After the duodenoscope sterilization issues that plagued manufacturers and patients this year, the FDA is expanding its oversight on medical device disinfection. The regulatory body has ordered that the Pennsylvania-based device manufacturer, Custom Ultrasonics, issue a recall for all of the companys Automated Endoscope Reprocessors.. According to a report produced by the FDA, the endoscope washers have violated the Federal Food, Drug, and Cosmetic Act. A safety alert issued by the agency advised healthcare facilities to use alternative methods to reprocess flexible endoscopes as soon as possible.. Insiders are saying this latest recall is not a standard voluntary recall; Custom Ultrasonics were given seven days from the date of issue - November 13 - to draft and submit a written recall to the FDA. According to the notice issued by the FDA, the most recent FDA inspection of the Custom Ultrasonics facility earlier this year noted continued violations originally identified by the agency in ...

A continuous flow sonochemical reactor was developed capable of producing metastable cadmium sulfide (CdS) nanoplatelets with thicknesses at or below 10 nm. The continuous flow sonochemical reactor included the passive in-line micromixing of reagents prior to sonochemical reaction. Synthesis results were compared with those from reactors involving batch conventional heating and batch ultrasound-induced heating. The continuous sonochemical synthesis was found to result in high aspect ratio hexagonal platelets of CdS possessing cubic crystal structures with thicknesses well below 10 nm. The unique shape and crystal structure of the nanoplatelets are suggestive of high localized temperatures within the sonochemical process. As a result, the particle size uniformity and product throughput are much higher for the continuous sonochemical process in comparison to the batch sonochemical process and conventional synthesis processes. ...

Application of ultrasonic waves is one of the novel techniques for the improvement of water treatment process. In this study, ultrasonic waves were irradiated to drinking water for water softening process and other contaminants removal. The experimental results showed that this technique improved the water treatment process efficiently. The study also revealed that the various parameters such as amplitude, frequency and irradiation time could affect the efficiency of ultrasound techniques for the improvement of water quality.

TY - GEN. T1 - Ultrasonic magnetostrictive transducers for guided ultrasonic waves in thin wires. AU - Kropf, Matthew M.. AU - Tittmann, Bernhard R.. PY - 2007/11/5. Y1 - 2007/11/5. N2 - The magnetostrictive effect is used to generate ultrasonic waves for a variety of health monitoring applications. Given the ductile nature of many ferromagnetic materials and the common geometrical configuration of magnetic inductance coils, magnetostrictive generation of ultrasound is especially suitable for long cylindrical waveguides such as thin wires. Furthermore, utilizing ultrasonic guided wave modes in such waveguides provides a robust tool for remote inspection of materials or environments over long distances. Through the use of different guided wave modes, structural health monitoring sensors could be tailored to suit individual applications. Guided wave modes offer a choice in displacement profile allowing sensors to be designed to be either sensitive or impervious to surface effects. The dispersivity ...

Ultrasound standing wave fields are generated in a tissue-culture plate containing endothelial cells embedded in collagen. Endothelial cells form the insides of blood vessels. Pressure from ultrasound standing wave fields nudges the cells into predetermined positions. The frequency and intensity of the waves organize the cells and control the density and spacing of cell bands. Samples are then polymerized in an incubator and locked into place. Their close positioning encourages cells to signal to each other and sprout three-dimensional blood vessels.. Tissue constructs are visualized with multiphoton microscopy, a technique that captures specimens in three-dimensional sections.. Distinct and interesting formations can be seen depending on the frequency and intensity of the ultrasound stationary wave fields, Helguera said. We decided to quantitatively analyze these three-dimensional data sets to extract parameters characteristic of each exposure regime.. Imaging science Ph.D. student Mohammed ...

Thesis 1954 , Secondary Emission from Metallic Deposits from An Electrolyte Threated By Ultrasonic Waves, Secondary Emission from Metallic Deposits from An Electrolyte Threated By Ultrasonic Waves

Polymerization of methyl methacrylate with Grignard reagents and benzoyl peroxide under ultrasonic irradiation was carried out and the effect of the ultrasonic irradiation on the stereoregularity and the properties of the polymers obtained was studied. No effect of ultrasonic irradiation on the stereoregularity of the polymers was observed, but the yield and the intrinsic viscosity of the polymers were lower than those of polymers produced without ultrasonic irradiation. It is, therefore, assumed that the bonds at a propagating site between an active polymer end and a counterion are fairly strong and are not broken by the externally applied energy corresponding to an ultrasonic wave of 500 keycles/sec., even though carbon-carbon covalent bonds in the main chain are broken. ...

The present invention is an apparatus and method for ultrasonically treating a liquid to generate a product. The apparatus is capable of treating a continuously-flowing, or intermittently-flowing, liquid along a line segment coincident with the flow path of the liquid. The apparatus has one or more ultrasonic transducers positioned asymmetrically about the line segment. The ultrasonic field encompasses the line segment and the ultrasonic energy may be concentrated along the line segment. Lysing treatments have been successfully achieved with efficiencies of greater than 99% using ultrasound at MHz frequencies without erosion or heating problems and without the need for chemical or mechanical pretreatment, or contrast agents. The present invention overcomes drawbacks of current ultrasonic treatments beyond lysing and opens up new sonochemical and sonophysical processing opportunities.

The IRE Professional Group on Ultrasonic Engineering was formed in 1953. After the IREs merge with AIEE in 1963, the group changed its name to the Professional Group on Sonics and Ultrasonics. In 1984 the group again changed its name to the IEEE Ultrasonics, Ferroelectrics and Frequency Control Society.[2] ...

Rinco Ultrasonics Switzerland is represented in Australia by Techspan Australia Pty Limited. Techspan supply high technology industrial plant and machinery to the manufacturing and service industries. Techspan have been involved with ultrasonics since 1979, building a wealth of knowledge in plastic joining technologies.. Techspan operate central distribution warehousing facilities in Sydney and Brisbane. Our office is located in Brisbane QLD. Techspan Australia is part of the Techspan Group.. ...

The invention is the use of a chelating agent with an ultrasonic device for the treatment of hair and other fibers. The treatment device includes an ultrasound generator, a comb device responsive to the generated ultrasonic waves, a reflector for reflecting the incident ultrasonic waves disposed on the distal end of the comb device, and a chelating agent preferably disposed within the treatment device. The treatment device efficaciously dispenses the chelating agent and ultrasonically treats the fiber.

Stolyar, S. V. Ion reduction in iron oxide and oxyhydroxide nanoparticles during ultrasonic treatment [Текст] / S. V. Stolyar, O. A. Bayukov, R. N. Yaroslavtsev, Yu. V. Knyazev, V. P. Ladygina, Yu. V. Gerasimova, R. S. Iskhakov // Advanced Powder Technology. - 2019. ...

In situ compatibilization of immiscible blends of PEN and thermotropic LCP was achieved by the ultrasonically-aided extrusion process. Ultrasonically-treated PEN underwent degradation, leading to a decrease of its viscosity. Viscosity of LCP was unaffected by ultrasonic treatment. Because of reduced viscosity ratio of PEN to LCP at high amplitude of ultrasonic treatment, larger LCP domains were observed in molding of the blends. LCP acted as a nucleating agent, promoting higher crystallinity in PEN/LCP blends. Ultrasonically-induced copolymer formation was detected by MALDI-TOF mass spectrometry in the blends. Ultrasonic treatment of 90/10 PEN/LCP blends improved interfacial adhesion in fibers spun at intermediate draw down ratios (DDR), improving their ductility. The lack of improvement in the mechanical properties of fibers spun at high DDR after ultrasonic treatment was attributed to the disturbance of interfacial copolymer by high elongation stresses. © 2011 Wiley Periodicals, Inc. J Appl ...

More and more companies in varying industries are trying to make the transition to low flow solutions. Bronkhorst developed a flow meter using ultrasonic wave technology for low flow rates

Shop Lowest Price on: Pyle PHLTB41BK - Personal Care | Pyle Health Ultrasonic Wave Rechargeable Electric Toothbrush with Automatic Charging Dock Base, Ultra Quiet Operation (Black) | Lab Tested and Proven to Improve Oral Hygiene Health Significantly Better Than Normal Brushing Easy-to-Use with Deep Clean Ability Safe for All Ages: Children, Teens and Adults Removes Food Particles and Destroys Plaque Below the Gum Line (3) Selectable Brush Intensity Modes: Normal, Whitening and Massage Proven to Reduce Plaque by 97% in a Single...

ULTRASONIC TREATMENT ENDODONTICE Prof.Dr.Eng.Gheorghe AMZA, Dr. Eng. Oana Elena AMZA, Dr.Eng.Zoia APOSTOLESCU Department of Materials Technology and Welding - University Politehnica of Bucharest Abstract:

The fact that the testing progressed from cleaning in controlled environments to utilization of the Morantz Ultrasonics equipment in two different hospitals in England verified that the results represent a real-world application rather than just theoretical data. It should also be noted that the field testing in the hospitals was sponsored by the National Health Service in the United Kingdom as a demonstration project that was part of the Technology Innovation Program, which focuses specifically on reducing health care facility acquired infections.. A History of Effective Cleaning. Ultrasonic cleaners use sound waves produced at frequencies higher than our ears can perceive. The process involves the use of a generator, called a transducer, in a water tank, which creates high-frequency sound waves. As the sound waves move through the liquid they create compression waves that tear the liquid apart, leaving behind many millions of microscopic voids or partial vacuum bubbles. (The technical name ...

The present invention provides a kind of ultrasonic communication system.The ultrasonic communication system can suppress the influence of environment noise, the influence of Doppler effect (doppler effect) and avoid allowing mobilephone terminal user to hear the sound that need not be listened to.After the encryption of store information is performed, the beacon (5) being arranged in sales territory (3) will control carrier wave, first carrier and the second carrier wave to be combined by following manner, so that the beacon message of a channel comprising store information is sent in the form of ultrasonic wave in sales territory (3).The mode refers to：During carrier signal is controlled, first carrier signal and the second carrier signal correspond to store information and exported for several times, also, under the form that the state of the carrier signal of at least one party is maintained in output first carrier signal and the second carrier signal.

BODIKA™ is a biotechnological device designed specifically to effectively, comfortably and with complete safely, treat the most occurring beauty obstacles that may present themselves in our body: localized fat and edematous fibrosclerotic cellulite (E.F.S.P.).. BODYKA™ uses the synergy of 3 actions: 1. sonication 2. sonophoresis 3. sonoporation. • SONICATION: acoustic ultrasonic waves cause the lysis - or breakage - of the adipocyte membranes. This is just the beginning… these frequencies enables to also benefit from the following reactions:. • SONOPHORESIS: the micro-vibrations caused by the acoustic ultrasonic waves in the skin tissue, exponentially increase the absorption of topical substances by the dermis and epidermis.. • SONOPORATION: The burst of gas filled microbubbles formed by the ultrasonic waves, cause the surrounding cells to receive the impact, that in turn affects their permeability thus, facilitating the penetration (entrance, arrival) of active principles.. ...

The Journal of Medical Ultrasonics provides a forum for the publication of papers documenting recent advances and new developments across the field of ultrasound in medicine and biology, encompassing both the medical and the ...

Industrial ultrasonics is an acoustic principle. Vibrations are turned into heat and thus the plastic material melts, which results in a homogeneous joint. Metals are joined through molecular bonding caused by the vibration. Let us explain the principles in detail and show you the large number of fascinating application options.. ...

Citation Machine™ helps students and professionals properly credit the information that they use. Cite your press release in Journal of Medical Ultrasonics format for free.

NASA Technical Reports Server (NTRS) 19820003989: Digital ultrasonics signal processing: Flaw data post processing use and description. A modular system composed of two sets of tasks which interprets the flaw data and allows compensation of the data due to. Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.

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Maretron WSO100 NMEA 2000reg Ultrasonics WindWeather StationWSO100 NMEA 2000reg Ultrasonic Wind Weather StationMaretrons outdoor weather station measures wind speed and direction, air temperature, barometric pressure, and relative humidity. T...

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Helps you gain a comprehensive understanding of ultrasonics. This title covers the... *Hitra in zanesljiva dostava, plačilo tudi po povzetju.*

It has long been non-destructively evaluated on weld joints of various pipes which are indispensable to most of industrial structures. Ultrasound evaluation has been used to detect flaws in welding joints, but some technical deficiencies still remain. Especially, ultrasound imaging on weld of elbow pipes has many challenging issues due to varying surface along circumferential direction. Conventional ultrasound imaging has particularly focused on ultrasonic wave propagation based on ray theory. This confines the incident angle and the position of an array transducer as well. Total focusing method (TFM), however, can provide not only high resolution images but also flexibility that enables to use ultrasonic waves to every direction that they can reach. This leads us to develop a method to get images of weld zone from an elbow part that curves. It is inevitable of each ultrasonic wave from the array transducer to transmit through different media and to be reflected from the boundary with angles ...

NiFe films were pulse electrodeposited on conductive copper substrates under galvanostatic mode with and without the presence of an ultrasonic field at different pulse current magnitudes and duty cycles. The optimum deposition condition was found to be at a current magnitude of 40 mA and a duty cycle of 50.00% under ultrasonic treatment. This deposition condition has significantly reduced the surface roughness from 39.01 ±1.1 nm to 6.96 ±1.1 nm and the spherical grain size in the range from 579.40 nm - 623.30 nm to 29.00 nm - 46.90 nm. On the other hand, the resistivity was reduced to 19.86 µωcm from 54.00 µωcm as the Ni content increased from 76.08% to 80.12 % for achieving good stoichiometry for NiFe thin films. Through the optimization study, the deposition current is observed to be the dominant factor in determining the single phase deposition of NiFe film whereas ultrasonic field and duty cycle significantly reduces the surface roughness and the spherical grain size, all of which ...

NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. The ultrasonic irradiation of para-nitrophenol, S(-II), and parathion is studied in aqueous solutions at 20 kHz and [...] 75 [...]. Para-nitrophenol was degraded primarily by denitration and secondarily by [...] radical attack to yield [...], [...], benzoquinone, hydroquinone, 4-nitrocatechol, formate and oxalate. These reaction products and the kinetic observations are consistent with a model involving high-temperature reactions of p-nitrophenol in the interfacial region of cavitation bubbles. The average effective temperature of the interfacial region surrounding the cavitation bubbles was estimated to be T [...] 800 K. Ultrasonic irradiation of S(-II) is studied in aqueous solutions over the pH range 7 - 12. The reaction of HS- with [...] is the principal pathway for the oxidation of S(-II) at pH [...] 10; the oxidation products are [...], [...], and [...]. Upon prolonged ...

We appreciate Ms. Ungers concerns. As a vice-president for the manufacturer of MIST® Therapy, she has an interest in positive representation of this form of low-frequency ultrasound.. The articles we cited -Uhlemann et als literature review, Voight et als meta-analysis, and Cullum et als Cochrane review - present mixed results. Uhlemann et al reviewed both high- and low-frequency ultrasound. Low-frequency ultrasound was differentiated according to the frequency of the sound wave and ranged from 30 kHz to 3-MHz in the study. The mode of ultrasound transmission was not identified consistently in the cited article. According to the authors, The quality of the studies done so far and of the evidence of the usefulness of ultrasound is poor. Nevertheless, high-frequency and low-frequency ultrasound may be reasonable options in the management of chronic wounds.. In Voight et als meta-analysis, the intensity of low-frequency ultrasound ranged from 20 to 30 kHz and the sound wave delivery media ...

A catheter apparatus for obtaining an image of internal surface characteristics of a vascular vessel is provided. The catheter apparatus comprises an tubular element adapted for insertion into the vascular vessel, a non-rotating acoustic waveguide disposed within the tubular element and coupled to a source of an ultrasonic signal located external to the vascular vessel, and an acoustically driven turbine. The turbine is responsive to the ultrasonic signal for directing the ultrasonic signal in a rotating pattern from a distal end of the acoustic waveguide through the tubular element at an angle relative to an axis of the vascular vessel. The ultrasonic signal includes a low frequency ultrasonic signal and a high frequency ultrasonic signal. The low frequency ultrasonic signal drives the acoustically driven turbine to direct the high frequency ultrasonic signal in the rotating pattern. The acoustically driven turbine comprises a plurality of turbine blades, and either an acoustic reflecting surface or an

Effect of Ultrasonic Stimulation on Mechanical Properties of Alginate Beads, P. He, X. Zhang, J. Zhang, Z. Ji, Y. Zhao, H. Xu, M. He, Z. Zhang, M. Zou, H. Chen, Y. Qiu, J. Yang and

Most of the known approaches to the synthesis of CF3-containing organic compounds suffer from serious drawbacks. For example the starting materials required for these methods are rather difficult to obtain, or they are fairly toxic and inconvenient to work with and methods for direct fluorination and trifluoromethylation do not always allow the introduction of the CF3-group at the required position of a molecule. An efficient and attractive regioselective synthesis of a series of novel pyrazoles containing the trifluromethyl moiety was achieved using Cu(OTf)2/Et3N as an efficient catalytic system under ultrasonic irradiation. Cu(OTf)2/Et3N catalyst showed a great advantage over all the investigated catalysts, and the ultrasonic irradiation method offered high yields of pyrazoles in short reaction time compared with classical conditions. gHMBC spectra of the product were used to rationalize the observed regioselectivity.

A damping device for a fluid flow meter is provided. The fluid flow meter is mountable on the exterior of a pipe to meter fluid flow traveling within the pipe. The flow meter has at least one ultrasonic sensor operable to transmit ultrasonic signals through a wall in a direction substantially normal to the pipe wall and into a fluid flow disposed within the pipe. The transmitted signals create secondary ultrasonic signals circumferentially traveling within the pipe wall at one or more frequencies. The damping device includes a tuned body attachable to the pipe wall at one or more contact points. The body has one or more resonant structural modes, each with a natural frequency, which natural frequencies are closely matched to the one or more frequencies of the secondary signals. The body is operable to dissipate energy upon excitation by the secondary signals.

An electromagnetic acoustic transducer (EMAT) is a unique probe that does not require a couplant or gel and also can usually generate or detect an ultrasonic wave into specimens across a small gap. It, therefore can be applied in a noncontact mode with a high degree of reproducibility. Especially stiffness of composites depends on layup sequence of CFRP(carbon fiber reinforced plastics) laminates. It is very important to evaluate the layup errors in prepreg laminates. A nondestructive technique can therefore serve as a useful measurement for detecting layup errors. This shear wave for detecting the presence of the errors is very sensitive. A decomposition model has been used in the interpretation and prediction of test results. Test results have been com pared with model data. It is found that the high probability shows between tests and the model utilized in characterizing cured layups of the laminates. Also a C-scan method was used for detecting layup of the laminates because of extracting fiber

The cavitation or ultrasonic treatment, also known as liposuction without surgery, is a non-invasive (no surgery) to shape the body and eliminate cellulite achieving highly satisfactory results in volume reduction and cellulite from the first sessions.. The technology of low-frequency ultrasound can treat selectively producing fat cells without damaging surrounding tissues. The system is very selective, ensuring that the goal is the subcutaneous adipose tissue and not another.. For years specialists have tried to selectively destroy fat cells irrespective of any surgical procedure. All investigations are based on the use of ultrasound and, in particular, trying to generate selectively one of its direct effects, called «cavitation» in the fatty tissue.. Cavitation is a physical phenomenon based on the effect of ultrasound in liquids, causing the creation of micro bubbles repeated large vacuum due to the rapid oscillation of pressure changes. The ultrasonic waves converge on the area being ...

A method of increasing the dissolution rate of titanium or titanium alloys in molten aluminum is disclosed that comprises placing a titanium rod into molten aluminum and applying ultrasonic energy to the rod. The ultrasonic energy enhances the dissolution of the titanium in the aluminum, homogenizes the molten alloy, and breaks up particles such as tial3 that form into a layer at the surface of t

It has been shown that nonlinear ultrasonics can be more sensitive to local incipient defects, such as a fatigue crack, than conventional linear ultrasonics. Therefore, there is an increasing interest in utilizing nonlinear ultrasonics for structural health monitoring and nondestructive testing applications. While the conditions, which are the necessary conditions that should be satisfied for the generation of nonlinear harmonic components, are extensively studied for distributed material nonlinearity, little work has been done to understand the necessary conditions at the presence of a localized nonlinear source such as a fatigue crack. In this paper, the necessary conditions of nonlinear ultrasonic modulation generation in a plate-like structure are formulated specifically for a localized nonlinear source. Then, the correctness of the formulated necessary conditions is experimentally verified using ultrasounds obtained from aluminum plates.

3E NDT LLC / INC. Access Plug Flange Inc. Acoustic Technology Group. Acuren Advanced Inspection Technologies. Advanced OEM Solutions. Advanced Test Equipment Rentals. A-Fab Co Inc. AIP. American Society for Nondestructive Testing. AMS Store and Shred LLC. Arrow-Tech Inc. Baugh & Weedon Ltd. Blatek Inc. Bruker Carestream NDT. Carl Zeiss Industrial Metrology. Chemetall US Inc. Circle Systems Inc. CM Diagnostics sp zoo. Creaform Inc. Dakota Ultrasonics. Danatronics. Dantec Dynamics GmbH. DURR NDT GmbH & Co KG. Echo Ultrasonics. Eclipse Scientific Eddyfi. EMWorks. ETher NDE Ltd. Extende. FlawTech. Foerster Instruments Inc. Fujifilm North America - NDT Materials and Equipment. GE Measurement & Control. Guided Ultrasonics Ltd. Guided Wave Analysis LLC. Gulmay Hamamatsu Corporation. HELLIER. Hocker Inc. IMASONIC. INETEC - Institute for Nuclear Technology. Innerspec Technologies Inc. Inspection Plug Strategies LLC. Inuktun Services Ltd. IPSI. Jentek Sensors Inc. JIREH Industries. Kinetic Solutions ...

The absorption spectrum of high-frequency sound (frequency f much larger than 1 MHz) in gases has traditionally been very difficult to measure because of the lack of a controllable high-frequency source with good acoustic coupling to the gas and of a sensitive detection method with fast response. Thus classical methods1 using ultrasonic transducers are usually limited to frequencies of , 1 MHz. The propagation of high-frequency waves (e.g., with f approaching a molecular relaxation frequency or wavelength approaching a collisional mean free path) remains an open question for many gases. The present experiment is a first attempt to measure ultrasonic absorption spectra of gases and mixtures near normal temperature and pressure conditions at frequencies up to tens of megahertz. Our technique is new in two respects: (1) it is all optical and hence is noncontact and applicable for corrosive or inaccessible samples. (2) It is a frequency-multiplexed technique relying on pulse-broadening measurement ...

In this paper, a full-field ultrasonic guided wave method is proposed to inspect a composite sandwich specimen made for an aircraft engine nacelle. The back skin/core interface of the specimen is built with two fabricated disbond defects (diameters of 12.7 mm and 25.4 mm) by removing areas of the adhesive used to bond the back skin to the core. A laser ultrasonic interrogation system (LUIS) incorporated with a disbond detection algorithm is developed. The system consists of a 1-kHz laser ultrasonic scanning system and a single fixed ultrasonic sensor to interrogate ultrasonic guided waves in the sandwich specimen. The interest area of 400 mm × 400 mm is scanned at a 0.5 mm scan interval. The corresponding full-field ultrasonic data is obtained and generated in the three-dimensional (3-D) space-time domain. Then, the 3-D full-field ultrasonic data is Fourier transformed and the ultrasonic frequency spectra are analyzed to determine the dominant frequency that is sensitive to the disbond defects. ...

Strain is created between scraper and file teeth by opposing muscle-generated shear forces (Josephson, 1985). During wing closure the scraper should move at velocities comparable to those of the wing, experiencing minor deceleration and acceleration each time a tooth is contacted and/or the scraper released. This condition is common in species with relatively short scrapers, which permit the teeth to be contacted in sequence (Montealegre-Z, 2005). However, in species where the scrapers width (see Results) and flexibility is greater, it may move at velocities higher or lower than that of the wing. We therefore distinguish scraper velocity (SV) from CWV, and argue below that for katydid species producing pure tones and extreme ultrasonic frequencies, a modified form of stridulation occurs in which scraper and wing velocities are intermittently uncoupled (in contrast to the escapement model). Our hypothesis predicts that SV should be higher than CWV during sound production in species using extreme ...

Title:Lemon Juice Mediated Reaction under Ultrasound Irradiation: Synthesis of Indolofuroquinoxalines as Potential Anticancer Agents. VOLUME: 19 ISSUE: 8. Author(s):Gutta Lakshmi Prasanna, Bodapati Veera Durga Rao, Alugubelli Gopi Reddy, Mandava V. Basaveswara Rao* and Manojit Pal*. Affiliation:Department of Chemistry, Krishna University, Machilipatnam-521001, Andhra Pradesh, Department of Chemistry, Krishna University, Machilipatnam-521001, Andhra Pradesh, Department of Pharmaceutical Chemistry, Sana College of Pharmacy, Kodad - 508206, Department of Chemistry, Krishna University, Machilipatnam-521001, Andhra Pradesh, Dr. Reddys Institute of Life Sciences, University of Hyderabad Campus, Hyderabad 500046. Keywords:Lemon juice, ultrasound, indolofuroquinoxaline, anticancer, MCF7, antitumor.. Abstract:. Background: A non-hazardous synthetic methodology has been developed for the preparation of compounds based on indolofuroquinoxaline framework. Lemon juice that is known to play the role of a ...

Ag-TiO2, Cu-TiO2 and Ni-TiO2 were prepared by sonication. The interactions of Ti-gel with silver, copper and nickel ions under ultrasound irradiation are very different, although these ions can be dispersed very well in titania. The results of EDXA and XRD analysis indicate that Ti-gel does not react with AgCl and crystallizes unaffectedly to form rutile. M(OH)2 (M = Cu and Ni), on the other hand, favors polycondensation with Ti-gel and affects the crystallization of Ti-gel. CuO favors stabilization of the anatase phase. Ni2+ ions tend to incorporate more easily into titania than Cu2+ ions do when the samples are calcined. TEM, and BET were also used to characterize the samples.

A method for determining, through an interposing medium, the mechanical properties of a solid having a surface, including transmitting a first ultrasonic wave along a transmission path from a first location through the interposing medium, along the surface and from the surface through the interposing medium to a second location; measuring the travel time of the first wave along the transmission path; measuring the thickness of the interposing medium; measuring the acoustic velocity of the interposing medium; and calculating the acoustic velocity in the solid based on the distance between the locations, the thickness of the interposing medium and the acoustic velocity in the interposing medium.

The level of bacterial colonization of the operative wounds in performance of the reconstructive operations on the vessels equal to 10(3) bacteria in 1 g of tissue is critical for the development of suppuration. The use for treating the wounds of the low-frequency ultrasound and gentamycin solution in 17 patients permitted to reduce the critical level of bacterial wound colonization, and due to this, to decrease the incidence of the purulent-septic complications from 35.7 to 5.9%. In 14 patients after the operations for late reocclusion performed in presence of cicatrices of the tissues, there was no wound suppuration.

TY - JOUR. T1 - Sonochemical production of nanoparticle metal oxides for potential use in dentistry. AU - Stubbing, James. AU - Brown, Judith. AU - Price, Gareth. PY - 2017/3. Y1 - 2017/3. N2 - Two types of ultrasonic instruments used in dentistry have been compared with a sonochemical horn for the production of copper oxide and zinc oxide nanoparticles. The nanoparticles can be produced from benign reagents using dental instruments as the source of sonochemical enhancement. The process has been operated in resin models of teeth in a preliminary exploration of the potential of the method for enhancing procedures such as root canal surgery. The techniques is potentially useful but further work is needed for a full assessment of using in-situ generated nanoparticles as an aid in disinfection during some types of dental surgery.. AB - Two types of ultrasonic instruments used in dentistry have been compared with a sonochemical horn for the production of copper oxide and zinc oxide nanoparticles. The ...

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Ng GY, Fung DT. This study evaluated the effects of ultrasound intensity on the ultrastructural morphology of Achilles tendon healing. Twenty Sprague-Dawley rats with surgically hemi-transected Achilles tendons were randomly assigned into four groups of 0, 0.5, 1.2 and 2 W/cm(2) for ultrasound treatment, with five rats in each group. The treatments were administered with 1 MHz continuous ultrasound daily starting from day 5 after injury. On day 30, ultrathin slides of the Achilles tendons were prepared and examined with transmission electron microscopy. Results showed that the mean collagen fibril size of all treatment groups was higher than the control. There was no significant difference in the collagen fibril size among the treatment groups.. Therapeutic ultrasound can enhance the maturation of collagen fibrils of repairing tendons, and is not dependent on the intensity of ultrasound applied.. Ultrasound Med Biol. 2007 Nov;33(11):1750-4. Link to Abstract. ...

This study evaluated the effects of ultrasound intensity on the ultrastructural morphology of Achilles tendon healing. Twenty Sprague-Dawley rats with surgically hemi-transected Achilles tendons were randomly assigned into four groups of 0, 0.5, 1.2 and 2 W/cm2 for ultrasound treatment, with five rats in each group. The treatments were administered with 1 MHz continuous ultrasound daily starting from day 5 after injury. On day 30, ultrathin slides of the Achilles tendons were prepared and examined with transmission electron microscopy. Results showed that the mean collagen fibril size of all treatment groups was higher than the control (p < 0.05). There was no significant difference in the collagen fibril size among the treatment groups. These findings suggest that therapeutic ultrasound can enhance the maturation of collagen fibrils of repairing tendons, and this was not dependent on the intensity of ultrasound applied. (E-mail: [email protected] ...

Ultrasonic extraction of pine seed polysaccharides was studied by using single factor experiment and orthogonal method. It was concluded that the optimal condition of extraction were 100 g degreased pine seed powder, 90 ℃ extraction temperature, 45 ∶1 (mL ∶g) solvent to solute weight ratio, 35 min extraction duration, 800 W ultrasonic power. Under this condition, the yield of polysaccharides is 9.74 %. Compared with direct-heating extraction, ultrasonic extraction can shorten the extracting time, and improve yield of pine seed polysaccharides.

British engineers are exploring the possibility of a real-life sonic screwdriver.. Bruce Drinkwater, professor of ultrasonics at Bristol University, doesnt expect to make a working model particularly soon. But hes working on at least proving the concept is possible.. The idea is to build on existing work using ultrasonic forcefields to separate out diseased cells from healthy cells. Engineers are also already experimenting with using ultrasonic waves to move small objects.. The theory is that ultrasound could be used to simulate the mechanics of a real screwdriver. A rotating forcefield could perform the function of a head, while spinning ultrasonic waves at high speed could create a tornado-like force to turn the screws.. As is often the case with physics, it seems the logic behind the system is sound (so to speak), but generating the necessary force might be more troublesome.. In the TV series, the sonic screwdriver was initially portrayed as a sound wave-based tool for opening locks, along ...

TY - JOUR. T1 - Study the effect of ultrasonic irradiation and surfactant/fe ions weight ratio on morphology and particle size of magnetite nanoparticles synthesised by co-precipitation for medical application. AU - Meibod, S. Saloomeh Azimipour. AU - Pourafshary, Peyman. AU - Hosseini, Hamid Reza Madaah. PY - 2010/10/21. Y1 - 2010/10/21. N2 - A biocompatible ferrofluid have been prepared by coprecipitation of FeCl 2.4H 2O and FeCl 3.6H 2O under ultrasonic irradiation and with NaOH as alkaline agent. Cystein was also used as capping agent in the solution. Magnetic properties of the produced ferrofluid were then determined by VSM test and magnetite nanoparticles were characterized by XRD and TEM techniques. The effect of surfactant to Fe ion weight ratio was also studied during this project by using two different amount of Dextran. Results showed the presence of a biocompatible superparamagnetic ferrofluid including magnetite nanoparticles with particle size ranging under 20 nm. The increase in ...

Therapeutic ultrasound is widely employed in clinical applications but its mechanism of action remains unclear. Here we report prompt fluidization of a cell and dramatic acceleration of its remodeling dynamics when exposed to low intensity ultrasound. These physical changes are caused by very small strains (

Title:Lemon Juice as a Biocatalyst Under Ultrasound Irradiation: Synthesis and Pharmacological Evaluation of 2-amino 1,3,4-thiadiazoles. VOLUME: 20 ISSUE: 11. Author(s):Malavattu G. Prasad, Chapala V. Lakshmi, Naresh K. Katari* and Manojit Pal*. Affiliation:Department of Chemistry, GITAM Deemed to be University, HTP Campus, Rudraram, Medak, Telangana-502 329, Department of Chemistry, GITAM Deemed to be University, HTP Campus, Rudraram, Medak, Telangana-502 329, Department of Chemistry, GITAM Deemed to be University, HTP Campus, Rudraram, Medak, Telangana-502 329, Dr Reddys Institute of Life Sciences, University of Hyderabad Campus, Hyderabad-500046. Keywords:1 3 4-thiadiazole, ultrasound, lemon juice, PEG-400, cytotoxicity, SIRT1.. Abstract:Background: The 2-amino 1,3,4-thiadiazole framework has attracted considerable interest because of its prevalence in compounds possessing a wide range of pharmacological properties including anticancer/antitumor activities. Though a number of methods have ...

Wyshelesky, A.; Iakobishvili, Z.; Matz, I.; Golovchiner, G.; Vaturi, M.; Siegel, R.J.; Birnbaum, Y., 2001: There is synergism between high-intensity, low-frequency ultrasound and streptokinase but not with eptifibatide, heparin, and aspirin. Differential effects on fresh and aged blood clots. An in vitro study

Microbubbles are microspheres containing a shell-encapsulated gas, which are used as intravascular ultrasound contrast agents in diagnostic echocardiography (1). Although microbubbles may vary in their shell composition, all expand and contract (vibrate) when exposed to specific frequencies of ultrasound at appropriate acoustic pressures (2). Increasingly, bioeffects caused by ultrasound-induced microbubble vibration in vivo have been harnessed for therapeutic gain. Ultrasound-induced microbubble vibrations enhance gene delivery and thrombolysis (sonothrombolysis), and transiently open the normally impervious blood-brain barrier in pre-clinical models (3-5). In the realm of gene delivery, ultrasound-targeted microbubble vibrations that culminate in microbubble destruction hold the promise of a noninvasive, nonimmunogenic, nonviral means of delivering genes to a target via simple intravenous injection. This approach offers an ideal theranostic tool, using navigation of the ultrasound beam to ...

0085]FIG. 1 is a block diagram showing an arrangement for a situation where the ultrasonic diagnostic apparatus 11 of this preferred embodiment is used to inspect the tissue and property of a vascular wall. An ultrasonic probe 13, connected to the ultrasonic diagnostic apparatus 11, is held in close contact with the body surface 2 of a person under test and transmits an ultrasonic wave into a body tissue inside an extravascular tissue 1. The transmitted ultrasonic wave is reflected by a blood vessel 3 and blood 5, scattered, and only a portion of it comes back to, and is received as an echo (i.e., the ultrasonic reflected wave) by, the ultrasonic probe 13. The ultrasonic diagnostic apparatus 11 performs analysis and computations on the received signal, thereby acquiring the shape information and mobility information of the vascular anterior wall 4. Also, a blood pressure manometer 12 is connected to the ultrasonic diagnostic apparatus 11 such that data about the blood pressure values of the ...

Principal Investigator：Watanabe Yoshiaki, Project Period (FY)：2016-04-01 - 2018-03-31, Research Category：Grant-in-Aid for Challenging Exploratory Research, Research Field：Biomedical engineering/Biomaterial science and engineering

ABSTRACT: Bioethanol (fuel ethanol derived through fermentation) is now the leading biofuel alternative to fossil-based liquid transportation fuels. Current production is dominated by U.S. corn-based and Brazilian sugarcane-based processes. However, more sustainable future bioethanol production needs to be based on non-food substrates that use lignocellulosic biowastes. The brewing and distilling industry sectors are uniquely placed to exploit the conversion of lignocellulose to bioethanol, through the utilization of spent grains. Bioconversion of brewers spent grains (BSG) to fuel alcohol represents an attractive but challenging opportunity for sustainable bioethanol production. In addition to the technological and scientific challenges in bioethanol production from spent grains, there are also constraints relating to economics and energy balances. For example, enzyme costs need to be lowered, particularly considering cellulolysis of feedstock. Any innovations to decrease cellulase enzyme ...

Tachibana and Tachibana (4) first described the impact of a nonimaging low-frequency ultrasound transducer and microbubbles on the effectiveness of fibrinolytic agents. These investigators observed, in an in vitro model, that the combination of urokinase, low-frequency ultrasound, and microbubbles resulted in an increased rate of fibrinolysis when compared with urokinase plus ultrasound or urokinase alone. In vitro studies have also indicated that cavitation plays an important role in ultrasound-induced thrombolysis (3). These cavitation thresholds have been shown to be lowered in the presence of microbubbles. Our study documents the importance of cavitation for producing thrombolysis with ultrasound in vivo, in that only when we applied the cavitation-producing high-MI impulses did we achieve a high degree of success in recanalizing the acutely thrombosed grafts.. Ultrasound, used alone or in combination with microbubbles, has potentiated the clinical effect of fibrinolytic agents in the ...

Previous animal studies have proven the feasibility of enhancing collateral function by delivery of angiogenic factors to the myocardium [1, 2, 22-24]. Intramyocardial gene transfer allows nonviral vector delivery directly to the target area. Plasmid delivery methods are relatively safer, but their transfection efficiencies are low even after direct injection. Recently, researchers have begun to use microbubble contrast agents as a diagnostic imaging tool and as a gene carrier [11-14]. Some studies have shown that ultrasound, used either alone or in combination with microbubbles, can delivery of genes to specific tissues, including the myocardium and increase gene expression [25-28].. Systemic administration of HGF by ultrasound-targeted microbubble destruction for therapeutic angiogenesis has been demonstrated to be effective [3-6]. More, US/MB has been used to enhance the delivery of HGF into the skeletal muscle by direct intramuscular injection of a naked plasmid into the rat hind limbs [27]. ...

342. E. Hojman, T. Chaigne, O. Solomon, S. Gigan, E. Bossy, Y. C. Eldar and O. Katz, Combining Speckles and Compressed-Sensing for Super-Resolution Photoacoustics, Neural Information Processing Systems (NIPS), December 2017.. 341. Q. Qu, Y. Zhang, J. Wright and Y. C. Eldar, Convolutional Phase Retrieval, Neural Information Processing Systems (NIPS), December 2017.. 340. S. Rini, L. Barletta, E. Erkip and Y. C. Eldar, A General Framework for MIMO Receivers with Low-Resolution Quantization, IEEE Information Theory Workshop (ITW), November 2017.. 339. T. Chernyakova, A. Aberdam, E. Bar-Ilan and Y. C. Eldar, Spatial-Temporal Plane-Wave Image Formation with Sparse Uniform ReSampling, IEEE International Ultrasonics Symposium (IUS), September 2017.. 338. O. Solomon, A. Bar-Zion, D. Adam and Y. C. Eldar, Fast and Background Free Super-Resolution Ultrasound Angiography, IEEE International Ultrasonics Symposium (IUS), September 2017.. 337. R. JG van Sloun, O. Solomon, Y. C. Eldar, H. Wijkstra ...

B. CARLIN `)une 21, 1966 ULTRASONIC PULSE-ECHO APPARATUS FOR INTERNAL EXPLORATION Filed Feb. 6, 1965 mmbbl Unted States Patent() ULTRASONIC PULSE-ECHO APPARATUS FOR INTERNAL EXPLORATION lBenson Carlin, Fair Lawn, NJ., assiguor, by mesne assignments, to Air-Shields, Enc., Hatboro, Pa., a corporation of Delaware Filed Feb. 6, 1963, Ser. No. 256,769 8 Claims. (Cl. 7S-67.8) body. One important advantage of ultrasonics is -that it i yis non-destructive and free of the hazards incident to the use of X-ray or Gamma ray examination. Unlike X-ray, ultrasonics is also sensitive to changes in elasticity of tissue as Well as to changes in density. Further, pulse methods allow the depth from which an echo is reflected `to be known, so that objects examined are also located in depth. l In the ultrasonic exploratory techniques, a series of very short ultrasonic pulses is projected ina narrow, -straight beam in the direction to be viewed. For this purpose, a transducer is placed on the skin and coupled thereto ...

A little about me, my name is Doug Napier and I am the JewelryMonk. I have been making jewelry for close to 30 years, I have traveled all over the country, and out of the country, focusing on making jewelry in a manufacturing setting. I am experienced in all facets of jewelry making from bench jeweler and technical modelmaking to production troubleshooting and Computer Design (CAD). Along my journey, I have learned many tips and tricks, and am more than happy to pass along anything I have learned. (I cant take it with me). I believe I have been given a great gift when it comes to making jewelry, and I would like to be a good steward and pass it along to anyone who is hungry and wants to learn.. ...

Locate Weld Monitors and Controllers suppliers, manufacturers & distributors in Connecticut. Interactive map of Connecticut provided.

This paper reported the development of a multifunctional contrast agent for near infrared (NIR) fluorescent/ultrasonic bimodal imaging and gene delivery. CuInS2-ZnS alloyed quantum dots (ZCIS QDs) were coated with polyethyleneimine (PEI) to complex plasmid DNA (pDNA), followed by adsorption onto the surface of microbubbles (MBs) generated from the surfactant mixture of Span 60 and Tween 80. It was found that the obtained composite agent of MBs@QDs@PEI/pDNA had excellent capability to enhance both ultrasound and fluorescence imaging. In addition, an in vitro cell experiment showed that pDNA could be released from MBs@QDs@PEI/pDNA and internalized by target HeLa cells to realize a relatively high transfection efficiency by ultrasound-targeted microbubble destruction. Furthermore, the cytotoxicity, immune toxicity and histological evaluation showed that MBs@QDs@PEI/pDNA had a good biocompatibility for medical application. Therefore, such a multifunction agent could operate as a promising platform ...

Hypoxia-inducible factor 1α (HIF-1α) plays a critical protective role in ischemic heart disease. Under normoxic conditions, HIF-1α was degraded by oxygen-dependent prolyl hydroxylase-2 (PHD2). Gene therapy has become a promising strategy to inhibit the degradation of HIF-1α and to improve cardiac function after ischemic injury. However, conventional gene delivery systems are difficult to achieve a targeted and localized gene delivery into the ischemic myocardia. Here, we report the localized myocardial delivery of shRNA against PHD2 through ultrasound-targeted microbubble destruction (UTMD) for protection the heart from acute myocardial infarction ...

1) A method for controlling microorganisms in a food material, comprising a step of subjecting a food material immersed in a sterilizing solution to repeated treatment with negative pressure and ordinary pressure and/or a step of subjecting a food material immersed in a sterilizing solution to resonant ultrasonication. (2) The method according to (1), comprising performing the step of subjecting a food material immersed in a sterilizing solution to resonant ultrasonication, after or simultaneously with the step of subjecting the food material immersed in the sterilizing solution to repeated treatment with negative pressure and ordinary pressure. (3) The method according to (1) or (2), wherein the food material immersed in the sterilizing solution is subjected to resonant ultrasonication while the food material is rotated. (4) The method according to any one of (1) to (3), wherein treatment with negative pressure is performed by suction at 0.002 MPa to 0.06 MPa. (5) The method according to any ...

More than 1800 gene therapy clinical trials worldwide have targeted a wide range of conditions including cancer, cardiovascular diseases, and monogenic diseases. Biological (i.e. viral), chemical, and physical approaches have been developed to deliver nucleic acids into cells. Although viral vectors offer the greatest efficiency, they also raise major safety concerns including carcinogenesis and immunogenicity. The goal of microbubble-mediated sonoporation is to enhance the uptake of drugs and nucleic acids. Insonation of microbubbles is thought to facilitate two mechanisms for enhanced uptake first, deflection of the cell membrane inducing endocytotic uptake, and second, microbubble jetting inducing the formation of pores in the cell membrane. We hypothesized that ultrasound could be used to guide local microbubble-enhanced sonoporation of plasmid DNA. With the aim of optimizing delivery efficiency, we used nonlinear ultrasound and bioluminescence imaging to optimize the acoustic pressure, ...

Engineering brown fat into skeletal muscle using ultrasound-targeted microbubble destruction gene delivery in obese Zucker rats: Proof of concept design IUBMB Life 2017 [BMP7 ...

Engineering brown fat into skeletal muscle using ultrasound-targeted microbubble destruction gene delivery in obese Zucker rats: Proof of concept design IUBMB Life 2017 [BMP7 ...

TY - JOUR. T1 - Therapeutic arteriogenesis by ultrasound-mediated VEGF165 plasmid gene delivery to chronically ischemic skeletal muscle. AU - Leong-Poi, Howard. AU - Kuliszewski, Michael A.. AU - Lekas, Michael. AU - Sibbald, Matthew. AU - Teichert-Kuliszewska, Krystyna. AU - Klibanov, Alexander L.. AU - Stewart, Duncan J.. AU - Lindner, Jonathan. PY - 2007/8. Y1 - 2007/8. N2 - Current methods of gene delivery for therapeutic angiogenesis are invasive, requiring either intraarterial or intramuscular administration. A noninvasive method of gene delivery has been developed using ultrasound-mediated destruction of intravenously administered DNA-bearing carrier microbubbles during their microcirculatory transit. Here we show that chronic ischemia could be markedly improved by ultrasound-mediated destruction of microbubbles bearing vascular endothelial growth factor-165 (VEGF165) plasmid DNA. Using a model of severe chronic hindlimb ischemia in rats, we demonstrated that ultrasound mediated ...

Current devices utilized in dental operatories can create aerosols, with ultrasonics and high- speed handpieces producing more airborne contamination than other commonly utilized devices. Because of this, CDC guidelines for prevention of transmission of the novel Coronavirus SARS -CoV-2 includes recommendations to decrease high speed handpiece activity with particular attention to limiting the use of ultrasonic devices in the dental hygiene operatory. Public health benefits associated with adjunctive use of the diode laser for bacterial reduction in the sulcular epithelium are well documented with no aerosol production. ...

In this proof of concept study, the advantageous properties of both H(2)O(2)/NaHCO(3)/imidazole/Mn(TPP)OAc oxidation system and MOPyrroNTf(2) ionic liquid have been combined under ultrasonic irradiation to give an exceptionally favorable environment for Mn(TPP)OAc catalyzed olefin oxidations. The results reveal the crucial role played by the ultrasonic irradiations that influence drastically the oxidation process. In MOPyrroNTf(2) and under ultrasonic irradiation, the mechanism probably involves an oxo-manganyl intermediate at the expense of the classical bicarbonate-activated peroxide route.

TY - JOUR. T1 - Preliminary Observations on the Spatial Correlation Between Short-Burst Microbubble Oscillations and Vascular Bioeffects. AU - Chen, Hong. AU - Brayman, Andrew A.. AU - Evan, Andrew P.. AU - Matula, Thomas J.. PY - 2012/12/1. Y1 - 2012/12/1. N2 - The objective of this preliminary study was to examine the spatial correlation between microbubble (MB)-induced vessel wall displacements and resultant microvascular bioeffects. MBs were injected into venules in ex vivo rat mesenteries and insonated by a single short ultrasound pulse with a center frequency of 1 MHz and peak negative pressures spanning the range of 1.5-5.6 MPa. MB and vessel dynamics were observed under ultra-high speed photomicrography. The tissue was examined by histology or transmission electron microscopy for vascular bioeffects. Image registration allowed for spatial correlation of MB-induced vessel wall motion to corresponding vascular bioeffects, if any. In cases in which damage was observed, the vessel wall had ...

The ultrasonic cleaner is a microprocessor-controlled device that uses ultrasonic or high frequency sound waves to clean jewelry and other delicate items. The vibration of ultrasonic wave in liquid will cause strong cavitation and emulsification. Millions of cavitation bubbles can be generated per second. Under the action of sound pressure, these bubbles are rapidly produced and continuously violent blasting, producing strong impact and suction force to remove stubborn dirt and kill bacteria and viruses. Built-in powerful transducers can strengthen the ultrasonic power and make superior cleaning outcome.. It is utilization of digital program in ultrasonic cleaner to control the unit, according to the quantity and condition of the items to be cleaned to choose a working cycle time. As a result, it is more convenient and efficient than hand wash, steam cleaners, high pressure water jet cleaning or other machines. Advanced Brushed Stainless-Steel 304 Cleaning Tank to avoid corrosion water stain and ...

Read Extreme Learning Machine Framework for Risk Stratification of Fatty Liver Disease Using Ultrasound Tissue Characterization, Journal of Medical Systems on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

We have shown previously that the physical properties of myocardium in dogs can be characterized with quantitative ultrasonic integrated backscatter and that interrogation of the tissue with ultrasound can delineate cardiac cycle-dependent changes in ultrasonic backscatter in normal tissue that disappear with ischemia and reappear with reperfusion if functional integrity is restorable. To determine whether this approach can be applied to man, we implemented an automatic gain compensation and continuous data acquisition system to characterize myocardium with quantitative ultrasonic backscatter and to detect cardiac cycle-dependent changes in real time. We developed a two-dimensional echocardiographic system with quantitative integrated backscatter imaging capabilities for use in human subjects that can automatically differentiate ultrasonic signals from blood as opposed to those obtained from tissue and adjust the slope of the gain compensation appropriately. Real-time images were formed from a ...

OBJECTIVE: The objective of this study was to explore the safety and efficacy of a potential new treatment method that utilizes a non-invasive application of ultrasound energy to induce exocytosis of insulin from pancreatic beta cells. Amperometric measurements offer confirmation of secretion as well as data that could lead to optimization in controlling the release via ultrasound application. Finite-element modeling studies provide information regarding the thermal and mechanical effects of therapeutic ultrasound in the human abdomen. METHODS: Initial experiments focused on detecting exocytotic secretions from pancreatic beta cells in response to ultrasound stimulation using carbon fiber amperometry. Neurotransmitters, specifically dopamine and its precursor L-DOPA, were loaded into secretory vesicles in beta cells and co-released with insulin. Cells were stimulated at 800 kHz and an intensity of 0.5 W/cm2 for 5 s, 10 s, and 15 s at various time intervals. Secretion of insulin was detected by proxy

Ultrasound-Assisted Synthesis of Nanostructured Oxide Materials: Basic Concepts and Applications to Energy: 10.4018/978-1-5225-3903-2.ch007: This chapter is focused on the use of high intensity ultrasound for the preparation of nanostructured materials with an emphasis on recent prominent examples

TY - JOUR. T1 - Ultrasound tissue displacement imaging with application to breast cancer. AU - Chen, E. J.. AU - Adler, R. S.. AU - Carson, P. L.. AU - Jenkins, William Kenneth. AU - OBrien, W. D.. PY - 1995/1/1. Y1 - 1995/1/1. N2 - A method for quantitative imaging of internal tissue motion based on speckle tracking is described. Tissue displacement images from eight patients with sonographically apparent breast masses are used to illustrate the technique. The local displacement response of tissues surrounding malignant and benign breast masses is compared, testing the hypothesis that altered mechanical properties may result in motion signatures for many soft tissue tumors relative to their host tissue. In addition, the potential or anticipated influence of various biological and physical factors on tissue motion response is discussed.. AB - A method for quantitative imaging of internal tissue motion based on speckle tracking is described. Tissue displacement images from eight patients with ...

PURPOSE: To evaluate the ultrasound tissue elasticity imaging by comparison to multimodality imaging using image fusion with Magnetic Resonance Imaging (MRI) and conventional grey scale imaging with additional elasticity-ultrasound in an experimental

Dog intelligence is the ability of the dog to perceive information and retain it as knowledge in order to solve problems. Dogs have been shown to learn by inference. A study with Rico showed that he knew the labels of over 200 different items. He inferred the names of novel items by exclusion learning and correctly retrieved those novel items immediately. He also retained this ability four weeks after the initial exposure. Dogs have advanced memory skills. A study documented the learning and memory capabilities of a border collie, Chaser, who had learned the names and could associate by verbal command over 1,000 words. Dogs are able to read and react appropriately to human body language such as gesturing and pointing, and to understand human voice commands. After undergoing training to solve a simple manipulation task, dogs that are faced with an insolvable version of the same problem look at the human, while socialized wolves do not. Dogs demonstrate a theory of mind by engaging in ...

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Ultrasound is a therapeutic modality that is used by physical therapists to help reduce local tissue pain and inflammation. Ultrasound is applied using a round-headed wand or probe that is placed in direct contact with the patients skin. Ultrasound gel is used on all surfaces of the ultrasound head to reduce friction and assist in the transmission of the ultrasonic waves. For the purposes of treatment for CIPN, the ultrasound will be applied for 5 minutes to each limb (right toes, left toes, right fingers, left fingers) at frequency of 3.0 megahertz (MHz) and an intensity of 0.7-0.8 watts per cm2.. (For CIPN, the ultrasound will be administered at a lower intensity in order to avoid a heating effect on the tissues.) ...

The method and device of the present invention for wound treatment with a combination of laser and ultrasound waves comprises a probe to produce a laser beam and transducer to produce ultrasonic waves. The ultrasonic transducer has tip with a distal end comprising a radiation surface. A liquid is directed to the radiation surface wherein an directed atomized particle spray of the liquid is created upon contact of the liquid with the radiation surface. The laser beam and spray directed to the wound from at least 0,1 inches transmits ultrasound waves as well as particles and has an radiation, irrigation, mechanical cleansing, liquid energizing and bactericide effect on the wound.

The problem of simulation of an industrial explosion for a vertically inhomogeneous medium has been considered in a general form. An algorithm to transform a wave field to a pulsed form, which uses a priori information about the space distribution of charges and delay times in a quarry explosion, is proposed. The distributed short-delay explosion is considered as a set of point sources of one type located at the same depth under the surface with an arbitrary distribution on the plane. Each source is characterized by its own temporal function and its own delay time. Recording a seismic signal from an explosion at the far zone profile, that is, at distances much longer than its typical size, is considered. The process of formation of a seismogram from a distributed explosion at the profile is investigated, and an algorithm to reduce it to the pulsed form is proposed. In the spatial-time domain, a pulsed seismogram is obtained after the 2D inverse Fourier transform. The transformation function is ...