نتایج جستجو برای: ilex
تعداد نتایج: 1593 فیلتر نتایج به سال:
This paper outlines a text generation system suited to a large class of information sources, relational databases. We focus on one aspect of the problem: the additional information which needs to be specified to produce reasonable text quality when generating from relational databases. We outline how databases need to be prepared, and then describe various types of domain semantics which can be...
Eleven new triterpene saponins, ilexpublesnins C–M (1–11), along with ten known analogues were isolated from the roots of Ilex pubescens. Their structures were elucidated on the basis of extensive spectroscopic analysis, including 1D and 2DNMR experiments. Compounds 1, 2, 10, and 11 contain a 24-aldehyde, which is rare for triterpene saponins from Ilex. These compounds were evaluated in vitro f...
Recent studies have shown that phenolic compounds present in yerba mate have antioxidant defense properties. To verify whether Ilex paraguariensis extracts are capable of increasing the lifespan of an organism, we have used the free-living nematode Caenorhabditis elegans. Notably, this is the first study that analyzes the effects of the extracts of yerba mate obtained from an extraction method ...
Ten triterpenoid glycosides, including five new ones (1-5), were isolated from the leaves of Ilex pernyi. The chemical structures of 1-5 were determined on the basis of the chemical and spectroscopic evidence.
UNLABELLED PREMISE OF THE STUDY Ilex paraguariensis is a native tree species from Brazil, Argentina, and Paraguay that is used in the production of beverages, medicines, and cosmetics. Primers flanking microsatellites were developed to investigate genetic parameters in the species. • METHODS AND RESULTS Using microsatellites cloned from an I. paraguariensis shotgun genomic library, 25 pair...
Climate change is predicted to increase the aridity in the Mediterranean Basin and severely affect forest productivity and composition. The responses of forests to different timescales of drought, however, are still poorly understood because extreme and persistent moderate droughts can produce nonlinear responses in plants. We conducted a rainfall-manipulation experiment in a Mediterranean fore...
The mycorrhizal colonisation of plants grown in unmanaged soils from two restoration sites with a fire history in Northern Portugal was evaluated from the perspective of supporting restoration programmes. To promote restoration of original tree stands, Quercus ilex L. and Pinus pinaster Ait. were used as target species on two sites, denoted Site 1 and 2 respectively. The aim of the study was to...
We will demonstrate the ILEX system, a system which dynamically generates descriptions of database objects for the web, adapting the description to the discourse context and user type. Among other improvements in version 3, the system now generates from relational databases, and this demonstration will focus on this ability. We will also show how incremental extensions to the domain semantics i...
Stored non-structural carbohydrates (NSC) have been proposed as a key determinant of drought resistance in plants. However, the evidence for this role is controversial, as it comes mostly from observational, short-term studies. Here, we take advantage of a long-term experimental throughfall reduction to elucidate the response of NSC to increased drought 14 years after the beginning of the treat...
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