In 1937, Siemens described a Dutch family with superficial blistering, flexural hyperkeratosis, and characteristic mauserung appearance. Since then, less than 20 kindreds with this condition have been described in the English dermatologic literature. A 14-year-old boy presented with history of recurrent blistering and peeling of skin since the age of 1 month, predominantly seen over limbs and t...

According to the now widely accepted “onion-model” of the organization of open source software development, an open source project typically relies on a core of developers that is assisted by a larger periphery of users. But what does the role of the periphery consist of? Raymond’s Linus’s Law which states that “given enough eyeballs all bugs are shallow” suggests at least one important functio...

We investigate the combinatorics of a topological space that is generated by the set of edgeweighted finite trees. This space arises by multiplying the weights of edges on paths in trees and is closely connected to tree reconstruction problems involving finite state Markov processes. We show that this space is a contractible finite CW-complex whose face poset can be described via a partial orde...

UNLABELLED Hemoglobin- and catalase-polymerized PEDOT PSS were characterized by X-ray photoelectron spectroscopy, visible and near-IR spectroscopy, FTIR, and ESR. Hemoglobin-polymerized PEDOT PSS possesses bipolarons, while catalase-polymerized PEDOT PSS is dominated by polarons. Use of heme-bound iron as an oxidant yields PEDOT PSS with conductivity of 19.5 S cm(-1) in a single-step aq...

Background: Comedone formation has an essential role in pathophysiology of acne, therefore destroying of comedones and preventing of comedone formation is very important in acne treatment. Objective: To determine the effect of superficial peeling with 70% glycolic acid in the improvement of acne. Patients and Methods: In this open clinical trial without control group, 30 patients with acn...