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Structure and transport properties of zirconia crystals co-doped by scandia,ceria and yttria

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Journal of Materiomics 2019年第2期5卷 273-279页

作者： D.A.Agarkov M.A.Borik S.I.Bredikhin I.N.Burmistrov G.M.eliseev V.A.Kolotygin A.V.Kulebyakin I.e.Kuritsyna e.e.Lomonova F.O.Milovich V.A.Myzina P.A.Ryabochkina N.Yu.Tabachkova T.V.Volkova Institute of Solid State Physics RAS 2 Academician Osipyan Str.142432ChernogolovkaMoscow Distr.Russia Moscow Institute of Physics and Technology Institutsky Lane 9141700DolgoprudnyMoscow DistrictRussia A.M.Prokhorov General Physics Institute Russian Academy of Sciences Vavilov Str.38119991MoscowRussia National University of Science and Technology(MISIS) Leninskiy Prospekt 4119049MoscowRussia Ogarev Mordovia State University 430005SaranskRussian Federation

This work is a study of the effect of co-doping(ZrO_(2))_(0.9)(Sc_(2)O_(3))_(0.1)solid solution with yttria and/or ceria on the phase composition,local structure and transport properties of the *** solid solution crystals were grown using directional melt crystallization in cold *** show that ceria co-doping of the crystals does not stabilize the high-temperature cubic phase in the entire crystal bulk,unlike yttria *** co-doping of the(ZrO_(2))_(0.9)(Sc_(2)O_(3))_(0.1)crystals increases their conductivity,whereas the addition of 1 mol.%yttria tangibly reduces the *** co-doping of the(ZrO_(2))0.9(-Sc_(2_O_(3))0.1 crystals with ceria and yttria changes the conductivity but *** spectroscopy of the local structure of the crystals identified different types of optical *** found that the fraction of the trivalent cations having a vacancy in the first coordination sphere in the ceria co-doped crystals is smaller compared with that in the yttria co-doped crystals.

关键词： Single crystals Solid oxide fuel cell Solid solutions Ionic conducting materials ZrO_(2)-Sc_(2)O_(3)-CeO_(2)-Y_(2)O_(3)

Abnormal skeletal metabolism and its changes after decopper therapy in patients with Wilson disease

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Neural Regeneration Research 2006年第7期1卷 626-629页

作者： Guang'e Yang Minfan Hong Bin Yang Renmin Yang Xun Wang Department of Neurology Affiliated Hospital of Institute of Neurology Anhui College of Traditional Chinese MedicineHefei 230061Anhui ProvinceChina Department of NeurologyAffiliated Hospital of Institute of Neurology Anhui College of Traditional Chinese MedicineHefei 230061Anhui ProvinceChina Department of NeurologyAffiliated Hospital of Institute of Neurology Anhui College of Traditional Chinese MedicineHefei 230061Anhui ProvinceChina Department of NeurologyAffiliated Hospital of Institute of Neurology Anhui College of Traditional Chinese MedicineHefei 230061Anhui ProvinceChina Department of NeurologyAffiliated Hospital of Institute of Neurology Anhui College of Traditional Chinese MedicineHefei 230061Anhui ProvinceChina

BACKGROUND: Researches indicate that patients with Wilson disease (WD) have abnormal skeletal metabolism, which is induced by various factors. OBJeCTIVe: To probe into the changing characteristics of abnormal skeletal metabolism in WD patients and observe the effect of decopper therapy. DeSIGN: Case-contrast and self-control study. SeTTING: Department of Neurology, Affiliated Hospital of Neurological Institute, Anhui College of Traditional Chinese Medicine. PARTICIPANTS: A total of 35 patients with WD including 21 males and 14 females aged from 10 to 42 years with the mean age of (20±8) years were selected from Department of Neurology, Affiliated Hospital of Neurological Institute, Anhui College of Traditional Chinese Medicine from September 2000 to February 2001. All the patients were in compliance with the diagnostic criteria: history of family heredity; cone symptoms in vitro, physical sign or liver symptoms; positive Kayser-Fleischer ring; serum copper protein er oxidase e copper > 1.6 μmol.24 hours; liver copper > 250 μg/g (dry weight). The control group was selected from 25 cases of health individuals including 13 males and 12 females aged from 16 to 35 years with the mean age of (22±6) years. All patients who participated in the study were informed first and consented. MeTHODS: Patients in treatment group were treated with venous injection of 1.0 g sodium dimercaptosulfonate, once a day for totally 6 successive days. And then, patients rested for 2 days. This procedure mentioned above was regarded as a course, and the treatment lasted for 4-8 courses. Before and after injection of sodium dimercaptosulfonate, serum calcitonin (CT), osteocalcin (BGP), parathyroid hormone (PTH) and 1,25-(OH)2VitD3 were measured with radio-immunity method; blood, urine calcium, phosphorum and urine creatinine were measured with biochemical analyzer; urine dihydropyrimidine dehydrogenase(DPD) was detected with enzyme-immunity method; bone mineral den

关键词： Wilson Abnormal skeletal metabolism and its changes after decopper therapy in patients with Wilson disease

Phase equilibrium modeling of incipient charnockite formation in NCKFMASHTO and MnNCKFMASHTO systems:A case study from Rajapalaiyam,Madurai Block,southern India

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Geoscience Frontiers 2012年第6期3卷 801-811页

作者： Takahiro endo Toshiaki Tsunogae M.Santosh e.Shaji Graduate School of Life and environmental Sciences University of Tsukuba Department of Geology University of Johannesburg Division of Interdisciplinary Science Faculty of ScienceKochi University China University of Geosciences(Beijing) Department of Geology University of KeralaKariyavattom

Incipient charnockites represent granulite formation on a mesoscopic scale and have received considerable attention in understanding fluid processes in the deep crust. Here we report new petrological data from an incipient charuockite locality at Rajapalaiyam in the Madurai Block, southern India, and discuss the petrogenesis based on mineral phase equilibrium modeling and pseudosection analysis. Rajapalaiyam is a key locality in southern India from where diagnostic mineral assemblages for ultrahigh-temperature （UHT） metamorphism have been reported. Proximal to the UHT rocks are patches and lenses of charnockite （Kfs＋Qtz ＋Pl＋ Bt ＋ Opx＋ Grt ＋Ilm） occurring within Opx-free Grt-Bt gneiss （Kfs ＋Pl ＋ Qtz ＋ Bt ＋ Grt ＋ Ilm ＋ Mt） which we report in this study. The application of mineral equilibrium modeling on the charnockitic assemblage in NCKFMASHTO system yields a p-T range of 820 ℃ and -9 kbar. Modeling of the charnockite assemblage in the MnNCKFMASHTO system indicates a slight shift of the equilibrium condition toward lower p and T （- 760 ℃ and - 7.5 kbar）, which is consistent with the results obtained fiom geothermobarometry （710--760 ℃, 6.7-7.5 kbar）, but significantly lower than the peak temperatures （〉1000 ℃） recorded from the UHT rocks in this locality, suggesting that charnockitization is a post-peak event. The modeling of 7 versus mol.r H2O content in the rock （M（H2O）） demonstrates that the Opx-bearing assemblage in charnockite and Opx- free assemblage in Grt-Bt gneiss are both stable at M（H2O） = 0.3 mol.--0.6 mol., and there is no significant difference in water activity between the two domains. Our finding is in contrast to the previous petrogenetic model of incipient charnockite formation which envisages lowering of water activity and stabilization of orthopyroxene through breakdown of biotite by dehydration caused by the infiltration of CO2-rich fluid. T-XFe3＋（= Fe2O3/（FeO ＋ Fe2O3） in mol.） pseudosections suggest that the oxidation condition of the rocks pl

关键词： Incipient charnockite Granulite Pseudosection Reduced fluid Petrology Southern India

Purinergic contraction of the rat vas deferens in L-NAMe-induced hypertension：effect of sildenafil

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Asian Journal of Andrology 2010年第3期12卷 415-421,I0012页

作者： Serap Gur Suresh C. Sikka Gillian e. Knight Geoffrey Bumstock Wayne J.G. Hellstrom Department of Urology Tulane University Health Sciences Center New Orleans LA 70112 USA Autonomic Neuroscience Centre Royal Free and University College Medical School Rowland Hill Street London NW32PF UK

Hypertension （HTN） is a risk factor for erectile dysfunction, but its effect on vas deferens （VD） contractility and the ejaculatory response has not been delineated. NG-nitro-L-arginine methyl ester （L-NAMe）, a nitric oxide synthase inhibitor, was used for induction of nitric oxide （NO）-deficient HTN. Our aim was to evaluate the effects of L-NAMe-induced HTN on rat VD contractility and to determine whether sildenafil affects VD contractility. A total of 36 male rats were divided into （1） control, （2）L-NAMe-HTN, （3） sildenafil treated L-NAMe-HTN groups. Group 2 was treated with L-NAMe （40 mg kgI per day） in drinking water for 4 weeks. Group 3 received sildenafil （1.5 mg kg^-1 per day, by oral gavage） concomitantly with L-NAMe. The prostatic portion of the VD was subjected to electrical field stimulation （eFS, 1-20 Hz）, and the P2X1 agonist α,β-methylene ATP （α,β meATP, 100 μmol.L^-1-1 μmol.L-1） and the al-adrenoceptor agonist phenylephrine （Phe, 100 μmol.L^-1-1 mmol.L^-1） were used to construct concentration-response curves. These experiments were repeated in the presence of P2X receptor antagonist, pyridoxalphosphate-6-azophenyl-2＇,4＇-disulfonic acid （PPADS, 30 μmol.L-1）. VD contractions in response to eFS, a,β-meATP and Phe were significantly enhanced by L-NAMe. Sildenafil treatment in the L-NAMe group improved the contractile response of VD to eFS （20 Hz）. In the presence of PPADS, the enhanced contractile response of VD to eFS and a,β-meATP in hypertensive rats was reversed. In the rat model of chronic NO depletion, the purinergic and adrenergic components and eFS affect VD contractility. The VD contractile response may be mediated more by the purinergic system than the adrenergic system, and sildenafil may alter the ejaculatory response in men with Pe.

关键词： hypertensive rat NG-nitro-L-arginine methyl ester purinergic receptors P2X sildenafil vas deferens

Simultaneous extraction of Phosphorus, Potassium, Calcium and Magnesium from Soils and Potassium Recommendations for Crops in Southern Brazil

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Pedosphere 2011年第3期21卷 365-372页

作者： L.BORTOLON C.GIANeLLO S.WeLTeR R.G.O.ALMeIDA e.GIASSON Department of Soil Science Federal University of Rio Grande do SulPorto AlegreRS (Brazil)

Simultaneous multi-element extraction has been increasing worldwide to improve soil laboratory testing quality and efficiency. This study sought to investigate the applicability of the Mehlich-1, Mehlich-3, and resin methods for simultaneous extraction of soil available P, K, Ca, and Mg as well as the effect of using conversion equations on nutrient recommendations for crops. Topsoil （0-20 cm） samples were taken from the most representative soil types used for crop production in southern Brazil with a wide range of chemical, physical, and mineralogical properties. Soil P, K, Ca, and Mg were simultaneously extracted using 1.0 mol.L-1 KCl, Mehlich-1 and Mehlich-3 solutions, and membrane resin. The amounts of P extracted with the Mehlich-1 method were, on average, 50% lower than those extracted with the resin and Mehlich-3 methods. However, the resin method extracted the lowest amounts of K, Ca, and Mg. The use of conversion equations was suitable and it did not affect negatively the K recommendations for crops grown on soils of southern Brazil.

关键词： Mehlich-1 Mehlcih-3 membrane resin multi-element extraction soil testing

Ammonium-ion batteries with a wide operating temperature window from-40 to 80℃

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eScience 2021年第2期1卷 212-218页

作者： Lei Yan Ya-e Qi Xiaoli Dong Yonggang Wang Yongyao Xia Department of Chemistry and Shanghai Key Laboratory of mol.cular Catalysis and Innovative Materials Institute of New EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Fudan UniversityShanghai200433China

Ammonium-ion batteries are promising solutions for large-scale energy storage systems owing to their costeffectiveness,safety,and ***,we propose an aqueous ammonium-ion battery based on an organic poly(1,5-naphthalenediamine)anode and an inorganic Prussian blue cathode in 19 M(M:mol.kg^(-1))CH3COONH_(4)*** operation involves a reversible coordination reaction(C=N/C-N-conversion)in the anode and the NH_(4)^(+)insertion/extraction reaction in the cathode,along with NH_(4)^(+)acting as the charge carrier in a rocking-chair *** from the fast kinetics and stability of both electrodes,this aqueous ammoniumion battery shows an excellent rate capability and long cycle stability for 500 ***,an energy density as high as 31.8 Wh kg^(-1) can be achieved,based on the total mass of the cathode and ***,this aqueous ammonium-ion battery works well over a wide temperature range from-40 to 80℃.This work will provide new opportunities to build wide-temperature aqueous batteries and broaden the horizons for large-scale energy storage systems.

关键词： Ammonium-ion batteries Wide operation temperature Fast kinetics “Water-in-salt”electrolyte

用对氨基苯酚改性的碳纳米管糊电极同时测定羟胺和苯酚(英文)

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催化学报 2013年第9期34卷 1768-1775页

作者： Ali A. ensafi e. Heydari-Bafrooei B. Rezaei Department of Chemistry Isfahan University of Technology

A carbon paste electrode that was chemically modified with multiwall carbon nanotubes and p-aminophenol was used as a selective electrochemical sensor for the simultaneous detection of hydroxylamine (HX) and phenol. Cyclic voltammetry, double potential-step chronoamperometry, square wave voltammetry (SWV), and electrochemical impedance spectroscopy were used to investigate the use of p-aminophenol in the carbon nanotubes paste matrixes as a mediator for the electrocatalytic oxidation of HX and phenol in aqueous solution. The coefficient of electron transfer and catalytic reaction rate constant were determined using the electrochemical methods. Under optimized conditions, the electrocatalytic oxidation current peaks for HX and phenol increased linearly with concentration in the range of 0.5-180.0 and 10.0-650.0 μmol.L for HX and phenol, respectively. The detection limits for HX and phenol were 0.15 and 7.1 μmol.L, respectively. The anodic potential peaks of HX and phenol were separated by 0.65 V in SWV. Because of good selectivity and sensitivity, the present method provides a simple method for the selective detection of HX and phenol in practical samples such as water samples.

关键词： Hydroxylamine and phenol determination p-Aminophenol Multiwall carbon nanotube paste electrode Voltammetry

Surgical Preparation of a Permanent Carotid Transposition in Sheep

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Surgical Science 2011年第7期2卷 402-405页

作者： Liana V. Gouvêa ernane P. F. Novais Ceci R. Leite Fábio H. B. Ximenes Ricardo M. Almeida R. B. mol.s J. G. C. Palermo C. e. V. Silva Jose R. J. Borges eduardo M. M. Lima Roberta Ferro Godoy 不详

In large animal research, when frequent sampling of arterial blood is needed, the carotid artery transposition is the most used technique. The objective of this paper is to describe a new technique for carotid artery transposition in sheep and evaluate its effectiveness using the echo-Doppler ultrasound. The animals enrolled in this study had their carotid surgically elevated to the subcutaneous level, by suturing underneath muscles sternocephalic and brachiocephalic. None of the animals that underwent the procedure in this study had trans- or postoperative complications. Six months after the suture removal, all animals presented patent ca-rotids by echo-Doppler ultrasound. This is an easy and safe procedure for carrying out experiments that re-quire the collection of arterial blood.

关键词： Blood Gas Analysis eco-Doppler experimental Surgery

Determination of Some CarbonylCarboxylic Acids Using Chemiluminescent Reaction of Ru (bipy)_3^(2+)-Ce (Ⅳ)

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Wuhan University Journal of Natural Sciences 1999年第3期4卷 326-330页

作者： Han, He-you He, Zhi-ke Li, Xiao-yan Zeng, Yun'e Wuhan University College of Chemistry Wuhan China (GRID:grid.49470.3e) (ISNI:***)

A coupled chemiluminescence method for the determination of some carhoxylic acids was devel-oped, based on their enhancement the chemiluminescence light emission of the reaction of tirs(2, 2'-bipyri-dine) ruthenium(Ⅱ) and Ce(Ⅳ) in sulfuric acid medium. The conditions for their determination were opti-mized. The following detection limits were obtained: oxalic acid, 2. 67×10-8 mol.L; propandioic acld, 1.20×10-6 mol.L; pyruvic acid, 1. 35 ×10-8 mol.L; citric acid, 5.10×10-8. mol.L; barbituric acid, 2.48×10-7,mol.L. The proposed method was successfully applied to determination or oxalic acid. The coupled chemilu-minescent reaction mechanism and rate equation are proposed.

关键词： chemiluminescence Ru(bipy)_3^(2+) carbonyl carboxylic acid Ce(Ⅳ)