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Resumen: El melanoma subungueal es un tumor poco común, con peor pronóstico comparado con los de otras localizaciones. Corresponde al 1-23% de los melanomas, según la población. El objetivo de este estudio fue describir las características clínicas e histopatológicas del melanoma subungueal en la población mexicana. Se incluyeron 57 pacientes con melanoma subungueal (19% de los 303 melanomas totales), con una mediana de edad de 71 años. La localización predominante fueron los miembros inferiores (52,6% de los melanomas subungueales) y el primer dedo (75,4% de los casos). El subtipo histológico más frecuente fue el acral lentiginoso (50,9%). La mediana de Breslow fue de 3 mm. El estadio IA fue el más frecuente (28,1%). Se encontró una tasa de recurrencia del 19,3% y de metástasis del 8,8%. Las características clínico-patológicas fueron semejantes a lo descrito en la literatura. Es importante realizar un diagnóstico y tratamiento tempranos de cara a mejorar su pronóstico. Abstract: Although subungual melanoma is uncommon, it is associated with worse outcomes than melanomas in other locations and accounts for 1% to 23% of all melanomas, depending on the population. The aim of this study was to describe the clinical and histopathologic features of subungual melanoma in a Mexican population. We identified 303 patients with melanoma, and of these, 19% (57 patients with a median age of 71 years) had subungual melanoma. The main sites affected were the lower limbs (52.6%) and the toe (75.4%). The most common histologic subtype was acral lentiginous melanoma (50.9%). Median Breslow thickness was 3 mm, and stage IA tumors were the most common (in 28.1% of patients). Recurrence and metastasis occurred in 19.3% and 8.8% of patients, respectively. The clinical and histopathologic features identified are similar to those described in the literature. Early diagnosis and treatment are crucial for improving prognosis.

La formación integral y competente del profesor de inglés en la Universidad de Pinar del Río "Hermanos Saíz Montes de Oca" presentaba limitaciones, al no trabajar de forma coherente y sistémica los contenidos de la identidad cultural caribeña, por lo que este trabajo tuvo como objetivo proponer un conjunto de acciones estratégicas pedagógico-didácticas para perfeccionar el proceso de formación de la identidad cultural caribeña en los profesores de inglés de la Universidad de Pinar del Río "Hermanos Saíz Montes de Oca". Se utilizó el paradigma dialéctico de investigación y un conjunto de métodos del nivel teórico (análisis-síntesis e inducción-deducción), del nivel empírico (análisis documental, entrevistas y grupos focales) y técnicas estadísticas descriptivas. Se realizó un diagnóstico preliminar del estado inicial de la formación de la identidad cultural caribeña del profesor de inglés de la Universidad de Pinar del Río "Hermanos Saíz Montes de Oca". Se presentó una fundamentación teórico-práctica relacionada con la formación de la identidad cultural caribeña, que sirvió para elaborar el conjunto de seis acciones estratégicas pedagógico-didácticas para perfeccionar este proceso. Las acciones de actualización, de rediseño, de trabajo metodológico, de capacitación y de evaluación se articularon de forma coherente y sistémica, lo que permitió la formación de la identidad cultural caribeña del profesor de inglés, de la universidad antes mencionada.

Although subungual melanoma is uncommon, it is associated with worse outcomes than melanomas in other locations and accounts for 1% to 23% of all melanomas, depending on the population. The aim of this study was to describe the clinical and histopathologic features of subungual melanoma in a Mexican population. We identified 303 patients with melanoma, and of these, 19% (57 patients with a median age of 71 years) had subungual melanoma. The main sites affected were the lower limbs (52.6%) and the toe (75.4%). The most common histologic subtype was acral lentiginous melanoma (50.9%). Median Breslow thickness was 3 mm, and stage IA tumors were the most common (in 28.1% of patients). Recurrence and metastasis occurred in 19.3% and 8.8% of patients, respectively. The clinical and histopathologic features identified are similar to those described in the literature. Early diagnosis and treatment are crucial for improving prognosis. Resumen: El melanoma subungueal es un tumor poco común, con peor pronóstico comparado con los de otras localizaciones. Corresponde al 1-23% de los melanomas, según la población. El objetivo de este estudio fue describir las características clínicas e histopatológicas del melanoma subungueal en la población mexicana. Se incluyeron 57 pacientes con melanoma subungueal (19% de los 303 melanomas totales), con una mediana de edad de 71 años. La localización predominante fueron los miembros inferiores (52,6% de los melanomas subungueales) y el primer dedo (75,4% de los casos). El subtipo histológico más frecuente fue el acral lentiginoso (50,9%). La mediana de Breslow fue de 3 mm. El estadio IA fue el más frecuente (28,1%). Se encontró una tasa de recurrencia del 19,3% y de metástasis del 8,8%. Las características clínico-patológicas fueron semejantes a lo descrito en la literatura. Es importante realizar un diagnóstico y tratamiento tempranos de cara a mejorar su pronóstico.

Circumscribed storiform collagenoma is a rare benign tumor. It appears as an isolated skin lesion or as part of the clinical spectrum of Cowden syndrome. The pathogenesis is still controversial. Although its clinical expression is heterogeneous, it has a characteristic histological pattern. We describe a case of a solitary circumscribed storiform collagenoma not associated with Cowden syndrome.

The vision on the relevance of higher education materialized in the projection towards sustainable development and the ability to respond to the demands and needs of the country is of particular importance. International experience indicates that the creation of capacities and, particularly, the training of human talent, is a key element for promoting sustainable development. So the objective of this article is to determine the trends that characterize postgraduate training, in particular, doctoral training and its impact on sustainable development, until the beginning of 2020. Methods such as documentary analysis, content analysis and analysis were used. complementary methods such as analysis, synthesis, deduction, induction, and comparative education. Among the most notable results were the essential changes in postgraduate and doctoral education, the challenges of postgraduate studies at the international level, especially in Latin America and the Caribbean, the generic competencies of postgraduate and doctoral training, the types of training programs doctoral studies and the characterization of doctoral training and its impact on sustainable development.

The internationalization of doctoral programs is a relatively recent phenomenon, where first world countries exhibit the best results in the training of graduates. This contrasts with the incipient results of the few developing countries that have implemented this policy, mainly due to lack of resources and experience. This work aims to establish a theoretical-practical framework for the process of internationalization of doctoral programs, in pursuit of improving the quality and relevance of the profile of its graduates. The research used the dialectical paradigm, for which theoretical and empirical methods were used, among which are: analysis and synthesis, induction and deduction, documentary analysis, and interviews with specialists who have lived experiences in this regard. The constructs internationalization, internationalization of postgraduate and research, and internationalization of doctoral programs were systematized, which made it possible to establish a theoretical-practical framework on the internationalization of doctoral programs. A set of strategic actions is offered that makes it possible to internationalize doctoral programs and, consequently, improve the quality and relevance of graduates.

Among its functions, the Center for the Study of Educational Sciences of Pinar del Río leads research in the field of university management, of students inserted in the training processes of the master and doctoral academic programs in Educational Sciences. The master and doctoral students presented inconsistencies in the theoretical systematizations, when addressing the research objects related to the management of university processes. In general, they focused in an atomized and unconnected way the contents of the management of the process they were researching. For the research carried out, the authors of this paper used a system of theoretical and empirical methods, namely: documentary analysis, scientific observation, interviews, analysis and synthesis, induction and deduction, which allowed them to fulfill the objective of approaching the management of university processes and their dimensions, which serves researchers as a guide for the elaboration of their starting theoretical frameworks. A theoretical foundation was presented as a result of the systematization carried out, which contributed to giving organization and coherence to the theoretical frameworks of the research related to the management of university processes. This work constitutes one of the results of the research project on the management of university processes at the University of Pinar del Río.

Despite the fact that educational management has evolved over time according to the needs and demands of its environment, context and processes, there are still dimensions that have been little investigated in university management. An insufficiently studied dimension is information management, as well as its respective scientific and technological information services. Based on this research gap, the present study aims to identify the interrelationships that exist between the dimensions of university management and the dimensions of information management, which influence the improvement of the different scientific and technological information services of a university. The research was based on the materialist dialectical method, and fundamentally applied the logical historical methods, analysis and synthesis, modeling together with the structural systemic method. As a result, the identification, characterization and graphic representation of the main interrelations that are manifested between the dimensions of university management and the dimensions of information management were obtained. Based on this, reference services were defined as the most relevant type of service for universities. Classifying them into: training services, information services and guidance services. Achieving in this way, the coherence of the information management with the university management for the strengthening of the substantive processes of a university, from the definition of services that involve both the administrative, managers, professors and students, as well as society and university environment.

The Movement of Amateurs Artists of the Federation Student University student constitutes a space for the invigoration of the cultural-integral formation of the future professionals, where the university student is able to be grown in the professional and cultural plane. The present work carries out an analysis on the historical evolution of the administration of this culture movement, in the University of Pinar de Rio"Hermanos Saiz Montes de Oca" , Where they are reflected the main moments for those for which it has trafficked. The article leaves of a study of the theoretical and contextual mark of the process of administration of this movement in the context of the University of Pinar del Río, "Hermanos Saíz Montes de Oca". The dialectical-materialistic method was good as starting point for the employment of other theoretical methods as the historical-logical one, the documental revision and the systematization. As main results systematization is presented on the evolution of the process of administration of the movement of amateur artists of the Federation Student University in Pinar del Río. Tendencies and essential premises are assumed from an integrative and systemic perspective, that contribute to the improvement of the administration of this extensionist sub process the main characteristic that differentiate it of other amateurs movements and their influence inside the formative process of the professional futures are analyzed.

The article addressed a topic of special importance for Technical and Professional Education, related to the training of scientific-investigative skills in the middle technician of the Social Work specialty. The essential objective was aimed at characterizing the process of scientific investigative skills training in students of the medium technical specialty in Social Work at the Rigoberto Fuentes Pérez de Pinar del Río Polytechnic Center. The research was explanatory with a retrospective ex post facto design and assumed an integral or dialectical approach. For the characterization, a group of empirical methods were used (study of documents, semi-structured interviews with teachers, observation of teaching activities and survey of students) that allowed obtaining the necessary information to give an answer to the problem posed in the referred school. The instruments were performed in a sequential manner, which allowed for multiple triangulation of sequential data. The results obtained allow to appreciate inadequacies in the formation of the scientific-investigative abilities in the students of the specialty half technician in Social Work, overalls in the integral conception of the process, due in a fundamental way for the lack of preparation of the educational ones and the insufficient methodological work integrated among all the subjects of the academic year.

The continuous improvement of the quality of professional training, aimed at sustainable local development, is one of the social tasks of the contemporary university. Consequently, Higher Education institutions need to diagnose the management of the training processes they develop. This article intends to offer a conception for the diagnosis of the management of the implementation of the "E" syllabuses, in the University of Pinar del Río "Hermanos Saíz Montes de Oca", that reassesses the sustainable local development in the initial professional formation and guarantees the real knowledge about this process with truthful and sufficient information, that allows redirecting it according to the fulfillment of the established purposes. The methods used were the documentary analysis and the Vigotskian methodology of the complex units of analysis that allowed to establish the main relations and components of this process. As a result, the study variable was defined and five dimensions were identified: institutional, administrative, pedagogical, community and methodological, with the corresponding indicators. The methods proposed for carrying out the diagnosis were documentary analysis, observation, survey, interview and pedagogical test to be measured with a two-level scale: satisfactory and unsatisfactory. This conception of the diagnosis of the management of the "E" syllabus is an effective tool to improve the quality of university professional formation in Cuba, which is particularly relevant in times when they demand curricular flexibility, essentiality of contents, self-learning and impact on local development with sustainability criteria.

This work addresses the improvement of the teaching-learning process of the analysis of phonetic changes in Spanish Phonetics and Phonology, with the aim of systematizing and contextualizing different theories and approaches for their didactic treatment in the Bachelor's Degree in Spanish-Literature Education. Research methods such as historical-logical, induction-deduction, analysis-synthesis and theoretical systematization were used to identify and order the information presented. The main results of this article are the systematization of different international and national didactic approaches, which allow establishing a coherent perspective for the analysis of phonetic changes based on pronunciation and phonetic correction in the mother tongue, in correspondence with the professional pedagogical mode of action.

Objective: To identify the teaching‐learning process characteristics of Oral Pathology and Medicine (OP&M) related to oral potentially malignant disorders (OPMDs) and oral cancer (OC), in the dental schools' curricula in Mexico, to analyze the approach given to this topic worldwide, and to provide the possible solution strategies. Materials and Methods: Questionnaires were sent to OP&M deans and professors from public Mexican Universities to explore the curriculum and academic profile of the dental schools. The recommendations gathered from a workshop with expert professors on the challenges in OPMD/OC teaching were reported. Results: Twenty‐two dental schools participated (22 deans, 30 professors). The most widely used strategies were clinical‐case resolving (86%) and presentations (73%). Although 77.3% of the programs included maxillofacial lesions, only 40.9% contemplated OPMD/OC. Only 45% of the programs developed community activities for early OC detection. The workshop recommendations were (i) multidisciplinary approach to OPMD/OC teaching, involving OP&M professors in other dental and nondental courses; (ii) implementation of the most effective teaching techniques (currently, problem‐based learning and clinical‐case presentation) in OP&M curricula; (iii) education of OP&M professors on teaching‐learning processes. Conclusions: These recommendations from the Mexican context, integrated with similar experiences from other countries could contribute to develop a unique, internationally acknowledged OP&M curriculum. [ABSTRACT FROM AUTHOR]

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The Sweet’s syndrome, is an inflammatory skin disorder characterized by extensive infiltration of neutrophils in the dermis with extension to the subcutis, known as acute febrile neutrophilic dermatosis. It may occur as a paraneoplastic syndrome. To our knowledge, there are currently few reports about transformation of a myelodysplastic syndrome to acute myeloid leukemia and concurrent necrotizing Sweet syndrome in the literature. Herein we describe an unusual case in a young patient with these characteristics that evolved to a fatal outcome.

Introduction: the main research results of the authors, about the study of pedagogical oral communication and the position that it occupies in the professional training are discussed. Objective: to analyze epistemologically the main theoretical elements defined that are addressed in the national and international literature on the oral pedagogical communication category and its importance in the context of the training of professionals. Method: a descriptive study was carried out from a bibliographic review and from the theoretical point of view the methods used were: historical-logical, analysis-synthesis and inductive-deductive, which allowed the analysis of concepts on the subject from different approaches. Development: in the work, relevant concepts and theories were systematized that take pedagogical oral communication into account in the communicative process, from the importance of communication as a universal human activity, which presupposes a set of knowledge, skills, values and attitudes that go beyond the linguistic components to establish and maintain effective communication in the professional field. Conclusion: the incorporation into the study curriculum of Higher Education was sought for their continuous attention; it is essential because it is so necessary for the success of the subjects in the interaction process in the different contexts of professional performance that allow the graduation of better prepared and truly competent professionals.

The article addressed a topic of special importance for Technical and Professional Education related to the training and development of the basic professional skill to measure. The essential objective was to establish the main characteristics of the development of this skill in the 1st year students of the Hydraulics specialty at the Pedro Tellez Valdés Polytechnic Center. The research was descriptive and assumed an integral or dialectical approach. For the characterization, a group of theoretical (historical and logical, analysis and synthesis and induction and deduction) and empirical methods (student survey, teacher interview, class observation and student performance) were used to obtain the necessary information to give an answer to the problem raised in the referred school. The results obtained from the determination of the characteristics allow to see its importance to efficiently direct the process of Technical and Professional Education in the studied specialty.

The present article presents a brief theoretical systematization of the fundamental constructsrelated with the formation process of the listening ability in English in the basic level, the state diagnostic of that process in the Bolivian Army Language School and its methodology for its potentiation. It has as objective to propose a methodology that potentiates the formation process of listening ability in English, in the basic level students of the Bolivian Army Language School. The investigative process was done under a dialectic conception, with the utilization of the model method, systemic-structural, hypothetical-deductive, analysis, synthesis,induction, deduction,documents analysis, pedagogic test, interviews and focal groups to systematize, to model, to characterize and to value the formation process mentionedbefore. As most significant conclusions, the formation process of the listening ability in English its conceive on a base of a developing didactic of foreign languages, for the professional formation; that the formation process of this ability in the school mentioned before its evaluated in the low scale, for the deficiency in the instructive, educative and developing contents, for the basic students and for an inefficient administration in the teaching process; As last, the methodology that is proposed will potentiate the formation process of the listening ability in English, in the basic level in the Bolivian Army Language School.

This study aimed at implementing a comprehensive strategy for the multiphysics simulation of the osmotic evaporation process applied in the concentration of passion fruit juice. The phenomena of mass and momentum transfer were analyzed in Comsol® and Matlab®, using a two-dimensional axial geometry as a simplification of the membrane module. Computer simulations were validated through comparisons with experimental data obtained from osmotic evaporation of passion fruit juice previously ultrafiltrated. The juice was concentrated to 52.25 ± 0.36 (°Brix) of soluble solids, reaching a final flux of 0.63 (kg/m2h) after 6 hours. The concentrate retained the organoleptic and physicochemical quality characteristics of the original juice when it was reconstituted in water. The models and simulations developed can be used to describe, analyze, and efficiently improve the osmotic evaporation process applied to the concentration of juices.

Osmotic evaporation is a modification of traditional processes using membranes; where the effect of a vapor pressure differential, produced by a highly concentrated solution of extraction, water is transferred as vapor through a membrane that acts as a hydrophobic body. This membrane technology is presented as a great alternative for processing exotic fruits, producing concentrates that can be used in the daily diet, being more comfortable to use, reducing transportation costs and increasing the shelf life. This process has many advantages compared to traditional operations, allowing operated at atmospheric pressure and low temperature, ideal for heat-sensitive products.

Byline: Francisco. Lira-Valero, Liliana. Godínez-Aldrete, Nancy. Pulido-Díaz, Marissa. Quintal-Ramírez A 70-year-old woman presented with a medical history of chronic myeloid leukaemia (CML) for 15 years; her early assessment showed a [...]

Context: Within the processing technologies with membranes, osmotic evaporation is a promising alternative for the transformation of exotic fruits, generating concentrated products that can be used in the daily diet, being easier to consume, reducing transportation costs and increasing shelf life. Method: In this research, it was studied and developed a comprehensive strategy for multiphysics modeling and simulation of mass and momentum transfer phenomena in the process of osmotic evaporation through Comsol® and Matlab® software. It was used an axial geometry approach in two dimensions as simplifications of real module and the finite element method for the numerical solution. The simulations were validated experimentally in an osmotic evaporation system of laboratory scale. Results: The models used and the generated simulations were statistically significant (p

Introduction: the training process in the pedagogical studies constitutes a priority of the Ministry of Higher Education, so that the training of a Biology-Chemistry professor is included into this purpose. Shortcomings in the management of this process result in the underdevelopment of professional skills for the graduates of this pedagogical specialty, having insufficiencies in their environmental education and in the conservation and care of the biological diversity. Objective: to provide a methodological alternative to enhance the teaching-learning process of Biology-Chemistry Professors, mainly from the teaching activities of biology subjects and fieldwork; making emphasis on the training of environmental conservation and the care of biological diversity, as well as. Method: the methodology responds to a dialectical conception, which is based on the dialectical-materialist method; which is supported on a system of methods from the theoretical and empirical levels. Results: a systematization of theoretical and practical aspects of the project method and problem-solving teaching is performed; responding to the teaching-learning process of biology subjects and the fieldwork from the beginning of the training process of Biology-Chemistry professors, focusing on environmental education and the care of the biodiversity. Conclusions: environmental training is an indivisible component of the comprehensive training of professionals in Cuban universities, so it is necessary to find the resources to achieve a higher level of motivation to search knowledge and to improve their professional performance.

This article evidence in detail, the different stages through which has passed the teaching of Labor Education and Information Technology, an analysis of docuemnts of the different curriculum with whom we worked and are currently working, the historical past of the development of reading comprehension skills in English as well as English for specific purpuse in the training of professionals in both profiles.

This paper presents some didactic guidelines about the formation process of a qualified worker in carpentry. The educational and professional process where the qualified worker in carpentry gets is preparation is characterized. This formative process is based on a developing didactics, as well as the recent studies and researches carried out by specialists of the Technical and Professional Education.

This article gives us a group of recommendations to solve some difficulties that the machine ring's professors at 1ro de mayo Polytechnic Institute have. At is related to their technical and professional fulfilling. Overcoming is the fundamental tool for the technical improvement of the machine ring specialty's.

Background: The diagnostic approaches and therapeutic strategies of atopic dermatitis (AD) are generally inconsistent among physicians and health institutions. Objective: To develop a consensus statement among experts to reduce the variations in practice regarding the diagnosis and treatment of patients ≥ 12 years with AD to improve their care. Methods: Systematic literature search in PubMed and GREAT. With methodological support and using the Delphi method, a formal consensus was developed among 16 experts in Dermatology and Allergology, based on the current evidence and its applicability in the Mexican context. Apart from intense electronic communication, several issues of disagreement were discussed in two face-to-face meetings. Results: The clinical experts reached consensus on 46 statements related to the definition, classification, diagnostic strategies and treatment of AD. For the diagnosis we suggest the Williams criteria and for severity scoring the SCORAD (by the doctor) and POEM (by the patient). In addition to general care and treatment education (workshops), we suggest four steps for treatment, depending on severity: 1. Topical treatment with anti-inflammatory agents (and systemic: antihistamines/antileukotrienes —low level evidence—) 2. Phototherapy, 3. Cyclosporin A and 4. Dupilumab, with the possibility of managing this biological earlier on if a fast effect is needed. In extrinsic AD we suggest evaluating the addition of allergen immunotherapy or an elimination diet, if there is an IgE-mediated respiratory or food allergy, respectively. Conclusion: The panel of experts reached consensus on relevant aspects of AD with a focus on the transcultural adaptation of recent evidence.

Nowadays, there is an emphasis on the use of qualitative meth ods in the educational research, what contradicts the research dialectical paradigm, which supports the qualitative and quantitative unity. The essence of the phenomena which are studied in the education and pedagogical sciences requires the use of qualita tive methods. The focus group method is an example of those methods that could be used to find and evaluate educational research variables, because of the opinions some members of a group can give. Finally, some suggestions to employ the focus group method are given for the educational research.

The Pha rmacology upgrading process to doctors in Medicine is intended to update their knowledge for the teaching learning - process, as they are part of pedagogical and educational groups. The upgrading process on Pharmacology prepares them for their two main funct ions: t he teaching and the medical care one s . Values are crucial in doctors ́ everyday work, because of their social work related to the use of drugs.

A criti cal study on the real situation about the construction of the theoretical and referential framework that is carried out during the specialty, master and doctorate thesis in the educational research is presented. Thus, a group of theoretical and methodologi cal considerations are stated to construct this framework, which may be useful to teachers and researchers involved in the postgraduate academic formation.

The combination of first‐row transition compounds or nanoparticles with silica‐based supports offers a great possibility for catalyst design. In particular, iron, cobalt and nickel‐based materials rise in attention due to their availability, low cost and interesting reactivity, enabling transformations that are not possible with noble metals. Different support strategies exist where mesoporous silica‐based supports are of particular interest due to their morphology and stability. Their high surface area, tunable pore size and volume and both, thermal and chemical stability, are of great interest in terms of catalyst adsorption and reactants diffusion. The state of the art on the catalyzed transformations to attain fine chemicals is nowadays explored from a sustainable point of view. However, up to now, it is difficult to predict or understand the key features in silica supported first‐row transition metals‐based catalyst, despite the fact that there are widely applied. The rational tailoring of nanosized materials immobilized on silica‐based supports and their application in catalysis requires to be reviewed. [ABSTRACT FROM AUTHOR]