Directed Photochemically Mediated Nickel-Catalyzed (Hetero)arylation of Aliphatic C-H Bonds.

Site-selective functionalization of unactivated C(sp)-H centers is challenging because of the ubiquity and strength of alkyl C-H bonds. Herein, we disclose a position-selective C(sp)-C(sp) cross-coupling reaction. This process engages C(sp)-H bonds and aryl bromides, utilizing catalytic quantities of a photoredox-capable molecule and a nickel precatalyst.

Strategies to Generate Nitrogen-centered Radicals That May Rely on Photoredox Catalysis: Development in Reaction Methodology and Applications in Organic Synthesis.

For more than 70 years, nitrogen-centered radicals have been recognized as potent synthetic intermediates. This review is a survey designed for use by chemists engaged in target-oriented synthesis. This review summarizes the recent paradigm shift in access to and application of -centered radicals enabled by visible-light photocatalysis.

Two teams, one mission: A study using EMS units in hospital triage during active-shooter and other mass-casualty events.

Background: Recent mass-casualty events have exposed errors with common assumptions about response proc-esses, notably triage and transport of patients. Response planners generally assume that the majority of patients from a mass-casualty event will have received some level of field triage and transport from the scene to the hospital will have been coordinated through on-scene incident command. When this is not the case, emergency response at the hospital is hampered as staff must be pulled to handle the influx of untriaged patients.

Glenohumeral osteoarthritis: an overview of etiology and diagnostics.

Background And Aims: Osteoarthritis (OA) is the world's most common joint disease and there is currently no cure. Glenohumeral osteoarthritis (GHOA) accounts for an estimated 5%-17% of patients with shoulder complaints. The etiology of GHOA is multifactorial, and we review the various non-specific and specific risk factors and further sub-classify them into local and systemic factors.

Photochemically Mediated Nickel-Catalyzed Synthesis of -(Hetero)aryl Sulfamides.

A general method for the -arylation of sulfamides with aryl bromides is described. The protocol leverages a dual-catalytic system, with [Ir(ppy)(dtbbpy)]PF as a photosensitizer, NiBr·glyme as a precatalyst, and 1,8-diazabicyclo(5.4.

Correlating the Integral Sensing Properties of Zeolites with Molecular Processes by Combining Broadband Impedance and DRIFT Spectroscopy--A New Approach for Bridging the Scales.

Zeolites have been found to be promising sensor materials for a variety of gas molecules such as NH₃, NOx, hydrocarbons, etc. The sensing effect results from the interaction of the adsorbed gas molecules with mobile cations, which are non-covalently bound to the zeolite lattice. The mobility of the cations can be accessed by electrical low-frequency (LF; mHz to MHz) and high-frequency (HF; GHz) impedance measurements.

Zeolites as nanoporous, gas-sensitive materials for in situ monitoring of DeNO(x)-SCR.

In a proof-of-concept study we demonstrate in situ reaction monitoring of DeNO(x)-SCR on proton-conducting zeolites serving as catalyst and gas sensor at the same time. By means of temperature-dependent impedance spectroscopy we found that the thermally induced NH(3) desorption in H-form and in Fe-loaded zeolite H-ZSM-5 follow the same process, while a remarkable difference under DeNO(x)-SCR reaction conditions was found. The Fe-loaded catalyst shows a significantly lower onset temperature, and time-dependent measurements suggest different SCR reaction mechanisms for the two catalysts tested.

Using the linkage model for integrating evidence into home care nursing practice.

A home care agency's patient population with heart failure demonstrated improved outcomes after the agency implemented an evidence-based protocol. The model holds promise for use in other agencies working to improve patient outcomes as well as have an impact on decreasing costs.