72 research outputs found

    CHANGES OF PRODUCTIVITY AND QUALITY PARAMETERS OF SPRING DURUM WHEAT KHARKOVSKAYA 46 UNDER INFLUENCE OF ECOLOGICAL FACTORS

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    In the article the data of comparative studies of ‘Kharkovskaya 46’ecological variants which have been cultivated for a long time in Ukraine and in Altai, as well as ‘Altaika’ selected from this variety are presented. The effect of natural selection in the variety transformation at the long term cultivation under definite natural and climatic environments was demonstrated

    Search for sterile neutrinos at the DANSS experiment

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    DANSS is a highly segmented 1~m3{}^3 plastic scintillator detector. Its 2500 one meter long scintillator strips have a Gd-loaded reflective cover. The DANSS detector is placed under an industrial 3.1~GWth\mathrm{GW_{th}} reactor of the Kalinin Nuclear Power Plant 350~km NW from Moscow. The distance to the core is varied on-line from 10.7~m to 12.7~m. The reactor building provides about 50~m water-equivalent shielding against the cosmic background. DANSS detects almost 5000 ν~e\widetilde\nu_e per day at the closest position with the cosmic background less than 3%\%. The inverse beta decay process is used to detect ν~e\widetilde\nu_e. Sterile neutrinos are searched for assuming the 4ν4\nu model (3 active and 1 sterile ν\nu). The exclusion area in the Δm142,sin22θ14\Delta m_{14}^2,\sin^22\theta_{14} plane is obtained using a ratio of positron energy spectra collected at different distances. Therefore results do not depend on the shape and normalization of the reactor ν~e\widetilde\nu_e spectrum, as well as on the detector efficiency. Results are based on 966 thousand antineutrino events collected at 3 distances from the reactor core. The excluded area covers a wide range of the sterile neutrino parameters up to sin22θ14<0.01\sin^22\theta_{14}<0.01 in the most sensitive region.Comment: 10 pages, 13 figures, version accepted for publicatio

    Yield performance and stability of modern breeding stock of spring durum wheat (Triticum durum Desf.) from Russia and Kazakhstan

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    Identifcation of adaptive responses of breeding material, developed in different breeding centers, helps to purposefully correct these traits where it is necessary. Thus, 42 modern breeding lines from eight institutions of Russia and Kazakhstan were studied in comparison with the historical standard Bezenchukskaya 139 in trails of 16-17 and 18 KASIB-SDW (Kazakhstan-Siberian net for wheat improvement, spring durum wheat) in 2015–2017. Field experiments and yield measurements in each ecological cite were similar. To solve these tasks of the experiment, two-factor ANOVA, methods for adaptability assessment cluster analysis and principle component method were applied. As a result, it was established that 1) genotype and genotype – environment interaction (overall 15.8–23.5 % of total dispersion) had signifcant effect on yield variability; 2) genotype – environment interactions were of linear nature and had no destabilizing effect; 3) all the genotypes tested can be distributed in three clusters, the frst one for locally adapted varieties, the third for varieties of a wide areal, the second included genotypes with intermediate characteristics; 4) breeding centers of the Federal Altai Scientifc Centre of Agro-Biotechnologies and of the Research Institute of Agriculture of South-East produced predominantly varieties of local importance, the Samara Research Institute of Agriculture – varieties of wide area; 5) a stable trend of increased mean yield compared to historical standard Bezenchukskaya 139 over ecological sites was observed only for Samara varieties; 6) varieties of all the breeding centers had no stable difference from Bezenchukskaya 139 concerning stability and responsiveness, which can be explained by an incomplete breeding process for these parameters and confrms the importance of the KASIB program; 7) a trend of yield increase compared to Bezenchukskaya 139 under testing in defnite local environments had more stable parameters with the largest progress observed in the Altai Research Institute of Agriculture (135.4 and 163.2 % to Bezenchukskaya 139), which can be explained by a high efciency of breeding of locally adapted varieties in the breeding center

    Opportunities and some results of measuring cultural capital in sociological research practice

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    Nechitailo, I. Opportunities and some results of measuring cultural capital in sociological research practice / Iryna Nechitailo,Pavel Nazarkin, Maryna Biriukova and ot. // AD ALTA : Journal of Interdisciplinary Research. - 2022. - P. 159-166.Розглянуто проблему вимірювання культурного капіталу в сучасній соціологічній практиці. Слідом за Дж. К. Александером автори акцентують увагу на значенні культурних структур у житті індивідів і груп, що актуалізує необхідність їх більш детального вивчення. Визначено ідентифікацію індикаторів для вимірювання культурного капіталу та представлено результати емпіричного дослідження, яке є спробою верифікації цих індикаторів. За результатами досліджень П. Ді Маджіо, К. Дж. Крука, Н. Д. Де Граафа виділено такі показники культурного капіталу, як частота відвідування театрів і кінотеатрів, концертів класичної та сучасної музики, музеїв, виставок тощо; наявність домашньої бібліотеки; частота читання книг, інтернет-статей, новин тощо. Ці показники водночас є ресурсами накопичення певних видів культурного капіталу, таких як «статус» та «знання-інформація» (авторська типологія). Наведено результати вимірювання культурного капіталу українських студентів за наведеними показниками. Наголошено, що трансляція статусного культурного капіталу та знаннєво-інформаційного культурного капіталу є потужним фактором впливу на процеси особистісного розвитку та академічної успішності студентів.The article is devoted to the problem of measuring cultural capital in modern sociological practice. Following J. C. Alexander, authors focus on the significance of cultural structures in individuals' and groups' lives, which actualizes the need for a more detailed study of them. The purpose of the article is to identify indicators for cultural capital measuring and present empirical research results, which is an attempt to verify these indicators. Based on the results of studies by P. DiMaggio, C. J. Crook, N. D. De Graaff, such indicators of cultural capital are highlighted as the frequency of visits to theaters and cinemas, concerts of classical and contemporary music, museums, exhibitions, etc.; having a home library; the frequency of reading books, Internet articles, news, etc. These indicators, at the same time, are the resources of accumulation of certain types of cultural capital such as "status" and "knowledgeinformation" (author's typology). The results of measurements of the cultural capital of Ukrainian students using the above indicators are presented. It is concluded that the transmission of status cultural capital and the knowledge-information cultural capital is a powerful factor in influencing the processes of personal development and academic success of students.Рассмотена проблема измерения культурного капитала в современной социологической практике. Вслед за Дж. К. Александером авторы акцентируют внимание на значении культурных структур в жизни индивидов и групп, что актуализирует необходимость их более детального изучения. Определены индикаторы для измерения культурного капитала и представлены результаты эмпирического исследования, которое является попыткой верификации этих индикаторов. По результатам исследований П. Ди Маджио, К. Дж. Крука, Н. Д. Де Граафа выделены такие показатели культурного капитала, как частота посещения театров и кинотеатров, концертов классической и современной музыки, музеев, выставок и т. д.; наличие домашней библиотеки; частота чтения книг, интернет-статей, новостей и т. д. Эти показатели одновременно являются ресурсами накопления отдельных видов культурного капитала, таких как «статус» и «знание-информация» (авторская типология). Представлены результаты измерений культурного капитала украинских студентов с использованием вышеуказанных показателей. Подчеркнуто, что трансляция статусного культурного капитала и знаниево-информационного культурного капитала является мощным фактором влияния на процессы личностного развития и академических успехов студентов

    First demonstration of 30 eVee ionization energy resolution with Ricochet germanium cryogenic bolometers

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    The future Ricochet experiment aims to search for new physics in the electroweak sector by measuring the Coherent Elastic Neutrino-Nucleus Scattering process from reactor antineutrinos with high precision down to the sub-100 eV nuclear recoil energy range. While the Ricochet collaboration is currently building the experimental setup at the reactor site, it is also finalizing the cryogenic detector arrays that will be integrated into the cryostat at the Institut Laue Langevin in early 2024. In this paper, we report on recent progress from the Ge cryogenic detector technology, called the CryoCube. More specifically, we present the first demonstration of a 30~eVee (electron equivalent) baseline ionization resolution (RMS) achieved with an early design of the detector assembly and its dedicated High Electron Mobility Transistor (HEMT) based front-end electronics. This represents an order of magnitude improvement over the best ionization resolutions obtained on similar heat-and-ionization germanium cryogenic detectors from the EDELWEISS and SuperCDMS dark matter experiments, and a factor of three improvement compared to the first fully-cryogenic HEMT-based preamplifier coupled to a CDMS-II germanium detector. Additionally, we discuss the implications of these results in the context of the future Ricochet experiment and its expected background mitigation performance.Comment: 10 pages, 5 figures, 1 tabl

    Fast neutron background characterization of the future Ricochet experiment at the ILL research nuclear reactor

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    The future Ricochet experiment aims at searching for new physics in the electroweak sector by providing a high precision measurement of the Coherent Elastic Neutrino-Nucleus Scattering (CENNS) process down to the sub-100 eV nuclear recoil energy range. The experiment will deploy a kg-scale low-energy-threshold detector array combining Ge and Zn target crystals 8.8 meters away from the 58 MW research nuclear reactor core of the Institut Laue Langevin (ILL) in Grenoble, France. Currently, the Ricochet collaboration is characterizing the backgrounds at its future experimental site in order to optimize the experiment's shielding design. The most threatening background component, which cannot be actively rejected by particle identification, consists of keV-scale neutron-induced nuclear recoils. These initial fast neutrons are generated by the reactor core and surrounding experiments (reactogenics), and by the cosmic rays producing primary neutrons and muon-induced neutrons in the surrounding materials. In this paper, we present the Ricochet neutron background characterization using 3^3He proportional counters which exhibit a high sensitivity to thermal, epithermal and fast neutrons. We compare these measurements to the Ricochet Geant4 simulations to validate our reactogenic and cosmogenic neutron background estimations. Eventually, we present our estimated neutron background for the future Ricochet experiment and the resulting CENNS detection significance.Comment: 14 pages, 14 figures, 1 tabl

    Coherent elastic neutrino-nucleus scattering: Terrestrial and astrophysical applications

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    Coherent elastic neutrino-nucleus scattering (CEν\nuNS) is a process in which neutrinos scatter on a nucleus which acts as a single particle. Though the total cross section is large by neutrino standards, CEν\nuNS has long proven difficult to detect, since the deposited energy into the nucleus is \sim keV. In 2017, the COHERENT collaboration announced the detection of CEν\nuNS using a stopped-pion source with CsI detectors, followed up the detection of CEν\nuNS using an Ar target. The detection of CEν\nuNS has spawned a flurry of activities in high-energy physics, inspiring new constraints on beyond the Standard Model (BSM) physics, and new experimental methods. The CEν\nuNS process has important implications for not only high-energy physics, but also astrophysics, nuclear physics, and beyond. This whitepaper discusses the scientific importance of CEν\nuNS, highlighting how present experiments such as COHERENT are informing theory, and also how future experiments will provide a wealth of information across the aforementioned fields of physics
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