U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Subject "ultrasonic treatment" Remove constraint Subject: "ultrasonic treatment"
Start Over

Search

6,928  Search Results

« Previous | 1 - 20 of 6,928 |
Number of results to display per page

Search Results

1. A review of bulk nanobubbles and their roles in flotation of fine particles

Author:
Chenwei Li; Haijun Zhang
Source:
Powder technology 2022 v.395 pp. 618-633
ISSN:
0032-5910
Subject:
ultrasonic treatment,   etc   ; liquids; nanobubbles; pH; physics; surfactants;     Show all 6 Subjects
Abstract:
... The decreasing size of minerals that need to be separated with flotation technique has posed a rigorous challenge to conventional flotation techniques. It's urgent for the researchers working in the field of minerals processing to develop a kind of new, efficient but economic flotation technique. In the past dozens of years, a mass of reports regarding the application of bulk nanobubbles in flotat ...
DOI:
10.1016/j.powtec.2021.10.004

2. Ultrasonic-assisted flowing water thawing of frozen beef with different frequency modes: Effects on thawing efficiency, quality characteristics and microstructure

Author:
Bengang Wu; Chengcheng Qiu; Yiting Guo; Chunhong Zhang; Xiuyu Guo; Yasmine Bouhile; Haile Ma
Source:
Food research international 2022 v.157 pp. 111484
ISSN:
0963-9969
Subject:
ultrasonic treatment,   etc   ; beef; food research; industry; microstructure; muscles;     Show all 6 Subjects
Abstract:
... This study aimed to evaluate the effects of ultrasonic-assisted thawing at different frequency modes (mono-, dual- and tri-frequency) on the thawing efficiency and quality evaluation of frozen beef. The thawing time, muscle quality, and microstructure of frozen beef were studied. The results showed that ultrasonic-assisted thawing effectively reduced the thawing time by 15.7–45.4% compared with fl ...
DOI:
10.1016/j.foodres.2022.111484

3. Disposable screen-printed carbon-based electrodes in amperometric detection for simultaneous determination of parabens in complex-matrix personal care products by HPLC

Author:
Sergio Lucas-Sánchez; Lucía Abad-Gil; Carmen Isabel-Cabrera; M. Jesús Gismera; M. Teresa Sevilla; Jesús R. Procopio
Source:
Talanta 2022 v.245 pp. 123459
ISSN:
0039-9140
Subject:
ultrasonic treatment,   etc   ; electrochemistry; electrodes; graphene; liquids; pH; porous media;     Show all 7 Subjects
Abstract:
... Parabens are chemicals widely used as preservatives in different types of industrial products. In recent years, the concern about the safety of these compounds has increased due to their endocrine disrupting activity. For this reason, their use is highly regulated and even some of them have already been banned. Thus, methods for the sensitive and selective detection of these compounds are required ...
DOI:
10.1016/j.talanta.2022.123459

4. Effects of five extraction methods on total content, composition, and stability of flavonoids in jujube

Author:
Xiu-min Liu; Ya Liu; Chun-hui Shan; Xin-quan Yang; Qin Zhang; Na Xu; Li-ying Xu; Wen Song
Source:
Food chemistry: X 2022 v.14 pp. 100287
ISSN:
2590-1575
Subject:
ultrasonic treatment,   etc   ; Ziziphus; food chemistry; microwave treatment; rutin; solvents;     Show all 6 Subjects
Abstract:
... The present study investigated the effects of different extraction methods including water-water bath (W-WB), ethanol-water bath (E-WB), deep eutectic solvent (DES) combined with ultrasound-assisted extraction (DES-UAE), microwave-assisted extraction (DES-MAE), and enzyme-assisted extraction (DES-EAE) on flavonoids (total flavonoid content, flavonoid composition, and stability) in jujube. The high ...
DOI:
10.1016/j.fochx.2022.100287

5. Unexpected exfoliation and activity of nano poly(tetrafluoroethylene) particles from magnetic stir bars: Discovery and implication

Author:
Yanfeng Wang; Jing Zhang; Liangtao Pu; Miao Cao; Shangshang Dong; Chad D. Vecitis; Guandao Gao
Source:
Chemosphere 2022 v.291 pp. 132797
ISSN:
0045-6535
Subject:
ultrasonic treatment,   etc   ; hydroxyl radicals; magnetism; pollution control; singlet oxygen;     Show all 5 Subjects
Abstract:
... Magnetic stir bars are routinely used by most of researchers in the fields of chemistry, biology and environment etc. An incredible phenomenon, in which the magnetic stirring increased reaction rate by tens of times under ultrasound irradiation, impelled us to explore roles of magnetic stirring. Unexpectedly, the thimbleful nano PTFE particles, from shell of magnetic stir bar, were exfoliated duri ...
DOI:
10.1016/j.chemosphere.2021.132797

6. Microwave- and ultrasound-assisted extraction of capsaicin from Capsicum annuum using deep eutectic solvents

Author:
Misbah Hussain; Muhammad Tariq Qamar; Dildar Ahmed
Source:
International journal of vegetable science 2022 v.28 no.4 pp. 312-319
ISSN:
1931-5279
Subject:
ultrasonic treatment,   etc   ; Capsicum annuum; capsaicin; choline; microwave treatment; solvents; vegetables;     Show all 7 Subjects
Abstract:
... Methods exist to extract capsaicin from chili (Capsicum annuum L.), but they have poor yield and are hazardous to the environment. The objective of the study was to develop a process for extraction of capsaicin from chili that is more efficient and bio-rationale. Two deep eutectic solvents (DES), choline chloride-urea (CCU) and choline chloride-glycerol (CCG), were used for extraction with MAE (mi ...
DOI:
10.1080/19315260.2021.1960459

7. Phenolic compounds from passion fruit rinds using ultrasound-assisted pressurized liquid extraction and nanofiltration

Author:
Débora Tamires Vitor Pereira; Francisco Manuel Barrales; Ericsem Pereira; Juliane Viganó; Amadeu Hoshi Iglesias; Felix Guillermo Reyes Reyes; Julian Martínez
Source:
Journal of food engineering 2022 v.325 pp. 110977
ISSN:
0260-8774
Subject:
ultrasonic treatment,   etc   ; antioxidant activity; ethanol; liquids; nanofiltration; passion fruits; polyamides;     Show all 7 Subjects
Abstract:
... Ultrasound-Assisted Pressurized Liquid Extraction (UAPLE) and Nanofiltration (NF) were performed in 70% ethanol to recover and concentrate bioactive compounds from passion fruit rinds. Polyamide Thin-Film Composite membranes with nominal MWCO between 150 and 300 Da provided good retention of phenolic compounds (74–89%) and antioxidant capacity (84–96%) with a maximum mass concentration factor 1.4. ...
DOI:
10.1016/j.jfoodeng.2022.110977

8. Ultrasound in cellulose-based hydrogel for biomedical use: From extraction to preparation

Author:
Yanhao Liu; Shubin Li; Zhenyu Wang; Lu Wang
Source:
Colloids and surfaces 2022 v.212 pp. 112368
ISSN:
0927-7765
Subject:
ultrasonic treatment,   etc   ; acoustics; biocompatible materials; biopolymers; cellulose; energy; hydrogels; ultrasonics;     Show all 8 Subjects
Abstract:
... As the most abundant natural polymer on the pl anet, cellulose has a wide range of applications in the biomedical field. Cellulose-based hydrogels further expand the applications of this class of biomaterials. However, a number of publications and technical reports are mainly about traditional preparation methods. Sonochemistry offers a simple and green route to material synthesis with the biomedi ...
DOI:
10.1016/j.colsurfb.2022.112368

9. An experimental study on pore structural changes of ultrasonic treated Korean paulownia (Paulownia coreana)

Author:
Eun-Suk Jang; Chun-Won Kang
Source:
Wood science and technology 2022 v.56 no.3 pp. 883-898
ISSN:
0043-7719
Subject:
ultrasonic treatment,   etc   ; Paulownia; absorbance; absorption; heartwood; permeability; porosity; tyloses; ultrasonics; wood;     Show all 10 Subjects
Abstract:
... This study investigated the effects of ultrasonic treatment on the pore structure of the Korean paulownia (Paulownia coreana). Cylindrical samples (10 mm thickness and 29 mm in diameter) were taken from heartwood in longitudinal direction and divided into two groups; Group (A) consisted of samples with 2 to 3 annual rings, while the samples of Group (B) had 5 to 6 annual rings. Changes in pore str ...
DOI:
10.1007/s00226-022-01382-1

10. Design and preparation of core–shell AP@HNS composites with high safety and excellent thermal decomposition performance

Author:
Wenxiang Li; Ping Ye; Changping Guo; Wenkun Zhu; Dayong Jin
Source:
RSC advances 2022 v.12 no.24 pp. 15329-15336
ISSN:
2046-2069
Subject:
ultrasonic treatment,   etc   ; ammonium perchlorate; energy; heat; pollution; polyurethanes; probability; thermal degradation;     Show all 8 Subjects
Abstract:
... Solid propellants with high safety, excellent thermal decomposition, and green performance are hot and difficult research areas in aerospace. In this paper, AP@HNS (hexanitrostilbene) composites with core–shell structure were designed and prepared by an ultrasound-assisted method using polyurethane for the interfacial modification of ammonium perchlorate (AP). The results show that the AP@HNS comp ...
DOI:
10.1039/d2ra01871c

11. Efficient Antiscaling Technology Based on Superhydrophobicity Coupled Ultrasonic Technology

Author:
Jian He; Keke Wang; Xingyang Zhang; Pan Wu; Changjun Liu; Wei Jiang
Source:
Industrial & engineering chemistry process design and development 2022 v.61 no.15 pp. 5272-5284
ISSN:
1520-5045
Subject:
ultrasonic treatment,   etc   ; adhesion; energy conservation; hydrophobicity; process design; synergism; temperature; ultrasonics;     Show all 8 Subjects
Abstract:
... To meet the urgent demand for antiscaling technology, a superhydrophobic surface coupled with ultrasonic technology is proposed to develop an environmentally friendly, energy-saving, and high-efficiency antiscaling technology. Six types of superhydrophobic coatings are prepared on the metal surface by the spray adhesion method, and their antiscaling performance is carefully investigated. The resul ...
DOI:
10.1021/acs.iecr.2c00412

12. Highly antimicrobial and strong cellulose-based biocomposite film prepared with bacterial cellulose powders, Uncaria gambir, and ultrasonication treatment

Author:
Hairul Abral; Arif Kurniawan; Dieter Rahmadiawan; Dian Handayani; Eni Sugiarti; Ahmad Novi Muslimin
Source:
International journal of biological macromolecules 2022 v.208 pp. 88-96
ISSN:
0141-8130
Subject:
ultrasonic treatment,   etc   ; Uncaria gambir; antimicrobial properties; biocomposites; cellulose; tensile strength; ultrasonics;     Show all 7 Subjects
Abstract:
... This work characterized bacterial cellulose (BC)/Uncaria gambir (G) biocomposite film prepared with ultrasonication treatment. Films were prepared from BC powder suspensions in distilled water without and with various loadings (0.05 g, 0.1 g, 0.2 g, 2 g) of G powder then treated using an ultrasonic probe at 1000 W for one hour. The results revealed that the ultrasonication treatment of the suspens ...
DOI:
10.1016/j.ijbiomac.2022.02.154

13. The Problem of Regulation of Toxigenic Blooming in Freshwater Bodies

Author:
V. A. Rumyantsev; V. N. Rybakin; I. V. Rudsky; O. A. Pavlova; L. L. Kapustina; G. G. Mitrukova; A. N. Korovin
Source:
Water resources 2022 v.49 no.2 pp. 311-320
ISSN:
0097-8078
Subject:
ultrasonic treatment,   etc   ; Russia; Synechocystis; biosynthesis; cell death; freshwater; stress tolerance; ultrasonics;     Show all 8 Subjects
Abstract:
... The data of laboratory studies on the effect of low-intensity ultrasound on the toxigenic cyanobacteria Synechocystis sp., the species dominant in the North-West of Russia, cause “blooming” of drinking water sources and pose a danger to the health of the population of cities and rural areas. The study revealed that ultrasonic irradiation is stressful for cyanobacteria. It has been found for the fi ...
DOI:
10.1134/S0097807822020129

14. Ultrasound-induced changes in rheological behavior and hydrophobic microdomains of Lignosus rhinocerotis polysaccharide

Author:
Wudan Cai; Ting Hu; Wenfei Cai; Qilin Huang
Source:
International journal of biological macromolecules 2022 v.213 pp. 565-573
ISSN:
0141-8130
Subject:
ultrasonic treatment,   etc   ; Lignosus rhinocerotis; hydrophobicity; loss modulus; polysaccharides; storage modulus; ultrasonics;     Show all 7 Subjects
Abstract:
... Ultrasound is increasingly applied to modify the structures and physicochemical properties of polysaccharides. Hence, this work investigated the ultrasound-induced changes in the rheological behavior and hydrophobic microdomains of Lignosus rhinocerotis polysaccharide (LRP). With an increase in ultrasonic time, the apparent viscosity, storage modulus, loss modulus, and the final percentage recover ...
DOI:
10.1016/j.ijbiomac.2022.05.182

15. Ultrasound‐assisted extraction of essential and toxic elements from pepper in different ripening stages using Box–Behnken design

Author:
Milica Lučić; Ivana Sredović Ignjatović; Steva Lević; Ilinka Pećinar; Mališa Antić; Slađana Đurđić; Antonije Onjia
Source:
Journal of food processing and preservation 2022 v.46 no.4 pp. e16493
ISSN:
0145-8892
Subject:
ultrasonic treatment,   etc   ; acetic acid; experimental design; pepper; solvents; sweet peppers; toxicity;     Show all 7 Subjects
Abstract:
... The influence of extraction parameters on the ultrasonically assisted extraction (UAE) of K, Na, Ca, Mg, Zn, Cu, Fe, Mn, Cr, Se, Mo, Li, Al, B, Pb, Hg, Cd, As, and Ni was studied to determine the conditions when a minimum of essential and maximum of toxic elements is leached from peppers, depending on its ripening stage. The effect of process variables was investigated by using Box–Behnken design. ...
DOI:
10.1111/jfpp.16493

16. Establishment of ultrasonic stimulation to enhance growth of Haematococcus lacustris

Author:
Sang-Il Han; Min Seo Jeon; Joon-Woo Ahn; Yoon-E Choi
Source:
Bioresource technology 2022 pp. 127525
ISSN:
0960-8524
Subject:
ultrasonic treatment,   etc   ; Haematococcus; cell division; chlorophyll; nitrogen; sonication; transmission electron microscopy; ultrasonics;     Show all 8 Subjects
Abstract:
... In this study, ultrasonication at a frequency of 40 kHz was used to shorten the sonication period and enhance the growth of Haematococcus lacustris. To confirm the optimal conditions, the effects of ultrasound output and treatment interval were examined. Under optimal conditions (20 W and 15-day cycle), the maximum cell density and chlorophyll content were 66.75 × 10⁴ cells mL–¹ and 36.54 mg g–¹, ...
DOI:
10.1016/j.biortech.2022.127525

17. Interface-engineered reduced graphene oxide assembly on nanofiber surface for high performance strain and temperature sensing

Author:
Wei Xiao; Ling Wang; Bei Li; Yiyao Li; Yuqing Wang; Junchen Luo; Xuewu Huang; An Xie; Jiefeng Gao
Source:
Journal of colloid and interface science 2022 v.608 pp. 931-941
ISSN:
0021-9797
Subject:
ultrasonic treatment,   etc   ; durability; electronics; graphene oxide; hydrophobicity; nanofibers; polyurethanes; surface roughness; temperature;     Show all 9 Subjects
Abstract:
... Conductive polymer nanofiber composites (CPNCs) based wearable sensing electronics have aroused great attention of scientists in recent years. However, it is still difficult to obtain CPNCs with good water proof, excellent durability, and multiple sensing performance. Herein, we develop a multifunctional CPNC with a wrinkled reduced graphene oxide (RGO) shell and polymer nanofiber core, which is p ...
DOI:
10.1016/j.jcis.2021.10.032

18. Measuring the anthocyanin content of the Australian fruit and vegetables for the development of a food composition database

Author:
Mamatha CHANDRA SINGH; William E PRICE; Celine KELSO; Jayashree ARCOT; Yasmine PROBST
Source:
Journal of food composition and analysis 2022 pp. 104697
ISSN:
0889-1575
Subject:
ultrasonic treatment,   etc   ; absorptivity; anthocyanins; food composition; fruits; liquid chromatography; nutrient databanks; vegetables;     Show all 8 Subjects
Abstract:
... It is well known that changes in the anthocyanin content occur during fruit/vegetable development. However, the anthocyanin content variation due to various analytical methods has not been established in the literature. Therefore, in this study, the individual and the total anthocyanin content of the 64 Australian foods have been determined using liquid chromatography (LC-MS, LC-UV) and spectropho ...
DOI:
10.1016/j.jfca.2022.104697

19. Techno-economic assessment of the biodiesel production using natural minerals rocks as a heterogeneous catalyst via conventional and ultrasonic techniques

Author:
Abdallah S. Elgharbawy; Rehab M. Ali
Source:
Renewable energy 2022 v.191 pp. 161-175
ISSN:
0960-1481
Subject:
ultrasonic treatment,   etc   ; biodiesel; catalysts; diesel fuel; economic analysis; feedstocks; methanol; pollution; ultrasonics;     Show all 9 Subjects
Abstract:
... The pollution problems and limited availability of diesel fuel urge the world to substitute it with clean biodiesel. The biggest obstacle to use biodiesel as a fuel is its high price. Using waste feedstock, cheap catalysts, and advanced production techniques can decrease the biodiesel price to be reasonable. This research can be divided into a technical part and an economic part. The technical one ...
DOI:
10.1016/j.renene.2022.04.020

20. The effect of solvents polarity and extraction conditions on the microalgal lipids yield, fatty acids profile, and biodiesel properties

Author:
Mohammad Javad Zarrinmehr; Ehsan Daneshvar; Subhasha Nigam; Kannappan Panchamoorthy Gopinath; Jayanta Kumar Biswas; Eilhann E. Kwon; Hailong Wang; Omidvar Farhadian; Amit Bhatnagar
Source:
Bioresource technology 2022 v.344 pp. 126303
ISSN:
0960-8524
Subject:
ultrasonic treatment,   etc   ; acetone; biodiesel; biomass; chloroform; hexane; methanol; microalgae; oxidative stability; temperature;     Show all 10 Subjects
Abstract:
... This study reports the effects of polar (acetone/methanol) and non-polar (chloroform/hexane) solvents on lipid yield, fatty acids methyl esters (FAMEs) composition, and biodiesel properties of microalgae. The lipids yield extracted by hexane and chloroform (100.01 and 94.33 mg/g) were higher than by methanol and acetone (40.12 and 86.91 mg/g). The polarity of solvents also affected FAMEs compositi ...
DOI:
10.1016/j.biortech.2021.126303