Relevant bibliographies by topics / Leaf seal

Contents

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

Academic literature on the topic 'Leaf seal'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Leaf seal.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Leaf seal"

1

Jahn, Ingo HJ. "Design approach for maximising contacting filament seal performance retention." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 5 (June 27, 2014): 926–42. http://dx.doi.org/10.1177/0954406214541433.

Full text
Abstract:
Good sealing is a key requirement for modern efficient turbomachinery such as steam and gas turbines. A class of seals that promise better performance, compared to conventional labyrinth seals, are contacting filament seals such as brush, leaf, or finger seal. When new, these filament seals offer better performance; however, if poorly designed they wear excessively, resulting in leakages higher than a comparable labyrinth seal. This paper outlines a design methodology for selecting ideal contacting filament seal properties for a given operating cycle or set of operating cycles. Following this approach ensures the seal performs well, the seal retains its performance, and performance is retained if the operating cycle is altered. In the approach, the seals are described by four generic properties (stiffness, blow-down, cross-coupling, and build clearance), which are then used for a performance evaluation based on a number of test cycles. Once the ideal seal properties for a given operating cycle have been identified, a seal to match these can be designed. The approach is evaluated with a generic gas turbine cycle and recommendations for ideal contacting filament seal properties for this cycle are made.
APA, Harvard, Vancouver, ISO, and other styles
2

ZHANG, Hongtao. "Comparative Analysis of Seal Structure and Aerodynamic Characteristics of Labyrinth and Leaf Seals." Journal of Mechanical Engineering 48, no. 22 (2012): 148. http://dx.doi.org/10.3901/jme.2012.22.148.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Fei, Yuan. "Analysis of the structure of door bottom drop sealing device." E3S Web of Conferences 236 (2021): 02027. http://dx.doi.org/10.1051/e3sconf/202123602027.

Full text
Abstract:
-Drop Seals Is A Kind Of Hardware That Can Solve The Tightness Of The Door Bottom. This article will briefly introduce the common structural features of this hardware and analyze its impact on the sound insulation of the door leaf according to the experiment. Based on the comparative analysis of 5 sets of data, the experiment proved the effectiveness of the drop seals for the door bottom seal.
APA, Harvard, Vancouver, ISO, and other styles
4

Langston, Lee S. "PALS - An Auspicious New Gas Turbine Seal." Mechanical Engineering 138, no. 03 (March 1, 2016): 54–55. http://dx.doi.org/10.1115/1.2016-mar-5.

Full text
Abstract:
This article highlights various aspects of a new gas turbine shaft seal called the pressure activated leaf seal (PALS). The paper in detail discusses the architecture and working of a gas turbine seal. PALS is designed to use changing pressure drop forces across the seal to eliminate rub. The seal elements stay clear of the rotor seal surface during start-up and shutdown transients, and subsequently close to a small, non-contacting, steady-state running clearance. During start-up or shutdown, when the axial pressure difference across PALS is small, the leaves are in a relaxed open position, providing a general clearance gap for possible rotor seal surface eccentricities. At operating speeds, the resulting axial pressure difference causes the leaf element to elastically deflect and close, reaching the design clearance when they contact the support member. The test results show that the PALS concept provides for a potentially viable, robust, low leakage seal for gas turbine applications.
APA, Harvard, Vancouver, ISO, and other styles
5

ZHANG, Hongtao. "Simulation Investigation on Application of Leaf Seal in Turbine Stage." Journal of Mechanical Engineering 50, no. 12 (2014): 177. http://dx.doi.org/10.3901/jme.2014.12.177.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Milovanovic, Bebina, and Angelina Raickovic-Savic. "Seal boxes from the Viminacium site." Starinar, no. 63 (2013): 219–36. http://dx.doi.org/10.2298/sta1363219m.

Full text
Abstract:
Bronze seal boxes that had the function of holding the wax seal on the Viminacium site - Upper Moesia (Stari Kostolac, Serbia), mainly from the area of the necropolis (ten were found in the graves and ten at the cemetery between the graves). Six are from buildings that had a storage function, five are from public facilities - an amphitheatre, and only one find is from the military fort of the legion VII Claudia, which was stationed in Viminacium in the second half of the 1st century. Thirty-two seal boxes have been processed: nine whole, six with fragmented upper and lower parts, seven bases and ten covers. Seal boxes consist of two parts: the cover and the base. The cover is decorated with figural images, concentric rings and especially with applied ornaments. Some of the motifs are filled with enamel. The base always has three to five circular perforations at the bottom, the side walls are a height of 4 to 5 mm with two opposed notches or slots which are thought to have facilitated the tying of the seal box to a package or a document. The lock mechanism is operated using the hinges principle. Some specimens have a circular extension on the cover with a thorn on the bottom. This fits the hollow in the base, through which passes a thorn for the additional fixing of the cover. Based on shape and decoration, seal boxes were classified into five types: I - elliptical or oval shaped with a figural representation on the cover derived in relief; II/1 - leaf or heart-shaped with a special, riveted ornament; II/2 - leaf or heart-shaped with enamel on the cover; III/1 - circular showing a form in relief; III/2 - circular with cast concentric rings, with no enamel; III/3 - circular with concentric rings with enamel on the cover; IV - diamond shaped with enamel on the cover and V - square with enamel on the cover. The seal boxes dominate chronologically from the first half of the 2nd and throughout the 3rd century.
APA, Harvard, Vancouver, ISO, and other styles
7

Dlhý, Dušan, and Katarína Minarovičová. "Door Bottom Joint Design and its Influence on Sound Transmission of the Door." Advanced Materials Research 899 (February 2014): 487–90. http://dx.doi.org/10.4028/www.scientific.net/amr.899.487.

Full text
Abstract:
The higher the acoustical quality of the door leaf the greater the influence of the bottom gap on the resultant sound insulation of the door. If the design of the door bottom joint and the seal is not correct, any construction of the door leaf in order to increase sound insulation can be ineffective. The greatest influence on sound transmission of the door has the gap with the greatest width a door bottom joint. Modern ways of the sealing of the doorsill gap are able to provide required sound insulation of the door.
APA, Harvard, Vancouver, ISO, and other styles
8

Floden, Aaron Jennings. "A new Solomon’s Seal (Polygonatum: Asparagaceae) from northern Thailand." Phytotaxa 236, no. 3 (December 1, 2015): 279. http://dx.doi.org/10.11646/phytotaxa.236.3.9.

Full text
Abstract:
Polygonatum Miller (1754, without pagination) (Asparagaceae) is a relatively large genus containing approximately 60 taxa (Chen & Tamura 2000). The majority of species are eastern Asian (Jeffrey 1980, Chen & Tamura 2000). Phyllotaxy, cytology, and filament morphology have been recognized as important in delimiting species (Suomalainen 1947, Tamura 1990, 1991, 1993). Specimens of an anomalous Polygonatum collected by J.F. Maxwell from northern Thailand, Doi Inthanon have a general affinity to P. punctatum Royle ex Kunth (1850: 142) and have been reported as that species (Tamura 1993, Maxwell 1998), but differ in their emaculate white and longitudinally ridged perigone. Cultivated material from the same locality (BSWJ6599, Figs. 1–2) provides clear observation of the differences that are not as apparent on pressed specimens. It differs in several morphological features from P. punctatum: stem characters; phyllotaxy; leaf shape; inflorescence type and position; perigone color; and filament size, orientation, and morphology. The combined morphological differences and non-contiguous distributions of P. costatum in comparison to P. punctatum support its recognition as a new species, thus far documented only from the highest elevation in northern Thailand.
APA, Harvard, Vancouver, ISO, and other styles
9

Santana, José Raniere Ferreira de, Renato Paiva, Ana Valéria de Souza, and Lenaldo Muniz de Oliveira. "Effect of different culture tube caps and concentrations of activated charcoal and sucrose on in vitro growth and budding induction of Annona glabra L." Ciência e Agrotecnologia 35, no. 5 (October 2011): 916–23. http://dx.doi.org/10.1590/s1413-70542011000500008.

Full text
Abstract:
The present work evaluated the effects of different types of culture flask seals and varying concentrations of sucrose and activated charcoal on the in vitro induction and growth of buds of Annona glabra L.; an edible fruit-producing species popularly known as "araticum". Nodal segments obtained from A. glabra plants maintained in green houses were surface sterilized and inoculated into a WPM culture medium solidified with 7 g L-1 of agar and supplemented with sucrose (0.00; 29.21; 58.63 and 116.84 mM), activated charcoal (0.0 and 2.0 g L-1), and 250 mg L-1 benomyl. In addition to the varying concentrations of sucrose and activated charcoal, we evaluated the efficiency of two types of test tube seals: PVC film, and cotton plugs. All possible combinations of caps and nutrient media were tested with 4 repetitions with 5 tubes each, evaluating the number of buds, the percentage of explant responses, the number of expanded leaves per bud, the length of the largest leaves, leaf abscission, and the length and dry weight of the buds. The type of seal influenced organogenesis in nodal segments of A. glabra, and no bud induction was observed in the absence of sucrose. The largest number of expanded leaves were obtained when 58.42 mM of sucrose was used in tubes sealed with cotton plugs, and leaf abscission was halved in the presence of activated charcoal. The greatest bud length and dry weight were obtained in tubes sealed with cotton plugs and in the presence of activated charcoal.
APA, Harvard, Vancouver, ISO, and other styles
10

Hüberli, D., K. L. Ivors, A. Smith, J. G. Tse, and M. Garbelotto. "First Report of Foliar Infection of Maianthemum racemosum by Phytophthora ramorum." Plant Disease 89, no. 2 (February 2005): 204. http://dx.doi.org/10.1094/pd-89-0204c.

Full text
Abstract:
In May 2003, Phytophthora ramorum S. Werres & A.W.A.M. de Cock was isolated from the leaf tips of a single plant of false Solomon's seal (Maianthemum racemosum (L.) Link, formely known as Smilacina racemosa (L.) Desf.), a native, herbaceous perennial of the Liliaceae family, at the Jack London State Park in Sonoma County, California. Affected leaves had cream-to-brown lesions on the tips that were delimited by a yellow chlorotic zone. Lesions on the stems were not observed. The isolate (American Type Culture Collection [ATCC], Manassas, VA, MYA-3280; Centraal Bureau voor Schimmelcultures, Baarn, the Netherlands, CBS 114391) was typical of P. ramorum with large chlamydospores and caduceus, semipapillate sporangia, and the sequence (GenBank Accession No. AY526570) of the internal transcribed spacer region of the rDNA matched those published previously (4). The site, from which wood rose (Rosa gymnocarpa) was recently identified as a host, is a mixed forest containing confirmed P. ramorum-infected coast redwood (Sequoia sempervirens), California bay laurel (Umbellularia californica), and tanoak (Lithocarpus densiflora) trees (2,3). Two leaves per asymptomatic, pesticide free, potted plant of false Solomon's seal were inoculated with zoospores of the P. ramorum isolate obtained from infected false Solomon's seal (1). Five plants were inoculated in trial 1, and the following day, three plants were inoculated in trial 2. A control leaf of each plant was dipped in sterile deionized water. Plants were enclosed in plastic bags, misted regularly with sterile distilled water, and maintained at 16 to 21°C in the greenhouse. In both trials, plants did not have lesions on the leaves after 16 days and were reinoculated on separate days for each trial with higher concentrations of zoospores (1 × 105 [trial 1] and 2 × 105 [trial 2] zoospores/ml). Cream-colored lesions, similar to those observed in the field, were evident 1 week after the second inoculation and stopped progressing in both trials by 17 days. Lesions starting from the leaf tips averaged 13 mm (range 8 to 24 mm) long, and P. ramorum was reisolated on Phytophthora-selective agar medium modified with 25 mg of pentachloronitrobenzene from 44% (trial 1) and 83% (trial 2) of all lesions (4). Control leaves had no lesions, and P. ramorum was not reisolated. Sporangia were not observed on any leaves when examined with the dissecting microscope. The fact that lesions developed only after a second inoculation with higher concentrations of zoospores, and these lesions stopped progressing after 17 days, suggests that false Solomon's seal is much less susceptible than other hosts such as western starflower (Trientalis latifolia) (1) and wood rose (2). To our knowledge, this is the first report of a plant from the Liliaceae as a natural host for P. ramorum, although Smilax aspersa was identified as being susceptible in artificial inoculations of detached leaves (E. Moralejo and L. Hernández, personal communication). False Solomon's seal is popular in the horticultural industry. References: (1) D. Hüberli et al. Plant Dis. 87:599, 2003. (2) D. Hüberli et al. Plant Dis. 88:430, 2004. (3) P. E. Maloney et al. Plant Dis. 86:1274, 2002. (4) D. M. Rizzo et al. Plant Dis. 86:205, 2002.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Leaf seal"

1

Pe, Juan-Diego. "On the thermal behaviour of gas turbine filament seals." Thesis, University of Oxford, 2017. https://ora.ox.ac.uk/objects/uuid:1de17ef5-2f1c-4ac2-aae8-90a2efd53e8f.

Full text
Abstract:
Advanced rotating shaft seals have the potential to significantly increase the efficiency and performance of steam and gas turbines. Two such seals, brush and leaf seals, rely on the use of thousands of flexible filaments to close clearances between rotating components and their static casings. The current life of the components is poor compared to the rest of the gas turbine, limiting the seals' deployment, particularly in the jet engine at high temperature and pressure. Poor understanding of the seal installation response to frictional heat generated at the point of filament-rotor contact during operation has limited the ability to predict engine closures and hence seal behaviour and life. The resulting temperature rises may compromise the mechanical integrity of the engine rotor in extremis leading to a shaft failure. This thesis considers the heat transfer mechanisms that govern frictional heating, of both the fluid and solid components in the vicinity of such seals, characterising the process both experimentally and using numerical models. Through the identification of key features of the heat transfer a simple numerical methodology is shown to predict the thermal behaviour of the seal installation sufficiently accurately for engine design purposes. A low order heat transfer model, using a simple electrical analogy for heat transfer is used to investigate frictional heat generation. When contact occurs between the rotor surface and the seal filaments, mechanical energy is dissipated as heat at the interface. This is conducted into the rotor and the seal filaments in proportions that depend on the heat transfer characteristics of both contacting bodies (thermal resistances). To calculate the heat partition ratio and the resulting contact temperature, the thermal resistances of both rotor and seal need to be known. To that end, a new test facility, the Seal Static Thermal Test Facility (SSTTF), is developed. This is first used to study the convective heat transfer occurring in the vicinity of the seal; heat transfer coefficients based on appropriate, scalable, gas reference temperatures are reported. Importantly the results show a larger area on the rotor surface affected by the presence of the seal than was assumed by previous workers. The test rig is further modified to generate heating in a static test rig equivalent to the frictional heating at the filament tips. The test rig allows the contact temperature between rotor and seal, a critical previously unknown parameter to be measured in a well-conditioned environment. The presence of many thousands of vanishingly small flow passages in filament seals makes their explicit modelling unfeasible for engine design purposes. Thus the results from the experimental campaign are used to develop a simple computational fluid dynamic model of the seal, including empirically derived frictional heating, and seal porosity models, to achieve similar leakage and surface heat transfer to the rotor as was seen in the static experiments. The low order CFD methodology presented in the thesis is finally employed to model the transient operation of a brush seal under engine representative rotor surface speeds and differential pressures. Experimental data were generated in the Oxford Engine Seal Test Facility for a typical brush seal rubbing against a high growth rotor. These experiments were modelled using CFD and finite element analysis using parameters derived from static tests for the porous modelling of the seal leakage. Comparison of results shows that, without further tuning, the thermal behaviour is captured well with a moderate conservative overestimation of rotor heating with increased differential pressure across the seal allowing the strategy to be used as an engine design tool.
APA, Harvard, Vancouver, ISO, and other styles
2

Jahn, Ingo H. J. "Leaf seals for gas and steam turbines." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.670066.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Parihar, Shailendra S. "High Temperature Seals for Solid Oxide Fuel Cells." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1172490697.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Gibney, Matthew Joseph IV. "Predicting Package Defects: Quantification of Critical Leak Size." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/34857.

Full text
Abstract:
Threshold leak sizes and leak rates were calculated for a number of liquid food products exhibiting a wide range of surface tension and viscosity values. From this data, one can see that mathematically, under typical pressure differentials generated in food packages (less than or equal to ±34.5 kPa), a leak will never start through a 2 μm defect. The calculated leak rates were compared to calculated evaporation rates. The evaporation rate exceeds the leak rate at lower sized microholes (2, and 5 μm diameter) under typical pressure differentials found in food packages. If the liquid, typically aqueous in food products, is evaporating off faster than the leak itself, then there will be solids left behind that could effectively plug the leak.

The critical leak size is the size micro-defect that allows microbial penetration into the package. The critical leak size of air-filled defects was found to be 7 μm at all pressures tested. This size is considerably important to food packagers because this is when sterility of the package is lost. Previous leak studies have shown that the critical leak size for liquid-filled defects coincide with the threshold leak size and pressure. If this is in fact true, then air-filled defects should exhibit a larger critical leak size than the liquid-filled defects. In this study, air-filled defects were examined. A bioaerosol exposure chamber was used to test micro-defects, nickel microtubes of known diameters 2, 5, 7, 10, 20, and 50 μm hydraulic diameters, against pressure differentials of 0, -6.9, -13.8, and -34.5 kPa.
Master of Science

APA, Harvard, Vancouver, ISO, and other styles
5

Shimmield, Tracy Marjory. "A study of radionuclides, lead and lead isotope ratios in Scottish sea loch sediments." Thesis, University of Edinburgh, 1993. http://hdl.handle.net/1842/9988.

Full text
Abstract:
This research involved the study of sediment cores from Loch Etive, Loch Long, Loch Goil and Loch Fyne with the aims of investigating the geochemistry of natural, and manmade radionuclides and heavy metals within the sea loch environment. The main aims of the research were to determine accumulation rates and the extent of mixing within these sediments and to assess the fluxes, sources and temporal variations in input of pollutant heavy metals to these environments. In recent years it has been suggested that Pb is mobile in sea loch sediments which questions the validity of applying ²¹⁰Pb dating in this environment. This has important implications with respect to interpreting sediment cores to assess temporal trends of pollutant inputs and investigating the rates of physical and biogeochemical processes that are taking place in the coastal environment. Hence, one of the aims of this research was to determine whether Pb was mobile in these sediments. The ²⁰⁶Pb/²⁰⁷Pb isotope ratio can potentially be used to determine the extent of pollutant Pb input from leaded petrol to the environment and a further objective of the work was to investigate the isotopic signature of pollutant Pb in the sediment. Concentration of ²¹⁰Pb, ²²⁶Ra, ²²⁸Ra, ²²⁸Th, ²³⁸U, ¹³⁷Cs, ¹³⁴Cs and ²⁴¹Am in the sediments were analysed using gamm a spectroscopy and the heavy metals, Pb, Zn and Cu were determined using X-ray Fluorescence. Stable Pb isotope ratios were determined using Inductively coupled plasma Mass spectrometry. The results obtained indicated that Pb is not subject to diagenetic mobility in these sediments and that ²¹⁰Pb profiles can be used to determine sedimentation rates for most of the sediment cores. lt was not possible to determine accumulation rates for the two cores from Loch Fyne by ²¹⁰Pb dating, and in this case the sedimentation rate was assessed by correlating the maximum concentration of ¹³⁷Cs in the sediments with the maximum ¹³⁷Cs discharge from Sellafield, BNFL's reprocessing plant located on the Cumbrian coast. The flux of ²¹⁰Pb to the lochs varied significantly suggesting that there has been sediment focusing of fine and/or organic rich material to the deeper sites, resulting in an enhanced flux of ²¹⁰Pb to these sediments. Sellafield waste radionuclides also provided useful chronologies by relating sediment maximum concentrations to maxima in the discharges. ¹³⁷Cs was observed to be subject to diffusive movement, invalidating the use of its total depth of penetration as a chronological indicator. The temporal trends of pollutant metal input agreed well with known historical trends and the Pb isotope profiles indicated that the onset of deposition from pollutant Pb from petrol occurred in the late 1920's. The maximum input of Pb from petrol peaked in the early 1980's and since then there has been a decrease in this input. The two sea lochs which were closest to the industrial centre of Glasgow exhibited a large anthropogenic pollutant input, confirming that these sediments have been highly perturbed by human activities, either directly as a result of sludge dumping or due to changes in land use (eg. road construction, deforestation, etc.) in the catchment. All the sea lochs reflected a change in the supply of material to the sediments over the last eighty years, indicating that increased anthropogenic activity has had an effect on these environments.
APA, Harvard, Vancouver, ISO, and other styles
6

May, Nicholas A. "Aerodynamic Consequences of a Pneumotachograph Mask Leak." Bowling Green State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1467847573.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

DiFranco, James Michael. "Minimal Occlusive Pressure with Cuffed Endotracheal Tubes: A Comparison of Two Different Techniques to Ensure a Tracheal Seal." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1471012142.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Garafolo, Nicholas Gordon. "A Compressible Advection Approach in Permeation of Elastomer Space Seals." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1271086523.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Reiser, Fabian [Verfasser]. "Remote Sensing of Antarctic Sea Ice: A Novel Lead Retrieval Algorithm and Large-Scale Spatio-Temporal Variability of Sea Ice Concentration / Fabian Reiser." Trier : Universität Trier, 2020. http://d-nb.info/1230135065/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Connelly, Douglas Patrick. "Occurrence and behaviour of trace metals in coastal waters of Bermuda, and chromium in the Sargasso Sea." Thesis, University of Southampton, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241902.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Leaf seal"

1

Oikonomides, Nicolas. Byzantine lead seals. Washington, D.C: Dumbarton Oaks, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Oikonomidès, Nicolas. Byzantine lead seals. Washington, D.C: Dumbarton Oaks, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Metcalf, D. M. Byzantine lead seals from Cyprus. Edited by Cheynet Jean-Claude and Pitsillides A. G. Nicosia: Cyprus Research Centre, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Adams, Diane L. Lead seals from Fort Michilimackinac, 1715-1781. Mackinac Island, Mich: Mackinac State Historic Parks, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Oaks, Dumbarton, ed. A collection of dated Byzantine lead seals. Washington, D.C: Dumbarton Oaks Research Library and Collection, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Karr, Ron. Lead, Sell, or Get Out of the Way. New York: John Wiley & Sons, Ltd., 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Zacos, G. Patriarchal lead seals of the years 552-1450. Istanbul: A. Veglery, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Zacos, G. Patriarchal lead seals of the years 552-1450. [England]: A. Veglery, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Karr, Ron. Lead, Sell, or Get Out of the Way. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2009. http://dx.doi.org/10.1002/9781118257876.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

MacNeill, Margaret R. Oil motion during lead closure. Calgary: Esso Resources Canada Limited, Research Dept., 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Leaf seal"

1

Carroll, Michael. "New Lead." In On the Shores of Titan's Farthest Sea, 87–89. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-17759-5_19.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Cotsonis, John A. "A seal of Patriarch Nicholas II." In The Religious Figural Imagery of Byzantine Lead Seals I, 110–19. New York : Routledge, 2020. | Series: Variorum collected studies; CS1085: Routledge, 2020. http://dx.doi.org/10.4324/9780429327193-6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Werger, M. J. A., H. J. During, and H. Van Rijnberk. "Leaf diversity of three vegetation types of Tenerife, Canary Islands." In Vegetation between land and sea, 107–19. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4065-9_9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Tiravanti, G., and R. Passino. "Tetraalkyl Lead Accident in Sea Water." In Ecoaccidents, 25–45. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4615-9450-5_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Johannessen, Jon-Arild. "The South Sea and Mississippi Bubbles of 1720." In Innovations Lead to Economic Crises, 59–87. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-41793-6_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Cotsonis, John A. "The Virgin Aigyptia (the Egyptian) on a Byzantine Lead Seal of Attaleia." In The Religious Figural Imagery of Byzantine Lead Seals I, 174–82. New York : Routledge, 2020. | Series: Variorum collected studies; CS1085: Routledge, 2020. http://dx.doi.org/10.4324/9780429327193-10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Cotsonis, John A. "An eleventh-century seal with a representation of Patriarch Antony II Kauleas." In The Religious Figural Imagery of Byzantine Lead Seals II, 43–51. Abington, Oxon ; New York : Routledge, 2020. | Series: Variorum collected studies ; CS1086: Routledge, 2020. http://dx.doi.org/10.4324/9780429327216-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Cotsonis, John A. "An early Byzantine lead seal with the image of the incredulity of Thomas *." In The Religious Figural Imagery of Byzantine Lead Seals I, 290–98. New York : Routledge, 2020. | Series: Variorum collected studies; CS1085: Routledge, 2020. http://dx.doi.org/10.4324/9780429327193-15.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Cotsonis, John A. "Narrative scenes on Byzantine lead seals (sixth-twelfth centuries)." In The Religious Figural Imagery of Byzantine Lead Seals I, 227–89. New York : Routledge, 2020. | Series: Variorum collected studies; CS1085: Routledge, 2020. http://dx.doi.org/10.4324/9780429327193-14.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Cotsonis, John A. "Onomastics, gender, office and images on Byzantine lead seals." In The Religious Figural Imagery of Byzantine Lead Seals II, 211–50. Abington, Oxon ; New York : Routledge, 2020. | Series: Variorum collected studies ; CS1086: Routledge, 2020. http://dx.doi.org/10.4324/9780429327216-10.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Leaf seal"

1

Grondahl, Clayton M., and James C. Dudley. "Film Riding Leaf Seals for Improved Shaft Sealing." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-23629.

Full text
Abstract:
Turbine shaft seals are vulnerable to rubs caused by thermal distortion, mis-alignment and rotor dynamic vibration that are often not well understood. When seals rub as a machine is brought up to operating conditions performance is compromised due to increased seal leakage. Much effort has been extended in recent years to develop seals that mitigate those losses. This paper presents a seal design with segmented film riding runners capable of non-contacting seal operation during rotor transients. Operating differential seal pressure displaces seal leaves and attached runners toward the rotor surface until balanced by hydrostatic and hydrodynamic lift. Sufficient radial range of operation is provided to follow the rotor seal surface during transients while maintaining a small seal clearance. Seal design features and function will be described and illustrated along with analysis of forces and motions for a sample application. Planned modeling and testing will also be presented. This concept promises enhanced shaft sealing by combining a leaf seal structure that provides a large range of motion to avoid rubs during startup and shutdown with runner elements capable of generating hydrostatic and hydrodynamic lift forces to maintain shaft–seal separation during all rotor displacement transients. Improved turbine performance from small operating seal clearance and extended seal life without rubs are expected benefits of the Film Riding Pressure Actuated Leaf Seal (FRPALS).
APA, Harvard, Vancouver, ISO, and other styles
2

Bowsher, Aaron, Peter Crudgington, Clayton M. Grondahl, James C. Dudley, Tracey Kirk, and Andrew Pawlak. "Pressure Activated Leaf Seal Technology Readiness Testing." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-27046.

Full text
Abstract:
This paper continues the evaluation of Pressure Actuated Leaf Seals (PALS) technology readiness for shaft and shroud sealing in power generation and aerospace applications. Seal designs tested are prototypical and constructed using processes appropriate for volume production. Results include both static and dynamic seal leakage measurements running against a 5.1 in (129.54mm) diameter smooth surface test rotor and another that simulates sealing against turbine blade shrouds. A further test was undertaken using a 2D static rig that determined acoustic noise experienced during testing was attributed to leaves vibrating at their natural frequency as a result of inter-leaf gaps. The dynamic simulated shroud test includes steps, duplicating small discontinuities of adjacent shroud sealing surfaces and slots to inject air radially under the seal leaves as may occur between shrouds on blades with a high degree of reaction. Consistent seal performance over 15 hours confirms suitability for turbine blade tip applications. Controlled deflection of PALS leaves with operating differential pressure is effective for startup rub avoidance in service as well as conformal wear-in sizing of leaf tips with the rotor. Tested leaf tip wear-in of approximately 0.010in (0.25mm) against rotor discs without hard-face coating, shows potential to eliminate seal misalignment and run-out contributions to operating seal clearance. PALS design features prevent further rubbing contact with the operating rotor after initial wear-in sizing thereby sustaining a small effective seal clearance and prospects for long seal life. Measurements of rotor surface wear tracks from the wear-in process and endurance runs are included as well as rotor and leaf tip photos. Test results support the technology readiness of the PALS concept as a viable, robust, low leakage dynamic seal for select commercial application.
APA, Harvard, Vancouver, ISO, and other styles
3

Jahn, Ingo H. J., Andrew K. Owen, Gervas Franceschini, and David R. H. Gillespie. "Negative Stiffness in Gas Turbine Leaf Seals." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-46483.

Full text
Abstract:
The stiffness of contacting shaft seals such as brush seals and leaf seals is a required characteristic to accurately predict their performance and life in the gas turbine engine. This paper describes the results of a test campaign in which a series of eccentric rotor excursions are applied at low rotational speed and engine representative pressure differences to characterise the behaviour of a prototype leaf seal. A phenomenon that may best be described as negative seal stiffness is reported. Here, the displacement of the seal rotor to an eccentric position causes a resultant force, which, rather than trying to return the rotor to a central position, acts to amplify its displacement. These data were used to develop an empirical model of the seal behaviour. It was possible to model the negative stiffness phenomenon and show that it is caused by a combination of two effects: the inherent mechanical stiffness of the leaf pack, and the aerodynamic stiffness of the seal. The latter is caused by the pressure distribution and changes in the flow field through the leaf pack as a result of the displacement of the rotor.
APA, Harvard, Vancouver, ISO, and other styles
4

Pekris, Michael J., Adele Nasti, Ingo H. J. Jahn, and Gervas Franceschini. "High Speed Characterization of a Prototype Leaf Seal on an Advanced Seal Test Facility." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-43465.

Full text
Abstract:
Advanced contacting seals, such as leaf seals or brush seals, can offer reduced leakage during engine operation when compared to conventional labyrinth seals. The flexible elements of these seals provide better compliance with the rotor during flight manoeuvres. The functionality and performance retention attributes of an engine-scale prototype leaf seal have been investigated on a seal test facility at Rolls-Royce that achieves engine-representative pressures and speeds and allows dynamic control of the seal position relative to the rotor, both concentric and eccentric. In this paper the experimental setup and the test method are described in detail, including the quantification of the measurement uncertainty developed to ASME standard PTC 19.1. Experimental data are presented that show the variations in leakage and torque over typical variations of the test parameters. Insight is gained into the interactions between the operating pressure and speed and the concentric and eccentric movements imposed on the seal.
APA, Harvard, Vancouver, ISO, and other styles
5

Jahn, Ingo H. J., David Gillespie, and Paul Cooper. "Hydrodynamic Air-Riding in Leaf Seals." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-95585.

Full text
Abstract:
Leaf seals are filament seals for use at static to rotating interfaces in rotating machinery. They are capable of withstanding significant pressure differences while minimising leakage. One of their advantages over comparable filament seals is the ability of the leaves to generate significant hydrodynamic lift at their tips. If this force is sufficient to lift the leaf tip away from the rotor, leaf wear is eliminated and an infinite life seal is created. In order to design seals that are capable of operating in this mode, a good understanding of the hydrodynamic effect and how it interacts with the seal is required. This paper presents a detailed theoretical and experimental investigation into hydrodynamic air-riding in leaf seals. First the hydrodynamic lift is investigated by analysing the flow field and forces generated between a static structure resembling the leaf tip geometry and a moving surface resembling the rotor. This allows the fundamental effects behind air-riding to be identified and quantified. Next a coupled model is presented, which captures the interactions between the lift force and the leaf tip movements. This gives a full picture of the steady-state fluid-structure interactions controlling air-riding in leaf seals. Based on these results several guidelines for obtaining air-riding are extracted. Finally the predictions from the coupled model are compared to results from a high speed test campaign using a prototype leaf seal. Good agreement is found, confirming the presence of hydrodynamic air-riding in leaf seals and demonstrating the accuracy of the presented coupled model.
APA, Harvard, Vancouver, ISO, and other styles
6

Kumar, Ramesh, Michael J. Pekris, John W. Chew, Dario Amirante, and Nicholas J. Hills. "CFD-FEA Simulation of Leaf Seal Dynamics." In 2018 Joint Propulsion Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-4897.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Nicht, Gregor, and Reinhard Willinger. "An Analytical Pressure and Leakage Model for Leaf Seals." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-76202.

Full text
Abstract:
Leafs seals are an advanced sealing technology to separate high and low pressure parts in turbomachinery. They consist of small metal sheet elements arranged in a housing around the shaft. During operation the seal should be non-contacting to minimize wear and friction. The static pressure on the surface of a single leaf appears to be the main parameter. The higher axial stiffness in comparison to brush seals allows greater differences in pressure and a hang-up effect can be averted. Assessing the discharge behaviour of the sealing is important, because leakage is resulting in less efficient turbomachinery. In this paper a new approach for an analytical calculation of the pressure distribution inside the seal is presented. It is based on a leakage flow model inside the side plate gaps. Furthermore the flow is assumed to be laminar and incompressible using simple pipe flow correlations with specified hydraulic diameters. The complete seal geometry is parameterized. The results in pressure distribution, leakage flow and static pressure on a single leaf (lift-up, blow down) are compared with the data of Nakane et al. (2004). The choice for their design is based upon their publication of the complete geometric data of the seal. Also the works of Ortner (2009) and Bischelmaier (2011), who made further investigations of this seal design, are taken into account. A good qualitative match was found, so in a second step, variations of the seal design were calculated. The influence of upstream and downstream side plate gaps ratios, heights of rotor side plate gap, numbers of leaves for constant rotor diameter and interleaf gap-gradients are investigated. For validation of the model, the results are compared as far as possible to published data. Also calculations are made for patented designs using leaves with non-rectangular cross-section to estimate, if further and more detailed research is reasonable. The leakage flow model provides a simple approach for the investigation of leaf seals regarding pressure distribution and seal-leakage with qualitative good results. Due to this, it is a good tool for fast and easy design variations compared to 2D or 3D CFD simulations.
APA, Harvard, Vancouver, ISO, and other styles
8

Fico, Vincenzo, Michael J. Pekris, Christopher J. Barnes, Rakesh Kumar Jha, and David Gillespie. "CFD and Thermal Analysis of Leaf Seals for Aero-Engine Application." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-56735.

Full text
Abstract:
Aero-engine gas turbine performance and efficiency can be improved through the application of compliant shaft seal types to certain sealing locations within the secondary air system. Leaf seals offer better performance than traditional labyrinth seals, giving lower leakage flows at design duties. However, for aeroengine applications, seal designs must be able to cope with relatively large off-design seal closures and closure uncertainties. The two-way coupling between temperatures of seal components and seal closures, through the frictional heat generated at the leaf-rotor interface when in contact, represents an important challenge for leaf seal analysis and design. This coupling can lead to leaf wear and loss, rotor overheating, and possibly to unstable sealing system behaviour (thermal runaway). In this paper we use CFD, FE thermal analysis, and experimental data to characterise the thermal behaviour of leaf seals. This sets the basis for a study of the coupled thermo-mechanical behaviour. CFD is used to understand the fluid-mechanics of a leaf pack. The leaf seal tested at the Oxford Osney Laboratory is used for the study. Simulations for four seal axial Reynolds number are conducted; for each value of the Reynolds number, leaf tip-rotor contact and clearance are considered. Distribution of mass flow within the leaf pack, distribution of heat transfer coefficient at the leaf surface, and swirl velocity pick-up across the pack predicted using CFD are discussed. The experimental data obtained from the Oxford rig is used to develop a set of thermal boundary conditions for the leaf pack. An FE thermal model of the rig is devised, informed by the aforementioned CFD study. Four experiments are simulated; thermal boundary conditions are calibrated to match predicted metal temperatures to those measured on the rig. A sensitivity analysis of the rotor temperature predictions to the heat transfer assumptions is carried out. The calibrated set of thermal boundary conditions is shown to accurately predict the measured rotor temperatures.
APA, Harvard, Vancouver, ISO, and other styles
9

Grondahl, Clayton. "Pressure-Actuated Leaf Seal Feasibility Study and Demonstration." In 45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-5167.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Pedraza-Valle, Ernesto, Georgios Papageorgiou, Aaron Bowsher, Peter F. Crudgington, Carl M. Sangan, Patrick S. Keogh, and James A. Scobie. "On the Development of a Pressure Actuated Leaf Seal for Turbomachinery Applications." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90991.

Full text
Abstract:
Abstract In gas turbines, seals that reduce the leakage between high and low pressure regions are critical for improved performance. Damaging rubs between the rotating and non-rotating parts of turbomachinery shaft seals occur due to thermal and assembly misalignments, and rotordynamic vibration during engine start-up and shut-down transients. These rubs lead to increased seal leakage and hence to reduced overall turbine efficiency and life span. The Film Riding Pressure Actuated Leaf Seal (FRPALS) is a non-contacting compliant seal under development to adapt to varying clearances without rubbing, while maintaining low leakage. This paper presents the measurements of the FRPALS in a test rig specifically designed to test novel shaft seals for turbomachinery. The rig features a 254 mm diameter rotor with a maximum surface speed of 200 m/s. Pressure drops of up to 3.5 bar can be achieved. The results of initial testing at zero rotational speed are presented for the FRPALS in a reverse orientation. The opening and closing translations of the leaves have been measured using eddy current displacement probes targeting the movable parts of the seal. The seal clearance has been shown to remain constant for a range of applied pressure drops, which indicates the stable operation of the seal, though resulting in contact with the rotor at 1.5 bar. Mass flow leakage measurements have also demonstrated the sealing performance of the FRPALS. They show the potential of the seal to film ride subject to design modifications to maintain a more uniform film thickness. The steady-state Reynolds equation for lubrication has been used to predict the pressure along the seal clearance. The predictions have been compared with pressure measurements from a transducer located in the clearance fluid thin film.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Leaf seal"

1

Ruff, E. S., and S. R. Jordan. MWTF jumper connector integral seal block development and leak testing. Office of Scientific and Technical Information (OSTI), January 1995. http://dx.doi.org/10.2172/50980.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Mickalonis, J. I. Evaluation of Cargo Leak Seal Product for use in Tank 30 Cooling Coils. Office of Scientific and Technical Information (OSTI), June 2001. http://dx.doi.org/10.2172/781736.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Finn, P. A. Guidelines to achieve seals with minimal leak rates for HWR-NPR coolant system components. Office of Scientific and Technical Information (OSTI), March 1991. http://dx.doi.org/10.2172/5559929.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Bell, J. S., and P. E. Miller. Lithostratigraphy III, Labrador sea, Stratigraphic cross section DD', Gudrid H-55 to Leif M-48. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/127168.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Harbour, J. R., and T. J. Miller. Measured leak rates of the temporary seals in DWPF canistered waste forms after three years of on site storage. Office of Scientific and Technical Information (OSTI), April 1992. http://dx.doi.org/10.2172/7190052.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Harbour, J. R., and T. J. Miller. Measured leak rates of the temporary seals in DWPF canistered waste forms after three years of on site storage. Office of Scientific and Technical Information (OSTI), April 1992. http://dx.doi.org/10.2172/10190160.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Wurl, Oliver. Biofilm-like habitat at the sea-surface: A mesocosm study, Cruise No. POS537, 14.09.2019 – 04.10.2019, Malaga (Spain) – Cartagena (Spain) - BIOFILM. University of Oldenburg, November 2020. http://dx.doi.org/10.3289/cr_pos537.

Full text
Abstract:
OceanRep OceanRep Startseite Kontakt Schnellsuche Einfache Suche Erweiterte Suche Blättern Autor Forschungsbereich Publikationsart Jahr Studiengang Neuzugänge Artikel – begutachtet Alle Über uns GEOMAR Bibliothek Open Access Policies Grundsätze Hilfe FAQs Statistik Impressum Biofilm-like habitat at the sea-surface: A mesocosm study, Cruise No. POS537, 14.09.2019 – 04.10.2019, Malaga (Spain) – Cartagena (Spain) - BIOFILM . Logged in as Heidi Düpow Einträge verwaltenManage recordsManage shelvesProfilGespeicherte SuchenBegutachtungAdminLogout - Tools Wurl, Oliver, Mustaffa, Nur Ili Hamizah, Robinson, Tiera-Brandy, Hoppe, Jennifer, Jaeger, Leonie, Striebel, Maren, Heinrichs, Anna-Lena, Hennings, Laura Margarethe, Goncalves, Rodrigo, Ruiz Gazulla, Carlota und Ferrera, Isabel (2020) Biofilm-like habitat at the sea-surface: A mesocosm study, Cruise No. POS537, 14.09.2019 – 04.10.2019, Malaga (Spain) – Cartagena (Spain) - BIOFILM . Open Access . POSEIDON Berichte . University of Oldenburg, Oldenburg, 35 pp. [img] Text Cruise_Reports_POS537_final.pdf - publizierte Version Available under License Creative Commons: Attribution 4.0. Download (2417Kb) | Vorschau Abstract Biofilm-like properties can form on sea surfaces, but an understanding of the underlying processes leading to the development of these biofilms is not available. We used approaches to study the development of biofilm-like properties at the sea surface, i.e. the number, abundance and diversity of bacterial communities and phytoplankton, the accumulation of gel-like particles and dissolved tracers. During the expedition POS537 we used newly developed and free drifting mesocosms and performed incubation experiments. With these approaches we aim to investigate the role of light and UV radiation as well as the microbes themselves, which lead to the formation of biofilms. With unique microbial interactions and photochemical reactions, sea surface biofilms could be biochemical reactors with significant implications for ocean and climate research, e.g. with respect to the marine carbon cycle, diversity of organisms and oceanatmosphere interactions.
APA, Harvard, Vancouver, ISO, and other styles
8

CAE Correlation of Sealing Pressure of a Press-in-Place Gasket. SAE Imposter, April 2021. http://dx.doi.org/10.4271/2021-01-0299.

Full text
Abstract:
The Press-in-Place (PIP) gasket is a static face seal with self-retaining feature, which is used for the mating surfaces of engine components to maintain the reliability of the closed system under various operating conditions. Its design allows it to provide enough contact pressure to seal the internal fluid as well as prevent mechanical failures. Insufficient sealing pressure will lead to fluid leakage, consequently resulting in engine failures. A test fixture was designed to simulate the clamp load and internal pressure condition on a gasket bolted joint. A Sensor pad using TEKSCAN equipment was used to capture the overall and local pressure distribution of the PIP gasket under various engine loading conditions. Then, the Sensor pad test results were compared with simulated CAE results from computer models. Through the comparisons, it is found that the gasket sealing pressure of test data and CAE data show good correlation for bolt load condition 500N when compared to internal pressure side load condition of 0.138 MPa & 0.276 MPa. Moreover, the gasket cross-sectional pressure distribution obtained by experimental tests and CAE models correlated very well with R2 ranging from 90 to 99% for all load cases. Both CAE and Sensor pad test results shows increase in sealing pressure when internal side pressure is applied to the gasket seal.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Leaf seal' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography