METHOD AND DEVICE FOR INFUSION OF PHARMACOLOGIC AGENTS AND THROMBUS ASPIRATION IN ARTERY

A catheter device and method for treating an artery with thrombus, the catheter comprising an inflatable member. A carrier catheter has a proximal end and a distal end adapted to be inserted percutaneously into an artery, the carrier catheter having a tubular body adjacent to a rear end of the inflatable member. An inflating tube passes through the tubular body and having an open front end in fluid communication with the inflatable member to inflate same. An infusion tube is adapted to infuse pharmacologic agents, the infusion tube passing through the tubular body and having an open front end extending beyond the inflatable member. An aspiration tube is adapted to aspire the thrombus, the aspiration tube passing through the tubular body and having an open front end between the carrier catheter and the inflatable member.

COMPACT HIGH-SPECTRAL-RADIANCE FLUORESCENT LIGHT SOURCE INCLUDING A PARABOLIC MIRROR

A pumped fluorescent light source includes a parabolic mirror that is positioned to focus pumping light from one or more pump sources on a fluorescent body. The resulting assembly provides for heat collection from a back surface of the light source for both the fluorescent body and the pumping sources in a compact package that may be hermetically sealed. The parabolic mirror has reflective surfaces disposed outside of a collection area of an output beam of the light sources, so that the collection area is not obstructed by the parabolic mirror. The light source also includes a collecting lens for collecting the light emitted by the body. The parabolic mirror focuses the stimulus light on the fluorescent body to stimulate emission. An additional parabolic mirror may be included behind the fluorescent body to focus the fluorescent emissions that do not directly enter the collection area at a point of collection.

COMPOSITION FOR POLYPHOSPARENE-BASED FLOOR COVERING FOR EXAMPLE

L'invention concerne des compositions susceptibles d'être utilisées pour la réalisation de revêtements de sol utilisables dans le domaine aéronautique, caractérisées en ce qu'elles comprennent un liant constitué par un polyphosphazène. Les revêtements fabriqués à partir de ces compositions sont particulièrement adaptés au domaine de l'aéronautique.

STAINLESS STEEL PASSIVATION IN AN ORGANOSULFONIC ACID MEDIUM

Pour éviter la corrosion des aciers inoxydables en milieu acide organosulfonique, on ajoute au milieu au moins un oxydant choisi parmi les sels ou oxydes de cérium (IV), fer (III), molybdène (VI) ou vanadium (V), les nitrites et les pers ulfates, en une quantité suffisante pour placer le potentiel spontané entre les potentiel s de passivité et de transpassivation.

DIAGNOSE VON AUTOIMMUNKRANKHEITEN DES INNENOHRES DURCH BESTIMMUNG VON MYELIN PROTEIN P NULL

METHOD AND DEVICE FOR INFUSION OF PHARMACOLOGIC AGENTS AND THROMBUS ASPIRATION IN ARTERY

A catheter device and method for treating an artery with thrombus, the catheter comprising an inflatable member. A carrier catheter has a proximal end and a distal end adapted to be inserted percutaneously into an artery, the carrier catheter having a tubular body adjacent to a rear end of the inflatable member. An inflating tube passes through the tubular body and having an open front end in fluid communication with the inflatable member to inflate same. An infusion tube is adapted to infuse pharmacologic agents, the infusion tube passing through the tubular body and having an open front end extending beyond the inflatable member. An aspiration tube is adapted to aspire the thrombus, the aspiration tube passing through the tubular body and having an open front end between the carrier catheter and the inflatable member.

Laser-pumped high-radiance incoherent light source

A high-radiance broadband incoherent light source is provided by pumping a body formed from a doped material, such as a Ce:YAG crystal with one or more laser diodes. The laser diodes emit at a stimulus wavelength, which may be an absorption wavelength of the body, and the body fluoresces to emit broadband light in a wide emission band. The body is either disposed in, or forms a light-concentrating cavity, e.g., reflective surfaces, which may be dichroic surfaces, can be formed on or attached to the sides of the body to concentrate the emitted light. The light is captured by a light collector that is coupled to an output face of the body to produce a broadband illumination beam. One or more of the reflective surfaces forming the light-concentrating cavity may form a heat sink.

COMPOSITION, IN PARTICULAR FOR FLOOR COVERING, BASED ON POLYPHOSPHAZENE

BIOLOGICAL TISSUE INSPECTION METHOD AND SYSTEM

A method and system for inspecting biological tissue that has no applied coatings or treatments to improve reflectivity comprises an optical detection system with an exposed surface for inspection by an optical detection system; and a laser for exciting an ultrasonic wave within the tissue, which wave propagates within the tissue at least near the surface. The optical detection system includes: a laser to emit a pulsed detection laser beam onto the surface at a detection spot, the pulsed laser beam having a wavelength at which there is large scattering and little absorption by the tissue, and a pulse duration is chosen to correspond with ultrasonic propagation times associated with a range of depths of the scan, whereby the fluence of the detection laser is not applied unless ultrasonic information regarding a given depth is being obtained; and large étendue collection optics for collecting reflected and backscattered light from the detection spot; and a demodulator to extract information ...

Composition, in particular for floor covering polyphosphazene

L'invention concerne des compositions utilisables notamment dans le domaine des revêtements de sol. Ces compositions comprennent comme liant un polyphosphazène. Les revêtements fabriqués à partir de ces compositions sont particulièrement adaptés au domaine de l'aéronautique.

Passivation of stainless steels in organosulphonic acid medium

De-acidification of crude petroleum oils and separation of naphthenates formed, comprises use of specific solvent composition based on volatile amine and light alcohol

The process reduces the acidity of the crude oil to an acceptable level by extraction of the neutralized naphthenates and conversion to naphthenic acids which are valorizable. De-acidification comprises de-salting of the crude oil by washing with softened water, neutralization of naphthenic acids by a liquid/liquid mixing process with a 0-6C amine (0C signifying ammonia), and extraction and separation of the naphthenates using a 1-6C alcoholic solvent to produce a de-acidified crude oil and a solvent extraction flux. Independent claims are also included for the installation to carry out the process, comprising a de-salting unit to produce a stabilized product, a mixer (M1) in which the stabilized oil is mixed with the amine, alcohol and water, also (optionally) a mixer (M1<1>) in which the mixture from M1 is mixed with the alcohol and water, a separator (S1) connected to M1 or M1<1> from which the de-acidified oil and solvent-extracted naphthenates are withdrawn, and the solvent composition used.

BIOLOGICAL TISSUE INSPECTION METHOD AND SYSTEM

A method and system for inspecting biological tissue that has no applied coatings or treatments to improve reflectivity comprises an optical detection system with an exposed surface for inspection by an optical detection system; and a laser for exciting an ultrasonic wave within the tissue, which wave propagates within the tissue at least near the surface. The optical detection system includes: a laser to emit a pulsed detection laser beam onto the surface at a detection spot, the pulsed laser beam having a wavelength at which there is large scattering and little absorption by the tissue, and a pulse duration is chosen to correspond with ultrasonic propagation times associated with a range of depths of the scan, whereby the fluence of the detection laser is not applied unless ultrasonic information regarding a given depth is being obtained; and large étendue collection optics for collecting reflected and backscattered light from the detection spot; and a demodulator to extract information from the ultrasonic wave from the collected light. 1. A method for inspecting biological tissue , the method comprising:providing biological tissue to be inspected, and immobilizing an optical detection system with respect to the biological tissue such that an exposed surface of the tissue is presented to the optical detection system, wherein the surface is not coated to improve its reflectivity;exciting an ultrasonic wave to propagate within the tissue at least near the surface; and a. emit a pulsed detection laser beam onto the surface at a detection spot, the pulsed laser beam having a wavelength at which there is little absorption by the tissue, and a pulse duration chosen with respect to the excitation, to correspond with ultrasonic propagation times associated with a range of distances from the surface, whereby the fluence of the detection laser is only applied when measuring ultrasonic displacement consistent with sampling the desired range;', 'b. collect reflected and ...

Method and device for infusion of pharmacologic agents and thrombus aspiration in artery

A catheter device and method for treating an artery with thrombus, the catheter comprising an inflatable member. A carrier catheter has a proximal end and a distal end adapted to be inserted percutaneously into an artery, the carrier catheter having a tubular body adjacent to a rear end of the inflatable member. An inflating tube passes through the tubular body and having an open front end in fluid communication with the inflatable member to inflate same. An infusion tube is adapted to infuse pharmacologic agents, the infusion tube passing through the tubular body and having an open front end extending beyond the inflatable member. An aspiration tube is adapted to aspire the thrombus, the aspiration tube passing through the tubular body and having an open front end between the carrier catheter and the inflatable member.

Compact high-spectral-radiance fluorescent light source including a parabolic mirror

A pumped fluorescent light source includes a parabolic mirror that is positioned to focus pumping light from one or more pump sources on a fluorescent body. The resulting assembly provides for heat collection from a back surface of the light source for both the fluorescent body and the pumping sources in a compact package that may be hermetically sealed. The parabolic mirror has reflective surfaces disposed outside of a collection area of an output beam of the light sources, so that the collection area is not obstructed by the parabolic mirror. The light source also includes a collecting lens for collecting the light emitted by the body. The parabolic mirror focuses the stimulus light on the fluorescent body to stimulate emission. An additional parabolic mirror may be included behind the fluorescent body to focus the fluorescent emissions that do not directly enter the collection area at a point of collection.

DIAGNOSE VON AUTOIMMUNKRANKHEITEN DES INNENOHRES DURCH BESTIMMUNG VON MYELIN PROTEIN P NULL

Biological tissue inspection method and system

A method and system for inspecting biological tissue that has no applied coatings or treatments to improve reflectivity comprises an optical detection system with an exposed surface for inspection by an optical detection system; and a laser for exciting an ultrasonic wave within the tissue, which wave propagates within the tissue at least near the surface. The optical detection system includes: a laser to emit a pulsed detection laser beam onto the surface at a detection spot, the pulsed laser beam having a wavelength at which there is large scattering and little absorption by the tissue, and a pulse duration is chosen to correspond with ultrasonic propagation times associated with a range of depths of the scan, whereby the fluence of the detection laser is not applied unless ultrasonic information regarding a given depth is being obtained; and large étendue collection optics for collecting reflected and backscattered light from the detection spot; and a demodulator to extract information from the ultrasonic wave from the collected light.

COMPOSITION FOR FLOOR-COVERING BASED ON POLYPHOSPHAZENE

PURPOSE: To obtain compsn. being useful for manufacturing floor-coverings usable even in aeronautics sector by incorporating a binder constituting a specified compd. CONSTITUTION: A binder comprising polyphosphazene [e.g. a compd. of formula (90% of R are phenyl groups and 10% thereof are o-allylphenyl groups) with a mol.wt. of 1,200,000] which is pref. a crosslinkable or vulcanizable high mol.wt. polyphosphazene, is incorporated. COPYRIGHT: (C)1992,JPO ...

Method for characterization of laser pulses using pulse quality factor

There is described a method of characterizing a short laser pulse, the method comprising the steps of obtaining root-mean-square widths of the pulse through second order moments of the pulse; obtaining a spectral width of the pulse using the root-mean-square widths; obtaining a root-mean square temporal width of the pulse; and defining a Pulse Quality Factor proportional to a product of the spectral width and the temporal width. This approach does not require complete characterization of laser pulses and eliminates the need of any assumption to interpret autocorrelation traces. The method can be applied to pulses of arbitrary shape.

Inactivation of stainless steel in organic sulfonic acid medium

NON-HUMAN ANIMAL GENETICALLY MODIFIED AND DIABETIC.

La présente invention concerne un animal non humain, en particulier un mammifère non humain tel q'une souris, comportant une délétion partielle ou total du gène codant une protéine de la famille ONECUT.

COMPACT HIGH-SPECTRAL-RADIANCE FLUORESCENT LIGHT SOURCE INCLUDING A PARABOLIC MIRROR

A pumped fluorescent light source includes a parabolic mirror that is positioned to focus pumping light from one or more pump sources on a fluorescent body. The resulting assembly provides for heat collection from a back surface of the light source for both the fluorescent body and the pumping sources in a compact package that may be hermetically sealed. The parabolic mirror has reflective surfaces disposed outside of a collection area of an output beam of the light sources, so that the collection area is not obstructed by the parabolic mirror. The light source also includes a collecting lens for collecting the light emitted by the body. The parabolic mirror focuses the stimulus light on the fluorescent body to stimulate emission. An additional parabolic mirror may be included behind the fluorescent body to focus the fluorescent emissions that do not directly enter the collection area at a point of collection. 1. A method of generating light , comprising:providing a body formed from a material doped to have a fluorescent property when stimulated at a stimulus wavelength;stimulating the body with one or more light sources that produce a corresponding one or more stimulus beams having a wavelength substantially equal to the stimulus wavelength, wherein the one or more stimulus beams are directed at the body with a parabolic mirror to cause the body to emit light in an emission band; andcollecting and collimating at least a portion of the light emitted by the body by a collimating device to produce a collimated output beam.2. The method of claim 1 , wherein the parabolic mirror includes a central aperture passing therethrough for admitting the portion of the light emitted by the body claim 1 , and wherein the collecting is performed by the collimating device positioned to collect the at least a portion of the light emitted by the body at the central aperture of the parabolic mirror.3. The method of claim 2 , wherein the one or more light sources are multiple light ...

PASSIVATION OF STAINLESS STEEL IN ORGANIC SULFONIC ACID MEDIUM

PROBLEM TO BE SOLVED: To provide a method for protecting a stainless steel from corrosion due to an organic sulfonic acid. SOLUTION: To avoid the corrosion of stainless steel in the organic sulfonic acid medium, at least one oxidizing agent selected from an oxide, a salt, a nitrite and a persulfate of cerium (IV), iron (III), molybdenum (VI) or vanadium (V) is added to the medium by a quantity sufficient to place the self potential between the passivation potential and the over-passivation potential. COPYRIGHT: (C)1999,JPO ...

Diagnostic test kits

The invention provides a method for the treatment of prophylaxis of autoimmune inner ear disease, in particular, deafness caused by autoimmune inner ear disease, which comprises administering to a host in need thereof a vaccine comprising peripheral myelin protein zero. The invention further provides diagnostic methods and kits derived from the protein.

A PHARMACEUTICAL COMPOSITION FOR TREATMENT OR PREVENTION OF DIABETES OR CANCER.

La présente invention concerne une composition pharmaceutique comprenant un véhicule pharmaceutique adéquat et un élément choisi parmi le groupe constitué par une séquence nucléotidique codant un peptide de la famille ONECUT, un vecteur comprenant cette séquence nucléotidique, la séquence polypeptidique codée par cette séquence nucléotidique et/ou une lignée cellulaire transformée par ledit vecteur et exprimant le peptide de la famille ONECUT.

METHOD AND DEVICE FOR INFUSION OF PHARMACOLOGIC AGENTS AND THROMBUS ASPIRATION IN ARTERY

A catheter device and method for treating an artery with thrombus, the catheter comprising an inflatable member. A carrier catheter has a proximal end and a distal end adapted to be inserted percutaneously into an artery, the carrier catheter having a tubular body adjacent to a rear end of the inflatable member. An inflating tube passes through the tubular body and having an open front end in fluid communication with the inflatable member to inflate same. An infusion tube is adapted to infuse pharmacologic agents, the infusion tube passing through the tubular body and having an open front end extending beyond the inflatable member. An aspiration tube is adapted to aspire the thrombus, the aspiration tube passing through the tubular body and having an open front end between the carrier catheter and the inflatable member. 1. A method for treating an artery having a thrombus comprising: percutaneously positioning a catheter with an infusion tube in the artery proximally to the thrombus; passing a tip of the infusion tube through the thrombus; and infusing at least one pharmacologic agent distally to the thrombus via the infusion tube.2. The method according to claim 1 , wherein positioning the catheter comprises positioning an inflatable member of the catheter proximally to the thrombus claim 1 , and further comprising inflating the inflatable member proximally to the thrombus.3. The method according to claim 2 , wherein inflating the inflatable member proximally to the thrombus is performed prior to infusing at least one pharmacologic agent distally to the thrombus.4. The method according to claim 1 , wherein positioning the catheter further comprises positioning an aspiration tube of the catheter proximally to the thrombus claim 1 , the aspiration tube being proximal to the inflatable member.5. The method according to claim 4 , further comprising performing an aspiration via the aspiration tube while deflating the inflatable member to aspire the thrombus.6. The ...

LASER-PUMPED HIGH-RADIANCE INCOHERENT LIGHT SOURCE

A high-radiance broadband incoherent light source is provided by pumping a body formed from a doped material, such as a Ce:YAG crystal with one or more laser diodes. The laser diodes emit at a stimulus wavelength, which may be an absorption wavelength of the body, and the body fluoresces to emit broadband light in a wide emission band. The body is either disposed in, or forms a light-concentrating cavity, e.g., reflective surfaces, which may be dichroic surfaces, can be formed on or attached to the sides of the body to concentrate the emitted light. The light is captured by a light collector that is coupled to an output face of the body to produce a broadband illumination beam. One or more of the reflective surfaces forming the light-concentrating cavity may form a heat sink. 1. A broadband incoherent light source having a high spectral radiance for providing a broadband illumination output beam , comprising:a body having a material doped to have a fluorescent property when stimulated at a stimulus wavelength, wherein the body provides or is disposed in a light-concentrating cavity;one or more lasers for producing a corresponding one or more stimulus beams having a wavelength substantially equal to the stimulus wavelength, wherein the one or more stimulus beams are directed at one or more faces of the body to cause the body to emit light in an emission band; anda light collector optically coupled to an output face of the body for producing the broadband illumination output beam by collecting at least a portion of the light emitted by the body.2. The broadband light source of claim 1 , wherein the lasers are laser diodes.3. The broadband light source of claim 1 , wherein the stimulus wavelength is between 440-460 nm.4. The broadband light source of claim 1 , wherein the stimulus wavelength lies in an optical absorption band of the body.5. The broadband light source of claim 1 , wherein the body is a solid-state matrix doped with a doping agent.6. The broadband light ...

METHOD AND DEVICE FOR INFUSION OF PHARMACOLOGIC AGENTS AND THROMBUS ASPIRATION IN ARTERY

A catheter device and method for treating an artery with thrombus, the catheter comprising an inflatable member. A carrier catheter has a proximal end and a distal end adapted to be inserted percutaneously into an artery, the carrier catheter having a tubular body adjacent to a rear end of the inflatable member. An inflating tube passes through the tubular body and having an open front end in fluid communication with the inflatable member to inflate same. An infusion tube is adapted to infuse pharmacologic agents, the infusion tube passing through the tubular body and having an open front end extending beyond the inflatable member. An aspiration tube is adapted to aspire the thrombus, the aspiration tube passing through the tubular body and having an open front end between the carrier catheter and the inflatable member. 1. A method for treating an artery having a thrombus comprising:percutaneously positioning a catheter with an infusion tube in the artery proximally to the thrombus;passing a tip of the infusion tube through the thrombus; andinfusing at least one pharmacologic agent distally to the thrombus via the infusion tube.2. The method according to claim 1 , wherein positioning the catheter comprises positioning an inflatable member of the catheter proximally to the thrombus claim 1 , and further comprising inflating the inflatable member proximally to the thrombus.3. The method according to claim 2 , wherein inflating the inflatable member proximally to the thrombus is performed prior to infusing at least one pharmacologic agent distally to the thrombus.4. The method according to claim 1 , wherein positioning the catheter further comprises positioning an aspiration tube of the catheter proximally to the thrombus claim 1 , the aspiration tube being proximal to the inflatable member.5. The method according to claim 4 , further comprising performing an aspiration via the aspiration tube while deflating the inflatable member to aspire the thrombus.6. The method ...

Guide assemblies for press tools

The guide assembly (1) is made up of a column (10) and a coaxial sleeve (40), one of the elements being mobile in a linear forward and return repetitive motion in relation to the other fixed element. It is characterised that it contains also needle rollers (30) which are disposed to roll between the column and the sleeve. These latter containing each one flat rolling faces of an equal number disposed face to face, one to the other at a distance closely equal to the diameter of the needle rollers (30). The number of flat rolling faces is equal to four with them disposed in the form of a square. The rollers circulate in a closed circuit defined by the sleeve and by two scraper rings (20,20') placed at each end of the sleeve.

Guide assembly, in particular for cutting tool.

Process for deacidification of crude oils and device for its implementation

nuclear fuel element

Corrosion inhibiting of stainless steel in organic sulphonic acid

Stainless steel is protected against organosulfonic acid corrosion by adding a specified oxidizing agent to the acid. Stainless steel is protected against corrosion by an organosulfonic acid by adding an oxidizing agent selected from the salts or oxides of cerium (IV), iron (III), molybdenum (VI) or vanadium (V), nitrites and persulfates to an aqueous solution of the acid. An Independent claim is also included for an aqueous organosulfonic acid solution containing the oxidizing agent described above in amount such that its spontaneous potential, measured by a stainless steel electrode, is located in the passivity zone determined under the same conditions but in the absence of the oxidizing agent. Preferred Features: The oxidizing agent addition comprises 1 x 10<-4> to 1 (especially 0.001-0.5) mole/l alkali metal (especially sodium) nitrite; 1 x 10<-5> to 1 x 10<-1> (especially 1 x 10<-4> to 5 x 10<-2>) mole/l Ce<4+> ions; or 1 x 10<-3> to 2 x 10<-2> (especially 5 x 10<-3> to 1 x 10<-2>) mole/l each of a molybdenum (VI) salt and a cerium (IV) salt.

Photobleaching of fiber bragg gratings written through the fiber coating

A method and a system for providing a low absorption Bragg grating along a grating region of an optical fiber are presented. The Bragg grating is written along the grating region by multiphoton absorption of ultrafast light pulses impinged on this grating region through a polymer coating of the optical fiber. The Bragg grating is then photobleached by propagating a photobleaching light beam along the optical fiber. The photobleaching light beam has optical parameters selected to reduce defects in the grating region induced by the writing of the Bragg grating in a substantially non-thermal regime.

Method for characterization of laser pulses using pulse quality factor

There is described a method of characterizing a short laser pulse, the method comprising the steps of obtaining root-mean-square widths of the pulse through second order moments of the pulse; obtaining a spectral width of the pulse using the root-mean-square widths; obtaining a root-mean square temporal width of the pulse; and defining a Pulse Quality Factor proportional to a product of the spectral width and the temporal width. This approach does not require complete characterization of laser pulses and eliminates the need of any assumption to interpret autocorrelation traces. The method can be applied to pulses of arbitrary shape.

Composition pharmaceutique destinee au traitement ou a la prevention du diabete, du cancer ou du syndrome de waardenburg

La présente invention concerne une composition pharmaceutique comprenant un véhicule pharmaceutique adéquat et un élément choisi parmi le groupe constitué par une séquence nucléotidique codant un peptide de la famille ONECUT, un vecteur comprenant cette séquence nucléotidique, la séquence polypeptidique codée par cette séquence nucléotidique et/ou une lignée cellulaire transformée par ledit vecteur et exprimant le peptide de la famille ONECUT.

Animal non humain genetiquement modifie et diabetique

La présente invention concerne un animal non humain, en particulier un mammifère non humain tel qu'une souris, comportant une délétion partielle ou totale du gène codant une protéine de la famille ONECUT, en particulier du gène HNF-6, OC-2 ou OC-3.

Pharmaceutical composition intended for the treatment or for the prevention of diabetes, of cancer or of waardenburg syndrome

The invention concerns a pharmaceutical comprising an adequate pharmaceutical support and an element selected among the group consisting of a nucleotide sequence coding for a peptide of the ONECUT family a vector comprising said nucleotide sequence, the polypeptide sequence coded by said nucleotide sequence and/or a cell line transformed by said vector and expressing the peptide of the ONE CUT family.

Composition pharmaceutique destinee au traitement ou a la prevention du diabete, du cancer, ou du syndrome de waardenburg

La présente invention concerne une composition pharmaceutique comprenant un véhicule pharmaceutique adéquat et un élément choisi parmi le groupe constitué par une séquence nucléotidique codant un peptide de la famille ONECUT, un vecteur comprenant cette séquence nucléotidique, la séquence polypeptidique codée par cette séquence nucléotidique et/ou une lignée cellulaire transformée par ledit vecteur et exprimant le peptide de la famille ONECUT.

Diagnostic test kits

The invention provides a method for the treatment of prophylaxis of autoimmune inner ear disease, in particular, deafness caused by autoimmune inner ear disease, which comprises administering to a host in need thereof a vaccine comprising peripheral myelin protein zero. The invention further provides diagnostic methods and kits derived from the protein.

Vaccines

The invention provides a method for the treatment or prophylaxis of autoimmune inner ear disease, in particular deafness caused by autoimmune inner ear disease, which comprises administering to a host in need thereof a vaccine comprising peripheral myelin protein zero. The invention further provides diagnostic methods and kits derived from the said protein.

Dispositif pour l'étude de la transmission de chaleur entre deux échantillons

Passivation of stainless steels in an acid medium organosulfon

Process for protecting stainless steel against corrosion by organosulphonic acid, aqueous organosulphonic acid solution and oxidising agent

Passivation of stainless steels in organosulphonic acid

Passivação de aços inoxidáveis em meio de ácido organossulfónico.

PASSIVAçãO DE AçOS INOXIDáVEIS EM MEIO DE áCIDO ORGANOSSULFÈNICO. Para evitar a corrosão de ácidos inoxidáveis em um ambiente de ácido organossulfónico, acrescenta-se ao produto ao menos um oxidante escolhido entre os sais ou óxidos de cério (IV), ferro (III), molibdênio (VI) ou vanádio (V), os nitretos e os persulfatos em quantidade suficiente para situar um potencial espontâneo entre os potenciais de passividade e de transpassivação.

Device for infusion of pharmacologic agents and thrombus aspiration in artery

A catheter assembly (10) having a distal shaft (30) having a guide lumen (32) and an infusion lumen (31); a proximal shaft (20) connected to the distal shaft, the proximal shaft defining an aspiration lumen (21) and an inflating lumen (22); an inflatable member (23) at a distal end of the inflating lumen, the inflatable member configured to inflate upon receiving a fluid from the inflating lumen; a stylet tube extending along the aspiration lumen and in fluid communication with the infusion lumen, the stylet tube configured to supply the infusion lumen with a pharmacologic agent. The catheter assembly is configured to be displaced percutaneously in an artery by the guide lumen moving along a guide wire (11).