenaue RTK-GPS-Lenksysteme (Real-Time-Kinematik) mit einer Genauigkeit von ± 2,5 cm ermöglichen neue Ansätze für Anbausysteme in Reihenkulturen wie Zuckerrüben und Mais. Unter Verzicht einer Stoppelbearbeitung kann die Grundbodenbearbeitung durch eine Streifenlockerung ersetzt werden, um leitlinengestützt in die gelockerten Streifen auszusäen (Strip-Till). Mit dem Strip-Till-Verfahren wird ...

for X a variety and L a line bundle on X. Denoting by Kp,q(X,L) the cohomology at the middle of the sequence above, one sees immediately that the surjectivity of the map μ0 is equivalent to K0,2(C, KC) = 0, and that if this is the case, the ideal I is generated by quadrics if and only if K1,2(C, KC) = 0. On the other hand, C being non hyperelliptic is equivalent to the fact that the Clifford in...

We present an analysis of the model by Gnanadesikan [1999] for the pycnocline depth in the ocean. An analytic solution for the overturning strength as a function of the meridional pressure difference is derived and used to discuss their mutual scaling. We show that scaling occurs only in two unphysical regimes of the model. In the absence of the Southern Ocean (SO) processes, i.e. for a norther...

A number of economic and environmental benefits are associated with the use of no-till in production agriculture in the United States. There are lower labor, energy, and machinery costs associated with no-till farming relative to conventional tillage systems and other types of conservation tillage. Reduced erosion and runoff associated with no-till also lead to a number of environmental benefit...