15 documents found, page 1 of 2

Endoscopic Sleeve Gastroplasty as Facilitatorfor Renal Transplantation in Patie...

Introduction: Obesity is a major barrier to kidney transplantation, associated with increased perioperative complications and reduced graft survival. Traditional bariatric surgeries have shown effectiveness in weight reduction but present challenges in pharmacokinetics and nutritional status. Endoscopic sleeve gastroplasty has emerged as a less invasive alternative, potentially suitable as a bridge to renal tra...

Aging Characterization and Preliminary Exploration of Gel-Based Cleaning of Cel...

Cellulose acetate (CA) is a semi-synthetic polymer widely present in modern and contemporary collections, yet its conservation poses major challenges due to its chemical and physical instability. Hydrolytic degradation, acetic acid release, plasticizer loss, and embrittlement compromise both structure and surface, making cleaning particularly difficult. Conventional cleaning methods may cause abrasion, extract ...

Clinical Characteristics of Hemodialysis Patients from African Countries of Por...

Introduction: Africa contributes to <10% of the total renal replacement therapy (RRT) patients worldwide. Due to a co‐ operation protocol, Portugal provides RRT and CKD care to patients from some African Countries of Portuguese Official Language (ACPOL). The purpose of this analysis was to describe the clinical characteristics and outcomes of patients from ACPOL who integrated our hemodialysis (HD) program i...

In Memoriam: Ana Cristina Lemos (1964-2022)

Yellow Lake Pigments from Weld in Art: Investigating the Winsor & Newton 19th C...

Weld (Reseda luteola) was one of the main sources of yellow dyes used for dyeing textiles and to prepare artists’ pigments in Europe until the 19th century. For the first time, this work explores the technology of preparing weld lake pigments in the 19th century by Winsor & Newton (W&N), a renowned supplier of artists’ materials. Five recipes were discovered in the W&N 19th century Archive Database and reconstr...

Supporting history of art with colorimetry: the paintings of Amadeo de Souza-Ca...

Colour is a key element in paintings but its quantitative analysis is seldom used as an interpretative element in the context of the history of art. Here, we show how this can be accomplished by measuring and analyzing the colours of the paintings of the influential Portuguese painter Amadeo de Souza-Cardoso (1887-1918). His last paintings have been classified by arthistoriansasthe mostsuccessful andareconsider...

O uso de um código comum de cores em mapas militares pelos impérios coloniais f...

This text presents bibliographical evidences of the existence and scope of a common color code used on military map-making in three colonial empires from the late 1600s. Apparently deriving from Gautier’s treaty (1687), a set of chromatic standards was used in order to unify the representation of reality in either descriptive or normative documents, and both in metropolis and colonies. In the lusophone world, i...

Features combination for art authentication studies: brushstroke and materials ...

This work presents a tool to support authentication studies of paintings attributed to the modernist Portuguese artist Amadeo de Souza-Cardoso (1887-1918). The strategy adopted was to quantify and combine the information extracted from the analysis of the brushstroke with information on the pigments present in the paintings. The brushstroke analysis was performed combining Gabor filter and Scale Invariant Featu...

Through the eyes of Science and Art

ThecollectionofmanuscriptsfromthemonasteryofAlcobaçaisoneof themostimportantintheCistercianworld.Thescriptoriumwasactive from the end of the twelfth to the sixteenth century, and during the end of the thirteenth and the beginning of the fourteenth centuries, transformations both in the materials used for colour and in style, namely historiated and filigreed initials, occurred. In this paper, through the study o...

Sistema de proteção da propriedade industrial como condicionante da inovação se...

Partindo do pressuposto que a noção de propriedade é um conceito social com um fim organizador das atividades humanas, logo cultural e intercultural, submetida a um enquadramento legal, cuja fundamentação é de âmbito económico, aqui abordaremos como essa concepção condiciona a inovação. São as estratégias defensivas, das vias internacionais de proteção das invenções e das patentes que regulam o uso e o acesso a...