(Invited) Atomistic Guideline for MONOS-Type Memories with High Program/Erase Cycle Endurance

2019 ◽  
Vol 28 (2) ◽  
pp. 403-410 ◽  
Author(s):  
Keita Yamaguchi ◽  
Kenji Shiraishi ◽  
Akira Otake ◽  
Kenji Kobayashi
Keyword(s):  
Cycle Endurance

Six sessions of sprint interval training increases muscle oxidative potential and cycle endurance capacity in humans

2005 ◽  
Vol 98 (6) ◽  
pp. 1985-1990 ◽  
Author(s):  
Kirsten A. Burgomaster ◽  
Scott C. Hughes ◽  
George J. F. Heigenhauser ◽  
Suzanne N. Bradwell ◽  
Martin J. Gibala
Keyword(s):  
Citrate Synthase ◽  
Training Session ◽  
Interval Training ◽  
Maximal Activity ◽  
Work Capacity ◽  
Control Group ◽  
Endurance Capacity ◽  
Sprint Interval Training ◽  
Oxidative Potential ◽  
Cycle Endurance

Parra et al. ( Acta Physiol. Scand 169: 157–165, 2000) showed that 2 wk of daily sprint interval training (SIT) increased citrate synthase (CS) maximal activity but did not change “anaerobic” work capacity, possibly because of chronic fatigue induced by daily training. The effect of fewer SIT sessions on muscle oxidative potential is unknown, and aside from changes in peak oxygen uptake (V̇o2 peak), no study has examined the effect of SIT on “aerobic” exercise capacity. We tested the hypothesis that six sessions of SIT, performed over 2 wk with 1–2 days rest between sessions to promote recovery, would increase CS maximal activity and endurance capacity during cycling at ∼80% V̇o2 peak. Eight recreationally active subjects [age = 22 ± 1 yr; V̇o2 peak = 45 ± 3 ml·kg−1·min−1 (mean ± SE)] were studied before and 3 days after SIT. Each training session consisted of four to seven “all-out” 30-s Wingate tests with 4 min of recovery. After SIT, CS maximal activity increased by 38% (5.5 ± 1.0 vs. 4.0 ± 0.7 mmol·kg protein−1·h−1) and resting muscle glycogen content increased by 26% (614 ± 39 vs. 489 ± 57 mmol/kg dry wt) (both P < 0.05). Most strikingly, cycle endurance capacity increased by 100% after SIT (51 ± 11 vs. 26 ± 5 min; P < 0.05), despite no change in V̇o2 peak. The coefficient of variation for the cycle test was 12.0%, and a control group ( n = 8) showed no change in performance when tested ∼2 wk apart without SIT. We conclude that short sprint interval training (∼15 min of intense exercise over 2 wk) increased muscle oxidative potential and doubled endurance capacity during intense aerobic cycling in recreationally active individuals.

Short-Term Training, Muscle Glycogen, and Cycle Endurance

1995 ◽  
Vol 20 (3) ◽  
pp. 315-324 ◽  
Author(s):  
Howard J. Green ◽  
Marg Ball-Burnett ◽  
Steve Symon ◽  
Sue Grant ◽  
Greg Jamieson
Keyword(s):  
Vastus Lateralis ◽  
Endurance Performance ◽  
Control Group ◽  
Vastus Lateralis Muscle ◽  
Short Term ◽  
Exercise Time ◽  
Glycogen Concentration ◽  
Prolonged Fatigue ◽  
Performance Adaptation ◽  
Cycle Endurance

The objective of this study was to test the hypothesis that the increased glycogen concentration found in the working muscles following short-term training would result in an increase in endurance performance. Endurance performance was examined in 8 active but untrained males who cycled until fatigue at 65% [Formula: see text]max prior to and following 3 consecutive days of training. Training consisted of cycling for 2 hrs a day at the same power output used in the prolonged fatigue trials. A 39% increase in cycle time, from 103 ± 7.7 to 143 ± 14 min (p < 0.05), was observed following training. At fatigue prior to training, glycogen concentration in the vastus lateralis muscle was depleted by 75% (317 ± 17 to 78.8 ± 32 mmol∙glucosyl units∙kg−1 d.w). Following training, glycogen concentration at a comparable work time was 2.3 times higher. The elevated glycogen level following training was due both to higher glycogen at rest and during exercise. The energy cost of the activity as measured by the [Formula: see text] at selected intervals was unchanged with training. No change (p > 0.05) in exercise time was observed in a control group who were subjected to similar exercise protocols approximately 1 to 2 weeks apart. It is concluded that short-term training at least in untrained individuals ([Formula: see text]max averaging 43.6 ± 2.9 ml∙kg−1∙min−1) substantially elevates submaximal exercise tolerance and that the increase in resistance to fatigue is related to the elevated availability of glycogen. Key words: endurance performance, adaptation, carbohydrate, vastus lateralis

Read-Cycle Endurance of Magnetic Random Access Memory Elements

2004 ◽  
Vol 40 (4) ◽  
pp. 2631-2633
Author(s):  
T. Kuroiwa ◽  
T. Takenaga ◽  
B. Sadeh ◽  
H. Kobayashi ◽  
K. Sato
Keyword(s):  
Random Access ◽  
Random Access Memory ◽  
Access Memory ◽  
Magnetic Random Access Memory ◽  
Cycle Endurance

Constant-load Cycle Endurance Performance

2003 ◽  
Vol 23 (2) ◽  
pp. 143-150 ◽  
Author(s):  
Alex van ???t Hul ◽  
Rik Gosselink ◽  
Gert Kwakkel
Keyword(s):  
Endurance Performance ◽  
Load Cycle ◽  
Constant Load ◽  
Cycle Endurance

Anaerobic threshold alterations caused by endurance training in middle-aged men

1979 ◽  
Vol 46 (6) ◽  
pp. 1039-1046 ◽  
Author(s):  
J. A. Davis ◽  
M. H. Frank ◽  
B. J. Whipp ◽  
K. Wasserman
Keyword(s):  
Endurance Training ◽  
Anaerobic Threshold ◽  
Minute Ventilation ◽  
Correlation Coefficients ◽  
Cycle Ergometer ◽  
Work Rate ◽  
Middle Aged ◽  
Co2 Output ◽  
Before And After ◽  
Cycle Endurance

Nine previously sedentary middle-aged males underwent cycle endurance training 45 min/day for 9 wk with an average attendance of 4.1 days/wk. Seven males served as controls. Before and after the training period, the subjects performed three cycle ergometer tests. Work rate was incremented by 15 W/min, to the limit of the subjects' tolerance, in the first two tests; the third test consisted of contant-load cycling at an O2 uptake (VO2) just below the pretraining anaerobic threshold (AT). After training, the AT increased significantly by 44%, expressed as absolute VO2, and by 15%, expressed relative to VO2 max. Significant increases were also noted in VO2max (25%), maximal minute ventilation (19%), and maximal work rate (28%). The test-retest correlation coefficients for the AT (%VO2max) were 0.91, pre- and posttraining. Training did not alter steady-state VO2 during the submaximal exercise test whereas significant decreases occurred in CO2 output, VE, respiratory quotient, and VE/VO2. No changes occurred in the control subjects during this period. These results demonstrate that the AT is profoundly influenced by endurance training in previously sedentary middle-aged males.

Different Methods for Fatigue Assessment of T Welded Joints Used in Ship Structures

2007 ◽  
Vol 51 (02) ◽  
pp. 150-159 ◽  
Author(s):  
V. Crupi ◽  
E. Guglielmino ◽  
A. Risitano ◽  
D. Taylor
Keyword(s):  
Welded Joints ◽  
Fatigue Behavior ◽  
Experimental Tests ◽  
Ship Structures ◽  
Element Analysis ◽  
Fatigue Assessment ◽  
Endurance Limits ◽  
Thermographic Analysis ◽  
Using Data ◽  
Cycle Endurance

The aim of this work is the prediction of high-cycle fatigue behavior in welded joints, which represent regions of weakness in the ship structures. The traditional methods for fatigue assessment of welded joints have some limitations. Some new methods were recently developed by Taylor: the crack modeling method (CMM) and the theory of critical distances methods (TCD). Experimental tests were carried out to define the high-cycle endurance limits of aluminum T-shaped welded joints. Using data obtained from finite element analysis (FEA), the fatigue strength was evaluated according to the CMM and the TCD. Thermographic analysis was also carried out during the experimental tests to assess the high-cycle endurance limits of the welds by means of the Risitano method (RM). The previous methods were also applied to a specific case, fatigue in T joints containing a drilled hole at different angles, which allowed us to study a typical industrial design problem involving two different features. Good predictions were achieved using all the methods.

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