uncleflo
Registered since September 28th, 2017
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Tag selected: conservation.
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Thread: engine rpm v propshaft rpm? - YBW
Saved by uncleflo on October 6th, 2019.
On a typical sailing boat with shaft drive, does the prop turn at engine rpm? Or is there a reduction? And when the prop freewheels while under sail, what would be a typical rpm? Presumably for a given boat speed (whether sail or power), the prop rpm will be less under sail than the rpm under power for the same boat speed, and presumably this ratio is closely linked to the propeller efficiency. I know on aeroplanes that prop efficiency is around 85% - is this a realistic figure for water-screws?
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oceanclassrooms.com
Saved by uncleflo on February 8th, 2015.
Ocean Classrooms (OC) believes strongly that the health of our ocean relies on the young, motivated ocean scientists of our future. These scientists not only thirst to learn more about the ocean through research, but also they need to engage the public in their research and its outcomes. In today’s world, the ability to deliver your message has never been easier, but it is also a crowded market that competes for public attention. Social media has narrowed the scientist-to-public divide. The savvy use of social media can help disseminate a science and conservation message efficiently and bring about effective change that protects and improves the health of our ocean. Moreover, young scientists have more challenges competing for limited research funding because of less experience. Consequently, OC is investing in a grant opportunity for early career marine science researchers to help fund their work and to help disseminate their research through social media, as well as through tradition
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Lightweight Concrete Thermal insulation - 1325ThorbjorgSaevarsdottir.pdf
Saved by uncleflo on February 8th, 2014.
Concrete, Conventional concrete is a poor insulating material but has good thermal mass. Lightweight concrete provides good insulation at the price of thermal mass. Precast concrete walls systems provide poor thermal and acoustic performance. Precast concrete can however provide high quality products which are easy to construct
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122R-02 Guide to Thermal Properties of Concrete and Masonry Systems - 122R_02.PDF
Saved by uncleflo on February 8th, 2014.
This guide reports data on the thermal properties of concrete and masonry constituents, masonry units, and systems of materials and products that form building components. This guide includes consideration of thermal mass of concrete and masonry, passive solar design, and procedures to limit condensation within assemblages.
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'Virtual diving' becomes a reality as 360-degree panoramas of Great Barrier Reef go online | Environment | The Guardian
Saved by uncleflo on August 22nd, 2012.
Armchair scuba divers across the world and marine conservationists will soon be able to immerse themselves in the most spectacular survey of the Great Barrier Reef ever undertaken, thanks to a new research project unveiled by conservationists and backed by Google on Thursday. Tens of thousands of 360-degree, high-definition panoramas of underwater forests, grasslands and crags will be taken by robot cameras, mapped and made available on the internet as a result of the collaboration, which will seek help from a global audience to assess the health and composition of the 2,300km-long reef.
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Triton Scuba | Environment | Op Wallacea | Triton Scuba
Saved by uncleflo on May 22nd, 2012.
Operation Wallacea is an organisation that operates biological and conservation management research programmes in remote locations across the world. In 2012/13 the expeditions are operating in 11 countries: Indonesia, Honduras, Egypt, Cuba, South Africa, Mozambique, Madagascar, Peru, Guyana, Romania, and Mexico. In order to help expedition members who are undertaking diving, we have put together some equipment packages that will ensure that you have the equipment you need to make the most out of your diving training and research. Op Wallacea requires all expedition members to have their own basic equipment and we have put together a package at an extremely low price. Not only that, but 10% of all profits made from the sale of equipment to Op Wallacea expedition members is given to Op Wallacea and helps towards funding conservation efforts in some way!
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OPERATION WALLACEA @ THE WATERSPORTSWAREHOUSE.CO.UK - Watersports Warehouse
Saved by uncleflo on May 22nd, 2012.
We've been asked by Operation Wallacea to put together some suggestions based on their minimum recommended equipment for your Wallacea expedition/destination in mind, but don't be afraid to ask if you can't find what you think you need - do please phone. 01736 751066
Many items are sold below the rrp's and if you select a 'package' item you are saving more
AND by using your Special Offer Discount Voucher Code issued to you by
Operation Wallacea at the check-out you can
SAVE EVEN MORE.
We are one of the UK's leading retailers of PADI, Mares, Cressi, Tusa and Sunnto Dive equipment and are authorised stockists for all we sell - and we have in excess of 20 years diving experience.
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