From 1895, the traditional date for the birth of cinema as everybody knows it (that is, the projection of celluloid, in public space, for money--a racket first stumbled upon by Auguste and Louis Lumiere in the basement of the Grand Cafe in Paris), until now, the 35mm photographic image has been the preferred canvas for motion-picture art. Through…
Park, S. H.; Krejci, Ivo; Lutz, F
An in-vitro study revealed that a celluloid strip-finished composite surface discolored more than the polished composite surface. Thus, the celluloid strip-finished composite surface may not cure enough compared with the polished composite surface.
Greece is a country that considers itself to be part of the Western civilization, though still a lot oriental elements exist in its culture and way of thinking. LGBT people are considered to be either invisible or pointed out as metaphorical or literal punch bag. So it was a surprise that a year after the first Athens Gay Pride (2005), two Greek movies appeared with homosexuality as their central theme. The first one 'The Blue Dress', a drama about the journey of a young boy till he turns int...
Molte destinazioni hanno basato la loro strategia di promozione affidandosi ai prodotti multimediali, considerando i vantaggi legati alla potenza incisiva del cinema. Il cinema conserva un ruolo privilegiato grazie alla sua capacità di suggestione. Lo scopo dello studio è di migliorare la comprensione del cineturismo in location in film noti e di avventura. Quali sono le immagini che i turisti hanno di Venezia visionando i film di James Bond? Le interviste sono state condotte con un gruppo di...
Full Text Available Molte destinazioni hanno basato la loro strategia di promozione affidandosi ai prodotti multimediali, considerando i vantaggi legati alla potenza incisiva del cinema. Il cinema conserva un ruolo privilegiato grazie alla sua capacità di suggestione. Lo scopo dello studio è di migliorare la comprensione del cineturismo in location in film noti e di avventura. Quali sono le immagini che i turisti hanno di Venezia visionando i film di James Bond? Le interviste sono state condotte con un gruppo di studenti che hanno visto la pellicola Casino Royale. I risultati mostrano che Venezia nel mondo di Bond contiene elementi attrattivi ma rimane piuttosto in secondo piano. Film and Tourism share a close relationship. The aim of the study is to improve understanding of film induced tourism on locations featured in popular films. The present research used the case of James Bond film to explore this issue about Venice. Interviews were conducted with students who have seen Casino Royale movie. These interviews indicate that Venice, into the world of Bond contains elements attractive but it remains of little importance compared to Bond.
Critically analyzing films allows for the interrogation of how such binaries as normal/abnormal, good/bad, and moral/immoral are culturally (re)inscribed, who sets the boundaries of what is deemed socially legible, and who gets to decide where these boundaries are set. This article utilizes critical discourse analysis to explore the transgender…
Carranza, F; García-Godoy, F
A simple and esthetic technique for restoring cariously involved primary maxillary incisors is described. The technique includes mini-pins, a preformed celluloid crown and resin-based composite. PMID:10477982
Shows how 28 contemporary films' messages about educational administrators shape and limit popular discourse about schools and their mission. Hollywood's celluloid images cannot capture our school communities' complex, challenging everyday realities. Practitioners should understand how mass media shapes policy debates about public institutions and…
Mendes, Fausto Medeiros; De Benedetto, Monique Saveriano; del Conte Zardetto, Cristina Giovannetti; Wanderley, Marcia Turolla; Correa, Maria Salete Nahás Pires
A case report describing a technique for the restoration of endodontically treated primary maxillary incisors with resin composite short posts and celluloid strip crowns in a 3-year-old boy is presented. The technique offers the advantages of using one restorative material, improving esthetics, and reducing chairtime and costs. PMID:15470991
Pollard, M A; Curzon, J A; Fenlon, W L
Caries of the primary incisors is a common problem that can be arrested if recognized early enough. However, the arrested decay is unsightly. Celluloid 'strip' crown forms, used with composite resin, now allow the restoration of even the most badly decayed primary incisors. The authors describe this quick and efficient technique. PMID:1884866
Historia de la competencia entre el cine y la televisión Los efectos de las nuevas tecnologías en la formas de consumir y producir cine en España: la explosión del cine en la televisión y el posible fin de las películas en celuloide History of the competition between film and television The effects of new technologies in ways of consuming and producing films in Spain: the explosion of television and film at the possible end of the movie on celluloid
Ciro Enrique Hernández Rodríguez
Full Text Available Descripción del proceso de estrecha competencia entre dos grandes medios audiovisuales tradicionales, la televisión y el cine, a través de aquellas innovaciones tecnológicas de las se han podido beneficiar cada uno, hasta acabar señalando la forma en la que uno se está convirtiendo en el medio preferente o exclusivo para el disfrute del otro.Description of the process of competition between tow traditional greats media, the television and the film, which has got the advantage by technological improvement until the television become in the preferred or exclusive way enjoy the films.
Bayrak, Sule; Tunc, Emine Sen; Tuloglu, Nuray
The case report presented here is of a 4-year-old girl with severely decayed maxillary anterior teeth. After root canal treatment, the primary maxillary central and lateral incisors were reinforced using polyethylene fiber-reinforced composite resin short posts and restored using celluloid strip crowns. The technique described here offers a simple and effective method for restoring severely decayed primary anterior teeth that reestablishes function, shape, and esthetics. PMID:19272811
Arora, Ruchi; Raiyani, Chirag M.; Singh, Vikram; Katageri, Abhinandan Anand
The esthetic concern of severely mutilated primary anterior teeth in the case of early childhood caries has been a challenge to pediatric dentist. Early childhood caries is the most common chronic disease of the preschool child. The case report presented here is of a three year old boy with severely decayed maxillary anterior teeth. After root canal treatment, the primary maxillary central incisors were reinforced using modified omega post and followed by using celluloid strip crowns. The tec...
The treatment of auditiory tube chronic catarrh in XIX century by pharmagological drugs, by special apparatuses of surprising technical sophistication, by electrisation and faradisation is discussed first of all. The dilatation of auditory tube by dilators was the diagnostical and therapeutical methods, especially preferenced by Victor Urbantschitsch, Hermann Schwartze, Jean P. Bonnafonte, Albert Calmettes and Bronisław Taczanowski, Teodor Heiman and Samuel Meyerson. The dilators were building of celluloid, whale-bone, silver and were absorbed by argentum nitrate, vaseline. The technique, difficulties and effects of dilatation are described in more detail. The complications of this operation is presented finally. PMID:17131853
Full Text Available According to a United Nations report, populationgrowth and urbanization are veritably creating a planet ofslums, which is expected to double by 2030.The slums in thecities of Africa and Asia are growing by more than a millionpeople every week. The report states that the growth of cities will be the single largest influence on development in the21st century (Ibidem.It is my endeavour in this article to examine slumsubaltern with reference to the fiction and the film SlumdogMillionaire. Based on Vikas Swarup’s Q & A, Danny Boylehas aptly brought out a celluloid sensation portrayingslum-subaltern.
Fadeyev, V.; Haber, C.; Maul, C.; McBride, J.W.; Golden, M.
Audio information stored in the undulations of grooves in a medium such as a phonograph disc record or cylinder may be reconstructed, without contact, by measuring the groove shape using precision optical metrology methods and digital image processing. The viability of this approach was recently demonstrated on a 78 rpm shellac disc using two dimensional image acquisition and analysis methods. The present work reports the first three dimensional reconstruction of mechanically recorded sound. The source material, a celluloid cylinder, was scanned using color coded confocal microscopy techniques and resulted in a faithful playback of the recorded information.
Aa.Vv., Emozioni in celluloide. Come si ricorda un film, Raffaello Cortina, Milano, 1989. Aa.Vv., Les images du corps, «Champs visuels. Revue interdisciplinaire de recherches sur l’image», 7, 1997. Aa.Vv., Le gros plan, inserto monografico di «Cinematographe», 25/26, 1977. Aa.Vv., Aprés Deleuze. Philosophie et esthétique du cinéma, Place Publique Éditions, Paris, 1996. Aa.Vv., Art, regard, écoute. La perception à l’œuvre, Press Universitaire de Vincennes, Paris, 2000. Allen, Richard-Smith, Mu...
Full Text Available This note explores the notion of comic superheroes as tools for the empowerment of children. The author details interventions in Rwanda and Brazil, and their different usages of superheroes. With a focus on the superhero’s pre-cloak stage—the stage prior to their employing superpowers—the author offers glimpses of current work in progress to help therapists empower orphaned children. While this area of research is at an early stage, its potential among health professionals is growing. Thus the comic superhero may be more than celluloid, as health professionals learn to use his superpowers.
Arora, Ruchi; Raiyani, Chirag M; Singh, Vikram; Katageri, Abhinandan Anand
The esthetic concern of severely mutilated primary anterior teeth in the case of early childhood caries has been a challenge to pediatric dentist. Early childhood caries is the most common chronic disease of the preschool child. The case report presented here is of a three year old boy with severely decayed maxillary anterior teeth. After root canal treatment, the primary maxillary central incisors were reinforced using modified omega post and followed by using celluloid strip crowns. The technique described here offers a simple and effective method for restoring severely decayed primary anterior teeth that reestablishes shape, function, and esthetics. PMID:27003983
Maria Carolina Salomé Marquezin
Full Text Available The objective of this case report was to describe the oral rehabilitation of a five-year-old boy patient diagnosed with amelogenesis imperfecta (AI in the primary dentition. AI is a group of hereditary disorders that affects the enamel structure. The patient was brought to the dental clinic complaining of tooth hypersensitivity during meals. The medical history and clinical examination were used to arrive at the diagnosis of AI. The treatment was oral rehabilitation of the primary molars with stainless steel crowns and resin-filled celluloid forms. The main objectives of the selected treatment were to enhance the esthetics, restore masticatory function, and eliminate the teeth sensitivity. The child was monitored in the pediatric dentistry clinic at four-month intervals until the mixed dentition stage. Treatment not only restored function and esthetic, but also showed a positive psychological impact and thereby improved perceived quality of life. The preventive, psychological, and curative measures of a young child with AI were successful. This result can encourage the clinicians to seek a cost-effective technique such as stainless steel crowns, and resin-filled celluloid forms to reestablish the oral functions and improve the child’s psychosocial development.
Full Text Available This article charts a media historical relation between radiation and celluloid film, ranging from the downwind 1956 production of The Conqueror to early scientific imaging practices, war photography, war documentaries, military industrial film, and contemporary artists working on radiation aesthetics. Posing the collection as a diagnostic media ecology, this article argues that the valuable evidence provided by the environmental metadata stored in celluloid film is the product of ecological warfare and violence. By turning to the material sciences for a better understanding of how nuclear weapons affect media on large spatial and temporal scales we gain a parallax view to how photographic practices – defined as the aesthetic exchange of light and energy – occur autonomously within our ecology, although some of these forces are mobilised in deadly and imperceptible ways. By demonstrating that non-human agencies released by Cold War energy policies have contaminated military industrial and commercial film archives alike, this article asserts that nuclear testing and warfare have contributed to a global condition of test-subjectivity that can be evidenced by diagnostic media ecology.
Marquezin, Maria Carolina Salomé; Zancopé, Bruna Raquel; Pacheco, Larissa Ferreira; Gavião, Maria Beatriz Duarte; Pascon, Fernanda Miori
The objective of this case report was to describe the oral rehabilitation of a five-year-old boy patient diagnosed with amelogenesis imperfecta (AI) in the primary dentition. AI is a group of hereditary disorders that affects the enamel structure. The patient was brought to the dental clinic complaining of tooth hypersensitivity during meals. The medical history and clinical examination were used to arrive at the diagnosis of AI. The treatment was oral rehabilitation of the primary molars with stainless steel crowns and resin-filled celluloid forms. The main objectives of the selected treatment were to enhance the esthetics, restore masticatory function, and eliminate the teeth sensitivity. The child was monitored in the pediatric dentistry clinic at four-month intervals until the mixed dentition stage. Treatment not only restored function and esthetic, but also showed a positive psychological impact and thereby improved perceived quality of life. The preventive, psychological, and curative measures of a young child with AI were successful. This result can encourage the clinicians to seek a cost-effective technique such as stainless steel crowns, and resin-filled celluloid forms to reestablish the oral functions and improve the child's psychosocial development. PMID:25705526
Sharaf, Aly A
Early childhood caries (ECC) represents a challenge to pediatric dentists especially, when teeth are badly destroyed. ECC involves the upper anterior teeth early in life and by the time the dentist sees the child, most of the coronal structure is lost. Dentally, this is a very devastating situation for both the dentist and parents, as in many cases, extraction of these teeth is the only option. With the introduction of new adhesive systems and restorative materials, a new approach for treating these teeth is explained and documented by clinical cases, where fiber core posts are introduced into the root canals of primary incisors for a distance of 2 to 3 mm. It is retained in place by flowable composite, then the coronal part is reconstructed by a strip crown to restore the crown form. After a follow up period of one year, only 2 teeth out of 30 had to be extracted. The failure was attributed to failure in pulpal therapy rather than failure in the restorations, which were totally intact. A laboratory testing of the fracture load resistance of the restored teeth proved that this technique significantly improved the fracture load resistance of composite celluloid crowns, making it a valuable procedure to consider when the coronal tooth structure is not enough to support and retain a composite celluloid strip crown. PMID:11990042
The past decade has seen Parkes once again involved in a wide range of space tracking activities that have added to its illustrious legacy. This contribution is a personal recollection of those tracking efforts - both real and celluloid. We begin in a light-hearted vein with some behind-the-scenes views of the popular film, "The DISH", and then turn to more serious contributions; discussing the vital role of the telescope in alleviating the great "traffic jam" at Mars in 2003/04 and salvaging the Doppler Wind Experiment as the Huygens probe descended though the atmosphere of Saturn's largest moon, Titan, in mid-decade. We cap off the decade with a discussion of the search for the missing Apollo 11 slow-scan TV tapes.
Full Text Available Fantasies of man travelling into space form a main part of the popular movie genre ‘Science Fiction’. These celluloid visions are not only fantasies of improving transport, they also convey a meaning in a figurative sense. They can be seen as a modern adoption of one of humanities oldest metaphors, ‘life as a sea fare voyage’: the meaning, which was once expressed by this ‘nautical metaphor’, has been transferred and can nowadays be found in films, which show astro-nauts crossing the frontier from known space into the unknown space. In order to conclude on their attitude towards technological progress in the early 20th century, the two oldest space travel movies, Le Voyage dans la Lune (F 1902 and Le Voyage a Travers L’Impossible (F 1904 will be analyzed.
Hussein G. El Charkawi
Full Text Available Background: A simple technique was presented in this clinical report for orientation of a bone anchored auricular prosthesis.Methods: The proposed technique includes drawing the intact ear on a transparent celluloid paper or radiographic film and flipping it to the opposite side and relating it to the fixed anatomical features on the face of patient.Results: The drawing, by this way provides a simple and easy way to duplicate and transfer the exact size and position of the intact ear to the defect side.Conclusions: This technique provides a simple, safe, inexpensive and time saving yet, an accurate and effective surgical template that orients the craniofacial implants to the confines of the definitive auricular prosthesis. It is indicated for restoration of single missing external ear either in aplasia, injuries and total resection.
As for the macroscopic distribution in tissues and microscopic distribution in cells of 10B administrated to patients, which are important in thermal neutron capture therapy, it is difficult to say that the method of quantitative determination has been established. The authors tried some experiments by solid state track detection for the determination. That is, the trial determinations of boron in cells by solution method (wet process), filter paper method (dry process) and the method using an electron microscope are reported. If the maximum thermal neutron fluence available is assumed to be 1014/cm2 and the minimum detectable surface density of etch pits is 104/cm2, the detection limit of 10B concentration is estimated as about 10-2 μg/ml either in the solution method or in the filter paper method. In the quantitative determination of boron distribution at cell level with an electron microscope, a sample of tissue was covered with a plastic thin film, etched after the irradiation with thermal neutrons, and the tissue and the thin film were simultaneously observed with the transmission electron microscope. The thin film thickness of about 0.1 μm is suitable for the sliced tissue of about 0.1 μm thick. The existence of fast neutrons at the time of thermal neutron irradiation causes the generation of etch pits by recoiled particles in celluloid, and increases background counts, while γ-dose above 106 rad leads to the deterioration of celluloid composition. Some automatic methods of counting etch pits under consideration are described. (Wakatsuki, Y.)
Full Text Available The “cinema of interactions” in the title of my paper alludes to Tom Gunning’s paradigmatic conception of early cinema as a “cinema of attractions.” Borrowing from the idea that electronic textuality marks what has been called the late age of print, I argue that the history of cinema up to the present moment can be seen as an extension of early cinema. In describing the current cinematic moment in this fashion, I do not mean to suggest that film will disappear in the face of video games and other digital media, but rather that it will continue increasingly to be engaged with the social, technological, and aesthetic forms and practices of digital media. This engagement will not be marked (as many digital enthusiasts contend by the emergence of a distinctively new digital medium (and the concomitant abandonment of the technologically outmoded medium of celluloid film, but rather by the emergence of multiply networked, distributed forms of cinematic production and exhibition. Indeed I am convinced that in this sense we already find ourselves with a digital cinema—not as a distinctively new medium but as a hybrid network of media forms and practices. The “cinema of interactions” in the title of my paper alludes to Tom Gunning’s paradigmatic conception of early cinema as a “cinema of attractions.” Borrowing from the idea that electronic textuality marks what has been called the late age of print, I argue that the history of cinema up to the present moment can be seen as an extension of early cinema. In describing the current cinematic moment in this fashion, I do not mean to suggest that film will disappear in the face of video games and other digital media, but rather that it will continue increasingly to be engaged with the social, technological, and aesthetic forms and practices of digital media. This engagement will not be marked (as many digital enthusiasts contend by the emergence of a distinctively new digital medium
Takano, T.; Hanawa, R.; Saegusa, K.; Ikeda, H.
In fracture of rock, radio wave emission was found experimentally . This phenomenon could be used to detect a rock fracture during an earthquake or a volcanic activity . The cause of the radio wave is expected to be micro-discharges, which are generated by an inhomogeneous potential distribution around micro-cracks. In order to better understand the phenomena and clarify the cause of radio wave emission, we carried out experiments to detect the emission in the cases of a collision or contact between various materials. We used receiving systems with great sensitivities and sufficient frequency bandwidths at 1 MHz-, 300 MHz-, 2 GHz-, and 18 GHz-bands. The specimen materials are as follows: Steel (2) Brass (3) Copper (4)Small coin (5)Celluloid. We obtained the following results: The signal was detected for the specimen of (1) to (4), but not for (5). The signal is composed of intermittent spikes which include waves with a frequency close to the center frequency of each frequency band. The power is strongest at the lower frequencies among all frequency bands. The more details will be given in the presentation. The origin of radio wave emission from the metal is supposed to be discharges between materials in these experiments. It is surprising that even a small coin can generate a significant amount of radio wave. Accordingly, it is inferred that all amount of charges are discharged through a conductive metal. On the other hand, celluloid did not generate radio wave, though the specimen was sufficiently charged by brushing. It is inferred that a quite localized charge was discharged but the remaining charges were blocked due to poor conductivity. Extending this hypothesis, large-scale contact should have occurred between broken fragments for the radio wave generation in the aforementioned rock fracture experiments. Turbulence of the fragments is a candidate for the explanation.  K. Maki et al., "An experimental study of microwave emission from compression
Oliveira, Rosa M.
One of the most interesting aspects of art holography is the study of 3D holographic image. Over the centuries, artists have chased the best way to represent the third dimension as similar to reality as possible. Several steps have been given in this direction, first using perspective, then photography, and later with movies, but all of these representations of reality wouldn't reach the complete objective. The realism of a 3D representation on a 2D support (paper, canvas, celluloid) is completely overcome by holography. In spite of the fact that the holographic plate or film is also a 2D support, the holographic image is a recording of all the information of the object contained in light. Our perception doesn't need to translate the object as real. It is real. Though immaterial, the holographic image is real because it exists in light. The same parallax, the same shape. The representation is no more an imitation of reality but a replacement of the real object or scene. The space where it exists is a space of illusion and multiple objects can occupy the same place in the hologram, depending on the viewer's time and place. This introduces the fourth dimension in the hologram: time, as well as the apparent conflict between the presence and the absence of images, which is just possible in holography.
Among the over one thousand patents bearing Thomas A. Edison's name are several for vacuum coating processes including chemical vapor deposition, evaporation, and sputter deposition. Beginning in 1880 Edison applied for patents that described carbon deposition processes that would now be called pyrolytic chemical vapor deposition. In 1884 Edison applied for a patent (granted in 1894) that described coating by evaporation in a vacuum by direct resistance heating or arc heating using a continuous current. Edison called the process 'electro vacuous deposition'. He prophetically wrote, 'the uses of the invention are almost infinite'. Edison also employed sputter deposition and in 1900 applied for a patent on a 'Process of Coating Phonograph Records'. Issued in 1902, the patent describes using a 'silent or brush electrical discharge' produced by an induction coil. The National Phonograph Company, one of Edison's many enterprises, used the sputtering process to deposit a thin layer of gold on wax phonograph cylinder masters that could then be electroplated to form molds to mass produce celluloid duplicates. The method was used for 20 years, from 1901 to 1921. It enabled the reproduction of cylinder grooves less than 0.001 in. deep at a density of 200 grooves per in. From 1913 to 1921, 10-in.-diameter Edison Diamond Disc phonograph records were made using the same method. Sputtering was abandoned in 1927, as it could not be scaled up to produce the 12 in. disks that were then introduced
Steinberg, Ely L; Segev, Eitan; Drexler, Michael; Ben-Tov, Tomer; Nimrod, Snir
The progression from standard celluloid films to digitalized technology led to the development of new software programs to fulfill the needs of preoperative planning. We describe here preoperative digitalized programs and the variety of conditions for which those programs can be used to facilitate preparation for surgery. A PubMed search using the keywords "digitalized software programs," "preoperative planning" and "total joint arthroplasty" was performed for all studies regarding preoperative planning of orthopedic procedures that were published from 1989 to 2014 in English. Digitalized software programs are enabled to import and export all picture archiving communication system (PACS) files (i.e., X-rays, computerized tomograms, magnetic resonance images) from either the local working station or from any remote PACS. Two-dimension (2D) and 3D CT scans were found to be reliable tools with a high preoperative predicting accuracy for implants. The short learning curve, user-friendly features, accurate prediction of implant size, decreased implant stocks and low-cost maintenance makes digitalized software programs an attractive tool in preoperative planning of total joint replacement, fracture fixation, limb deformity repair and pediatric skeletal disorders.
Eric Priyo Prasetyo
Full Text Available Background: One of the success criteria for a composite resin restorative material is the surface roughness that can be achieved through polishing. Considering that there are so many types of composite resin materials on the market, including polycrystalline composites, information on this type of composite’s surface roughness is needed. Purpose: The aim of this laboratory experiment was to compare the surface roughness difference between microhybrid and polycrystalline composite after polishing. Methods: In order to obtain this, a laboratory experiment was done. Four groups of composites were produced, the first two groups consist of microhybrid composite and the second two groups consist of polycrystalline composite. Two groups with the same material were treated with two different treatments as follows: the first group was not finished (the surface is under celluloid matrix, the second group was finished and polished. After these treatments, each sample’s surface was measured using surface roughness measuring instrument and then the Results: were analyzed statistically using independent t-test (α = 0.05. Conclusion: The result showed that after polishing, the surface roughness of polycrystalline composite is lower than that of microhybrid composite.
Full Text Available Obiettivo del contributo è quello di proporre alcuni spunti di riflessione sul caso della città di celluloide più nota al mondo: Los Angeles. Più in particolare s’intende analizzare la stretta relazione che intercorre tra l’attrattività turistica della metropoli e l’industria cinematografica. Come ben noto, Los Angeles continua da quasi un secolo a suggestionare l’immaginario collettivo in quanto mecca del cinema e patria di Hollywood, l’industria che ha creato il sogno americano. Tuttavia LA, oggi, è anche una delle prime dieci città mondiali. Rappresenta l’esempio di come l’industria creativa (e il cinema è creatività per definizione sia riuscita a realizzare un sistema economico e d’innovazione tecnologica che funziona come polo di attrazione sia per tutti coloro che intendono sviluppare nuove attività, non possibili in altre parti del mondo, sia per visitatori e turisti attirati da un insieme di fattori emozionali legati alla notorietà dei luoghi del sistema cinematografico e dello spettacolo. Sulla base dell’analisi della letteratura e facendo seguito a esperienze di studio sul campo, il contributo vuole evidenziare la stretta connessione costruita nel corso di più di un secolo tra Hollywood, il luogo, e Hollywood, l’industria, per dimostrare come il luogo di produzione rappresenti una componente unica del prodotto finale, un’autenticazione di qualità soggettive e simboliche in grado di amplificare il valore economico intrinseco e di provocare un’attrazione crescente di attività e persone verso l’area metropolitana di Los Angeles. This paper discusses Los Angeles as the best-known celluloid city in the world, and focuses particularly on the close relationship between its attractiveness for tourists and the film industry. For almost a century Los Angeles has exerted influence over the collective imagination as the mecca of cinema and home of Hollywood, the industry that created the American dream
Highlights: • Phase change material of Rubitherm20 was applied with the air-conditioner under the climate of Thailand. • PCM was used to reduce cooling load and electrical power of the air-conditioner. • Mathematical model of the packed ball bed of PCM was presented to predict the thermal performance. - Abstract: In this study, a concept of using phase change material (PCM) for improving cooling efficiency of an air-conditioner had been presented under Thailand climate. Rubitherm20 (RT-20) was selected to evaluate the thermal performance by reducing the air temperature entering the evaporating coil. The model of PCM celluloid balls had been performed with the air-conditioner. For the experiment, 2 TR of R-134a air-conditioner was chosen to test a pack bed of PCM balls with thickness 40 cm. The pressure drops of the air flowing through the bed were considered with and without a set of by-pass tubes along the height of the storage bed. The mathematical model of the air-conditioner with the PCM storage was developed and verified with the testing results. From the study results, it could be seen that pressure drops of the bed with and without bypass tubes were nearly the same results. Thus, PCM ball pack bed using RT-20 without bypass tubes was used to improve the cooling efficiency of the air-conditioner. The experimental result of the modified unit was compared and verified with the mathematical model, which agreed quite well with the simulation result. Finally, the model was used to analyze the economic result, which found that the electrical consumption of the modified air-conditioner could be decreased around 3.09 kW h/d. The saving cost from the PCM bed could be 9.10% of 170.03 USD/y and the payback period was around 4.15 y
Waggoner, William F
A variety of esthetic restorative materials are available for restoring primary incisors. Knowledge of the specific strengths, weakness, and properties of each material will enhance the clinician's ability to make the best choice of selection for each individual situation. Intracoronal restorations of primary teeth may utilize resin composites, glass ionomer cements, resin-modified ionomers, or polyacid-modified resins. Each has distinct advantages and disadvantages and the clinical conditions of placement may be a strong determining factor as to which material is utilized. Full coronal restoration of primary incisors may be indicated for a number of reasons. Crowns available for restoration of primary incisors include those that are directly bonded onto the tooth, which generally are a resin material, and those crowns that are luted onto the tooth and are some type of stainless steel crown. However, due to lack of supporting clinical data, none of the crowns can be said to be superior to the others under all circumstances. Though caries in the mandibular region is rare, restorative solutions for mandibular incisors are needed. Neither stainless steel crowns nor celluloid crown forms are made specifically for mandibular incisors. Many options exist to repair carious primary incisors, but there is insufficient controlled, clinical data to suggest that one type of restoration is superior to another. This does not discount the fact that dentists have been using many of these crowns for years with much success. Operator preferences, esthetic demands by parents, the child's behavior, and moisture and hemorrhage control are all variables which affect the decision and ultimate outcome of whatever restorative treatment is chosen.
Kapusevska, Biljana; Dereban, Nikola; Popovska, Mirjana; Nikolovska, Julijana; Radojkova Nikolovska, Vеrа; Zabokova Bilbilova, Efka; Mijoska, Aneta
Acrylics are compounds polymerized from monomers of acrylic, metacrylic acid or acrylonitrates. The purpose of this paper is to present the technology and use of acrylics for provisional dentine protection in the practice of dental prosthodontics. For this reason, we followed 120 clinical cases from the everyday clinical practice, divided into 4 groups of 30 patients who needed prosthetic reconstruction. The first group included cases in which we applied celluloid crowns for dentine protection, for the second group we used acrylic teeth from a set of teeth for complete dentures; in the third and fourth groups the fabrication was done with the system of an impression matrix and the acrylic resin block technique respectively. In all the examined patients, the gingival index by Silness and Loe and the vitality of the dental pulp were verified clinically, after preparation and 8 days from the placement of the provisional crown. The value for dental sensitivity measured after preparation was 2.59, and 8 days after the placement of the provisional crown it bwas 3.1. From these results we can conclude that after the 8th day from the placement of the provisional crown, there was an adaptation period, characterized by a decrease in the painful sensations. The value of the Silness and Loe gingival index measured after the preparation was 1.34, and 8 days from the placement of the provisional crown was 0.94. The results inclined us to the fact that the provisional acrylic crowns facilitated the reparation of the periodontal tissue. PMID:24566021
Waggoner, William F
A variety of esthetic restorative materials are available for restoring primary incisors. Knowledge of the specific strengths, weakness, and properties of each material will enhance the clinician's ability to make the best choice of selection for each individual situation. Intracoronal restorations of primary teeth may utilize resin composites, glass ionomer cements, resin-modified ionomers, or polyacid-modified resins. Each has distinct advantages and disadvantages and the clinical conditions of placement may be a strong determining factor as to which material is utilized. Full coronal restoration of primary incisors may be indicated for a number of reasons. Crowns available for restoration of primary incisors include those that are directly bonded onto the tooth, which generally are a resin material, and those crowns that are luted onto the tooth and are some type of stainless steel crown. However, due to lack of supporting clinical data, none of the crowns can be said to be superior to the others under all circumstances. Though caries in the mandibular region is rare, restorative solutions for mandibular incisors are needed. Neither stainless steel crowns nor celluloid crown forms are made specifically for mandibular incisors. Many options exist to repair carious primary incisors, but there is insufficient controlled, clinical data to suggest that one type of restoration is superior to another. This does not discount the fact that dentists have been using many of these crowns for years with much success. Operator preferences, esthetic demands by parents, the child's behavior, and moisture and hemorrhage control are all variables which affect the decision and ultimate outcome of whatever restorative treatment is chosen. PMID:12412967
Medical advances that have prolonged the average life span have generated increased need for new materials that can be used as tissue and organ replacements, drug delivery systems and/or components of devices related to therapy and diagnosis. The first man-made plastic used as surgical implant was celluloid, applied for cranial defect repair. However, the first users applied commercial materials with no regard for their purity, biostability and post-operative interaction with the organism. Thus, these materials evoked a strong tissue reaction and were unacceptable. The first polymer which gained acceptance for man-made plastic was poly(methyl methacrylate). But the first polymer of choice, precursor of the broad class of materials known today as hydrogels, was poly(hydroxyethyl methacrylate) synthesized in the fifties by Wichterle and Lim. HEMA and its various combinations with other, both hydrophilic and hydrophobic, polymers are till now the most often used hydrogels for medical purposes. In the early fifties, the pioneers of the radiation chemistry of polymers began some experiments with radiation crosslinking, also with hydrophilic polymers. However, hydrogels were analyzed mainly from the point of view of phenomena associated with mechanism of reactions, topology of network, and relations between radiation parameters of the processes. Fundamental monographs on radiation polymer physics and chemistry written by Charlesby (1960) and Chapiro (1962) proceed from this time. The noticeable interest in application of radiation to obtain hydrogels for biomedical purposes began in the late sixties as a result of the papers and patents published by Japanese and American scientists. Among others, the team of the Takasaki Radiation Chemistry Research Establishment headed by Kaetsu as well as Hoffman and his colleagues from the Center of Bioengineering, University of Washington have created the base for spreading interest in the field of biomaterials formed by means of
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Abstract: The moving image has traditionally provided a catalyst for screen-based culture to develop a language that evokes a means and experience of storytelling positioned in-between the image and the viewer. However, this article will frame such a relationship by distancing the moving image from a cinematic or industrial context to instead look to the amateur cohort of private films commonly referred to as ‘home movies’, In doing so, I will consider what Bachelard refers to as a returning to childhood in search of memory, to form a reasoned understanding of the ways in which memory itself can be grafted in-between film and experience. This article will focus on celluloid film which I will define as vintage home movies, namely Standard 8mm and Super 8mm film contributed from domestic-orientated archives. The discussion will examine two main video installations evidencing selected work in the wider series.Filmic Memorials (2002-06 comprised of a substantial body of work established from my family collection of 8mm home movies.
Résumé: Dans notre culture de l'écran, l 'image mobile a souvent servi de catalyseur à l