Search results for "Flower"
showing 10 items of 238 documents
Synthesis of self-assembled mesoporous 3D In2O3 hierarchical micro flowers composed of nanosheets and their electrochemical properties
2018
This report describes the methodology for the fabrication of mesoporous In2O3 microflowers by hydrothermal and calcination procedures in which In(OH)3/In2S3 acts as an intermediate. Both In2O3 and its precursor were analyzed with scanning electron microscopy, energy dispersive X-ray spectrophotometry, transmission electron microscopy and powder X-ray diffraction. BET surface area, pore size and pore volume analyses were also carried out. Electron microscopy images clearly evidence the self-assembly of 2D nanosheets into the micro flower structure. The mechanism of self-assembly and calcination is reported. Electrochemical properties of the synthesized In2O3 micro flowers were studied.
Psychosocial stress, catecholamines, and essential fatty acid metabolism in rats.
1994
To examine the effects of psychosocial stress and the "stress hormone," epinephrine, on essential fatty acid metabolism in rats, two studies were conducted. In the first, the effects of four weeks of (i) social isolation and (ii) group housing (control) on liver microsomal delta 6 and delta 5 n-6 desaturase activity were studied in group-reared male normotensive (Wistar Kyoto) and spontaneously hypertensive (SHR) rats (n = 5/group). The second study examined the effects of acute ip epinephrine (0.0, 1.0, 2.0, and 4.0 mg/kg) 6 hr prior to and following an ig dose (4 g/kg) of safflower oil (rich in 18:2n-6, LA) on plasma and liver LA, 20:4n-6 (AA), and LA/AA ratios in adult essential fatty ac…
Cultivable microorganisms associated with honeys of different geographical and botanical origin
2014
In this study, the composition of the cultivable microbial populations of 38 nectar honey and honeydew honey samples of different botanical and geographical origin were assessed. After growth in specific media, various colonies with different appearance were isolated and purified before phenotypic (morphological, physiological and biochemical traits) and genotypic [randomly amplified polymorphic DNA (RAPD), repetitive DNA elements-PCR (rep-PCR) and restriction fragment length polymorphism (RFLP)] differentiation. The identification was carried out by 16S rRNA gene sequencing for bacteria and, in addition to RFLP, by sequencing the D1/D2 region of the 26S rRNA gene for yeasts and the 5.8S-IT…
Sicilian floriculture companies and the role of transport in increasing their competitiveness
2008
The aim of this study is to provide a deeper understanding of the Sicilian floriculture sector, which has recently become one of the most important on a regional and national scale. By analysing production, sales and logistical aspects of its production companies and specifically looking at aspects regarding transport logistics, this study highlights the sector operators. preference for road transport that offers better guarantees in terms of delivery speed with respect to other means of transport, an essential requirement for the transport of flowers and plants. However, operators are increasingly showing interest in alternative means of transport that may reduce transport time and, especi…
The competitive development of flowers and ornamentals firms through the use of web-marketing strategies: a survey in the convergence objective regio…
2011
The growth of ICT, and in particular the integrated use of internet within firm marketing strategies, has brought about deep changes at both sector and firm level. Firm processes have been drastically modified in their communication and promotional aspects. In particular, firmcustomer relationships are changing and therefore internet represents a preferential means, not only for transferring the firm image in the global communication, but above all in order to build a dialogue and a continuous interaction which contribute to consumers’ fidelization. This empirical research proposal is to be considered in the framework of “Business to Consumer” relationships and is addressed to the flowers a…
Recent Evolutions of Roundabouts: Methodological Issues and Practical Concerns.
2013
The aim of the research is to provide a choice criterion between innovative roundabouts (turbo-roundabouts and flower-roundabouts) and double-lane roundabouts by evaluating convenience in terms of performances, when traffic demand is known. For this purpose, comparisons of operational performances at innovative roundabouts with regard to those at traditional roundabouts were developed. We started from consistent assumptions regarding the arrival process of major streams and used capacity models founded on gap-acceptance theory. Having in mind a bunched exponential headways distribution, we proposed adaptations of the Hagring model for estimating entry capacity at intersections under examina…
Classification of varieties for their timing of flowering and veraison using a modelling approach: A case study for the grapevine species Vitis vinif…
2013
16 pages; International audience; tUnderstanding differences in phenology for varieties of a given species is important for making informeddecisions on variety choice in the context of climate change and breeding new cultivars. Phenologicalmodels that incorporate temperature as a key environmental factor can be used to describe the differencesin phenological timing between cultivars. This paper outlines a methodology, based on a phenologicalmodel, for classifying the timing of flowering and veraison for a substantial number of varieties of thegrapevine (Vitis vinifera L.). 95 varieties were characterized for flowering and 104 varieties for veraison.Various statistical measures were used to …
An Overview on the Status of Toxigenic Fungi and Mycotoxins in Spain
2004
Mycotoxins are a group of secondary metabolites which are produced by various filamentous fungi, and which can produce a toxic response in animals or humans after ingestion of contaminated food. The main toxigenic fungi isolated from foods and feeds belong to the genera Penicillium, Aspergillus, Fusarium and Alternaria. Spores of these moulds are almost universally present everywhere, they fall on plants and, under appropriate conditions, they can germinate and generate mycelia causing crop spoilage and/or production of mycotoxins.
Plants in the UK flower a month earlier under recent warming.
2022
Global temperatures are rising at an unprecedented rate, but environmental responses are often difficult to recognize and quantify. Long-term observations of plant phenology, the annually recurring sequence of plant developmental stages, can provide sensitive measures of climate change and important information for ecosystem services. Here, we present 419 354 recordings of the first flowering date from 406 plant species in the UK between 1753 and 2019 CE. Community-wide first flowering advanced by almost one month on average when comparing all observations before and after 1986 ( p < 0.0001). The mean first flowering time is 6 days earlier in southern than northern sites, 5 days earlier…
Why Africa matters: evolution of Old World Salvia (Lamiaceae) in Africa
2014
BACKGROUND AND AIMS Salvia is the largest genus in Lamiaceae and it has recently been found to be non-monophyletic. Molecular data on Old World Salvia are largely lacking. In this study, we present data concerning Salvia in Africa. The focus is on the colonization of the continent, character evolution and the switch of pollination systems in the genus. METHODS Maximum likelihood and Bayesian inference were used for phylogenetic reconstruction. Analyses were based on two nuclear markers [internal transcribed spacer (ITS) and external transcribed spacer (ETS)] and one plastid marker (rpl32-trnL). Sequence data were generated for 41 of the 62 African taxa (66 %). Mesquite was used to reconstru…