Objectives: The aims of this study were: (1) to compare the frequency of isolation of mutans streptococci, (Streptococcus mutans, Steptococcus sobrinus), lactobacilli and yeasts (caries-associated micro-organisms) in the saliva of 1-year-old infants with and without dental caries; and (2) to determine if socio-economic background influenced the frequency isolation of bacteria and caries status....

Bibliothek des Ruhrgebiets eröffnet Ein Traum wird wahr – dachten wir, als es hieß, das elektronische Telefonbuch für die RUB wird endlich ins Netz gestellt. Dann ist es vorbei, das Hantieren mit dem unhandlichen Vorlesungsund Personalverzeichnis des jüngsten Wintersemesters, das ja zwei Semester lang als pfundiges Telefonbuch herhalten muss. Oder der X-te Griff zum längst abgegriffenen “richti...

Experience has shown that instructor-led trainings have some advantages thatcannot easily be overcome by technology enhanced learning. Direct interaction with aninstructor and among the group is often perceived as motivating and more personal. For smallgroups, in-class trainings can be more cost effective. On-line learning often requires aconsiderable amount of self-management a...

The integration of information dispersed among multiple repositories is a crucial step for accurate data analysis in various domains. In support of this goal, it is critical to devise procedures for identifying similar records across distinct data sources. At the same time, to adhere to privacy regulations and policies, such procedures should protect the confidentiality of the individuals to wh...

As an athlete accelerates, stops, and changes direction, numerous forces are transmitted to the lower extremities. The interaction between an athlete’s shoe and the playing surface has been indicated as a factor in lower extremity injury risk. In particular, high rotational forces may result in increased injuries to the lower extremities. Rotational traction forces produced by eight different c...

The background to the epidemic of bovine spongiform encephalopathy (BSE) among cattle in the United Kingdom is described as the possible origin of the disease and its relationship to scrapie in sheep. Although the epidemic in cattle is virtually over there is evidence of the transmission of the infectious agent to humans to produce a new variant of Creutzfeldt-Jakob disease. The current status ...

We report on the recent work on the van Dam-Veltman-Zakharov discontinuity for massive and partially massless gravitons in A(dS) space at one-loop. The question of whether the graviton has a small non-zero mass or exactly zero mass has been addressed by van Dam and Veltman, and Zakharov[l]. The difference is physically detectible, e.g. by effect on bending of light by the sun. The case for non-...

A MapReduce algorithm can be described by a mapping schema, which assigns inputs to a set of reducers, such that for each required output there exists a reducer that receives all the inputs that participate in the computation of this output. Reducers have a capacity, which limits the sets of inputs that they can be assigned. However, individual inputs may vary in terms of size. We consider, for...

LOW density lipoprotein (LDL) and epidermal growth factor (EGF) bind to receptors on the surface of human fibroblasts and are internalized in coated vesicles. Each of the ligands has been studied separately by electron microscopy in human fibroblasts using ferritin-LDL as one visual probe and 1251-EGF as a second visual probe. A mutant strain of human fibroblasts (J.D.) has been described in wh...