Filters
Results 1 - 10 of 1360
Results 1 - 10 of 1360.
Search took: 0.032 seconds
Sort by: date | relevance |
Wang, Hongxin; Yoda, Yoshitaka; Kamali, Saeed; Zhou, Zhao-Hui; Cramer, Stephen P., E-mail: hxwang2@lbl.gov, E-mail: hxwang2@lbl.gov2012
AbstractAbstract
[en] The real sample temperatures during the nuclear resonant vibrational spectroscopy on biological samples have been assessed and significantly reduced (116 → 52 K) by improving the sample-loading procedures. There are several practical and intertangled issues which make the experiments of nuclear resonant vibrational spectroscopy (NRVS) on biological samples difficult to perform. The sample temperature is one of the most important issues. In NRVS the real sample temperatures can be very different from the readings on the temperature sensors. In this study the following have been performed: (i) citing and analyzing various existing NRVS data to assess the real sample temperatures during the NRVS measurements and to understand their trends with the samples’ loading conditions; (ii) designing several NRVS measurements with (Et_4N)[FeCl_4] to verify these trends; and (iii) proposing a new sample-loading procedure to achieve significantly lower real sample temperatures and to balance among the intertangled experimental issues in biological NRVS measurements
Primary Subject
Source
S0909049512001380; Available from http://dx.doi.org/10.1107/S0909049512001380; Available from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3284345; PMCID: PMC3284345; PMID: 22338688; PUBLISHER-ID: kt5030; OAI: oai:pubmedcentral.nih.gov:3284345; Copyright (c) Hongxin Wang et al. 2012; This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
External URLExternal URL
AbstractAbstract
[en] The crystalline parameters α and c of the FeCl2 hexagonal cell have been measured by X-ray diffraction on a powdered specimen. Here we report the values of these parameters at 77 and 300 K, and also their thermal variations between 4.2 and 30 K. The relative variations a30-a4.2/a4.2 and c30-c4.2/c4.2 are (1.1±0.4) x 10-3 and -(7.2±0.6) x 10-4 respectively. When the temperature goes below the Neel temperature (TT≅23.8 K), the parameters a and c display different kinds of variations. This change is attributed to the magneto-elastic coupling and by using previous experimental data obtained on FeCl2 submitted to mechanical stresses, we determine the derivatives of the magnetic interactions (including crystalline field) versus the diagonal crystal strain tensor components. We estimate the value of the elastic constant C13 to be 1.6 erg/cm3. Moreover the experimental results at our disposal are sufficient for checking the magnetic studies of FeCl2 submitted to mechanical stresses
Record Type
Journal Article
Journal
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Khristova, R.; Vanmen, M.
National Aeronautics and Space Administration, Washington, DC (USA)1976
National Aeronautics and Space Administration, Washington, DC (USA)1976
AbstractAbstract
[en] Based on considerations of principles and experimental data, the interference of sulfate ions in poteniometric titration of EDTA with FeCl3 was confirmed. The method of back complexometric titration of molybdenum of Nonova and Gasheva was improved by replacing hydrazine sulfate with hydrazine hydrochloride for reduction of Mo(VI) to Mo(V). The method can be used for one to tenths of mg of molybdenum with 0.04 mg standard deviation. The specific method of determination of molybdenum in molybdenite concentrates is presented
Primary Subject
Source
1976; 13 p; NASA-TM--88460; NAS--1.15:88460; Available from NTIS, PC A02/MF A01; Translated from God. Sofii. Univ., Khim. Fak.; 243-251(1976).
Record Type
Report
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] In this study, commercially available cellulose membranes were hybridized with conjugated polymer via vapor-phase polymerization using pyrrole and iron chloride as a monomer and oxidant, respectively. The iron (III) chloride layer dip-coated on the hydrophilic cell ulose surface oxidized the vaporized pyrrole monomer leading to the polypyrrole-cellulose hybrid membrane. The conductivity of hybrid membrane was optimized by varying the oxidant concentration and the monomer vapor exposure time. The various surface characterizations of polypyrrole-cellulose hybrid membrane show that the conductive polypyrrole layer was uniformly deposited onto the surface of cellulose fibrous networks unlike the polypyrrole-nylonhybrid membrane prepared in the similar way. The polypyrrole-incorporated cellulose networks exhibits steeper electrical conductance increase over the vertical pressure than its nylon counterpart. Our result suggests that the polypyrrole-cellulose hybrid membrane can be applicable for a disposable high-load pressure sensor.
Primary Subject
Source
26 refs, 4 figs
Record Type
Journal Article
Journal
Bulletin of the Korean Chemical Society; ISSN 0253-2964;
; v. 37(2); p. 179-183

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Direct chlorination of aluminum is part of the HALOX project, which deals with the halogenation of the sheaths of the spent fuel, consisting of an aluminum-based alloy. Iron is one of the important nuclear fuel elements from a radiological point of view, since after irradiation it converts to a radioactive isotope, 55Fe, which decays by electronic capture with a semi-disintegration period of 2.73 years. This work focuses on the reaction of the iron-aluminum binary alloys and of equivalent amounts of pure metals, with gaseous chlorine in order to study the interactions between them and the possibility of their separation. The chlorination was carried out in a flow of 2 liters/hour of gaseous chlorine and in a temperature range of 150oC to 300oC. The incidence of the thermal treatment temperatures on the characteristics of the chlorides that were formed was analyzed. The characterization techniques used were: energy dispersive spectroscopy (EDS) and x-ray diffraction (XRD). The structure's evolution was studied by sweep electronic microscopy (SEM), Given that the EDS only provides a semi-quantitative form of the composition and does not detect concentrations of elements below 1%, the products had to be quantified using such analytical techniques as: atomic absorption, spectrophotometry, gravimetry and volumetry (CW)
Original Title
Estudio de la separativa de los cloruros de hierro y aluminio, por cloracion directa de los metales y de la aleacion binaria
Primary Subject
Source
Universidad de la Serena (ULS), La Serena (Chile); Sociedad de Metalurgia y Materiales (SOCHIM) (Chile); Sociedad Argentina de Metalurgia y Materiales (SAM), Buenos Aires (Argentina); 956 p; Nov 2004; p. 171-176; Congress CONAMET/SAM 2004; Congreso CONAMET/SAM 2004; La Serena (Chile); 3-5 Nov 2004; Available from Library of CCHEN
Record Type
Miscellaneous
Literature Type
Conference
Country of publication
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
Burylev, B.P.; Mironov, V.L.
6. all-union conference on physical chemistry of ionic melts and solid electrolytes. Part 11976
6. all-union conference on physical chemistry of ionic melts and solid electrolytes. Part 11976
AbstractAbstract
No abstract available
Original Title
Davlenie nasyshchennogo para smesej khloridov kadmiya i svintsa s khloridami margantsa, zheleza i kobal'ta
Primary Subject
Source
AN SSSR, Moscow. Nauchnyj Sovet po Fizicheskoj Khimii Ionnykh Rasplavov i Tverdykh Ehlektrolitov; AN Ukrainskoj SSR, Kiev. Inst. Obshchej i Neorganicheskoj Khimii; p. 112-113; 1976; 6. all-union conference on physical chemistry of ionic melts and solid electrolytes; Kiev, Ukrainian SSR; Sep 1976; 2 refs.; published in summary form only.
Record Type
Miscellaneous
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Unskinned chicken meat’s cholesterol consisting of thigh, breast, and wing meat were determined inter-daily by ferric chloride reagent spectrophotometric methods. The pretreatments before cholesterol analysis were conducted which involved with lipid extraction, saponification, and subsequent extraction of unsaponified matter. Afterwards, spectrophotometry was carried out. For understanding precision of quantification, the total cholesterol was measured inter-daily in which the difference of measurement time were one day for each same part of chicken meat. The research showed unskinned thigh meat had significantly higher total cholesterol 186.19 mg/100 g as compared to breast, and wing meat (156.05 mg/100g and 135.38 mg/100 g; p<0.01 for both). Inter-daily spectrophotometry analysis insignificantly affected on thigh, breast, and wing meat’s cholesterol content. This method can become solution for analysis time limitation problem in cholesterol spectrophotometric analysis. (paper)
Primary Subject
Source
International Conference on Food Science and Engineering; Central Java (Indonesia); 25-26 Sep 2018; Available from http://dx.doi.org/10.1088/1757-899X/633/1/012048; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
IOP Conference Series. Materials Science and Engineering (Online); ISSN 1757-899X;
; v. 633(1); [5 p.]

Country of publication
CHEMICAL REACTIONS, CHLORIDES, CHLORINE COMPOUNDS, DECOMPOSITION, DISPERSIONS, HALIDES, HALOGEN COMPOUNDS, HOMOGENEOUS MIXTURES, HYDROLYSIS, HYDROXY COMPOUNDS, IODIDES, IODINE COMPOUNDS, IRON COMPOUNDS, IRON HALIDES, IRON IODIDES, LYSIS, MIXTURES, ORGANIC COMPOUNDS, SOLVOLYSIS, STEROIDS, STEROLS, TRANSITION ELEMENT COMPOUNDS
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Nguyen Van Tien; Le Thi Mai Huong; Vu Xuan Minh; Le Trong Lu; Nguyen Tuan Dung
Vietnam Conference on Nuclear Science and Technology VINANST-13. Agenda and Abstracts2019
Vietnam Conference on Nuclear Science and Technology VINANST-13. Agenda and Abstracts2019
AbstractAbstract
[en] Spent pickling liquor containing almost FeCl2 is a considered hazardous waste because of its very high level of acidity and high metal concentration, and the conventional neutralization method regenerates an excessive quantity of sludge that poses a serious problem concerning to the landfill disposal and risk of ground water contamination. Therefore, recovery of spent pickling liquor is necessary. Several approaches have been investigated for spent pickling liquor recovery, but they are generally costly and lead to produce various iron salts or oxides which have a limited value. In the present study, we explore the potential of using spent pickling liquor and FeCl2 solution as iron precursor for the synthesis of magnetic nanoparticles. Here, Fe3O4 nanoparticles were prepared easily by oxidation-precipitation from spent hydrochloride acid pickling liquors in aqueous saturated solution of calcium hydroxide at room temperature, in the air, and under suitable speed of rotation. The FT-IR, XRD and TEM results shown that monodisperse Fe3O4 nanoparticles in the size range of 10-40 nm were obtained, with a high level of crystalline. The BET surface area of particles from spent pickling liquor was about 46 m2g-1, and from FeCl2 salt was about 24 m2 g-1. The synthesized Fe3O4 nanoparticles exhibited the super paramagnetic behavior with relatively high saturation magnetization, from spent pickling liquor about Ms=73 emu g-1 and from FeCl2 salt was higher, about 83 emu g-1. The tested adsorbed capacity of As (V) of particles from spent pickling liquor was about 90 mg As/g Fe3O4, and from FeCl2 salt was about 42 mg As/g Fe3O4. This proves that some impurities in the pickling solution such as Mn, C ... help to develop the surface and adsorption capacity. (author)
Primary Subject
Source
Vietnam Atomic Energy Institute, Hanoi (Viet Nam); International Centre of Physics, Vietnam Academy of Science and Technology, Hanoi (Viet Nam); Quang Ninh Department of Science and Technology (Viet Nam); 266 p; Aug 2019; 9 p; VINANST-13: 13. Vietnam Conference on Nuclear Science and Technology; Hoi nghi Khoa hoc va Cong nghe Hat nhan Toan quoc lan thu 13; Ha Long City, Quang Ninh (Viet Nam); 7-9 Aug 2019; Also available from Division of Information, Department of Planning and R & D Management, VINATOM; 21 refs, 7 figs, 1 tab
Record Type
Miscellaneous
Literature Type
Conference
Report Number
Country of publication
Reference NumberReference Number
Related RecordRelated Record
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Recently iron nanoparticles have become a very promising repair agent in the in-situ remediation of groundwater. However, the mechanism of the transport of green synthetic iron nanoparticles in porous media is less understood. In this paper, iron nanoparticles were synthesized from the Hizikia Fusiforme extracts and ferric chloride solution. Transport and deposition of green synthetic iron nanoparticles in porous media were investigated through sand column experiments and effects of injecting concentration and flow velocity were evaluated on the transport of iron nanoparticles. The results showed that deposition of iron nanoparticles in porous media were due to the irreversible attachment of sand grains and the straining of pore throats. The injecting concentration had a significant effect on the transport of iron nanoparticles, which were negatively correlated. The effluent concentration of iron nanoparticles was unaffected by the flow velocity at low injecting concentrations, however, the flow velocity was proportional to the deposition rate of iron nanoparticles. Moreover, the greater the flow velocity was, the more uniform the spatial distribution of iron nanoparticles in the sand column was. (paper)
Primary Subject
Source
EPPCT 2018: 1. International Conference on Environment Prevention and Pollution Control Technology; Tokyo (Japan); 9-11 Nov 2018; Available from http://dx.doi.org/10.1088/1755-1315/199/3/032052; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Literature Type
Conference
Journal
IOP Conference Series: Earth and Environmental Science (Online); ISSN 1755-1315;
; v. 199(3); [6 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The bulk Si-O-C ceramics were prepared by polymer derived ceramics (PDCs) route using polysiloxane as precursor and their properties were investigated for electromagnetic wave absorbing in the frequency range of 12.4–18 GHz (Ku-band). It was found that the catalytic pyrolysis can enhance substantially the absorbing properties by in situ formation of turbostratic carbon network, ordered carbon, and multi-wall carbon nanotubes. The matching thickness of sample containing 1.5 wt% FeCl3 (FPSO-1.5) is 2.2 mm, and its reflection loss exceeds −10 dB in the whole Ku-band with an absorption peak of −35.48 dB at 14.16 GHz. For sample containing 1.5 wt% FeCl3, its absorption peak increases to −15.78 dB, but its matching thickness decreases significantly to 2.2 mm. The polymer derived Si-O-C ceramics could be used as excellent electromagnetic functional devices working in harsh environments. (paper)
Primary Subject
Secondary Subject
Source
Available from http://dx.doi.org/10.1088/2053-1591/aaaf5d; Country of input: International Atomic Energy Agency (IAEA)
Record Type
Journal Article
Journal
Materials Research Express (Online); ISSN 2053-1591;
; v. 5(2); [11 p.]

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
1 | 2 | 3 | Next |