bluuebunny/crossref_metadata_2025 huggingface dataset:
Proteomics Analysis of Trastuzumab Toxicity in the H9c2 Cardiomyoblast Cell Line and its Inhibition by Carvedilol
Authors: Beiranvand Elham , Torkashvand Fatemeh , Ostad Seyed N. , Mirzaie Mehdi , Ardakani Esmat M. , Zandi Fatemeh , Sardari Soroush , Salekdeh Ghasem H. , Shokrgozar Mohammad A. , Vaziri Behrouz
Published: May 2020

Objective:

Heart dysfunctions are the major complications of trastuzumab in patients with
Human Epidermal growth factor Receptor-2 (HER2)-positive breast cancers.

Methods:

In this study, the cytotoxicity of trastuzumab on H9c2 cardiomyoblasts was demonstrated,
and the proteome changes of cells were investigated by a tandem mass tagging quantitative approach.
The Differentially Abundant Proteins (DAPs) were identified and functionally enriched.

Results:

We determined that carvedilol, a non-selective beta-blocker, could effectively inhibit
trastuzumab toxicity when administrated in a proper dose and at the same time. The proteomics analysis
of carvedilol co-treated cardiomyoblasts showed complete or partial reversion in expressional levels
of trastuzumab-induced DAPs.

Conclusion:

Downregulation of proteins involved in the translation biological process is one of the
most important changes induced by trastuzumab and reversed by carvedilol. These findings provide
novel insights to develop new strategies for the cardiotoxicity of trastuzumab.
Would Some Herbal Teas Play a Medicating Role for Certain Diseases?
Authors: Sattar Tabinda
Published: May 2020

Herbal Teas prepared from leaves, roots, fruits, and flowers of different herbs contain
many useful nutrients that may be a good replacement for medicating certain diseases. These herbal
teas are very rich in poly-phenols, therefore are significant for their antioxidant, anti-inflammation,
anticancer, anticardiovascular, antimicrobial, antihyperglycemic, and antiobesity properties. Medical
chronic conditions, such as cardiovascular diseases, cancer, Alzheimer’s disease, Parkinson’s disease,
constipation, diabetes, and bed wetting in children can be easily cured by the use of these herbal
teas in regular and moderate amounts. This review focuses on the diverse constituents of herbal teas
due to which these can be an attractive alternative towards promoting human health.
Morphology and histology of the male reproductive system of Collaria oleosa (Distant, 1883) (Heteroptera: Miridae)
Authors: Vélez Mayra , Dias Glenda , Morales Irina , C. Guedes Raul N. , Lino-Neto José
Published: May 2020

Collaria oleosa (Distant, 1883) is a phytophagous bug often observed causing injuries in wheat, barley, and oat crops, besides grass pastures. The male reproductive system of C. oleosa has been studied anatomically and histologically. It consists of a pair of testes, each one with two follicles, one pair of seminal vesicles, two pairs of external accessory glands, and an ejaculatory bulb. The testicular follicles exhibit cysts with spermatogonia, spermatocytes, spermatids, and spermatozoa bundles. The testes are connected to the seminal vesicles by the vas deferens. The seminal vesicles are connected to the ejaculatory bulb and are bound by the accessory glands. In mirids belonging to the Stenodemini tribe, the general morphology of the male reproductive system is similar. However, two follicles per testis may be characteristic of the genus Collaria. The anatomy and histology of the male reproductive system in C. oleosa provides new information and also contributes to the understanding of the systematics of Stenodemini as well as the Miridae family in general.
COVID-19: An effective vaccine is needed
Authors: Hermida Lisset , Silva Ricardo
Published: May 2020

A novel coronavirus named SARS-CoV-2 is responsible for the present pneumonia outbreak called COVID-19 that started in early December 2019 in Wuhan City, Hubei province, China. Until March 12, SARS-CoV-2 had caused 80980 infections and 3173 deaths in China, but even worst, it is currently spreading fast in other countries, reaching 45293 infections and 1460 deaths outside China, being the most affected countries Italy, Iran and South Korea
Hipercoagulabilidad, trombosis intravascular y trombocitosis asociada al COVID-19. Reporte de un caso
Authors: Jara González Fernado Esteban , Jimenez Alulima Glenda de Fátima , Sananay Auquilla Erika Lizeth , Murillo Sanclemente José Carlo , Molina Vasquez Pedro Augusto , Vélez Páez Jorge Luis
Published: May 2020

Una nueva pandemia en el siglo XXI, generada por un agente viral del tipo coronavirus denominado SARS CoV-2, que produce la enfermedad COVID-19, la misma que debutó a finales del 2019 en China, con una mortalidad importante, que afecta el tracto respiratorio inferior y se manifiesta como neumonía en humanos.
A medida de su expansión mundial, el virus ha presentado mutaciones y por ende variantes fenitípicas que han generado cuadros clínicos que distan mucho de los síntomas descritos inicialmente; más bien, las alteraciones de la coagulación y la intensa inflamación (tormenta de citoquinas) han generado síntomas atípicos y enfoques terapéuticos diferentes; situando a la ferritina y el dímero D como biomarcadores cardinales para decidir anticoagulación y/o terapia anti inflamatoria como corticoterapia, el monoclonal anti IL6 Tocilizumab o el metotrexate, entre otros.
A continuación, presentamos el caso de un paciente diagnosticado de COVID-19 con RT-PCR, que presenta a más de sus manifestaciones respiratorias, un estado protrombótico que desencadenó trombosis intravasculares y posiblemente embolismo pulmonar, con valores elevados de ferritina y dimero D, que luego de anticoagulación y administración de corticoides superó su estado de gravedad extrema y egreso de Terapia Intensiva.
Nanoparticles functionalized for target delivery of siRNA in Lung cancerous cells
Authors: Caicho Jhonny , Mena Kevin
Published: May 2020

In the present medical field, scientists have designed new techniques to improve human health. These techniques focus on control at the molecular level. Small interference RNA is an example of genetic control. This, together with Dicer and Argonaute 2, do not allow the transcription process to synthesize new protein. By using this mechanism, it is possible to control some diseases that are responsible for metastasis, such as lung cancer. Some experiments were conducted to prove the effectiveness of this technique. However, the problem is how to introduce the double-strand RNA to the cells. The issue was solved using NPs as nanocarriers. This review paper aims at making a brief overview of lung cancer, the siRNA mechanism, and some different targeting techniques.
El SARS-CoV-2 y COVID-19 en Ecuador, desafíos, oportunidad y propuestas para fortalecer la investigación en salud en el país
Authors: Patiño Patiño Leandro
Published: May 2020

El virus del síndrome agudo respiratorio severo 2 (SARS-CoV-2) es el agente etiológico de la pandemia de COVID-19 que ha paralizado a la humanidad por su elevada tasa de transmisibilidad y de mortalidad. En Ecuador su diagnóstico y vigilancia a nivel nacional está a cargo principalmente del Instituto Nacional de Investigación en Salud Pública (INSPI) Dr. Leopoldo Izquieta Pérez. Una entidad gubernamental adscrita al Ministerio de Salud Pública (MSP), con autonomía financiera y recursos provenientes del Ministerio de Economía y Finanzas. De acuerdo al decreto 1290 de creación del INSPI tiene como atribuciones y responsabilidades “Ejecutar los Proyectos de Investigación, Desarrollo Tecnológico e innovación que la Autoridad Sanitaria Nacional y la Secretaría Nacional de Educación Superior, Ciencia y Tecnología hubieren aprobado; y, Proveer servicios de laboratorio especializado en salud, en función de las prioridades establecidas por la Autoridad Sanitaria Nacional”. Como en epidemias anteriores, por ej. las de Zika y Chikungunya, el INSPI cumple a cabalidad su rol de provisión de servicio especializado para el diagnóstico y vigilancia de COVID-19
Development of an ecological strategy for the control of downy mildew (Pseudoperonospora cubensis) in cucumber cultivation (Cucumis sativus L.)
Authors: Gabriel-Ortega Julio , Pereira-Murillo Edwin , Ayón-Villao Fernando , Castro-Piguave Carlos , Delvalle-García Isaías , Castillo José A.
Published: May 2020

Downy mildew is a severe disease of cucumber worldwide. The oomycete Pseudoperonospora cubensis cause it and once it is established in a region, the infection spreads rapidly, causing significant loss of yield and fruit quality. The objective of the research was to develop an ecological strategy for the control of downy mildew in cucumber. The treatments were arranged in a completely randomized experimental design with an alternation of chemical and biological fungicides. The treatments were: T1: systemic fungicide (Ridomil Gold, 2.5 g/l) alternating with a contact fungicide (Bravo 2.5 ml/l), T2: CustomBio 5 (Bacillus-based fungicide, 3ml/l), T3: control (water), T4: Trichoderma sp. (3 ml/l), T5: systemic fungicide (Ridomil Gold 2.5g/l) alternating with CustomBio 5 (3 ml/l), and T6: systemic fungicide (Ridomil Gold 2.5g/l) alternating with Trichoderma sp. (3 ml/l). The following variables were evaluated: stem thickness, plant height, number and weight of fruits, yield, the area under the relative progress curve (AUDPCr), and economic analysis of each treatment. The results showed that the best treatments were T1 and T6, with an AUDPCr of 11.89% and 12.10%, respectively. Treatments T6 and T1 showed the best yield, as well. The profitability analysis showed that all the alternatives were profitable with a Benefit/Cost>1 ratio. However, the treatments T6 and T1 were the most useful. We recommend this control strategy to reduce the use of chemical fungicides and, at the same time, obtain an efficient control of the disease, which guarantees a significant yield of high-quality fruit.
Factores que predisponen a la elevación de la tensión arterial en pacientes normotensos operados en cirugía electiva
Authors: Pompa Rodríguez Dania Yusimí , Vasallo Comendeiro Víctor José , Pompa Núñez C Alberto
Published: May 2020

La estabilidad circulatoria es uno de los propósitos principales durante el acto anestésico-quirúrgico. Por eso, el objetivo propuesto fue determinar la relación de los factores de riesgo identificados, con la elevación de la tensión arterial en pacientes normotensos operados en cirugía electiva, bajo anestesia general orotraqueal. Se realizó un estudio de caso-control con n=88 normotensos que fueron operados en el transcurso del año 2018, distribuidos normalmente (p=0,000) en compensados (n=44) y descompensados (n=44). Se analizaron variables: anestésico-quirúrgicas, factores de riesgo (independientes) y variable dependiente: descompensación hemodinámica (dicotómica). Se realizaron pruebas de hipótesis: Kolmogorov–Smirnov (normalidad), ONEWAY (diferencias tensionales entre grupos) y de asociación: Ji-cuadrado, Fisher y Regresión logística (p<0,05) y Odds Ratio (OR>1). Los resultados fueron representados en tablas y gráficos estadísticos y a través del método de análisis y síntesis fueron expresados textualmente. Se concluye que los antecedentes patológicos personales y familiares, el tabaquismo, cafeísmo, sedentarismo y el hipercolesterolemia constituyen factores de riesgo de hipertensión arterial, que en la medida que se conjugan se produce una potenciación de sus efectos y se elevan considerablemente los riesgos de los pacientes operados en cirugía electiva, aun cuando estos sean considerados como normotensos en la evaluación preoperatoria y al entrar al salón
Bloqueo auriculo-ventricular avanzado y bradicardia extrema como síntomas iniciales de Covid-19: Reporte de un caso
Authors: Vélez Páez Jorge Luis , Montalvo Villagomez Mario Patricio , Irigoyen Mogro Estefanía Belén , Molina Vasquez Pedro Augusto
Published: May 2020

Estamos viviendo la pandemia generada por el beta coronavirus SARS-CoV-2, sus manifestaciones clínicas son fundamentalmente respiratorias. Sin embargo, existen pacientes que podrían debutar con clínica distinta a la respiratoria, por ejemplo, gastrointestinal (diarrea); alteraciones sensitivas en el gusto y el olfato (anosmia, disgeusia) y cardiovasculares (arritmias, muerte súbita cardíaca, trastornos de la conducción), saliendo de esta manera de la presentación típica.
Los síntomas cardiovasculares y específicamente las alteraciones cardíacas, podrían ser causados por una mayor cantidad de receptores para la enzima convertidora de angiotensina 2 (ACE2), que es el sitio de unión del virus a las células humanas.
Se presenta un caso con diagnóstico confirmado de COVID -19, de una paciente adulta mayor, con comorbilidad cardiovascular, que debuta con arritmias y bloqueo cardíaco.
A Snapshot of SARS-CoV-2 Genome Availability up to April 2020 and its Implications: Data Analysis
Authors: Mavian Carla , Marini Simone , Prosperi Mattia , Salemi Marco
Published: May 2020

Background

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has been growing exponentially, affecting over 4 million people and causing enormous distress to economies and societies worldwide. A plethora of analyses based on viral sequences has already been published both in scientific journals and through non–peer-reviewed channels to investigate the genetic heterogeneity and spatiotemporal dissemination of SARS-CoV-2. However, a systematic investigation of phylogenetic information and sampling bias in the available data is lacking. Although the number of available genome sequences of SARS-CoV-2 is growing daily and the sequences show increasing phylogenetic information, country-specific data still present severe limitations and should be interpreted with caution.

Objective

The objective of this study was to determine the quality of the currently available SARS-CoV-2 full genome data in terms of sampling bias as well as phylogenetic and temporal signals to inform and guide the scientific community.

Methods

We used maximum likelihood–based methods to assess the presence of sufficient information for robust phylogenetic and phylogeographic studies in several SARS-CoV-2 sequence alignments assembled from GISAID (Global Initiative on Sharing All Influenza Data) data released between March and April 2020.

Results

Although the number of high-quality full genomes is growing daily, and sequence data released in April 2020 contain sufficient phylogenetic information to allow reliable inference of phylogenetic relationships, country-specific SARS-CoV-2 data sets still present severe limitations.

Conclusions

At the present time, studies assessing within-country spread or transmission clusters should be considered preliminary or hypothesis-generating at best. Hence, current reports should be interpreted with caution, and concerted efforts should continue to increase the number and quality of sequences required for robust tracing of the epidemic.
Hemodialysis nurse burnout from 31 provinces in mainland China: a cross-sectional survey (Preprint)
Authors: Zhou Lifang , Guo Weiai , Song Li , Zhang Guanrong , Zhong Mi , Sun Chunyan , Mo Yawen , Zheng Shuqian , Chen Yinggui , Liang Xinling , Shi Wei , Fu Xia
Published: May 2020

BACKGROUND

Job burnout is an occupational illness with high prevalence among nurses in China. The job burnout status among hemodialysis nurses should be given more attention because of they handle sophisticated machinery, and there is a high risk of infection in hemodialysis nursing.

OBJECTIVE

The level and influencing factors of job burnout among hemodialysis nurses in mainland China were investigated.

METHODS

This was a cross-sectional study conducted in all 31 provinces of mainland China in 2019. Data from nurses responsible for direct care in 2738 hemodialysis units were analyzed. An effective response rate of 99.00% (10570/10677) was achieved. Hemodialysis nurse burnout was measured by the Maslach Burnout Inventory. Working atmosphere and interpersonal relationships with colleagues were each measured by a single question. Multiple linear regression analysis was used to explore the factors related to nurse burnout. Structural equation modeling was used to explore the effect of the working environment, individual factors, and specialist nurse training on the HD nurse burnout and the intention to leave.

RESULTS

The total burnout score was 38.69 (SD17.47), indicating that the level of job burnout among hemodialysis nurses in mainland China was relatively low. Hemodialysis nurses experienced low-level burnout on the emotional exhaustion and depersonalization subscale and high-level burnout on the personal accomplishment subscale. Statistically significant differences in burnout levels were associated with working atmosphere, interpersonal relationships with colleagues, specialist nurse training, number of children, night shift, and marital status.

CONCLUSIONS

The burnout level of HD nurses in mainland China was relatively low. Working atmosphere, interpersonal relationships with colleagues, and training of specialist nurses are the most important influencing factors regarding job burnout in hemodialysis nurses. Therefore, it is suggested that improving the working atmosphere and interpersonal relationship processing ability and providing more training opportunities for nurses can alleviate job burnout in nurses.
CoViD 19: Knowledge, attitude and practices of a cohort of a South Indian State population. (Preprint)
Authors: Amalakanti Sridhar , Arepalli Kesava Venkata Raman , Koppolu Ravi Kiran
Published: May 2020

UNSTRUCTURED

CoViD 19 pandemic has induced the government to initiate strict control measures. Improvements to these measures and shortcomings could be gleaned with the understanding of the knowledge, attitude, and practices of the public. We conducted an online survey to elicit this information from a south indian population. Of the 1837 subjects who answered the survey, 70% were youth(16-29years) 54% were post graduation and 47.8% were desk job holders. The mean knowledge score was 9.92 士2.37/14 and 94.44% secured atleast above average score. The subjects had a positive (70%) attitude towards the CoViD 19 situation and 77% subjects followed good preventive practices. However, we found that women, people with low education and non medical background were associated with poor knowledge and practices. Attitude was poor in subjects occupant in physical works. The health policy would better serve the purpose if the groups with poor scores are targeted.
Semestre Base: estrategia flexible de nivelación escolar
Authors: Rivera Lucila , Hernández Rommy , Salcedo Margarita , Briones Melisa , Lucas Benjamín
Published: May 2020

Es común que los sistemas de educación formal carezcan de la capacidad para satisfacer las demandas de educación media superior en los estados; sin embargo, la tecnología ofrece muchas opciones para que los estudiantes validen sus competencias de manera flexible. La Universidad de Guadalajara implementó, a través de un campus virtual, un curso de nivelación utilizando la modalidad de b-learning, y durante un periodo de seis meses y de forma voluntaria, un total de 2,070 maestros y 16,855 estudiantes de 72 escuelas participaron en este curso. El programa generó un sentido de vínculo e identidad, además de fortalecer el conocimiento del estudiante en las áreas básicas antes de su admisión al nivel superior.
Implicações da e-participação para a democracia na América Latina e Caribe
Authors: Freitas Christiana Soares de
Published: May 2020

O artigo visa analisar as repercussões políticas das inovações democráticas digitais em países da América Latina e Caribe. A questão central indaga em que medida as redes constituídas para o ativismo político na internet de fato contribuem para o desenvolvimento e a legitimidade de práticas democráticas. Para responder a essa inquietação foi realizada pesquisa para mapear e analisar quinhentas e vinte e seis (526) iniciativas de e-participação na região. Tais inovações tendem a consolidar e a reforçar práticas democráticas participativas; ampliar canais de comunicação entre cidadãos e governos; aprimorar as possibilidades de representação cidadã e fortalecer os mecanismos políticos e legais para controle social. Ainda assim, observa-se número reduzido de iniciativas com resultados efetivos. Quanto maior a penetrabilidade das demandas cidadãs em processos políticos formais, maiores as chances de as iniciativas transformarem-se, de fato, em instrumentos de consolidação e legitimação de práticas e processos democráticos participativos.
Effects of molar ratio on dielectric, ferroelectric and magnetic properties of Ni0.5Zn0.5Fe2O4-BaTiO3 composite ceramics
Authors: Luo Xiaodong , Wang Hong , Gao Rongli , Li Xinliang , Zhang Jing , Ban Heng
Published: May 2020

Ni0.5Zn0.5Fe2O4-BaTiO3 (NZFO-BTO) magnetoelectric composite ceramics with
different molar ratios (mNZFO:mBTO = 1:1.5, 1.5:1 and 2:1, defined as
N1B1.5, N1.5B1 and N2B1, respectively) were prepared successfully by using a
joint hydrothermal method and sol-gel technique and sintering at 1000 ?C.
Meanwhile, the dielectric, ferroelectric and magnetic properties of the
composites were investigated. The presence of bi-phase structure in the
composites was verified with X-ray diffraction analyses. The scanning
electron microscopy images and energy dispersion spectrum results confirmed
that the bulk-like grains (2 to 5 ?m) and spherelike grains (_0.5 ?m) could
be attributed to NZFO and BTO, respectively. The dielectric constant and
loss increased with increasing NZFO/BTO molar ratio because the carrier
concentration of NZFO is higher than that of BTO. Thus, the dielectric
constant of the N2B1 ceramics is more than 7800 at low frequency of 100Hz
and room temperature, while only less than 2000 for the N1B1.5 composite.
Two peaks can be observed in the temperature dependence of the dielectric
constant curves. One is near 120 ?C, which corresponds to the Curie
temperature of BTO, while the other peak occurs at about 320 ?C,
corresponding to the relaxation polarization. The remanent polarization
increases with increasing the content of ferroelectric BTO. The maximum
value at 1 kHz was observed for the N1B1.5 sample and it is larger than 4.5
?C/cm2, while the minimal value was obtained for the N2B1 composite and is
only 1.2 ?C/cm2. Magnetic properties were also measured and it was observed
that magnetization increases with increasing the molar ratio. The largest
saturation magnetization has the N2B1 composite (_51.74 emu/g) due to the
larger concentration of NZFO phase. However, the sample N1B1.5 shows the
largest coercive field due to the highest interface interaction. This study
provides guidelines for the fabrication of NZFO-BTO magnetoelectric
composite ceramics.
Structural and optical properties of Al-doped ZnO thin films produced by magnetron sputtering
Authors: de Queiroz , de Azevedo , de Medeiros , Nascimento Igor , de Souza , de Oliveira , de Melo , Melo José , de Carvalho
Published: May 2020

Experimental and theoretical investigations of the structure and optical
properties of Al-doped ZnO (AZO) thin films produced by magnetron sputtering
under different values of electric current were conducted. The XRD results
confirm the formation of the AZO thin films with hexagonal wurtzite
structure, with preferential orientation along the crystallographic plane
(002), direction c. The increment of electric current allowed an increase in
average crystallite size. The FE-SEM and AFM images analyses of the AZO
films revealed the occurrence of nucleation on the substrate surface that
formed films with granular and rough structure. The higher substrate
temperature caused by the higher value of electric current had influence on
the grain size and thickness (ranging from 974 to 1500 nm) of the formed
thin films. Due to the high absorption of free carriers, the optical
transmittance of the AZO films was acceptable for the visible spectrum and
limited to the near infrared region. The energy band gap values for both AZO
films, measured from the optical transmission spectra, were ideal for
semiconductor applications. The ab initio calculations using DFT and the
method LSDA + U along with the correction of Hubbard were successfully
applied to investigate the structural and optical effects. The band
structures of the pure ZnO and ZnO:Al, calculated in this work, presented Eg
values close to the experimental results. Therefore, these results imply
that our methods are reliable and that the calculations are in accordance
with the experimental results.
Enhanced growth of Y3al5O12:Ce3+ nanocrystals in mesoporous SiO2 utilizing vacuum-assisted impregnation
Authors: Ranjan Bikas , Shinozaki Kenji , Yamashita Masaru , Akai Tomoko
Published: May 2020

YAG:Ce nanocrystals were successfully formed within silica matrix via
impregnation of a YAG:Ce precursor solution in mesoporous silica, followed
by sintering. In this study, vacuum-assisted impregnation was applied to
increase the size of YAG:Ce nanocrystals in a silica matrix. The size of the
YAG:Ce nanocrystals stabilized in the silica matrix via impregnation under
atmospheric pressure was 18 nm. By applying vacuum-assisted impregnation,
the size of the nanocrystals increased to 31 nm. The photoluminescence
spectra of the obtained silica-YAG:Ce composites revealed that there was an
approximate three-fold increase in the intensity of emission when
vacuum-assisted impregnation was applied. The internal quantum efficiency
also increased from 13.6% to 32.2%.
Synthesis and application of pigments based on lanthanide orthoferrites
Authors: Pimentel Patrícia , Dutra Jairo , Câmara Maria , Dantas Gerbeson , Bagnato Osmar , Godoi Glauber , Oliveira Rosane
Published: May 2020

In this work, we synthesized oxides with perovskite LnFeO3 type structure
(where Ln = La, Pr and Nd), aiming their use as ceramic pigments. The
as-synthesized powders, prepared by gelatin method, were thermally treated
at 600 and 800 ?C to obtain the perovskite phase. The characterization was
performed using X-ray diffraction technique, followed by Rietveld
refinement, scanning and transmission electron microscopy, spectroscopy in
the UV-Visible region and CIE Lab colorimetry. The calcined powders were
also used for fabrication of ceramic pieces to evaluate the colour when 2
wt.% of the powders was added into a transparent glaze. The pigments
presented shades ranging from pale brown for the powdered samples to
yellowish when applied in the glazes.
Flower-like boehmite nanopowders obtained at low temperature from Bayer liquor
Authors: Milanovic Marija , Obrenovic Zoran , Stijepovic Ivan , Nikolic Ljubica
Published: May 2020

Boehmite nanocrystalline powders were obtained by neutralization of Bayer
liquor at 70?C with addition of glucose. Temperature of the neutralization
induced formation of the flower-like morphology of the nanopowders. XRD and
FTIR results confirmed that the single phase boehmite is formed without any
other impurities. Calcination at 500?C led to the formation of transition
-alumina with the retention of the flower-like morphology. Both
as-synthesised and calcined powders possessed high specific surface area with
mesopores between 3-6 nm in diameter. Relatively low temperature of
neutralization as well as the use of low cost and ecologically friendly
glucose as a surfactant are very promising for the possible application in
the industrial production of alumina nanopowders.
Ticari Gemiler İçin Seyir Süresi ve Yakıt Tüketiminin Azaltılması Amaçlı, Hava ve Deniz Şartlarına Göre Rota Optimizasyonu Sistemi (Ege Denizi Örneği)
Authors: İNAN Timur , BABA Ahmet Fevzi
Published: May 2020

Ticari gemilerin, seyirlerini en kısa zamanda gerçekleştirmesi hem yakıt tasarrufu hem de zaman tasarrufu açısından önem taşımaktadır. Gemilerin hızını etkileyen faktörler rüzgâr, dalga ve akıntı yön ve büyüklükleridir. Bu çalışmada, hava ve deniz şartlarına ait tahmin bilgilerini Inmarsat ve Copernicus servislerinden elde ederek, Ege Denizi üzerinde bulunan limanlar arasında yapılabilecek olası seyirler için rota optimizasyonu sağlayabilen bir karar destek sistemi ortaya koyulmuştur. Ortaya konulan sistem, belirlenen başlangıç ve bitiş limanları arasında kullanılması gereken rotayı, deniz ve hava şartlarına göre en uygun şekilde seçebilmektedir. Uygunluk kriteri, seyir süresinin ve yakıt tüketiminin mümkün olan en az değerde olmasıdır. Hesaplamada yöntem olarak CSGA (Cuckoo Search Genetic Algorithm) algoritması kullanılmıştır. Limanlar arasında seyir yapılabilmesi amacıyla kullanılabilecek en kısa yollar hava ve deniz şartları göz ardı edilerek Djikstra algoritması ile hesaplatılmış ve kayıt altına alınmıştır. Hava ve deniz şartları Inmarsat ve Copernicus servislerinden elde edilerek en kısa yol için maliyet hesaplanmış, ardından da CSGA algoritması ile daha optimal bir rotanın bulunup bulunmadığı hesaplatılmıştır. Ege Denizi limanları arasındaki mesafeler uzun olmadığı için sakin hava şartlarında en kısa yol rotasından daha uygun rota veya rotalar bulunamamıştır. Ancak, hava ve deniz şartlarının sert olduğu kış aylarında, sistemin daha uygun alternatif rotalar bulabildiği gözlemlenmiştir.
Identidade e Sabedoria: a Reflexão Teológica como Veritatis Gaudium
Authors: Gonçalves Paulo Sérgio Lopes
Published: May 2020

Objetiva-se, neste artigo, apresentar epistemologicamente a teologia como sabedoria que produz a alegria da verdade. Justifica-se este objetivo a necessidade de afirmar a identidade da teologia em meio ao contexto de pós-modernidade e de pluralismo teológico, para que não se torne uma ciência que utilize a identidade de outras ciências. Ao identificar a teologia como sabedoria, realça-se o seu vínculo com a revelação divina, que tem na sabedoria pré-existente o sujeito que realiza a criação, encarna-se na história humana e é o ápice de todo movimento revelador de Deus. Essa sabedoria é teorizada na teologia em sua relação com o mundo e com o ser humano, em toda a sua historicidade, dramas, tensões e perspectivas. Essa teologia sapiencial se torna, então, uma theologia mundi¸ que, concebida como scientia fidei, cujo assunto é Deus em sua relação com o mundo habitado pela humanidade, torna-se uma scientia Dei mundi. Para atingir o objetivo proposto, será decifrada teologicamente a revelação como fundamento da teologia, apresentada a configuração da teologia na relação entre Escritura e Tradição e mostrada a teologia como sabedoria ou, propriamente, como ciência sapiencial da fé revelada, que incide na história do mundo e do homem, para tornar-se contemporânea de cada época histórica.
KARAKTERISTIK DIELEKTRIK ISOLATOR POLIMER RESIN EPOKSI BERBAHAN PENGISI ABU TONGKOL JAGUNG
Authors: Indah Amelya
Published: May 2020

Pengembangan isolator polimer semakin meningkat dikarenakan sifat dielektrik isolator polimer lebih baik dibanding kaca dan keramik, konstruksi relatif lebih ringan, ketahanan kimia yang baik, ketahanan yang tinggi terhadap asam, memiliki sifat kedap air (hidrophobik) dan proses pembuatannya yang relatif lebih cepat dibandingkan isolator keramik dan kaca. Adapun kekurangannya yakni bahannya kurang tahan  terhadap  perubahan  cuaca  yang  menyebabkan  kekuatan  mekanis  menurun  dan  kerusakan  fisik  isolator. Kekurangan tersebut dapat diperbaiki dengan menambahkan bahan pengisi (filler) pada bahan isolator, seperti pasir silika, ataupun abu arang yang banyak mengandung silika. Penelitian ini mengkaji karakteristik dielektrik isolator polimer berbahan pengisi abu arang tongkol jagung. Bahan resin epoksi yang di gunakan adalah Dyglicidyl Ether Of Bisphenol-A (DGEBA) sebagai bahan dasar dan Metaphenylene Diamine (MPDA) sebagai bahan pengeras dengan perbandingan campuran 2:1 dan dicampurkan bahan pengisi (filler) dengan komposisi 0 gr, 15gr, 30gr. Pengujian dilakukan pada kondisi kering dan basah. Hasilnya Korona yang terjadi pada sampel dengan filler 30gr lebih lama dibandingkan dengan sampel dengan filler 15gr, dan nilai tegangan tembus yang terjadi pada sampel dengan filler 30gr lebih tinggi dibandingkan dengan sampel dengan filler 15gr.  Dengan demikian peningkatan filler  secara  bertahap  dapat  memperbaiki nilai tegangan tembus pada sampel isolator
Studi Awal Karakteristik Tegangan Ouput Generator Magnet Permanen dan Generator DC pada Turbin Kubah Masjid Putar
Authors: Oktaviani Wiwin A. , Barlian Taufik , Apriani Yosi
Published: May 2020

Intisari  — Setiap yang berputar memiliki potensi energi kinetik, tidak terkecuali putaran kubah masjid. Penelitian ini bertujuan untuk mengetahui potensi pemanfaatan kubah putar masjid sebagai penghasil energi listrik skala kecil. Generator yang diuji cobakan adalah generator magnet permanen dan generator DC yang dirangkaikan dengan turbin kubah putar. Pengujian dilakukan di dua lokasi, di Jembatan Musi 2 Palembang dan di perairan Sungsang Kabupaten Banyuasin untuk mengukur besaran tegangan dan arus output yang dihasilkan pada berbagai kecepatan angin menggunakan multimeter dan anemometer. Hasil penelitian menunjukkan bahwa tegangan yang dihasilkan oleh putaran  kubah masjid menggunakan generator magnet permanen mampu mencapai 14,21 V pada kecepatan angin 3,8 m/det dibandingkan dengan generator DC yang hanya mencapai 3 V pada kecepatan angin 8 m/det. Jika ditinjau dari besaran arus, generator magnet permanen menghasilkan arus konstan sebesar 0,3 A sedangkan pada generator DC arus yang dihasilkan tidak terukur karena nilainya yang amat kecil. Penelitian ini menunjukkan bahwa kubah putar masjid dapat dijadikan sebagai turbin angin pada daerah yang memiliki kecepatan angin rendah.

Kata kunci  — kubah masjid putar,generator magnet permanen,generatorDC, turbin angin kecepatan rendah

 

 

 

Abstract - Every spinning has kinetic energy potential; the mosque dome is no exception. This study aims to determine the potential use of the mosque's turning dome as a producer of small-scale electrical energy.  Two types of the generator were tested, which were permanent magnet generator and DC generator, which were coupled with a rotary dome turbine. The test was carried out at two locations, at Palembang Musi 2 Bridge and in the waters of Sungsang, Banyuasin Regency, to measure the amount of voltage and output current generated at various wind speeds using a multimeter and anemometer. The results showed that the voltage generated by the mosque's dome rotation using a permanent magnet generator was able to reach 14.21 V at wind speeds of 3.8 m / sec compared to DC generators, which only reached 3 V at 8 m / s wind speed. When viewed from the amount of current, permanent magnet generators produce a constant current of 0.3 A while in DC generators, the current generated is not measurable because the value is minimal. This research shows that the mosque's rotary dome can be used as a wind turbine in areas that have low wind speeds.

Keywords - rotary mosque domes, permanent magnet generators, generator DC, low speed wind turbines
Realizing the Basic Income
Authors: Pel Bonno , Backhaus Julia
Published: May 2020

Current social innovation initiatives towards societal transformations bring forward new ways of doing and organizing, but new ways of knowing as well. Their efforts towards realizing those are important sites for the investigation of contemporary tensions of expertise. The promotion of new, transformative ways of knowing typically involves a large bandwidth of claims to expertise. The attendant contestation is unfolded through the exemplar case of the Basic Income, in which the historically evolved forms of academic political advocacy are increasingly accompanied by a new wave of activism. Crowd-funding initiatives, internet activists, citizen labs, petitions and referenda seek to realize the BI through different claims to expertise than previous attempts. Observing both the tensions between diverse claims to expertise and the overall co-production process through which the Basic Income is realized, this contribution concludes with reflections on the politics of expertise involved in transformative social innovation.
Visual Stereotypes of Tatars in the Finnish Press from the 1880s to the 1910s
Authors: Elmgren Ainur
Published: May 2020

Visual stereotypes constitute a set of tropes through which the Other is described and depicted to anaudience, who perhaps never will encounter the individuals that those tropes purport to represent.Upon the arrival of Muslim Tatar traders in Finland in the late nineteenth century, newspapers andsatirical journals utilized visual stereotypes to identify the new arrivals and draw demarcation linesbetween them and what was considered “Finnish”. The Tatars arrived during a time of tension inthe relationship between the autonomous Grand Duchy of Finland and the Russian Empire, withthe Finnish intelligentsia divided along political and language lines. Stereotypical images of Tatarpedlars were used as insults against political opponents within Finland and as covert criticism ofthe policies of the Russian Empire. Stereotypes about ethnic and religious minorities like the Tatarsfulfilled a political need for substitute enemy images; after Finland became independent in 1917,these visual stereotypes almost disappeared.
Establishing Islam in Sweden: The First Tatar Community and Muslim Congregation and Their Sources
Authors: Sorgenfrei Simon
Published: May 2020

This article focuses on the history and establishment of the first Muslim congregation and organisationin Sweden, Turk-Islam Föreningen i Sverige för Religion och Kultur (Turk-Islamic Associationfor Religion and Culture), which was founded in the late 1940s by a small group of immigrants andrefugees of Tatar and Turkish origin. The community has been the object of earlier research (seeSvanberg & Westerlund 1999; Ståhlberg & Svanberg 2016; Sorgenfrei 2018) but the following isa first attempt to describe the historical background of the Tatars in Sweden through systematicarchival work. The article thus aims at being also an orientation to the archival and private sourcesof the group and their organization and to point out some topics of interest for further research.
The Effect of Fidgeting On Student Concentration Levels
Authors: Nugroho K.A. , Kurnianingtyas M.C.D.
Published: May 2020

Concentration is the ability needed to solve a problem.  Students in learning also need concentration (DePorter et al., 2010). Unfortunately students have difficulty concentrating on doing a job. To help concentrate, students play pen, spin coins, play cellphones and other fun activities. To meet this goal, an agitated repellent device such as fidget spinner and fidget cube was made (Plafke, 2016). The benefits of spinner fidget for increasing concentration are still questionable (Schecter et al., 2017). Therefore, quantitative research is needed to prove the claim that fidget spinner can increase concentration. Unfortunately, there is currently no quantitative research that tests the effectiveness of these tools to increase short-term memory. The concentration level of a person can be measured using the Stroop test. Stroop tests utilize primitive cognitive operations, offering clues to the basic process of attention. The variable studied is Reaction Time for Correct Answer (RTCA), which is the amount of reaction time in answering correctly divided by the number of correct answers. The results of this study are the use of fidget spinner not having a significant effect on differences in the results of measurement of RTCA. The use of fidget spinner does not provide a significant difference in average error between not using fidget spinner and using fidget spinner.
Сравнение стратегий выполнения аортокоронарного шунтирования у больных ишемической болезнью сердца с многососудистым поражением, которым выполнялось стентирование инфаркт-зависимой артерии голометаллическими стентами
Authors: Bocharov A.V. , Popov L.V.
Published: May 2020

Цель исследования: сравнить отдаленные результаты двух стратегий проведения аортокоронарного шунтирования (АКШ) у больных ишемической болезнью сердца с многососудистым поражением, которым выполнено стентирование клинико-зависимой артерии голометаллическими стентами по поводу острого коронарного синдрома. Материал и методы. Проанализированы итоги двухлетнего наблюдения за больными, которым на первом этапе было выполнено стентирование клинико-зависимой артерии с использованием голометаллических стентов трансрадиальным доступом по поводу острого коронарного синдрома и вторым этапом аортокоронарное шунтирование. Основную группу составил 51 пациент, которым при выполнении аортокоронарного шунтирования маммарокоронарный шунт накладывали проксимальнее имплантированного стента. В контрольную группу вошли 46 пациентов, которым маммарокоронарный шунт накладывали дистальнее имплантированного стента. На момент выполнения аортокоронарного шунтирования стенты в обеих группах были проходимы. В обеих группах анализировали конечные точки (смерть от сердечно-сосудистых причин, инфаркт миокарда, острое нарушение мозгового кровообращения, повторная реваскуляризация) и комбинированную конечную точку MACCE (смерть от сердечно-сосудистых причин, инфаркт миокарда, острое нарушение мозгового кровообращения, повторная реваскуляризация). Результаты. Анализ результатов позволил выявить статистически значимые различия между основной и контрольной группами по частоте повторной реваскуляризации (25,5 и 2,2 соответственно), возврата клиники стенокардии (27,5 и 8,7 соответственно) и комбинированной точке MACCE (31,4 и 6,5 соответственно). Заключение. При выполнении аортокоронарного шунтирования наложение анастомоза дистальнее стентированного участка является более предпочтительной стратегией реваскуляризации. Тип коронарных стентов, имплантированных по поводу острого коронарного синдрома, служит дополнительным самостоятельным фактором, который определяет отдаленные результаты АКШ.
Комплексное лечение при хронической тромбоэмболической легочной гипертензии
Authors: Gorbachevskii S.V. , Rahmonov K.H.
Published: May 2020

Хроническая тромбоэмболическая легочная гипертензия редко встречаемое, но опасное жизнеугрожающее легочное сосудистое заболевание, вызванное хронической обструкцией ветвей легочной артерии вследствие диффузного формирования организованных тромбов и сопровождающееся васкулопатией мелких легочных сосудов, аналогичной при развитии идиопатической легочной гипертензии. В данном обзоре представлены общие сведения об актуальных аспектах лечения больных с хронической тромбоэмболической легочной гипертензией. Освещен мировой опыт применения хирургических, эндоваскулярных иконсервативных методов лечения при хронических обструктивных поражениях легочных артерий тромбогенной этиологии. Отмечены перспективы развития каждого из методов, и приведены сводные терапевтические прогнозы использования каждой из методик у пациентов с хронической тромбоэмболической легочной гипертензией.
Случай успешного хирургического лечения фистулы между легочной артерией и левым предсердием (клинический случай и обзор литературы)
Authors: Gorbachevskii S.V. , Aibazov R.A. , Grenaderov M.A. , Belkina M.V. , Sobolev A.V. , IUrpol`skaia L.A.
Published: May 2020

Связь между правой легочной артерией и левым предсердием редкая врожденная или приобретенная сердечно-легочная сосудистая аномалия, которая приводит к центральному цианозу, одышке и компенсаторной полицитемии. Степень выраженности симптоматики зависит от величины веноартериального шунта. Поскольку легочная артерия напрямую связывается с левым предсердием, легкое теряет свою фильтрующую функцию, что может приводить кинсульту или абсцессу головного мозга и системных органов по причине парадоксальной эмболии. Определен мульти инструментальный диагностический подход: эхокардиография, катетеризация сердца и компьютерная томография для верификации этого необычного диагноза с целью определения точной анатомии порока, что позволит разработать оптимальный план операции с определением хирургического доступа. Более раннее вмешательство должно привести к снижению хирургических рисков.
Pengaruh Pola Asuh Otoriter Orang Tua terhadap Interaksi Anak Usia Dini
Authors: Mardiana Nur Shela
Published: May 2020

This problem is motivated by children who are always forbidden to play with their peers outside the home on the grounds that parents are afraid of children addicted to play and become lazy to learn, this is very contrary to early childhood education, because the child's world should be a world of play. Parents will definitely provide the best parenting for their children, and parents have their own parenting, including authoritarian parenting. This authoritarian parenting style of parents will usually rule with all the lives of children and do not give children to choose what they want to do, including in children's social interactions, parents will forbid children to play for all reasons. That way the child will have a personality that can the child unable to interact with the surrounding environment.
ДИФФЕРЕНЦИАЛЬНЫЙ СПОСОБ ОБНАРУЖЕНИЯ ВИТКОВЫХ ЗАМЫКАНИЙ В ТРЕХФАЗНОМ ТРАНСФОРМАТОРЕ
Authors: Мустафин Рамиль
Published: May 2020

Измерены напряжения холостого хода, пропорциональные соответствующим магнитным потокам трехфазного трансформатора общего назначения с использованием дифференциальных методов, направленных на обнаружение витковых замыканий в обмотках трехстержневых трансформаторов.

Стандартный метод определения витковых замыканий основан на измерении тока холостого хода и измерении мощности потерь. В дополнение к ним для определения наличия витковых замыканий в трехфазных линейных трансформаторах предлагается применять дифференциальные методы, хорошо известные в релейной защите. Методы основаны на том, что витковое замыкание увеличивает магнитное сопротивление фазного стержня сердечника трансформатора, в фазной обмотке которого присутствует витковое замыкание. При подаче однофазного напряжения на обмотку фазы В в обмотках боковых фаз А и С линейного трехфазного трансформатора должны индуцироваться одинаковые по фазе и амплитуде напряжения. При соединении обмоток фазы А и С встречно, и измерении дифференциального сигнала разности напряжений фаз А и С происходит следующее. Если в исходном, неповрежденном состоянии, дифференциальный сигнал был близок к нулю, то витковое замыкание в одной из боковых фаз А или С вносит дисбаланс, и дифференциальный сигнал возрастает. Дифференциальный сигнал легко измерим на фоне близкого к нулю дифференциального сигнала в неповрежденном состоянии трансформатора, что обусловливает высокую чувствительность дифференциального метода к наличию витковых замыканий. При возникновении виткового замыкания на обмотке центральной фазы В необходимо учитывать дифференциальный сигнал в неповрежденном состоянии трансформатора.