Abstract: A wavelength-tunable distributed feedback (DFB) laser is disclosed where the lasing wavelength can be adjusted by adjusting the bias current of the laser diode. Since the output power of the laser diode also changes with the bias current, a one-to-one correspondence between the lasing wavelength and the output power of the laser can be established. Consequently, the lasing wavelength can be measured directly from the photocurrent of a power monitoring detector facing the back-end of the laser diode. This provides an extremely simple method for wavelength monitoring.

Abstract: The present invention is related to a series of derivatives of novel ether diamine compounds prepared by the cyanobutylation reaction of an alcohol having 3 to 22 carbon atoms with 2-pentenenitrile to form a branched alkyl ether nitrile. The etheraminonitriles formed by the process are hydrogenated to form alkylether amines. The resulting product can be reacted with 2-pentenenitrile and or acrylonitrile and in a subsequent step, hydrogenated to yield a diamine. Specifically, the present invention deals with two types of tertiary amines one made by the reaction of novel ether diamines compounds with ethylene oxide, propylene oxide or butylene oxide or mixtures thereof, producing alkoxylated tertiary amines and the other made by the reaction of novel ether amine compounds with formaldehyde and hydrogen producing methylated tertiary amines. The invention also disclosed novel amine oxides, and quaternary compounds made from said tertiary amines.

Abstract: Process for the preparation of expanded polyvinylarene particles in which polyvinylarene particles pre-expanded to an apparent density do ranging between 600 and 200 kg/m3 are impregnated by an inorganic gas, and the impregnated particles thus obtained are expanded to an apparent density of at least three times lower than do.

Abstract: A forming tool has a die with a seat for receiving material to be formed, an upper punch axially movable into and out of the seat from one side of the die, a lower punch axially movable into and out of the seat from the opposite side of the die, a movable loading device for introducing the material into the seat, an impact press for subjecting the upper punch to a series of compacting impacts, a unit for supplying drive force to the tool and a control device for controlling the motion of the movable parts of the tool. An impact head is positioned above the die, supports the upper punch, and receives the compacting impacts delivered by the impact press. The impact head is guided and aligned with a cavity in the die by a vertically adjustable roof. The impact head is thereby mechanically disengaged from the roof.

Abstract: A scooter has a plurality of wheels, a steerer, a platform, and a steerer support. The steerer support connects the steerer to the platform. The steerer support can rotate with respect to the platform, allowing the scooter to be folded when not in use. The steerer support can nest within the platform, further allowing the scooter to collapse into a compact position. The steering axis, front wheel diameter, and fork geometry are arranged to provide stable steering. Specifically, the steering axis and the front wheel axis of rotation are both located aft of the centerline of the steerer. Further, the contact point between the front wheel and the ground and the axis about which the front wheel rotates are located aft of the steering axis about which the steerer rotates. The trail, measured between the steering axis and the front wheel contact point, is kept relatively small, between 0 and 75 mm. Also disclosed is a collapsing steerer, a parallel-rail support structure, and a compact braking element.

Abstract: New group 4 organometallic complexes are characterized by having a phosphinimine ligand and two or more cyclopentadienyl ligands. Certain of these complexes exhibit unusual behavior when examined by nuclear magnetic resonance (NMR) techniques. Well defined crystals of the inventive complexes have been isolated and analyzed by x-ray crystallography. The complexes have also been found to be polymerization catalysts which are surprisingly more active than their simple metallocene analogs.

Abstract: Heat resistant stainless steel may be treated in a low oxidizing atmosphere in a heat/soak-heat/soak sequence to deplete its surface of Ni and Cr which tend to catalyze coking of hydrocarbons in contact with the surface of the stainless steel, and enrich it with elements which are inert to coke formation. Parts made of stainless steel, such as furnace tubes or coils, treated in accordance with the present invention when used have a significantly reduced rate of catalytic coking.

Abstract: The melt of polyvinyl aromatic polymers comprising from 10 to 45 weight % of star branched polymer prepared using a combination of thermal and tetra functional peroxide initiation has an improved melt strength permitting better foam formation for extrusion foam blown with conventional blowing agents and inert gases including CO2 and an improved tensile strength for oriented polystyrene (OPS) articles, e.g. blown film or extruded sheet.

Abstract: A shelf subassembly is provided for adjustably supporting a flat panel. The shelf subassembly is itself supportable in an adjustable CRT support subassembly, which is supported in a monitor support assembly. The shelf subassembly includes a panel support portion for supporting the flat panel display, and a securing device connected to the panel support portion for operably and removably connecting the shelf subassembly to the CRT support subassembly.

Abstract: An optical design for delivering or receiving light from a fluid being measured is disclosed. The optical design is capable of immersion in the fluid being measured, and is capable of operating with fluids that have a different index of refraction. The optical design includes a solid prism of optical material to which a fiber optic attaches by a suitable adhesive. In an optical delivery system, light from the fiber enters the prism and reflects off an internal mirror to a second internal reflective surface. The second internal reflective surface focuses the light to a fixed point through an exit surface of the prism. The second internal reflective surface may in the shape of an ellipse, or may comprise a diffractive surface. The exit surface has a spherical concave shape that is centered on the fixed point where the light is focused, so that light passes through the exit surface at substantially ninety degrees.

Abstract: A wavelength-tunable distributed feedback (DFB) laser is disclosed where the lasing wavelength can be adjusted by adjusting the bias current of the laser diode. Since the output power of the laser diode also changes with the bias current, a one-to-one correspondence between the lasing wavelength and the output power of the laser can be established. Consequently, the lasing wavelength can be measured directly from the photocurrent of a power monitoring detector facing the back-end of the laser diode. This provides an extremely simple method for wavelength monitoring.

Abstract: The present invention is related to a series of derivatives of novel ether diamine compounds prepared by the cynobutylation reaction of an alcohol having 3 to 22 carbon atoms with 2-pentenenitrile to form a branched alkyl ether nitrile. The etheraminonitriles formed by the process are hydrogenated to form alkylether amines. The resulting product can be reacted with 2-pentenenitrile and or acrylonitrile and in subsequent step, hydrogenated to yield a diamine. Specifically, the present invention deals with two types of tertiary amines one made by the reaction of novel ether diamines compounds with ethylene oxide, propylene oxide or butylene oxide or mixtures thereof, producing alkoxylated tertiary amines and the other made by the reaction of novel ether amine compounds with formaldehyde and hydrogen producing methylated tertiary amines. The invention also disclosed novel amine oxides, and quaternary compounds made from said tertiary amines.

Abstract: The present invention relates to an integrated apparatus for monitoring wafers and for process control in the semiconductor manufacturing process, by means of optical measurements at more than one spectral range that can be installed inside any part of the semiconductor production line, i.e., inside the photocluster equipment, the CVD equipment or the CMP equipment. The apparatus comprises a measuring unit (110) for performing optical measurements in predetermined sites on said wafer, illumination sources for illuminating said wafer via measuring unit (10,50), supporting means (30) for holding, rotating and translating the wafer and a control unit (120). The measuring unit (110) comprises: (a) at least two separate optical units, each operating at a different distinct spectral range; (b) a separate optical window for each optical unit (31, 32); (c) at least one movable optical head (34); (d) mechanical means for translating said optical head relatively to the wafer's surface.

Abstract: An ion implantation apparatus includes an ion source for generating ions, an extraction electrode for extracting the ions from the ion source by the action of an extraction electric field, and a mass analysis magnet for deflecting or bending the trajectory of an ion beam extracted by the extraction electrode. The ions that have passed through the mass analysis magnet are implanted into a target. The ion implantation apparatus further includes a multi-axis driving mechanism for moving the ion source. The multi-axis driving mechanism changes the relative positional relationship between the ion source and the extraction electrode.

Abstract: A method and a system are presented for automatic optical control of at least one working parameter of a processing tool to be applied to a working area of a workpiece for providing certain process results. The at least one working parameter of the processing tool affects at least one parameter of the workpiece under processing. The processing tool has a preset value of the at least one working parameter prior to the processing of the workpiece. A measuring tool is applied to the workpiece prior to its processing by the processing tool for measuring the at least one parameter of the workpiece and generating measured data representative thereof. The measured data is analyzed with respect to the preset value of the working parameter and to the process results, so as to determine whether the preset value should be corrected for providing the certain process results when applying the processing tool to said workpiece. Upon detecting that the preset value should be corrected, calculating a correction value.

Abstract: The melt of polyvinyl aromatic polymers comprising from 10 to 45 weight % of star branched polymer prepared using a combination of thermal and tetra functional peroxide initiation has an improved melt strength permitting better foam formation for extrusion foam blown with conventional blowing agents and inert gases including CO2.

Abstract: A structure that provides for enhanced access to a chamber defined therein. The structure includes a top member and a support assembly for supporting the top member and together defining the chamber. The invention includes a panel removably connected to the structure and a securing device for removably securing the panel to the structure. The securing device is hidden from view when the panel is connected to the structure. Removing the panel provides for access to the chamber.

Abstract: A catalyst system comprises an organometallic complex of a group 4 metal having a ketimide ligand. The organometallic complex preferably also contains a cyclic ligand which forms a delocalized pi-bond with the metal (such as a cyclopentadienyltype ligand). Preferred organometallic complexes may be activated with a so-called “substantially non coordinating anion” to form a low cost cocatalyst system which is excellent for the preparation of olefin copolymers having both high molecular weight and very low density.

Abstract: A measurement method and system are presented for measuring parameters of a patterned structure. Scatterometry and SEM measurements are applied to the structure, measured data indicative of, respectively, the structure parameters and lateral pattern dimensions of the structure are generated. The entire measured data are analyzed so as to enable using measurement results of either one of the scatterometry and SEM measurements for optimizing the other measurement results.

Abstract: A new and distinct hybrid of Pulmonaria plant characterized by a unique combination of long, slender foliage and cobalt-blue flowers.