bluuebunny/crossref_metadata_2025 huggingface dataset:
Proposal of Brazilian National Program for Quality Control in the small animal PET scanners
Authors: Gontijo Rodrigo Modesto Gadelha
Published: December 2022

In Brazil, currently there are six preclinical molecular imaging centers and seven different small animal PET systems in use. However, there is still no national specific legislation for research laboratories focused on preclinical molecular images, unlike clinical nuclear medicine centers. A standardization of quality control protocols is needed to harmonize the use of small animal PET scanners in the research field. Thus, the aim of this work was to propose a National Program for Quality Control (NPQC) for the preclinical PET imaging systems in Brazil. This work was based on the quality control tests performed in Molecular Image Laboratory LIM/CDTN based on NEMA NU 4-2008 as described and presented in doctoral thesis of GONTIJO, 2019. The proposal of the NQCP was based on the CNEN NN 3.05 Publication (2013) and includes fundamental tests to be adopted, if possible, in laboratory practice to corroborate the experimental data. The Quality Control Program implemented in LIM/CDTN is an innovative and unprecedented proposal in the scope of preclinical molecular imaging services in Brazil. Therefore, the LIM/CDTN Program was carried out as a pilot to evidence the applicability and viability of the NQCP using small animal PET scanners. Summarizing, this work presents a viable set of Quality Control tests and their periodicities like a proposal for standardization to harmonize the use of this imaging technology in the field of research. Therefore, a National Quality Control Program (NQCP) applied to small animal PET scanners.
Characterization of the collimated output fluence , in a thermal neutron field, in terms of ambient equivalent dose H*(10,0)
Authors: Paizante Santos da Silva Larissa , Silva Fernandes Simone , Wagner de Souza Walsan , De Souza Patrão Karla Cristina
Published: December 2022

The Brazilian Neutron Laboratory at the Institute of Radioprotection and Dosimetry (IRD) developed and built a new standard facility for thermal neutron flux, seeking to provide a new homogeneous fluence to calibrate neutron detectors and personal dosimeters. The purpose of this work is therefore to characterize the collimated output fluence, in a thermal neutron field, in terms of ambient equivalent dose H*(10,0) for calibration and irradiation of personal monitors and neutron survey meters.  The neutron fluence in the system irradiation field needs to be well known for personal monitors and neutron survey meters calibrated used in nuclear reactors in addition to studies and development of new materials for neutron dosimetry. The characterization of neutron thermal energy fields at the usual calibration points is one of the recommendations of the International Organization for Standardization ISO 8529, 2001 for international intercomparison of neutron fluence measurements. The determination of the ambient equivalent dose of the new facility was estimated based on a secondary transfer standard internationally known as Long Counter and properly characterized and traced back to the Neutron Laboratory primary standards.
Levels of thorium, uranium and potassium in Brazilian geological sediment determined by gamma-ray spec-troscopy and instrumental neutron activation analysis
Authors: Baria Rogerio , Watanabe S , Munita C S , Silva P C S , Tatumi Sonia
Published: December 2022

The Brazilian coast of the terrace contains a wealth of evidence that can be used to explain the evolution of the coastline over the past 120k years. These studies include marine sediment geochronology based on dosimetry dating methods, in particular thermoluminescence. To determine the age of the terrace using luminescence dosimetry methods, it is necessary to decide on the exact mass fractions of 238U, 232Th, and 40K. These mass fraction values are used to calculate the annual dose rate of ionized radiation. In this context, in the present work, we studied eight marine sediment samples collected in the city of São Vicente on the coast of São Paulo state, Brazil, and determined the mass fractions of elements 238U, 232Th, and 40K by instrumental neutron activation analysis (INAA) and γ-ray spectroscopy. Linear regression mathematical methods are used to evaluate analytical methods accuracy. The results show a good correlation with a R2 value of more than 0.71. Therefore, it is possible to calculate the resulting mass fraction, calculate the dose rates of these sediments, and contribute to their date.
Development of an additional filtration system by 3D printing for the implementation of new X-ray beam qualities used in diagnostic radiology.
Authors: Neres de Almeida Junior José , Rodrigues Junior Orlando , Albuquerque Potiens Maria da Penha
Published: December 2022

The Calibration Laboratory (LCI) of the Nuclear and Energy Research Institute (IPEN-/CNEN) offerscalibration services for radiation measurements instruments used in radiation protection, diagnostic radiologyand radiotherapy. LCI produces radiation qualities and irradiation conditions which are in accordance with thenational and international standard requirements. In order to establish the recommended radiation qualities fordiagnostic radiology, X-ray beams generated in laboratory are modified for the irradiation conditions found inequipment routinely used in healthcare services. In this work, a new additional filtration system was developedto be adapted to the existing filter system at LCI. The new filter support can be coupled to the PTW BenchControl installed at the LCI X-ray system. Using a FDM 3D printer, a support model and a set of drawers weredeveloped for the placement of additional filters. The models were also developed to fit each specific drawer ofeach filter to be used in the laboratory routine, coupled to the specific sensors that fit the spaces of the supportpart. Additionally, a microcontroller based on Arduino, micro switches, low- and high-levelprogramming, allow checking of drawer status and integration of information with the laboratory controlsystem. The system allows the recognition of the filter inserted in the drawer from sensors attached to thesupport. Tests were carried out to verify the usability of the system in the routine, adding Ag (silver) and Cu(copper) filters, for the characterization of attenuated radiation beams of interest in diagnostic radiology.
Study of aluminothermic slag leaching for uranium and thorium recovery
Authors: MOURA VANDERLEI VILAÇA , Santos Talita , Pereira Claubia
Published: December 2022

The need for energy by modern society is increasing. On the other hand, it is necessary to reduce costs and environmental impact. In this perspective, the recovery of uranium present in industrial waste from the processing of naturally occurring radioactive material (NORM) appears as a possible complement to the mining stage of the Nuclear Fuel Cycle. NORM's uranium recovery can reduce environmental liabilities and mineral processing costs (especially blasting, crushing, and grinding). The industrial residue of this study, a type of aluminothermic slag, comes from the metallurgical processing of columbite (niobium and tantalum mineral) and has a content, measured by X-ray fluorescence, of 1.78% of U3O8. This content is higher, for example than those found in Lagoa Real-BA (0.2% in rock) and Santa Quitéria-CE (0.1% in rock). Another material that will be studied is ThO2, which is also present in the slag with a content, measured by X-ray fluorescence, around 3.66%. The process parameters analyzed were pH of the solution, time, granulometry and percentage of solids. The metallurgical recovery of U3O8 reached a maximum value of 71,3% with pH = 1, time of 8 hours, 65 % percentage of solids, and 200 µm of granulometry. The metallurgical recovery of ThO2 reached a maximum value of 69,7% with pH = 1, time of 8 hours, 65 % percentage of solids, and 200 µm of granulometry.
Evaluation of recovery yields of 60Co and 137Cs in extraction procedures
Authors: Assis de Souza Almeida Matheus , Menezes Ayllon Rafaella , Angeline Matheus , Vicente Roberto , Cardoso da Silva Paulo Sergio
Published: December 2022

A tecnologia nuclear vem sendo implantada em diversos setores da sociedade, dentre eles é possível destacar: medicina, indústria, pesquisa, entre outros. A alta demanda dessas aplicações nucleares tem causado problemas no que diz respeito à geração de resíduos radioativos. O método de ablação a laser vem se destacando nos últimos anos para a descontaminação de superfícies e a contaminação removida fica totalmente retida em filtros de papel. Isso requer um método seguro e barato para realizar a caracterização do inventário radioisotópico presente nas amostras do filtro laser. Neste estudo, a extração e quantificação dos radionuclídeos presentes no filtro foi avaliada usando 60 Co e 137padrões Cs. Duas formas de extração foram testadas: com equipamento soxhlet e cozinhando as amostras do filtro em 3M HNO 3 , o rendimento químico foi obtido após a contagem gama antes e após a extração. Observou-se que o método de extração por cozimento do filtro em solução ácida teve a maior recuperação de rendimento.
Alternative Methodology for Occupational Dose Estimation in Cardiac Electrophysiology Procedures
Authors: Yuamoto Mariana , Lykawka Rochelle , Borba Iana Quintanilha de , Anés Maurício , Sulzbach Carlos Eduardo , Leindecker Luíza , Machado Maurício , Bacelar Alexandre
Published: December 2022

Fluoroscopy-guided cardiac electrophysiology procedures are among the most critical x-ray exposures. However, occupational doses are still little-known. In this study, an alternative methodology was developed to estimate the occupational dose and evaluated its optimization in cardiac electro-physiology procedures. The procedures were reproduced by simulation and the dose rates of the staff were measured at chest and eyes height through electronic dosimeters. The dose rate for different modes of operation and FOV were evaluated. The occupational dose was estimated through the product of the dose rate in the staff's position in the room, the median time of exposure and the mean of these procedures performed by the HCPA in 2019. As a result, it was observed that the decreasing order of the estimated occupational dose was Physician A - Physician R - Nursing Staff and Radiographer - Physician B and Supplier, with the following values in mSv/year of 6.16 - 3.98 - 2.54 - 2.17, respectively. A 37.04% reduction in the occupational dose was observed with the change in FOV, up to 59.26% with different modes of acquisition and 31.82% distancing 50 cm from the most exposed position. The dose of staff is significant. However, due to the optimization of protocols already implemented in HCPA, the estimated doses are in accordance with the recommended dose limits. As optimization actions verified in this study, it is suggested the proper selection of FOV, the adoption of acquisition modes with dose reduction and the distance from the x-ray source.
Comparison of 18F-FDG and 68-PSMA-11 in PET for prostate cancer diagnosis
Authors: Fulle Natalia , Sabundjian Gaianê
Published: December 2022

Prostate cancer is the second most incident neoplasm in men, except for non-melanoma skin cancer, and has the second highest mortality rate in Brazil. Early diagnosis increases the chances of cure and enables a less aggressive treatment for the patient. Nuclear Medicine presents effective alternatives for prostate cancer diagnosis, such as Positron Emission Tomography (PET) or PET and Computed Tomography (PET/CT) imaging.  The aim of this study is to compare the advantages and disadvantages of the radiopharmaceuticals 18F-FDG and 68Ga-PSMA-11 used for PET or PET/CT in the diagnosis of this type of cancer. Compared to 18F-FDG, 68Ga-PSMA-11 has some advantages such as its availability by means of generators, the independent production of a cyclotron facility and its theranostic potential. The disadvantages compared to 18F-FDG are the scalability of 18F-FDG production compared to limited generator production.  Despite its favorable characteristics, the radiopharmaceutical 18F-FDG has limitations in the diagnosis of some types of tumors, such as prostate cancer. All the favorable and unfavorable aspects of these two radiopharmaceuticals are presented in this work.
Gamma Radiation Processing for Disinfection of a 19th Century Photo Album
Authors: Nagai Maria Luiza , Santos Paulo , Parron Isabela , Lee Francis , Vasquez Pablo
Published: December 2022

A 19th century photo album was donated to the Hercule Florence Institute collection. After going through thequarantine, it was discovered that the album was contaminated by anobides. The album was sent fordisinfestation treatment by ionizing radiation processing at IPEN. The dose applied was 3 kGy for the immediateeradication of the insects. Colorimetry analysis performed before and after irradiation found that treatment withionizing radiation did not affect human color perception in the album and the photographs present.
Dose estimation in abdominal CT scans using CT-Exposoftware
Authors: Souza Daiane Cristini Barbosa , Vicente Roberto , Vasconcellos de Sá Lídia , Honorio Silva Edilaine , Linhares de Oliveira Marcus Vinicius , Viera Cidral Maria Eduarda , Ribeiro Faria Camila , Flávia Camilo Naythyara
Published: December 2022

The application of ionizing radiation in diagnostic medicine has increased worldwide in the last decades. Computed Tomography (CT) is the main radiological procedure that contributes to the increase of the collective dose in the population. The aim of this study was to estimate the doses received by patients undergoing CT scans in a public hospital in Santa Catarina - Brazil, employing data from the DICOM header and utilizing the CT-Expo V. 2.7 software. The data were selected from 45 abdominal CT scans, performed consisted of two series: pre-contrast and one post-contrast intravenous, of adult patients performed in December 2020 in a public hospital located in Santa Catarina - Brazil. The spreadsheets with the data extracted from the DICOM headers were provided by the Santa Catarina Telemedicine System (STT). The effective dose and organ doses were calculated by CTDIvol and DLP values using the software. Overall, the organs that showed the higher equivalent doses were kidneys (19.5 mSv), spleen (18.5 mSv), stomach (18.9 mSv), and liver (18.1 mSv). The estimated effective doses were 7.31 and 8.41 mSv, for non-contrast and contrast-enhanced examinations. The use of software such as CT-Expo can support the estimation of effective doses received by patients through the information extracted from the DICOM header. The presented methodology can be a useful tool to retrospectively estimate the doses in CT services in Brazil.
Dosimetry in CR mammography using radiochromic film
Authors: Bustos Flores Mabel , Prata Mourão Arnaldo , Queiroz Pelegrineli Samuel , Passos dos Reis Junior Juraci
Published: December 2022

To estimate the dose that a patient's mammary tissue receives during mammographic screening, radiochromic film and objects simulators made of PMMA are used. This material interacts with X-rays in a similar way to tissue. Estimating the dose absorbed by a tissue is important to verify that the dose is within the recommended limits and in this way minimize the undesirable effects that radiation can cause and optimize the radiation dose that patients receive. This work aims to estimate the dose deposited in the breast tissue that a patient can receive during a mammographic screening, when a mammography device with a CR detection system is used. PMMA plates were used as simulator object and radiochromic film to measure the dose from its calibration curve. The dosimetric test was performed on the upper, lower surface and between the plates of the object.
Purification and characterization of platelet aggregation inhibitor from the venom of Bitis arietans
Authors:   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Platonov O. , Nikulina V. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Kucheryavyi Y. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Gryshchuk V. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Stohniy Y. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Chernyshenko V. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Slominskyi O. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Rebriev A. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Savchenko K. ,   ESC “Institute of Biology and Medicine”, Taras Shevchenko National University of Kyiv, Ukraine, Garmanchuk L. ,   ESC “Institute of Biology and Medicine”, Taras Shevchenko National University of Kyiv, Ukraine
Published: December 2022

Disintegrins are the antagonists of integrin receptors that can be found mostly in snakes’ venom. They can inhibit platelet aggregation, thus preventing the formation of blood clots. By blocking the integrin receptors of cancer cells, disintegrins can inhibit proliferation and metastasis. Thus, the search for new sources of disintegrins and development of methods of their purification is an important task of modern biotechnolo­gy. This work was dedicated to the purification and characterization of inhibiting polypeptides from Bitis arietans­ venom. Crude venom of B. arietans was fractionated using ion-exchange chromatography on Q Sepharose followed by size-exclusion chromatography on Superdex 75 using FPLC method. Analysis of molecular weight of protein components was performed using SDS-PAGE and MALDI-TOF analysis on Voyager-DE. Aggregation of platelet-rich plasma (PRP) in the presence of platelet aggregation inhibitor was investigated using aggregometry on the AR2110. MTT test was used for measuring HeLa cells proliferation and survival in vitro. Two-step chromatography allowed us to obtain fraction that contained polypeptides possessing the dose-dependent inhibitory action on adenosine diphosphate (ADP)-induced platelet aggregation in PRP. SDS-PAGE showed that obtained fraction contained two polypeptides with molecular weight 9.0 and 13.67 kDa according­ to MALDI-TOF analysis. Purified polypeptides inhibited ADP-induced platelet aggregation with IC50 0.09 mg/ml. However, 0.005 mg/ml of fraction suppressed viability of HeLa cells according to MTT test on 20%. Discovered biological effects of fractions allowed us to conclude the possible use of these polypeptides as anti-aggregatory or anti-proliferative agents. Keywords: antithrombotic action, disintegrins, glycoprotein IIb/IIIa, platelets, snake venom
http://ukrbiochemjournal.org/2022/12/changes-in-the-activity-of-phosphatases-calcium-and-phosphorus-in-rats-with-the-different-courses-of-gingivitis-under-correction-by-anti-inflammatory-gel.html
Authors:   I. Horbachevsky Ternopil National Medical University, Ukraine, Danchyshyn M. V. , Lototska O. V. ,   I. Horbachevsky Ternopil National Medical University, Ukraine;
Published: December 2022

Nitrate pollution of groundwater has been increasing in recent years. The aim of this work was to study the morphological features of the bone marrow of rats at the consumption of drinking water with varying nitrate content. The experiment was performed on 2 groups of white female rats of different ages (mature and immature) with 30 individuals each. Both groups were divided into 5 subgroups that differed in the quality of drinking water consumed by rats on their own. In the 30 days study, nitrate was given to rats in drinking water in doses of 50, 150, 250, 500 mg of sodium nitrate per liter. Animals of the control group drank water from the city water supply. The effect of nitrates on the bone marrow of rats was evaluated by morphological analysis. It was found that the consumption of drinking water with nitrates affected erythropoiesis and leukopoiesis, as evidenced by the growth of blasts, lymphocytes, pronormocytes and normocytes, megakaryocytes and eosinophils, displacement of erythrocyte sprout cells. An increase in the neutrophil maturation index indicates delayed neutrophil maturation, increased yield of mature cells from the bone marrow and depletion of the granulocyte lineage. The more pronounced changes were observed in the qualitative and quantitative composition of the components of the erythrocyte sprout. These disorders were dose-dependent with increasing hematotoxic effect of nitrates at doses of 250 and 500 mg/l in the group of immature animals and resulted in changes in the bone marrow, which may further cause the development of pathological processes in an organism. Keywords: bone marrow of rats, drinking water, nitrates, Van Gieson’s stain
Ubiquitin and its role in proteolisis: the 2004 Nobel prize in chemistry
Authors:   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Matyshevska O. P. , Grigorieva M. V. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Danilova V. M. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv, Komisarenko S. V. ,   Palladin Institute of Biochemistry, National Academy of Sciences of Ukraine, Kyiv
Published: December 2022

In the early 1980-s, Aaron Ciechanover, Avram Hershko, and Irwin Rose discovered one of the most important cyclic cellular processes – a regulated ATP-dependent protein degradation, for which they were awarded the 2004 Nobel Prize in Chemistry. These scientists proved the existence of a non-lysosomal proteolysis pathway and completely changed the perception of intracellular protein degradation mechanisms. They demonstrated pre-labelling of a doomed protein in a cell with a biochemical marker called ubiquitin. Polyubiquitylation of a protein as a signal for its proteolysis was a new mechanism discovered as a result of collaborative efforts of three scientists on isolation of enzymes involved in this sequential process, clarification of the biochemical stages, and substantiating the energy dependence mechanism. The article contains biographical data of the Nobel laureates, the methods applied, and the history of the research resulted in the discovery of the phenomenon of proteasomal degradation of ubiquitin-mediated proteins. Keywords: PROTAC, regulated protein degradation, ubiquitin, І. Rose, А. Ciechanover, А. Hershko
On the Analytical Solving of the Ter-Martirosian–Skornyakov Equation for Three Particles at Negative Energies
Authors: Kharchenko V.F.
Published: December 2022

Simple analytical expression for the solution of the Ter-Martirosian–Skornyakov equation forthree particles at a negative energy has been obtained.
Dependences of the Interatomic Quasielastic Force Coefficient and the Root-Mean-Square Amplitude of Thermal Vibrations of Atoms on the Configuration of Valence Electrons
Authors: Khidirov I. , Rakhmanov S.Dzh. , Parpiev A.S. , Makhmudov Sh.A.
Published: December 2022

The interatomic quasielastic force coefficient f and the root-mean-square amplitude of thermal vibrations √︀u2 of atoms in s-, d-, and p-elements located in various groups of Mendeleev’s Periodic Table are calculated. It is found that, with an increase in the atomic number of elements in the groups, the quasielastic force coefficient f and the amplitudes √︀u2 of thermal vibrations of atoms in the s-, d-, and p-elements change according to different patterns depending on the atomic number of the element in a group. The discovered regularities can be explained by the configurational model of the electronic structure of matter.
Generalized Uncertainty Principle and Delta-Function Potential
Authors: Paramanik S. , Nag A. , Sahoo S.
Published: December 2022

In recent studies, the Heisenberg uncertainty principle has been modified into the generalized uncertainty principle (GUP) to explain gravity from a quantum mechanical perspective. Here, we study the GUP corrections to the bound-state energy eigenvalues for a delta-function potential well and a double delta-function potential well using nonrelativistic quantum mechanical tools. Transmission probabilities for scattering states have also been derived and compared with the unmodified cases for both systems.
Effects of Nonlinearities in Physics and Demography
Authors: Weiland J. , Rafiq T.
Published: December 2022

Nonlinearities appear in almost all systems. Earlier, we focused on those in plasmas, ionospheric scattering, and the world population. As turned out, the estimate of the population growth made in 1974 is in astonishing agreement with the United Nations estimates and agrees with our present data to within 2%. A particularly important role, both for the population evolution and wave interaction in plasmas, is played by non-Markovian effects (effects depending on the past time). For the population growth, this occurs due to a delay of one generation in the set of population limiting actions, while, for plasmas, it is caused by nonlinear frequency shifts.
Метод колективних змінних в теорії нелінійних флуктуацій з урахуванням кінетичних процесів
Authors: Yukhnovskii I.R. , Tokarchuk M.V. , Hlushak P.A.
Published: December 2022

Для узгодженого опису кiнетики та гiдродинамiки систем взаємодiючих частинок оптимiзовано набiр параметрiв скороченого опису згiдно з Боголюбовим, що передбачає залучення колективних змiнних. При цьому роздiляються внески вiд короткосяжних i далекосяжних взаємодiй мiж частинками. Короткосяжнi взаємодiї (наприклад, модель твердих сфер) описуються в координатно iмпульсному просторi, а далекосяжнi – у просторi колективних змiнних. Короткосяжна складова розглядається як базисна. Використовуючи метод нерiвноважного статистичного оператора Зубарєва, ми отримали систему рiвнянь переносу для нерiвноважної одночастинкової функцiї розподiлу, нерiвноважного середнього значення густини енергiї взаємодiї частинок та нерiвноважної функцiї розподiлу колективних змiнних. Застосований метод колективних змiнних дав можливiсть розрахувати у вищих наближеннях, нiж гаусове, як структурну функцiю, так i гiдродинамiчнi швидкостi колективних змiнних.
Модель випаровування крапель ідеальних бі¬нарних спиртових розчинів у дифузійному та перехідному режимах
Authors: Bulavin L.A. , Verbinska G.M. , Brytan A.V. , Stepowyi Ya.O.
Published: December 2022

Створення моделей процесу випаровування крапель розчинiв, зокрема розчинiв спиртiв, у загальному випадку є складною задачею, для дослiдження якої потрiбно розв’язати систему рiвнянь масо- та теплопереносу. Альтернативним пiдходом може бути пiдхiд, який полягає у створеннi спрощеної моделi та подальшому врахуваннi тих фiзичних механiзмiв, якi є суттєвими для конкретних умов, в яких вiдбувається випаровування. В статтi за використанням даного пiдходу на основi теорiї випаровування Максвелла–Фукса запропоновано модель опису процесу випаровування iдеальних бiнарних розчинiв у дифузiйному та перехiдному режимах випаровування. З метою перевiрки даної моделi було проведено експериментальнi дослiдження випаровування краплин бiнарних спиртових розчинiв пропанол–октанол та бутанол–октанол в атмосферi сухого азоту за температури газу 293 К в дифузiйному та перехiдному режимах для значень початкових концентрацiй октанолу 0,25, 0,5 та 0,75 мольних часток. Запропонована модель була використана для розрахунку залежностей площi поверхнi краплини вiд часу для даних бiнарних спиртових розчинiв. Проведено порiвняння одержаних модельних кривих з експериментальними даними. Показано, що, в межах справедливостi наближень моделi, вона може бути використана для опису процесу випаровування як в дифузiйному, так I в перехiдному режимах випаровування.
Взаємодія валіну з молекулами води: дослідження методами DFT та раманівської спектроскопії
Authors: Jumabaev A. , Holikulov U. , Hushvaktov H. , Absanov A. , Bulavin L.
Published: December 2022

Взаємодiю неiонiзованої та цвiтерiонної форм валiну з молекулами води дослiджено методами раманiвської спектроскопiї та квантово хiмiчного моделювання. Формалiзм iнтегрального рiвняння для моделi поляризацiйного континууму (IEF-PCM) для врахування впливу розчинника використовувався на рiвнi теорiї B3LYP/6-311++G(d,p). Водневi зв’язки мiж молекулами валiну та води вивчалися методами квантової теорiї атомiв у молекулах (AIM) i нековалентної взаємодiї (NCI). Шляхом порiвняння експериментальних I теоретичних раманiвських спектрiв валiну у водному середовищi встановлено, що найбiльш iмовiрним є комплекс цвiтерiонного валiну з 4 молекулами води.
З’ясування умов збудження поверхневих поляритонів у кераміці Mg0,2Zn0,8O методом порушеного повного внутрішнього відбивання
Authors: Melnichuk O. , Korsunska N. , Melnichuk L. , Khomenkova L. , Venger Ye.
Published: December 2022

Уперше для керамiки Mg0,2Zn0,8O теоретично з’ясовано умови збудження поверхневих поляритонiв та побудовано поверхню порушеного повного внутрiшнього вiдбивання I(ν)/I0(ν), яка являє собою тривимiрне подання коефiцiєнта пропускання в IЧ-дiапазонi спектра. Визначено його залежнiсть вiд частоти i кута падiння випромiнювання. Для одержання оптичних i електрофiзичних параметрiв керамiки, необхiдних для розрахункiв, вимiрянi спектри зовнiшнього IЧ-вiдбивання. З них одержано вiдповiднi параметри методом дисперсiйного аналiзу. Продемонстровано можливiсть дослiджень резонансної взаємодiї оптичних фононiв та плазмонiв. Отриманi результати добре узгоджуються з вiдомими в лiтературi даними.
Поверхнева дифузія і фазові переходи в адсорбованих плівках міді на грані (112) вольфраму
Authors: Loburets A.T. , Zayika S.O.
Published: December 2022

Вперше у широкому температурному дiапазонi виконано експериментальне дослiдження парорiдинної рiвноваги у двовимiрнiй (2D) адсорбованiй плiвцi Сu на гранi (112)W. Визначено критичнi характеристики. Встановлено область спiвiснування фаз. Показано, що особливостi фазового переходу “рiдина–газ” у 2D Cu–(112)W є аналогiчними переходам у тривимiрних (3D) системах Rb i Cs. Обговорено причини термодинамiчної подiбностi 2D i 3D металiчних систем. Запропоновано аналiтичнi вирази для апроксимацiї експериментальних даних. Вони визначають межi iснування парорiдинної рiвноваги та дозволяють з високою точнiстю здiйснювати екстраполяцiю в областi критичної та потрiйної точок. Координати точок на рiдиннiй i газовiй вiтках бiнодалей було визначено на основi аналiзу дифузiйно сформованих концентрацiйних профiлiв.
Techniki modelowania 3D
Authors:   Dr, Uniwersytet Technologiczno-Humanistyczny w Radomiu, Wydział Transportu, Elektrotechniki i Informatyki, Katedra Informatyki, Polska, Molga Agnieszka , Krawczyk Patryk ,   Inż., Radom
Published: December 2022

The paper presents selected techniques of three-dimensional modelling. The problem of 3D modelling with the use of various modelling techniques was presented, the most important features of a given technique were distinguished.
BBC micro:bit jako narzędzie nowoczesnej edukacji technicznej
Authors:   Dr inż., Państwowa Wyższa Szkoła Wschodnioeuropejska w Przemyślu, Polska, Szabłowski Stanisław
Published: December 2022

Micro:bit is a board designed for learning electronics and programming for children and teenagers. The study included a hardware analysis of the system and programming environments. The possibilities of using the Micro:bit board in STEAM education were indicated in the study. The conclusion includes comments and practical inferences.
Młodzież a wirtualna osobowość naszych czasów – nowy wymiar „stawania się” czy destrukcja tożsamości? Refleksja na kanwie wybranych źródeł
Authors:   Prof. zw. dr hab., Uniwersytet Śląski, Wydział Pedagogiki i Psychologii, Instytut Pedagogiki, Zakład Teorii Wychowania, Katowice, Polska, Wysocka Ewa
Published: December 2022

The article presents the main problems related to the formation of the identity/personality of young people. The author puts forward a thesis about the close connection between on-line and off-line personalities, while pointing out that the new media constitute an autonomous source of threat to the development of the young generation. She indicates that this is due to both: the dark side of the virtual personality and its domination in the proces of becoming a person. She recalls several studies (E. Aboujaoude, M. Spitzer, G. Small, G. Vorgan) confirming thesis about the different significance (positive or negative) of the Internet/new media for the personality development. In the final conclusion, she points to the need to reflectively control their influence on the development of young people’s personality.
Principal component and regression analysis of the natural resource curse doctrine in the Azerbaijani economy
Authors: Niftiyev Ibrahim
Published: December 2022

The Azerbaijani economy has long been discussed in academic literature with reference to the theories of the natural resource curse (NRC) and Dutch disease. This is due to Azerbaijan’s heavy dependence on the oil and gas industry for its economic growth and development since 1995. While revenues from mineral resources helped overcome extreme poverty and increased GDP and GDP per capita, macroeconomic stability was shaken by the sharp decline in commodity prices in 2014 and 2015. This reality prompted scholars to look into the significance of NRC and Dutch disease in Azerbaijan. This paper therefore aims to contribute to the literature by analyzing NRC using principal component and regression techniques (dynamic and ordinary least squares) in a way that has not been studied before. The results of this study show that the oil industry had a negative impact on institutional quality in Azerbaijan between 1996 and 2019, which may translate into further negative impacts. For this reason, the human capital channel of NRC was tested for possible negative impacts of NRC and several negative associations were found. These results indicate that policymakers need to take the NRC doctrine more seriously. Although the first oil boom (2005–2014) is over, the Azerbaijani economy is facing a second oil boom starting in 2020, and the lowered quality of institutions could significantly reduce the benefits of mineral revenues if left unmanaged.
Türkiye’de sektörel seragazı salımının ekonomik büyümeye etkisi
Authors: Öztürk Ali Cem , Yavuz Tiftikçigil Burcu
Published: December 2022

Bu çalışma Türkiye’deki sektörel toplam seragazı salımı ile ekonomik büyüme arasındaki ilişkiyi araştırmaktadır. Çalışma ile 1990-2020 yılları arasındaki enerji, endüstriyel işlemler ve ürün kullanımı, tarım ve atık üretimine ait sektörel toplam seragazı emisyonlarının, Türkiye’nin ekonomik büyümesi ile olan ilişkileri incelenmiştir. Her bir sektöre ait seragazı salımının uzun ve kısa dönemde ekonomik büyüme ile olan ilişkilerini gözlemlemek için ARDL modelinden faydalanılmıştır. Bununla birlikte ekonomik büyümeye etki eden nedensel faktörlerin değerlendirilmesinde ise Granger nedensellik testi kullanılmıştır. Uzun dönemde tarım sektörü seragazı salımının, kısa dönemde ve nedensellik testinde ise atık sektöründen kaynaklı seragazı salımının ekonomik büyüme ile olan bağımlılığı tespit edilmiştir. Ekonomik büyümeyi seragazı salımı ile olan bağımlı yapısından çıkarmak için tarım ve atık sektörüne yönelik politikaların önceliklendirilmesi gerekmektedir. Türkiye’de ekonomik büyümenin seragazı salımı bağımlılığı ile ilgili literatürde pek çok çalışma yer almaktadır. Bu çalışma ile ilgili bağımlılığın sektörel yapısı ekonometrik analiz yöntemi ile incelenmiştir. Çalışma, sektörel belirleyicilikte literatüre katkı sağlayacaktır.
Kargo lojistik yönetiminde sistem dinamiği modeli
Authors: Eren Şenaras Arzu
Published: December 2022

Kargomatlar, pratik kullanımları ve müşterilere sağladığı kolaylık sayesinde son zamanlarda oldukça popülerdir. Bu çalışmanın amacı, kargo lojistiğinde son günlerde sıklıkla kullanılan kargomat için sistem dinamiği modelinin geliştirilmesidir. Sistem Dinamiği MIT’den Jay Wright Forrester tarafından geliştirilmiştir. Birçok farklı disiplin için kullanım alanı olmasının yanında, sistem dinamiği stok yönetimi konusunda sıklıkla kullanılan bir yöntemdir. Sistem Dinamiği stok ve akış temeline dayanmaktadır. Bu çalışmada, kargomat stoğunun planlanması için sistem dinamiği (SD) modeli Vensim PLE iLe oluşturulmuştur. Geliştirilen sistem dinamiği modeli ile farklı senaryoların analizini gerçekleştirmek mümkündür. Kargomatın kapasitesinin yeterliliği geliştirilen sistem dinamiği modeli yardımıyla incelenmiştir. SD model sayesinde kargomat stoğunun planlaması yapılabilmektedir.
Asymmetric behavior of oil price shocks and output performance in Africa
Authors: Rotimi Mathew Ekundayo , Ngalawa Harold , Kutu Augustine Adebayo
Published: December 2022

A comprehensive cross-country dataset is employed in this reseach to examine the impact of oil price shocks and its asymmetry on output in African oil exporting countries (AOECs). Using a panel-VAR model, the study accounted for impulse-response between output and oil price shocks. In addition, through the PVAR model, variance decom-position is performed to assess the importance of those effects and guidelines are offered for policy formation. The study revaled that oil price shocks create heterogeneously asymmetric effect on output. The study revealed the prevalence of Dutch Disease among the AOECs as apparent in the impact of negative oil price shocks on exchange rates and output. The study recommends that policies should be formulated to minimize the effect of oil price shocks on output, especially negative oil price shocks revealed to adversely affect oil revenue (policies aimed at strengthening economic activities through diversification, so as to enhance the export mix). This will reduce the AOECs’ on-going reliance on large revenues from oil, arising from positive oil price shocks which the literature has argued to have a negative and hindering impact on economy, mainly because it impacts the non-oil sector.
INSECTS ARE A SOLUTION TO THE PROBLEM OF PROTEIN SUPPLY OF MIXED FODDER’S
Authors: Makarynska А , Vorona N , Bedlinska Ye
Published: December 2022

In the materials of this article, the problems of protein deficiency in the production of compound feed are considered, and ways to solve them due to the use of alternative, non-traditional protein components - insects that have high nutritional properties, provide rapid accumulation of biomass, serve as sources of biologically active substances and are safe from from the point of view of issues of veterinary medicine and ecology. It is predicted that up to 15% of additional protein will be provided by insects in 2050, and their market will be estimated at $1.2 billion. The characteristics of the black lion fly (Hermetia illucens) and its larvae, peculiarities of cultivation and chemical composition are presented. Larvae mostly consist of protein and fat, and also contain 7.0% chitin, 5.0% calcium, 1.5% phosphorus and iron. The amino acid composition of the protein demonstrates the presence of a wide range of amino acids and a relatively high content of lysine, which makes it possible to use them in the development of new components of complete feed for farm animals and poultry. A method of introducing dry larvae of the black lion fly into the compound feed through granulated and extruded mixtures with a mass fraction of larvae from 10 to 50% has been developed. The structural scheme of the introduction of larvae in the production of compound feed is presented, which includes cleaning of grain raw materials, grinding, sieving, mixing the passing fraction of the sieve with dry larvae in a certain ratio, and subsequent granulation and extrusion of the mixture. The results of the study of the physical properties of the samples of the molded mixtures are given, and it is established that the sample with 15% dry larvae has the best physical properties. With an increase in the content of dry larvae in the mixture by more than 25%, the samples at the exit were characterized by significant fragility and fatness and required an additional drying operation, which would significantly increase the cost of the finished compound feed. Calculated recipes of complete ration compound feed for adult laying hens using larvae from 15 to 20%, which made it possible to exclude expensive feeds of animal origin (fish meal, meat and bone meal) and partially replace soybean meal (up to 12%), which significantly reduced the cost of finished compound feed.
Currency Effects of Tax Policy Application
Authors:   Kuban State University, Ishkhanov Alexander , Linkevich Elena ,   Kuban State University
Published: December 2022

The article examines the Russian experience in the field of currency regulation and the instruments that affect the exchange rate of the Russian ruble in crisis conditions. It is justified that the dynamics of the Russian ruble exchange rate depends primarily on the influence of four factors: the state of the economy of the issuing country, state monetary and financial policies, price dynamics of international commodity markets, and instability of the global monetary and financial system. It was established that the Russian ruble exchange rate also depends on the volume of foreign currency purchases by the population; a tendency for an increase in demand for foreign currency on the part of the population during the expectations of the Russian Federation (RF) national currency devaluation with a decrease in world oil prices was revealed. Based on an analysis of the currency policy of the Russian Federation, the authors come to the conclusion that curbing the weakening of the Russian ruble in the face of a decrease in the supply of foreign currency in the domestic market is carried out mainly through foreign exchange interventions and offer additional measures aimed at reducing demand on foreign currency through the introduction of tax instruments. Such measures will reduce the dependence of the ruble exchange rate on the volume of foreign currency inflows into the country, which will increase the efficiency of the Russian monetary policy and, as a consequence, the stability of the Russian economy to external adverse factors. In addition, six additional effects were revealed from the implementation of the proposed tax measures, which will strengthen the financial system of Russia. The proposed tax instruments can be applied in other countries, and the resulting increased demand for precious metals affects the global financial system up to its substantial transformation.
Impact of Artificial Intelligence on Creative Industries: Trends and Prospects
Authors:   Volgograd State University, Shkalenko Anna , Fadeeva Ekaterina ,   Volgograd State University
Published: December 2022

This study is based on the elements of the innovative methodology of post-institutional analysis including interdisciplinary synthesis, the core of which is the evolutionary-genetic concept of production factors and the model of the “development core” of economic systems, which involves overcoming the mono-aspect, dichotomy and dogmatism of many concepts of orthodox neo-institutionalism. The main idea of this study is to apply an interdisciplinary approach to study the impact of artificial intelligence on creative industries. The assessment of the current problems under study and the conceptual framework of the study was carried out on the basis of studying and rethinking the results of numerous works by European and Russian scientists, as well as the legislation of the Russian Federation. As a result of the study, it was found that AI and its technologies are now used and can be used in applications related to the creative industries. An overview of the current state of AI and its technologies was provided, as well as examples of applications for creative industries. The main categories of industries in which end-to-end AI technology is involved are highlighted: content creation, analysis of information, content enhancement and post-production workflows, information extraction and enhancement, and data compression. This study considers two main categories that characterize the economic activity of economic entities in detail: content creation and information analysis. The role of using AI for creative industries is determined, which can improve the process of using responsible innovation for sustainable business development in the period of digital transformation of society. Problems are identified and a forecast is made for the future potential of AI associated with the creative industries.
Regional Competitiveness: A Critical Theoretical Review and Implications for Empirical Analysis in Vietnam
Authors:   Volgograd State University, Phan Huy , Buyanova Marina ,   Volgograd State University, Kryukova Ekaterina ,   Astrakhan State University
Published: December 2022

Today, academic research shows that there have been major changes in the concept of competitiveness at the national and regional level. On the one hand, the concept has turned from a purely foreign trade orientation into a broader view of meeting the growing needs of people and businesses, prosperity and sustainable development. On the other hand, while competitiveness before the push was based solely on the level of production costs, today, based on a strategic view of increasing productivity, specialization, quality and innovation are taken into account. Like their national counterparts, regional and local politicians have become concerned about knowing the relative competitiveness of their local economy compared to other economies. Various organizations took part in the assessment of regional competitiveness, offering their own criteria and indicators to measure the competitiveness of any region. However, the fragmented and fragmentary nature of this work in Vietnam has led to the lack of substantial theoretical justification for the various methods of analysis and measurement used. The purpose of the article, firstly, is to give an overview of the theory and development of the concept of competitiveness. Secondly, to use the advantages of existing methods of assessing competitiveness to build a basis for analyzing Vietnam’s competitiveness, taking into account the spatial extent of the territory represented. The results of the analysis can be used in the development and implementation of policies to improve national and regional competitiveness.
Civil Peace of Palestinian Society between the Rule of Law and the Tribal Customary Law Analytical Study”
Authors: Shtayah Mohammad
Published: December 2022

Abstract Human rights are indivisible and are considered as the basis of enjoyment of civil, political, economic, social, and cultural rights. It also ensures safe environment to exercise these rights through sustaining civil peace under the rule of law. Therefore, the researcher utilised the historical and analytical descriptive approaches. The findings confirm: first, that civil peace is a fundamental pillar of sustainable development of societies. Second, civil peace in Palestine is at its worst and at risk. In addition to this, the consequences of the collapse of civil peace in Palestinian society will have serious repercussions on the Palestinian cause. The researcher then reached a number of recommendations to restore civil peace in Palestinian society, some of which are: First, to renounce the culture of violence that sowed hatred and revenge among younger generations. Next, to invite the Supreme Council of the Judiciary to develop judges' skills and legal expertise. Then, to call on judges to expedite the disposition of cases before them to ensure fairness of the justice system. Finally, to call on the Palestinian legislature to codify the relationship between tribal customary law and the rule of law. Keywords: Tribal customary law, civil peace, rule of law, relationship of the tribal customary law and civil peace.