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You searched for: Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Subject term magnetism Remove constraint Subject term: magnetism
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1. 111 Improvement of cat and bull sperm quality using nanotechnology as a model for wild species

Author:
C. L. Durfey; T. Rowlison; C. U. Lagu; C. Sente; M. L. Khaitsa; H. J. Clemente; P. L. Ryan; S. T. Willard; J. M. Feugang
Source:
Reproduction, fertility, and development 2019 v.31 no.1 pp. 181-182
ISSN:
1031-3613
Subject:
Bovidae; Sahiwal; acrosome; blastocyst; boars; breeding programs; bulls; cats; cold tolerance; cryopreservation; electromagnetic field; endangered species; epididymis; freeze-thaw cycles; in vitro fertilization; iron oxides; liquids; magnetism; models; nanoparticles; nitrogen; oocytes; semen; sperm quality; wildlife
Abstract:
... Assisted reproductive techniques (ART) are widely used in domestic species, with increasing applications in wildlife conservation. However, the currently available techniques for semen preparations are not fully reliable or applicable in all species to ensure successful ART outcomes. Recent developments in nanotechnology offer new horizons for further optimization of sperm preparations. The use of ...
DOI:
10.1071/RDv31n1Ab111

2. A 12,700-year history of paleolimnological change from an Andean microrefugium

Author:
Majoi de Novaes Nascimento; Anne Gail Laurenzi; Bryan G Valencia; Robert Van; Mark Bush
Source:
Holocene 2019 v.29 no.2 pp. 231-243
ISSN:
1477-0911
Subject:
Bacillariophyceae; carbonates; climate; drying; flora; fossils; habitats; lakes; landscapes; magnetism; mixing; solar radiation; stratigraphy; woodlands; Andes region; Pacific Ocean; Peru
Abstract:
... We present a 12,6700-yr limnological history of Lake Miski, a high-elevation lake in a wet section of the Peruvian Andes. While many shallow Andean lakes dried up during the mid-Holocene, loss-on-ignition, magnetic susceptibility, and diatom analysis showed that Lake Miski was a constant feature in the landscape. Overall, fluctuations in the fossil diatom communities of Lake Miski tracked changes ...
DOI:
10.1177/0959683618810400

3. The 18th FRAME Annual Lecture, October 2019: Human In Silico Trials in Pharmacology

Author:
Blanca Rodriguez
Source:
ATLA. Alternatives to laboratory animals v.47 no.5-6 pp. 221-227
ISSN:
0261-1929
Subject:
computer simulation; computer software; computers; drugs; electrocardiography; electrophysiology; humans; industry; laboratories; magnetism
Abstract:
... Safety and efficacy testing is a crucial part of the drug development process, and several different methods are used to obtain the necessary data (e.g. in vitro testing, animal trials and clinical trials). Our group has been investigating the potential of modelling and simulation as an alternative approach to some of the methods used for testing drugs for cardiac effects. To achieve our goal of d ...
DOI:
10.1177/0261192919896356

4. 1H NMR-based metabolomic analysis of nine organophosphate flame retardants metabolic disturbance in Hep G2 cell line

Author:
Jinping Gu; Feng Su; PanPan Hong; Quan Zhang; Meirong Zhao
Source:
Science of the total environment 2019 v.665 pp. 162-170
ISSN:
0048-9697
Subject:
amino acid metabolism; antagonists; biomarkers; flame retardants; human cell lines; magnetism; metabolites; metabolomics; mineralocorticoid receptors; multivariate analysis; nuclear magnetic resonance spectroscopy; organophosphorus compounds; osmotic pressure; oxidative stress; phenotype; pollutants
Abstract:
... Organophosphate flame retardants (OPFRs) are frequently found in the environment and could be adversely affecting organisms. In fact, nine OPFRs have been shown to cause endocrine disruptions, but information on the metabolism-perturbing properties of these OPFRs remains unclear. In this study, the ¹H-nuclear magnetic resonance (NMR) based metabolomic method was applied to evaluate the metabolic d ...
DOI:
10.1016/j.scitotenv.2019.02.055

5. 1H nuclear magnetic resonance-based metabolic profiling of cerebrospinal fluid to identify metabolic features and markers for tuberculosis meningitis

Author:
Peixu Zhang; Weiguanliu Zhang; Yue Lang; Yan Qu; Jiafeng Chen; Li Cui
Source:
Infection, genetics, and evolution 2019 v.68 pp. 253-264
ISSN:
1567-1348
Subject:
amino acid metabolism; biomarkers; carbohydrates; cerebrospinal fluid; databases; humans; magnetism; meningitis; metabolites; metabolome; metabolomics; models; nuclear magnetic resonance spectroscopy; patents; patients; principal component analysis; screening; tuberculosis
Abstract:
... Tuberculosis meningitis (TBM) is the most severe form of tuberculosis, and currently lacks efficient diagnostic approaches. Metabolomics has the potential to differentiate patients with TBM from those with other forms of meningitis and meningitis-negative individuals. However, no systemic metabolomics research has compared the cerebrospinal fluid (CSF) of these patients.¹H nuclear magnetic resonan ...
DOI:
10.1016/j.meegid.2019.01.003

6. The 3D CoNi alloy particles embedded in N-doped porous carbon foams for high-performance microwave absorbers

Author:
Jing Yan; Ying Huang; Chen Chen; Xudong Liu; Hui Liu
Source:
Carbon 2019 v.152 pp. 545-555
ISSN:
0008-6223
Subject:
absorption; alloys; carbon; cobalt; electromagnetic radiation; foams; magnetism; melamine; nickel; nitrates; surfactants
Abstract:
... The 3D CoNi alloy particles embedded N-doped porous carbon (CoNi@PRM-NC) foam with open reticular structures and high-performance microwave absorption are prepared by the novel sponge-templated strategy that uses melamine foam as a sacrificial scaffold and supporting template, phenolic resol as a carbon precursor and cobalt nickel nitrate as a magnetic particle precursor. It is worth noting that t ...
DOI:
10.1016/j.carbon.2019.06.064

7. 3D biofilm visualization and quantification on granular bioanodes with magnetic resonance imaging

Author:
Leire Caizán-Juanarena; Julia R. Krug; Frank J. Vergeldt; J. Mieke Kleijn; Aldrik H. Velders; Henk Van As; Annemiek ter Heijne
Source:
Water research 2019 pp. -
ISSN:
0043-1354
Subject:
activated carbon; bioanodes; biofilm; biomass; circular economy; electricity; electrochemistry; magnetism; organic matter; research; roughness; surface area; total nitrogen; wastewater; wastewater treatment; water
Abstract:
... The use of microbial fuel cells (MFCs) for wastewater treatment fits in a circular economy context, as they can produce electricity by the removal of organic matter in the wastewater. Activated carbon (AC) granules are an attractive electrode material for bioanodes in MFCs, as they are cheap and provide electroactive bacteria with a large surface area for attachment. The characterization of biofil ...
DOI:
10.1016/j.watres.2019.115059

8. 3D digital analysis of magnetic force-driven orthodontic tooth movement

Author:
Yukinori Kuwajima; Yoshiki Ishida; Cliff Lee; Hisayo Mayama; Kazuro Satoh; Shigemi Ishikawa-Nagai
Source:
Heliyon 2019 v.5 no.11 pp. e02861
ISSN:
2405-8440
Subject:
biosafety; magnetic materials; magnetism; models; orthodontics; titanium
Abstract:
... With the introduction of rare earth magnets like neodymium-iron-boron (NdFeB), it has become possible to produce small magnets with high forces, necessary for its usage in the field of dentistry, such as for orthodontic tooth movement. The ultimate goal of this project is to establish magnetic force-driven orthodontic treatment as a future treatment modality for comprehensive orthodontic treatment ...
DOI:
10.1016/j.heliyon.2019.e02861
PubMed:
31844745
PubMed Central:
PMC6895672

9. 3d Transition Metal-Metallofullerene-Ligand Molecular Wires: Robust One-Dimensional Antiferromagnetic Semiconductors

Author:
Xiuyun Zhang; Xiaoshu Gong; Yi Sun; Mingxia Xu; Bin Xi; Xinli Zhao; Xiaoshan Ye; Xiaojing Yao; Maoshuai He; Lili Liu; Yongjun Liu
Source:
Journal of physical chemistry 2019 v.123 no.50 pp. 30571-30577
ISSN:
1932-7455
Subject:
chromium; density functional theory; electrons; encapsulation; ferrimagnetic materials; ligands; magnetism; nanowires; nickel; physical chemistry; semiconductors; titanium; vanadium
Abstract:
... The structures and properties of one-dimensional (1D) sandwich molecular wires constructed with altering 3d transition metal (TM) and the metallofullerene (TM@C₆₀) entities, [TM&(TM@C₆₀)]∞, are studied using density functional theory calculations. Different from the bonding character insensitivity to TM of previously reported 1D [TMBz]∞ and [TMCp]∞ analogues, the bonding characters of the investig ...
DOI:
10.1021/acs.jpcc.9b08946

10. 3d-Metal Induced Magnetic Ordering on U(IV) Atoms as a Route toward U(IV) Magnetic Materials

Author:
Vladislav V. Klepov; Kristen A. Pace; Stuart Calder; Justin B. Felder; Hans-Conrad zur Loye
Source:
Journal of the American Chemical Society 2019 v.141 no.9 pp. 3838-3842
ISSN:
1520-5126
Subject:
cations; cobalt; ferrimagnetic materials; fluorides; magnetic properties; magnetism; manganese; metal ions; neutron diffraction; nickel; phase transition; temperature; uranium; zinc
Abstract:
... Uranium(IV) 5f² magnetism is dominated by a transition from a triplet to a singlet ground state at low temperatures. For the first time, we achieved magnetic ordering of U(IV) atoms in a complex fluoride through the incorporation of 3d transition metal cations. This new route allowed us to obtain an unprecedented series of U(IV) ferrimagnetic materials of the new composition Cs₂MU₃F₁₆ (M = Mn²⁺, C ...
DOI:
10.1021/jacs.9b00345

11. 44-Methylgambierone, a new gambierone analogue isolated from Gambierdiscus australes

Author:
J. Sam Murray; Andrew I. Selwood; D. Tim Harwood; Roel van Ginkel; Jonathan Puddick; Lesley L. Rhodes; Frode Rise; Alistair L. Wilkins
Source:
Tetrahedron letters 2019 v.60 no.8 pp. 621-625
ISSN:
0040-4039
Subject:
Gambierdiscus; chemical reactions; islands; magnetism; mass spectrometry; moieties; organic compounds
Abstract:
... A new analogue of gambierone, 44-methylgambierone, was isolated from the benthic dinoflagellate Gambierdiscus australes collected from Raoul Island (Rangitahua/Kermadec Islands). This molecule has been previously reported as maitotoxin-3. The structure of 44-methylgambierone was elucidated using 1D- and 2D-nuclear magnetic resonance spectroscopy and mass spectrometry techniques. The nine-ring poly ...
DOI:
10.1016/j.tetlet.2019.01.043

12. 4D cardiac magnetic resonance imaging, 4D and 2D transthoracic echocardiography: a comparison of in-vivo assessment of ventricular function in rats

Author:
Hedwig Stegmann; Tobias Bäuerle; Katharina Kienle; Sven Dittrich; Muhannad Alkassar
Source:
Laboratory animals 2019 v.53 no.2 pp. 169-179
ISSN:
1758-1117
Subject:
cardiovascular diseases; disease models; echocardiography; heart; image analysis; inferior vena cava; juveniles; laboratory animals; magnetic resonance imaging; magnetism; rats; scanners; transducers (equipment)
Abstract:
... Preclinical cardiovascular research is the foundation of our understanding and broad knowledge of heart function and cardiovascular disease. Reliable cardiac imaging modalities are the basis for applicable results. Four-dimensional cardiac magnetic resonance (4D CMR) has been set as the gold standard for in-vivo assessment of ventricular function in rodents. However, technical improvements in echo ...
DOI:
10.1177/0023677218789971

13. 4′-Aminobenzo-18-crown-6 functionalized magnetic nanoparticles as a solid-phase extraction adsorbent for the determination of Pb²⁺

Author:
Jing-yan Kang; Wei Ha; Hai-xia Zhang; Yan-ping Shi
Source:
Analytical methods 2019 v.11 no.13 pp. 1735-1742
ISSN:
1759-9679
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; apples; detection limit; iron oxides; lead; light scattering; magnetism; metal ions; milk; nanoparticles; rice; solid phase extraction; tap water; transmission electron microscopy; zeta potential
Abstract:
... A novel magnetic adsorbent has been designed and fabricated for the adsorption and determination of lead metal ions (Pb²⁺) based on a self-assembly approach between 4′-aminobenzo-18-crown-6 (AB18C6) and Fe₃O₄–CHO via dehydration condensation. 4′-Aminobenzo-18-crown-6 modified Fe₃O₄ (Fe₃O₄@AB18C6) was characterized by transmission electron microscopy (TEM), dynamic light scattering (DLS), Fourier t ...
DOI:
10.1039/c8ay02760a

14. 5‑Fluorouracil loaded chitosan/polyacrylic acid/Fe3O4 magnetic nanocomposite hydrogel as a potential anticancer drug delivery system

Author:
Mohammad Sadegh Amini-Fazl; Reza Mohammadi; Karim Kheiri
Source:
International journal of biological macromolecules 2019 v.132 pp. 506-513
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; chitosan; colon; drug delivery systems; drug therapy; fluorouracil; hydrogels; magnetism; nanocomposites; neoplasms; scanning electron microscopy; thermogravimetry
Abstract:
... In most cancer treatments, chemotherapy is currently necessary; hence, more attention was devoted to developing new methods for designing drug delivery systems (DDS) with controlled drug release. For this aim, anticancer 5‑fluorouracil (5-FU) drug was loaded into chitosan/polyacrylic acid/Fe3O4 magnetic nanocomposite hydrogel (CS/PAA/Fe3O4) through immersing in the drug solution. The prepared CS/P ...
DOI:
10.1016/j.ijbiomac.2019.04.005

15. Accurate Clinical Diagnosis of Liver Cancer Based on Simultaneous Detection of Ternary Specific Antigens by Magnetic Induced Mixing Surface-Enhanced Raman Scattering Emissions

Author:
Xiang-Ru Bai; Li-Hua Wang; Jia-Qiang Ren; Xiang-Wei Bai; Ling-Wen Zeng; Ai-Guo Shen; Ji-Ming Hu
Source:
Analytical chemistry 2019 v.91 no.4 pp. 2955-2963
ISSN:
1520-6882
Subject:
Raman spectroscopy; antibodies; antigens; biomarkers; blood serum; chemical bonding; detection limit; diagnostic techniques; emissions; ferritin; immunoassays; liver neoplasms; magnetism; mixing; serodiagnosis; therapeutics
Abstract:
... Establishing an accurate, simple, and rapid serodiagnosis method aiming for specific cancer antigens is critically important for the clinical diagnosis, therapy, and prognostication of cancer. Currently, surface-enhanced Raman scattering (SERS) readout techniques challenge fluorescent-based detection methods in terms of both optical stability and more importantly multiple detection capability, whi ...
DOI:
10.1021/acs.analchem.8b05153

16. An Accurate Visual-Inertial Integrated Geo-Tagging Method for Crowdsourcing-Based Indoor Localization

Author:
Tao Liu; Xing Zhang; Qingquan Li; Zhixiang Fang; Nadeem Tahir
Source:
Remote Sensing 2019 v.11 no.16 pp. -
ISSN:
2072-4292
Subject:
accelerometers; algorithms; cameras; databases; humans; magnetism; mobile telephones; remote sensing; signal strength; surveys
Abstract:
... One of the unavoidable bottlenecks in the public application of passive signal (e.g., received signal strength, magnetic) fingerprinting-based indoor localization technologies is the extensive human effort that is required to construct and update database for indoor positioning. In this paper, we propose an accurate visual-inertial integrated geo-tagging method that can be used to collect fingerpr ...
DOI:
10.3390/rs11161912

17. Accurate and sensitive determination of lead in black tea samples using cobalt magnetic particles based dispersive solid-phase microextraction prior to slotted quartz tube-flame atomic absorption spectrometry

Author:
Erhan Akkaya; Fatih Ahmet Erulas; Çağdaş Büyükpinar; Sezgin Bakirdere
Source:
Food chemistry 2019 pp. -
ISSN:
0308-8146
Subject:
adsorbents; atomic absorption spectrometry; black tea; cobalt; detection limit; lead; magnetism; mixing; quartz; solid phase microextraction
Abstract:
... Newly developed combination of magnetic cobalt particles based dispersive solid-phase microextraction (Co-MP-DSPME) and slotted quartz tube attached flame atomic absorption spectrometry (SQT-FAAS) was utilized to determine lead at trace levels in tea samples. Co-MPs’ adsorbent properties were tested and validated for their selectiveness to lead. Only with a few and short extraction steps (i.e. add ...
DOI:
10.1016/j.foodchem.2019.06.014

18. Accurate, hysteresis-free temperature sensor for health monitoring using a magnetic sensor and pristine polymer

Author:
Wooseong Jeong; Mijin Kim; Jae-Hyun Ha; Nora Asyikin Binti Zulkifli; Jung-Il Hong; CheolGi Kim; Sungwon Lee
Source:
RSC advances 2019 v.9 no.14 pp. 7885-7889
ISSN:
2046-2069
Subject:
body temperature; hysteresis; magnetic materials; magnetism; monitoring; polymers
Abstract:
... Herein, a novel temperature sensor is proposed employing a planar Hall resistance (PHR) magnetic sensor, a magnet sheet, and an expanding polymer. It features a tunable temperature range, high linear sensitivity, accuracy, and cycling stability through 1000 cycles, and no thermal hysteresis. This new sensor is promising as a body temperature sensor. ...
DOI:
10.1039/c8ra10467k

19. Acetylacetone functionalized magnetic carbon microspheres for the highly-efficient adsorption of heavy metal ions from aqueous solutions

Author:
Jie Ma; Mengya Sun; Yulan Zeng; Zhenhua Liu; Manman Zhang; Yao Xiao; Shuping Zhang
Source:
RSC advances 2019 v.9 no.6 pp. 3337-3344
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; absorption; adsorbents; adsorption; aqueous solutions; cadmium; carbon; chromium; copper; desorption; heavy metals; iron; kinetics; lead; magnetism; manganese; mercury; metal ions; microparticles; pH; scanning electron microscopy; transmission electron microscopy; zinc
Abstract:
... Herein, Acac-C@Fe₃O₄, a magnetic carbon (C@Fe₃O₄) modified with acetylacetone (Acac), was first prepared and used as a solid-phase adsorbent for adsorbing some heavy metal ions from aqueous solution. The adsorbent was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelect ...
DOI:
10.1039/c8ra09830a

20. Achieving high nitrogen removal efficiency by optimizing nitrite-dependent anaerobic methane oxidation process with growth factors

Author:
Jiaqi Wang; Miaolian Hua; Yufen Li; Fang Ma; Ping Zheng; Baolan Hu
Source:
Water research 2019 v.161 pp. 35-42
ISSN:
0043-1354
Subject:
bacteria; bacterial communities; betaine; bioprocessing; denitrification; engineering; growth factors; heme; long term effects; magnetism; methane; nitrites; nitrogen; nucleobases; oxidation; total nitrogen; wastewater treatment
Abstract:
... Nitrite-dependent anaerobic methane oxidation (N-DAMO) is a newly discovered bioprocess which uses methane as electron donor to reduce nitrite into dinitrogen. It is a promising clean bioprocess for denitrification in wastewater treatment. However, the low reaction rate and slow growth rate of N-DAMO bacteria within NC10 phylum limit the application of the process. In this study, we chose vitamin, ...
DOI:
10.1016/j.watres.2019.05.101