One- and two-photon resonant spectroscopy of hydrogen and anti-hydrogen atoms in external electric fields

The resonant spectra of hydrogen and anti-hydrogen atoms in the presence of an external electric field are compared theoretically. It is shown that nonresonant corrections to the transition frequency contain terms linear in the electric field. The existence of these terms does not violate space and time parity and leads to a difference in the resonant spectroscopic measurements for hydrogen and anti-hydrogen atoms in an external electric field. The one-photon 1s-2p and the two-photon 1s-2s resonances are investigated

DEVELOPMENT OF A BLOW-PLATED MINIGES OF AUGER TYPE FOR SUPPLY OF RESPONSIBLE CONSUMERS OF THE “BELYU KAMEN” HEALTH CENTER

The work considered the possibility of building a mini-hydro dam on the river Pyshma to supply electricity to the "Belyu Kamen" health center.В работе рассмотрена возможность строительства бесплотной мини ГЭС на р. Пышма для снабжения электроэнергией санатория «Белый Камень».Работа выполнена при технической поддержке администрации санатория «Белый Камень»

Experimental Study on Performance Enhancement of a Photovoltaic Module Incorporated with CPU Heat Pipe—A 5E Analysis

As is already known, solar photovoltaic (PV) technology is a widely accepted technology for power generation worldwide. However, it is scientifically proven that its power output decreases with an increase in the temperature of the PV module. Such an important issue is controlled by adopting a number of cooling mechanisms for the PV module. The present experimental study assesses the effect of a fanless CPU heat pipe on the performance of a PV module. The experiment was conducted in June in real weather conditions in Yekaterinburg, Russian Federation. The comparative analysis of two PV panels (i.e., cooled, and uncooled) based on the electrical energy, exergy performance, economic, embodied energy and energy payback (5E) for the two systems is presented and discussed. The key results from the study are that the average temperature reduction from the cooling process is 6.72 °C. The average power for the cooled panel is 11.39 W against 9.73 W for the uncooled PV panel; this represents an increase of 1.66 W for the cooled module. Moreover, the average improvements in the electrical efficiency, and embodied energy recorded for a cooled PV panel 2.98%, and 438.52 kWh, respectively. Furthermore, the calculations of the levelized cost of energy (LCE) for the cooled PV panel indicate that it can range from 0.277–0.964 USD/kWh, while that for the uncooled PV panel also ranges from 0.205–0.698 USD/kWh based on the number of days of operation of the plant. © 2022 by the authors.Y848041; National Natural Science Foundation of China, NSFC: 41761144079, 42150410393; Chinese Academy of Sciences, CAS: 2021PC0002, XDA20060303; Ministry of Education and Science of the Russian Federation, Minobrnauka: FEUZ-2022-0031; K. C. Wong Education Foundation: GJTD-2020-14This research was funded by the Strategic Priority Research Program of the Chinese Academy of Sciences, the Pan-Third Pole Environment Study for a Green Silk Road (Grant No. XDA20060303), the Research Fund for International Scientists of the National Natural Science Foundation of China (Grant No. 42150410393), the International Cooperation Project of the National Natural Science Foundation of China (Grant No. 41761144079), the CAS PIFI Fellowship (Grant No. 2021PC0002), the K.C. Wong Education Foundation (Grant No. GJTD-2020-14), and the Xinjiang Tianchi Hundred Talents Program (Grant No. Y848041).The research funding from the Ministry of Science and Higher Education of the Russian Federation (Ural Federal University Program of Development within the Priority-2030 Program) is gratefully acknowledged: Grant number: FEUZ-2022-0031

Monitoring of the operating parameters of the KATRIN Windowless Gaseous Tritium Source

The KArlsruhe TRItium Neutrino (KATRIN) experiment will measure the absolute mass scale of neutrinos with a sensitivity of mnu = 200 meV/c2 by high-precision spectroscopy close to the tritium beta-decay endpoint at 18.6 keV. Its Windowless Gaseous Tritium Source (WGTS) is a beta-decay source of high intensity (1011 s−1) and stability, where high-purity molecular tritium at 30 K is circulated in a closed loop with a yearly throughput of 10 kg. To limit systematic effects the column density of the source has to be stabilized at the 10−3 level. This requires extensive sensor instrumentation and dedicated control and monitoring systems for parameters such as the beam tube temperature, injection pressure, gas composition and so on. In this paper, we give an overview of these systems including a dedicated laser-Raman system as well as several beta-decay activity monitors. We also report on the results of the WGTS demonstrator and other large-scale test experiments giving proof-of-principle that all parameters relevant to the systematics can be controlled and monitored on the 10−3 level or better. As a result of these works, the WGTS systematics can be controlled within stringent margins, enabling the KATRIN experiment to explore the neutrino mass scale with the design sensitivity

Морфологические аспекты кровоизлияний в опухоли гипофиза

Morphological features of pituitary adenomas, into which stroma haemorrhages take place, have been established by authors of the article. Tinctorial, macro- and microscopic characteristics have been researched. By an immunohistochemical research a level of expression of VEGF, EGFR, cyclin D1, protein p53 had been determine, that allowed to suppose an immediate reason and pathogenesis of haemorrhages into pituitary adenomas.Авторами статьи установлены морфологические особенности аденом гипофиза, в строму которых происходят кровоизлияния. Исследованы тинкториальные свойства, макро- и микроскопические характеристики. С помощью иммуногистохимического исследования определён уровень экспрессии VEGF, EGFR, циклина D1, белка p53, что позволило предположить непосредственную причину и патогенез питуитарных кровоизлияний