Arable land weed seed banks are dynamic and reflect cropping history, current management, and environment. Changes in crop rotation and tillage system can alter weed seed density and species composition. In the semi-arid region of the Pacific Northwest, USA, no-till spring cropping is being studied as an alternative to the traditional winter wheat (Triticum aestivum L.)/dust-mulch fallow (WWF) ...

A subpolar front (SPF) generated between the East Korea Warm Current (EKWC) and North Cold (NKCC) in western margin of East/Japan Sea has shifted northward recent decades. This study investigated biomass composition phytoplankton assemblage relation to hydrological biogeochemical features shallow shelf slope off Korean coast from January June 2016 2017, determine mechanistic effects SPF on spri...

the seeds of three eucalyptus species (myrtaceae) (origin: australia), including:, eucalyptus loxophleba benth., eucalyptus microtheca f.muell.  and eucalyptus largiflorens f.muell. were cultivated in 1993-1994 at two research stations (shushtar and dezful) in khuzistan province (western south region of iran) and a research station (kashan) in isfahan province (central region of iran). these sp...

Commercially available prosthetic hands are simple grippers with one or two degrees of freedom; these pinch type devices have two rigid fingers in opposition to a rigid thumb. This paper focuses on an innovative approach for the design of a myoelectric prosthetic hand. The new prosthesis features underactuated mechanisms in order to achieve a natural grasping behavior and a good distribution of...

800x600 normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background: this study’s aim was to design and validate a semi-quantitative food frequency questionnaire (ffq) for assessment of fruits and vegetables (fv) consumption in adults of isfahan by comparing the ffq with dietary reference method and blood plasma levels of beta-carotene, vitamin c, and retinol. methods: t...

This report makes a case for the need to examine the methodological foundations of AI. Many aspects of AI have not yet developed to a point of general agreement. The goals of AI work, the methods for acheiving these goals, the presentation of results, and the assessment of claims are all highly contentious issues. All aspects of AI methodology are subject to debate The Workshop on the Foundatio...

Problem 1. Infinite Products and Coproducts in Ab. We have seen that finite products and coproducts agree in Ab. However, the same is not true for infinite products and coproducts. Let I be a set and let {Ai}i∈I be a family of abelian groups, each equal to some fixed group A. (a) Show that the set AI := HomSet(I, A) is an abelian group. Furthermore, show that we can think of this group as the i...

Performance of eight spring-flowering bulbs, Chionodoxa sp. ‘Blue Giant’ (glory-of-the-snow), Crocus tommasinianus ‘Ruby (crocus), vernus ‘Remembrance’ Narcissus ‘Ice Follies’, N. ‘Tete-a-Tete’, ‘Thalia’ (daffodil), Muscari Magic’ (grape hyacinth), and Scilla sybirica (Siberian squill), was evaluated after planting into cool season tall fescue lawn [Lolium arundinaceum (Schreb.) Darbysh. (syn. ...