Invariance group properties and exact solutions of equations describing time-dependent free surface flows under gravity

Using the method of infinitesimal transformations, a 6-parameter family of exact solutions describing nonlinear sheared flows with a free surface are found. These solutions are a hybrid between the earlier self-propagating simple wave solutions of Freeman, and decaying solutions of Sachdev. Simple wave solutions are also derived via the method of infinitesimal transformations. Incomplete beta functions seem to characterize these (nonlinear) sheared flows in the absence of critical levels.

Outdoor group portrait of attendees of the International Meeting of the World Union for Progressive Judaism; London.

Includes Rabbi Leo Baeck, E.L. Ehrlich of Basel, Herbert Strauss of Bern, and Rabbi Eugen Messinger of Bern

Group portrait including Kurt Rosenberg (seated second from left).

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Group of two women, one man and one child, sit on chairs outdoors Portraits Groups

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Group of two women, one man and one child, sit on chairs outdoors Portraits Groups

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Group portrait of the American Jewish Joint Distribution Committee; Shanghai Portraits; Groups

Photograph contained within portfolio including title page and signatures

Group portrait, 2nd reunion of the World War II 75th Station Hospital; Hotel Governor, Clinton, New York Portraits Groups

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Group portrait, welcome home dinner for ex-service personnel; Newark Beth Israel Hospital; Hotel Essex House, Newark, New Jersey Portraits Groups

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Group portrait, testimonial dinner for Dr. Paul Klemperer's 10th anniversary at Mt. Sinai Hospital given by his students; Cavanagh's, New York City Portraits Groups

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Phylogenetic lineage and pilus protein Spb1/SAN1518 affect opsonin-independent phagocytosis and intracellular survival of Group B Streptococcus

Opsonin-independent phagocytosis of Group B Streptococcus (GBS) is important in defense against neonatal GBS infections. A recent study indicated a role for GBS pilus in macrophage phagocytosis (Maisey et al Faseb J 22 2008 1715-24). We studied 163 isolates from different phylogenetic backgrounds and those possessing or lacking the gene encoding the pilus backbone protein, Spb1 (SAN1518, PI-2b) and spb1-deficient mutants of wild-type (WT) serotype III-3 GBS 874391 in non-opsonic phagocytosis assays using J774A.1 macrophages. Numbers of GBS phagocytosed differed up to 23-fold depending on phylogenetic background; isolates possessing spb1 were phagocytosed more than isolates lacking spb1. Comparing WT GBS and isogenic spb1-deficient mutants showed WT was phagocytosed better compared to mutants; Spb1 also enhanced intracellular survival as mutants were killed more efficiently. Complementation of mutants restored phagocytosis and resistance to killing in J774A.1 macrophages. Spb1 antiserum revealed surface expression in WT GBS and spatial distribution relative to capsular polysaccharide. spb1 did not affect macrophage nitric oxide and TNF-alpha responses; differences in phagocytosis did not correlate with N-acetyl d-glucosamine (from GBS cell-wall) according to enzyme-linked lectin-sorbent assay. Together, these findings support a role for phylogenetic lineage and Spb1 in opsonin-independent phagocytosis and intracellular survival of GBS in J774A.1 macrophages.

heilbrunn fritz; card to heilbrunn karl; group of unidentified soldiers Military; Portraits

correspondence: card from fritz to karl; returned 4/ 16

Professor Della Giovanna with unidentified group outside of the entrance to Madonna Del Cufo Church; Rome Portraits Groups

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Ermano Loevinson, leader of excursion, with unidentified group members; Ostia Portraits Groups

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Unidentified group; Rome Portraits; Groups

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Group of young school girls with teacher [?].

Note in German on back.