bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis of Silver Nanoparticles Using Dichloromethane Extract of Chrysanthemum cinerariaefolium and Its Bioactivity
Authors: Kosgei Caroline Jepchirchir , Obonyo Meshack Amos , Matasyoh Josphat Clement , Owuor James J. , Ollengo Moses A. , Irungu Beatrice N.
Published: December 2021

Common methods of synthesizing metallic nanoparticles are chemical and physical. However, they are expensive and use toxic chemicals. Green synthesis is less costly and safer hence a potential alternative. Silver nanoparticles (Ag NPs) were synthesized using dichloromethane extract of Chrysanthemum cinerariaefolium and colour change from pale green to dark brown was observed. Scanning Electron Microscopy (SEM) images were faceted and others formed clusters. Transmission Electron Microscopy (TEM) images were spherical with an average size of 22.8± 17.5 nm. EDX analysis showed the nanoparticles had percentage abundance of 67.26%. Fourier-transform Infrared Spectroscopy (FTIR) analysis showed absorption bands at 3489.59 cm-1, 3217.80 cm-1, 2384.74 cm-1 , 1633.05 cm-1, 1405.08 cm-1, 1109.32 cm-1 and 505.93 cm-1. The UV-Vis analysis showed Surface Plasmon Resonance (SPR) peak at 434 nm. The nanoparticles were more active on P. aeruginosa with an MIC of 15 µg/ml while the cytotoxicity assay showed Ag NPs had an MIC of 33.33 µg/ml hence were noncytotoxic against Vero cells.
E-Commerce Logistics Service Quality
Authors: Akıl Siber , Ungan Mustafa Cahit
Published: December 2021

With the recent developments in technology, globalization, and COVID 19 pandemic, the volume of e-commerce logistics activity has been growing rapidly. However, a literature review for this study indicated that there is a lack of research on commerce logistics service quality. This study intends to fill this gap in the literature. It aims to identify the e-commerce logistics service quality factors that affect customer satisfaction. It is also interested in identifying if there is any relationship between the satisfaction of e-commerce customers and their loyalty. Data from 1562 e-commerce customers living in Turkey were collected via a web-based survey. The results were analysed using structural equation modelling. Timeliness, order condition, order accuracy, and order discrepancy handling were found to have a positive effect on customer satisfaction. A positive relationship between customer satisfaction and customer loyalty was also found.
Fatores associados ao desenvolvimento de sepse em pacientes internados em terapia intensiva cirúrgica: estudo retrospectivo/Factors associated with the development of sepsis in patients hospitalized in intensive surgical therapy: a retrospective study
Authors: Figueredo de Araújo Freitas Mariana , Marinho Picanço Carina , Idalina de Assis Ylara , Pereira da Hora Assis Minéia
Published: December 2021

Objetivo: verificar a associação entre os fatores de risco e o desenvolvimento de sepse em pacientes cirúrgicos ou hemodinâmicos internados em uma unidade de terapia intensiva (UTI) cirúrgica. Métodos: estudo de corte transversal, de abordagem retrospectiva, realizado na UTI cirúrgica de um hospital de grande porte, no período de janeiro a abril de 2018, com uma amostra final de 113 internamentos. Os dados foram coletados em prontuários, transcritos para formulários de coleta e, em seguida, tabulados e analisados por meio do programa Statistical Package for the Social Sciences (SPSS), versão 22.0.Calcularam-se razão de prevalência (RP), Qui-quadrado de Pearson e teste exato de Fisher, considerando estatisticamente significantes os resultados com o valor de p<0,05. Resultados: a sepse teve uma prevalência de 8% na unidade de estudo e uma associação estatisticamente significativa com o tempo de internamento prolongado na UTI (RP=21,1; IC=2,759-162,316; p=0,000) e a ocorrência de óbito (RP=6,6; IC=2,375-18,357; p=0,005). Conclusão: os dados encontrados poderão estimular a realização de novas pesquisas, cooperando com a produção científica e a discussão sobre a temática, refletindo positivamente na prática assistencial, especialmente em terapia intensiva.
Tecnologias educacionais para o ensino de primeiros socorros a pais e educadores: revisão integrativa/Educational techonologies for teaching first aid to parents and educators: an integrative review
Authors: Alves de Moura Vitória , Pinheiro Fabricio Formiga Natália , De Moraes Bezerra Adriana , Silva Santana Kelly Fernanda , Feitosa de Matos José Hiago , Mendes de Paula Pessoa Vera Lúcia , Maria Sales da Silva Lucilane
Published: December 2021

Objetivo: Analisar as evidências científicas sobre estudos de elaboração e/ou validação de tecnologias educacionais para o ensino de primeiros socorros a pais e educadores. Método: Estudo de revisão integrativa, com questão de pesquisa elaborada pela estratégia PICo – População, Interesse, Contexto, selecionando-se os descritores “Parents”, “SchoolTeachers”, “First Aids”, “Teaching Material”, “Educational Techonology’, “Validation Study”. Realizou-se a busca em seis fontes de literatura científica, no período de junho de 2021. Aplicaram-se os critérios de inclusão e exclusão, em seguida, os dados foram extraídos por formulário próprio, avaliados por nível de evidência, analisados e interpretados pelo método de redução dos dados.  Resultados: A amostra final quantificou seis estudos, com níveis de evidência científica baixo a moderado, que se destacam pela diversidade entre as tecnologias educacionais do tipo cartilha, calendário, folheto, pôster e história em quadrinhos para pais e educadores que tratam do ensino de primeiros socorros. Conclusão: Observou-se escassez de estudos de elaboração e validação de tecnologias educativas em primeiros socorros para pais e educadores. Recomenda-se investir em tecnologias educativas validadas de fácil acesso e leitura e, ainda, que permitam o uso em recursos informatizados, de modo a ampliar o acesso da população e abranger acidentes e incidentes vivenciados nos ambientes doméstico e escolar.
Caracterização dos casos de COVID-19 em pacientes críticos: revisão de escopo/ Characterization of COVID-19 cases in critically ill patients: scoping review
Authors: De Souza Costa Thatiane Monick , Gurgel dos Santos Kauanny Vitoria , Dos Santos Oliveira Eloysa , Vilar Soares da Silva Bruna , Bezerra de Melo Evelin Beatriz , Assis Neves Dantas Rodrigo , Vieria Dantas Daniele
Published: December 2021

Introdução: A principal causa de mortalidade pelo novo coronavírus é a insuficiência respiratória. Assim, os cuidados intensivos devem ser prontamente prestados ao paciente crítico. Objetivo: Explorar as evidências acerca dos achados clínicos, tratamento e desfecho de pacientes infectados pelo Sars-CoV-2 internados em Unidades de Terapia Intensiva. Método: Revisão de escopo, realizada em abril de 2021, em oito fontes de dados nacionais e internacionais, conforme orientações do Instituto Joanna Briggs, seguindo o checklist Preferred Reporting Items for Systematic reviews and Meta-Analysesextension for Scoping Reviews, sem restrição de idioma ou temporal. Adotou-se a estratégia Population, Concept and Contextpara a elaboração da questão de pesquisa. Resultados: Incluíram-se 15 artigos científicos, com predominância de publicações na China, Estados Unidos da América e Canadá. Dos estudos, 80% foram com adultos e idosos em Unidade de Terapia Intensiva. Os principais achados clínicos foram febre, tosse, Síndrome do Desconforto Respiratório Agudo e lesão renal, tratamento com ventilação mecânica invasiva e não invasiva, oxigenoterapia de alto fluxo e corticoesteroides. Como principal desfecho, o óbito. Conclusão: A maioria dos pacientes apresentou febre, tosse e Síndrome do Desconforto Respiratório Agudo, recebendo cuidados como ventilação mecânica, oxigenoterapia de alto fluxo e corticoesteroides, com alto índice de óbitos.
Suicídio por autointoxicação entre adolescentes e adultos jovens brasileiros: estudo de séries temporais/ Suicide by self-poisoning among brazilian adolescents and young adults: time-series study
Authors: Nascimento Frantielen Castor dos Santos , Marcon Samira Reschetti , Freitas Bruna Hinnah Borges Martins de , Kogien Moisés , Lima Nathalie Vilma Pollo de
Published: December 2021

Objetivo: analisar a tendência temporal da mortalidade por autointoxicação entre adolescentes e adultos jovens brasileiros no período de 2000 a 2017.  Método: estudo de séries temporaisda mortalidade por suicídio por autointoxicações (X60 a X69) entre adolescentes e jovens adultos, entre os anos de 2000 a 2017. Calcularam-se os coeficientes de mortalidade por 100.000 habitantes e mortalidade proporcional. Optou-se pela regressão linear de Prais-Winster para análise de tendência. Resultados: percebeu-se uma linearidade na tendência da mortalidade geral por suicídio nessa população. Evidenciou-se uma tendência decrescente entre os indivíduos do sexo feminino, das faixas etárias de 15 a 19 anos e 20 a 24 anos, das regiões Nordeste e Centro-Oeste e que adotaram métodos de suicídio por pesticidas e produtos químicos ou substâncias nocivas não especificadas. Destacou-se também uma tendência crescente da mortalidade pelo uso de todas as classes medicamentosas analisadas, solventes orgânicos e outros inalantes. Conclusão:este estudo identificou um aumento considerável na utilização de medicamentos einalantes como método para o suicídio entre adolescentes e adultos jovens.
Is relaxation exercise therapy effective in the management of patients with severe arterial hypertension?
Authors: Lebedeva Olga. D. , Achilov Abduahat A. , Mavlyanova Zilola F. , Baranov Alexey V. , Achilova Shachnosa A. , Sanina Natalia P. , Fesyun Anatoly D. , Rachin Andrey P. , Yakovlev Maxim Yu. , Terentev Kirill V. , Reverchuk Igor V. , Velilyaeva Alie S. , Maccarone Maria Chiara , Masiero Stefano
Published: December 2021

Arterial hypertension (AH) is a burning problem in the world. Antihypertensive pharmacological therapy combined by physical exercises is well-studied in patients with mild and moderate AH. However, studies that have investigated relaxation in patients with severe AH in addition to drug therapy are lacking. Optimization of a comprehensive treatment for patients with severe AH, by using a multicomponent rational antihypertensive pharmacotherapy (PT) with subsequent application of relaxation exercise therapy (RET). The study involved 32 male patients with severe AH. Initially, clinical-instrumental and laboratory examination, blood pressure registration and daily arterial blood pressure monitoring were carried out. Suitable PT was selected for all the patients. 3 months after starting PT the patients were divided in 2 groups. The patients of the 1st group were prescribed RET in addition to PT. The 2nd group of patients continued receiving PT alone. 3 months later, average daily blood pressure (ADBP)-syst and ADBP-diast were compared in both groups. Three months after PT both groups demonstrated a significant decrease in ADBP-syst and ADBP diast, but these indicators remained higher than normal and did not reach the target level. Three months after the inclusion of RET in the comprehensive treatment, the 1st group demonstrated a significant decrease in ADBP (systolic and diastolic), not only in comparison with the initial data, but also with the data observed three months after PT. After 6 months, ADBP-syst and ADBP-diast in the 1st group were significantly lower compared with those of patients in the 2nd group. The inclusion of RET in addition to a multicomponent antihypertensive PT is a promising treatment option for severe AH.
Pulmonary anaplastic large-cell lymphoma
Authors: Padhi Somanath , Panigrahi Manoj Kumar , Mohapatra Sonali , Mishra Pritinanda , Patra Susama , Sable Mukund Namdev , Thakur Bhaskar , Nayak Mamita , Panigrahi Ashutosh
Published: December 2021

We describe a case of ALK1 negative (–) pulmonary anaplastic large-cell lymphoma (pALCL) in an adult female with an unfavorable outcome following combination chemotherapy and present a systematic review of 39 such sporadic cases reported over the past 28 years (1990–2018). pALCL occurred in 26 males and 13 females (median age, 43 years [5–81]) and 13/39 (33.33%) were ≤18 years. The lesions were endobronchial in 21 (53.85%) and parenchymal in 18 (46.15%) cases. Twenty-six cases were ALK1-; 13 were ALK1+ (positive); and 27/34 cases had a T cell phenotype (where tested). ALK- cases were characterized by higher age (P = 0.012) at presentation, more B symptoms (P = 0.002), and more parenchymal than endobronchial lesions (P = 0.039). The median survival (N = 29/39) was 60 months; pediatric group had a better survival than adult/elderly group (log-rank, P = 0.026). pALCL is rare and may have a distinct biological behavior.
Evaluation of expression level and methylation profile of CXX1 gene in breast cancer tissue blocks
Authors: Mohammadi Zahra , Azad Mehdi , Foroughi Farshad , Khojastehpour Sahar , Gheibi Nematollah , Samiee-Rad Fatemeh , Maali Amirhosein , Ahmadi Mohammad Hossein
Published: December 2021

Aims:

The hypermethylation of CpG islands in the promoter of tumor-suppressor genes (TSGs) leads to silencing the transcription of tumor suppressors, which lead to the development of cancer. The hypermethylation of CXX1 and CDH1 genes, as TSGs, plays an essential role in the development of various types of cancer, i.e., colorectal and gastric cancer. This study aims at evaluating the expression level of CXX1 and CDH1 genes and the methylation status of CXX1 CpG island's promoter in breast cancer (BC).

Materials and Methods:

In this study, the expression level of the CXX1 and CDH1 genes and the promoter methylation status of the CXX1 gene were evaluated in 30 paraffin-embedded tissue blocks of malignant BC and 18 benign breast lesions, using quantitative reverse transcription-PCR and methylation-specific (MS)-PCR assays, respectively.

Results:

The CXX1 gene was downregulated in the malignant tissues due to the hypermethylation of the CpG islands in the promoter, compared to the control group (P = 0.031). The downregulation of CDH1 gene expression was observed in the patient group compared to control, but this reduction was not statistically significant. The results show that the risk of BC is increased with aging (P < 0.001). Furthermore, the benign breast lesions (controls) had more mobility in comparison with the malignant breast tumors (P < 0.001). In the malignant samples, the size of the mass was larger than control's mass samples (P = 0.006).

Conclusions:

In the pathophysiological state of BC, the aberrant DNA hypermethylation in CpG island of CXX1 promoter is responsible for the reduction of its expression level in BC patients.
A rare synchronous presentation of double primary malignancies – lung and prostate
Authors: Sarkar Sujata , Chaudhuri Tamohan , Roy Shravasti , Bose Sabyasachi
Published: December 2021

Synchronous (SC) diagnosis of double primaries is not very rare in this era of advanced technology where underlying malignancies can easily be detected by the modern imaging techniques. However, the treatment of such patients is quite challenging and often a therapeutic dilemma. A 74-year-old male smoker with no significant past or family history, presented with cough, hemoptysis, and difficulty in voidance of urine within 1 month of each other, i.e., SC presentation. Abnormalities were detected on the clinical examination and radiological imaging in the lung and prostate, which confirmed to be double primary malignancies of different histology on histopathology and immunohistochemistry, i.e., adenocarcinoma prostate and squamous cell carcinoma of the right lung.
Molecular profiling and utility of cell-free DNA in nonsmall carcinoma of the lung
Authors: Ghosh Moupali , Mukhopadhyay Madhumita , Das Chhanda , Chatterjee Surojit , Naskar Bidisha Ghosh
Published: December 2021

Background:

Lung carcinoma accounts to the most common cause of cancer globally. Optimal management of nonsmall cell lung carcinoma (NSCLC) requires prognostic biomarkers that help in targeted therapy and identification of tumor subsets with a distinctive molecular profile that can foretell response to therapy. Quantitative analysis of circulating cell-free DNA is considered as a possible aid for lung cancer screening.

Aims and Objectives:

The main aim of our study was detection of the clinicopathological spectrum of NSCLC, immunohistochemical (IHC) study of lung adenocarcinoma with epidermal growth factor receptor (EGFR), anaplastic lymphoma kinase (ALK), and molecular expression of EGFR mutation using Formalin fixed paraffin embedded tissue (FFPE) and cell-free DNA (cfDNA) from blood samples.

Materials and Methods:

It was a prospective and observational study conducted in the Department of Pathology in association with the Department of Chest Medicine in a tertiary care hospital for 18 months, done on 50 patients. Histological subtyping of lung carcinomas was done, followed by IHC analysis using P40, thyroid transcription factor (TTF1), EGFR, and ALK. Molecular analysis for EGFR mutation was done using FFPE and cfDNA from the patient's blood samples.

Results and Analysis:

On histological subtyping, majority (66%) of the cases were found to be adenocarcinoma. All adenocarcinoma (66%) cases show TTF1 positivity and all squamous cell carcinoma (32%) cases show P40 positivity. All the ALK-positive (6%) cases were never smokers and histologically diagnosed as adenocarcinoma. About 58% of the NSCLC cases were found to be EGFR IHC positive. Formalin-fixed paraffin tissue (FFPE) showed EGFR mutation in 32% cases, of which majority were deletion (19, 28%) and rest (4%) of the cases involving mutation in exon 21. From cfDNA, mutations were noticed in 16% of the cases where majority involved deletion 19 (12%), whereas the rest of the cases were positive for missense mutation in exon 21 of the EGFR gene (2%) and compound heterozygous mutation involving deletion 19 and missense mutation for exon 21 (2%). On correlation of EGFR mutation studies from FFPE with that of cfDNA analysis, the study was statistically significant (P = 0.000).

Conclusion:

This study reports clinicopathological, immunochemical, and molecular analysis of EGFR among NSCLC cases. EGFR mutation detection from cfDNA has its advantage of being a noninvasive technique to avoid rebiopsy in cases of the progressive disease to detect resistance to a drug and emergence of a newer mutation. Mutation detection from FFPE samples still remains the gold standard for targeted therapy using EGFR tyrosine kinase inhibitors. ALK rearrangement detection using IHC serves as an adjunct to EGFR diagnosis.
A sharpened form of Adams-type inequalities on higher-order Sobolev spaces : a simple approach
Authors: Chen Lu , Lu Guozhen , Zhu Maocun
Published: December 2021

In this paper, we develop an extremely simple method to establish the sharpened Adams-type inequalities on higher-order Sobolev spaces
$W^{m,\frac {n}{m}}(\mathbb {R}^n)$
in the entire space
$\mathbb {R}^n$
, which can be stated as follows: Given
$\Phi \left ( t\right ) =e^{t}-\underset {j=0}{\overset {n-2}{\sum }} \frac {t^{j}}{j!}$
and the Adams sharp constant
$\beta _{n,m}$
. Then,
$$ \begin{align*}\sup_{\|\nabla^mu\|_{\frac{n}{m}}^{\frac{n}{m}}+\|u\|_{\frac{n}{m}}^{\frac{n}{m}}\leq1}\int_{\mathbb{R}^n}\Phi\Big(\beta_{n,m} (1+\alpha \|u\|_{\frac{n}{m}}^{\frac{n}{m}} )^{\frac{m}{n-m}}|u|^{\frac{n}{n-m}}\Big)dx<\infty, \end{align*} $$
for any
$0<\alpha <1$
. Furthermore, we construct a proper test function sequence to derive the sharpness of the exponent
$\alpha $
of the above Adams inequalities. Namely, we will show that if
$\alpha \ge 1$
, then the above supremum is infinite.

Our argument avoids applying the complicated blow-up analysis often used in the literature to deal with such sharpened inequalities.
SPATIAL-TEMPORAL DISTRIBUTION OF POLYCHAETA IN URBANIZED SANDY BEACHES OF NORTHEASTERN BRAZIL: TOOLS FOR ENVIRONMENTAL ASSESSMENT
Authors:   Universidade Federal do Rio Grande, Santos Marcos Eduardo Miranda , Costa e Silva Cláudia ,   Universidade Estadual do Maranhão, Azevedo-Cotrim Andrea Christina Gomes de
Published: December 2021

In the last years, the use of Polychaeta as indicators of marine pollution has intensified, due to the sensitivity of these organisms to environmental variations and their significant presence in quantitative and qualitative terms when compared to other benthic fauna organisms. We aimed to analyze the Polychaeta assemblage of two urbanized beaches in São Luís – Maranhão (Brazil), focusing on spatial-temporal distribution and look for the relation of the species sampled and possible contamination to indicate if they are suitable for environmental assessment. Sediment collection was carried out in the intertidal zone of both beaches in dry (September and November/2015) and rainy periods (March and May/2016). The samples were screened for extraction of the species, which were classified at the lowest possible taxonomic level. The samples revealed the following taxa: Lumbrineridae (Scoletoma tetraura), Nereididae (Laeonereis culveri) and Spionidae (Scolelepis sp.). The diversity and abundance of Polychaeta were greater on Caolho Beach. On these beaches, organic enrichment is not the determining variable in the structure of the Polychaeta assembly. Other studies are needed to improve the knowledge on other macrofauna species of the studied areas, comparing the richness among microhabitats and seasons, and thus elaborate conservation strategies for these ecosystems; and to test the hypothesis of the influence of tourism on this assemblage.
NATURAL HISTORY NOTES ON INTERACTIONS AND ABNORMAL COLORATION IN CARNIVORES IN THE ARAUCARIA FOREST, SOUTHERN BRAZIL
Authors:   Universidade do Estado do Rio de Janeiro, Aximoff Izar , Hübel Marcelo ,   Usina Rio Vermelho de Energia Ltda, Freitas Antônio Carlos de , Rosa Clarissa ,   Instituto Nacional de Pesquisas da Amazônia, Caravaggi Anthony ,   University of South Wales
Published: December 2021

Carnivores typically exhibit cryptic behavior, which makes it difficult to study the ecology of species in this group. Camera trap bycatch can be a valuable source of important opportunistic records. In this short communication, we present rare records of carnivores in southern Brazil. The first record was of a tayra (Mustelidae) with anomalous coloration known as leucism. Other records were of a possible attempted predation event by two free-ranging dogs on lowland tapir (Perissodactyla, Tapiridae), a threatened species. Our remaining notable records consisted of intra and interspecific interactions of endangered felids (puma, ocelot and southern tiger cat).
ICTIOFAUNA DE POÇAS DE MARÉ EM TERRAÇOS CONSOLIDADOS DO LITORAL AMAZÔNICO BRASILEIRO
Authors:   Universidade Federal do Maranhão, Aguiar Rayane Gonçalves , Guimarães Erick Cristofore ,   Universidade Federal do Oeste do Pará, Brito Pâmella Silva de , Ottoni Felipe Polivanov , Nunes Jorge Luiz Silva
Published: December 2021

As poças de maré são formadas pelo represamento de massas d’água durante a vazante e a sua troca ocorre ao longo de cada ciclo de marés, configurando em um ambiente explorado por várias espécies. A ictiofauna é um componente das poças de maré, algumas espécies são totalmente adaptadas (e.g. plasticidade fisológica, tamanho reduzido) e seu ciclo de vida ocorre apenas nas poças de maré. Contudo, muitas espécies utilizam as poças de maré em algumas fases do ciclo de vida para fins de alimentação, refúgio e reprodução. Considerando que os inventários são fundamentais para o conhecimento da biodiversidade, nosso estudo investigou a assembleia de peixes em poças de marés da Praia do Araçagy no período de outubro de 2016 a abril de 2017. No total, nós registramos 409 exemplares, pertencendo a 13 espécies, distribuídas em 11 famílias e sete ordens. Espécies residentes e estuarinas de importância comercial foram dominantes. INTERTIDAL FISHES OF THE CEMENTED TERRACES FROM BRAZILIAN AMAZON COAST: Tidal pools are formed by the damming of marine water during an ebb tide and their exchange occurs along each tidal cycle, configuring an environment explored by several species. The ichthyofauna is one of the components of the tide pools, with some species being fully adapted (e. g. physiological plasticity, reduced size) and their life cycles occuring uniquely on this environment. However, most species use tide pools at some stage of their life cycle for feeding, refuge and reproduction. Considering the main role of faunal inventories for the increase in biodiversity knowledge, this study investigates the fish assemblage in tide pools at Praia do Araçagy from October 2016 to April 2017. In total, were recorded 409 specimens belonging to 13 species, distributed in 11 families and seven orders. Resident and estuarine species with commercial importance were dominant.
RECORD OF A LEUCISTIC PAMPAS FOX LYCALOPEX GYMNOCERCUS (CARNIVORA: CANIDAE) IN NORTHEASTERN OF ARGENTINA
Authors:   Universidad Nacional del Nordeste, Chatellenaz Mario Luis , Zaracho Elba Marlene
Published: December 2021

Leucism is a frequent chromatic mutation in mammals that causes partial or complete fur depigmentation. This type of mutation is interesting because they have physiological and ecological implications. We report here the first record of leucism in a pampas fox Lycalopex gymnocercus (Carnivora: Canidae), photographed using a camera trap in the northeast of the province of Corrientes, Argentina. Although cases of hypopigmentation are apparently very rare among pampas foxes, they could actually be more frequent than previously assumed. Given the ecological and physiological importance of these anomalies, researchers should report all records of this type in order to understand the degree to which these genetic variants are present in wild populations of different species of vertebrates.
NONVOLANT MAMMALS IN A FRAGMENT OF ARBOREAL CAATINGA IN NORTHEASTERN BRAZIL
Authors:   Universidade do Estado do Rio de Janeiro, Aximoff Izar , Medcraft John Philip ,   Verdes Pastos Ecological Reserve, Caravaggi Anthony ,   University of South Wales
Published: December 2021

The state of Paraiba is one of those with the most degraded Caatinga that presents the large gap of knowledge concerning the mammal fauna. Mammals are among the taxa most affected by this. In this sense, we evaluated non-volant mammals’ richness and composition between March 2013 and February 2020 in a Caatinga fragment (121 ha). We used active search (336 hours) and camera traps (1,200 night traps). We recorded 20 species, including four threatened ones. Carnivora was the most representative order (7 species), followed by Rodentia (4 species). The richness of non-volant mammals found represents 35.6 % of the total number of such species in the Caatinga. This species richness is greater than that found in other studies in the state. The presence of these mammal species was mainly due to the recovering vegetation that resulted from the great planting effort and also due to cessation of hunt, cattle and sheep breeding that had existed on the farm for over thirty years. Our findings highlight the importance of this particular reserve due to the large number of species registered.
Theoretical foundations of engineering. Tasks and problems
Authors:   International Science Group, Boiko Tetyana , Boiko Pavlo , Muzyka Natalya , Ключка Світлана , Сорока Мирослава , Чемерис Інгріда , Білик Людмила , Сич Віктор , Bereziuk Oleg , Lemeshev Mykhailo , Cherepakha Dmytro , Chovniuk Yurii , Moskvitina Anna , Shishina Masha , Kravchyuk Vladimir , Usenko Valerii , Vorontsov Oleg , Usenko Irina , Kodak Olga , Boyko Vladislav , Vasylenko Oleksandr , Moskalenko Кaterina , Stashenko Michail , Tanirverdiev Amil , El Echcheikh El Alaoui Douaa , Бабенцова Орина , Курілович Катерина , Сліпченко Валерія , Шаламова Катерина , Коваленко А. , Пузачова А. , Шаламова Катерина , Польщікова Н. , Марценюк О. , Жарська Мілана , Вербовецька Віталіна , Goolak Sergey , Petrenko Aleksandr , Lukashova Natalia , Shavkun Viacheslav , Fediushko Alexandr , Fedyushko Yuri , Azarkhov Alexande , Sili Ivan , Fediushko Marina , Gorobets Valery , Trokhaniak Viktor , Antypov Ievgeniy , Spodyniuk Nadiia , Kliuieva Oleksandra , Rusanov Serhii , Luniaka Klara , Kliuiev Oleh , Lys Stepan , Yurasova Oksana , Galyanchuk Igor , Идрисова А. , Рахымбеков А. , Horishnii Pavlo , Topchii Oksana , Shevchenko Іrina , Kotliar Yevgen , Petryna Alla , Taranchuk Alla , Pidchenko Sergey , Рижков Едуард , Синиціна Юлія , Станіна Ольга , Бернацький Артемій , Соколовський Микола , Сіора Олександр , Лукашенко Володимир , Шамсутдінова Наталія , Пимонов Игорь , Шевченко Валерий , Олейникова Александра , Погорелый Игорь , Щукін Олександр , Орел Олександр , Sigarev Evgen , Dovzhenko Oleksandr , Lobanov Yuriy , Chernyatevich Igor , Chubina Olena , Sapronova Svitlana , Vdovychenko Volodymyr , Ivanov Igor , Кара Інна , Карий Олег
Published: December 2021

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KAJIAN EFEKTIVITAS PEMANFAATAN MEDIA INTERNET DALAM METODE PEMBELAJARAN ONLINE
Authors: Harefa Yearning
Published: December 2021

Penelitian ini dilatarbelakangi oleh situasi saat ini, dimana akibat dari pandemi virus corona yang telah mewabah tidak hanya di Indonesia tetapi juga di seluruh dunia, telah memberikan pengaruh besar di segala bidang termasuk pendidikan. Pihak-pihak yang berkecimpung di bidang pendidikan harus memikirkan cara yang tepat dalam menyampaikan pembelajaran kepada siswa karena situasi saat ini mengharuskan setiap orang wajib menerapkan social distancing untuk menghentikan penyebaran virus. Metode pembelajaran jarak jauh dengan menggunakan internet merupakan satu-satunya cara yang dapat ditempuh, untuk menyampaikan pembelajaran kepada siswa. Namun, apakah metode tersebut cukup efektif untuk mencapai tujuan pembelajaran? Penelitian ini menggunakan metode literature review dengan mengumpulkan data dari jurnal dan buku. Oleh karena itu, penelitian ini mengkaji seberapa efektif penggunaan media internet dalam pembelajaran online? Tujuan dari penelitian ini adalah untuk mengetahui berbagai hasil penelitian mengenai pembelajaran online yang efektif dengan menggunakan media internet. Pemanfaatan media internet dalam pembelajaran online cukup efektif apabila: (1) didukung dengan pemberian motivasi yang tepat dan sesuai dengan kebutuhan siswa atau siswa. (2) Aplikasi yang digunakan disesuaikan dengan kebutuhan dan kemampuan mahasiswa atau mahasiswa dan dosen atau guru agar proses pembelajaran tidak terganggu dan tujuan pembelajaran dapat tercapai. (3) Tersedianya fasilitas yang memadai baik bagi siswa maupun staf pengajar.
POINT OF SALE PT. ISUINDOMAS PUTRA
Authors: Ika Syella Angel , Dewi Arie Rafika
Published: December 2021

Di suatu perusahaan, penggunaan teknologi komputer dapat membantu kinerja suatu perusahaan berjalan. Salah satu proses yang dikelola adalah pengolahan data menggunakan komputer. digunakannya komputer dapat memberikan informasi tanpa perlu perhitungan dari microsoft excel. Informasi yang diberikan dapat meringankan pemilik perusahaan dalam menyesusn dan  mengembangkan masa depan. PT. Isuindomas Putra merupakan perusahaan yang bergerak di bidang penjualan sparepart mobil . perusahaan ini masih melakukan pencatatan penjulan, pembelian, pengeluaran serta stock masih menggunakan microsoft excel. PT. Isuindomas Putra terdapat beberapa kendala , baik itu masalah data penjualan, masalah dalam men-tracking sebuah transaksi, dan masalah dalam mengetahui jumlah stok barang yang bisa selisih serta masih banyak nama barang yang sama tapi belum mempunyai kode unik. Berdasarkan latar belakang yang ada penulis coba membuat aplikasi point of sale yang dapat membantu perusahaan untuk mengatasi masalah yang ada.
PEMANFAATAN TEKNOLOGI CLOUD COMPUTING PADA E-SPT DINAS KOMINFO KOTA MEDAN MENGGUNAKAN PHP NATIVE
Authors: Siregar Muhammad Ardi , Siregar Yunita Sari , Khairani Mufida
Published: December 2021

Dalam proses pembuatan surat perintah tugas, dinas kominfo kota medan saat ini masih melakukan secara sederhana  dengan pencatata manual menggunakan bantuan microsoft office dan microsoft excel. Hal ini mengakibatkan sistem menjadi kurang efektik dan efesien baik segi materi maupun waktu,terjadi kerusakan atau kehilangan data perjalanan dinas karena proses dan tata cara penyimpanan data yang tidak baik serta waktu pembuatan laporan perjalanan dinas yang cukup lama. Maka diperlukan suatu sistem komputerisasi yang sangat sesuai untuk mendukung kinerja dalam pengelolaan SPT, Sehingga dapat mengatasi permasalahan atau kendala pada sistem berjalan saat ini dengan memanfaatkan teknologi cloud computing serta menggunakan php native sebagai pemrograman dengan cara  pengamatan langsung, dan wawancara kepada pihak yang terkait menjadi analisa sistem yang digunakan untuk membangun sistem baru dalam penelitian ini. Dengan memanfaatkan sistem komputersisasi yang diusulkan ini secara baik kemungkinan adanya kesalahan dapat diminimalisasi serta pengolahan SPT menjadi lebih mudah.
Important Physical and Mechanical Properties of Dominant Potato Variety Widely Grown in Ethiopia
Authors: ALEMU Dereje
Published: December 2021

The physical attributes of agricultural product are utmost essential in developing technologies for different unit operations. Pertinent potato tuber attributes were studied. 100 samples of dominant and popular potato tuber varieties grown in Ethiopia which are free from any injuries from each variety were obtained from Holeta Agricultural Research Center. In this study, the physical attributes of potato tubers were determined at a moisture content of 70.75, 69.99, 71.75, 69.70 and 72.38% (wet basis) for Belete, Jalenie, Gera, Gudene and Chala varieties, respectively. Except specific gravity of potato tuber, other physical properties studied were significantly different at 5% of level of significance. Analysis of variance showed that there is also a significant difference in coefficient of static friction and angle of repose of all potato tuber varieties under four different materials and dynamic coefficient of friction under mild steel sheet metal and galvanized sheet.
Una aproximación a la escritura dramática femenina en Argentina: la afirmación de una mirada propia
Authors: Díaz Silvina
Published: December 2021

El presente artículo propone una aproximación a la escritura dramática producida por mujeres en Argentina entre la década del sesenta y del noventa con la finalidad de indagar cómo se configura una mirada crítica desde el género, un discurso femenino autónomo.

En vistas a ello, nos referimos a algunas dramaturgas paradigmáticas - Griselda Gambaro, Aída Bortnik, Susana Torres Molina, Cristina Escofet y Diana Raznovich- que, desde diversas poéticas, intereses estéticos e ideológicos, contribuyeron a la representación y la autorrepresentación de la mujer como un sujeto plural, atravesado y habitado por una complejidad de voces y de inscripciones personales, sociales, genéricas, culturales. Para la descripción y el análisis de las piezas dramáticas más representativas en este sentido partimos de una perspectiva historicista que tiene en cuenta tanto el contexto histórico social como la dinámica propia del teatro argentino.

En las décadas del sesenta y del setenta se verifica una notable limitación de la presencia de la mujer en el campo teatral nacional, no solo en lo que atañe a dramaturgas y directoras, sino también dentro de la gestión cultural, la recepción crítica y los jurados teatrales. Sin duda el convulsionado contexto sociopolítico obstaculizó el surgimiento y el desarrollo de un teatro propiamente femenino hasta el advenimiento de la democracia, momento en que comienzan a tratarse los hechos sociales teniendo en cuenta las diferencias genéricas que los atraviesan.

Por último, observamos que, abordando directamente cuestiones de género o bien movilizadas por las urgencias de una sociedad en crisis, con la intención de esbozar posibles respuestas o simplemente de plantear interrogantes, las autoras a las que aludimos buscan alejarse de los estereotipos y los modelos arquetípicos, interpelar las narrativas, quebrar los mandatos de silencio impuestos por las dictaduras o por la sociedad patriarcal.
Gothic Noir Filmic Male Gaze: Gender Stereotyping in Margaret Atwood’s “The Freeze-Dried Groom”
Authors: López Ramírez Manuela
Published: December 2021

Stereotyping has been crucial in artistic representations, especially cinema, in the construction of gender paradigms. Males and females have been portrayed by means of simplified unrealistic clichés with the purpose of controlling and constraining them into patriarchal roles and conventions, promoting societal normative ideologies. Noir women are projections of male anxieties about female sexuality and female independence. In “The Freeze-Dried Groom,” Atwood unveils gender stereotyping through a typically film noir male gaze in three of its stock characters: the femme attrapée, the “detective” and the femme fatale. Hence, Atwood depicts a femme fatale to reflect not just on this character in film noir, but also on female identity, gender dynamics and feminism. She exposes and questions the marriage-family institution, and the patriarchal society as a whole.
Enfance et didactique des identités de genre dans Plus sage que le roi de Béatrice Laure Mebou
Authors: Eyenga Onana Pierre Suzanne
Published: December 2021

Le conte écrit s’offre en Afrique comme un vecteur essentiel dans l’éducation holistique des masses à l’éthique. L’enfant y joue parfois le rôle du didacticien avisé, travaillant au renouvellement des identités de genre face au patriarcat ambiant. Quelles stratégies convoque-t-il pour postuler des rapports sociaux de genres neufs ? La sociocritique de Pierre Barbéris oriente la présente réflexion organisée en deux parties. D’abord, on explore l’explicite en questionnant la didactique qui sous-tend la démarche de l’enfant. Ensuite, grâce à l’implicite, on scrute l’esthétique qui structure la production du sens et fonde le discours sur le monde de Béatrice Laure Mebou.
Was kosten Studienvisa? Eine global vergleichende Analyse
Authors:   Europa-Universität Flensburg, Deutschmann Emanuel
Published: December 2021

Für internationale Studierendenmobilität ist oft ein Visum nötig. Die Kosten dafür variieren enorm, wie Daten des Global Mobilities Project (GMP) zeigen. So zahlen Studierende aus dem Globalen Süden teils mehr als das Doppelte als Studierende aus Europa. Noch größer sind die Unterschiede, wenn man das Wohlstandsniveau berücksichtigt: Während die Kosten für Studierende aus Westeuropa im Schnitt nur dem Bruchteil eines durchschnittlichen Tageseinkommens entsprechen, müsste man z.B. in Zentralasien fast drei, in Subsahara-Afrika sogar mehr als fünf Wochen arbeiten, um sich ein Visum leisten zu können. Es ergibt sich insgesamt also eine paradoxe Situation: Studierende aus reicheren Ländern müssen weniger bezahlen, wenn sie international mobil sein wollen. Diese globalen Ungleichheiten berühren bedeutsame Aspekte individueller Ungerechtigkeit und weisen auf die Dysfunktionalität von Visaregimes, die internationale Mobilität talentierter Menschen aus dem Globalen Süden strukturell einschränken.
Plataformas de Financiamiento Fintech
Authors: Décaro Santiago Laura Angélica , Soriano Hernández María Guadalupe , López Chau Asdrúbal , Benítez Guadarrama Juan Pedro
Published: December 2021

Las Plataformas de Financiamiento Fintech  (PFFs) han revolucionado la forma en que se otorgan créditos a nivel mundial, generando un gran interés por su estudio. En este sentido, se realizó un artículo de revisión, cuyo objetivo es describir el estado actual de la investigación científica sobre las PFFs, a través de la recuperación de documentos científicos de impacto y de autores prolíficos en el tema.

Entre los principales hallazgos se identifica que ha iniciado la ola de investigación con evidencia empírica, aunque escasa del tipo cuantitativo, limitándose al análisis de un reducido número de PFFs de Estados Unidos y China. Con ello, salen a la luz diferencias entre estos dos países, centradas en el tipo de datos que exponen a los inversionistas, los inversionistas, la homogeneidad entre PFFs  y el enfoque de investigación.

Asimismo, se observan más artículos enfocados hacia las PFFs que satisfacen el consumo, sin embargo se visualizan algunos estudios empíricos, sobre otras, cuyo objetivo es financiar empresas o proyectos, esto en la región Europea. Finalmente, los científicos enfatizan que las variables que tienen mayor incidencia en el crecimiento de las PFFs son la incorporación tecnológica y la posición privilegiada en el tema de regulación..
ESTIMATION OF GROSS-STRUCTURE PARAMETERS OF GIANT DIPOLE RESONANCE: 2. EXPERIMENTAL TESTING
Authors: Dikiy N.P. , Zakharchenko A.A. , Lyashko Yu.V. , Uvarov V.L. , Shevchenko V.A. , Tenishev A.Eh.
Published: December 2021

Experimental testing of a novel technique for determination of width and maximum of excitation function of a photonuclear reaction with dominant giant dipole resonance is conducted. The method is based on measurement of normalized reaction yield in a thin target, overlapping entirely a flux of X-rays and on processing of data obtained with the use of a developed analytical model. For the checking of method, the nickel and molybdenum foils of natural isotopic composition were activated by bremsstrahlung radiation at four energies of the electron beam in the range 40…95 MeV. The obtained parameters of cross-section of the reference reactions 58Ni(γ,n)57Ni and 100Mo(γ,n)99Mo are in good agreement with those presented in the available databases.
MAGNETIC FIELD DYNAMICS IN PLASMA OPENING SWITCH
Authors: Manuilenko O.V. , Onishchenko I.N. , Pashchenko A.V. , Pashchenko I.A. , Soshenko V.A. , Svichensky V.G. , Yuferov V.B. , Zajtsev B.V.
Published: December 2021

Computer simulations for magnetic field penetration into plasma of plasma opening switch (POS), and current loop formation in it are presented for various initial plasma densities, currents, and POS geometries. It is shown that the current loop dynamics in the POS is determined by the fast magnetic field penetration in plasma due to the Hall effect. The strong dependence of the current loop longitudinal velocity on the transverse coordinate, together with the influence of the boundary conditions at the POS cathode and anode, lead to the formation of the narrow S-shaped current loop even in a homogeneous plasma. It is shown that the control parameters influencing the dynam-ics of the magnetic field and the motion of the current loop in the POS are the initial plasma density, driving current and cathode radius. The POS resistance is calculated for wide range of initial plasma densities, currents, and cath-ode radiuses. It is shown, that POS resistance is proportional to the total current, inversely proportional to plasma density, and is in the range 10-3…1 Ω for plasma densities 1012…1015 cm-3.
THE INFLUENCE OF CATHODE MATERIAL ON THE CHARACTERISTICS OF PULSED NEGATIVE CORONA IN OXYGEN
Authors: Golota V.I. , Kadolin B.B. , Taran G.V. , Pashchenko I.A.
Published: December 2021

Change in time for the shape of the discharge current pulses of the pulsed negative corona in oxygen with cop-per and stainless steel cathodes has been studied for two discharge modes. The change lies in the decrease of the pulse amplitude and duration at half maximum. It is shown that for stainless steel cathodes, the amount of electric charge transferred in one pulse of the discharge current is 15% greater than for copper cathodes. It is also shown that under the maximum load mode, the amount of charge transferred in one pulse of the discharge current is de-creased with time by 10% for both types of cathodes. It is shown that ozone synthesis in the electrode system with copper cathodes is 25% more efficient.
INVESTIGATION OF PLASMOCHEMICAL DISSOCIATION OF HYDROGEN SULFIDE IN INTENSIVE SWIRL FLOWS
Authors: Znak Z.O.
Published: December 2021

The process of plasmochemical decomposition H2S in a rotating reactor is studied. The generation of ultrahigh-frequency radiation in pulsed mode was synchronized with the rotation of the rotor. The influence of the rotor speed on the formation of the region of existence of a plasma discharge in the reactor and separation of H2S de-composition products are established. The content of hydrogen and hydrogen sulfide in the gas phase was analyzed at different points of the reactor along its radius. The concentration of H2 and H2S was determined by chromatog-raphy.
MODELING OF OSCILLATORY AND ROTARY TRAJECTORIES OF ELECTRONS IN GRADIENT MAGNETIC FIELD MAGNETRON GUN
Authors: Mazmanishvili A.S. , Reshetnyak N.G.
Published: December 2021

The motion of electrons in cylindrical magnetic field with variable strength along the axis is considered. The formation of a beam with energy of 55 keV in the longitudinal direction during its transport in solenoidal magnetic field with large gradient has been studied. The bifurcation regimes of the dynamics of particles during their move-ment along the transport axis both forward to the target and back to the cathode region are considered. The operat-ing modes of the gun are obtained, in which the particle experiences the "bottleneck" effect and returns to the cath-ode region. It is shown that for given electron energy and fixed magnetic field, the parameter that determines the reflection of the particle is the polar angle of entry with respect to the axis of the cylindrical magnetic field. The re-sults of numerical simulation on the motion of the electron flow are presented.
ON-LINE LUMINESCENT DOSIMETRY OF PRODUCT PROCESSING MODE AT AN ELECTRON LINAC
Authors: Pomatsalyuk R.I. , Romanovsky S.K. , Shevchenko V.A. , Tenishev A.Eh. , Titarenko Yu.A. , Titov D.V. , Titov V.Yu. , Uvarov V.L.
Published: December 2021

Radiation-technological processes on the basis of electron accelerators, in particular, sterilization of medical de-vices, are regulated by international standards. The distribution of the electron flux density and absorbed dose are the main parameters of such processes, that require constant monitoring. In this work, we investigated the possibil-ity to determine in real time the absorbed dose profile on the surface of an object processed using the effect of ca-thodoluminescence, that occurs when the electron flux acts on technical materials (mainly amorphous dielectrics). The results of calibration of the cathodoluminescent radiators of different composition against the absorbed dose measured by a calorimetric method are presented. The study of the novel technique at an LU-10 electron Linac of NSC KIPT made it possible to identify the sources of uncertainty and evaluate their contribution to the dose meas-urement.
Preguntas conceptuales para la enseñanza entre pares en Física Biológica
Authors: Martínez Daniel Alfredo
Published: December 2021

La metodología de enseñanza entre pares (EEP)  ha sido aplicada con éxito en muchas universidades para la enseñanza de diversas disciplinas. Si bien se encuentran en la Web bases de datos con preguntas conceptuales utilizadas en esta metodología para la Física, la Química, la Biología, la Astronomía, las Geociencias y las Matemática, no se han desarrollado preguntas de este tipo para la Física Biológica. Se presentan aquí algunos ejemplos de preguntas conceptuales para esta disciplina aplicada. Las mismas están siendo empleadas en cursos de Física de los Procesos Biológicos de las carreras de Medicina Veterinaria y del Profesorado de Biología de la Universidad Nacional de Río Negro. Se observó que esta estrategia permite durante el desarrollo de los contenidos detectar dificultades en el aprendizaje y corregirlas. Por lo tanto se espera que a través de esta comunicación se difunda esta modalidad de enseñanza y surja la inquietud de que las preguntas conceptuales presentadas sean usadas en otras instancias educativas.