1,721,286 research outputs found
Cover cropped and tilled table grape vineyard: Data on leaves and stems
Full text linkData presented are on mass, length, SPAD and some physiological parameters of leaves and stems in a table grape vineyard of Italia variety grafted onto 1103 Paulsen, covered with a plastic sheet to advance ripening and managed with two soil systems in the Puglia region, South-eastern Italy in 2015 and 2016. The two systems differed for the soil management since in one area of the vineyard a cover crop was used (Trifolium repens L.), whereas in the other area only soil tillage was adopted. The data of the two seasons include: (a) mass of leaves of primary shoot, secondary shoot and opposite the cluster; (b) length of secondary shoots; (c) number of both secondary shoots and leaves of secondary shoots; (d) SPAD values and area of leaves opposite both first and second cluster on the primary shoot; (e) mass of stems of both primary and secondary shoots; and (f) some physiological parameters (Ψstem, temperature, Fv/Fm). The data in this article support and augment information presented in the research article 'Cover crops in the inter-row of a table grape vineyard managed with irrigation sensors: effects on yield, quality and glutamine synthetase activity in leaves' (Sci. Hortic. 281, 2021 https://doi.org/10.1016/j.scienta.2021.109963)
A simple polarimetric field characterisation in reverberating chambers
No full textA reverberating chamber (RC) is an electrically large cavity in which the electromagnetic field is properly randomised. The randomisation process generates a non-planar field. Here, the recent polarimetric characterisation of non-planar fields is first introduced to describe the field in an RC. The approach is simple and effective and is used on measured data acquired at the mode-stirred RC available at the Universita degli Studi di Napoli Parthenope, formerly Istituto Universitario Navale (IUN). The approach provides a quantitative evaluation of the RC field randomisation process
The K-generalized Fading Model to Characterize Marine Features in SAR Images: First Results
No full text
Bud Structure and Evolution
No full textIn temperate climates, the buds of deciduous fruit trees are dormant during the autumn and winter when the coldest temperatures occur. It is commonly assumed that this rest period consists of an endo-dormancy phase, followed by an eco-dormancy phase, and finishes with para-dormancy during the growing season. Ficus carica (common fig) is a deciduous species in most of the world but is evergreen in tropical areas. The common fig produces both vegetative and flower buds at the axil of the leaves in summer-fall, and some of them evolve into fruits during the current season (main crop), and others could overwinter (breba crop in the successive season or dormant and latent mixed/vegetative buds)
Reverberating Chambers as Sources of Stochastic Electromagnetic Field
No full textReverberating chambers are of recognized relevance in many EMC applications since they allow us to generate a reference electromagnetic statistical field. This paper investigates the electromagnetic field in reverberating chambers. Reverberating chambers are large overmoded cavities wherein a nonstationary electromagnetic field is present. This electromagnetic field is stochastic in nature; therefore, proper analytical tools need to be considered in order to characterize it. We deal with the theoretical aspects related to the characterization of the electromagnetic field inside the chamber and with the application to the case of the reverberating chamber of the Istituto Universitario Naval
On the Coherence Time Control of a Continuous Mode Stirred Reverberating Chamber
No full textIn this communication, a new methodology on the control of the mode-stirred reverberating chamber (RC) coherence time is accom- plished. This communication shows how it is possible to evaluate the RC coherence time values with the method of the normalized autocorrelation function (ACF). The coherence time values obtained from measured data via the ACF have been used in a channel simulator and then the computed constellation has been compared with measurements for a global system for mobile communication (GSM) signal. A visual inspection of the con- stellation as well as the comparison of measured and computed modula- tion error rate (MER) and bit error rate (BER) values have been done. The methodology is general and actually applicable to a large class of electro- magnetic digital input signals, once that no error of modulation occurs and the channel does not cause distortion in the received signal
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