992 resultados para Jewish Studies


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Brochure with history of the Jewish community of Cracow, Poland (district of Kazimierz).

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Mr. William Adler, 1984.

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Calonectria ilicicola, Gliocladiopsis sp. and Ilyonectria liriodendri were isolated from diseased roots of young avocado trees. Pathogenicity studies with seedlings of three avocado cultivars, Velvick, Hass and Reed, demonstrated that Calonectria ilicicola is a severe root rot pathogen, reducing the biomass of healthy roots, and reducing plant height over time. Calonectria ilicicola was re-isolated from diseased roots. Ilyonectria liriodendri and Gliocladiopsis sp. were not pathogenic and plant height was increased after Gliocladiopsis sp. amendment compared to all other treatments in trials with cvs Velvick and Hass.

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Interference fits are used extensively in aircraft structural joints because of their improved fatigue performance. Recent advances in analysis of these joints have increased understanding of the nonlinear load-contact and load-interfacial slip variations in these joints. Experimental work in these problems is lacking due to difficulties in determining partial contact and partial slip along the pin-hole interface. In this paper, an experimental procedure is enumerated for determining load-contact relations in interference/clearance fits, using photoelastic models and applying a technique for detecting progress of separation/contact up to predetermined locations. The study incorporates a detailed procedure for model making, controlling interference, locating break of contact up to known locations around the interface, estimating optically the degree of interference, determining interfacial friction and evaluating stresses in the sheet. Experiments, simulating joints in large sheets, were carried out under both pin and plate loads. The present studies provide load-separation behavior in interference joint with finite interfacial friction.

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A suite of co-occurring eriophyid mite species are significant pests in subtropical Australia, causing severe discolouration, blistering, necrosis and leaf loss to one of the region's most important hardwood species, Corymbia citriodora subsp. variegata (F. Muell.) K. D. Hill & L. A. S. Johnson (Myrtaceae). In this study, we examined mite population dynamics and leaf damage over a 1-year period in a commercial plantation of C. citriodora subsp. variegata. Our aims were to link the incidence and severity of mite damage, and mite numbers, to leaf physical traits (moisture content and specific leaf weight (SLW)); to identify any seasonal changes in leaf surface occupancy (upper vs. lower lamina); and host tree canopy strata (upper, mid or lower canopy). We compared population trends with site rainfall, temperature and humidity. We also examined physical and anatomical changes in leaf tissue in response to mite infestation to characterize the plants' physiological reaction to feeding, and how this might affect photosynthesis. Our main findings included positive correlations with leaf moisture content and mite numbers and with mite numbers and damage severity. Wet and dry leaf mass and SLW were greater for damaged tissue than undamaged tissue. Mites were distributed equally throughout the canopy and on both leaf surfaces. No relationships with climatic factors were found. Damage symptoms occurred equally and were exactly mirrored on both leaf surfaces. Mite infestation increased the overall epidermal thickness and the number and size of epidermal cells and was also associated with a rapid loss of chloroplasts from mesophyll cells beneath damage sites. The integrity of the stomatal complex was severely compromised in damaged tissues. These histological changes suggest that damage by these mites will negatively impact the photosynthetic efficiency of susceptible plantation species.

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Photograph contained within portfolio including title page and signatures

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The conformational analysis by energy calculation is described for some acyclic sugars such as D-glucitol, D-mannitol and galactitol. Planar Zig-zag conformation is the most favoured conformation for the three alditols. However, the energy difference between the ‘bent-chain’ and ‘straight-chain’ conformation is less in the case of D-glucitol (0.9 Kcal Mole-1)compared to those of D-mannitol (~2.4 Kcal mole-1)and galactitol (~2.5 Kcal Mole-1).The solvent accessibility studies favour bent –chain conformation for D-glucitol and straight-chain conformation for D-mannitol and glactitol. These conformations, arrived at by theorticle analysis are compared with those abseverd in the solid state determined by X=ray differaction techinique and their acetylated derivatives in solution by NMR technique. These studies suggest that, when the energy difference between straight and bent conformations is small, latticc energy (in the case of solids) and solvent (in the case of solutions) do play a dominant role on the favoured conformations.

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Last known photograph of Sperber family before they were killed in the Holocaust

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Conformational energy calculations were carried out on penicillin α-and Β-sulfoxides and δ2- and δ3-cephalosporins, in order to identify the structural features governing their biological activity. Results on penicillin Β-sulfoxide indicated that in its favoured conformation, the orientation of the aminoacyl group was different from the one required for biological activity. Penicillin α sulfoxide, like penicillin sulfide, favoured two conformations of nearly equal energies, but separated by a much higher energy barrier. The reduced activity of the sulfoxides despite the nonplanarity of their lactam peptide indicated that the orientations of the aminoacyl and carboxyl groups might also govern biological activity. δ3-cephalosporins favoured two conformations of nearly equal energies, whereas δ2-cephalosporins favoured only one conformation. The lactam peptide was moderately nonplanÄr in the former, but nearly planar in the latter. The differences in the.preferred orientations of the carboxyl group between penicillins and cephalosporins were correlated with the resistance of cephalosporins to penicillinases.

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The Combined Jewish Philanthropies (CJP) of Boston, Massachusetts is the oldest federated Jewish philanthropy in the United States. The current incarnation of CJP was formed in 1960, when two separate federated philanthropies – the Combined Jewish Appeal and Associated Jewish Philanthropies – merged to create a single organization dedicated to serving the needs of Boston’s Jewish community. CJP’s records contain the history of several other organizations, from the forerunners of the current Federation to the Jewish institutions supported by CJP. Their beginnings can be traced to the founding of the United Hebrew Benevolent Association (UHBA) in 1864 at the Pleasant Street Synagogue (now Temple Israel.) This collection contains meeting minutes, correspondence, photographs, scrapbooks, financial documents and ledgers, appeal information, publicity, programs, brochures and other written documents relating CJP’s history.

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Clippings on the dedication of the memorial of the former Jewish community of Lichtenau held on April 13 1986; commemoration speech by Ilse Noel.