Bacterial Wall Peptidoglycans; Mecanism of Action of Penicillin

in Genetics of Industrial Microorganisms : abstact book (1970)

On possible vibrational unhancement of N2+ first negative bands in auroral hydrogen arcs

in Physica Norvegica (1970)

Essais phytochimiques préliminaires sur quelques plantes médicinales du Rwanda oriental

in Plantes médicinales et phytothérapie (1970), 4(4), 263-278

This paper gives results of phytochemical screening on some thirty medicinal and toxic plants mainly collected in Eastern Rwanda ( national ParK of Akagera). these plants belong to variuos genera ( Acacia ... [more ▼]

This paper gives results of phytochemical screening on some thirty medicinal and toxic plants mainly collected in Eastern Rwanda ( national ParK of Akagera). these plants belong to variuos genera ( Acacia, Albizia, Anthocleista, Apodytes, Cassia, Cissampelos, Clematis, Dichrostachys, Fagara, Harrinsonia, Impatiens, Ipomoea, Kniphofia, Olea, Osyris, Parinari, Rhamnus, Rytigynia, Sesbania, Solanum, Strychnos, Thonningia, Tylophora, Ximenia). Previuosly no plant of this country had been chemically studied. [less ▲]

Functions of Subcellular Structures

in Bacq, Zenon Marcel (Ed.) Fundamentals of Biochemical Pharmacology (1970)

Studies of the structure and biosynthesis of bacterial walls are intimately associated with the mechanism of action of several antibacterial agents.

Mass Spectrometric Study of Dissociative Attachment in Diatomic Molecules. II. NO and O2.

in International Journal of Mass Spectrometry and Ion Physics (1970), 4

The DA processes of O- ions in NO and O2 are investigated using a 60° sector field mass spectrometer. In NO O- appears at (7.43+/-0.2) eV and the analysis of the DA curve indicates the probable existence ... [more ▼]

The DA processes of O- ions in NO and O2 are investigated using a 60° sector field mass spectrometer. In NO O- appears at (7.43+/-0.2) eV and the analysis of the DA curve indicates the probable existence of two other processes at 8.1 eV and 9.0 eV. In O2 only one process is observed at (3.45+/-0.3) eV. For both molecules an attempt is made to establish the shape of the potential energy curve of the electronic states of the transient negative molecular species involved. [less ▲]

Microtextures of Fe-Ti oxide minerals in the South-Rogaland anorthositic complex (Norway)

in Annales de la Société Géologique de Belgique (1970), 935

Positive and Negative Ion Formation in Ketene by Electron Impact

in International Journal of Mass Spectrometry and Ion Physics (1970), 3

Dissociation processes leading to positive and negative ions in ketene are discussed on the basis of appearance potential measurements. All important positive and negative ions are examined. For the ... [more ▼]

Dissociation processes leading to positive and negative ions in ketene are discussed on the basis of appearance potential measurements. All important positive and negative ions are examined. For the negative ions, only resonance dissociative attachment processes are considered. Excited electronic states of negative ions, in particular for O-, may explain the structure observed in the dissociative attachment efficiency curves. [less ▲]

N° spécial consacré à l'éducation préscolaire

in International Review of Education (1970), 16(1),

Biochemistry of the Bacterial Wall Peptidoglycan in Relation to the Membrane

in FEBS Symposium (1970), 20

Mass Spectrometric determination of the Electronaffinities of Radicals.

in Chemical Physics Letters (1970), 6(4), 273-276

By mass spectrometric study of the appearance of C2-, CH- and C2H- from CH4, C2H2, C2H4, C2H3X (X=F, Cl) the following electronaffinities have been determined: EA(CH)=(2.6+/-0.3) eV, EA(C2)=(3.3+/-0.2) eV ... [more ▼]

By mass spectrometric study of the appearance of C2-, CH- and C2H- from CH4, C2H2, C2H4, C2H3X (X=F, Cl) the following electronaffinities have been determined: EA(CH)=(2.6+/-0.3) eV, EA(C2)=(3.3+/-0.2) eV and EA(C2H)=(2.1+/-0.3) eV. Some evidence is brought to the existence of electronic excited states of these ions. An evaluation of these negative ions dissociation energy in their ground electronic state is given and is found to be of the order of magnitude of the corresponding isoelectronic molecular species dissociation energy. [less ▲]