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Free Download Mike Roussel, "Spitfire's Forgotten Designer"
English | ISBN: 0752487590 | 2013 | 360 pages | EPUB | 22 MB
Whenever the Spitfire is mentioned, the name of its famous designer R.J. Mitchell comes to mind. However, Mitchell died in June 1937 and never saw his prototype design progress into becoming one of the most famous fighter aircraft of the WWII. Working under Mitchell as chief draughtsman was Joe Smith, who was greatly involved with the early design of the Spitfire. After Mitchell's death, Smith first became manager of the design department and then chief designer. This illustrated book celebrates the inspirational and innovative work of Mitchell, Smith, and their successful design team. Including firsthand accounts of members of the design team and apprentices, it reveals a little-known but pivotal figure. Spitfire's Forgotten Designer resurrects and pays due respect to Smith's dedication, leadership, and the part he played in the development of the Spitfire and postwar jet aircraft.

Free Download Spiritual Guidebook: Mastering psychic development and healing techniques (Planners) by Anna Comerford
English | August 6, 2024 | ISBN: 1922785458 | 304 pages | PDF | 20 Mb
A comprehensive guide to understanding and mastering healing and psychic techniques. Tap into your intuition, heart and soul and be amazed at how your skills unfold and develop in surprising ways.

Free Download Speaking for Others: The Ethics of Informal Political Representation by Wendy Salkin
English | July 9, 2024 | ISBN: 0674238532 | True EPUB | 368 pages | 0.6 MB
A political philosopher dissects the duties and dilemmas of the unelected spokesperson, from Martin Luther King, Jr., to Greta Thunberg.

Free Download Speaking Out: The New Rules of Business Leadership Communication by Matthew Kohut
English | October 1, 2024 | ISBN: 1647124735 | 184 pages | PDF | 2.02 Mb
A new lens for understanding how to navigate political and social issues in business leadership communications

Free Download Speakers! The Quick Public Speaking to Business Method: Turning Your Talk into an Ongoing Revenue Stream by Ellen Finkelstein, Connie Ragen Green
English | January 9, 2021 | ISBN: N/A | ASIN: B08SLGQC8N | 208 pages | EPUB | 1.26 Mb
Learn how to write a signature speech that you can turn into an ongoing income stream. We cover writing the speech, finding places to speak, making an offer, creating an online business based on your public speaking, and much more.

Free Download Thomas P. Willis, "Sorbents: Properties, Materials and Applications "
English | ISBN: 1607418517 | 2009 | 405 pages | PDF | 9 MB
Sorbents are insoluble materials or mixtures of materials used to recover liquids through the mechanism of absorption, or adsorption, or both. Absorbents are materials that pick up and retain liquid distributed throughout its molecular structure causing the solid to swell. The absorbent must be at least 70 percent insoluble in excess fluid. Adsorbents are insoluble materials that are coated by a liquid on its surface, including pores and capillaries, without the solid swelling more than 50 percent in excess liquid. To be useful in combating oil spills, sorbents need to be both oleophilic (oil-attracting) and hydrophobic (water-repellent). Although they may be used as the sole cleanup method in small spills, sorbents are most often used to remove final traces of oil, or in areas that cannot be reached by skimmers. Any oil that is removed from sorbent materials must also be properly disposed of or recycled. This new book gathers the latest research in this field from around the world.

Free Download G. N. Tiwari, "Solar Energy Technology Advances"
English | ISBN: 1594546142 | 2005 | 138 pages | PDF | 4 MB
This book reviews recent advanced research work in the area of flat plate collectors, solar distillation, greenhouse technology for crop drying and production and solar electric/ thermal (PV/T) systems. The basic working principle, energy balances, thermal modelling, energy and economic analysis will be discussed. An instantaneous and overall efficiency of each solar thermal and electric system are also discussed and their results compared for economic analysis. Basic knowledge of availability of solar radiation is discussed in the beginning. Life cycle cost analysis, which includes initial investment, operating cost, interest rate, salvage value and annual power output, has been considered. An energy pay back time (EPBT) for solar electric/ thermal (PV/T) system has been evaluated by evaluating embodied energy during production of solar cell, PV module and balance of system (BOS) and useful both electric and thermal energy. Thermal energy from PV module can be in the form of sensible heat either for water or for air heating system.

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Dl4All is download free for all software and educational resource. With a little searching, you can download what you need for free without spending any money.

Dl4All - Download free For All: software and educational resource.

Sports Card Collecting & Investing For Dummies

Spitfire's Forgotten Designer

Spiritual Guidebook Mastering psychic development and healing techniques (Planners)

Spike Island Saints, Felons and Famine

Speaking for Others The Ethics of Informal Political Representation

Speaking Out The New Rules of Business Leadership Communication

Speakers! The Quick Public Speaking to Business Method

Sorbents Properties, Materials and Applications

Sometimes I Think About It Essays

Solar Energy Technology Advances