Investigating Cu-Site Doped Cu-Sb-S Nanoparticles Using Photoelectron and Electron Paramagnetic Resonance Spectroscopy.

Tetrahedrite (CuSbS) and famatinite (CuSbS) are good candidates for green energy applications because they possess promising thermoelectric and photovoltaic properties as well as contain earth-abundant and nontoxic constituents. Herein, X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), and electron paramagnetic resonance spectroscopy (EPR) methods examined inherent electronic properties and interatomic magnetic interactions of Cu-site doped tetrahedrite and famatinite nanomaterials. An energy-efficient modified polyol method was utilized for the synthesis of tetrahedrite and famatinite nanoparticles doped on the Cu-site with Zn, Fe, Ni, Mn, and Co.

How Different Gaming Genres Can Be Described by Required Skills and Motives for Playing.

With the drastic expansion of the games industry, psychological research is concerned with the question as to why certain genres might be more addictive than others. Besides specific games characteristics and motivational profiles of gamers, skills that are relevant to play certain games and genres might provide more insights for answering this question. An exploratory online survey was designed, asking for played genres, subjective relevance of required skills to play the game, gaming motives, and symptom severity.

Successful treatment of a child's pityriasis rubra pilaris (PRP) with ustekinumab and acitretin.

Pityriasis rubra pilaris (PRP) is a rare inflammatory skin disease that occurs with phenotypic variability in adults of all ages as well as in children. Data on the treatment of PRP is limited. Here, we report a 5-year-old girl with widespread skin involvement and prominent palmoplantar hyperkeratosis who was initially treated for psoriasis.

Trophic transfer efficiency in the Lake Superior food web: assessing the impacts of non-native species.

Ecosystem-based management relies on understanding how perturbations influence ecosystem structure and function (e.g., invasive species, exploitation, abiotic changes).

Investigators' sense of failure thwarted transparency in clinical trials discontinued for poor recruitment.

Background And Objective: When a randomized clinical trial (RCT) prematurely discontinues, it is essential that stakeholders do the right thing to ensure that lessons can be learnt and trust in clinical research is maintained. There is, however, a lack of evidence exploring this issue. This study aimed to examine clinical trial stakeholders' practices following trial discontinuation due to poor participant recruitment and their views on implications of such discontinuation.

A design metric for safety assessment of industrial robot design suitable for power- and force-limited collaborative operation.

This research presents a novel design metric based on maximum power flux density for the assessment of the severity of a transient physical contact between a robot manipulator and a human body region. Such incidental transient contact can occur in the course of a collaborative application of the power- and force-limiting type. The proposed metric is intended for the design and development of the robot manipulator as well as for the design of manufacturing applications.

Adaptive optics assisted and optical coherence tomography guided fs-laser system for ophthalmic surgery in the posterior eye.

While fs-lasers are clinically established for surgery in the anterior eye, their use in the posterior eye is impeded by aberrations and focus position errors. We implemented a laboratory system to investigate whether fs-laser surgery in the posterior eye is made more feasible by aberration correction and tomographic image guidance. Aberration correction is obtained by adaptive optics (AO) and the image guidance is accomplished by optical coherence tomography (OCT).

Respective predictive role of urinary albumin excretion and nonalbumin proteinuria on graft loss and death in renal transplant recipients.

Proteinuria is constituted by urinary albumin (UAE) and nonalbumin proteins (NAP). UAE was shown to predict ESRD and death. Whether NAP predicts graft or patient outcome is unknown in renal transplantation.

Why is there no bulk specific heat anomaly at the superconducting transition temperature of BaPb(1-x) Bi(x) O(3)?

Caloric measurements have shown that there is no bulk specific heat anomaly at the superconducting transition temperature of BaPb(0.75)Bi(0.25)O(3).

Ternary transition metal phosphides: High-temperature superconductors.

Two systems of ternary transition metal phosphides with the ordered Fe(2)P-type hexagonal structure are reported. They have the general formula MRuP and MOsP, in which M can be Ti, Zr, or Hf. An onset of the superconducting transition temperature as high as 13.

High-field, high-current superconductors.

This article deals with superconducting materials which have zero electrical resistance while carrying high electrical current densities (around 10(6) amperes per square centimeter) in high magnetic fields (up to 50 teslas). The technological importance of these materials is due to their use in the windings of loss-free electromagnets which generate high magnetic fields. Such magnets are the foundation for superconducting electrotechnology, a rapidly growing field whose applications include advanced electrical machines and fusion reactors.

Enhancement of Superconductivity through Lattice Softening.

The superconducting transition temperature of an iridium-yttrium eutectic is enhanced extraordinarily through lattice softening. This is shown by a drastically reduced Debye temperature.

P-State Pairing and the Ferromagnetism of ZrZn2.

It is ascertained that, within the range of stability, the transition temperature of the superconducting solutions between Ti and Zr and between Zr and Hf, and the Curie point of the corresponding ferromagnetic solutions between TiZn(2) and ZrZn(2) and between ZrZn(2) and HfZn(2), follow a parallel behavior. From this correlation it is concluded that the weak itinerant ferromagnetism of ZrZn(2) must be due to electron-phonon interaction. Theoretical arguments are advanced to show that the underlying mechanism is hindered p-state pairing, due to a strongly localized repulsive part of the pair-potential that acts as a Hubbard interaction and gives rise to a Stoner instability.

Clustering hypothesis of some high-temperature superconductors.

Cluster formation in metallic crystal lattices is important for most high-temperature superconductors.

Crystallography of new ternary borides.

The structure of new ternary rhodium borides has been determined. Isomorphism with the corresponding ternary cobalt borides is established.