Extension of gage calibration study in extreme high vacuum /orbitron and magnetron studies/

Orbitron and magnetron studies for gauge calibration in extreme high vacuu

Audio Tactile Maps (ATM) System for the Exploration of Digital Heritage Buildings by Visually-impaired Individuals - First Prototype and Preliminary Evaluation

P.I. Dr. Lorenzo Piccinali, Faculty of Technology, DMUNavigation within historic spaces requires analysis of a variety of acoustic, proprioceptive and tactile cues; a task that is well-developed in many visually-impaired individuals but for which sighted individuals rely almost entirely on vision. For the visually-impaired, the creation of a cognitive map of a space can be a long process for which the individual may repeat various paths numerous times. While this action is typically performed by the individual on-site, it is of some interest to investigate to what degree this task can be performed off-site using a virtual simulator. We propose a tactile map navigation system with interactive auditory display. The system is based on a paper tactile map upon which the user’s hands are tracked. Audio feedback provides; (i) information on user-selected map features, (ii) dynamic navigation information as the hand is moved, (iii) guidance on how to reach the location of one hand (arrival point) from the location of the other hand (departure point) and (iv) additional interactive 3D-audio cues useful for navigation. This paper presents an overview of the initial technical development stage, reporting observations from preliminary evaluations with a blind individual. The system will be beneficial to visually impaired visitors to heritage sites; we describe one such site which is being used to further assess our prototype

The sturgeon falls paleosol and the composition of the atmosphere 1.1 Ga BP

A paleosol is exposed along the north bank of the Sturgeon River, some 25 km SW of Baraga, Michigan. The paleosol was developed on hydrothermally altered Keweenawan basalt and is overlain by the Jacobsville sandstone. Textures, mineralogy, and chemical composition change gradually upwards from unweathered metabasalt, through the paleosol, to the contact of the paleosol with the Jacobsville sandstone. Many of these changes are similar to those in modern soils developed on basaltic rocks. However, K has clearly been added to the paleosol, probably by solutions which had equilibrated with K-feldspar in the Jacobsville sandstone. The Keweenawan basalt was oxidized quite extensively during its conversion to greenstone. During weathering, the remaining Fe was oxidized to Fe and was retained in the paleosol. The composition of the parent greenstone and its change during weathering can be used to define an approximate lower limit to the ratio of the O pressure to the CO pressure in the atmosphere during the formation of the paleosol P P >0.04 . Free O must have been present in the atmosphere 1.1 Ga ago, but its partial pressure could have been 10 times lower than in the atmosphere today

Research structures and the “web of prevention”: ethical implications for insufficient environments

Journal articleThe dual-use potential of scientific research refers to the possibility that any beneficial scientific research may be misused for nefarious purposes by a third party. This potential within the life sciences has led to much discussion regarding ways to raise awareness and limit possible harm. The concept of a “web of prevention” as a multifaceted system for dealing this potential provides a comprehensive method of conceptualising a system of controls in the life sciences. The “web of prevention” involves multiple stakeholders, from diverse backgrounds such as science, public health, security studies and governance.Wellcome Trus