Search results for "rake"

Structure-based evaluation of the resonance interactions and effectiveness of the charge transfer in nitroamines

2011

Structural data for five nitroamines of general formula Me₂N–G–NO₂ show effectiveness of the ground-state charge transfer to be most and least efficient in N,N-dimethylnitramine and in 4-N,N-dimethylamino-β-nitrostyrene, respectively. Electron-donor power of the amino nitrogen atom in the latter compound is less than that in 4-nitro-β-N,N-dimethylaminostyrene (these two compounds are isomers). Natural population analysis shows that the charge transfer from the amino to the nitro oxygen atoms is most effective in N,N-dimethylnitramine, Me₂N–NO₂. The nitro oxygen atoms are not the only acceptors of the negative charge lost by the amino nitrogen atom. The nitro group in two substituted nitrobe…

Rakennusten koristemaalausten restaurointi

2017

Maisterin tutkielmassani tarkastelen koristemaalattujen rakennuspintojen restauroinnin ilmiötä ja sen kehittymistä nykyiseen muotoonsa. Rakennuspintojen restaurointi sisältää erilaisia toimia konservoinnista uusien osien toteuttamiseen sisältäen myös rekonstruoinnin. Tutkimuksen tavoitteena on selvittää, miten rakennussuojelun arvotaustan muodostuminen liittyy näihin restaurointitoimenpiteisiin ja miten rakennuspitojen restaurointi on muuttunut 1960-luvulta alkaen. Arvotaustan muodostumisen selvittämiseksi tutkin kulttuuriperinnön suojelua koskevia kansainvälisiä peruskirjoja, rakennussuojelun normeja ja niihin liittyvää kirjallisuutta. Empiirisen osan aineistona on pääkaupunkiseudulla toim…

Doing Research for and With Others : A Researcher's Relationship With Research Content

2022

The chapter discusses the question of social justice in social science research by problematizing the researcher-research content relationship and its guiding principle framework Science-Society-Me. With a focus on early career researchers, the author draws on her own PhD research experience to highlight the social justice tension inherent in the normative approaches and methods for selecting research topic, collecting data and relating with research participants, and analyzing and interpreting data especially in empirical research with fellow human beings. Drawing on the theory of affect, the chapter centralizes the position, biography and experience of the researcher, and the relationship…

The Nature of Transannular Interactions in E4N4 and E82+ (E = S, Se)

2012

The electronic structures of tetrachalcogen tetranitrides, E4N4, and octachalcogen dications, E82+, and the nature of their intramolecular E···E interactions (E = S, Se) was studied with high-level theoretical methods. The results reveal that the singlet ground states of both systems have a surprisingly large correlation contribution which functions to weaken and therefore lengthen the cross-ring E–E bond. The observed correlation effects are primarily static in E4N4, whereas in E82+ the dynamic part largely governs the total correlation contribution. The presented description of bonding is the first that gives an all-inclusive picture of the origin of cross-ring interactions in E4N4 and E8…

Ritual and symbolism in Northern Irish parading culture

2002

Lotic life stages of the European river lamprey (Lampetra fluviatilis) : anthropogenic detriment and rehabilitation

2015

Motsvarigheter till finskans ovs- och osv-ordföljd i svenskan

2001

3,4,5-Trimethoxy-4'-methylbiphenyl

2013

In the title compound, C16H18O3, the dihedral angle between the benzene rings is 33.4 (2)°. In the crystal, mol­ecules are packed in a zigzag arrangement along the b-axis and are inter­connected via weak C—H⋯O hydrogen bonds, and C—H⋯π inter­actions involving the meth­oxy groups and the benzene rings of neighbouring molecules.

3,5-Dimethoxy-4'-methylbiphenyl

2013

The title compound, C15H16O2, crystallizes with three independent mol­ecules in the asymmetric unit. The intra­molecular torsion angle between the aromatic rings of each mol­ecule are −36.4 (3), 41.3 (3) and −37.8 (3)°. In the crystal, the complicated packing of the mol­ecules forms wave-like layers along the b and c axes. The mol­ecules are connected via extensive meth­oxy–phenyl C—H…π inter­actions. A weak C—H…O hydrogen-bonding network also exists between meth­oxy O atoms and aromatic or meth­oxy H atoms.

3,4-Dimethoxy-4'-methylbiphenyl

2013

In the title compound, C15H16O2, the dihedral angle between the planes of the aromatic rings is 30.5 (2). In the crystal, molecules are linked via C—HO hydrogen bonds and C— H interactions, forming a two-dimensional network lying parallel to (100). peerReviewed