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10 Aug 1999:

22 Feb 2011: About 20% of the students studying Maths GCSE in 2003 (which is virtually every pupil in England and Wales) obtained good GCSE results (B or above) in Double Science GCSE.

1 May 1999: I am also interested in Ultrasonic Motors which work above 20 kHz and are therefore inaudible to the human ear.

23 Sep 1998: 20% yield stress.

29 Sep 2004: Imhof,D. Probabilistic Safety Assessment of Existing Bridges. The Young Researchers' Conference, 20 March 2002, Poster Presentation: The Institution of Structural Engineers, Upper Belgrave Street, London.

3 Nov 2010: These tests have included a series of half-scale beam-and-slab bridge tests funded by EPSRC and the Highways Agency and 20 scale models of concrete bridges.

1 May 1999: Ultrasonic Motors. Ultrasonic motors and linear motors work above 20 kHz and are therefore inaudible to the human ear. ... Although the rotor moves only a micrometer in an individual cycle of the elliptical motion, this can add up to a speed of 2cm/sec

10 Aug 2004: It was found that gravity can be compensated by controlling the forces in the suspension elements to between 10% and 20% of g, however by controlling the displacements, the compensation is

8 Jul 2004: Even though extensive research has taken place in the last 20 years, their use has been limited to prototype structures.

10 Mar 2005: An in-depth review of 20 currently available thermoplastic composite joining techniques is presented.

21 Jul 1998: Actuator No.3. Design There are 20 steel disks in each side of this one-way/two-way actuator.

31 Jul 2008: It is shown for small span-to-depth ratios up to 20% membrane enhancement may be available through friction at the supports alone.

20 Dec 2001: The spiral is assumed to have a pitch of 20 mm and an internal diameter of 90 mm, with a centre-centre distance for the overlapping spirals of 45 mm.

26 Mar 2010: GCI is assumed to be 0.15 N/mm for the 20 mm crushed aggregates used in the tests [3].

26 Mar 2010: found to be 0.42 mm and 140.0 mm respectively for Kevlar 49, and 0.20 mm and 128.0 mm respectively for Technora.

26 Mar 2010: Time [log10 (hours)]. Stra. in. [%]. 10-01. 20-01. 30-01. 40-01. 50-0155-0160-0165-0170-01. ... 2. Time [log10 (hours)]. Stra. in. [%]. 10-02. 20-02. 30-02. 40-02.

8 Apr 2011: Conventional creep tests were also carried out, each for 100 days, at different stress levels (10, 20, 30, 40, 50, 55, 60, 65, 70 % of ABL) under constant temperature and humidity. ... 1.6. 1.7. 1.8. 1.9. 2. Time [log10. (hours)]. Str. ain. [. %]. 10%. 20

25 Aug 2008: for Kevlar 49, and 0.20 mm and 128.0 mm respectively for Technora. ... 90. Time [hours]. Tem. pera. ture. [o. C]. 0 5 10 15 20.

26 Mar 2010: Also shown are the responses for singly reinforced concrete with spacing of 20 mm and 10 mm. ... 20] Leung H.Y. and Burgoyne C.J., “The uniaxial stress-strain relationship of spirally-confined.

25 Jul 2007: Load. (kN. ). Test. Predict. Load-dis. profile - C3-20-75-20-125. 0. 200. ... 60. 80. 100. 120. 140. 0 20 40 60 80 100 120 140.