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.
Results
Showing 1 to 20 of 41 for “"Extreme environmental conditions"”.
-
Clonal integration in Ochthochloa compressa under extreme environmental conditions
… integration and its role in resisting harsh environmental conditions, many researchers have indicated the need for further studies to understand fully the role of clonal integration and what determines the optimal strategies in various environments. In this project a series of studies were …
-
High energy density entrainment-based catalytic micro-combustor for portable devices in extreme environmental conditions
… water extractor (AWE) device in harsh environmental conditions, at temperatures ranging from 1.7°C to 43.3°C.
-
Elucidating microbial interactions, adaptations, and evolution under extreme environmental conditions in modern microbial mats from Shark Bay, Western Australia
… microbial communities are able to persist in the extreme environmental conditions (i.e., hypersalinity, periodic desiccation, UV radiation, heavy metal toxicity) that characterize these past and present environments due to the EPS that coat and protect these microbes. The ability to produce, …
-
A mathematical model to simulate physiological adjustments to extreme environments to analyse human responses to adverse environmental conditions
… among the most adaptable species on Earth, yet extreme environmental conditions impose significant limits to human performance, wellbeing, and survival. The study of human physiology in extreme environments is challenging due to the ethical and practical constraints of conducting experiments on …
-
Novel water-use strategies of Colorado wetland plants: implications for wetland water loss
… when scaled to ground area. Stomatal response to environmental stimuli differed from upland stomatal responses, which suggests that wetland plants prioritize carbon uptake over hydraulic safety and do not align with current paradigms for stomatal responses to vapor pressure deficit, leaf water …
-
The effects of high pressure and temperature environments on the properties of 6061-T651 aluminum
… required tests as well as to operate under the extreme environmental conditions"--Abstract, page iii.</p>
-
Up to the waist in mud! : the assessment and application of earth-derivative architecture in rural Bangladesh
… material in the context of rural Bangladesh. In extreme environmental conditions of annual floods, rain and atmospheric humidity, the use of earth, the most readily available building material, faces serious constraints. Yet examples of earthen architecture abound there. Other parts of the world …
-
Triggered infrared emitter displays for individual identify friend-or-foe (IIFF) and vehicular mounted indentify friend-or-foe (VMIFF) devices.
… of activation and observation, performance under extreme environmental conditions, and emitter intensity decay as a function of multiple activations and time. Key results include observation at distances in excess of 700 meters and device functionality in a temperature range from -40 0C to 71 0C. …
-
Performance of aerogel composite and foam insulations
… subjected to various temperature and humidity conditions and their thermal performance during several weeks of controlled environmental exposure has been observed. Several commercially available insulating materials (three aerogel composite blankets, two extruded poly- styrene foams (XPS) and …
-
Feasibility study of long-life micro fuel cell power supply for sensor networks for space and terrestrial applications
… power to sensor modules in challenging field conditions with operational lives extending from many months to years. The scope of this concept can be extended to power devices such as micro-robots and small unmanned aerial vehicles operating in extreme environmental conditions for sustained …
-
Changes in the seasonal activity of bats occuring in the Kunene region, Namibia: Influence of environmental factors
The Kunene region is an arid region with extreme environmental conditions. Understanding how environmental conditions affect bat activity, number and distribution is important for assessing activity and abundance. Monthly bat activity and the effect of environmental factors (temperatures, moon …
-
The effects of different thermal environmental conditions on the performance of automatic and controlled processes
… research investigated the effect of four thermal environmental conditions on the performance of automatic and controlled processes. The environmental conditions included temperature and relative humidity combinations of (1) 25°C with 60% r.h., (2) 33°C with 38% r.h., (3) 33°C with 66% r.h., and …
-
Weighing the Options: Assessing Two-A-Day Practices in Collegiate Football
… athletes involved in collegiate football during extreme environmental conditions. In addition, this study displays the cost effectiveness of both medical personnel and hydration supplies in the reduction of heat related illnesses during two a day practice sessions.
-
Assessment of flagellate diversity at deep-sea hydrothermal vents using the combined approach of culture-dependent and culture-independent methods
… tolerance and/or adaptability to a wide range of environmental conditions. Experiments under vent conditions of high pressure and high concentrations of metals and sulfide showed that some of these species are very tolerant to extreme environmental conditions.
-
Biochar as a soil amendment to enhance petroleum hydrocarbon degradation in northern landfarms
Extreme environmental conditions in northern regions slows efforts to remediate petroleum hydrocarbon (PHC) contaminated soils through conventional landfarming practices. Thus, cost-effective soil remediation strategies that are active under frozen conditions and specific to cold regions are in …
-
Structural and functional insights to Bacillus spore germination and toxin engineering for sustainable agriculture
… exhibit extraordinary resilience, surviving extreme environmental conditions through dormancy and reactivating under favourable conditions via germination. Germination is triggered by specific environmental signals detected by germinant receptors, initiating a cascade of events that culminate …
-
Optimisation of Valve Regulated Lead Acid Battery Design for High Power Applications
… battery subjected to long standing times in hot environmental conditions. It is important to note that these properties may be adjusted for different products and operating environments. <br/><br/>The technique presented in this thesis was tested and verified by using results obtained from …
-
Hydration Delivery Systems for Wildland Firefighters
… (WLFF) experience long arduous work shifts under extreme environmental conditions. Previous studies by our lab have demonstrated that maintenance of euhydration during fire suppression can be difficult. Purpose: The purpose of this study was to examine the efficacy of water bottle use vs. sipping …
-
Hydration Delivery Systems for Wildland Firefighters
… (WLFF) experience long arduous work shifts under extreme environmental conditions. Previous studies by our lab have demonstrated that maintenance of euhydration during fire suppression can be difficult. Purpose: The purpose of this study was to examine the efficacy of water bottle use vs. sipping …
-
Assessing and modelling extremal dependence in spatial extremes
… must be built such that they can withstand extreme environmental conditions (e.g., high waves and strong winds) that may occur during their lifetime. This means that it is essential to quantify probabilities of the occurrence of such extreme events. However, a difficulty arises in that there …
Page 1 of 3