A Sorbus bakonyensis (Jáv.) Jáv. (syn. S. majeri Barabits) a Bakony egy igen szűk elter­jedésű apomiktikus kisfaja. Korábbi adatait kizárólag Márkó feletti Kopasz-hegyről (~Kápolnadomb, Csordás-árok) közölték. Részletes térképezéssel sikerült kissé bővíteni faj areáját Kopasz-hegytől nyugatra (Kis-Bükk hegy) és keletre is. egyedszáma (hat fatermetű egyed változó számú ma­gonc) kis kiterjedésű (...

exchange-coupled Fe/CoPt systems H. Oguchi, A. Zambano, M. Yu, J. Hattrick-Simpers, D. Banerjee, Y. Liu, Z. L. Wang, J. P. Liu, S. E. Lofland, D. Josell, and I. Takeuchi Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, USA Advanced Materials Research Institute, University of New Orleans, Louisiana 70148, USA School of Materials Science and E...

Biphenyls are unique phytoalexins de novo synthesized in plants in response to pathogen attack. These compounds are found in Maloideae, a subfamily of the Rosaceae. The anti-microbial activities of biphenyls have been reported in a number of studies and they appear to represent an important defense strategy against pathogens common in the Maloideae, such as species in Malus, Pyrus, Sorbus, and ...

The antioxidant efficiency of dry extracts from inflorescences and/or leaves of seven Sorbus species was studied using four in vitro tests of SET (single electron transfer) and HAT-type (hydrogen atom transfer) mechanisms. The 70% methanol extracts and its diethyl ether, ethyl acetate, n-butanol and water fractions were tested in parallel with the phenolic standards, e.g., caffeic acid, quercet...

amorphous silicate sample showing the typical fractal aggregate texture. CHARACTERIZATION OF AMORPHOUS SILICATE AND ORGANIC BEARING MIXTURES IN ANTICIPATION OF THE OSIRIS-REx ARRIVAL AT BENNU. K. L. Donaldson Hanna, L. P. Keller, D. L. Schrader, T. J. McCoy, N. E. Bowles, N. M. Johnson, J. A. Nuth, G. D. Cody, H. C. Connolly Jr., L. F. Lim and D. S. Lauretta, University of Oxford (Kerri.Donalds...

The classical matrix groups are of fundamental importance in many parts of geometry and algebra. Some of them, like Sp.n/, are most conceptually defined as groups of quaternionic matrices. But, the quaternions not being commutative, we must reconsider some aspects of linear algebra. In particular, it is not clear how to define the determinant of a quaternionic matrix. Over the years, many peopl...

COVERAGE: Lecture Notes 6 and 7; Problem Sets 3 and 4; Rowan-Robinson, Chapters 4 and 5; Weinberg, Chapters 4 and 5. One of the problems on the quiz will be taken verbatim (or at least almost verbatim) from either the homework assignments, or from the starred problems from this set of Review Problems. The starred problems are the ones that I recommend that you review most carefully: Problems 1,...

The classical matrix groups are of fundamental impor­ tance in many parts of geometry and algebra. Some of them, like Sp(n), are most conceptually defined as groups of quaternionic matrices. But, the quaternions not being commutative, we must reconsider some as­ pects of linear algebra. In particular, it is not clear how to define the determinant of a quaternionic matrix. Over the years, many p...