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Methods of preparing no bake granola product

The invention generally provides novel no-bake grain products and methods of preparation of the same. Specifically a no-bake food product with a toasted appearance and flavor and a method of providing a toasted appearance and flavor to a no-bake food product. The no-bake food product includes granola bars, clusters, cereal, instant hot cereal and snacks.




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6'-sialyllactose salts and process for their synthesis and for the synthesis of other alpha-sialyloligosaccharides

The present invention relates to a process of synthesis of α-sialyl oligosaccharides and in particular of 6'-sialyllactose and its salts comprising a step of coupling by Koenigs-Knorr reaction under conditions that allow its use on an industrial scale.




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Maize variety hybrid X80B470

A novel maize variety designated X80B470 and seed, plants and plant parts thereof, produced by crossing Pioneer Hi-Bred International, Inc. proprietary inbred maize varieties. Methods for producing a maize plant that comprises crossing hybrid maize variety X80B470 with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into X80B470 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. This invention relates to the maize variety X80B470, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety X80B470. This invention further relates to methods for producing maize varieties derived from maize variety X80B470.




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Saccharification enzyme composition and method of saccharification thereof

The present disclosure relates to a Bacillus subtilis alpha-amylase (AmyE) or its variants thereof. AmyE or its variants thereof may be used to more efficiently produce fermentable sugars from starch. Also disclosed are a composition comprising a glucoamylase and AmyE or variant thereof and a method of processing starch utilizing the described enzyme composition.




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Laser-welded joint structure between insulation frame and bearing cup of fan and method of forming same

A laser-welded joint structure between insulation frame and bearing cup of fan includes a base having a bearing cup and a stator having at least one insulation frame. The insulation frame includes a sleeve portion defining a bore axially extending therethrough. The sleeve portion is provided on an inner wall surface with at least one pressing section that radially projects into the bore to press a lower side against an upper end of the bearing cup and a bearing received therein. A portion of at least one lateral side of each pressing section that is in contact with the upper end of the bearing cup is melted by laser beam to form a laser-welded joint, so that the insulation frame and the bearing cup are integrally connected together at reduced manufacturing cost and have increased structural strength. A method of forming the laser-welded joint structure is also disclosed.




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Variable output pump

A variable output pump includes a fluid input, a control stage pump having an input portion and an output portion, a main stage pump having an input portion and an output portion, and a differential linkage in mechanical communication with the control stage pump and the main stage pump. The input portion of the control stage pump is in fluid communication with the fluid input and the input portion of the main stage pump is in fluid communication with the fluid input and the output portion of the control stage pump.




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Displacement control system for variable displacement compressor

A displacement control system (A) of a variable displacement compressor sets a target for pressure in an intake chamber or a crank chamber, on the basis of a detected evaporator-outlet air temperature and a target for evaporator-outlet air temperature. The pressure of a refrigerant in a high-pressure section is detected, and a regulating current is supplied to a solenoid (316) of a displacement control valve, on the basis of the pressure of the refrigerant in the high-pressure section and the target for pressure.




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Bearing spacer and housing

An exemplary center housing rotating assembly includes a turbine wheel (260); a compressor wheel (240); a center housing (210) that includes a through bore (215), extending from a compressor end to a turbine end along a bore axis, and a recess (217), adjacent the bore, in a plane orthogonal to the bore axis; a bearing assembly (230) positioned in the bore that includes a keyway (233); and an anti-rotation component (280) seated in the recess and at least partially in the keyway to restrict rotation of the bearing assembly in the bore. Various other exemplary devices, systems, methods, etc., are also disclosed.




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Component cover having variable light transmissivity

In a broad aspect, embodiments described herein are generally directed to an electronic device comprising: a housing; a component mounted within the housing; a component cover in fixed relation to the housing; wherein the component cover is configurable between at least a first state and a second state; and wherein light transmissivity through the component cover is greater when in the second state than when in the first state. In some implementations, in the first state the component cover is substantially opaque, or in the second state the component cover is substantially transparent.




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Robotic marionettes on magnetically-supported and highly mobile puppeteer platforms

An apparatus for suspending and positioning marionettes. The apparatus includes a thin, planar support membrane such as a plastic sheet. A tender vehicle is positioned on the upper side of the support membrane. A motor or other drive mechanism selectively positions the tender vehicle relative to the support membrane. The apparatus includes a puppeteer vehicle from which a marionette is suspended. The puppeteer vehicle is positioned proximate to the lower side of the support membrane opposite the tender vehicle. To support the puppeteer vehicle, one or both of the vehicles includes one or more rotatable magnetic elements such that the attractive forces support the weight of the puppeteer vehicle and the marionette. Typically, the puppeteer vehicle is a passive follower, and the drive mechanism of the tender vehicle includes motors to move the magnetic elements and position the tender and following puppeteer vehicle with its marionette to provide a show.




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Simplified modularized contact type of conductive building block

A simplified modularized contact type of conductive building block includes: a brick, at least one pair of conductive pieces, a circuit board and a base. The brick includes at least one pair of studs projected from a top thereof. The conductive piece has an insertion electrode and a connection electrode respectively disposed at two ends thereof and a contact electrode disposed between the insertion electrode and the connection electrode. The conductive pieces are inserted through the insertion through holes of the circuit board. The circuit board includes a positive electrode circuit and a negative electrode circuit respectively contacted with the at least one pair of the conductive pieces. The conductive pieces are further inserted through the through holes of the base. The circuit board and the base are fixed in the brick.




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Game calling device having varied pitch and intensity

A game calling device including a mouthpiece having inlet and outlet portions and holes between the inlet and outlet portions, whereby sounds having varied pitch and intensity can be generated. The game calling device also includes an inner tubular member that at least partially houses a reed and configured to be selectively positioned on the axial direction of the reed so that the emitted sound can be varied based at least on the position of the inner tubular member along the reed and thereby allowing the game calling device to be used hands-free.




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Offshore cargo rack for use in transferring loads between a marine vessel and an offshore platform

A cargo rack for transferring loads between a marine vessel and an offshore marine platform provides a frame having a front, a rear, and upper and lower end portions. The lower end of the frame has a perimeter beam base, a raised floor and a pair of open-ended parallel fork tine tubes that communicate with the perimeter beam at the front and rear of the frame. The frame includes a plurality of fixed side walls extending upwardly from the perimeter beam. A plurality of gates are movably mounted on the frame, each gate being movable between open and closed positions, the gates enabling a forklift to place loads on the floor. The frame has vertically extending positioning beams that segment the floor into a plurality of load-holding positions. Each load holding position has positioning beams that laterally hold a load module in position on the floor.




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Variability and aging sensor for integrated circuits

A ring-oscillator-based on-chip sensor (OCS) includes a substrate having a semiconductor surface upon which the OCS is formed. The OCS includes an odd number of digital logic stages formed in and on the semiconductor surface including a first stage and a last stage each including at least one NOR gate including a first gate stack and/or a NAND gate including a second gate stack. A feedback connection is from an output of the last stage to an input of the first stage. At least one discharge path including at least a first p-channel metal-oxide semiconductor (PMOS) device is coupled between the first gate stack and a ground pad, and/or at least one charge path including at least a first n-channel metal-oxide semiconductor (NMOS) device is coupled between the second gate stack a power supply pad.




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Methods and systems for global knowledge sharing to provide corrective maintenance

Described herein are methods and systems for providing corrective maintenance using global knowledge sharing. A method to provide corrective maintenance with a CM system includes performing a query to generate a ranking of fixable causes based on factors (e.g., symptoms, configuration, test). The ranking may be determined based on a fixable cause percent match with the factors. The ranking of fixable causes may be associated with one or more solutions for each fixable cause. The ranking can be updated based on performing tests or solutions.




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Process for preparing a semiconductor structure for mounting

A process for preparing a semiconductor structure for mounting to a carrier is disclosed. The process involves causing a support material to substantially fill a void defined by surfaces formed in the semiconductor structure and causing the support material to solidify sufficiently to support the semiconductor structure when mounted to the carrier.




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Protective film of polarizer, polarizer and method for producing it, and liquid crystal display device

A protective film to a polarizer including a cellulose acylate and satisfying the following requirement (1) or (2): (1): The surface of the film has a pH of from 3.0 to 4.5.(2): The surface of the film has a pH of more than 4.5 and at most 6.0, and the film has a moisture permeability of at least 2800 g/m2·day.




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Multi-twist retarders for broadband polarization transformation and related fabrication methods

An optical element includes at least two stacked birefringent layers having respective local optical axes that are rotated by respective twist angles over respective thicknesses of the at least two layers, and are aligned along respective interfaces between the at least two layers. The respective twist angles and/or the respective thicknesses are different. The at least two stacked birefringent layers may be liquid crystal polymer optical retarder layers. Related devices and fabrication methods are also discussed.




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Materials and methods for preparing protein-polymer conjugates

The invention is directed to a single-step method for rapidly and efficiently preparing protein-polymer conjugates, including an insulin-polymer conjugate. According to the method of the present invention, a protein and hydrophilic polymer are contacted in the presence of at least one organic solvent and at least one metal chelator, under conditions that promote the formation of a conjugate of the protein and polymer. Thus, the invention is directed to the site-specific modification of selected proteins, such as insulin, with poly(ethylene glycol) at residue PheB1. The invention also provides a pharmaceutical formulation for encapsulating the conjugate in a biodegradable polymer.




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Monoclonal thyroid stimulating or blocking antibodies, peptide sequences corresponding to their variable regions, and their uses in diagnostic, preventive and therapeutic medicine

Monoclonal antibodies (mAbs) having thyroid stimulating activity (TSAb), especially full or considerably agonistic activity, or thyroid blocking activity (TBAb), which are obtainable by genetic immunization of mice, or fragments (F(ab')2, Fab or Fv) or humanized forms of such monoclonal antibodies or single chain forms (SCA; scFv) of such fragments, which antibodies, or their fragments, compete with bovine TSH for epitopes of the human TSHr, compete with autoantibodies from sera from Graves' patients as well as with autoantibodies from sera from patients harboring blocking autoantibodies for epitopes of the human TSHr, bind to conformational epitopes of the human TSHr located in the first 281 amino acids of the human TSHr, and usually also bind to TSFR receptors (TSHr) from different animals. Various uses of such antibodies, or of peptides corresponding to variable regions of such antibodies, are also described and claimed.




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Soybean variety XB32T13

A novel soybean variety, designated XB32T13 is provided. Also provided are the seeds of soybean variety XB32T13, cells from soybean variety XB32T13, plants of soybean XB32T13, and plant parts of soybean variety XB32T13. Methods provided include producing a soybean plant by crossing soybean variety XB32T13 with another soybean plant, methods for introgressing a transgenic trait, a mutant trait, and/or a native trait into soybean variety XB32T13, methods for producing other soybean varieties or plant parts derived from soybean variety XB32T13, and methods of characterizing soybean variety XB32T13. Soybean seed, cells, plants, germplasm, breeding lines, varieties, and plant parts produced by these methods and/or derived from soybean variety XB32T13 are further provided.




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Soybean variety XB52J13

A novel soybean variety, designated XB52J13 is provided. Also provided are the seeds of soybean variety XB52J13, cells from soybean variety XB52J13, plants of soybean XB52J13, and plant parts of soybean variety XB52J13. Methods provided include producing a soybean plant by crossing soybean variety XB52J13 with another soybean plant, methods for introgressing a transgenic trait, a mutant trait, and/or a native trait into soybean variety XB52J13, methods for producing other soybean varieties or plant parts derived from soybean variety XB52J13, and methods of characterizing soybean variety XB52J13. Soybean seed, cells, plants, germplasm, breeding lines, varieties, and plant parts produced by these methods and/or derived from soybean variety XB52J13 are further provided.




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Soybean variety XB47X13

A novel soybean variety, designated XB47X13 is provided. Also provided are the seeds of soybean variety XB47X13, cells from soybean variety XB47X13, plants of soybean XB47X13, and plant parts of soybean variety XB47X13. Methods provided include producing a soybean plant by crossing soybean variety XB47X13 with another soybean plant, methods for introgressing a transgenic trait, a mutant trait, and/or a native trait into soybean variety XB47X13, methods for producing other soybean varieties or plant parts derived from soybean variety XB47X13, and methods of characterizing soybean variety XB47X13. Soybean seed, cells, plants, germplasm, breeding lines, varieties, and plant parts produced by these methods and/or derived from soybean variety XB47X13 are further provided.




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Variety corn line FX6815

The present invention provides an inbred corn line designated FX6815, methods for producing a corn plant by crossing plants of the inbred line FX6815 with plants of another corn plant. The invention further encompasses all parts of inbred corn line FX6815, including culturable cells. Additionally provided herein are methods for introducing transgenes into inbred corn line FX6815, and plants produced according to these methods.




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Variety corn line FF7354

The present invention provides an inbred corn line designated FF7354, methods for producing a corn plant by crossing plants of the inbred line FF7354 with plants of another corn plant. The invention further encompasses all parts of inbred corn line FF7354, including culturable cells. Additionally provided herein are methods for introducing transgenes into inbred corn line FF7354, and plants produced according to these methods.




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Resonance circuit with variable diodes

A resistance having a high impedance is connected between anode terminals of two variable capacitance diodes sharing a cathode, and the components described above are sealed in one package. The resistance can be formed of a diffusion region between p-regions of the variable capacitance diodes or can be formed of polysilicon and disposed on a chip. Thus, the resistance can be mounted while a chip size of the variable capacitance diode is maintained. Accordingly, it is not required that a bias resistance having a high impedance is additionally provided, whereby achieving reduction in the substrate mounting area and reduction in costs of the set.




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Variable tuning circuit using variable capacitance diode and television tuner

The invention provides a variable tuning circuit capable of extending a variable range in a high frequency band, ensuring the value of L of an inductor to increase the value of Q of a circuit in a low frequency band, and preventing a reduction in gain, an increase in noise, and unstable oscillation. A variable tuning circuit includes: a first parallel resonance circuit that includes a varactor diode, a capacitor connected in series to the varactor diode, and a first inductor connected in parallel to the varactor diode and the capacitor; and a second parallel resonance circuit that includes a second inductor connected in parallel to the varactor diode with a direct current cut-off capacitor interposed therebetween. When the varactor diode has a maximum capacitance, a resonant frequency of the second parallel resonance circuit is set about a lowest frequency in a variable frequency range.




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Apparatus, system and methods for enabling linearity improvement in voltage controlled variable capacitors

An embodiment of the present invention provides an apparatus, comprising at least one anti-parallel pair VVC network comprised of two parallel VVCs with one biased in the opposite polarity of the other and at least one anti-series VVC network comprised of two VVCs configured in series, one biased in the opposite polarity of the other such that the resulting AC capacitive variations produce a desired capacitance variation.




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Variable frequency tag

An antenna assembly is operative for receiving interrogating radiation at a variable frequency tag and generating a corresponding received signal, and for receiving a signature signal and radiating corresponding response radiation. A logic unit is operative for receiving the received signal and outputting the signature signal in response, the signature signal including a signature code for use in identifying the tag. A voltage controlled oscillator is operative for controlling a rate at which the signature code is output; and a power supply is operative for providing an electrical potential difference for energizing the tag. The voltage controlled oscillator is operable to output the signature code at a rate which is governed by the magnitude of the received signal.




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Mechanically controlled variable capacitors for impedance tuners

An improved grounding technique for mechanically adjustable rotary capacitors uses a directly grounded bronze sliding contact to effectively and continuously ground the rotating comb-like blades of the capacitor. RF measurements of the continuity and repeatability of the capacitance settings prove the suitability of the modified capacitors for using in pre-calibrated multi-capacitor MHz range impedance tuners.




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Sintered bearing for motor-powered fuel injection pumps

There is provided a bearing for motor-powered fuel injection pumps, made from Cu—Ni-based sintered alloy, which is able to be obtained at a low cost, having excellent corrosion and abrasion resistances. The bearing contains 10 to 20% by mass of Ni, 5 to 13% by mass of Sn, 0.1 to 0.8% by mass of P, 1 to 6% by mass of C, and a remainder containing Cu and inevitable impurities, and is formed with a Ni—Sn—Cu—P phase containing at least 30% by mass of Sn in a grain boundary, and has a 8 to 18% porosity. The Ni—Sn—Cu—P phase contains 30 to 49% by mass of Ni, 10 to 30% by mass of Cu, 0.5 to 1.5% by mass of P, and a remainder containing Sn and inevitable impurities.




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Trash spearing tools with retractable spearing pins

A trash spearing tool and method are provided. The tool includes a spearing pin, a trigger assembly, an inner tube, and an outer tube. The trigger assembly is movable between a normal position and an activated position. The outer tube is slidable between a storage position and a use position. The spearing pin is operatively coupled to the trigger assembly in such manner that, when the outer tube is in the use position and the trigger assembly is in the normal position, the spearing pin is normally biased to an extended position in which a portion of the spearing pin extends from the outer tube and, when the outer tube is in the storage position and the trigger assembly is in either the normal position or use position, the spearing pin to in a retracted position in which the spearing pin does not extend from the outer tube.




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Banking machine controlled responsive to data read from data bearing records

A banking system operates responsive to data read from data bearing records. The system includes an automated banking machine comprising a card reader. The card reader includes a movable read head that can read card data along a magnetic stripe of a card that was inserted long-edge first. The card reader includes a card entry gate. The gate is opened for a card that is determined to be properly oriented for data reading. The card reader can encrypt card data, including account data. The card data is usable by the machine to authorize a user to carry out a financial transfer involving the account.




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Banking apparatus controlled responsive to data bearing records

A banking system is controlled responsive to data read from data bearing records. The banking system includes an automated banking machine. The machine is operable to carry out a financial transaction for a person responsive to a determination that the person is an authorized user of the machine based on correspondence between identifying data read by a reader of the machine and data store information. The machine includes a check acceptor that is operative to receive checks from authorized machine users. The check acceptor is operable to continuously move a received check along its transport path while simultaneously rotationally orienting the check into alignment with the transport path. A check determined not to have at least one property of an acceptable check is returned to the machine user. Acceptable checks are processed and stored in the machine.




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Resonant clock distribution network architecture for tracking parameter variations in conventional clock distribution networks

A resonant clock distribution network architecture is proposed that enables a resonant clock network to track the impact of parameter variations on the insertion delay of a conventional clock distribution network, thus limiting clock skew between the two networks and yielding increased performance. Such a network is generally applicable to semiconductor devices with various clock frequencies, and high-performance and low-power clocking requirements such as microprocessors, ASICs, and SOCs.




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Method of attaching polarizing plate

An method of attaching a polarizing plate to a liquid crystal display panel includes inspecting an alignment axis of the liquid crystal display panel using an optical axis inspector; controlling a position of the liquid crystal display panel with respect to a reference alignment axis, according to a result of the inspecting the alignment axis of the liquid crystal display panel; providing the polarizing plate to the liquid crystal display panel at the controlled position thereof; and attaching the polarizing plate to the liquid crystal panel at the controlled position thereof.




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Organic light-emitting device having light-emitting pattern, method and apparatus for preparing the same

Disclosed is a method of producing an organic light emitting device, an organic light emitting device produced by using the method, and an apparatus used in the method. The method includes preparing a first electrode, forming one or more organic material layers on the first electrode, and forming a second electrode on the organic material layers, wherein the method includes changing functions of predetermined pattern regions of one or more layers of the organic material layers or the electrodes.




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Composition for forming electron emission source, electron emission source including the composition, method of preparing the electron emission source, and field emission device including the electron emission source

An electron emission source includes nano-sized acicular materials and a cracked portion formed in at least one portion of the electron emission source. The acicular materials are exposed between inner walls of the cracked portion. A method for preparing the electron emission source, a field emission device including the electron emission source, and a composition for forming the electron emission source are also provided in the present invention.




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Process for preparing hydrocyanic acid by catalytic dehydration of gaseous formamide—direct heating

Process for preparing hydrocyanic acid by catalytic dehydration of gaseous formamide, wherein the dehydration of formamide is coupled with an exothermic reaction by the reactor used in the dehydration comprising two separate fluid paths which are separated by a common reactor wall, with one fluid path being provided for the dehydration of formamide and the second fluid path being provided for the exothermic reaction.




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Method of preparing functionalized graphene

A method of preparing functionalized graphene, comprises treating graphene with an alkali metal in the presence of an electron transfer agent and coordinating solvent, and adding a functionalizing compound. The method further includes quenching unreacted alkali metal by addition of a protic medium, and isolating the functionalized graphene.




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Process for preparing platinum-carbene complexes

Described is a process for preparing platinum-carbene complexes.




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System and methods for variable distribution and access control for purchased event tickets

A system and methods for providing variable distribution and access control for purchased event tickets are described. In one embodiment, a network-based system receives an order for electronic tickets purchased by a buyer, receives one or more recipients other than the buyer for one or more of the electronic tickets, receives delivery options for the recipients from the buyer, receives delivery information for the recipients from the buyer, and delivers electronic ticket information to the recipients. Other embodiments are described and claimed.




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Polyurethane ballast layer, the method for preparing the same and the use thereof

The present invention relates to a polyurethane ballast layer, the method for preparing the same and a railway comprising the polyurethane ballast layer. The polyurethane ballast layer provided in this invention comprises a polyurethane-filled ballast layer and a polyurethane external protective layer, wherein the polyurethane-filled ballast layer comprises ballasts and polyurethane foam filled in the space among the ballasts. The polyurethane ballast layer provided in this invention can reduce the probability of ballast crashing, shifting and cracking under heavy load, and separate the ballast track from the outside environment to prevent rain, snow and wastes from entering into the internal space of the ballast track bed. Furthermore, the polyurethane ballast layer can keep the polyurethane foam filled in the ballasts layer away from water in the outside environment to avoid hydrolysis. The polyurethane ballast layer presented in this invention can be used in the railway ballast track bed to extend the track bed maintenance cycle, and save maintenance cost significantly.




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Automated banking machine that operates responsive to data read from data bearing records

Automated banking machines operate to cause financial transfers responsive to data read from data bearing records. Each of the automated banking machines includes a card reader that is operative to read data from user cards corresponding to financial accounts. Transactions are authorized responsive at least in part to correspondence between card data and stored data corresponding to authorized users. Entities responsible for operating the automated banking machines may receive messages that include information or update code items for software or firmware usable in the banking machines for which they have operational responsibility.




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Marine propeller structure

A marine propeller has at least two blades each having a body, a vane and connection members that enable the blades to be fixed together. The blades are formed with a one-piece vane and the bodies are attached to one another and with the bodies form the central hub of the propeller that may be fitted on a ship's shaft after mounting.




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Variable pitch oarlock

An improved variable pitch oarlock of a rowing shell, including a gate for securing an oar, which is adapted to swivel about a vertical pin of a rigger of the rowing shell. The improvement residing in the inclusion of horizontal pivot means adapted to vary the horizontal angular displacement of the gate as it swivels about the vertical pin. In operation, the pitch of the oar blade can be correspondingly varied and accurately determined during all phases of the rowing stroke. The horizontal pin also provides the mounting for force sensors; ensuring horizontal and/or vertical forces can be measured. Also claimed is a method of coaching or training rowing crew(s), utilizing the variable pitch oarlock as herein described, wherein force, angle and depth measurements are taken and analyzed.




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Apparatus for preparing printed matter




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SIDE BEARING FOR RAILROAD CARS

A preloadable side bearing for railroad cars having a mass of hard elastomeric material on a base adapted for attachment to a supporting surface, such as the truck bolster of a railroad car with provision for an initial reduction in the overall height of the bearing in response to preloading forces and to then absorb substantial loading forces with resulting compressive depression of the mass and wherein the mass is formed of a material such as polyurethane.




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Systems, apparatus, and methods for receiving paging messages by creating fat paths in fast fading scenarios

This disclosure provides systems, methods, and apparatus for receiving paging messages in fast fading scenarios. In one aspect, a method of demodulating a paging message during an assigned time slot by a wireless communications apparatus operating in an idle mode is provided. The method includes determining, in anticipation of the assigned time slot, an expected time position corresponding to a path of a pilot signal having a greater signal strength relative to other pilot signals. The method further includes assigning a first demodulation element to demodulate the pilot signal with reference to the expected time position and assigning a second demodulation element to demodulate the pilot signal with reference to a time offset from the expected time position. Other aspects, embodiments, and features are also claimed and described.




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Quarter wave plate polarizer with two phase-shifting portions

A right circular cylindrical body of an isotropic dielectric such as a cross-linked styrene copolymer, has respective pluralities of mutually parallel grooves formed in its axial end faces, spaced apart by an intermediate portion whose dimension c is a half wavelength. The axial lengths a, b of the grooves are such that when a wave passes through the body, a quarter wavelength phase difference is produced between a component of a wave having its E-vector parallel to the grooves and a component of the wave having its E-vector orthogonal to the grooves. Alternatively the plate may consist of two or more discrete bodies whose grooves are dimensioned to produce a total differential phase shift of one quarter wavelength.