Comparative evaluation of protective coatings and focused ion beam chemical vapor deposition processes

Dual-beam instruments incorporate both an electron column and an ion column into a single instrument, and therefore allow the chemical vapor deposition (CVD) process to be either ion- or electron-beam assisted. Damage has been observed in the surface layers of specimens in which ion-beam assisted CVD processes have been employed. Cross-section transmission electron microscopy (TEM) has been used to compare (100) Si substrates on which Pt metal lines have been grown by ion- and electron-beam assisted CVD processes. The micrographs show that a 30 keV Ga+ ion beam, a 5 keV ion beam, and a 3 keV electron beam imparts 50 nm, 13 nm, and 3 nm of damage to the Si substrate, respectively. In addition, Au-Pd and Cr sputter coatings were evaluated for the prevention of ion-beam induced surface damage. TEM cross-section specimens revealed that Cr sputter coatings \u3e 30 nm in thickness are sufficient to protect the (100) Si surface from the 30 keV Ga+ ion beam while Au-Pd sputter coatings up to 70 nm in thickness may be discontinuous and, therefore, will not protect surface regions from ion beam damage. (C) 2002 American Vacuum Society

Needs of Direct Support Professionals to Support People With Intellectual Disabilities in Leading a Healthy Lifestyle

Background For a healthy lifestyle, people with moderate, severe, and profound intellectual disabilities living in residential facilities and/or participating in day activity centers are dependent on their direct support professionals. However, it is unclear what knowledge and skills these direct support professionals require to support these individuals in living a healthy lifestyle. Therefore, the aim of this study was to identify the needs of direct support professionals for supporting these people with moderate to profound intellectual disabilities to achieve and maintain a healthy lifestyle. Method Direct support professionals (n = 28) were interviewed with the use of a semi-structured protocol based on the theoretical domains framework. The interviews were analyzed with a theory-driven content analysis. Results The most frequently mentioned needs referred to the following domains of the theoretical domains framework: environmental context and resources (n = 27), social/professional role and identity (n = 25), social influence (n = 25), skills (n = 24), and knowledge (n = 23). Conclusion To support people with moderate to profound intellectual disabilities in leading a healthy lifestyle, direct support professionals (DSPs) primarily needed support related to the domain environmental context and resources. Within this domain available time, dealing with different seasons, and a healthy lifestyle policy in the organization need attention. Development of interventions targeting these DSPs needs is required

Use of behaviour change techniques by direct support professionals to support healthy lifestyle behaviour for people with moderate to profound intellectual disabilities

Background Behaviour change techniques (BCTs) can be employed to support a healthy lifestyle for people with intellectual disabilities. The aim of this study is to determine whether and which BCTs are used by direct support professionals (DSPs) for supporting healthy lifestyle behaviour of people with moderate to profound intellectual disabilities. Method Direct support professionals (n = 18) were observed in their daily work using audio-visual recordings. To code BCTs, the Coventry Aberdeen London Refined (CALO-RE-NL) taxonomy was employed. Results Direct support professionals used 33 BCTs out of 42. The most used BCTs were as follows: 'feedback on performance', 'instructions on how to perform the behaviour', 'doing together', 'rewards on successful behaviour', 'reward effort towards behaviour', 'DSP changes environment', 'graded tasks', 'prompt practice' and 'model/demonstrate behaviour'. Conclusions Although a variety of BCTs is used by DSPs in their support of people with moderate to profound intellectual disabilities when facilitating healthy lifestyle behaviour, they rely on nine of them

Society for immunotherapy of cancer (SITC) statement on the proposed changes to the common rule

The Common Rule is a set of ethical principles that provide guidance on the management of human subjects taking part in biomedical and behavioral research in the United States. The elements of the Common Rule were initially developed in 1981 following a revision of the Declaration of Helsinki in 1975. Most academic facilities follow the Common Rule in the regulation of clinical trials research. Recently, the government has suggested a revision of the Common Rule to include more contemporary and streamlined oversight of clinical research. In this commentary, the leadership of the Society for Immunotherapy of Cancer (SITC) provides their opinion on this plan. While the Society recognizes the considerable contribution of clinical research in supporting progress in tumor immunotherapy and supports the need for revisions to the Common Rule, there is also some concern over certain elements which may restrict access to biospecimens and clinical data at a time when high throughput technologies, computational biology and assay standardization is allowing major advances in understanding cancer biology and providing potential predictive biomarkers of immunotherapy response. The Society values its professional commitment to patients for improving clinical outcomes with tumor immunotherapy and supports continued discussion with all stakeholders before implementing changes to the Common Rule in order to ensure maximal patient protections while promoting continued clinical research at this historic time in cancer research