bluuebunny/crossref_metadata_2025 huggingface dataset:
THE LEGALITY OF EX-ISIS CITIZENSHIP FROM INDONESIA IN IRAQ AND SYRIA
Authors: Hananto Pulung Widhi Hari
Published: May 2021

After the death of the supreme commander of the Islamic State of Iraq and Syria (ISIS), Abu Bakar Al Baghdadi, marked the end of ISIS's legitimacy and hegemony in the Arabian Peninsula. The incident actually led to a new polemic related to the fate of combatants or sympathizers whose support the ISIS (Foreign Terrorist Fighter). With the defeat of ISIS, many FTF are trapped unable to return to their home/ origin countries. On the other side, the sentiment of the country of origin has arisen to not accept its citizens back and lead to revocation of citizenship status. As one of the donor countries for ISIS member, the Government of Indonesia is faced with serious problems regarding the legality of citizenship status and the threat of radical ideology. The dilemmatic attitude to revoke Indonesian citizenship or to repatriate the Ex-ISIS becomes a matter of climax. The issue of this article to centralize and highlight the legality toward the ex-ISIS citizenship from Indonesia in Iraq and Syria. In addition, this article also to give the perspective and elaboration in matter of consequences to repatriate those former ISIS or to withdraw their citizenship.  The results of the study of this article are criticized and also analyze the legality of citizenship of ex ISIS member from Indonesia.
Validasi Metode Analisis Penentuan Kadar Logam Berat Pb, Cd dan Cr Terlarut dalam Limbah Cair Industri Tekstil dengan Metode Inductively Coupled Plasma Optical Emission Spectrometry Prodigy7
Authors: Susanto Arif , Mulyani Tri , Nugraha Sandi
Published: May 2021

Konsep pembangunan secara berkelanjutan diperlukan seiring dengan perkembangan industri. Aktivitas industri menghasilkan limbah buangan yang harus diolah sebagai salah satu konsep penerapan pembangunan berkelanjutan. Kehadiran logam berat dalam limbah cair industri yang melebihi baku mutu air buangan dapat mencemari lingkungan dan berbahaya bagi mahluk hidup. Keberadaan logam berat seperti timah hitam (Pb), cadmium (Cd) dan kromium (Cr) berbahaya bagi lingkungan di perairan karena toksisitas yang cukup tinggi dan non-biodegradable. Metode pengujian penentuan konsentrasi logam berat Pb, Cd dan Cr dalam limbah cair industri tekstil diperlukan untuk mendapatkan metode yang valid. Penelitian validasi metode dalam penelitian ini yaitu menggunakan proses pengujian melalui tahap preparasi dekstruksi basah, kemudian diuji dengan Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) Prodigy 7. Metode ini bertujuan untuk mendapatkan 3 (tiga) kadar logam berat dalam satu waktu yang dibandingkan terhadap standar terukur. Validasi metode yang dilakukan untuk penentuan kadar logam tersebut telah memenuhi persyaratan validasi, dimana persentase Recovery sampel harus berada pada rentang 98-102% dengan nilai RSD <2%. Pada pengujian akurasi, presisi dan nilai regresi linear koefisien korelasi (R) >0,997 dan koefisien determinasi (R2) >0,995. Metode yang telah valid tersebut digunakan untuk pengujian terhadap salah satu sampel cair limbah industri yang bergerak di bidang tekstil yang berada di Kota Bandung. Hasil kandungan kadar Cd pada inlet 0,0010± 0,0002 mg/L dan kandungan kadar Cd outlet 0,0006± 0,0001 mg/L, kandungan kadar Cr inlet 0,0035± 0,0009 mg/L dan kandungan kadar Cr outlet 0,0000± 0,0000 mg/L, serta kandungan kadar Pb inlet 0,0565± 0,0157 mg/L dan kandungan kadar Pb outlet 0,0161± 0,0045 mg/L.
Typy a způsoby užívání výukových zdrojů žáky osmých tříd základních škol
Authors: Bednárek Aleš , Mynářová Gabriela , Václavík Marek , Červenková Iva
Published: May 2021

Článek prezentuje výsledky empirického výzkumu zaměřeného na užívání výukových zdrojů žáky 2. stupně základních škol ve vyučovacích hodinách a při domácí přípravě. Příspěvek si klade za cíl popsat výukové zdroje, se kterými žáci pracují a představit způsoby užívání těchto výukových zdrojů. Dále vyhodnotit tendence v oblasti jejich užívání s ohledem na pronikání digitálních technologií do mnoha oblastí žákova učení. Výzkum je metodologicky založen na kvalitativním designu. Byly provedeny hloubkové rozhovory s dvaceti respondenty osmých tříd základních škol. Data byla následně kódována, analyzována a interpretována směrem k cílům a výzkumným otázkám.
Empirický výzkum ukázal, že žáci pracují s rozmanitými výukovými zdroji. Ve školním učení žáka klíčovou roli stále hraje tištěná učebnice a se zdroji pracují žáci samostatně. V domácí přípravě žáka pak zápisky v sešitu a internet. Digitální zdroje jsou běžnou součástí žákova učení ve škole i v domácí přípravě, nikoliv však převažující. Existuje odlišnost ve způsobech užívání zdrojů ve škole a v domácí přípravě.  
Výsledky výzkumu potvrzují tendence v oblasti užívání výukových zdrojů na 2. stupni základních škol. Charakterizuje je různorodost. Ve škole jsou digitální zdroje používány jako doplněk ke zdrojům tištěným. V domácí přípravě žáka hrají zásadní roli zdroje psané.
Modeling the Dynamics of The Second Wave of Corona Virus (COVID-19) Pandemic in Nigeria
Authors: Wusu Ashiribo Senapon , Olabanjo Olusola , Akanbi Moses , Aribisala Benjamin
Published: May 2021

The resurgence of the dreaded coronavirus (COVID-19) pandemic is rapidly taking its toll across the globe. Like other nations of the world, the need to flatten the curves is now the top priority of both governmental and non-governmental organisations in Nigeria. Understanding the dynamics of the disease is crucial in making suitable preventive policies that will slow the spread and ultimately flatten the curves. In this work, a compartmental--based model for analysing the dynamics of the pandemic second wave in Nigeria is presented. The model is fitted to the available data accessible on the Wolfram Data Repository and the parameter values estimated with the use of Quasi--Newton algorithm. Efficiency of the current control policies is measured and projections of the dynamics of the disease in coming days are made. Recommendations on how to manage the resurgence of the disease are also suggested.
The spectrum of multisystem inflammatory syndrome (MIS-C) in children infected with severe acute respiratory syndrome coronavirus 2
Authors: Amer Ahmad , Ovadia Adi , Meirson Gila , Tasher Diana , Dalal Ilan
Published: May 2021

Introduction: The impact of SARS-CoV-2 infections in children has generally been described as relatively benign. However, since April 2020, there have been reports of a new multisystem inflammatory illness affecting children and related to COVID-19 termed multisystem inflammatory syndrome in children (MIS-C).

Aim: To describe 3 cases of children diagnosed with MIS-C and discuss the disease spectrum.

Methods: We collected and reviewed data from 3 cases diagnosed with MIS-C admitted to our pediatric ward between October 2020 and January 2021.

Discussion: MIS-C is a newly described disease that spans a spectrum of phenotypes and severity, and while it shares clinical similarities with Kawasaki disease, it has a unique set of epidemiological, laboratory, and prognostic characteristics. In this review, we hope to add to the understanding of this new entity.

Statement of Novelty: This report discusses 3 cases of MIS-C and elaborates on the spectrum and immunology of this entity. Our cases are unique in their relatively wide spectrum and variability. We hope our own experience with MIS-C adds to the accumulating knowledge and understanding of this emerging disease.
Investigation on the tool worn surface morphology and machining characteristics of the Hardox steel using minimum quantity lubrication
Authors: Mamundi Azaath L. , Natarajan U.
Published: May 2021

In recent years, minimum quantity lubrication machining has played a critical role in extending tool life, improving surface finish, and reducing tool wear during the machining of hardened steel. The reported investigation involved the utility of Hardox 500 steel for the machining process while the cubic boron nitride coated tool performed the function of removing the material. The investigation was carried out by adopting two different techniques to predict the responses, viz., the response surface methodology and the artificial neural network. These techniques have been employed to predict the possible responses in investigating machining characteristics. Also, due consideration has been made concerning the reduction of tool-tip temperature and surface roughness. The entire investigation was carried out using three different environments. They are dry machining, wet, and minimum quantity lubrication. A scanning electron microscope was used for examining the morphology of the worn tool surface.
Synthesis of Al/Cu core–shell particles through optimization of galvanic replacement method in alkaline solution
Authors: Ali Rashid , Ali Fahad , Zahoor Aqib , Nawaz Shahid Rub , ul HaqTariq Naeem , Ullah Saad , Mahmood Arshad , Shah Attaullah , Bin Awais Hasan
Published: May 2021

In this work, Al/Cu core–shell particles were successfully synthesized through an optimized galvanic replacement method. For this purpose, a uniform and dense copper layer was deposited on aluminum particles in an alkaline solution. The effects of four deposition factors, i. e. (i) molar ratio EDTA-2Na/CuSO4· 5H2O, (ii) molar ratio CuCl2/Al powder, (iii)pHand (iv) temperature were systematically studied and optimized using the Taguchi orthogonal (L9) method. It was observed that molar ratio EDTA-2Na/CuSO4· 5H2O and temperature are the most affecting factors in the deposition process. By increasing their levels, copper deposition increases within a specified time. The X-ray diffraction and scanning electron microscopy/ energy-dispersive X-ray spectroscopy results revealed the formation of homogeneous nanostructured Cu shells around Al particles. The results revealed that to achieve maximum copper deposition on Al powder; molar ratio EDTA-2Na. 2H2O/CuSO4. 5H2O, molar ratio CuCl2/Al powder,pHand temperature of the deposition bath should be 2.0, 0.05, 8.8 and 55 °C, respectively.
Crystal structure of bis(amino(thioureido)methaniminium) terephthalate, C12H18N8O4S2
Authors: Hou Yimin , Zhang Zhongyun , Zhu Xin
Published: May 2021

C12H18N8O4S2, monoclinic, P21/c (no. 14), a = 13.378(4) Å, b = 5.0129(14) Å, c = 13.396(4) Å, β = 96.118(4)°, V = 893.3(4) Å3, Z = 2, R

gt
(F) = 0.0561, wR

ref
(F
2) = 0.1201, T = 298 K.
Crystal structure of 2-methoxyphenyl 2-(6-methoxynaphthalen-2-yl)propanoate, C21H20O4
Authors: Sun Wei , Shi Zhe , Wang Yan , Zhou Xiao-ping , Liang Di
Published: May 2021

C21H20O4, monoclinic, P21 (no. 4), a = 5.7726(10) Å, b = 12.662(2) Å, c = 12.068(3) Å, β = 92.377(11)°, V = 881.3(3) Å3, Z = 2, R

gt
(F) = 0.0342, wR

ref
(F
2) = 0.0887, T = 296(2) K.
Crystal structure of (E)-3-(dimethylamino)-1-(thiophen-3-yl)prop-2-en-1-one, C9H11NOS
Authors: Yoo Miri , Koh Dongsoo
Published: May 2021

C9H11NOS, monoclinic, P21/n (no. 14), a = 6.0194(4) Å, b = 20.9249(13) Å, c = 7.7103(5) Å, β = 107.783(2)°, V = 924.75(10) Å3, Z = 4, R

gt
(F) = 0.0373, wR

ref
(F
2) = 0.1061, T = 223(2) K.
Structural Performance of CNT-Reinforced Cementitious Materials Considering the Effect of Chirality of Nanotubes
Authors: Mohajeri Nav Foad , Fakharpour Mahsa , Arashti Maryam Gholizadeh
Published: May 2021

The chirality of carbon nanotubes (CNTs) directly affects their mechanical properties, i.e., compressive and tensile strength, and hence, engineering behavior of the modified composites is dependent on these chirality-controlled characteristics. Despite extensive evaluations, the chirality of CNTs and the corresponding effects on cement-based materials have not been well addressed. Thus, in the present study, multiwall CNTs, including armchair, chiral, and zigzag CNTs, with different chiralities were incorporated separately into cement pastes to investigate the engineering behavior of the resulting composites. Compressive and flexural strength was evaluated; also, a scanning electron microscope (SEM) was applied to analyze the dispersion of the nanotubes, porosity of the paste, and effects of CNTs on the micro-crack progression. In addition, the effects of nanotubes physical characteristics were evaluated based on a comprehensive comparative study; also, the corresponding influence in conjunction with the CNT content was probed. The results revealed that while armchair-modified composites led to undesirable strength development, specimens modified by chiral CNTs demonstrated great structural enhancement. According to the SEM images, the reduction of cracks, bridging effects of the nanotubes, and higher hydration rates were observed. The results of the present study could be utilized for developing CNT-modified composites with optimized engineering behavior.
A Dance from Iglau: Gustav Mahler, Bohemia, and the Complexities of Austrian Identity
Authors: Batstone Leah
Published: May 2021

A survey of Mahler’s correspondents, especially his classmates at the University of Vienna in the 1870s, reveals a multifaceted identity he shared with them. Most of his fellow members of the Pernerstorfer Circle, young intellectuals who met to discuss art and politics during their university years, had a similar background: German-speakers with a Jewish heritage and an upbringing in one of the Eastern minority communities of the Habsburg Empire. While some of Mahler’s music has been examined with respect to his Jewish background, little has been said about the influence of Bohemia on the composer, and even less about how this Austrian configuration of identity influenced his worldview and composition. We often repeat Mahler’s famous quote that he was thrice homeless, as a Bohemian in Austria, as an Austrian among Germans, and as a Jew throughout the world, yet the meaning of being Austrian rather than German has been underexplored in Mahler’s music. In this article, I suggest that the mixture of ethnic identities was Austrian for the composer, placing Mahler within a group of like-minded Austrians whose complex allegiances to multiple traditions influenced their contributions to the field of politics, literature, philosophy, and music. Focusing on Mahler’s early symphonies, I demonstrate the interface between Jewish, Bohemian, and Austro-German musical characteristics, and I compare this musical synergy to similar interactions in the publications of members of the Mahler’s university peers, as well as other intellectuals of his generation including Karl Emil Franzos. This article reveals multiethnic networks of influence in Mahler’s music and reconsiders Austrian identity uncoupled from the traditional Austro-German formulation.
Las consecuencias éticas del pensamiento débil
Authors: Minaya Edickson
Published: May 2021

El presente trabajo, da cuenta de una Ética de la debilidad en el pensamiento hermenéutico del filósofo italiano Gianni Vattimo (1936). El artículo destaca que, en su propuesta, denominada “pensamiento débil”, se dan las bases para una defensa, respeto y reconocimiento de las diferencias culturales en el contexto de la postmodernidad y que termina implicando a las minorías. Argumentos que observamos en distintos momentos de su producción textual, acentuando el paso de lo ontológico a lo ético. Intentamos responder a tres preguntas fundamentales: 1. ¿En qué consiste la ética debolista que se desprende de la hermenéutica nihilista de Vattimo? 2. ¿Cómo responde esta ética a la condición postmoderna, hoy en su fase multicultural; que construye diferencias, minorías y pluralidades? 3. ¿Cómo puede ser interpretadas las diferencias culturales desde el horizonte hermenéutico en que se inserta Gianni Vattimo?
Effect of modified hydrotalcites on flame retardancy and physical properties of paper
Authors: Wang Songlin , Yang Xuxu , Wang Fei , Song Zongjia , Dong Hehe , Cai Luqing
Published: May 2021

Functionalized layered double hydroxides (LDHs) based on a multi-modifier system composed of itaconic acid (ITA) and titanate coupling agent (NDZ-201) were designed and fabricated in this paper with the aim to develop high-performance fire retardant paper. The structure of LDHs were characterized using Fourier transform infrared spectroscopic analysis, X-ray diffraction analysis, thermogravimetric analysis (TGA), scanning electron microscopic analysis, cone calorimetry, and laser particle size analysis. The results showed that carbonate anions were partially replaced by ITA, whereas the titanate coupling agent was attached to the surfaces of the hydrotalcites. The limiting oxygen index (LOI), TGA curves, total heat release rate (THR), and heat release rate (HRR) indicated that as the addition of hydrotalcites increased, the modified LDHs’ LOI value and thermal stability noticeably increased compared to the unmodified hydrotalcites, and the HRR and THR of the material decreased. When the addition amount was 25%, the LOI of ITA-LDHs was 26.9%. However, the Mg-Al hydrotalcites adversely affected the strength index of flame-retardant paper; the modified hydrotalcites clearly reduced this effect, and the whiteness of paper increased and reached 83%.
Carbon fibers derived from pure alkali lignin fibers through electrospinning with carbonization
Authors: Worarutariyachai Tunnapat , Chuangchote Surawut
Published: May 2021

Alkali lignin (AL) fibers with a smooth surface and fine morphological appearance were successfully produced via electrospinning using a simple heated single spinneret system, instead of typical electrospinning of lignin with added synthetic polymer blends or conventional co-axial electrospinning. To reduce the size of the fibers, glycerol was added to the spinning solution as a co-solvent for surface tension reduction and electrospinnability improvement. After electrospinning, stabilization and carbonization were subsequently performed to convert AL fibers to carbon fibers (CFs). The obtained CFs displayed rough and uneven surfaces. However, the CFs derived from glycerol-added solution showed greater electrical conductivity, specific surface area, and porosity compared with those from pure AL solution. Furthermore, the results indicated that the inorganic salts on the rough surface of CFs were successfully removed by sulfuric acid (H2SO4) washing. After H2SO4 washing, the CFs revealed a smoother surface and higher electrical conductivity, specific surface area, and porosity.
Color variance of dry coconut wood and its relationship with the density
Authors: Srivaro Suthon , Jantawee Sataporn , Tomad Jaipet , Hosakun Worakan , Pásztory Zoltán
Published: May 2021

The color variance of dry coconut wood and its relationship with the wood density was explored. Coconut trunks with two different ages of 30 and 60 years old were selected for the experiment. Wood color was measured by the CIE L*a*b* or CIELAB color system on both the transverse (longitudinal-tangential plane) and cross (tangential-radial plane) sections. The results showed that all color parameters (L*, a*, b*) tended to decrease with increasing wood density for both sections in which the value on transverse section was slightly higher. At a given density, the color value of the older trunk was lower. All color parameters appeared to be related with density in a linear relationship with relatively low R2 for both ages. The best correlation was observed for the b*-density relationship on cross sectional samples for both trunk ages, showing R2 values of 0.53 to 0.60. This implies that it might be possible to use this color parameter as input for the grading of coconut wood’s density.
Perioperative focused cardiac ultrasound: a brief report
Authors: Sheth MD Amish , Trubelja MD FASA Anahita Dabo-
Published: May 2021

Background: The anesthesiologist's emerging role as a perioperative physician has challenged the field to broaden its scope of practice to meet the demands of the patient undergoing surgery today. This brief report aims to identify the indications, clinical impact on management decisions, and perioperative focused cardiac ultrasound accuracy in patients scheduled for non-cardiac surgery. Methods: A review from the Department of Anesthesia Perioperative Echocardiography database on transthoracic echocardiography was performed, including clinical, demographic, indications, therapeutic impact, and accuracy from February 1, 2017 to October 10, 2019. Results: A total of 220 FoCUS exams were identified. FoCUS was performed in 55% males and 45% females. The average age was 66.5 years, and 68% of patients were designated ASA 3 classification. The majority underwent thoracic procedures with a history of cardiovascular disease for hemodynamic instability in the post-anesthesia care unit (PACU). In this group, 94% had a change in management. New findings in 9 patients resulted in pre-induction management change. FoCUS was also performed intraoperatively to differentiated hemodynamic instability, significantly altering care. Postoperatively, new wall motion abnormalities findings hasten care to the cardiology service. Immediate assessment of hemodynamic instability altered care and postoperative recovery location in a significant number of patients. In all cases, FoCUS was used to guide management in the differential diagnosis of the acute event and to assess treatment response. Conclusion: This review demonstrates that FoCUS is an excellent clinical adjunct in the perioperative period. Diagnostic accuracy and efficiency by pattern recognition helped answer clinically significant questions and guide management. The non-invasive approach of POCUS and its rapid adaptation makes it an exciting area of future research.
Delayed-Onset ADA1 (ADA) Deficiency Not Detected by TREC Screen
Authors: Kahwash Basil M. , Yonkof Jennifer R. , Abraham Roshini S. , Mustillo Peter J. , Abu-Arja Rolla , Rangarajan Hemalatha G. , Scherzer Rebecca
Published: May 2021

A 9-month-old boy presented to a community pediatrician with a recent history of failure to thrive. Workup revealed neutropenia and lymphopenia. Subsequent admission for fever and pneumonia revealed an absolute neutrophil count of 860 and absolute lymphocyte count of 214. Lymphopenia affected all lymphocyte subsets and his naïve and memory CD4+ T-cell ratio was inverted for age. Immunoglobulin levels were normal for age, and tetanus and diphtheria antibody titers were protective. The profound lymphopenia raised suspicion for severe combined immunodeficiency (SCID), despite a normal newborn screening by T-cell receptor excision circle analysis. He did not have a previous history of recurrent fevers or infections, had attended day care, and had received all age-appropriate vaccines. He subsequently was diagnosed with Pneumocystis jirovecii pneumonia, adenovirus upper respiratory infection, and rotaviral diarrhea. An enzyme assay revealed absent adenosine deaminase (ADA) activity and elevated erythrocyte deoxyadenosine nucleotides. With genetic sequencing, 2 pathogenic variants in the ADA gene were confirmed. Acute management of ADA-SCID is aimed at restoration of enzyme activity, followed by curative therapy. The patient is currently on immunoglobulin therapy and recombinant ADA (Revcovi), with an excellent immune response, while awaiting sibling hematopoietic cell transplant from a matched sibling. Hypomorphic ADA variants can present with delayed-onset SCID, and some of these patients are missed by SCID newborn screening. A careful review of a complete blood cell count might offer clues and promote confirmatory diagnostic investigation.
Weed interference capacity on soybean yield
Authors: Rüdell Eduardo Carlos , Petrolli Iuri Dalla Santa , Santos Fernando Machado dos , Frandaloso Dieferson , Silva Diécson Ruy Orsolin da
Published: May 2021

Among biological factors, weeds are the most important limiting factor for crop yields, as well as increasing production costs. The aim was to determine the influence of control and coexistence of weed community on soybean crop yield and to define the period before interference, the critical period of interference prevention and the total period of interference prevention, with the comparative use of chemical and mechanical methods for weed eradication. The study was conducted in an experimental field in the 2018/2019 harvest. A randomized block with four replications was implemented as experimental design, using two methods for control. The evaluated periods were 0-10, 0-20, 0-30, 0-40, 0-50, 0-60 and 130 days after crop emergence. It was possible to observe that the use of the chemical method generated a higher yield compared to mechanical method. The period before the interference in both chemical and mechanical management was similar, approaching 20 days after crop emergence. The critical period of interference prevention was between 20-50 and 40.5 days after crop emergence in chemical and mechanical methods, respectively. The total period of interference prevention was extended to 50 and 40.5 days after crop emergence in chemical and mechanical methods, respectively. The reduction in productivity due to weed interference was 1639 kg ha-1 (55%)and 947 kg ha-1 (34.6%) in chemical and mechanical methods, respectively.
Hidrolizados proteicos a partir de subproductos de la industria pesquera: obtención y funcionalidad
Authors: Montero Barrantes Manuel
Published: May 2021

Introducción. Los subproductos de la industria pesquera representan más del 50 % de la materia prima y suelen utilizarse para generar productos de bajo valor agregado. Sin embargo, estos subproductos presentan componentes con un alto valor comercial como los aceites ricos en omega 3, proteínas de alto valor nutricional, colágeno, enzimas y péptidos bioactivos. Objetivo. Presentar el estado actual respecto a la funcionalidad y el proceso de obtención de hidrolizados proteicos y péptidos bioactivos de origen pesquero. Desarrollo. Este trabajo se realizó en Costa Rica entre enero de 2017 y setiembre de 2019, en él se describe la generación y utilización de los subproductos de la industria pesquera, el proceso de obtención de hidrolizados y péptidos, desde las etapas preliminares hasta su fraccionamiento y purificación; finaliza con las aplicaciones y propiedades funcionales de estos compuestos como su valor nutricional, capacidad de retención de agua, emulsificante y espumante y su actividad antioxidante y antihipertensiva. Conclusión. Los hidrolizados proteicos y los péptidos de origen pesquero son una opción para la creación de nuevos ingredientes con aplicaciones en la industria alimentaria y farmacéutica, especialmente por su actividad antioxidante y antihipertensiva, propiedades que dependen del fraccionamiento y purificación de los péptidos bioactivos, por lo que se deben desarrollar y optimizar las tecnologías que permitan realizar estos procesos a nivel industrial y a un costo adecuado.
Efecto del Azofert®-F en la respuesta estomática del frijol ante el déficit hídrico
Authors: Estrada Prado Wilfredo - , Chávez Suáres Licet , Maceo Ramos Yariuska Caridad , Jerez Mompie Eduardo , Nápoles García María Caridad
Published: May 2021

Introducción. El déficit hídrico es el estrés abiótico de mayor incidencia en el crecimiento y rendimientode las plantas de frijol. Por ello, se buscan alternativas que permitan mitigar sus efectos adversos, como el uso de biofertilizantes a partir de la biodiversidad microbiana existente en el suelo. Objetivo. Se evaluó el efecto del inoculante Azofert®-F en el índice estomático (IE) de plantas de frijol en condiciones de estrés hídrico. Materiales y métodos. El experimento se desarrolló en el período 2016-2017 en un cuarto con lámparas fluorescentes del departamento de Fisiología y Bioquímica Vegetal del Instituto Nacional de Ciencias Agrícolas, San José de las Lajas, Mayabeque, Cuba. Para el estudio anatómico la epidermis foliar se observó al microscopio óptico de luz (Motic) y se fotografió con una cámara acoplada. Las variables estomáticas se midieron mediante el programa morfométrico ImageJ y se procesaron con el paquete estadístico SPSS Versión 22.0. Se utilizó un diseño completamente aleatorizado. Se seleccionaron diez plantas al azar por cada tratamiento para evaluar la densidad y el índice estomático. Resultados. El Azofert®-F incrementó el IE de los cultivares estudiados. La estructura de las células epidérmicas se alteró en ambas superficies foliares cuando disminuyó la humedad en el suelo; la densidad estomática se modificó con la presencia del producto. En la superficie abaxial las células oclusivas se mostraron más estrechas, lo que evidenció que las hojas de mayor IE presentaron estomas más pequeños. El Azofert®-F provocó que los estomas permanecieran semicerrados cuando hubo deficiencia hídrica en las plantas, debido a que estas bacterias ayudaron a aliviar el déficit hídrico mediante la producción de hormonas y otras enzimas que regulan la pérdida de agua por transpiración. Conclusión. La aplicación de Azofert®-F incrementó la densidad e índice estomático de plantas de frijol en condiciones de estrés hídrico.
Categorization of the water status of rice inoculated with arbuscular mycorrhizae and with water deficit
Authors: Ruiz Sánchez Michel , Cabrera Rodríguez Juan Adriano , Del'Anico Rodríguez José M. , Muñoz Hernández Yaumara , Aroca Álvarez Ricardo , Ruiz Lozano Juan M.
Published: May 2021

Introduction. The water deficit negatively affects rice plants and limits their productivity. Arbuscular mycorrhizal symbiosis has been shown to improve rice productivity in drought conditions. Objective. To propose a new categorization for the state of water stress of rice plants inoculated (AM) or not with arbuscular mycorrhizal fungi (nonAM) and exposed to water deficit (D) during the vegetative phase. Materials and methods. The experiment was carried out under controlled greenhouse conditions during the years 2009 and 2010 at the Zaidín Experimental Station, Granada, Spain. The rice transplantation was carried out fourteen days after germination to pots with a 5 cm water sheet and at 30, 40, or 50 days after transplantation (DAT) they were subjected to water deficit during a period of 15 days, at which time the water sheet was restored. The control treatment was maintained throughout the cycle under flood conditions (ww). Evaluations were performed at 45, 55, 65 DAT and after recovery at 122 DAT. The harvest was carried out at 147 DAT. Results. The reduction in water supply demonstrated water stress in the plants, manifested by the decrease in the water potential of the leaves. Arbuscular mycorrhizal symbiosis always favored the water status of the plant. Four categories of water status of plants were proposed taking into account water potentials and agricultural yield: no stress (≥-0.67 MPa); light stress (<-0.67 to -1.20 MPa); moderate stress (<-1.20 to -1.60 MPa), and severe stress (<-1.60 MPa). Conclusion. The categorization of stress due to the water deficit is a tool of high scientific value for the specific case of rice, since this plant has the capacity to adapt to tolerate the presence of a sheet of water throughout its biological cycle and is highly susceptible to water deficit.
Resistencia de cultivares de berenjena (Solanum melongena L.) a Tetranychus ludeni (Acari:Tetranychidae)
Authors: Sierra-Monroy Janeth Alexandra , Burbano-Figueroa Oscar , Grandett-Martínez Liliana María , Rodriguez-Pinto Maria Del Valle , Tordecilla-Zumaqué Lilibet , Rubiano-Rodríguez José Antonio
Published: May 2021

Introducción. La berenjena Solanum melongena L. (Solanales: Solanaceae), es uno de los cultivos de hortalizas más importantes del Caribe Colombiano. Cultivo afectado por el ácaro rojo Tetranychus ludeni (Acari:Tetranychidae) el cual causa pérdidas económicas asociadas al rendimiento y contaminación ambiental por sobredosificaciones de acaricidas, lo que repercute en la salud de los agricultores y su familia. Objetivo. Evaluar la resistencia de siete materiales de berenjena a infestaciones artificiales de T. ludeni en condiciones de campo e invernadero. Materiales y métodos. El estudio se desarrolló entre abril y octubre de 2017 en el Centro de Investigación Turipaná de la Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA). Los genotipos evaluados fueron las variedades Corpoica C029, Corpoica C015, las accesiones C036, C025, C049, y los cultivares regionales Buelvas y González; en campo e invernadero bajo un diseño en bloques completos al azar en tratamientos con cuatro repeticiones. Resultados. Las pruebas de campo mostraron diferencias significativas en la densidad poblacional de ácaros entre los materiales (F=4,42; p<0,0004), donde C025 tuvo los mayores valores y Buelvas los menores. La prueba de invernadero reveló diferencias en la densidad poblacional de ácaros entre materiales, con mayor población el cultivar C036 y con menor Buelvas. Conclusiones. Los cultivares regionales Buelvas y González exhibieron resistencia contra T. ludeni, proporcionando evidencia que existió resistencia a T. ludeni en campo en los materiales regionales de berenjena del Caribe colombiano. Las pruebas bajo invernadero, con las mayores densidades del ácaro, ofrecieron mayor poder discriminatorio y se sugieren en la fase inicial de evaluación completa del banco de germoplasma. Se sugiere el uso del cultivar Buelvas como genotipo resiste y C036 como genotipo de referencia susceptible a T. ludeni en futuros ensayos experimentales. Buelvas se recomienda como genotipo de referencia en razón de la estabilidad de la resistencia que mostró en campo e invernadero y asociada a mayores rendimientos.
Valor nutritivo de mezclas forrajeras en épocas seca y de lluvias en Nariño, Colombia
Authors: Portillo López Paola Andrea , Meneses Buitrago Diego Hernán , Lagos Burbano Elizabeth , Duter Nisivoccia María E. , Castro Rincón Edwin
Published: May 2021

Introducción. El uso de asociaciones de gramíneas y leguminosas permite tener mayor valor nutritivo y rendimiento de materia seca. Objetivo. Evaluar seis mezclas de forrajes perennes, anuales y leguminosas en épocas seca y de lluvias en Nariño, Colombia. Materiales y métodos. El estudio se realizó entre diciembre 2017 y noviembre 2018 en el Centro de Investigación Obonuco de la Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA). Se utilizó un diseño de bloques completos al azar con un arreglo de parcelas sub-divididas. Se determinó: PC (proteína cruda), FDN (fibra en detergente neutro), FDA (fibra en detergente acido), D (digestibilidad), ENL (energía neta de lactancia) y la TC (tasa de crecimiento de las especies). Para el análisis se empleó el software R V.3.6.0. Resultados. El valor nutritivo de las mezclas para la época de altas y bajas precipitaciones presentó diferencias significativas (p<0,05) a la edad de 28, 35 y 42 días, donde la mezcla conformada por Dactylis glomerata arrojó los mejores resultados a excepción de la PC a la edad de los 28 días. Los mejores valores para esta mezcla se presentaron en época seca. Conclusión. La mezcla 4 (Trifolium repens + Trifolium pratense + Dactylis glomerata) presentó la mayor tasa de crecimiento y acumulación de PC a la edad de 35 y 42 días en las dos épocas evaluadas; por lo anterior, podría evaluarse a nivel comercial como una potencial alternativa alimenticia para los sistemas ganaderos de trópico alto de Nariño.
Irrigación en plantaciones de café y su efecto en el agua residual del procesamiento de los frutos
Authors: Maradiaga Rodriguez Walter Danilo , Pêgo Evangelista Adão Wagner , Lima Luiz Antônio , Júnior José Alves
Published: May 2021

Introducción. En el proceso de beneficiado del café, se generan subproductos ricos en nutrientes y con elevada carga orgánica, que en la mayoría de casos son subutilizados y depositados, sin tratamiento previo en los cuerpos hídricos. Objetivo. Evaluar la influencia de la irrigación, sobre los compuestos químicos del agua residual obtenida del procesamiento de los frutos del café de la variedad “Rubi”, irrigada por pivote central. Materiales y métodos. El experimento se desarrolló en la Universidad Federal de Lavras, Brasil, durante el año 2018. El delineamiento estadístico utilizado fue en bloques al azar, con tres repeticiones. Los tratamientos correspondieron a cinco láminas de irrigación (0, 60, 80, 100, 120 y 140 % de la lámina de agua evaporada del tanque Clase A). El distanciamiento de siembra utilizada por parcela, fue de 3,5 m X 0,80 m, en un área de 1,6 ha-1, subdividida en dieciocho parcelas con aproximadamente 888 m2. Los frutos cerezas del café, fueron cosechados de cada tratamiento y mezclados en agua, en proporción de 2 l agua: 1 l fruto de café y en seguida despulpados en una licuadora industrial. El agua residual obtenida, fue analizada a través del método estándar para el análisis de agua residual. Resultados. Las láminas de irrigación, provocaron efecto significativo, sobre los parámetros químicos evaluados, las plantas irrigadas con base en el 57 % del agua evaporada del tanque Clase A, resultaron con compuestos químicos dentro de los patrones establecidos, para el descarte de agua residual en Brasil. El contenido de Mg, S, Mn, P, Zn, Cu y Fe, fue superior a las parcelas que no recibieron irrigación. Conclusiones. El uso de la irrigación en café, produjo efectos significativos sobre la concentración de los compuestos químicos del agua residual de los frutos del café de la variedad “Rubí”.
Novas Diretrizes Curriculares Nacionais para a Formação Inicial de Professores para a Educação Básica: avanços ou retrocessos?
Authors: Marques Nelson Luiz Reyes , Orengo Gilberto , Müller Maykon Gonçalves , Buss Cristiano da Silva , Vaz da Silva Marcos André Betemps
Published: May 2021

O artigo contextualiza a política de formação de professores da Educação Básica no Brasil fazendo uma análise das Diretrizes Curriculares Nacionais para a formação inicial e continuada dos profissionais da educação de 2001 até 2019, tendo como foco principal a discussão do entendimento de prática como componente curricular nesses documentos. Apresentamos uma análise do tempo dedicado à prática ao longo dos Cursos, bem como dos deslocamentos do conceito de Prática nos documentos. É possível perceber uma variação entre posturas mais teóricas até aquelas mais voltadas para a aplicação dos conhecimentos. Por último, é descrito que as Novas Diretrizes Curriculares Nacionais para a Formação Inicial de Professores da Educação Básica podem prejudicar a constituição de futuros docentes reflexivos, autônomos e com abrangência nos mais diferentes saberes profissionais, disciplinares, curriculares e experienciais.
Aposentadoria na perspectiva de trabalhadores do setor privado
Authors: Carvalho Luciane Santos Machado de , Rodrigues Marilsa De Sá , Oliveira Adriana Leônidas de , Heleno Maria Geralda Viana
Published: May 2021

A aposentadoria e a ruptura do vínculo de trabalho podem causar sofrimento aos trabalhadores. O objetivo desse estudo foi analisar a percepção sobre a aposentadoria de pessoas com idade a partir de 45 anos do setor privado e de profissionais de Recursos Humanos envolvidos em Programas de Preparação para Aposentadoria. A metodologia utilizada foi de caráter exploratório e, para a coleta de dados foram realizadas entrevistas semiestruturadas em profundidade. Elas foram classificadas em categorias apriorísticas e analisadas por meio das técnicas qualitativas da análise de conteúdo. Participaram da pesquisa vinte profissionais selecionados pela rede profissional da pesquisadora e pela técnica “Bola de Neve”. Os resultados mostraram a percepção dos participantes quanto ao significado do trabalho como dedicação e realização e como fonte de sustento, e a aposentadoria foi entendida como indicativo de dever cumprido. A percepção das perdas em decorrência da aposentadoria foi em relação à manutenção da assistência médica, à ausência da convivência com colegas de trabalho e aos aspectos financeiros envolvidos. Houve entendimento positivo quanto à contribuição dos Programas de Preparação para Aposentadoria, que oportunizam planejamento e estabelecimento de novos objetivos. Concluiu-se que a aposentadoria foi percebida pelos participantes como oportunidade de maior tempo disponível, qualidade de vida e saúde; entretanto, demonstraram preocupação em relação ao aspecto financeiro e à manutenção da assistência médica.
Polska, ale jaka?
Authors: Zakrzewski Maciej
Published: May 2021

Poland, but what?The article introduces to the most important political debates in Poland in the post -partition era. Experience of losing own state and long period of living under foregin goverment fundamantaly determined ways of political thinking in Poland. That’s why besieds disputes over the rules of political and social order, Poles were in debates over the ways of restitution of independet state. Lasted almost 200 years discution between insurectionists and political realism fallowers was one of the most significant character of intelectuall history of Poland. The presented sketch has shown that the polish political thinking today is still deeply determined by old divisions.
Planeación didáctica por competencias: El último nivel de concreción curricular
Authors: Ruiz-Espinoza Francisco Higinio , Pineda-Castillo Kristian Armando
Published: May 2021

En este artículo se revisa y reflexiona en el tema de la planeación didáctica como la actividad docente que forma parte del último nivel de concreción curricular, la cual, desde el enfoque basado en competencias, es considerada un elemento clave para el logro de metas educativas establecidas a corto y largo plazo. De esta manera, este trabajo tuvo como objetivo determinar los elementos más importantes para una planificación didáctica pensada en la formación por competencias, tomando en cuenta los diferentes niveles de concreción del currículo. Se apeló al enfoque cualitativo recurriendo a un diseño de investigación documental de modo que, por este medio, se realizó el análisis de diferentes documentos consultados en línea, los cuales permitieron sustentar la estructuración de los niveles de concreción curricular y la planificación educativa con base en el enfoque por competencias. Asimismo, se realizaron continuas reflexiones teóricas y prácticas a partir de la experiencia de los investigadores. Entre los resultados, se puede destacar que la planeación didáctica es una actividad compleja que llevan a cabo tanto educadores como autoridades educativas, quienes trazan la ruta de acción que los guiará durante el inicio, desarrollo y cierre de un ciclo educativo, partiendo de criterios políticos y pedagógicos preestablecidos a nivel nacional e internacional. Entre las conclusiones que trascienden más en esta indagación es necesario mencionar que, en el plan de trabajo en el aula estriba el corazón de la praxis del educador y el seguimiento en los aprendizajes de los estudiantes.
Icterohemorrhagic Leptospirosis in Infant: Clinical Case
Authors: Kharchenko Gennady A. , Kimirilovа Olga G.
Published: May 2021

Background. The importance of timely leptospirosis diagnosis and treatment has increased due to sporadic children morbidity. It is crucial in order to prevent the complications and adverse outcomes development.

Clinical Case Description. The data from literature and our own clinical observation of leptospirosis with benign outcome in infant (with kidney damage, purulent meningitis, hemorrhagic syndrome and congenital heart disorder) is presented.

Conclusion. The description of leptospirosis symptoms and course in the child is presented in the form of analysis of the clinical setting for further medical education, including differential diagnostics with viral hepatitis.
Fenologia reprodutiva de Ochrobryum Mitt. (Leucobryaceae, Bryophyta) no Brasil
Authors: Oliveira Douglas Santos , Peralta Denilson Fernandes
Published: May 2021

RESUMO O gênero de musgos Ochrobryum foi escolhido para este estudo fenológico porque possui uma ampla distribuição no Brasil, especialmente nas áreas de Cerrado; nunca foi estudado do ponto de vista ecológico e possui número significativo de amostras no Herbário SP. Nós analisamos 302 exsicatas (totalizando 906 indivíduos - três indivíduos por exsicata), e encontramos padrões fenológicos e alternância de estruturas reprodutivas em relação a sazonalidade. A reprodução sexual em Ochrobryum está relacionada com os períodos chuvosos e a reprodução assexual ocorre em todas as épocas do ano com aumento na estação seca. Nossos resultados demonstram que Ochrobryum alterna seu potencial de colonização sazonalmente.
PRODUZINDO A SUBALTERNIDADE: AS MERENDEIRAS NOS DOCUMENTOS E INICIATIVAS DA GESTÃO FEDERAL DO PNAE
Authors: Melgaço Mariana Belloni , Matos-de-Souza Rodrigo
Published: May 2021

Neste trabalho tratamos da merendeira, profissional responsável pelo preparo da alimentação escolar das escolas públicas brasileiras e que exerce papel fundamental para o atingimento dos objetivos do Programa Nacional de Alimentação Escolar (PNAE): contribuir para o crescimento e desenvolvimento biopsicossocial, para a aprendizagem, para o rendimento escolar e para a formação de hábitos alimentares saudáveis dos estudantes. Apesar da importância da merendeira para o Programa, o seu potencial educativo é muitas vezes invisibilizado e não reconhecido no âmbito escolar. Diante disso, este estudo teve como objetivo averiguar quais são os documentos e iniciativas desenvolvidos pela gestão federal do PNAE que envolvem a merendeira e se podem contribuir com a (des)valorização da sua profissão e sua manutenção como sujeito não participante das decisões no âmbito escolar, reforçando sua posição de subalternidade. A análise documental permitiu verificar que o Programa possui arcabouço legal para fortalecer e valorizar os papéis das merendeiras, especialmente no que se refere à função de educadora. Porém, a análise sugere que as ações ficam mais voltadas para o âmbito da inscrição no discurso oficial do que no da representação/representatividade, o que pode contribuir para o seu desprestígio social e a consolidação da sua função enquanto sujeito subalterno.
The future is now: pediatric neuropsychological presurgical epilepsy evaluation in the age of COVID‐19
Authors: Nussbaum Nancy L. , Young Stephanie R. , DeLeon Rosario C. , Engelmann Morgan L. , Schraegle William A.
Published: May 2021

Objective. The objective of this brief report is to review an assessment paradigm for conducting virtual neuropsychological pre‐surgical evaluations in the context of the COVID‐19 pandemic.

Methods. A multidisciplinary epilepsy team at a Level 4 epilepsy center within a large children's academic medical center convened to discuss the challenges and possible solutions for Phase II evaluations for pediatric patients with pharmacoresistant epilepsy during the COVID‐19 pandemic. The neuropsychologists explored evidence‐based methods of virtual evaluation and developed a systematic decision‐making process for youth requiring a Phase II evaluation.

Results. We propose models of assessment which prioritize teleneuropsychology when possible to reduce the risk of infection: (1) evaluation with directly administered tests through a completely virtual format; (2) virtual/in‐person hybrid evaluation; and (3) clinical observation/interview in a virtual format supplemented by survey data. These models are illustrated by three cases.

Significance. Using virtual assessment models, the team was able to meet the urgent patient care needs and collect useful data while minimizing the risk of virus spread. The paradigms presented may be useful examples for other multidisciplinary surgical teams interested in incorporating teleneuropsychology into their practices.