Paisaje y territorio: revisitando conceptos a partir de las transformaciones del paisaje pampeano argentino

El presente trabajo se propone revisar, desde la perspectiva de los estudios territoriales, los conceptos de paisaje y territorio. Estos términos resultan componentes complejos, polisémicos, transdisciplinares y son abordados desde diversas miradas a través de la historia.Desde esta perspectiva, se propone interpelar la noción de paisaje rural, para lo cual se toma como caso de estudioal territorio pampeano del sur de la provincia de Santa Fe, Argentina. Se considera que dicho paisaje, a pesar de las diversas transformaciones y cambios a lo que es sometido desde su conformación hasta la actualidad, presenta permanencias que nos conducen a reflexionar sobre la identidad del territorio y su utilidad como herramienta para enriquecer los instrumentos de ordenamiento territorial contemporáneos. Es así que se pretende contribuir al conocimiento teórico y metodológico de los estudios territoriales a fin de desarrollar nuevas herramientas cognoscitivas y de intervención territorial.The present work intends to review, from the perspective of territorial studies, the concepts of landscape and territory. These terms are complex, polysemic, transdisciplinary components and are approached from various perspectives throughout history. From this perspective, it is proposed to address the notion of rural landscape, for which the case is taken as the case of Pampas territory in the south of the province of Santa Fe, Argentina. This landscape, despite the various transformations and changes to what is submitted from its formation to the present,registerpermanencies that lead us to reflect on the identity of the territory and its usefulness as a tool to enrich the instruments of contemporary territorial ordering. It is thus intended to contribute to the theoretical and methodological knowledge of territorial studies, to develop new cognitive and territorial interventiontools

Determinants of the Level of Revenue of Tourist Enterprises within the North Coastal Region of Kenya

Revenue of produced goods and/or provided services is determined by the volume of sales, prices of particular products, variety of products, ways of invoicing and period of payment. The current study was carried out at the north coastal region among tourist enterprises to establish factors that influence the amount of revenue they generate per year. The target population involved all enterprises relying on tourists for their business. They include hotel accommodation facilities, curio shops and tour companies. Simple random sampling technique was used to select a final sample of 97 enterprises, whose owners were given self administered questionnaires. Afterwards a regression on determinants of revenue by tourist enterprises was expressed as Y= ?o + ?1X1+ ?2X2+ …?n Xn+ ?; Where: Y – is the dependant variable; X1-n – are the independent variables; ?0 – is the constant ?1-n – are the regression coefficients or change induced in Y by each X,         while ? is the error. The results indicated that the net monthly income of enterprises was determined by the age of the enterprise (? = 0.169, p = 0.001), the location of the business (? = 0.149, p = 0.038) and the number of employees within the enterprise (? = 0.703, p < 0.0005). Therefore findings indicated that the main determinants of revenue for tourist enterprises at Kenya’s north coast were the age of the business, business location and the number of employees. Keywords: Tourist enterprises; Determinants of revenue; Firm; Tourist expenditure

Quality of life in patients with dysphagia after radiation and chemotherapy treatment for head and neck tumors

Objective: The aim of this study is to analyze subjectively, using the SWAL-QOL questionnaire, swallowing dys function and associated factors after treatment with radiotherapy and chemotherapy in patients treated for head and neck cancer. Material and Methods: This is a cross-sectional study, based on the selection of patients with tumors of the head and neck area, treated with radiotherapy with or without chemotherapy during the years 2000 to 2006 at the Oncology Institute of Juiz de Fora. The data were analyzed using SPSS 15.0 software, and were evaluated using the chisquare test to compare differences in proportions between groups. The statistical significance level was set at 5%. Results: It was observed that with respect to foods of solid consistency, there was a statistically significant difference for mouth tumors (p<0.01), with a tendency in this group to use softer foods, easier to chew (stews, boiled vegtables, creamy soups, canned fruit). With reference to the domains of the SWAL-QOL, the location of the tumor in the mouth was statistically associated with the lowest quality of life in the symptoms domain (p<0.05). The female gender variable was associated with the lowest perceived quality of life in several domains, namely swallowing (p=0.02); fatigue (p=0.008); symptoms (p=0.009). Age (split below and above 60 years) was not associated with differences in perceived quality of life in any domain. Conclusion: Tumor in the mouth and the total dose of radiation in the superior fossa were associated with the lowest quality of life in the symptoms domain. The female gender variable was associated with the lowest perceived quality of life in several domains This study shows that speech therapy should maintain a presence in the teams, to then guide the rehabilitation of organic dysphonia and mechanical dysphagia possibly afflicting patients after cancer treatment with radiation therapy and chemotherapy

Actividades centradas en el aprendizaje del alumno. El caso de álgebra superior

El presente trabajo muestra una experiencia en el aula, a través de un ejemplo de una de las actividades que se implementaron en el curso de álgebra superior II, que se imparte en la Facultad de matemáticas de la Universidad Autónoma de Yucatán (UADY). La intención de dichas actividades es proporcionar una manera diferente de enseñar enfocándose en el aprendizaje del alumno. Se concluirá con algunas reflexiones al respecto

High levels of cyclic-di-GMP in plant-associated Pseudomonas correlate with evasion of plant immunity

Summary: The plant innate immune system employs plasma membrane‐localized receptors that specifically perceive pathogen/microbe‐associated molecular patterns (PAMPs/MAMPs). This induces a defence response called pattern‐triggered immunity (PTI) to fend off pathogen attack. Commensal bacteria are also exposed to potential immune recognition and must employ strategies to evade and/or suppress PTI to successfully colonize the plant. During plant infection, the flagellum has an ambiguous role, acting as both a virulence factor and also as a potent immunogen as a result of the recognition of its main building block, flagellin, by the plant pattern recognition receptors (PRRs), including FLAGELLIN SENSING2 (FLS2). Therefore, strict control of flagella synthesis is especially important for plant‐associated bacteria. Here, we show that cyclic‐di‐GMP [bis‐(3′‐5′)‐cyclic di‐guanosine monophosphate], a central regulator of bacterial lifestyle, is involved in the evasion of PTI. Elevated cyclic‐di‐GMP levels in the pathogen Pseudomonas syringae pv. tomato (Pto) DC3000, the opportunist P. aeruginosa PAO1 and the commensal P. protegens Pf‐5 inhibit flagellin synthesis and help the bacteria to evade FLS2‐mediated signalling in Nicotiana benthamiana and Arabidopsis thaliana. Despite this, high cellular cyclic‐di‐GMP concentrations were shown to drastically reduce the virulence of Pto DC3000 during plant infection. We propose that this is a result of reduced flagellar motility and/or additional pleiotropic effects of cyclic‐di‐GMP signalling on bacterial behaviour

Lessons to Build an Educational Model for Higher Education Institutions Defined as Anchor Institutions to Tackle Public Health Crises: A Pilot Study on COVID-19 Vaccine Hesitancy Among Faculty and Students in Herbert L. College in the Bronx, NY

Coronavirus disease 2019 exacerbated health inequities in Bronx Communities. This study explored vaccine hesitancy among a random sample of faculty and students from Herbert Lehman College. Findings suggest faculty are largely vaccinated (87%), while 59% of students are unvaccinated. Significant gaps in information were found related to safety and complications. This suggests universities need to adopt an educational model with a multipronged social support strategy to gain students’ trust and a greater sense of belonging