Abstract: A method and an adhesive tape applicator is provided for taping a strip connection of two metal strip ends that have been connected with one another by means of adhesive tape having a predetermined width. The top and the bottom of the strip connection are each covered by an adhesive tape segment. The length of the two adhesive tape segments essentially corresponds to a width of the strip ends and, if the strip width is not the same, to the width of the wider strip end.

Abstract: The invention relates to a method of adhesively bonding articles, in which an agent for preparation for bonding is applied and, prior to adhesive bonding, conditioning is performed. In this method it is envisaged that conditioning take place with brushing.

Abstract: Disclosed is a composite wood component having upper and lower surface layers and a core layer; a first glueline layer; a second glueline layer; and an overlay layer.

Abstract: To provide: a coated wood composite having surface properties such as transparency, smoothness, gloss, uniformity, and depth, and excellent in various physical properties such as durability and strength; and a method for producing such a coated wood composite efficiently and easily. A coated wood composite produced by placing an unsaturated polyester resin composition on a decorative veneer and heat-pressing the decorative veneer and the composition placed thereon to mold the composite, wherein the unsaturated polyester resin composition comprises: an unsaturated polyester; a polymerizable monomer; and an isocyanate component essentially including an aliphatic diisocyanate.

Abstract: A method for fabricating one or more devices, e.g., integrated circuits. The method includes providing a multi-layered substrate, which has a thickness of material (e.g., single crystal silicon) overlying a first debondable surface coupled to and overlying a second debondable surface. The second debondable surface is overlying an interface region of the multi-layered substrate. In a preferred embodiment, the thickness of material having a surface region. The method includes processing the surface region of the multi-layered substrate using one or more processes to form at least one device onto a portion of the surface region. The method includes forming a planarized upper surface region overlying the surface region of the thickness of material. The method includes joining the planarized upper surface region to a face of a handle substrate.

Abstract: The present invention relates to a plasma etching apparatus, which comprises a chamber, a substrate support disposed inside the chamber to support a substrate, a shield disposed with a gap on the substrate such that plasma is not generated therein while allowing an edge portion of the substrate to be exposed, an antenna disposed at a position on an outer wall of the chamber to apply plasma-generating power to an area between the edge portion of the substrate and an inner wall of the chamber, and a bias-applying unit for applying bias to the substrate support. According to the present invention, the shield and the substrate support prevent plasma from being generated at other portions of a substrate except an edge portion of the substrate. Inductively coupled plasma is employed to generate plasma with high density, thereby removing a thin film and particles remained at the edge portion of the substrate.

Abstract: In accordance with the foregoing objects and advantages, the present invention provides a fabrication device that may be used during the grinding operation of the fabrication process. The fabrication device comprises a socket plate that includes a plurality of cavities formed therein that correspond in position and number to the solder (or other conductive material) bumps formed on the front surface of a product wafer.

Abstract: A substrate processing system is provided. A housing defines a processing chamber. A plasma-generating system is operatively coupled to the processing chamber. A substrate support member is disposed within the processing chamber and configured to hold a substrate during substrate processing. A ceramic insert is disposed over the substrate support member such that the ceramic insert is disposed between the substrate support member and the substrate during substrate processing. A gas-delivery system is configured to introduce gases into the processing chamber. A controller controls the plasma-generating system and the gas-delivery system.

Abstract: Disclosed is an attachment or thermal bond tape guide to be used in conjunction with a portable automatic hot air welder. The apparatus consists of a mechanical appliance for the purpose of introducing thermal bond tape between the lap joint of various fabrics. These fabrics will not weld without introducing a bonding agent like thermal bond adhesive tape. An example of such fabric would be acrylic. The mechanism has a circular tube for holding tape and a series of slots and guides so the tape feeds the welded joint, traveling with the machine as it progresses along the lap joint. Thus, enabling the portable automatic hot-air welder to join acrylic or canvas fabrics.

Abstract: A magnetic adhesive tape holder includes an upper housing and a lower housing movably received in the upper housing. Two first resilient members are provided between the upper and lower housings to give the lower housing a tendency to move away from the upper housing. A clamping member is formed on the upper housing and extends into the second housing. The clamping member is in an open status when the upper housing is not pressed towards the lower housing, and in a closed status when the upper housing is pressed towards the lower housing. A first gear and a second gear are rotatably mounted on the second rear wall and engaged with each other. A cutting member is mounted on the second rear wall and beneath the first gear. A roll of magnetic adhesive tape provided in the holder can be automatically and easily cut off with a determined length.

Abstract: The present invention is a retractable screen (22) and frame (24) assembly (20). The frame (24) includes a first track (32) and a second track (34) in spaced and parallel relationship to the first track (32). The retractable screen (22) includes a canister (36), a screen cloth (38), a control bar (40), a first glide (42), a second glide (44), and a biasing device (46). The biasing device (46) is disposed between a first end (52) of the control bar (40) and the first glide (42). The first glide (42) is inserted into the first track (32) and the second glide (44) is inserted into the second track (34). The glides (42, 44) slide along the respective tracks (32, 34) while the biasing device (46) biases the first end (52) of the control bar (40) with respect to the first track (32). The biasing provided by the biasing device (46) prevents the control bar (40) from binding with the tracks (32, 34) as the control bar (40) and the glides (42, 44) are slid along the tracks (32, 34).

Abstract: A hanging device for a Roman shade includes a shade cloth with a cloth tube formed in its upper end, an upper tubular rod and two brackets. The cloth tube has two opposite holes, and the upper tubular rod has two opposite vertical holes corresponding to the location of the two holes of said cloth tube, and the upper tubular rod extends in the cloth tube so vertical bolts of the two brackets may pass through those two holes of the upper tubular rod and the cloth tube and then screwed tightly with a nut for supporting the upper tubular rod together with the cloth shade. Then the two brackets are fixed on a wall available for fixing the Roman shade. Further, a finial can be attached with two ends of the upper tubular rod for decoration. Then the Roman shade is optionally applicable to an inside mounted one, an outside mounted one, or an outside one with finials.

Abstract: A winding device for a blind without pull cords is provided with a reel pivotal base and a cord-guiding base abutting against each other in the upper rail of a blind. A winding reel is axially assembled on the reel pivotal base, having its outer circumference formed with an oblique conical surface gradually shrinking from its first end to its second end to enable a linking cord to move forward automatically when the linking cord is wound on the winding reel. The cord-guiding base is provided with at least one push block at a location where the winding reel is pivotally rotated for guiding the linking cord to be wound side by side closely on the winding reel, preventing the linking cord from overlapping or wound irregularly after the linking cord is wound on the winding reel, enabling a blind to be collapsed or stretched smoothly.

Abstract: An equilibrium device for a blind without pull cords includes at least one movable weight-balancing member installed at a proper location in the interior of the lower rod of a blind. The weight-balancing member is provided for increasing and adjusting the weight of the blind so as to keep the weight of the blind and the elastic force produced by an elastic force mechanism in a force balanced condition after the blind is cut in width and lightened, enabling the blind to be collapsed upward and stretched downward normally.

Abstract: A sliding screen door in which stretching force of a wire is easily adjusted when a screen is in a stretched condition, and expansion of the screen caused by wind or the like can be appropriately suppressed without increasing operation force to be applied to an operating doorframe for the operation to stretch the screen. The sliding screen door is constructed such that wires, whose one ends are fixed to a vertical frame member are drooped in the operating doorframe via a guiding member, which is provided in the operating doorframe, after being inserted into the screen, and a sinker is dangled at tip ends of the wires. A spring member is interposed between the sinker and a contacting portion to be a rising uppermost limit of the sinker, and a wire adjusting mechanism for adjusting a length and the stretching force of the wire is installed in the vertical frame member.

Abstract: A transverse cloth blind includes an upper rail, a plurality of cloth strips, at least one fixing cord, a curtain and a plurality of support rods. The cloth strips are disposed in parallel under the upper rail and respectively formed with two long sides and two short sides. The fixing cords are hung down straight from the upper rail to the rear long sides of the cloth strips and respectively formed with a cord ring under the rear long side of each cloth strip. The curtain is hung down straight from the upper rail and bonded with the front long side of each cloth blade. The support rods parallel to one another are respectively inserted and positioned in the cord rings of the fixing cords for supporting the cloth strip.

Abstract: A vehicle window screen system prevents insects from entering into the vehicle. The system has a housing with a thin opening along its length and two ends along its width. The housing attaches to the vehicle door interior to the glass window of the vehicle door and attaches to the door at the lower window opening. A spool links the ends of the housing. A screen attaches to the spool. The system further has two flexible guides attaching the sides of the screen and a screen cap attaches the upper side of the screen. A plurality of rails attaches the borders of the opening of the vehicle door. The guides of the screen are within the rails. A hook at the upper window door allows at least one loop of the screen cap to be hooked when the screen is up.

Abstract: A pull cord activation passage mechanism for a window blind, which is particularly used for providing a reaction length of a longer curvature in a passage of activating a pull cord for driving curtains of a horizontal blind, and for enabling the pull cord to enter into related sliding members in a nearly perpendicular direction, in order to enable an arresting member to be close to a first pull cord seat, comprises primarily a bending pulley located between a first and a second seats for providing a turning back of the first pull cord. An open ring is located on the seat, for providing sliding members to adjust corresponding to a pulling angle of the pull cord, thereby avoiding impedance in a slant direction, and enabling a smooth operation to the pull cord.

Abstract: A folding sliding wall has a wall frame with at least one bottom rail and at least one ceiling rail. Carriages are arranged in the bottom and ceiling rails. An individual element or several of the individual elements that are pivotably connected to one another by hinges are provided, wherein the individual element or the several individual elements are arranged in the wall frame so as to be laterally movable within the wall frame. Each individual element has an element frame and a panel arranged in the element frame. A fitting is connected to the element frame and coupled by a bolt to one of the carriages. The fitting is attached to an end face of the element frame.

Abstract: A hanging structure for sunshade device, comprising a hanging unit, an edge strip set, at least an elastic element, and at least a pin-joint element is disclosed. The hanging unit has a hanging member formed at its head and a tail piece formed at its end; the edge strip set has at least one slot; the elastic element is disposed between the edge strip set and the hanging unit; and the pin-joint element adjoins the hanging unit to the slot of edge strip set that allows the hanging unit to swing in the slot. When the sunshade device is folded, the hanging unit forms a first intersection angle with the horizontal line; when the sunshade device is unfolded, the hanging unit forms a second intersection angle with the horizontal line.

Abstract: An organic agent for enhancing opacity in paper, paperboard or pulp comprises a hydrolase or an oxido-reductase; this enzymatic opacifying agent overcomes drawbacks associated with traditional organic and inorganic opacifying agents but also serves to provide increased strength and reduced porosity in paper and paperboard.

Abstract: A high-speed apparatus for applying material to cigarette paper during manufacture uses at least two independently operable, moving orifice devices, each positioned to deposit horizontal bands of material on a paper web at the dry end of a Fourdrinier wire. The resulting web may be cut into multiple webs, each web having a width corresponding to the effective width of a moving orifice device. Dynamic optical inspection apparatus evaluates add-on band uniformity, thickness, and/or spacing and adjusts operation of the apparatus accordingly. The apparatus can simultaneously produce both banded and unbanded paper for wrapping tobacco during cigarette manufacturing.

Abstract: This invention relates to a machine for the production of a tissue paper web with a forming section in which the tissue paper web is formed from a pulp suspension on a skin and with a nip which is formed between the cylindrical surface of a drying cylinder, in particular a Yankee drying cylinder, and a mating surface and through which the tissue paper web can be conveyed together with the skin. The configuration of the machine is variable such that, depending on the quality of the tissue paper to be produced, for example its absorbency or tear resistance, the skin is either a three-dimensionally structured skin, a structured mesh, a non-structured skin, or a felt, whereby the mating surface is formed by the cylindrical surface of a press roller which includes a suction zone and in which provision is made for bores communicating with the suction zone.

Abstract: A press belt (2) comprises many drain grooves (13) extending along a belt travel direction, and many lands (14) positioned between the adjacent drain grooves and extending along the belt travel direction. The land (14) has an upper surface which is entirely curved upward as a transverse sectional configuration along a belt width direction.

Abstract: A tumbling unit such as a casting shake-out unit, rotary media drum, sand reclaimer or the like includes a cylindrical outer shell and a cylindrical inner liner. The inner liner is formed of a series of interfitting segments. The segments each have an inner surface, an outer surface, side edges, a front edge, a back edge, and two vanes extending from the outer surface. The side edges of the segments have a groove and the grooves of neighboring segments define a channel between the segments. A pin in the channel urges the neighboring segments apart to form a tight interfit among the segments in a row of the liner. The pin conforms in shape and size to the cross section of the vanes, and aligns with the vanes of the adjacent segments to form a continuous spiral upon the outside of the liner.

Abstract: A compact heat battery (CHB) may comprise a casing, a tube containment sheath, a bundle of hermetically sealed phase change material (PCM) encapsulation tubes, and encapsulation tube inserts. An insulation envelope and insulation shield may be positioned radially outward from the casing. As an alternative the casing, insulation, and insulation shield can be integrated into a double-walled vacuum cylinder. The cylindrical containment sheath can open and close along a split-seam in response to radial expansion of the tubes. The natural packing of the encapsulation tubes within the containment sheath can distribute a heat transfer fluid through the interstitial spaces between the encapsulation tubes. Floating baffle plates provide for axial containment and expansion of the encapsulation tube bundle. The CHB of the present invention can allow for increased tube density, providing increased heat absorption and decreased CHB dimensions.

Abstract: Provided is a heat-storage unit capable of efficiently storing heat in a heat-storage material and sufficiently taking out the stored heat.

Abstract: A coaxial-flow heat exchanging structure having a proximal end and a distal end for exchanging heat between a source of fluid at a first temperature and the environment (e.g. air, ground, water, slurry etc.) at a second temperature. The coaxial-flow heat transfer structure comprises: a thermally conductive outer tube section, and an inner tube section having an inner flow channel and being coaxially arranged within the outer tube section. An outer flow channel is formed between the inner and outer tube sections, and helically-extending turbulence generator is provided along the outer flow channel, so as to create turbulence along the flow of heat exchanging fluid flowing between the inner and outer flow channels, and thereby increasing the heat transfer through the walls of the outer tube section to the ambient environment.

Abstract: A coaxial-flow heat exchanging structure having a proximal end and a distal end for exchanging heat between a source of fluid at a first temperature and the environment (e.g. air, ground, water, slurry etc.) at a second temperature. The coaxial-flow heat transfer structure comprises: a thermally conductive outer tube section, and an inner tube section having an inner flow channel and being coaxially arranged within the outer tube section. An outer flow channel is formed between the inner and outer tube sections, and helically-extending turbulence generator is provided along the outer flow channel, so as to create turbulence along the flow of heat exchanging fluid flowing between the inner and outer flow channels, and thereby increasing the heat transfer through the walls of the outer tube section to the ambient environment.

Abstract: A heat sink has a base and multiple fins. The fins are attached to the base, and each fin has a radiating surface and a conducting surface. The conducting surface is formed on the radiating surface and has at least one side abutting the base. The base is attached to an integrated circuit to dissipate heat from the integrated circuit. Because at least one of the two sides of the conducting surfaces is in full contact with the base, more heat is conducted from the base to the fins. Therefore the heat sink can cool the integrated circuit effectively.

Abstract: A heat dissipation system includes a housing, a circulator and a cooler. The housing has at least one surface made of heat-conductive metal to contact with a heat source. The housing includes a recess with a passage formed on the bottom to contain cooling liquid and an inlet and an outlet connected to the recess. Two pipes are provided to connected between the inlet and the outlet and the cooler, respectively. The circulator is installed in the recess to circulate the flowing of the cooling liquid. As such, heat generated from the heat source is directly conducted to the housing and takes away by the cooling liquid circulated by the circulator to the cooler.

Abstract: A sheet type fluid circulating apparatus includes: a fluid path having a closed structure provided in an inner space of a stacked flexible sheet; fluid filled in the fluid path; a fluid transport unit provided in at least a part of the fluid path of the flexible sheet to circulate the fluid in the fluid path; and a control ciruit unit for controlling the fluid transport unit. A flexible compact light-weight sheet type fluid circulating apparatus can be provided, and a circuit board or a specimen in a biomedical process can be individually and optimally cooled.

Abstract: A thermal module (10) for dissipating heat from a heat-generating electronic component (20) includes a base plate (11), a heat-dissipating fan (16) mounted to one side of the base plate, at least a heat pipe (12) mounted to another side opposite to the one side of the base plate, and a fin assembly (14) mounted to an air outlet of the heat-dissipating fan. The heat pipe includes a bending portion (124). The fin assembly includes a portion (142) corresponding to the bending portion of the heat pipe. The fins of the portion of the fin assembly are arranged along an extension direction of the bending portion of the heat pipe.

Abstract: A heat dissipation device comprises a heat spreader for contacting an electronic device for absorbing heat therefrom. A plurality of fins is formed on the heat spreader. A first heat sink is separated from the heat spreader and comprises a first base substantially perpendicular to the heat spreader and a plurality of first fins formed on the first base. A second heat sink comprises a second base connecting with the first base and a plurality of second fins formed on the second base. Two heat pipes connect the heat spreader with the first base and the second base via opposite sides of the heat dissipation device. The heat pipes are partly sandwiched between the first base and the second base and transfers heat from the heat spreader to both of the first and the second heat sink.

Abstract: An offset-shaped fin 4 can be continuously processed by roll molding by a method involving a first step of bending a flat sheet-like material 40A into a concavo-convex shape by a pair of first rollers 5, 5? to form a corrugate sheet 40B; a second step of cutting slopes of the concavo-convex ridges of the corrugate sheet by a pair of second rollers; and a third step of bending the offset portion, offset and cut in the second step, by a pair of third rollers. A pitch-changing method of offset-shaped fins involves a step of supplying offset-shaped fins between at least one pair of pitch-changing rollers rotating while meshing with the other so that at least one pair of pitch-changing rollers clamp the offset-shaped fins between them, allow them to pass through said pitch-changing rollers and change their pitch.

Abstract: The invention relates to a soldered heat exchanger network comprising folded flat multichamber tubes and wave-like ribs that are provided with fins. The multichamber tubes encompass at least two chambers, each of which is formed by folded webs that are soldered in the interior of the multichamber tube. According to the invention, the wave-like ribs (13, 14) are provided with fin-free fields (17a, 17b; 18a, 18b) in the area of the web or webs (7, 8).

Abstract: A laminate-type evaporator includes U-channel plates in combination with various configurations of dual cup and single cup plates, to control refrigerant pressure drop and achieve enhanced temperature spreads within the evaporator. The U-channel plates define one or more of the final refrigerant passes in the evaporator, and the dual cup and single cup plates define refrigerant passes upstream therefrom. Fins are disposed between adjacent plate pairs and extend to selected end edges of the U-channel plates to maximize the surface area available for heat exchange in the final refrigerant passes.

Abstract: The invention relates to a heat exchanger, in particular for motor vehicles, for a first gaseous flow medium and a second gaseous flow medium. Said heat exchanger comprises a tube bundle containing a plurality of tubes, a first tube base and a second tube base, a housing, in addition to an inlet connection and an outlet connection for the gaseous medium. The tubes comprise tube ends, which are held and sealed by the tube bases and the housing is connected on one side to the tube bases, forming a cooling chamber for the liquid flow medium and on its end face to the inlet and outlet connections.

Abstract: A hybrid exchanger utilized to heat a working fluid utilizing counter current heat exchange from a heat source fluid. The plates of the hybrid heat exchanger are configured to be welded to provide a more robust design while also allowing optimum heat exchange of the working fluid. In another embodiment, the hybrid heat exchanger includes a plate assembly and shell combination construction. The plate assembly and shell combination provides both optimized counter current heat exchange, while also controlling leakage of fluid from the hybrid heat exchanger. The plates of hybrid heat exchanger have a plurality of fluid bores which facilitate the exchange of fluids including inlet and outlet ports for both the working fluid and the heat source fluid. The bores of the plates include an open mouth having a greater clearance which allows for optimized flow of fluid while also allowing for simplified cleaning and maintenance of the hybrid heat exchanger.

Abstract: A multicycle hydraulic control valve. A control and actuation system for a well tool includes a control valve having one or more metal-to-metal seals which open while differential pressure exists across the seals to thereby selectively connect pressure sources to an actuator to operate the well tool. Both seals may be closed while a connection between the actuator and the pressure sources is switched by the control valve. The control valve may include a member having areas formed thereon acted upon by various pressures to facilitate operation of the control valve.

Abstract: A subsea tubing hanger assembly is disclosed which comprises a tubing hanger (12) having a plurality of conduits (14). A pup joint (16) is connected to the hanger (12) and a shroud (20) surrounds the pup joint (16). A plurality of extension capillary tubings (30) are connected to respective conduits (14) and extend between the shroud (20) and pup joint (16) to a position exterior of the shroud (20). The tubings (30) are provided with a connector (40) at their ends to facilitate connection of the tubings (30) to capillary tubings (50) of a well.

Abstract: A deformable member can be used in a well tool for use in downhole oil/gas wells. In one embodiment, a deformable member is described which is deformable between undeformed and deformed positions, and comprises a generally hollow cylindrical body defining a wall. The wall includes three circumferential lines of weakness in the form of grooves, with two grooves provided in an outer surface of the member wall and the other groove provided in an inner surface. The member is deformed outwardly by folding about the lines of weakness and is used in particular to obtain sealing contact with a tube in which the member is located.

Abstract: A centralizer for a pipe or other elongate member is formed from a plurality of tubular bodies (16) each having a through passage (23) that is connected end-to-end to form a continuous passageway. Each of the tubular bodies (16) has a female connector portion (26) at one end and a male connector portion (24) at the opposite end that fits into the female connector portion (26) with longitudinal and/or angular play. The securing means in the form of a mounting flange (14) is also provided to fix the centralizer with respect to a J-tube through which the centralizer is to pass. The invention centralizes the elongate member in the J-tube and maintains the allowable minimum bending radius, whilst eliminating, or reducing to acceptable levels, the contact loads and abrasion on the elongate member.

Abstract: Methods and apparatus are provided for performing an expedited shoe test using an expandable casing portion as an annular fluid barrier. Further provided are methods and apparatus for successfully recovering from a failed expansion so that a shoe test can be completed without replacement of the expandable casing portion. In one recovery method, a selectively actuatable fluid circulation tool is provided to further expand the expandable portion or perform a cementing operation. Additionally, methods and apparatus are provided to drill a wellbore and form an annular fluid barrier in a single trip.

Abstract: A galvanic resistivity tool with one or more measurement electrodes and guard electrodes, and one or more shielding electrodes. The impedance seen by the measurement electrode (indicative of the formation resistivity) is determined by using a directional coupler that measures a reflection coefficient of an electrical signal.

Abstract: Apparatus and method for a retrievable plug in coil tubing. A plug is disposed within a tubing and is set within the tubing by an anchoring element placed in gripping engagement with the tubing. The plug also has seal elements disposed therein that are placed in sealing engagement with the tubing. An orientation element on the plug positions the plug within the tubing with respect to the seam of the tubing.

Abstract: Compositions and methods are given to prevent, alleviate and remedy water blocks and gas blocks (condensate block or condensate banking). Wettability modifiers are contacted with the formation to change the surfaces from water wet or oil wet to intermediate wet or gas wet. Preferred wettability modifiers include partially or completely fluorinated surfactants or polymers, for example fluorosilanes such as perfluorosilanes, urethane oligomers containing perfluoro alkyl moieties, fluoroacrylates, and fluoroalkyl containing terpolymers or their mixtures. Other examples include surfactants, for example viscoelastic surfactants such as cationic surfactants such as quaternary amines, and zwitterionic surfactants, such as betaines, optionally mixed with co-surfactants.

Abstract: The invention provides a method of forming packs in a plurality of perforations in a casing of a wellbore, the method comprising the steps of: (a) forming a plug of a plugging particulate material in the wellbore of the casing, wherein the plug covers at least one perforation in the casing; (b) forming a pack of a first packing particulate material in at least one perforation located above the plug in the casing; (c) removing at least an upper portion of the plug to expose the at least one perforation in the casing that had been previously covered by at least the upper portion of the plug; and (d) forming a pack of a second packing particulate material in the at least one perforation exposed by removing at least the upper portion of the plug, wherein the second packing particulate material can be the same or different from the first packing particulate material.

Abstract: Methods comprising introducing a relative permeability modifier fluid into at least a portion of a subterranean formation to form a treated portion of the subterranean formation; and introducing a consolidating agent into the treated portion of the subterranean formation so as to transform at least a section of the treated portion of the subterranean formation into a consolidated region. In some embodiments, the subterranean formation may have been previously hydraulically fracture-stimulated.

Abstract: A cementitious composition for cementing an oil or gas well and which exhibits when cured, increased flexural strength and a flexural strength to compressive strength ratio between from about 0.29 to about 0.80, contains a hydraulically-active cementitious material, such as Portland cement, and substantially spherical zeolite. Representative zeolites include natrolite, heulandite, analcime, chabazite, stilbite, and clinoptilolite. The weight percent of zeolite in the cement composition is generally less than or equal to 15 percent. In practice, a well bore may be cemented by pumping the activated slurry and pumping it within the well bore to a pre-selected location and allowing it to solidify.