A cryogenic hydrogen storage vessel includes an outer vacuum vessel, a reinforcement ring on the outer vacuum vessel, an inner pressure vessel inside of the outer vacuum vessel, and a vacuum space between the outer vacuum vessel and the inner pressure vessel. One embodiment of the cryogenic hydrogen storage vessel includes an outer vacuum vessel; a hump-shaped reinforcement ring on the outer vacuum vessel, the hump-shaped reinforcement ring including an external hump portion that protrudes from the hump-shaped reinforcement ring and an internal recess in the hump-shaped reinforcement ring; an inner pressure vessel inside of the outer vacuum vessel, a vacuum space between the outer vacuum vessel and the inner pressure vessel, and a composite support ring in the vacuum space extending from the hump-shaped reinforcement ring on the outer vacuum vessel to the inner pressure vessel, the composite support ring nested in the recess in the hump-shaped reinforcement ring.
The present invention relates to the preparation of collagen-oligourethane-silica hydrogels that are applied as a covering of different biomaterials and mammary tissues. The collagen-oligourethane-silica hydrogels are biocompatible and can be applied to different medical devices and to the bed of wounds on skin, and also include water-soluble drugs or cells. The hydrogel is obtained by combining collagen extracted from various animal tissues, such as tendons, intestinal submucosa and pericardium, from water-soluble oligourethane and from colloidal silica derived from the hydrolysis and condensation of tetraethoxysilane. This liquid mixture, free from organic solvents, is formed at a pH between 2 and 3, under agitation, and is subsequently neutralised at a pH between 7 and 7.4 using a base and a buffer solution. This preparation method allows the properties of collagen hydrogels to be improved and, at the same time, the advantages of the collagen hydrogel to be preserved, such as polymerisation capacity in physiological conditions (pH 7.4, 37 °C) and compatibility with cell culture. This formulation allows the features of the collagen-oligourethane-silica hydrogels to be adapted by selecting and combining raw materials, that is, the liquid precursors that produce the hydrogel, and the reaction conditions, such as origin of the collagen, concentration and chemical structure of the oligourethane, and silica concentration.
A cryogenic hydrogen storage vessel having an outer vacuum vessel, a reinforcement ring on the outer vessel, an inner pressure vessel inside of the outer vessel, and a vacuum space between the outer vessel and the inner pressure vessel. In one embodiment, the ring is a hump-shaped reinforcement ring on the outer vacuum vessel, the hump-shaped reinforcement ring having an external hump portion that protrudes from the hump-shaped reinforcement ring and an internal recess in the hump-shaped reinforcement ring; and a composite support ring in the vacuum space extending from the hump-shaped reinforcement ring on the outer vacuum vessel to the inner pressure vessel, the composite support ring nested in the recess in the hump-shaped reinforcement ring.
A cryogenic hydrogen storage vessel includes an outer vacuum vessel, a reinforcement ring on the outer vacuum vessel, an inner pressure vessel inside of the outer vacuum vessel, and a vacuum space between the outer vacuum vessel and the inner pressure vessel. One embodiment of the cryogenic hydrogen storage vessel includes an outer vacuum vessel; a hump-shaped reinforcement ring on the outer vacuum vessel, the hump-shaped reinforcement ring including an external hump portion that protrudes from the hump-shaped reinforcement ring and an internal recess in the hump-shaped reinforcement ring; an inner pressure vessel inside of the outer vacuum vessel, a vacuum space between the outer vacuum vessel and the inner pressure vessel, and a composite support ring in the vacuum space extending from the hump-shaped reinforcement ring on the outer vacuum vessel to the inner pressure vessel, the composite support ring nested in the recess in the hump-shaped reinforcement ring.
This invention describes the methodology to produce solid heterogeneous chiral organocatalysts that can be used in condensation reactions. The catalysts can be recovered in a simple manner by filtration and can also be reused.
A pressure vessel apparatus for cryogenic capable storage of hydrogen or other cryogenic gases at high pressure includes an insert with a parallel inlet duct, a perpendicular inlet duct connected to the parallel inlet. The perpendicular inlet duct and the parallel inlet duct connect the interior cavity with the external components. The insert also includes a parallel outlet duct and a perpendicular outlet duct connected to the parallel outlet duct. The perpendicular outlet duct and the parallel outlet duct connect the interior cavity with the external components.
The present invention relates to the use of a chemical composition to modify the physical properties (viscosity and interfacial tension) of heavy and extra-heavy crude oils, to increase their mobility. The chemical composition comprises or consists of a combination of systems based on ionic and non-ionic liquids, which may be pure or modified, mixed in an aqueous or organic medium as a dispersing agent, depending on the nature of the crude to be treated, together with a surfactant. The composition is mixed with the crude oil at a temperature between 5 and 100° C., at pressures from 1 atm (14.7 psi) up to about 680.2 atm (10,000 psi). The composition can be mixed with heavy crude oils, at the point of extraction from the well in the field, during the transport of crude oil in pipelines, or in the well discharge pipelines.
C09K 8/584 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
The present invention is related to the application and use of a chemical composition to modify the physical properties (viscosity and interfacial tension) of heavy and extra-heavy crude oils, to increase their mobility. The chemical composition consists of the combination of systems based on ionic liquids or non-ionic liquids, depending on the character of the crude oil to be treated with, or its original modification by polymerization reaction of such liquid with oxirane; these chemicals can be dispersed in the aqueous or organic media; in the first case the composition that is dispersed in the aqueous phase is used at temperatures between 5 and 90 .degree.C, with pressures from 1 up to about 340.23 atm (i.e., 5,000 psi), and under acid-base er within the pH range of 4 to12.5; though one prefers a basic scheme for certain crude oils, i.e., a pH between 7 and 12.5; however, other crudes are better handled under neutral conditions or even acidic conditions, for example those with a pH between 4 and 7; in the second case, the dispersant is organic and consists of a composition of at least one generic solvent and up to three, together with a surfactant that can be based on amphiphile, i.e., sulphonic moiety with hydrocarbon chain, with 12 to 16 carbons and a cation based on alkylamine, in the proportions mentioned in the body of the invention. The applications of interest may occur at various stages during operation with heavy crude oils, from the stage of extraction from the well in the field, or during the transport of crude oil in surface pipelines, or even in the well discharge pipelines; Its use can be performed using a mixing unit in addition of pumping unit with enough pressure to inject the chemical composition, which provokes a substantial reduction of the original fluid viscosity, thus improving te operation during the stages of production, transportation and processing of the heavy and extra-heavy crudes. The chemical composition consists of a combination of systems based on ionic and non-ionic liquids, which may be pure or modified, mixed in dispersing agent, either aqueous or organic, depending on the nature of the crude to be treated with, together with a surfactant, where the composition is used in conditions of temperature between and 100 .degree.C, at pressures from 1 atm (14.7 psi) up to about 680.2 atm (10,000 psi).
C09K 8/58 - Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
F17D 1/17 - Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by mixing with another liquid
9.
Method for the synthesis of solid heterogeneous chiral catalysts and their use in stereoselective reactions
This invention describes the methodology to produce solid heterogeneous chiral organocatalysts that can be used in condensation reactions. The catalysts can be recovered in a simple manner by filtration and can also be reused.
A family of three 8-alkyl boron dipyrromethenes 1, 2, and 3 has been prepared. These compounds are characterized by emission in the green region of the electromagnetic radiation spectrum and exhibit an almost double laser efficiency than other commercial dyes and much greater photostability. The 8-alkyl boron dipyrromethenes are prepared by catalytic hydrogenation (reduction) of the corresponding 8-alkenyl boron dipyrromethenes, which are obtained by Liebeskind-Srogl coupling of thiomethylboron dipyrromethene with an alkenyl boronic acid.
A family of six 8-amino boron dipyrromethenes having Formulas 1, 2, 3, 4, 6, and 7 has been prepared. The presence of the amine group alters the emission properties of the boron dipyrromethene, such that these compounds are characterized by unexpected blue fluorescence, providing for potential use as lasers. The compound having formula 1 has very high quantum yield. The 8-amino boron dipyrromethenes are prepared in a straightforward, high yield synthesis by substituting an amine group for the thiomethyl group at the 8 position in 8-thiomethyl boron dipyrromethene. The compounds having Formulas 6 and 7 may be used to incorporate peptides and proteins, thus providing biomolecules marked with fluorescent fragments.
A family of three 8-alkyl boron dipyrromethenes 1, 2, and 3 has been prepared. These compounds are characterized by emission in the green region of the electromagnetic radiation spectrum and exhibit an almost double laser efficiency than other commercial dyes and much greater photostability. The 8-alkyl boron dipyrromethenes are prepared by catalytic hydrogenation (reduction) of the corresponding 8-alkenyl boron dipyrromethenes, which are obtained by Liebeskind-Srogl coupling of thiomethylboron dipyrromethene with an alkenyl boronic acid.
This research group has found that the thioalkyl group located at position 8 on the boron-dipyrromethene body may be substituted by an amino derivative. It has been discovered that anchoring said amino derivative modifies the normal behaviour of boron-dipyrromethenes making this new compound, having the amino derivative anchored at position 8, fluoresce with a blue colour, resulting in compounds having fluorescent characteristics whereof to date there is no record of any compound fluorescing with a blue colour; a further significant matter is the strategy of synthesis, it being very simple with very high yields, in addition to which a photophysical study realised on propargylamine has revealed that the compound presents very interesting properties conferring thereon potential utilisation in various scientific areas; that which most stands out, for example, is the use thereof as a laser. Moreover the 6 and 7 derivatives may be utilised for incorporation of peptides and proteins, in this manner obtaining biomolecules marked with fluorescent fragments.
A family of 3 members of 8-alkyl boron dipyrromethenes (I, II and III) has been developed, obtained by means of Liebeskind-Srogl coupling with alkenyl boronic acids, followed by catalytic hydrogenation of the alkenyl using hydrogen on palladium, and characterised by high laser efficiency with emission in the green region of the electromagnetic radiation spectrum. These novel derivatives are characterised by a laser efficiency almost double that of other commercial dyes and a much greater photostability.
This invention includes agents and compositions having MRI, PET, CT, X-ray, SPECT or optical signals, and methods for their use in the determination of a target. In some cases, a MRI, PET, CT, X-ray, SPECT, optical or other signal produced by the agent or composition can be affected by the presence of the target. Examples of targets that can be determined by this invention include, but are not limited to zinc, copper, iron ions and other biological targets. Example of application for imaging in vivo includes the function of pancreas and other organs.
The invention relates to a novel, innovative industrial method for producing polystyrene (EPS) foam parts of arbitrary length and having a constant cross-section, with mixed densities located in accordance with the mechanical and thermal properties required for each application. The invention also relates to a machine (apparatus) for producing said solid parts having localized densities defined by the mechanical and thermal requirements of the application. The aforementioned products are produced by joined both longitudinally and transversely. The invention can be used to reduce the standard method to three steps, thereby resulting in a significant saving in terms of production. Moreover, unlike with the standard method, variants can be produced using the above-mentioned method, thereby increasing the range of application said type of products.
B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
17.
METHOD FOR PRODUCING CONTINUOUS EXPANDED POLYSTYRENE FOAM PARTS
The invention relates to a novel, innovative industrial method for producing polystyrene (EPS) foam parts of arbitrary length and having a constant cross-section, with mixed densities located in accordance with the mechanical and thermal properties required for each application. The invention also relates to a machine (apparatus) for producing said solid parts having mixed densities and to a polystyrene (EPS) foam part of arbitrary length and having a longitudinally constant cross-section, with localised densities defined by the mechanical and thermal requirements of the application. The aforementioned products are produced by joining segments which have been partially pre-fired and which can have equal or different densities. In addition, different densities can be joined both longitudinally and transversely. The invention can be used to reduce the standard method to three steps, thereby resulting in a significant saving in terms of production. Moreover, unlike with the standard method, variants can be produced using the above-mentioned method, thereby increasing the range of applications for said type of products.
B29C 44/20 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of indefinite length
B29C 44/22 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of indefinite length consisting of at least two parts of chemically or physically different materials, e.g. having different densities
18.
PNEUMATIC SEED METERING UNIT FOR PRECISION SEEDERS
The invention relates to a pneumatic metering unit for a precision seeder, including: a hopper (1) with an oscillating base (2) and an adjustable hatch (4), as well as a vibration generator (3) in order to facilitate and control the flow of seeds from the hopper to the separation chamber; and a set of metering disks, formed by two identical, co-axial disks (5) which are offset in relation to one another and which are joined by means of a cylinder (13); and a central shaft (7) formed by a hollow tube provided with incisions (17), which is designed to convey suction and pressure from the dispenser (29, 30) to the disks (5) and a smooth cover (6) which is designed to define the seed separation chambers and to direct the seed to the desired location.
The invention relates to a method for preparing continuous aqueous emulsions from fresh fruit, containing at most 20 wt.- % dispersed oil. The aforementioned emulsions contain between 40 and 80 wt.- % chopped or ground fresh fruit with 5 % of a solution of acetic acid in a proportion of 7 to 25 %, 0 to 20 % chilli, at most 1.6 % sodium chloride and between 3 and 25 % water by weight of the total composition of the emulsion and a reduced number of constant and/or optional ingredients. The emulsions are free of chemical substances such as colouring agents, thickening agents, preservatives and flavouring agents, such as to produce organic natural products.
MONTELLANO ESTRUCTURAS Y CONSTRUCCIONES S.A. DE C.V. (Mexico)
Inventor
Cabrera Sixto, José, Manuel
Serwatowski Hlawinska, Ryszard, Jerzy
Flores Ortega, Adrián
Quiroz Ramírez, J., Concepción
Juarez Guani, J., Armando
Abstract
The invention relates to a machine for harvesting vegetables with bulb roots and above-ground stems. The inventive harvester takes the form of an implement which is towed by an agricultural tractor and which is characterised in that it consists of: a frame comprising tyre-equipped wheels, supports for supporting all of the components of the machine and an adjustable towing means for coupling to the tractor, which enables the implement to be aligned with the harvested row(s); a plant-pulling system comprising vertically-opposing bands, which is a characteristic of said class of machine; an adjustable blade which loosens the soil beneath the extracted roots; a standard foliage separation device which is based on the principle patented by William E. Urschel in 1933 (U.S. Patent No. 1,894,802) and which is equipped with two sets of bars that are positioned and actuated using inclined heads; a multiple-axle conveyor comprising elastic rotary elements which remove the soil from the roots by means of scraping and shaking as said elements move forward; a chain elevator comprising bars and strips, which is used to fill the temporary storage hopper; an unloading device which lifts and turns the hopper in order to empty same into a standard transport means; and a hydraulic system for actuating the mechanisms of the harvester, using the power take-off from the tractor as a power source.
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