bluuebunny/crossref_metadata_2025 huggingface dataset:
Recyclable Functionalized Polymer for Cu(II) Decontamination from Aqueous Media
Authors: Tofan Lavinia , Wenkert Rodica , Bunia Ion , Paduraru Carmen
Published: January 2021

In the endeavor to explore more and more materials, this work is focused on the study of the potential applicability of a chelating sorbent based on an acrylic copolymer functionalized with amidoethylenamine groups in Cu(II) removal from wastewaters in batch and dynamic conditions. The proposed sorbent was synthesized by the chemical transformation reaction of ethylacrylate (EA): acrylonitrile (AN):2% divinylbenzene (DVB) copolymer with ethylenediamine (EDA). Batch sorption results pointed out that the Cu(II) retention by the acrylic copolymer functionalized with amidoethylen-amine groups was dependent on the initial solution pH, initial metal concentration and contact time. The sorption of Cu (II) on the tested chelating copolymer obeyed both Langmuir and Freundlich isotherms. The Langmuir maximum sorption capacity was 65.21mg Cu (II)/g of polymer. The kinetic experimental data fitted well with the pseudo - second order model. The dynamic behavior of a fixed bed column filled with the acrylic copolymer functionalized with amidoethylenamine groups has been studied in terms of breakthrough curve. The experimental breakthrough data have been well described by Thomas model. The tested chelating copolymer is suitable for multiple processes of Cu(II) sorption-desorption. The column studies with real wastewater sample presented a removal efficiency of 100% for Cu (II) and a significant improvement of the wastewater quality. The acrylic copolymer functionalized with amidoethyleneamine groups can be successfuly applied for the Cu (II) removal - recovery - recycling.
Finite Element Analysis of Miniplate for Post-Fracture Finger Rehabilitation Device
Authors: Qosim Nanang , Monasari Ratna , Emzain Zakki F. , Hakim Lutfi , Sai’in Ali
Published: January 2021

Miniplate plays an important role as one of the implant components used as a rehabilitation device for a post-fracture finger. In this study, an analysis was carried out to determine the strength of the miniplate design made from Ti-6Al-4V titanium alloy material. Simulation and analysis were carried out using the finite element method. The given input for modeling tensile and bending loads determined von Mises stress, kinetic energy, strain energy, and internal energy. The analysis showed that uneven von Mises stress and strain distribution have occurred. The critical concentration of stresses was located at the center of the miniplate and these values were a lot lower than the yield stress of Ti-6Al-4V.
Características de la formación inicial de la Licenciatura en Biología y la práctica docente de la UPN
Authors: Peralta Rodríguez Mónica Liliana
Published: January 2021

Este artículo expone algunos resultados sobre una investigación que caracteriza la formación inicial de la Licenciatura en Biología de la Universidad Pedagógica Nacional, el desarrollo de la práctica docente y su percepción, en un grupo de estudiantes. Se diseñó una metodología mixta teniendo presente la Resolución 185835 de 2017 que orienta el funcionamiento de las Licenciaturas en Colombia. La investigación concluye que existe articulación de los componentes disciplinar, pedagógico y didáctico, que la práctica docente inicia en el ciclo de fundamentación y finaliza con un proyecto pedagógico y menciona los retos que enfrentó este grupo en su práctica docente.
As alterações políticas da Igreja Católica entre 1967 e 1971
Authors: De Souza Pinto Paulo Vitor
Published: January 2021

O presente artigo é resultado da pesquisa de mestrado desenvolvida no Programa de Pós-Graduação em Educação, da Universidade de São Paulo. Temos como objetivo disertar sobre as alterações políticas da Igreja Católica entre 1967-1971. Utilizamos como fonte documental os Campanhas da Fraternidade. Em um primeiro momento identificamos a Igreja como uma instituição social, em seguida desenvolvemos a divisão da Igreja em alas conservadora, progressista e libertadora. Por fim, foi possível identificar que a Igreja Católica apresentou-se em 1967 uma instituição com aspectos da ala conservadora. Entretanto com o passar dos anos, Igreja adotou uma postura mais progressista.
Describe The Inconsistency Of Observational Results With Theoretical Models In Explaining The Evolution Of Planetary Disks
Authors:   Jizzakh State Pedagogical Institute, Jizakh, Uzbekistan, Khotamov Jaxongir A , Ulasheva Mashxura A ,   Jizzakh State Pedagogical Institute, Jizakh, Uzbekistan, Jumanazarova Nozima X ,   Jizzakh State Pedagogical Institute, Jizakh, Uzbekistan, Juraboyev Jasur A ,   Jizzakh State Pedagogical Institute, Jizakh, Uzbekistan
Published: January 2021

This paper discusses the incompatibility of theoretical models and observational results, which is one of the most pressing issues in astrophysics today, and points out the shortcomings of theoretical models in the formation of planets as a result.
COVID-19 PANDEMİSİNİN EĞİTİMDE YARATTIĞI BÜYÜK İKİLEM: OKULLAR TEKRAR AÇILMALI MI; KAPALI MI KALMALI?
Authors: YURTTAŞ Aslı , KESİK Fatma
Published: January 2021

Bu araştırmanın amacı öğrenci velilerinin 2020-2021 eğitim öğretim döneminde okulların kapalı ya da açık olması ile ilgili endişe düzeylerini endişe alanlarını ve bu doğrultuda sürece yönelik çözüm önerilerini ortaya koymaktır. Nitel araştırma desenlerinden betimsel fenomenolojik desenin kullanıldığı araştırmanın çalışma grubunu Türkiye’nin çeşitli illerinde yaşayan 395 veli oluşturmaktadır. Verilerin “Eğitimde Normalleşme Süreci Anketi: Veli Formu” aracılığıyla online olarak toplandığı araştırma sonucunda velilerin hem okulların açılması hem de kapalı kalması durumunda ciddi endişeler taşıdıkları, veli endişelerinin okulların açılması durumunda öğrencilerin fiziksel sağlığı alanında yoğunlaşırken; kapalı kalması durumunda öğrencilerin eğitimi alanında yoğunlaştığı ortaya çıkmıştır. Bu doğrultuda, velilerin beklentilerini karşılayabilecek bir model olarak düşünülen hibrit modelin uygulanması ve velilerin bu kapsamda ortaya koydukları görüşlerin dikkate alınması önerilmektedir.
Promoção da atividade física numa instituição de ensino superior
Authors: Quesado Ana , Santos Ana Rita , Soares Inês Cecílio , Moreira Liliana , Pereira Sandrina
Published: January 2021

Enquadramento: apesar da prática regular de atividade física influenciar positivamente a saúde emocional e física dos estudantes do ensino superior, a prevalência de inactividade física é elevada. Objetivos: realizar diagnóstico de situação relativamente à atividade física da comunidade académica; planear e implementar intervenções de promoção da atividade física mediante diagnóstico realizado; reduzir o sedentarismo na comunidade académica. Metodologia: investigação-ação desenvolvida numa Escola Superior de Saúde da região centro de Portugal. Amostragem não probabilística por conveniência. Este artigo descreve o 1º Ciclo desta investigação, no qual se realizou o diagnóstico de situação de prática de atividade física, com questionário de caraterização sociodemográfica, Questionário Global da Atividade Física e Focus Grupo. Elaborou-se um plano estratégico de promoção de atividade física e iniciou-se a implementação. Análise dos dados quantitativos através do Statistical Package for the Social Sciences, dos qualitativos seguiu-se os pressupostos de Bardin. Resultados: 53,52% dos participantes eram ativos insuficientes, 24,65% inactivos; com média de tempo sentados 6,86 horas. No Focus Grupo sugeriram implementação de atividades em grupo e do “Gymbreak”. Conclusão: a conceção do plano assentou nos eixos de intervenção integrados na estratégia nacional para actividade física, respondendo às recomendações da Direção-Geral da Saúde e envolvendo ativamente a comunidade académica.
Management of Downy Mildew of Onion Through Selective Fungicides in the Field Condition
Authors: Bhatti Tufail Ahmed , Nizamani Zubeer Ahmed , Gadhi Muswar Ali , Soomro Faheeda , Kumar Raj , Abro Saeed Ahmed , Soomro Ali Hassan , Qazi Suman , Jarwar Umer ul din , Kandhro Abdul Ghani , Khan Madiha
Published: January 2021

Efficacy of various fungicides against powdery mildew of onion all chemical treated 1st, 2nd, 3rd and 4th observation Score observation in plants (out of 15) were 0.97, 2.89, 2.44 and 2.22 against 2.33, 9.00, 10.00 and 10.33 in control; disease infection 6.47, 20.00, 16.30 and 14.07% against 15.56, 60.00, 66.67 and 68.89% in control; infected leaves/plant 0.20, 2.04, 2.38 and 2.02 against 1.04, 4.36, 4.99 and 4.04 leaves in control, respectively. The Cabriotop observation resulted in infected plants 1.00, 2.56, 1.89 and 1.67 against 2.32, 9.00, 10.00 and 10.33 in control; disease infection 6.67, 17.04, 12.59 and 11.11 against 15.56, 60.00, 66.67 and 68.89% in control, infected leaves 0.41, 2.22, 2.62 and 2.07 against 1.04, 4.36, 4.99 and 4.04 in control, respectively with average bulb weight of 126.50g.The Relly observation in infected plants 0.96, 3.33, 2.78 and 3.11 against 2.33, 9.00, 10.00 and 10.33 in control; disease infection 6.42, 22.22, 18.52 and 20.74% against 15.56, 60.00, 66.67 and 68.89% in control; infected leaves 0.41, 2.22, 2.62 and 2.07 against 1.04, 4.36, 4.99 and 4.04 in control, respectively with average bulb weight of 116.38g against 74.34g in control. Defer plus at observation resulted in infected plants of 0.95, 2.78, 2.56 and 2.78  against 2.33, 9.00, 10.00 and 10.33 in control; disease infection 6.33, 18.52, 17.04 and 18.52% against 15.56, 60.00, 66.67 and 68.89% in control; infected leaves 0.50, 2.10, 2.48 and 1.96 against 1.04, 4.36, 4.99 and 4.04/plant in control; with average bulb weight of 101.63g, 106.97g and 112.61g overall average bulb weight of 107.07g against 74.34g bulb weight on average in control
COMPARATIVE ANALYSIS OF FLEXURAL STIFFNESS OF CONCRETE ELEMENTS WITH DIFFERENT TYPES OF COMPOSITE REINFORCEMENT SYSTEMS
Authors: Sulatani Haji Akbar , Gribniak Viktor , Rimkus Arvydas , Sokolov Aleksandr , Torres Lluis
Published: January 2021

Various materials and reinforcement technologies have been created for concrete structures. However, there is no uniform methodology to compare the mechanical characteristics of different reinforcement systems. In structural systems, residual stiffness can estimate the efficiency of the reinforcement. This study introduces a simplified approach for the flexural stiffness analysis. It employs a new testing layout designed with the purpose to form multiple cracks in a small laboratory specimen. The achieved solution requires neither iterative calculations nor a description of the loading history. Several composite reinforcement schemes, including internal glass fibre reinforced polymer (GFRP) bars, carbon fibre reinforced polymer (CFRP) sheets and near-surface mounted (NSM) strips are considered. The analysis of the test results reveals a substantial efficiency of the external CFRP reinforcement systems.
On the True Fractions of Repeating and Nonrepeating Fast Radio Burst Sources
Authors: Ai Shunke , Gao He , Zhang Bing
Published: January 2021

Observationally, fast radio bursts (FRBs) can be divided into repeating and apparently nonrepeating (one-off) ones. It is unclear whether all FRBs repeat and whether there are genuine nonrepeating FRBs. We attempt to address these questions using Monte Carlo simulations. We define a parameter T

c
at which the accumulated number of nonrepeating sources becomes comparable to the total number of repeating sources, which is a good proxy to denote the intrinsic repeater fraction among FRBs. Assuming that both types of sources exist and their burst energies follow power-law distributions, we investigate how the observed repeater fraction evolves with time for different parameters. If the lifetime of repeaters is sufficiently long that the evolutionary effect can be neglected within the observational time span, unless T

c
 → ∞  (i.e., there is no genuine nonrepeating FRB source), the observed repeater fraction should increase with time first, reach a peak, and then decline. The peak time T

p
and peak fraction F
r,obs,p depend on T

c
and other repeating rate parameters. With the current data, we pose a lower limit T

c
 > 0.1 day for reasonable parameter values. We predict that future continuous monitoring of FRBs with CHIME or similar wide-field radio telescopes would obtain an F
r,obs less than 0.04. The detection of a smaller peak value F
r,obs,p < 0.04 in the near future would disfavor the ansatz that “all FRB sources repeat.”
An Outburst by AM CVn Binary SDSS J113732.32+405458.3
Authors: Sunny Wong Tin Long , van Roestel Jan , Kupfer Thomas , Bildsten Lars
Published: January 2021

We report the discovery of a one magnitude increase in the optical brightness of the 59.63 minutes orbital period AM CVn binary SDSS J113732.32+405458.3. Public g, r, and i band data from the Zwicky Transient Facility exhibit a subsequent decline over a 300 days period, while a few data points from commissioning show that the peak was likely seen. Such an outburst is likely due to a change in the state of the accretion disk, making this the longest period AM CVn binary to reveal an unstable accretion disk. The object is now back to its previously observed (by SDSS and PS-1) quiescent brightness that is likely set by the accreting white dwarf. Prior observations of this object also imply that the recurrence times for such outbursts are likely more than 12 yr.
Viral Suppression is Comparable with 0.5 mg and 1.0 mg Daily doses of Entecavir in Treatment-Naive HBV-Related Decompensated Cirrhosis
Authors: Goel Amit , Rungta Sumit , Verma Prashant , Verma Abhai , Verma Ajay Narayan , Rai Praveer , Aggarwal Rakesh
Published: January 2021

Background

For patients with HBV infection who have decompensated cirrhosis (DC), a higher dose (1.0 mg/day) of entecavir is recommended than that used for those with compensated disease (0.5 mg/day), though with very little supporting data. We therefore compared the viral suppression achieved with 0.5 mg/day and 1.0 mg/day of entecavir in patients with HBV-related DC (NCT03345498).

Methods

Treatment-naive patients with HBV-related DC and serum HBV DNA titre exceeding 100,000 IU/ml received either dose of entecavir for 24 weeks. HBV DNA concentration was measured in blood specimens collected at baseline and after 2, 4, 8, 12 and 24 weeks of entecavir treatment.

Results

Participants in the 0.5 mg/day ( n=13) and 1.0 mg/day ( n=16) groups had similar baseline hepatitis B e antigen (HBeAg) positivity rates (12/13 and 12/16; P=0.34) and median (range) log10 serum HBV DNA levels (6.81 [5.01–8.12] and 7.45 [5.24–8.65]; P=0.17). The two doses led to similar reductions in serum HBV DNA levels after 2, 4, 8, 12 and 24 weeks of entecavir administration. At 24 weeks, 3 of the 13 patients receiving 0.5 mg/day and 1 of the 16 patients receiving 1.0 mg/day of entecavir had undetectable serum HBV DNA. Serum albumin level showed significant and similar improvement at the end of 24 weeks in the two groups.

Conclusions

Treatment-naive patients with HBV-related DC can be treated with entecavir in a 0.5 mg/day dose instead of the higher 1.0 mg/day dose, without compromising the degree of virological suppression. ClincialTrials.gov number NCT03345498.
Impact of Automated Vehicles on Optimal Demand-Responsive Feeder Transit Network Design
Authors: Nickkar Amirreza , Lee Young-Jae , Dadvar Seyedehsan
Published: January 2021

This article aims to examine the economic benefits of automating flexible demand responsive feeder transit systems using a developed feeder bus routing optimization algorithm. The objective function of the algorithm is to minimize total passengers' and operating costs of the system. The results showed that when unit operating costs decline, total operating costs, and total costs obviously decline. Furthermore, when unit operating costs decline, the average passenger travel distance and total passenger travel costs decline while the ratio of total operating costs per unit operating costs increases. That means if unit operating costs decrease, the portion of passenger travel costs in the total costs increases, and the optimization process tends to reduce passenger costs more while reducing total costs. Assuming that automation of the vehicles reduces the operating costs, it will reduce not only total operating costs and total costs, but also total passenger travel costs.
MyD88 Costimulation in Donor CD8+ T Cells Enhances the Graft-versus-Tumor Effect in Murine Hematopoietic Cell Transplantation
Authors: Ciavattone Nicholas G. , Wu Long , O’Neill Rachel , Qiu Jingxin , Davila Eduardo , Cao Xuefang
Published: January 2021

Donor-derived lymphocytes from allogeneic hematopoietic cell transplantation (allo-HCT) or donor lymphocyte infusion can mediate eradication of host tumor cells in a process labeled the graft-versus-tumor (GVT) effect. Unfortunately, these treatments have produced limited results in various types of leukemia because of an insufficient GVT effect. In this context, molecular engineering of donor lymphocytes to increase the GVT effect may benefit cancer patients. Activating MyD88 signaling in CD8+ T cells via TLR enhances T cell activation and cytotoxicity. However, systemic administration of TLR ligands to stimulate MyD88 could induce hyperinflammation or elicit protumor effects. To circumvent this problem, we devised a synthetic molecule consisting of MyD88 linked to the ectopic domain of CD8a (CD8α:MyD88). We used this construct to test the hypothesis that MyD88 costimulation in donor CD8+ T cells increases tumor control following allo-HCT in mice by increasing T cell activation, function, and direct tumor cytotoxicity. Indeed, an increase in both in vitro and in vivo tumor control was observed with CD8α:MyD88 T cells. This increase in the GVT response was associated with increased T cell expansion, increased functional capacity, and an increase in direct cytotoxic killing of the tumor cells. However, MyD88 costimulation in donor CD8+ T cells was linked to increased yet nonlethal graft-versus-host disease in mice treated with these engineered CD8+ T cells. Given these observations, synthetic CD8α:MyD88 donor T cells may represent a unique and versatile approach to enhance the GVT response that merits further refinement to improve the effectiveness of allo-HCT.
Rapid quantitative estimation of metformin and ertugliflozin in rat plasma by liquid chromatography-tandam mass spectroscopy and its application to pharmacokinetic studies
Authors: Rao P Venkateswarao , Rao A Lakshmana , Prasad SVUM
Published: January 2021

Background

The development of sound bioanalytical liquid chromatography-mass spectroscopy (LC-MS) method(s) is of paramount importance during the process of drug discovery and development, eventually culminating in marketing approval. The use of oral antidiabetic agents has been increased significantly from past decades, and till now, no bioanalytical method is available for quantitation of metformin (MET) and ertugliflozin (ERT) in the biological matrix that can be applied in bioequivalence studies using LC-MS/MS.

Objective

To study the use of highly responsive simple liquid–liquid extraction method development using deuterated MET and deuterated ERT, LC-MS/MS method for gradation of MET and ERT in the rat plasma.

Materials and methods

The chromatographic condition involves isocratic mode using Waters XBridge C18 3.5 μ (150×4.6 mm) column. Mobile phase was 0.1% orthophosphoric acid and acetonitrile in the ratio of 80 : 20 v/v. Detection was carried out on a triple quadrapole MS employing electrospray ionization technique, operating multiple reactions, monitoring with the transitions of m/z 258.2→174.1, m/z 250.1→210.2, m/z 258.2→174.1, and m/z 260.3→210.2 for MET, ERT, deuterated MET, and deuterated ERT, respectively, in the positive ion mode.

Results and conclusion

The method has been validated, and the linearity was observed in the range of 10–150 ng/ml and 0.1–1.5 ng/ml for MET and ERT, respectively. For intraday and interday %RSD, the values were found to be within the acceptable limits. Recovery studies for MET and ERT obtained, mean recovery of 99.5 and 98.6%, respectively. A battery of stability studies like bench-top stability, autosampler stability, freeze-thaw stability, and long-term stability were performed. Highly responsive simple LC-tandem MS assay method was developed and witnessed for the gradation of MET and ERT in the rat plasma; the developed method was applied to pharmacokinetic studies.
Remineralization Effect of Diode Laser, Nanoseal®, and Zamzam Water on Initial Enamel Carious Lesions Induced Around Orthodontic Brackets
Authors: Hosny Elkabbany Sara Mohamed , Mosleh Asmaa A. , Metwally Noha I.
Published: January 2021

Purpose:

This in vitro study was conducted to evaluate the remineralization effect of laser, Nanoseal®, and Zamzam water on initial enamel carious lesions of premolar induced around orthodontic brackets.

Materials and Methods:

A total of 40 premolars divided randomly into four groups were submitted to three phases: (1) placement of orthodontic brackets; (2) demineralizing solution; and (3) remineralization (Group L; teeth were irradiated with 980 nm diode laser for 30 s, Group N; Nanoseal® was applied to teeth according to manufacturer's instructions, Group Z; teeth were immersed in Zamzam water for 3 days then rinsed with deionized water, and Group C; control with no treatment). In each phase, elemental analysis (calcium and phosphorus) was measured using a scanning electron microscope/energy dispersive X-ray analysis. The data were tested using the Bonferroni test and Tukey's test.

Results:

There was a decrease in calcium ion content in Groups C and L in the third phase (−1.62% and − 0.1%, respectively) than the first one. On the other hand, an increase in calcium ion was shown in Groups Z and N (1.1 and 1.6%, respectively). An increase in phosphorus ion was obvious in all experimental groups ranging from 0.6% to 3.7%, with Group N having the highest increase of phosphorus ion from the first to the third phase.

Conclusions:

Using Nanoseal® and Zamzam water proved to be better than a diode laser for the treatment of initial carious lesions. The use of diode laser helps to remineralize enamel but in a lower percentage than other tested agents.
Readmission Rates of Heart Failure and Their Associated Risk Factors in a Tertiary Academic Medical City in Riyadh, Saudi Arabia
Authors: Aldihan Dalal A. , Alghafees Mohammad A. , Alharbi Rana O. , Allahidan Raghad S. , AlOmar Razan H. , Alenazi Areej F. , Suliman Ihab F.
Published: January 2021

Background:

Readmissions remain a persistent challenge in the care process of heart failure (HF). This study aimed to assess the 30 and 90-day readmission rates of HF and the associated risk factors.

Materials and Methods:

This retrospective cohort study targeted adult patients admitted for HF to King Abdulaziz Medical City between January 2016 and December 2018. The primary outcome variables were 30- and 90-day readmissions. Descriptive statistics were used for the continuous variables, which displayed the mean, standard deviation, and minimum and maximum values. The binary logistic regression technique was used to investigate risk factors for 30- and 90-day readmissions.

Results:

The 30- and 90-day readmission rates were 39.6% and 37.6%, respectively. Hypertension (P < 0.001), chronic kidney disease (P = 0.03), hypothyroidism (P = 0.04), and pulmonary diseases (P < 0.001) were all deemed as risk factors for readmission within 30 days. Body mass index (P = 0.03), dyslipidemia (P = 0.04), chronic kidney disease (P = 0.03), arrhythmias (P = 0.007), and pulmonary diseases (P < 0.001) were all deemed as significant predictors of readmission within 90 days.

Conclusion:

The 30- and 90-day readmission rates were 39.6% and 37.6%, respectively. Hypertension, chronic kidney disease, hypothyroidism, and pulmonary diseases were significant predictors for 30-day readmission. Body mass index, dyslipidemia, chronic kidney disease, arrhythmias, and pulmonary diseases were significant predictors for 90-day readmissions. These predictors must be taken into consideration to develop strategies to reduce readmission rates and mitigate a burden on health-care resources and patients' morbidity.
Branch retinal artery occlusion as an initial ocular manifestation of severe iron deficiency anemia
Authors: Deb Amit Kumar , Subramaniam Swathi , Sarkar Sandip , Suneel Sangaraju , Elamurgan Vignesh , Kaliaperumal Subashini
Published: January 2021

Ocular manifestations of anemia include conjunctival pallor, retinal hemorrhages, cotton wool spots, Roth spots, subhyaloid hemorrhage, venous dilatation, disc edema, and anterior ischemic optic neuropathy (AION). Retinal arterial occlusion is a very rare complication of iron deficiency anemia. We, hereby, report such a rare case of branch retinal artery occlusion (BRAO) occurring as a complication of iron deficiency anemia. A 49-year-old female presented with sudden painless diminution of vision in her right eye (RE) for 2 weeks with visual acuity of 20/120 in the affected eye and 20/20 in the left eye. Fundus examination of RE showed disc pallor, arteriolar attenuation, and retinal whitening at macula. Fluorescein angiography study demonstrated delayed filling of superotemporal branch of retinal artery, suggesting BRAO as the cause of vision loss. Thorough evaluation for underlying etiology revealed severe iron deficiency anemia (hemoglobin 3.9 g/dl). Her blood pressure, blood sugar profile, lipid profile, carotid Doppler, echocardiogram, coagulation profile, and immunological workup were all unremarkable. She was treated with packed cell transfusion and oral iron supplementation, and her vision improved to 20/40 at 1-month follow-up. Retinal vascular occlusions can occur rarely in iron deficiency anemia, and therefore anemia should be considered, while evaluation of vascular occlusion – specially in those with associated conjunctival pallor as in our case.
Révolution(s) et migration(s) à travers le langage : le cas du spanglish
Authors: TINCHANT-BENRAHHO Sabine
Published: January 2021

Le spanglish, qui, comme son nom l’indique, mélange l’anglais et l’espagnol, est un code mêlé présentant différentes procédures d’hybridation, variables selon les contextes géographiques, historiques et surtout selon les locuteurs, leur(s) usage(s) et leur(s)s intention(s) sociolinguistique(s). Il s’agit d’une langue hybride, variée et plurielle, en pleine évolution. A travers la langue spanglish, nous nous interrogerons sur la terminologie liée à l’immigration et aux génération(s), et ses implications en sociolinguistique, puis nous aborderons les processus transmissionnels du spanglish et son positionnement identitaire comme « troisième voix » possible dans le contexte états-unien.
Une politisation du renseignement : les services de surveillance français face aux attentats franquistes (1936-1937)
Authors: SALMON Pierre
Published: January 2021

La Guerre Civile espagnole (1936-1939) donne lieu à une sourde lutte internationale entre les agents de chaque camp. En France, une vague d’attentats contre les intérêts républicains en constitue l’un des ressorts les plus manifestes. Les services français de surveillance peinent d’abord à interpréter ce phénomène, attribué à tort aux anarchistes. Des partisans du camp franquiste sont ensuite mis en cause sans que des mesures de forte incidence soient prises à leur égard. Pour le comprendre, cet article revient sur la « politisation du renseignement » déjà mise en évidence par Peter Jackson à propos du conflit espagnol.
Microficciones, residuos, spam: hacia una redefinición del género en un contexto en red
Authors: GÓMEZ TRUEBA Teresa
Published: January 2021

En este artículo se abordará el concepto de lo microficcional con la voluntad de redefinirlo a partir de su apabullante expansión en las redes. Desde las canónicas definiciones de los años 90, el género ha desbordado los contextos iniciales de transmisión (antologías, revistas…), para propagarse y reubicarse en nuevos entornos (internet, redes sociales…) que, sin duda, redefinen también sus inherentes características. A partir de las múltiples prácticas apropiacionistas e intervencionistas de las que, tanto en entornos digitales como postdigitales, esas microficciones son fruto en nuestros días, el artículo se propone ahondar en la confluencia entre estas y conceptos como los de “residuo” o “ruina”, utilizados por Nicolas Bourriaud en su descripción de una estética radicante para el arte y la cultura del siglo XXI.
Reflexiones sobre el concepto de minificción relacionadas con la literatura hispánica y francófona
Authors: ANDRES-SUÁREZ Irene
Published: January 2021

Este trabajo consta de dos partes y un anexo. En la primera, basándose en la etimología y en los rasgos discursivos, formales y pragmáticos de la minificción y del microrrelato, la autora analiza ambos conceptos y explica por qué dichos términos no pueden utilizarse como sinónimos. En la segunda parte, pasa revista a los tres marbetes más utilizados en la francofonía para designar lo que en el mundo hispánico se llama microrrelato: micronouvelle, microfiction y microrécit y, apoyándose en los textos de Jacques Sternberg, Pierre Bettencourt, Georges Koleba, Jean-Paul Dubois y David Thomas, traza brevemente la trayectoria de esta modalidad discursiva en lengua francesa. El anexo reúne un manojo de microrrelatos paradigmáticos de estos autores.
L’ Étrange ordinaire d’Os transparentes d’Ondjaki
Authors: DOS SANTOS Barbara
Published: January 2021

Le présent article cherche à montrer comment l’œuvre Os transparentes d’Ondjaki participe à l’écriture du quotidien dans le contexte luandais post-guerre. Dans un premier temps nous nous interrogerons sur l’étude de l’ordinaire en littérature pour comprendre par la suite en quoi cette perspective d’analyse nous semble particulièrement pertinente pour cette œuvre. Dans une troisième partie nous observerons comment cette expérience de l’ordinaire débouche sur une déviation du réel en raison d’un contexte politique et social inadapté et défavorable.
Cuba terre d’asile : Camila Henríquez Ureña ou la contribution d’une Dominicaine au féminisme cubain
Authors: MOREAU-LEBERT Mélanie
Published: January 2021

En 1994, le « Programme d'études sur les femmes » de la Casa de las Americas, dirigé par Luisa Campuzano, voit le jour à Cuba, et devient certainement le plus grand espace de réflexion sur le féminisme et les questions de genre depuis le triomphe de la Révolution. Cette même année, on célébrait le centenaire de la naissance d'une femme qui, si elle n'est pas née à Cuba, a laissé une forte empreinte, en tant qu'intellectuelle, éducatrice, écrivaine et surtout en tant que penseuse du féminisme : Camila Henríquez Ureña.
Sistem Pakar Diagnosa Penyakit Ginjal dengan menggunakan Algoritma Bayes
Authors: Khoironi  , Abdul Rosyid  , Muhammad Azmi
Published: January 2021

Sistem pakar adalah sistem yang berbasis komputer yang menggunakan pengetahuan, fakta dan tehnik penalaran dalam memecahkan masalah yang biasanya hanya dapat dipecahkan oleh seorang pakar dalam bidang tertentu. Sistem pakar memberikan nilai tambah pada teknologi untuk membantu dalam menangani era informasi yang makin canggih. Aplikasi sistem pakar ini menghasilkan keluaran berupa kemungkinan penyakit ginjal yang diderita berdasarkan gejala yang dirasakan oleh user. Sistem ini menggunakan metode Bayes.

Sistem akan mencari nilai probabilitas tertinggi, dari berbagai kemungkinan jenis penyakit berdasarkan gejala yang dimasukkan user dan hasilnya ditampilkan kepada user. Sistem pakar untuk mendiagnosis penyakit ginjal ini menghasilkan keputusan penentuan jenis penyakit berdasarkan gejala yang dipilih user. Nilai Bayes yang mungkin dihasilkan adalah antara 0 sampai 1. Jika nilai Bayes yang dihasilkan semakin mendekati 1, maka semakin tinggi kepastian terkena penyakit terkait. Sebaliknya, jika nilai Bayes yang dihasilkan semakin mendekati 0, maka semakin rendah kepastian terkena penyakit terkait.
Drinks Like a Fish: The Effects of Ethanol on Associative Learning in Zebrafish (Danio rerio)
Authors: Fort Troy D. , Negley Jacob , McEwen Tamara
Published: January 2021

The present study sought to elucidate whether neural maturation has a mitigating effect on ethanol and its concomitant effects on memory. Three-month old zebrafish were acclimated to a plus maze using a habituation procedure. After acclimatization to the maze, associations between the red cue cards and reward were formed via a shaping procedure. Following the final shaping day, food was removed from the maze and red cues were only present in one arm. The time it took for the fish to go from the start box to the cued arm was then measured. Afterwards, fish were exposed to 0.00, 0.25, or 0.75% ethanol (v/v) for 72 hours. Post-exposure memory performance was tested at 0.5-day, 5-day, and 14-day endpoints. Three primary findings were noted. First, no significant difference in run time was found within the control group at any time point, suggesting an adept associative memory system in zebrafish. Second, no significant difference in run time was found when comparing 0.25 and 0.75% (v/v) ethanol groups. Therefore, these treatments were pooled for further analyses. Third, the most significant impairment was observed at the 0.5-day post exposure time point indicating that ethanol has a significant impact on recently learned associations. Finally, no significant difference in run time was observed within the pooled treatment group on subsequent time points. This capacity for recovery was a key difference from what was observed in previous studies.
Emerging trends and recent developments in education research
Authors: Ulrich Cătălina
Published: January 2021

This article reports an analysis on methodological and thematic trends in the field of educational research. The introduction presents main challenges regarding recent insights and pressure for research in universities as well as main objectives. Theoretical framework section reflects actual debates regarding educational research within the social science area and under pressure of public accountability and funding in European Union universities and US. Next section describes data sources and processing, using mainly content analysis on three largest research networks: AERA (founded in 1916), EERA (founded in 1994) and WERA (founded in 2009). Comparative analysis provides interesting information regarding the history, missions, priorities, principles and regulations on carrying educational research. One the one hand, there are noticeable differences in time gap, practice-orientation, social responsibility and funding policies for university research in Europe and US. On the other hand, EU's struggle in competition with US puts pressure on education researchers; university ranking and impact evaluation are seen as external and mainly originated in US tradition. Findings about the dynamics of research networks, problem-driven and contextual sensitive approach, integrated research endeavour (inter and trans-disciplinary), teams flexibility and emerging interests could have a double impact. It could inspire ongoing efforts of redesigning the doctoral studies programs at the University of Bucharest and also the PhD students' identity and career building occurring in real institutions and academic sphere.
The study of the obstacles and errors in the modern didactics. Particularizations for middle school mathematics: Methodological aspects of empirical research
Authors: Căprioară Daniela
Published: January 2021

The learning approach in a constructivist manner implies, among other things, considering the obstacles that arise in carrying out this process and are manifest, if they are not overcome, at the level of the learning outcome, by errors. In mathematics learning, some of these obstacles are isolated and more difficult to control didactically. However, most of them have a phenomenological character and, consequently, the identification of their nature (epistemological, psychological or didactic (Astolfi, 1997)) is required. This co-ordinate sets new dimensions to the didactic field, generating a new paradigm concerning the role of errors in mathematics study.
The problematic fields, the scientific and aplicative topics in special education in compliance with national and European policies and strategies regarding disabilities (II)
Authors: Crețu Verginia
Published: January 2021

In the second part of article the identified problematic fields, the scientific and applicative topics in Special Education in compliance with national and European policies and strategies regarding disabilities are: positive approach in education that require to focus on the evolving capacities, gifts, abilities and competencies of the child; conditions of real inclusion in teaching-learning process; the support for children with severe and profound handicap through augmentative and alternative communication; psycho­pedagogy of Individualized Education Program" (IEP); multidisciplinary research programs on assistive and access technology, early education , vocational education and support for employment. The article analyse too the dynamic of paradigms and theories in Special education
Dominante motivaționale pentru performanță și satisfacție în muncă în mediul militar
Authors: Ionică Cristina
Published: January 2021

The aims of this study is to capture the relationship between motivational sources (typology proposed by Leonard, Beauvais and Scholl, 1999), achievement motivation (Schuler, Thornton and Frintrup, 2000) and job satisfaction (Spector and Lamond, 2002) in order to identify those motivational features that can help to improve job performance and job satisfaction in an organizational environment affected by nowadays economic crisis. There are some general rules which apply to everyone, but most people are usually motivated by what they perceive as rewards and there are different ways to get them committed and motivated. An evolving socio-economic context creates prerequisites for continuous readjustments of strategies to motivate employees in order to obtain job performance and job satisfaction. The results of this study, based on data collected from JOO subjects who work in the Romanian public institution allowed us to approach motivation as a process and to diagnose and plan a new organizational strategy for improving job performance, job satisfaction and commitment in this particular organizational sector.
A Docência em um contexto de violência: reflexões sobre o trabalho do socioeducador
Authors: Brito José Ruthenho Rodrigues de
Published: January 2021

O presente trabalho trata objetivamente, com a preocupação fundamental da docência e a questão da violência urbana no cotidiano. Partindo desse princípio, vai buscar nos teórico aqui abordados, respostas para questões levantadas a rigor. Saber dos procedimentos aplicados na recuperação do adolescente ou jovem envolvido com essa violência, se as medidas socioeducativas aplicadas pelo Estado, são capazes de reintegrá-lo à sociedade.Verificar quando dessa passagem, o jovem é devolvido totalmente recuperado, sob a visão do socioeducador e seu papel dentro desse processo de ressocialização. Buscando também identificar as dificuldades encontradas pelo socioeducador em suas práticas pedagógicas e como é realizado o ensino regular junto aos jovens em conflito com a lei e a avaliação na qual é pontuado o socioeducador. Por fim, interpretar à luz dos documentos oficiais se o atendimento oferecido aos jovens internos está de acordo com os direitos da criança e do adolescente e de acordo com os Direitos Humanos
Monetary Policy in Nigeria: Investigating the Role of Private Sector Credit
Authors:   Central Bank of Nigeria, U. Musa
Published: January 2021

This study examines the interest rate channel of monetary policy rates through private sector credits to prices. It applies an approach that is not common in monetary policy transmission mechanism in literature as many studies on transmission mechanism of monetary policy only examine statistical relationship between policy variables and target variables which may not be able to explain the pathway through which the monetary policies are transmitted. This paper uses mediation approach to assess the significance of causal path of interest rate through the bank lending channel. This paper dwelt on the transmission paths- from maximum interest rate, inter-bank call rate, treasury bill rate to prices through the private sector credits. The findings of this study lay credence to effective and significant transmission effects of interest rates (maximum lending rate, interbank lending rate and treasury bill rate) through private sector credit to prices. The paper concludes that maximum lending rate path has the highest significant transmission effect to prices. This is followed by the treasury bill rate and the inter-bank call rate respectively. The findings in this study is new in the case of Nigeria as no previous studies have applied mediation approach to the study of transmission mechanism of bank lending channel in Nigeria. Central banks should explore ways to effectively make policy towards effectively directing the monetary policy through maximum lending rate and treasury bill rates as they have the most significant paths through which the monetary policy rate is transmitted to prices.
Can Global Trade Of Medical Supplies Solve The Covid-19 Puzzle?
Authors:   Associate Professor of international economics, Helwan University, Egypt. Home Address: 6th of October City, Giza, Egypt, Shaker Saber Adly
Published: January 2021

The main aim of this study to determine the explanatory variables of the Chinese exports of COVID-19 medical supplies to its 89 major trading partners in the first half of the year 2020. In addition, it explores the puzzle of COVID-19 pandemic outbreak from an economic perspective. We used the Ordinary-least-square (OLS) regression under a cross-sectional data framework to construct the quantitative analysis. The main findings are: First, the number of old population and the number of COVID-19 confirmed cases in the trading partner have been drivers of Chinese exports of COVID-19 medical supplies. Second, tariff barriers levied on the trading partner significantly impedes the Chinese exports of COVID-19 medical supplies to its trade partners, especially from middle-income countries. In future work, the analysis of this type of trade through the supply-side factors could be investigated. Also, some other variables such as non-tariff measures could be utilized. The study encourages literature for empirically analyzing the trade of medical supplies, in general, under econometric modeling. The results are illustrated based on consistent quantitative evidence.
The Effect of Market Orientation and Entrepreneurship Orientation to Competitive Advantage and Performance
Authors:   Department of Management, Hindu Indonesia University, Bali, Indonesia, Trarintya irah Ayu Putri
Published: January 2021

This study aims to explain the effect market orientation, entrepreneurship orientation and competitive advantage on performance. The population in this study was all Micro, Small and Medium Enterprises enrolled in Bali. Samples taken based on probability sampling techniques are simple random sampling, where researchers provide equal opportunities for each member of the population (employees) to be chosen as samples randomly regardless of the strata in the population itself with a total sample of 100 enterprises. This examination tried by quantitative techniques with SEM-PLS investigation. The consequences of theory testing demonstrate that 1 of 5 speculations were dismissed. Market orientation not impacts on performance. Market orientation and business enterprise orientation has positive and significant impact to competitive advantage. Business orientation and competitive advantage has positive and significant impact to performance. The example utilized in this examination is restricted with regards to Micro Small and Medium Enterprise. Proposals for further research by including another variable that was not recently contemplated. Useful ramifications in this examination is industry administrators ought to adjust their CPMS to incorporate estimates explicit to intra-hierarchical business enterprise and development and should seek after more noteworthy comprehension of changing client inclinations. This examination offers performance to improve business orientation and item advancement with the goal that it will expand competitive advantage which effects on MSMEs performance.
Capital Structure and Financial Returns: Longitudinal Panel Evidence from NReits
Authors:   Ezeh Ezeh & Company, Estate Surveyors and Valuers, Enugu, Nigeria, Aguome Njideka Maryclara
Published: January 2021

The study is an investigation of the nexus between capital structure and financial returns. The investigation was conducted on a panel data of all real estate investment trusts in Nigeria (N-REITs) listed in the Nigerian Stock Exchange during 2009 to 2020. The independent variable was capital structure indicators of short-term debt, long-term debt and total debt. The dependent variable was proxied using 3 accounting measures of return on asset, return on equity and earnings per share. Data was sourced from secondary sources, specifically from the annual records and financial statements of N-REITs for the period. Upon data analysis with regression, the study found that capital structure had an insignificant relationship with the financial returns of N-REITs. However, for Sky Shelter Fund REIT, the result was contrary due to its statistically significant positive relationship between capital structure and returns. The findings of the study on the means, median and standard deviation of NREIT capital structures shows a compliance with the pecking-order hypothesis of firm financing.
A HIGH-PERFORMANCE AND LOW-POWER DELAY BUFFER
Authors: KRISHNA.M GOPALA , SANKAR.CH UMA , S NEELIMA. , RAO.P KOTESWARA
Published: January 2021

In this paper, presents circuit design of a low-power delay buffer. The proposed delay buffer uses several new techniques to reduce its power consumption. Since delay buffers are accessed sequentially, it adopts a ring-counter addressing scheme. In the ring counter, double-edge-triggered (DET) flip-flops are utilized to reduce the operating frequency by half and the C-element gated-clock strategy is proposed. Both total transistor count and the number of clocked transistors are significantly reduced to improve power consumption and speed in the flip-flop. The number of transistors is reduced by 56%-60% and the Area-Speed-Power product is reduced by 56%-63% compared to other double edge triggered flip-flops. This design is suitable for high-speed, low-power CMOS VLSI design applications.
HRV ANALYSIS USING ECG AS DATA SOURCE
Authors: DESHPANDE RASHMI A.
Published: January 2021

Heart Rate Variability (HRV) is a physical phenomenon where the time interval between heart beats varies. It is measured by the variation in the beat to beat interval. Abnormalities present in the time interval between R wave peaks in the Electro-cardiogram (ECG) indicate cardiac dysfunction. Autonomic Nervous System controls the cardiac activity of the body and provides the beat to beat regulation of the cardiovascular system. Thus Heart Rate Variability is an important tool to access autonomic function also. The source for HRV is a continuous beat to beat measurement of interbeat intervals. An ECG signal can be used as the data source for HRV analysis. In this study the HRV data is obtained from ECG signal and is processed to calculate spectral HRV index, LF/HF ratio.