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 27 for “"bolting"”.
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Design of a robotic end-effector for automated bolting
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.
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Bolting the Landscape: An Ethnography of Yosemite as a Significant Climbing Destination
<p>Yosemite Valley is a transformative landscape that helps to shape climbers’ identities and fosters a unique sense of community, which continually reinforces its status as a renowned and evolving climbing destination. The historical influence of Yosemite Valley on rock climbing began in the 1950s …
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A New Rock Bolt Design Criterion and Knowlwdge-based Expert System for Stratified Roof
Since its development in the 1920s, bolting has become the most dominant support method in underground construction. However, because of the geological environment, the design process for roof bolt systems is an art rather than a science. To quantify the selection of bolting systems a MSBT (minimum …
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Latitudinal Gradient Facilitates Adaptive Population Differentiation of Campanulastrum americanum (American Bellflower)
… initiation. Earlier flowering, along with faster bolting rate and delayed fruit maturation has assisted in maximizing reproductive fitness of southern populations in the south. While, earlier flowering, delayed fruit maturation, and delayed bolting has facilitated higher fitness of northern …
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Some factors in the use of roof bolts for mine roof control
… The new method was named “roof-bolting”. As the name implies, the lower exposed strata of the roof are bolted to the stronger less exposed strata above the mine opening. This new method has been used more and more in the past three years. At the present time over 200 companies …
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Evaluation of underground supports made of wood and other materials
… In this research, powered supports and roof bolting are not included. Evaluation of underground supports needs to take account of several factors. These factors include the mechanical behavior of the supports, the interaction between the support and the surrounding strata, the cost of the …
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Load transfer mechanism of fully grouted cable bolts.
… more than fifty years. However, failure of cable bolting systems still occurs in mine sites, as a result of insufficient load transfer between the rock mass and the cable bolt. Numerous research studies have been conducted to understand the load transfer mechanism of cable bolts in the laboratory. …
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Weed management in conventional, no-till, and transgenic corn with mesotrione combinations and other herbicides
… in the rosette stage of growth than when bolting. Absorption, translocation, and metabolism of 14C mesotrione in Canada thistle was generally low. However, higher levels of absorption and translocation and lower root metabolism of mesotrione in rosette stage plants compared to bolting …
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Geologic feature prediction using roof bolter drilling parameters
… the mine roof. Proper application of roof bolting is dependent upon knowledge of the mine roof geology.;Recently developed control and data acquisition technologies allow the drilling performance of these roof bolters to be monitored on a real-time basis. Drilling data collected from these …
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The response of sugar beet (Beta vulgaris L.) to planting method and sowing date
… This study examined the effects of treatments on bolting and its effects on sugar yield. Sowing dates covered a range from mid August to early October in the two seasons. Few bolters were found when the crop was sown in mid September (1982/83) or early October (1981/82). However, mid August sowing …
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Predictive Modelling of CFRP-Steel Double Strap Joints
… reinforcing techniques like welding and bolting, such as light weight, high strength, and corrosion resistance. Additionally, the CFRP application process is relatively easy, rapid, and labor-intensive. On the other hand, failure is more likely to happen at the bond interface due to the …
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Analysis of Direct-Soldered Power Module / Heat Sink Thermal Interface for Electric Vehicle Applications
… as compared to the conventional method of bolting the two together with a thermal grease or some other interface materials in between. However, a soldered interface typically contains a large number of voids, which results in local hot spots. This thesis describes approaches taken to reduce …
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Effects of Surface Condition on the Fatigue Behavior of CFRP-to-Steel Joints
… to conventional repairs which involve welding or bolting of new steel plates. These structures will experience some sort of irregular cyclic loading during their lifetime and to analyze these complex loading cases, small scale testing is used to evaluate the fatigue performance between the steel …
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Francis W. Dawson and Daniel H. Chamberlain: a political flirtation, 1874-1876
… in the state nonetheless led him to support a bolting group of Independent Republicans in the 1874 campaign. However, Chamberlain's attempts to secure orderly, peaceful reform soon won the praise and ultimately the complete support of Dawson and the powerful Charleston business community. The …
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Precision Delivery of Multi-Scale Payloads to Tissue-Specific Targets in Plants
… of GA₃-loaded microneedles, and promotion of bolting and inhibition flower formation by GA₃ on Arabidopsis thaliana mutant ft-10. This method is proved to be more efficient and effective in delivering GA₃ than foliar spray. Potential applications of silk-based microneedles in agriculture are …
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WHO: A Novel Wuschel-Like Homeodomain Transcription Factor in Arabidopsis
… leaves, strongly stunted roots, delayed bolting and flowering, as well as aberrant floral organs. Moreover, callus and somatic embryos formed regularly from the mutant petioles and hypocotyls on normal MS medium without any external phytohormone treatment. Morphological studies showed …
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The behaviour of composite beam-to-column flush end plate connections using blind bolts
… The recent development of the innovative blind bolting technique made it possible to connect beams to CFST columns economically without the need for access within the hollow section. However, the connections developed using this technique remain a concern for engineers due to lack of experience …
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Analysis of signal output by the ethylene receptor ETR1 from Arabidopsis
… and epinastic leaves in the air and died without bolting when grown under light. The phenotype of ers1;etr1 is more profound than that observed in the etr2--3;ein4--4;ers2--3 triple loss-of-function mutant reported previously, indicating that subfamily 1 members (ETR1 and ERS1) play a predominant …
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Non-Standard Fixed Hsla-V Military Bridge: Fabrication, Testing, and Model Simulation
… can readily be assembled in 40 foot lengths by bolting. The proposed design is modular and suitable for single spans of overall length between 40 and 200 feet, accommodating all current military design vehicles, including extreme military vehicle loads, in one or two traffic lane configurations. …
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Glued-in re-bar connection
… tools, reducing the field work to merely bolting of the joints. The construction method becomes very similar to the erection methods of the steel structures. The elements are connected by bolts or welding. Glued-in rod connections have a great potential to become a safe connection method …
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