In-Situ Characterization of Cathode Catalyst Degradation in PEM Fuel Cells.

The composition and morphology of the cathode catalyst layer (CCL) have a significant impact on the performance and stability of polymer electrolyte membrane fuel cells (PEMFC). Understanding the primary degradation mechanism of the CCL and its influencing factors is crucial for optimizing PEMFC performance and durability. Within this work, we present comprehensive in-situ characterization data focused on cathode catalyst degradation.

[CANVAS: case report on a novel repeat expansion disorder with late-onset ataxia].

This article presents the case of a 74-year-old female patient who first developed a progressive disease with sensory neuropathy, cerebellar ataxia and bilateral vestibulopathy at the age of 60 years. The family history was unremarkable. Magnetic resonance imaging (MRI) showed atrophy of the cerebellum predominantly in the vermis and atrophy of the spinal cord.

Use of a Developmental Milestone Chart (DMC) in Rural Bangladesh to Educate Health Workers and Stimulate Referral for Early Diagnosis and Intervention.

We aimed to determine the feasibility of using a simplified Developmental Milestone Chart (DMC) for assessment of neurodevelopmental status of children of age ≥1 month and ≤8 years. Participants were assessed by medical practitioners using DMC as part of regular health checkups in three sub-districts in Bangladesh between January and May 2017. Total 256 children were recruited (41.

Outbreak of E. coli O157:H7 Infections Associated with Exposure to Animal Manure in a Rural Community - Arizona and Utah, June-July 2017.

On June 26, 2017, a hospital in southern Utah notified the Utah Department of Health of Shiga toxin-producing Escherichia coli (STEC) O157:H7 infections in two children from a small community on the Arizona-Utah border. Both children developed hemolytic uremic syndrome, characterized by hemolytic anemia, acute kidney failure, and thrombocytopenia and died within a few days of illness onset. Over the next few days, several more STEC-associated illnesses were reported in residents of the community.

FireStem2D--a two-dimensional heat transfer model for simulating tree stem injury in fires.

FireStem2D, a software tool for predicting tree stem heating and injury in forest fires, is a physically-based, two-dimensional model of stem thermodynamics that results from heating at the bark surface. It builds on an earlier one-dimensional model (FireStem) and provides improved capabilities for predicting fire-induced mortality and injury before a fire occurs by resolving stem moisture loss, temperatures through the stem, degree of bark charring, and necrotic depth around the stem. We present the results of numerical parameterization and model evaluation experiments for FireStem2D that simulate laboratory stem-heating experiments of 52 tree sections from 25 trees.

Global perspective on early diagnosis and intervention for children with developmental delays and disabilities.

Low- and middle-income countries are experiencing a significant reduction in mortality of children under 5 years of age. This reduction is bringing in its wake large numbers of surviving children with developmental delays and disabilities. Very little attention has been paid to these children, most of whom receive minimal or no support.

[Determining the support needs of patients who live at home following a stroke].

The study "determining the support needs of patients who live at home following a stroke" was chosen because stroke is (one of) the most significant causes of permanent handicap in the elderly. (This project was developed as part of the studies for the degree of Nurse Manager/Teacher:) The results are based on qualitative and quantitative data collected from focus groups and a standardised questionnaire. Due to the small number of participants (57) the study cannot be regarded as representative.

Ozone sensitivity in hybrid poplar is correlated with a lack of defense-gene activation.

Ozone is a major gaseous pollutant thought to contribute to forest decline. Although the physiological and morphological responses of forest trees to ozone have been well characterized, little is known about the molecular basis for these responses. Our studies compared the response to ozone of ozone-sensitive and ozone-tolerant clones of hybrid poplar (Populus maximowizii x Populus trichocarpa) at the physiological and molecular levels.

Hypoxia and ischaemia in buffer-perfused toad hearts.

Previous studies on the effects of ischaemia or hypoxia in ectothermic vertebrate hearts have generally used preparations that were not performing at physiological levels of pressure and flow. The conclusions that ischaemia or hypoxia are not stressful to these organisms were examined in another species, Bufo marinus, in which a buffer-perfused heart was performing physiological levels of work. The in situ preparation demonstrated the Frank-Starling relationship and mechanical characteristics similar to the hearts of intact animals.

Physical therapy as a determinant of change in the cerebral palsied infant.

Twenty-four children under 18 months of age with an initial diagnosis of cerebral palsy were observed for minimum of six months on either experimental or control physical therapy programs using a double-blind study design. Medical and therapy evaluations indicated definite changes in motor, social, and management areas for those subjected to the experimental procedure and particularly among children expected to show higher intelligence. Change is found to be somewhat correlated with age at entry to the study and is more often associated with less actual treatment time.