Optimizing the ionomer/carbon (I/C) ratio in catalyst layer (CL) of polymer electrolyte membrane fuel cells (PEMFCs) is vital for maximizing PEMFC efficiency. In this study, effect I/C a platinum (Pt) loaded on polybenzimidazole (PBI)-coated Vulcan (Vulcan/PBI/Pt) compared with conventional Pt (Vulcan/Pt). Furthermore, study determines that CL comprising Vulcan/PBI/Pt an = 0.2 exhibits highest ...

[Hay03] defines the non-temporal semantics of a simulation language, Demos, in order to be able to model processes acting on shared resources. It also defines the semantics of a logic, PBI, an extension of the Logic of Bunched Implications [POY02, Pym02, OP99], to query these models. This document describes a simple model checker capable of checking a subclass of PBI formulæ against Demos model...

The nucleotide sequence of gene PBI, the putative translational product of which is homologous to salivary proline-rich protein P-B, has been determined. PBI is 6.4 kb long and contains 3 exons. PBI appears to code for the precursor of a proline-rich protein which we have designated P-B1. The P-B1 precursor is composed of 134 amino acid residues including 22 residues of signal sequence, 23 resi...

Propagation-based X-ray phase-contrast computed tomography (PBI) has already proven its potential in a great variety of soft-tissue-related applications including lung imaging. However, the strong edge enhancement, caused by the phase effects, often hampers image segmentation and therefore the quantitative analysis of data sets. Here, the benefits of applying single-distance phase retrieval pri...

Background: The present investigation is motivated by the fact that the incidence of visual impairment is increasing all over the world. Blind people may encounter specific problems in plaque control, leading to a higher risk of periodontal disorders. Objectives: To evidence the effect of alternative senses, other than sight, for controlling plaque formation and reducing periodontal indices in ...

Efficient phosphorescent orange, blue and white organic light-emitting devices (OLEDs) with non-doped emissive layers were successfully fabricated. Conventional blue phosphorescent emitters bis [4,6-di-fluorophenyl]-pyridinato-N,C(2')] picolinate (Firpic) and Bis(2,4-difluorophenylpyridinato) (Fir6) were adopted to fabricate non-doped blue OLEDs, which exhibited maximum current efficiency of 7....

conceptually traumatic brain injury (tbi) can be classified from a mechanistic perspective as: 1) closed, 2) penetrating, 3) blast, and 4) crush injuries. thus, tbi is a heterogeneous disease and each type of brain injury has different characteristic features often necessitating different approaches to management. the first edition of the guidelines for management and prognosis of penetrating b...

More and more assays for the serodiagnosis of Lyme borreliosis (LB) are based on recombinant antigens. However, so far, there is no consensus as to which are the most specific and sensitive proteins and how they should be used in combination to obtain tests with the best discrimination abilities. The present study was preceded by a detailed analysis of Western blots (WB) using whole-cell lysate...

A double-blind, placebo-controlled clinical trial was performed to investigate the effectiveness of a herbal-based dentifrice in the control of gingivitis. Forty volunteers completed the 84-day study. All subjects were balanced for parameters measured - plaque index (PI), community periodontal index of treatment needs (CPITN) and papillary bleeding index (PBI). The dentifrice was effective in r...

Providing a fast and accurate (exact or approximate) access to large-scale multidimensional data is a ubiquitous problem and dates back to the early days of large-scale Information Systems. Similarity search, requiring to resolve nearest neighbor (NN) searches, is a fundamental tool for structuring information space. Permutation-based Indexing (PBI) is a reference-based indexing scheme that acc...