bluuebunny/crossref_metadata_2025_split huggingface dataset:
Transition secondaire-supérieur: Ce que nous apprend la recherche en didactique des mathématiques
Authors: Gueudet Ghislaine , Vandebrouck Fabrice 
Published: August 2022

This article presents a synthesis of international research in mathematics education about the secondarytertiary transition, with a specific interest in the most recent works. These studies may concern students' difficulties, and investigate different factors causing these difficulties: notions become more abstract, expected practices refer to those of mathematicians, the institutional culture changes. Some studies analyze more broadly the practices of teachers and students at the end of high school or at the beginning of post-secondary level. Research in mathematics education provides keys to understanding current practices and their consequences, whether in ordinary courses or in teaching device specially designed to improve the transition from secondary to tertiary education. In some cases, it also proposes innovative courses fostering active student involvement, and highlights the benefits of these courses. The development of initial and in-service training for university teachers could help extend such teaching beyond experimental contexts.
Cet article présente une synthèse de travaux de recherche internationaux en didactique des mathématiques à propos de la transition secondaire-supérieur, avec un intérêt spécifique porté aux travaux les plus récents. Ces travaux peuvent concerner les difficultés des étudiants, et en donner diverses interprétations : les notions deviennent plus abstraites, les pratiques attendues se réfèrent à celles des mathématiciens, la culture institutionnelle change. Certaines études analysent plus largement les pratiques des enseignants et des élèves en fin de lycée ou étudiants au début du supérieur. La recherche en didactique des mathématiques donne des clefs pour comprendre l’existant, qu’il s’agisse de cours ordinaires ou de dispositifs spécialement conçus pour accompagner la transition secondaire-supérieur. Elle propose aussi dans certains cas des enseignements innovants qui permettent une implication active des étudiants, et met en évidence les apports de ces dispositifs. Le développement de la formation initiale et continue des enseignants de l’université pourrait contribuer à étendre de tels enseignements au-delà de contextes expérimentaux.
Classified Transformation from Proletariat to Precariat
Authors: Kınsün Salih , Kınsün Abdulbaki 
Published: August 2022

One of the strictest realities of social life is class structure. Therefore, Karl Marx based his analysis of social structure on the labour form of the class that constantly produces itself and its opponent. He speaks of a class structure based on material labour determined by means of production and production relations. This class is known as the proletariat. However, in this cycle, which progresses continuously on the axis of change and transformation, the class has become flexible and labour has moved away from its material state. In Marx's words, the solid has evaporated. In other words, the new social class that has adapted to the flexible life and labour process and was stuck between the continuous work and life changes is the precariat. The basis of the precariat class is not only the proletarian workers and their labour, but also their identity, colour, religious affiliations. Those who are outside the wall of equality aim to achieve the digital era and somehow their whole life has been cognitive, and they are living new fluid human's states resulting in alienation from their labour. In this study, the class transformation will be emphasized that Marx went through while evolving into precariat in the informatics society of the proletariat, which he put forward for the industrial society. The class transformation in question will be discussed in the context of Hard and Negri's class components and Guy Standing's precariat concept. This study will include the fluid course of class transformation. In addition to these, this study is important as it aims to analyze the contexts of human life, post-human and trans-human processes by including digitalization.
Estrategias de neurorehabilitación integral en síndrome de Down
Authors: Bran Girón Jorge Eduardo , López Barillas Mayda Azucena , Julian Leal Edna Anabella , García Solano Kenneth , Paz Sandoval Ana Gabriela , Pérez Cordova José Manuel 
Published: August 2022

OBJETIVO: describir las estrategias utilizadas de manera integral dirigidas para niños con síndrome de Down. MÉTODO: construcción teórica a partir de reflexiones RESULTADOS: la neurorehabilitación integrada para niños con síndrome Down se basan en aspectos neurobiológicos, genéticos, epigenéticos y neurocognitivos que se encargan de mejorar las dificultades en las funciones sensoriomotoras y ejecutivas del sistema nervioso CONCLUSIÓN: el síndrome de Down debe abordarse desde el punto de vista estratégico con disciplinas tales como: la neurología pediátrica, psicología, fisioterapia, terapia ocupacional, educación, trabajado social, terapia del habla y lenguaje que se encarguen de fomentar la tolerancia, inclusión y la integridad de los niños con trastornos del neurodesarrollo.
Impacto da atividade das estrelas na habitabilidade de exoplanetas
Authors: Valio Adriana 
Published: August 2022

O Sol e as estrelas apresentam atividade magnética na forma de manchas escuras em sua superfície, além de produzirem explosões e ejeções de massa de suas atmosferas. As assinaturas de manchas escuras na superfície das estrelas podem ser modeladas a fim de caraterizar seus tamanhos e temperaturas. Estrelas jovens e anãs M produzem energéticas superexplosões, as quais podem impactar os planetas em órbitas, principalmente os que estiverem bem próximos da sua estrela hospedeira. O fluxo de radiação ultravioleta destas explosões pode ser prejudicial para possíveis organismos vivos na superfície de exoplanetas orbitando na zona habitável de estrelas ativas. Entretanto, uma atmosfera com ozônio poderia protegê-los, ou então um oceano. Os ventos estelares também afetam as atmosferas planetárias, podendo ser responsáveis pela sua erosão.
BASAL LEVEL OF GENES EXPRESSION OF CINNAMIC ACID METABOLISM ENZYMES IN THE LEAVES OF IN VITRO PLANTS OF POTATOES VARIETIES OF BELARUSIAN BREEDING
Authors: KABACHEVSKAYA E. M. , GAPEEVA T. A. , SMIRNOV A. A. , MISYUKEVICH A. YU. , SUHOVEEVA S. V. , VOLOTOVSKIY I. D. 
Published: August 2022

The unique gene-specific primers were developed to assess the level of gene expression of cinnamic acid metabolism in potato leaf cells. The basal level of the relative gene expression of tyramine hydroxycynnamoyl transferase (THT) and cinnamate 4-hydroxylase (C4H) was estimated. The presence of correlations between the level of expression of the research genes and potatoes resistance to diseases such as late blight, rhizoctonia,
common scab, black leg is discussed.
THE YIELD OF POTATO VARIETIES WHILE MAINTAINING A FIELD COLLECTION IN THE NORTHERN REGION AND HIGHLANDS
Authors: OVES E. V. , GAITOVA N. A. 
Published: August 2022

The article studied the passage of interstage periods and the yield formation of tubers of 93 potato varieties with different ripening periods. The selection of base clones was carried out in northern and southern conditions of Primorsky District in Arkhangelsk Oblast and the highlands of the North Caucasus at an altitude of 2 300–2 500 m above sea level. The growth, development and formation of tubers was significantly influenced by the length of day in the northern region and long sunshine hours in the highlands. The multiplication coefficient of plants in the highlands increased by 1.2–2.3 times compared to the northern region, while the highest increase was observed in late-ripening varieties. The weight of tubers of the early and mid-early ripening varieties was exceeded
by 1.9–2.7 times compared with the northern region; the weight of the later period varieties was exceeded by 2.9–3.1 times.
POTATO SELECTIVE BREEDING FOR SUITABILITY FOR INDUSTRIAL PROCESSING FOR FOOD PRODUCTION
Authors: KOZHUSHKO N. S. , SAKHOSHKO N. N. , SMILYK D. V. 
Published: August 2022

At the Research Institute of Potato-breeding of Sumy National Agrarian University, using own potato varieties as basic forms, 23 promising hybrids were obtained according to the main economically valuable traits (yield – up to 50 t/ha, starch content – 22 %, starch yield – up to 8–10 t/ha). Based on the results of the technological assessment, 35 % of hybrids of the early and medium early ripening groups with a high (28–30 %) dry matter content and low (0.2–0.4 %) reducing sugars content turned out to be the most suitable for industrial processing into potato products. The potential maximum yield of dried potato production was up to 27.7 kg from 100 kg of raw materials, crispy – up to 44.4 kg, which is almost 20 and 10 % higher than the established quality standard. Providing the processing industry with high-quality raw materials in the early stages is one of the factors in increasing the efficiency of enterprises and unloading them in
the most stressful autumn period.
DETECTION OF VIRAL AND BACTERIAL INFECTIONS IN ORDER TO OBTAIN HIGH QUALITY INITIAL POTATO SEED MATERIAL
Authors: GUSCHA G. N. , RADKOVICH E. V. , SERDYUKOVA N. S. , HALIMONENKO Yu. A. , ANTSIPOVICH V. V. 
Published: August 2022

The article presents the research results on the selection of clones free from phytoinfection in original potato seed production. It is necessary to use a number of diagnostic tests that complement each other and allow the detection of a wide range of viral infections such as PVX, PVY, PVS, PVM, PLRV, PVA, TRV, PMTV, AMV, PSTV and bacterioses: Ralstonia solanacearum, Pectobacterium carotovorum subsp. Atrosepticum, Clavibacter michiganensis. Moreover, studies have shown the necessity
for TRV detection testing when selecting the initial ancestral material for introduction into the in vitro culture.
DEVELOPMENT OF METHODOLOGICAL BASE FOR STATE TESTING OF POTATO VARIETIES (SOLANUM TUBEROSUM L.) FOR DISTINCTNESS, HOMOGENEITY AND STABILITY IN THE REPUBLIC OF BELARUS
Authors: BEINYA V. A. , SEMASHKO T. V. 
Published: August 2022

The work analyzes the development of the state testing of potato varieties Solanum tuberosum L. for distinctness, homogeneity and stability (hereinafter – DHS) in the Republic of Belarus. In order to optimize the organization of state testing of potato varieties
for DHS, two patent examination stations were created at SAO «Molodechno Variety Testing Station» and SAO «Gorki Variety Testing Station»; two national testing methods for DHS, developed on the basis of UPOV guidelines, were systematically introduced into practice; national reference varieties were introduced; to ensure the correct definition of DHS criteria, a photo catalogue of the main identification features of potatoes and a national reference collection of well-known varieties have been created.
Antioxidant Activity of Cocoa Flavored Sterilized Milk Fortified with Whey Protein Hydrolysate Derived from Gastrointestinal Proteinases Digestion
Authors: Khongla Chompoonuch , Thongrongklang Watcharaphong , Sirisakwatthana Pichet , Sonsupab Ditpakorn , Mangkalanan Seksan , Musika Sumalee , Ranok Araya , Kupradit Chanida , Sangsawad Papungkorn 
Published: August 2022

The objectives of this work were to study the change in α-amino content and antioxidant activity of whey protein hydrolysate (WPH) using gastrointestinal proteinases (pepsin and pancreatin). In addition, whey protein hydrolysate powder (WPHP) with high antioxidant activity were produced by simulated GI digestion using an in vitro pepsin - pancreatin hydrolysis for supplementation in flavored milk. Whey protein was hydrolyzed with pepsin for 2 h followed by pancreatin for 3 h. WPH was collected to determine the α-amino content and antioxidant activity. The results showed that digested WPH contained higher α-amino content and antioxidant activity than undigested whey. To study optimum temperature, WPH was dried using Spray Dryer at 130, 140, and 150 °C. Results showed that WPHP at 150 °C exhibited the highest antioxidant activity with a major area peak of molecular weight around >12,000 - 990 Da (43.4 %) and 990 - 336 Da (23.7 %). WPHP at 150 °C was selected to supplement in Cocoa flavored sterilized milk (CFSM_WPHP). α-Amino content, antioxidant activity, and microbiological of CFSM_WPHP were investigated. CFSM_WPHP contained higher α-amino content and antioxidant activity than Control (without addition of WPHP). Total plate count, fecal coliform, and E. coli of CFSM_WPHP were under Notification of the Ministry of Public Health of Flavored milk. These results suggested that WPHP has the potential as nutritive and antioxidative supplementation for Cocoa flavored sterilized milk.
HIGHLIGHTS

Whey protein hydrolysate prepared by pepsin-pancreatin had antioxidant activity
At 150 ºC was the optimum drying temperature to produce WPH powder
WPH exhibited the molecular weight around >12,000-990 Da and 990 - 336 Da
Addition of WPH improved antioxidant activity of Cocoa flavored sterilized milk
WPH powder exhibited the potential of being used as a functional peptide

GRAPHICAL ABSTRACT
Synthesis and Characterization of Zinc Vanadate Nanostructures for Supercapacitor Applications
Authors: Ramavathu Lakshmana Naik , Tumma Balanarsaiah 
Published: August 2022

A simple hydrothermal approach was used to successfully produce nanostructured Zinc vanadate (Zn3V2O8), which was calcined at 450 ℃. The structural, optical and surface morphological features of calcined Zn3V2O8 nanoparticles were investigated using a variety of analytical techniques. The produced Zn3V2O8 nanoparticles had an orthorhombic crystalline structure, with an average crystallite size of 35.14 nm, according to the X-ray diffraction pattern (XRD). Transmission electron microscopy (TEM) analysis evaluated the spherical shaped Zn3V2O8 nanoparticles. The calcined catalyst was characterized by Fourier Transform-Infrared spectroscopy (FT-IR) analysis to analyse bonding interactions between the metal fragments within the composites. The nanoparticles obtained from hydrothermal synthesis were of size 37.2 nm, and the zeta-potential of nanoparticles was found to be −25.4 mV, indicating excellent dispersion and stability. The spectrophotometer was used to analyse the UV-Vis diffuse reflectance spectra (DRS). Cyclic voltammetry and electrochemical impedance spectroscopy were used to study the electrochemical behavior of Zn3V2O8 nanostructures. The specific capacitance value of the synthesized nanoparticles was 248.5 Fg−1. The active composite material was exploited as an electrode for the Supercapacitor application, and it revealed that synthesized Zn3V2O8 nanoparticles might lead to a possible application for future energy storage technologies.
HIGHLIGHTS

Zinc vanadate nanostructures have been prepared using easy and economical hydrothermal technique and are explored for supercapacitor application
Electrochemical behaviour of zinc vanadate nanostructures were investigated by cyclic voltammetry, electrochemical impedance spectroscopic analysis and galvano static charge discharge analysis
This zinc vanadate nanostructures exhibited a maximum specific capacitance of 248.5 F g−1 in the HCl electrolyte
It clearly revealed that synthesized nanoparticles may lead to potential application for forthcoming energy storage devices

GRAPHICAL ABSTRACT
Flooded Lead Acid Battery SOC Estimation for Energy Conscious LVDC Building: Warm and Humid Climate
Authors: Chacko Rani , Thevarkunnel Adarsh , Varghese Lakaparampil Zachariah , Thomas Jaimol 
Published: August 2022

Microgrids make it easier to integrate Renewable Energy Sources (RESs) and Energy-Storage Systems (ESSs) at the consumer level, with the intent of enhancing power quality, reliability, and efficiency. This microgrid concept at the nano grid level is championed by a low voltage DC (LVDC) grid, facilitating the direct integration of several distributed generators, storage and loads that are almost DC source/load. Since the State of Charge (SOC) of the battery is an essential parameter for building energy management systems, careful monitoring of SOC is essential. The SOC of a battery directly reflects its performance; thus, straightforward, reasonably accurate, and timely estimation of SOC protects against overcharging or discharging issues, with fewer processor requirements and computations. A novel SOC estimation method is proposed based on the literature assessment of different existing SOC estimation methods. In regions with a tropical climate, the temperature range over the year is small, and the sunshine is relatively intense and fairly even throughout the year. Also, for all practical purposes, it is a fact that the model that takes inputs at the point of use gives accurate results. Considering the 2 facts mentioned above, the current model uses a less complicated algorithm, within acceptable accuracy for the purpose and relatively user-friendly.
HIGHLIGHTS

State Of Charge (SOC) estimation of 48V Lead Acid battery for Low Voltage DC (LVDC) building energy management systems
Straightforward, reasonably accurate, and timely estimation of SOC which protects against overcharging or discharging issues, with fewer processor requirements and computations
For the SOC estimation, the open-circuit voltage is obtained by measuring the terminal voltage, current and first-order model of the battery developed under similar climatic condition
Development and testing of an algorithm incorporating temperature-independent first-order battery model for the tropical climate with lesser temperature variation

GRAPHICAL ABSTRACT
Geotecnia enfocada a cimentaciones de edificaciones de 3 pisos en la ciudad de Machala
Authors: Cabrera P. , Ordoñez J. , Carrión L. , Lima R. 
Published: August 2022

El presente estudio se realizó con el objetivo de obtener información geotécnica de parte de la zona sur-este de la ciudad de Machala, y en base a tal información definir la alternativa técnica adecuada de cimentación para una edificación de tres plantas del tipo residencial. Para el procedimiento de exploración del suelo se implementó la Norma Ecuatoriana de la Construcción NEC respecto a “Geotecnia y cimentaciones”, en la cual define que para una edificación de tres plantas y según las cargas de servicio es necesario analizar el suelo a una profundidad de 6m (NEC – 2015). El estudio tuvo en general una cobertura 160 Ha de superficie, se realizó en cuatro sectores: Ciudadela “San Ramón”, terreno en Avenida Colón Tinoco y Alejandro Castro Benítez, Ciudadela “García Guillen” y Lotización “Francisco Abad Vallejo”, se realizó una perforación en cada sector mencionado, formando los cuatro puntos de exploración un polígono, esto pretendiendo estimar la secuencia de los estratos de los sectores y definir una carta estratigráfica georreferenciada que sirva para prever el tipo de suelo existente en determinado punto dentro del polígono analizado.
La exploración se realizó con el equipo SPT, obteniendo muestras inalteradas durante la exploración y que fueron ensayadas en laboratorio. Los resultados del estudio de suelos presentaron que bajo estas zonas el terreno sería del tipo arcilloso, limoso, arenas finas, con rango de carga admisible entre 2 a 6 Ton/m2, nivel freático entre 1 a 2 m respecto al nivel del suelo natural. Por lo cual, fue necesario mejorar el suelo de soporte y para la cimentación se eligió definitivamente un sistema ortogonal de vigas de cimentación con zapatas de un metro.
Viabilidad de lactobacillus paracasei en co-cultivo con otras bacterias lácticas en leche descremada fermentada de cabra
Authors: Diaz Torres Raul , Llerena Ramírez Carmen , Chele Anzules Joffre , Hernández Monzón Aldo , Saona Borbor Ronald 
Published: August 2022

Introducción: La utilización de microorganismos para elaborar productos lácteos permite producir los cambios bioquímicos deseados. El objetivo fue evaluar la viabilidad de la bacteria probiótica Lactobacillus Paracasei en co-cultivo con Lactobacillus Bulgaricus y Streptococcus Thermophilus (cultivo BAL) a diferentes relaciones de inoculo en leche de cabra descremada. Materiales y Métodos: La leche fue pasteurizada (85 ºC, 30 minutos), enfriada hasta 40 °C e inoculada con una mezcla de cultivos de Lactobacillus Paracasei y BAL en proporción 9:1 ó 7:1. La leche inoculada fue incubada a 40 ºC y cada 30 minutos se midieron pH, acidez (grados Dornic), y recuento de bacterias probióticas (72 horas de incubación) para determinar los parámetros cinéticos de la fermentación. La viabilidad in vitro fue evaluada mediante la resistencia a la acidez (pH 2 y 3) y tolerancia a bilis de buey. Resultados: La leche recibida cumple los parámetros para su consumo. El descenso de pH fue independiente de la proporción de las mezclas de cultivo empleadas, con valor final de 4,6 y acidez final ligeramente superior al emplear la proporción 9:1. El recuento de bacterias probióticas fue superior a 108 UFC/mL, independientemente de la proporción utilizada, pero la viabilidad de bacterias fue superior al emplear la proporción 9:1. Para ambas proporciones se demostró la tolerancia a la bilis de buey, pero la proporción 9:1 resultó más tolerante a la acidez. Conclusiones: Se obtuvo una leche fermentada con un recuento de bacterias probióticas superior a 108 UFC/mL, capaz de superar las pruebas de viabilidad in vitro.
Notas para um passeio no parque de diversões com Dalton Trevisan e Katherine Mansfield
Authors: Funke Katherine 
Published: August 2022

O ser que escreve, por ser-assim, quer a liberdade de escrever sem responder a um projeto. Por ser-assim, se encontra, neste lado de fora do esperado, com outros que vieram antes e continuam seu estar-no-mundo, entre viventes e não-viventes. Neste inesperado lugar, este artigo constrói as bases de um parque de diversões, convidando para um passeio. Na roda-gigante, na montanha-russa e na sala de espelhos, estão Dalton Trevisan (1925- ) e Katherine Mansfield (1888-1923), acompanhados de uma comunidade de outros amantes de Mansfield, como Vinicius de Moraes, Clarice Lispector e Ana Cristina César. O mote do passeio são as ficções de Dalton dedicadas a Mansfield, iniciadas com uma (suposta) carta integrante do número 14 da revista Joaquim (1947). A versão mais recente do conto, que teve outras republicações, está em Até você, Capitu (2013), com significativas alterações.
KẾT QUẢ VI PHẪU THUẬT U GÓC CẦU TIỂU NÃO ĐƯỢC PHẪU THUẬT TẠI BỆNH VIỆN VIỆT ĐỨC
Authors: Huy Mạnh Bùi , Phùng Thành Lê , Duy Dương Tạ 
Published: August 2022

Kết quả vi phẫu thuật trên 60 bệnh nhân u GCTN: u thần kinh chiếm 34 bệnh nhân (56,6%), u màng não có 18 (30%). Tai biến sau mổ có: sốt 2BN, rò dịch não tuỷ 2 BN, liệt nửa người, giãn não thất, mỗi loại 1 bệnh nhân. Không có tai biến nặng, không có tử vong. Di chứng sau mổ 6 tháng gồm: liệt mặt 28,3%, liệt nửa người và máu tụ dưới màng cứng có 1 bệnh nhân. Tỷ lệ liệt chức năng dây thần kinh số VII ít hơn ở nhóm dùng hệ thống cảnh báo thần kinh NIM trong mổ. Kết quả chụp lại hết u 42 bệnh nhân (70%).