Nursing diagnoses related to skin: operational definitions

OBJECTIVE: to validate the operational definitions of the defining characteristics and risk factors of the three NANDA International (NANDA-I) nursing diagnoses and to revise these diagnoses' definitions. METHOD: content validation of nursing diagnosis. 146 defining characteristics and risk factors were identified in the literature in Brazilian and international databases. This was followed by content validation of the definitions of these diagnoses (presented by NANDA-I) and of the operational definitions (developed by the researchers) of the defining characteristics and risk factors, carried out by six expert nurses, regarding relevance, clarity and comprehensiveness. RESULT: of the 146 defining characteristics and risk factors, 22 were considered redundant and were excluded. The experts proposed changing the definitions of the diagnoses of Impaired Tissue Integrity and Risk for Impaired Skin Integrity. It was possible to identify various defining characteristics and risk factors which are not present in the NANDA-I taxonomy but which are indicated in the literature. CONCLUSION: the process attained its objective of producing valid operational definitions for defining characteristics and risk factors, which will permit the undertaking of validation studies for these diagnoses. The study's contribution to advancing scientific knowledge consists in its presenting clearer operational definitions for these diagnoses and a higher number of defining characteristics and risk factors, which will assist the nurses in the identification and use of the same with greater accuracy in clinical practice.OBJETIVO: validar las definiciones operacionales de las características definidoras y factores de riesgo de los tres diagnósticos de enfermería relacionados a la piel de la NANDA International (NANDA-I) y revisar las definiciones de eses diagnósticos. MÉTODO: validación de contenido de diagnóstico de enfermería. Se identificaron 146 características definidoras y factores de riesgo en la literatura en las bases de datos nacionales e internacionales. Enseguida, se realizó la validación de contenido de las definiciones de estos diagnósticos, presentadas por la NANDA-I y de las definiciones operacionales, elaboradas por las investigadoras, de las características definidoras y factores de riesgo, por seis enfermeras expertas, en cuanto a la pertinencia, clareza y abarcamiento. RESULTADO: de las 146 características definidoras y factores de riesgo, 22 fueron considerados redundantes y excluidos. Los peritos propusieron alterar la definición de los diagnósticos de Integridad Tisular Dañada y Riesgo de Integridad de la Piel Dañada. Fue posible identificar varias características definidoras y factores de riesgo que no están presentes en la taxonomía de la NANDA-I, pero, que fueron apuntados por la literatura. CONCLUSIÓN: el proceso alcanzó el objetivo de producir definiciones operacionales válidas para características definidoras y factores de riesgo, lo que permitirá realizar estudios de validación de estos diagnósticos. La contribución del estudio para el avance del conocimiento científico consiste en presentar definiciones operacionales más claras de estos diagnósticos y un número mayor de características definidoras y factores de riesgo que podrá aportar con los enfermeros en la identificación y utilización de los mismos con mayor precisión en la práctica clínica.OBJETIVO: validar as definições operacionais das características definidoras e fatores de risco dos três diagnósticos de enfermagem, relacionados à pele, da NANDA International (NANDA-I), e revisar as definições desses diagnósticos. MÉTODO: validação de conteúdo de diagnóstico de enfermagem. Identificaram-se 146 características definidoras e fatores de risco na literatura, nas bases de dados nacionais e internacionais. Em seguida, realizou-se a validação de conteúdo das definições desses diagnósticos, apresentadas pela NANDA-I e das definições operacionais, elaboradas pelas pesquisadoras, das características definidoras e fatores de risco, por seis enfermeiras peritas, quanto à pertinência, clareza e abrangência. RESULTADOS: das 146 características definidoras e fatores de risco, 22 foram considerados redundantes e excluídos. Os peritos propuseram mudar a definição dos diagnósticos de Integridade Tissular Prejudicada e Risco de Integridade da Pele Prejudicada. Foi possível identificar várias características definidoras e fatores de risco que não estão presentes na taxonomia da NANDA-I, mas que foram apontados pela literatura. CONCLUSÃO: o processo atingiu o objetivo de produzir definições operacionais válidas para características definidoras e fatores de risco, o que permitirá realizar estudos de validação desses diagnósticos. A contribuição do estudo para o avanço do conhecimento científico consiste em apresentar definições operacionais mais claras desses diagnósticos e número maior de características definidoras e fatores de risco que poderão contribuir para que os enfermeiros identifiquem e se utilizem dos mesmos com maior acurácia na prática clínica

Membrane-mediated interactions

Interactions mediated by the cell membrane between inclusions, such as membrane proteins or antimicrobial peptides, play important roles in their biological activity. They also constitute a fascinating challenge for physicists, since they test the boundaries of our understanding of self-assembled lipid membranes, which are remarkable examples of two-dimensional complex fluids. Inclusions can couple to various degrees of freedom of the membrane, resulting in different types of interactions. In this chapter, we review the membrane-mediated interactions that arise from direct constraints imposed by inclusions on the shape of the membrane. These effects are generic and do not depend on specific chemical interactions. Hence, they can be studied using coarse-grained soft matter descriptions. We deal with long-range membrane-mediated interactions due to the constraints imposed by inclusions on membrane curvature and on its fluctuations. We also discuss the shorter-range interactions that arise from the constraints on membrane thickness imposed by inclusions presenting a hydrophobic mismatch with the membrane.Comment: 38 pages, 10 figures, pre-submission version. In: Bassereau P., Sens P. (eds) Physics of Biological Membranes. Springer, Cha

The Science Performance of JWST as Characterized in Commissioning

This paper characterizes the actual science performance of the James Webb Space Telescope (JWST), as determined from the six month commissioning period. We summarize the performance of the spacecraft, telescope, science instruments, and ground system, with an emphasis on differences from pre-launch expectations. Commissioning has made clear that JWST is fully capable of achieving the discoveries for which it was built. Moreover, almost across the board, the science performance of JWST is better than expected; in most cases, JWST will go deeper faster than expected. The telescope and instrument suite have demonstrated the sensitivity, stability, image quality, and spectral range that are necessary to transform our understanding of the cosmos through observations spanning from near-earth asteroids to the most distant galaxies

The James Webb Space Telescope Mission

Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least $4m$. With the support of their governments in the US, Europe, and Canada, 20,000 people realized that vision as the $6.5m$ James Webb Space Telescope. A generation of astronomers will celebrate their accomplishments for the life of the mission, potentially as long as 20 years, and beyond. This report and the scientific discoveries that follow are extended thank-you notes to the 20,000 team members. The telescope is working perfectly, with much better image quality than expected. In this and accompanying papers, we give a brief history, describe the observatory, outline its objectives and current observing program, and discuss the inventions and people who made it possible. We cite detailed reports on the design and the measured performance on orbit.Comment: Accepted by PASP for the special issue on The James Webb Space Telescope Overview, 29 pages, 4 figure