46results about How to "Shorten fiber length" patented technology

Various methods and systems of making inorganic fiber / flake reinforced composites having a thermoplastic matrix are disclosed. The methods use systems similar to those used to make inorganic fiber / flake reinforced products having a thermoset matrix, but the systems and methods are modified to use thermoplastic precursor monomer(s) followed by in situ polymerization of the monomer(s) during and / or following forming of the desired shape of the products. These methods permit the manufacture of superior inorganic fiber reinforced thermoplastic matrix composites in large and very large shapes heretofore not possible, or practical.

The present invention provides fibril system fibers which may be employed in filter applications and in artificial leather applications, and also provides an industrially superior manufacturing method for such fibril system fibers, and a spinning nozzle. The fibril fibers of the present invention include at least one macromolecular polymer having a film forming ability, and they have a structure in which fibrillated fibers having a diameter of 10 micrometers or less branch from main fibers having a width within a range of 0.1 micrometers-500 micrometers, and a length within a range of 10 micrometers-10 cm.

An interferometer employed, in part, as a Sagnac interferometer or fiber optic gyro (FOG) includes a light source (100) that provides a source light wave that is split into first and second light waves that are directed to traverse a defined optical loop path (508, 500) in opposite directions. The defined optical loop path (508, 500) in accordance with the present invention is provided by multiple waveguides wound into a coil such that the opposite traveling first and second light waves serially travel through all of the waveguides in opposite directions around the optical loop path.

Disclosed is an optical fiber that includes an inner core having a concentration of at least one laser active material, the inner core being adapted to operate in a single mode manner; and an outer core disposed about the inner core having a concentration of at least one laser active material. The outer core being adapted to operate in a multimode manner, a cladding disposed about the outer core; and an outer cladding is disposed about the cladding adapted to substantially confine pump light within the cladding.

A composition comprising a composition of an ethylene-based thermoplastic polymer comprising high density polyethylene (HDPE) blended with a modifier component, an optional blowing agent, optionally with carbon black and / or one or more additives, to make foamed articles.

A composition comprising a blend of an ethylene-based thermoplastic polymer comprising high density polyethylene (HDPE) blended with a modifier component, and optionally with a carbon black and / or one or more additives to provide reduced shrinkage of the extruded composition and components made from the composition.

A method and apparatus for making products from polymer wood fiber composite is described. The method includes the steps of providing a extruder having two counter-rotating non-intermeshing screws, supplying to the extruder fiber material and polymer material, mixing and heating the fiber material and polymer material in the extruder for form a mixture, removing the mixture from the extruder and placing the mixture in a press, and compression molding the mixture in the press to form the product.

A fiber Chirped Pulse Amplification (CPA) laser system includes a fiber mode-locking oscillator for generating a laser for projecting to a fiber stretcher for stretching a pulse width of the laser wherein the stretcher further comprising a self-phase modulation (SPM) assisted photonics crystal fiber (PCF) single mode (SM) fiber stretcher. The fiber CPA laser system further includes a multistage amplifier for amplifying the laser and a high-order dispersion-compensating compressor for compensating high order dispersions and compressing the pulse width of the laser.

The present invention provides a method for generating four-wave mixing to obtain idler light with high efficiency, in which the range of lengths of an optical fiber is appropriately set, and probe light and pumping light, having different frequencies, are launched into the optical fiber. When the nonlinear coefficient of the optical fiber, the loss per unit distance, and the wavelength and intensity of the probe light and pumping light are set to certain values, the idler light conversion efficiency at the output end of the optical fiber is a periodic function of an optical fiber having a maximal value and a minimal value. The maximum length of the optical fiber to be used to obtain four-wave mixing is set to be equal to or less than the length Lmax (Lmax=Lm+ΔL) which is given by adding the length of the optical fiber Lm, at which the idler light conversion efficiency takes on the first maximal value in the aforementioned periodic function and distance ΔL or 10% of L.

The invention discloses a cotton fiber predominantly-expressed gene GhMSMO2-2, which has one of the following nucleotide sequences: a cDNA sequence shown in SEQ ID NO.1, a gDNA sequence shown in SEQ ID NO.2, and a nucleotide sequence which has over 85% homology with the DNA sequences above and encodes functional proteins same as those encoded by the DNA sequences above, or a nucleotide sequence hybridized with the nucleotide sequences above under high-preciseness conditions; a protein encoded by the gene has an amino acid sequence shown in SEQ ID NO.3; the invention also provides a plant expression vector of the gene which at least contains a promoter sequence and the nucleotide sequences of the gene; the invention further provides a preparation method of a transgenic cotton containing the gene, which is implemented by transforming a host by using the vector, so that a transformant is obtained; and transforming a cotton by using the transformant, so that the transgenic cotton is obtained. The GhMSMO2-2 gene can be applied to the promotion of the plant growth of the transgenic cotton, the increasing of fiber length, and the improvement of fiber quality and yield.

Laser apparatus (1) comprising a reference source (2), a reference fibre (3), and at least one laser diode (4), wherein the reference fibre (3) comprises a core (5) having a refractive index n1 and a first cladding (6) having a refractive index n2, the first cladding (6) is surrounded by a second cladding (7) having a refractive index n3, the refractive index n1 is greater than the refractive index n2, the refractive index n2 is greater than the refractive index n3, the laser diode (4) emits laser radiation (8) that is guided through the first cladding (6) of the reference fibre (3), the reference source (2) emits reference radiation (9) that has a predetermined wavelength λR (10), the reference radiation (9) is guided through the core (5) of the reference fibre (3) to the laser diode (4), and the reference radiation (9) that is guided through the core (5) of the reference fibre (3) to the laser diode (4) has a power (11) at the predetermined wavelength λR (10), which power is greater than an injection locking threshold of the laser diode.

A hybrid carbon fiber spun yarn comprising a core region which comprises carbon fibers as a main component, and a surrounding region which comprises carbon fibers as a main component and covers an outer peripheral surface of the core region;wherein 20% by mass or more of fibers forming the core region are long carbon fibers having a fiber length of 500 mm or longer,80% by mass ormore of fibers forming the surrounding region are short carbon fibers having a fiber length of less than 500 mm, anda mass ratio between the long carbon fibers and the short carbon fibers (long carbon fibers:short carbon fibers) is in a range of 20:80 to 80:20.

A process for producing a composite product comprising fibres of a lignocellulosic material or natural fibres and a plastics material utilises a liquid or particulate binder formulation comprising a thermoset resin and a thermoplastic polymer, monomer, or oligomer. A composite product is formed for use as or in forming a feedstock in plastics manufacture may be broken down under heat and mechanical shearing in a plastics extrusion machine to release the major fraction of the fibres, or the product may be useful as an intermediate product in other form or as an end product.

Various methods and systems of making inorganic fiber / flake reinforced composites having a thermoplastic matrix are disclosed. The methods use systems similar to those used to make inorganic fiber / flake reinforced products having a thermoset matrix, but the systems and methods are modified to use thermoplastic precursor monomer(s) followed by in situ polymerization of the monomer(s) during and / or following forming of the desired shape of the products. These methods permit the manufacture of superior inorganic fiber reinforced thermoplastic matrix composites in large and very large shapes heretofore not possible, or practical.

The present invention relates to nanofibrillated cellulose (NFC) for use as viscosity modifier in fluids for enhanced oil recovery. The fluids contain NFC with an aspect ratio of less than 1000 where the nanofibrils have a diameter between 5 and 50 nanometer and a length of less than 10 μm.

A composition comprising a blend of high density polyethylene (HDPE) and a nucleating component, with optional additives, in amounts effective to provide reduced shrinkage of the extruded composition and components made from the composition.

An optical fiber includes: a first core portion doped with rare earth ions; a second core portion having a lower refractive index than that of the first core portion, provided along an outer circumference of the first core portion, and doped with the rare earth ions; and a clad portion having a lower refractive index than that of the second core portion and provided along an outer circumference of the second core portion, and is configured such that a concentration of the rare earth ions added to the second core portion is higher than that to the first core portion. With this configuration, it is possible to suppress an amount of FWM crosstalk in an optical amplification by decreasing the length of a fiber while alleviating efficiency deterioration due to concentration quenching.

The invention discloses a vertical rotating fluorescent molecule tomography imaging system. The imaging system comprises a light source excitation device, an optical fiber switching device, a winding reel, a fluorescence excitation device, a fluorescence detection device, a rotating table, an examination table, a horizontal moving table and a computer. The optical fiber switching device and the winding reel solve the problems of electrical connection, optical transmission and data transmission in the rotating process of an imaging platform, and meanwhile two imaging modes can be switched freely; the design of an optical path of a plane mirror is adopted in an imaging part, the rotation radius of the system is reduced, and therefore the system can be simple and compact; reflecting type two-dimensional fluorescent molecule imaging and transmission-type three-dimensional fluorescent molecule tomography imaging of 360 degrees can be achieved at the same time, the two imaging modes are integrated on the same device, and the amount of information capable of being obtained is increased; the light source excitation device, the optical fiber switching device, the fluorescence detection device and the like are designed in a modular mode, and therefore the portability and the universality are good.

The invention relates to a whey protein isolate nanofiber / carbon nanotube composite material and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a whey protein isolate nanofiber solution: dissolving a whey protein isolate solution into deionized water through stirring, so as to prepare a stock solution with a mass concentration of 6wt%; adding a hydrochloric acid solution, so as to regulate the pH value of the stock solution to be 4.75; carrying out centrifugal treatment; filtering supernate; regulating the pH value of the supernate to be 2 byvirtue of the hydrochloric acid solution; diluting the supernate by virtue of the hydrochloric acid solution until the protein concentration is 2wt%; carrying out water-bath heating; and carrying outstirring at a speed of 290rpm; and (2) carrying out ultrasonic treatment on a carbon nanotube solution with a mass concentration of 0.05wt%-0.15wt%; adding the whey protein isolate nanofiber solutionwith the mass concentration of 1%, and carrying out magnetic stirring; carrying out hydrothermal reaction; putting the mixed solution into a drying tank for drying; and carrying out grinding so as toobtain powder. The whey protein isolate nanofiber / carbon nanotube composite material is capable of bearing metformin hydrochloride and cutting whey protein isolate nanofibers. The whey protein isolatenanofiber / carbon nanotube composite material belongs to the technical field of carbon nanocomposite materials.

A new type of tunable fiber Bragg grating (FBG) is proposed based on the compression of FBG from both sides. In this technique, the FBG is compressed from both sides simultaneously which provides the more uniform force distribution along the grating compared to the compression from one side. As a result, the grating period changes uniformly due to compression and the same spectral shape can be achieved over a wide spectrum. The double-sided compression technique represents a significant improvement over the prior wavelength tunable fiber grating techniques, especially for the long gratings.