Abstract: A crane includes an under carriage, an upper carriage, a rotary connection, by means of which the upper carriage is connected with the under carriage to rotate around an axis of rotation, a jib to be connected with the crane and erected around a jib axis, and a device connecting the upper carriage with the under carriage with at least one force-transmitting element. The at least one force-transmitting element is designed passively in such a way that it transmits forces between the upper carriage and the under carriage when a pre-determined load condition of the rotary connection is reached.

Abstract: A materials handling vehicle including a mast assembly supported on a power unit. The mast assembly includes plural telescoping sections defined by pairs of laterally spaced rails. An operator compartment is supported on the mast assembly for vertical movement, and a dash is located forward of the operator compartment and includes a substantially horizontal support surface for packages. At least one control device is associated with the dash for operation by an operator standing on the operator compartment. A transparent window defines a portion of the horizontal support surface and provides the operator with a view of a floor surface when the operator compartment is in an elevated position such that the operator does not need to move his head outside the perimeter of the vehicle when looking down. When the mast assembly is in a collapsed position the mast assembly is no higher than the horizontal support surface.

Abstract: A lift truck includes a carriage assembly that is situated on a lift mechanism of the lift truck and which includes a first support, a second support, and one or more linear motion bearings, along with a weighing apparatus. The first support is situated between the masts of the lift truck, and the linear motion bearings and weighing apparatus are likewise situated between the masts of the lift truck. The second support is the frontal plate of the lift truck which is situated directly adjacent the masts and to which the forks of the lift truck are mounted.

Abstract: A lifting mast of an industrial truck includes two vertical rails at a distance from each other that are connected with one another by two cross members, wherein the lifting mast, to raise and lower a lifting carriage on the vertical rails, is provided with a lifting cylinder device which is supported on the bottom cross member, wherein the lifting cylinder device is in an operational connection with a lifting arrangement that is fastened with a first end to the lifting carriage, is fastened with a second end to the lifting mast, and is reversed on the lifting cylinder device. The second end of the lifting arrangement is fastened to the bottom cross member, or the lifting arrangement is fastened with the second end to the additional cross member, wherein at least one traction device that transmits a tractive force connects the additional cross member with the bottom cross member.

Abstract: A lifting mast of an industrial truck includes a load handling arrangement that can be raised and lowered and two vertical rails at a lateral distance from one another that are connected to one another by at least one cross member. The cross member is X-shaped and includes a central area located between the vertical rails and braces that extend in an X-shape from the central area to the vertical rails and are fastened to the vertical rails. Between the central area and two pairs of braces that extend to one of the two vertical rails there are respective see-through openings that extend to one of the two vertical rails.

Abstract: A lifting device of an industrial truck includes a load handling arrangement that is raised and lowered on a lifting frame and a hydraulic lift cylinder device that is actuated by an electrically actuatable control valve device, in which an electronic control device is provided to actuate the control valve device. The electronic control device has an automated set-down mode actuated during a lowering of the load handling arrangement. The load is lowered at a lowering speed specified by a deflection of a control element to the designated surface. As the control element continues to be deflected into the lowering position, the lowering of the load handling arrangement is terminated by the electronic control device by actuating the control valve device into a shut-off position to prevent the load handling arrangement from being set down on the designated surface.

Abstract: An extractor device for use with a removable compressed fluid container having a containing section, sliding section, positioning section, and a hollow needle. A method of extracting a cork from a bottleneck utilizing a compressed fluid injected from a removable container, housed within a containing section of the device, to the bottle through a hollow needle affixed to the containing section of the device. The cork extractor device can include a rotationally projected component to forcibly displace a removed cork from the needle.

Abstract: The present disclosure is directed to a machine for filling at least one container with a pourable product. The machine includes a conveyor; at least one filling unit configured to engage the at least one container; and a weighing device coupled to the at least one filling unit and configured to provide weighing information related to a weight of the at least one container during a filling operation. The weighing device includes a support unit having a supporting arm configured to hold the at least one container and configured to be elastically deformed as a function of the weight of the at least one container being filled; and a sensing unit configured to provide a contactless sensing, wherein the sensing unit is configured to detect a distance from the supporting arm to a portion of the machine facing the supporting arm, the weight of the container being a function of the distance.

Abstract: A method and apparatus cleans plurality of beverage dispensers which sit in respective holsters. Cleaning solution conduits are oriented to spray cleaning solution towards respective tops of holsters. One or more fluid valves or pumps alternatively permit and block said cleaning solution to flow to said cleaning solution conduits, respectively. A power supply flow signals to the fluid valve or pump, respectively, wherein the valve or pump transitions between permitting and blocking flow responsive to transitioning of the flow signals, respectively. A transmitter signals the power supply to transition the flow signals to cause the fluid valve or pump to permit the cleaning solution to flow to the cleaning solution conduits.

Abstract: A method and apparatus for sanitizing a dispenser (20) is provided in which a sanitizing cup (10) is coupled to the dispenser after removing a nozzle (22). The sanitizing cup (10) is filled with a sanitizer, and flushed through a check valve (14). Flushing may be accomplished by dispensing water from the dispenser (20) while the sanitizing cup (10) is coupled to the dispenser (20).

Abstract: A water spout sanitary cover is provided. The cover is disposable and is configured to fit over a portion of the water spout to provide a sanitary layer. The cover may prevent microbial transfer between the spout, water, and a vessel being filled with water. The cover is disposable, and replaceable, and may be provided in a stacked dispenser.

Abstract: Some embodiments disclosed herein provide flow path inserts that can redirect flow paths in syringes with axially aligned tips to an outer edge of the syringe. When connected in line with other components, air can become trapped in the system. The syringes can be positioned generally horizontally and air bubbles can be disposed within the body of the syringe. The air bubbles rise to the top or uppermost portion of the syringe. The flow path inserts can facilitate the transfer of the air bubbles disposed within the syringe out the flow path defined by the flow path insert. Some embodiments disclosed herein provide a spinning luer connector for connecting components of a fluidics system.

Abstract: A bulk liquid dispensing system includes a plurality of dispensing devices for each dispensing a respective type of bulk liquid. Each device includes a primary tank of bulk liquid communicating with a nozzle for dispensing into a reusable container which may be provided by a customer. A secondary portable tank is interchangeably connected above the primary tank to ensure continued dispensing of liquid even as the secondary tank is interchanged. A payment system associates a debit amount with a dispensed fluid from each device resulting from a user selection and a cumulative total of the debit amounts is collected from the customer in a single transaction. The devices can be operated to dispense liquid in response to input of an identification code which is generated when the user prepays, for example through a web interface, a mobile application, a point of sale tool, or a tablet application.

Abstract: A filling adapter for a container to be filled with media, in particular for the filling of containers on assembly lines for the production of motor vehicles where the filling adapter is equipped with a hose pack, electrical, pneumatic, and hydraulic lines. The filling adapter has a barrel and a ball piece and is operatively connected to two media lines in a hose pack, wherein the media are redistributed in the adapter head, in which a filling valve and a vacuum valve are arranged, which are each connected to the barrel, and wherein an aeration line branches off from a vacuum line in the hose pack by means of a check valve and is connected to the ball piece.

Abstract: A cover attaching device for attaching a cover to a seat body is disclosed. This device comprises a cover holder which includes one or more clip holding means capable of holding at least one clip, the cover holder being configured to hold the cover, to which the clip has been attached, via the clip being held by the clip holding means; and a distance adjusting means capable of adjusting a distance between the cover holder and a table on which the seat body can be placed.

Abstract: The present disclosure provides a substrate structure for a micro electro mechanical system (MEMS) device. The substrate structure includes a cap and a micro electro mechanical system (MEMS) substrate. The cap has a cavity, and the MEMS substrate is disposed on the cap. The MEMS substrate has a plurality of through holes exposing the cavity, and an aspect ratio of the through hole is greater than 30.

Abstract: A heating apparatus for a MEMS sensor, comprising a metallic supply lead element for electric current; a metallic return lead element for electric current; and a defined number of metallic heating elements configured between the supply lead element and the return lead element, a substantially constant electrical current density being configurable in the supply lead element, in the return lead element, and in the heating elements.

Abstract: An embodiment of a microelectromechanical systems (MEMS) device is provided, which includes a substrate; a proof mass positioned in space above a surface of the substrate, wherein the proof mass is configured to pivot on a rotational axis parallel to the substrate; an anchor structure that includes two or more separated anchors mounted to the surface of the substrate, wherein the anchor structure is aligned with the rotational axis; and an isolation sub-frame structure that surrounds the anchor structure and is flexibly connected to each of the two or more separated anchors of the anchor structure, where the proof mass is flexibly connected to the isolation sub-frame structure.

Abstract: A micro assembly having a substrate and an operating plane coupled to the substrate. The operating plane is movable from an in-plane position to an out-of-plane position. One or more electric connections provide electric power from the substrate to the operating plane in the out-of-plane position. A tool is coupled to the operating plane. The tool is operable to receive electric power from the operating plane to perform work.

Abstract: A semiconductor structure includes a substrate including a plurality of vias passing through the substrate and filled with a conductive or semiconductive material, and an oxide layer surrounding the conductive or semiconductive material, the substrate defining a cavity therein; a membrane disposed over the substrate and the cavity; a heater disposed within the membrane and electrically connected with the substrate; and a sensing electrode disposed over the membrane and the heater.

Abstract: A semiconductor structure includes: a first device; a second device contacted with the first device, wherein a chamber is formed between the first device and the second device; a first hole disposed in the second device and defined between a first end with a first circumference and a second end with a second circumference; a second hole disposed in the second device and aligned to the first hole; and a sealing object for sealing the second hole. The first end links with the chamber, and the first circumference is different from the second circumference, the second hole is defined between the second end and a third end with a third circumference, and the second circumference and the third circumference are smaller than the first circumference.

Abstract: A system for driving a MEMS array having a number of MEMS structures, each defining at least one row terminal and one column terminal, envisages: a number of row driving stages, each for supplying row-biasing signals to the row terminal of each MEMS structure associated to a respective row; a number of column driving stages, each for supplying column-biasing signals to the column terminal of each MEMS structure associated to a respective column; and a control unit, for supplying row-address signals to the row driving stages for generation of the row-biasing signals and for supplying column-address signals to the column driving stages for generation of the column-biasing signals. The control unit further supplies row-deactivation and/or column-deactivation signals to one or more of the row and column driving stages, for causing deactivation of one or more rows and/or columns of the MEMS array.

Abstract: A pressure sensor using the MEMS device comprises an airtight ring surrounding a chamber defined by the first substrate and the second substrate. The airtight ring extends from the upper surface of the second substrate to the interface between the first substrate and the second substrate and further breaks out the interface. The pressure sensor utilizes the airtight ring to retain the airtightness of the chamber.

Abstract: A microelectromechanical systems (MEMS) package includes a substrate extending between a first pair of outer edges to define a length and a second pair of outer edges to define a width. A seal ring assembly is disposed on the substrate and includes at least one seal ring creating a first boundary point adjacent to at least one MEMS device and a second boundary point adjacent at least one of the outer edges. The package further includes a window lid on the seal ring assembly to define a seal gap containing the at least one MEMS device. The seal ring assembly anchors the window lid to the substrate at the second boundary point such that deflection of the window lid into the seal gap is reduced.

Abstract: The present invention relates to a process for the production of high quality synthesis gas rich in hydrogen during the process of upgrading the residual hydrocarbon oil feedstock by rejuvenating the spent upgrading material in Reformer in absence of air/oxygen without supplying external heat source other than the heat generated inside the process during combustion of residual coke deposited on the upgrading material. The present invention further relates to the apparatus used for preparation of syngas wherein said syngas thus produced is used for production of hydrogen gas. Furthermore, the present invention also provides system and method for preparing pure hydrogen from syngas.

Abstract: A method for conversion of greenhouse gases comprises: introducing a flow of a dehumidified gaseous source of carbon dioxide into a reaction vessel; introducing a flow of a dehumidified gaseous source of methane into the reaction vessel; and irradiating catalytic material in the reaction vessel with microwave energy. The irradiated catalytic material is heated and catalyzes an endothermic reaction of carbon dioxide and methane that produces hydrogen and carbon monoxide. At least a portion of heat required to maintain a temperature within the reaction vessel is supplied by the microwave energy. A mixture that includes carbon monoxide and hydrogen can undergo catalyzed reactions producing multiple-carbon reaction products in a lower-temperature portion of the reaction vessel.

Abstract: A method for conversion of greenhouse gases comprises: introducing a flow of a dehumidified gaseous source of carbon dioxide into a reaction vessel; introducing a flow of a dehumidified gaseous source of methane into the reaction vessel; and irradiating catalytic material in the reaction vessel with microwave energy. The irradiated catalytic material is heated and catalyzes an endothermic reaction of carbon dioxide and methane that produces hydrogen and carbon monoxide. At least a portion of heat required to maintain a temperature within the reaction vessel is supplied by the microwave energy. If desired, a mixture that includes carbon monoxide and hydrogen can flow out of the reaction vessel and be introduced into a second reaction vessel to undergo catalyzed reactions producing multiple-carbon reaction products.

Abstract: Provided herein are pharmaceutically acceptable sodium thiosulfate and pharmaceutical compositions thereof. Also provided herein are methods for determining the total non-purgeable organic carbon in a sodium thiosulfate-containing sample. Further provided herein are methods for producing pharmaceutically acceptable sodium thiosulfate. Still further provided herein are methods of treatment comprising the administration of pharmaceutically acceptable sodium thiosulfate.

Abstract: Provided is a porous carbon material which has excellent electrical conductivity, thermal conductivity, pressure resistance, and strength against tension and compression. This porous carbon material at least partially includes a continuous porous structure, and exhibits excellent electrical conductivity, thermal conductivity, pressure resistance, and strength against tension and compression by containing carbon crystal grains therein.

Abstract: The invention concerns a process for the preparation of an amorphous mesoporous and macroporous alumina, comprising at least one step for dissolving an acidic precursor of aluminium, a step for adjusting the pH by adding at least one basic precursor to the suspension obtained in step a), a step for co-precipitation of the suspension obtained at the end of step b) by adding at least one basic precursor and at least one acidic precursor to the suspension, a filtration step, a drying step, a shaping step and a heat treatment step. The invention also concerns an amorphous mesoporous and macroporous alumina with a bimodal pore structure having: a specific surface area SBET of more than 100 m2/g; a median mesopore diameter, by volume determined by mercury intrusion porosimetry, of 18 nm or more; a median macropore diameter, by volume determined by mercury intrusion porosimetry, in the range 100 to 1200 nm, limits included; a mesopore volume, as measured by mercury intrusion porosimetry, of 0.

Abstract: The present invention refers to a process for making a calcium carbonate containing material, wherein the process includes a specific drying procedure and allows for the provision of calcium carbonate materials with reduced moisture pick-up and low porosity.

Abstract: Disclosed is an inline separator for separating well fluid or gas-dominant fluid using centrifugal force. The inline separator includes: an outer pipe provided with an inlet; a vortex-generating rotor installed in the outer pipe; a fixed extraction pipe having an external diameter smaller than an internal diameter of the outer pipe and installed in the outer pipe at a downstream side of the vortex-generating rotor; a movable extraction pipe connected to an end of the fixed extraction pipe, close to the vortex-generating rotor, and having an extendable and retractable structure such that a position of an introduction hole of the movable extraction pipe is changeable; a pressure compensation pipe that applies pressure to oil or gas separated in a downstream end of the fixed extraction pipe; and a seawater discharge pipe connected to a portion of the outer pipe at which the fixed extraction pipe is disposed.

Abstract: Disclosed is a process to remove neutrally buoyant metal particles composed of solid particles and droplets of oil from water such as produced water from petroleum production or refinery wastewater. In one aspect, the water is contacted with oleophilic adsorbent materials which adsorb the neutrally buoyant metal particles. Also disclosed is a process for removing metal particles from a fluid volume that includes crude oil and/or condensate. The fluid volume is washed with a volume of water to form a volume of wastewater, thereby transferring at least a portion of the metal particles from the fluid into the wastewater. The volume of wastewater including the transferred metal particles is then contacted with an oleophilic adsorbent material wherein the neutrally buoyant metal particles are adsorbed by the adsorbent material. The adsorbent material is then separated from the wastewater. Finally, the treated wastewater is used to wash the crude and/or condensate.

Abstract: Method for treating water by filtration on a bed of granular material in order to reduce its content in contaminants, said method comprising the steps for: making said water travel in transit in a reactor containing said bed in a upward flow at a speed that does not permit the fluidization of said bed but permits said material to migrate, as and when the filtration takes place, towards the lower part of said reactor, continuously removing a fouled granular material at the foot of the reactor, by means of a piping into which a gas is insufflated, said fouled granular material being constituted by granular material and contaminants adsorbed on said granular material; continuously or intermittently carrying out the physical cleansing of said fouled granular material thus removed, so as to obtain a cleansed granular material essentially rid of said contaminants; reinjecting the granular material thus cleansed into an upper part of said bed; characterized in that the granular material is an adsorbent granular mate

Abstract: Materials, apparatuses, and methods that are suitable for separating immiscible liquids and make use of a porous host material functionalized with a functionalizing agent such that the host material is superhydrophobic.

Abstract: An ultraviolet disinfection device for a wastewater treatment system includes a tank having a tank inlet and a tank outlet, a treatment housing within the interior chamber and forming a treatment chamber, an ultraviolet light emitting device within the treatment chamber and emitting radiation having a disinfecting effect on bacteria, and a sample well disposed within the interior chamber and forming a well chamber. The tank forms an interior chamber so that effluent discharged from the wastewater treatment system and enters a tank inlet and flows into the interior chamber. Effluent within the interior chamber enters the treatment chamber through a housing inlet and flows past the ultraviolet light emitting device within the treatment chamber to a housing outlet.

Abstract: A potable water producing system for disposition at a salt water body and methods of producing potable water are provided. The system includes a wave energy conversion system (AWECS) and a portable filtration system. The AWECS forms a floating articulated barge having an onboard desalination system including reverse osmosis membranes. The filtration system is a sand filter residing on a damping plate submerged in the salt water body and filters the adjacent salt water for providing filtered salt water to the onboard desalination system. Wave action on the articulated barge provides energy to pump and pressurize the filtered salt water from the sand filter to the reverse osmosis membranes to produce potable water. The wave action on the articulated barge effects shaking of the reverse osmosis membranes, thereby rendering them self-cleaning. The potable water can be used for various applications, e.g., bottling, replenishing aquifers, ground and/or aquifer remediation, irrigation, etc.

Abstract: The present invention is directed to methods of treating a hydrocarbon-containing waste stream to form a hydrocarbon-containing retentate and an aqueous permeate which is substantially free of hydrocarbon. The method includes passing the hydrocarbon-containing waste stream through a microporous membrane to yield the hydrocarbon-containing retentate and the aqueous permeate. The membrane comprises a substantially hydrophobic, polymeric matrix and substantially hydrophilic, finely divided, particulate filler distributed throughout the matrix. The polymeric matrix has pores with a volume average diameter less than 1.0 micron, and at least 50 percent of the pores have a mean diameter of less than 0.35 micron.

Abstract: A device prepares drinking water by electrolysis, belonging to the technical field of equipment for electrolysis of water. The device includes a water container, at least one pair of a cathode and an anode arranged within the water container, and an electrolysis power source used for supplying electricity to the cathode and the anode; a water-permeable membrane is arranged between the coupled cathode and anode, and the water-permeable membrane covers the anode, the range of the distance ? between the water-permeable membrane and the cathode being 0???10 mm. The device, when electrolyzing water, can prepare water which has a low oxidation reduction potential, is rich in hydrogen and has a certain sterilization capability and is suitable for drinking.

Abstract: A method to prepare a coated current collector electrode of a flow through capacitor. The method includes preparing a coating paste includes: 10-50 weight % of carbon having a specific surface area of at least 500 m2/g; 0.3-5 weight % of a binder; 10-50 weight % based on the total paste of a first solvent having a first boiling point; and 10-50 weight % based on the total paste of a second solvent having a second boiling point. The method further includes applying the coating paste on a current collector; and allowing the second solvent in the coating paste applied on the current collector to evaporate at a temperature lower than the first boiling point.

Abstract: A system containing a reactor vessel including zero valent iron media, a source of a conditioning additive, a source of a reaction additive, and a process control subsystem is disclosed. A method for reducing a concentration of one or more contaminants in contaminated water including contacting zero valent iron media with a conditioning additive, contacting contaminated water with conditioned zero valent iron media, and introducing a reaction additive is also disclosed. The conditioning additive and reaction additive may each contain an aluminum salt.

Abstract: An ozone purification system for wastewater comprising an ozone diffusion reactor installable in or in fluid communication with wastewater collection tanks of septic or other wastewater systems. The reactor includes a pump that circulates wastewater through a gas-liquid mixing device, a contact volume, and a static mixer. The contact volume comprises an elongate length of contact piping and the static mixing chamber is configured to impart turbulence into the flow of the circulated wastewater and ozone gas.

Abstract: A method of operating a waste water treatment facility to prevent bulking in which growth of floc forming bacteria is promoted within a selector aeration tank by controlling absorption and bio-oxidation of biodegradable soluble chemical oxygen demand by the bacteria. Absorption is controlled through measurement of a percentage removal of biodegradable soluble chemical oxygen demand and bio-oxidation is controlled through measurement of temperature corrected specific oxygen uptake rate. Both the absorption and bio-oxidation levels are controlled by decreasing the degree to which wastewater influent flow bypasses the selector aeration tank in favor of the main aeration tank when either of absorption or bio-oxidation are below targeted ranges and increasing flow rate of recycle activated sludge from the clarifier to the main aeration tank while decreasing recycle activated sludge flow rate to the selector aeration tank when absorption and bio-oxidation are above such targeted ranges.

Abstract: A reverse osmosis water purifier that monitors Total Dissolved Solids (TDS) at the onset of entering the water filtration system and downstream upon exiting the system. A comparison of the TDS levels is made to each other or predetermined levels, and action is taken regarding whether to bypass the RO filter, or continue filtering through the RO membrane, or combine the two fluid streams. A microbiological barrier filter is introduced in-line with the egress port of a reverse osmosis filter, and downstream of the bypass water circuit. The microbiological filter is utilized to remove microbiological contaminants from the output water, either directly from the RO filter output, or the bypass filter circuit, or both.

Abstract: Fluid desalination systems that include an FO reactor and an electrodeionization reactor with improved membranes and solvents, and a method of using such systems, are provided. A fluid having a first salt concentration is directed to the FO reactor, which uses a solute to draw salt away from the fluid across a membrane into the solute, where the electrodeionization reactor is salinized solute fluid and (i) generate substantially desalinated fluid and (ii) regenerate the solute for return to the forward osmosis reactor. The electrodeionization reactor is configured to draw positive and negative ions of the solute across cationic and anionic membranes, respectively, by applying a voltage across electrodes sandwiching the cationic and anionic membranes. In some cases, the cationic and anionic membranes are porous gelled polymer electrolyte membranes, wherein a saturated solution of the salinized solute fluid is absorbed.

Abstract: In order to treat a flow of waste water, there is applied to this flow, after at most an optional pre-treatment of screening/degritting or deoiling, a filtration treatment by means of microfiltration or ultrafiltration membranes, by causing the flow to circulate tangentially to the membranes at a velocity of at least 0.1 m/s, in the presence of an organic sequestering agent composed based on organic phosphate at a concentration that is effective for sequestering metal ions contained in the flow and minimizing the formation of calcium carbonate, with a differential pressure on either side of the membranes that is less than or equal to 5 bar.

Abstract: This disclosure relates to a method and an apparatus for sealing a double-walled glass tube in a vacuum-tight manner, in particular a production method for manufacturing of solar collectors. By means of a vacuum chamber, inside of which a holding element is fixed and inside of which a heating conductor is arranged, an electro-conductively heating and a subsequent deforming of the double-walled glass tube can be achieved. No additional materials, such as metallic auxiliary element, solders are required. A simple installation inside the vacuum chamber is possible and a minimum vacuum feedthrough for the power supply of a heating conductor is required. The direct heat transfer onto the double walled glass tube and a resulting quick process control allows to reliably seal a double-walled glass tube of a thermal solar collector under vacuum with simple means.

Abstract: Methods, compositions, and articles provide for LAS-type glass-ceramics having specific thermo-mechanical, optical and coloration characteristics to yield generally brown-grey products. The glass-ceramic materials may include as colorants iron oxide, vanadium oxide, chromium oxide, cobalt oxide, nickel oxide and/or cerium oxide.

Abstract: A method for forming an optical fiber preform and fibers drawn from the preform. The method includes forming a soot cladding monolith, inserting a consolidated core cane into the internal cavity, and processing the resulting core-cladding assembly to form a preform. Processing may include exposing the core-cladding assembly to a drying agent and/or dopant precursor, and sintering the core-cladding assembly in the presence of a reducing agent to densify the soot cladding monolith onto the core cane to form a preform. The preform features low hydroxyl content and low sensitivity to hydrogen. Fibers drawn from the preform exhibit low attenuation losses from absorption by the broad band centered near 1380 nm.

Abstract: An optical glass having a small partial dispersion ratio (?g,F), while having a refractive index (nd) and Abbe number (?d) within desired ranges, is obtained. The optical glass, in mol %, comprises 20.0 to 65.0% of an SiO2 component, 1.0 to 25.0% of an Nb2O5 component, and 1.0 to 35.0% of an Na2O component, and has a refractive index (nd) of 1.62 to 1.75, an Abbe number (?d) of 30 to 42, and a partial dispersion ratio (?g,F) of no greater than 0.594.