HAA by the first {Mn(iii)OH} complex with all O-donor ligands.

There is considerable interest in MnOH moieties, particularly in the stepwise changes in those O-H bonds in tandem with Mn oxidation state changes. The reactivity of aquo-derived ligands, {MOH}, is also heavily influenced by the electronic character of the other ligands. Despite the prevalence of oxygen coordination in biological systems, preparation of mononuclear Mn complexes of this type with all O-donors is rare.

Introductory Video as a Supplemental Application for General Surgery Residency Candidates: Concept, Implementation, Preliminary Outcomes, and Future Directions.

Objective: The residency selection process has changed dramatically over the past several years, primarily due to the COVID-19 pandemic causing a transition to virtual interviews and limiting sub-internship opportunities. Another new major change is the transition of the USMLE Step 1 examination from a numerical score to pass/fail as of January 2022. In anticipation of this major change, our program asked applicants to submit a short video clip expressing their interest.

Impact of systemic inflammatory response syndrome on acute ischemic stroke patients treated with mechanical thrombectomy.

Aim: Systemic inflammatory response syndrome (SIRS) has been associated with poor outcomes after acute ischemic stroke (AIS). The primary goal of this study was to determine whether SIRS status on admission correlated with functional outcomes in AIS treated with mechanical thrombectomy (MT).

Methods: Consecutive patients from September 2015 to April 2019 were retrospectively reviewed for SIRS on admission.

Treatment of Severe Hypertriglyceridemia With Insulin Infusions in Severe COVID-19: A Case Series.

Purpose: Rapid onset of severe hypertriglyceridemia was quickly recognized in critical COVID-19 patients. Associated causes have been due to secondary hemophagocytic lymphohystiocytosis (HLH) syndrome, medication-induced, or acute liver failure. Statins, omega-3 polyunsaturated acids, niacin, and fibrates are common oral lipid lowering therapy options in patients at risk for hypertriglyceridemia.

Comparison of First-Pass Efficacy Among Four Mechanical Thrombectomy Techniques: A Single-Center Experience.

Background: First-pass efficacy (FPE) is an established marker of technical and clinical efficacy among mechanical thrombectomy (MT) techniques. It is unclear what the optimal approach is in achieving FPE. We present a single-center experience comparing rates of FPE among 2 MT techniques and evaluate the potential predictors of FPE among other outcomes.

Inter-molecular inter-actions in a phenol-substituted benzimidazole.

Hydrogen bonding plays an important role in the design of solid-state structures and gels with desirable properties. 1-(4-Hydroxybenzyl)-2-(4-hydroxyphenyl)-5,6-dimethyl-1-benzimidazole was isolated as the acetone disolvate, CHNO·2CHO. O-H⋯N hydrogen bonding between benz-imidazole mol-ecules results in chains parallel to [010].

The Importance of Improving Youths' Attitudes Toward Science (ATS): A Validation of a Short Form Assessment of Attitudes in Science Constructs for Fourth Grade (AASC-4).

If children have opportunities to develop positive attitudes toward learning science, the pipeline to science careers can be maintained and enhanced. This article describes the development and validation of a short form, 24-item, ssessment of Attitudes in Science Constructs for Fourth Grade (AASC-4) for utilization in future research aimed at improving youths' Attitudes Toward Science (ATS). A researcher developed long form, 50-item AASC-4 was administered in an intervention and comparison, pre- and post-implementation science education study (n=1,117).

Structural characterization, gelation ability, and energy-framework analysis of two bis(long-chain ester)-substituted 4,4'-biphenyl compounds.

There are few examples of single-crystal structure determinations of gelators, as gel formation requires that the dissolved gelator self-assemble into a three-dimensional network structure incorporating solvent via noncovalent interactions rather than self-assembly followed by crystallization. In the solid-state structures of the isostructural compounds 4,4'-bis[5-(methoxycarbonyl)pentyloxy]biphenyl (BBO6-Me), CHO, and 4,4'-bis[5-(ethoxycarbonyl)pentyloxy]biphenyl (BBO6-Et), CHO, the molecules sit on a crystallographically imposed center of symmetry, resulting in strictly coplanar phenyl rings. BBO6-Me behaves as an organogelator in various alcohol solvents, whereas BBO6-Et does not.

Proposed clinical internal carotid artery classification system.

Introduction: Numerical classification systems for the internal carotid artery (ICA) are available, but modifications have added confusion to the numerical systems. Furthermore, previous classifications may not be applicable uniformly to microsurgical and endoscopic procedures. The purpose of this study was to develop a clinically useful classification system.