The following is a modification of the first four sections of a paper with the same title published in the Anais da Academia Brasileira de Ciencias (volume 36, 245-259 (1964)), referred to herein as M [O]. The aim is to clarify the hypotheses of the original paper. The principal results are Theorems 4.1 and 4.2. Proofs of these theorems are found in §§5-10 of M [0]. Parts II and III are in M [O...

To the Editor: Obesity has been linked in part to the expanding portion sizes of prepackaged or preserved foods. However, adults frequently serve themselves the food they will eat for a meal or snack. We investigated how the size of serving bowls influences how much food a person decides to serve and consume in a natural environment. Methods. Graduate students were recruited to attend a Super B...

We have previously conducted a microflora analysis and examined the biofilm-forming activity of bacteria isolated from toilet bowl biofilms. In the present investigation, to reveal the strain involved in the formation of black dirt in toilet bowls, we performed a microflora analysis of the bacteria and fungi isolated from the black dirt of toilet bowls at ten homes. Among samples from different...

BACKGROUND Sodium hypochlorite (bleach) solutions are widely used as irrigants in endodontics. Their tendency to deteriorate is worsened by environmental influences which could cause loss of available chlorine content. METHODS This study measured the loss of available chlorine concentration in a range of sodium hypochlorite solutions under conditions which mimic clinical usage and storage. Do...

İnsanoğlu var olduğu günden beri beslenme, sığınma ve korunma gibi temel ihtiyaçları karşılamak amacıyla sürekli bir arayış içerisine girmiştir. Yaşamlarını daha kolay hale getirmek için girilen bu arayış, yüzyıllar boyunca farklı uygarlıklar doğada elde ettikleri ham maddeleri işleyebilmeyi öğrenmiş günlük kullanıma yönelik çeşitli ürünler ortaya çıkarmışlardır. İlk başlarda yiyeceğini saklama...