Relevant bibliographies by topics / Resin Ducts

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

Academic literature on the topic 'Resin Ducts'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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Journal articles on the topic "Resin Ducts"

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Charon, J., J. Launay, and E. Vindt-Balguerie. "Ontogenèse des canaux sécréteurs d'origine primaire dans le bourgeon de Pin maritime." Canadian Journal of Botany 64, no. 12 (1986): 2955–64. http://dx.doi.org/10.1139/b86-390.

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In the bud of Pinus pinaster Ait., two resin ducts are formed at the base of each very young scale on each side of the procambial strand. They differentiate in the acropetal and basipetal directions as do the vascular tissues. During the basipetal differentiation, the resin ducts from each scale anastomose in a definite way: the left resin duct of each scale is connected with the right duct of the n – 8 scale rank and the right duct, with the left duct of the n – 5 scale rank. The resin canal system of the shoot is then constituted of only 13 resin ducts. The resin ducts of the maritime pine a
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Vázquez-González, Carla, Rafael Zas, Nadir Erbilgin, Scott Ferrenberg, Vicente Rozas, and Luis Sampedro. "Resin ducts as resistance traits in conifers: linking dendrochronology and resin-based defences." Tree Physiology 40, no. 10 (2020): 1313–26. http://dx.doi.org/10.1093/treephys/tpaa064.

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Abstract Conifers have evolved different chemical and anatomical defences against a wide range of antagonists. Resin ducts produce, store and translocate oleoresin, a complex terpenoid mixture that acts as both a physical and a chemical defence. Although resin duct characteristics (e.g., number, density, area) have been positively related to biotic resistance in several conifer species, the literature reporting this association remains inconclusive. Axial resin ducts recorded in annual growth rings are an archive of annual defensive investment in trees. This whole-life record of defence invest
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Charon, J., E. Vindt-Balguerie, and J. Launay. "Ontogenèse des canaux sécréteurs d'origine primaire dans la jeune plante de Pinus pinaster." Canadian Journal of Botany 68, no. 10 (1990): 2119–26. http://dx.doi.org/10.1139/b90-277.

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An ontogenic study of the primary resin ducts was carried out from the embryo to the 2-month-old seedlings stage in Pinus pinaster Ait. and revealed two separate systems, the hypocotyl-radicular ducts and the epicotylar ducts. In the first system, each one of the resin ducts, which are numerically equal to the protoxylem strands of the radicle, is formed by vertical juxtaposition of two canals initiated partly in the hypocotyl and in the radicle. This system is closed at the level of the cotyledonary node. The second system consists of the anastomosis of the resin ducts initiated in the base o
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Kelsey, Rick G., Eric D. Forsman, and James K. Swingle. "Terpenoid Resin Distribution in Conifer Needles with Implications for Red Tree Vole, Arborimus longicaudus, Foraging." Canadian Field-Naturalist 123, no. 1 (2009): 12. http://dx.doi.org/10.22621/cfn.v123i1.670.

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Tree voles are dietary specialists, feeding almost exclusively on conifer needles and bark. They reduce their exposure to conifer chemical defenses by physically removing resin ducts from many needles before ingesting the remaining tissue. The portion of needle removed differs among tree species, depending on the location of the resin ducts. To evaluate the amount of resin avoided by this behavior we removed the resin ducts from Douglas-fir, Western Hemlock, and Sitka Spruce needles and used gas chromatography to compare volatile resin concentrations in needles with and without the resin ducts
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DeAngelis, J. D., T. E. Nebeker, and J. D. Hodges. "Influence of tree age and growth rate on the radial resin duct system in loblolly pine (Pinus taeda)." Canadian Journal of Botany 64, no. 5 (1986): 1046–49. http://dx.doi.org/10.1139/b86-142.

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Formation of radial resin ducts and their associated secretory cells in loblolly pine (Pinus taeda L.) is influenced by the age and growth rate of the annual ring in which the ducts are formed. The spatial pattern of radial ducts on the tangential plane is nonrandom, exhibiting a regular or dispersed pattern. A significantly higher density of radial ducts was found in the inner, first-formed growth rings at all heights within the tree. Radial duct formation was found to be positively correlated with radial growth rate, when growth rate is expressed as increment of cross-sectional area growth.
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Nikolic, Biljana, Zorica Mitic, Srdjan Bojovic, Vlado Matevski, Zoran Krivosej, and Petar Marin. "Variability of needle morpho-anatomy of natural Pinus heldreichii populations from Scardo-Pindic mountains." Genetika 51, no. 3 (2019): 1175–84. http://dx.doi.org/10.2298/gensr1903175n.

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Eight morpho-anatomical properties of two-year-old needles of Pinus heldreichii (Bosnian pine) from the Scardo-Pindic mountain massif in Serbia (Kosovo, Mt. Osljak) and North Macedonia (Mt. Galicica) were investigated. All measured characteristics, except for needle length, were inspected on mid-needle cross-section. Cross-sections were obtained with razorblade, while measurements were performed with Leica-Gallen III light microscope. The mean values of the analyzed characters were as follows: 5.91 cm (needle length), 1.35 mm (needle width), 0.85 mm (needle thickness), 25.05 ?m (cuticle + epid
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Ferrenberg, Scott. "Dwarf Mistletoe Infection Interacts with Tree Growth Rate to Produce Opposing Direct and Indirect Effects on Resin Duct Defenses in Lodgepole Pine." Forests 11, no. 2 (2020): 222. http://dx.doi.org/10.3390/f11020222.

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Research Highlights: I sought to disentangle the influences of tree age, growth rate, and dwarf mistletoe infection on resin duct defenses in lodgepole pine, Pinus contorta Douglas ex Loudon, revealing the presence of direct positive and indirect negative effects of mistletoe on defenses. Background and Objectives: For protection against natural enemies, pines produce and store oleoresin (resin) in ‘resin ducts’ that occur throughout the tree. Dwarf mistletoe, Arceuthobium americanum Nutt. ex Engelm. (hereafter “mistletoe”), is a widespread parasitic plant affecting the pines of western North
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Weng, Chengyu, and Stephen T. Jackson. "Species differentiation of North American spruce (Picea) based on morphological and anatomical characteristics of needles." Canadian Journal of Botany 78, no. 11 (2000): 1367–83. http://dx.doi.org/10.1139/b00-111.

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Differentiation of most North American spruce (Picea) species can be done based on needle morphology and anatomy. Picea breweriana S. Watson, Picea chihuahuana Martìnez, Picea mariana (Mill.) BSP, Picea martinezii Patterson, and Picea rubens Sarg. needles have two continuous resin ducts extending from near the base to near the tip. Picea engelmannii Parry ex Engelm., Picea glauca (Moench) Voss, Picea pungens Engelm., Picea mexicana Martìnez, and Picea sitchensis (Bong.) Carr. needles have variable numbers of short, intermittent resin ducts or sacs. Within each of these groups, most species cou
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Wainhouse, D., J. Staley, J. Johnston, and R. Boswell. "The effect of environmentally induced changes in the bark of young conifers on feeding behaviour and reproductive development of adult Hylobius abietis (Coleoptera: Curculionidae)." Bulletin of Entomological Research 95, no. 2 (2005): 151–59. http://dx.doi.org/10.1079/ber2004344.

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AbstractYoung plants of Sitka spruce, Scots and Corsican pine were subject to high and low light, and high and low nitrogen treatments in a polyhouse experiment. The effect of treatments on resin duct size and nitrogen concentration in stem bark was determined together with feeding by Hylobius abietis Linnaeus on the stems of ‘intact’ plants and on ‘detached’ stems cut from the plant. Resin duct size was largest on Corsican pine and smallest on Sitka spruce and inherent variation in duct size between the three conifer species appears to determine the pattern of weevil feeding between species.
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Tomlin, E. S., and J. H. Borden. "Relationship between leader morphology and resistance or susceptibility of Sitka spruce to the white pine weevil." Canadian Journal of Forest Research 24, no. 4 (1994): 810–16. http://dx.doi.org/10.1139/x94-106.

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Sitka spruce, Piceasitchensis (Bong.) Carr., from 27 provenances and five sites in British Columbia, were examined for traits of leader morphology that might be involved in resistance to the white pine weevil, Pissodesstrobi (Peck). Trees from the Usk Ferry provenance at Head Bay and the Kitwanga provenance at Nass River both had low incidence of weevilling, and had needles pressed more closely against the stems by up to 20° than trees from other provenances. At Fair Harbour, trees from the two most resistant provenances, Haney and Cedarvale, had inner resin ducts that were approximately twice
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Dissertations / Theses on the topic "Resin Ducts"

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Ballesteros, J. A., M. Stoffel, J. M. Bodoque, M. Bollschweiler, O. Hitz, and A. Díez-Herrero. "Changes In Wood Anatomy In Tree Rings Of Pinus Pinaster Ait. Following Wounding By Flash Floods." Tree-Ring Society, 2010. http://hdl.handle.net/10150/622618.

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This paper analyzes the anatomical response of Pinus pinaster Ait. following wounding by flash floods. A total of 14 wood samples were taken from 14 different scarred trees located on the river banks of the Arroyo Cabrera torrent (Spanish Central System). In addition, 20 increment cores were collected from undisturbed and healthy P. pinaster trees to build a local reference chronology. For the injured trees, analysis focused on growth changes in early earlywood (EE) tracheids, namely on differences in (i) lumen size; (ii) cell-wall percentage and cell-wall thickness; (iii) radial length and t
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Ferreira, Angel Thiane Boschiero. "Caracterização da estrutura anatômica do lenho, dos anéis de crescimento e dos canais de resina de árvores de Pinus caribaea var. hondurensis Barr. et Golf." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/11/11150/tde-18052009-151531/.

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As pesquisas com resinagem de árvores de espécies de pinus têm mostrado o efeito de fatores que afetam a produção e a qualidade da resina, relacionado com as espécies, variabilidade genética, taxa de crescimento, idade, manejo florestal, etc. As práticas de extração da goma-resina, a concentração, freqüência da aplicação de estimulantes químicos, época de abertura dos painéis, etc., têm sido, da mesma forma, analisadas. No entanto, há necessidade do desenvolvimento de pesquisas direcionadas ao estudo da formação e da estrutura do lenho e dos canais de resina das árvores de pinus. Pelo exposto,
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Books on the topic "Resin Ducts"

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National Council of the Paper Industry for Air and Stream Improvement (U.S.), ed. Investigation of methodology to assess gaseous and releasable formaldehyde from paper and wood formaldehyde resin-containing dusts during the use of personal samplers for workplace airborne dust. National Council of the Paper Industry for Air and Stream Improvement, 1990.

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Book chapters on the topic "Resin Ducts"

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Pengelly, Andrew. "Resins and cannabinoids." In The constituents of medicinal plants, 3rd ed. CABI, 2021. http://dx.doi.org/10.1079/9781789243079.0007.

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Abstract This chapter provides an overview of resins, which are solid, brittle substances secreted by plants into special ducts, often as a response to damage to the plant by wounding, wind or insect damage. Some major resin and oleo-gum-resin containing plants, such as myrrh, ginger, Capsicum sp. and Podophyllum sp., among others, are presented along with their pharmacological properties. Information on the structures, biosynthesis and medicinal properties of cannabinoids, which are derived from Cannabis sativa, are highlighted.
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Pengelly, Andrew. "Essential oils." In The constituents of medicinal plants, 3rd ed. CABI, 2021. http://dx.doi.org/10.1079/9781789243079.0008.

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Abstract This chapter provides information on the extraction methods, chemistry and pharmacological actions of essential oils, which are odorous exudations or principles stored in special plant cells (glands, glandular hairs, oil ducts or resin ducts) situated in any part of an essential oil plant. These oils are responsible for the distinctive aromas associated with individual plant species.
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Aloni, Roni. "Resin Glands and Traumatic Duct Formation in Conifers." In Vascular Differentiation and Plant Hormones. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-53202-4_17.

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Prieto, Minolfa C., and L. Gabriel Navar. "Collecting Duct Renin: A Critical Linkin Angiotensin II-Dependent Hypertension." In The Local Cardiac Renin-Angiotensin Aldosterone System. Springer US, 2009. http://dx.doi.org/10.1007/978-1-4419-0528-4_13.

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Reeve, John D., and Peter Turchin. "Evidence for Predator-Prey Cycles in a Bark Beetle." In Population Cycles. Oxford University Press, 2002. http://dx.doi.org/10.1093/oso/9780195140989.003.0009.

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The southern pine beetle, Dendroctonus frontalis Zimmermann (Coleoptera: Scolytidae), is an economically important pest of pine forests in the southern United States (Price et al. 1992). This native bark beetle is able to attack and kill living trees, typically loblolly (Pinus taeda L.) or shortleaf (Pinus echinata Mill.) pine, through a process of mass attack coordinated by pheromones emitted by the beetle (Payne 1980). During the attack process, thousands of beetles bore through the outer bark of the tree and begin constructing galleries in the phloem layer. Trees can respond to beetle attack by exuding resin from a network of ducts, but the large number of simultaneous attacks usually overcomes this defense, literally draining the resin from the tree. Oviposition and brood development then occur in the girdled (and ultimately dead) tree. Once a tree is fully colonized the attack process shifts to adjacent trees, often resulting in a cluster of freshly attacked trees, trees containing developing brood, and dead and vacated trees (Coulson 1980). These infestations can range in size from a single tree to tens of thousands, although the latter only occur in areas where no control methods are applied. Approximately six generations can be completed in a year in the southern United States (Ungerer et al. 1999). Like many other forest insect pests, D. frontalis populations are characterized by a considerable degree of fluctuation. The longest time series available are Texas Forest Service records of infestations in southeast Texas since 1958 (figure 5.la). These data suggest that the fluctuations have at least some periodic component, with major outbreaks occurring at intervals of 7-9 years (1968, 1976, 1985, and 1992). A variety of different analyses, including standard time series analysis and response surface methodology (Turchin 1990, Turchin and Taylor 1992), suggest that D.frontalis dynamics are indeed cyclic and appear governed by some kind of delayed negative feedback acting on population growth (see chapter 1). This effect can be seen by plotting the realized per-capita rate of growth (R-values) over a year against population density in the previous year (figure 5.1b).
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Conference papers on the topic "Resin Ducts"

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Mechefske, Chris K., and Wei Shao. "Analytical Modeling of Noise in MRI Scanners." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34349.

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Acoustic noise generated by MRI scanners is sometimes a significant problem for patients by heightening their anxiety and even causing temporary and permanent hearing impairment. This noise is caused by the Lorentz forces acting on the gradient coils of MRI scanner bound within an epoxy resin cylinder. Some acoustic analytical models were developed to describe the sound radiation characteristics of the gradient coil system. The gradient coil was modeled as a finite cylindrical duct with vibrating walls. The sound field in the duct satisfied both the boundary conditions at the wall and at the o
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Nishimura, Masahiro, Hiroyuki Sato, Hideki Kamide, Hiroyuki Ohshima, Kazuyoshi Nagasawa, and Yasutomo Imai. "Investigation on Velocity Distribution Around the Wrapping Wire in an Inner Subchannel of Fuel Pin Bundle." In 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icone20-power2012-54404.

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A sodium cooled fast reactor is designed to attain a high burn-up core in commercialized fast reactor cycle systems. In high burn-up fuel subassemblies, deformation of fuel pin due to the swelling and thermal bowing may decrease local flow velocity via change of flow area in the subassembly and influence the heat removal capability. Therefore, it is important to obtain the flow velocity distribution in a wire wrapped pin bundle. In this study, water experiments were carried out to investigate the detailed velocity distribution in inner subchannel of the pin bundle geometry. These basic data ar
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Sato, Hiroyuki, Jun Kobayashi, Hiroyuki Miyakoshi, and Hideki Kamide. "Study on Velocity Field in a Deformed Fuel Pin Bundle: Influence of Pin Deformation and Wrapping Wire on Velocity Distribution." In 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48774.

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A sodium cooled fast reactor is designed to attain a high burn-up core in a feasibility study on commercialized fast reactor cycle systems. In high burn-up fuel subassemblies, deformation of fuel pin due to the swelling and thermal bowing may decrease flow rate via change of flow area in the sub-assembly and influence the heat removal capability. A 2.5 times enlarged 7-pin bundle water model was applied to investigate the influence of pin bowing and wrapping wire. The test section consisted of a hexagonal acrylic duct tube and fluorinated resin pins which had a refractive index (1.336) nearly
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Aizawa, Kosuke, Tomoyuki Hiyama, Masahiro Nishimura, Akikazu Kurihara, and Katsuji Ishida. "Investigation on Velocity Distribution in the Subchannels of Pin Bundle With Wrapping Wire: Evaluation of Reynolds Number Dependence in 3-Pin Bundle." In 2020 International Conference on Nuclear Engineering collocated with the ASME 2020 Power Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/icone2020-16679.

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Abstract A sodium-cooled fast reactor is designed to attain a high burn-up core in commercialized fast reactor cycle systems. In high burn-up fuel subassemblies, the deformation of fuel pin due to the swelling and thermal bowing may decrease local flow velocity in the subassembly and influence the heat removal capability. Therefore, it is important to obtain the flow velocity distribution in a wire wrapped pin bundle. In this study, the detailed flow velocity distribution in the subchannel has been obtained by PIV (Particle Image Velocimetry) measurement using a wire-wrapped 3-pin bundle water
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Luque, S., and T. Povey. "A Novel Technique for Assessing Turbine Cooling System Performance." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-60022.

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A new experimental technique for the accurate measurement of steady-state metal temperature surface distributions of modern heavily film-cooled turbine vanes has been developed and is described in this paper. The technique is analogous to the thermal paint test, but has been designed for fundamental research. The experimental facility consists of an annular sector cascade of HP turbine vanes from a current production engine. Flow conditioning is achieved by using an annular sector of deswirl vanes downstream of the test section, being both connected by a three-dimensionally contoured duct. As
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