多组分氧化物Ag－Bi－V－Mo－O催化作用的光电子能谱研究

多组分氧化物Ａｇ－Ｂｉ－Ｖ－Ｍｏ－Ｏ催化作用的光电子能谱研究宋伟，李静，窦伯生（中国科学院长春应用化学研究所长春１３００２２）关键词　钼钒酸铋，助剂Ａｇ，ＸＰＳ，Ａｒ~＋刻蚀，氧化还原对于烃类选择氧化反应中复合氧化物的催化作用，普遍认为是Ｒｅｄｏｘ机...

丙烷氧化反应中多组分氧化物Bi－V－Mo－O催化作用的红外光谱研究

丙烷氧化反应中多组分氧化物Ｂｉ－Ｖ－Ｍｏ－Ｏ催化作用的红外光谱研究李静，宋伟，窦伯生（中国科学院长春应用化学研究所长春１３００２２）关键词钼钒酸铋，丙烷，选择氧化，催化作用机理，红外光谱迄今对于含有钼、铋复合氧化物催化剂的活性中心和作用机理存在不同看...

Radiative rates for E1, E2, M1, and M2 transitions in the Br-like ions Sr IV, Y V, Zr VI, Nb VII, and Mo VIII

Energies and lifetimes are reported for the lowest 375 levels of five Br-like ions, namely SrIV, YV, ZrVI, NbVII, and MoVIII, mostly belonging to the 4s²4p⁵, 4s²4p⁴4ℓ, 4s4p⁶, 4s²4p⁴5ℓ, 4s²4p³4d², 4s4p⁵4ℓ, and 4s4p⁵5ℓ configurations. Extensive configuration interaction has been included and the general-purpose relativistic atomic structure package (grasp) has been adopted for the calculations. Additionally, radiative rates are listed among these levels for all E1, E2, M1, and M2 transitions. From a comparison with the measurements, the majority of our energy levels are assessed to be accurate to better than 2%, although discrepancies between theory and experiment for a few are up to 6%. An accuracy assessment of the calculated radiative rates (and lifetimes) is more difficult, because no prior results exist for these ions.

Y t??, ??c??mo lo v??s?

Material de un programa de sensibilizaci??n para j??venes sobre tolerancia, interdependencia y cooperaci??n, puesto en marcha a finales de 1994 que se articula en torno a tres fases de un a??o de duraci??n cada una. La primera se han creado grupos de trabajo en las distintas comunidades aut??nomas y se han creado estos materiales. En la segunda se iniciar?? el trabajo con j??venes y en la tercera se incorporar??n las propuestas surgidas de los grupos y se reeditar??n los materiales. El material se divide en: 1. Gu??a de educaci??n para el desarrollo, es la gu??a general del programa, 2. Carpeta para la educaci??n formal, es la carpeta del profesor de ESO, 3. Carpeta para la educaci??n no formal, es la carpeta del animador, en el ??mbito no formal, 4. Experiencias de educaci??n para el desarrollo en el trabajo con j??venes, recoge el resultado de un Congresos del mismo nombre, 5. 13 carteles, 6. Para empezar a trabajar...v??deo y exposici??n, es el material de trabajo del video adjunto.

??C??mo organizar un congreso cient??fico de calidad? : claves y variables del ??xito del XV Congreso Nacional y V Iberoamericano de Pedagog??a

El t??tulo aparece en espa??ol y, a continuaci??n, el t??tulo traducido al ingl??s: ???How to Organize a Quality Scientific Congress? Keys and Variables of Succes of the XV National and V Iberoamerican Congress of Pedagogy'

DFT study of the water-assisted tautomerization process between hydrated oxide, MO(H2O)(+), and dihydroxide, M(OH)(2)(+) cations (M = V, Nb and Ta)

Density functional theory (DFT) calculations point out that the participation of water can effectively lower the barrier height for the isomerization process between hydrated oxide cation, MO(H2O)(+), and dihydroxide cation, M(OH)(2)(+), (M = V, Nb and Ta). The catalytic effect is achieved by a water-assisted mechanism in which water acts as proton donor and acceptor, via a transition structure corresponding to a six-membered ring. In the case of vanadium atom, the presence of two water molecules has been taken into account and the tautomerization becomes nearly barrierless, decreasing both the stability of the transition structures relative to intermediates and the depths of wells associated with the intermediates. (C) 2003 Elsevier B.V. All rights reserved.

Evaluation of Lubricating Oil Preparation Procedures for the Determination of Al, Ba, Mo, Si and V by High-Resolution Continuum Source FAAS

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Geologische Beschreibung des Kantons St. Gallen und seiner umgebungen Enthalten auf Blatt IX des eidg. Atlas mit Benutzung des Nachlasses von A. Escher v. d. Linth bearb. von Reallehrer Gutzwiller, prof. Kaufmann, dr. Cas. Mösch.

Each vol. has also special t.p.

Derashot Mahariḥ : derushim be-halakhah ṿe-agadah le-moʻadim...

Mode of access: Internet.

ha-Yareaḥ : nosad be-tavnit mikhtav ʻiti ha-yotse la-or le-ḥodshe ha-shanah, kolel maʼamarim ha-meʻorerim li-devarim ṭovim u-moʻilim, ḥidudim ṿe-hitulim ʻal migreʻot bene-ʻamenu le-khol miflegotehem /

Mode of access: Internet.

Sefer Derashot ha-Ramah : le-kol Shabatot ha-shanah ṿeha-moʻadim : kolel be-tokho sheloshim derashot ... /

First ed. pub. 1911.