Abstract: Packaging sheet (1) intended for packaging a food product, in particular a cheese product, the packaging sheet (1) comprising: an internal membrane (5) comprising at least one internal plastic layer (7) intended to be oriented towards the product to be packaged; and a printable external surface (10), the external surface (10) being intended to be oriented away from the product to be packaged, characterized in that the or each internal plastic layer (7) has a plurality of microperforations (8, 9) arranged in a random fashion on the or each internal plastic layer (7) in such a manner that the air permeability of the internal membrane (5) is comprised between 20 mL/min Bendtsen and 50000 mL/min Bendtsen.

Abstract: A packaging sheet (1) which is intended for packaging a cheese product. The packaging sheet (1) comprises an internal membrane (5) and a printable external surface (10). The internal membrane comprises at least one internal plastic layer (7) intended to be oriented towards the cheese product and at least a first water-absorbing layer (12) made of a first water-absorbing material. The external surface (10) is intended to be oriented away from the cheese product. The or each internal plastic layer (7) has a plurality of microperforations (8, 9) arranged in a random fashion on the or each internal plastic layer (7) in such a manner that the aft permeability of the internal membrane (5) is comprised between 5 mL/min Bendtsen and 500 ml/min Bendtsen, the first water-absorbing material having a water absorption rate comprised between 1 and 30 g/m2 as measured using the COBB test C3600.

Abstract: The disclosure includes a method of acquiring high-resolution ultrasound images using an array of transducers using successive transmission matrices.

Abstract: Packaging sheet (1) intended for packaging a food product, in particular a cheese product, the packaging sheet (1) comprising: an internal membrane (5) comprising at least one internal plastic layer (7) intended to be oriented towards the product to be packaged; and a printable external surface (10), the external surface (10) being intended to be oriented away from the product to be packaged, characterized in that the or each internal plastic layer (7) has a plurality of microperforations (8, 9) arranged in a random fashion on the or each internal plastic layer (7) in such a manner that the air permeability of the internal membrane (5) is comprised between 20 mL/min Bendtsen and 50000 mL/min Bendtsen.

Abstract: The packaging sheet (1) is intended for packaging a cheese product. It comprises: an internal membrane (5) comprising at least one internal plastic layer (7) intended to be oriented towards the cheese product and at least a first water-absorbing layer (12) made of a first water-absorbing material; a printable external surface (10), the external surface (10) being intended to be oriented away from the cheese product. The or each internal plastic layer (7) has a plurality of microperforations (8, 9) arranged in a random fashion on the or each internal plastic layer (7) in such a manner that the air permeability of the internal membrane (5) is comprised between 5 mL/min Bendtsen and 500 mL/min Bendtsen, the first water-absorbing material having a water absorption rate comprised between 1 and 30 g/m2 as measured using the COBB test C3600.

Abstract: The disclosure includes a method of acquiring high-resolution ultrasound images using an array of transducers using successive transmission matrices.

Abstract: To analyze short-duration signals by means of an analysis using MARRAT's algorithm with the wavelets of DAUBECHIES, at each step the correlation is done both on the signals coming from the correlation at the previous step by the scale .PHI..sub.O signal and on the signals coming from the correlation at the preceding step by the signal .PHI..sub.O. Thus, at the stage p, there is obtained a homogeneous signal consisting of 2.sup.p .times.N.sup.p points of analysis. This makes it possible, in the method of analysis by wavelets, to obtain a depiction of the results having a homogeneous form making it easier to interpret them.

Abstract: The present invention relates to a process for preparing lipid microparticles of microcrystalline appearance, of a water-insoluble substance possessing an affinity for phospholipids and of at least one phospholipid, the microparticles being stable in suspension in an aqueous solution, characterized in that:a) the said substance and the said phospholipid or phospholipids are dissolved in a common organic solvent for the said substance and for the said phospholipid or phospholipids,b) the solution of said substance and of the said phospholipid or phospholipids is mixed with an aqueous solution in an amount such that an insolubilization takes place in the form of a precipitate, andc) the organic solution is removed to recover an aqueous solution containing the microparticles in the form of microsuspensions.

Abstract: A method and device of scanning objects by means of ultrasound echography by repeated transmission of ultrasound signals and the reception of the ultrasound echoes includes the following operations:(a) storing an echographic line in a memory;(b) determining the ratio of the power spectra for two distinct observation depths, including correction for the effects of the diffraction;(c) storing in a memory and/or displaying the frequency-dependency of the scatter function of the object examined;(d) repeating the proceding operations for two other observation depths which correspond to resepctive boundaries of homogeneous zones, and for other echographic lines.

Abstract: A device for scanning objects, notably biological tissues, by means of ultrasound echography, which device includes at least one ultrasound transducer (10) which is connected to a transmitter stage (20) for the repeated transmission of ultrasound waves to the object to be examined, and to a receiver stage for receiving the echoes reflected in the direction of the transducer. The device in accordance with the invention is characterized mainly in that the receiver stage includes:(A) a transformation device (110) for transforming the echographic signal by calculation of the Mellin transform of this signal;(B) an arithmetic device (120) for calculating a correction function by transformation of the attenuation function;(C) a processing device (130) which consists of a series connection of a multiplier circuit (131) for multiplying the respective output signals of the transformation devices (110) and (120) and a circuit (132) for calculating the inverse Mellin transform of the signal thus obtained.

Abstract: A biological or other material is scanned along a line or plurality of lines by at least one transducer, and the signals received are separated into n substantially equal, consecutive frequency bands after which the envelope of the signals in each frequency band is determined. Each of the signal envelopes, being proportional to the power spectrum of the echographic signal, is divided by a dividing signal which is proportional to the power spectrum of a phantom which has the same attenuation as the object being examined, the logarithm being determined of the signal resulting from this division, after which the following operations are performed in the channels a, b, . . . , i, . . .

Abstract: The combined modality device comprises an ultrasound transducer (10) which is suitable for transmission as well as reception and which is connected to a transmitter stage (20) as well as to a receiver stage (30). The transducer (10) has a bandwidth which at least equals approximately one octave. The transmitter stage (20) comprises a generator for generating activation signals for the transducer (10) with a frequency f.sub.o near the lower limit of said bandwidth, the spectrum of these activation signals excluding the frequency f.sub.1 =2f.sub.o. The receiver stage (30) comprises a B-scan channel and also a B/A processing channel (200) which itself includes a bandpass filter (210) which is centered around said frequency f.sub.1, an envelope detector (220, 230), a comparison circuit (240), a differentiation circuit (250) and a display device (260) whereby measured results in both modalities may be displayed.

Abstract: A method of scanning objects by means of ultrasound echography, including the repeated transmission of ultrasound signals by means of at least one ultrasound transducer and the reception of the ultrasound echoes which correspond to the principal obstacles encountered by the transmitted signals in their propagation direction, characterized in that the method includes the following operations:(a) storing an echographic line in a memory;(b) determining the power spectrum for a given observation depth, including the correction for the effects of diffraction and attenuation;(c) storing in a memory and/or displaying the scatter function of the object examined as a function of frequency;(d) repeating the operations (b), (c) for every desired depth on a given echographic line, and the operations (a), (b), (c) for other echographic lines.

Abstract: An apparatus for examining objects by ultrasonic echography comprising an ultrasonic transmitting transducer (10) and an ultrasonic receiving transducer (20), with which are associated a transmitter stage (30), a receiver stage (40) constituted by a channel (100) for processing the echo signals reflected to the receiving transducer by the obstacles they meet in the said region and a storage and/or visualization stage (60), characterized in that the transmitting transducer (10) is at the same time a receiver and in that the receiver stage (40) also comprises a channel (200) for processing the output signals of the said transmitting/receiving transducer (10) thus formed and a subtraction device (500), whose output is connected to a first input (560) of the storage and/or visualization stage and whose two inputs receive the output signals of the said channels (100) and (200) representative of the real and theoretical travelling times, respectively, between the transducers.