bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of growth-stimulating agents in table beet cultivation on irrigated land in the Northern Caspian
Authors: Bondarenko Anastasia Nikolaevna , Kostyrenko Oksana Vladimirovna , Tyutyuma Andrey Vladimirovich
Published: April 2023

For the first time, on the irrigated lands of the Astrakhan region, a study was conducted on the influence of foliar application of modern growth-stimulating drugs on table beets. In a scientific study conducted during 2019... 2021, a two-factor field experiment on table beet was laid down according to generally accepted methods. Biochemical indicators were determined: sugars; dry matter; nitrates. The results obtained during the study made it possible to distinguish a variant using foliar application of complex preparations Aminovit, which had a significant impact on all varieties and hybrid presented in the experiment. The lowest content of nitrates of 1015 mg/kg in root crops turned out to be in the Khutoryanka variety in the version with foliar application of Aminovit. It should also be noted that a high nitrate value of 1390 mg/kg was in the control variant of Mulatka and Bon F1 hybrid. As a result, foliar application did not lead to an excess of the MAC (1400) nitrates in the root crops of the table beet.
FATİH AKIN’IN FİLMLERİNDE KİMLİK, ÖTEKİLİK VE GÖÇ OLGUSU
Authors: KAÇAR Ferhat
Published: April 2023

Kimlik, firmaların ürün kimliğinden post-kolonyal kimliğe, kişisel kimliklerden etnik, dinsel, cinsel, toplumsal kimliklere kadar geniş bir kavram çeşitliliğine sahiptir. Özellikle modern çağda kimlik sorununun sadece ulus kimlik düzeyinde değil, aynı zamanda kültürel yaşam içinde farklı kimlik düzeyinde de belirleyiciliği söz konusudur. Dolayısıyla kimlikle ilgili kavram tanımlaması ve kimlikle ilgili tartışmalar sinemanın da sürekli odağında olmuştur. Bu makalede sinemada kimliği tartışmak için öncelikle kimlik, öteki ve madun gibi kavramların tanımı yapılmıştır. Daha sonra bu kavramlarla ilgili tartışmalar Akın’ın filmlerinden hareketle analizlerle ortaya konulmuştur. Akın, filmlerinde toplumsal-politik dünya içerisinde farklı kimliklerin; kültürel, dinsel, dilsel, ırksal farklılığa sahip grupların istendiğinde bir arada barış içinde yaşayabilecekleri ve bir arada yaşayan insanların her türlü kimliğe saygılı olabilecekleri, bir insanın birden fazla kimliksel aidiyetinin olmasının sorun oluşturmayacağını kendi filmleriyle anlatmaktadır. Bu minvalde Kısa ve Acısız (1998), Temmuz’da (2000), Solino (2002), Duvara Karşı (2004), Yaşamın Kıyısında (2007), Kesik (2014) ve Paramparça (2017) gibi filmlerin; göç, kimlik, öteki, kültürel değişme gibi kavramlarının “toplumbilimsel yöntem” ve “söylem analizi” yöntemleriyle analizleri yapılmıştır. Böylece kimlikle ilgili ortaya konulan teorik tanımlamalar Akın’ın filmleriyle somutlaştırılmaya çalışılmıştır.
THE WORK OF THE OBSTETRIC SERVICE IN THE REPUBLIC OF DAGESTAN TAKING INTO ACCOUNT THE DYNAMICS OF DEMOGRAPHIC PROCESSES
Authors: Kurabekova Nailya , Zharkin Nikolay
Published: April 2023

The article presents the results of the analysisof the dynamics of the demographic situation and the reproductive potential of residents byDerbent and Derbent district of Dagestan. It was revealed that the differentiation between the districts in terms of demographic findings and women reproductive health indicators increases, which affects the performance of birth care services.
Analytical control of industrial emissions
Authors: Konopel'ko Leonid , Popov Oleg , Kustikov Yuriy , Kolobova Anna , Mal'ginov Andrey , Manevich Dmitriy , Pinchuk Ol'ga , Pronin Anton , Shevchenko Vladimir
Published: April 2023

The presented monograph, in addition to information on various aspects of the use of automatic measuring systems for monitoring emissions of harmful pollutants, on the control of emissions of the so-called. "greenhouse" contains information on gases, the application of emission control systems using calculation methods based on the modeling of technological processes, and an overview of specific examples of the practical use in the Russian Federation of automatic measurement systems for emission control.
Metodológica para la gestión de innovación y su transferencia tecnológica: incidencia en la zona lacustre de Pátzcuaro, Michoacán.
Authors: Tapia Salazar Martín , Adame Rodríguez Laura , Villanueva Pimentel Maricela
Published: April 2023

La generación de nuevos procesos innovadores y la gestión de los mismos ha propiciado el trabajo colaborativo, interdisciplinario e interinstitucional para la estructuración de proyectos con incidencia social que atiendan las problemáticas reales del contexto mediante la aplicación de conocimientos en transferencias tecnológicas. La presente investigación tiene como objetivo diseñar una metodología para la gestión de innovación y su transferencia tecnológica basada en el estudio de caso de la zona lacustre de Pátzcuaro, Michoacán y se plantea como hipótesis “El caso de transferencia tecnológica con incidencia social en la zona lacustre de Pátzcuaro, Michoacán, permite la identificación de los elementos para estructurar una metodología para la gestión de innovación y su transferencia”. El proceso que se siguió para la estructuración de esta metodología se fundamentó en las siguientes fases: 1) Origen de la metodología de transferencia, 2) Identificación de los elementos que conforman la metodología y 3) Definición y estructuración de la metodología. Con base al método y procedimiento desarrollado como parte de la presente investigación se obtiene como principal resultado la metodología para la gestión de innovación y su transferencia tecnológica, presentado como un modelo que consta de 3 etapas; la primera etapa corresponde a la base estratégica, la segunda a la concepción y ejecución y la tercera a la evaluación y mejora. Con el diseño de este modelo desarrollado a partir de la metodología basada en el estudio de caso de la zona lacustre de Pátzcuaro, Michoacán se confirma el cumplimiento del objetivo planteado
Probabilistic-Based Forecasting Method For Time Series Datasets
Authors: BABA Abdullatif
Published: April 2023

In this paper, a new probabilistic technique (a variant of Multiple Model Particle Filter-MMPF) will be used to predict time-series datasets. At first, the reliable performance of our method is proved using a virtual random scenario containing sixty successive days; a large difference between the predicted states and the real corresponding values arises on the second, third, and fourth day. The predicted states that are determined by using our method converge rapidly towards the real values while a classical linear model exhibits a large amount of divergence if used alone here. Then, the performance of our approach is compared with some other techniques that were already applied to the same time-series datasets: IEX (Istanbul Stock Exchange Index), TAIEX (Taiwan Stock Exchange), and ABC (The Australian Beer Consumption). The performance evaluation metrics that are utilized here are the correlation coefficient, the mean absolute percentage error, and the root mean squared error.
Principles of Genetic Fingerprinting in Forensic Medicine
Authors: Jawad Evan Farhan , Mahdi Wijdan Thamer , Yaseen Hayder Shareef
Published: April 2023

The examination of forensic DNA is the focus of this study. The analysis done in forensic ӏabs' bioӏogy section is known as forensic biology. This essay aims to provide a brief overview of forensic DNA anaӏysis and DNA categorization. The ӏaboratory process known as DNA fingerprinting uses the nucӏeotide sequences of certain areas of human DNA that are unique to each individualӏ to determine a person's potentiaӏ identification. Paternity testing, other forensic appӏications, and forensic DNA fingerprinting investigations may aӏӏ be used. The objective in these situations is to "match" two DNA fingerprints, such as a DNA sampӏe from a known individuaӏ and one from an unknown individuaӏ. DNA evidence is simpӏe to get since every human ceӏӏ has genetic materiaӏ. Every individuaӏ ӏeaves a bioӏogicaӏ traiӏ when they come into touch with ӏiving and non-ӏiving objects, making it possibӏe to identify and reӏate it to the ӏocations where Maha was born and grown. This information may then be empӏoyed in forensic science. With the abiӏity to extract enough DNA from even the tiniest bioӏogicaӏ sampӏe, poӏice may now match suspects to evidence coӏӏected at crime scenes, defend the innocent, and catch the genuine offender.
Guías sobre el manejo perioperatorio de pacientes sospechosos o susceptibles de padecer Hipertermia Maligna del Grupo Europeo de Hipertermia Maligna.
Authors: Rocio López Herrero  , David Velasco Villanueva  , Belén Sánchez Quirós
Published: April 2023

La hipertermia maligna (HM) es una afección potencialmente fatal, en la que los individuos genéticamente predispuestos desarrollan una reacción hipermetabólica a los anestésicos inhalatorios o a la succinilcolina. No existen ensayos de intervención para informar del manejo óptimo de los pacientes susceptibles de padecer HM. Estas guías pretenden agrupar el conocimiento disponible sobre el manejo perioperatorio de pacientes susceptibles a HM y la preparación de las máquinas de anestesia. Las pautas fueron desarrolladas por el Grupo Europeo de HM y se basan en la evaluación de la literatura disponible y en un proceso de consenso formal. La recomendación más importante es que los pacientes susceptibles deben recibir una anestesia libre de agentes desencadenantes, se debe evitar el dantroleno profiláctico, el seguimiento intraoperatorio y el postoperatorio no deben verse alterados por la susceptibilidad al cuadro y los pacientes pueden ser anestesiados en un entorno ambulatorio.
A Review of CFD Modeling of Erosion-induced Corrosion Formation in Water Jets Using FEA
Authors: Gök Kadir , Ada Hediye Deniz , Kilicaslan Nazlıhan , Gök Arif
Published: April 2023

A comprehensive review of all the related investigations carried on water jet cutting or AWJ (AWJ) cutting is performed. The experimental methods and results used on this subject were examined, defined and compared by the researchers. This research shows that further improvements are possible in the water jet cutting method. In order to reduce the high cost of the empirical technique and increase the time efficiency, it is important to perform computerized Finite Element Analysis (FEA) or Computational Fluid Dynamics (CFD) based AWJ processing. An attempt has been performed to systematically arranged the research investigations conducted on water jet cutting. The studies on the definition of the nozzle failure, calculate using CFD of water jet cutting or AWJ cutting processes, the studies on the parameters influencing water jet cutting are reviewed and the future work for the further improvement of water jet cutting process is highlighted.
Comparison of Adaboost Application to C4.5 and C5.0 Algorithms in Student Graduation Classification
Authors: Crismayella Yuveinsiana , Satyahadewi Neva , Perdana Hendra
Published: April 2023

Students become a benchmark used to assess quality and evaluate college learning plans. Therefore, students who graduate not on time can have an effect on accreditation assessment. The characteristics of students who graduate on time or not on time in determining student graduation can be analyzed using classification techniques in data mining, namely the C4.5 and C5.0 algorithms. The purpose of this study is to compare the application of the Adaboost Algorithm to the C4.5 and C5.0 Algorithms in the classification of student graduation. The data used is the graduation data of students of the Statistics Study Program at Tanjungpura University Period I of the 2017/2018 Academic Year to Period II of the 2022/2023 Academic Year. The analysis begins by calculating the entropy, gain and gain ratio values. After that, each data was given the same initial weight and iterated 100 times. Based on the classification results using the C5.0 Algorithm, the attribute that has the highest gain ratio value is school accreditation, meaning that the school accreditation attribute has the most influence in the classification of student graduation. The application of the Adaboost Algorithm to the C5.0 Algorithm is better than the C4.5 Algorithm in classifying the graduation of students of the Untan Statistics Study Program. The Adaboost algorithm was able to increase the accuracy of the C5.0 Algorithm by 12.14%. While in the C4.5 Algorithm, the Adaboost Algorithm increases accuracy by 10.71%.
Penerapan Logika Fuzzy Metode Mamdani Untuk Menentukan Jumlah Produksi Ayudes (Studi Kasus: CV. Abadi Tiga Mandiri Ambon)
Authors: Rumalowak Diana , Lesnussa Yopi Andry , Rumlawang Francis Yunito
Published: April 2023

A company does not see a problem, namely level competition. This competition is for companies to be able to provide a marketing or productivity strategy in order to survive and even have to increase their production volume. Because the estimated number of products produced is less than the number of requests, the company will lose the opportunity to get maximum and somewhat profit. Therefore, what needs to be considered in deciding the total of production is the total of demand and supply date. Writing and discussion in this study is about the application of the Logic Fuzzy Method Mamdani (Min-Max) to determine the total of production based on the total of demand and supply where the data is taken from CV. Abadi Tiga Mandiri Ambon and by applying the fuzzy logic method mamdani and Matlab assistance obtained results with a truth level of 93,238%. So that the application of Mamdani's Fuzzy Logic Method can help companies determine the number of items that must be made.
Micro cenários das políticas culturais da Bahia
Authors: ARAÚJO Leandro Alves de
Published: April 2023

Sandro Magalhães possui graduação em Letras Vernáculas pela Universidade do Estado da Bahia (2010), especialização em Estudos Culturais, História e Linguagens (2012) pela UNIJORGE e Pós-Graduação em Gestão Cultural pelo SESC/MINC...
O passado na obra de Cecília Meireles
Authors: NUNES Helen Ferreira
Published: April 2023

A poesia de Cecília Meireles tem por excelência um olhar voltado para o passado. O presente artigo pretende contribuir com um aprofundamento sobre a temática do tempo, especificamente o passado, principalmente no que se refere à relação eu/tu demarcada nos poemas cecilianos. De acordo com João Adolfo Hansen, sua poética retoma este passado cuja tensão entre a memória e a imaginação circunda a enunciação, pois o passado não é propriamente portador de lembranças, mas sim de imaginações. Assim, segundo o autor, o passado na poesia de Cecília Meireles possui um caráter mais ficcional. Alguns comentários sobre poemas vinculados à teoria sobre o tempo de Paul Ricoeur e outros pensadores farão parte deste trabalho. O olhar sobre o perdido, sobre o que se teve ou imaginou com perfeição, sobre o passado que foi amado deixa marcas de ausência no presente.
[Recebido: 8 set. 2015 – Aceito: 16 nov. 2015]
Ateliês autobiográficos
Authors: SILVA Gislene Alves da
Published: April 2023

O texto que ora exponho tem como pretensão apresentar o processo metodológico desenvolvido na pesquisa de mestrado intitulada, Narrativas autobiográficas de escritoras de Alagoinhas: Processos de (auto)formação e (re)significação. Este estudo foi desenvolvido na perspectiva da pesquisa­ação e do método (auto)biográfico para a coleta e análise de dados. Para tanto, nos inspiramos, em parte, no projeto desenvolvido pela pesquisadora Christine Delory-Momberger (2006), com os ateliês autobiográficos, que podem ser entendido como um espaço de formabilidade onde se “registram a ‘história de vida’ emuma dimensão prospectiva, unindo as três dimensões da temporalidade, e visa a dar as bases para o futuro do sujeito e fazer emergir seu projeto pessoal” (DELORY, 2006, p. 99). Assim, colhemos os escritos autobiográficos, produzidos nos ateliês autobiográficos, das escritoras de Alagoinhas, Luzia Senna e Margarida Souza, que participaram desta pesquisa, bem como fizemos as entrevistas narrativas.
[Recebido: 11 set. 2015 – Aceito: 7 nov. 2015]
VARIASI KONSENTRASI EMULGATOR SPAN-TWEEN 80 PADA FORMULASI KRIM BODY SCRUB EKSTRAK ETANOL DAUN SIRIH MERAH (Piper crocatum Ruiz & Pav)
Authors: Sopianti Densi Selpia
Published: April 2023

Senyawa flavonoid dapat bersifat sebagai antioksidan yang mampu berperan untuk peremajaan kulit seperti yang terkandung dalam daun sirih merah (Piper crocatum Ruiz & Pav) yang diformulasi dalam bentuk sediaan krim body scrub. Krim yang baik dapat dilihat dari stabilitas sifat fisik emulsi. Sifat emulgator yang baik yaitu mampu membentuk komposisi emulsi minyak dalam air (M/A) yang stabil. Oleh sebab itu tujuan penelitian ini untuk mengetahui konsentarsai pada formulasi berapa yang paling stabil dari variasi konsentarsi emulgator Span-Tween 80 pada formulasi krim body scrub ekstrak etanol daun sirih merah (Piper crocatum Ruiz & Pav). Metode ekstraksi daun sirih merah menggunakan metode maserasi dengan pelarut etanol 96%. Sediaan krim body scrub dari ekstrak daun sirih merah (Piper crocatum Ruiz & Pav) dibuat tiga variasi konsentrasi emulgator span-tween 80 yaitu : 1%, 3%, 5% lalu dievaluasi fisik dan kimia meliputi uji organoleptis, uji homogenitas, uji pH, uji viskositas, uji daya lekat, uji daya sebar, uji tipe krim, uji hedonik dan uji iritasi. Hasil penelitian menunjukkan bahwa dari hasil evaluasi ketiga variasi konsentrasi emulgator span-tween 80 1%, 3%, 5% diperoleh krim body scrub ekstrak etanol daun sirih merah yang paling baik adalah formula 3 dengan konsentrasi span-tween 80 5% yang memenuhi semua syarat ke stabilas krim body scrub terbaik
SIGNIFICANTLY STRONG EXPRESSION OF STAT6 AND SSTR2A IN DIFFERENTIATE THE SOLITARY FIBROUS TUMOR / HEMANGIOPERICYTOMA (SFT/HPC) AND MENINGIOMA
Authors: Bagus setiawan Bela
Published: April 2023

Background: Solitary fibrous tumor / hemangiopericytoma (SFT / HPC) and fibroblastic types of meningioma have similarities that is difficult to distinguish based on histology. Immunohistochemistry of STAT6 and SSTR2A are definitive biomarkers in both tumors. Inversion-mediated fusions between two genes, NAB2 and STAT6, were detected in SFT / HPC that inducES proliferation in cells. The somatostatin receptor (SSTR) 2 is located on chromosome 17q25.1 which is expressed diffusely in meningiomas.

Objective: This study aimed to determine the expression of STAT6 and SSTR2A in SFT/HPC and meningiomas.

Methods: An analytical observational study with consecutive sampling on 64 samples diagnosed with SFT/HPC and meningioma. Samples divided into 3 groups, group 1 consisted of grade I meningoma, group 2 consisted of grade II and III meningioma and group 3 consisted of solitary fibrous tumor/Hemangiopericytoma (SFT/HPC).

Results: Based on the Mann Withney comparative test, STAT6 expressions showed significant differences in group 1 and 3, as well as group 2 and 3 (P < 0.05).  SSTR2A expressions in group 1 and 3, as well as group 2 and 3 also showed significant differences (P < 0.05).

Conclusion: Immunohistochemistry of STAT6 and SSTR2A is strongly expressed in SFT/HPC and meningioma.

Keywords: Meningeal solitary fibrous tumor (SFT)/hemangiopericytoma (HPC), Meningioma, STAT6, SSTR2A.
Framing the Framework: Four Decades of Change in Language Teaching (and the Long March of ELF)
Authors: Newbold David
Published: April 2023

In questo articolo rifletto sui cambiamenti nell’uso della lingua nel corso di oltre quattro decenni, che hanno portato a una versione rivista del Quadro Comune Europeo di Riferimento per le Lingue (QCER), il Volume Complementare pubblicato nel 2018, che a sua volta continuerà probabilmente a promuovere cambiamenti nell’insegnamento e nella valutazione delle lingue per i decenni a venire. L’apparizione del ‘livello soglia’ del Consiglio d’Europa nel 1976, divenuto poi B1 nel QCER a sei livelli, ha annunciato una nuova attenzione alla comunicazione per i professionisti dell’insegnamento delle lingue. L’era dell’audio-linguismo era passata, lasciando il posto alla rivoluzione comunicativa e alla sua attenzione al ‘linguaggio reale’ e ai ‘materiali autentici’. Nel Quadro rivisto questo approccio si è modificato per riflettere i cambiamenti negli stili di vita e il progresso tecnologico nel nuovo millennio. Non ci si concentra più sulla preparazione degli studenti a comunicare con i madrelingua, ma sul plurilinguismo e sull’inclusione; la scala unica dei descrittori per la fonologia è stata sostituita da tre scale, nessuna delle quali si riferisce alla vicinanza di un accento nativo, e, forse più significativamente, ci sono scale completamente nuove per l'interazione online. Darò uno sguardo critico a questi cambiamenti e alle loro implicazioni per gli insegnanti, con particolare riferimento allo sviluppo dell’inglese come lingua franca. Si tratta di quattro decenni di cambiamenti che hanno fatto da sfondo alla carriera di Carmel in prima linea nella ricerca sull’insegnamento delle lingue.
Study of the evolution of the structural-phase state of W – Cu alloy samples in a graphite shell during vacuum annealing and exposure to high-temperature plasma
Authors:   JSC “Kompozit”, Vagin V. P. , Manokhin S. S. ,   Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS, Gusakov М. S. ,   JSC “Kompozit”, Surikov Е. V. ,   Central Institute of Aviation Motors (CIAM), Yanovsky L. S. ,   Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS (IPCP RAS),   Central Institute of Aviation Motors (CIAM), Kondratiev D. М. ,   JSC “Kompozit”, Kolobov Yu. R. ,   Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry RAS (IPCP RAS)
Published: April 2023

The change in porosity during isothermal vacuum annealing of the pseudo alloy W – 18 wt. % Cu obtained by powder metallurgy methods in the temperature range of 800 – 1200 °C and the resistance to oxidation under the action of high-temperature plasma of the outer surface of a hybrid laboratory structure, consisting of two composite elements made of dissimilar materials: graphite and alloy W – 18 wt. % Cu. The process of evolution of the microstructure controlled by diffusion along the internal interfaces (grain and subgrain boundaries) of copper atoms from copper particles located on these surfaces in the near-surface layers of the sample has been studied.
Sustainability research continuous rolling process
Authors:   Tver State Technical University, Brovman T. V.
Published: April 2023

The stability of the workpiece during rolling depends on the compression stresses and the duration of the stresses. At low rolling speeds, creep deformation plays an important role. The influence of the accuracy of the shape of the workpiece and the location of the rolls and wires on improving the reliability of the mill is shown.
Dynamic strength of fine-grained alumina ceramics obtained by Spark Plasma Sintering
Authors:   National Research Lobachevsky State University of Nizhny Novgorod, Melekhin N. V. , Boldin M. S. ,   National Research Lobachevsky State University of Nizhny Novgorod, Popov А. А. ,   National Research Lobachevsky State University of Nizhny Novgorod, Bragov А. M. ,   National Research Lobachevsky State University of Nizhny Novgorod, Filippov А. R. ,   National Research Lobachevsky State University of Nizhny Novgorod, Shotin S. V. ,   National Research Lobachevsky State University of Nizhny Novgorod, Murashov A. A. ,   National Research Lobachevsky State University of Nizhny Novgorod, Nokhrin A. V. ,   National Research Lobachevsky State University of Nizhny Novgorod, Chuvil’deev V. N. ,   National Research Lobachevsky State University of Nizhny Novgorod, Tabachkova N. Y. ,   National Research Lobachevsky State University of Nizhny Novgorod,   Prokhorov General Physics Institute of the Russian Academy of Sciences
Published: April 2023

The results of dynamic compressive testing of alumina samples with different grain sizes sintered from nano and fine α-Al2O3 powders are presented. The ceramics were obtained by spark plasma sintering (SPS). The effect of heating rate (Vh), sintering temperature (Ts), holding time (ts), cooling rate (Vc) on hardness, fracture toughness, dynamic strength stress (σY) of Al2O3 has been studied. An amorphous layer of nanometer thickness was present on the surface of nanopowders in the initial state. After sintering, the grain boundaries of the ceramics had a crystalline structure; no inclusions of the amorphous phase were found. It has been suggested that during the SPS process, an amorphous structure containing an excess free volume is transformed into a crystalline phase with the formation of dislocation-type defects at the grain boundaries, which create long-range internal stress fields. It is shown that nanopores less than 50 – 100 nm in size are present at the grain boundaries of sintered ceramics. It is shown that the nonmonotonic nature of the dependence of σY on the temperature and time of the SPS is due to the simultaneous change in the density, the nonequilibrium state of the grain boundaries, and the grain size of the ceramic. It is shown that a decrease in the degree of nonequilibrium of the grain boundaries of alumina due to an increase in the SPS temperature or an increase in the holding time makes it possible to increase the dynamic strength of alumina. It has been established that an increase in the cooling rate leads to the formation of compressive residual stresses and a slight increase in σY of ceramics. The maximum dynamic strength (σY = 1755 MPa) for alumina ceramics with average grain size 1.6 – 2 µm obtained by SPS (Vh = 50 °С/min, Ts = 1520 °С, ts = 50 min).
The influence of the structure of azo compounds on the deposition process and the quality of copper coatings on Anodized aluminum alloys
Authors:   Federal State Budgetary Educational Institution of Higher Education “R.E.Alekseev Nizhny Novgorod State Technical University”, Devyatkina T. I. , Taranets R. V. ,   Federal State Budgetary Educational Institution of Higher Education “R.E.Alekseev Nizhny Novgorod State Technical University”, Rogozhin V. V. ,   Federal State Budgetary Educational Institution of Higher Education “R.E.Alekseev Nizhny Novgorod State Technical University”, Isaev V. V. ,   Federal State Budgetary Educational Institution of Higher Education “R.E.Alekseev Nizhny Novgorod State Technical University”
Published: April 2023

A comparative analysis of the influence of the structure of azo compounds (on the example of methyl red (MKR) and nitroso-p-salt (NRS)) was carried out during copper plating of anodized aluminum alloys, on the microstructure, micro-roughness and quality of deposited copper coatings. It is shown that the choice of azo dye significantly depends on the charge of the surface of the oxide film in the solutions used. It is shown that the dyes used should have at least two functional groups in their composition, one of which should ensure the formation of complexes with copper ions, and the other – their adhesion to the surface of the oxide film due to the forces of electrostatic interaction. The adsorption of azo compounds changes the structure of the double electric layer at the film – electrolyte interface, which affects the speed of the copper plating process. At the same time, the mobility of the formed complexes in the adsorption layer increases, which leads to a better opening of the film surface. The studied indicators (dyes) positively affected the structure of the copper coating (eliminated defects and made it fine-crystalline), and also significantly smoothed the surface of the copper coating. The advantage of using the NRS over the MKR was revealed, which allowed not only to obtain a high-quality coating, but also to significantly intensify the copper plating process. A new composition of copper sulfuric acid electrolyte for coating anodized aluminum alloys at elevated cathode current densities with preservation of fine-crystalline structure and smoothed surface is proposed.
Traditional and new approaches to the creation of biomedical materials based on polyhydroxyalkanoates with antimicrobial activity
Authors:   Plekhanov Russian University of Economics, Tyubaeva P. M. ,   Institute of Biochemical Physics named after N.M.  Emanuel of the Russian Academy of Sciences, Popov A. A. ,   Institute of Biochemical Physics named after N.M. Emanuel of the Russian Academy of Sciences,   Plekhanov Russian University of Economics, Olkhov A. A. ,   Plekhanov Russian University of Economics,   Institute of Biochemical Physics named after  N.M. Emanuel of the Russian Academy of Sciences
Published: April 2023

This thematic review considers the principles of creating biomedical materials based on biopolymers and their compositions for various medical needs. The direction of creating materials with antimicrobial activity is especially emphasized using the example of polyhydroxyalkanoates. These biopolymers and composites based on them occupy leading positions in the production of medical devices. Polyhydroxyalkanoates as a class of biopolymers, as well as polyhydroxybutyrate, the most suitable representative of this class for biomedical products, were analyzed from the point of view of increasing resistance to microorganisms. Progress in this direction has been reported in recent years. The influence of the supramolecular and molecular structure of materials on the ability to biodegrade in the environment and in a living organism is considered in sufficient detail. The advantage of mixtures of biopolymers for achieving high degradation rates compared to the original polymers was noted. Promising antiseptics based on porphyrin metal complexes in combination with biopolymer nonwoven fibrous matrices have been demonstrated. Features of preclinical tests of antiseptic materials are considered. Based on this review of research papers, it can be concluded that the structural organization of a polymeric material or composite determines the level of intermolecular interactions during the formation of the material and thereby programs the complex of functional properties and the degradation mechanism under the influence of aggressive external factors.
Technology and properties of high-temperature piezoceramic materials based on phases of the system (1 – у)(Bi0.8Ba0.2)Fe0.8Ti0.2O3 – у(Ba0.85Ca0.15)Ti0.90Zr0.10O3
Authors:   Federal State Autonomous Educational Institution of Higher Education “Southern Federal University”, Faculty of Chemistry, Department of General and Inorganic Chemistry, Nesterov А. A. , Tolstunov M. I. ,   Federal State Autonomous Educational Institution of Higher Education “Southern Federal University”, Faculty of Chemistry, Department of General and Inorganic Chemistry,   FSBI Federal Research Center Southern Scientific Center of the Russian Academy of Sciences
Published: April 2023

In technology, using as precursors Fe(III) and Bi(III) nitrates, peroxo-nitrate complexes Ti(IV) and Zr(IV), as well as barium and calcium hydroxides, ultrafine powders of the (1 – у)Bi0.8Ba0.2Fe0.8Ti0.2O3 – уBa0.85Ca0.15Ti0.9Zr0.1O3 (у = 0,05 – 0,30). To reduce the electrical conductivity of ceramic samples made from these powders, the basic phases were alloyed with manganese compounds. To increase the d33 values of the piezoelectric elements, as well as to increase their operating temperature, a special sintering regime involving air hardening of the ceramic samples was used. The best samples of piezoceramics produced by the proposed technology have a Curie temperature above 550 °C and longitudinal piezoelectric modulus (standard conditions) values d33 ≥ 125 pC/N and their operating temperature reaches 340 – 350 °C.
Synthesis and catalytic activity of highly dispersed solid solutions Ce0,9Sn0,1O2 and Ce0,8Sn0,1Zr0,1O2 in CO oxidation
Authors:   Dmitry Mendeleev University of Chemical Technology of Russia, Simakina E. A. , Liberman E. Y. ,   Dmitry Mendeleev University of Chemical Technology of Russia, Kleusov B. S. ,   State Research Institute of Graphite — Based Structural Materials, Kon’kova T. V. ,   Dmitry Mendeleev University of Chemical Technology of Russia, Grunskii V. N. ,   Dmitry Mendeleev University of Chemical Technology of Russia, Morozov A. N. ,   Dmitry Mendeleev University of Chemical Technology of Russia, Denisenko A. V. ,   Dmitry Mendeleev University of Chemical Technology of Russia
Published: April 2023

Fluorite-like solid solutions of Ce0.9Sn0.1O2 and Ce0.8Sn0.1Zr0.1O2 are synthesized by co-precipitation using ammonium carbonate as a precipitant. The samples were characterized by X-ray phase analysis, electron microscopy, energy dispersive analysis, low-temperature nitrogen adsorption, and gas chromatography. It is shown that the formation of solid solutions occurs even at an annealing temperature of 550°C. In this case, the formation of lamellar particles occurs, the size of which, according to SEM data, is 4 μm. The synthesized materials have a mesoporous structure. The specific surface area of Ce0.9Sn0.1O2 samples is 80.6  m2/g, Ce0.8Zr0.1Sn0.1O2 is 76.3 m2/g. Carrying out the calcination at a temperature of 800 °C leads to an increase in the particle size up to 8 – 10 µm. The highest specific surface area of 15.3 m2/g is typical for the Ce0.8Zr0.1Sn0.1O2 sample, which is due to the presence of zirconium ions in its composition. The synthesized compositions demonstrated high activity in CO oxidation. The maximum catalytic activity was observed for the bicomponent system Ce0.9Sn0.1O2: T50% — 180°C, T90% — 236 °C. For samples calcined at a temperature of 800 °C, the most active is Ce0.8Zr0.1Sn0.1O2, which is due to the formation of a more thermally stable system compared to cerium dioxide and Ce0.9Sn0.1O2. To increase the thermal stability, it is advisable to dope the bicomponent composition Ce0.9Sn0.1O2 with Zr+4 ions.
Conocimiento profesional de profesores universitarios en un estudio de aula sobre cálculo
Authors: Richit Adriana , Ponte João Pedro da , Richit. Luiz Augusto
Published: April 2023

La investigación, guiada por la pregunta “¿Qué conocimiento profesional se moviliza en un estudio de aula realizado con profesores universitarios que enseñan Cálculo Diferencial e Integral?”, involucró a ocho profesores de instituciones de enseñanza superior del sur de Brasil que se dedican a la formación de futuros profesores de Matemática en la educación básica. El estudio de clase, estructurado en doce encuentros semanales, abordó el tema de “Máximos y Mínimos”. El análisis cualitativo mostró que el enfoque y la dinámica del estudio de aula movilizaron y permitieron profundizar en conocimientos profesionales relativos a las Matemáticas, a la Didáctica de las Matemáticas y a la misión del formador de futuros profesores de Matemáticas.
Mediaciones realizadas a estudiantes de segundo de primaria en una tarea de generalización
Authors: Narváez Orellana Romina , Cañadas Santiago María C.
Published: April 2023

El estudio se desarrolla en el ámbito del pensamiento algebraico en educación primaria. Trabajamos con seis estudiantes de segundo de educación primaria (7-8 años) una tarea de generalización durante entrevistas semiestructuradas individuales. Nos centramos en las mediaciones del investigador-docente que guio dichas entrevistas. Se pretende describir la generalización de los estudiantes antes y después de las mediaciones realizadas. Los resultados destacan que, al finalizar las entrevistas, los seis estudiantes generalizaron algunos de forma correcta y otros de forma incompleta. Identificamos que las mediaciones tuvieron un rol fundamental para la identificación de la regularidad de la tarea planteada, permitiéndoles corregir errores y justificar.
Una aproximación operativa al diagnóstico y la evaluación de la comprensión del conocimiento matemático

Authors: Gallardo Jesús , González José Luis
Published: April 2023

La comprensión del conocimiento matemático constituye un objeto de investigación de interés creciente en educación matemática. No obstante, su elevada complejidad hace que los avances más recientes aún resulten insuficientes y reclama la necesidad de ir adoptando enfoques más operativos y menos preocupados por el estudio directo de sus aspectos internos. En tal sentido, se presentan aquí las bases de una aproximación centrada en los efectos observables de la comprensión, que utiliza el análisis de comportamientos y respuestas adaptadas a situaciones expresamente planificadas derivadas del análisis fenómeno-epistemológico del conocimiento matemático. La operatividad de la propuesta se ilustra con el estudio realizado sobre el algoritmo estándar escrito para la multiplicación de números naturales. An Operative Approach to Diagnosing and Assessing Mathematical Knowledge Understanding Understanding mathematics has recently became a research topic of increasing interest in mathematics education. However, its high complexity makes to be insufficient the most recent advances and demands to be adopted more operative and less interested about its internal properties approaches. Therefore, the principles of an approach based on the observable effects of understanding mathematics are exposed here, one of which refers to the individual behaviours and answers analysis when facing to specifically prepared situations derived from the phenomenon-epistemological analysis of concrete mathematical knowledge. The operativity of the proposal is also illustrated with some examples related to a study we have carried out on understanding the written standard algorithm for the multiplication of natural numbers.Handle: http://hdl.handle.net/10481/4702Nº de citas en WOS (2017): 5 (citas de 2º orden, 16)Nº de citas en SCOPUS (2017): 1 (citas de 2º orden, 0)
Learning within communities of practice in pre-service secondary school teachers education

Authors: Gómez Pedro , Rico Luis
Published: April 2023

We present the main features of a study that explored the learning processes of a group of preservice mathematics teachers in a methods course. We discuss the implications of using the communities of practice perspective in designing and developing teacher training programs. Aprendizaje en la formación inicial de profesores de educación secundaria desde la perspectiva de las comunidades de prácticaEn este estudio exploramos los procesos de aprendizaje de un grupo de futuros profesores de matemáticas en una asignatura de formación inicial. Discutimos las implicaciones de utilizar la perspectiva de las comunidades de práctica para el diseño y desarrollo de planes de formación de profesores.Handle: http://hdl.handle.net/10481/4445Nº de citas en WOS (2017): 1 (Citas de 2º orden, 0)Nº de citas en SCOPUS (2017): 1 (Citas de 2º orden, 0)
Análisis didáctico y formación inicial de profesores: competencias y capacidades en el aprendizaje de los escolares

Authors: Lupiáñez José Luis , Rico Luis
Published: April 2023

Describimos aquí parte de una investigación en la que se analiza el proceso de reflexión que realizaron los estudiantes de último año de Matemáticas sobre cuestiones profesionales relativas a la enseñanza de las matemáticas, que surgieron durante sus prácticas de enseñanza. Caracterizamos la reflexión de los estudiantes a partir de una serie de dimensiones: ideas y creencias, autoridad, consideración del contexto, situaciones problemáticas y uso del conocimiento. En este artículo trataremos el modo en que los estudiantes usaron el conocimiento profesional cuando tuvieron que impartir una clase a sus compañeros sobre la cuestión profesional ¿Cómo evaluar un ejercicio/examen? Using Professional Knowledge in Reflection Processes in Initial Secondary Teachers Training We describe part of a research study in which we analyzed the process of reflection of last year mathematics students. This reflection process is based on professional questions about mathematics teaching which emerged during their teaching practice. We characterize students´ process of reflection by using a set of dimensions: ideas and beliefs, authority, context consideration, problematic situations and use of knowledge. In this article we focus on how students used professional knowledge when they had to teach a lesson to their partners about the professional question How to evaluate a task/test?Handle: http://hdl.handle.net/10481/4219Nº de citas en WOS (2017): 7 (Citas de 2º orden, 3)Nº de citas en SCOPUS (2017): 2 (Citas de 2º orden, 3)
Las igualdades incorrectas producidas en el proceso de traducción algebraico: un catálogo de errores

Authors: Cerdán Fernando
Published: April 2023

Propongo un catálogo para los errores que puedan encontrarse al realizar el proceso de traducción algebraico. El catálogo consta de tres categorías: errores en el uso de letras, errores en la construcción de expresiones algebraicas y errores en la construcción de la igualdad. Constaté la validez del catálogo con las igualdades incorrectas producidas por 258 estudiantes de bachillerato que trabajaron 13 problemas. Encontré que las producciones persistentes dan cuenta de una parte sustantiva del error total y que estas producciones contienen errores de las categorías antes citadas. Además, determinados errores se podrían asociar con tipos de problemas. Incorrect equalities developed in the algebraic translation process: a catalog of errors We propose a catalogue for errors that can be found in the process of algebraic translation. This catalogue consists of three categories: errors in the use of letters, errors in the construction of algebraic expressions and errors in the construction of the equal sign between two algebraic expressions. We contrasted the utility of the catalogue with the incorrect equalities produced by 258 students aged between 15 and 18. Finally, we found that a great part of the total error can be explained by means of persistent productions in which we can find errors belonging to the three categories of the catalogue. Furthermore, it is possible to conclude that some kinds of errors were related to specific types of problems.Handle: http://hdl.handle.net/10481/3499Nº de citas en WOS (2017): 7 (Citas de 2º orden, 9)Nº de citas en SCOPUS (2017): 3 (Citas de 2º orden, 4)
A sociocultural framework for understanding technology integration in secondary school mathematics

Authors: Goos Merrilyn
Published: April 2023

This paper proposes a theoretical framework for analyzing relationships between factors influencing teachers’ use of digital technologies in secondary mathematics classrooms. The framework adapts Valsiner’s zone theory of child development to study teacher learning in terms of the interaction between teacher knowledge and beliefs, professional contexts and professional learning experiences. Use of the framework is illustrated by case studies of an early career teacher and an experienced teacher. Un marco sociocultural para comprender la integración de la tecnología en las matemáticas escolares de secundaria Este artículo propone un marco conceptual para analizar las relaciones entre los factores que afectan al uso que el profesor hace de las tecnologías digitales en el aula de matemáticas de secundaria. Este marco adapta la teoría de Valsiner sobre el desarrollo del niño para estudiar el aprendizaje del profesor en términos de la interacción entre el conocimiento y las creencias del profesor, los contextos y las experiencias profesionales de aprendizaje. La puesta en práctica de este marco conceptual se ilustra con estudios de caso de un profesor novel y un profesor experimentado.Handle: http://hdl.handle.net/10481/4980Nº de citas en WOS (2017): 1 (Citas de 2º orden, 0)Nº de citas en SCOPUS (2017): 1 (Citas de 2º orden, 0)
Hidden Treasures: The Library Special Collections at Highland Theological College UHI
Authors: Cryle Geordie , Stirling Mark D.
Published: April 2023

This paper details the library special collections material held at the library of Highland Theological College, University of the Highlands and Islands. Our three primary special collections are the focus of this article, The William Temple Collection, The Rutherford House Collection, and the Fort Augustus Collection. We detail here the story behind these collections entering our custody and proceed to highlight a selection of monographs of provenance and personal interest. This paper constitutes original research into the collections, building upon a foundation laid by the late college librarian, Mr. Martin Cameron, (1953-2019) who curated the collections over some twenty years. We also discuss the curation two new collections – The Liturgical Music Collection, comprising sheet music and musical sources from the Fort Augustus Collection, and the Historical Texts Collection, comprising the library’s oldest books of academic interest.
The Association between Antiphospholipid Syndrome after Conventional Treatment and Preeclampsia
Authors: Yang Tian , Peng Hongling
Published: April 2023

Background: Despite conventional treatment, the prognosis of antiphospholipid syndrome (APS) pregnancy remains poor, and some pregnancies are still complicated by preeclampsia (PE). This study aimed to identify the relationship between conventionally-treated APS and the onset of PE. Methods: Relevant studies published up to April 2021 were searched on the PubMed, Cochrane Library, and Embase databases. Related data were extracted from the included studies, and we performed a meta-analysis. Review Manager 5.4 were used to calculate the pooled odds ratio (OR) and 95% confidence intervals (CIs). Results: This study screened 6 studies, including 1 cohort study and 5 case-control studies. Even after conventional treatment, the rate of PE in APS pregnancy is still significantly higher than in the control group. There was a higher pooled OR in the cohort study (OR: 8.37, 95% CI: 3.42–20.48) than the case-control studies (OR: 2.30, 95% CI: 1.12–4.74) in the subgroup analysis. Conclusions: APS pregnancy increases the risk of PE even after conventional treatment. Routine monitoring and standardized and better treatment methods should be developed to prevent the occurrence of PE.
Neoadjuvant Chemo-Endocrine Therapy for Hormone Receptor Positive Breast Cancer: A Meta-Analysis
Authors: Li Zhen-Yu , Dong Ying-Li , Cao Xiao-Zhong , Ren Sha-Sha , Zhang Zhen
Published: April 2023

Background: Neoadjuvant chemotherapy has become the standard treatment for patients with locally advanced breast cancer. However, patients with hormone receptor positive (especially human epidermal growth receptor 2 negative) breast cancer show low response rate to neoadjuvant chemotherapy. Whether neoadjuvant chemo-endocrine therapy (NCET) can improve the pathological complete response (pCR) rate of these patients remains controversial. Methods: A systematic literature search was conducted in the PubMed, Embase, and Cochrane databases. Pooled odds ratio (OR) with 95% confidence intervals (CI) was calculated. Results: Five randomized controlled trials were included (N = 566). NCET did not significantly improve pCR (OR 1.35, 95% CI 0.77–2.38, p = 0.30). Conclusions: NCET did not to improve the pCR rates in patients with hormone receptor positive breast cancer.