background: acne vulgaris is a chronic inflammatory disease of the pilosebaceous follicles and one of the most common skin diseases.the peeling method has been recently found to be effective for acne treatment. this study aimed to compare the efficacy of pyruvic acid 50% and salicylic acid 30% peeling in the treatment of mild to moderate acne. materials and methods: in a prospective single?blin...

Let M be a closed, oriented manifold of dimension d. Let LM be the space of smooth loops in M . In [2] Chas and Sullivan defined a product on the homology H∗(LM) of degree −d. They then investigated other structure that this product induces, including a Lie algebra structure on H∗(LM), and an induced product on the S 1 equivariant homology, H S ∗ (LM). These algebraic structures, as well as oth...

The presence of numerous acquired comedones on the trunk and limbs of an adult patient, with no other family member affected and with no triggering factors to explain their presence, requires us to rule out those conditions in which comedones are the predominant clinical feature. The fact that these lesions appear in association with areas of lichen ruber planus presents the dilemma of whether ...

--Foraging behavior in the closely related Hairy (Picoides villosus) and Whiteheaded (P. albolarvatus) woodpeckers was examined in an area of sympatry to evaluate interseasonal and intersexual resource use. Similar foraging heights were observed for each species-sex sample during summer, but significant differences were evident during winter. Male and female White-heads maintained similar relat...

The question which has to be answered concerning Whiteheads metaphysic is whether his system is completed with Process and Reality [29] or whether his metaphysics only comes fully into view in his later works (esp. Adventures of Ideas [30] and Modes of Thought [31]). It will be argued that his main ideas are already fully developed in Process and Reality. Especially regarding the concept of tim...