Results 11 to 20 of about 1,727 (220)

(NH₄)₂[Tc₂O₂(S₂O₇)₄]: An Unexpected Technetium(V)-Sulfate From the Reaction of (NH₄)(TcO₄) With SO₃. [PDF]

Chemistry
The reaction of the radioactive pertechnetate (99TcO4)− with the oxidizer SO3 leads to blue crystals of (NH4)2[Tc2O2(S2O7)4]. The complex dimeric [Tc2O2(S2O7)4]2− anion exhibits the technetium in the oxidation state V, showing that reduction occurs during the reaction.
Sutorius S, Heinen J, van Gerven D, Bruns J, Strub E, Wickleder MS.   +5 more
europepmc   +2 more sources

Revisiting a natural wine salt: calcium (2R,3R)-tartrate tetrahydrate. [PDF]

Acta Crystallogr C Struct Chem
In the salt calcium (2R,3R)‐tartrate tetrahydrate, the absolute configuration was established unambiguously using anomalous dispersion effects in the diffraction patterns. High‐quality data also allowed the location and free refinement of all the H atoms.The crystal structure of the salt calcium (2R,3R)‐tartrate tetrahydrate {systematic name: poly ...
Polo A, Soriano-Jarabo A, Rodríguez R, Macías R, García-Orduña P, Sanz Miguel PJ.   +5 more
europepmc   +2 more sources

Role of restraints on hydrogen atoms in Hirshfeld atom refinement: the case of tri-aspartic acid trihydrate. [PDF]

Acta Crystallogr B Struct Sci Cryst Eng Mater
Restraints for atomic displacement parameters of hydrogen atoms in Hirshfeld atom refinement are tested using two polymorphs of the water‐rich l‐Asp‐l‐Asp‐l‐Asp (DDD) crystal structure.Two polymorphs of l‐Asp‐l‐Asp‐l‐Asp (DDD) trihydrate as model compounds for biologically important proton‐shuttle reactions were investigated with the quantum ...
Sankolli R, Malaspina LA, Dolomanov OV, Luger P, Holstein JJ, Paulmann C, Morgenroth W, Kleemiss F, Dittrich B, Grabowsky S.   +9 more
europepmc   +2 more sources

Endogenous task-based technical change—factor scarcity and factor prices

Economics and Business Review, 2020
This paper develops a static model of endogenous task-based technical progress to study how factor scarcity induces technological progress and changes in factor prices. The equilibrium technology is multi-dimensional and not strongly factor-saving in the
Irmen Andreas
doaj   +1 more source

A vályogkunyhótól a mikroprocesszorig: az Egyesített Növekedéselmélet és alapmodelljei

Competitio, 2021
Az egyesített növekedéselmélet célja, hogy a gazdasági fejlődés hosszútávú tendenciáit egységes elméleti keretbe ágyazva magyarázza meg. Ennek megfelelően egy sikeres egyesített modellnek képesnek kell lennie a különböző időszakok, gazdasági rezsimek ...
Péter Földvári
doaj   +1 more source

Manganese‐catalyzed Dehydrogenation of Amido Alcohols with Liberation of Hydrogen for the Synthesis of Oxazoles

ChemCatChem, Volume 15, Issue 22, November 22, 2023., 2023
The synthesis of oxazoles from abundantly and diversely available and inexpensive starting materials such as esters and amino alcohols is reported. Our reaction proceeds via liberation of hydrogen and a molecular manganese catalyst mediates it most efficiently.
Max Leinert, Torsten Irrgang, Rhett Kempe   +2 more
wiley   +1 more source

Is the natural rate of growth exogenous? A reply

PSL Quarterly Review, 2012
The authors reply to the comment of Boggio and Seravalli about the paper "Is the natural rate of growth exogenous?".   JEL Codes: O41, O47
Miguel A. Leon-Ledesma, Anthony P. Thirlwall   +1 more
doaj   +1 more source

Economic Development and International and Interregional Tourism

Studia Ekonomiczne i Regionalne, 2020
Subject and purpose of work: Tourism was the fastest growing industry until the outbreak of Covid-2019. Nevertheless, there are a few studies on how the industry interacts with the rest of economies within a comprehensive analytical framework.
Zhang Wei-Bin
doaj   +1 more source

Evaluación crítica de la integración de la economía mexicana al proceso de globalización: la búsqueda de una alternativa para impulsar su desarrollo económico

El Trimestre Económico, 2023
Mediante el análisis de la estructura productiva de México en 1980 y 2013, este trabajo explora si el estímulo al mercado interno puede complementar el dinamismo del sector externo a fin de alcanzar un proceso de crecimiento continuo y de desarrollo en ...
Tania Molina del Villar, Fidel Aroche Reyes   +1 more
doaj   +1 more source

O41 Percentage body fat as a predictor for fragility fracture: an observational study [PDF]

Rheumatology, 2020
Abstract Background A body mass index (BMI) of less than 19 is a known risk factor for the development of osteoporosis and thus increases the propensity of one having a fragility fracture. Bone mineral density (BMD) referrals are aided by the FRAX™ tool, which contains BMI in order to calculate the ...
Marwan Bukhari, Dominic T Beith
openaire   +1 more source