Recent progress on research of molybdenite flotation: A review.

Molybdenum is an important alloy element for metallurgical industry because of its high temperature stability. As the major mineral reserve for molybdenum, molybdenite (MoS) is commonly found in porphyry copper deposits. Molybdenite is naturally floatable and can be separated from copper sulfide mineral using froth flotation.

Design and Fabrication of New High Entropy Alloys for Evaluating Titanium Replacements in Additive Manufacturing.

High entropy alloys (HEAs) were prepared using the powder bed fusion (PBF) technique. Among titanium free alloys AlCoCrFeNiMn, CoCrFeMnNi, AlCoCrFeNi, and AlCoCrFeNi have been further investigated. A cost comparison was done for these four alloys as well as the titanium-based alloys AlCoCrFeNiTi and AlCoCrFeNiTi.

Minimizing electron-hole pair recombination through band-gap engineering in novel ZnO-CeO-rGO ternary nanocomposite for photoelectrochemical and photocatalytic applications.

A novel ZnO-CeO-rGO (ZCG) ternary nanocomposite with varying ZnO/CeO weight proportions was synthesized by a hydrothermal process for photoelectrochemical water splitting and photocatalytic application. XRD diffraction peaks of ZCG nanocomposites displayed the patterns of ZnO and CeO nanoparticles, and SEM revealed irregular flake-like particles, which were uniformly decorated on the rGO matrix. Increase in the intensity ratio of D and G bands from Raman spectra revealed changes in oxygen bonding in the ZnO-rGO (ZG) and ZCG nanocomposites.

Synergistic effect of band convergence and carrier transport on enhancing the thermoelectric performance of Ga doped CuTe at medium temperatures.

Recent advances in high performance thermoelectric materials have garnered unprecedented attention owing to their capability of direct transformation of heat energy to useful electricity. Copper Telluride (CuTe), a member of the chalcogenide family has emerged as a state-of-the-art thermoelectric material with low thermal conductivity and high thermoelectric (TE) performance, however, this material exhibits exceptional transport properties only at very high temperatures. In this study, we have investigated the synergistic effects of Ga doping on the TE performance by first principles calculations along with experimental validations.

Hybridized Tungsten Oxide Nanostructures for Food Quality Assessment: Fabrication and Performance Evaluation.

Tungsten oxide based micro and nanosized structures possess good capacitance as well as enhanced rate capability. Such properties are useful in various applications including electrochemical supercapacitors. Apart from supercapacitance, WO and their 2D integrated structures have been modified using different methods to widen their range of the utility.

Fabrication and response of alpha-hydroxybutyrate sensors for rapid assessment of cardiometabolic disease risk.

Early diagnosis and treatment can prevent or delay progression of early-stage type 2 diabetes and prediabetes. Unfortunately, tests such as hemoglobin A1c (HbA1c)/fasting plasma glucose (FPG) alone fail to diagnose or miscategorize up to 40% of individuals with impaired glucose tolerance (IGT) or frank diabetes based on the rarely utilized oral glucose tolerance test (OGTT). The serum metabolite alpha-hydroxybutyrate (AHB) is increasingly recognized as a reliable IGT and diabetes predictor, and can be measured using liquid chromatography-tandem mass spectrometry.

Augmented Z scheme blueprint for efficient solar water splitting system using quaternary chalcogenide absorber material.

Photoelectrochemical hydrogen (H2) production from water is a key method of addressing energy needs using an environmentally friendly approach. In the last two decades we have witnessed the evolution of many different expensive catalysts, photoelectrodes and related technologies, especially those involving precious metals and use of acidic or basic electrolytes for hydrogen production. Cu2ZnSnS4 (CZTS) is a relatively new candidate in the category of efficient photocathodes, due to its high absorption coefficient and near optimal energy band gap.

Light emitting diodes based on carbon dots derived from food, beverage, and combustion wastes.

One important resource for material synthesis is waste. Utilization of waste as a resource for material synthesis is an environmentally responsible approach that reduces the need for virgin resources and subsequent processing. In this report a method to produce multicolored, luminescent carbon dots (CDs) and subsequent fabrication of light emitting diodes from food, beverage, and combustion wastes, is discussed.

Prioritizing investments in innovations to protect women from the leading causes of maternal death.

PATH, an international nonprofit organization, assessed nearly 40 technologies for their potential to reduce maternal mortality from postpartum hemorrhage and preeclampsia and eclampsia in low-resource settings. The evaluation used a new Excel-based prioritization tool covering 22 criteria developed by PATH, the Maternal and Neonatal Directed Assessment of Technology (MANDATE) model, and consultations with experts. It identified five innovations with especially high potential: technologies to improve use of oxytocin, a uterine balloon tamponade, simplified dosing of magnesium sulfate, an improved proteinuria test, and better blood pressure measurement devices.

Making existing technology safer in healthcare.

Background: Technology, equipment and medical devices are vital for effective healthcare throughout the world but are associated with risks. These risks include device failure, inappropriate use, insufficient user-training and inadequate inspection and maintenance. Further risks within the developing world include challenging conditions of temperature and humidity, poor infrastructure, poorly trained service providers, limited resources and supervision, and inappropriately complex equipment being supplied without backup training for its use or maintenance.

The use of chlorhexidine to reduce maternal and neonatal mortality and morbidity in low-resource settings.

Of the 4 million neonatal deaths and 500,000 maternal deaths that occur annually worldwide, almost 99% are in developing countries and one-third are associated with infections. Implementation of proven interventions and targeted research on a select number of promising high-impact preventative and curative interventions are essential to achieve Millennium Development Goals for reduction of child and maternal mortality. Feasible, simple, low-cost interventions have the potential to significantly reduce the mortality and severe morbidity associated with infection in these settings.

The importance of temperature and viscosity effects for surfactant adsorption measurements made using the electrochemical quartz crystal microbalance.

The measurement of adsorbed surfactant is important to fields such as corrosion inhibition, metal cleaning, and separation technologies. The electrochemical quartz crystal microbalance (EQCM) is an important tool that can be used to measure adsorbed surfactant. However, such measurements are subject to significant temperature and viscosity effects that must be appropriately considered.

Achieving appropriate design and widespread use of health care technologies in the developing world. Overcoming obstacles that impede the adaptation and diffusion of priority technologies for primary health care.

Objectives: To identify and describe constraints facing the development and dissemination of technologies appropriate for public health care challenges and solutions in the developing world.

Methods: Review of lessons learned in development and introduction of numerous health technologies as experienced by a non-profit organization working on technologies for 25 years.

Results: Many obstacles prevent appropriate technologies from reaching widespread use and acceptance.

Using technology to reduce maternal mortality in low-resource settings: challenges and opportunities.

Technology--consisting of equipment, supplies, procedures, and techniques--can play a central role in the management of pregnancy-related complications. Implementing proven interventions in developing countries and low-resource settings has been difficult, however, because skilled human and financial resources are constrained, and the physical and epidemiological environments are challenging. This article examines the limitations and challenges affecting health technologies in low-resource settings and suggests a framework for characterizing specific technology-based solutions.