2,787 search results
Learning to change
OpenLearn Ireland

Learning to change

...thinking about making a significant change in your life, such as returning to study or taking a different direction at work? This album looks at the learning journey of three people who’ve changed their lives through learning, not only through formal education, but by a continuous process of lifelong learning. The four video tracks show you how to build on what you...
View audio Learning to change
Audio 22 mins
Diversity in religion: Islam
History & The Arts

Diversity in religion: Islam

...think is the Islamic teaching regarding sexual preference? As you think about this question, ask yourself where your ideas about this topic might have come from – from a newspaper or magazine article, a book, your social media feeds, or somewhere else? Activity 1 Watch this interview with Dr Shanon Shah and make a few notes about the main points. SHANON SHAH Talking...
View course Diversity in religion: Islam
Level 1: Introductory 1 hr
Language and thought: introducing representation
History & The Arts

Language and thought: introducing representation

...think it means, whatever that might be, or does what you say carry its own meaning, separate from your intentions in saying it? This free course, Language and thought: introducing representation, introduces you to the key questions about how meaning is conveyed in language...How does what you say come to mean something? Does what you say inherently represent what you, the...
View course Language and thought: introducing representation
Level 3: Advanced 20 hrs
How can mobile technology help underpin reproductive rights?
Health, Sports & Psychology

How can mobile technology help underpin reproductive rights?

...systems. Babatunde Osotimehin, executive director and under-secretary-general of the United Nations, tells SciDev.Net that governments and all partners in reproductive health need to provide information and access to voluntary family planning to all people of reproductive age. “These will enable both women and men to make informed decisions about their reproductive...
View article How can mobile technology help underpin reproductive rights?
Article 5 mins
CLA – Hitchiner process
Science, Maths & Technology

CLA – Hitchiner process

...systems, these include: aluminium-based alloys nickel-based alloys stainless steels cobalt-based alloy for surgical implants. The CLV process is used for vacuum cast alloys, to reduce contamination by reactive elements such as nickel-, cobalt- and titanium-based alloys. Design: Gates (6–12 mm in length) are removed at a rate of 600 per hour to an accuracy of ±0.012 mm....
View article CLA – Hitchiner process
Article 5 mins
Hot isostatic pressing (HIP)
Science, Maths & Technology

Hot isostatic pressing (HIP)

...systems will make process economical for a wider range of components. Pressures vary from 50 to 200 MPa, and temperatures up to 2000˚C with control to ±15˚C possible. Temperature depends on material, but should be high enough to cause diffusion-bonding and low enough to avoid any undesirable structural changes. Typical examples are Ti-6Al-4V, 900˚C; Al-7.5Si-0.5Mg,...
View article Hot isostatic pressing (HIP)
Article 5 mins
Cold isostatic pressing
Science, Maths & Technology

Cold isostatic pressing

...system. Depending on the size of the chamber, several bags can be loaded into the space available. This is a batch process and compaction cycle time varies between 2 and 5 min. Dry-bag technique. Flexible bag is “fixed” in the pressure vessel and powder is loaded into the bag(s) without the bag having to leave the pressure vessel. The dry-bag technique lends itself to...
View article Cold isostatic pressing
Article 5 mins
How lenses and mirrors work
Health, Sports & Psychology

How lenses and mirrors work

...systems. Converging (convex) lenses and converging (concave) mirrors each cause parallel rays of light to come together at the focal point, or focus, of the lens or mirror as shown below. In contrast, diverging (concave) lenses and diverging (convex) mirrors each cause parallel rays of light to spread out as if emanating from the focal point situated at a distance of one...
View article How lenses and mirrors work
Article 5 mins