bluuebunny/crossref_metadata_2025 huggingface dataset:
Corioamnionitis por Ureaplasma parvum: a propósito de un caso
Authors: Moreno-Flores Antonio , Domínguez-Landesa María , Vázquez-López María Guadalupe , Sante-Fernández Laura
Published: February 2023

Objetivos

Las especies de Ureaplasma son los microorganismos más frecuentemente relacionados con casos de parto prematuro espontáneo, rotura prematura de membranas o corioamnionitis.

Caso clínico

Gestante de 28 + 6 semanas, sin antecedentes personales de interés, que acude al hospital por contracciones. Ante la sospecha clínica de corioamnionitis ingresa para cesárea segmentaria transversa, transcurriendo sin nada reseñable y siendo dada de alta a los siete días del ingreso. El neonato permanece estable y sin datos clínicos de infección. No obstante, ante la sospecha clínica de corioamnionitis se pauta tratamiento empírico con ampicilina (2 g/6 h) y gentamicina (5 mg/kg/24 h) intravenosas y se toman muestras de exudados faríngeo/amigdalar, ótico y anal/rectal. A las 24 horas se detecta en todas las muestras Ureaplasma parvum, suspendiéndose el tratamiento empírico e iniciando azitromicina intravenosa (12 mg/24 h). También se detecta U. parvum en muestra de exudado endocervical y de placenta. Tras 52 días de ingreso el lactante es dado de alta.

Conclusiones

Aunque parece clara la relación entre la colonización por estos microorganismos y el desarrollo de enfermedad perinatal, el elevado porcentaje de colonización vaginal existente y el hecho de que la mayoría de embarazadas colonizadas den a luz a término, sin ningún tipo de complicación, hacen necesarios más estudios.
Synthetic pathway of 2-fluoro-N,N-diphenylbenzamide with opto-electrical properties: NMR, FT-IR, UV-Vis spectroscopic, and DFT computational studies of the first-order nonlinear optical organic single crystal
Authors: Raveendiran C. , Prabukanthan P. , Madhavan J. , Vivekanand P. A. , Arumugam Natarajan , Almansour Abdulrahman I. , Kumar Raju Suresh , Alaqeel Shatha Ibrahim , Perumal Karthikeyan
Published: February 2023

2-Fluoro-N,N-diphenylbenzamide (2FNNDPBA), a natural nonlinear optical (NLO) single crystal, was incorporated from diphenylamine utilizing 2-fluoro benzoyl chloride as a side chain. The single crystals were successfully developed by a slothful evaporation arrangement approach utilizing ethyl acetate as a dissolvable solvent at room temperature. The synthesized compound fragmented ion peak (m/z = 291) was affirmed by gas-chromatographic mass spectrometry investigation. The unit cell dimensions were assessed using single-crystal X-ray diffraction analysis, which reveals that the crystals possess the orthorhombic system with space group Pbca. The existence of proton and carbon in a compound was affirmed by 1H and 13C nuclear magnetic resonance. The functional groups therein of 2FNNDPBA have been identified from FT-IR and FT-Raman studies and amide carbonyl stretching frequency peak appeared at 1,662 cm−1. The lower cut-off wavelength of 2FNNDPBA is found to be 240 nm and the experimental and theoretical optical band gap was calculated as 3.21 and 3.1083 eV. The UV-Visible spectrum of 2FNNDPBA shows two high-flying peaks at 240 and 273 nm. Major weight losses were observed between 160°C and 275°C for the designated compound. The thermal property for 2FNNDPBA was estimated by thermogravimetric analysis/differential thermal analysis investigation, which shows immense thermal strength up to 171°C. Density functional theory method with Gaussian 09 software for theoretical investigations of 2FNNDPBA for Mulliken charge analysis, highest occupied molecular orbital–lowest-lying unoccupied molecular orbital, and molecular electrostatic potential properties has been analyzed. The SHG productivity was proved by Kurtz-Perry powder strategy and has an efficiency 2.22 times that of standard potassium dihydrogen phosphate. The laser damage threshold of 2FNNDPBA crystals was discovered to be 1.18 GW·cm−2. The hyperpolarizability simulations further show that the current material has an excellent NLO activity tendency. The melting point of the developed crystal is 158°C.
Adaptive normalization for IPW estimation
Authors: Khan Samir , Ugander Johan
Published: February 2023

Inverse probability weighting (IPW) is a general tool in survey sampling and causal inference, used in both Horvitz–Thompson estimators, which normalize by the sample size, and Hájek/self-normalized estimators, which normalize by the sum of the inverse probability weights. In this work, we study a family of IPW estimators, first proposed by Trotter and Tukey in the context of Monte Carlo problems, that are normalized by an affine combination of the sample size and a sum of inverse weights. We show how selecting an estimator from this family in a data-dependent way to minimize asymptotic variance leads to an iterative procedure that converges to an estimator with connections to regression control methods. We refer to such estimators as adaptively normalized estimators. For mean estimation in survey sampling, the adaptively normalized estimator has asymptotic variance that is never worse than the Horvitz–Thompson and Hájek estimators. Going further, we show that adaptive normalization can be used to propose improvements of the augmented IPW (AIPW) estimator, average treatment effect (ATE) estimators, and policy learning objectives. Appealingly, these proposals preserve both the asymptotic efficiency of AIPW and the regret bounds for policy learning with IPW objectives, and deliver consistent finite sample improvements in simulations for all three of mean estimation, ATE estimation, and policy learning.
Expanding the Australia Group’s chemical weapons precursors control list with a family-based approach
Authors: Costanzi Stefano , Koblentz Gregory D. , Cupitt Richard T.
Published: February 2023

The Australia Group (AG) is a forum of like-minded states seeking to harmonize export controls to prevent the proliferation of chemical and biological weapons. The AG Chemical Weapons Precursors list features dual-use chemicals that can be used as precursors for the synthesis of chemical weapons, all individually enumerated. This is in contrast with the Chemical Weapons Convention (CWC) Schedules, which, alongside entries describing discrete chemicals, also include entries that describe families of chemicals. By using families of chemicals, the CWC achieves the objective of covering with a single entry a wide array of related chemicals of concern, including chemicals that have not yet been made. There are practical reasons why the AG Chemical Weapons Precursors list is exclusively based on the enumeration of individual chemicals. A cheminformatics tool of which we have developed a prototype, the Nonproliferation Compliance Cheminformatics Tool (NCCT), has the potential to enable export control officers to handle control lists that contain families of chemicals. Thus, it opens the way to expand the AG Chemical Weapons Precursors list to a family-based approach for some of its entries. Such a change would result in a closer alignment of the chemical space covered by the AG Chemical Weapons Precursors list with that covered by the CWC Schedules, thus closing loopholes that could be exploited by proliferators.
Fatigue crack growth analysis in polymeric materials
Authors: Sadananda Kuntimaddi , Iyyer Nagaraja , Vasudevan Asuri K. , Nani Babu Matcha
Published: February 2023

Fatigue crack growth in polymers is analyzed using the two-parametric approach. Polymers deform by crazing, viscoelastic deformation, or brittle fracture, contributing to crack growth. The analysis shows that irrespective of the nature of the deformation of the material ahead of the crack tip, the crack growth rate data can still be represented by the L-shaped curves in the ΔK–K
max plane defining two limiting variables ΔK* and K
max
*. Thus, as in metals and alloys, the L-shaped curves depict the intrinsic fatigue behavior. The analysis further confirms that the load ratio effects in all materials are intrinsic to fatigue. A simple method for the prediction of these L-shaped fatigue curves is proposed.
Ethnopolitical Processes in Contemporary Europe
Authors:   Institute of Europe, Russian Academy of Sciences, Ayvazyan Anna , Babynina Liudmila ,   Institute of Europe, Russian Academy of Sciences, Bisson Lyubov ,   Institute of Europe, Russian Academy of Sciences, Kandel Pavel ,   Institute of Europe, Russian Academy of Sciences, Kharatyan Hranush ,   Institute of Archeology and Ethnography, National Academy of Sciences, Republic of Armenia, Mironenko Viktor ,   Institute of Europe, Russian Academy of Sciences, Oskolkov Petr ,   Institute of Europe, Russian Academy of Sciences, Potemkina Olga ,   Institute of Europe, Russian Academy of Sciences, Shogunts Anna ,   Institute of Europe, Russian Academy of Sciences, Tevdoy-Bourmouli Alexander ,   MGIMO University, Turov Nikita ,   Institute of Scientific Information for Social Sciences of the Russian Academy of Sciences, Veretevskaya Anna ,   MGIMO University, Zan Mykhaylo ,   Uzhhorod National University,   Institute of Europe, Russian Academy of Sciences
Published: February 2023

The authors of the present edited volume analyze some key aspects of ethnopolitical dynamics in the contemporary European countries. The authors draw attention to such issues as the role of ethnicity in the European political order, problematic classification of ethnic minorities, the crisis of the nation-state model, integration and disengagement measures aimed at external migrants, transformation of the right-wing anti-immigrant populism. The special focus of the book is the regional cases of practical ethnopolitical management, with evidence taken from Northern Ireland, Nagorno Karabakh, Ukraine, and the Balkans. The authors show that ethnicity retains its role as one of the most important sources for political mobilization in Europe, and ethnopolitical management is still one of the key aspects of state policies.
Timbre Semantic Associations Vary Both Between and Within Instruments
Authors: Reymore Lindsey , Noble Jason , Saitis Charalampos , Traube Caroline , Wallmark Zachary
Published: February 2023

The main objective of this study is to understand how timbre semantic associations—for example, a sound’s timbre perceived as bright, rough, or hollow—vary with register and pitch height across instruments. In this experiment, 540 online participants rated single, sustained notes from eight Western orchestral instruments (flute, oboe, bass clarinet, trumpet, trombone, violin, cello, and vibraphone) across three registers (low, medium, and high) on 20 semantic scales derived from Reymore and Huron (2020). The 24 two-second stimuli, equalized in loudness, were produced using the Vienna Symphonic Library.

Exploratory modeling examined relationships between mean ratings of each semantic dimension and instrument, register, and participant musician identity (“musician” vs. “nonmusician”). For most semantic descriptors, both register and instrument were significant predictors, though the amount of variance explained differed (marginal R2). Terms that had the strongest positive relationships with register include shrill/harsh/noisy, sparkling/brilliant/bright, ringing/long decay, and percussive. Terms with the strongest negative relationships with register include deep/thick/heavy, raspy/grainy/gravelly, hollow, and woody. Post hoc modeling using only pitch height and only register to predict mean semantic rating suggests that pitch height may explain more variance than does register. Results help clarify the influence of both instrument and relative register (and pitch height) on common timbre semantic associations.
Preparation and evaluation of bacillus thuringiensis microcapsules based on biochar
Authors: Zhang B. H. , Xin L. L. , Zhu H. Y. , Yan G. Y. , Li C. Y.
Published: February 2023

The walnut shell biochar was prepared at high temperature in this experiment. The effect of different biochar on the growth of Bacillus thuringiensis (Bt) were investigated, and biochar with good biocompatibility to Bt was selected and used as an adsorbent to prepare Bt/ sodium alginate/ biochar composite microspheres. The effects of sodium alginate, calcium chloride mass fraction, and biochar addition on the encapsulation rate and the spheroidization rate of microspheres were investigated. The results showed that the optimum preparation conditions were as follows: the mass fractions (w/v) of sodium alginate, biochar, and calcium chloride were 3%, 0.4%, and 2%, respectively. The encapsulation rate and sphericity rate of prepared composite microspheres were 93.50% and 90%, and the diameter was about 1200 μm after drying. Release behavior in water showed that Bt-sodium alginate-biochar microspheres had better sustained release performance than those without biochar.
The effects of annealing temperature on size, shape, structure and optical properties of synthesized zinc oxide nanoparticles by sol-gel methods
Authors:   Department of Physics, College of Natural and Computational Science, Dambi Dollo University, Ethiopia, Bekele B. , Jule L. T. ,   Department of Physics, College of Natural and Computational Science, Dambi Dollo University, Ethiopia, Saka A. ,   Department of Physics, College of Natural and Computational Science, Dambi Dollo University, Ethiopia
Published: February 2023

Annealing affects zinc oxide nanoparticles (ZnONPs) in terms of size, structure, composition, shape, and optical properties. The aim of this study was to investigate the effects of annealing temperature on the particle size, structure, shape, chemical composition, and optical properties of synthesized ZnONPs by sol-gel method. The samples were characterized using X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FT-IR), UV/Vis spectroscopy, and Photoluminescence. From XRD result, the synthesized ZnO has pure phase hexagonal wurtzite structure. Particle size, diffraction intensity, lattice parameters, bond length and spacing distance increase with the increase in annealing temperature, while strain size and full width at half maxima is decreased. Spherical images of synthesized ZnONPs were detected from SEM images. FT-IR peaks appeared in the region of 400-500cm−1 indicated the successful synthesizes of ZnONPs. The optical absorption of ZnONPs measured at different annealing temperatures showed that red shift as the annealing temperature was increased. The energy band-gap of synthesized ZnONPs was increased as annealing temperature increases. The emission peaks of synthesized nanoparticles are independent of the temperature while its emission intensity depends on the temperature.
Cotadutide effect in liver and adipose tissue in obese mice
Authors: Marcondes-de-Castro Ilitch Aquino , Oliveira Thamiris Ferreira , Spezani Renata , Marinho Thatiany Souza , Cardoso Luiz Eduardo Macedo , Aguila Marcia Barbosa , Mandarim-de-Lacerda Carlos Alberto
Published: February 2023

Obesity, adipose tissue inflammation, and nonalcoholic fatty liver disease (NAFLD) are associated with insulin resistance and type 2 diabetes (T2D). Cotadutide is a dual agonist GLP-1/glucagon, currently in a preclinical study phase 2 that presents an anti-obesity effect. Diet-induced obese (DIO) C57BL/6 mice were treated for 4 weeks with cotadutide (30 nm/kg once a day at 14:00 h). The study focused on epididymal white adipose tissue (eWAT), liver (NAFLD), inflammation, lipid metabolism, AMP-activated protein kinase (AMPK)/mechanistic target of rapamycin (mTOR) pathways, and the endoplasmic reticulum (ER) stress. As a result, cotadutide controlled weight gain, glucose intolerance, and insulin resistance and showed beneficial effects on plasma markers in DIO mice (triacylglycerol, total cholesterol, alanine aminotransferase, and aspartate aminotransferase, leptin, adiponectin, monocyte chemoattractant protein-1, resistin, interleukin-6, tumor necrosis factor-alpha). Also, cotadutide lessened liver fat accumulation, eWAT proinflammatory markers, and ER stress. In addition, cotadutide improved lipid metabolism genes in eWAT, fatty acid synthase, peroxisome proliferator-activated receptor gamma and mitigates adipocyte hypertrophy and apoptosis. Furthermore, the effects of cotadutide were related to liver AMPK/mTOR pathway and ER stress. In conclusion, cotadutide induces weight loss and treats glucose intolerance and insulin resistance in DIO mice. In addition, cotadutide shows beneficial effects on liver lipid metabolism, mitigating steatosis, inflammation, and ER stress. Besides, in adipocytes, cotadutide decreases hypertrophy and reduces apoptosis. These actions rescuing the AMPK and mTOR pathway, improving lipid metabolism, and lessening NAFLD, inflammation, and ER stress in both eWAT and liver of DIO mice indicate cotadutide as a potentially new pharmacological treatment for T2D and associated obesity.
The influence of working seam thickness on permeability of barrier pillars near isolated fire sections
Authors:   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Krukovskyi Oleksandr , Minieіev Sehii ,   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Krukovska Viktoriia ,   Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Belikov Ihor ,   Central Staff of the SMMSS of Ukraine
Published: February 2023

The study of filtration permeability of the barrier pillar between the isolated fire section and the worked longwall ventilation drift was completed using the mathematical model developed by the authors for coupled processes of rock deformation and gas filtration. The problem is solved involving a finite element method implemented in the author's programme. When solving, the parameters of width of the barrier pillar and thickness of the mined coal seam were varied. The article presents the results of calculating the values of geomechanical parameters, permeability coefficients and gas pressure in the filtration area. It is shown that with an increase in thickness of the coal seam, intensity of the crack formation process increases in the barrier pillar. With small pillar width, the coal seam along its entire length is in a disturbed state, as well as the rocks of its roof and soil. The filtration areas around the worked longwall ventilation drift and the isolated conveyor drift are connected both along the coal seam and along the host rocks. This means that at a certain value of the pressure drop, filtration of fire gases into the mine workings of the worked excavation section is possible. With a greater width of the pillar, between disturbed rocks around the mine workings of the worked section and isolated fire one, there is a barrier made of undisturbed rocks. That impermeable barrier prevents gas filtration from one mine workings to another. Its width decreases with an increase in the thickness of the coal seam. Based on the results of calculating gas pressure, it is shown that methane from the coal seam moves into atmosphere of the mine workings, where gas pressure has lower values. At the same time, for the accepted conditions, with a pillar width of 20 m and a seam thickness of 0.4 m, gas is filtered from the mine workings of isolated fire section into the adjacent excavation section along the disturbed rocks of the seam roof. In the rest of the cases, the areas of low pressure around the mine workings are separated by zones of higher pressure, exceeding pressure of fire gases in the isolated section. Filtration of fire gases into atmosphere of the worked excavation section is impossible under such conditions.
S. A. PODOLINSKYI IN THE ENERGETIC INTERPRETATION OF THE EVOLUTION OF NATURE AND SOCIETY
Authors:   State University of Infrastructure and Technologies, Pylypchuk O. Ya. , Strelko О. H. ,   State University of Infrastructure and Technologies, Pylypchuk O. O. ,   State University of Infrastructure and Technologies
Published: February 2023

Serhii Andriyovych Podolinskyi (1850—1891) — a researcher of nature, natural philosopher, doctor, public figure and publicist, lived a short life. Still with the main works of S. A. Podolynskyi is almost unknown to the scientific community. Great Ukrainian scientist V. I. Vernadskyi was inspired by the scientific works and ideas of S. A. Podolinskyi. And the characteristics of S. A. Podolinskyi as a “forgotten scientific innovator”, which was given to him by V. I. Vernadskyi at the beginning of the 20th century, remains largely fair even today. The article was prepared for the 150th anniversary of the “energy concept” of S. A. Podolinskyi and dedicated to the history of his work “Work and its relationship to the distribution of energy” (1880). A number of issues of the distribution of solar energy in the universe are covered. The data on the value of S. A. Podolinskyi in the energetic interpretation of the development of nature and society. Analysis of each section of the article by S. A. Podolinskyi in the context of the impact of work on the distribution of solar energy on the Earth’s surface. Ideas of S. A. Podolinskyi, presented in his work “Man’s work and its attitude to the distribution of energy” testify not only to the priority of domestic science on many issues of natural science, the relevance of which is realized only in our time, but also retain methodological value in the world context. In the work of S. A. Podolinskyi’s reader will find an example of the formulation and approach to solving an interesting and necessary problem in the scientific field, which are characteristic of outstanding and original scientists. The most important is the opening of S. A. Podolinskyi that the development of living organisms on the Earth’s surface occurs under the influence of solar energy. That is why the name S. A. Podolynskyi is deservedly mentioned among the predecessors of V. I. Vernadskyi, who studied the energetics of living matter and the formation of the doctrine of the biosphere and noosphere. The importance of the work of S. A. Podolinskyi is considered and its further prospects in the development of scientific research on the use of energy.
Clinical Pathways for the Identification and Referral for Social Needs: A Systematic Review
Authors: Wong-See Harmonie , Calik Anna , Ostojic Katarina , Raman Shanti , Woolfenden Susan
Published: February 2023

CONTEXT

Recognition of the importance of the social determinants of child health has prompted increased interest in clinical pathways that identify and refer for social needs.

OBJECTIVE

The aim of this systematic review was to determine the effectiveness of interventions that identify and refer for social needs for families with children aged 0 to 18 years attending outpatient community and ambulatory healthcare services.

DATA SOURCES

We searched the following databases: Medline, Embase, PsychINFO, CINAHL, Emcare, EBMR.

STUDY SELECTION

Studies were included if children and their families underwent a process of identification and referral for social needs in outpatient community and ambulatory healthcare services.

DATA EXTRACTION

Initial searches identified 5490 titles, from which 18 studies (73 707 families and children) were finally retained.

RESULTS

Intervention pathways were grouped into 3 categories based on whether identification and referral for social needs was conducted with only targeted community resources, a navigator, or with clinician training. The majority of studies reported positive outcomes; with an increase in social needs identification, an increase in referrals following identification, or a reduction in social needs. Child health outcome results were inconsistent.

LIMITATIONS

The search terms used may have provided bias toward countries in which these terms are in use. The heterogeneity of outcome measures between included studies meant a meta-analysis was not possible.

CONCLUSIONS

Despite evidence that clinical pathways for children and families help reduce social needs, evidence for improvements in child health is insufficient. Further studies from diverse settings are needed to inform clinical practice to optimize child health outcomes.
Distribution of black fungus gnats (Diptera, Sciaridae) in Morocco, with an updated list of species and an emphasis on Moroccan crop pest species
Authors: Ouazzani N. H. El , Kettani K.
Published: February 2023

The present work deals with the spatial distribution of the sciarid species (black fungus gnats) recorded from Morocco throughout the major biogeographical regions: Rif, Eastern Morocco, Atlantic Plain, Middle Atlas, High Atlas, and Anti-Atlas, providing for the first time an atlas of the distribution of Moroccan sciarid fauna. The analysis of the species distribution showed differences between the regions, revealing that the High Atlas and the Rif hosted the greatest specific richness. Of the surveyed sites, forests, crop fields, and aquatic habitats seem to be the most favourable for supporting many sciarid species. Ecological preferences for each species are discussed, indicating a clear preference for medium altitudes ranging from 500 to 1000 m. Alongside the study on the distribution of species, a review of the species recorded in Morocco and gathered from the literature has enabled us to update the checklist of sciarid species, which comprises 65 so far in Morocco. Particular emphasis focused on black fungus gnats considered potentially harmful, with the aim of assessing their distribution in the country, has revealed that Bradysia transitata, B. trivittata, B. xenoreflexa, Lycoriella sativae, Scatopsciara subarmata were collected from strawberry greenhouses (Rosaceae: strawberries), Bradysia placida, B. santorina, B. scabricornis, B. tilicola, B. trivittata and Camptochaeta jeskei were collected from fruit trees (Rosaceae: almond trees), Bradysia santorina, Corynoptera saccata and C. semipedestris were found on palms (Arecaceae: date palms), Scatopsciara atomaria and S. curvilinea were captured in crop fields (Poaceae, Fabaceae), Bradysia scabricornis, Bradysiopsis vittata were collected from Liliaceae, Scatopsciara atomaria was also found on Asteraceae and Solanaceae, and Corynoptera praeparvula was exclusively reported from Solanaceae.
Distribution and management of Fallopia japonica in riparian biotopes in Slovakia and Austria
Authors: Vaseková B. , Majorošová M. , Belčáková I. , Slobodník B.
Published: February 2023

Globally, invasive species represent a serious threat to biodiversity and to the ecosystem. As an undesirable part of riparian ecosystems, invasive plants form continuous growths on the banks of watercourses. One of the biggest problems at river bank sites is Japanese knotweed, Fallopia japonica (Houtt.) Ronse Decr, which is an extremely invasive and aggressive weed. The topic of the interaction of flow and invasive plant species in shore stands is rich and presents a wide range of possibilities for research. The presented paper brings the results of our studies on the invasions of F. japonica in chosen riparian vegetation sites in Austria and Slovakia from 2011–2020 (36 stands). Our research was aimed at the survey on the changes in the distribution (spread) of F. japonica at the selected river sites; assessment of the impact of the watercourse regime on the spread of F. japonica; monitoring of the population growth dynamics of F. japonica and assessment of possibilities for effective eradication of F. japonica in context of the riparian vegetation management. We used standard techniques of field survey, mapping, flow modeling/simulation, and laboratory experiments. Our research results showed that water streams are not primary invasion starters until there is a flood. As long as flooding does not exceed the critical speed of the water stream, there is no direct damage to the invasive plant. The water body can be a secondary trigger for plant invasion at normal speeds. In addition, F. japonica reproduction ability directly conditions its population dynamic growth. We can report that selective invasion removal adapted to local conditions can be most suitable and beneficial for municipalities.
THE STUDY OF THE INFLUENCE OF COMBINED CHANGES IN THE INITIAL DATA ON THE OCCURRENCE OF ANOMALIES FOR RESOURCE ALLOCATION
Authors: Maliienko O. O. , Turchyna V. A.
Published: February 2023

This paper considers one of the optimization problems on graphs, namely, the problem of constructing parallel ordering of vertices. Three cases of anomalous deterioration of the value of the objective function with the simultaneous improvement of the two initial parameters are investigated. The obtained results are the basis for further study of subclasses of graphs for which such anomalies will always arise.
Referencial de cidade e ensino: uma revisão necessária
Authors: Lassance Guilherme , Saboia Luciana , Capillé Cauê , Pescatori Carolina
Published: February 2023

Pretende problematizar o referencial de cidade utilizado atualmente pelo ensino de urbanismo e defender uma alternativa que possa ajudar a enfrentar os desafios colocados pelos Objetivos de Desenvolvimento Sustentável (ODS) da ONU, quando aplicados à realidade urbana latino-americana, marcada por forte desigualdade e segregação socioespacial. Para tanto, parte de uma análise crítica de intervenções urbanísticas realizadas na cidade do Rio de Janeiro, traçando um elo com o ensino de urbanismo praticado no curso que constitui ainda hoje importante referência curricular no Brasil. A argumentação em defesa de um paradigma alternativo de cidade para o ensino de urbanismo recorre ainda a resultados de pesquisa anterior baseada na hipótese da pertinência de uma releitura de projetos do urbanismo moderno para lidar com os desafios da cidade contemporânea e a questão da integração de seus componentes infraestruturais. Como resultados dessa análise crítica de paradigmas, destaca diversas questões a respeito da aplicabilidade e até mesmo contradição de alguns ODS. Conclui, então, sobre a urgência de uma revisão dos referenciais de projeto utilizados no ensino de urbanismo , defendendo a pertinência de uma abordagem mais integrada entre arquitetura, urbanismo, infraestrutura e território que um olhar menos preconceituoso com as lições do urbanismo moderno permitiria construir.
La gobernanza del agua, del páramo al piedemonte: Actores y planificación sobre el río Cusiana.
Authors: Mendieta Daza Juan Felipe , Gonzalez Luis Fernando , Pérez Natacha , Bautista Eduard
Published: February 2023

Los procesos de gobernanza del agua están ligados a cuatro dimensiones en el territorio: social, económica, ambiental y política. En este artículo los componentes se superponen sobre dos escenarios antagónicos: el páramo como ecosistema montañoso del río Cusiana en el municipio de Aquitania (Boyacá), alterado por los procesos agrícolas de la cebolla y la papa, y el municipio de Maní (Casanare), ubicado al final de la cuenca del río Cusiana, con un ecosistema de llanuras ganaderas, alta extracción de petróleo y procesos agroindustriales para cultivos de palma africana y arroz. Se reconocen algunos actores y su influencia en el territorio, expresada en su relación con las actividades económicas ligadas al extractivismo y al productivismo; se analizan herramientas de planificación como Planes de Desarrollo y Ordenamiento Territorial (EOTs y POMCA), a la luz de la gobernanza del agua y los Objetivos de Desarrollo Sostenible (ODS).
Impacto dos sistemas de incentivo ao investimento na estrutura de capitais e nos resultados: o caso das empresas portuguesas
Authors: Parreira Eliana V. , Pires Amelia M.M. , Odete Fernandes Paula
Published: February 2023

O estudo foi desenvolvido para perceber se os sistemas de incentivo do Estado português são benéficos ao ponto de as empresas se sentirem motivadas a recorrer a eles para se poderem desenvolver e crescer. Neste âmbito, tem como objetivo principal averiguar se os subsídios ao investimento têm um impacto positivo na estrutura de capitais e nos resultados das empresas após o seu recebimento. Para lhe dar resposta, optou-se por uma metodologia de natureza quantitativa, com base na informação recolhida de uma amostra de 184 empresas portuguesas, através da plataforma Sabi, para o período temporal de 2010 a 2017, e formuladas seis hipóteses de investigação. As duas primeiras foram formuladas para responder ao objetivo, perceber se existem impactos positivos nos resultados e na estrutura de capitais das empresas, e as restantes quatro, formuladas de forma complementar, para perceber se existem diferenças nesses impactos por setores de atividade e por dimensão. Para testar as hipóteses propostas, recorreu-se ao modelo estatístico de regressão linear e a testes não paramétricos. Os resultados obtidos comprovaram a existência de efeitos positivos no impacto dos subsídios, tanto ao nível dos resultados como ao da estrutura de capitais nas empresas, ainda que não estatisticamente significativos. Comprovou-se também a existência de diferenças por setores de atividade e por dimensão, para a atividade alojamento e restauração e grandes empresas, respetivamente.
Apuntando al trabajo con las emociones desde la formación en Trabajo Social con sujetos y familias
Authors: Castrillón Agudelo Natalia Andrea , Martínez Gómez Lina María
Published: February 2023

El artículo expone el lugar central de las emociones en la propuesta educativa de Trabajo Social de la universidad del Quindío, específicamente en los espacios académicos Trabajo Social Contemporáneo II y III, destinados a la formación para la praxis profesional con sujetos y familias.  Se plantean los aportes de las pioneras que dan soporte a esta apuesta formativa, y las estrategias de enseñanza-aprendizaje implementadas para concretarla en el abordaje de las dimensiones de la disciplina-profesión, desde un compromiso con la reflexividad de las(os) estudiantes de sí mismas(os) como sujetos, con emociones construidas y transformadas en interacciones significativas, como las familiares.
Solar panels problem after end-of-life and waste management (SWOT analysis for the global directives of PV's waste management)
Authors: Ghaleb Al-Aqqad Ali Omar , Menyhart Jozsef
Published: February 2023

Photovoltaic energy is a well-known term nowadays, and with the continuous increase in PV demand, it has become necessary to consider the other sides that may affect the success of it, which is considered one of the real effects on the environment. The PV waste has started to create a large issue with the absence of administrative procedures in many countries. Despite the estimated life of photovoltaic panels being between 20 and 30 years, many units have already started to stop working. However, research indicates the total cost of new materials to manufacture a PV panel is around USD 90 per square meter, compared to USD 13.62 for the costs of recycling a PV module. The regulations disclosed that the problem of EoL for PV modules and their management is still not considered an issue in many countries. Therefore, SWOT analysis was used to evaluate the EoL management of waste PV modules in three regions in Washington, California, and the European Union's WEEE Directive. This study presents recommendations to strengthen regulations to manage the problems of the EoL waste, and open the way for countries and the private sector to realize the responsibility that may affect the environment.
Can the transection plane be optimized in pancreatic resections?
Authors: Szuák András , Korom Csaba , Németh Károly , Nemeskéri Ágnes , Harsányi László
Published: February 2023

Purpose

According to current protocol, the separation of pancreatic head and body is performed at the level of superior mesenteric vein (SMV). Previous data indicate that the resection plane should be modified in portal annular pancreas. We presumed that the optimal line of pancreatic resections could also be different in other cases. Our aim is to simulate pancreatic resections in different planes and find the optimal resection line with the minimum number of cut vessels.

Main methods

25 abdominal vascular corrosion casts were prepared, the aorta and the portal vein were cannulated. CT scans were taken on the casts, and specific planes were reconstructed simulating different resection lines. The total amount of cross sections of vessels were calculated in the different planes.

Results

In our series, the optimal plane is the SMV in 11/25, 2 cm left in 10/25, 1 cm left in 4/25, 1 cm right in 1/25 and 2 cm right in none of our cases. The group of left sided extension contain more than half of the cases. With left sided resections, the cut surface of the vessels may be lowered to even 29% compared to the SMV plane.

Conclusion

Our study revealed that pancreatic resections should be extended to the left side of the SMV in more than half of our cases. Therefore, the resection plane should be determined by preoperative imaging methods. Using DICOM viewer with multiplanar reconstruction, the resection planes can be simulated in clinical practice, which would reduce the risk of postoperative bleeding.
Nowy model nauczania na kierunku matematyka stosowana zorientowany na kształcenie praktycznych umiejętności informatycznych
Authors:   Prof. nadzw. dr hab., Politechnika Białostocka, Wydział Informatyki, Polska, Mozyrska Dorota , Chmielewski Andrzej ,   Dr inż., Politechnika Białostocka, Wydział Informatyki, Polska
Published: February 2023

This article presents the progress made so far in the implementation of the new curriculum in the field of applied mathematics, engineering studies, practical truck, provided by the Faculty of Computer Science of the Bialystok University of Technology from the academic year 2020/2021. The program of the course has been modernized and oriented towards practical applications, from the beginning of studies, through teaching with the use of the Python language. A number of programming subjects were introduced into the curriculum and an innovative approach to teaching mathematics subjects was applied with the addition of specialist laboratories to these subjects. The new model of teaching is aimed at increasing the retention and motivation of students both in terms of learning more tools in mathematics and data analysis, as well as in terms of future success in their professional work. This work contains an overview of the curriculum in the aforementioned field, as well as the results of the preliminary survey of the 1st semester students along with its analysis.
Nauka programowania dla uczniów klas 1–3 – możliwości i ograniczenia
Authors:   Dr, Uniwersytet Śląski, Wydział Nauk Społecznych, Instytut Pedagogiki, Katowice, Polska, Musioł Marcin
Published: February 2023

The introduction of programming to the compulsory content of IT education in the early school classes should be assessed as a significant qualitative change in this education. Unfortunately, no large-scale activities aimed at substantive and methodological preparation of teachers for the implementation of this content were undertaken. Over four-years practice gave these teachers the opportunity to acquire programming teaching competences, especially in the process of self-education. Another problem in teaching programming is the level of development of students in these classes.
Konteneryzacja usług Django i Postgres z wykorzystaniem docker-compose
Authors:   Dr inż., Uniwersytet Technologiczno-Humanistyczny w Radomiu, Wydział Informatyki i Matematyki, Katedra Informatyki, Polska, Wołoszyn Jacek , Wołoszyn Michał ,   Student, Goldsmiths, University of London, England
Published: February 2023

The article shows the process of placing applications that provide web services in Docker containers, which allows you to significantly reduce the time to set up and maintain a work environment. Docker enables real-time scaling of the application infrastructure and improves resource utilization by supporting multiple containers. It also provides building of event-driven service-oriented applications. The whole thing allows you to focus on your business goals. The following chapters examine the Docker-based technology. They describe the steps of preparing the environment for building the configuration file and starting the container from creating the Dockerfile file, docker-compose.yml, through database configuration and starting the service itself.
Breviscapine restores sevoflurane-induced cognitive dysfunction by activating the PI3K/Akt pathway and inhibiting NF-κB
Authors: Mao Qingju , Cheng Ke , Zhang Zhen
Published: February 2023

Postoperative cognitive dysfunction (POCD) is featured by cognitive impairments in patients with high morbidity and mortality. Sevoflurane (SEV) is one of the main drugs used to maintain clinical general anesthesia and has been found to cause cognitive dysfunction. Breviscapine has various pharmacological effects. However, the effects of breviscapine on sevoflurane-induced cognitive dysfunction is unclear. The sevoflurane-induced cognitive dysfunction rat model was established. Morris water maze task was conducted to detect time in target quadrant, number of platform crossings, and the distance covered in the quadrant. Hematoxylin and eosin (H&E) staining was used to examine cell morphology. Cell apoptosis was analyzed through terminal deoxynucleotidyl transferase (TdT)-mediated dUTP Nick-End Labeling (TUNEL) staining. Quantitative reverse transcription polymerase chain reaction (qRT-PCR) detected the messenger RNA (mRNA) levels. Western blot assay was conducted to measure the protein level. Enzyme-linked immunosorbent serologic assay examined tumor necrosis factor-α, interleukin (IL)-6, IL-1β, malondialdehyde, superoxide dismutase, plasma glutathione peroxidase, and catalase levels. Breviscapine improved sevoflurane-induced cognitive dysfunctioning in rats. Breviscapine could play a suppressive role in apoptosis in the brain tissues of sevoflurane-induced rats. Further functional analysis showed that sevoflurane increased inflammation and oxidative stress in the brain tissues of sevoflurane-induced rats whereas breviscapine exerted apposite effects on sevoflurane-induced inflammation and oxidative stress. Additionally, we demonstrated that breviscapine promoted sevoflurane-induced phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) (PI3K/Akt) pathway and inhibited sevoflurane-induced nuclear factor kappa B (NF-κB) pathway in the brain tissues of rats. These results indicate that breviscapine could improve sevoflurane-induced cognitive dysfunction through activating the PI3K/Akt pathway and suppressing NF-κB pathway, which provides a therapeutic method for patients with sevoflurane-induced cognitive dysfunction.
DFT investigation of pyramidal Au\(_{9}\)M\(^{2+}\) and Au\(_{19}\)M (M = Sc-Ni): Similarities and Differences of Structural Evolution, Electronic and Magnetic Properties
Authors: Lan Ngo Thi , Mai Nguyen Thi , Dang Nguyen Van , Tung Nguyen Thanh
Published: February 2023

Au102+ and Au20 pyramids, whose stability and inertness are comparable to those of carbon fullerene C60, are considered as important landmarks in the long-history investigation of gold nanoclusters. Numerous experimental and theoretical studies on doping Au102+ and Au20 with transition metal atoms have been carried out for specific properties that can be used as advanced materials in nanotechnology applications. In this work, we discussed the similarities and differences between the structural, stability, and electronic properties of Au9M2+ and Au19M (M = Sc-Ni) clusters using density functional theory calculations. It is found that except for the preferred dopant site, the structural evolution of Au9M2+ cluster resembles that of Au19M in general. Although the V dopant seems to be the important ingredient for the structural transformation in both species, it is remarkable that the transformation appears stronger in Au19V compared with Au9V2+.  The calculated average binding energies are utilized to identify their relative stable patterns. Depending on the 3d transition metal atom dopant, the spin magnetic moments of Au9M2+ and Au19­M clusters vary from 0 to 5 μB, reaching the highest value with the Cr-doped species. We show that both Au9Cr2+ and Au19Cr have similarities in the electronic structures and are potential magnetic superatoms.
Павел Александрович Кротов, Российский флот на Балтике при Петре Великом, Историческая Илюстрация, Санкт-Петербург 2017, 744 ss. (Библиотека Морского собрания)
Authors: Krokosz Paweł
Published: February 2023

.
The relationship between school-related gender-based violence and absenteeism: Evidence from 14 Southern and Eastern African countries
Authors: Lee Sora , Rudolf Robert
Published: February 2023

Children in sub-Saharan African countries face higher exposure to gender-based violence (GBV) compared to their counterparts in other world regions (United Nations Children’s Fund [UNICEF], 2014). When GBV occurs in schools, it severely endangers access to education. Using the third round of data of the Southern and Eastern Africa Consortium for Monitoring Educational Quality (SACMEQ) from over 60,000 Grade 6 learners across 14 countries, we examined the relationship between GBV in primary schools and learners’ absenteeism. Findings indicate that sexual harassment perpetrated by teachers significantly increases learners’ absenteeism. In contrast, effects were less clear when the perpetrator was a fellow learner. Effects found are similar in magnitude for girls and boys. Violence prevention education programmes and stricter punishment for offenders are needed to establish a safer school environment and overcome harassment-related barriers to learning.
Method for Determining the Body's Level of Protection According to Oxidant Status in Assessing the Influence of Industrial Risk Factors on Health
Authors: Korenevskiy Nikolay Aleexevich , Al-Kasasbeh Riad Taha , Al-Kasasbeh Etab T. , Al-Smadi Moaath Musa , Aikeyeva Altyn A. , Al-Jundi Mohammad , Rodionova Sofia N. , Al-Habahbeh Osama M. , Filist Sergey , Alshamasin Mahdi Salman , Maksim Ilyash
Published: February 2023

This work aims at improving the quality of health assessments, specifically under the influence of occupational risk factors. For this purpose, additional informative indicators are utilized in prognostic and diagnostic models. The models are used to characterize the level of body protection based on oxidative status. A quantitative method is proposed to assess the body's level of protection by means of the levels of lipid peroxidation and antioxidant activity, which characterize the body's oxidative status. A mechanism is developed for integrating the proposed method into prognostic and diagnostic decision rules. The developed rules are in the form of mathematical models used to synthesize hybrid fuzzy decision rules, which are then used to quantify the level of body protection (LBP) against external risk factors, based on the use of protection level functions in terms of lipid peroxidation and antioxidant activity. A mechanism for embedding LBP into predictive and diagnostic decision rules has been proposed. The proposed method is used to predict the occurrence and development of coronary heart disease in railroad locomotive drivers. It was found that to improve the predicting and diagnosing of diseases caused by external pathogenic factors, quantitative assessments of LBP, determined by oxidative status, can be implemented. It has been established that the use of the protection level indicator in predictive decision rules makes it possible to increase the efficiency of the prediction while simultaneously increasing its accuracy.