Results 11 to 20 of about 264,275 (302)
Nonlinear relaxation field in charged systems under high electric fields [PDF]
, 2000 The influence of an external electric field on the current in charged systems is investigated. The results from the classical hierarchy of density matrices are compared with the results from the quantum kinetic theory.
A. Esser +46 more
core +4 more sources
Alien plant species distribution in Romania: a nationwide survey following the implementation of the EU Regulation on Invasive Alien Species [PDF]
Biodiversity Data JournalBiological invasions pose an increasing risk to nature, social security and the economy, being ranked amongst the top five threats to biodiversity.
Paulina Anastasiu +41 more
doaj +3 more sources
Agronomy, 2021 Farmer seed systems come in many shades: Conserving, producing, and using diverse plant material for different motives and purposes, whether the conservation or selection of locally adapted plant varieties and populations, or the safeguard of social ...
Fulya Batur +2 more
doaj +1 more source
OENO One, 1979 Les microorganismes rencontrés dans les moûts et les vins : levures, bactéries lactiques et acétiques, sont représentés par un nombre limité d'espèces. Les auteurs proposent une technique rapide de dénombrement sélectif des trois populations en mélange ...
Suzanne Lafon-Lafourcade, Annick Joyeux
doaj +1 more source
An endopolygalacturonase gene of Diaporthe helianthi
Phytopathologia Mediterranea, 2012 In an attempt to define virulence determinants of Diaporthe helianthi, the causative agent of sunflower stem canker, the gene named Dhpg, coding for an endopolygalacturonase, was investigated in the highly virulent strain 8/96 isolated from a diseased ...
Valentina CATALANO +4 more
doaj +1 more source
Seroprevalence of Ebola virus infection in Bombali District, Sierra Leone [PDF]
, 2017 A serosurvey of anti-Ebola Zaire virus nucleoprotein IgG prevalence was carried out among Ebola virus disease survivors and their Community Contacts in Bombali District, Sierra Leone. Our data suggest that the specie of Ebola virus (Zaire) responsible of
Antonella Minutolo +13 more
core +2 more sources
Evolution: Education and Outreach, 2009 A clear understanding of the term "species" is fundamental to the subject of evolution. However, introductory textbooks often fail to address this topic until one of the later chapters, after having used the term species in all preceding chapters. Furthermore, definitions of terms critical to a clear understanding of this subject are often vague or ...
Ellis, Mark W., Wolf, Paul G.
openaire +3 more sources
Multivariate models to classify Tuscan virgin olive oils by zone.
Grasas y Aceites, 1999 In order to study and classify Tuscan virgin olive oils, 179 samples were collected. They were obtained from drupes harvested during the first half of November, from three different zones of the Region. The sampling was repeated for 5 years. Fatty acids,
Stefano Alessandri +4 more
doaj +1 more source
RNA, 2007 Given two organisms, how can one distinguish whether they belong to the same species or not? This might be straightforward for two divergent organisms, but can be extremely difficult and laborious for closely related ones. A molecular marker giving a clear distinction would therefore be of immense benefit.
Tobias, Müller +4 more
openaire +2 more sources
Influence of seed provenance on the propagation of Picea abies (L.) Karst
Advances in Horticultural Science, 2015 Picea abies (L.) Karst. is the most common species cultivated in Italy for sale as Christmas trees. The aim of this study was to identify the best seed provenance to improve plant production.
L.M.R. Rinaldi +2 more
doaj +1 more source