Relevant bibliographies by topics / Bolting

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Bolting'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 May 2024

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Journal articles on the topic "Bolting"

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Wu, Hao, Zhilong Zhang, Zhiyuan Liu, Qing Meng, Zhaosheng Xu, Helong Zhang, Wei Qian, and Hongbing She. "Comparative Transcriptome Analysis of Gene Expression and Regulatory Characteristics Associated with Different Bolting Periods in Spinacia oleracea." Genes 15, no. 1 (December 26, 2023): 36. http://dx.doi.org/10.3390/genes15010036.

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Bolting is a symbol of the transition from vegetative to reproductive growth in plants. Late bolting can effectively prolong the commercial value of spinach and is of great importance for spinach breeding. Bolting has complex regulatory networks, and current research on spinach bolting is relatively weak, with specific regulatory pathways and genes unclear. To clarify the regulatory characteristics and key genes related to bolting in spinach, we conducted a comparative transcriptome analysis. In this study, 18 samples from three periods of bolting-tolerant spinach material 12S3 and bolting-susceptible material 12S4 were analyzed using RNA-seq on, resulting in 10,693 differentially expressed genes (DEGs). Functional enrichment and co-expression trend analysis indicated that most DEGs were enriched in the photoperiod pathway, the hormone signaling pathway, and the cutin, suberin, and wax biosynthetic pathways. According to the weighted gene co-expression network analysis (WGCNA), SpFT (SOV4g003400), SOV4g040250, and SpGASA1 (SOV6g017600) were likely to regulate bolting through the gibberellin and photoperiod pathways, and SpELF4 (SOV1g028600) and SpPAT1 (SOV4g058860) caused differences in early and late bolting among different cultivars. These results provide important insights into the genetic control of bolting in spinach and will help elucidate the molecular mechanisms of bolting in leafy vegetables.
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Cramer, Christopher S. "Performance of Fall-sown Onion Cultivars Using Four Seeding Dates." Journal of the American Society for Horticultural Science 128, no. 4 (July 2003): 472–78. http://dx.doi.org/10.21273/jashs.128.4.0472.

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As fall-sown onions are seeded earlier, an increase in premature seedstalk (bolting) incidence is observed for bolting-susceptible cultivars. The mechanism of resistance for bolting-resistant cultivars is not well known. Four fall-sown cultivars (Daybreak, NuMex Mesa, NuMex Sweetpak, Texas Early White), that differed in their bolting susceptibility, were seeded on four separate dates in September, each one week apart, in Las Cruces, N.M., to observe their growth and performance at each seeding date. Plant height and leaf number were measured monthly throughout the growing season from 10 plants in each plot. Prior to harvest, the number of plants that bolted were counted. When 80% of the plants in a plot were mature, the bulbs were harvested and the maturity date, disease resistance, bulb yield, and percentage of single centers were recorded. In general, earlier seeding dates resulted in larger plants with more leaves than later seeding dates when compared early in the growing season. By harvest time, plants from later seeding dates were comparable in height and had produced more leaves than earlier seeded plants. Plant height of `NuMex Mesa' (bolting resistant) was less than the plant height of bolting-susceptible cultivars. Bolting-resistant and bolting-susceptible cultivars produced similar numbers of leaves throughout the season. The mechanism of bolting resistance for `NuMex Mesa' may be a smaller plant size and/or a greater plant size required for receptivity to bolting-inducing temperatures as compared to bolting-susceptible cultivars. In general, cultivars exhibited less bolting, later maturity dates, and an increase in bulb yield with a delay in seeding.
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Fan, Li, Yan Wang, and Yong Kun He. "Meteorological Condition Prediction Research of the Stem Mustard Premature Bolting in early Season." Advanced Materials Research 955-959 (June 2014): 687–93. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.687.

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With the demand of the stem mustard premature bolting forecast in Fuling area, from the biology characteristics of stem mustard’s early bolting, the paper analyzes the two-season planting test data of stem mustard in 2011, and screens the significant meteorological factors that affecting the stem mustard premature bolting, which is average air temperature of the first 9-12 days after sowing, the maximum temperature and precipitation days in the stage of sowing - 3 leaf, and then establishes the prediction model of stem mustard premature bolting by Logistic equation. Finally, the planting test data in 2012 are used to test the model, which can better simulate the occurrences of stem mustard premature bolting, and forecast has good feasibility. Keyword: Stem mustard; Premature bolting; Two-season; Prediction
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Wang, Yubo, Bingyan Li, Yunfeng Li, Wei Du, Yueting Zhang, Yingyan Han, Chaojie Liu, Shuangxi Fan, and Jinghong Hao. "Application of exogenous auxin and gibberellin regulates the bolting of lettuce (Lactuca sativa L.)." Open Life Sciences 17, no. 1 (January 1, 2022): 438–46. http://dx.doi.org/10.1515/biol-2022-0043.

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Abstract Plant bolting is regulated and controlled by various internal and external factors. We aimed to provide an improved method for breeding to determine whether there is a synergism between hormones and to explore the regulatory effect of plant hormones on the bolting of leaf lettuce. Lettuce plants were sprayed with exogenous auxin and gibberellin separately or in combination. The specific bolting period was determined by the change in stem length and cytological observation. The dynamic changes in endogenous hormones and genes closely related to bolting were analyzed. Treatment with gibberellin alone and the combined application of auxin and gibberellin induced bolting on the fourth day, and treatment with auxin alone resulted in bolting on the eighth day. In the early bolting stage, the auxin contents in the stems of the treatment groups, especially the combined gibberellin and auxin group, were higher than those of the control group. After the application of exogenous auxin and gibberellin, we found that the expression of the ARF8 and GID1 genes was upregulated. Based on the results of our study, combined treatment with exogenous gibberellin and auxin was the best method to promote the bolting of leaf lettuce, and the ARF8 and GID1 genes are closely related to this process.
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Borkowski, Jan, and Leszek S. Jankiewicz. "Inhibition of spinach bolting by growth regulators." Acta Agrobotanica 32, no. 2 (2015): 233–38. http://dx.doi.org/10.5586/aa.1979.021.

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Spinach (<i>Spinacia oleracea</i> L.) plants must be harvested during a short period of time because they bolt just after producing some edible leaves. Maleic hydrazide (MH) and its commercial preparation "Antyrost" were found to inhibit bolting very strongly. The preparation Off-shoot-O showed very weak activity in suppressing bolting but diminished markedly the resistance of spinach plants to fungus diseases. Triiodobenzoic acid stimulated bolting, and the retardant succinic acid-2-2-dimethylhydrazide (SADH) did not affect bolting. Application of MH to inhibit spinach bolting cannot be recommended in practice before investigating the residues of this compound in leaves.
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Liu, Fu Sheng, Lian Guo Wang, Lei Sun, and Gang Gang Dong. "Researches on the Relationship between Characteristic Parameters of Surrounding Rock and Structural Parameters of Bolting-Grounting Support Body Based on the Ideal Elastic-Plastic Support Model." Applied Mechanics and Materials 170-173 (May 2012): 605–10. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.605.

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For the time being the theory about the failure mechanism of the soft rocks, mechanical behavior of bolting-grouting support body in soft rocks has not been fully comprehended. The design of the bolting-grouting support is mostly based on experience and by analogy, and the theoretical analysis results are far more different with the practical engineering. To solve the problem, the researches on the bolting-grouting support mechanism of the soft rocks and the interrelationship between characteristic parameters of the surrounding rocks and structural parameters of bolting-grouting support body are carried out based on the nested models of original surrounding rocks and the bolting-grouting structure. The qualitative and quantitative relationship between characteristic parameters of the surrounding rocks and structural parameters of bolting-grouting support is found out. At the same time, it could also provide beneficial reference to the practical engineering design and construction.
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Hao, Jing-Hong, Li-Li Zhang, Pan-Pan Li, Yan-Chuan Sun, Jian-Ke Li, Xiao-Xiao Qin, Lu Wang, et al. "Quantitative Proteomics Analysis of Lettuce (Lactuca sativa L.) Reveals Molecular Basis-Associated Auxin and Photosynthesis with Bolting Induced by High Temperature." International Journal of Molecular Sciences 19, no. 10 (September 28, 2018): 2967. http://dx.doi.org/10.3390/ijms19102967.

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Bolting is a key process in the growth and development of lettuce (Lactuca sativa L.). A high temperature can induce early bolting, which decreases both the quality and production of lettuce. However, knowledge of underlying lettuce bolting is still lacking. To better understand the molecular basis of bolting, a comparative proteomics analysis was conducted on lettuce stems, during the bolting period induced by a high temperature (33 °C) and a control temperature (20 °C) using iTRAQ-based proteomics, phenotypic measures, and biological verifications using qRT-PCR and Western blot. The high temperature induced lettuce bolting, while the control temperature did not. Of the 5454 identified proteins, 619 proteins presented differential abundance induced by high-temperature relative to the control group, of which 345 had an increased abundance and 274 had a decreased abundance. Proteins with an abundance level change were mainly enriched in pathways associated with photosynthesis and tryptophan metabolism involved in auxin (IAA) biosynthesis. Moreover, among the proteins with differential abundance, proteins associated with photosynthesis and tryptophan metabolism were increased. These findings indicate that a high temperature enhances the function of photosynthesis and IAA biosynthesis to promote the process of bolting, which is in line with the physiology and transcription level of IAA metabolism. Our data provide a first comprehensive dataset for gaining novel understanding of the molecular basis underlying lettuce bolting induced by high temperature. It is potentially important for further functional analysis and genetic manipulation for molecular breeding to breed new cultivars of lettuce to restrain early bolting, which is vital for improving vegetable quality.
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Díaz-Pérez, Juan C., Albert C. Purvis, and J. Thad Paulk. "Bolting, Yield, and Bulb Decay of Sweet Onion as Affected by Nitrogen Fertilization." Journal of the American Society for Horticultural Science 128, no. 1 (January 2003): 144–49. http://dx.doi.org/10.21273/jashs.128.1.0144.

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Bolting causes significant economic losses in sweet onion (Allium cepa L.) production. Although temperature and photoperiod are considered to be the main factors that initiate bolting in onions, preliminary results suggested that low N fertilization rates increased bolting. The objective of our study was to determine the relationships of bolting, yield and bulb decay with N fertilization rates. The N fertilization rates applied ranged from the infraoptimal to the supraoptimal (from 102 to 302 kg·ha-1 N). Shoot and bulb N content increased with increasing N rates, but there were no differences in the respective shoot and bulb N contents among cultivars. Bolting incidence declined steadily with increasing N fertilization rates up to 197 kg·ha-1 N. Bolting incidence was among the highest in the cultivar Pegasus. The percent of decayed bulbs also increased at a steady rate with the rate of N applied. Total (14.7 t·ha-1) and marketable (0.8 t·ha-1) yields at the lowest N rate (102 kg·ha-1 N) were lower (P ≤ 0.01) than those at higher N rates. Rates of N ≥145 kg·ha-1 had no significant effect on either total (mean = 33.6 t·ha-1) or marketable (mean = 21.6 t·ha-1) yields. Losses in marketable yield were primarily a combination of bolting and bulb decay and were minimized at 162 kg·ha-1 N. Yield losses at low N rates were mostly due to bolting while yield losses at high N rates were mostly due to decay. Thus, excess applications of N fertilizer should be avoided since they have little effect on yields or bolting but they increase bulb decay.
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Xu, You Lin, Hui Zhang, and Wei Zheng. "Rock Bolting Numerical Simulation Research and Application of the Face Breakthough." Applied Mechanics and Materials 105-107 (September 2011): 2239–43. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.2239.

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This paper analyzes the importance of rock bolting in coal mining, and the difficult of using rock bolting in breakthough with the affect of mining, adopt hydraulic fracturing and coal-rock mass strength test methods to test the seam stress and rock strength. Make the numerical simulation of break though bolting solutions in coal mine roadway by using FLAC3D software, simulate the different distributions of pre-stressed in coal-rock with three situations, the same raw distance but different space, the same space but different raw distance, impose different preload on the roof anchor in the rock bolting of mine roadway breakthough. Then determine a reasonable bolting solution of coal mine roadway according to the case of prestressed in coal-rock.
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Rendueles, César. "Common-Pool Resources in Rock Climbing." Sociology of Sport Journal 32, no. 4 (December 2015): 436–51. http://dx.doi.org/10.1123/ssj.2014-0152.

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Sport climbing relies materially on the existence of routes equipped with bolts: vertical itineraries with anchors that allow climbers a safe ascent. Without bolting, sport climbing simply would not exist. In many countries, bolting is an altruistic individual activity that is usually neither organized nor regulated. Sport climbing bolting requires expensive hardware and sophisticated technical skills. However, equippers earn no money or prestige for this effort, which benefits many climbers. This paper develops a sociological approach to rock climbing bolting as a common-pool resource facing a deep crisis. In its early years, bolting was ruled by generalized reciprocity. The popularization of sport climbing quickly changed this framework. A small group of very active equippers has become net providers of public goods without compensation in economic or status terms.
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Dissertations / Theses on the topic "Bolting"

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Kristjánsson, Gunnar. "Rock bolting and pull out test on rebar bolts." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for geologi og bergteknikk, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-25429.

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Pull out tests were carried out in the laboratory of rock mechanics at Norwegian University of Science and Technology (NTNU) for the purpose of determining the critical embedment length of fully grouted rebar bolts. The 20-mm rebar bolts and the grouting material, “the Rescon Zinc bolt cement” used in the testing are widely used in underground projects in Norway. Different embedment lengths, ranging from 10 cm to 40 cm, were employed in the tests under different water-cement ratios for the grouting mortar. The critical embedment length for a given water-cement ratio is determined on the diagram of the pull - out load versus the embedment length. A chart of the critical embedment bolt length versus the water-cement ratio as well as the uniaxial compressive strength of the cement mortar is established based on the testing results. In the theoretical part of the thesis, the main focus is on rock bolting. Bolting principals are introduced along with different types of rock bolts, design of bolting systems and stability problems caused by rock stresses. In the final part of the theoretical part the procedure of pull out testing is described and the load bearing capacity of rock bolts are categorized into the groups in accordance with load deformation performance. Finally, previous pull out test research is presented.
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Holmes, Helen Frances. "The role of gibberellin in bolting in sugar beet." Thesis, University of Cambridge, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709529.

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Dean, David L. "Design of a robotic end-effector for automated bolting." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/100065.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.
MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING
Bibliography: leaf 111.
by David L. Dean, Jr.
M.S.
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Taylor, Jemma Louise. "Delayed bolting in rocket for improved quality and greater sustainability." Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/77863/.

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Wild rocket (Diplotaxis tenuifolia) has recently become a popular salad leaf in the UK due to its peppery taste. It is grown widely in Italy but is now being produced in Spring and Summer in England. It is part of the Brassicaceae family and thus has a high level of homology at the DNA level to other Brassica species and Arabidopsis. This project aims to produce late bolting genotypes of rocket to incorporate into commercial breeding programmes. Delayed bolting is important as current varieties flower at unpredictable times and often earlier than desired. This is a problem because when rocket flowers it becomes unsaleable. Ethyl methanesulphonate (EMS) was used to generate a mutant population of rocket. Late bolting lines were selected and whole genome sequencing was used to identify single nucleotide polymorphisms (SNPs) induced by the EMS which may be a cause of the late bolting phenotype. Six flowering pathway genes have been isolated from rocket and have been tested to see if they can functionally complement A. thaliana knockout lines in these genes. Further work was carried out to investigate how these genes were expressed over diurnal and developmental time courses to understand their function in the flowering time pathway in rocket. Together, these results show that most of the flowering pathway genes isolated from rocket are functional orthologues of those in Arabidopsis. The photoperiodic and vernalization requirements of rocket were investigated and it was found that rocket does not have a vernalization requirement and is a facultative long day plant. Targeted mutagenesis using clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR associated system (cas9) was employed for the introduction of mutations into the FLOWERING LOCUS T (FT) gene in rocket and Arabidopsis. Many late flowering Arabidopsis lines were identified and sequencing revealed the successful manipulation of the FT gene. Two late bolting rocket lines were also identified. Overall, the project aims were achieved as late bolting rocket lines have been produced and will be incorporated into a rocket breeding programme.
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Ahmed, Marfique. "Strengthening of reinforced concrete beams by bolting steel plates to their sides /." Title page, abstract and contents only, 1996. http://web4.library.adelaide.edu.au/theses/09ENS/09ensa286.pdf.

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Debenham, Gunnel Birgitta. "Bolting and flowering mechanisms in sugar beet, Beta vulgaris, ssp vulgaris (L)." Thesis, University of Nottingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311840.

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Mirabile, Benjamin T. "Geologic feature prediction using roof bolter drilling parameters." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=3216.

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Thesis (M.S.)--West Virginia University, 2003.
Title from document title page. Document formatted into pages; contains xii, 84 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 83).
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Abbott, Aaron. "The isolation of flowering time genes from lettuce to enable the manipulation of bolting time." Thesis, University of Warwick, 2010. http://wrap.warwick.ac.uk/35099/.

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The time of bolting is an important factor in lettuce production because it affects the yield and quality of the harvested crop. Bolting is promoted by higher temperatures and is an increasing problem for growers with the current trend for warmer summers. Lettuce plants that are in the early stages of bolting are visibly indistinguishable from non-bolting plants, however there are changes in the biosynthesis of secondary metabolites which are produced to protect the young floral bud from insect attack. These compounds give the lettuce plant a bitter taste and render the crop unsaleable. The development of late bolting varieties, which would have a greater ‘holding ability’ in the field, would result in reduced crop losses and an extension to the growing season. In many plants, the timing of the transition from vegetative growth to flowering is controlled by environmental cues which serve to communicate growth conditions favourable for sexual reproduction and seed maturation. Studies in Arabidopsis have led to the identification of several different pathways that come together to regulate flowering time. Little research has been done on these response pathways in lettuce, however, research has shown that components of these pathways are conserved between Arabidopsis and other crop species. The aim of this project is to isolate genes regulating flowering time in lettuce in order that novel alleles of these genes can be used to manipulate bolting time. A lettuce BAC library has been screened and homologues of eight Arabidopsis flowering time genes, principally from the autonomous pathway, have been isolated. Functional orthologues of FLOWERING LOCUS T (FT) and the autonomous pathway gene, FLK have been characterised in lettuce, suggesting that there is conservation of the genes involved in flowering time in Arabidopsis and lettuce. Lettuce lines with a range of bolting times, including lines which bolt significantly later than wild-type have been identified from EMS mutagenised populations of cultivated lettuce and a diversity set of wild lettuce. Homozygous lines from a Lactuca sativa cv. Larissa EMS population with a reproducible late bolting phenotype when tested under commercial growing conditions have been identified. These lines have been made available to Rijk Zwaan® for inclusion in future breeding programs aimed at delaying bolting and improving the ‘holding’ ability’ of commercial lettuce crops. Genomic sequence of selected lettuce flowering time genes have been compared between the late bolting lines and wild-type looking for polymorphisms that may account for the late bolting phenotype. Polymorphisms within these genes were identified in some of the late bolting lines, however through analysing the polymorphism in segregating backcross populations they have been shown not to be causing the late bolting phenotype. Transcriptome sequencing has also been performed to identify polymorphisms in other, possibly novel, genes which may be causing the late bolting phenotype, as yet, no mutation segregating within the late bolting lines has been identified.
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Ramin, Ali Akbar. "Manipulation and predictive modelling of bolting and flowering in celery (Apium graveolens L. var. dulce)." Thesis, University of Nottingham, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254417.

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Finfinger, Gerald L. "A methodology for determining the character of mine roof rocks." Morgantown, W. Va. : [West Virginia University Libraries], 2003. http://etd.wvu.edu/templates/showETD.cfm?recnum=2834.

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Thesis (Ph. D.)--West Virginia University, 2003.
Title from document title page. Document formatted into pages; contains xv, 214 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 92-94).
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Books on the topic "Bolting"

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Stephansson, Ove. Rock Bolting. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203740507.

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Choquet, Pierre. Rock bolting practical guide. [Ottawa]: Energy, Mines and Resources Canada, 1991.

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Professional users handbook for rock bolting. 2nd ed. Clausthal-Zellerfeld, Germany: Trans Tech Publications, 1994.

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Dolinar, Dennis R. Entry stabilization utilizing rib bolting procedures. Washington, DC: Bureau of Mines, United States Dept. of the Interior, 1990.

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Dolinar, Dennis R. Entry stabilization utilizing rib bolting procedures. Washington, D.C: U.S. Dept. of the Interior, Bureau of Mines, 1991.

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Kulak, Geoffrey L. High strength bolting for Canadian engineers. Willowdale, Ont: Canadian Institute of Steel Construction, 2005.

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Hutchinson, Douglas Jean. Cablebolting in underground mines. Richmond, B.C: BiTech Publishers, 1996.

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E, Bevan J., ed. Development of rapid-setting inorganic grouts. Pittsburgh, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1987.

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Serbousek, M. O. Linear load-transfer mechanics of full-grouted roof bolts. Pittsburgh, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1987.

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Fraley, J. E. Development of rapid-setting inorganic grouts. Pittsburgh, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1987.

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Book chapters on the topic "Bolting"

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Shi, Gen-Hua, and Richard E. Goodman. "Keyblock bolting." In Rock Bolting, 143–67. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203740507-14.

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Bywater, S., and P. G. Fuller. "Cable support of lead open stope hangingwalls at Mount Isa Mines Limited." In Rock Bolting, 539–55. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203740507-54.

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Thurner, Heinz F. "Detection of invisible faults on rockbolts in-situ." In Rock Bolting, 477–80. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203740507-48.

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Marchuk, A. "Results of stressed anchorage study at the Bratsk dam." In Rock Bolting, 593–98. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203740507-60.

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Sapegin, D. D., I. V. Pridorogina, and I. V. Kozyreva. "Experimental studies on strength of rock bolting." In Rock Bolting, 233–39. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203740507-22.

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Jašarević, Ibrahim, Željko Tavas, Ivan Muhovec, and Braslav Nesrsta. "Instrumentation of rock bolts and cable anchors." In Rock Bolting, 481–97. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203740507-49.

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Dhar, B. B., S. Ratan, H. Reddi, and R. Mehta. "Laboratory study for the design of optimum rock-bolting in bedded strata." In Rock Bolting, 219–23. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203740507-20.

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Xueyi, Sun. "Grouted rock bolt used in underground engineering in soft surrounding rock or in highly stressed regions." In Rock Bolting, 93–99. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203740507-9.

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Selldén, H. "Cable bolting in Fabian ore body, Malmberget." In Rock Bolting, 563–69. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203740507-56.

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Scott, James J. "Friction Rock Stabilizer impact upon anchor design and ground control practices." In Rock Bolting, 407–17. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203740507-38.

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Conference papers on the topic "Bolting"

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Oldiges, Donald, and Scott Hamilton. "Moly Disulfide in Bolting Applications." In ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63361.

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Molybdenum disulfide (MoS2) is a popular lubricant, however a study completed in the early 1990’s stated that this type of lubricant can lead to stress corrosion cracking (SSCC) of the bolting materials. However, over the past 20 years, many bolting applications using molybdenum disulfide based compounds have been found to provide better galling resistance to the bolt assembly than many other components. It has also been shown to have a few other less desirable traits such as potential for corrosion in specific environments. Therefore, for successful bolting applications one must consider all the pros and cons of the anti-seize compound they select. One of the negative properties of molybdenum compounds is their link to SSCC on some alloys in specific environmental conditions. This paper focuses on corrosion potential.
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Gielen, Jan, Elisabeth Wremerth-Weich, Pierre Pin, Petra Van Roggen, Thomas Kraft, Karsten Harms, Gerhard Steinrucken, and Rebecca Larson. "Bolting control in sugar beet." In American Society of Sugarbeet Technologist. ASSBT, 2009. http://dx.doi.org/10.5274/assbt.2009.27.

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Gosling, Martin C. "Improved Turbine Cylinder Bolting System." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-524.

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This paper describes the design and development of a new Cylinder Bolting System to replace the Main Joint Hardware for both Combustion (and Steam) Turbine applications. The new bolts are designed to be hydraulically tensioned to the specified preloed and utilize ultrasonic verification of elongation. The new Bolting System uses a reduced number of components in each assembly and the individual components themselves are of a simplified design. The new hardware can be applied to new equipment without modification and retrofitted to customer owned equipment as a direct replacement for existing joint hardware. The prototype, production and field testing of this hardware, the installation tooling and ultrasonic elongation measuring equipment is described. This testing has shown significant savings in assembly and disassembly cycle times even after prolonged exposure to turbine operating temperatures in a corrosive environment. The new design of bolting is now standard equipment for the CW251B11/B12 Combustion Turbine manufactured by Westinghouse P.G.B.U.
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Ji, Guomin, Madjid Karimirad, Frank Klæbo, and Per-Christian Irgens. "Integrity Assessment of Hot Bolting Tool." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54652.

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Hot Bolting is the practice of removing and replacing or freeing and re-tightening bolts on live operating piping and equipment while the system is pressurized. It is potentially hazardous and the utmost caution needs to be exercised when planning and carrying it out. The hot bolting tools designed by Irgens Engineering AS aim to establish a safe barrier for flange connections during the hot bolting operation. Their application would extend the hot bolting operation, increase the safety and simplify the working process. Qualification of new hot bolting tools was carried out by the joint efforts of producer, operator and classification society. The paper addresses a part of the integrity assessment of the new hot bolting tools. The nonlinear finite element analyses were performed by ABAQUS for sequential loading during hot bolting operation under the temperature specified by operator and the nonlinear contact interactions between different components were taken into account in the analysis. In the present study, the structural integrity was investigated for 4″ class 1500 flange with ring gasket and class 150 flanges with IFG gasket of four different dimensions (1/2″, 1.5″, 3″, and 8″). The gasket stress and strain as well as contact pressure of the gasket were studied to investigate the possible leakage. The test was performed for 4″ class 1500 flange with ring gasket by Irgens Engineering AS, and the comparison between analysis and test results showed good agreement both for the gap between flange just outside ring gasket and the flange bolt force.
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M S Venkata, Ramayya. "Application of nanotechnology for underground roof bolting." In Recent Advances in Rock Engineering (RARE 2016). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/rare-16.2016.39.

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Mancovsky, Justin, and Jarod Ferriera. "Optimizing Bolting Configurations in a Pressure Vessel." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11561.

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Abstract Control valve standards and guidelines (specifically ASME B16.34), which have been in place for over 50 years, have undergone incremental changes. These standards are important as they prevent field failure by maintaining system performance and ensuring the safety of workers and other components in proximity to valves. New control valve technologies represent a significant alteration in valve geometry and operating characteristics. During the development, the valve body geometry and design requirements were closely examined. The authors have identified opportunities for adjustments to ASME B16.34 design requirements through the review of related standards and the process of design optimization. Specifically, this paper reviews the design requirements for valve body joints and their bolting configurations. It examines bolt properties, including yield stress, proof strength, and allowable stress, through the ASME Boiler and Pressure Vessel Code [1], ASME B16.34 [2], ASME B16.5 [3], and ASME B31.3 [4]. It is proposed that the design requirements found in ASME B16.34 Section 6.4, Valve Joints, be adjusted such that the allowable stress limit for high strength bolts can be fully utilized. Finite Element Analysis is performed to examine those dynamic loading scenarios that are accounted for in the determination of allowable stress - temperature gradients (which cause pipe expansion and contraction), cyclic fatigue, vibration, impact (flashing or hydraulic shock), seismic events, and live loads (ice/snow). Data from the analysis is presented to show that the modified bolting configuration can withstand the maximum pressure and temperature requirements. Alternative bolting configurations can be shown to conform to the allowable stress requirements, allowing for design optimizations that reduce the overall size and weight of a valve. Modifications to ASME B16.34 and ASME B16.5 are therefore recommended. When the proposed bolting configuration was applied to a DN25 valve, we were able to achieve weight savings of 4 lbs., along with a 0.6” reduction in outer diameter. These optimizations allow for manufacturing cost savings including cost of hardware, raw materials, and machining. This optimization can be extrapolated for greater savings with larger valve designs.
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Choi, Taeyong, Hyunmin Do, Dongil Park, Chanhun Park, and Jinho Kyung. "Bolting with the industrial dual-arm robot." In 2014 11th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI). IEEE, 2014. http://dx.doi.org/10.1109/urai.2014.7057464.

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Mo, Yung-Hak, Byung-Wook Woo, Yun-Geun Choe, Jung-Min Park, and Myo-Taeg Lim. "Bolting robot assistance system using image processing." In 2010 International Conference on Control, Automation and Systems (ICCAS 2010). IEEE, 2010. http://dx.doi.org/10.1109/iccas.2010.5669922.

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Chen, G. (Sheng), L. Huang, J. Y. Chang, and L. B. Chen. "Intelligent Diagnosis of Bolting System Under Dynamic Impact." In ASME 2013 Conference on Information Storage and Processing Systems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/isps2013-2931.

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The properties of fasteners as significant parts in varied engineering systems have been widely investigated [1–3], from hard disk drive devices to construction ground control. These problems are complex in nature because every bolting involves different sources of nonlinear and uncertainty characteristics. The interfaces forces such as contact forces, friction forces and bonding are not known in reality. The base forces and deformation could be redistributed non-uniformly in the presence of complex loadings such as shock and impact. Most of the reported studies focused on the design issues, characterization of the linear dynamic properties and energy dissipation of bolting system as well as using bolts with integrated detecting systems or dynamometers. The capability to assess the interface properties of bolting system is important for mechatronics, mechanical, civil and mining engineering [1–4]. Even though some conventional approaches have been used to infer bolting integrity, the diagnosis technology has been lacking. This study is conducted to explore the possibility of the diagnosis bolting interface integrity under impact by using accelerometer signal. The statistical pattern identification such as artificial neural network and support vector machine is used to diagnose the bolting integrity. By integrating the analysis and experimental data, an ANN is established as a nonparametric model to predict the system properties. Numerous numerical and experimental researches have been conducted to characterize the typical bolting system, which enables extraction of varied dynamic features from different mechanisms associated with the failures. This kind of database could be used as feature to characterizing the effect of complex loads on bolting for ANN training. To further illustrate the feature extraction, we investigated system models. Due to its adaptive and nonlinear input–output transformation capabilities, artificial neural network (ANN) has been widely applied in the field of pattern and system recognition. The proposed approach is capable of monitoring the stress/strain history and integrity of bolting interface with the goal of detecting structural damage and defects. The results from simulation, testing and ANN identification demonstrated the high performance of the proposed approach compared with conventional ones. In the following, an approach is proposed to reliably estimate the dynamic properties of a bolt-surrounding solid mass specimen using its impact response signal. The developed approach can be readily extended to the bolting connection in other systems such as mechanical and mechatronics systems.
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Wallace, Wayne, and Peter J. Carrato. "Squirter™ DTI’s Make SCR/HRSG Bolting Easy." In 2002 International Joint Power Generation Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ijpgc2002-26018.

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Field installation and inspection of structural bolts in SCR’s and HRSG’s consume thousands of man-hours. Bolts are installed by various qualities of labor: ironworkers, boilermakers, pipefitters, millwrights, laborers, or non-union workers, especially in offshore locations. Project schedules require rapid assembly of steelwork so that the mechanical systems can be located and made operational in the least possible time. Tightening specifications for bolts used in these applications change frequently, and field personnel often have difficulty keeping abreast of the changes. Direct Tension Indicating (DTI) washers have made bolt tightening in these applications more or less foolproof for twenty or more years, but their installation and inspection has been labor-intensive. With the development of the DTI ‘Squirter Washer’, bolts can be tightened and inspected in about one-half the time previously devoted to this operation. Duke/Fluor Daniel, Bechtel, Babcock & Wilcox, The Industrial Company, and other contractors are now using Squirter DTI’s and sharing the savings with their client power project owners.
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Reports on the topic "Bolting"

1

Choquet, P. Rock bolting practical guide. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/305079.

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Syd S. Peng. EVALUATION OF ROOF BOLTING REQUIREMENTS BASED ON IN-MINE BOLTER DRILLING. Office of Scientific and Technical Information (OSTI), July 2002. http://dx.doi.org/10.2172/819906.

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Syd S. Peng. Evaluation of Roof Bolting Requirements Based on In-Mine Roof Bolter Drilling. Office of Scientific and Technical Information (OSTI), June 2004. http://dx.doi.org/10.2172/893088.

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Mackey, T. C., and J. V. Egger. Bolting sequence for attaching the container to the strong-back for 241SY101. Office of Scientific and Technical Information (OSTI), October 1994. http://dx.doi.org/10.2172/10189766.

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Syd S. Peng. EVALUATION OF ROOF BOLTING REQUIREMENTS BASED ON IN-MINE ROOF BOLTER DRILLING. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/836111.

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Syd S. Peng. EVALUATION OF ROOF BOLTING REQUIREMENTS BASED ON IN-MINE ROOF BOLTER DRILLING. Office of Scientific and Technical Information (OSTI), January 2005. http://dx.doi.org/10.2172/837258.

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Syd S. Peng. EVALUATION OF ROOF BOLTING REQUIREMENTS BASED ON IN-MINE ROOF BOLTER DRILLING. Office of Scientific and Technical Information (OSTI), April 2005. http://dx.doi.org/10.2172/839119.

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Syd S. Peng. EVALUATION OF ROOF BOLTING REQUIREMENTS BASED ON IN-MINE ROOF BOLTER DRILLING. Office of Scientific and Technical Information (OSTI), January 2003. http://dx.doi.org/10.2172/825234.

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Syd S. Peng. EVALUATION OF ROOF BOLTING REQUIREMENTS BASED ON IN-MINE ROOF BOLTER DRILLING. Office of Scientific and Technical Information (OSTI), April 2004. http://dx.doi.org/10.2172/826266.

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Syd S. Peng. Evaluation of Roof Bolting Requirements Based on In-Mine Roof Bolter Drilling. Office of Scientific and Technical Information (OSTI), October 2005. http://dx.doi.org/10.2172/860172.

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