bluuebunny/crossref_metadata_2025_split huggingface dataset:
Problemáticas ambientales; pretexto para potenciar la argumentación científica en población infantil.
Authors: Valderrama Alejandro , Pedraza-Jiménez Yamile 
Published: April 2021

Se presenta una experiencia de aula fundamentada pedagógicamente en los cambios y exigencias ejercidas sobre la educación en ciencias naturales, por el contexto de la pandemia del SARS-CoV-2 y otras situaciones problemáticas que derivan de las relaciones entre el ser humano y el entorno natural. Se concretan dentro de las mismas la necesidad de fortalecer los procesos argumentativos en un grupo de estudiantes de quinto año de educación básica primaria, en una institución educativa de la ciudad de Tunja, Boyacá en Colombia, sobre los que se realiza un análisis del discurso centrado en niveles de argumentación medidos a lo largo de varias sesiones de clase. Se reconocen algunos avances en la incorporación de esta habilidad como objetivo educativo de diferentes áreas del conocimiento y se describe a su vez las potencialidades didácticas que la enseñanza contextual de las ciencias naturales, gestada mediante el uso de problemáticas ambientales, articuladas con los procesos de interpretación de las mismas, fundamentación conceptual y análisis multidimensional, deriva en procesos de discusión y confrontación de saberes que fortalecen la habilidad argumentativa permitiendo un proceso de enseñanza-aprendizaje de las ciencias naturales desde el protagonismo de los estudiantes. Se incentiva un ejercicio responsable de su ciudadanía y toma de decisiones frente al ambiente, desde una visión de la ética del menor daño y la responsabilidad social, económica y política que los ciudadanos poseen frente al equilibrio ambiental.
BARMAKY SITE IN THE CONTEXT OF EPIGRAVETTIAN OF THE MIDDLE DNIEPER BASIN
Authors: Chabai V. P. , Stupak D. V. , Veselsky A. P. , Dudnyk D. V. 
Published: April 2021

The Upper Paleolithic site Barmaky, 2nd cultural layer from Volyhnia-Lublin upland is the most western manifestation of Epigravettian of the Mid Dnieper basin. During several field campaigns the 147 m2 of cultural deposits with three pits and one chalk / marl concentration were studied (fig. 1). The silty-loess deposits of Barmaky, 2 accumulated about 19 kyr cal BP (table 1) under the permafrost conditions. The fauna assemblage is represented by: mammoths, bison, reindeer, red deer, horse, bear, wolf, wolverine, polar fox, fox and hare. More than 100 thousand artifacts were recovered during the last two field campaigns. In essential account (without chips, chunks, unidentifiable debitage), the artifacts assemblage is represented by: cores and pre-cores — 0.87 %; flakes — 45.23; blades — 17.34; bladelets — 14.27; micro-blades — 7.34; burin spalls — 8.08; tools — 6.79 % (table 2). The reduction sequences are based on the flaking of uni-, bidirectional sub-cylindrical and narrow flaking surface unidirectional cores for blades and bladelets (table 3; fig. 2). There is no evidence of micro-blade technology implication. The structure of tool-kit is characterized by the dominance of burins — about 50 %; microliths — 25 %; and truncated pieces — about 18 % (table 4). The rest of tool classes are represented by a few percentages each. Among them are the end-scrapers on blades with truncated base (fig. 3). The most part of burins are represented by pieces made on obliquely truncated blades (table 5; fig. 4). Also, the obliquely truncated blades dominate the truncated pieces assemblage (table 6; fig. 5). The most representative type of microliths is the micro-points with abruptly retouched straight back and obliquely retouched base (table 7; fig. 6). The points, pendants, bracelet fragment made on tusk and perforated fossil marine shells from local chalk deposits are available. The composition of microliths, burins and end-scrapers in Barmaky, 2 tool-kit is characteristic to the cultural layers beyond the dwelling structures on such base-camps as Mezhyrich (fig. 7). Also, the presences of pits and fauna composition are close to what expected from Epigravettian base-camps. The artifacts assemblage of Barmaky, 2 belongs to the Mizyn industry. Also, Barmaky, 2 is the earliest manifestation of Epigravettian in the Mid Dnieper basin.
ANTHROPOLOGY AND ARCHAEOGENETICS OF THE PREHISTORIC POPULATION OF UKRAINE: COORDINATION OF RESULTS
Authors: Potekhina I. D. 
Published: April 2021

The process of the prehistoric population formation in the territory of Ukraine has become the object of archaeogenetic research in the context of studying the genomic history of Southeast Europe. The work was carried out in the framework of scientific cooperation with the genetic laboratories of Grand Valley State University (USA), Harvard Medical School (USA), Universities of Uppsala (Sweden) and Copenhagen (Denmark). The study of the ancient genome of the Ukrainian population has already yielded results for the Late Mesolithic and Neolithic groups of the Middle and Lower Dnieper, the population of the Trypillia culture of Volhynia (Verteba Cave), as well as for the carriers of Yamna (Pit Grave) Culture and some more late groups of the North Pontic Region (Nikitin, Potekhina et al. 2012; 2017; Potekhina et al. 2013; Krzewińska et al. 2018; Matheison et al. 2018; Potekhina 2016; 2018; 2019; Nikitin 2020). Analysis of mitochondrial DNA from Mariupol-type cemeteries showed the dominance of mitochondrial haplogroup U, which indicates a genetic links with the Mesolithic populations of Scandinavia and the forest belt of Eastern Europe. In some cases, mitochondrial haplogroups H and C have been identified here. The existence of the latter in the Dnieper basin is still difficult to explain, as it is characteristic of eastern Eurasian groups. Genetic studies of the population of the Trypillia culture were carried out on samples dated to 3900—3500 cal BC from the Verteba cave in Volhynia. The majority of its inhabitants were carriers of the Mt haplogroup H, which connects the people of Trypillia with the Anatolian and Balkan early farmers. This haplogroup was also characteristic of farming cultures of the Central European Neolithic, but its frequency in Verteba is twice as high. The Mt haplogroup U found in one resident of Verteba may indicate contacts with hunters of the steppe Dnieper Region. Genetic polymorphism is also analyzed in the bearers of the Yamna (Pit grave) Culture of the North Pontic Region, which opens a perspective in the context of the Indo-European studies. The research has shown that among the Late Neolithic populations of the proto-European anthropological type with the dominant Mt haplogroup U, and in the early Eneolithic populations of the region, carriers of haplogroup H of the Mediterranean anthropological type appear as a result of contacts with Trypillian groups, which gradually moved in the eastern direction. The same genetic lines in different proportions are preserved in the anthropologically heterogeneous North Pontic population of Yamna Culture. Expanding the analysis of genetic markers of ancient craniological complexes will facilitate the interpretation of the results of archaeogenetic research. Given the historical and anthropological context, they are promising for the study of intercultural contacts and migrations in the early history of the population of Ukraine.
OSTEOLOGICAL MATERIALS FROM THE HOUSEHOLD PIT 6 AT THE MEZHYRICH SETTLEMENT: INTERPRETATION OF THE FINDS
Authors: Shydlovskyi P. S. , Mamchur B. V. , Chymyrys M. V. , Pean S. 
Published: April 2021

The Upper Palaeolithic settlement of Mezhyrich is located on the territory of Mezhyrich village of Kaniv district, Cherkasy region. The settlement is located on the cape formed by the valleys of the rivers Ros’ and Rosava. Palaeolithic cultural layers of the site lies 2.5—3 m below the modern surface. The site is radiocarbon dated to 15—14.3 kyr BP. using bones of several animal species, including mammoth. The remains of the structures and objects are well-preserved in the cultural layer, they contain bone, antler and ivory.
In the last years pit 6 is household object of a particular interest. It belongs to the second household unit and is situated to the south of the second dwelling’s structure. The microstratigraphic studies of the object indicate three episodes of sediment accumulation in the pit, which correspond to the three cultural horizons of the site. As a result of the excavation we have a bright series of bone, tusk and antler artifacts. According to the cross-sections of the north and east walls, the pit is a lens-shaped (lens-like) depression with a diameter of about two meters and a depth of one meter. There were large mammoth bones by the edges of its filling.
For the study we have chosen samples of osteological material which bear traces of human processing. As a result of the zooarchaeological analysis several main categories of the material were chosen (identified): blanks of mammoth ribs, bone tools of long bones of small/medium-sized mammals and ornaments of teeth. It allowed to find out some technological traits and to deepen the understanding of household and everyday life of Upper Palaeolithic hunters-gatherers from the Mezhyrich site. The study of the collection allows to widen the description of this site and to conclude about the life of its inhabitants.
The research materials were used in the creation of the international training course «Nature and Society in Prehistoric Europe», supported by the European Union under the House of Europe programme: https://houseofeurope.org.ua/en.
O DIREITO À APLICAÇÃO DA CONSULTA PRÉVIA NO CASO DA HIDRELÉTRICA DE BELO MONTE: projetos de colonialidade em campos sociais minados
Authors: E Silva Artenira Da Silva , Oliveira Ribeiro Thayana Bosi , Pinheiro Rossana Barros 
Published: April 2021

Inicialmente serão analisados os direitos dos povos indígenas, dando-se ênfase à proteção da autodeterminação e à necessidade de realização de consulta prévia, livre e informada aos povos tradicionais, nos ditames da Convenção nº 169 da OIT. Dessa forma, ter-se-á como objeto de análise especificamente o caso da construção da Hidrelétrica de Belo Monte, que representa um dos mais controversos projetos implementados na Amazônia brasileira, possuindo mais de 30 anos de discussões, manifestações, protestos, denúncias, resistências e estudos. Para tanto far-se-á pesquisa bibliográfica e documental, tendo como fonte: livros, artigos e notícias sobre o tema, assim como análise de decisões judiciais adotando-se o estudo de caso como metodologia para a elaboração do presente estudo.
PENGARUH PERBANDINGAN MASSA TANAH DENGAN PUPUK ORGANIK GRANUL TERHADAP PERTUMBUHAN DAN HASIL TANAMAN BROKOLI ( Brassica oleracea var. italica forma couliflora
Authors: Sitawati Rini , Anggara Roni , Widyastuti L Sri Nur 
Published: April 2021

Broccoli (Brassica oleracea var. italica) which is often called green flower cabbage is one type of vegetable that is popular with the public. To meet the growing needs of broccoli, its cultivation business requires the right planting medium and is rich in nutrients.This study aims to obtain a ratio of soil mass and granule organic fertilizer which can increase the growth and yield of broccoli. The experiment was carried out from March 2017 to May 2017, located in Cicalung Village, Wangunharja Village, Lembang District, West Bandung Regency, with an altitude of 1200 m above sea level. The design used was a randomized block design (RBD) with 7 treatments and repeated 4 times, namely A = 6 kg of soil: 0 kg of granular organic fertilizer, B = 5.9 kg of soil: 0.1 kg of granular organic fertilizer, C = 5, 8 kg soil: 0.2 kg granule organic fertilizer, D = 5.7 kg soil: 0.3 kg granule organic fertilizer, E = 5.6 kg soil: 0.4 kg granule organic fertilizer, F = 5.5 kg soil: 0.5 kg granule organic fertilizer, G = 5.4 kg soil: 0.6 kg granule organic fertilizer.The results showed that in treatment F the use 5.5 kg of soil: 0.5 kg of granular organic fertilizer gave a better effect on plant height, number of leaves, canopy width and gross weight but had the same effect on net weight between treatments give.
Pengaruh Pemberian Campuran Fermentasi Ampas Tahu dan Dedak Padi dalam Ransum terhadap Performa Bebek Pedaging Hibrida
Authors: Surya Andrea , Suryanah Sari , Widjaya Nilawati , Permana Hilman 
Published: April 2021

The study aimed to determine the effect of giving a mixture of fermented tofu dregs and rice bran in the ration on the optimal performance of hybrid ducks. The research has been held for 35 days from 22 July 2020 to 25 August 2020, located at Reungas Village, Jagabaya Village, Cimaung District, Bandung Regency, West Java Province. The research was carried out experimentally with a completely randomized design (CRD), consisting of four treatments, namely P0 (giving basal ration 100%), P1 (giving basal ration 80% + fermented tofu dregs 10% + fermented rice bran 10%), P2 (giving basal ration 70% + fermented tofu dregs 15% + fermented rice bran 15%), and P3 (giving basal ration 60% + fermented tofu dregs 20% + fermented rice bran 20%). Each treatment was repeated 5 times and each repetition consisted of 5 hybrid ducks. The observed variables were ration consumption, body weight gain and ration conversion. The data obtained were analyzed using variance (ANOVA), if there was an effect of treatment followed by Duncan's Multiple Range Test. The results showed that the mixture of fermented tofu dregs and rice bran each 20% in the ration could produce optimal performance with ration consumption of 3,042.49 g/ tail, body weight gain of 1,671.88 g/ tail, and ration conversion 1.79.
Pengaruh Metode Group Investigation terhadap Hasil Belajar Siswa pada Muatan Materi PPKn di Kelas V SDN 2 Kalijaga
Authors: Zuhdi Ferianto , Khairunnisa Khairunnisa , Syahrul Jiwandono Ilham 
Published: April 2021

One of the factors that impact the unsuccessfulness of studying PPKn in schools is the use of a learning model that is still less innovative. Teachers tend to use the old method that is teaching the materials using lectures, questions and answers, then giving the student assignments. As a result, students feel bored, passive, less interested in learning, which decrease students’ learning outcomes. Group Investigation can be used as an alternative that will encourage students to be more active in learning with groups. This study aims to determine the effect of Group Investigation on students’ learning outcomes in studying PPKn in the fifth grade student at SDN 2 Kalijaga academic year 2020/2021.
This research is experimental research with Quasi Experimental Design type Nonequivalent Control Group Design. Population of this research was the fifth grade students of SDN 2 Kalijaga in academic year 2020/2021 consisting of two classes. The total number of the population was 45 people, all of them were chosen as the sample, where V/A as the experimental class and V/B as the control class. The researcher conducted observation and test to collect the required data. The result from the observation of applying Group Investigation in teaching indicate "fantastic" category with an percentage of 93.18% at the first meeting and 95.45% at the second meeting. The results showed that the score of student learning outcomes after being given treatment using Group Investigation was higher than before treatment. This is indicated by their pre-test score that is 50. After being given treatment their score increased become 86.81 in the post-test. Based on the results of hypothesis testing of independent samples t test using SPSS 16.0 showed that the value of tcount equal to (2.742 and 2.727) > ttable (0.294) for students’ achievement and significance level signify (Sig. 2-tailed) 0.009 < 0.05. So that, it can be concluded that H0 is rejected and Ha is accepted. It means that there is a positive effect of Group Investigation on the students’ learning outcomes in studying PPKn at grade V students of SDN 2 Kalijaga in the academic year 2020/2021.
A narrative synthesis on the epidemiology of Clostridioides difficile
Authors: SPATARU Diana , PARASCHIV Angela , BERDEU Ion 
Published: April 2021

Introduction. Clostridium difficile has been identified as the leading cause of antibiotic therapy-associated diarrhea and colitis, which has evolved from sporadic complications of antimicrobial therapy to severe, sometimes fatal events that have eventually become an endemic life-threatening issue among hospitalized and immunosuppressed patients worldwide.
Material and methods. The analysis of the relevant bibliographic sources retrieved from the PubMed, Google Scholar, and other platforms was carried out. All the articles related to these research objectives were selected, followed by exclusion of articles focused on clinics and diagnosis. The study included 43 content-based relevant articles. This present article reveals the evolving epidemiology of C. difficile infection (CDI).
Results. Clostridium difficile is a sporulated bacterium responsible for infectious diarrhea and pseudomembranous colitis, showing high morbidity and mortality rates among patients, especially in high-risk groups. C. difficile mainly affects hospitalized people over 65 years old, who have been exposed earlier to antibiotics. The risk factors for C. difficile in these individuals include depletion of the protective intestinal flora by antibiotics and a low immune response to C. difficile due to both advanced age and medical comorbidities. The major outbreaks commonly occur in health care, as well as in long-term care institutions. However, CDI is not supervised in the Republic of Moldova.
Conclusions. A system for reporting and monitoring of C. difficile infection needs to be implemented in order to promptly and efficiently manage hospital outbreaks.
Chronic delta hepatitis: from discovery to new treatments
Authors: TURCANU Adela , TAHIR WANI Suhaib 
Published: April 2021

Introduction. Hepatitis delta virus (HDV) is a small, defective RNA virus that is related more to plant viroids than to other human pathogens.
Material and methods. Nearly 50 research articles from various sources were reviewed and a comprehensive analysis was done regarding various parameters concerning HDV. Articles published over a period of 30 years were selected based on their experimental and statistical relevance to HDV. This review gives a brief insight into epidemiology, genetics, clinical evolution and treatment of chronic hepatitis delta.
Results. Chronic hepatitis delta remains a major cause of morbidity in Eastern European countries and the Mediterranean region. At the same time, there is a resurgence of HBV and HDV infection in young people (under the age of 50) in Western Europe, as a consequence of the intra-familial and sexual mode of acquisition among immigrants from Eastern Europe, the Mediterranean region and from countries of the former Soviet Union, Africa high burdened regions of Asia and South America. Prevalence among IVDU was found to be higher especially in western european countries and other regions of low HDV prevalence. Chronic delta viral hepatitis is a dynamic, progressive process. A direct cytopathic pattern of liver tissue damage was also observed, especially in the presence of HDV genotype 3. Chronic hepatitis D is reported to progress to cirrhosis and hepatocellular cancer, and this trend is greater the higher the level of HDV viremia at the time of presentation.
Conclusions. Flaws in screening and on-time diagnosis still remain due to the insufficient research and data available. While still not classified as a carcinogen by IARC, our review ends up in support of the notion that HDV infection increases the chances and fastens the pathogenic processes leading to HCC.
Epidemiological aspects in trophic ulcers with methicillin-resistant Staphylococcus
Authors: PRISACARI Viorel , BUGA Diana , BERDEU Ion 
Published: April 2021

Introduction. Trophic ulcer continues to be a major clinical problem, currently having a significant socio-economic impact. The association of microbial infections, especially with antibiotic-resistant bacteria, is one of the most common complications of trophic ulcers. In this context, trophic ulcers associated with methicillin-resistant Staphylococcus (MRS) have a high epidemiological and clinical significance.
Material and methods. The determination of risk factors, antimicrobial resistance, as well as the clinical and socio-economic impact of trophic ulcers caused by MRS strains was performed based on a retrospective case-control study. The research group included 52 observation sheets of patients with trophic ulcers caused by methicillin-resistant Staphylococcus (MRS), the control group - 39 sheets of patients with trophic ulcers caused by methicillin-sensitive Staphylococcus (MSS).
Results. MRS strains isolated from trophic ulcers had high rates of antibiotic resistance compared to MSS strains. As a risk factors of trophic ulcer from which MRS strains have been isolated, people over the age of 50, repeated hospitalizations, microbial associations and exposure to intensive care are highlighted.
Conclusions. Risk factors and local epidemiology knowledge in trophic ulcers with MRS is the key factor in implementing and complying with surveillance and control measures.
Epidemiological evolution of chronic hepatitis, liver cirrhosis and liver cancer in the Republic of Moldova
Authors: PARASCHIV Angela 
Published: April 2021

Introduction. The burden of liver diseases is a major health issue, being underestimated both at the national and international level. In the Republic of Moldova, there are over 70 thousand patients with chronic hepatitis and over 10 thousand people suffering from liver cirrhosis. 70% of patients with cirrhosis develop liver cancer. Over 2,000 patients die annually from complications caused by liver cirrhosis, and over 400 patients die due to primary liver cancer.
Material and methods. The statistical analysis of 2000-2019 reports, presented by the Agency for Public Health, as well as of 3666 patient medical records retrieved from „Timofei Mosneaga” Republican Hospital, „Toma Ciorba” Clinical Hospital and “Sfinta Treime” Clinical Hospital was carried out.
Results. 89290 cases of chronic hepatitis, liver cirrhosis and liver cancer have been officially registered. Most of them exhibited a viral etiology. The death rate was mostly recorded in patients aged 70-79. The mean age of patients with chronic hepatitis was 57.74±11.22, liver cirrhosis - 56.21±10.17, and liver cancer- 59.05±10.94. The risk factors included unprotected sex, use of sharp objects, scissors and syringes, noncompliance with dietary regimens, alcohol and tobacco use, etc. Close relatives were also investigated for the presence of viral markers in only 38.81% of cases of chronic hepatitis and in 24.37% patients with liver cirrhosis
Conclusions. The study of common epidemiological evolution of chronic hepatitis, liver cirrhosis and primary liver cancer in the population, while considering the patient’s close relationship, might reduce both morbidity and medical and socio-economic impact.