Enzyme-based treatments are used in heritage conservation for the effective removal of glues and other damaging organic layers from surfaces historic artistic works. Despite their potential, however, application enzymatic is currently limited because poor efficiency low operational environmental stability. We demonstrate use α-amylase immobilized on gold nanoparticles to improve efficacy enhancing both reactivity stability formulations. Gold coated with exhibit significant advantages...

Sexual harassment prevention within universities is a critical issue that influenced through the framing of institutional policies. This study employs feminist discourse analysis to examine construction sexual in policies 30 English universities. The focuses on how these describe power dynamics and impact harassment. findings reveal dominant line with Equality Act (Gov.uk, 2010) frames as against protected characteristic, limited attention role or image perpetrator. Alternative discourses...

The kinetics of the reduction NpO 2 2+ to + in nitric acid aqueous solution by formohydroxamic (FHA) were studied allow more accurate flow sheet modelling neptunium separation from uranium and plutonium an Advanced PUREX process. rate reaction was monitored using stopped-flow spectrophotometry with near-infrared detection. conditional M at 22°C could be described following equation: -d [NpO ]/dt = k ][FHA](M/s) 1.17×10 3 -1 s [H ] 2.0 M. Comparison other data available literature, indicates...

Nanolimes are the first nanomaterials used in heritage conservation for natural stone consolidation. Thanks to their size, they show good penetration depth into substrates, high reactivity resulting a faster carbonation process, and ability bridge cracks through formation of network calcium carbonate cement. Two commercial nanolimes, CaLoSiL (IBZ Salzchemie) Nanorestore (CSGI) dispersion Ca(OH)2 nanoparticles, synthesized by an anionic exchange were applied fresh naturally weathered...

The work presented illustrates the feasibility of using metal ion indicators to study various aspects complexation reactions. overall aim was develop a simple method for studying metal–ligand relevant environmental migration radionuclides. reaction Xylenol Orange with zinc(II) ions is investigated as model system, initially determining variation equilibrium constant ionic strength. data are used show validity Davies equation predict constants in systems where I<0.1 M. By introduction second...

Abstract The National Museum of Wales (NMW), houses ca 250 000 higher plant specimens, with material dating back to the 17th century. Herbaria have been a major source botanical research and reference for centuries collections increased over time from donations through collecting. Owing its organic content, is susceptible insect fungal attack. Even aged, dried sugar protein. Institutions collectors prevented such attacks application pesticides. Treatments containing compounds arsenic, lead...

A dynamic ultrasound-assisted extraction method using Atomic Absorption and Fluorescence spectrometers as detectors was developed to analyze mercury, arsenic, barium from herbarium mount paper originating the collection of National Museum Wales. The variables influencing were optimized by a multivariate approach. optimal conditions found be 1% HNO3 extractant solution used at flow rate 1 mL min−1. duty cycle amplitude ultrasonic probe 50% in both cases with an ultrasound power 400 W....

The need for a wider understanding of the interface between buildings and their uses can be demonstrated by various examples inappropriate adaptation. research described in this paper forms part an interdisciplinary project to develop predictive computer model which will simulate conditions within historic used library archive purposes. practical macro- micro-environments that have potential adversely affect paper-based collections housed buildings. By making use data collected from...

The work presented illustrates the feasibility of using radiotracers with size exclusion chromatography (SEC) as a means studying kinetics metal-ligand interactions in environmental systems. To simulate such systems pre-equilibrated Eu(III)-humic acid model system was chosen which 152mEu3+ radiotracer used to study isotopic exchange between Eu3+ and complexation.

LGBTQ+ scientists: UK-US inclusion in STEM Belinda Colston1, Abigail Powell1, Lauren Esposito2 and Arti Agrawal3 discuss the challenges for scientists landscape through an intersectional lens. The professions continue to be dominated by white, heterosexual men characterised a stereotypically masculine culture with expectation of heteronormative identity. exclusionary hostile environments often encountered science, technology, engineering mathematics (STEM) disciplines have persistently...

Purpose The current study explores the role of social psychological factors on organizational commitment. It examined relationships between fairness, inclusion, diversity, sexism, safety and affective Design/methodology/approach adopted a cross-sectional survey method where data were collected from staff across six higher education institutions in United Kingdom. A total 416 responses analyzed by employing independent sample t -tests to explore gender differences regarding mediating effects...

Abstract The current study explores how organizational dimensions relate to and impact commitment, comparing staff in academic positions with professional services roles. Data was collected from 281 294 within university environments who completed extensive questionnaires. Overall academics manifested lower levels of emotional attachment to, perceived obligation remain their university, felt less safe take interpersonal risks, speak up support for work-life balance than colleagues....