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In situ analysis of catalyst composition during gold catalyzed GaAs nanowire growth

Semiconductor nanowires offer the opportunity to incorporate novel structures and functionality into electronic and optoelectronic devices. A clear understanding of the nanowire growth mechanism is essential for well-controlled growth of structures with desired properties, but the understanding is currently limited by a lack of empirical measurements of important parameters during growth, such as

Purification and characterization of an extracellular serine protease from the nematode-trapping fungus Arthrobotrys oligospora

When grown in liquid cultures allowing the formation of nematode traps, the fungus Arthrobotrys oligospora produced two extracellular proteases hydrolysing the chromogenic substrate Azocoll. The protease activity was separated into two fractions (FI and FII) using anion-exchange chromatography. In bioassays, protease(s) present in FII immobilized the free-living nematode Panagrellus redivivus indi

Evidence for Bisphenol B Endocrine Properties : Scientific and Regulatory Perspectives

Background: The substitution of bisphenol A (BPA) by bisphenol B (BPB), a very close structural analog, stresses the need to assess its potential endocrine properties.Objective: This analysis aimed to investigate whether BPB has endocrine disruptive properties in humans and in wildlife as defined by the World Health Organization (WHO) definition used in the regulatory field, that is, a) adverse ef

Improved methods for pancreatic islet transplantation

The present invention provides methods that increases the graft survival rate of pancreatic islets after pancreatic islet transplantation, maintains the survival of pancreatic islets ex vivo, and reduce the number of transplanted pancreatic islets required for normalizing blood glucose levels. When performing pancreatic islet transplantation, by pre-incubating pancreatic islets with stem cells or

Benefits for multiple ecosystem services in Peruvian coffee agroforestry systems without reducing yield

Crop production often comes at the expense of losses in ecosystem services and biodiversity; however, this might not always be the case. Here we test the effects of shade gradients and agricultural inputs on trade-offs or synergies between coffee yield and ecosystem services and biodiversity data for smallholder coffee plantations of Arabica coffee in Peru. We collected data using surveys (n = 162

Investigation of lithium and fluorine content in geological materials using Nuclear Reaction Analysis (NRA)

This work focuses on the optimization of the Nuclear Reaction Analysis (NRA) technique to determine the content of lithium and fluorine in geological materials. Measuring low concentration of these isotopes is of great relevance in many fields such as geological, astrophysical, biological and material sciences. Light elements as lithium and fluorine are considered as geochemical tracers in various

Workload and cross-harvest kidney injury in a Nicaraguan sugarcane worker cohort

OBJECTIVES: To examine the association between workload and kidney injury in a fieldworker cohort with different levels of physically demanding work over a sugarcane harvest, and to assess whether the existing heat prevention efforts at a leading occupational safety and health programme are sufficient to mitigate kidney injury. METHODS: Biological and questionnaire data were collected before (n=54

Optic flow cues help explain altitude control over sea in freely flying gulls

For studies of how birds control their altitude, seabirds are of particular interest because they forage offshore where the visual environment can be simply modelled by a flat world textured by waves then generating only ventral visual cues. This study suggests that optic flow, i.e. the rate at which the sea moves across the eye's retina, can explain gulls' altitude control over seas. In particula

Imagining the Land of Compassion

Western society has increasingly turned to different kinds of spirituality in dealing with an accelerated tempo and demands in everyday post-modern life. Yoga, meditation, mindfulness and other forms of modalities, often connected to ancient eastern thinking, are taught and implemented in management and leadership practises (Cederström & Spicer, 2015). Although organizational theorizing has prWestern society has increasingly turned to different kinds of spirituality in dealing with an accelerated tempo and demands in everyday post-modern life. Yoga, meditation, mindfulness and other forms of modalities, often connected to ancient eastern thinking, are taught and implemented in management and leadership practises (Cederström & Spicer, 2015). Although organizational theorizing has pr

Factoring in the Spatial Effects of Symbolic Number Representation

Spatial constituents of adult symbolic number representation produce effects of size-value congruity, Spatial Numerical Association of Response Codes (SNARC), and numerical distance. According to behavioral experiments, these effects belong to distinct processing stages. Yet, these effects evoke overlapping responses in both early and late Event Related Potentials (ERPs). To probe whether these ov

The heme and radical scavenger α1-microglobulin (A1M) confers early protection of the immature brain following preterm intraventricular hemorrhage

Background: Germinal matrix intraventricular hemorrhage (GM-IVH) is associated with cerebro-cerebellar damage in very preterm infants, leading to neurodevelopmental impairment. Penetration, from the intraventricular space, of extravasated red blood cells and extracellular hemoglobin (Hb), to the periventricular parenchyma and the cerebellum has been shown to be causal in the development of brain i

Contributions of dust and biomass burning to aerosols at a Colorado mountain-top site

Visible Multifilter Rotating Shadowband Radiometer (vis-MFRSR) data were collected at Storm Peak Laboratory (SPL), a mountain-top facility in northwest Colorado, from 1999 to 2011 and in 2013. From 2011 to 2014, in situ measurements of aerosol light scattering were also obtained. Using these data sets together, the seasonal impact of dust and biomass burning is considered for the western USA. Anal

Diffuse visual field loss and glaucoma

Abstract. It is often claimed that general reduction, or diffuse loss, of perimetric sensitivity is an early sign of glaucoma. Our clinical experience and the results of a few other studies led us to believe otherwise. To investigate factors associated with diffuse field loss we reviewed 4222 Humphrey 30–2 threshold tests from 1582 eyes of 862 patients followed at our department. Most of these pat

Secondary structures and conformational changes in flagelliform, cylindrical, major, and minor ampullate silk proteins. Temperature and concentration effects

Orb weaver spiders use exceptionally complex spinning processes to transform soluble silk proteins into solid fibers with specific functions and mechanical properties. In this study, to understand the nature of this transformation we investigated the structural changes of the soluble silk proteins from the major ampullate gland (web radial threads and spider safety line); flagelliform gland (web s