bluuebunny/crossref_metadata_2025 huggingface dataset:
Estimación de los límites de cambio (deltacheck) en el laboratorio clínico
Authors: Castro-Castro Maria-José , Sánchez-Navarro Lourdes
Published: July 2021

Objetivos

Los límites de cambio, conocidos como deltacheck, son aquellos valores que indican sospecha de que la variación entre el resultado actual obtenido y el resultado anterior de la misma magnitud en un mismo paciente se debe a un error y, por tanto, dicho resultado ha de ser cuestionado. El propósito del presente estudio es establecer los límites de cambio para algunas magnitudes hematológicas y bioquímicas, con el fin de detectar resultados potencialmente erróneos, así como evaluar su eficacia a la hora de detectar resultados erróneos, para estandarizar el proceso de control de la plausibilidad.

Métodos

Se calcularon los límites de cambio para 13 magnitudes bioquímicas y 6 hematológicas. Para cada magnitud, se calcularon las diferencias relativas (D), expresadas como la diferencia porcentual entre dos resultados consecutivos en el mismo paciente. A partir de dichas diferencias (D), se calcularon los percentiles 5 y 95 de la distribución de datos.

Para evaluar eficacia de los límites de cambio se emplearon 43 informes de laboratorio considerados erróneos a partir del procedimiento habitual de control de la plausibilidad utilizado en el laboratorio.

Resultados

De los 43 informes de laboratorio que contenían algún error, 31 (72%) fueron clasificados como errores de contaminación por administración endovenosa y 12 (28%) como errores en la identificación del paciente. Todos los informes de laboratorio erróneos fueron detectados al aplicar conjuntamente los límites de cambio estimados de las diferentes magnitudes.

Conclusiones

La mejor combinación de magnitudes en la misma muestra capaces de detectar informes de laboratorio erróneos fue: concentración de potasio, albúmina, creatinina, glucosa y hemoglobina.
Combined mixed finite element and nonconforming finite volume methods for flow and transport in porous media
Authors: El Moutea Omar , El Amri Hassan
Published: July 2021

This paper is concerned with numerical methods for a coupled system of two partial differential equations (PDEs), modeling flow and transport of a contaminant in porous media.
This coupled system, arising in modeling of flow and transport in heterogeneous porous media, includes two types of equations: an elliptic and a diffusion-convection equation.
We focus on miscible flow in heterogeneous porous media.
We use the mixed finite element method for the Darcy flow equation over triangles, and for the concentration equation, we use nonconforming finite volume methods in unstructured mesh.
Finally, we show the existence and uniqueness of a solution of this coupled scheme and demonstrate the effectiveness of the methodology by a series of numerical examples.
Sedimentary facies, stratigraphy, and depositional environments of the Ecca Group, Karoo Supergroup in the Eastern Cape Province of South Africa
Authors: Baiyegunhi Christopher , Liu Kuiwu
Published: July 2021

The stratigraphy of the Ecca Group has been subdivided into the Prince Albert, Whitehill, Collingham, Ripon, and Fort Brown Formations in the Eastern Cape Province, South Africa. In this article, we present detailed stratigraphic and facies analyses of borehole data and road-cut exposures of the Ecca Group along regional roads R67 (Ecca Pass), R344 (Grahamstown-Adelaide), R350 (Kirkwood-Somerset East), and national roads N2 (Grahamstown-Peddie) and N10 (Paterson-Cookhouse). Facies analysis of the Ecca Group in the study area was performed to deduce their depositional environments. Based on the lithological and facies characteristics, the stratigraphy of the Prince Albert, Whitehill, Collingham, and Fort Brown Formations is now subdivided into two informal members each, while the Ripon Formation is subdivided into three members. A total of twelve lithofacies were identified in the Ecca Group and were further grouped into seven distinct facies associations (FAs), namely: Laminated to thin-bedded black-greyish shale and mudstones (FA 1); Laminated black-greyish shale and interbedded chert (FA 2); Mudstone rhythmite and thin beds of tuff alternation (FA 3); Thin to thick-bedded sandstone and mudstone intercalation (FA 4); Medium to thick-bedded dark-grey shale (FA 5); Alternated thin to medium-bedded sandstone and mudstone (FA 6); and Varved mudstone rhythmite and sandstone intercalation (FA 7). The FAs revealed gradually change of sea-level from deep marine (FA 1, FA 2, FA 3 and FA 4, FA 5, and FA 6) to prodelta environment (FA 7). This implies that the main Karoo Basin was gradually filling up with Ecca sediments, resulting in the gradual shallowing up of the water depth of the depositional basin.
A comparative analysis of the performance of centralized inverter and parallel inverter based hybrid microgrid system for distributed generation
Authors: Peddeeti Sudheer , Vuddanti Sandeep
Published: July 2021

In this paper, the performance and reliability of the hybrid microgrid system is analyzed with the two different configurations where multiple distributed energy sources supplied the power to the loads through centralized inverter and parallel inverter. The power quality, power sharing, power exchange and voltage and frequency drop parameters are evaluated by applying 1.1 kVA load on the centralized and parallel inverter hybrid systems with LL and LLG faults. The hysteresis current controller in the centralized inverter hybrid system is assuring the accurate power exchange between the grid and hybrid system during abnormal conditions. The droop controller in parallel inverter hybrid system is effectively sharing the load among the inverters during normal and abnormal conditions. The comparative analysis of these energy systems is made based on control aspects, power quality, reliability and economics.
Optimal reconfiguration of balanced and unbalanced distribution systems using firefly algorithm
Authors: Battula Amrutha Raju , Vuddanti Sandeep
Published: July 2021

With increasing demand in energy, efficiency, reliability, and resiliency in the power systems, integration of distributed generation (DG) or renewable energy sources in the local distribution system is trending nowadays. The power system optimization in distribution networks plays a prominent role in planning reliable supply to the users. This paper presents a meta-heuristic approach to improve the system performance by considering: a) voltage profile improvement, b) minimize the active power loss, and c) overall operation cost as the objective functions of the distribution system reconfiguration (DSR). Modified Newton Raphson (MNR) is used for a load flow analysis of the 33 bus balanced test system and 25 bus unbalanced distribution system. To study the performance of the system objective functions, three different scenarios are considered: i) with DG integrated, ii) with DSR performed, and iii) DG placed along with DSR. These scenarios are compared with the base system configuration parameters along with convergence comparison of harmony search algorithm (HAS) and particle swarm optimization (PSO) with firefly algorithm (FFA) of the distribution systems.
Adverse childhood experiences and trauma informed care: treating the whole patient with a more complete osteopathic approach
Authors: Marcoux T. Brian
Published: July 2021

In 1998, a seminal study identified a strong connection between participants’ exposures to adverse childhood experiences (ACEs) and the development of risk factors for serious health conditions later in life. More than two decades later, leaders in both policy and health care professions now appreciate the impact of social determinants of health, including the enormous societal costs incurred by deleterious experiences, and recognize that treating illness begins with prevention in early childhood. The trauma informed care (TIC) model offers a treatment approach that lends consideration to the traumatic experiences that impact a given patient and allows for more complete treatment by their physician. Delivering care under the TIC model encourages trauma identification, early intervention, system level awareness and policy change, and avoiding retraumatization in the therapeutic setting. Various programs across the country seek to employ these methods at the community, state, and federal level. Several programs aimed at introducing medical students to these principles have contributed to an incorporation of TIC within the physician pipeline. In this Commentary, the author proposes an expansion of the Tenets of Osteopathic Medicine with a fifth principle—considering the implications of a patient’s past formative experiences, their present life circumstances, and their future prospects—as a vehicle for instilling TIC principles ubiquitously throughout osteopathic medical training to develop physicians who treat the whole person more completely and are better equipped to manage this public health crisis.
The utility of serum inhibin B, anti-Müllerian hormone and insulin growth factor-1 in predicting a positive response to GnRH analogs for diagnosing central precocious puberty in girls
Authors: Ziqin Liu , Qinwei Song , Xiaobo Chen , Xiaohui Li
Published: July 2021

Objectives

The use of inhibin B (INHB), anti-Müllerian hormone (AMH) and insulin-like growth factor-1 (IGF-1) in differentiating central precocious puberty (CPP) from non-CPP was evaluated.

Methods

In total, 115 Chinese girls were recruited (CPP: 44, non-CPP: 71). The diagnostic performance of INHB, AMH and IGF-1 in differentiating CPP from non-CPP was analyzed using receiver operating characteristic (ROC) curves.

Results

INHB levels were higher in the CPP group than in the non-CPP group (55.56 ± 22.42 vs. 32.97 ± 15.59 pg/mL; p<0.001). AMH levels were similar in the CPP and non-CPP groups (6.63 ± 3.74 vs. 5.70 ± 3.15 pg/mL; p=0.158), and IGF-1 levels were much higher in the CPP group than in the non-CPP group (290.75 ± 79.78 vs. 200.10 ± 54.01 pg/mL; p<0.001). The area under the ROC curve (AUC) was greatest for INHB (0.819, standard error (SE) 0.041), followed by IGF-1 (0.809, SE 0.047) and AMH (0.567, SE 0.057). Among the ROC curves including combinations of these parameters, the AUC for INHB + IGF-1 was 0.849 and that for INHB + AMH was 0.768.

Conclusions

Serum INHB and IGF-1 measurements could predict positive responses to gonadotropin-releasing hormone (GnRH) analog stimulation in girls with precocious puberty.
Hypoxia stimulates the migration and invasion of osteosarcoma via up-regulating the NUSAP1 expression
Authors: Zhang Ling , Song Jingtao , Xin Xu , Sun Donghong , Huang Huiting , Chen Yang , Zhang Tao , Zhang Yiming
Published: July 2021

Osteosarcoma is a highly aggressive malignant tumor, which most commonly occurs in children and adolescents. This study aims to reveal that hypoxia promotes the invasion of osteosarcoma cells by up-regulating the expression of NUSAP1. The expression of HIF-1α and NUSAP1 was significantly up-regulated in MG63 cells cultured in hypoxia for 6–36 h. Furthermore, hypoxia induced the migration and invasion of MG63 cells and regulated the level of E-cad, N-cad, Vimentin, Snail, Slug, MMP2, and MMP9 proteins. Importantly, knockdown of NUSAP1 inhibited hypoxia-induced cell migration and invasion. In the hypoxia microenvironment, the addition of HIF-1α inhibitor or the transfection of siRNA specifically targeting HIF-1α significantly reduced the expression of HIF-1α and NUSAP1 and markedly inhibited the migration and invasion of MG63 cells under the hypoxia microenvironment. In conclusion, hypoxia induced the expression of NUSAP1 in a HIF-1α-dependent manner, stimulating the migration and invasion of MG63 cells.
Breaking the barriers – towards a more inclusive chemical sciences community
Authors: Norton Laura , Palermo Ale
Published: July 2021

It is now generally recognised that to get the very best scientific outputs we need a diversity of inputs and talents however, progress is still slow. Whilst we have made some progress to improve equality, diversity and inclusion in the chemical sciences in relation to gender, there is still a long way to go. Today chemistry does not yet welcome everyone—but it should, and it will.
In-mold lightweight integrating for structural/functional devices
Authors: Yuan Zhijun , Zhang Qingsong , Wang Hui , Chen Yizhe , Bai Qiuyang
Published: July 2021

Integration of function in structure is troublesome for structural/functional devices. A novel method of in-mold integrating for structural/functional devices was proposed and studied. In this method, a functional film was prepared by printing and surface mounting to achieve electrical functions, and then the film was formed and back molded into a final product. Owing to the complex electronic film, new problems are raised in the in-mold integrating process. The process was modeled, and was designed with the genetic algorithm. The interaction between the melt and the mounted film was analyzed by two-way fluid-structure coupling. Heat dissipation with anisotropic thermal conductivity was examined. Accordingly, a control panel was manufactured and tested. From the study, the functional film, causing asymmetrical cooling issue, results in concave warpage, which can be effectively controlled by comprehensive processing optimization. Film deformation is significant at button area because of tiny hollow structure. The deformation can be decreased by the epoxy encapsulation. The anisotropic thermal conductivity and injection layer cause heat dissipation problem, and thermal effect should be checked and designed by full thermal analysis. With the designed scheme, manufactured panels can perform all control functions, satisfy appearance requirements, and achieve lightweight performance.
Antifouling enhancement of polyacrylonitrile-based membrane grafted with poly(sulfobetaine methacrylate) layers
Authors: Hu Jianlong , Zhu Xuanren , Xie Deqiong , Peng Xianya , Zhu Meng , Cheng Feixiang , Shen Xiang
Published: July 2021

In this work, zwitterionic polyacrylonitrile (PAN)-based membranes were synthesized via surface grafting strategy for improving the antifouling properties. The copolymer membrane consisting of PAN and poly(hydroxyethyl methacrylate) segments, was cast via nonsolvent induced phase separation, and then treated with acryloyl chloride to tether with carbon-carbon double bonds. Zwitterionic poly(sulfobetaine methacrylate) (PSBMA) layers were grafted onto membrane surface via concerted reactions of radical grafting copolymerization and quaternization with 2-(dimethylamino)ethyl methacrylate) and 1, 3-propanesultone (1, 3-PS) as the monomers. The grafting degree (GD) of PSBMA layers increases with the incremental content of monomers, leading to the enhancement in membranes surface hydrophilicity. The permeation experiments show that the flux of the zwitterionic membrane increases and then decreases with the increasing GD value, because of the surface coverage of PSBMA layers. The zwitterionic membrane has excellent separation efficiency for oil-in-water emulsion, with the rejection of a higher value than 99%. The irreversible membrane fouling caused by oil adsorption has been suppressed, as proved by the cycle-filtration tests. These outcomes confirm that oil-fouling resistances of membranes are improved obviously by the surface grafting of zwitterionic PSBMA layers.
Association between mobile phone use and hearing impairment: a systematic review and meta-analysis
Authors: Taziki Balajelini Mohammad Hosein , Mohammadi Masoud , Rajabi Abdolhalim
Published: July 2021

Objectives

To investigate whether a possible association of mobile phone use with hearing impairment was conducted a systematic review and meta-analysis.

Content

This is a systematic review and meta-analysis. A comprehensive literature search was carried out based on the Meta-analysis of Observational Studies in Epidemiology (MOOSE) methodology using PubMed, Scopus, Web of Science, OVID, and Cochrane. The Robins-I tool was used for quality assessment and risk of bias. Two investigators independently reviewed all articles. Pooled effect size was calculated and meta-analysis was performed to compute an overall effect size.

Summary

Overall, five relevant studies (two cross-sectional and three cohort studies) with 92,978 participants were included in the analysis. The studies were stratified by design, there was no significant association between mobile phone use and hearing impairment in cross-sectional studies (OR=0.94, 95% CI=0.57–1.31) and cohort studies (OR=1.09, 95% CI=0.93–1.25). In addition, the effect estimates did not differ significantly between cross-sectional and cohort studies (Q=0.50, p=0.48). Overall, the pooled odds ratio (OR) of hearing impairment was 1.07 (95% CI: 0.94–1.20), which indicates no significant association between mobile phone use and hearing impairment.

Outlook

Our findings indicate no association between mobile phone use and hearing impairment. However, these findings must be interpreted with caution.
Heterotridentate organodiphosphines in Pt(η3–P1X1P2)(Y) derivatives-structural aspects
Authors: Melník Milan , Mikuš Peter
Published: July 2021

This review covers over 30 examples of monomeric Pt(II) complexes of the types: Pt(η3–P1O1P2)(Y) (Y = PL, CL, OL), Pt(η3–P1N1P2)(Y) (Y = H, NL, CL, Cl, PL) and Pt(η3–P1P2N1)(Y) (Y = Cl). The heterotridentate donor ligands create 11 types of a couple chelate rings with common central atom O1 (η3–P1O1P2), N1 (η3–P1N1P2) and P2 (η3–P1P2N1). The most frequent is P1C2N1C2P2. Some cooperative effects between chelate rings and Y donor ligands were found and discussed. A degree of distortions of square-planar geometry about Pt(II) were also calculated.
Rechtsmobilisierung. Ein Systematisierungsversuch
Authors: Fuchs Gesine
Published: July 2021

Rechtsmobilisierung ist ein Versuch, unvermeidlich auftretende Konflikte in Gesellschaften friedlich zu bearbeiten. Sie kann daher zur Festigung von Demokratie und Rechtsstaatlichkeit beitragen. Um mögliche Wirkungen zu analysieren, muss Rechtsmobilisierung in einen sozialen und politischen Kontext gestellt werden. Ausgehend von Erhard Blankenburgs Arbeit zu individueller Rechtsmobilisierung schlägt dieser Beitrag eine Systematisierung von Rechtsmobilisierung vor, die individuelle und kollektive, diskursive und juristische Formen des Handelns umfasst. Diese Perspektive ermöglicht die Analyse der Wechselwirkungen zwischen diesen Formen. Besonders der Einbezug diskursiver Mobilisierung hilft, juristische Mobilisierung zu verstehen und zu erklären.
KUŞBURNU (Rosa canina) FENOLİK BİLEŞİKLERİNİN MİKROENKAPSÜLASYONU
Authors: ERDEM Furkan , GÜNDOĞAN Eda Nur , YILMAZ Merve Sılanur , SEZGİN İrem , SUMMAKOĞLU Yağmur , ŞAKIYAN DEMİRKOL Özge
Published: July 2021

Bu çalışmada, kuşburnu bitkisinde bulunan fenolik bileşiklerin mikroenkapsülasyonu sırasında kaplama materyali çeşidinin ve çekirdek:kaplama materyali oranının enkapsülasyon verimi ve ısıl stabilite üzerine etkileri incelenmiştir. Kaplama materyali olarak maltodekstrin ve gam arabik kullanılmıştır ve her iki kaplama materyali de fenolik ekstrakt tozları ile ağırlıkça 1:20 ve 1:30 oranlarında karıştırılmıştır. Mikroenkapsülasyon işlemi dondurarak kurutma yoluyla gerçekleştirilmiştir. Elde edilen mikroenkapsüller ısıl stabilitelerinin değerlendirilmesi amacıyla kek hamuruna ilave edilerek pişirme işlemi uygulanmış ve pişirme işlemi sonundaki ısıl stabiliteleri incelenmiştir. En yüksek enkapsülasyon verimi için en uygun kaplama materyalinin gam arabik, çekirdek:kaplama materyali oranının ise 1:20 olduğu belirlenmiştir. Mikroenkapsülasyon işleminin, kullanılan kaplama materyali ve çekirdek:kaplama materyali oranınından bağımsız, ısıl stabiliteyi arttırdığı tespit edilmiştir (P <0.05). En yüksek ısıl stabilite kaplama materyali olarak gam arabik, çekirdek:kaplama materyali oranı olarak da 1:30 kullanıldığında elde edilmiştir.
Digital ‘Lakshman Rekhas’: Understanding the Impact of Safety Apps on Women’s Freedom of Movement in Urban Spaces
Authors: Das Kaushiki
Published: July 2021

The paper examines how technologies intended for ensuring women’s safety affect freedom of movement and reproduce masculine domination over space.

Since times immemorial, humans have had an innate desire to explore and discover new spaces. However, for women, this desire has often been curtailed, due to the fear of being harassed or assaulted. Women tend to live by the ‘rape clock’; their daily routines, clothes, travel schedules and companions are constantly adjusted according to the location they have to visit. The recent proliferation of safety apps seek to offer a more secure way to travel through neighbourhoods. Inbuilt with safety audits, these apps prescribe the routes that women can take to travel to their destinations. The apps allow users to evaluate their current location in terms of seemingly objective parameters like security, openness, crowd density, lighting and transportation. In addition, the users can proactively determine the ‘safety score’ of the locality depending on how they feel about it and can also share its photos to justify the score.

However, the paper argues, safety apps tend to circumscribe women’s desire to loiter. By recommending routes to travel safely and by constantly prescribing the parameters that women need to keep in mind while venturing out, these apps narrow down the spaces women can access. It enhances the fear of being assaulted and curtails the pleasure of loitering. Secondly, the apps neglect the fact that conceptions of safety vary according to one’s social location. Most safety apps begin with the notion that their users comprise of an abstract, universal category of women. But, individuals hailing from different backgrounds, including class, caste, education, region and religion experience the world differently. What counts as a safe neighbourhood for one may be considered unsafe by another. The subjective evaluations in safety apps tend to present a lopsided notion of safety which may tilt the scales against localities frequented by people hailing from minority communities. This may have other cascading effects such as overpolicing, non-access to goods and financial services, etc. In addition, these apps tend to shift the onus of safety onto the woman. Moreover, the GPS tracking feature of apps is undergirded in the misogynistic logic that women’s movements are to be controlled.

The paper therefore critically analyses intriguing questions — How do safety apps determine what constitutes a safe neighbourhood for women? To what extent do these apps encourage freedom of movement for women? How can safety apps be restructured to accommodate women’s desire to loiter?
Cycling in(to) Society: Integration and Social Mobility in Copenhagen
Authors: Jensen Tanja Karen
Published: July 2021

Integration and the processes involved are increasingly becoming more important in anthropological studies as the world is globalising. However, individual experiences of migrants, especially those of women, are often not considered in academic research. Therefore, I aim to include personal experiences of migrant women by studying those in the context of integration in Copenhagen. I conducted fieldwork over two months in the city of Copenhagen through participant observation in a cycling course created by the Red Cross, along with several informal interviews and five in-depth interviews with key informants. This article examines how integration is perceived, whether intersecting physical and social mobility can aid integration, and what impact gender has on these processes. Integration in this context is argued to be a form of social mobility, one that describes a forward movement into society. The process of integration for the women considered in this research is aided by cycling, as moving through the city physically promotes social mobility. Cyclists learn to navigate both the social and physical environment around them, and they gain access to services as well as opportunities in the labour market.
Research of Determining Low-Reliability Elements of Multiple-Flows Compressed Air Braking System Based on Goal-Oriented (GO) Methodology
Authors: Vu Ngoc-Tuan , Phan Le-Duy , Nguyen Van-Dung , Vu Quoc-Bao
Published: July 2021

The multi-flows pneumatic braking system is one of the modern braking systems equipped with truck vehicles which is a very complex system consisting of many elements connected in series or parallel. The reliability of the braking system has a significant influence on safety and the ability to manoeuvre. The study of identifying low-reliability elements in the brake system is of great significance to improve the efficiency of maintenance and repair. This article shows the research results that determine low-reliability elements of the multi-flows pneumatic brake system based on GO methodology, and allow to examine each element's reliability and the complex system. The reliability assessment model is built based on GO theory and statistics data collected at the used units about the frequency of damage, ability, and time to repair and restore the assemblies in the brake system. By using this model, the reliability of the assemblies and the whole system can be determined at any point in time relative to the actual operating time of the brake system. The article's research results can be applied for surveying other components’ reliability and complex systems such as steering or suspension systems.
Adrenal ganglioneuromas: a retrospective multicentric study of 104 cases from the COMETE network
Authors: Deflorenne Elisa , Peuchmaur Michel , Vezzosi Delphine , Ajzenberg Christiane , Brunaud Laurent , Chevalier Nicolas , Christin-Maitre Sophie , Decoudier Bénédicte , Driessens Natacha , Drui Delphine D , Gilly Olivier , Goudet Pierre , Illouz Frédéric , Jublanc Christel , Lefebvre Hervé , Lopez Antoine-Guy , Lussey Charlotte , Morini Aurelien , Raffin-Sanson Marie-Laure , Raingeard Isabelle , Renoult-Pierre Peggy , Storey Caroline , Tabarin Antoine , Vantyghem Marie Christine , Vidal-Petiot Emmanuelle , Baudin Eric , Bertherat Jerome , Amar Laurence
Published: July 2021

Objective

Adrenal ganglioneuromas are rare, differentiated, neuroblastic tumors that originate from the peripheral sympathetic nervous system. Because of their rarity, information is limited, derived from small cases series. Our objective was to characterize this tumor and provide help for its management.

Methods

A retrospective multicenter analysis of adrenal ganglioneuromas from 20 French centers belonging to the COMETE network and one Belgian center.

Results

Among the 104 cases identified, 59.6% were women (n = 62/104), median age at diagnosis was 29 years, with 24 pediatric cases. 60.6% (n = 63/104) were incidentalomas. Ganglioneuromas were non-secreting tumors in 90.8% of cases (n = 89/98), whereas the preoperative hormonal evaluation was indeterminate for 9.2% of patients (n = 9/98). CT imaging, performed on 96 patients, revealed large tumors (median diameter of 50 mm) with a non-contrast density > 10 Hounsfield units in 98.1% (n = 52/53) and calcifications in 64.6% of cases (n = 31/48). Increased uptake on 123I-MIBG scintigraphy and 18F-FDG-PET/CT was observed in 26.7% (n = 8/30) and 42.2% (n = 19/45) of the tumors, respectively. All 104 patients underwent surgery. No recurrence was observed among the 42 patients who had an imaging follow-up (mean 29.6 months, median 18 months (4–156)).

Conclusion

Adrenal ganglioneuromas are large tumors, mostly nonfunctioning, without benign imaging features. Although the duration of follow-up was limited in our series, no recurrence was identified. A review of the literature confirms the absence of postoperative recurrence. Based on all available data, in the absence of special circumstances (genetic form, uncertain histological diagnosis), long-term follow-up is not necessary after complete surgery for patients with an adrenal ganglioneuroma.
Maestras integradoras y "adaptaciones curriculares": las huellas de las políticas socio-educativas en los "procesos de integración"
Authors: Debonis Florencia
Published: July 2021

Esta presentación se propone describir el trabajo docente de maestras integradoras en torno a las “adaptaciones curriculares” en la escolarización de niños/as con discapacidades en escuelas comunes, indagando en las huellas de políticas socio-educativas destinadas a la educación especial surgidas en la Reforma Educativa (1993), en Argentina. La investigación se realizó desde el enfoque socio-antropológico relacional y el trabajo de campo etnográfico consistió de entrevistas y observaciones en la cotidianeidad de escuelas primarias. Se advierte que la noción de “personal especializado”, introducida en la Ley Federal de Educación, atraviesa las actuales tareas desplegadas por las maestras en la adecuación curricular. Los resultados expuestos procuran alejarse de perspectivas totalizantes, pretendiendo visibilizar la complejidad de los procesos de concreción de políticas estatales.
Inclusión educativa en el nivel secundario. Un análisis de la producción académica en la Argentina reciente (2003-2018)
Authors: Pastore Pablo
Published: July 2021

En este artículo se presentan los principales resultados de una investigación orientada a analizar las producciones académicas del campo de la investigación educativa en la Argentina reciente (2003-2018) que conceptualizaron y problematizaron la inclusión educativa en el nivel secundario, a fines de caracterizar y comprender sus principales rasgos y su evolución. El estudio sistemático de una base conformada por 51 artículos de autores basados en instituciones argentinas, publicados en revistas académicas argentinas y extranjeras especializadas en educación, permite dar cuenta de cómo se ha entendido y abordado el problema de la inclusión educativa en este contexto. Finalmente, nuestras conclusiones proponen la posibilidad de explorar nuevos caminos de investigación a partir del concepto de justicia educativa.
Pensar la universidad o pensar la Nación: elementos novedosos del debate en Argentina a partir de una periodización de la revista Ciencia Nueva (1970-1974)
Authors: Faierman Florencia
Published: July 2021

La revista cultural, universitaria y de política científica Ciencia Nueva, editada entre 1970 y 1974 por científicos-intelectuales argentinos vinculados a la Facultad de Ciencias Exactas y Naturales de la Universidad de Buenos Aires, Argentina, expresa potentemente algunos debates de su tiempo. En el presente artículo se presenta una periodización de la revista que se articula con e ilumina una posible periodización de los debates sobre la autonomía universitaria, la planificación estatal de la universidad y el rol político destinado a y asumido por los académicos, durante los años de su publicación, coincidentes con la máxima radicalización política de los y las intelectuales en Argentina. Se trabajó con una metodología hermenéutica cualitativa y, en particular, con los aportes de los estudios de revistas y publicaciones periódicas.
Characterization of selected pyrolysis products of diseased orange wood
Authors: Kravetz Carolina , Leca Carlos , Brito José Otávio , Saloni Daniel , Tilotta David C.
Published: July 2021

Orange trees in Brazil are often burned as a means of eradication when they become infected with Huanglongbing disease. Rather than destroying them, which is a low-value proposition, one potential option is to utilize the biomass through pyrolysis. In this preliminary work, orange trees (Citrus sinensis) otherwise selected for purging, were sampled and pyrolyzed at 500 °C, and the charcoal and bio-oil were evaluated for potential value-added use. The results showed that the pyrolysis process resulted in 26.3% charcoal, 57.6% bio-oil, and 16.0% non-condensable gases. Qualitative analysis of the bio-oil by gas chromatography/mass spectrometry found 178 chemical compounds; however, only 25% of those compounds could be reliably identified. Potential applications of the compounds identified in the bio-oil were determined by examining the published literature, and it was found that at least 73% of them showed promise. Finally, initial studies on the immediate analysis of the pyrolysis charcoal showed that it potentially meets the standards set forth for Brazilian domestic use.
Enhanced toughness of reed (Phragmites australis) stalk with polyethylene glycol
Authors: Zhao Xue , Wang Mingjie , Shang Kai , Chen Yao , Gao Jianmin
Published: July 2021

Reed (Phragmites australis) is a cosmopolitan grass that is often the dominant species in the ecosystems it inhabits. It is widely used in furniture decoration as reed weaving products. However, the application of reed is limited due to its brittle nature and susceptibility to cracks. To increase the toughness of reed stalk, sodium chlorite (NaClO2) was used to remove the lignin from reed stalk, and then polyethylene glycol with different molecular weights (PEG 600, PEG 1000, PEG 2000, and PEG 4000) was used as a plasticizer. The micromorphology, crystal structure, and surface chemical composition of the modified reed stalk were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR). The bending strength and dynamic thermomechanical analysis (DMA) of the reed stalk were evaluated. The results showed that the delignified reed stalks plasticized with PEG 1000 or PEG 2000 showed better dimensional stability and toughness, and the smallest elastic modulus (133.268 MPa) was obtained when the samples were treated with PEG 2000. The results of thickness swelling showed that the dimensional stability increased after PEG modification. This research may provide the theoretical basis for the modification of reed stalk.
Cryopreservation of Immature Oocytes at Germinal Vesicle Stage. When Gamete Maturation Performance Seems to Be Most Appropriate?
Authors:   Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv, Yurchuk Taisiia
Published: July 2021

Fertility preservation is among the priorities in reproductive medicine. However, the cancer patients and women with various functional ovarian disorders, wishing to preserve future reproductive potential may have some contraindications or no possibilities to cryopreserve mature oocytes and ovarian tissue. Therefore, the development of techniques for immature oocyte cryopreservation is considered an alternative strategy. Here, we have evaluated the survival, maturation, fertilization and embryo development rates of immature oocytes (Germinal vesicle (GV) stage – group 1) after cryopreservation and in vitro matured (IVM) ones (group 2) prior to cryopreservation, compared with in vivo matured metaphase-II (MII) oocytes (group 3). Survival rates were 97.6, 96.2 and 98.2 % for groups 1–3, respectively. The maturation rate of GV oocytes in group 1 was significantly lower than in group 2 and made 52.0 and 73.2%, respectively. The highest fertilization rate was revealed in group 3, and the lowest one was in group 1. The groups 1–3 showed the same tendency for further embryo development, i. e. the blastulation rates were 20.0, 38.5 and 56.9%, respectively. Thus, the survival rate of cryopreserved oocytes did not depend on their maturity rate. However, the IVM oocytes displayed lower fertilization and blastulation rates, than the in vivo matured ones. It was found that oocytes IVM should be performed prior to cryopreservation, because it ensured higher rates of maturation, fertilization and embryo development in vitro.
Experimental Cryoablation of Thyroid Gland with Propilthiouracyl-Induced Diffuse Hyperplasiae
Authors:   Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv, Pobielienskyi Kostiantyn , Pakhomov Oleksandr ,   Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv,   V.N. Karazin Kharkiv National University, Kharkiv, Gurina Tetyana Gurina Tetyana ,   Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv, Pobielienska Liliia ,   Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv,   V.N. Karazin Kharkiv National University, Kharkiv, Legach Ievgen Ievgen ,   Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv, Bozhok Galyna ,   Institute for Problems of Cryobiology and Cryomedicine of the National Academy of Sciences of Ukraine, Kharkiv, Ukraine,   V.N. Karazin Kharkiv National University, Kharkiv
Published: July 2021

Cryoablation under endoscopic control is considered to be a promising approach in therapy of benign nodules of thyroid gland (TG). However, pathologically altered TG tissue differs in thermal conductivity and heat capacity from normal one, therefore the model experiments in animals are necessary to determine the cryoablation parameters. In this research, the changes of temperature during cryoablation of experimental rat TG under normal conditions and the one with propylthiouracil (PTU)-induced diffuse hyperplasia (DH) were comparatively assessed. TG was cryo-ablated in rats, previously received a 0.1% PTU solution within 90 days, using a copper cryoprobe, cooled to liquid nitrogen temperature. The process was controlled using thermocouples placed at different distances from the iceball. Differences between thermograms of intact TG tissue and the samples with PTU-induced DH were established. To achieve the destruction effect of TG with DH to a depth of more than 1 mm, the need of implementing two freeze-thaw cycles with 120-second cryoprobe exposure was proven.
The application of salutogenesis to teaching and learning – A systematic review
Authors: de Oliveira Olney R. , Kiss E.
Published: July 2021

Purpose

The inclusion of salutogenic principles in education deepens and broadens the understanding of the teaching and learning process in a healthy way and opens the potential to create a sound educational environment characterised by the prevention of burnout, improved physical and mental health, and higher levels of achievement. The aim of this review is to fill the lack of comprehensive information regarding the relationship of salutogenesis, sense of coherence, and the process of teaching and learning.

Materials/methods

A literature search was carried out in Web of Science and Scopus electronic databases with the cutoff date of July 2020. Search words were sense of coherence, salutogenesis, education, school, academic performance, achievement, students, and their combinations. Altogether 62 articles were found on the relationship of salutogenesis, sense of coherence, and education but only 6 were related to salutogenic teaching/learning process. These were included in the present review.

Results

The studies included in this review presented salutogenic models related to teaching literacy as a learning process through life, building sustainable relationship between supervisor and students, improving transcultural competence, and being able to solve conflicts across cultures. Practical implications were demonstrated such as the use of drawing as an integration tool to improve self-expression and emotional recognition, realisation of teaching practice as an exercise for self-consciousness, and introducing the concept of teacher as a source of emotional security for students.

Conclusions

The models bring different but equally valuable contribution to the salutogenic teaching process which strengthens the educational environments resulting in better academic performance, as well as physical and mental health.
Pensamiento político de los adolescentes a través de las narrativas transmedia
Authors: Pérez Jairo Antonio , Peláez Diana , Molina Ruth , Duque Álvaro
Published: July 2021

¿Cómo fomentar una cultura de participación política en adolescentes a través de un juego de realidad alternativa (ARG, por sus siglas en inglés)? Fue la pregunta de investigación planteada en este proyecto, que se intentó responder siguiendo un enfoque metodológico mixto.

 

Para ello, se rastrearon experiencias de participación política de adolescentes mediadas por el uso de las narrativas transmedia en Colombia. Además, se diseñó una metodología de etnografía transmedia a fin de fomentar la participación y el pensamiento político-crítico en adolescentes. Además, en tercer lugar, se comenzó a estructurar la arquitectura base del ARG, a partir de los hallazgos obtenidos en los pasos anteriores. Ahora se está en el la construcción conjunta del ARG con un grupo específico de adolescentes.
Poliretazo para los tejedores de memoria
Authors: Barón Mireya , García Lizeth , Ramos Ángela
Published: July 2021

La ponencia da a conocer los resultados parciales del proyecto de investigación aplicada aprobado por convocatoria institucional IA2020-FSCC-CEC-86950.

Este proyecto de investigación creación se está desarrollando con la participación de tres programas: Comunicación Social-Periodismo, Diseño de Modas y Licenciatura en Ciencias Sociales. Desde esta mirada interdisciplinar se analiza la siguiente pregunta:

¿Cuáles son las narrativas de los diversos tipos de violencia que entreteje la comunidad presencial/virtual académica del Politécnico Grancolombiano a partir del TEJIDO COLECTIVO en unos objetos/acciones del recuerdo tales como el retazo, la escritura y la exposición galería que aporten al fortalecimiento de un SABER-HACER PARA LA PAZ.?

 

Del trabajo colegiado, de varias sesiones talleres ofrecidos por Asomujer y Trabajo y Unión de Costurero, del acompañamiento realizado por las investigadoras a los grupos de estudiantes de los programas coparticipes, se realizaron unos telares, con retazos de tela, hilos, agujas y pinturas para tela que narran desde las distintas percepciones, sensibilidades y experiencias, sus vivencias de paz después de las firmas del pos-acuerdo en Colombia.

La investigación se ubica en un referente conceptual como es el de los estudios culturales, de manera puntual, en los modos y usos colectivos de la memoria, en particular, en aquellos distanciados de las formas hegemónicas de transmisión de la historia, como lo explica Andreas Huyssen (2002),

Los invitamos a visualizar algunos avances de esta propuesta de tejido sociohistórico que nace del diálogo colectivo entre la comunidad grancolombiana y que atraviesa realidades del país como: Procesos de verdad y reconocimiento de las víctimas, Lugar de la memoria, Responsabilidad del Estado, Responsabilidad de la sociedad civil y el papel de la Educación en la circulación y la labor pedagógica de esas memorias
Prácticas de comunicación pública en entornos digitales y su incidencia en la construcción de una cultura participativa
Authors: Téllez Marcela F. , Ramírez Stefanía
Published: July 2021

La comunicación pública, entendida como un proceso en el cual las instituciones gubernamentales tienen la responsabilidad de propiciar que los sujetos se involucren en los temas públicos, se interesen por los espacios colectivos, y aporten en el devenir de la sociedad, es una práctica que viene tomando fuerza a nivel mundial durante las tres últimas décadas gracias a las posibilidades que brinda Internet.

Considerando que las organizaciones públicas colombianas cuentan con diversos canales digitales a través de los cuales se relacionan con la ciudadanía, cobra relevancia indagar sobre su desenvolvimiento en el ecosistema digital, es decir, si su presencia virtual incide en los procesos de interacción, intercambio de información, diálogo y toma de decisiones.

La investigación “Prácticas de comunicación pública en entornos digitales”, surgió en respuesta a la necesidad de comprender el alcance de la comunicación pública en el contexto colombiano y el interés que existe, o no, por promover la participación ciudadana. Para ello, se desarrolló un Estudio de caso en el que se aplicó el microanálisis de datos propuesto por la Teoría Fundamentada, y se analizaron 4.391 publicaciones digitales de seis gobernaciones del país, realizadas entre octubre y noviembre de 2019.

Los hallazgos evidenciaron una escasa aplicación de la comunicación pública, pues prevalece un ejercicio comunicativo tradicional, tendiente a posicionar la figura del gobernador, los funcionarios y la gobernación. No obstante, aquellas publicaciones que sí cumplieron con las premisas de este concepto evidenciaron tres aspectos: las gobernaciones reflejaron posturas y acciones concretas que promovieron la participación ciudadana; diversos actores sociales y en distintos escenarios habilitados por las gobernaciones llevaron a cabo prácticas de deliberación y toma de decisiones; las temáticas abordadas no se enmarcaron en una tendencia en particular.
VAE productos creativos simbólicos e intangibles
Authors: Morales Alexander
Published: July 2021

Se dio a la tarea de crear una sociedad de emprendimiento creativo que contribuyera a la formación, fortalecimiento y desarrollo de proyectos inter y transdisciplinares dentro del programa de Artes de la Escena, cuyo objeto intangible fuera identificar las tensiones generadas por las denominadas industrias creativas en el sector de las artes. A través de siete líneas de proyección: 1. Programa AE. 2. Programación cultural. 3. Talleres expandidos. 4. Residencias artísticas. 5. VAE Digital. 6. Galería. 7. Gestores externos; se buscó cumplir con los planes de interacción artísticos y económicos trazados por una directriz común: materialización, rematerialización, metamaterialización.

Como propósito introductorio se fundamentó que el ejercicio artístico es el de problematizar la realidad a la cual se confronta el individuo para establecer acciones y reflexiones en el momento histórico que protagoniza.

La presente propuesta es parte de esa intención en donde se conectan los nuevos ciclos de creación y producción artística con lo intermedial y lo digital para hacer frente a la realidad disruptiva propiciada por el SARS-COV-2. 

Conectamos esta disruptividad al criterio de eficiencia entendida como el grado en que se cumplen los objetivos de una iniciativa al menor costo posible. “No todo costo corresponde directamente a una expresión en unidades monetarias. Un costo representa el desgaste o el sacrificio de un recurso, tangible o intangible” (Mokate, 2001). Con este criterio se buscó medir el posible impacto de las actividades de este ejercicio y sus capacidades de sostenibilidad y viabilidad.
Cine Club La Moviola
Authors: Romero Baltodano Andrés , Toro Catalina
Published: July 2021

Este proyecto de investigación y de divulgación cultural, tiene como problema de investigación: cómo relacionar desde el cine visto como imagen en movimiento la crítica, el pensamiento y la memoria y como objetivos la Investigación y difusión desde el cine como punto de encuentro de la imagen en movimiento, la crítica, el pensamiento y la memoria; contribuyendo a la formación de públicos y la dinamización y debate de las ideas.

Su enfoque y diseño metodológico se basan en que, a partir de la investigación, recuperación y descubrimiento de artistas de todas las disciplinas, el proyecto se nutre para con una metodología de permanencia y trabajo sistemático desde todas sus vertientes, lograr la difusión del arte como eje del pensamiento.

Algunos de los referentes conceptuales del proyecto Cine Club La moviola memoria, pensamiento, crítica y autoría en la imagen en movimiento son:

. Movimientos cineclubistas en el mundo.

. Cinetecas, filmotecas, cinematecas del mundo.

. Revistas de arte y cine del mundo.

. Cine y televisión de autor a lo largo de la historia y de todos los puntos del planeta.

El impacto del proyecto siempre ha sido y continúa siendo la labor de difusión y formación de públicos se ha ido extendiendo del programa académico de origen hacia las escuelas, facultades, docentes y la comunidad virtual a lo largo de sus 14 años de existencia.

El proyecto desde su inicio ha sido dirigido y curado por Andrés Romero Baltodano y se expande además de la curaduría y exhibición semestral de películas, a la Revista Alternativa Multicultural La Moviola, que llega en el 2021 al número 113; la producción de cápsulas audiovisuales sobre fotógrafos e ilustradores, podcasts radiales y un servicio de asesoría cinematográfica a docentes de otras disciplinas.