Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

The need to increase and improve urban green has become a strategy for sustainable urban development; and in Peru there are no specific studies, nor adequate plans and projects that comprehensively contemplate the full potential of tree species in the urban space. Therefore, the objective was to propose a guide for the design of travel and stay spaces for Arróspide Park, located in Ate, a district of the metropolitan city of Lima, Peru and based on the physiological, ergonomic and psychological contributions of existing urban trees to benefit their habitability in a neighborhood public space. With a biocentric perspective, the morphological characteristics of the tree species were identified, the climatic conditions related to the thermal comfort of the people were measured and the physical restrictions of the park were analyzed. Finally, the results were contrasted with the theoretical framework based on the evaluation of public spaces and green spaces according to the Urban Ecology Agency of Barcelona, the principles of tree selection proposed by Trees & Design Action Group and the water-sensitive approach in the Green space design. After a comparison of tree species, 5 tree species: Tipa, Molle costeño, Jacaranda, Molle serrano and Melia were identified that, due to their morphological characteristics, provide comfort, demand a little water consumption, control the low urban proportion of the park, provide shade in park routes and stays, and offer a colored landscape throughout the year; generating conditions for the improvement of the habitability of public space. Keywords: urban trees – neighborhood space – public space – habitability

This article is the product of academic research, personal reflections, professional experiences, and technical proposals of the author about the urban evolution of the city of Lima (Peru) in the period 1535 - 2020, the evolution of the urban planning of Lima Callao in the period 1949 - 2020, and about the sustainable urban development of the Lima Callao Megalopolis, Peru, with a view to the year 2050. In that perspective, the objective of this article is to make some reflections on the urban evolution of the city of Lima, from the "Colonial Lima" to the "Megalopolis Lima" in the period 1535 - 2020, and of the evolution of the urban planning of Lima Callao, in the period 1949 - 2020. Likewise, technical proposals were submitted to promote the planning of sustainable urban development of the Lima Callao Megalopolis, with a view to the Bicentennial of the Independence of Peru (2021), the 500th anniversary of the Spanish foundation of Lima (2035), and the second half of the 21st Century (2050); within the framework of the 2030 Agenda for Sustainable Development, the New Urban Agenda, and the National Reconstruction Plan with Changes. Keywords: Lima-Callao – megalopolis – sustainable urban development – urban planning

The objective of this article is to review the validity of modern myths related to the Amazon and analyze their impact on public policies linked to the conservation of the Amazon. Based on a specialized bibliographic review, an inventory of modern myths related to the Amazon is made and then a classification is made for an analytical approach. Subsequently, a synthetic approach is made. Taking into account these results, it is discussed how these myths permeate public policies, the thinking and actions of forestry professionals and others involved with forests. As conclusions, it has been possible to recognize that there are still myths related to the Amazon regarding the indigenous people, the forests and the relations between the Amazon and Society. These modern myths are intertwined in time and can be transformed. The myths can be conceived as a system in which interrelations between society-culture-nature are verified. In spite of the dizzying advance of science, several of the myths continue in force, while science itself is immersed in its own myths and paradigms and subjectivity is part of the process of knowledge construction. In addition the myths are sustained by other modern myths of economic character that give primacy to the economic growth and the effectiveness of the markets like great regulators of social life. At the base of the validity of the myths is the disjunctive ontology between society and nature. Therefore, it is not surprising that in public policies the existence of some of these myths can still be verified. Key words: Amazon, Conservation, Myths, Culture, Nature.

Newspapers are a way to disseminate information quickly and at a lower cost. Health professionals could have this means as a way to publicize the results of their research so that more people can access it. In this regard, the objective was to continue with the review of articles related to health in the newspaper El Comercio, Lima, Peru. This news can serve as a starting point for professionals and students in the field of health, to carry out scientific research. Keywords: diary – healthcare professionals – health sciences – scientific research – topic choice

The research presented shows a malacological survey of Cienfuegos' southern area, from “Rancho Luna” beach to the mouth of the “Arimao River”. The malacological studies ranged from January 2018 to December of the same year. During the research, eight biotopes were selected in the area to be studied, and the presence of 52 species of marine gastropods, belonging to seven orders and 16 families, where the Sorbeoconcha order has the highest number of species was found. The best represented families were Neritidae and Littorinidae, with eight species, respectively. Species present only in one of the sampling points were identifi ed, as is the case of Bulla striata (Bruguière, 1792); Smaragdia viridis (Linnaeus 1758), Supplanaxis nucleus (Bruguière, 1789), and Bursa cubaniana (d´Orbigny, 1842). Based on their identification and classification, a systematic list was made that includes various information; as, for example, distribution of the species, biotope where it was detected, and ecological data. For the development of the research, conventional methods for collecting mollusks were put into practice in close relationship with other theoretical and empirical methods. The two malacological collections were assembled for teaching and research purposes and an illustrated dichotomous key was made. It is concluded that the subject is appropriate for the treatment of Environmental Education and Sustainable Development and that the area constitutes an excellent polygon for carrying out field practices by students of the Bachelor of Education. Biology. Key words: Biotope – Cienfuegos – gastropods – molluscs – Rancho Luna

The research aimed to develop a motivation strategy to improve teachers' job performance at the secondary level of the Inmaculada Concepción educational institution, Chiclayo, Peru. To achieve this purpose, a study with a descriptive - purposeful design was carried out. For the collection of information, the instruments used were an Observation Guide that allowed immediate attention to the problem, as well as a structured job performance questionnaire consisting of 30 items, which was applied to 20 secondary level teachers; to determine the validity and reliability of the instrument, the Cronbach Alpha test was applied, where approval was obtained with 0.72. It was found that 20% of teachers have never fully developed the competencies required on campus, 40% indicate that they have never maintained the feeling of commitment to the educational organization. Regarding the institution's satisfaction within the institution, 55% have only sometimes felt satisfi ed in the workplace, and 35% have never achieved satisfaction. With the achievement of these results, the strategy was proposed, and the practical contribution organized in four stages was designed, containing the development of various activities, implementation of recognition programs, fraternal integration, the development plan of skills and interpersonal relationships, strengthening of leadership, promote job satisfaction and fellowship development, and implement the training program regarding the use of ICT in virtual education and teaching, becoming a fundamental topic in recent times. It is concluded that the teacher presents manifestations where they make the motivation deficient, which deserves a limitation for the achievement of their good work performance since the motivation is the impulse to actuate stimuli where it allows enhancing capacities and strengthening the personal and professional well-being of the teacher in the educational organization. Keywords: educational institution - job performance - motivation - strategy

The study describes the biotechnological process, a product of the hydrolyzed starch's fermentation using Saccharomyces cerevisiae Meyen ex E.C. Hansen as an enzyme agent. The behavior and speeds of the three intervening components (consumed substrate [Sc], product [P], and enzymatic agent [E]) were evaluated and was formulated the corresponding logistic models, independently, for each of the components and their subsequent application and analysis. Also, the saturation constant of the substrate [Km] was determined. The maximumconcentration for the enzyme reached a value of 9.80 g·L-1, and the reaction rate constants were 0.27 h-1, 0.20 h-1, and 0.22 h-1, for the concentrations of E, Sc, and P, respectively. The maximum speeds (and the optimal times) for the enzyme, substrate consumed, and product were 0.66 gL-1h-1 (6.80 h), 6.68 gL-1h-1 (11.50h), and 3,15 gL-1h-1 (11.40h), respectively. The saturation constant Km for the consumed substrate, both by the Lineweaver-Burk equation and graph, and the Monod graph and theory, reached the values of 12.44 g·L-1 and 11.50 g·L-1, respectively. It is concluded that the proposed biotechnological kinetic analysis of the hydrolyzed starch by S. cerevisiae is adequate. Keywords: biotechnology – fermentation – kinetics – logistics model – saturation constant

 An analysis of the main beliefs, myths, uses and other social and cultural manifestations of mollusks (snails, slugs and others) in Cuba is presented, based on ethnological work carried out in different locations on the island of Cuba, from the 2010, until 2020. In order to carry out the research, methods of sociocultural research, such as those at the theoretical and empirical level, were used in their dialectical interrelation, among which the following stand out: historical - logical, analytical - synthetic, inductive - deductive, all from the theoretical level, and from the empirical level, the interview and documentary analysis. More than 500 residents throughout the national territory were interviewed and the answers to the questions that the authors considered the most significant were chosen. The presence of snails at different levels of the social and cultural life of the Island of Cuba, gives mollusks an extraordinary importance. Key words: Cuba – mollusks – shells – slug – snails

This article is the product of academic research, personal reflections, professional experiences, and technical proposals of the Author about the urban plans of the Green Coast of Lima and Callao in the period 1960 - 2020, and about the sustainable urban development of the Green Coast of the Lima Callao Megalopolis with a view to the year 2050. In that perspective, the objective of this article is make some reflections about the urban plans of the Green Coast of Lima Callao in the period 1960 - 2020. Also, present technical proposals, in order to promote the planning and implementation of the sustainable urban development of the Green Coast of the Lima Callao Megalopolis, with a view to the Bicentennial of the Independence of Peru (2021), the 500th anniversary of the Spanish foundation of Lima (2035), and the second half of the 21st Century (2050); within the framework of the 2030 Agenda for Sustainable Development, the New Urban Agenda, and the Integral Plan for Reconstruction with Changes. Keywords:

The toxicity of mining drilling mud was evaluated based on the lethal effect and evasion in the terrestrial bioindicator Porcellio laevis (Latreille, 1804). The following treatments were considered: drilling mud, suspended phase of drilling mud and mining drilling fluid in acute toxicity tests and short evasion test. Toxicity tests did not show a lethal effect in drilling mud, in the suspended phase of drilling mud, and in mineral drilling fluid in P. laevis. In the evasion tests, considering uncontrolled humidity conditions, it was observed that there was a preference for P. laevis towards the land with the presence of drilling mud. However, considering controlled humidity conditions, the preference of P. laevis towards the muddy land was confirmed. The results of this investigation allow documenting a protocol to evaluate the toxicity of mining drilling muds and serve as a reference for future investigations in Peru. Key words: Porcellio laevis – toxicity – drilling mud – evasion test