implantable devices current directions
RESEARCH ON MELANOMA – A GLIMPSE INTO CURRENT DIRECTIONS AND FUTURE TRENDS doc
Ngày tải lên: 28/06/2014, 05:20
implantable biosensor devices for lactate and glucose detection
Ngày tải lên: 13/05/2014, 14:00
Manage MD devices aka Linux Software Raid
... raid -devices= Specify the number of active devices in the array. This, plus the number of spare devices (see below) must equal the number of component -devices (including "missing" devices) ... spare -devices= For Manage mode: -a, add hotadd listed devices. -r, remove remove listed devices. They must not be active. i.e. they should be failed or spare devices. -f, fail mark listed devices ... mdadm NAME mdadm - manage MD devices aka Linux Software Raid. SYNOPSIS mdadm [mode] <raiddevice> [options] <component -devices& gt; DESCRIPTION RAID devices are virtual devices created from...
Ngày tải lên: 18/09/2012, 10:13
Mechanisms and Mechanical Devices Sourcebook - Chapter 3
... avoids the cam-based mecha- nisms more commonly used for accomplishing this job. SIMPLE FEEDING DEVICES The oscillating sector picks up the desired number of parts, left diagram, and feeds them ... specifically for the machine on which they will be installed. When properly designed, automatic safety devices (1) do not reduce the operator’s visibility, (2) do not interfere with the operator’s performance, ... mechanisms can be simple conveyors that give positive guidance, or they might include secure holding devices if the parts are subjected to processing operations while being fed through a machine. One...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 4
... then con- verts that oscillation into the desired in- line output motion. ROTARY-TO-RECIPROCATING DEVICES Sclater Chapter 4 5/3/01 10:45 AM Page 114 Operating sequence. In operation, the input wheel ... circular pitch of the driven gear. Sclater Chapter 4 5/3/01 10:44 AM Page 107 115 VARIABLE SPEED DEVICES By substituting elliptical gears for the usual circular gears, a planetary drive is formed. ... disk forces the escapement tip out of its slot and into the notch. That locks the output in both directions. A crank attached to the planet gear can make point P describe the double loop curve...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 5
... Chapter 5 5/3/01 11:45 AM Page 138 134 TWELVE EXPANDING AND CONTRACTING DEVICES Parallel bars, telescoping slides, and other devices that can spark answers to many design problems. Fig. 1 Figs. ... high to satisfy the design requirements, and it is undesirable to enlarge the cam size, cer- tain devices can be installed to reduce the pressure angles: Sliding cam—This mechanism is used on a ... Other prior mechanisms relied on spring load- ing, differential multiple-point drives and other devices to reduce backlash. In pro- viding three-point drive along a track between the movable and...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 6
... THREADING Sclater Chapter 6 5/3/01 12:25 PM Page 193 196 FOURTEEN ADJUSTING DEVICES Here is a selection of some basic devices that provide and hold mechanical adjustment. Fig. 1 A spring-loaded ... appli- cations for overriding spring arrangements are in instrumentation, it is feasible to apply these devices in the drives of heavy-duty machines by strengthening the springs and other load-bearing ... screws and nuts from hardware store shelves can often serve at very low cost. 191 TWENTY SCREW DEVICES Here are the basic motion transformations possible with screw threads (Fig. 1): • Transform...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 7
... while rotating. Sclater Chapter 7 5/3/01 12:33 PM Page 207 217 EIGHT SNAP-ACTION DEVICES Another selection of basic devices for obtaining sudden motion after a gradual buildup of force. Fig. 1 ... cam. Sclater Chapter 7 5/3/01 12:32 PM Page 200 207 FIFTEEN IDEAS FOR CAM MECHANISMS This assortment of devices reflects the variety of ways in which cams can be put to work. Figs. 1, 2, and 3 A constant-speed rotary ... applied to fit this principle into many different mechanisms. It is the basis of most snap-action devices. Fig. 5 The sphere ejection principle is based on snap buttons, spring-loaded balls and...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 8
... logarithmic spiral gears shown in (A), are open-curved. They are usually compo- nents in computing devices. The elliptically shaped gears, shown in (B), are closed curved. They are components in...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 9
... mounting. Purely Magnetic Clutches Probably less familiar than the friction types are hysteresis and eddy -current clutches. They operate on straight magnetic princi- ples and do not depend on mechanical ... but the magnetic segments of the hysteresis clutch are electrically isolated, and those of the eddy -current clutch are interconnected. The magnetic analogy of both styles is similar in that the flux ... similar to the one shown above. The torque requirements for the slip clutches and brakes for the two directions of rotation are: (1) Slip clutch in normal takeup capacity (active function) is 0.5 to...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 10
... Page 361 356 MECHANICAL, GEARED, AND CAMMED LIMIT SWITCHES Limit switches are electric current switching devices that are operated by some form or mechanical motion. Limit switches are usually ... control cir- cuits, limit switches have many other uses. For example, they are important as safety devices to stop a machine, sound a warning signal, or illuminate a warning light when a dangerous ... switches Sclater Chapter 10 5/3/01 1:08 PM Page 356 CHAPTER 10 TORQUE-LIMITING, TENSIONING, AND GOVERNING DEVICES Sclater Chapter 10 5/3/01 1:07 PM Page 339 Selsyn motors can directly drive inde- pendent...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 11
... this hammer. The weight of the blows can be controlled by varying the electric current in the coils or timing the current reversals by an air-gap adjustment of the contacts. Fig. 7 This spring-operated ... snap action to the contacts. Fig. 3 This overload relay for large motors passes some of the motor current through a heating coil within the relay. Heat from the coil raises the temperature of a ... Chapter 11 5/3/01 1:16 PM Page 392 402 INSTANT MUSCLE WITH PYROTECHNIC POWER Cartridge-actuated devices generate a punch that cuts cable and pipe, shears bolts for fast release, and provides...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 13
... in selected position); (2) overload devices in mechanical linkages (they shift to the opposite position when sufficiently loaded); and (3) energy-storage devices. Two applications, shown in Fig. ... α αα 222 2 12 1 180 sin n m= a n sin 180 437 Fig. 3 A four-slot geneva (A) and an eight-slot geneva (B). Both have locking devices. Fig. 5 Chart for determining the angular velocity of the driven member. Fig. 4 Chart for...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 14
... and its specific application requirements. However, the microscopic dimensions of the devices generally rule out current- induced magnetic forces such as those that drive conventional electric 476 motors ... compression cylinders is heated by electric current, and when it vaporizes, it pushes the pistons out. Capillary forces then retract the piston once current is removed. A design has been developed ... produced microminiature motors, sensors, gear trains, valves, and other devices that easily fit on a silicon microchip, but difficulties in powering these devices has inhibited their practical applications. MEMS...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 15
... Data Sclater, Neil. Mechanisms and mechanical devices sourcebook / Neil Sclater, Nicholas P. Chironis.— 3rd ed. p. cm. Rev. ed of: Mechanisms & mechanical devices sourcebook / [edited by] Nicholas ... Washington, NY xv ACKNOWLEDGMENTS Sclater FM 5/3/01 9:50 AM Page xv MECHANISMS & MECHANICAL DEVICES SOURCEBOOK Third Edition NEIL SCLATER NICHOLAS P. CHIRONIS McGraw-Hill New York • Chicago ... 0-07-136169-3 1. Mechanical movements. I. Chironis, Nicholas P. II. Mechanisms & mechanical devices sourcebook. III. Title. TJ181.S28 2001 621.8—dc21 2001030297 Copyright © 2001, 1996, 1991...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 12
... MOVEMENTS Some of the more robust and practical devices for stopping mechanical movements are illustrated here. Fixed holding power is constant in both directions. A domed plunger has long life. ... and unloading operations. Sclater Chapter 12 5/3/01 1:25 PM Page 411 414 FRICTION CLAMPING DEVICES Many different devices for gaining mechanical advantage have been used in the design of friction clamps. ... hub. Sclater Chapter 12 5/3/01 1:25 PM Page 420 CHAPTER 12 FASTENING, LATCHING, CLAMPING, AND CHUCKING DEVICES Sclater Chapter 12 5/3/01 1:24 PM Page 405 421 Fig. 5 A retaining ring allows quick gear...
Ngày tải lên: 22/10/2012, 14:26
Bạn có muốn tìm thêm với từ khóa: