bluuebunny/crossref_metadata_2025 huggingface dataset:
Estudo arqueomalacológico do sambaqui sob rocha Casa de Pedra
Authors: Ferreira Jessica , Da Rocha Bandeira Dione , Corrêa Luz de Souza Rosa Cristina , Tureck Claudio Rodolfo , Lorenzi Luciano
Published: June 2023

O ser humano altera o ambiente em sua volta desde os registros mais antigos e seus impactos ao longo da sua evolução. Dos impactos visíveis na paisagem causados por sociedades pretéritas, destacam-se os sambaquis. Dentre as regiões brasileiras com grandes agrupamentos de sambaquis, destaca-se a Baía Babitonga, uma formação estuarina no sul do Brasil com alto potencial conservacionista e interesse arqueológico. Nesta região, há um único sambaqui situado sob gruta e devido sua singularidade, buscou-se caracterizar os moluscos do Holoceno Tardio e compreender os padrões de exploração deste recurso pelos povos pré-coloniais. A escavação arqueológica no sambaqui resultou em 27 espécies (17.695 indivíduos), onde foi possível inferir as áreas de captação dos moluscos e suas funções e utilidades para estes povos.
Arqueologia e Antropologia da agência
Authors: Diogo de Souza Camila , Kesser Barcellos Dias Carolina
Published: June 2023

A noção de agência tem sido usada com frequência na Arqueologia há mais de trinta anos. Durante este período, os significados e os usos do conceito de agência foram apropriados e transformados a partir dos paradigmas das diferentes linhas interpretativas arqueológicas. Contudo, muitas vezes, tais usos carecem de discussões teóricas e explicitações didáticas claras sobre as origens, princípios e modelos da noção de agência. Recentemente, o conceito de agência tem sido subsumido a uma revisão e debate teórico e metodológico cada vez mais intenso na área dos estudos da cultura material e tornou-se ponto central no processo de entendimento das sociedades do passado por meio do estudo relacional entre pessoas, materialidade e campos de ação. Este artigo visa apresentar e discutir o desenvolvimento da noção de agência, seus fundamentos e parâmetros aplicados aos estudos da cultura material. Iremos explorar teoricamente o conceito no campo da Antropologia visando entender como seus pressupostos alcançaram a Teoria Arqueológica e fornecer alguns instrumentos e recursos didáticos para a adoção e a aplicabilidade dos usos e significados da agência material.
Uma arqueologia do não-contato: povos indígenas isolados e a materialidade arqueológica das matas e plantas na Amazônia
Authors: Alves Daniel Rocha Cangussu , Furquim Laura Pereira , Perez Wlliam , Shiratori Karen Gomes , Machado Luíza , Bruno Ana Carla , Neves Eduardo Góes
Published: June 2023

A partir da institucionalização da política do não-contato pela FUNAI na década de 1980, há uma demanda pelo desenvolvimento de métodos de monitoramento dos povos indígenas isolados, buscando respeitar sua recusa ao contato. Neste cenário, se entrelaçam a arqueologia e o indigenismo. O monitoramento tem por base a análise dos vestígios deixados nas florestas: acampamentos abandonados, caminhos antigos ou recentes, áreas de manejo florestal, armadilhas de pesca e outras marcas gravadas nas árvores, que indicam a presença humana. Se a análise dos vestígios dos povos isolados se conforma como uma arqueologia do tempo presente, então a efetivação da política oficial do isolamento criou uma prática de “arqueologia do não-contato”. Este artigo busca sistematizar uma parte do conhecimento acumulado nas últimas décadas por indigenistas, e integrá-lo à prática arqueológica, a partir da análise de ecofatos que derivam do manejo e do uso de plantas, expressos principalmente em feições antrópicas na mata.
Corpos-urnas na arte e arqueologia da Foz do Amazonas: prerrogativas e percalços de uma pesquisa pretensamente pós-representacional
Authors: Polo Mario Junior Alves
Published: June 2023

A Foz do Rio Amazonas conta com sítios arqueológicos funerários povoados por diversos corpos em cerâmica. No presente artigo é apresentada a pesquisa desenvolvida sobre alguns tipos de corpos-urnas em contextos do sul do Amapá e ilhas de sua costa estuarina. A ideia é narrar os percalços de se desenhar e aplicar um método pós-representacional de análise, por meio do qual buscamos tecer contribuições sobre a arte indígena que floresceu na região até o contato com as frentes europeias. Debatemos, por meio dessa abordagem, sobre um regime artístico e de corporeidade no qual a mimeses e o figurativismo são possíveis aparatos na composição de seres diversos, e não valores ou recursos visuais por si só.
Ahorro voluntario para el retiro: su beneficio fiscal
Authors:   Universidad Veracruzana, Hernández Hernández Gabino , García García María del Carmen ,   Universidad Veracruzana, Eguía Casis Alicia ,   Universidad Veracruzana
Published: June 2023

In Mexico, the percentage of people who save voluntarily for their retirement fund is very low. The general objective of this paper is to highlight the importance and fiscal benefits of voluntary savings for retirement. Thus contributing to the achievement of the Sustainable Development Goals; specifically to the end of poverty, in this case, in adulthood, promoting sustained, inclusive and sustainable economic growth, full and productive employment and decent work; as well as the reduction of inequalities, progressively achieving greater equality of income and opportunities. This research work is based on a mixed approach, with a descriptive and documentary design. It highlights the importance of voluntary savings for retirement, and its fiscal benefit; however, it does not rule out the responsibility of the Government in reforms for a better functioning of the current pension system.
A Novel Heterojunction CuWO4/g-C3N4 Photocatalyst for Removal of Organic Pollutant under Visible Light Irradiation
Authors: Dang Do , Le Son Thanh , Nguyen Hai Huy
Published: June 2023

In this study, a series of CuWO4/g-C3N4 composites were synthesized using a facile construction method. The structural characteristics of the composites were examined using various techniques, including XRD, SEM, SEM-EDS, FT-IR, and UV–DRS. The photocatalytic performance of the CuWO4/g-C3N4 nanocomposites was evaluated in the degradation of methylene blue (MB) under visible light irradiation. The findings revealed that the CuWO4/g-C3N4 composite with a mass ratio of 10% CuWO4 displayed the highest efficiency (89%) in degrading MB during an 80-minute photodegradation process, which was consistent with the pseudo-first-order kinetics. These results clearly demonstrate that the formation of a Z-scheme CuWO4/g-C3N4 heterojunction significantly improves the photocatalytic efficiency by promoting rapid separation of electron-hole pairs and enhancing the redox capability. Additionally, the photodegradation efficiency remained above 85% even after four cycles, suggesting the stability of the catalyst.
Facile Construction of Silver Decorated on Carbon Nanotube in Natural Rubber and Polyethylene Blend for Antibacterial Activity
Authors: Thai Nguyen Thi , Thu Nguyen Thi Minh , Hoang Do Huy , Dang Do Van
Published: June 2023

The study described the preparation of composite material through the dispersion of carbon nanotubes (CNTs) decorated with silver nanoparticles (Ag NPs) in the matrix of blending natural rubber (NR) and polyethylene (PE), for use as an antibacterial agent. The FESEM results indicated the uniform and defect-free surface of the synthesized composites. The mechanical properties of synthesized composite improved with a 65% increase in tensile strength, a 38% increase in elongation, and a 40% increase in hardness compared to the original NR/PE blend materials. Although the addition of CNTs-Ag NPs did not considerably affect the thermal stability of the NR/PE blend, it was found to prevent E. coli bacterial growth by 35%. This opens up new possibilities for the use of the composite in a variety of applications, particularly in the field of public health and wellness.
Optimized Escape Path Planning for Commercial Aircraft Formations
Authors: Saber Safa , Feron Eric
Published: June 2023

There is growing interest in commercial aircraft formation flight as a means of reducing both airspace congestion and the carbon footprint of air transportation. Wake vortex surfing has been proven to have significant fuel-saving benefits; however, commercial air transportation has yet to take advantage of these formation benefits due to understandable safety concerns. The realization of these formations requires serious consideration of safety contingencies during closer-in maneuvering of large commercial aircraft. Formation contingency scenarios are much more complex than those of individual aircraft and have not yet been studied in depth. This paper investigates the utility of an optimization modeling approach in generating maneuvering and escape paths for commercial formation aircraft by comparing model-generated paths with pilot-generated escape plans. Three high-altitude commercial aircraft formation scenarios are presented: formation join, formation emergency exit, and formation escape. The model-generated paths are evaluated and compared with pilot-generated escape plans using the author’s pilot expertise. Model results compare well with pilot intuition and are useful in presenting solutions not previously considered, in evaluating separation requirements for improvement of escape path planning, and in confirming the viability of the pilot-generated plans. The novel optimization model formulation presented in this paper is the first model capable of generating exit and escape paths comparable to pilot-generated plans. It is also the first model to incorporate path avoidance of persistent and drifting wake turbulence.
Hypersonic Conical Shock-Wave/Turbulent-Boundary-Layer Interaction at High Reynolds Number
Authors: Zuo Feng-Yuan
Published: June 2023

A parametric study of hypersonic impinging conical-shock-wave/turbulent-boundary-layer interaction (CSBLI) is carried out at hypersonic high-Reynolds-number conditions (Mach number 6.0, [Formula: see text], based on the freestream momentum boundary-layer thickness and wall viscosity) by means of numerical simulation of the Reynolds-averaged Navier–Stokes (RANS) equations, with the eventual goal of establishing wall temperature effects. Comparison with available experimental data shows that RANS is capable of predicting the main features of hypersonic oblique shock-wave/turbulent-boundary-layer interaction, namely, typical size and distribution of the wall properties. A large number of flow cases, especially at high Reynolds number, were computed to examine the scaling of the heat transfer over a wide range of wall temperatures. As expected, the interaction zone of hypersonic CSBLI is reduced as the wall is cooled. A simple power of heat transfer originally introduced by Back and Cuffel (“Changes in Heat Transfer from Turbulent Boundary Layers Interacting with Shock Waves and Expansion Waves,” AIAA Journal, Vol. 8, No. 10, 1970, pp. 1871–1873) for planar shock-induced interactions is here considered to account for hypersonic CSBLIs, which is found to successfully collapse the data to the distributions obtained for supersonic/hypersonic, cold/hot interactions. The value range of the power exponent [Formula: see text] is within 0.75–0.95.
A Sexualities Turn Towards Urban Informality
Authors: Tucker Andrew
Published: June 2023

In this article, I set forth the case as to why scholarship on sexuality may wish to engage more directly with scholarship on urban informality especially as it relates to the urban South. Sexualities scholarship has long acknowledged an imbalance in the types of location researched, with the majority of studies having taken place in sites of relative privilege in the Global North. However, there has yet to be a sustained consideration as to the ways in which the particularities of the urban South – such as widespread urban informality – may offer important opportunities for sexualities scholars to engage more directly with locations beyond the Global North. In relation specifically to examples drawn from sub-Saharan Africa, in this article, I explore first the informal economic sector and examine the possibilities of considering the ways in which non-heteronormative sexualities may form a key but so far under-researched part of this sector. I then examine the ways in which scholarship can consider the particular strategic and pragmatic ways by which non-heteronormative groups and communities may be navigating informal built environments, not only to survive but also to potentially thrive.
Patient-Reported Outcome Measures for Adults and Adolescents With Patellofemoral Pain: A Systematic Review of Construct Validity, Reliability, Responsiveness, and Interpretability Using the COSMIN Methodology
Authors: Hoglund Lisa T. , Scalzitti David A. , Jayaseelan Dhinu J. , Bolgla Lori A. , Wainwright Susan Flannery
Published: June 2023

OBJECTIVE: We aimed to appraise the construct validity, reliability, responsiveness, and interpretability of patient-reported outcome measures (PROMs) used to assess function and pain in adults and adolescents with patellofemoral pain (PFP).

DESIGN: Systematic review of measurement properties

LITERATURE SEARCH: We searched the PubMed, CINAHL, Scopus, SPORTDiscus, and Cochrane Library databases from inception to January 6, 2022.

STUDY SELECTION CRITERIA: We included studies that assessed the measurement properties of English-language PROMs for PFP and their cultural adaptations and translations.

DATA SYNTHESIS: Using the COnsensus-based Standards for the selection of health Measurement INstruments (COSMIN) methodology, we determined overall ratings and quality of evidence for construct validity, internal consistency, reliability, measurement error, and responsiveness. We extracted data related to interpretability for clinical use.

RESULTS: After screening 7066 titles, 61 studies for 33 PROMs were included. Only 2 PROMs had evidence of “sufficient” or “indeterminate” quality for all measurement properties. The Knee injury and Osteoarthritis Outcome Score patellofemoral subscale (KOOS-PF) had “low” to “high” quality evidence for a rating of “sufficient” for 4 measurement properties. The Lower Extremity Functional Scale (LEFS) had very low–quality evidence for a “sufficient” rating for 4 measurement properties. The KOOS-PF and LEFS were rated “indeterminate” for structural validity and internal consistency. The KOOS-PF had the best interpretability with reported minimal important change and 0% ceiling and floor effects. No studies examined cross-cultural validity.

CONCLUSION: The KOOS-PF and LEFS had the strongest measurement properties among PROMs used for PFP. More research is needed, particularly regarding structural validity and interpretability of PROMs. J Orthop Sports Phys Ther 2023;53(8):460–479. Epub: 20 June 2023. doi:10.2519/jospt.2023.11730
Responder Analyses: A Methodological Mess
Authors: Cook Chad E. , Bejarano Geronimo , Reneker Jennifer , Vigotsky Andrew D. , Riddle Daniel L.
Published: June 2023

SYNOPSIS: Responder analyses are methods for analyzing randomized controlled trials, which purport to identify individuals or subgroups of study participants who experienced a “clinically meaningful” improvement from a treatment. Unfortunately, responder analyses have numerous methodological shortcomings, which preclude inferences concerning individual response to treatments and, thus, adoption into clinical practice. In this Viewpoint, we summarize 2 major limitations of responder analyses: (1) their thresholds of success involve arbitrary criteria and (2) responder analyses do not capture true individual treatment effects. J Orthop Sports Phys Ther 2023;53(11):652-654. Epub 20 June 2023. doi:10.2519/jospt.2023.11853
Approbation of the mechanism of economic reliability on the example of an industrial enterprise
Authors:   Omsk State Technical University, Terentyeva A. R.
Published: June 2023

The article considers the operation of the cascade model of the mechanism of economic reliability based on the process-technological approach. To analyze the current state of an industrial enterprise, a generalized indicator of the level of economic reliability in dynamics over six years has been established using the desirability function. Absolute indicators for the main processes of an industrial enterprise have been translated into dimensionless ones, and partial indicators of desirability have been found. Comparing the level of economic reliability with the estimates of the Harrington desirability scale meets the requirements of finding a generalized economic reliability function with a set of criteria indicators. An analysis of the potential level of economic reliability was also carried out and compared with the actual level of economic reliability. The analysis of the level of organization of ensuring economic reliability by organizational-managerial and productiontechnological modules revealed the bottlenecks of an industrial enterprise. The purpose of the work is to test the mechanism of economic reliability on the example of an industrial enterprise. The result of the developed methodology is the formation of a mechanism of economic reliability based on the processtechnological approach and the introduction of this mechanism into the economic activity of an industrial enterprise. The results obtained can be applied at industrial enterprises of any scale of production and organizational and legal form in the conditions of modern technological dynamics to increase the level of economic reliability. The author of the article came to the following conclusions: the implemented mechanism of economic reliability in the activity of an industrial enterprise allows identifying bottlenecks, as well as developing measures to eliminate them, thereby increasing the level of economic reliability; the action of this mechanism should be continuous, since the intensification of technological dynamics is an aggressive factor influencing the efficiency, stability and sustainability of the functioning of an industrial enterprise. The methodological basis of the study was made up of general scientific methods of classification, generalization, comparison, analysis.
The struggle of the Saki underground organization against the Nazi occupiers. 1942–1944
Authors:   Central Museum of Taurida, Ivanov V. A.
Published: June 2023

In the article, based on both previously unknown and published documents, there is considered the history of the underground struggle of Valentin Vyacheslavovich Kamler in the territory of the city of Saki of the Crimean ASSR. The author used materials from: the funds of the State Archive of the Republic of Crimea, the archival department (municipal archive) of the administration of the city of Saki, the museum of local history and mud therapy of the city of Saki. The actions of the underground workers are analyzed, including the following aspects: anti-fascist propaganda and agitation; collection, manufacture and storage of ammunition, military equipment; intelligence activities; the attraction of personnel from Nazi-allied foreign military contingents to the side of the Soviet government. In this work for the first time since the end of the Great Patriotic War, the names of the provocateurs who extradited V. V. Kamler and his associates to the Nazi special services and the police, are named. The publication is addressed primarily to researchers of the underground resistance movement, local historians and publicists
The attitude of the People’s Labor Union of Russian Solidarists and its subsidiaries to national administrative construction in 1987–1998
Authors:   Omsk State Agrarian University named after P. A. Stolypin, Novikov M. S.
Published: June 2023

The People’s Labor Union of Russian Solidarists is the least popular among Russian historians of organizations operating on the territory of the Russian Federation. Formed in Serbia in 1930, by emigrants, it was the oldest Russian national organization opposing the communist regime in the USSR. During the years of perestroika, the solidarists were unable to create a unified party structure in the Russian Soviet Federative Socialist Republic and act independently. As a result, the organization collaborated with anti-communists from «Democratic Russia», influenced the formation of the Russian Christian Democratic Movement. Members of the People’s Labor Union of Russian Solidarists actively participated in the discussion of economic and social issues relevant to the new statehood, including national administrative construction. The analysis of the organization’s documents, memoirs of its participants, and party journalism allow us to conclude that the lack of a unified program for the transformation of the country, focusing primarily on criticism of the Soviet experience, led to the transformation of the organization into a «discussion club» with further disappearance from the political life of the country. However, the created atmosphere of rejection of the national administrative reforms of the USSR led the solidarists and their supporters to justify and glorify the dissolution of the USSR, the loss of a number of territories and the creation of numerous points of confrontation between the federal government and the subjects of the federation.
Genealogy of the Omsk Batyushkins family in first half of the 19th century according to church records
Authors:   Omsk State Technical University, Petin D. I.
Published: June 2023

The work based on unpublished sources (church records), presents an analytical review of information about the representatives of the Batyushkins family — close direct ancestors of the subsequently wealthy and famous family in prerevolutionary Omsk. The purpose of the work is to identify the genealogical origins and connections of the Batyushkins family, which contributed to the entry of this family into the merchant class. The methodological basis of the study is a combination of the anthropological approach and the historical-genetic method. In conclusion, the special role of the merchant E. A. Terekhov in acquiring a new status for the Batyushkins family and in the general consolidation of the Omsk business families at the personal communicative level in the second half of the 19th century is emphasized.
«Kept to distribute 44 copies of proclamations...»: about the biography of Omsk revolutionary Nadezhda Terekhova (Belonogova)
Authors:   Historical Archive  of the Omsk Region, Stelmak M. M.
Published: June 2023

This publication reconstructs the biography of N. M. Terekhova (Belonogova) political figure of Omsk social-democratic, a teacher, an active participant in the socio-political movement in Western Siberia. Despite the very significant contribution to the activities of the RSDLP, the biography of this revolutionary is not reflected in historiography, her name was not included in the official Soviet historiography, although many associates, and sometimes opponents in their memoirs mentioned it, even after several decades. In the official press about it, they wrote quite rarely. The basis for the publication is a set of published and unpublished memories, memoirs and materials of the paperwork of the gendarmerie identified in the funds of the historical archive of the Omsk region. According to the results of a study built on a combination of an anthropological approach and the biographical method, the author emphasizes the particular relevance and importance of genealogical practices in the study of regional socio-political history.
Regional Dimension of history of Organs of GPU-OGPU: to the analysis of monograph by A. B. Gularyan and A. Yu. Sarana
Authors:   Omsk State Technical University, Sushko A. V.
Published: June 2023

The article characterizes the monograph of the Oryol researchers A. B. Gularyan and A. Yu. Saran, specialists in the history of domestic special services. The publication provides a comprehensive study of the structure, main directions and regional features of the activities of the GPU-OGPU bodies in the Omsk Irtysh region and the Oryol Pooch region in 1922–1934. The article analyzes the strengths and weaknesses of the monograph. It is emphasized that it contributes to the study of the political, social and everyday history of the early Soviet society. As a merit of the authors, an innovative approach to the study and comparison of the activities of the regional structures of the Soviet special services in different regions that are significantly distant from each other is noted. It is concluded that Russian historians should support and continue such an undertaking, expanding its scope geographically and chronologically. This, in general, will allow us to look at the history of state security agencies from a new angle and significantly complement scientific knowledge about their past.
Activities of territorial bodies of the NKVD in Far East providing road safety in 1941–1945
Authors:   Vladivostok Branch of the Far Eastern Law Institute of the Ministry of Internal Affairs of Russia, Zhadan A. V.
Published: June 2023

The publication is devoted to a little–studied aspect of the activities of the internal affairs bodies of the Far East during the Great Patriotic War - providing road safety. The basis of the work is unpublished sources related to the official and party documentation of the regional departments of the NKVD of the Khabarovsk and Primorsky Territories. The methodological basis of the research is the principles of historicism and consistency, as well as general scientific historical and logical methods. The article describes the situation in the field of road safety in the Far East during the period under study, analyzes the causes and conditions of its deterioration, the measures taken by the internal affairs bodies to normalize the operational situation.
The analysis of influence of temperature conditions of piston long-stroke compressor stage on thermodynamic efficiency of a heat pump
Authors:   Omsk State Technical University, Yusha V. L. , Gromov A. Yu. ,   Omsk State Technical University, Ushakov P. V. ,   JSC Scientific and Technical Complex «Cryogenic Technique»
Published: June 2023

A brief overview analysis of the applicability of heat pumps in various branches of engineering and production as one of the most energy-saving technologies is presented. The theoretical cycle of a heat pump based on a piston long-stroke low-speed compressor stage is considered, which allows to realize the compression process in a wide range of the polytrope index. The analysis of the relationship of the integral characteristics and energy efficiency of the heat pump with the temperature regime of the compressor stage when using water vapor as a working fluid is performed. The presented results of the theoretical analysis reflect the nature of the dependence of the thermal power and the transformation coefficient of the heat pump on the polytropy index of the compression process, boiling temperature, steam overheating at suction, the difference in condensation and boiling temperatures.
The method of calculating the lobe wall thickness of cuff cylinder piston seal
Authors:   Omsk State Technical University, Busarov S. S. , Kobylsky R. E. ,   Omsk State Technical University, Gromov A. Yu. ,   JSC Scientific and Technical Complex «Cryogenic Technique»
Published: June 2023

The presented article describes a method for calculating the wall thickness of the lip seal lobe in the ANSYS Workbench Mechanical software package. The main problem that designers face when choosing the wall thickness of the lobe of cuff seals for reciprocating compressor units operating without lubrication is described. As a result of the work, the maximum and minimum wall thickness are calculated for the materials most common in oil-free compressor units. Antifriction materials of the Flubon and Fluvis groups containing up to 20 % carbon fibers have the smallest wall thickness in all pressure ranges considered. At the same time, the results obtained allow us to speak about the low efficiency of cuff seals with a maximum wall thickness at pressures below 1 MPa.
The analysis of methods for calculating seals of hybrid power machines
Authors:   Omsk State Technical University, Pavlyuchenko E. A. , Tegzhanov A. S. ,   Omsk State Technical University, Shcherba V. E. ,   Omsk State Technical University, Lysenko E. A. ,   Omsk State Technical University, Kuzhbanov A. K. ,   Omsk State Technical University
Published: June 2023

The article discusses the main methods for calculating seals of hybrid power machines. The analysis of works on the designs of hybrid power machines is carried out. The main types of piston seals of pumps, compressors and hybrid power machines are considered, with an emphasis on the main advantages and disadvantages of each type of seal, as well as recommendations on the choice of seals for hybrid power machines. Based on the analysis of the work on the research of piston seals, the main methods for calculating the seals of hybrid power machines are considered and the most suitable one is determined.
Technique for designing and optimization of the Francis turbine blade system
Authors:   Peter the Great St. Petersburg Polytechnic University, Omran M. , Zharkovskiy A. A. ,   Peter the Great St. Petersburg Polytechnic University, Schur V. A. ,   Peter the Great St. Petersburg Polytechnic University, Svoboda D. G. ,   Peter the Great St. Petersburg Polytechnic University
Published: June 2023

A technique for designing the blade systems of Francis turbine is proposed. Starting with the determination the main parameters of the turbine components, where it is compatible with the operation of a hydraulic turbine at a given head. Also, the diameter of the impeller required to generate the nominal power. Then, using the realizing of the quasi-three-dimensional approach, the shape of the blade is obtained as a first approximation for a given blade, a series of calculations of three-dimensional single-phase and twophase viscous flow is performed to determine the efficiency of the turbine at different operating modes, the cavitation properties of the turbine, respectively. The critical cavitation coefficient is determined for three operating points of hydraulic turbines. Using Multi-objective Genetic Algorithm (MOGA), the optimization of energy and cavitation properties is carried out for three operations pointes. The mathematical model is based on the Latin hypercube method. As a result of the optimization, a significant improvement in the efficiency of the hydraulic turbine has been obtained, especially at partial loads.
Studies of the design layout of resistojet with porous structure for propulsion systems of small spacecraft
Authors:   Omsk State Technical University, Blinov V. N. , Kositsin V. V. ,   Omsk State Technical University, Lukyanchik A. I. ,   Omsk State Technical University
Published: June 2023

The results of experimental studies on nitrogen with an overpressure of 0,02 MPa resistojet propulsion system of a small spacecraft with a porous structure weighing 45 g and an autonomous heating element with a radius of 3 mm with a power consumption of up to 60 watts for a warm-up time of up to 300 s are presented. The possibility of using a porous structure as a volumetric fuel gas pipeline with an increase in heat transfer intensity has been experimentally proved and the actual specific heat capacity of the porous structure has been determined. Taking into account the actual specific heat capacity, theoretical studies of the mass and geometry of the porous structure in the resistojet composition are carried out, optimal with respect to the autonomous heating element used by the power and the amount of fuel heating in the range (573–1273) K. Taking into account the radius of the heating element, the fuel temperature range (573–973) K corresponding to the optimal masses and radii of the porous structure for the formation of the resistojet design layout is determined.
Demonstration of a clinical case based on the phenotypic approach of rosacea therapy
Authors: Drozhdina Marianna B. , Bobro Varvara A.
Published: June 2023

Rosacea is a chronic inflammatory disease of the skin mainly of the central facial region, having gender and age correlations. Currently, more and more data is accumulating on the analysis of rosacea phenotypes, scientific discussions are underway on the feasibility of switching from subtype classification to phenotypic classification to justify individualized approaches to therapy. The phenotypic classification is based on the manifestations of rosacea and distinguishes diagnostic signs from the main and secondary symptoms. Thus, phymatous changes and persistent central facial erythema are the only diagnostic signs (criteria) of rosacea, and erythema, telangiectasia and inflammatory papules/pustules are the main symptoms and only in combination can indicate the diagnosis of rosacea. Secondary signs of rosacea are hot flashes, burning, pain, swelling and a feeling of dryness. The symptoms of rosacea are based on various pathophysiological mechanisms, so therapy in most cases will consist of a combination of topical agents with systemic drugs or physiotherapy. The article presents a clinical case of rosacea based on a phenotypic approach to therapy.
MITO-FORIA
Authors: Wunenburger Jean-Jacques , Sancassani Victor
Published: June 2023

As investigações desenvolvidas pelas Ciências Humanas sobre o mito permitiram revalorizá-lo a partir de certas conquistas teóricas que contrastam com a desvalorização massiva da qual ele foi objeto, durante muito tempo, sob a pressão do racionalismo positivista. Por um lado, uma identidade e uma legitimidade irrefutáveis foram concedidas ao mito como um modo simbólico de apreensão da experiência humana; por outro, ele já não se restringe mais apenas ao modo de pensamento arcaico, à civilização tradicional, mas o seu polimorfismo lhe permite estruturar e orientar representações e ações, mesmo nas sociedades com representações e normas racionais. No entanto, em muitas abordagens acadêmicas permanece uma persistência das falsas evidências, dos clichês, que merecem ser o objeto de análises críticas. Particularmente, o mito é ainda frequentemente assimilado às construções e às condutas narrativas fixas, a um campo fechado de significações, em oposição às produções racionais do pensamento que, por outro lado, seriam caracterizadas por uma mobilidade, uma possibilidade de adaptação a novos dados e, portanto, uma capacidade em progredir os conteúdos do ato de pensar.
BEGUINAS
Authors: Costa Marcos Roberto Nunes , Ferreira Costa Rafael
Published: June 2023

As políticas de concentração de riqueza e poder nas mãos de poucos (nobreza e clero) chegaram a níveis assustadores na Europa no início da Baixa Idade Média (séc. XI) gerando grandes problemas econômico-político-religiosos, dentre os quais, desigualdades sociais, que faria da pobreza uma das marcas registradas da virada no milênio, o que levou ao surgimento de muitos movimentos de espiritualidade cristã em defesa dos mais pobres, a chamada “espiritualidade pauperística”. Dentre esses movimentos, um merece destaque: as Beguinas ou movimento beguinal. Primeiro, por ser um movimento espiritual marcadamente feminino, pelo menos nas suas origens, abrigava mulheres das várias classes sociais. Segundo, por ser um movimento laico, criado à margem da Igreja Católica, que nunca se submeteu a tutela de nenhuma instituição religiosa, bem como nunca se institucionalizou, sendo por isso condenado e perseguido pelas autoridades eclesiásticas, mas que atraiu vultuosos números de mulheres e resistiu por longos séculos. Eis o que iremos apresentar neste artigo.
Prevalência de sobrepeso e obesidade gestacional em unidade de saúde da família
Authors: Silva Vitória Almeida Matos da , Freitas Maria Yaná Guimarães Silva , Silva Filho Aloísio Machado da , Almeida Vivian Ranyelle Soares de , Nascimento Diana Cardeal do , Moura Jenny Caroline Vieira , Silva Juliana Macêdo dos Santos , Barbosa Roseane Dantas Amorim , Santana Alberto Bispo de , Jesus Isabela Paixão de
Published: June 2023

Objetivo: Identificar a prevalência de sobrepeso e obesidade gestacional entre mulheres atendidas por uma Unidade de Saúde da Família de um município do interior da Bahia. Métodos: Trata-se de um estudo epidemiológico de corte transversal, quantitativo e descritivo. Os dados foram coletados em formulário semiestruturado, compilados em banco de dados e analisados através do software Statistical Packard for Social Sciences. Resultados: Este estudo contou com a participação de 30 gestantes, com idade entre 18 e 44 anos. A prevalência de sobrepeso e obesidade entre as gestantes foi de 53,3%. As variáveis que apresentaram significância estatística entre sobrepeso/obesidade gestacional com variáveis socioeconômicas e clínicas em gestantes foram: Índice de Massa Corporal pré-gestacional e alimentação. Identificou elevada prevalência de gestantes com sobrepeso e obesidade, o que traz a necessidade de um olhar diferenciado para as gestantes desse território, como também, para as ações realizadas no pré-natal. Conclusão: Esse estudo demonstra a importância da assistência pré-natal na fácil e rápida identificação desta doença e seus fatores desencadeantes, e o baixo custo deste método. Além disso, a assistência pré-natal de qualidade permite identificar uma série de outros fatores de riscos gestacionais, proporcionando assistência prévia e/ou prevenção de outros agravos.
An unusual manifestation of neurofibromatosis – A case report of a vulval mass
Authors: Ingole Shivraj , Maity Ayantika
Published: June 2023

Neurofibromatosis (NF) of the female genitalia is an uncommon manifestation. Selective involvement of the labium majus is quite rare. We describe a rare manifestation of a vulval plexiform neurofibroma without clitoral involvement in a post-pubertal girl. The patient had multiple café-au-lait spots over the neck, back, buttocks and thighs, a patch of pigmentation over the pelvis and inguinal region, axillary freckling, and a large hanging left vulval mass. On ultrasound, it showed hypoechoic nodules on a hyperechoic background with significant vascularity. Magnetic resonance imaging revealed T1-weighted (T1W) hypointense and T2-weighted (T2W) hyperintense, diffuse infiltrating lesion with few T2W hyperintense tubular and nodular areas, presence of “target sign,” and intense post-contrast enhancement. A biopsy confirmed it to be neurofibroma. The patient was diagnosed with NF type 1 and underwent surgical resection.
Do cosmetics have a role in melasma? Preliminary results of a pilot study of patch testing in melasma
Authors: Divyalakshmi C. , Bhatia Riti , Hazarika Neirita
Published: June 2023

Objectives:

Melasma can be associated with pigmented contact dermatitis (PCD) that often goes unrecognized. The concept of cosmetic contact sensitivity in melasma is relatively less studied. In this era of overwhelming use of cosmetics among both men and women, the role of various cosmetic products in melasma and PCD needs to be extensively explored. Patch test in melasma patients can help recognize this cosmetic contact sensitivity in melasma patients. Thus, our study was to find the role of cosmetics in melasma patients.

Material and Methods:

A hospital-based, pilot study conducted in the Dermatology outpatient department of All India Institute of Medical Sciences, Rishikesh, Uttarakhand from January 2020 to February 2020. Seventeen consecutive patients with melasma were patch tested with Indian cosmetic series procured from the Systopic Pharmaceutical Ltd., standard set of commercial cosmetic products and patient products, if applicable. Day 3 and 5 readings were recorded.

Results:

Patch test was positive in 15 (88.2%) patients, with a relevance of 66.7%. Thiomersal was the most common allergen (53.3%) observed in our study population.

Conclusion:

Thiomersal in cosmetic products may be an important allergen to cause melasma.
Surgical Therapy for Complex Pelvic Pressure Injuries: A Review of Outcomes for Five Consecutive Years and a Proposal for a Navigator in the Care Pathway
Authors: Ting Patrick , Herrmann Glenn
Published: June 2023

Introduction. An advanced pelvic PI is a challenging problem that requires care from multiple disciplines. Objective. This study is a critical evaluation of wound recurrences after surgical repair, and an analysis of factors that may contribute to surgical failures. This study also provides a literature review of pelvic PIs and proposes how a navigator embedded in the wound care department could play a role in decreasing surgical failures. Methods. A retrospective cohort study of 33 consecutive surgeries for closure of complex pelvic PIs in 22 patients was conducted. Results. Recurrences developed in 17 of 33 surgeries (52%). Recurrences were seen most frequently in those undergoing simultaneous repair of 2 sites and those who had undergone prior surgeries. Conclusions. Long-term healing after repair of complex pelvic PIs remains a challenge, especially in certain high-risk populations. A significant portion of recurrences develop after a period of healing, so identifying and addressing factors that lead to wound breakdown following hospital discharge is a critical area of care improvement. A navigator care coordinator within the wound care department may play an important role in preventing wound recurrences.
Unusual Clinical Presentations of Cutaneous Squamous Cell Involving Distal Extremities in Four Patients: The Importance of Tissue Sampling
Authors: Jaros Scott , Googe Paul , Ziemer Carolyn , Miedema Jayson
Published: June 2023

Introduction. cSCC is the second most common cutaneous malignancy worldwide behind basal cell carcinoma. Typically, SCC is diagnosed early before it infiltrates local subcutaneous tissue or metastasizes. However, unusual presentations are possible and can lead to delayed treatment and possibly worse outcomes. Materials and Methods. All patients were White of non-Hispanic or Latino decent. Three-quarters of the cases were male, and a quarter female. The age range was 45 to 78 years. The documented sizes of lesions ranged from 6 cm to 10 cm in diameter. Three of the cases were initially diagnosed as nonhealing wounds, and one was diagnosed as cellulitis. Results. The authors observed that SCC can present unusually by mimicking nonhealing infected ulcers or skin infections such as cellulitis. Over 18 months, the authors’ practice recorded 4 cases of cSCC that were initially treated as persistent infections, which potentially lead to worse outcomes. Conclusion. These cases provide patterns and clues to potentially expedite the diagnosis and treatment of cSCC. Any skin lesion thought to be infectious but not responding to treatment should undergo tissue sampling.
Preliminary study on Strait of Malacca Tide Wave Characteristic from AIS Data Mining
Authors: Mustaffa Masnawi , Ahmad Aini Nazli , Ahmad Shaharudin
Published: June 2023

In this study, advanced data mining techniques and Automatic Identification System (AIS) data were used to examine the tidal and wave dynamics of the Strait of Malacca. This strait has been an important commercial route for centuries, connecting the Indian Ocean to the South China Sea and the Pacific Ocean. It is located between Sumatra Island's east coast and Peninsular Malaysia's west coast, with the Strait of Singapore at its southeast end. The study's initial findings indicate a strong correlation between the distance of ships' coordinates and the timing of the tide, which is mainly influenced by the harmonic motion of the sun and the moon. Through AIS data mining and analysis, this study demonstrates the potential for predicting sea heights during tidal events. These results could be further explored in future research. Overall, this study offers valuable insights into the intricate tidal and wave dynamics of the world's longest strait and highlights the promise of AIS data mining for advancing our knowledge of oceanic phenomena. The research outcomes could potentially facilitate the development of more precise and effective methods for forecasting sea heights and predicting other marine processes.
Performance measures of frequency ratio, weight of evidence and AHP models for flood risk assessment of Panchganga river basin (PRB), Kolhapur (India)
Authors: Pusdekar Prashant N. , Dudul Sanjay V.
Published: June 2023

Flood events are the most common and frequent natural disasters causing enormous loss to property and life worldwide. In this study, the Panchganga River Basin (PRB) was selected for flood susceptibility mapping using the frequency ratio (FR), weight of evidence (WoE) and Analytical Hierarchy Process (AHP) model with remote sensing and GIS based approach. For this, a flood inventory with 224 historic flood locations was prepared using Google Earth Engine. About 75% of flood locations were randomly selected for training and 25% for testing purposes. The flood susceptibility map prepared using FR, WoE and AHP model was classified into five zones such as very high, high, moderate, low risk and safe zone using ArcGIS software. The receiver operating characteristic (ROC) curves were plotted with area under curve (AUC) of 89.27%, 87.34% and 80.60% for FR, WoE and AHP models respectively. The present study will help people near Panchganga river to move to a safer place during flooding. The flood risk zone maps are extremely helpful in infrastructural developments, town planning and civil protection.
Fostering Social Entrepreneurial Resilience: A Pathway towards Integrated Disaster Risk Management
Authors: Nakum Vipul , Divi Sriram , Patel Apoorva
Published: June 2023

Social entrepreneurship (SE) has gained recognition as a key driver of the economy significantly contributing to innovation and inclusive growth. It is increasingly seen as a practical and effective solution to address a range of physical, social, economic and environmental challenges. Its role has also been critical in groundbreaking innovations toward sustainable development. Disaster risk management (DRM) planning is crucial for building resilience in the entrepreneurial ecosystem as SEs are highly vulnerable to the impacts of disasters, particularly in absence of DRM planning. This study explores the impact of disasters on SE and argues for the need for integrating DRM approaches to enhance the resilience of SE in line with the priorities of the Sendai Framework for Disaster Risk Reduction 2015-2030. Despite India's strong performance in terms of supportive business start-up ecosystems, vulnerability to natural disasters and poor preparedness pose significant challenges to its development efforts. There is a need for greater attention to be paid to DRM planning in the SE sector in order to build resilience and ensure the long-term sustainability of SE initiatives.
Peptide Synthesis Using Unprotected Amino Acids
Authors: Liu Tao , Peng Zejun , Zhao Junfeng
Published: June 2023

The mandatory use of Nα-protecting group for amino acids, which invokes protection and deprotection operations and imposes a significant negative effect on environment sustainable development, constitutes the essential principle of peptide synthesis. Using unprotected amino acids for peptide synthesis represents an ideal and attractive greening strategy. However, this strategy has been unsuccessful for more than 60 years owing to the severe epimerization that occurs during N→C peptide chain elongation. The first general unprotected amino acid strategy was developed in this study by employing a ynamide coupling reagent, which successfully addressed the notorious epimerization issue. This step- and atom-economic strategy is not only effective for synthesizing dipeptides but also adaptable to longer peptides containing more than two amino acids. The synthetic application of this method was exemplified by successful syntheses of a range of peptide active pharmaceutical ingredients (APIs). It is foreseeable that this study will bring about disruptive technologies to both academia and industry.