نتایج جستجو برای: variation center introduction

تعداد نتایج: 923117  

2006
STEVEN G. BOXER

I. What are we trying to model? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265 A. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265 B. Reaction-center components . . . . . . . . . . . . ....

Journal: :Pediatrics 2013
Brandon W Alleman Edward F Bell Lei Li John M Dagle P Brian Smith Namasivayam Ambalavanan Matthew M Laughon Barbara J Stoll Ronald N Goldberg Waldemar A Carlo Jeffrey C Murray C Michael Cotten Seetha Shankaran Michele C Walsh Abbot R Laptook Dan L Ellsbury Ellen C Hale Nancy S Newman Dennis D Wallace Abhik Das Rosemary D Higgins

OBJECTIVE To examine factors affecting center differences in mortality for extremely low birth weight (ELBW) infants. METHODS We analyzed data for 5418 ELBW infants born at 16 Neonatal Research Network centers during 2006-2009. The primary outcomes of early mortality (≤12 hours after birth) and in-hospital mortality were assessed by using multilevel hierarchical models. Models were developed ...

Journal: :Frontiers in animal science 2023

Introduction The textile industry considers alpaca fiber to be a specialty fiber. aim of this study was evaluate the influence color, breed, location, age, and sex alpacas on quality characteristics staple length. Methods Fiber samples were taken from mid-side 118 Huacaya Suri at two livestock shows (Pitumarca Maranganí) CICAS La Raya (South American Camelid Research Center), which is located i...

Journal: :بوم شناسی کشاورزی 0
مهدی نصیری محلاتی علیرضا کوچکی مریم جهانی

within-field variation of wheat yield and spatial pattern of weed density and soil nitrogen were evaluated by geostatistical methods. samples were taken from a 90×120 m area located in a 3.8 ha wheat field. soil nitrogen content and weed density at tillering and wheat yield at maturity were measured in 1 m2 plots located at the center of 10×10 m grids. grain yield was varied between 1.5-4.9 t h...

2007
Claire Manen

THE TRANSITION FROM the Mesolithic to the Early Neolithic in the western Mediterranean is a stimulating subject for more than one reason. First, the region’s geographic position means that it is a case of ‘distant Neolithisation’ (between 2000–3500 km) from the presumed epicentre of Neolithisation in south-east Asia, around the Turko-Syrian border. Attempting to grasp the economic, social or sy...

2008
JOSÉ F. CARIÑENA GIUSEPPE MARMO

In this paper we present a survey of the use of differential geometric formalisms to describe Quantum Mechanics. We analyze Schrödinger and Heisenberg frameworks from this perspective and discuss how the momentum map associated to the action of the unitary group on the Hilbert space allows to relate both approaches. We also study Weyl-Wigner approach to Quantum Mechanics and discuss the implica...

2010
Laura Yáñez-Espinosa

INTRODUCTION A 20% of world cycad species are found in Mexico, 80% of which are endemic (Vovides, 2000). At least nine species are present in the state of San Luis Potosí: Dioon edule, Zamia fi scheri, Z. loddigesii, Ceratozamia hildae, C. kuesteriana, C. latifolia, C. mexicana, C. microstrobila, and C. zaragozae (Yáñez-Espinosa, 2006) [Ed’s note: Zamia vazquezii is also found in San Luis Potos...

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