dr jekyll and mr hyde quotes chapter 1
Báo cáo khoa học: "Recently published papers: the Jekyll and Hyde of oxygen, neuromuscular blockade and good vibrations" doc
Ngày tải lên: 13/08/2014, 03:20
Mechanisms and Mechanical Devices Sourcebook - Chapter 3
... photoemitter and photoreceiver. Sclater Chapter 3 5/3/ 01 10:23 AM Page 90 64 Sclater Chapter 3 5/3/ 01 10:20 AM Page 64 81 Fig. 19 A paste belt applicator passes around the pulley in a pastepot and slides ... line. This will cause the bobbin changer to operate. Sclater Chapter 3 5/3/ 01 10:22 AM Page 86 91 Sclater Chapter 3 5/3/ 01 10:23 AM Page 91 Fig. 4 Control for the automatic shear. When a seam of ... of a lever, and is removed from the chute by a vibrat- ing table. Sclater Chapter 3 5/3/ 01 10 :19 AM Page 60 84 Automatic Stopping Mechanisms (continued) Sclater Chapter 3 5/3/ 01 10:22 AM Page...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 4
... then act as four-bar linkages, 00 1 PQ. Sclater Chapter 4 5/3/ 01 10:44 AM Page 10 2 CHAPTER 4 RECIPROCATING AND GENERAL-PURPOSE MECHANISMS Sclater Chapter 4 5/3/ 01 10:44 AM Page 93 Fast Cam-Follower ... into a long dwell period during each 270º rotation of the input element. 11 1 Sclater Chapter 4 5/3/ 01 10:45 AM Page 11 1 CONVERTING ROTARY-TO-LINEAR MOTION A compact gear system that provides ... while it is stationary. 12 1 Sclater Chapter 4 5/3/ 01 10:45 AM Page 12 1 Fig. 3 The sliding pin and disk mecha- nism: The counterclockwise movement of body B about shaft A draws pin D to the right...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 5
... gear. Sclater Chapter 5 5/3/ 01 11: 45 AM Page 13 8 13 4 TWELVE EXPANDING AND CONTRACTING DEVICES Parallel bars, telescoping slides, and other devices that can spark answers to many design problems. Fig. 1 Figs. ... (arm 2)/(arm 1) . Sclater Chapter 5 5/3/ 01 11: 45 AM Page 13 6 14 1 Fig. 3 A valve drive demonstrates how the Cardan principle can be applied. A segment of the smaller circle rocks back and forth on ... into an output that oscillates the shaft back and forth. Sclater Chapter 5 5/3/ 01 11: 47 AM Page 17 0 inputs, and z is the output. The motion of x and y in the same direction performs addition;...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 6
... their seats. Sclater Chapter 6 5/3/ 01 12:25 PM Page 19 1 CHAPTER 6 SPRING, BELLOW, FLEXURE, SCREW, AND BALL DEVICES Sclater Chapter 6 5/3/ 01 12:24 PM Page 17 3 installed and integrated into a ... instruments. Sclater Chapter 6 5/3/ 01 12:24 PM Page 18 5 TRANSLATION TO ROTATION 19 2 Fig. 11 A hairline adjustment for a tele- scope with two alternative methods for drive and spring return. Fig. ... adjustment. Figs. 11 and 12 Shaft torque is adjusted (Fig. 11 ) by rotating the spring-holding collar relative to the shaft, and locking the collar at a position of desired torque. Adjusting slots (Fig. 12 )...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 7
... steel’s strength and flexibility, and are coated with sound -and friction-reducing plastic. Sclater Chapter 7 5/3/ 01 12:34 PM Page 227 2 31 Increasing the gap between the roller and knife changes ... SPEED RATIO Sclater Chapter 7 5/3/ 01 12:34 PM Page 2 31 234 Fig. 1 This low-cost rack -and- pinion device is easily assembled from standard parts. Fig. 2 An extension of the rack -and- pinion principle—This ... the locking pressure. Sclater Chapter 7 5/3/ 01 12:33 PM Page 211 true cycloidal. This is done by a second steel-band arrangement. As carriage I moves, bands 3 and 4 cause the eccentric to rotate....
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 8
... equation: 4 1 1 0 2 π θ θ π = − ∫ d Cf() ωωθ θ θ θθθ 211 1 1 1 21 111 1 = = + =− = ∫ G R CG G RCR Gd () () () () θθ θ θ θ 2 = = ′ + ′ =− = + ′ F R CF F RCR C F () () () () 1 1 1 1 21 1 1 1 Rf RCf C d Cf 11 21 21 1 1 = =− =− ... DRIVES PLANOCENTRIC DRIVE WOBBLE-GEAR DRIVE Sclater Chapter 8 5/3/ 01 12:44 PM Page 274 287 RATCHET-TOOTH SPEED-CHANGE DRIVE An in-line shaft drive, with reduction ratios of 1: 1 and 1: 16 or 1: 28, ... complete nutation of the Sclater Chapter 8 5/3/ 01 12:42 PM Page 244 249 Sphere -and- disk drives (Figs. 12 and 13 ). The speed variations in the drive shown in Fig. 12 are obtained by chang- ing the...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 9
... (simplified) (8) β/d = 10 9. C T n 1/ 3 0.3 x =1 x=n l x S S ∑ −− 11 2 () bd TE C n 2 2 e 0.3 13 / σ n T 0.7 1/ 3 bd TE 2 2 13 / T E 13 / dT bE 13 / Ebt dn 3 09. Critical ... tasks and counting. 314 Fig. 1 A double-spring clutch drive. Fig. 2 A basic spring clutch. Fig. 3 A full-wave rectification drive. Fig. 4 A shuttle-pinion drive. Sclater Chapter 9 5/3/ 01 12:57 ... the sprags tightly between the driving and driven members. A relatively large wedging angle ensures positive engagement. Sclater Chapter 9 5/3/ 01 12:57 PM Page 316 310 CONICAL-ROTOR MOTOR PROVIDES...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 10
... Chapter 10 5/3/ 01 1:07 PM Page 3 51 360 Limit Switches in Machinery (continued ) Sclater Chapter 10 5/3/ 01 1:08 PM Page 360 352 DRIVES FOR CONTROLLING TENSION Mechanical, electrical, and hydraulic ... presence of machining tolerances and other geometric imperfection of the drive train. Sclater Chapter 10 5/3/ 01 1:08 PM Page 367 359 Sclater Chapter 10 5/3/ 01 1:08 PM Page 359 atively low; thus ... machinery and protect it and its operator. Actuators Linear mechanical switches Sclater Chapter 10 5/3/ 01 1:08 PM Page 356 CHAPTER 10 TORQUE-LIMITING, TENSIONING, AND GOVERNING DEVICES Sclater Chapter...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 11
... CHAPTER 11 PNEUMATIC AND HYDRAULIC MACHINE AND MECHANISM CONTROL Sclater Chapter 11 5/3/ 01 1 :15 PM Page 369 375 Fig. 8 The housing of the Hele- Shaw-Beachum ... continuous. Sclater Chapter 11 5/3/ 01 1 :16 PM Page 377 389 Fig. 13 A weld tester. Fig. 14 A control device. Fig. 15 A horizontal-shaft suspension. Fig. 17 A finder. Fig. 18 A tachometer. Fig. 16 A floating ... range is 20 to 270°F, and its accuracy is 1 F. The maximum pressure rating is 10 0 psi for dead-end service and 200 psi for continuous flow. Sclater Chapter 11 5/3/ 01 1 :17 PM Page 396 377 (Note:...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 13
... )] max / / = −+ + 22 1 21 12 12 θ θ JS/ cos [ (cos )] (cos ) cos (cos ) max / / = − + −+ − + + + 1 21 1 1 1 212 1 12 2 12 θ θ θ θ θ Sclater Chapter 13 5/3/ 01 1:33 PM Page 452 4 31 STRAIGHT SLIDING ... (9) into Eq. (10 ), cos ϕ = [1 – (A/S) 2 +(A/S) 2 cos 2 θ ] 1/ 2 (11 ) and Eq. (11 ) into Eq. (6), J/S = (A/S) (1 – cos θ) – 1 + [1 – ( A/S) (1 – cos θ) – 1 –( A/S) 2 cos 1/ 2 (12 ) Eq. (12 ) can be considered ... φ 13 , with ψ 12 , and ψ 14 . Fig. 2 Three angular positions, φ 12 , φ 13 , φ 14 , are synchronized by four-bar linkage here with ψ 12 , ψ 13 , and ψ 14 . Sclater Chapter 13 5/3/ 01 1:33 PM Page...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 14
... thicker, and more durable components with greater height-to-width ratios. They can withstand high pressure and temperature excur- Sclater Chapter 14 5/3/ 01 1:44 PM Page 484 CHAPTER 14 NEW DIRECTIONS ... system, builds parts up to 10 in 3 (16 4 cm 3 ) while the FDM3000, a floor- standing system, builds parts up to 10 ì 10 ì 16 in. (26 ì 26 ì 41 cm). Two other floor-standing systems are the FDM ... FDM 8000, which builds models up to 18 ì 18 × 24 in. (46 × 46 × 61 cm), and the FDM Quantum system, which builds models up to 24 ì 20 × 24 in. ( 61 × 51 × 61 cm). All of these systems can be...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 15
... Sclater. 2nd ed. 19 96. ISBN 0-07 -13 616 9-3 1. Mechanical movements. I. Chironis, Nicholas P. II. Mechanisms & mechanical devices sourcebook. III. Title. TJ1 81. S28 20 01 6 21. 8—dc 21 20 010 30297 Copyright ... 20 010 30297 Copyright â 20 01, 19 96, 19 91 by The McGraw-Hill Companies, Inc. All rights reserved, Printed in the United States of America. Except as permitted under the United States Copyright Act of 19 76, no part ... without the prior written permission of the publisher. 12 34567890 KGP/KGP 076543 21 ISBN 0-07 -13 616 9-3 The sponsoring editor for this book was Larry S. Hager and the production supervisor was Pamela A....
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 12
... dimen- sioned hubs and clamps so that they can be efficiently fastened to a precision-ground shaft. Sclater Chapter 12 5/3/ 01 1:25 PM Page 4 21 415 Sclater Chapter 12 5/3/ 01 1:25 PM Page 415 dle has ... self-centering and stronger. Non-sliding gears can be pinned to the shaft if it is provided with a hub. Sclater Chapter 12 5/3/ 01 1:25 PM Page 420 CHAPTER 12 FASTENING, LATCHING, CLAMPING, AND CHUCKING ... cos cos tan cos cos 1 1 A magnetic detent. An axial detent for the positioning of the adjustment knob with a manual release. Sclater Chapter 12 5/3/ 01 1:25 PM Page 417 418 TEN DIFFERENT SPLINED...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 16
... cam-helical 11 9 cam-roller 11 9 cam-worm 11 8 double-crank 11 9 double, hypocycloid 11 1 epicyclic 11 8 long 11 8 rotary, short 11 2 short 12 1 six-bar 11 9 drive bearing -and- roller 11 7 disk -and- roller ... disk -and- roller 11 7 three-gear 11 9 long 11 8 triple harmonic 12 1 Whitworth quick-return 12 1 wheel -and- slider 12 1 worm 10 9 eccentric pivot point 15 7 elliptical-motion drive 11 3 epicycloid ... 3 81 absolute 3 81 Bourdon 3 41 differential 3 81 strain 335 3 41 Gearheads 10 right-angle 10 straight 10 11 Gearmotors 49 Gears (gearing) bevel 10 11 14 4 15 9 243 313 367 Humpage’s 2 71 spiral...
Ngày tải lên: 22/10/2012, 14:27
Mechanisms and Mechanical Devices Sourcebook - Chapter 17
... both classical and mod- ern mechanisms and mechanical devices. This edition retains a large core of the con- tents from both the first and second editions, (published in 19 91 and 19 96, respectively), ... has been supplemented by new and revised articles reflecting present and future trends in mechanical engineering and machine design. The new articles in this edition address topics that are covered ... programmable computer and digi- tal technology on those systems. Other articles discuss servomotors, actuators, sole- noids, and feedback sensors—important electromechanical, and electronic components used...
Ngày tải lên: 22/10/2012, 14:27