Bulletin de la Société chimique de France, comprenant les procès-verbaux des séances, les mémoires présentés à la Société, l'analyse des travaux de chimie pure et appliquée publiés en France et à l'étranger ...

1861-72: L. Hachette et cie.

Étude bibliographique sur les éditions de L'antiqvité de Bovrdeavs d'Élie Vinet ...

Three articles extracted from various numbers of a periodical.

Logarithmic tables of numbers and trigonometrical functions,

Mode of access: Internet.

Les chastes et loyales amovrs de Theagene et Cariclee, reduites du grec de l'Histoire d'Heliodore en huict poëmes dragmatiques, ou theatres consecutifs [microform].

Master microform held by: DLC.

Bibliothèque américaine, contenant des mémoires sur l'agriculture, le commerce, les manufactures, les moeurs et les usages de l'Amérique; l'analyse des ouvrages scientifiques de ce pays, ainsi que de ceux des Européens qui y ont voyagé; et des extraits des journaux publiés en Amérique, sur tout ce qui peut intéresser le commerc̜ant et l'homme d'état; par une sociéte de savans et d'hommes de lettres ...

Collation: [no. 1-2] 195 p. 6 fold. tab.-[no. 3] 123 p.-[no. 4] 127 p.-[no. 5] 131 p.-[no. 6] p. [133]-244.-[no. 7] 140 p.-[no. 8] p. [141]-256-[no. 9] p. [257]-384.

Mémoires de l'Academie impériale des sciences de St.-Pétersbourg.

Each vol. consists of multiple numbers which are separately paged monographs.

Alcune vedute di archi trionfali ed altri monumenti : inalzati da Romani parte de quali si veggono in Roma, e parte per l'Italia /

Described by Hind as renumbered from 1748 ed. In library's copy the plates have the earlier numbers and order but the additional plates of later eds. are included: Arco di Aosta and Tempio di Minerva Medica (the latter by Francesco Piranesi). Some plates numbered by pen.

L'Aéronautique; revue illustrée de la navigation aérienne.

"Bibliothèque de l'aéronautique-club de France. Liste des ouvrages": v. 7, p. 78-80.

Le Canada-français : revue publié sous la direction d'un comité de professeurs de l'Université Laval.

"Table générale des matières du Canada-français par ordre alphabétique de noms d'auteurs": v. 4, p. [313]-320. "Table analytique des matières": p. [321]-331.

L'Enseignement public; revue pëdagogique

At head of title (caption title -1902) 1902: Musëe pëdagogique et Bibliothëque centrale de l'enseignment primaire

L'Enseignement public; revue pédagogique.

At head of title (caption title, -1902) -1902; Musée pédagogique et Bibliothèque centrale de l'enseignement primaire.

L'Éducation nationale.

Issues for Dec. 18, 1863- called nouv. sér.

On the forced matching numbers of bipartite graphs

Let G be a graph that admits a perfect matching. A forcing set for a perfect matching M of G is a subset S of M, such that S is contained in no other perfect matching of G. This notion has arisen in the study of finding resonance structures of a given molecule in chemistry. Similar concepts have been studied for block designs and graph colorings under the name defining set, and for Latin squares under the name critical set. There is some study of forcing sets of hexagonal systems in the context of chemistry, but only a few other classes of graphs have been considered. For the hypercubes Q(n), it turns out to be a very interesting notion which includes many challenging problems. In this paper we study the computational complexity of finding the forcing number of graphs, and we give some results on the possible values of forcing number for different matchings of the hypercube Q(n). Also we show an application to critical sets in back circulant Latin rectangles. (C) 2003 Elsevier B.V. All rights reserved.

Methyl jasmonate vapour treatment suppresses specking caused by Botrytis cinerea on cut Freesia hybrida L. flowers

Treatment of cut freesia var. Cote d'Azur flowers with methyl jasmonate (MeJA, 0.1 mu l MeJA l(-1)) vapour suppressed petal specking caused by Botrytis cinerea infection. MeJA efficacy was concentration and incubation temperature dependent. Disease severity, lesion numbers and lesion diameters decreased with increasing MeJA concentration from 0.025 to 0.1 mu l MeJA l(-1). However, there were no significant (P > 0.05) differences among MeJA concentrations examined. MeJA was more effective in reducing B. cinerea flower specking at 20 degrees C than at 12 degrees C. MeJA treatment was ineffective at 5 degrees C. At 20 degrees C, MeJA treatment at 0.1 mu l MeJA l(-1) reduced disease severity, lesion numbers and lesion diameters by 58, 50 and 48%, respectively, as compared to untreated controls. In a repeat experiment, disease severity, lesion numbers and lesion diameters on MeJA vapour treated flowers after 12 h of incubation were reduced by 68, 56 and 50%, respectively. MeJA did not exert direct antifungal activity in-vitro, suggesting that treatment in-vivo reduced B. cinerea-induced flower specking by induction of host defence responses. MeJA at 0.1 mu l MeJA l(-1) significantly (P < 0.05) increased vase life of cut freesia flowers and delayed senescence judged by lower wilt scores and higher fresh weights as compared to untreated controls. (c) 2005 Elsevier B.V. All rights reserved.

Complex numbers and symmetries in quantum mechanics, and a nonlinear superposition principle for Wigner functions

Complex numbers appear in the Hilbert space formulation of quantum mechanics, but not in the formulation in phase space. Quantum symmetries are described by complex, unitary or antiunitary operators defining ray representations in Hilbert space, whereas in phase space they are described by real, true representations. Equivalence of the formulations requires that the former representations can be obtained from the latter and vice versa. Examples are given. Equivalence of the two formulations also requires that complex superpositions of state vectors can be described in the phase space formulation, and it is shown that this leads to a nonlinear superposition principle for orthogonal, pure-state Wigner functions. It is concluded that the use of complex numbers in quantum mechanics can be regarded as a computational device to simplify calculations, as in all other applications of mathematics to physical phenomena.