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Items from 1 to 20 out of 9,498,039 results

article

Direct contact ultrasound for fouling control and flux enhancement in air-gap membrane distillation

Osamah Naji, Raed A. Al-juboori, Les Bowtell, Alla Alpatova, more

Ultrasonics Sonochemistry > 2020 > 61 > C

Air Gap Membrane distillation (AGMD) is a thermally driven separation process capable of treating challenging water types, but its low productivity is a major drawback. Membrane fouling is a common problem in many membrane treatment systems, which exacerbates AGMD’s low overall productivity. In this study, we investigated the direct application of low-power ultrasound (8–23 W), as an in-line cleaning...

article

Sonochemical synthesis, characterization and application of PrVO4 nanostructures as an effective photocatalyst for discoloration of organic dye contaminants in wastewater

Rozita Monsef, Maryam Ghiyasiyan-Arani, Omid Amiri, Masoud Salavati-Niasari

Ultrasonics Sonochemistry > 2020 > 61 > C

In the current research, various conventional chemical preparation methods without ultrasound aid (precipitation, microwave, and hydrothermal) were compared with sonochemical procedure and were performed for providing of PrVO ₄ nanostructures using Schiff-base ligands. The small size products with monodisperse particles (~39 nm) optimized by sonochemical fabrication method and using H ₂ acacpn ligand...

article

Effect of sonication time on the evaporation rate of seawater containing a nanocomposite

Mohammad Mustafa Ghafurian, Zohreh Akbari, Hamid Niazmand, Roya Mehrkhah, more

Ultrasonics Sonochemistry > 2020 > 61 > C

Sonication time has a significant contribution to the stability and properties of nanofluids (mixtures of nanoparticles and a base fluid). Finding the optimum sonication time can help to save energy and ensure optimal design. The present study deals with the sonication time effect on the evaporation rate of seawater containing a nanocomposite (i.e., a mixture of multi-walled carbon nanotubes and graphene...

article

Molecular regulatory mechanisms of Escherichia coli O157:H7 in response to ultrasonic stress revealed by proteomic analysis

Jiao Li, Xinglin Zhang, Muthupandian Ashokkumar, Donghong Liu, more

Ultrasonics Sonochemistry > 2020 > 61 > C

The antimicrobial effects of ultrasonic filed have been studied for years at the phenotypic level, but there is little research to reveal the molecular regulatory mechanisms underlying the phenotypes. In this study, isobaric tag for relative and absolute quantification (iTRAQ) proteome was applied to analyze the regulatory networks of Escherichia coli O157:H7 in response to ultrasonic stress in whole-genome...

article

Ultrasonic-assisted micro solid phase extraction of arsenic on a new ion-imprinted polymer synthesized from chitosan-stabilized pickering emulsion in water, rice and vegetable samples

Rahil Jalilian, Mahtab Shahmari, Alireza Taheri, Kamyar Gholami

Ultrasonics Sonochemistry > 2020 > 61 > C

Pickering emulsion polymerization has been employed for the Ultrasonic assisted-micro solid phase extraction (UA-µSPE) of ultra trace arsenic species by a new magnetic ion imprinted polymer (MIIP) prior to hydride generation atomic absorption spectrometry. 2-acetyl benzofuran thiosemicarbazone (2-ABT) as a new chelating agent and core- shell hydrophobic magnetic nanoparticles was synthesized and the...

article

Facile synthesis and electrochemical properties of a novel Ni-B/TiC composite coating via ultrasonic-assisted electrodeposition

Baosong Li, Weiwei Zhang

Ultrasonics Sonochemistry > 2020 > 61 > C

A novel Ni-B/TiC composite coating was synthesized by ultrasonic-assisted direct current electrodeposition. Ultrasonic technology was adopted to prevent the agglomeration of nanoparticle, improve the structure and corrosion resistance, using an ultrasonic bath at frequency 40 KHz and acoustic power 300 W. The influences of current density and deposition time on its structure and electrochemical behaviors...

article

Sonochemical synthesis of Dy3+ substituted Mn0.5Zn0.5Fe2−xO4 nanoparticles: Structural, magnetic and optical characterizations

M.A. Almessiere, Y. Slimani, A. Demir Korkmaz, S. Güner, more

Ultrasonics Sonochemistry > 2020 > 61 > C

Mn _0.5 Zn _0.5 Dy _x Fe _2−x O ₄ (x ≤ 0.03) nanoparticles (NPs) were fabricated by using Ultrasonic irradiation using UZ SONOPULS HD 2070 ultrasonic homogenizer (frequency of 20 kHz and power of 70 W). Structural and morphological analyses were performed via XRD (X-ray powder diffractometer), TEM (Transmission electron microscopy) and SEM (Scanning electron microscopy). XRD presented the formation of...

article

Ultrasound-promoted synthesis of γ-graphyne for supercapacitor and photoelectrochemical applications

Wen Ding, Mingxuan Sun, Zihan Zhang, Xiaojing Lin, more

Ultrasonics Sonochemistry > 2020 > 61 > C

As a novel type of carbon materials, graphynes possesses the merits of high carrier mobility and large surface areas, etc. However, to date, the main research of graphynes is focused on theoretical calculation whereas few strategies have been reported for the fabrication of graphynes. In this work, a facile method named ultrasound-promoted synthesis was developed to fabricate γ-graphyne using PhBr...

article

A novel hybrid cavitation process for enhancing and altering rate of disinfection by use of natural oils derived from plants

Maya B. Mane, Vinay M. Bhandari, Kshama Balapure, Vivek V. Ranade

Ultrasonics Sonochemistry > 2020 > 61 > C

The present study is an attempt to improvise the hydrodynamic cavitation methodology for effective disinfection of water and also to suggest prototype development for practical application. The enhancement in the disinfection efficiency was evaluated specifically for the effect of pressure, temperature, pH, microbial inoculum size and also on effect of different additives for the two model microbial...

article

BaMnO3 nanostructures: Simple ultrasonic fabrication and novel catalytic agent toward oxygen evolution of water splitting reaction

Sousan Gholamrezaei, Mojgan Ghanbari, Omid Amiri, Masoud Salavati-Niasari, more

Ultrasonics Sonochemistry > 2020 > 61 > C

In the current paper, the main aim is to fabricate the BaMnO ₃ nanostructures via the sonochemical route. The various factor, including precursors, reaction time and power of sonication can affect the shape, size, and purity of the samples. We utilized X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR),...

article

Modulation of the secondary Bjerknes force in multi-bubble systems

Haiyan Chen, Ziliang Chen, Yi Li

Ultrasonics Sonochemistry > 2020 > 61 > C

The behaviours of insonated bubble clusters are regulated by the secondary Bjerknes force between bubble pairs. While the force has been investigated extensively for two-bubble systems, the modulation of the force by nearby bubbles remains unclear. This problem is investigated in this paper by theoretical analyses and numerical simulations of a three bubble system. For weak oscillations, the third...

article

Efficient CGM-based parallel algorithms for the longest common subsequence problem with multiple substring-exclusion constraints

Vianney Kengne Tchendji, Armel Nkonjoh Ngomade, Jerry Lacmou Zeutouo, Jean Frédéric Myoupo

Parallel Computing > 2020 > 91 > C

A variant of the Longest Common Subsequence (LCS) problem is the LCS problem with multiple substring-exclusion constraints (M-STR-EC-LCS), which has great importance in many fields especially in bioinformatics. This problem consists to compute the LCS of two strings X and Y of length n and m respectively that excluded a set of d constraints P={P1,P2,…,Pd} of total length r. Recently, Wang et al. proposed...

article

Ultrasound assisted formation of essential oil nanoemulsions: Emerging alternative for Culex pipiens pipiens Say (Diptera: Culicidae) and Plodia interpunctella Hübner (Lepidoptera: Pyralidae) management

E. Jesser, A.S. Lorenzetti, C. Yeguerman, A.P. Murray, more

Ultrasonics Sonochemistry > 2020 > 61 > C

Over the last years, nanotechnology has contributed to the development of new botanical insecticides formulations based on essential oils (EO), which are safe for the human health and the environment. Nanoemulsions (NEs) can enhance the bioactivity of the EO to prevent the premature volatility and degradation of the active ingredients. In our work, geranium EO (Geranium maculatum L.) was used to develop...

article

Liposome destruction by hydrodynamic cavitation in comparison to chemical, physical and mechanical treatments

Žiga Pandur, Iztok Dogsa, Matevž Dular, David Stopar

Ultrasonics Sonochemistry > 2020 > 61 > C

Liposomes are widely applied in research, diagnostics, medicine and in industry. In this study we show for the first time the effect of hydrodynamic cavitation on liposome stability and compare it to the effect of well described chemical, physical and mechanical treatments. Fluorescein loaded giant 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) lipid vesicles were treated with hydrodynamic cavitation...

article

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Parallel Computing > 2020 > 91 > C

article

The effect of ultrasound treatment on the interaction of brine with pork meat proteins

Andrey Sergeev, Natalya Shilkina, Valery Tarasov, Srinivas Mettu, more

Ultrasonics Sonochemistry > 2020 > 61 > C

The objective of the study is to elucidate the effect of ultrasound treated salt solution on curing of pork meat. The interactions of salt (NaCl) solutions of 3 and 25% with the proteins of pork meat are studied. High intensity ultrasound operating at 20 kHz was used. The differential scanning calorimetry (DSC), NMR spin-spin relaxation time, unfrozen water and water diffusion coefficient measurements...

article

Variation in the biological characteristics of BAC during ultrasonic regeneration

Cheng Liu, Zhehao Sun, Wei Chen

Ultrasonics Sonochemistry > 2020 > 61 > C

Ultrasonic treatment has been shown to have a favorable effect on the regeneration of spent biological activated carbon (BAC) from drinking water treatment plants. In this study, the use of ultrasound as a regeneration method had a significant effect on the recovery of spent BAC after 7.5 years of use; it effectively increased the iodine value from 300 mg/g to 600 mg/g and restored the specific surface...

article

Effect of ultrasound on the techno-functional properties of food components/ingredients: A review

José A. Téllez-Morales, Betsabé Hernández-Santo, Jesús Rodríguez-Miranda

Ultrasonics Sonochemistry > 2020 > 61 > C

Ultrasound (US) has been used in many food systems and model systems, such as starch, whey protein concentrates and soy, to modify their chemical and techno-functional properties. At present, the use of ultrasound has yielded diverse results, ranging from potentiating the technological and functional properties of various foods to different operating conditions. Similarly, the results that were obtained...

article

Ultrasound-assisted forward osmosis desalination using inorganic draw solutes

Muhammad Qasim, Faisal W. Khudhur, Ahmed Aidan, Naif A. Darwish

Ultrasonics Sonochemistry > 2020 > 61 > C

Internal concentration polarization (ICP) represents a serious challenge in forward osmosis (FO) desalination since it causes a significant decline in the water flux across the membrane. Mitigation of ICP is cumbersome since the phenomenon occurs within the membrane porous support layer and mitigation procedures such as inducing turbulence or changing the hydrodynamic conditions tend to be ineffective...

article

Preparation of zinc tungstate nanomaterial and its sonocatalytic degradation of meloxicam as a novel sonocatalyst in aqueous solution

Liang Xu, Xin Wang, Ming-Ling Xu, Bin Liu, more

Ultrasonics Sonochemistry > 2020 > 61 > C

Zinc tungstate (ZnWO ₄ ) was previously used as a photocatalyst. In this paper, for the first time as an sonocatalyst, the performance of ZnWO ₄ for sonocatalytic degradation of meloxicam (MEL) under ultrasonic irradiation were studied. Firstly, ZnWO ₄ nanomaterials were synthesized at different acidity (pH = 5, 6, 7, 8, 9) via the hydrothermal method. Utilizing SEM, XRD and EDS techniques to characterize...

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INFONA - science communication portal

Search results

Direct contact ultrasound for fouling control and flux enhancement in air-gap membrane distillation

Sonochemical synthesis, characterization and application of PrVO4 nanostructures as an effective photocatalyst for discoloration of organic dye contaminants in wastewater

Effect of sonication time on the evaporation rate of seawater containing a nanocomposite

Molecular regulatory mechanisms of Escherichia coli O157:H7 in response to ultrasonic stress revealed by proteomic analysis

Ultrasonic-assisted micro solid phase extraction of arsenic on a new ion-imprinted polymer synthesized from chitosan-stabilized pickering emulsion in water, rice and vegetable samples

Facile synthesis and electrochemical properties of a novel Ni-B/TiC composite coating via ultrasonic-assisted electrodeposition

Sonochemical synthesis of Dy3+ substituted Mn0.5Zn0.5Fe2−xO4 nanoparticles: Structural, magnetic and optical characterizations

Ultrasound-promoted synthesis of γ-graphyne for supercapacitor and photoelectrochemical applications

A novel hybrid cavitation process for enhancing and altering rate of disinfection by use of natural oils derived from plants

BaMnO3 nanostructures: Simple ultrasonic fabrication and novel catalytic agent toward oxygen evolution of water splitting reaction

Modulation of the secondary Bjerknes force in multi-bubble systems

Efficient CGM-based parallel algorithms for the longest common subsequence problem with multiple substring-exclusion constraints

Ultrasound assisted formation of essential oil nanoemulsions: Emerging alternative for Culex pipiens pipiens Say (Diptera: Culicidae) and Plodia interpunctella Hübner (Lepidoptera: Pyralidae) management

Liposome destruction by hydrodynamic cavitation in comparison to chemical, physical and mechanical treatments

Editorial Board

The effect of ultrasound treatment on the interaction of brine with pork meat proteins

Variation in the biological characteristics of BAC during ultrasonic regeneration

Effect of ultrasound on the techno-functional properties of food components/ingredients: A review

Ultrasound-assisted forward osmosis desalination using inorganic draw solutes

Preparation of zinc tungstate nanomaterial and its sonocatalytic degradation of meloxicam as a novel sonocatalyst in aqueous solution

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