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Apparatus incorporating a movable dispensing head provided with a supply of material which solidifies at a predetermined temperature, and a base member, which are moved relative to each other along 'X,' 'Y,' and 'Z' axes in a predetermined pattern to create three-dimensional objects by building up material discharged from the dispensing head onto the base member at a controlled rate.
Get Price2018-1-1 · 1. Introduction. Because of their outstanding properties such as high temperature strength, corrosion resistance, high hardness, extreme values of Young’s modulus, and the widespread electrical properties covering the whole spectra of electrical conducting phenomena, ceramic components take key positions in numerous technical components and systems.
Get PriceUS3364200A - Oxidized cellulose product and method for preparing the same - Google Patents
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Get Price2021-6-1 · With certain AM technologies, one can design and directly manufacture a complex part with excellent dimensional accuracy from various materials such as polymer, ceramic, and metal , , , , . Another advantage to AM is that no specific tooling is required to make the AM part, whereas forging, casting, and even highly complex machining components all require some form of tooling to produce …
Get Price2020-2-28 · Femtosecond laser fabrication has grown to be a major method of extreme manufacturing because of the extreme energy density and spatial and temporal scales of femtosecond lasers. The physical effects and the mechanism of interaction between femtosecond lasers and materials are distinct from those in traditional processes. The nonlinear and nonequilibrium effects of the interaction have …
Get PriceThis invention relates to a curing light device capable of curing dental composites with a means to blow air. The blown air is directed from the curing light onto the tooth that is exposed to the curing light. The blown air has the effect of cooling the surface of the tooth to maintain patient comfort and efficient curing of dental composites.
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Get PriceWhat is claimed is: 1. A method comprising: displaying a three-dimensional (3D) model of a patient's dental arch; displaying a viewing window over at least a portion of the 3D model of the patient's dental arch; receiving, from a user, a change in a relative position between the viewing window and the 3D model of the patient's dental arch; identifying, from both the 3D model of the patient's ...
Get Price2001-5-1 · Recent years have seen a considerable upsurge in publications concerning the surface structure and chemistry of materials with biological or biomedica…
Get Price2019-6-10 · The present disclosure various apparatuses, and systems for 3D printing. The present disclosure provides three-dimensional (3D) printing methods, apparatuses, software and systems for a step and repeat energy irradiation process; controlling material characteristics and/or deformation of the 3D object; reducing deformation in a printed 3D object; and planarizing a material bed.
Get PriceUS5725370A US08/581,203 US58120395A US5725370A US 5725370 A US5725370 A US 5725370A US 58120395 A US58120395 A US 58120395A US 5725370 A US5725370 A …
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Get Price2021-6-1 · Binder jetting technology was initially developed at the Massachusetts Institute of Technology (MIT) and patented in 1993 by Emanuel Sachs, who developed the process using a gypsum-type powder and a glycerin/water binder deposited via thermal bubble inkjet printheads .The technology was commercialized by the company Z Corporation (Z Corp.), which added full-color capability to its …
Get PricePickard's Manual of Operative Dentistry (9th edition).pdf
Get Price2020-5-15 · Project: MP0163 (B01D) B01D (continued) CPC - 2018.08 B01D 61/26 covered by A61M 1/1656 B01D 61/34 covered by A61M 1/16 2. 5. The group B01D 24/00 was introduced in March 1989.
Get Price2020-5-8 · PCBN inserts for turning cast iron and hardened steel: pcbn is the second hardest material in the world, and cbn related high precision cutting tools are introduced to industry, achieved high productivity and cost reductions. pcbn is the short name of polycrystalline cubic boron nitride, and pcbn inserts are mainly for the hard metal turning to replace the conventional machining way of grinding.
Get PriceUS3364200A US463440A US46344065A US3364200A US 3364200 A US3364200 A US 3364200A US 463440 A US463440 A US 463440A US 46344065 A US46344065 A US 46344065A US 3364200 A US3364200 A US 3364200A Authority US United States Prior art keywords cellulose oxidized oxidized cellulose percent alcohol Prior art date 1960-03-28 Legal status (The legal status is an assumption …
Get PriceWear and tear of the dental enamel due to tribomechanical factors such as two-body abrasion and three-body abrasion has been emphasized. Dental erosion due to chemical effect and the effect of oral environments has also been considered. In addition to these, overview of wear modes and wear locations has also been covered.
Get Price2016-10-19 · Root canal treatment for the infected pulp of a tooth aims to eradicate pathological microbiota and prevent future infection within the root canals. Root canal treatment should obtain proper root canal shape, so an efficient cleaning can be performed before three‐dimensional …
Get Price2019-6-10 · The present disclosure various apparatuses, and systems for 3D printing. The present disclosure provides three-dimensional (3D) printing methods, apparatuses, software and systems for a step and repeat energy irradiation process; controlling material characteristics and/or deformation of the 3D object; reducing deformation in a printed 3D object; and planarizing a material bed.
Get PriceThe alternating arrays of Ag NPs groups and Ni NPs groups in the three-dimensional matrix of PDMS function as micro capacitors and prevent current percolation. Compared with PDMS alone, the alternating arrays exhibit a dielectric constant ( k ) that is increased by 1146% and can reach 35.13, with dielectric loss as low as 0.009.
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Get Price2020-4-28 · solid corner cbn inserts have good heat absorption capacity, superior solderability and resistance to soldering heat, but solid corner thoroughly brazed cbn inserts have better impact resisrance, mainly for interrupted and heavy interrupted machining. each solid corner equals to two cutting edges when comparing with the tipped cbn inserts.
Get PriceThe Sci-Hub project supports Open Access movement in science. Research should be published in open access, i.e. be free to read. The Open Access is a new and advanced form of scientific communication, which is going to replace outdated subscription models.
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Get PriceA 7-year-old patient fractured the right central incisor three hours ago. A clinical examination reveals a 2-mm exposure of a 'bleeding pulp.' The treatment-of-choice is: A. pulpectomy and apexification. B. pulpotomy with calcium hydroxide. C. direct pulp cap with calcium hydroxide. D. …
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Get PriceS&TR Past Issues. Back to top. The following is a list of all the Science and Technology Review, and Energy and Technology Review articles online (March 1994–present) with article/pdf links. To find an article quickly, use your “Find” tool and type in a key word or part of the title.
Get Price2013-5-28 · In this work was evaluated the efficiency of an antishrinkage additive in a dental resin. This additive was a mixture 1:1 of five and six-membered ring spiroorthocarbonates functionalized with allylic groups (SOC DA). The aim of this study was to reduce the shrinkage of a typical dental resin composed of a blend of the dimethacrylates, Glycerolate bisphenol A dimethacrylate (Bis-GMA)/2-[(3,5,5 ...
Get Price2020-4-28 · solid corner cbn inserts have good heat absorption capacity, superior solderability and resistance to soldering heat, but solid corner thoroughly brazed cbn inserts have better impact resisrance, mainly for interrupted and heavy interrupted machining. each solid corner equals to two cutting edges when comparing with the tipped cbn inserts.
Get PriceThe sintering and electrical properties of A-site-deficient perovskites, namely, (Sr 0.7 La 0.3) 0.85 TiO 3 with TiO 2 and (Sr 0.7 La 0.3) 0.88 TiO 3 with a single perovskite phase, were investigated in air using powders synthesized by solid-state mixing. (Sr 0.7 La 0.3) 0.85 TiO 3 showed much higher sintering characteristics than (Sr 0.7 La 0.3) 0.88 TiO 3.The relative density of (Sr 0.7 La 0 ...
Get PriceThere are more than 50 families of dendrimers, and some of which, such as polyamidoamine PAMAM, are well studied, and some are just starting to attract the attention of researchers. One promising type of dendrimers is sulfonimide-based dendrimers (SBDs). To date, SBDs are used in organic synthesis as starting reagents for the convergent synthesis of higher generations dendrimers, in materials ...
Get PriceThe Sci-Hub project supports Open Access movement in science. Research should be published in open access, i.e. be free to read. The Open Access is a new and advanced form of scientific communication, which is going to replace outdated subscription models.
Get Price2021-7-1 · Heroes and Villains - A little light reading. Here you will find a brief history of technology. Initially inspired by the development of batteries, it covers technology in general and includes some interesting little known, or long forgotten, facts as well as a few myths about the development of technology, the science behind it, the context in which it occurred and the deeds of the many ...
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Get PriceWear and tear of the dental enamel due to tribomechanical factors such as two-body abrasion and three-body abrasion has been emphasized. Dental erosion due to chemical effect and the effect of oral environments has also been considered. In addition to these, overview of wear modes and wear locations has also been covered.
Get Price2009-1-1 · Food oral processing is an essential procedure not only for the consumption and digestion of foods but also for the appreciation and pleasure of food texture and food flavour. The consumption of a food inside mouth involves various oral operations, including first bite, chewing and mastication, transportation, bolus formation, swallowing, etc ...
Get Price2021-6-1 · Binder jetting technology was initially developed at the Massachusetts Institute of Technology (MIT) and patented in 1993 by Emanuel Sachs, who developed the process using a gypsum-type powder and a glycerin/water binder deposited via thermal bubble inkjet printheads .The technology was commercialized by the company Z Corporation (Z Corp.), which added full-color capability to its …
Get Price2021-7-7 · Numerous funders support our wide research agenda, including: The Wellcome Trust. US National Institutes of Health. Bill & Melinda Gates Foundation. European and Developing Countries Clinical Trials Partnerships & Horizon 20:20. Aeras Global TB Vaccine Foundation. National Research Foundation, South Africa.
Get PriceAn automated method for three-dimensional (3D) image reconstruction and visualization has been proposed (Bertrand, 1994; Bertrand & Corcuff, 1994). It includes a Fourier-filtering based algorithm for removing stripped pattern effect caused by the Nipkow disk and image restoration algorithms: nonlinear enhancement and illumination correction by ...
Get PriceThis led to wood composites with excellent thermal and mechanical properties, in addition to dimensional stability. More importantly, the wood composite displayed a high optical transmittance in a broad wavelength range (350–800 nm), magnetic responsiveness, and brightly colored photoluminescence under UV excitation at 254 nm.
Get Price2015-5-20 · Objective: Recently, 4-dimensional computed tomography (4D-CT) was introduced for the acquisition of dynamic 3-dimensional (3D) images of a moving wrist joint. The aim of this study was to establish its reliability and evaluate the effect of gender and handedness on the in vivo kinematics of the scaphoid, lunate and capitate.
Get PriceThe Sci-Hub project supports Open Access movement in science. Research should be published in open access, i.e. be free to read. The Open Access is a new and advanced form of scientific communication, which is going to replace outdated subscription models.
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