In our work, we tried to identify the structural features of fragments from cast iron cauldrons of the medieval Golden Horde, as a representative of the products from the ancient iron casting process. We have selected two groups of iron-cast fragments from the Selitrennoye settlement in the lower parts of the Volga River and the Bolgar settlement in the central Volga region. Both settlements...
The production of activated carbon (AC) from lignocellulosic biomass through chemical activation is gaining global attention due to its scalability, economic viability, and environmental ad-vantages. Chemical activation offers several benefits, including energy efficiency, reduced car-bonization time, and lower temperature requirements. In this study, potassium hydroxide (KOH) was employed for...
Among interactions of gamma ray with matter, Compton effect plays the leading role in the case when the energy of gamma ray exceeds a few hundred keV. At the same time, unless conventional gamma cameras that are used in CT scans, Compton cameras do not need collimators, that provides higher registration efficiency at several times. However, Compton cameras are not yet used for medical purposes...
Nowadays there is a huge demand of current sources for portable electronics. Sodium ion batteries seem to be a real alternative to Li-ion batteries. Therefore, energy materials for Na-ion current sources are now in need to be widely and carefully investigated. P2-layered oxide cathodes are cheap and have desirable Na-ion diffusion channels. Moreover, their structural stability is relatively...
We present an early-stage prototype of positron emission tomograph (PET) based on 3x3x20 mm GAGG(Ce) scintillators optically coupled to 3x3 mm SiPMs (Onsemi fc30035-smt). The detectors are read by a Weeroc 32-channel Petiroc2A chip, allowing for precise charge and time measurements and designed specifically for SiPMs readout.
In the report, the energy and time resolutions of the system...
Optical materials based on cesium lead halide perovskite nanocrystals are promising due to their unique optical, optoelectronic and photoelectric properties. The convenience of using perovskite nanocrystals in applications such as LEDs, solar cells, etc. lies in their ability to smoothly adjust the position of luminescence depending on the ratio of halogen ions, obtaining mixed nanocrystals....
Abstract: Zinc oxide (ZnO) has been widely studied over the last decade for its remarkable properties in optoelectronic and photovoltaic devices because of its high electron mobility and excitonic
properties. It has probably the broadest range of nanostructured forms that are also easy and cheap
to synthesize using a wide variety of methods. The volume of recent work on ZnO...
Industrial Detector of REactor Antineutrinos for Monitoring (iDREAM) is a prototype detector designed to demonstrate the feasibility of antineutrino detectors for remote reactor monitoring and safeguard purposes. The 1 ton Gd-doped liquid scintillator detector is mounted in the Kalinin nuclear power plant (Russia), 20 m from the 3 GWth VVER type commercial reactor. Antineutrinos are detected...
The growing demand for consumer electronics and electric vehicles has led to a substantial increase in the consumption of lithium-ion batteries (LIBs). The lack of economically viable and environmentally friendly recycling processes for LIBs could lead to an environmental crisis and resources shortage. Amongst other techniques, liquid-liquid extraction and solid-liquid extraction are the two...
