... volume book Thus, Nutrition and Metabolism: Underlying Mechanisms and Clinical Consequences offers only an up-to-date and authoritative review of the major scientific and clinical aspects of the overlapping ... chapters Nutrition and Metabolism: Underlying Mechanisms and Clinical Consequences, edited by Christos S Mantzoros, MD is a very welcome addition to the Nutrition and Health Series and fully exemplifies ... conclusion, Nutrition and Metabolism: Underlying Mechanisms and Clinical Consequences, edited by Christos S Mantzoros, MD provides health professionals in many areas of research and practice with...
Ngày tải lên: 22/03/2014, 19:20
... Bernhard and Sen Gupta (1999), Levin (2004) Bernhard and Sen Gupta (1999), Levin (2004) Helly and Levin (2004) Helly and Levin (2004), Middelburg and Levin (2009) Helly and Levin (2004), Middelburg and ... ANOXIA: Evidence for Eukaryote Survival and Paleontological Strategies is timely and exciting and we now present it in this volume, which is aimed at biological researchers of ecology and biodiversity, ... Reference Tyson and Pearson (1991) Stramma et al (2008) Levin (2004) Paulmier and Ruiz-Pino (2009) Paulmier and Ruiz-Pino (2009) Childress and Seibel (1998) Helly and Levin (2004) Childress and Seibel...
Ngày tải lên: 28/03/2014, 21:20
Báo cáo sinh học: "Resistance of livestock to viruses: mechanisms and strategies for genetic engineering" doc
... It includes prerequisites for and principles of the design of new resistance mechanisms, and proposes possible strategies for the introduction of disease resistance mechanisms by gene transfer ... HOSTS AND VIRUSES Basic understanding of the parallel evolution of viruses and their hosts provides a useful starting point for the consideration of strategies for genetic engineering of new mechanisms ... natural and genetically engineered resistance mechanisms that were already tested, several possible strategies can be proposed and are listed below according to stages of viral life cycle The strategies...
Ngày tải lên: 09/08/2014, 18:22
Báo cáo y học: " Fat distribution and longitudinal anthropometric changes in HIV-infected men with and without clinical evidence of lipodystrophy and HIV-uninfected controls: A substudy of the Multicenter AIDS Cohort Study" potx
... tomography (CT) and dual-energy X-ray absorptiometry (DXA) in HIV-uninfected men (HIV-), HIV-infected men without clinical evidence of lipodystrophy (HIV+LIPO-), and HIV-infected with clinical evidence ... HIV-uninfected control men (HIV-), HIV-infected men without clinical evidence of lipodystrophy (HIV+LIPO-), and HIV-infected with clinical evidence of lipodystrophy (HIV+LIPO+) Error bars represent ... HIV-uninfected control men (HIV-), HIV-infected men without clinical evidence of lipodystrophy (HIV+LIPO-), and HIV-infected with clinical evidence of lipodystrophy (HIV+LIPO+) Click here for file...
Ngày tải lên: 10/08/2014, 05:21
Knee biomechanics during impact landing understanding injury mechanisms and developing prevention strategies 2
... Effect of landing height and technique on sagittal knee joint kinematics and energetics a Time profiles The landing phase was denoted by the duration of landing between initial contact and maximum ... reaction forces (GRF) during the landing phase of double-leg landing and single-leg landing from 0.3-m and 0.6-m heights * significant difference compared to double-leg landing at 0.3-m height (p
Ngày tải lên: 14/09/2015, 14:05
Knee biomechanics during impact landing understanding injury mechanisms and developing prevention strategies 3
... angles and angular velocities during double-leg landing and/ or at greater landing height, and 3) elevated joint power and eccentric work done during double-leg landing and/ or at larger landing ... (0.3m and 0.6m) and technique (single-leg and double-leg landing) The key observations of the study were as follows: 1) heightened peak GRF during single-leg landing and/ or at greater landing ... for singleleg landing than double-leg landing for both 0.3-m and 0.6-m landing heights McNitt-Gray (1993), and Seegmiller and McCaw (2003) reported an increase in peak GRF when the landing height...
Ngày tải lên: 14/09/2015, 14:05
Knee biomechanics during impact landing understanding injury mechanisms and developing prevention strategies 1
... landing 5.1.9 Comparison of knee flexion angular velocities between landing height and between landing techniques 5.1.10 Comparison of knee joint powers between landing height and between landing ... between landing height and between landing techniques 5.1.12 Comparison of hip, knee and ankle joint angles at initial contact between double-leg and single-leg landing in both sagittal and frontal ... double-leg and single-leg landing in both sagittal and frontal planes 5.1.15 Comparison of peak hip, knee and ankle joint moments between double-leg and single-leg landing in both sagittal and frontal...
Ngày tải lên: 14/09/2015, 14:05
Mechanisms and Mechanical Devices Sourcebook - Chapter 3
... APPLICATIONS Viscous liquid adhesives are used to glue fabrics and paper, apply paper labels, make cardboard and wooden boxes and shoes, and bind books Specially designed machines are required if ... 56 CUTTING MECHANISMS By pressing down on the foot pedal of this mechanism, the top knife and the clamp will be moved downward However, when the clamp presses on the material, both it and link ... would bend and jam Avoid these designs, if possible—Especially if automatic assembly methods will be employed A rotary screw-feed handles screws, headed pings, shouldered shafts, and similar...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 4
... 4, and T3/T4 = L3/L4 = 2/3, where T3 and T4 are the numbers of teeth on gears and T1 and T2 will denote the numbers of teeth on gears and 98 and S = ∆θ 3/θ30 Hence θ30(1 + S)L3 = 360º For S = and ... = r4 and r2 = r3, there is no “differential motion” and the output remains stationary Thus if one gear pair, say and 4, is made partly circular and partly noncircular, then where r2 = r3 and r1 ... intermittent mechanisms based on timing belts, pulleys, and linkages (see drawing) instead of the usual genevas or cams is capable of cyclic start -and- stop motions with smooth acceleration and deceleration...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 5
... Dynamic and static balancing is simplified when an expanding wheel is attached to a nonexpanding main wheel As a pulley, an expanding wheel can have a steel band fastened to only one section and ... 11:45 AM Page 134 TWELVE EXPANDING AND CONTRACTING DEVICES Parallel bars, telescoping slides, and other devices that can spark answers to many design problems Figs and Expanding grilles are often ... steel band, or rope around the drum is fastened to the driving and driven members; sprocket-wheels and chain can replace the drum and belt GEARS Fig Matching gear-segments Fig 10 Racks and coupled...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 6
... Bearing adjustment This screw arrangement is a handy way for providing bearing adjustment and overload protection Rapid and slow feed With left- and right-hand threads, slide motion with the nut locked ... bearings—such as the ball and roller bearings and of sliding bearings—which include sleeve and hydrostatic bearings Neither rolling nor sliding, flexures simply cross-suspend a part and flex to allow ... 0.4—A linear spring rate and high load resistance with small deflections For height to spring ratios between 0.8 and 1.0—An almost linear spring rate for fasteners and bearing and in stacks For rations...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 7
... 204 Fig Mechanisms for generating (A) modified cycloidal curves, and (B) basic cycloidal curves true cycloidal This is done by a second steel-band arrangement As carriage I moves, bands and cause ... equations of motion Fig A standard differential winch consists of two drums, D1 and D , and a cable or chain which is anchored on both ends and wound clockwise around one drum and counterclockwise around ... ROLLER CHAINS AND THEIR ADAPTATIONS Various roller, side-plate and pin configurations for power transmissions, conveying, and elevating STANDARD ROLLER CHAIN—FOR POWER TRANSMISSION AND CONVEYING...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 8
... power losses in the gears and bearings and from windage and churning of lubricant gear power: A gear’s load and speed capacity, determined by gear dimensions and type Helical and helical-type gears ... motor comparable in size and power to those used in standard reel-to-reel recorders, and a large bi-peripheral flywheel and sturdy capstan that reduces wow and flutter and drives the tape A patent ... manufacturing and alignment and (2) thermal and vibrational changes in the sizes and positions of the meshing components One of the benefits is a reduction of gear-toothcontact noise and vibration...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 9
... bi-directional slip and independent torque capacities for the two directions of rotation It requires two springs, one right-handed and one left-handed, for coupling the input, intermediate and output ... faster Edges of the clutch bands carry the entire load, and there is also a compound action of one band upon another As the torque builds up, each band pushes down on the band beneath it, so each ... requirements of MIL-E-5400, class and MILK-3926 specifications Applications were seen in counter and reset switches and controls for machines and machine tools, radar systems, and precision potentiometers...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 10
... clutch plates, gear fingers, and pinned members form the basis of these ingenious mechanisms Mechanical stops are often required in automatic machinery and servomechanisms to limit shaft rotation ... between the pin and the rotating finger must be shorter than the thread pitch so the pin can clear the finger on the first reverse-turn The rubber ring and grommet lessen the impact and provide a ... between the indicator and the actuating drive However, the force amplification between the indicator and the drive is rel- 349 Sclater Chapter 10 5/3/01 1:07 PM Page 350 Speed and Tension Control...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 11
... completely encased and cannot expand beyond its original diameter The standard pump is made of bronze and will handle volumes to 15 gpm The Squeegee develops a vacuum of 25 in of mercury and will work ... sucking and pushing actions and are not churned or foamed 370 PUMPING ACTION is produced by the meshing of the idler and rotor teeth in this rotary pump The idler is pinmounted to the head and the ... single-gland type Automatic wear control compensates for normal wear and maintains volumetric efficiency This pump will handle to 300 gph without churning or foaming It needs no lubrication and operates...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 13
... opposite sense to ψ14, ψ13 and ψ12 This establishes points A′2, A′3 and A′4, but here A′3 and A′4 coincide because of symmetry of A3 and A4 about A0B0 Draw lines A1A′2 and A1A′4, and the perpendicular ... a2/a1 and the initial position of the gear set, defined by the initial positions of θ1 and θ2, designated as θ10 and θ20, respectively Typical B-curve shapes (Fig 4) include ovals, cusps, and loops ... to maximize snap-action Over-centering toggle mechanisms, as shown in Fig 1, are widely used in mechanical and electrical switches, latch mechanisms and mechanical overload controls These toggles...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 14
... elements and icons, and 2D drafting and detailing capability, which support design collaboration and compatibility among CAD, CAM, and computer-aided engineering (CAE) applications Designers and engineers ... permit lettering, callouts, and the entry of notes and parts lists, and some even offer the capability for calculating such physical properties as volume, weight, and center of gravity if the ... datums, and section lines • Automated geometric dimensioning and tolerancing (GD&T) • Symbol creation, including those for weld and surface finish, with real-time edit or move capability and leaders...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 15
... revised and edited the Second Edition of Mechanisms and Mechanical Devices Sourcebook after the death of Mr Chironis The late Nicholas P Chironis developed the concept for Mechanisms and Mechanical ... engineer in the military/aerospace industry and a Boston engineering consulting firm before changing his career path to writing and editing on electronics and electromechanical subjects He was a ... and newspapers on various topics in engineering and industrial marketing Mr Sclater holds degrees from Brown University and Northeastern University, and he has completed graduate courses in industrial...
Ngày tải lên: 22/10/2012, 14:26
Mechanisms and Mechanical Devices Sourcebook - Chapter 12
... left-handed threads, • An eye on a shank with external righthanded threads, and • A flanged collar with left-handed external threads to mate with the shank of the firstmentioned eye, and right-handed ... connectors In step 5, the handle is pushed upward an additional 15º, locking the handle cam and the slide In step 6, the handle is rotated an additional 30º, forcing the box and the mating spring-loaded ... the handle and retention cams as the box is moved rearward and downward 409 Sclater Chapter 12 5/3/01 1:24 PM Page 410 Perpendicular-Force Latch (continued ) dle has been installed on the handle...
Ngày tải lên: 22/10/2012, 14:26