Cristian Valenzuela

Playa Ancha University · Departamento de Ciencias de la Documentación

Este artículo aborda la problemática de la alfabetización digital e informacional, relacionándola con la relevancia de la gobernanza electrónica y el impacto que esta tiene en las personas mayores. Para ello, se utilizó un enfoque cualitativo–descriptivo para el análisis de los datos sobre el impacto del programa. Como instrumento de análisis se op...

Introducción al dosier Introducción al dosier: Alfabetización en información. Tendencias, conocimientos y experiencias innovadoras en bibliotecas y otros espacios educativos y culturales: segunda parte

Introduction: Refractory cases of alopecia areata (AA) may be considered a therapeutic challenge. Intralesional methotrexate (IL-MTX) has been used in other dermatological diseases rather than AA. Likewise, its topical use as an immunosuppressant drug may be of interest for the control of the lymphoid infiltrate in AA. On the other hand, the use o...

Introducción al dossier: Alfabetización en información: tendencias, conocimientos y experiencias innovadoras en bibliotecas y otros espacios educativos y culturales

Este artículo busca vincular y actualizar la pedagogía informacional de Oscar Picardo Joao, como teoría del aprendizaje alternativa centrada en la información y en las TIC, con los planteamientos de la alfabetización en información y sus competencias internas dentro del contexto educativo actual. El análisis conceptual de los elementos que unen, po...

Este artículo analiza la adaptación, aplicación, comportamiento y análisis de cualidades psicométricas del instrumento Information Competency Assessment Instrument (ICAI), desarrollado por Rodney Marshall de la Eastern Illinois University (2006), a través de la aplicación sobre una muestra estratificada de estudiantes (n= 381) de los niveles superi...

Xanthoma disseminatum (XD) is a rare non-Langerhans cell histiocytosis that is characterized by the proliferation of histiocytic cells and secondary deposition of lipids in the dermis, which can affect people at any age. Men are more commonly affected than women.¹ Treating XD is challenging. We present a patient with XD with marked facial involveme...

El presente artículo plantea una reflexión teórica sobre el impacto de las competencias informacionales en la estructura interna de las ecologías del aprendizaje y de cómo éstas pueden influir en el desarrollo del proceso de enseñanza – aprendizaje y el conocimiento. Para lograr esto, se hizo una revisión previa de múltiples recursos académicos sob...

Coronavirus disease 2019 (COVID‐19), caused by severe acute respiratory syndrome‐related coronavirus 2 (SARS‐CoV‐2), was first reported in China on December 2019. Almost 5 months into the pandemic, little is still known about cutaneous manifestations in COVID‐19. In fact, the prevalence of cutaneous signs varies greatly in the literature, ranging f...

The differential diagnosis of photodistributed eruptions includes, among others, photoaggravated dermatoses and both systemic and contact photosensitive drug reactions, which might be of photoallergic or phototoxic nature. Consequently, dermatological evaluation must include identification of prior dermatoses and use of potentially photosensitizing...

Chlorpromazine is known to produce both systemic phototoxic and photoallergic reactions. However, it may also cause photoallergic contact dermatitis and, albeit exceptionally, allergic contact dermatitis (ACD). We present a series of photoallergic contact dermatitis and ACD to chlorpromazine diagnosed at a tertiary centre cutaneous allergy unit bet...

Background/objectives: Several studies have reported that non-alcoholic fatty liver disease (NAFLD) is more frequent in patients with psoriasis, but few have reviewed the presence of liver fibrosis in those patients. Methods: Cross-sectional cohort, single-centre study, continuously selecting all patients with moderate-severe psoriasis seen at t...

Dupilumab, a biologic drug approved for the treatment of moderate‐to‐severe atopic dermatitis, has been associated with resolution or improvement in pre‐existing alopecia areata. We report a case of significant improvement of AA after Dupilumab‐onset treatment for atopic dermatitis and review the literature.

Apocrine hidrocystoma is a rare, benign, cystic tumor of the apocrine sweat glands. They are most commonly located around the eyes and may also be found on the scalp and neck. However, despite the fact that the nipple and areola contain numerous apocrine sweet glands, apocrine hydrocystomas have not been described previously in this area to the bes...

Programmed cell death receptor 1 inhibitors (anti-PD-1) constitute a form of immunotherapy for the treatment of several cancers. They are associated with cutaneous immune-related adverse events (irAE), occurring in up to 50% of patients. Lichenoid dermatitis is frequent and several presentations have been described. Although attempts have been made...

Background: Since 2009, an increasing number of published cases of allergic contact dermatitis (ACD) from isothiazolinones in Europe was observed, amounting to an epidemic. However, there are few studies that have assessed the current situation after changes in European regulation. Objectives: To analyse the incidence of isothiazolinone ACD in o...

The differential diagnosis of Grover disease (GD) includes pemphigus foliaceus. However, the focal nature of the histologic findings and negative direct immunofluorescent point to the diagnosis of GD. It has been associated with a variety of systemic and cutaneous diseases, but its association with other primary acantholytic disorders has been rare...

Psoriasis is a chronic inflammatory disease affecting up to 2‐3% of the population worldwide¹. Genital psoriasis (GenPs) is a frequent, debilitating, stigmatizing and difficult‐to‐treat manifestation of plaque psoriasis. Literature is scarce on controlled trials dedicated to the management and effective treatment of this special localization². Alth...

Presentación del dossier: Software libre y código abierto: experiencias innovadoras en bibliotecas y centros de información.

Se muestran y explican con ejemplos prácticos las posibilidades de tratamiento de datos e información textual que tiene el lenguaje de formateo de WINISIS de UNESCO al manipular cadenas y subcadenas de caracteres alfanuméricas no estructuradas o semiestructuradas, línea por línea, o párrafo por párrafo, de longitud fija o variable, especialmente en...

RESUMEN Las quemaduras eléctricas pueden causar daños por mecanismos como quemaduras cutáneas por fuego del arco o ignición de la ropa, quemaduras tisulares profundas por flujo de corriente a lo largo de los huesos, lesión traumática concomitante y arritmia cardiaca [1], [2]. Las quemaduras eléctricas se clasifican en lesiones por alto voltaje (may...

La irrupción de la tecnología, en el marco de la sociedad del conocimiento, ha generado diversas consecuencias, entre ellas, la modificación de los diversos campos que constituyen la sociedad. El concepto clásico de biblioteca se tensiona con la aparición de términos como “virtual”, “electrónica” y “digital”, transformándose en una amenaza.El prese...

We describe the case of Facso, a database of the minutes and other documents of the Board of the Faculty of Social Sciences, which illustrates the integration of Unesco's WinIsis Database management system with Dropbox Acting as a "virtual hard disk" on the cloud. Various routing options are shown, even incorporating the old Ms-dos .bat executable...

We studied the microbial diversity and parts of the sulfur cycle in anoxic sediments at two marine observation stations of the FONDAP/COPAS research program on the Chilean upwelling system in Concepcion Bay (Station 7 and Station C1, 36° 36.5′ S; 73° W and 36° 31.747′ S; 72°57′ W respectively). DNA was extracted and purified from mud samples, so th...

En este artículo se presenta un análisis de la relación existente entre tecnologías y procesos de enseñanza - aprendizaje. Se da a conocer el uso e impacto del contraste existente entre aula tradicional y virtual y termina realizando una propuesta de método de enseñanza basada en la conceptualización del Just in case y del Just in time .

The present research is to focuse the view of researchers and librarians on the serials value as a resource for the knowledge generation and to give a background which permits to show its importance and the advantages and disavantages of a electronic publication and also the questions that emerge around the access and use of information and the cre...