共查询到20条相似文献，搜索用时 15 毫秒
1.
《Communication monographs》2012,79(1):59-63
From the time phoneticians and linguists first became interested in tongue‐palate contacts in the study of the production of speech sounds, palatography, in one form or another, has been employed. From crude beginnings, wherein the palate or tongue was coated with various mixtures, usually quite unsavory, so that the tongue‐palate wipe‐off areas might be observed after the sound was articulated and the results recorded on stone, on plaster models, or outline drawings of the palate, through many versions of the pseudo‐palate, X‐ray photographs, planimeter measurements, the linking of kymography and palatography, to a simple recording device of mirrors and a reflex camera combined once more with the method of coating the palate itself, palatography has been employed from the late 1870's to the present day. It is likely that as long as linguists and phoneticians are interested in sounds and their production, palatography, in some form, will continue to be employed. Through its use it has been determined that identical sounds can be made by contacts over a large range on the palate, that the stutterer's speech has more variation than the speech of the non‐stutterer, that the same person frequently makes the same sound in various ways, that the size and depth of the palate alter the articulation of sounds, that there is greater accord between the consonant and the following vowel than between the consonant and the preceding vowel, and that palatograms change with the rate of articulation. The discoveries that may yet be made give this particular phase of phonetics an intriguing future. 相似文献
2.
AbstractJapanese sculptures are made of wood, dry lacquer, clay, gilt bronze and stone. Buddhistic statues, made of wood, are the most abundant. The painting techniques of the wooden sculptures, including ground coating, pigments, and application of Japanese lacquer, are described, and typical examples of Buddhistic statues are given. Specific case studies on a clay statue and a wooden sculpture are made. 相似文献
3.
ABSTRACTConservation of wooden objects exposed outdoors is extremely difficult and complex due to their constant exposure to fluctuating weather conditions and biological degradation. Filling the gaps in such objects requires the use of specific materials that in particular can adapt to changes in wood dimensions in response to humidity variations. Various materials have been used so far for filling voids in wooden artefacts but none of them was entirely suitable. Therefore, the authors have attempted to provide the basic characteristics of the selected commonly used filling materials based on pine wood powder or glass microballoons as fillers and Paraloid® B-72, Klucel® G, or glutin glue as binders, as the first step in research aiming at developing new and more appropriate gap-fillers. Special attention was paid to the dimensional stability of filling materials upon drying and exposure to water vapour and liquid water. The overall results indicate that among the examined fills those consisting of Paraloid® B-72 and glass microballoons revealed best properties as they were relatively dimensionally stable upon drying and exposure to moisture – despite high absorption of water – and were quite easy to finish. Generally, better properties were observed for filling materials containing higher concentrations of adhesives and these materials will be modified in the next step of the research. Since the main drawbacks of the examined gap-fillers were low water resistance, poor dimensional stability upon drying or exposure to water vapour or liquid water, and fragility or friability, future research into their modification will head towards improvement of the above-mentioned properties. 相似文献
4.
《Communication monographs》2012,79(3):165-182
Rhetorical critics have ignored the study of non‐western movements and have not paid serious attention to the construction of theories which help to explain and interpret the rhetorical form of movements. This study attempts to fill both voids by synthesizing concepts from rhetorical theory and anthropology to explain the linguistic process which made up the Israeli peace movement. An assessment of the rhetorical strategies, a listing of the indirect consequences of the movement, and the implications of the study to the development of rhetorical theory is provided to complete the critical act. 相似文献
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6.
《文物保护研究》2013,58(1):24-29
AbstractOptical and electron-beam microprobe examination of pairs of calcite crystals, mounted approximately 50 microns apart and then immersed for various times in solutions containing a barium compound and urea, showed that these crystals were cemented together by the formation of an adherent bond between the calcite substrate and the witherite filling the void space between the crystals. The bonding material was found to be composed of a series of solid solutions of barium calcium carbonate, high in calcium content at the original surface and increasing in barium content as the distance from the original crystal surface increased. The relatively rapid rate of reaction suggests that the formation of the solid solutions proceeds by a co-precipitation mechanism. The formation of the solid solutions is thought to occur most readily in pores and cracks where the calcium ions generated by the dissolution of calcite cannot readily diffuse into the bulk solution. Application of the barium hydroxide-urea treatment to the preservation of decayed calcareous stone is reviewed. 相似文献
7.
《文物保护研究》2013,58(1):21-28
AbstractThe restoration of the Cavaillé-Coll Romantic organ housed in La Merced Church of Burgos, Spain is described in this paper. The organ was affected by a fire that took place in the church. The effect of the fire on the pipes differed depending on their location within the instrument. A combination of analytical techniques (X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray analysis, particle-induced X-ray emission, metallography, and specific density) allowed the accurate determination of the microstructures and compositions of the alloys used to make the different pipes of the organ, some of which had a high tin content and others which had a high lead content. The most damaged pipes were replaced by reconstructed pipes made out of metallic sheets of the same composition as the originals, to ensure a historically accurate sound. 相似文献
8.
《文物保护研究》2013,58(4):228-238
AbstractA procedure for collection of decay rate data from stone samples exposed in actual environmental conditions is described. This provides precise weekly decay rate data. Data were collected for 16 consecutive months for 200-year-old weathered and freshly quarried Portland stone. Problems with the use of an acrylic sheet as a control were encountered and overcome. It is suggested that glass is a better control surface. Decay rates of new and old stone differed, with new stone typically being 60–70mg/m2/day. Close agreement was found between new stone replicates. Rates for old stones were much more variable and ranged from 90–270mg/m2/day. Differences were also found in the relative contributions of solution and particulate loss to total loss between the two stones. 相似文献
9.
《图书馆管理杂志》2013,53(1-2):429-451
SUMMARY A virtual shelf for nursing that closely mirrors what previously was found on a physical reference shelf is now a reasonable goal. Advantages of doing this for nursing students and faculty in an academic setting are enumerated. Overviews of relevant vendor and publisher interfaces and models are included. The authors present a selected list of appropriate electronic reference sources that demonstrate how e-books and Internet sites can be combined to build a virtual reference shelf in this subject area. 相似文献
10.
Tiziana Lombardo Marie Wörle Vera Hubert Erwin Hildbrand Christina Hinterleitner Ingo Mayer 《文物保护研究》2020,65(2):65-76
ABSTRACTPreviously, heavy use of biocides for the treatment of objects made of organic materials in museum collections (e.g. ethnographic, historical collections) was very common. Now suitable decontamination methods/technologies are being sought. A decontamination treatment by li-CO2 was optimized that considered the specific requirements of museum objects. The treatment was tested on model materials artificially contaminated with biocide solutions containing dichlorodiphenyltrichloroethane (DDT), pentachlorophenol (PCP), lindane, and permethrin or cypermethrin. High decontamination was achieved for DDT, lindane, PCP, and permethrin on artificially biocide loaded wool and wood model materials. Optimal process parameter settings for li-CO2 decontamination include a single 30?min cycle for woolen materials and three sequential 30?min cycles each for wood. These methods allow a reduction of at least 90% of all biocides for wool and between 70% and 85% for wood. Decontamination of the latter was more effective for less polar biocides as DDT and permethrin. Despite a significant improvement in decontamination for wood using co-solvents such as acetone, ethanol, and methyl tertiary-butyl ether (MTBE), their use is not recommended due to the increased risk of damage to the objects, in particular if a surface coating is present. 相似文献
11.
《文物保护研究》2013,58(1):63-64
AbstractWhite crystals have been found to grow on the surface of a number of wax artifacts. Analysis was carried out on samples of wax and crystals taken from a Victorian wax fruit arrangement displaying crystalline growth. The possible relationship between crystallization, cracking and changes in temperature is explored. 相似文献
12.
《文物保护研究》2013,58(3):274-282
AbstractA study of the composition and phase distribution of the corrosion layers on three ferrous objects, excavated at K2 (Bambandyanalo), an archaeological site in South Africa, was conducted. The objective of the study was to obtain information that can contribute to conservation procedures to be performed on the iron artefacts from this site. Examination of cross sections by means of energy-dispersive X-ray spectroscopy coupled to a scanning electron microscope (SEM–EDX), X-ray powder diffraction (XRD), and micro-Raman spectroscopy revealed the same corrosion composition and structure for all the objects under study, namely an internal layer adjacent to the metal surface with ghost inclusions and an external layer containing quartz grains. The study also revealed that the presence of magnetite (Fe3O4), maghemite (γFe2O3), and lepidocrocite (γ-FeOOH) within the internal layer is the only difference between the chemical compositions of iron corrosion products within the two layers. The results also made it possible to retrace the corrosion history during burial and long-term storage. 相似文献
13.
ABSTRACTChalconatronite, Na2[Cu(CO3)]2·3H2O, is formed as a corrosion product when copper alloys are exposed to sodium carbonate solutions in the air. This also happens when metals come into contact with corroding soda glass which forms alkaline surface films in reaction with humidity from clean air. More often, substantial amounts of formaldehyde are present indoors which react to formate via the Cannizzarro reaction and accumulate over time in the films. Twenty cases of chalconatronite (including two mentioned in the literature) are reported as occurring on heritage objects with glass in contact with copper alloys: Baroque reliquaries with set glass gems, enamel on metal (sixteenth century and a modern replica of intentionally unstable composition), Christmas tree glass baubles with wires, glass buttons with metal shanks, a glass figure with a wire support, miners’ lamps, and a glass framed daguerreotype. These confirmed identifications might help conservators in investigating similar cases to shed more light on the formation conditions. 相似文献
14.
《文物保护研究》2013,58(2):64-75
AbstractIn this paper are described the measurements, carried out on a considerable number of ancient bronzes, using a portable radioisotope X-ray fluorescence (XRF) unit. This unit allows, in a non-destructive way, the quantitative determination of copper, zinc, tin and lead in bronzes and brasses, in a measuring time of about 100 seconds. The XRF results are in good agreement with those obtained by traditional methods. 相似文献
15.
《文物保护研究》2012,57(1):1-13
ABSTRACTShortly after a major renovation at the Royal Ontario Museum, it was noticed that the glass panels in many of the new display cases exhibited fogging or hazing on the surface, sometimes in very specific patterns. Cleaning removed the fogging temporarily, but it began to reappear within 12 months. An investigation of fogged glass panels in display cases was undertaken to understand the source of the fogging and to develop an appropriate cleaning method. This included the analysis of residues from glass panels in several galleries, and surface imaging and compositional analysis of glass panels. The fogging residues on the glass panels consist mainly of sodium salts of organic acids and inorganic anions. Sources of the sodium in the residues include air particulate matter and the glass itself. The organic acids and inorganic anions that form salts with the sodium cations likely originate from volatile organic compounds (VOCs) and particulate matter in the air. Examination of the fogging patterns on the glass panels revealed that the sodium salts grow on marks made during cleaning attempts and the manufacturing process. These cleaning and manufacturing marks contain greasy residues that encourage crystal growth. Because of the variation in surface cleanliness, panels with more cleaning and manufacturing residues appear to be heavily fogged while those with less may appear to be unfogged in the museum display cases. A cleaning protocol was tested on two of the glass panels, and was found to remove all traces of grease and fogging residue. 相似文献
16.
Roberto Giustetto Elena Maria Moschella Mariano Cristellotti Emanuele Costa 《文物保护研究》2017,62(8):474-493
An in-depth scientific survey revealed the deterioration mechanisms affecting the ‘Santa Maria della Stella’ church in Saluzzo, Italy, where various salt crystallization processes are strongly damaging the building materials and artworks. Rainwater seepage permeates the vault and interior, causing: (1) epsomite growth as interstitial columnar crystals (resulting in pictorial coating detachment) or superficial, powdery efflorescence; (2) formation of nesquehonite/hydromagnesite crusts on wall paintings; and (3) nitratine growth causing pigment staining and detachment. These processes involve selective Mg2+ mobilization from magnesian-lime mortars and bacterial-induced formation of nitrates from guano, with consequent precipitation of degrading salts. The study confirms how characterization of all deterioration agents is fundamental to planning a viable cultural heritage conservation and restoration programme. 相似文献
17.
《Communication monographs》2012,79(4):215-228
The rhetorical foundations of social change may be found, not only in polemical discourse but in popular literary discourse as well. A case in point is that of the concept of the evolutionary sublime, an amalgam of the rhetorical/aesthetic theory of the sublime and scientific evolutionary theory, which had significant implications for personal morality and social policy. This reservoir of concepts was transmitted to its readership, the American middle class of the nineteenth century, through the popular literature of natural history; it subsequently served as a basis for the persuasive arguments of the conservation movement. This study traces the emergence of rhetorical argument from bases in popular literary and intellectual culture. 相似文献
18.
《文物保护研究》2013,58(3):185-193
AbstractThe two Stangengläser, tall cylindrical vessels from the beginning of the seventeenth century, are described in detail. The severely damaged Stangengläser, decorated with diamond-point engraving and cold-painting, were challenging to treat. Research preceding the conservation revealed differences in decorating techniques. Samples of the paint layers were analyzed using micro-Fourier transform infrared spectroscopy. Two layers of resinous varnish with a middle layer of paint containing a plant gum were found on the Stangenglas with Allegory of Caritas and Zierotin coat of arms. In the plain paint layer of the Stangenglas with dancing couples, egg white was identified as the binder. The glasses, analyzed using scanning electron microscopy with energy dispersive X-ray spectrometry, had similar potash–lime–silica compositions, which seems to be characteristic for glass from Bohemian lands. Results of analysis contributed to the discussion about the possible provenance of the Stangengläser, the glassworks at Wilhelmberg, South Bohemia. 相似文献
19.
《文物保护研究》2013,58(2):114-117
AbstractProblems were encountered when preparing objects from the Pacific islands for exhibition. These specimens were of wood with shell inlay. Cleaning with non-ionic detergent and distilled water had no effect on the dull shell surface; solvents were little better;finally, glass fibre brushes were tried with very good results. Precautions should be taken when using glass fibre brushes; these include the wearing of protective gloves, dust masks, and the provision of a vacuum cleaner to remove fragments of broken glass fibre and dust from the shell surface. 相似文献
20.
Abstract Using Etienne Wenger’s concept of a community of practice, UH Libraries’ Liaison Services Department developed departmental members’ emotional intelligence. The social learning structure of the community of practice mirrors the emotional intelligence learning model theorized by Daniel Goleman. This case study demonstrates how this approach can benefit a unit within an academic library. Using a community of practice approach to build a space for social learning creates an environment in which library workers are able to learn and practice the skills of emotional intelligence among their colleagues and within the context of the norms and values of the work environment. 相似文献