44results 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 sheet manufacturing apparatus in the present invention includes a defibration unit configured to cause a rotating unit to rotate and dry-defibrating a defibration object, and at least a part of defibrated material that has been dry-defibrated is deposited and heated to manufacture a sheet. A plurality of rotating plates provided with a base section located on a central rotation axis side and a plurality of protruding sections that protrude out in a direction drawing away from the central rotation axis are stacked in the rotating unit such that the protruding sections are in contact in a direction in which the central rotation axis extends.

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 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.

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.

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 λ_R (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 λ_R (10), which power is greater than an injection locking threshold of the laser diode.

An optical bow sight which can be accessorized with an adjustable range sighting pin or torque and cant compensation or both of these features, but is fully functional without either accessory. The optical sight has a shrouded array of fiber optics sight pins which are removable from the sight housing with their support as a single unit. The sight pins are clad in a metallic glass because of the corrosion resistance of such materials. Light collected over a wide field falls on segments of the sight pin fibers coiled in the housing of the optical unit or falls on a trap which redirects the light onto the fiber segments. A lens may optionally be employed to promote the collection of ambient light, and a shutter or variable size aperture may be provided to control the light reaching the sight pin fibers. An elastomeric damper can be advantageously mounted on the sight to minimize accuracy effecting shock and/or vibration, and a level bubble may be provided to aid in avoiding cant of the bow to which the sight is mounted.

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.

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.