bluuebunny/crossref_metadata_2025 huggingface dataset:
Piensa mío y se venga tuyo. Sobre los tipos de predicados en el complemento pronominal posesivo en español
Authors: Casanova Vanessa , Pato Enrique
Published: May 2022

En este trabajo, de corte descriptivo formal, se examinan los tipos de predicados que favorecen la aparición de un complemento pronominal posesivo (Se olvidó mío) en lugar de un complemento de régimen preposicional (Se olvidó de mí), uso documentado especialmente en el español dialectal rioplatense y venezolano. Este fenómeno se plantea como un proceso de reestructuración, en el que el pronombre posesivo se desplaza de posición y elimina la preposición que lo separa del predicado. Después, se presentan los verbos predicativos –pronominales y plenos– que potencian los posesivos argumentales. Entre ellos, se destacan los predicados no delimitados o atélicos. Por último, se señalan algunos exponentes gramaticales (posición sintáctica, concordancia, intercalación de adverbios) que permiten distinguir el complemento de régimen preposicional y el complemento pronominal posesivo, así como este y el complemento posesivo en el ámbito adverbial.
Identidad universitaria e identidad urbana en: Crímenes imperceptibles y Los crímenes de Alicia de Guillermo Martínez
Authors: Flores Manuel Piqueras , Santos de la Morena Blanca
Published: May 2022

Como otras novelas de campus escritas en español, Crímenes imperceptibles y Los crímenes de Oxford, de Guillermo Martínez, se caracterizan por su formulación como autoficciones, en las que un académico extranjero de origen hispano llega a una universidad anglosajona. Esta cualidad narrativa permite ofrecer un singular punto de vista de la identidad universitaria y de la identidad urbana de Oxford, tal y como analizamos en este trabajo.
Francisco de Quevedo corrector: el criterio de las variantes de autor en dos sonetos de Heráclito cristiano (1613) y Polimnia (1648)
Authors: Guizado-Yampi Renato
Published: May 2022

Este artículo indaga por las variantes introducidas por Francisco de Quevedo en dos sonetos del Heráclito cristiano (1613), los famosos salmos XVII y XIX, cuyas versiones finales aparecen en la musa Polimnia de El Parnaso español (1648). Con el análisis comparativo de las incidencias temáticas, estilísticas y estructurales de las variantes, se concluye la existencia de un criterio estético común en los movimientos operados por el poeta. Con ello, se detalla por qué las variantes aportan una mejoría de ciertas directrices expresivas ya presentes en las versiones primigenias.
“Soy de don Juan sola”: Juan de Austria, el rey y la república en Los españoles en Flandes de Lope de Vega
Authors: Zeller Lisa
Published: May 2022

En el presente texto, se analizará la representación de las diversas maneras de luchar por el bien de la res publica en Los españoles en Flandes, vinculándolas con el uso de la metáfora del matrimonio moral y político entre el rey y la república en España, a comienzos del reino de Felipe III. Se argüirá que, mediante la conducta ideal de Juan de Austria, quién restablece el ‘matrimonio’ de la Corona con Flandes, roto por los rebeldes, Lope representa un modelo de una perfecta privanza y de una relación justa entre el rey –o su lugarteniente– y su república, posiblemente para reaccionar a tendencias ‘republicanas’ en su país.
Symptomatic Spaces: Adam Rapp and American Eco-Drama in the Anthropocene
Authors: Rössler Julia
Published: May 2022

This article situates two works by contemporary American playwright Adam Rapp – Faster (2002) and Ghosts in the Cottonwoods (2014) – in the wider context of the different traditions of ecological theatre that emerged in the United States in the twentieth century. These traditions can be characterised by their distinct spatial orientation, while similarly shifting focus away from the centrality of representing character and human subjectivity. Contemporary eco-drama retains this spatial orientation established by the landscape play (Gertrude Stein) and environmental theatre (Richard Schechner) but breaks with their displacement of character by developing an aesthetic mode which stages the formation of human subjectivity as deeply intertwined with concrete places. This article shows how Rapp’s plays turn places into “symptomatic spaces” in Una Chaudhuri’s sense that signify a deep interdependence between human subjectivity and nonhuman nature. My reading focuses on how Rapp’s plays contribute to the formation and the conceptualisation of a distinctly “Anthropocenic imaginary” in contemporary American drama.
Successful telehealth transformation of a pediatric outpatient obesity teaching program due to the COVID-19 pandemic – the “Video KiCK” program
Authors: Reschke Felix , Galuschka Laura , Landsberg Sarah , Weiner Chantal , Guntermann Cathrin , Sadeghian Evelin , Lange Karin , Danne Thomas
Published: May 2022

Objectives

To investigate if digital approaches can ameliorate the known consequences of social-distancing restrictions in the context of the global COVID-19 pandemic for adolescent participants originally registered for a face-to-face outpatient weight regulation program and whether video-based multiprofessional outpatient obesity therapy is successful for a group of adolescents with preexisting obesity.

Methods

The certified KiCK outpatient training program for children and adolescents with overweight and obesity was remodeled as a consequence of the lockdown traditional face-to-face program to a completely digital and video-based format on short notice. The virtual approach was compared with the results of the conventional program regarding metabolic parameters, body mass index standard deviation score (BMI SDS), well-being, and physical fitness.

Results

Sixty-nine of 77 enrolled participants for KiCK (age 8 to 17 years, BMI z score >2.0) were able and willing to participate virtually. After the first lockdown significant improvements of BMI SDS (mean 0.18; p=0.02), homeostasis model assessment (HOMA) index (mean 1.4; p=0.016), triglycerides (mean 0.18 mmol/dL; p=0.021), 6 minute-walk-test (mean 97.0 m; p=0.030, and well-being according to the World Health Organization 5 (WHO-5) questionnaire (mean 2.5; p=0.002) were found after the virtual intervention, which was comparable to the results observed previously in matched pairs data from the program during the pre-COVID period. After the end of the second lockdown weight SDS, BMI SDS, HOMA INDEX, and cholesterol were also measured reduced compared to baseline parameters measured before program initiation. Walking distance in the 6 MWT and improvement in general well-being in the WHO-5 questionnaire also persisted.

Conclusions

These results indicate good acceptance and efficacy of the video-intervention for youth with overweight and obesity during the lockdown, supporting the use of virtual modules in future programs after the pandemic.
Research on the application of 22Na radiolocation detection technology in advanced manufacturing process control
Authors: Guo Siming , Zhang Jun , Shi Lei , Chen Qingwen , Chen Wang Kun
Published: May 2022

This article mainly studies the positioning function of radioactive detection technology in process control for processing devices. The accuracy of 22Na detection is not limited by the spatial area by comparing different illumination scenarios; the accuracy of inspection is independent of the accuracy of machining equipment; the accuracy of the detection is not affected by the conditions of the processed body. This study is of great significance for the future radioactive detection technology to make up for the lack of precision caused by the existing sensor technology on the spatial positioning of the processing device, the illumination environment and the material characteristics of the processed body, and for the process control research in the field of advanced manufacturing.
Tellurium-induced cyclization of olefinic compounds
Authors: Ali A Aldawood Sara , Das Aparna , Banik Bimal Krishna
Published: May 2022

In this article, we discuss about the importance of Tellurium (Te) in organic synthesis. Tellurium-induced cyclization of alkenyl compounds, as well as alkynyl compounds, are considered for the study. The developments in this area are incorporated in great detail. The mechanism of the reactions does not follow any straightforward process. This study opens up the possibility of stereocontrolled synthesis of complex natural products.
Nuclear data for light charged particle induced production of emerging medical radionuclides
Authors: Pupillo Gaia , Mou Liliana , Manenti Simone , Groppi Flavia , Esposito Juan , Haddad Ferid
Published: May 2022

Whatever the radionuclide to be used in nuclear medicine, it is essential to know the expected yield during the production process, but also of all the possible radionuclidic impurities coproduced, that can have an impact on the product final quality, as well as in the related waste management. The availability of the majority of emerging radioisotopes, including the theranostic ones or pairs, is mainly limited by the fact that, for most of them, the optimal production route still needs to be strengthened if not defined in some cases. The aim of this work is to present a review on the charged particle induced nuclear cross sections to produce some emerging radionuclides for medical applications to show that all types of projectiles should be considered in the quest of producing medical radionuclides. An accurate analysis of the production routes is presented for some radionuclides (67Cu, 47Sc, 89Zr, 103Pd, 186gRe, 97Ru, 211At) chosen as examples to highlight (i) how the quality of the final product strongly depends on the chosen target/projectile/energy parameters set, (ii) how deuteron production routes may sometimes be more effective than the proton ones or lead to a different impurity profile and (iii) how α-particle beams may allow to bypass the limitations occurring when using Z = 1 beams. An overview of possible advantages and drawbacks of the cited production routes and of potential cross sections that still need to be measured, is also reported.
Five decades of GSI superheavy element discoveries and chemical investigation
Authors: Düllmann Christoph E. , Block Michael , Heßberger Fritz P. , Khuyagbaatar Jadambaa , Kindler Birgit , Kratz Jens V. , Lommel Bettina , Münzenberg Gottfried , Pershina Valeria , Renisch Dennis , Schädel Matthias , Yakushev Alexander
Published: May 2022

Superheavy element research has been a strong pillar of the research program at GSI Darmstadt since its foundation. Six new elements were discovered along with many new isotopes. Initial results on chemical properties of the heaviest elements were obtained that allowed for comparing their behavior with that of their lighter homologs and with theoretical predictions. Main achievements of the past five decades of superheavy element research at GSI are described along with an outlook into the future of superheavy element research in Darmstadt.
Exposure to air pollution and risk of ovarian cancer: a review
Authors: Dehghani Samaneh , Moshfeghinia Reza , Ramezani Mahsan , Vali Mohebat , Oskoei Vahide , Amiri-Ardekani Ehsan , Hopke Philip
Published: May 2022

Objectives

Exposure to air pollution has destructive health consequences and a potential role in ovarian cancer etiology. We conducted a systematic review of the studies assessing the associations between ovarian malignancy and exposure to air pollutants.

Content

The included studies were categorized based on types of measured ambient air pollutants, including particulate matter (five studies), gases (two studies), air pollutant mixtures (eight studies), and traffic indicators for air pollution (only one study). Because of the heterogeneity of quantitative data of the reviewed studies, we qualitatively reviewed the air pollution role in ovarian cancer risk with representing incidence and/or the mortality rate of ovarian cancer in related with air pollution. Nine studies were ecological study design. Except for one, all studies confirmed a positive correlation between exposure to ambient air pollution (AAP) and increased ovarian cancer risks.

We concluded that prolonged air pollution exposure through possible mechanisms, estrogen-like effects, and genetic mutations might affect ovarian tumorigenesis. This research surveyed the limitations of the previous studies, including issues with ambient air pollution surveillance and assessing the exposure, determining the air pollution sources, data analysis approaches, and study designs.

Outlook

Finally, the authors provide suggestions for future environmental epidemiological inquiries on the impact of exposure to ambient air pollution on ovarian malignancy.
Boosted dopamine and blunted serotonin in Tourette syndrome – evidence from in vivo imaging studies
Authors: Nikolaus Susanne , Mamlins Eduards , Antke Christina , Dabir Mardjan , Müller Hans-Wilhelm , Giesel Frederik L.
Published: May 2022

The precise cortical and subcortical mechanisms of Tourette syndrome (TS) are still not fully understood. In the present retrospective analysis, adolescent and adult medication-naïve patients showed increased DA transporter (DAT) binding in nucleus caudate (CAUD), putamen (PUT) and/or whole neostriatum (NSTR). D2 receptor (R) binding and DA release were not different from controls throughout the nigrostriatal and mesolimbocortical system. When patients were medication-free (either medication-naïve or under withdrawal), DAT was still increased in PUT, but not different from controls in CAUD, NSTR and ventral striatum (VSTR). SERT was unaltered in midbrain/pons (MP), but decreased in PUT, thalamus (THAL) and hypothalamus. D2R was unaltered throughout the nigrostriatal and mesolimbocortical system, while DA release was not different from controls in PUT, CAUD and NSTR, but elevated in VSTR. 5-HT2AR binding was unaltered in neocortex and cingulate. In acutely medicated adults, DAT was unaltered in PUT, but still increased in CAUD, whereas DA release remained unaltered throughout the nigrostriatal and mesolimbocortical system. When part of the patients was acutely medicated, vesicular monoamine transporter (VMAT2), DAT, SERT and DA synthesis were not different from controls in striatal regions, whereas D2R was decreased in NSTR, THAL, frontal cortex and limbic regions. Conversely, 5-HT2AR binding was unaltered in striatal regions and THAL, but increased in neocortical and limbic areas. It may be hypothesized that both the DA surplus and the 5-HT shortage in key regions of the nigrostriatal and mesolimbic system are relevant for the bouts of motor activity and the deficiencies in inpulse control.
Is information power? Exploring the potential of analytics tools for student representatives
Authors: Rates Diego , Gašević Dragan
Published: May 2022

An industrial revolution based on digital technologies and data is rapidly transforming most human activities. In the case of higher education, research on learning analytics has experienced significant expansion and evolution in only a few years. However, there is still a dearth of literature on analytics tools designed to support student representatives, which could generate growing informational and technological asymmetries in higher education. To address this critical gap, this study explored the potential key data required by student representatives for their effective participation as partners in educational improvement and the main benefits that associated analytics tools could offer. To do this, this study used a micro design ethnography and a dialogic approach with participants from a Scottish university. Findings suggest that access to data and analytics could influence the participation of the student body as egalitarian partners. These results reinforce the need for further research.
“Knowing nothing about EDI:” A collaborative autoethnography exploring how an anti-racist project was created, publicized, and silenced
Authors: Pohl Ethan , Ajadi Tari , Soucy Theo , Carroll Heather , Earl Jason , Verduyn Christl , Connolly Maureen
Published: May 2022

This collaborative autoethnography explores how a group of students and professors from across Canada came together following racial justice protests of 2020. Driven by a desire to pressure Canadian higher education organizations to act on statements and commitments they had made regarding anti-racism, the group embraces a students-as-partners framework in the creation of a list of demands for institutions. Despite claims by such organizations that they were addressing racism, the demands were largely ignored. The authors explore both phases of the project, from factors leading to the successful creation of the demands to experiencing dismissal by the institutions they were designed to help. Twin messages are drawn from this work: students-as-partners is a powerful and useful method for engaging in conversations and taking action regarding anti-racism in higher education, yet this has little bearing on the institutions and structures which participate in oppression.
“Radical TAs”: Co-creating liberatory classrooms with undergraduate students
Authors: Schaefer Mattie , Henson Tenaja , Wells Rehshetta , Ezell Sarena , Holton Judia , Pitre Donzahniya , Craven Krista
Published: May 2022

In this paper, we suggest that when undergraduate students are engaged as full teaching partners with professors in the college classroom, more liberatory and transformative educational spaces can be created. This paper is based on findings from a qualitative participatory study led by a team of six undergraduate students and one professor who engaged in a series of collaborative teaching endeavors (known as the Radical Teaching Assistant Project) at a small liberal arts college in the southern United States. Our findings suggest that positioning undergraduate students as co-teachers in college classrooms (a) fosters deeper student engagement through relatability, (b) creates more accessible and generative learning environments, (c) subverts knowledge hierarchies in the academy, (d) challenges dominant discourses and norms in the classroom, and (e) provides a space to engage in prefigurative politics. We also discuss some key challenges that arise through this model of collaborative teaching. Our findings suggest that students have much to offer college classrooms when they are central actors in designing course curricula and facilitating class sessions for their peers.
CHARACTERIZATION of THE PHYSICO-CHEMICAL COMPOSITION, PHYTO-CHEMICAL PROPERTIES, COOKING CHARACTERISTICS and BIOACTIVE COMPOUNDS of KONURALP RICE
Authors: AYDIN Emine
Published: May 2022

This is the first study conducted on a variety of rice (Oryza sativa L.) traditionally grown in the Konuralp region of the Duzce province, in the West Black Sea region of Türkiye. It investigated the physico-chemical composition, phyto-chemical properties, cooking characteristics and bioactive compounds (total phenolic content, antioxidant activity determined with the methods of ABTS•+, CUPRAC, DPPH• and FRAP) of Konuralp Rice (KR) as well as in-vitro bioaccessibility. The proximate chemical composition of the rice was found to be as follows: the moisture content was 13.89%, the protein content was 6.48%, the total dietary fiber was 0.82%, the energy value was 323.44 kcal and the amount of starch was 59.64%. On the other hand, the phytic acid content of the sample was found to be 258.69 mg/100g. The total phenolic content of KR was found to be 2100 mg GAE/100g. The highest antioxidant capacity was found in the method of DPPH• for extractable (12.73 μmol trolox/g) and hydrolyzable phenolics (62.50 μmol trolox/g). The antioxidative bioaccessibility were found to be 80.19% (ABTS•+), 27.96% (CUPRAC), 20.63% (DPPH•) and 0.92% (FRAP). Due to the its physico-chemical and phyto-chemical properties as well as its high bioactive component content, more attention should be paid to the traditionally produced KR.
Energy band gaps and optical absorption properties of the CdZnS and CdZnS:PEO thin films prepared by chemical bath deposition
Authors:   Physics, Physics in materials, Ministry of Education, Baghdad, Iraq, Hussein M. A. , Mohammed K. A. ,   Department of Medical Physics, Hilla University College, Babylon, Iraq, Talib R. A. ,   Polymer research center, University of Basrah, Basra, Iraq
Published: May 2022

The optical characteristics of (CdZnS) and (CdZnS:PEO) nanofilms made by the chemical bath deposition technique were examined in the current paper. The films displayed an typical transmission of 65-90% ranging between 500-900 nm. Transmission touched the 90% for wavelength of 600 nm and above. The bandgap energy of CdZnS film was 3eV and was found to be increased to 3.1 eV after using poly ethylen oxide (PEO). All of these results show that PEO can make CdZnS film better. The better transmission of the prepared films also shows that the method described is good for making CdZnS thin films for solar cells.
Band gap determination of chemically deposited Cu2S/Fe2O3 quaternary thin films
Authors:   Department of Physics, Ebonyi State College of Education, Ebonyi State, Nigeria, Okoro R. O. , Augustine C. ,   Department of Physics, Alex Ekwueme Federal University Ndufu-Alike, Ebonyi State, Nigeria, Chikwenze R. A. ,   Department of Physics, Alex Ekwueme Federal University Ndufu-Alike, Ebonyi State, Nigeria, Amadi S. O. ,   Department of Physics, Alex Ekwueme Federal University Ndufu-Alike, Ebonyi State, Nigeria, Kalu P. N. ,   Department of Physics, Alex Ekwueme Federal University Ndufu-Alike, Ebonyi State, Nigeria, Okpani P.E. ,   Department of Electrical/Electronic Engineering, Alex Ekwueme Federal University Ndufu Alike, Ebonyi State, Nigeria, Robert B. J. ,   Department of Electrical/Electronic Engineering Technology, Akanu Ibiam Federal Polytechnic, Unwana, Ebonyi State, Nigeria, Nwoke O. N. ,   Department of Mechanical Engineering, Akanu Ibiam Federal Polytechnic, Unwana, Ebonyi State, Nigeria, Achilike K.O. ,   Department of Industrial Physics, Abia State University, Uturu, Abia State,Nigeria, Dike C. O. ,   Department of Physics, Alex Ekwueme Federal University Ndufu-Alike, Ebonyi State, Nigeria
Published: May 2022

Quaternary thin films of Cu2S/Fe2O3 have been synthesized via simple, inexpensive and highly reproducible chemical bath deposition technique. The grown films were characterized with Rutherford backscattering technique (RBS), X-ray diffractometer (XRD), scanning electron microscope (SEM), and spectrophotometer for compositional, structural, morphological, and optical properties respectively. The multiple peaks exhibited by the various XRD patterns of the films showed that the films are polycrystalline while the SEM analysis showed an increase in grain size and uniformity of grain distribution as temperature increases. The absorbance (A), transmittance (T), absorption coefficient (  ), band gap (  g ), extinction coefficient (k), real ( r  ) and imaginary dielectric ( i  ) constants were modified by thermal annealing. The optical and solid state analysis for Cu2S/Fe2O3 thin films indicate that A ≤ 0.66, T ≤ 92 %,  ≤ 1.70 x 106m -1 ,  g increases from 3.75-3.85 eV, k ≤ 3.75, r  ≤ 8.5 and i  ≤ 2.05. The high transmittance in the infrared region of Cu2S-Fe2O3 thin films deposited suggest that the films can be used as coating materials for the construction of poultry houses in order to protect young chicks which have not developed protective thick feather from UV radiation while admitting the heating portion of electromagnetic spectrum into the house for warming young chicks. Based on the wide band gap exhibited by all the quaternary thin films, they are promising materials for window layers in solar cell fabrication and fabrication of optoelectronic devices, etc.
Simple route synthesis of (Al, Ni) co-doped ZnO nanoparticles and their characterizations
Authors:   Department of Physics, College of Sciences, Imam Mohammad Ibn Saud University (IMSIU), Riyadh 11623, Saudi Arabia, El Ghoul J. , Alharbi F.F. ,   Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
Published: May 2022

The codoped nanoparticles by Aluminium and Nickel were prepared by sol–gel method and theirs different physical properties were studied. The obtained nanoparticles were undergoes a heat treatment in air at different temperatures ranging from 500 °C to 1000 °C in 2 hours. The structural results revealed that the structure is wurtzite with an average crystallite around 30nm, and the appearance of NiO second phase. The optical spectroscopy (UV-Vis) shows a red shift in band gap values with increasing of heat treatment temperature. Photoluminescence (PL) results indicate the effects of oxygen vacancies on emission spectra and confirms the shift of band gap energies. Magnetic measurements at 300K showed a superparamagnetic behaviors.
RF magnetron sputtered deposited metal-doped diamond like carbon thin films: structural, morphological, mechanical, and optical properties
Authors:   Laser and Optronics Centre, Department of Physics, University of Engineering and Technology, Lahore, Pakistan, Majeed S. , Siraj K. ,   Laser and Optronics Centre, Department of Physics, University of Engineering and Technology, Lahore, Pakistan, Fiaz Khan M. ,   Laser and Optronics Centre, Department of Physics, University of Engineering and Technology, Lahore, Pakistan, Khan M. I. ,   Department of Physics, The University of Lahore, 53700, Pakistan, Naseem S. ,   Centre of Excellence in Solid State Physics, University of the Punjab, Lahore, Pakistan, Abdelmohsen Shaimaa A.M. ,   Department of Physics, College of Science, Princess Nourah bint Abdulrahman university. P.O.Box 84428, Riyadh 11681, Saudi Arabia, Elansary Hosam O. ,   Plant Production Department, College of Food and Agriculture Sciences, King Saud University, Riyadh 11451, Saudi Arabia
Published: May 2022

The present study investigates the surface, structural, mechanical and optical properties of (0, 1%, 2%, 3%, 4%, 5%) palladium doped diamond like carbon (Pd;DLC) thin films prepared by using r. f. magnetron sputtering technique. The structural, mechanical, surface, and optical properties were measured by Energy Dispersive X-rays (EDX), Raman spectroscopy, Vickers Hardness Measurement (VHM), atomic force microscopy (AFM), and Spectroscopy Ellipsometry, respectively. EDX results clearly indicated the presence of palladium metal into DLC matrix. Raman spectroscopy results reveal that all Raman spectra consist of two main peaks as D-band (1355.7 to 1359.3) and G-band (1558.9 to 1577.9). Additionally, ID/IG ratio increases monotonically from 0.391 to 0.504 with increasing palladium concentration. With increasing doping concentration, AFM shows a modest increase in roughness of Pd-DLC thin films. The decline in the hardness of Pd-DLC films from 9.38 Gpa for 1% to 8.90 Gpa for 5% were observed by using Vickers Hardness Measurement (VHM). Spectroscopy ellipsometry showed that Eg reduced from 2.11 to 1.68 eV by adding the palladium concentration in Pd-DLC film. The decrease in the optical bandgap energy over the wide range is due to enrichment of sp2 contents than undoped film. The results reveal that incorporation of palladium produced prominent change in different properties of DLC film by increasing sp2 content. At 5% doping 1.68 eV band gap is achieved which is very ideal for solar cells fabrication. Therefore, this film is very good for solar cells and LEDs fabrications.
Synthesis of optically important transparent SnS2/PS composites films through chemical route and their photocatalytic applications
Authors:   Nano research lab, Department of Physics, School of Sciences ITM University, Gwalior, India, Mohapatra R. , Kaundal J. B. ,   Nano research lab, Department of Physics, School of Sciences ITM University, Gwalior, India, Goswami Y. C. ,   Nano research lab, Department of Physics, School of Sciences ITM University, Gwalior, India
Published: May 2022

Optically important SnS2/Polystyrene (PS) transparent flexible composites were synthesized by low cost sol gel route and characterized using structural, morphological, and optical analysis. Polystyrene exhibits amorphous nature however an excellent improvement in crystallization is observed on inclusion of fresh developed SnS2 in polystyrene. FTIR peaks were also confirms the formation of SnS2/PS composites. AFM micrographs shows spheres like structures in morphology and this tendency increases with increase in sulfur ratio to tin. The increment in roughness of the composites is also observed with increase in sulfur ratio. The composites exhibits excellent photocatalytic activity with about 97% methyl Red dye degradation presence of sunlight.
Analysis of Micro-Residues on Stone Tools From Zaskelna IX, Crimea: First Results
Authors:   PhD in History, Associate professor, Department of Archaeology and Museum Study, Kyiv Taras Shevchenko National University, Ryzhov Serhii , Stepanchuk Vadym ,   DSc in History, Leading Research Fellow, Stone Age Archaeology Department, Institute of Archaeology, the National Academy of Sciences of Ukraine, Nezdolii Oleksandr ,   Junior Research Fellow, Stone Age Archaeology Department, Institute of Archaeology, the National Academy of Sciences of Ukraine, Vietrov Denys ,   PhD in History, Research Fellow, Stone Age Archaeology Department, Institute of Archaeolo-gy, the National Academy of Sciences of Ukraine
Published: May 2022

The article presents the results of micro-residues study on the surface of stone tools from the lower, Acheulean layer of the cave site Zaskelna IX in the Crimea. Several recognised varieties of detected micro-residues oforganic and mineral origin are characterised. Likely traces of specific wear inherent on the soft handle areidentified. Pigment residues correlate with these traces. Micro-residues and use-wear indicate the possible wrapping of stone tools in the leather or plant substances with the help of adhesives containing ochre powder for safe and secure gripping in hand.
Fibulae of East Germanic Tradition From Saint-Cheron in Northern Gaul (Late Roman Period — Migration Period)
Authors:   Dr. hab., Directeur de Recherche émérite au Centre National de la Recherche Scientifique (CNRS), UMR 8167 «Orient et Méditerranée», France, Kazanski Michel
Published: May 2022

For the late Roman Period and the beginning of the Great Migration Period on the territory of the Western Roman Empire, and in particular in Northern Gaul, a series of items was revealed — primarily fibulae and combs that belonged to the East German, and primarily Cherniakhiv tradition. Among them there are two braided crossbow brooches with an extended stem, found in one of the burials (No. 94) of the Saint-Cheron burial ground in Chartres (France), and two braced crossbow brooches with an expanded stem. They are derivatives of the Ambros 16/4-III type fasteners from the late Roman period. Similar fasteners in the late Roman time are quite well represented in a wide geographic zone from the Baltic to the Black Sea. Such fibulae are especially typical for the Cherniakhiv culture, that is, for the German and non-German population, identified with the Goths and their allies. In the Cherniakhiv area, such fasteners are best represented in its western part, to the west of the Dniester. That is, in the territory where, according to written sources, Visigoths are localized. These brooches are also found, although much less frequently at the sites of the Wielbark and Przeworsk cultures in the Vistula basin, which also belonged to the East Germans. These fasteners in Eastern and Central Europe are dated by the 3rd—4-th centuries. The fibula from the Saint-Chiron burial ground differs from the «eastern» analogs of the Roman time by the rounded section of the back, while in Eastern and Central Europe similar fibulae have a back in the shape of a flattened faceted rod or plate. It seems that the Cherniakhiv, Welbark and Przeworsk brooches are the prototypes of agrafes from the Northern Gaul. Concerning the time of the Great Migrations, mainly for the 5th century, crossbow fibulae derived from those of Ambroz 16/4-III are rare and attested outside of the main area of distribution of their prototypes: in the North-East of the Black Sea (1 site), in Spain (1 site), in Italy (1 site) and especially in Gaul (3 sites). Fibulae of the Ambroz 16/4-III type and their derivatives were found mainly in the area of activity of the Goths during the Roman Period and the Great Migrations, between the Vistula, the Black Sea and the Iberian Peninsula. The few fibulae of this type discovered elsewhere, in the Northern Gaul, for instance, probably attest to the displacement of isolated individuals. Indeed, in the tomb of Saint-Chéron, the position of the pair of fibulae, on the thorax, is entirely in accordance with that adopted by the Eastern Germans in Roman times.
Supernational financial market regulation: contradictions of institutionalization
Authors:   State Institution “Institute for Economics and Forecasting, NAS of Ukraine”, Kornivska Valeria
Published: May 2022

The article considers the current trends of strengthening supranational supervision as a result of global counter-crisis reform in the context of the shrinking unregulated space of operational activity of financial intermediaries and the implementation of the principles of global governance. The author characterizes the basic approaches of financial compliance, its goals, and implementation mechanisms in the global and national financial spaces. The legislative and normative basis for the implementation of financial compliance in the European financial and institutional coordinate system is systematized and the effectiveness of supranational financial control systems is determined. Features of supranational regulatory development are revealed. The ambivalence of financial compliance in terms of its implementation in the field of client-bank interaction is shown: against the background of banking dictates about clients, financial institutions themselves have the opportunity to overcome regulatory restrictions by more active use of shadow banking, offshore operations and more. There is a vision of quasi-institutionalization, or imaginary institutionalization, which manifests itself in the formal increase of supervisory procedures, the growth of regulatory mechanisms and the strengthening of general control, and at the same time in the actual avoidance by global financial structures from undesirable financial compliance. It is concluded that global trends of strengthening supervision close to hyperinstitutionalization at the local level lead to the emergence and expansion of non-institutional spaces that are not subject to classical regulation (shadow banking), or in which rules of operation are not available for adoption and use by ordinary entities (banking compliance).
Natural experiments as the latest tools in labor economics
Authors:   State Institution “Institute for Economics and Forecasting, NAS of Ukraine”, Blyzniuk Viktoriia
Published: May 2022

The works by three scientists: D. Card, J. Angrist and G. Imbens received the highest award of economic scientific heritage in memory of A. Nobel last year. The scientific community recognizes their empirical contribution to the labor economy and their original view of causation and justification of methodological approaches to their evaluation in real life. It is well known that most of the problematic issues in the social sciences are related to causation. There is a need to assess the effects of uncontrolled migration on wages and employment in the regions where migrants arrive. And how to assess the impact of the duration of education on future earnings? The lack of a comparative framework, such as information on the consequences of changes in migration or refusal to continue training, makes it very difficult to assess the consequences and causation. But the winners of 2021 proved the possibility of answering such questions by conducting natural experiments that are similar to clinical trials in medicine. The results of their research have allowed economists around the world to obtain and use the toolkit of natural experiment in the study of economic processes. Without violating ethical norms, the winners were able to assess the effects of various factors and the socio-economic effectiveness of causal relationships. A special advantage of their scientific results is the change of the research paradigm and the updating of tools in labor economics. Renouncing the traditional view of experimentation, the Nobel laureates in economics argued that they could consider a significant number of economic agents in roughly the same situation and, observing changes in their behavior and consequences, conclude and evaluate causal relationships. The author of the article, analyzing the scientific achievements of last year's winners, concludes that the latest toolkit for randomized experiments have allowed the winners to get original and very controversial answers to traditional tasks, thus carrying out a "revolution of trust" in economics.
DETERMINACIÓN DE LA CAPACIDAD DE ABSORCIÓN DE MATERIA ORGÁNICA CON BUCHÓN DE AGUA (Eichhornia crassipes) MEDIANTE LA MODELACIÓN LOGÍSTICA DE VERHULST PARA EL SECTOR EL ESPINO-RÍO BOGOTÁ PTAP TIBITOC.
Authors: Suárez Malagón Andrés José , Lara Mendivelso Julie Andrea , Castañeda Rodríguez Luz Jaddy , Casas Cortés Paula Andrea
Published: May 2022

La Planta de Tratamiento de Agua Potable- PTAP Tibitoc se abastece en gran medida por el Río Bogotá, a través de dos bocatomas ubicadas en el sector El Espino. Allí es evidente el desarrollo incontrolado de la macrófita Buchón de agua (Eichhornia crassipes) atribuido al constante aporte de carga de nutrientes y materia orgánica aguas arriba de la cuenca, lo cual genera problemas en la dinámica ecosistémica del cuerpo de agua, así como en la calidad del recurso que abastece a la planta. El propósito de este estudio, mediante una metodología experimental verdadera, es evaluar la capacidad de absorción de materia orgánica de la especie, representada por la cantidad de materia orgánica removida por unidad de biomasa, estimando un valor máximo de remoción equivalente a 19,53 mg O2 L-1/g por unidad de Buchón, y con ayuda del modelo logístico de crecimiento, se  valida el periodo en el cual se puede mantener la especie en el cuerpo de agua, sin que esta afecte el sistema, concluyendo que su eficiencia empieza a decaer entre los 165 a 195 días después de sembrar los especímenes en cauce de la zona de estudio, luego de los cuales se sugiere su remoción.
DIVERSIDAD DEL GÉNERO Lutzomyia (Diptera: Psychodidae) EN MUNICIPIOS DEL DEPARTAMENTO DE CÓRDOBA – COLOMBIA
Authors: García Leal Yerson Javier , Carrero Sarmiento Diego Armando , Hoyos López Richard Onalbi
Published: May 2022

La estimación de los cambios en la diversidad y como se encuentran compuestas las comunidades de insectos en áreas de transmisión, de diferentes zonas de vida, puede indicar patrones diferenciales en la transmisión y fauna de reservorios asociada, así como diferentes escenarios de riesgo epidemiológico. Un ejemplo es la leishmaniasis, parasitosis relacionada con la presencia de flebotomíneos del género Lutzomyia, que en Córdoba (Colombia) presenta áreas de transmisión para las formas cutánea y visceral de leishmaniasis, enmarcadas en diferentes zonas de vida – Holdridge (Bs–T, Bh–T, entre otras). El presente estudio tiene como objetivo estimar la diversidad de los inventarios entomológicos realizados en diferentes zonas con presencia de potenciales vectores de leishmaniasis, en 17 localidades de diez municipios del departamento de Córdoba, entre mayo de 2015 y noviembre de 2016. En total se recolectaron 1695 flebotomíneos representado en 13 especies del género Lutzomyia.  Las especies más abundantes para el departamento de Córdoba son Lutzomyia evansi y Lutzomyia gomezi, con el 30,44 % y 29,62 %, respectivamente. Se reporta por primera vez la presencia de Lutzomyia trapidoi para el territorio cordobés. Con este estudio se amplía el conocimiento de la diversidad del género Lutzomyia en términos de distribución de abundancias, diversidades verdaderas y composición de especies en zonas activas del departamento de Córdoba.
¿Dinero fácil? Moral y cultura en las sociedades agrarias cocaleras
Authors: Gutiérrez Sanín Francisco , Machuca Diana
Published: May 2022

Analizamos en el presente artículo la plausibilidad de la “hipótesis estándar” sobre las transformaciones sociales y culturales que ha traído la economía de los cultivos ilícitos a los sectores campesinos que par- ticipan en ella. Según dicha hipótesis, el cultivo de la coca, asimilado a una actividad narcotraficante, conduce a la búsqueda del “dinero fácil”, el derroche y el consumismo, el individualismo y la cultura de la ilegalidad. Con base en amplia evidencia cuantitativa y cualitativa, sostenemos que la hipótesis estándar es fundamentalmente errónea. Presentamos las razones y los mecanismos que nos conducen a tal conclusión.
Influence of fractional distillation on the yield and quality of biofuels obtained through thermal catalytic cracking of crude palm oil
Authors: Silvio Silvio Alex P. Mota , Andréia Andréia A. M. Mota , Nélio Nélio T. Machado
Published: May 2022

This paper investigates the influence of the fractional distillation on the yield and quality of biofuels obtained in a laboratory unit (Vigreux column) at atmospheric pressure, producing three distilled fractions: (1) green gasoline, (2) green aviation kerosene, and (3) green diesel. The quality of the distilled fractions was evaluated through physical-chemical analysis, FTIR spectroscopy, and GC-MS analysis. The fractional distillation of the crude biofuel provided biofuels in the form of distilled fractions with most values of physical-chemical properties within the limits established by national and international regulatory agencies and with experimental distillation curves similar to standard distillation curves. GC-MS analysis showed that the three distilled fractions had higher contents of hydrocarbons than oxygenated compounds and contained hydrocarbons characteristic of petroleum derivatives such as gasoline, aviation kerosene, and diesel.
Flue gas and nitrogen co-injection during cyclic steam stimulation in heavy oil reservoirs: a numerical evaluation
Authors: Bueno Zapata Nicolás , Mejía Cárdenas Juan M. , Martínez Paternina Julián José
Published: May 2022

In this study, steam co-injection with flue gas or N2 was numerically reproduced to determine the best gas composition to be deployed in a Colombian heavy crude oil, using a commercial reservoir simulation software. The oil mixture was characterized via EoS parameters, withtuning average errors of 5%. Injection conditions were evaluated with thermal simulations to analyze the response in oil production, allowing to find a deployment strategy having the highest recovery with the lowest gas injection volume. Results agree with experimental observations regarding the starting times for co-injection and help to narrow the uncertainty range where gas and steam co-injection is asuitable recovery technique in heavy oil reservoirs. The study showed that the incremental oil recovery factor can be enhanced, at least, in 40% when optimizing the deployment of steam and flue gas co-injection for the well studied here
Biodegradability of a bioplastic film from tamarind xyloglucan in composting bioreactors
Authors: Alvarez-Betancourt Paola Andrea , Luna-Pabello Víctor Manuel , Ussa-Garzón Jaime Eddy , Maciel-Cerda Alfredo
Published: May 2022

Plastic is used excessively due to its excellent properties and its low cost. This has led to the ubiquitous accumulation of waste as it takes a very long time to biodegrade. Until now, several research projects have developed different biodegradable plastics, and the tests to validate them are still being undertaken. In this research, a biodegradability test was performed on a bioplastic synthesized from tamarind xyloglucan and ethyl acrylate (b-XgT), designed to be a substitute for polystyrene. A sample of the b-XgT was composted in laboratory conditions and CO2 release measurements were made. The results showed a biodegradation time of 18 days with a loss of mass of 40.3% and a final pH of 7.1. The b-XgT was found to be biodegradable of the compostable type through the anaerobic route, which promotes the digestion of compounds such as xylose that contribute to the degradation of the whole polymer.
Framework for monitoring the temperature of aquaculture crops based on IOT
Authors: Arteaga Quico Alisson Diane , Wong Portllo Lenis Rossi
Published: May 2022

One of the current concerns in aquaculture is the management of the culture environment due to the impact that this generates, in the culture at production level, to the environment due to uncontrolled residues and in food safety, this concern is increasing due to the intensification of this activity in recent years which generates a high demand for food. Currently, many of the aquaculture processes are carried out manually, which requires cost in both time and resources, so this research, making use of technology, proposes a framework for full real-time temperature monitoring , configurable, scalable and low-cost by applying IOT, with the aim of optimizing the harvesting time and analysis of the crop status, which allows to support decision-making before the crop is affected.
Energy & Thermal Comfort Performance using EnergyPlus® for a Single-Family Residency located in Foz do Iguaçu, Climatic Zone 3A-Brazil
Authors: Gómez Álvaro Germán Leiva Gómez , Punhagui Katia Garcia Punhagui , Ando Junior Oswaldo Hideo
Published: May 2022

Energy performance and thermal comfort through EnergyPlus®, for a prototype of a single-family residence located in Foz do Iguaçu,climate zone 3A-Brazil. Using the estimated thermal sensation inside the house, natural ventilation was analyzed, where a system was compared considering the air infiltrations of the construction model with another of programmed selective ventilation; and two heating,ventilation, and air conditioning (HVAC) systems were proposed, being a Split system and a variable refrigerant gas flow (VRF) system.The results showed that, although the cases of natural ventilation influenced internal temperature and humidity, thermal comfort in the region is not feasible without the use of artificial mechanisms. The VRF system showed annual energy saving to the air conditioning of 14.76% and saving in the total annual energy consumption of 10.11% about the Split system, in addition to more economic profitability.
Design and validation of a prototype to calibrate the pressure variable in tonometry
Authors: Pineda Zapata Uriel Fernando , Daza-Fernández Juan Fernando
Published: May 2022

This paper corresponds to the results of an experimental research that to led to the design of a useful prototype for quality control of measurements in the field of tonometry to diagnose and check glaucoma. All tonometry techniques are based on Goldmann ́s tonometers (GT) and the Imbert-Fick principle. Taking into account the principles and techniques of industrial metrology, the prototype could be used as a standard to calibrate the pressure readings of this class of tonometers. The developed protoype eliminates the indirect measurement that is required with current standards and facilitates a greater control of the sources of error in the measurement. The model is based on the integration of a sensor to a hydraulic model to measure pressures from 0 to 80 mmHg range, whose precision was validated through R&R studies. The precision of the prototype was validated according to the Rigel UNI-SIM standard and was complemented by calibrating 15 tonometers.