Bibliografías temáticas / Leaf specimens

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Literatura académica sobre el tema "Leaf specimens"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 20 de febrero de 2023

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Artículos de revistas sobre el tema "Leaf specimens"

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Volkova, Polina A., Sof'ya A. Kasatskaya, Anna A. Boiko, and Alexey B. Shipunov. "Stability of leaf form and size during specimen preparation of herbarium specimens." Feddes Repertorium 121, no. 5-6 (December 2010): 219–25. http://dx.doi.org/10.1002/fedr.201000021.

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Beauvais, Marie-Pierre, Stéphanie Pellerin, Jean Dubé, and Claude Lavoie. "Herbarium specimens as tools to assess the impact of large herbivores on plant species." Botany 95, no. 2 (February 2017): 153–62. http://dx.doi.org/10.1139/cjb-2016-0206.

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Herbarium specimens can be used to reconstruct spatiotemporal changes in plant morphology caused by environmental pressures. The reliability of herbarium-derived data requires evaluation, because specimen collection is subject to biases. We used herbarium and field data to investigate the impact of large herbivore browsing on the size of a forb. White trillium (Trillium grandiflorum (Michaux) Salisbury) was studied because the impacts of white-tailed deer (Odocoileus virginianus Zimmermann) browsing on this species are well-known. A total of 692 herbarium specimens collected in Quebec (Canada)
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Ahlstrand, Gilbert G., and Richard J. Zeyen. "Bulk Specimen Preparation For X-Ray Microanalysis of Plant Cells." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 2 (August 12, 1990): 334–35. http://dx.doi.org/10.1017/s0424820100135277.

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Numerous plant pathological investigations have been published where pathologists determined elemental differences between diseased and healthy plant tissue using unfractured bulk specimens and energy dispersive x-ray microanalysis (EDX). In these studies effects of specimen preparation procedures were largely ignored (1). Our objective was to compare bulk specimen preparation procedures using healthy leaf epidermal (surface) cells of barley, Hordeum vulgare, (Fig. 1) to determine advantages and disadvantages of each procedure for reference to future pathological work using EDX. Three preparat
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Corney, David P. A., Jonathan Y. Clark, H. Lilian Tang, and Paul Wilkin. "Automatic extraction of leaf characters from herbarium specimens." TAXON 61, no. 1 (February 2012): 231–44. http://dx.doi.org/10.1002/tax.611016.

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Kim, Hyeree, XiaoXuan Du, Sungwook Kim, Pilun Kim, Ruchire Eranga Wijesinghe, Byoung-Ju Yun, Kyung-Min Kim, Mansik Jeon, and Jeehyun Kim. "Non-Invasive Morphological Characterization of Rice Leaf Bulliform and Aerenchyma Cellular Regions Using Low Coherence Interferometry." Applied Sciences 9, no. 10 (May 22, 2019): 2104. http://dx.doi.org/10.3390/app9102104.

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Non-invasive investigation of rice leaf specimens to characterize the morphological formation and particular structural information that is beneficial for agricultural perspective was demonstrated using a low coherence interferometric method called swept source optical coherence tomography (SS-OCT). The acquired results non-invasively revealed morphological properties of rice leaf, such as bulliform cells; aerenchyma, parenchyma, and collenchyma layer; and vascular bundle. Beside aforementioned morphologic characteristics, several leaf characteristics associated with cytological mechanisms of
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Kirker, Grant T., Amy Bishell, Jed Cappellazzi, Jonathan Palmer, Nathan Bechle, Patricia Lebow, and Stan Lebow. "Role of Leaf Litter in Above-Ground Wood Decay." Microorganisms 8, no. 5 (May 9, 2020): 696. http://dx.doi.org/10.3390/microorganisms8050696.

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The effects of leaf litter on moisture content and fungal decay development in above-ground wood specimens were assessed. Untreated southern pine specimens were exposed with or without leaf litter contact. Two types of leaf litter were evaluated; aged (decomposed) and young (early stages of decomposition). The moisture content of specimens was monitored, and specimens were periodically removed for visual evaluation of decay development. In addition, amplicon-based sequencing analysis of specimens and associated leaf litter was conducted at two time points. Contact with either type of leaf litt
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Petrulaitis, Lukas, and Zigmantas Gudžinskas. "What are We Conserving? A Case Study of Mentha longifolia and Allied Species from Lithuania." Botanica 24, no. 1 (June 1, 2018): 3–14. http://dx.doi.org/10.2478/botlit-2018-0001.

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AbstractAssessment of the conservation status of a species, first, should be based on its clearly defined taxonomic identity. Insufficient knowledge of certain taxonomic groups may lead to misidentifications, misinterpretations and become an obstacle for conservation. Mentha longifolia, listed as a protected plant species of Lithuania since 1981, belongs to a taxonomically complex group of species. The aim of this research was to examine available herbarium specimens of M. longifolia and verify their identification, specify distribution of this species in Lithuania and evaluate its conservatio
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Dacuan, Cecielle N., Virgilio Y. Abellana, and Hana Astrid R. Canseco. "Assessment and Evaluation of Blended Cement Using Bamboo Leaf Ash BLASH Against Corrosion." Civil Engineering Journal 7, no. 6 (June 1, 2021): 1015–35. http://dx.doi.org/10.28991/cej-2021-03091707.

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Concrete provides a high degree of protection against corrosion of embedded steel reinforcement. Owing to the harsh environmental conditions and the presence of aggressive elements from the marine environment, deteriorating corrosion affects the durability of reinforced concrete structures. This study evaluated the effectiveness of bamboo leaf ash BLASH as a supplementary cementing material or admixture with Portland cement to improve the durability of reinforced concrete structures. Specimens of 0, 10, 15, and 20% BLASH mixtures were prepared using 16, 20, and 25 mm steel reinforcements. A to
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Koponen, T. "Taxonomic Results of the BRYOTROP Expedition to Zaire and Rwanda 21. Mniaceae." Bryophyte Diversity and Evolution 8, no. 1 (December 31, 1993): 189. http://dx.doi.org/10.11646/bde.8.1.22.

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The specimen represents a rather typical African form of this taxon. The marginal teeth of the leaf are small and the leaf cells near isodiametric, but on the basis of the clearly differentiated juxtacostal cells, the specimen belongs to var. rhynchophyrum. Two other tropical African species are Plagiomnium cuspidatum (Hedw.) T. Kop. and P. undulatum (Hedw.) T. Kop. which differ by having an acute or cuspidate leaf apex, which in P. rhynchophorum tends to be emarginate and apiculate, and having sharper and larger projecting marginal teeth on their leaves. The distribution of P. rhynchophyrum i
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Kozlov, Mikhail V., Irina V. Sokolova, Vitali Zverev, and Elena L. Zvereva. "Changes in plant collection practices from the 16th to 21st centuries: implications for the use of herbarium specimens in global change research." Annals of Botany 127, no. 7 (February 9, 2021): 865–73. http://dx.doi.org/10.1093/aob/mcab016.

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Abstract Background and Aims Herbaria were recently advertised as reliable sources of information regarding historical changes in plant traits and biotic interactions. To justify the use of herbaria in global change research, we asked whether the characteristics of herbarium specimens have changed during the past centuries and whether these changes were due to shifts in plant collection practices. Methods We measured nine characteristics from 515 herbarium specimens of common European trees and large shrubs collected from 1558 to 2016. We asked botanists to rank these specimens by their scient
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Tesis sobre el tema "Leaf specimens"

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Tipping, Claudia, of Western Sydney Hawkesbury University, of Science Technology and Agriculture Faculty, and School of Horticulture. "Morphological and structural investigations into C3 C4 and C3/C4 members of the genus Panicum grown under elevated CO2 concentrations." THESIS_FSTA_HOR_Tipping_C.xml, 1996. http://handle.uws.edu.au:8081/1959.7/329.

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Three perennial tropical Panicum species were grown under ambient and elevated (900 ppm) carbon dioxide concentrations in especially designed microclimate chambers. The study aimed to investigate the influence of high carbon dioxide concentrations on morphology/anatomy with physiological change among three closely related species possessing distinctly different photosynthetic pathways. The anatomy of the leaf was investigated using light microscopy (LM), transmission electron microscopy (TEM), and graphics image analysis. A suitable schedule for fixation, dehydration and embedding of leaf spec
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Thambi, Joel Luther [Verfasser], Klaus-Dieter [Akademischer Betreuer] Lang, Klaus-Dieter [Gutachter] Lang, Ulrich [Gutachter] Tetzlaff, and Bernhard [Gutachter] Wunderle. "Reliability assessment of lead- free solder joint, based on high cycle fatigue & creep studies on bulk specimen / Joel Luther Thambi ; Gutachter: Klaus-Dieter Lang, Ulrich Tetzlaff, Bernhard Wunderle ; Betreuer: Klaus-Dieter Lang." Berlin : Technische Universität Berlin, 2018. http://d-nb.info/1162540451/34.

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Tipping, Claudia. "Morphological and structural investigations into C3 C4 and C3/C4 members of the genus Panicum grown under elevated CO2 concentrations." Thesis, 1996. http://handle.uws.edu.au:8081/1959.7/329.

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Three perennial tropical Panicum species were grown under ambient and elevated (900 ppm) carbon dioxide concentrations in especially designed microclimate chambers. The study aimed to investigate the influence of high carbon dioxide concentrations on morphology/anatomy with physiological change among three closely related species possessing distinctly different photosynthetic pathways. The anatomy of the leaf was investigated using light microscopy (LM), transmission electron microscopy (TEM), and graphics image analysis. A suitable schedule for fixation, dehydration and embedding of leaf spec
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4

HUANG, WEN-CHIN, and 黃文錦. "Facilitating Surgical Pathology Specimens Management Using Smart Information Technology: Applying Lean Principles." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/kt4794.

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碩士<br>嘉南藥理大學<br>醫務管理系<br>106<br>The collection and inspection of surgical pathology specimens is a key medical task in the operating room (OR). Such specimens provide physicians with a referential basis for diagnosis and treatment. The collection of surgical pathology specimens is an invasive procedure, during which patients are at risk of bleeding, infection, and even death. The integrity of surgical pathology specimen inspection is crucial to patients’ safety, and any missing links may affect their diagnosis and treatment. Furthermore, reexamination of missing specimens puts patients at grea
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Han, Ching Ju, and 韓晴如. "A Research of Improving Correctness on the Specimen Delivery in Laboratory Testing by Using Lean Thinking Methodology." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/73242251561332763345.

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碩士<br>長庚大學<br>資訊管理學研究所<br>97<br>Laboratory medicine is a clinic advisory service that is based on scientific empirical evidence. It includes providing various clinical tests which are used by physicians to determine the most appropriate treatments. However, the current process for laboratory testing is very complex, involving many procedures -- including request for testing, sample collection, sample transportation, sample analysis, and return results to the physicians. If any mistake exists in any of these procedures, the final test result will be affected, which in turn may cause the physici
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Libros sobre el tema "Leaf specimens"

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Speirs, Gill. The green leaf. Racine, Wis: Western Pub. Co., 1995.

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Ehlert, Lois. Leaf Man. Orlando, Fla: Harcourt, Inc., 2005.

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Leaf Man. Orlando, Fla: Harcourt, 2005.

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Gillingham, Sara. On my leaf. San Francisco, Calif: Chronicle Books, 2012.

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Phitzer, Juniper Von. Leaf: A play on a word. [San Francisco]: Juniper Von Phitzer Press, 1994.

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Wakeman, Geoffrey. A leaf history of British printing: From 1610 to 1774. Oxford [Oxfordshire]: Plough Press, 1986.

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Delamar, Gloria T. Wishing: Shooting stars, four-leaf clovers, and other wonders to wish upon. Philadelphia: Running Press Book Publishers, 1996.

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David, Butcher. Pages from presses: Kelmscott, Ashendene, Doves, Vale, Eragny & Essex House. Risbury, Herefordshire: Whittington Press, 2006.

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Locatelli, Boneto. A leaf from Biblia Latina: With commentary by Nicolai de Lyra ; printed in Venice in 1489 by Bonetus Locatellus. Sacramento, Calif: Sacramento Book Collectors Club and the California State Library Foundation, 1995.

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Press, Kazui. Type faces, the Kazui Press: Specimen of twentysix soldiers of lead. Tokyo: Kazui Press, 1993.

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Capítulos de libros sobre el tema "Leaf specimens"

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Casey, Francis. "Specimen Critical Analysis." In King Lear by William Shakespeare, 82–85. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-08342-8_5.

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Peng, Chengwei, and Wenlong Lv. "Experimental Study on Mechanical Properties of the Damaged Hoop Head Mortise-Tenon Joint." In Advances in Frontier Research on Engineering Structures, 397–407. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-8657-4_35.

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AbstractDamage is a common condition in ancient timber structures, whose influence on the mechanical properties of structures cannot be ignored. To study the mechanical properties of damaged hoop head mortise-tenon joint, four specimens with shrinkage gauge, including one intact joint specimen and three artificial simulated damaged joint specimens, are designed, and fabricated in this paper by regarding the global damage degree and column axial force as the variation of parameters. The failure mode, hysteresis curve, skeleton curve, ductility, and energy dissipation capacity of the specimens are studied by low-cyclic reversed loading tests. The results show that the failure pattern is randomly manifested as parallel-to-grain tensile cracking failure or vertical splitting failure of the beam tenon. When the global damage degree increases, the two types of damage are more likely to appear simultaneously. The global damage degree has a significant influence on the ultimate bending moment and energy dissipation capacity of hoop head mortise-tenon joints, and 2.4% of the global damage degree can lead to a significant decrease in both. The column axial force can affect the ultimate bending moment, ductility, and energy dissipation capacity of hoop head mortise-tenon joints. When the column axial force increases, the ultimate bending moment and energy dissipation capacity will increase, while the ductility will decrease.
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Tavares, T. M. "The Role of Lead and Cadmium Reference Samples in an Epidemiological Case Study at Santo Amaro, Bahia, Brazil." In Specimen Banking, 89–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-77197-2_10.

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Visinoni, Franco. "Towards the Lean lab: The Industry Challenge." In Pre-Analytics of Pathological Specimens in Oncology, 119–33. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13957-9_12.

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Telang, Adwait U., and Thomas R. Bieler. "Dislocation Activity and Slip Analysis Contributing to Grain Boundary Sliding and Damage during Thermomechanical Fatigue in Dual Shear Lead-Free Solder Joint Specimens." In Solid State Phenomena, 219–26. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/3-908451-09-4.219.

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Perlongo, Alessandro, Nicolas Goujard, Mahsa Mozayan, and Farid Benboudjema. "Development of a Thermo-Hydro-Mechanical Model of the Containment Vessel Vercors to Study Its Aging and Leak Tightness, Based on Specimen Tests and In Situ Measurements." In RILEM Bookseries, 289–300. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-07746-3_29.

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Kleinfeller, Nikolai, Christopher M. Gehb, Maximilian Schaeffner, Christian Adams, and Tobias Melz. "Assessment of Model Uncertainty in the Prediction of the Vibroacoustic Behavior of a Rectangular Plate by Means of Bayesian Inference." In Lecture Notes in Mechanical Engineering, 264–77. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77256-7_21.

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AbstractDesigning the vibroacoustic properties of thin-walled structures is of particularly high practical relevance in the design of vehicle structures. The vibroacoustic properties of thin-walled structures, e.g., vehicle bodies, are usually designed using finite element models. Additional development effort, e.g., experimental tests, arises if the quality of the model predictions are limited due to inherent model uncertainty. Model uncertainty of finite element models usually occurs in the modeling process due to simplifications of the geometry or boundary conditions. The latter highly affect the vibroacoustic properties of a thin-walled structure. The stiffness of the boundary condition is often assumed to be infinite or zero in the finite element model, which can lead to a discrepancy between the measured and the calculated vibroacoustic behavior. This paper compares two different boundary condition assumptions for the finite element (FE) model of a simply supported rectangular plate in their capability to predict the vibroacoustic behavior. The two different boundary conditions are of increasing complexity in assuming the stiffness. In a first step, a probabilistic model parameter calibration via Bayesian inference for the boundary conditions related parameters for the two FE models is performed. For this purpose, a test stand for simply supported rectangular plates is set up and the experimental data is obtained by measuring the vibrations of the test specimen by means of scanning laser Doppler vibrometry. In a second step, the model uncertainty of the two finite element models is identified. For this purpose, the prediction error of the vibroacoustic behavior is calculated. The prediction error describes the discrepancy between the experimental and the numerical data. Based on the distribution of the prediction error, which is determined from the results of the probabilistic model calibration, the model uncertainty is assessed and the model, which most adequately predicts the vibroacoustic behavior, is identified.
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Lee, Liz. "A New Leaf." In Biologically-Inspired Computing for the Arts, 278–88. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-0942-6.ch016.

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The author and artist, Liz Lee discusses her latest digital image series, “A New Leaf Series,” within the context of early photographic imaging and its connection to science and biology by investigating and connecting to the work of Thomas Wedgewood, William Henry Fox-Talbot, and the early pioneers of photographic technologies. Hippolyte Bayard’s “Arrangement of Specimens” and Anna Atkins’ “Photographs of British Algae: Cyanotype Impressions” serve as early examples of the scientific fundamentals of photography; the technological advances of the medium still draw on the same subject matter to reveal the basic structure of conceptual and aesthetic investigation. The author discusses how contemporary electronic imaging has returned to its photographic origins through nature-related subject matter.
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Ewers, Ulrich, Martina Turfeld, and Erich Jermann. "Chapter 18 Lead." In Trace Element Analysis in Biological Specimens, 371–84. Elsevier, 1994. http://dx.doi.org/10.1016/s0167-9244(08)70160-4.

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Krishnan, Kannan M. "Probes: Sources and Their Interactions with Matter." In Principles of Materials Characterization and Metrology, 277–344. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198830252.003.0005.

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Probes are generated using laboratory sources, or in large user facilities. Photon sources include incandescence and plasma discharge lamps. Electron beams are generated using thermionic or field-emission sources. RF plasma sources generate ions that are accelerated and used for scattering experiments. Specimens should be probed first with light, as it causes the least damage. Electron interaction with matter causes beam broadening, atomic displacements, sputtering, or radiolysis leading to mass loss and local contamination. Neutrons are heavier than electrons, penetrate more deeply in materials, and require more sample for analysis. Protons (positive charge, heavier than electrons) go a longer way in the specimen without significant broadening. Ions in solids undergo kinematic collisions with conservation of energy and momentum; they also lose energy continuously as they propagate. In the back-scattering geometry, they form important methods of Rutherford backscattering spectroscopy (RBS) and low-energy ion scattering spectroscopy (LEISS). Medium energy ions generate secondary ions by sputtering that can be analyzed by mass spectrometers to determine specimen composition (SIMS). Alternatively, its composition is analyzed (ICP-MS), by creating an aqueous dispersion and converting it to a plasma. Finally, interaction of high-energy ions with core electrons can lead to inner shell ionization and characteristic X-ray emission (PIXE).
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Actas de conferencias sobre el tema "Leaf specimens"

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Singh, Gurdit, Nitin Aggarwal, Kanika Gupta, and Devendra Kumar Misra. "Plant Identification Using Leaf Specimen." In 2020 11th International Conference on Computing, Communication and Networking Technologies (ICCCNT). IEEE, 2020. http://dx.doi.org/10.1109/icccnt49239.2020.9225683.

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Nakamura, Izumi, and Naoto Kasahara. "Improved Model Tests to Investigate the Failure Modes of Pipes Under Beyond Design Basis Earthquakes." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84424.

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In order to investigate the failure modes of piping systems under the beyond design basis seismic loads, the authors proposed an experimental approach to use pipes made of the simulation material instead of steel pipes in the previous study. Though the ratchet-collapse (ratchet and subsequent collapse) was successfully obtained as the failure mode through the shaking table test using the pure lead (Pb) pipes as the simulation material pipe specimens, there was concern that characteristics of pure lead was somewhat extreme considering the analogy with the stress-strain relationship of steel. In
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Williams, Bruce W., William R. Tyson, C. Hari M. Simha, and Bogdan Wasiluk. "Specimen Curvature and Size Effects on Crack Growth Resistance From Compact Tension Specimens of CANDU Pressure Tubes." In ASME 2019 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/pvp2019-93318.

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Abstract CSA Standard N285.8 requires leak-before-break and fracture protection for Zr-2.5Nb pressure tubes in operating CANDU reactors. In-service deuterium uptake causes the formation of hydrides, which can result in additional variability and reduction of fracture toughness. Pressure tube fracture toughness is assessed mainly through rising pressure tube section burst tests. Given the length of the ex-service pressure tubes required for burst testing and the requirement to increase the hydrogen content of irradiated ex-service pressure tubes, only a limited number of burst tests can be perf
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ŠVADLENA, Jan, Kristýna Charlotte STRACHOTOVÁ, Tomáš PROŠEK, and Milan KOUŘIL. "Evaluation of corrosivity of indoor museum atmospheres using lead specimens." In METAL 2020. TANGER Ltd., 2020. http://dx.doi.org/10.37904/metal.2020.3631.

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Seo, Young Ho, Tae Goo Kang, Young-Ho Cho, Seong-A. Kim, Geun Ho Kim, and Jong Uk Bu. "Locally Heated Low Temperature Wafer Level MEMS Packaging With Closed-Loop AuSn Solder-Lines." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-39267.

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In this paper, locally heated closed-loop AuSn solder-line bonding method was proposed and evaluated for a low-temperature, high strength, and hermetic MEMS packaging. We fabricated two different test specimens including substrate-heated specimen and locally heated specimen in order to verify the performance of locally heated method. In air tightness test, the substrate-heated specimen and locally heated specimen show the maximum leak rate of 13.5±9.8×10−10mbar-l/s and 18.8±9.9×10−10mbar-l/s with the same internal volume of 6.89±0.2×10−6l, respectively. In the critical pressure test, any fract
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Kathikeyan, J., C. C. Berndt, A. Ristorucci, and H. Herman. "Ceramic Impregnation of Plasma Sprayed Thermal Barrier Coatings." In ITSC 1996, edited by C. C. Berndt. ASM International, 1996. http://dx.doi.org/10.31399/asm.cp.itsc1996p0477.

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Abstract Reducing the pore size and pore volume can lead to improved mechanical properties and enhanced corrosion resistance of plasma sprayed thermal barrier coatings. In this work, plasma sprayed 8 wt.% yttria stabilized zirconia coatings were removed from the substrate and machined to obtain 25x5x1 mm test specimens. These specimens were vacuum impregnated with alumina sol, calcined at 873 K for an hour and then heat treated at 1273 K for an hour to produce ceramic impregnated specimens. As-sprayed and impregnated specimens were investigated using optical microscopy, XRD, SEM, mercury intru
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Ma, Hongtao, Jeffrey C. Suhling, Pradeep Lall, and Michael J. Bozack. "Evolution of Lead Free Solder Material Behavior During Isothermal Aging." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15491.

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Solder materials demonstrate evolving microstructure and mechanical behavior that changes significantly with environmental exposures such as isothermal aging and thermal cycling. These aging effects are greatly exacerbated at higher temperatures typical of thermal cycling qualification tests for harsh environment electronic packaging. In the current study, mechanical measurements of thermal aging effects and material behavior evolution of lead free solders have been performed. Extreme care has been taken so that the fabricated solder uniaxial test specimens accurately reflect the solder materi
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Cryderman, Robert, Finn Bamrud, Tareq Eddir, and Robert Goldstein. "Influence of Specimen Design on Maximum Heating Rate and Temperature Variation During Induction Heating in an 805L Dilatometer." In HT2021. ASM International, 2021. http://dx.doi.org/10.31399/asm.cp.ht2021p0138.

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Abstract Commercially, carbon steels are induction heated at heating rates on the order of 100 to 1,000 °C·s-1 for surface hardening. The high precision DIL 805L dilatometer employs induction heating and is often used to study transformation characteristics and prepare test specimens for metallurgical analysis. However, heating the commonly used 4 mm diameter by 10 mm long specimens at rates above 50 °C·s-1 results in non-linear heating rates during transformation to austenite and large transient temperature variations along the specimen length. These limitations in heating rate and variances
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Park, Soo, Sang-soo Yoo, Jun-ki Min, Jae-Mean Koo, and Chang-Sung Seok. "Evaluation of Fracture Toughness Characteristic for Nuclear Piping Using Various Types of Specimens." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25540.

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The leak-before-break (LBB) concept is based on the fracture resistance curve obtained by J-R tests on various types of specimens. But it has been also known that the fracture toughness data by various types of specimens are different each other. For example, the estimates for fracture toughness of standard specimens are conservative when compared to the fracture toughness of real pipes owing to the difference of the constraint effect between real pipes and standard specimens. Therefore for estimating the integrity of real pipes on the basis of elastic-plastic fracture mechanics, we have to fi
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Sato, Nobuhisa, Takashi Nakayama, Takashi Kaneko, Seiji Nagata, Tetsuo Imaoka, Keisuke Kurihara, Hideo Hirai, Ko Mizutani, and Yoshito Umeki. "Development of an Evaluation Method for Seismic Isolation Systems of Nuclear Power Facilities: Part 8 — Fundamental Properties of Full-Scale Lead Rubber Bearings Based on Breaking Test." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-29006.

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This paper provides a part of the series “Development of an Evaluation Method for Seismic Isolation Systems of Nuclear Power Facilities.” This part shows the fundamental properties of full-scale lead rubber bearings with 1600 mm diameter based on break tests. The following results are mainly obtained. One: The deformations and the acting loads of the full-scale specimens were accurately obtained up to break by the measurement system for the break tests. Two: The fundamental properties for the full-scale lead rubber bearings with a large-diameter lead plug were obtained by the basic property te
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Informes sobre el tema "Leaf specimens"

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Whisler, Daniel, Rafael Gomez Consarnau, and Ryan Coy. Novel Eco-Friendly, Recycled Composites for Improved CA Road Surfaces. Mineta Transportation Institute, July 2021. http://dx.doi.org/10.31979/mti.2021.2046.

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The continued use of structural plastics in consumer products, industry, and transportation represents a potential source for durable, long lasting, and recyclable roadways. Costs to dispose of reinforced plastics can be similar to procuring new asphalt with mechanical performance exceeding that of the traditional road surface. This project examines improved material development times by leveraging advanced computational material models based on validated experimental data. By testing traditional asphalt and select carbon and glass reinforced composites, both new and recycled, it is possible t
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Wu, Yingjie, Selim Gunay, and Khalid Mosalam. Hybrid Simulations for the Seismic Evaluation of Resilient Highway Bridge Systems. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, November 2020. http://dx.doi.org/10.55461/ytgv8834.

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Bridges often serve as key links in local and national transportation networks. Bridge closures can result in severe costs, not only in the form of repair or replacement, but also in the form of economic losses related to medium- and long-term interruption of businesses and disruption to surrounding communities. In addition, continuous functionality of bridges is very important after any seismic event for emergency response and recovery purposes. Considering the importance of these structures, the associated structural design philosophy is shifting from collapse prevention to maintaining funct
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OVERHANG EFFECT ON WEB CRIPPLING CAPACITY OF COLDFORMED AUSTENITIC STAINLESS STEEL SHS MEMBERS: AN EXPERIMENTAL STUDY. The Hong Kong Institute of Steel Construction, August 2022. http://dx.doi.org/10.18057/icass2020.p.343.

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This paper studies the overhang effects on ultimate bearing capacities of cold-formed austenitic stainless steel square hollow section (SHS) members undergoing web crippling between EndTwo-Flange (ETF) and Interior-Two-Flange (ITF) loading conditions. A total of 16 web crippling tests were conducted with specimens covering various overhang lengths. Tensile coupon tests were performed to obtain the material properties of the test specimens. The web crippling capacities obtained from the tests were compared with the nominal capacities predicted by the SEI/ASCE 8-22 Specification for the design o
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