Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 93 for “"High-load"”.
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High load limits of the controlled autoignition engine
… is akin to spark-ignition knock and presents a high-load limit to the operating range. Misfire presents a second high-load limit. This work seeks to understand how various engine parameters affect the high-load knock limit and the high-load misfire limit of a CAI engine operating in the …
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Examination of the high load limit of an HCCI engine
… operation. Then the nature of the approach to high load limit was examined for three fuels with very different behavior.An engine simulation was used to examine constrains imposed by NOx emission and by catalyst temperature requirement. The valve timing in a HCCI engine using …
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Optimisation of Performance of 4G Mobile Networks in High Load Conditions
… preceding technologies. It is vulnerable to overload situations that occur as a consequence of unpredicted user behaviour. The most sensitive zones are the paging procedure and random access procedure and the signalling channels associated with them. Reliable paging procedure is particularly …
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Extension of the high load limit in the Homogeneous Charge Compression Ignition engine
… This short burn duration can cause excessively high pressure rise rates which lead to unacceptable engine noise and potentially reduced engine life. To combat this high pressure rise rate the engine must be operating with significant diluent, either excess air or burned exhaust gas. However this …
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The role of fuel in determining the high load limit of controlled auto-ignition engines
… faced is the engine's inability to operate at high loads due to a large Maximum Pressure Rise Rate (MPRR). To address this issue, this research has been focused on analytically determining the optimum fuel that can be used in a CAI engine to reduce the MPRR and extend the high load limit. The …
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A New Approach to Drug Delivery: Non- Peptidic, High Load Macrocyclic Alternatives to Cell Penetrating Peptides
… relevance. The copper catalysed alkyne-azide cycloaddition (CuAAC) reaction is also introduced as a tool for functionalising calixarenes. The phenomenon of cell penetration is of interest where a molecule has an intracellular target, for example gene therapy, delivery of cytotoxic agents or …
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A spring-dominated regime design of a high load capacity, electromagnetically driven X-Y-[theta] stage
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Ceramic lubrication: vapor phase tribopolymerization and a new high speed, high load pin-on-disk machine
… to have an effect over the range examined. But, higher monomer delivery temperatures have a significant beneficial effect in reducing wear. Selective FTIRM analysis shows evidence of both polymerization and monomer reactions with the alumina surface. It is believed that the surface films formed …
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The Acute and Chronic Muscle Adaptations Following six weeks of "No Load" and Traditional High Load Resistance Training
… appears to be true, independent of the external load, provided sufficient tension is achieved. PURPOSE: The purpose of this study was to remove the influence of an external load and compare the acute and chronic muscle adaptations of “No Load” training to traditional High Load training. METHODS: …
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Does Blood Flow Restriction Applied Post High-Load Exercise Augment Skeletal Muscle Growth Following Eight Weeks of Training?
… application of blood flow restriction during low load exercise has consistently been shown to augment muscle hypertrophy which has been attributed to metabolic accumulation. It remains unknown, however, whether metabolites can augment muscle growth independent of further mechanical tension, …
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Design and control of a linear bearing durability tester
… the characteristics of linear bearings under high load and high speed conditions, a machine capable of testing bearings under these conditions was created. The machine is flexible in its design, allowing testing of a wide variety of bearing styles and under many different load conditions. The …
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On fuel selection in controlled auto-ignition engines : the link between intake conditions, chemical kinetics, and stratification
… the impact fuel selection can have on the high-load limit in a stratified Compression Auto-Ignition (CAI) engine. This was accomplished by first studying the validity of the current metrics that predict when the high-load limit is reached. Temperature and fuel concentration stratification, …
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Impact of affective traits on response interference: modulations by trait negative affect, anxious arousal, and anxious apprehension
… Non-targets were homogeneous in low perceptual load (Os) and heterogeneous in high perceptual load (K,V,S,R,J). Additionally, a foil (X or N) was presented in the center or periphery (left or right) of the display. It was predicted 1) that flanker interference would increase with increasing …
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Restaurant revenue management
… practice of FCFS by 0.11% to 2.22% for low load factors, by 0.16% to 2.96% for medium load factors, and by 7.65% to 13.13% for high load factors, without increasing and occasionally decreasing waiting times compared to FCFS. The second class of models addresses reservations. We propose a two …
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The Blood Flow and Perceptual Response To Lower Body Resistance Training With and Without Blood Flow Restriction
<p>The muscular response to low-load resistance exercise in combination with blood flow restriction (BFR) is well studied but less was known about the cardiovascular response. It was also unknown what impact resistance exercise at 15% 1RM with or without BFR would have on the acute and chronic …
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Managing transient behaviors of a dual mode spark ignition-- controlled auto ignition engine with a variable valve timing system
… into two topics. First, the dynamic nature of load trajectory and several important phenomena in CAI mode were investigated. Second, the issues encountered during mode transition between SI and CAI regime were considered. Despite wide-open-throttle operation, pumping loss in CAI mode was not …
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Dual fuel conversion of a direct-injection diesel engine
… dual fuel tests were completed at intermediate load (1500 rpm, 335 N-m) and high load (1500 rpm, 580 N-m) operating conditions to determine the emissions benefits of the dual fuel conversion. Compared to diesel operation, optimized dual fuel operation at intermediate load produced a 32% decrease …
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The development and origin of muscle fatigue after hexagonal-barbell deadlift exercise of different loads and velocities: contributing to a knowledge-base for coaches to make evidence-informed decisions regarding athletic training programmes
… and human performance (chapter 2). This review highlighted that studies of performance fatigability have generally focused on locomotor exercise such as running or cycling. However, very little work has examined the influence of resistance exercise on performance fatigability. Specifically, it …
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A distributed scheduling algorithm for quality of service support in multiaccess networks
… the problems of fairness and low throughput at high load, our algorithm provides fairness and bandwidth reservation in an integrated services environment and at the same time achieves high throughput. Moreover, while most reservation-based multiaccess protocols require a centralized scheduler …
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Acute and chronic skeletal muscle response to very low load resistance exercise with and without the application of blood flow restriction in the upper body
… (EMG) in response to resistance exercise with high load [70% 1RM,(7000)], low load [15% 1RM,(1500)], low load with moderate (BRF) [15% 1RM+40%BFR(1540)], or low load with greater BFR [15% 1RM+80%BFR(1580)]. The chronic study investigated changes in MTH, strength, and endurance following …
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