Abstract: A water-pipe bowl and roller device are disclosed in this invention where the device includes four principal components: a charcoal holder, a roller ball, a water-pipe bowl shell, and an insulated outer sleeve for the water-pipe bowl shell. The roller ball can contain tobacco where the roller ball is orientable to regulate the burn-life of the tobacco by exposing different portions of the bowl to the charcoal. The device allows for a longer smoking session and allows for interchanging between at least two different flavors without re-filling the hookah bowl.

Abstract: Preparation of halogen-doped silica is described. The preparation includes doping silica with high halogen concentration, sintering halogen-doped silica to a closed-pore state, and subjecting the closed-pore silica body to a thermal treatment process and/or a pressure treatment process. The temperature of thermal treatment is sufficiently high to facilitate reaction of unreacted doping precursor trapped in voids or interstices of the glass structure, but is below temperatures conducive to foaming. Core canes or fibers drawn from halogen-doped silica subjected to the thermal treatment and/or pressure treatment show improved optical quality and possess fewer defects. The thermal treatment and/or pressure treatment is particularly advantageous when used for silica doped with high concentrations of halogen.

Abstract: The embodiments disclose a method including creating a dual product vaporizer for use in vaping two different types of products at the same time, atomizing the two different types of products using two heaters for allowance of different burn temperatures for each of the two different types of products, wherein the two heaters are configured to operate at two different temperatures, wherein the two heaters are configured to operate at the same temperature, wherein the dual product vaporizer is configured to operate with only one product cartridge inserted, using at least one rechargeable battery to power the two heaters and an LED light battery indicator, and using two individual draw holes for drawing atomized product vapors from two individual product cartridges at the same time.

Abstract: An optical fiber draw furnace muffle includes a body portion defining a substantially cylindrical cavity extending along a centerline axis of the muffle. A tapered portion has an interior surface which defines a first curved portion with a first radius of curvature and a second curved portion with a second radius of curvature. At least one of the first and second radii of curvature has a radius greater than a radius of the cylindrical cavity.

Abstract: One aspect relates to a process for the preparation of a quartz glass body. The process includes providing a silicon dioxide granulate from a pyrogenically produced silicon dioxide powder, making a glass melt out of silicon dioxide granulate, and making a quartz glass body out of at least part of the glass melt. The size of the quartz glass body is reduced to obtain a quartz glass grain. The quartz glass body is processed to make a preform and an opaque quartz glass body is made from the preform. One aspect further relates to an opaque quartz glass body which is obtainable by this process. One aspect further relates to a reactor and an arrangement, which are each obtainable by further processing of the opaque quartz glass body.

Abstract: A manufacturing method of a glass panel for a glass panel unit includes a melting step, a spreading step, an annealing step, a cutting step, and a spacer disposition step. The spacer disposition step is a step of disposing spacers onto a glass sheet and is performed by a spacer disposition device prior to the cutting step.

Abstract: A method and device for the continuous heat treatment of pharmaceutical glass containers are provided. The method includes continuously conveying glass containers from an entry region to an exit region via a conveying installation having a separating plate made from an electrically conductive material, the separating plate being positioned above and/or below the conveying installation; heating the glass containers to a maximum temperature in a heating zone after passing the entry region; cooling the glass containers in a first cooling zone after passing the heating zone and before passing the exit region at a first cooling rate, wherein the separating plate separates the glass containers from heating installations in the heating zone and/or temperature changing installations in the first cooling zone; and controlling the heating installations and/or the temperature changing installations to inductively heat the separating plate in the heating zone and/or the first cooling zone.

Abstract: The present disclosure provides a method for fabrication of an optical fibre soot preform. The method includes production of silicon dioxide particles along with waste particulates. The silicon dioxide particles are produced using a precursor material in a combustion chamber. In addition, the method includes cooling of the silicon dioxide particles. Further, the method includes agglomeration of the silicon dioxide particles. Furthermore, the method includes separation of the waste particulates from the silicon dioxide particles. Moreover, the method includes dehydration of the silicon dioxide particles. Also, the method includes compaction of the silicon dioxide particles. The compaction of the silicon dioxide particles facilitates fabrication of the optical fibre soot preform.

Abstract: An optical fiber having a core comprising silica and greater than 1.5 wt % chlorine and less than 0.5 wt % F, said core having a refractive index ?1MAX, and an inner cladding region having refractive index ?2MIN surrounding the core, where ?1MAX>?2MIN.

Abstract: An optical fiber production system includes an annealing furnace having a furnace inlet, a furnace outlet, and a process tube extending between the furnace inlet and the furnace outlet, the process tube having a process tube wall and a heating zone including at least one heating element. The optical fiber production system also includes a gas distribution assembly fluidly coupled to the furnace outlet and structurally configured to induce gas flow from the gas distribution assembly into the process tube such that gas flows within the process tube in an upflow direction.

Abstract: Embodiments of the disclosure relate to a method of controlling the flow of fluid, such as air, between a stack of glass sheets during a co-sagging process. In embodiments, this involves a particular method and certain mechanical means of applying force at or near the edges and/or corners of a stack of glass sheets during a co-sagging process. In other embodiments, this involves creating low pressure regions at or near the edges and/or corners during the co-sagging process. In particular, controlling the flow of fluid between glass sheets is particularly suitable for preventing shape mismatch between two glass sheets having different thicknesses and/or compositions.

Abstract: To provide a method of sintering an optical fiber porous glass base material, capable of sufficient dehydration and reducing a transmission loss caused by residual moisture by efficiently transferring heat from the heater to the base material during a process in dehydration/sintering for an optical fiber porous glass base material, a porous glass base material having a heat shield plate installed in a vicinity of a lower end is vertically inserted into a furnace core tube provided with a heater along an outer circumference, and heating using the heater is performed. The heat shield plate has an outer diameter which is 70% or larger than a diameter of the porous glass base material and smaller than an inner diameter of the furnace core tube.

Abstract: A cotton-free ultrasonic atomizer and electronic cigarette, comprising a tobacco tar cup, an air inlet passage, a tobacco tar smoke outlet passage and an atomization component; the atomization component includes a first atomization piece and a second atomization piece; an atomization cavity is formed between the first atomization piece and the second atomization piece, and an ejection end of the first atomization piece aligns to an atomization surface of the second atomization piece; the first atomization piece communicates with a tobacco tar outlet of the tobacco tar cup, the air inlet passage communicates with the atomization cavity, and the atomization cavity communicates with the tobacco tar smoke outlet passage.

Abstract: The aerosol-generating article comprises a housing having an open end. The housing comprises a cavity for holding an aerosol-forming substrate. The article further comprises a piston movable within the housing into the direction of the open end of the housing. The aerosol-generating device comprises a cavity for receiving at least a portion of an aerosol-generating article comprising an aerosol-forming substrate. A heating chamber is arranged adjacent the cavity for heating aerosol-forming substrate received from the aerosol-generating article. The cavity and the heating chamber are arranged along a same longitudinal axis such that aerosol-forming substrate is transferrable from the aerosol-generating article into the heating chamber with a linear movement in the direction of the longitudinal axis.

Abstract: A glass production apparatus producing continuously curved glass for covers and containers includes a crucible, a calender device, a cutting device, a molding device, and a crystallizing device. The crucible melts glass raw material and outputs a glass melt to calender device. The calender device rolls and presses the glass melt to prepare a glass belt with a preset temperature. The cutting device cuts the glass belt with the preset temperature into glass members. The molding device include at least one molding mold and a manipulator. Each of the at least one molding mold curves at least one portion of the glass member with the preset temperature to prepare a curved glass member. The manipulator transfers the curved glass member to the crystallizing device, the crystallizing device crystallizes the curved glass member to prepare a curved crystalline glass member. A method for manufacturing such glass is also provided.

Abstract: This document relates to smokeless products containing one or more non-tobacco plant materials. Certain embodiments described in this document relate to smokeless products containing one or more tobacco-alternative plant materials and having properties similar to tobacco-containing oral products.

Abstract: Methods for manufacturing fluorine-doped glass preforms for optical fibers are disclosed. An exemplary method includes exposing a soot preform to an atmosphere containing a fluorine-containing gas in a first elongated chamber of a first furnace. The first elongated chamber typically has a single isothermal hot zone, which may be maintained at a doping temperature of about 800° C. to 1200° C., to obtain a fluorine-doped soot preform. The exemplary method further includes dehydrating the fluorine-doped soot preform by exposing it to an atmosphere containing a chlorine-containing gas in a second elongated chamber of a second furnace. The second elongated chamber typically has an upper hot zone, which may be maintained at a dehydration temperature of about 1000° C. to 1350° C., and a lower hot zone, which may be maintained at a consolidation temperature of about 1500° C. to 1650° C. Dehydration of the fluorine-doped soot preform typically occurs in the upper hot zone of the second furnace.

Abstract: A process for the manufacture of a heat strengthened glass substrate, includes the application of a temporary layer including a polymer on a glass substrate including a glass sheet, then the application to the glass substrate coated with the temporary layer of a treatment for the heat strengthening of the glass including heating, leading to the removal of the temporary layer, and then cooling by blowing of air through nozzles. The glass substrate thus obtained exhibits a reduced level of iridescences.

Abstract: In a method for producing a biocidal glass surface of a soda-lime glass, a glass surface of a soda-lime glass is indirectly or directly contacted with silver, silver salt, or silver ions and directly or indirectly heated using at least one laser beam of a laser such that an ion exchange of sodium ions from the soda-lime glass with silver ions of the silver ions or from the silver or the silver salt results and silver ions of the silver ions deposit in the region of the glass surface. Before being heated, the glass surface is coated with a transfer support including a layer of silver and a protective layer covering the silver layer, such that the protective layer directly contacts the glass surface, the glass surface then being heated using the laser. Also, a soda-lime glass having a biocidal glass surface is produced by the method.

Abstract: A glass bending apparatus configured to at least partially bend glass in a first direction includes a first mold and guide blocks. The first mold includes guide block insert holes. The guide blocks are respectively inserted into the guide block insert holes. The guide blocks are spaced apart from each other in a second direction intersecting the first direction.