ABSTRACT
Tendo como mote a comemoração dos 15 anos do "Sport: Laboratório de História do Esporte e do Lazer", este ensaio objetiva discutir as peculiaridades de dinamização de um grupo de pesquisas numa situação periférica. De início, se debate o conceito de periferia para situar os desafios tanto de investigação quanto da constituição de um campo acadêmico. Posteriormente, apresentam-se algumas reflexões sobre os limites, possibilidades e potencialidade da inserção no cenário científico internacional. Por fim, conclui-se que assumir que, nos dias atuais, somos periféricos não significa aceitar que sempre seremos assim, tampouco que devamos almejar o centro. Sugere-se ser mais interessante perspectivar um mundo em que não mais se sustente a relação centro-periferia, algo que não pode se dar somente no terreno das ilusões discursivas que prescindem de uma profunda compreensão empírica.
Having as an incentive the celebration of the 15th anniversary of the "Sport: Laboratory of History of Sport and Leisure", this essay aims to discuss the peculiarities of the organization of a research group in a peripheral situation. At first, the concept of periphery is debated in order to situate the challenges of both research and the constitution of an academic field. Subsequently, some reflections on the limits, possibilities and potential of insertion in the international scientific scenario are presented. Finally, it is concluded that assuming that, today, we are peripheral does not mean accepting that we will always be like that, nor that we should aim at the center. It is suggested that it is more interesting to envisage a world in which the center-periphery relationship is no longer sustained, something that cannot happen only in the field of discursive illusions that do not require a deep empirical understanding.
Subject(s)
Leisure ActivitiesABSTRACT
BackgroundThe research of corneal thickness after pars plana vitrectomy in DM patient plays an important role not only theoretically but clinically.Objective Present study was to evaluate the change in corneal thickness after pars plana vitrectomy.Methods A prospective coherent study was designed.Seventy-five eyes of 70 consecutive diabetic retinopathy(DR) patients were collected in Tianjin Medical University Eye Center.Pentacam was used to assess the central and periphery corneal thickness by the same investigator preoperatively and 7 days,1 and 3 months postoperatively,respectively.The thickness values from five corneal zone were obtained,including cornea vertex,the thinnest point of the cornea,periphery cornea near the scleral incision of 4 mm away to vertex of cornea on vertical and 240°,120°,60° meridian ( right eye) or 300°,120°,60° meidian ( left eye ).These results were compared and analyzed with ANOVA of repeated measurement data.Subgroup analysis was performed to evaluate the influence of different corneal positions,the use of conventional 20g or 23g transconjunctival sutureless vitrectomy(TSV) groups,surgery duration,gas or fluid endotamponde on corneal thickness.This study was approved by Ethic Committee of this hospital.Written informed consent was obtained from the subjects before any relative medical procedure.Results The mean corneal thickness was ( 639.9 ± 103.1 ),( 689.5 ± 119.3 ),( 666.5 ±113.7),( 650.8 ± 108.6 ) μm before operation,postperative 7 days,1 and 3 months respectively.As covariates appearing in the model,the corneal thickness change rates were revised as the parameters as following: diabeitc duration =13.0 and age =57.2.The revised corneal thickness was significant different among various time points( F=210.928,P=0.000) and different corneal zones(F=24.843,P=0.000) with the size order in turn P4＞P3＞P1＞P2＞P5.The corneal thickness change rates were less in 23g TSV group compared with conventional 20-g group (F =53.843,P =0.000) and BSS tamponade group compared with gas tamponade group ( F =5.288,P =0.022).But no significant difference was found in the revised corneal thickness among surgery duration ＜ 1 hour group,1-2 hour group and ＞2 hour group( F=1.233,P =0.293).ConclusionsVitrectomy is a safe procedure on the ground of cornea,but TSV and fluid endotamponade appear to be more beneficial to the protection of cornea.Pentacam could offer the reliable data in not only central cornea but also periphery cornea.
ABSTRACT
En este trabajo se describe como las relaciones entre Venezuela, Argentina, Uruguay y México se vincularon a la construcción de una capacidad endógena del primero en el campo de la medicina veterinaria. La influencia de los países en cuestión ocurre en diversas etapas del crecimiento de la comunidad de veterinarios en Venezuela. El artículo expone una experiencia de como las relaciones científico-técnicas no siempre proceden según el esquema centro-periferia (sociedad desarrollada a periférica), sino que pone en evidencia la existencia de sociedades periféricas que pueden actuar como referentes o intermediarios para la transferencia de los saberes.
The bonds established by Venezuela from 1933 to 1955 with Argentina, Uruguay and Mexico formed the groundwork for the Venezuelan State's efforts to foster knowledge and skills in the field of veterinary medicine. The countries in question exerted an influence at different stages in the growth of the veterinary community in Venezuela. This study describes an experience of how scientific and technical ties are not always forged along center-periphery lines, showing that there are peripheral societies capable of operating as points of reference or intermediaries in the transfer of knowledge.