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Showing 1 to 20 of 723 for “"high intensity"”.
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High-intensity laser generated neutrons
Hochintensitätslaser erzeugen im Fokus Lichtintensitäten, deren Feldstärke die rapide Beschleunigung vieler Elektronen und über die dadurch hervorgerufenen quasistatischen Felder die Beschleunigung von Ionen auslöst. Durch verschiedene Kernreaktionen (z.B. Fusion) dieser Ionen können Neutronen …
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High intensity femtosecond enhancement cavities
To produce extreme ultraviolet radiation via high harmonic generation (HHG) in rare gases, light intensities in excess of 1014 W/cm 2 are required. Usually such high intensity are obtained by parametric amplification of laser pulses, which in turn reduces the pulse repetition rate to a few kHz. …
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High intensity sound in lined ducts
The method of multiple scales is used to analyze the nonlinear effects of the gas motion as well as the acoustic lining material on the propagation and attenuation of sound in two-dimensional and circular ducts of uniform cross sections in the absence of mean flow. The ducts are lined with a …
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High-Intensity Interval Training in the Heat
High-intensity interval training (HIIT) is an effective form of exercise; however, it remains unclear how heat stress, exercise intensity prescription, and recovery mode influence work rate adjustments, thermal and cardiovascular strain, and maximal aerobic capacity (V̇O2max). Three studies …
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Recovery Methodologies and High Intensity Interval Training
… was to determine recovery from Tabata bodyweight high intensity interval training (HIIT) exercise using different recovery assessment methodologies across 24- and 48-hour time intervals. Participants (23.2 ± 3.1 years old, 163.1 ± 19.9 lbs., and 22.8 ± 9.6 % body fat) consisted of 3 females and 7 …
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High intensity training: implications for optimal ageing
… thesis was to investigate the potential of using high intensity training (HIT) as an exercise paradigm to promote optimal ageing. Seventy seven participants (age range 35-75 years) were recruited to take part in HIT protocols consisting of 10 x 6 second sprints interspersed with a minimum of 1 …
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Passive monitoring of high-intensity focused ultrasound
High intensity focused ultrasound (HIFU) can provide a means of noninvasive ablation or hyperthermia of tissues such as tumors. Real-time monitoring of the progression of the field distribution of the HIFU transducer during treatment is important for localizing the intersection of the beam with the …
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Aspects of a high intensity neutron source
A unique methodology for creating a neutron source model was developed for deuterons and protons incident on solid phase beryllium and lithium targets. This model was then validated against experimental results already available in literature. The model was found to adequately characterize the …
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Design of a high intensity ultrasound dispersion cell
… on the factors causing mechanical damage in a high power ultrasound environment, and to give recommendations for the production of an ultrasonic dispersion cell with a removable treatment vessel. The primary mechanism for causing this dispersion was cavitation: a void of air or vapour in a …
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Fluorocarbon synthesis in a high-intensity carbon arc
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 1963
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High-intensity interval eccentric cycling: Acute and chronic effects
… for cardiovascular and pulmonary adaptations. High-intensity interval protocols may increase both, strength and endurance. Thus, this research project compared i) an incremental concentric and eccentric cycling test until exhaustion for the relationship between power output and physiological …
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High-intensity aerobic and resistance training for metabolic syndrome
… disease and type 2 diabetes. Moderate-intensity physical activity is a primary management strategy, but Australian adults fail to meet current physical activity guidelines. Two key barriers are time and accessibility. High-intensity interval training (HIIT) may offer a solution to these …
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Fast rate fracture of aluminum using high intensity lasers
Laser induced shock experiments were performed to study the dynamics of various solid state material processes, including shock-induced melt, fast rate fracture, and elastic to plastic response. Fast rate fracture and dynamic yielding are greatly influenced by microstructural features such as grain …
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Effect of high intensity interval training on Parkinson's disease
… has gained popularity due to its benefits is high intensity interval training (HIIT). This modality of exercise allows modifiable and accessible training sessions that improve cardiorespiratory fitness. Its benefit has extended to individuals with chronic disease but not robustly in the …
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The effect of self-regulation on high intensity exercise
… if the use of self-regulated (SR) rest during high intensity training (HIT) can be used to increase endurance and power output measures between males and females.<br/><br/>Study one aimed to determine if males and females can maintain mean power output (MPO) during repeated sprints when using …
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Resistance of Reinforced Concrete Structures Under High Intensity Loads
Made available in DSpace on 2014-12-13T19:31:56Z (GMT). No. of bitstreams: 1 8004210.pdf: 6759050 bytes, checksum: 408870e9ca9e5065d6fe76ec6301d02c (MD5) Previous issue date: 1979
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A compact high-intensity source of 14-MEV neutrons
Thesis (Sc.D.) Massachusetts Institute of Technology. Dept. of Electrical Engineering, 1955.
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High intensity exercise induced regulation of the microRNA biogenesis pathway
… characterizing the acute and chronic effects of high-intensity interval exercise (HIIE) on components of the miRNA biogenesis pathway. Our findings revealed a nuanced regulatory response of the miRNA biogenesis pathway, with acute HIIE eliciting changes in mRNA expression and chronic HIIE showing …
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