bluuebunny/crossref_metadata_2025_split huggingface dataset:
Red cell salvage in orthopedic surgery
Authors: MUÑOZ MANUEL , CAMPOS ARTURO , MUÑOZ ENCARNACIÓN , CARRERO ANTONIO , CUENCA JORGE , GARCÍA‐ERCE JOSÉ ANTONIO 
Published: July 2006

SUMMARYThe increasing number of surgical procedures has raised the demand for allogeneic blood to a level that often exceeds supply. Moreover, 10% of all transfusions are given in the orthopedic surgery setting, requiring the avoidance of liberal transfusion criteria to further reduce the risk of infection and other complications. As a result, a series of blood‐conservation measures have been developed. In this article, we review the use of autologous transfusion in orthopedic surgery, with a special focus on perioperative red cell salvage.From data reviewed, it can be concluded that perioperative salvage of blood, either intraoperative cell salvage or postoperative cell salvage, seems to be an excellent source of functional and viable red cells, without many of the transfusion‐related risks and with few side effects. The effectiveness of perioperative cell salvage to reduce exposure to allogeneic blood is greatly enhanced by the implementation of a restrictive transfusion protocol and the association with other blood‐sparing strategies [preoperative autologous blood donation (PABD), erythropoietin, intravenous iron], especially in anemic patients. Moreover, perioperative cell salvage may reduce the number of required PABD units or render PABD unnecessary. Finally, although formal cost‐effectiveness studies on perioperative cell salvage are lacking, based on current allogeneic blood transfusion costs, it is generally accepted that the equivalent of at least one unit of blood needs to be recovered for these techniques to be cost‐effective. Therefore, these procedures should be used on a case‐by‐case basis.
INDECOMPOSABLE LINEAR ORDERINGS AND HYPERARITHMETIC ANALYSIS
Authors: MONTALBÁN ANTONIO 
Published: July 2006

A statement of hyperarithmetic analysis is a sentence of second order arithmetic S such that for every Y⊆ω, the minimum ω-model containing Y of RCA0 + S is HYP(Y), the ω-model consisting of the sets hyperarithmetic in Y. We provide an example of a mathematical theorem which is a statement of hyperarithmetic analysis. This statement, that we call INDEC, is due to Jullien [13]. To the author's knowledge, no other already published, purely mathematical statement has been found with this property until now. We also prove that, over RCA0, INDEC is implied by [Formula: see text] and implies ACA0, but of course, neither ACA0, nor ACA 0+ imply it. We introduce five other statements of hyperarithmetic analysis and study the relations among them. Four of them are related to finitely-terminating games. The fifth one, related to iterations of the Turing jump, is strictly weaker than all the other statements that we study in this paper, as we prove using Steel's method of forcing with tagged trees.
Vulnerability in Rural Areas
Authors: Kapoor Sanjeev , Ojha Raj Kumar 
Published: July 2006

In India's developing economy, the rural population is vulnerable to a broad range of risks and crises that directly affect its livelihood. These risks directly affect the level and/or sources of income and productive assets of these households. The study aimed to identify the most common risks and crises that rural households face; ways and means of households' response to such crises and risks; and potential demand for microinsurance in rural areas. Although the study identifies variety of risks and crises, which are faced by rural households in Uttar Pradesh, death, sickness, agriculture and livestock related shocks are ranked high not only in terms of financial pressure experienced by the poor, but also in terms of their frequency of occurrence. The study argues that there is clear demand for providing the poor with insurance services to help them better manage risk both ex ante and ex post. The lessons of microcredit products should be extended to insurance products also.
MOLECULAR STRUCTURES OF MOLYBDENUM AND TUNGSTEN OXIDE TETRACHLORIDES BY GAS ELECTRON DIFFRACTION
Authors: Iijima Kinya , Shibata Shuzo 
Published: July 2006

Abstract
The molecular structures of MoOCl4 and WOCl4 in the gaseous state were determined by electron diffraction. Both molecules were found to have a square-pyramidal structure and the following molecular parameters were obtained by the least-squares method: rg(Mo–Cl) = 2.278 ± 0.003 Å, rg(Mo–O) = 1.670 ± 0.012 Å, and ∠OMoOCl = 103.0 ± 2.3° for MoOCl4; rg(W–Cl) = 2.280 ± 0.003 Å, rg(W–O) = 1.684 ± 0.015 Å, and ∠OWCl = 102.6 ± 1.5° for WOCl4.
CONFORMATIONS OF RACEMIC 8α-METHOXY AND 8β-ACETOXY DERIVATIVES OF 1,1,4aβ-TRIMETHYL-2β-HYDROXY-1,2,3,4,4a,5,6,7,8,9-DECAHYDROPHENANTHRENE AS REVEALED BY X-RAY METHODS, AN EXAMPLE OF UNUSUALLY FLATTENED CONFORMATION OF CYCLOHEXENE RING
Authors: Furusaki Akio , Hamanaka Nobuyuki , Matsumoto Takeshi 
Published: July 2006

Abstract
The conformations of the 8α-methoxy and 8β-acetoxy derivatives of 1,1,4aβ-trimethyl-2β-hydroxy-1,2,3,4,4a,5,6,7,8,9-decahydrophenanthrene have been studied by means of X-ray crystallographic analysis. As a result, it has been found that, in the former substance, the C ring of cyclohexene-type has an unusually flattened conformation and shows an unusual thermal behavior.
TRANSITION-METAL COMPLEXES OF PYRROLE PIGMENTS, VIII, SYNTHESIS AND CHARACTERIZATION OF ACETATOBIS(3,3′,5,5′-TETRAMETHYLDIPYRROMETHENATO)CHROMIUM(III)
Authors: Murakami Yukito , Matsuda Yoshihisa , Iiyama Kiyotaka 
Published: July 2006

Abstract
The reaction of chromium(II) acetate with 3,3′,5,5′-tetramethyldipyrromethene in methanol under nitrogen atmosphere resulted in the formation of a unique mononuclear chromium(III) chelate consisting of metal, dipyrromethene, and acetate at a 1 : 2 : 1 molar ratio. Both ligand-field bands and ESR spectra are consistent with the distorted octahedral coordination geometry (C2) symmetry) of M-cis-O2N4, type.
AN ESR STUDY OF COPPER(II) COMPLEXES WITH β-ALANINE
Authors: Misumi Seizo , Isobe Toshiyuki , Kimoto Shinkichi 
Published: July 2006

Abstract
A single crystal of bis(β-alaninato)copper(II) hexahydrate (Cu(β-ala)2·6H2O) was prepared and measured by ESR. As the dehydration of Cu(β-ala)2·6H2O from the surface of the crystal is well known, the behaviour of the dehydration by three different drying methods was studied by ESR and it was found that the change from the dx2−y2 ground-state to the dz2 ground-state takes place.
AN EMPIRICAL FORMULA FOR ASYMMETRIC GAS CHROMATOGRAPHIC PEAK
Authors: Ohzeki Kunio , Okamura Takashi , Sugawara Masao , Kambara Tomihito 
Published: July 2006

Abstract
It was found that the asymmetric gas chromatographic peak can be described as a normal distribution curve in oblique coordinates. By converting the curve into the rectangular coordinates, we obtained the empirical formula as shown by equation (1).
THE DECARBONYLATION OF METHANOL WITH Ni(0) COMPLEX
Authors: Inoue Yoshio , Hidai Masanobu , Uchida Yasuzo 
Published: July 2006

Abstract
Ni(CO)(PPh3)3 was prepared by treating Ni(COD)2 [COD=1,5-cyclooctadiene] with methanol in the presence of triphenylphosphine and a conjugated diene such as isoprene. The conjugated diene, which was a necessary component of the formation of the complex, was hydrogenated with the residual fragment from methanol, e.g. hydrogen. Together with the complex formation reaction, addition of methanol to the diene was accomplished.
SPIN STATES OF METHYLENES PRODUCED FROM LEAST-MOTION DISSOCIATION OF ETHYLENE
Authors: Kikuchi Osamu 
Published: July 2006

Abstract
Spin states of methylenes produced from least-motion dissociation of ethylene were clarified by a semi-empirical CI method. Three lower-lying 1Ag states of D2h, methylene-dimer at Rcc=∞ were expressed in terms of the valence orbitals of two methylenes, and the states of two methylenes correlating to these states were determined.
THE CRYSTAL AND MOLECULAR STRUCTURE OF MELATONIN, N-ACETYL-5-METHOXYTRYPTAMINE
Authors: Wakahara Akio , Fujiwara Takaji , Tomita Ken-ichi 
Published: July 2006

Abstract
The molecular structure and configuration of melatonin, one of tryptophan metabolites, has been determined by X-ray diffraction method and some structural features are compared with those of related compounds. The structure was solved by the symbolic addition procedure and was refined by block-diagonal least-squares method.
THE CRYSTAL STRUCTURE OF THE MOLECULAR COMPLEX FORMED FROM 4-NITROPYRIDINE N-OXIDE AND HYDROQUINONE IN THE MOLE RATIO 2 : 1
Authors: Shiro Motoo , Kubota Tanekazu 
Published: July 2006

Abstract
Crystals of the molecular complex composed of 4-nitropyridine N-oxide (4NPO) and hydroquinone (HQ) with 2 : 1 molecular ratio, 2(C5H4N2O3)·C6H6O2, crystallized in monoclinic, space group P21\sqrtc, with two formula units in a cell (a = 5.963, b = 14.606, c = 10.157 Å, β = 105°13′). One HQ is connected to two 4NPO molecules by two hydrogen bonds. Molecular arrangement of a sandwich type was not observed between HQ and 4NPO. It was concluded that charge transfer interactions of the π-π type are not operative in the crystal of the complex.
LIBERATION OF AMMONIA FROM α-CIS-ETHYLENEDIAMINE-N,N′-DIACETATO(DIAMMINE)COBALT(III) ION IN CARBONATE BUFFER SOLUTIONS
Authors: Kuroda Kashiro 
Published: July 2006

Abstract
Reaction of the α-cis isomer of ethylenediamine-N,N′-diacetato(diammine)cobalt(III) ion, α-cis-[Co(Co(EDDA)(NH3)2]2, has been examined kinetically in aqueous carbonate buffer solutions. It has been found that the complex releases the coordinated ammonia with first order in concentration of both the complex and hydroxyl ion. It has also been found that the activation energies of the cobalt–nitrogen bond breaking reactions are abnormally large amounting to around 40 kcal.
PHOTOINDUCED REACTIONS. LXIV. REACTION OF α,α′-DIALKYLSTILBENES WITH SINGLET OXYGEN: “ENE” REACTION AND CLEAVAGE TO CARBONYL FRAGMENTS
Authors: Saito Isao , Matsuura Teruo 
Published: July 2006

Abstract
Photosensitized oxygenation (a system generating singlet oxygen) of α,α′-dialkylstilbenes gave exclusively an allylic hydroperoxide, the “ene”reaction product, whereas the introduction of methoxy groups into their para positions causes a competition between “ene” reaction and cleavage to carbonyl fragments. In the latter case, a solvent dependence on the competition was observed.
THE REACTIVITY OF DIAZO KETONES. III. THE THERMAL OR PHOTOCHEMICAL REACTION OF AZIBENZIL WITH MOLECULAR OXYGEN
Authors: Tanaka Masanobu , Nagai Toshikazu , Tokura Niichiro 
Published: July 2006

Abstract
Thermal or photochemical reaction of azibenzil (I) with molecular oxygen in benzene gave tetraphenylglycolide (II), instead of benzil or a cyclic peroxide, together with bis-benzilketazine (III) and diphenylketene (IV). The formation of II did not occur from III or IV, suggesting that phenyl benzoyl carbene reacted with molecular oxygen followed by phenyl migration.
PHOTOCHEMICAL REACTIONS OF AROMATIC ESTERS. V. PHOTOCYCLOADDITIONS OF TRIMESIC ACID TRIESTERS TO CYCLOOCTENE
Authors: Katsuhara Yutaka , Nakamura Toshiomi , Shimizu Akira , Shigemitsu Yasuo , Odaira Yoshinobu 
Published: July 2006

Abstract
Irradiation of a benzene solution of trimesic acid triesters and cyclooctene yielded exclusively 1:1 cycloadducts without formation of oxetane derivatives. The photoadducts were shown to be tetracyclo[6.6.0.0.2,703,6]tetradec-4-ene derivatives. The reactive species of the present reaction was suggested to be an exciplex.
THE EFFECT OF BASE STRENGTH OF SCHIFF BASES ON THEIR CATALYTIC HYDROGENATION WITH BIS(DIMETHYLGLYOXIMATO)COBALT(II)
Authors: Yamaguchi Tatsuaki , Nakayama Motoharu , Tsumura Touru 
Published: July 2006

Abstract
Kinetic measurements were reported for the catalytic hydrogenation of certain Schiff bases with bis(dimethylglyoximato)cobalt(II). The influences of substituents of Schiff bases upon the reactivity were shown to increase with the basicity, which were quite different pattern with that of the hydrogenation with pentacyanocobaltate.
THE PHOTOADDITION OF STILBENE TO 1-METHYLPYRROLE. THE EFFECT OF PROTIC SOLVENTS
Authors: Kubota Tadatoshi , Sakurai Hiroshi 
Published: July 2006

Abstract
Irradiation of an acetic acid solution of trans-stilbene and 1-methylpyrrole afforded 1-methyl-2-(1,2-diphenylethyl)pyrrole (I), 1-methyl-3-(1,2-diphenylethyl)pyrrole (II), and 1,2-diphenylethyl acetate (III), though irradiation of stilbene in neat 1-methylpyrrole gave complex mixtures.
NEW SYNTHESIS OF trans-ISOFLAVAN-4-OL
Authors: Arai Mannosuke , Kabuto Kuninobu , Horino Hiroshi , Inoue Naoto 
Published: July 2006

Abstract
trans-Isoflavan-4-ol was synthesized from chromene with phenylpalladium chloride in one step. Treatment of the alcohol with NBS gave isoflavone.
MOLECULAR STRUCTURE OF γ-GUANIDINO-β-HYDROXY PROPANE SULFONIC ACID DETERMINED BY X-RAY METHOD
Authors: Kim Yang Bae , Wakahara Akio , Fujiwara Takaji , Tomita Ken-ichi 
Published: July 2006

Abstract
The molecular structure of γ-guanidino-β-hydroxy propane sulfonic acid was determined by X-ray diffraction method and we described some structural features compared with other related compounds.
ON THE FIRST BANDS OF THE PHOTOELECTRON SPECTRA OF AMINES, ALCOHOLS AND MERCAPTANS
Authors: Ogata Hitoshi , Onizuka Hatsuki , Nihei Yoshimasa , Kamada Hitoshi 
Published: July 2006

Abstract
The HeI photoelectron spectra of methylamine, methyl alcohol and methyl mercaptan were measured in gas phase. Theoretical calculations were performed by the CNDO/2 method. An interesting relationship was found between observed band widths of the first bands and calculated coefficients of the molecular orbitals.
MOLECULAR ABSORPTION SPECTRUM OF InCl IN FLAME
Authors: Haraguchi Hiroki , Fuwa Keiichiro 
Published: July 2006

Abstract
Molecular absorption spectrum of InCl was observed in the flame for the first time at the wavelengths near 2670 Å, when 0,2 M indium in 2 M HCl aqueous solution was aspirated into the air-acetylene flame. The absorption band of InO was, also, observed near 2730 Å in the same spectrum.
NEW ACTIVE SULFUR TRANSFER REAGENTS: ARENETHIOSULFENYL CHLORIDES. A CONVENIENT SYNTHESIS OF EPISULFIDES FROM OLEFINS
Authors: Fujisawa Tamotsu , Kobori Takeo 
Published: July 2006

Abstract
Arenethiosulfenyl chlorides, readily prepared from the corresponding thiophenols and sulfur dichloride, reacted with olefins to give disulfide adducts, which could easily be transformed into episulfides in good yields by treatment with sodium amide or sulfide. The episulfidation of olefins has been shown to be stereospecific, since trans- and cis-2-butenes afforded the corresponding trans and cis episulfides, respectively.
METABRIDGED TROPONE AND PHENOLS
Authors: Hiyama Tamejiro , Ozaki Yoshimi , Nozaki Hitosi 
Published: July 2006

Abstract
Bromination, dehydrobromination and subsequent dehydrogenation of bicyclo[9.4.1]hexadecan-16-one afford [9] (2,7)troponophane, whereas the same treatment of bicyclo[9.3.1]pentadecan-15-one gives 15-hydroxy[9]metacyclophane. 15-Hydroxy-12-methyl[9]metacyclophane is prepared by dehydrogenation of 13-methylenebicyclo[9.3.1]pentadecan-15-one. PMR study of these compounds suggests that the nonamethylene chain is restricted to reside in the one side of the aromatic rings.
THE CRYSTAL AND MOLECULAR STRUCTURE OF 1-METHYL-5-BROMOURACIL AND SOME STRUCTURAL CONSIDERATIONS ON THE MUTATION MECHANISM
Authors: Mizuno Hiroshi , Morita Kiyomi , Fujiwara Takaji , Tomita Ken-ichi 
Published: July 2006

Abstract
A thymine analogue,1-methyl-5-bromouracil, has been investigated by X-ray diffraction analysis. Its crystal structure is isomorphous with 1-methylthymine.
QUATERNARY AMMONIUM SALTS AS A QUASI-STABLE INTERMEDIATE IN TRIETHYLENELIAMINE-CATALYZED AMINOLYSIS OF PHENYL N-PHENYLCARBAMATES WITH ANILINE
Authors: Furuya Yoshiaki , Itoho Kazuo , Shibata Osamu , Ohkubo Katsutoshi 
Published: July 2006

Abstract
An identification of quaternary ammonium salts formed as a quasi-stable intermediate in the course of the triethylenediamine-catalyzed aminolysis of phenyl N-phenylcarbamates with aniline was performed by UV spectroscopic measurements and semiempirical ASMO-SCF calculations.
APPLICATION OF TRIS(DIPIVALOMETHANATO)EUROPIUM(III) PMR SHIFT REAGENT TO 4-AZA-HOMOADAMANTAN-5-ONE AND 4-AZA-1,1-BISHOMOADAMANTAN-5-ONE
Authors: Sasaki Tadashi , Eguchi Shoji , Mizutani Masato 
Published: July 2006

Abstract
The pmr spectra of compounds in the title were found to be analyzable with the aid of a pmr shift reagent, Eu(dpm)3. The shift value of each proton was discussed from the characteristic europium shift parameter S value.
The results supported a complex formation between Eu(dpm)3 and the lactams on the amide oxygen side rather than the nitrogen, and also untwisted forms of these ring systems as for–NHCO–and–NHCOCH2–moieties.
THE STEREOCHEMISTRY OF THE INTERMEDIATE VINYLIC RADICAL IN THE RADICAL CYCLIZATION OF 6-HALO-1-PHENYL-1-HEXYNES. EVIDENCE FOR LINEAR 1-PHENYLVINYLIC RADICALS
Authors: Ohnuki Takashi , Yoshida Masayuki , Simamura Osamu , Fukuyama Masaru 
Published: July 2006

Abstract
Reaction of 6-bromo-1-phenyl-1-hexyne-6,6-d2 with n-butyllithium gave (E)-and (Z)-2-benzylidenecyclopentane-1,1-d2 in equal amounts by way of radical cyclization, and 6-iodo-1-phenyl-1-hexyne-3,3-d2 with tri-n-butyltin hydride afforded similarly the same product mixture. These results are explained in terms of a linear 1-phenylvinylic radical with an sp-hybridized radical centre and a half-filled p orbital conjugated with the phenyl group.
PHOTO-DOPING OF METAL INTO CHALCOGENIDE GLASSES
Authors: Shimizu Isamu , Kokado Hiroshi , Inoue Eiichi 
Published: July 2006

Abstract
The photo-doping length of Ag reached more than 20μm in the chalcogenide glass (As16S80Te4) when the Ag layer of 1500A in thickness on the glass was doped by exposure to light. The distribution profiles of the photo-doped Ag in the chalcogenide glass layer showed its own characteristics.
ENZYMATIC AND NONENZYMATIC HYDROLYSES OF THE HETERO-AROMATIC PHOSPHATES
Authors: Murakami Yukito , Sunamoto Junzo , Gondo Chieko 
Published: July 2006

Abstract
Enzymatic hydrolyses of 3-pyridyl, 8-quinolyl, 2-pyridylpropyl, and phenyl phosphates were studied in the presence of potato acid phosphatase at 37°C while an ionic strength of the aqueous reaction system was maintained at 0.10 with potassium chloride. The kinetic data were analyzed in terms of the Michaelis-Menten model. The hydrophobic interaction was found to prevail over the polar interaction in the ES-complex formation. A LFER trend observed in the enzymatic hydrolyses suggests that the electrostatic interaction between substrate and enzyme under hydrophobic atmosphere in the enzyme-recess contributes to the profound rate enhancement.
INVESTIGATION ON LOW-SPIN COBALT(II) COMPLEXES. II. AN ESR STUDY OF THE SCHIFF BASE COMPLEXES OF THE PLANAR cis-[CoN2O2] TYPE
Authors: Nishida Yuzo , Kida Sigeo 
Published: July 2006

Abstract
ESR spectra of nine Schiff base complexes of the planar cis-[CoN2O2] type were measured in host crystals of the nickel(II) homologues. The spectra showed rhombic patterns, the three eight-lined hyperfine structures due to 59Co being resolved. The theoretical discussion on these data led to the conclusion that in the ground state an unpaired electron hauses in dyz(or dxz) orbital.
STRUCTURE OF HYPACRONE, A NOVEL SECO-ILLUDOID, POSSIBLE BIOLOGICAL PRECURSOR OF PTEROSINS IN HYPOLEPIS PUNCTATA METT.
Authors: Hayashi Yuji , Nishizawa Mugio , Sakan Takeo 
Published: July 2006

Abstract
Further investigation of Hypolepis punctata results in the isolation of a novel seco-illudane sesquiterpenoid, hypacrone, as an acrid principle of the plant. This compound is also shown to be a biological precursor of pterosins.
Solubility and Crystallization-controlled Synthesis of Lamellar Mesostructured Calcium Phosphate in the Ethanol/Water System
Authors: Ikawa Nobuaki , Oumi Yasunori , Kimura Tatsuo , Ikeda Takuji , Sano Tsuneji 
Published: July 2006

Abstract
A novel lamellar mesostructured calcium phosphate was synthesized at room temperature by using n-hexadecylamine in the EtOH/H2O system, which controlled the solubility of calcium source and the preferential formation of crystalline calcium phosphate species.
Metathesis Approach to Linkage of Two Tetraplatinum Cluster Units: Synthesis, Characterization, and Dimerization of [Pt4(μ-OCOCH3)7(μ-OCO(CH2)nCH=CH2)] (n = 0–3)
Authors: Ohashi Masato , Yagyu Akihiro , Xu Qinghong , Mashima Kazushi 
Published: July 2006

Abstract
Reaction of [Pt4(μ-OCOCH3)8] (1) with 1 equiv of acrylic acid led to the selective monosubstitution of one of the four in-plane acetates in 1, affording [Pt4(μ-OCOCH3)7(μ-OCOCH=CH2)] (2a), whereas treatment with excess amounts of acrylic acid resulted in a full-substitution of four in-plane acetates, yielding [Pt4(μ-OCOCH3)4(μ-OCOCH=CH2)4] (3). Similarly, monosubstituted heptaacetate complexes [Pt4(μ-OCOCH3)7{μ-OCO(CH)nCH=CH2}] (2b–2d: n = 1–3) were prepared. Catalytic intermolecular coupling reactions of 2c and 2d assisted by Grubbs’ catalysts gave the desired dimers [{Pt4(μ-OCOCH3)7}2{μ-OCO(CH2)nCH=CH(CH2)n(μ-OCO)}] (6c: n = 2; 6d: n = 3).
Modification of the n-Si(111) Surface with Alkyl Chains Having the Terminal C=C Double Bond
Authors: Ohashi Masato , Takabayashi Susumu , Mashima Kazushi , Nakato Yoshihiro 
Published: July 2006

Abstract
We synthesized a series of the n-Si(111) electrodes covered with alkyl chains having the terminal C=C double bond, and found that they gave high VOC as well as high stability in the electrolyte when electrodeposited with Pt nanoparticles, whose size was able to be controlled by the chain length of the alkyl group.
Synthesis of Ni Nanoparticles by Reduction of NiO Prepared with a Flow-through Supercritical Water Method
Authors: Sue Kiwamu , Suzuki Akira , Suzuki Muneyuki , Arai Kunio , Ohashi Tomotsugu , Matsui Keitaro , Hakuta Yukiya , Hayashi Hiromichi , Hiaki Toshihiko 
Published: July 2006

Abstract
Synthesis of Ni nanoparticles having an average diameter of 8.1 nm by reduction of NiO nanoparticles was carried out at 673 K. HCOOH was used as a reductant, which decomposes to CO and/or H2 at higher temperatures. NiO nanoparticles having an average diameter of 3.8 nm were obtained from Ni(NO3)2 + KOH aqueous solution by a flow-through supercritical water method at 673 K and 30 MPa. Effect of HCOOH concentration on particle size and saturation magnetization was investigated.