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Global biodiversity scenarios for the year 2100.
Scenarios of changes in biodiversity for the year 2100 can now be developed based on scenarios of changes in atmospheric carbon dioxide, climate, vegetation, and land use and the known sensitivity ofExpand
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Ecological forecasts: an emerging imperative.
Planning and decision-making can be improved by access to reliable forecasts of ecosystem state, ecosystem services, and natural capital. Availability of new data sets, together with progress inExpand
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A Procedure to Obtain the Effective Nuclear Charge from the Atomic Spectrum of Sodium
The penetration of the valence electron orbitals of the alkali metals into their inner shells and its effect on the energy levels can be considered through two methods that take into accountExpand
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Anomeric and mesomeric effects in methoxycarbonylsulfenyl chloride, CH(3)OC(O)SCl: an experimental and theoretical study.
The molecular structure and conformational properties of methoxycarbonylsulfenyl chloride, CH(3)OC(O)SCl, were determinated in the gas and solid phases by gas electron diffraction, low-temperatureExpand
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Vibrational analysis of nicotinic acid species based on ab initio molecular orbital calculations
Abstract In this work a vibrational investigation of the equilibrium species in aqueous solution of nicotinic acid was performed, by both experimental as well as theoretical methods. The RamanExpand
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TiO2 with a high sulfate content—thermogravimetric analysis, determination of acid sites by infrared spectroscopy and catalytic activity
Sulfated metal oxides have a very high acidity, being considered by some as superacids, although it is still a controversial matter. There has been considerable investigation into sulfated ZrO2 inExpand
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A low temperature matrix isolation infrared study of acetamides. II. Thioacetamide and some deuterated derivatives
Abstract The IR spectra of acetamide and some of its deuterated derivatives in argon matrices (14 K) have been obtained in the region 4000–200 cm −1 . An injection system was developed to avoidExpand
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Intralamellar structural modifications related to the proton exchanging in K4Nb6O17 layered phase
Abstract Basic structural aspects about the layered hexaniobate of K 4 Nb 6 O 17 composition and its proton-exchanged form were investigated mainly by spectroscopic techniques. Raman spectra ofExpand
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The Raman and infrared spectra and normal coordinate analysis for 1,2-diiodotetrafluorobenzene
The Raman spectrum of 1,2-diiodotetrafluorobenzene was recorded in the region 50–2000 cm−1 on a Jarrell-Ash Model 25–300 double monochromator spectrometer using 5145 A radiation from an argon-ionExpand
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2-Hydroxy-2-oxo-1,4,2-oxa-aza-phospha(V) cyclohexane-4-methylene phosphonic acid (OAPhMPh): its structure and symmetry by vibrational spectroscopy
Abstract 2-Hydroxy-2-oxo-1,4,2-oxa-aza-phospha(V) cyclohexane-4-methylene phosphonic acid (OAPhMPh) was obtained by a Mannich type reaction. From NMR spectroscopy a chair-conformed heterocyclicExpand
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