New times of minima of some eclipsing binary stars

We present several CCD minima observations of eclipsing binaries

ASPECTS REGARDING THE CONDITIONING OF HORTICULTURAL PRODUCTS IN FRESH STATE

This paper presents the conditions and equipment underlying the work processes within the flow of conditioning technologies of horticultural products, in order to prolong the life and freshness of fruits, from the time of harvest and storage, to their marketing for consumption

CURRENT STATUS IN THE CONSTRUCTION OF EQUIPMENTS FOR DEEP CHISELLING OF THE SOIL WORLDWIDE

This paper presents the main achievements of the largest manufacturers of machinery and equipment for deep soil loosening, by highlighting the specific features of each product so that they achieve a very good profoundness and soil loosening, using a small power source, on the same working widt

THEORETICAL RESEARCH ON THE WORKING PROCESS OF COMPLEX AGGREGATES FOR SOIL TILLAGE - REVIEW

The paper presents a summary of theoretical research developed in the country, related to the design and optimization of complex aggregates for soil processing and the improvement of their quality indices of work

The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation

Haumea—one of the four known trans-Neptunian dwarf planets—is a very elongated and rapidly rotating body1, 2, 3. In contrast to other dwarf planets4, 5, 6, its size, shape, albedo and density are not well constrained. The Centaur Chariklo was the first body other than a giant planet known to have a ring system7, and the Centaur Chiron was later found to possess something similar to Chariklo’s rings8, 9. Here we report observations from multiple Earth-based observatories of Haumea passing in front of a distant star (a multi-chord stellar occultation). Secondary events observed around the main body of Haumea are consistent with the presence of a ring with an opacity of 0.5, width of 70 kilometres and radius of about 2,287 kilometres. The ring is coplanar with both Haumea’s equator and the orbit of its satellite Hi’iaka. The radius of the ring places it close to the 3:1 mean-motion resonance with Haumea’s spin period—that is, Haumea rotates three times on its axis in the time that a ring particle completes one revolution. The occultation by the main body provides an instantaneous elliptical projected shape with axes of about 1,704 kilometres and 1,138 kilometres. Combined with rotational light curves, the occultation constrains the three-dimensional orientation of Haumea and its triaxial shape, which is inconsistent with a homogeneous body in hydrostatic equilibrium. Haumea’s largest axis is at least 2,322 kilometres, larger than previously thought, implying an upper limit for its density of 1,885 kilograms per cubic metre and a geometric albedo of 0.51, both smaller than previous estimates1, 10, 11. In addition, this estimate of the density of Haumea is closer to that of Pluto than are previous estimates, in line with expectations. No global nitrogen- or methane-dominated atmosphere was detected.J.L.O. acknowledges funding from Spanish and Andalusian grants MINECO AYA-2014-56637-C2-1-P and J. A. 2012-FQM1776 as well as FEDER funds. Part of the research leading to these results received funding from the European Union’s Horizon 2020 Research and Innovation Programme, under grant agreement no. 687378. B.S. acknowledges support from the French grants ‘Beyond Neptune’ ANR-08-BLAN-0177 and ‘Beyond Neptune II’ ANR-11-IS56-0002. Part of the research leading to these results has received funding from the European Research Council under the European Community’s H2020 (2014-2020/ERC grant agreement no. 669416 ‘Lucky Star’). A.P. and R.S. have been supported by the grant LP2012-31 of the Hungarian Academy of Sciences. All of the Hungarian contributors acknowledge the partial support from K-125015 grant of the National Research, Development and Innovation Office (NKFIH). G.B.-R., F.B.-R., F.L.R., R.V.-M., J.I.B.C., M.A., A.R.G.-J. and B.E.M. acknowledge support from CAPES, CNPq and FAPERJ. J.C.G. acknowledges funding from AYA2015-63939-C2-2-P and from the Generalitat Valenciana PROMETEOII/2014/057. K.H. and P.P. were supported by the project RVO:67985815. The Astronomical Observatory of the Autonomous Region of the Aosta Valley acknowledges a Shoemaker NEO Grant 2013 from The Planetary Society. We acknowledge funds from a 2016 ‘Research and Education’ grant from Fondazione CRT. We also acknowledge the Slovakian project ITMS no. 26220120029

Exploring Wild Tomato Species for Morphological Traits, Mineral Elements and Known Disease Resistance Genes

Tomato is one of the worldwide major foods consumed fresh, cooked, or processed. Mineral elements, vitamins, and antioxidant content of tomatoes are of interest because of their nutritional value and beneficial health effects. The present study was performed to evaluate the macro-and micro-elements contents of leaves and fruits of seven wild tomato species, in addition to morphological traits. Wild tomato species had variations for all elements in fruits. Coefficient of variation was calculated for elements as 18.50 to 94.32% for potassium and phosphor, respectively. Most of the wild tomato species had higher content of all mineral elements than cultivated tomato. Resistance genes (Frl, I-2, I-3, Mi-3, Pto Ty-1, Ty-3 and Sw-5) of wild tomato species were screened using molecular markers. LA1971, with six resistant genes, and LA1393 and LA1777, with five resistant genes, were considered the most promising parental candidates for breeding. The results of the analysis of mineral elements of seven wild tomatoes species are useful for future tomato breeding. © 2023, Tarbiat Modares University. All rights reserved.This work was supported by BAP (Scientific Research Projects and Project Number: FBA-2018-3414) in Turkey.Bilimsel Araştırma Projeleri Birimi, İstanbul Teknik Üniversitesi, BAP: FBA-2018-341