Anda Counotte

Anda Counotte
Cvier consultancy

PhD

About

31
Publications
1,561
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258
Citations
Introduction
Skills and Expertise

Publications

Publications (31)
Article
Full-text available
Dutch institutions of higher education have to meet stringent requirements for energy efficiency and reduction of carbon emissions imposed by the national government and through voluntary agreements on energy-efficiency. This exploratory study reports the relative contribution of student (and staff) travel to the carbon emissions of Dutch higher ed...
Article
Full-text available
Rubens, W., & Counotte, A. (2012). Een levenlang leren faciliteren met OpenU. In R. Jacobi, & N. van der Woert (Eds.), Trendrapport Open Educational Resources 2012 (pp. 22-26). Utrecht: SURF Foundation - Special Interest Group Open Educational Resources SURF.
Article
Rubens, W., & Counotte, A. (2012). Facilitating lifelong learning with OpenU. In R. Jacobi, & N. van der Woert (Eds.), Trendreport Open Educational Resources 2012 (pp. 22-26). Utrecht: SURF Foundation - Special Interest Group Open Educational Resources SURF.
Conference Paper
Full-text available
In most cases the initial production and publication of OER is undertaken by a University and funded through a special project with grants from external bodies. In this phase, OER are developed both from scratch or derived from existing Higher Education courses. After this project phase, the ongoing development and publication of OER continues and...
Conference Paper
Full-text available
Green data centres are the talk of the day. But who in fact is involved in developing green data centres? What is their contribution? And what does this contribution constitute in practical terms? This article states which stakeholders are involved in green data centres in the Netherlands, what their involvement is and what effect their involvement...
Article
Green data centres are the talk of the day. But who in fact is involved in developing green data centres? What is their contribution? And what does this contribution constitute in practical terms? This article states which stakeholders are involved in green data centres in the Netherlands, what their involvement is and what effect their involvement...
Article
De kern van dit boekje bestaat uit drie delen die handelen over de volgende onderwerpen: • duurzame inkoop bij een rekencentrum conform wetgeving en normen • duurzaamheid bij faciliteiten voor en ICT voorzieningen in een rekencentrum • sturen naar een duurzaam rekencentrum door informatie en analyse
Article
It is shown by 15N-labelling techniques that hydrazination of pyridazines partly occurs according to a reaction pathway, involving addition of the nucleophile (hydrazine), ring opening and ring closure (SN(ANRORC)-mechanism). It is also proved that phthalazines undergo hydrazination without ring opening (SN(AE)-mechanism).
Article
Aus den Tetrazinen (I) erhält man mit Hydrazin über Addukte die Hydrazino-Derivate (III), die z.B. mit Aceton zu (V) kondensiert oder mit Brom zu den Bromiden (VI) substituiert werden.
Article
The crystal structure of 6-ethyl-3-phenyl-1,6-dihydro-1,2,4,5-tetrazine (3) was elucidated by X-ray structure analysis. This analysis revealed that the molecule is in a boat conformation with C(6) and C(3) pointing upward with dihydral angles of 49.3° and 26.7°, respectively. N(1) was found to be sp2 hybridized, and the N(1)-N(2), N(2)-N(3), C(3)-N...
Article
3-Alkyl(aryl)-1,2,4,5-tetrazines (7) when treated with hydrazine hydrate were found to undergo a Chichibabin hydrazination into 3-alkyl(aryl)-6-hydrazino-1,2,4,5-tetrazines (8) according to an SN(ANRORC) mechanism. 1H and 13C NMR measurements indicate that the first step in this reaction sequence is the formation of a homoaromatic σ adduct anion, d...
Article
Aus den Tetrazinen (I), die in bekannter Weise hergestellt werden, entstehen bei der Boranatreduktion die Dihydroverbindungen (II), die zu Anionen (III) bzw. Kationen (IV) umgesetzt werden können.
Article
Full-text available
A new method for the preparation of 6-(alkyl)amino-3-aryl(alkyl)-1,2,4,5-tetrazines is described. Dissolving 3-aryl(alkyl)-1,2,4,5-tetrazines in liquid ammonia or a primary aliphatic amine at −35° to −40°, followed by addition of potassium permanganate gives the title compounds in reasonable to excellent yields.
Article
This thesis describes some nucleophilic substitution reactions between the red 1,2,4,5-tetrazines and hydrazine-hydrate or ammonia. Special attention was paid to the occurrence of the S N (ANRORC) mechanism in these substitution reactions. This mechanism comprises a sequence of reactions, involving the A ddition of a N ucleophile to a heteroaromati...
Article
The homoaromatic σ adducts 2 formed between liquid ammonia and 3-aryl(alkyl)-1,2,4,5-tetrazines are anionic species. This is proven by (i) a study on the linear dependence between the 13C substituent chemical shift at C4 of the aryl ring (SCS-4) and the electron demand of the substituted 1,2,4,5-tetrazinyl groups in 3-(p-Y-phenyl)-1,2,4,5-tetrazine...
Article
1H NMR spectroscopy of some 1,6-dihydro-3-aryl(alkyl)-1,2,4,5-tetrazines and their conjugate bases and acids, at various temperatures, shows that these species are all homoaromatic. The hydrogens at position 6 have a different orientation toward the aromatic ring; one is oriented above and the other away from the aromatic ring, thus resulting in a...
Article
Evidence is presented that the hydrazinolysis of 3-amino- (5) and 3-bromo-6-methyl-1,2,4,5-tetrazine (7) into the 3-hydrazino-6-methyl-1,2,4,5-tetrazine (6*) with 15N-labelled hydrazine leads to incorporation of 15N in the 1,2,4,5-tetrazine ring. Thus in the hydrazino-deamination and hydrazino-debromination a SN(ANRORC) mechanism is operative. Base...
Article
Proteins present in messenger ribonucleoprotein particles were labeled with [35S]-methionine in Ehrlich ascites tumor cells in which synthesis of new ribosomes was inhibited. Poly(A)-protein complexes were isolated from free and membrane-bound polyribosomes by sucrose gradient centrifugation and affinity chromatography on oligo(dT)-cellulose. Both...
Article
Duurzaamheid bij de inkoop van ICT staat sterk in de belangstelling. In dit artikel wordt uiteengezet wat duurzaam inkopen op dit moment betekent voor het inkopen van voorzieningen bij een rekencentrum. Daarbij wordt gekeken naar de praktijk van de duurzaamheid bij de inkoop van objecten voor rekencentrumvoorzieningen en voor ICT-werkplekken buiten...
Article
Wie de duurzaamheid van een rekencentrum wil vergroten, moet allereerst weten wat de huidige elektriciteitsconsumptie is. Derde partijen kunnen helpen bij het onderzoek naar deze verbruikswaarden, zowel in de vorm van een organisatiebrede analyse als van een specifieke analyse in het rekencentrum alleen. Uiteindelijk moet deze kennis leiden tot een...
Article
Rekencentra zijn grootverbruikers van energie. Bezitters van deze faciliteiten namen uit economische overwegingen al energie- en milieubesparende maatregelen. Nu hebben ze een extra motief: de meerjarenafspraken met de staatssecretaris om het energieverbruik jaarlijks 2 procent te verminderen. Veel van de toegepaste materialen zijn al cradle to cra...

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