Развитието на колекционерството и антиквариата през последните
десетилетия наложи една нова специалност – експертизата на културни
ценности. Тя става още по-необходима, като се има предвид появата на
много фалшификати както на произведения от Античността и Средновековието, така и на творби на български (и чужди) художници от по-ново
време. Предлаганият учебник е изключително важен за подготовката на
такива специалисти, тъй като им дава не само познания върху експертизата от гледна точка на стил, техника и иконография на изкуството, но
също така и върху юридическата и административната страна на проблема. А тя е съществена част от работата на един експерт

The overwhelming majority of medical instrumentation are executed form metalic materials, form the category of austenitic steinlees steel and titan alloys, which poses a good rezistance to corrosion, appropriate mechanical properties, and a good biocompatibility. The lifetime for the medical instrumentation is generaly low due to the modification of surface properties of metal tools from poor maintenance by medical personnel performing decontamination and sterilization operations (having no knowledge of material science), or the the improper use of chemical reagents or low quality of water used in decontamination processes. Identified solutions to improve surface properties of these parts of surgical instruments made ​​of metallic consist of deposition of protective coatings. In this experimental study, we perform different coatings on a substrate made by stainless steel type 316L. We use different coating materials, each deposited ​​by a specific method: hard ceramic biomaterials (...

Soft TiB2-BN-C hetero-modulus ceramics were sintered with the assistance of in-situ reactions during the hot pressing of TiN-B4C precursors. TiB2 formation was observed already after the hot pressing at 1100 °C, remaining the only phase identifiable by XRD even after sintering at 1500 °C. Analysis of reaction kinetics allows us to assume that the most probable reaction controlling stage is boron atoms sublimation and gas phase transfer from B4C to TiN. Reactive sintering route allows almost full densification of TiB2-BN-C composite ceramics at 1900 °C. The processes enable the formation of multilayer h-BN nanosheets inside the TiB2 matrix. The manufactured TiB2-33BN-13C ceramic with K1C = 5.3 MPa·m1/2 and HV = 1.6 GPa is extremely thermal shock-resistant at least up to quenching temperature differential of 800 °C. The sintered UHTC composite can be machined into complex geometry components.

The effect of composition, sintering parameters, frequency and temperature on the dielectric parameters of ZnO-based ceramic semiconductors (cersems) having small amounts of Bi203, Sb203, CoO, MnO 2, La203 and/or Cr20 a has been investigated. The unusually high dielectric constant of these composites, arising d.ue to a two-phase microstructure has been explained on the basis of a depletion layer model. The agreement in values of barrier height and donor concentration calculated from C-z-l." plot, Hall measurement and I-V characteristics of these cersems supports the validity of barrier and depletion layer models. The depletion and inter-granular layers are estimated to be nearly 102 mn and 1-2 nm respectively. The observed variation of dielectric constant/capacitance with sintering parameters and temperature of measurement has also been explained on the basis of simplified microstructure and depletion layers. The loss peak (f,,x) observed at 300 kHz remains practically unaltered with change in composition and sintering parameters. The observed dielectric dispersion in the range 102-10 ~ Hz, exhibiting multiple relaxation times and activation energy of relaxation process as 0-36 eV, has been explained on the basis of Debye-type relaxation process originating due to trapping, detrapping and possibly due to scattering of carriers in the depletion regions.

Purpose: The aim of this study was to determine effect of compressive cyclic loading on fatigue resistance and microleakage of monolithic CAD/CAM molar ceramic and composite crowns. Materials and Methods: Thirty-two extracted molars were prepared to receive ...

Precise control over scaffold material, porosity, and internal pore architecture is essential for tissue engineering. By coupling solid free form (SFF) manufacturing with conventional sponge scaffold fabrication procedures, we have developed methods for casting scaffolds that contain designed and controlled locally porous and globally porous internal architectures. These methods are compatible with numerous bioresorbable and non-resorbable polymers, ceramics, and biologic materials. Phase separation, emulsion-solvent diffusion, and porogen leaching were used to create poly(l)lactide (PLA) scaffolds containing both computationally designed global pores (500, 600, or 800 mm wide channels) and solvent fashioned local pores (50-100 mm wide voids or 5-10 mm length plates). Globally porous PLA and polyglycolide/PLA discrete composites were made using melt processing. Biphasic scaffolds with mechanically interdigitated PLA and sintered hydroxyapatite regions were fabricated with 500 and 600 mm wide global pores. PLA scaffolds with complex internal architectures that mimicked human trabecular bone were produced. Our indirect fabrication using casting in SFF molds provided enhanced control over scaffold shape, material, porosity and pore architecture, including size, geometry, orientation, branching, and interconnectivity. These scaffolds that contain concurrent local and global pores, discrete material regions, and biomimetic internal architectures may prove valuable for multi-tissue and structural tissue interface engineering. r

The in vivo behavior of infrared-heated, RF magnetron-sputtered hydroxylapatite (HA) and calcium pyrophosphate (DCPP) coated titanium discs was investigated. The discs were implanted subcutaneously in the back of six goats for 2, 4, 8 and 12 weeks. At the end of the study, coated discs were removed and examined on their physicochemical properties by X-ray diffraction (XRD) and scanning electron microscopy (SEM), including energy dispersive spectroscopy (EDS). Also, implants were prepared for light microscopical evaluation of the tissue response. The results showed that heat-treated HA coatings showed a stable behavior, i.e. no changes in the XRD pattern occurred during implantation. Also, no dissolution of the coating was observed by SEM. EDS revealed that the Ca/P ratio of the HA coatings remained stable during implantation. In contrast, heat-treated DCPP coatings showed a compositional change into apatite and tricalcium phosphate (TCP) during implan-tation. This was confirmed by the SEM and EDS analysis. The Ca/P ratio of the DCPP coatings changed from 0.8 to 1.52 during implantation. Finally, histology showed that both heat-treated HA and DCPP coatings showed no adverse tissue response, as characterized by the presence of thin, dense fibrous tissue capsule. Consequently, it can be concluded that 2 m thick heat-treated, RF magnetron-sputtered HA and DCPP coatings are of sufficient thickness to withstand dissolution during 12 weeks of implantation in a subcutaneous location in goats. In addition, both coatings showed a biocompatible tissue behavior. Further, heattreated DCPP coatings revealed a gradual compositional change into apatite and TCP.

In this study, erbia (Er2O3)-doped Bi2O3 ceramics were prepared from sol–gel derived nanocrystalline powders. The morphological properties were investigated by scanning electron microscopy. X-ray diffraction (XRD) analysis was carried out in order to characterize the phase and crystal structure of the powder samples. Temperature dependent electrical properties were determined by thermogravimetry/differential thermal analyzer (TG/DTA) and 4-point probe techniques. The stable fluorite face centered cubic δ-type phase was observed at room temperature from the XRD result, which was supported by the DTA and temperature dependent electrical conductivity measurements. Electrical conductivity results indicate that there is a transition approximately at 650 °C, which can be attributed to an order–disorder transition (ODT). The activation energy values obtained from the Arrhenius approach for heating and cooling process were presented. Two regimes, corresponding to high temperature region (HTR) and low temperature region (LTR), were observed. As a result of morphological changes during the ODT, the electrical conductivity modifies and the activation energies are different for studied sample at HTR and LTR.

The most commonly used bearing couple in prosthetic hip or knee joint replacements consists of a cobalt-chrome (CoCr) metal alloy articulating against ultrahigh-molecular-weight polyethylene. Ceramics have been used as an alternative to metal-on-polyethylene in joint replacement surgery of arthritic hips and knees since the 1970s. In prosthetic hip and knee bearings, ceramic surfaces offer a major benefit of drastically reduced wear rates and excellent long-term biocompatibility, which can increase the longevity of prosthetic hip and knee joints. This benefit is important clinically because hip and knee replacement has become a very common surgical procedure, particularly in the United States, and because these procedures are being increasingly performed in younger patients who place greater demands on the prosthetic bearings. However, ceramics are brittle and the risk of catastrophic bearing failure in vivo, while rare, is a major concern. Improvements in material quality, manufacturing methods, and implant design have resulted in a drastic reduction of the incidence of such failures, so that modern ceramic bearings are safe and reliable if used with components of proven design and durability. Future material improvements are actively being investigated to reduce the risk of ceramic-bearing failures even further. The purpose of this article is to review the structure, properties, applications, and limitations of the ceramics that have been used in orthopedic bearings, and to describe the new ceramic composite materials and surface treatments that will be available for joint replacement surgery in the near future. Feature D. Green-contributing editor *Member, American Ceramic Society.

The Cost as well as the time taken by the construction work has always attracted attention of Civil Engineers to be supplemented by some cheaper and fast settling construction material. This paper focuses the advantages of using Concrete canvas or Concrete cloth for Rapid and fast construction of structures like canals and many other which are made for temporary purpose. In the paper the engineering properties of the material is also discussed. This material being ceramic is fire resistant as well as water proof.

Статья посвящена предварительной характеристике комплекса керамической посуды из раскопок Старого Арсенала в Киеве – территории женского Вознесенского монастыря XVII – начала XVIII в. Выделены наиболее многочисленные виды сосудов и отмечены их характерные особенности, в том числе посуды с клеймами, импортной керамики. Приводятся некоторые аналогии формам и орнаментам посуды среди керамики других территорий, а также среди книжной графики того времени.

The article is dedicated to a preliminary characteristic of the ceramic crockery complex from archaeological excavations in the convent „The Resurrection” of the 17th – early 18th centuries, which is located on the territory of the Old Arsenal in Kyiv. The characteristic qualities of the most multiple vessels are marked out as well as the crockery with brands and import ceramics. They carry out analogies of the crockery shapes and ornaments among ceramics of other territories and among book graphs of that time either.

RESUMEN

Esta Tesis Doctoral se ha conformado para dar a conocer e intentar revitalizar, el amplísimo repertorio de culturas que han manejado la representación a través del barro y la cerámica, en los territorios de América Latina. Por lo tanto, se muestran en este trabajo aquellas culturas que demostraron o demuestran vínculos artísticos con el material, por un lado, y por otro, concentrándonos en la representación del barro en el arte (escultórico). Éste último, en occidente fue considerado en el pasado, material y técnica artesanal, sometido a los límites y lindes entre arte y no arte; sin embargo, con este estudio se constatan, las fuertes relaciones culturales, artísticas y escultóricas de esta disciplina (y de forma ininterrumpida), con las sociedades latinoamericanas, consideradas como no-occidentales. Este estudio aborda un extenso recorrido por épocas pasadas y su evolución, hasta llegar a la cerámica escultórica producida en la actualidad, tanto en referencia a la representación que originan los artistas contemporáneos de hoy, adscritos a la tradición occidental, como del arte popular e indígena de estos territorios (sometidos, en mayor o menor grado, a patrones artísticos foráneos, en los últimos cinco siglos de su historia, modificando, y en cierta medida infravalorando, su carácter distintivo). Por consiguiente, con esta investigación se trata de dar a conocer estas cuestiones, en las que se entremezclan otras muchas que aún están en discusión, inmersas en el desarrollo del arte contemporáneo, teniendo en cuenta a su vez, los avances de los estudios científicos y los cambios que se generan en nuestros días, ampliando nuestra mirada hacia la multiculturalidad.

Abstract:

This doctoral thesis has been formed to raise awareness and to try to revitalize the vast repertoire of cultures that have handled the representation through clay and ceramics, in the territories of Latin America. As shown in this work, those cultures demonstrated or demonstrate artistic links with the material, on one hand and on the other, focusing on the representation of clay in art (sculpture). The latter was considered in the past, materials and craftsmanship, subject to the limits and boundaries between art and non- western art, but this study demonstrates the strong cultural, artistic and sculptural relations of this subject, and uninterruptedly, with Latin American societies, considered as non-Western. This Tesis address an extensive tour of past eras, and its evolution, up to the sculptural ceramics produced today, in reference to the representation which originates contemporary artists today, assigned to the western tradition, as the popular and indigenous art of these territories (subjected, in a  greater or lesser degree, to foreign artistic patterns, in the last five centuries of its history, modifying, and to some extent underestimated, the own character they had). Therefore, this research tries to make known these issues, in which many others are mixed and still under discussion, immersed in the development of contemporary art, considering in turn the progress of scientific studies and changes that are generated today, expanding our gaze to the multiculturalism.

Macroporous ceramics with pore sizes from 400 nm to 4 mm and porosity within the range 20%-97% have been produced for a number of well-established and emerging applications, such as molten metal filtration, catalysis, refractory insulation, and hot gas filtration. These applications take advantage of the unique properties achieved through the incorporation of macropores into solid ceramics. In this article, we review the main processing routes that can be used for the fabrication of macroporous ceramics with tailored microstructure and chemical composition. Emphasis is given to versatile and simple approaches that allow one to control the microstructural features that ultimately determine the properties of the macroporous material. Replica, sacrificial template, and direct foaming techniques are described and compared in terms of microstructures and mechanical properties that can be achieved. Finally, directions to future investigations on the processing of macroporous ceramics are proposed.

Poza kilkoma pionierskimi publikacjami w badaniach i literaturze na temat historycznego detalu architektonicznego niewiele — jak dotąd —
uwagi poświęcano ceramicznym i cementowym okładzinom posadzkowym. Artykuł jest próbą przybliżenia zagadnienia produkcji i upowszechnienia ceramicznych i cementowych płytek posadzkowych na przełomie XIX i XX w. w zaborze rosyjskim — jako tematu na styku historii gospodarczej, społecznej, historii sztuki i architektury — poprzez zarysowanie okoliczności narodzin i rozwoju nowoczesnej produkcji płytek w drugiej połowie XIX w., przybliżenie technologii wytwarzania obiektów oraz przedstawienie najważniejszych firm produkcyjnych i pozostawionych przez nie realizacji.

Apart from a few pioneering publications regarding the historical
architectural detail, both in the field of research and literature, relatively little attention has been given to ceramic and cement floor tiles. This paper is an attempt to outline the topic of production and dissemination of floor tiles in the late 19th and early 20th century in the Russian sector of partitioned Poland. The subject is shown as an issue located at the intersection of economic history, social history, history of art and architecture, by outlining the history of birth of industrial
tile manufacturing in the second half of the 19th century, and by exemplifying the manufacturing technology of these artifacts, as well as presenting the most significant companies and their production releases.

"Los ceramistas tradicionales del Perú, a la tecnología prehispánica, incorporaron durante la Colonia técnicas.

En la costa norte Simbilá y Chulucanas se ponen en práctica el paleteado, el uso de labradoras y el negativo. Cajamarca era una importante región de producción, queda en la memoria la elaboración de la pallama con reminiscencias de las vasijas vidriadas del S. XVIII.

En Ayacucho sobresale el distrito de Quinua donde se continúan elaborando las iglesias de techo. En esta región fue reconocido con un estilo propio el ceramista Leoncio Tineo Ochoa.

En Puno, en Santiago de Pupuja y Pucará hay la producción de chuas o chuwas que son platos vidriados, los famosos “Toritos de Pucará”, las apajatas o jarras matrimoniales y las limitatas, incalimitas o botellas ornamentales.

En Cusco, que desde la Colonia generó talleres artesanales de cerámica vidriada y en la primera mitad del S. XIX se impulsó en el ámbito campesino la elaboración de objetos bruñidos sin vidriar y de color rojizo. En la Amazonía está la cerámica de los Shipibo-Conibo, que se caracteriza por su decoración llamado kené y por una pasta muy fina.
"

The buried clay pot or pitcher method is one of the most ef®cient traditional systems of irrigation known and is well suited for small farmers in many areas of the world. Buried clay pot irrigation uses buried, unglazed, porous clay pots ®lled with water to provide controlled irrigation to plants. The water seeps out through the clay wall of the buried clay pot at a rate that is in¯uenced by the plant's water use. This leads to very high ef®ciency, even better than drip irrigation, and as much as 10 times better than conventional surface irrigation. This method is also very effective in saline soil or when saline irrigation water must be used. It has proved useful for land restoration in very arid environments.

Focused on uncoated ceramics, this tutorial paper is divided into two main sections. The first section deals with the operational phases required prior to firing (drying, piling, fuel supply). Then, the second chapter deals with the transformations that occur in the clayey paste during firing. An overall understanding of the firing process includes several issues to be considered and properly investigated. Thereafter, the thermal behaviour of several mineralogical phases (calcite and dolomite; quartz and cristobalite; K-feldspar and plagioclase; rutile and anatase; haematite, maghemite, hercynite and metallic Fe; illite, muscovite, biotite and chlorite; wollastonite, melilite, anorthite and monticellite; diopside and kaolinite) is described. Four brief chapters are further dedicated to the development of the amorphous/glassy component, to the matrix and its porosity, to the colour and the organic matter and to the variations in chemical composition, respectively. The concluding remarks provide a short list of the analytical techniques that have been commonly applied to the investigation of firing conditions and a concise summary of the state of the art of the "firing issue". The method to be applied in future experimental reproductions and the opportunity itself to investigate the "firing issue" in various contexts are further discussed.

f. giudice, r. panvini (a cura di) Il greco, il barbaro e la ceramica attica Immaginario del diverso, processi di scambio e autorappresentazione degli indigeni volume primo monografie della scuola di specializzazione in archeologia dell'università di catania atti del convegno int. di studi (14-19 maggio 2001 -catania, caltanissetta, gela, camarina, vittoria, siracusa) © copyright 2010 «l'erma» di BretschneIder via cassiodoro, 19 -00193 roma

Na području antičke luke u Zatonu kraj Nina pronađena je pri hidroarheološkim istraživanjima velika količina keramičkoga materijala, među kojim autor izdvaja i obrađuje dva zoomorfna reci-pijenta. Interdisciplinarnim radom autor nastoji objasniti simboliku ovdje obrađivanih zoomorfnih recipijenata. Komparativnim istraživanjima u vidu analogija upotpunjuje pregled i distribuciju ostalih zoomorfnih recipijenata maloazijske provenijencije pronađenih na prostoru antičke Liburnije. Također će u radu po prvi put biti naznačene poneke poje-dinosti izrazito dokumentacijske i tehničke naravi ovdje obrađi-vanih zoomorfnih recipijenata, poput dodjeljivanja inventarnoga broja, obrade arheološkoga materijala, kolorita i tonaliteta boje, dimenzija, zapremnine i drugih odrednica.

From  the  large  quantity  of  pottery  found  during  the  hydroar-
chaeological research in the ancient port of Zaton near Nin, the
author  singles  out  and  discusses  here  two  zoomorphic  recep-
tacles. Using an interdisciplinary approach, the author endeav-
ors to explain the symbolism of the zoomorphic receptacles dis-
cussed here. In his comparative research, the author uses analo-
gies to complement the overview and distribution of the other
zoomorphic receptacles of the Asia Minor origin found on the
territory of the ancient Liburnia.
Also for the first time, the work provides details of how these
zoomorphic receptacles were documented (e.g. the way of as-
signing their inventory numbers) and some technical details (the
processing of the archaeological material, its colors and shades,
dimensions, capacity and other determinants).

Les poteries des sites néolithiques de Chalain et de Clairvaux (Jura), entre 3200 et 2900 av. J.-C., ont fait l'objet d'une étude technologique à approches multiples. Une des principales questions posées par ce travail est de savoir si les techniques de fabrication des poteries ont évolué au cours du temps. Cette problématique a été testée à partir d'habitats lacustres qui possèdent de très bonnes conditions d'enregistrement stratigraphique et dendrochronologique. Les observations et les analyses de 718 poteries, étroitement associées à des expériences, ont permis la reconstitution de toutes les étapes de plusieurs chaînes opératoires. Les analyses pétrographiques et paléontologiques ont permis de retrouver la provenance des matériaux utilisés et de constituer des groupes de pâte. Observations et analyses des textures et des structures des pâtes, étroitement associées à des expériences de fabrication de poteries, ont permis de reconstituer plusieurs techniques de préparation des pâtes, de façonnage, de traitement de surface, de finition et de cuisson.

Macroporous ceramics with pore sizes from 400 nm to 4 mm and porosity within the range 20%-97% have been produced for a number of well-established and emerging applications, such as molten metal filtration, catalysis, refractory insulation, and hot gas filtration. These applications take advantage of the unique properties achieved through the incorporation of macropores into solid ceramics. In this article, we review the main processing routes that can be used for the fabrication of macroporous ceramics with tailored microstructure and chemical composition. Emphasis is given to versatile and simple approaches that allow one to control the microstructural features that ultimately determine the properties of the macroporous material. Replica, sacrificial template, and direct foaming techniques are described and compared in terms of microstructures and mechanical properties that can be achieved. Finally, directions to future investigations on the processing of macroporous ceramics are proposed.

In the archaeological drilling excavation carried out in Antalya Kaleiçi, the remains/traces of two buildings, which are thought to be ceramic kilns, were found on cadastral block 120, parcel 20. In addition, a thick wall was found outside the kiln finds. It can be said that this wall belongs to a ceramic workshop. When the findings in the field are interpreted, the kiln/kilns and ceramic workshop can be dated to the Roman Period. The superstructure of the larger main ceramic kiln, traces of which are visible especially at the foundation level, has been demolished and blurred. However, it is expected to have sections such as the entrance, stoking chamber, combustion chamber, columnar support, venthole, firing chamber, observation hole (peer-hole), firing chamber loading part and chimney as in the Roman Period. In addition, the presence of European ceramics with blue-white willow motifs in the pile inside the main ceramic kiln along with other ceramics makes it possible to suggest that this Furnace had a domed/curved upper structure and probably collapsed in a period of time like a century or two ago. Next to the main ceramic kiln, a second trace of a ceramic kiln, apparently unconnected with it, was observed. Since it was installed directly on the ground, only circular burn marks were detected. It is understood from diameter of the burn that it was smaller than other kiln. The adjacent larger and deeper kiln may have been opened as a result of the reduction in the use and function of this smaller kiln. However, there is also possibilty of using both kilns at the same time. The smaller kiln may have assumed a more secondary or substitute characteristic if used simultaneously. The tripod shaped ceramic mats found in the excavation must have been used in these kiln/kilns.

23/10/2013: 8th International Congress of Phoenician and Punic Studies, Carbonia-S. Antioco.

Il ruolo centrale del santuario moziese nell’archeologia dei Tofet è riconosciuto da tempo, così come l’affidabilità della sequenza stratigrafica del campo d’urne stabilita con acribia da Antonia Ciasca durante gli scavi condotti negli anni 1964-1973.
In questo contributo, alla luce del recente riesame del corpus vascolare del santuario, verrà presentata la sequenza ceramica del campo d’urne, ponendo l’attenzione sul repertorio in uso nelle fasi più antiche (strati VII-VI). Attraverso la ricostruzione di una griglia cronologica estesa dalla documentazione del Tofet agli altri contesti coevi di Mozia e del Mediterraneo, saranno analizzati i processi in corso nei momenti immediatamente successivi alla fondazione dell’insediamento. Sono queste le fasi – sollecitate dall’instaurarsi delle prime relazioni commerciali – in cui diverse componenti e tradizioni culturali si amalgamano, andando a formare quelli che saranno i caratteri distintivi di Mozia, una comunità aperta al centro del Mediterraneo.

Las cerámicas neolíticas peinadas y pintadas andaluzas y su relación con los soportes muebles orgánicos de la "Cueva de los Murciélagos" de Albuñol (Granada) RESUMEN: Se realiza un breve análisis sobre las decoraciones pintadas de los contenedores orgánicos de la Cueva de los Murciélagos de Albuñol (Granada) y sus posibles relaciones con expresiones similares en algunos soportes cerámicos y esquemas rupestres neolíticos, en el ámbito andaluz.

Gas-turbine engines used in transportation, energy, and defense sectors rely on high-temperature thermal-barrier coatings (TBCs) for improved effi ciencies and power. The promise of still higher effi ciencies and other benefi ts is driving TBCs research and development worldwide. An introduction to TBCs-complex, multi-layer evolving systems-is presented, where these fascinating systems touch on several known phenomena in materials science and engineering. Critical elements identifi ed as being important to the development of future TBCs form the basis for the fi ve articles in this issue of MRS Bulletin. These articles are introduced, together with a discussion of the major challenges to improved coating development and the rich opportunities for materials research they provide.

Con l'intento di apportare nuovi dati alla conoscenza della classe della ceramica comune 1 , ancora così poco studiata, vengono qui presentati dei lotti di materiali conservati nel Museo Civico "F.L. Belgiorno" di Modica, provenienti dall'area sud-orientale dei Monti Iblei, territorio che recenti indagini 2 hanno rivelato essere occupato in maniera capillare durante la tarda antichità: i numerosi insediamenti sono documentati, quasi esclusivamente, dalle necropoli ( ).

Decorative and applied art is born in the interaction of traditions and the constant search for new forms. The enormous potential of the knowledge gained over the past decades in the study of objects from archaeological excavations, ethnographic observations of the results often remain out of sight of contemporary artists. On the other hand, many scientific reconstructions remain speculative, and discoveries are unclaimed. Synthesis of theoretical and practical knowledge will allow to solve this problem. Conference aim is interaction of science and practice, the study of decorative and applied arts in archeology, ethnography, art history and the synthesis of traditions and innovations in contemporary art In the key topic of the theme "From Crafts to Art", it is planned to hold annual conferences within the framework of the cycle: — ceramics and glass; — textiles and other fabrics; — metalwork; — arts and crafts: traditions and innovations 2018 meeting topic is " CERAMICS: TECHNOLOGY, DECOR, STYLE " The following questions will be under discussion: — technology and technique of manufacturing and ornamentation of pottery; — interaction of technology, decor and form in ceramic products; — figurative and abstract shapes in pottery. A common theme for all conferences: — synthesis of technology and forms in various kinds of arts and crafts We invite practitioners, theoreticians, teachers, graduate students and undergraduates to participate in the conference. Proceedings of the conference will be issued in electronic and printed form.

The objective of this study is to evaluate, in vitro, the thickness of immediate dentin sealing (IDS) materials on full crown preparations and its effect on the fracture load of a reinforced all-ceramic crown. SIXTY PREMOLARS RECEIVED FULL CROWN PREPARATION AND WERE DIVIDED INTO THE FOLLOWING GROUPS ACCORDING TO THE IDS TECHNIQUE: G1-control; G2-Clearfil SE Bond; and G3-Clearfil SE Bond and Protect Liner F. After the impressions were taken, the preparations were temporized with acrylic resin crowns. IPS empress 2 restorations were fabricated and later cemented on the preparations with Panavia F. 10 specimens from each group were submitted to fracture load testing. The other 10 specimens were sectioned buccolingually before the thicknesses of Panavia F, Clearfil SE Bond and Protect Liner F were measured in 10 different positions using a microscope. According to analysis of variance and Tukey's test, the fracture load of Group 3 (1300 N) was significantly higher than that of Group...

a b s t r a c t Objectives: Midterm-evaluation of a 5-year prospective clinical splitmouth-investigation on survival rate and long-term behavior of all-ceramic partial coverage restorations (PCRs) on molars. Pressed ceramic and CAD/CAM fabricated PCRs were compared. Methods: 80 vital molars of 25 patients were restored with all-ceramic PCRs (40 IPS ). All PCRs were adhesively luted with a light-polymerizing composite (Syntac*/Tetric*) (*Ivoclar Vivadent, Schaan, Liechtenstein). Clinical reevaluations were performed at baseline and 13, 25, and 36 months after insertion of the PCRs according to the modified United States Public Health Services (USPHS) criteria. Absolute failures were demonstrated by Kaplan-Meier survival rate. Results: After an observation time up to 3 years, survival rate of IP-PCRs was 100% and 97% for PC-PCRs due to one severe fracture. The PC-PCR had to be replaced after 9 months. Secondary caries and endodontic complications did not occur. Increased clinical service time resulted in significant decrease of marginal adaptation ( p = 0.031) and enhanced marginal discoloration ( p < 0.0001). Both PCR ceramic materials demonstrated significant deteriorations in color match ( p < 0.0001) and surface roughness ( p < 0.0001), IP-PCRs were significantly more affected ( p 0.005). Regarding anatomic form IP-PCRs performed significantly better ( p = 0.0012). Conclusion: Pressed ceramic and CAD/CAM fabricated partial coverage restorations exhibited a reliable treatment option to restore larger defects in posterior teeth. Marginal degradation of the resin cement and deterioration of the all-ceramic materials during clinical function determine the clinical long-term performance of partial coverage restorations.

In this Hertzian fracture study 5mm thick soda-lime glass plates were impacted by 5 mm steel projectiles with velocities of ~30 to ~91 m/s at angles between 45º and 60º --0/360º being vertical. Results were recorded photographically for comparison. Varied and diverse results were obtained beyond standard Hertzian fracture nomenclature, i.e., the crater, mirror, mist, hackle and Wallner line norm. Characteristics were logged and if necessary denotative titles were assigned. Multiple unnamed physicalities were discerned and are listed in fifteen main physical categories. ©James Byous, A.T. Dowd Research, AAtR Publishing 2013, all rights reserved. Selections may be used for educational and noncommercial research purposes Figure 1 A crushed Hertzian cone displays multiple aspects not covered by current facetal features; crater, mirror, mist, hackle and Wallner lines.

Bir höyük yerleşimi olan Domuztepe Narlı Ovası’nda ve Kahramanmaraş kent merkezinin 40 kilometre güneyinde yer almaktadır. Yerleşim 1993 yılında bir Amerikan-İngiliz heyetinin Kahramanmaraş ilinde gerçekleştirdiği yüzey araştırması esnasında keşfedilmiştir. Domuztepe’de arkeolojik kazılar 1996 yılında California Üniversitesi’nden Elizabeth Carter başkanlığında başlatılmıştır. Manchester Üniversitesi’nden Stuart Campbell 2008 yılında kazı başkanlığını devralmış ve 2012 yılına kadar sürdürmüştür. Campbell kendi isteğiyle kazıları bu satırların yazarına devretmiştir. 2013 yılından itibaren Domuztepe kazıları Ankara Hacettepe Üniversitesi’ne mensup bir Türk heyeti tarafından yürütülmektedir. Bu çalışmada 2014 yılı kazı çalışmalarının ilk sonuçları sunulmaktadır.
Anahtar Sözcükler: Domuztepe, Halaf, Ubaid, Mezopotamya, Neolitik
PRELIMINARY RESULTS OF THE 2014 EXCAVATIONS AT DOMUZTEPE
Abstract
Domuztepe is a mound settlement in Narlı plain, and situated 40 kilometers to the south of Kahramanmaraş city center. The settlement has been discovered during a surface survey conducted in Kahramanmaraş in 1993 by an American-British team. Archaeological excavations have commenced at Domuztepe in 1996 under the direction of Elisabeth Carter from the University of California. In 2008, Stuart Campbell of Manchester University had assumed the directorship of the fieldwork, and had continued the duty until 2012. Campbell voluntarily transferred his duty to the author of this article, and since 2013, the Domuztepe excavations are continued by a Turkish team from Ankara Hacettepe University. This study shows the first results about the 2014 excavations at Domuztepe by new team.