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1.
Zusammenfassung Die Synthesen und einige Eigenschaften der Verbindungen von zweiwertigem Mn, Cu, Fe, Co, Ni und Zn mit Hydrazidokohlensäure werden beschrieben. Die Verbindungen von Fe, Co, Ni und Zn sind Hydrazinium-hydrazidocarbonato-metallate(II) der allgemeinen Formel N2H5[Me
II(N2H3COO)3]·H2O, die von Mn und Cu sind aber einfache Hydrazido-carbonate der FormelMe
II(N2H3COO)2·n H2O. Die Ergebnisse magnetochemischer Messungen sowie der orientierender Messungen der thermischen Eigenschaften werden angegeben.
J. Slivnik, A. malc, B. Sedej undM. Vilhar, Vestnik SKD (Bull. Soc. chim. Slovène)11, 53 (1964). 相似文献
The syntheses and some properties of the compounds of bivalent Mn, Fe, Co, Ni, Cu and Zn with hydrazido-carbonic acid are described. The compounds of Fe, Co, Ni and Zn are hydrazinium hydrazido-carbonato-metallates(II) with the formula N2H5[Me II(N2H3COO)3]·H2O. The compounds of Mn and Cu are hydrazido-carbonatesMe II(N2H3COO)2·n H2O. The results of magnetic and preliminary measurements of thermal properties are given.
J. Slivnik, A. malc, B. Sedej undM. Vilhar, Vestnik SKD (Bull. Soc. chim. Slovène)11, 53 (1964). 相似文献
2.
Jože Slivnik Mateja Žvanut Borka Sedej 《Monatshefte für Chemie / Chemical Monthly》1968,99(5):1713-1717
Zusammenfassung Die Reaktion zwischen MgCO3 und wässerigen Lösungen von Hydraziniumdifluorid und Flußsäure führt zum Hydraziniumfluoromagnesat. Diese Verbindung ist auch aus Magnesiumchlorid-und Hydraziniumdifluorid-Lösungen herstellbar. Es werden röntgenographische, IR-spektrographische und thermogravimetrische Untersuchungen dieser Verbindung angegeben.
Mit 3 Abbildungen 相似文献
Hydrazinium(+2) fluoromagnesate is formed in the reaction between MgCO3 and hydrazinium difluoride dissolved in hydrogen fluoride. The reaction of magnesium chloride and an aqueous solution of hydrazinium difluoride yields the same product. The results of X-ray diffraction studies, IR spectroscopical studies and thermogravimetrical investigation are given.
Mit 3 Abbildungen 相似文献
3.
Borka Kovacevik Annemarie Wagner Johan Boman Jens Laursen Jan B. C. Pettersson 《X射线光谱测定》2011,40(4):280-288
Aerosol samples were collected at an urban background site in Skopje, Former Yugoslavic Republic of Macedonia, during four measurement campaigns from December 2006 to October 2007. An impactor was used to collect particulate matter (PM2.5) aerosol particles and the samples were analyzed for the concentrations of particulate mass, black carbon (BC), and 17 elements. The 12‐h average PM2.5 concentrations varied in the range 10–140 µg m?3 with the highest concentrations measured during wintertime pollution episodes and during the summer period. Pair‐wise correlations and crustal enrichment were studied and the data set was analyzed by factor analysis and positive matrix factorization. Major aerosol components were identified as mineral dust (main observed tracers Si, K, Ca, Ti, Fe, Sr, and Rb), combustion (BC, S, K, V, and Ni), traffic‐related aerosol (Pb and Zn), and secondary sulfate combined with mineral dust. Combustion sources dominated during wintertime and were likely due to heavy oil combustion, biomass burning, and other industrial activities within the city area. Mineral dust was observed throughout the year, but the concentrations peaked during the unusually hot and dry summer of 2007. It is concluded that Skopje suffers from serious air pollution due to central and residential heating, the transport sector, and industrial activities within the city, and contributions from mineral dust increase the PM2.5 concentrations under dry periods. Topography and meteorological conditions aggravate the problems and make the air quality comparable with the conditions in other highly polluted cities in Southern Europe and worldwide. Copyright © 2011 John Wiley & Sons, Ltd. 相似文献
4.
We use the dielectric-response formalism to evaluate the induced density of charge carriers in supported graphene due to an external moving charged particle in terms of its velocity and distance from graphene for several equilibrium charge carrier densities due to graphene doping. We show that, when the particle speed exceeds a threshold value, an oscillatory wake effect develops in the induced charge density trailing the particle. Strong effects are observed in the wake pattern due to finite size of the graphene–substrate gap, as well as due to strong coupling effects, and plasmon damping of graphene?s π electrons. 相似文献
5.
Thermal analyses of hydrazinium fluorometallates of the first row transition elements and zinc are described. The intermediate compounds of the thermal decompositions are either ammonium fluorometallates or adducts of metal fluorides with hydrazine. The end products of the thermal analyses are in all cases metal fluorides, except in the case of the copper compound where elemental copper is obtained. 相似文献
6.
The backscattered electron spectra from graphite sample were studied both experimentally and theoretically at impact energies between 500 and 5000 eV. The angle of the incident electron beam was 50° and the detection angle was 0° with respect to the surface normal, respectively. Monte Carlo (MC) simulations were performed based on the Classical Transport Theory (CTT) model to mimic the experimental spectra. In our simulations, both elastic and inelastic scattering of primary electrons and secondary electron emission from graphite are taken into account. There is found satisfactory agreement between measured and calculated electron spectra. 相似文献
7.
Channeling of fast ions through the bent carbon nanotubes:The extended two-fluid hydrodynamic model 下载免费PDF全文
We investigate the interactions of charged particles with straight and bent single-walled carbon nanotubes(SWNTs)under channeling conditions in the presence of dynamic polarization of the valence electrons in carbon. This polarization is described by a cylindrical, two-fluid hydrodynamic model with the parameters taken from the recent modelling of several independent experiments on electron energy loss spectroscopy of carbon nano-structures. We use the hydrodynamic model to calculate the image potential for protons moving through four types of SWNTs at a speed of 3 atomic units. The image potential is then combined with the Doyle–Turner atomic potential to obtain the total potential in the bent carbon nanotubes.Using that potential, we also compute the spatial and angular distributions of protons channeled through the bent carbon nanotubes, and compare the results with the distributions obtained without taking into account the image potential. 相似文献
8.
The acquisition of data relevant to gaseous fluoride wastes in Slovenia was started in our laboratory four years ago with the intention to find out the quantities of particular fluoride wastes and the best way for their treatment or disposition.From the collected data it is obvious that brick and ceramic industry are among the worst pollutants. The clay from the majority of Slovenian clay pits was characterized. The concentrations of fluoride wastes released from the raw bricks during the firing were measured in different temperature regions. The large fluctuations of fluoride emission values, observed in chimney gases from brick-kilns are discussed and explained. 相似文献
9.
Ohne Zusammenfassung 相似文献
10.
This paper introduces new ideas for quantification of the similarity between chemical compounds. The method adopted makes use of similarity measures derived through comparison of two strings. The derived data on the similarity are then analyzed and applied in the identification of clusters in which the entities are more homogeneous and similar than those outside a cluster. 相似文献