bluuebunny/crossref_metadata_2025 huggingface dataset:
The Role of Long-Term Electroencephalogram Monitoring in the Prognostic Evaluation of Children with Disturbance of Consciousness in Pediatric Intensive Care Unit
Authors: Wu Xiaobo , Qiu Ruiqin , Li Baoqi , Gao Heyuan , Su Ying
Published: December 2021

This study aimed to investigate the role of long-term video electroencephalogram (VEEG) monitoring in the diagnosis and prognostic evaluation of children with disturbance of consciousness in pediatric intensive care unit (PICU). Materials and Methods : A retrospective analysis was
performed on the medical records of 107 children with severe brain injury (SBI) who admitted to the PICU of The First Hospital of Qinhuangdao from January 2014 to December 2015. The medical records of 100 children with mild disturbance of consciousness were analyzed. All children underwent
routine electroencephalogram (REEG) and VEEG detections. The diagnosis was completed by physicians according to the relevant operation instructions. The brain waveform of children was monitored. Result : The diagnostic results of REEG and VEEG were compared with clinical diagnostic results,
and the relationship between the two detections and the prognosis of SBI children was analyzed. The sensitivity of VEEG in the diagnosis of SBI children was significantly higher than that of REEG (P<0.050). The specificity of VEEG in the diagnosis of SBI children was higher than that of
REEG, with a statistical significance (P<0.050). The diagnostic compliance rate of VEEG in the diagnosis of SBI children was significantly higher than that of REEG (P<0.050). The sensitivity of VEEG in evaluating the prognosis of SBI children was significantly higher than that of REEG
(P<0.050). The specificity of VEEG in evaluating the prognosis of SBI children was significantly higher than that of REEG. The coincidence rate of VEEG in evaluating the prognosis of SBI children was significantly higher than that of REEG (P<0.050). Conclusion: The results indicated
that VEEG detection is effective in the diagnosis and prognostic evaluation of SBI children with disturbance of consciousness, which is worthy of promotion in clinical practice.
Sustainable Design Method for E- cigarette Products from the International Perspective
Authors: Huajie Wang , Jianxin Cheng
Published: December 2021

Objectives: Tobacco companies from various countries are facing pressure to participate in global competition. How to improve the products’ quality is important for the tobacco companies. In this study, based on the international perspective, the scale of E-cigarette product
design evaluation is established, the brand value and cultural experience are integrated into the design activities, the design quality of the product is improved, and the culture is sustainable develop. Methods: This article constructs a product design system based on culture, experience
and brand value perspectives by studying outstanding design brands product characteristics, using interviews and focus groups. This system includes design content in five aspects: value, aesthetics, function, innovation, and cultural experience. It further summarizes 20 design indicators.
Using the analytic hierarchy process, the weight of the 20 design indicators is scored to determine the importance of guiding the design project. Results: In order to prove the effectiveness of the design index, combined with actual cases, in the process of designing a local brand of E-cigarette
products in China, combined with relevant design indexes, compared with the index differences of international brands, focusing on 20 indexes The index with high weight value has studied the advanced aspects of international brand and completed the design of new products. The new proposal
of the product was re-evaluated according to the design indicators. The new proposal has been significantly improved in all aspects. Conclusion: The actual results show that the established design indicators have certain guiding value for the development of new products. These indicators can
be used as reference standards for design practice, and can also be used as standards for product design evaluation. They also have a certain value of new product development in other fields.
Application of Peppermint Water Spray Combined With Cucumber Slice External Application or Lip Balm and Conventional Dipping in ICU Dry Mouth Patients
Authors: Gao Yang , Li Liang , Peng Qingyun , Yang Yahui , Xu Huifen , Song Chunmei , Wu Juan
Published: December 2021

to analyze the effect of peppermint water spray combined with external application of cucumber slice or lip balm and conventional dipping in patients with dry mouth in intensive care unit (ICU). Methods: 120 patients with secondary xerostomia in our hospital from January 2018 to
December 2019 were selected as the subjects. According to the different treatment methods, the patients were divided into A group (Peppermint water spray combined with cucumber slices for external application), group B (Peppermint water spray combined with lip gloss smear), group C (cotton
swab dipped in normal saline), 40 cases in each group, and the saliva secretion and dry mouth before and after intervention in three groups were compared between the three groups. The degree of self-evaluation score and the evaluation of throat comfort and satisfaction after intervention.
Results: after the intervention, the self-evaluation scores of salivary secretion and dry mouth degree of patients in group A and B were significantly higher than those before the intervention (P < 0.01), the self-evaluation scores of salivary secretion and dry mouth degree of patients
in group A were significantly higher than those in group B and C (P < 0.01), and the self-evaluation scores of salivary secretion and dry mouth degree of patients in group B were significantly higher than those in group C (P < 0.01). After intervention, the total effective rate of improvement
of throat comfort in group A was 87.50%, which was significantly higher than 40.00% in group B and 0.00% in group C (P < 0.01). The total effective rate of improvement of throat comfort in group B was significantly higher than that in group C (P < 0.01). 97.50% of the patients in group
A were significantly higher than 72.50% in group B and 2.50% in group C (P < 0.01), and the patients in group B were significantly higher than those in group C (P < 0.01). Conclusion: homemade peppermint water spray combined with external application of cucumber spray can effectively
improve the symptoms of dry mouth and throat discomfort in patients with ICU, improve their satisfaction with treatment, and is conducive to the recovery of patients’ diseases, which is worthy of clinical promotion and application.
Preventative Value of Predictive Health Interventions on PICC-Related Thrombosis in Patients with Severe Burns
Authors: He Baiyan , He Shuting
Published: December 2021

Background Burn mainly refers to the damage caused by high temperature to the skin and mucous membrane tissue. Seriously, it causes damage to the subcutaneous tissue or subcutaneous mucous membrane, which is easy to induce infection and poses a threat to the life safety of patients.For
patients with deep burns, surgical removal of damaged skin and mucosal tissue, Postoperative,immediate coverage of surgical wounds,avoid infection due to body fluid and energy loss with related tissue necrosis.The clinical treatment period for critical burn patients is longer and high incidence
of postoperative complications.The corresponding nursing intervention while undergoing treatment can help to eliminate the impact of the bad psychological state on the patients, improve the treatment compliance, and reduce the occurrence of complications.

Objective Evaluation of
the value of predictive health intervention in preventing thrombosis associated with Peripherally Inserted Central Catheter (PICC) via peripheral vein in critically ill burn patients

Methods Select 90 patients with severe burn treated by PICC infusion from January 2019- February
2021, Group by reference to intervention methods, with 45 using conventional health intervention (control group) and another 45 using predictive health interventions (observation group). The incidence of pulmonary and wound infection, the incidence of adverse events associated with PICC catheterization
and wound healing time were recorded in the two groups. The degree of pain was evaluated by visual simulation (VAS) score, and the differences of platelet, D- dimer (D-D) and hemodynamics were detected in the two groups

Results The incidence of pulmonary infection, PICC associated
thrombus and total adverse events in the observation group was lower, and higher rate of functional recovery,but less wound healing time with control group,which had statistical significance (P<0.05) .Incidence of wound infection, incidence of catheter blockage, incidence of unplanned extubation,the
difference was not statistically significant (P>0.05) .Comparison before intervention/The pain score decreased at 7 ck 14d> 21d (P<0.05), and the observation group was lower than the control group (P<0.05) .Intervention of the 7d, 14d two sets all platelet elevation (P< 0.05)
,but D-D concentration decreases (P< 0.05) .Intervention of the 7d> 14d two sets was increased of the intrathoracic blood volume index (ITBVI) (P<0.05) , but extravascular lung water index (EVLWI) and mean arterial pressure (MAP) the difference was not statistically significant (P>0.05).

Conclusions
Predictive health intervention can reduce the pain degree of critically burned patients, reduce the incidence of adverse events such as infection and PICC-related thrombosis, and promote wound recovery.
Effects of 0.15% Ropivacaine Alone and Combination with Sufentanil on Epidural Labor Analgesia and Adverse Reactions
Authors: Zhong Huanhui , Wang Yongdong , Wang Yiqun , Li Heng
Published: December 2021

To compare the effects of 0.15% ropivacaine alone and combination with sufentanil on epidural labor analgesia and adverse reactions. Methods: A total of 297 eligible primiparae were randomly divided into group A (n=149, 0.15% ropivacaine + sufentanil) and group B (n=148, 0.15% ropivacaine).
Visual analogue scale (VAS) scores before analgesia and 20 min after epidural medication, and maximum VAS score during labor were observed. The times of patient-controlled analgesia (PCA) pump pressing and remedial analgesia, dosage of analgesic drugs, modified Bromage score, satisfaction
degree, duration of labor, mode of delivery, 1-min and 5-min Apgar scores of newborns, adverse reactions during analgesia, and fever during labor were recorded. Results: VAS score 20 min after epidural medication and maximum score during labor were significantly lower in both groups than those
before labor analgesia (P<0.05), but the two groups had similar scores (P>0.05). The two groups had similar times of PCA pump pressing and remedial analgesia, dosage of analgesic drugs, modified Bromage score and satisfaction degree (P>0.05). They had similar duration of labor, mode
of delivery and 1-min and 5-min Apgar scores of newborns (P>0.05). There were 13 cases (8.72%) and 0 cases of pruritus in group A and B, respectively (P<0.05). They had similar incidence rates of nausea and vomiting, urinary retention and fever during labor (P>0.05). Conclusions:
The epidural labor analgesia effect of 0.15% ropivacaine is comparable to that of 0.15% ropivacaine + 0.05 ng/mL sufentanil for primiparae, but the incidence rate of pruritus plummets when ropivacaine is used alone.
A NOTE ON GENERALIZED RAINBOW CONNECTION OF CONNECTED GRAPHS AND THEIR NUMBER OF EDGES
Authors: Nguyen Thi Thuy Anh , Le Thi Duyen
Published: December 2021

Let l ≥ 1, k ≥ 1 be two integers. Given an edge-coloured connected graph G. A path P in the graph G is called l-rainbow path if each subpath of length at most l + 1 is rainbow. The graph G is called (k, l)-rainbow connected if any two vertices in G are connected by at least k pairwise internally vertex-disjoint l-rainbow paths. The smallest number of colours needed in order to make G (k, l)-rainbow connected is called the (k, l)-rainbow connection number of G and denoted by rck,l(G). In this paper, we first focus to improve the upper bound of the (1, l)-rainbow connection number depending on the size of connected graphs. Using this result, we characterize all connected graphs having the large (1, 2)-rainbow connection number. Moreover, we also determine the (1, l)-rainbow connection number in a connected graph G containing a sequence of cut-edges.
EQUILIBRIUM VACANCY CONCENTRATION AND THERMODYNAMIC QUANTITIES OF FCC DEFECTIVE ALLOYS AuCuSi AND PtCuSi UNDER PRESSURE AND TEMPERATURE
Authors: Le Hong Viet , Nguyen Quang Hoc
Published: December 2021

We present the analytic expressions of the cohesive energy, the alloy parameters, the equation of state, the mean nearest neighbor distance, the Helmholtz free energy, equilibrium vacancy concentration, and thermodynamic quantities such as the isothermal compressibility, the thermal expansion coefficient, the heat capacities at constant volume and constant pressure for facecentered cubic (FCC) defective ternary substitutional and interstitial alloy ABC derived by the statistical moment method (SMM). The obtained thermodynamic quantities depend on temperature, pressure, the concentration of substitutional atoms, the concentration of interstitial atoms, and equilibrium vacancy concentration. Thermodynamic quantities of FCC defective metal A, FCC defective substitutional alloy AB, and FCC defective interstitial alloy AC are specific cases for thermodynamic quantities of FCC defective ternary substitutional and interstitial alloy ABC. The theoretical results are calculated numerically to alloys AuCuSi and PtCuSi. Our calculated results of thermal expansion coefficient and heat capacities at constant pressure for main metals Au, Pt are in good agreement with experimental data. Our other calculated results for thermodynamic quantities of alloys AuCuSi and PtCuSi at different temperatures, pressure, the concentration of substitutional atoms, and concentrations of interstitial atoms orient and predict new experimental data in the future.
IN VITRO ANTIOXIDANT ACTIVITY OF C-PHYCOCYANIN PURIFIED FROM Spirulina platensis DRY BIOMASS
Authors: Pham Thi Bich Dao , Nguyen Thi Hoai Ha , Vu Thanh Cong , Phung Van Hoan , Tran Quoc Binh , Nguyen Ngoc Linh
Published: December 2021

C-phycocyanin (C-PC) was a phycobiliprotein found exclusively in cyanobacteria as Spirulina and exhibited a variety of pharmacological properties, which were not yet studied for any purpose in commercial applications in the pharmaceutical and cosmetic industry in Vietnam. At present, there are no other sources of natural phycocyanin than Spirulina, it is the sole efficient source of natural phycocyanin production under photoautotrophic conditions. The present research was conducted to determine an efficient extraction method from C-PC from Spirulina platensis dry biomass. Antioxidant activity of purified C-PC was investigated. Extractions were carried out using distilled water and Na-phosphate buffer pH 7.0 as solvents and freeze\thaw and ultrasonication techniques were applied to optimize the extraction process. Extraction using the freeze\thaw method proved to be the most efficient method. Phycocyanin purification from crude extracts was carried out by a combination of methods such as ammonium sulfate (NH4)2SO4 65% precipitation, dialysis filter, and Sephadex G-100 gel filtration chromatography, to give 121.63 ± 0.03 mg\g C-PC content and 3.52 ± 0.04 purity. Antioxidant activity in vitro was determined by nitric oxide (NO) scavenging activity, percentage inhibition of NO by the C-PC in concentration 10 μg\mL to 100 μg\mL which significantly scavenged 55.89% to 91.54% of NO radicals, respectively. They exhibited strong NO radical scavenging capacity, the C-PC and vitamin C were able to reduce the stable NO radical to 50% reduction with EC50 of 4.53 and 3.66 µg\mL. Research results showed that S. platenis dry biomass provided by Dalitra was potential for obtaining C-phycocyanin (12.16% of dry biomass) and it was evaluated as an antioxidant in vitro able to scavenge nitric oxide. C-PC (12.16% of dry biomass) and was evaluated as an antioxidant in vitro able to scavenge nitric oxide.
VIETNAMESE Phellinus baumii FRUITING BODY, A POTENTIAL SOURCE OF ANTIOXIDANT AND α-AMYLASE INHIBITORY AGENTS
Authors: Mai Phuong Thuy , Do Thi Hong , Le Thi Tuyet Mai , Le Thi Phuong Hoa
Published: December 2021

n-Hexane, ethyl acetate, and butanol fractions from methanol extract of Vietnamese Phellinus baumii fruiting body consisted of phenolics, flavonoids, and terpenoids. Ethyl acetate and butanol fractions showed a high level of total phenolics. Ethyl acetate fractions possessed the highest phenolic content (532.96 ± 19.95 mg GAE\g), accounting for approximately 53% fraction dry weight. Free radical DPPH (1,1-diphenyl-2-picrylhydrazyl) scavenging capacity of all fractions correlated with their total phenolic content. Ethyl acetate fraction exhibited the strongest capacity with an IC50 value of 0.059 mg\mL, equivalent to nearly 50% of ascorbic acid’s capacity. Its ferric reducing power was off more than half of quercetin and acid ascorbic at the concentration of 0.2 mg\mL. Ethyl acetate also had remarkable α-amylase inhibitory activity (IC50= 0.38 mg\mL). The results suggested P. baumii fruiting body as a potent source for antioxidative and α-amylase inhibitory compounds.
Combine Effect of Vitamin C and Cadmium on the Aminoacid Content of Citrobacter Freundii
Authors: IBRAHİM Muhammad Salihu , ÇAKMAK Meltem , ÖZER Dursun , KARATAŞ Fikret , SAYDAM Sinan
Published: December 2021

Bu çalışmada, Citrobacter freundii farklı konsantrasyonlarda kadmiyum içeren LB besi yerinde üretildi. Daha sonra kadmiyum içeren besi yerine değişik konsantrasyonlarda C vitamini katılarak, her iki durumda da üretilen bakterilerdeki aminoasit miktarları HPLC ile belirlendi. Kontrol ile 75, 100 ve 125 ppm Cd içeren gruplar karşılaştırıldığında alanin, arginin, asparajin, aspartik asit, sistein, glisin, histidin, isoleusin, leusin, lisin, fenilalanin, prolin, treonin, tirozin ve valin aminoasitlerinin miktarlarında artış (p
A Redescription of Curteria curticristata (Willmann, 1951) (Acari: Erythraeidae)
Authors: KARAKURT İbrahim
Published: December 2021

Curteria curticristata (Willmann, 1951) türü, tek bir deutonymph örneğine dayandırılarak, yeniden tanımlandı.Türe ait yeni morfometrik bilgiler verildi. C. curticristata türü, Türkiye akar faunası için ilk kez kaydedildi.
Serological co-infection of dengue and COVID-19: case series in Bangladesh
Authors: Zahan Tahmina , Nasir Morshed , Akhtar Afzal , Rahman A. F. M. Mohibur , Nahin Tanha E.
Published: December 2021

Parallel symptoms and laboratory findings between dengue and coronavirus disease 2019 (COVID-19) pretense a diagnostic contest in some dengue-endemic countries in Asia. In this study, we described ten cases of suspected COVID-19-dengue co-infection in a tertiary care hospital in Bangladesh. Serological data showed that patients with positive results for dengue virus (DENV) NS1 antigen and anti-dengue IgG and IgM were also reactive to COVID-19 rapid antibody tests, suggesting dengue with COVID-19 coinfection. The present study indicated a public health concern regarding COVID-19 and dengue detection in Bangladesh as well as in other dengue-endemic countries and it was important for these nations to manage both pathogens concurrently.
Etiology and risk factors of early and late onset neonatal sepsis
Authors: Althagafi Tariq Homoud , Alharbi Mona Abdullah , Bamarhool Ashjan Nasser , Almajed Zahra Dheya , Natto Leen Hani , Aljohani Ibtihal Khalid , Albeladi Sajedh Abdulqader , Belal Amjad Talal , Albanna Isa Yusuf , Alshammari Khalid Hammad , Baz Albatool Mohammad , Ismail Hisham Ibrahim
Published: December 2021

Neonatal sepsis is a systemic disease caused by bacterial organisms, viral infections, or fungus that causes hemodynamic abnormalities and other clinical symptoms resulting in severe complications and may progress into mortality. Parturition can be used to diagnose organisms caused by the premature onset of sepsis in some cases, but only after an average of three days of life. Clinical manifestations of infection may also diagnose the organisms caused by the early onset of sepsis. Late sepsis can refer to any incident of sepsis from delivery to discharge in high-risk newborns, and the majority of them have been hospitalized for a lengthy period. Late-onset Guillain-Barré syndrome infections generally refer to the infections that occur between one week and up to three months post-labor. The precise load fraction for newborn sepsis varies by context, with differing load estimations between nations with varying lead levels. With the diversity of treatments utilized, explaining the degree of obstetric palsy is crucial and complicated. When comparing birthing sepsis rates, it is critical to understand if a tiny figure represents a total birth rate or another rate, such as a hospital admission number. As stated, it is critical to evaluate if population estimates based on the numbers of neonatal sepsis episodes have been recorded. This article aims to review the literature regarding neonatal sepsis from different aspects including, the etiology, risk factors, and different types and onset of neonatal sepsis.
Una fotografía sobre la calidad de los centros de atención infantil y el estado del desarrollo infantil en México en niñas y niños menores de tres años: metodología y resultados
Authors: Rubio-Codina Marta , Parra Julieth , Jensen Daniel , Aguilar A na Mylena
Published: December 2021

Entre 2018 y 2020, en México, se desarrolló un estudio pionero para el diagnóstico de la calidad de los centros de atención infantil públicos que prestan el servicio a niñas y niños menores de 3 años en el país. El diagnóstico, representativo a nivel nacional y de los principales modelos de atención, recogió información de 245 centros, 426 aulas y 2.115 niñas y niños usuarios y sus hogares, con el objetivo de generar evidencia que permitiera identificar intervenciones concretas para promover el desarrollo infantil en los centros. Además de investigar la calidad estructural, el estudio se centró en la calidad de las interacciones, medida con el CLASS-Toddler (Classroom Assessment Scoring System o Sistema de Calificación para la Evaluación en el Aula). Los resultados muestran que los centros de atención infantil en México cuentan con niveles de calidad estructural altos, con espacios físicos seguros y en buen estado, en los que las niñas y niños tienen acceso a materiales y actividades de juego por lo general adecuados para su edad. En cuanto a la calidad de las interacciones, los resultados muestran niveles en el rango medio-bajo, especialmente en el área de Apoyo Motivador del Aprendizaje, lo que ofrece una ventana de oportunidad única para seguir mejorando la experiencia de las niñas y niños en los centros y promoviendo su desarrollo. Asimismo, existen retos importantes de focalización a poblaciones vulnerables.
Building a More Resilient and Low-Carbon Caribbean - Report 3: Impact of Subsidized Financing to Support Resilient Buildings in the Caribbean
Authors: Bailey Jed , Carvajal Paola , García Fernández Javier , Gischler Christiaan , Henriquez Carlos , Minoja Livia
Published: December 2021

The Caribbean islands are among the 25 most-vulnerable nations in terms of disasters per-capita or land area, and climate change is only expected to intensify these vulnerabilities. The loss caused by climate events drags the ability of the Caribbean countries to invest in infrastructure and social programs, contributing to slower productivity growth, poorer health outcomes, and lower standards of living. Within this context, building resiliency should become a priority for the Caribbean countries. The series “Building a more resilient and low-carbon Caribbean”, focuses on improving the resiliency, sustainability and decarbonization of the construction industry in the Caribbean. The results show that increasing building resiliency is economically viable for the high-risk islands of the Caribbean, generating long term savings and increasing the infrastructure preparedness to the impacts of CC.
Building a More Resilient and Low-Carbon Caribbean - Report 2: Analysis of the Benefits from Resilient Building Materials and Construction Methods in the Caribbean
Authors: Bailey Jed , Carvajal Paola , García Fernández Javier , Gischler Christiaan , Henriquez Carlos , Minoja Livia
Published: December 2021

The Caribbean islands are among the 25 most-vulnerable nations in terms of disasters per-capita or land area, and climate change is only expected to intensify these vulnerabilities. The loss caused by climate events drags the ability of the Caribbean countries to invest in infrastructure and social programs, contributing to slower productivity growth, poorer health outcomes, and lower standards of living. Within this context, building resiliency should become a priority for the Caribbean countries. The series “Building a more resilient and low-carbon Caribbean”, focuses on improving the resiliency, sustainability and decarbonization of the construction industry in the Caribbean.
OVE’s Validation Methodology: IDB Group's Evaluation Recommendations Tracking System (ReTS)
Authors: Maciel Odette , Arévalo Josette , Anderson Alonso Anais Maria , Infanzón Michelle , Barcellos Andreia , Putic Melanie , Ahumada Alejandro
Published: December 2021

The IDB Group's ReTS is a monitoring system aimed at providing the Boards of Executive Directors of the IDB and IDB Invest with periodic information for decision-making on Bank and IDB Invest actions and progress in implementing the endorsed recommendations issued by OVE. Assessing to what extent recommendations have been addressed is essential for institutional accountability and learning.
Estimaciones de las tendencias comerciales: América Latina y el Caribe - Edición 2022
Authors: Giordano Paolo , Michalczewsky Kathia
Published: December 2021

Esta nota presenta las estimaciones de los flujos comerciales internacionales de América Latina y el Caribe para el año 2021. Las cifras fueron elaboradas por el Sector de Integración y Comercio (INT) del Banco Interamericano de Desarrollo (BID) en colaboración con su Instituto para la Integración de América Latina y el Caribe (INTAL), bajo la supervisión general de Fabrizio Opertti, Gerente del Sector, Pablo García, Jefe de la Unidad de Integración Regional, y Ana Basco, Directora del INTAL. La supervisión técnica estuvo a cargo de Mauricio Mesquita Moreira, Asesor Económico del Sector.
Análisis y evaluación de la eficiencia coseno de un colector cilindro parabólico polar: Aplicación en una región subtropical de Argentina
Authors: Panaroni Dario , Castro Luna Ana , Martorelli Luis
Published: December 2021

Se reporta la influencia del ángulo de incidencia de un sistema de concentración solar que se aplicará a la generación directa de vapor. Dicho sistema consta de un colector cilindro parabólico y un receptor a través del cual fluye el agua como fluido de trabajo. El colector se encuentra inclinado según la coordenada de latitud, curvado parabólicamente y con seguimiento en un eje. El colector se analiza matemáticamente utilizando los datos de un año solar típico y se compara con un colector sin inclinación. Hay una mejora significativa en la eficiencia óptica coseno durante todo el año en el colector cilindro parabólico polar, especialmente en la temporada de invierno. Este colector también se analiza empleando herramientas informáticas basadas en la metodología Tonatiuh Ray-Tracing, y se calculan las dimensiones óptimas del receptor. El colector cilindro parabólico polar es un colector prometedor para sistemas de energía solar concentrada en latitudes subtropicales, ya que proporciona un mejor aprovechamiento del recurso solar para los procesos involucrados en la obtención de calor o generación de electricidad, especialmente en aplicaciones de mediana y baja escala.
First record of partial erythrism in a species of poison-dart frog of the family Dendrobatidae: Mindo Poison Frog Epipedobates darwinwallacei Cisneros-Heredia and Yánez-Muñoz, 2010
Authors: Peñaherrera-R. Pedro , Pinos-Sánchez Andrés
Published: December 2021

We report the first recorded case of partial erythrism in a frog belonging to the family Dendrobatidae, Mindo Poison Frog Epipedobates darwinwallacei Cisneros-Heredia and Yánez-Muñoz, 2010. In February 2019, we found an individual in the valley of Mindo, province of Pichincha, Ecuador showing dorsal surfaces uniformly orange, throat and posterior surfaces of legs black, and ventral surfaces yellow. Despite the atypic colouration, its general morphology coincides with E. darwinwallacei, and individuals with typical colouration for the species were abundant syntopically. We include photographs comparing the erythristic individual and a typical colouration frog from the same area. We provide a brief review of chromatic atypic colourations reported in Dendrobatoidea.
Evaluación de marcadores microsatélites (SSRs) heterólogos en Rubus niveus para estudios de diversidad genética en las Islas Galápagos
Authors: Alarcón Bolaños Pablo
Published: December 2021

Rubus niveus o mora es una especie originaria de Asia. Esta planta se ha dispersado por varios continentes por sus usos antropogénicos y sus características biológicas. La alta adaptabilidad que presenta le ha permitido establecerse en nuevos ambientes y volverse invasora, como es el caso de las Islas Galápagos, Ecuador. Desde su llegada a estas islas, la mora ha ido desplazando plantas nativas, y hasta el momento ninguno de los métodos de control utilizados ha resultado efectivo. Estudiar la diversidad genética de esta planta usando marcadores moleculares podría servir para explicar el éxito de su invasión y para desarrollar medidas de control efectivas. Por lo expuesto, en el presente estudio se evaluó la viabilidad de marcadores microsatélites heterólogos para el análisis de la diversidad genética de esta especie en las Islas Galápagos. Para ello se colectaron y analizaron 68 muestras de diferentes localidades de las islas Santa Cruz, San Cristóbal, Isabela y Floreana, y 10 muestras del Ecuador continental. Se escogieron 15 marcadores microsatélites y todos amplificaron exitosamente, demostrando transferibilidad de una especie a otra. Los 15 loci resultaron monomórficos para las muestras amplificadas de las Islas Galápagos y Ecuador continental. Estos resultados no permitieron determinar la diversidad genética de la mora en las muestras estudiadas. Nuestro estudio con microsatélites y otros similares en especies del género Rubus, encontraron loci monomórficos. Por lo tanto, sugerimos llevar a cabo el secuenciamiento del genoma de la mora y así utilizar otros marcadores moleculares como los polimorfismos de un solo nucleótido para dilucidar el nivel de diversidad de esta especie.
Fast Pyrolysis Biochar Flammability behavior for Handling and Storage
Authors: Del Campo Bernardo , Brumm Thomas , Keren Nir
Published: December 2021

Biochar is a fairly new material in the research arena with limited information on safety aspects related to transportation, storage, disposal or field application methods. The objective of this research was to assess the flammability characteristics of fast pyrolysis biochars with test methods EPA 1030 and ASTM 4982. Results indicated that biochar is a non-flammable substance when tested with EPA 1030 ignitability of solids. However, when tested with ASTM D4982, a fast screening method, biochars showed potential risks of flammability. However, the addition of 20-50% moisture reduced any flammability concern.

Fast pyrolysis biochar was more prone to be flammable than traditional charcoal and slow pyrolysis biochar tested in this study. Still, fast pyrolysis biochars presented lower flammability potential (ASTM 4982) in comparison to its precursor biomass. The flammability propagation measured with EPA 1030, had high correlations with oxygen content and surface area of the fast pyrolysis biochar. The combustion reaction of fast pyrolysis biochar is a flameless combustion process, with a slow burning rate, and most commonly exhibiting a hot ember smoldering propagation front.

This paper illustrates the necessity of performing recurring tests due to biochar’s intrinsic variability stemming from the different modes of production and feedstock used.
Primeras experiencias para construir la Red Colombiana de Computación Avanzada: LaRedCCA
Authors: Torres Niño Luis Alejandro
Published: December 2021

La Red Colombiana de Computación Avanzada (LaRedCCA) fue establecida para fortalecer la comunidad de supercómputo y unir conocimientos, recursos e infraestructura distribuida geográficamente en Colombia mediante la red académica. Igualmente busca integrar los centros de recursos de computación de alto rendimiento para soportar iniciativas científicas y académicas de interés nacional y sin ánimo de lucro. Ha sido conformada inicialmente por el SC3UIS (Supercomputación y Cálculo Científico) de la Universidad Industrial de Santander, la Universidad de los Andes y la Red Nacional Académica de Tecnología Avanzada (RENATA). LaRedCCA ha establecido un banco de prueba inicial para compartir recursos informáticos a través de un enlace de alta velocidad proporcionado por RENATA y busca apoyar la investigación en todas las áreas del ecosistema científico y tecnológico del país, impulsando áreas como la computación paralela y distribuida, la inteligencia artificial y el Big Data. Este enlace ha mostrado resultados interesantes al proporcionar un canal HPC dedicado que proporciona un alto ancho de banda para la transferencia de datos para análisis posteriores o simulaciones realizadas por los centros de investigación de la Universidad de los Andes en y en los recursos de computación de alto rendimiento de SC3UIS, principalmente en la plataforma GUANE-1.
Immigrant Gnosis: Making Work in the United States
Authors: Alvarez Andrea
Published: December 2021

This essay proposes a reflection on the curatorial work I did for the exhibition Comunidades Visibles: The Materiality of Migration, exhibited between February and May 2021, at the Albright-Knox Art Gallery, in Buffalo, New York. The exhibition brought together artworks by first- or second-generation immigrant Latinx artists. Each combines materials and techniques from their country of origin, from other colonized places, or from their present context with everyday or art historical references.
Bajo la constelación del ñandú. Diálogo entre el Colectivo Río Paraná y Diego Falconí Trávez
Authors: Falconí Trávez Diego
Published: December 2021

Diálogo entre el Colectivo Río Paraná y Diego Falconí Trávez con motivo de la exposición La pisada del ñandú (o cómo transformamos los silencios) en Barcelona, España. Las reflexiones, desde perspectivas críticas y encarnadas, abordan los vínculos entre anti-colonialidad y disidencia sexual en los campos del arte, el activismo y la práctica museográfica para entender espacios de opresión y resistencia que los cuerpos travestis, trans y no binarios del Sur ocupan más allá de lógicas asimilacionistas.
Semblanza absolutamente exacta: mapas y medios en Borges y Royce
Authors: Peters John , Burgos Hugo
Published: December 2021

Josiah Royce, the American idealist philosopher (1855-1916), is best known to readers of Borges in connection with a recursive map-within-a-map drawn upon the soil of England. Indeed, Borges ranks ​​"el mapa de Royce" side-by-side with his beloved Zeno´´´ s  paradox in “Otro poema de los dones” (336), a Whitmanesque catalog of a few of his favorite things. Borges appreciated Royce as a fellow-wanderer through the late nineteenth-century thickets of both Anglo-American idealism and the new mathematics of transfinite numbers. Royce was not so much an influence on Borges as a fellow traveler who had arrived in a somewhat similar place after passing through Berkeley, Schopenhauer, and Cantor.

After cataloging connections between the two thinkers and explicating Royce's map, I will suggest that both figures are theorists of infinity and metaphysicians of the copy who offer fertile suggestions to our understanding of media in general and maps in particular. Though Royce and Borges both can strike some readers as architects of suffocating idealistic structures, there is a difference. Royce thinks his figures of infinity really do disclose the truth about the universe. Borges sees in such figures the paradoxes and slippages involved in any project of perfect duplication, and his skepticism about philosophical representation is designed, ultimately, to provide oxygen and exit from totalitarian systems. In this I would view Borges as a follower of Royce's close friend, Harvard colleague and philosophical antagonist: William James.
Framework and Key Success Factors of Governance and Sustainability of Very Small Municipal Solid Waste Power Plants
Authors: Missita Suwannee , Phoochinda Wisakha , Poboon Chamlong
Published: December 2021

Inordinate municipal solid waste issues and ever increasing demand for electricity, the Thai government formulated the Power Development Plan focusing on supporting the use of renewable energy to generate electricity and using measures to promote the purchase of electricity from very small power producers. This support indubitably leads to the question as to whether Very Small Municipal Solid Waste Power Plants (VSMSWPPs) are sustainable or not. Thus, this study aims to develop a framework and key success factors for evaluating governance and sustainability of VSMSWPPs in Thailand. It consists of documentary research and interviews with professionals, policy makers, practitioners and power plant owners conducted to develop the framework and determine the key success factors. Subsequently, the framework and factors were assessed by 12 experts. The good governance and sustainability concepts were selected as a framework and used to construct key success factors to evaluate the performance of VSMSWPPs. The framework contains four dimensions and each dimension had key success factors as follows: (1) Governance dimension with 7 key success factors; (2) Economic dimension with 8 key success factors; (3) Social dimension with 5 key success factors; and (4) Environmental dimension with 7 key success factors: at total of 27 key success factors.
Fiscal Decentralization and Environmental Pollution Control
Authors: Omodero Cordelia Onyinyechi
Published: December 2021

Fiscal decentralization is one of the strategies applied to involve both the national and local governments in environmental management. Although, this study tries to examine its effectiveness in Nigeria which has been ambiguous. Using a multiple regression method, the study examines the effect of revenue fiscal structure on CO2 emission management in Nigeria from 2007 to 2020. Controlling pollution through the fiscal system is exceedingly difficult. According to the t-statistic results, it is only the central government that has a significant favorable influence on pollution management. State and local governments have a minimal impact on CO2 emissions reduction. This outcome leads to a suggestion that resource accumulation powers should be equitable with a higher consideration to the state and local governments which have a greater burden of controlling pollution in the rural areas where majority of the citizens have their abodes. The government at all levels should guarantee that the country's environmental policies and regulations are effectively implemented in order to reduce carbon emissions and other types of environmental pollution.
Seasonal Occurrence and Reproductive Suitability of Weed Hosts for Sweetpotato Whitefly, Bemisia tabaci (Hemiptera: Aleyrodidae), in South Georgia
Authors: Barman Apurba K. , Roberts Phillip M. , Prostko Eric P. , Toews Michael D.
Published: December 2021

South Georgia represents an area of intensive agricultural production where cultivated crops serve as hosts of the sweetpotato whitefly, Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae), throughout the year. In addition to cultivated hosts, there are numerous weed species present in the agricultural landscape that are undoubtedly responsible for supporting B. tabaci population development. This study provided information on the most abundant weed hosts of B. tabaci from this region. We evaluated 31 different weed species, of which 16 weed species are reproductive hosts with varying degrees of preference. Suitable weed hosts included cypressvine morningglory (Ipomoea quamoclit L.), nodding spurge (Euphorbia nutans Lag.), prickly sida (Sida spinosa L.), sharppod morningglory (Ipomoea cordatotriloba Dennst.), smallflower morningglory (Jacquemontia tamnifolia L.), tall vervain (Verbena bonariensis L.), and wild poinsettia (Euphorbia heterophylla L.). These species are highly abundant and therefore likely influence B. tabaci populations in the landscape. Other species including bristly starbur (Acanthospermum hispidum DC) and redweed (Melochia corchorifolia L.) were highly preferred by B. tabaci but not nearly as abundant in the landscape. Furthermore, we identified 10 very common weed species that were poor reproductive hosts including wild radish (Raphanus raphanistrum L.), Palmer amaranth (Amaranthus palmeri S. Watson), common ragweed (Ambrosia artemisiifolia L.), Florida pusley (Richardia scabra L.), and henbit (Lamium amplexicaule L.).
The Inhibitory Effect of Powdery Mildew-Induced Volatiles from Rose on Host Selection Behavior of Beet Armyworm Moths (Lepidoptera: Noctuidae)
Authors: Cheng Jing , Yin Lihong , Zhou Shiping , Tang Min , Li Yunxian , Yang Fazhong
Published: December 2021

Plant-mediated indirect interactions (PMIIs) between phytopathogenic fungi and herbivorous insects on shared host plants occur in nature. Knowledge of PMIIs is critical in plant molecular breeding and integrated pest management. We studied the response and chemical mechanism of beet armyworm, Spodoptera exigua (Hübner), adults to rose plants, Rosa chinensis Jacquin, infected with rose powdery mildew, Podosphaera pannosa (Wallr.: Fr.) de Bary. Using gas chromatography-electroantennographic detection (GC-EAD) coupled with electroantennogram (EAG), we found that beet armyworm antennae responded to 8, 11, and 3 volatile organic compounds (VOCs) from noninfected roses, mildew-infected roses, and mildew alone, respectively. The EAG analyses showed 11 chemicals (e.g., limonene [1], 2-ethyl-1-hexanol [2], linalool [3], nonanal [4], (E)-β-caryophyllene [5], 1-dodecanol [7], nhexadecane [9], 1-hexadecanol [11], methyl palmitate [12], 1-octadecanol [14], and n-butyl hexadecanoate [15]) elicited electrophysiological responses of beet armyworm antennae with significant dose-response relationships (P < 0.05). The EAG responses to the three chemicals (3, 11, and 15) were greater than that to the reference chemical [i.e., (E)-2-hexenal] at 0.5, 5.0, and 50.0 mg/ml. Olfactory and ovipositional behavior assays indicated that three chemicals (2, 3, and 5) significantly attracted beet armyworm females and four chemicals (7, 11, 14, and 15) strongly repelled females. Chemicals 2, 3, and 5 from healthy roses appear to be responsible for the attraction of beet armyworm moths to healthy roses, whereas chemicals 7, 11, 14, and 15 from mildew-infected roses play key roles in inhibiting attraction of moths. VOCs from mildew alone did not attract or repel beet armyworm moths.
An Investigation on the Learners' Perceptions and Experiences in Engaging with Online Writing Lessons Conducted via Google Classroom
Authors: Shelvam Hemamalini , Jayarajah Kamalavasini , Kandasamy Shamalaa , Xiao Song , Durairaj Yasodha , Singh Charanjit Kaur Swaran , Maniam Mahendran
Published: December 2021

This study aims to examine the learners’ perception and experiences in engaging in writing lesson conducted via Google Classroom among the secondary school learners in Malaysia and China. This study is important for both the teachers and stakeholders to identify the suitable types of writing activities that can be used in a Google classroom platform to motivate the learners to be interested in writing and the ways to solve the problems faced by the learners when it involves writing lesson via e learning. This study focuses on five learners; three learners from Malaysia and two learners from China. This study employed a qualitative approach. The instruments were interview questions and guided logbook journals. The sessions were conducted via Google Meet and the recorded interviews were then transcribed. Hence, researchers used qualitative method to analyse the codes and categories to pen down the findings. As a result, both China and Malaysia learners expressed their affirmative agreement towards their participation in writing classes conducted using Google classroom. Moreover, based on the log book entries, it was discovered that the features embedded in Google classroom platform plays an important role in the teaching and learning process, mainly in submissions and feedbacks. Finally, the learners agree that Google classroom has improved their writing ability to a certain extend. Although the learner faced some hiccups in utilizing this method of e-learning but all participants were affirmative that Google Classroom has instilled confidence and stimulated their motivation to write better essays.
Maize Output Supply Response to Climatic and other Input Variables in Ethiopia
Authors: Tirfi Abera Gayesa , Oyekale Abayomi Samuel
Published: December 2021

Climate change is among the major challenges to sustainable agricultural production in Ethiopia. Production of cereal crops, especially maize, is very responsive to changes in rainfall and temperature, as climatic parameters influencing productivity. This paper analyzes how climatic and other variables affect the supply of maize in Ethiopia. The data were obtained from secondary sources and cover the period 1981–2018. Data were analyzed using the Autoregressive Distributed Lag (ARDL) approach. The Akaike Information Criterion (AIC), Schwarz Information Criterion (SIC), and Hannan-Quinn Information Criterion (HQ) were used to select the optimum number of lags. In order to detect whether unit root is present in the series, Augmented Dickey-Fuller (ADF) and Philips-Perron (PP) tests were carried out. The presence of long-run equilibrium was found between maize output and temperature, rainfall, and other included variables. The results show that, in both the long and shortrun, all included climatic variables had a negative relationship with maize output supply, although temperature showed statistical insignificance (P>0.10). The result showed that maize crops are highly sensitive to extremes of rainfall – both shortage in the initial growing period and excessin the vegetative and fruiting stages. It was concluded that farmers face climate-related risk due to variations, particularly in rainfall. Therefore, farmers should adapt by using short-duration and climate-tolerant varieties of maize, along with engagement with eco-friendly production systems.