Electrically driven subwavelength scale metallo-dielectric pedestal pillar lasers are designed and experimentally demonstrated. The cavity significantly enhances the quality factor (Q > 1500) of wavelength structure reduces threshold gain (< 400 cm(-1)) which can potentially enable laser operation at room temperature. We observed continuous wave lasing in 750 nm core radius temperatures between 77 K 140 with a current 50 μA (at K). also from 355 100 K.

Managing N inputs in wheat production systems is an important issue order to achieve maximum profitable production, and minimum negative environmental impact.The aim of this investigation carried out dry land farming the Vojvodina province (Serbia) was estimate effects different fertilization levels (0, 75, 150 kg ha -1 ) on some quantitative traits, rain-use efficiency (RUE), agronomic (NAE), use (NUE) two Serbian winter (Triticum aestivum L.) cultivars 'Pobeda' 'Renesansa'.'Pobeda' had...

Faced with the challenges posed by climate change, Serbian viticulture is looking for sustainable solutions adaptable production. This study shows that grass a multifunctional tool overcoming of intensive while maintaining quality grapes. In three-year research experiment (2020–2022), maintenance an inter-row sward in vineyard four certified high-quality French Cabernet Sauvignon clones was investigated, and its effects on ampelographic composition grapes grape juice (must) were studied as...

Measurement of the Kerr nonlinearity in silicon is reported 2350 nm to 2750 wavelength range, where three-photon absorption effect present. The measurements confirm that interaction strength comparable near-infrared. measured dispersion trend for coefficient consistent with obtained using Kramers-Krönig relations. Three-photon was measured, and its on nonlinear figure merit appears not be as restrictive two-photon absorption. results identify a promising platform parametric processes...

An etch-free fabrication technique for creating low loss silicon waveguides in the silicon-on-insulator material system is proposed and demonstrated. The approach consists of local oxidation a chip covered with e-beam patterned hydrogen silsesquioxane mask. A single step converts to glass-like compound simultaneously defines waveguides, bypassing need any wet or dry etching steps. spectral response ring resonators fabricated using this was used characterize waveguide losses. Intrinsic...

During post-harvest maturation, different species vary in the length of dormancy breaking or germination increases. Seed and slow seedling development often limit establishment forage grass stands. vigour Italian ryegrass (Lolium italicum A. Braun, Synonym Lolium multiflorum L.), cocksfoot (Dactylis glomerata L.) timothy (Phleum pretense were observed after harvest storage. After June, seeds stored under standard storage conditions sampled every 30 days (DAH), up to 270 DAH, then 60 990 DAH....

The aim of this investigation was to estimate the effects foliar fertilization on quantitative traits (plant height, first pod number nodes per plant, pods grain yield 1000-grain weight and yield) in two soybean cultivars (Balkan Becejka). Studied belong different maturity groups - I Becejka 0). Four treatments were tested: control (no fertilization), Urea (46 kg N ha-1), ha-1) + Wuxal super (5 l Ferticare ha-1). applied times at R2-R3 growth stage. field experiments carried out dry land...

Metal-clad subwavelength lasers have recently become excellent candidates for light sources in densely packed chip-scale photonic circuits. In this review, we summarize recent research efforts the theory, design, fabrication, and characterization of such lasers. We detail advancements both metallo-dielectric coaxial type lasers: type, discuss operation with optical pumping electrical pumping. For all spontaneous emission coupled into lasing mode, as well smallest metal-clad to date operating...

Rainfall is one of the most important environmental factors influencing crop production under dry land farming conditions. In Republic Serbia, soybean produced rainfed conditions, and therefore online monitoring rainfall use efficiency (RUE) essential for efficient management production. The research aim was to estimate effects amount during growing season (RGS) average monthly on grain yield (GY) in Vojvodina sixteen year period (2000-2015). Distributions RGS were not satisfactory...

The mineralization of nitrogen in apple orchard soil will increase the supply. An incubation study to test potential and validity analytical methods was conducted at 3, 8, 15, 20 °C for up 128 days on soils from western south-eastern Norway. Soils with highest pH showed mineralization. increased increasing temperature time, but start-up N reduced cannot be estimated standard chemical parameters because different C/N ratio indicates organic material origin quality. NO3-N started very quickly...

In the set of bicolored trees with given numbers black and white vertices we describe those for which largest eigenvalue is extremal (maximal or minimal). The results are first obtained by automated system AutoGraphiX, developed in GERAD (Montreal), verified afterwards theoretical means.

We demonstrate an optically pumped hybrid III-V/Si distributed feedback laser with a small footprint, using sidewall modulated Bragg gratings for optical feedback. Our approach provides high overlap between lasing mode and gain medium may enable lasers improved efficiency, reduced threshold, minimal size. fabricate the structure plasma-assisted wafer bonding, followed by self-aligned lithography etching. The latter allows us to avoid alignment errors. This is promising avenue toward...

The main nitrogen (N) sources in soybean production originate from soil fixing bacteria Bradyrhizobium spp. and mineralization of organic N. These N are often not sufficient to cover the needs soybean. present two-year field study aimed evaluate effects genotypes (Valjevka Galina) rates starter fertilizer (0, 30, 60, 90 kg ha−1) on quantitative qualitative parameters rain use efficiency (RUE) under contrasting weather conditions Pannonian region Serbia. A conducted during two different...

The aim of this investigation was to estimate the effects crop density on plant height (PH), stem diameter (SD), number leaves per (NL), forage yield hectare-1 (FY), dry matter (DMY), percentage (SP), leaf (LP) and ear (EP) in two maize hybrids FAO maturity group 600 (ZP 684 NS 6010). Field trials were carried out rainfed farming Srem region (location Putinci: 44?59?19" North 19?58?11" East) during years 2007 2008. Three densities compared: G1 - 51,020 plants ha-1, G2 59,524 ha-1 G3 71,429...

Italian ryegrass (Lolium multiflorum Lam.) cv. Tetraflorum sown with different inter-row spacings and seeding rates was grown under the agroecological conditions of Western Serbia. Field experiments were carried out between 2002 2006, biometric characteristics-generative tillers, seed yield, shoot dry mass-were measured during first production year. 3 row (20, 40, 60 cm), using 4 (5, 10, 15, 20 kg ha^{-1}). Tiller length affected by stand density, while 2 other tiller parameters considerably...

Maize is the very important silage source in world. Timely harvesting ensure high maize forage yield and quality. Therefore, study focused on effects of four times (starting at 12 August every 7 days) qualitative parameters green mass hybrid ZP 677. The experiment was set Vojvodina Province, Serbia, during 2013 2014 growing seasons. Plant height, stem diameter, number leaves per plant, ear percentage, yield, dry matter content crude protein were higher, while percentage lower with favorable...

In this paper, we present a hardware and software platform for signal processing (SPP) in long-range, multi-spectral, electro-optical systems (MSEOS). Such integrate various cameras such as lowlight color, medium or long-wave-infrared thermal short-wave-infrared together with other sensors laser range finders, radars, GPS receivers, etc. on rotational pan-tilt positioner platforms. An SPP is designed the main goal to control all components of an MSEOS execute complex algorithms video...

Due to specific climatic conditions, perennial ryegrass breeding in Serbia is focused on resistance or tolerance abiotic stress factors, especially drought and high temperatures. These traits should be associated with dry matter yield quality. Therefore, most frequently used initial material autochthonous populations ecotypes adapted local agro-ecological but knowledge about their variability of important for missing. Pre-selection evaluation ten originating from presented this paper. Twenty...

Light sources that are compatible with the silicon photonics platform key elements needed for photonic integrated circuits on silicon. Here, we report optically pumped wafer bonded metallodielectric lasers, subwavelength in all three dimensions (250-nm gain core radius) operating at 77 K, as well near-subwavelength (450-nm room temperature.

In this paper we present real-time pixel level video fusion implemented in GStreamer framework as a plugin. The processing is performed two steps. first step image registration, which compensation of the effect different viewing angles and perspective cameras that are observing same scene. second pixel-level using Laplacian pyramid method or simple addition. OpenVX standard used to accelerate algorithm. We also experimental performance results thermal visible light camera.