bluuebunny/crossref_metadata_2025 huggingface dataset:
O Ensino Profissional Artístico de Música: uma Experiência sem Precedentes
Authors: (jacosta@ese.ipp.pt) Jorge Alexandre Costa , ) Rosa Maria Barros (rosabarros@ese.ipp.pt , (gmota@ese.ipp.pt) Graça Mota , (antonio.vasconcelos@ese.ips.pt) António Ângelo Vasconcelos
Published: May 2023

Com a publicação do Decreto-Lei n.º 26/89, foi criado o ensino profissional como uma experiência original, quer a nível de Portugal quer da Europa. Um acontecimento que emerge após a revolução de abril ter acontecido há relativamente pouco tempo e a memória de uma sociedade com acesso diferenciado à educação, seja esta genérica ou artística, estar ainda muito presente no sentir de todos. É neste contexto de inovação e democratização que surgem as primeiras escolas de ensino profissional de música no âmbito do ensino não superior. Passados trinta anos da criação destas escolas, os resultados apresentados por este sistema de ensino revelam que algo de novo e diferente aconteceu no panorama da educação em música em Portugal. A presente comunicação, que emerge no âmbito de um projeto de investigação em curso sobre esta mesma temática, tem como propósito fundamental proporcionar uma reflexão sobre i) a história do ensino profissional e do ensino profissional de música, ii) as principais características dos modelos organizacional, pedagógico e sociocultural que estas escolas profissionais adotam e, finalmente, iii) sobre alguns dados estatísticos recolhidos a partir da plataforma da Direção-Geral de Estatísticas da Educação e Ciência no período de 2013/14 a 2020/21 em Portugal continental.
Rheological effects of air drilling fluids on cuttings transportation in underbalanced drilling
Authors: Hudaifa A. Kassim  , Elhassan M. Abdallah  , Faleh H.M. Almahdawi  , Yasir M. F. Mukhtar
Published: May 2023

This research investigates factors influencing cuttings transport efficiency in air drilling operations, aiming to understand the underlying mechanisms, identify critical factors, and optimize drilling parameters for enhanced performance. The methodology includes a literature review, computational fluid dynamics (CFD) simulations, and sensitivity analysis of air velocity, drilling fluid properties, cuttings size, and outlet pressure. CFD simulations were employed to model the multi-phase flow in the annulus during air drilling, examining the effects of varying air velocities, cuttings sizes, and outlet pressures on cuttings transport and hole cleaning efficiency. Results show that increased air velocity improves cuttings transport and hole cleaning but may cause higher pressure drops and borehole erosion. Air drilling fluids' unique rheological properties significantly impact cuttings transportation, requiring careful consideration of factors like air velocity, aerodynamic lift, hole cleaning efficiency, annular pressure losses, and potential cuttings accumulation. The study reveals that cuttings size is crucial for transport efficiency, with larger cuttings necessitating higher air velocities for effective transport and being more prone to settling and accumulation. Moreover, the research demonstrates that increasing outlet pressure typically enhances cuttings transport efficiency in horizontal wells. In conclusion, this study offers valuable insights into factors affecting cuttings transport efficiency in air drilling operations, providing recommendations for optimizing drilling parameters to balance efficient cuttings removal, hole cleaning, and minimal pressure drop. The findings hold practical implications for air drilling operations' design and execution, with the potential to improve drilling performance and reduce operational risks.
When the history of the disease is the key to diagnosis: About a challenging case of congenital adrenal hyperplasia
Authors: Sara Chtioui  , Sana Rafi  , Ghizlane El Mghari  , Nawal El Ansari
Published: May 2023

Background: A 17 alpha-hydroxylase deficiency (17OHD) is a rare form of congenital adrenal hyperplasia (CAH). Congenital adrenal hyperplasia (CAH) is a group of disorders resulting from defect of one of enzymes necessary for biosynthesis of cortisol. Case: A 33-year-old female suffered from 17OHD. She presented with primary amenorrhea, lack of secondary sexual characteristics, and hypertension complicated by ruptured cerebral aneurysm. Laboratory tests showed hypokalemia, low levels of androgens (testosterone and dehydroepiandrosterone), corticosteroid, and high levels of adrenocorticotropic hormone and progesterone. The clinical manifestations, imaging and laboratory results appeared to be consistent with a diagnosis of CAH in the patient, due to the observed 17α‑hydroxylase deficiency. Conclusion: 17OHD is a rare disease associated with primary amenorrhea and hypertension. This case shows the importance of vital signs measurement, medical history and commitment to a systematic approach.
Screening of ten wild fruits extracts from Cameroon’s flora for their anti-inflammatory and antioxidant potential
Authors: Brice Edie Enang II  , Sylvain Nsangou Pechangou  , Frederic Nico Njayou  , Marie Louise Medoua  , Paul Fewou Moundipa
Published: May 2023

Background: Wild edible fruits are good source of phenolic compounds such as anthocyanins. Those compounds are known for their anti-inflammatory potential. They interact with many mediators of the physiopathological pathway such as NF-kB which is at a central position in the inflammatory response in macrophages. This study aimed to determine the anti-inflammatory and antioxidant potential of ten wild edible fruits aqueous extracts. Methods: The antioxidant potential was evaluate through the DPPH, ABTS and OH radical scavenging activity; the ferric reducing agent power and the total antioxidant capacity assessment. Also, the total phenolic and flavonoids, anthocyanins compounds and vitamin C content were assayed. For the anti-inflammatory activity, a primary macrophage culture was used. Inflammatory mediators such as nitric oxide (NO), alkaline phosphatase, NADPH oxidase and 5-lipoxigenase activity was assayed. Results: Alchornea cordifolia and Pentaclethra macrophylla extracts showed the greatest antioxidant activity respectively (Antiradical power (AP)=5.82 mol of DPPH/mg of extract and AP=5.05 mol of DPPH/mg of extract for DPPH scavenging assay); (IC50=1.62µg/ml and IC50=1.60µg/ml for ABTS radical scavenging assay); (IC50=32.67µg/ml and IC50=70.01µg/ml for OH radical scavenging assay) and (EC50=54.06µg/ml and EC50=17.46µg/ml for ferric reducing antioxidant power) with a non-significant difference with the reference compound. For the anti-inflammatory activity, firstly it has been observed that Alchornea cordifolia’s extract exhibits the greatest potential against NADPH oxidase activity inhibition (IC50=36.20µg/ml); alkaline phosphatase activation (EC50=0.27µg/ml) with non-significant difference with the reference compound. Secondly, Pentaclethra macrophylla’s extract demonstrated a high ability to inhibit NO production (IC50=5.79µg/ml) and 5-lipoxigenase (IC50=1.41µg/ml). Conclusion: From the results obtained the assessed wild fruit extracts appears to be good sources for anti-inflammatory and antioxidant bioactive molecules. They could be beneficial for the research of new modulators for the management of inflammatory disorders.
Quality of sleep, fatigue and adherence to antiepileptic medications among patients with epilepsy
Authors: Jothipriya  , Jasmin Anand  , Alice Suresh  , Vivek Mathew  , Mahasampath Gowri
Published: May 2023

Epilepsy is the second most common neurological disorder which affects 70 million individuals worldwide. The study assesses the quality of sleep, fatigue and adherence to antiepileptic medications among patients with epilepsy (PWE). A quantitative descriptive correlation study design was adopted. The investigator used simple random sampling technique to select 100 patients with epilepsy, who fulfilled the inclusion criteria. Quality of sleep was assessed using “Pittsburgh Sleep Quality Index”, fatigue with “Modified Fatigue Impact Scale” and adherence of antiepileptic medications with “Adherence in Chronic Disease Scale” by Self reporting technique. The study revealed that the quality of sleep was poor in 64% of the subjects, while the remaining, 36% had good quality of sleep. Majorities (83%) of the epileptic patients were found to have no fatigue, 12% had mild fatigue and the remaining 5% had moderate fatigue. Majority (81%) of the subjects were adherent to antiepileptic medications, 18% were moderately adherent and only 1% of them were non-adherent. The study depicts a negative correlation r= -0.099 (p= 0.338) between fatigue and adherence to antiepileptic medications which is not significant (p> 0.01) and shows no correlation (r =0 .0295) (p = 0.771) between the quality of sleep and adherence to antiepileptic medications. The study highlights a positive correlation (r= 0.2831(p= 0.004) between fatigue and the quality of sleep, which is significant (p < 09820.01). The study concludes that attention related to sleep in patients with epilepsy has important implication for diagnosis, seizure control and a better quality of life.
Impact of the COVID-19 pandemic on lung cancer diagnosis in the region of Marrakech-Safi, Morocco
Authors: Imane SAIDI  , Chaynez RACHID  , Houssam BIBORCHI  , Oussama FIKRI  , Adil MANSOURI  , Mohamed AMINE  , Lamyae AMRO
Published: May 2023

Background: The dreadful consequences of the COVID-19 pandemic put an unprecedented pressure on health-care services in Morocco. Lung cancer (LC) patients represent a vulnerable population highly affected by the pandemic. Studies on lung cancer diagnosis during an epidemic are lacking. We analyzed the impact of COVID-19 on lung cancer diagnosis in the region of Marrakech-Safi where lung cancer incidence continues to rise. Materials and Methods: We compared the clinical features of newly diagnosed lung cancer cases in the Mohammed VI University Hospital Center between March and December 2020 with lung cancer cases diagnosed during the same period in the past 3 years and the year after. Results: A total of 352 patients were diagnosed with lung cancer from March through December, 2017–2021. During the pandemic, the number of lung cancer hospitalization dropped by 36% from the previous years, moreover the number of bronchoscopies and other biopsies performed decreased significantly in 2020 (p < 0.000).Lung cancer patients in Group2 had a significant longer pre-hospital delay with a mean of 7, 02±2,06 months and higher performance status score 3-4 (64,6%) compared to the other Groups 1,3 (p < 0.000).In the second and third groups more lung cancer patients seems to be exposed to second-hand smoke comparing to the first group with (27,4%) in 2017-2019 vs (52,1%) and (69,2%) in 2020 and 2021 respectively(p < 0.000). However no differences concerning tumor staging has been described between the 3 groups with most patients being classified as stage IVA-IVB through all the years (2017-2019: 73,9% vs. 2020: 85,4% vs 2021: 80,8%, p=0,151). Conclusion: The COVID-19 pandemic was responsible of a significant decrease in newly diagnosed LC cases with less bronchoscopies and biopsies being performed. No significant difference has been noted regarding tumor staging but LC patients seemed to have higher performance status score in 2020.
Use of autologous tendon of Hamstring in the treatment of irreparable lesions of peroneus tendon. Case report and literature review
Authors: Rosemberg Dov Lagus , Macedo Rodrigo Sousa , Sposeto Rafael Barban , Godoy-Santos Alexandre Leme , Fernades Tulio Diniz
Published: May 2023

The treatment of severe lesions of peroneus longus and brevis tendons is a challenge for orthopedists, and little is described in theliterature about the epidemiology. Most of the articles focus on single lesion of one of the tendons, rarely describing what to do whenboth are severely ill. This case report will show and discuss a surgical technique for when both tendons are injured. Level of Evidence III; Case Report and Literature Review.
Descrição de técnica percutânea para o tratamento cirúrgico das rupturas agudas do tendão de Aquiles
Authors: Pereira Vinícius Alvarenga , Oliveira Junior Otaviano de , Bertolini Fabrício Melo , Silveira Gustavo Heringer Cezar Fortes , Pádua Bruno Janotti , Marcatti Mateus Martins
Published: May 2023

A ruptura aguda do tendão de Aquiles é uma  lesão  frequente dos membros inferiores e existe controvérsia em relação ao tratamento ideal. Diversos métodos estão descritos na literatura,  dentre eles, tratamento conservador, reparo aberto e cirurgia minimamente invasiva. O reparo aberto está associado a maior índice de complicações  no sítio cirúrgico enquanto as técnicas minimamente invasivas apresentam risco aumentado de lesão iatrogênica do nervo sural. Alguns dispositivos foram desenvolvidos para  reduzir as complicações das primeiras técnicas percutâneas descritas. Apresentamos  uma técnica  para reparo das lesões agudas do tendão de Aquiles de maneira percutânea utilizando materiais simples disponíveis na maioria dos centros cirúrgicos, sem necessidade de instrumental especial. Associado a essa técnica, adotamos protocolo de reabilitação  funcional precoce, que já provou ser vantajoso na recuperação das funções do paciente.
Tibiotalocalcaneal arthrodesis with femoral head allograft, external fixator provisional compression, and locking plate fixation after failed total ankle arthroplasty
Authors: Rosemberg Dov , Fonseca Fabio Correia Paiva , Pires Eduardo Araujo , Sposeto Rafael Barban , Macedo Rodrigo Sousa , Bitar Rogério Carneiro , Godoy-Santos Alexandre Leme
Published: May 2023

The number of total ankle arthroplasties has increased in recent years with the improvement of implants and advanced attempts to maintain ankle movement. However, this technique presents complications, such as aseptic loosening and infection, requiring revision surgery. In this scenario, conversion by tibiotalar or tibiotalocalcaneal arthrodesis is highly accepted and can be performed with external fixators, intramedullary rods, screws, or locking plates. This article shows the resolution of a case of aseptic loosening tibiotalocalcaneal arthrodesis fixed with a locking plate associated with bone allograft. Level of Evidence V; Therapeutic Studies; Expert Opinion.
Is there any weakness in sports performance in volleyball athletes regarding the correlation between foot posture index and lower limb functional hopping performance?
Authors: Kahraman Yeliz
Published: May 2023

Objective: The aim of the study was to investigate the relationship between 1RM calf raise, countermovement jump (CMJ), and functional hop performance with foot posture index (FPI). Methods: Twenty-six volleyball athletes were evaluated in this study. Foot posture index was evaluated with six-item criteria; talar head palpation, curves above and below the malleoli, calcaneus inversion/eversion, talonavicular congruence, medial longitudinal arch high, and forefoot abduction/adduction. Single hop, triple hop, crossover hop for distances, medial side triple hop, 90° medial rotation hop, single-leg vertical jump, 6m. timed hop, 1RM calf raise, and CMJ were measured in this study.Results: All measurements were tested on both right and left side. Significant differences were found in single hop (p = 0.016), triple hop (p = 0.005), medial side triple hop (p = 0.001), medial rotation hop (p = 0.020) in single leg vertical jump, and FPI for right and left sides (p < 0.001, p < 0.005). There were significant differences when comparing the limb symmetry indexes (LSI%) calculated from hop tests. When the correlations between FPI and hop tests were found significant, correlation and no significant correlations were found between left side and FPI. Conclusion: This study has shown that young female volleyball players may produce low hop performances due to the asymmetric structure relationship FPI scores. Level of Evidence IV; Therapeutics Studies; Cases Series.
How to fund clinical research in orthopedics and traumatology? Grants and opportunities
Authors: Martinez Luis Lopez , Candido Caio de Oliveira , Naresse Vinicius da Silva , Lolo Bruno Carraro , Santos Silvonete Lima dos , Godoy-Santos Alexandre Leme
Published: May 2023

Objective: The aim of the study was to identify: how to fund clinical research in orthopedics and traumatology? Methods: A survey of funding for clinical research was performed. Results: According to data from the PIVOT® platform, the funding is concentrated in the USA, UK, and Medical Societies. The main sponsor was the DOD (USA), followed by the SICOT (Belgium). According to data from the DIMENSIONS® platform, there was a reduction of projects financed. The main country was the USA, followed by Japan. Regarding the amounts, the largest funders were the USA and Belgium. FAPESP (Brazil) is in the 7th position among sponsors. According to data from the InCites® platform, the main countries were the USA, China, and Japan. Conclusion: The reduction of projects in the last two years may be related to the limitations imposed by the SARS-CoV-2 pandemic. Regarding the amounts, the largest funders were the USA and Belgium. This data confirms the importance of funding from the SICOT. The main sponsor was the DOD; this data may be related to injuries that occurred in the war. The fact that the NIDA (USA) is the third largest funder may be related to the increase in the consumption of opioids for pain management. The incidence of falls among the elderly may be associated with Japan being one of the countries most supporting this area. Brazil is in the 8th position, and CAPES, CNPq, and FAPESP are among the top 20 funders. Level of Evidence IV; Descriptive Observational Study.
Acute calcific periarthritis at the metatarsophalangeal joint - a case report
Authors: Kyriakos Bekas  , Konstantinos Giannikas
Published: May 2023

Acute calcific periarthritis (ACP) is an uncommon forefoot condition with a few cases reported in the literature. It is often misdiagnosed and may result in unnecessary diagnostic and therapeutic procedures due to its association with other systemic diseases with similar clinical presentation. A 70-year-old man presented in the emergency room with soft tissue swelling with local erythema and tenderness in the fifth metatarsophalangeal region of the right foot, which started two days prior with no history of injury. Passive and active movements of the joint were painful. Acute calcific periarthritis could be confused with other pathologies. A thorough clinical examination and the knowledge of its clinical presentation could prevent unnecessary diagnostic procedures. Level of Evidence V; Therapeutic Studies; Expert Opinion.
Osteoma Osteoide: Relato de caso e revisão da literatura
Authors: Chakkour Marcelo Marcucci , Lucena Igor Freitas de , Moré Luciene , Pereira Bergamasco Jordanna Maria , Marchi Neto Noé  De , Costa Marco Túlio
Published: May 2023

Osteoma osteóide (OO) é definido como um tumor ósseo osteoblástico, benigno, acometendo com maior frequência pacientes jovens do sexo masculino. Devido à sua raridade e sintomatologia inespecífica, o diagnóstico do OO no pé pode ser postergado e confundido com doenças levando à ausência do correto diagnóstico por anos.

Neste relato, apresentamos um caso de um paciente do sexo masculino de 22 anos com diagnóstico de osteoma osteóide no tálus que teve o seu diagnóstico atrasado por aproximadamente três anos, confundido e tratado como complicação após entorse de tornozelo. Realizamos também uma revisão da literatura sobre o osteoma osteóide no pé e tornozelo.
Prevalence of ankle accessory muscles: a cross-sectional study
Authors: Kobata Silvia Iovine , Manzo Joao Paulo Ferreira , Heluy Gustavo Damázio , Rodrigues Rogeria Nobre , Lopes Alexia Abuhid , Bernini Alesson Filipe , Pinto Lucas Ramos , Mezencio Cesar Maia
Published: May 2023

Objective: Determine the prevalence of accessory muscles around the ankle of patients with ankle pain using magnetic resonance imaging (MRI) and evaluate its correlation with other foot and ankle disorders. In addition, better understand the association with accessory muscle and types of pain, mechanical due to compression forces around ankle structures or neuropathic due to mass effect around the tarsal tunnel. Methods: The MRIs obtained from 2007 to 2017 were retrospectively studied and analyzed by a radiologist specializing in foot and ankle pathologies. A total of 9,600 scans were studied after ankle pain; 31 scans had at least one accessory muscle. Results: The prevalence of symptomatic accessory muscle was 0.32% (31 feet). It was found due to mechanical pain in 45.2% of cases. It was considered an incidental finding in 32.3%. Tarsal syndrome was the main clinical presentation in 19.4%, and 16% had other causes of mechanical disorders: 10% with peroneal tendinitis, 3% with Achilles tendinopathy, and 3% with plantar fasciitis. The prevalence of accessory muscles was 35% of the flexor digitorum, 32% of the peroneus quartus, 19% of the fibulocalcaneus internus, 13% of the accessory soleus, and 6% of the tibiocalcaneus internus. Conclusion: Although rare, accessory muscles can contribute to ankle pain with various presentations that confound clinical diagnosis or even appear as incidental on MRI and should be considered in the management of ankle pain. Level of Evidence III; Therapeutic Studies; Retrospective cohort study.
Novel surgical management of tibialis anterior tendinosis using an anchor augment
Authors: Naude Jaco , Saragas Nikiforos Pandelis , Ferrao Paulo Norberto Faria
Published: May 2023

Objective: The objective of this paper was to describe a surgical technique for the management of TA tendinosis: Debridement, repair, and augmentation with a suture anchor without tendon transfer. Methods: This is a retrospective case series including five patients managed surgically for TA tendinosis. If ≥ 30% of healthy tendon remains after debridement, the tendon is augmented with a suture anchor, with the suture incorporating the healthy tendon as acheckrein. Patient outcomes were assessed using the AOFAS midfoot, VAS Pain, and SEFAS score. Results: The mean AOFAS improved preoperatively from 37.0 (range 18–51) to 97.6 (range 95–100), the VAS pain score from 8.0 (range7–9) to 0.8 (range 0–1), and the mean SEFAS score at final follow-up was 43.8 (range 41–48). Conclusions: Tibialis anterior tendinosis is an uncommon degenerative process. Early diagnosis and appropriate management can prevent tendon rupture. This case series of debridement, repair, and augmentation with a suture anchor showed high patient satisfactionand good clinical outcomes without needing a tendon transfer. Level of Evidence III; Therapeutic Studies - Investigating the Results of Treatment; Retrospective Comparative Study
REGIONAL METAMORPHISM AND STRATIGRAPHY OF THE BASEMENT OF THE UKRAINIAN SHIELD
Authors: Kyrylyuk V.P. , Gaiovskyi O.V.
Published: May 2023

Stratigraphic complexes of the Lower Precambrian are everywhere metamorphosed. Therefore, the stratigraphic subdivision of the Lower Precambrian has always been inextricably linked with the study of metamorphism. For some time, the degree of metamorphism of the complexes was even used as an indication of their relative age. With the beginning of the use of isotopic dating, this sign was not confirmed, after which the degree of metamorphism was no longer taken into account in the stratigraphic dismemberment of the shields basement. The degree of metamorphism of the complexes was no longer taken into account for a long time when compiling official stratigraphic schemes of the Precambrian of the Ukrainian Shield, which, in the opinion of many geologists, led to distortions of the real stratigraphy of the basement of this region. 
The authors of the article believe that the degree of metamorphism can still be used in the development of the stratigraphy of the Ukrainian Shield and, above all, in the stratigraphic study of individual megablocks. The possibility of such use of metamorphism is considered in the cycle of publications. This is the second article in the cycle. The first article describes the stratigraphy and metamorphism of all megablocks of the Ukrainian Shield. A number of conclusions have been made about the regularities of the manifestation of metamorphism. It is shown that older stratigenic complexes in each of the megablocks are characterized by higher temperature metamorphism. This pattern provides a basis for establishing the relative stratigraphic sequence of complexes within individual megablocks based on the degree of their metamorphism. At the same time, the distinctive features of the composition and metamorphism of the stratigenic complexes, according to the authors, are a reflection of the successive stages of the geological development of the Ukrainian Shield in the Early Precambrian and can serve as the basis for compiling of the regional stratigraphic scheme on a historical and geological basis. In this second article of the cycle, modern approaches to the geochronological periodization of the Precambrian are considered: a) geochronometric, adopted for the International “The Geological Time Scale” and b) historical-geological, which is the basis of the “General Stratigraphic Scale of the Lower Precambrian of Russia”. The current “Correlation Chronostratigraphic Scheme of the Early Precambrian of the Ukrainian Shield” is based on the geochronometric approach, which the authors, like many other researchers, consider unacceptable for practical use. The article proposes a variant of the regional stratigraphic scheme of the Ukrainian Shield on a historicalgeological basis, compiled at the level of complexes, which in the final version of the scheme can be divided into series and suites.
NEW DATA ON PROMISING OIL AND GAS OBJECTS OF THE YAMNA SUITE OF THE PALEOCENE IN THE SOUTH-EASTERN PART OF THE SKІBA AND KROSNO COVERS OF THE UKRAINIAN CARPATHIANS
Authors: Shlapinskiy V.Ye. , Havryshkiv H.Ya. , Haіevska Yu.P.
Published: May 2023

Thick sandstones of the Yamna suite are widespread throughout the Skіba cover, as well as in the south-eastern part of the Krosno cover. The research area is bounded by the Limnytsia River in the northwest and the Ukrainian-Romanian border in the southeast. Several promising structures comprising the Yamna sandstones (Brusturanska, Yanovetska, and Voronenkivska) are identified in this area. Among them, according to the number of positive indicators of oil and gas potential, the Voronenkivska structure (Nadvirna district of Ivano-Frankivsk region, near the settlements of Voronenka, Yablunytsya, Polyanytsya) is the most promising, localized in the Zelemyanka slice. The structure is divided by faults into four tectonic blocks and stretches for 8 km. Under the Oligocene rocks, crumpled into the anticlinal fold of the north-western extension, Paleocene-Eocene deposits are inferred according to the geological models, which contain thick sand strata of the Vyhoda (Middle Eocene) and Yamna suites of the total thickness over 300 m. Oil manifestations are documented in the Oligocene deposits on the surface. Potentially promising horizons may be in the depths range 1500-1800 m. The article extends the previous work devoted to the assessment of the oil and gas prospects of the Yamna suite of the Paleocene of the north-western part of the Skуba cover of the Ukrainian Carpathians. 4.2 million tons of oil were recovered from the Yamna sandstones of the Paleocene, which are characterized by good reservoir properties, in the fields localized in the north-western part of the Skiba cover. The Yamna sandstones in this sector of the Carpathians are also common in the Krosno cover. The uneven distribution of industrial oil potential between these two parts of the Carpathians is explained by lithological changes or the influence of structural and geochemical factors. A study of stratigraphy and reservoir properties of the Yamna sandstones, common in the deposits of the Skіba and Krosno covers, suggests that they comprise satisfactory reservoirs for hydrocarbons. Promising areas and structures have been identified and described.
IVAN IVANOVYCH NIKITIN – A FAMOUS PALEONTOLOGIST OF UKRAINE (TO 100TH АNNIVERSARY FROM THE BIRTH)
Authors: Yakushyn L.M.
Published: May 2023

The article is devoted to Ivan Ivanovych Nikitin, the well-known Ukrainian scientist and researcher in the field of stratigraphy, paleontology, Candidate of Geological and Mineralogical Sciences, senior researcher of the Department of Stratigraphy and Paleontology of Mesozoic deposits of the Institute of Geological Sciences of the National Academy of Sciences of Ukraine.
Intelligent analysis of radar data based on fuzzy transforms
Authors: Solonskaya S. , Zhyrnov V.
Published: May 2023

It is proposed to use a fuzzy transform apparatus for the analysis of radar data in the form of coordinates of marks and their virtual images formed on the basis of useful and interfering signals, and which are considered as fuzzy samples and sets. It is shown how this approach can be used to identify the functional (semantic) dependencies between components of the radar data.
Conditional probability of hitting anti-aircraft missile system by anti-radar-guided missile
Authors: Kudriashov V.Ye. , Rozhkov M.I. , Tkachenko A.Yu. , Chervonyak Yu.P.
Published: May 2023

A variant of determining values of the conditional probability to defeat the air defense missile system (ADMS) by the anti-radar missile (ARM) with a passive radar homing head (PRHH) is offered. The detection ranges of the ARM by the ADMS radar are given for various conditions. Both the ARM to ADMS approach time and the ARM to ADMS homing errors standard deviations are given. The probabilities of passing of ARM in ’tube’ of given radius are determined and analyzed. The numerical simulation results of the conditional probability to defeat the ADMS are presented for various application conditions of the ADMS. This allows forming the directions of the ADMS survivability improvement against the PRHH ARM.
Experimental evaluation of effectiveness of distribuned acoustic radiator in the system of radio acoustic sounding of the atmosphere
Authors: Kartashov V.M. , Babkin S.I. , Tolstoy E.G.
Published: May 2023

An estimation of efficiency of the distributed acoustic radiator using in the RAS system , when measuring meteorological quantities, is carried out experimentally. A good coincidence of results of the wind speed measurement performed with the comparative means (RASS and mast anemorumbometer) for some averaging is shown, though the standard deviations of results of measurement carried out using the RAS system and the anemorumbometer are markedly different due to methodological and technical factors. In addition, the use of the distributed emitter in the RAS system gives a real possibility of simultaneous recording of air humidity in the investigated atmosphere layer and also improves the accuracy of recording temperature profiles by using the maximuma of the video pulses amplitude for calculations. The RAS system with the distributed acoustic radiator can be made in a mobile version for synchronous measurements of the main meteorological values: the speed and direction of the horizontal wind, temperature and humidity of air in the field.
Experimental studies of the characteristics of a lidar emitter based on a pump-dye laser
Authors: Zarudyi А.А.
Published: May 2023

The results of experimental studies of the flashlamp pumped organic dye laser with a dispersion resonator are presented. Intracavity interferometers were used for narrowing the spectrum and tuning the radiation frequency. The results of the studies indicate that there is an optimal value for the length of the active element, at which the maximum spectral brightness of the radiation is realized.
The power characteristics of a lidar transmitter constructed according to the generator-amplifier scheme
Authors: Zarudnyi А.А. , Tsopa А.I.
Published: May 2023

Technique for calculating the energy characteristics of the lidar transmitter constructed according to the generator-amplifier scheme on an organic dye with a lamp pumping is considered. The results of calculations show that there are optimal ratios of the lengths of the generator and amplifier, at which the effective energy of radiation is maximal.
Two-level method of hierarchical-coordination QoS routing based on resource reservation
Authors: Yeremenko O.S.
Published: May 2023

A method of hierarchical-coordination QoS routing based on network resource reservation is proposed. The proposed method is based on the introduction of a two-level hierarchy of solutions. The lower level was responsible for ensuring a consistent solution of problems of the distributed source routing and reserving the link resource with the provision of end-to-end QoS requirements for the packet rate and average packet delay. The main task of the upper level is overload preventing of communication links during the reservation of their bandwidth initialized in distributed manner by each of the border routers of the network. It is established that the method provides an iterative calculation of the required control variables; the number of such iterations depended on the network structure, the amount of available network resources, the number of flows and their QoS requirements.
On the possibility of creating a hybrid meteor-burst communication system
Authors: Antipov I.E. , Naidenova D.R. , Shkarlet A.I.
Published: May 2023

The possibility of using a meteor-burst communication for one-way transmission of short text messages is considered. The method for organizing a meteor-burst communication, which fully realizes its stealthiness and low power consumption, is proposed. According to the proposal, the meteoric radio channel is used to information transfer only from the base station to the peripheral one, and the sending of acknowledgments is via the Internet connection. The simulation results show that the proposed method can be used to transfer up to 1.5 Mbit per day.
Electroheliuminescent platform for solid phase determination of polycyclic aromatic hydrocarbons at ultra-trace level
Authors: Khaled G. , Kukoba A. , Bilash O. , Zoludov Yu. , Snizhko D. , Muzyka K.
Published: May 2023

An electrochemiluminescent (ECL) platform is proposed to determine the trace concentrations of polycyclic aromatic hydrocarbons (PAH) in water. Due to the PAH extraction from the aqueous solution, followed by transfer to Langmuir-Blodgett films, their immobilization on the electrode and the solid-state ECL detection has opened the possibility of determining the surfactant level at trace concentrations in the linear range 10-10 ÷ 10-13 mol.
Structure of high asymmetric p-n-junction taking into account the charge of movable carriers
Authors: Galat A.B. , Donchenko A.L.
Published: May 2023

A refined analytical model is proposed for calculating the structure of the spatial charge area of a semiconductor p-n junction with allowance for the spatial charge of movable carriers. The work was carried out in the context of refinement of the analytical estimation of p-n junction recombination current, and also in order to estimate the Schottky model applicability limits when calculating the recombination currents in the spatial charge area of a sharply asymmetric semiconductor p-n junction.
Numerical analysis of characteristics of wideband planar disk-slot antenna
Authors: Tsaliev T.A. , Siden S.V.
Published: May 2023

Electrodynamic descriptions of the co-planar construction of the linear polarization antenna are examined as a combination of a flat conducting screen with a circular opening and circular disk accommodated in the plane of this opening. The disk is connected to the power source by means of a coplanar line and is shifted so that the edges of the circular opening and the disk form a crack of a variable width.The results of numerical modeling of the characteristics of such an antenna in the presence of a dielectric substrate and without it are presented, discussed and compared. It is shown that such a fully co-planar (including power line) antenna design has improved frequency properties, both in agreement with the input and the directional coefficient.
Properties of resonance circuits of radio electronics
Authors: Lebedev P.F. , Milutchenko I.A.
Published: May 2023

The article gives new ideas on the transformation of resonance chains in the frequency domain using the structural law. The analogy of the equivalence of bipolar resistive structures with three elements and R, L, C chains is shown. The work is of interest in digital modeling.
Estimation of efficiency of counteraction to photographic reconnaissance and video recording by the method of infrared hiding
Authors: Kukush V.D. , Oleynikov A.N. , Dibrova N.А.
Published: May 2023

The photographic reconnaissance is the most widespread and effective method of getting information by the visual-optical channel. Reconnaissance facilities such as video- and photo cameras are accessible, multifunction devices which provide an opportunity to obtain information both in visible and infrared range of radiation. Active and passive methods are used for counteraction to the photographic reconnaissance. One of the active methods is the method of the infrared hiding. It is based on the deterioration of the contrast of the photographed object due to light interference into the lens. The article shows results of the experimental estimation of the infrared hiding method efficiency applied against typical set of the photographic reconnaissance facilities.
Information resources: analysis and classification
Authors: Myliutchenko I.O. , Onopko B.V.
Published: May 2023

The category of "information resource" in the field of information security is considered based on the research of the processes of formation, use and protection of information resources of different levels. A variant of classification of information resources, obtained as a result of analysis and generalization of classification characteristics from many sources, is proposed.
Mathematical structure of the Strumok stream cipher
Authors: Kuznetsov O.O. , Gorbenko I.D. , Gorbenko Y.I. , Alekseychuk A.M. , Tymchenko V.A.
Published: May 2023

The main development results of a new keystream generator, named “Strumok”, and offered as a candidate for the national symmetric encryption standard of Ukraine, are presented.  Strumok is built according to the SNOW2.0-like schema of the summation generator; increased secret key length and the initialization vector allow using reliably the stream cipher even taking into account quantum cryptographic analysis methods. The basic transformations and individual results from the cipher performance research are given, moreover, here it is shown the generator, capable of forming a keystream at speed exceeding 10 Gbit per sec.
Algorithms for evaluation of the SNOW 2.0-like stream ciphers security over residue rings against correlation attacks
Authors: Alekseychuk A.N. , Ignatenko S.M.
Published: May 2023

The class of stream ciphers obtained by replacing the SNOW 2.0 cipher in the generator scheme with a bitwise addition by an arithmetic addition modulo a power of 2 is investigated. Algorithms for evaluation of such ciphers security against correlation attacks, analogous to the known attacks on SNOW 2.0, are developed. It is shown that under certain conditions the above replacement results in a significant increasing the security of the cipher against known correlation attacks.
Investigation of shift registers with nonlinear feedbacks as combining and filtering functions
Authors: Poluyanenko N. , Potii O.
Published: May 2023

The cryptographic resistance of the stream cipher is determined, among other things, by the ability of the generated pseudo-random sequence (PRS) to resist analytic attacks. One of the main components of the PRS streaming cipher generation algorithm is Boolean functions combining and filtering. The possibility of using shift registers with nonlinear feedbacks of the second order is considered, a sequence of the maximum period as a combining or filtering function is formed. The main indicators of cryptographic stability of such functions are investigated, namely: balance, presence of inhibitions, correlation immunity and nonlinearity. Experimental indications of correlation immunity and nonlinearity for all М-РЗНЗЗ of the second order with a dimension of up to 9 cells inclusive are investigated and presented.
Analysis of the implementation complexity of the cryptosystem on the Suzuki group
Authors: Khalimov G.Z. , Kotukh Y.V. , Sergiychuk Yu.A. , Marukhnenko A.S.
Published: May 2023

Implementations for cryptosystems of finite groups based on logarithmic signature and covering are considered. A logarithmic signature is exemplified by a permutation group with the asymmetry of encryption and decryption algorithms. Description of the improved cryptosystem MST3 in Suzuki 2-group with the order of the group q2 is given. The Suzuki 2-group use has a significant advantage in implementation, due to the large center and simple group operation. Cost estimates for encryption, decryption and comparison with the RSA algorithm are obtained.
Principles of decentralized public key infrastructure building
Authors: Isirova K.V. , Potii O.V. , Semenets V.V.
Published: May 2023

The main principles of building the existing public key infrastructure are given. Problems related to the functioning of such system are described. New concept for public key infrastructure building based on blockchain technology is proposed. Such concept avoids the weaknesses and shortcomings of the hierarchical architecture.
Technologies of forming OFDM signals in modern information and communication systems
Authors: Zamula A.A.
Published: May 2023

Technologies of forming signals used in communication and telecommunications systems are considered, and the analysis of promising technologies that can be used in wireless broadband access communication systems is given. It is shown that a widely used OFDM modulation scheme has a number of shortcomings that can lead to a decrease in the system efficiency indicators. Alternative signal generation technologies are presented, in particular, signal-based signal processing based on window signal processing (W-OFDM), which eliminate the shortcomings of the OFDM technology.
Expedient allocation of costs for implementation of protection measures against technical reconnaissance means
Authors: Zabolotniy V.I. , Yermolovych A.V.
Published: May 2023

A mathematical model is developed and a solution of the problem of justification of the expediency of expenses for information protection at the enterprise is proposed, which provides the maximum income from the enterprise's activity. A model is developed that reflects the probability of creating a successful system of protection measures, with some overall costs of protection against technical reconnaissance and of information technical protection.
Features of video-pulse parameters simulation for studying spectra of secondary electromagnetic radiation
Authors: Zabolotny V.I. , Perepadia V.I.
Published: May 2023

Features of video-pulse parameters simulation for studying spectra of secondary electromagnetic radiation are described on the basis of the Monte-Carlo statistical test method. It is established that the key parameters in terms of the possibility of information leakage are: the length of the smooth transition of the signal between the linear parts and the length of the approximation of the linear component of the pulse front, which determine the shape of the signal. Using a probabilistic approach, a method for determining the density distribution of the probability of electric field intensity at the boundary of the controled zone is described to assess the technical protection of information.
Features of the EDELIVERY implementation in the context of electronic trust services. The experience of the Euro-Union
Authors: Brochevan E.V. , Potii A.V.
Published: May 2023

The components of Connecting Europe Facility and the eDelivery service are considered. The organizational and architectural features of the implementation of the registered documents delivery and its functions are analyzed. Describes The process of deploying the infrastructure for the service and its design is described. The experience of using the service in the EU countries is considered.
Realization of the mechanism of control software integrity in post quantum period
Authors: Potii O.V. , Karpenko А.S.
Published: May 2023

This article is devoted to description the realization of the public-key infrastructure using the stateless algorithm of digital signature with quantum-resistance. This article is detail describe the development cycle and implementation of the stateless signature scheme using the hash function of  DSTU 7564:2014.
Investigation into the structure of spectra of signals with linear frequency modulatio
Authors: Gorbenko I.D. , Zamula A.A.
Published: May 2023

Analytical expressions for the spectrum and the uncertainty function for composite non-uniform signals with FM pulse width (SNLFM-FM signals) are obtained. The technique and results of studies of the SNLFM - FM signals spectral, correlation and structural properties are presented in the manipulation of the phase by various classes of binary discrete sequences.
Phenomenological description of coherent radar images based on concepts of the measure on a set and stochastic integral
Authors: Volosyuk V.K. , Zhyla S.S. , Kolesnikov D.V.
Published: May 2023

The model of scattered electromagnetic fields in the region of their receiving for solving problems of the Earth remote sensing is proposed, using a phenomenological approach based on the laws of geometrical optics and the Huygens-Fresnel principle. The procedure for their processing, while restoring a coherent radar image of the earth's surface in the near Fresnel zone, is shown. The structure of the obtained image is described by the convolution integral of the complex scattering coefficient with the radar system ambiguity function. It is noted that, due to the complex internal structure of the scattering coefficient, it is reasonable to consider the field in the receiving region not only as Riemann integrals, but also Lebesgue and Stieltjes integrals, and Ito stochastic integrals.
Rational distribution of energy of probing radiation in the observation space of the hydrometeorological monitoring system
Authors: Perelygin B.V.
Published: May 2023

The results of investigations are presented, which made it possible to reveal the most rational way of distributing the energy of probing radiation in the observation space. This method consists in the fact that the radars forming the field are placed at the vertices of the connected regular hexagons so that the observation zones of adjacent radars are superimposed on each other up to the full range of the radar, while limiting the elevation of the antenna patterns by the elevation angle. In this case, the absence of the need for energy distribution at large elevation angles creates a significant saving in the energy of the probing radiation and brings the degree of completeness of utilization of the radiation energy to 70%.
Study of the possibility of increasing the accuracy of measuring the concentration of particles of explosives by remote sensing methods
Authors: Romanyuk V.A. , Starodubtsev S.O. , Shapovalov S.V.
Published: May 2023

Most of the existing methods for detection of explosives require sampling and sample preparation, whereas in the search for explosives, it is not always possible to contact the explosive device (ED). In this connection, the methods for remote detection of explosives by detecting their particles present in various quantities near or on the surface of the explosive are of particular interest. The difficulty of detecting such substances lies in the fact that, in addition to full-scale samples, they may be in the package. In addition, it often becomes necessary to detect a trace amount of hazardous substances on packages and contact surfaces. The purpose of the article is to study the possibility of improving the accuracy of lidar measurements of the concentration of particles of explosives, taking into account the width of the laser emission line and the absorption width of the molecule under study.