Buffered Coordination Modulation as a Means of Controlling Crystal Morphology and Molecular Diffusion in an Anisotropic Metal-Organic Framework.

Significant advances have been made in the synthesis of chemically selective environments within metal-organic frameworks, yet materials development and industrial implementation have been hindered by the inability to predictively control crystallite size and shape. One common strategy to control crystal growth is the inclusion of coordination modulators, which are molecular species designed to compete with the linker for metal coordination during synthesis. However, these modulators can simultaneously alter the pH of the reaction solution, an effect that can also significantly influence crystal morphology.

Cooperative carbon capture and steam regeneration with tetraamine-appended metal-organic frameworks.

Natural gas has become the dominant source of electricity in the United States, and technologies capable of efficiently removing carbon dioxide (CO) from the flue emissions of natural gas-fired power plants could reduce their carbon intensity. However, given the low partial pressure of CO in the flue stream, separation of CO is particularly challenging. Taking inspiration from the crystal structures of diamine-appended metal-organic frameworks exhibiting two-step cooperative CO adsorption, we report a family of robust tetraamine-functionalized frameworks that retain cooperativity, leading to the potential for exceptional efficiency in capturing CO under the extreme conditions relevant to natural gas flue emissions.

The Relationship between Cardiorespiratory Fitness and Montreal Cognitive Assessment Scores in Older Adults.

Background: Relatively little is known regarding the association between objective measures of physical function such as cardiorespiratory fitness (CRF) and cognitive function tests in healthy older adults.

Objective: To evaluate the relationship between CRF and cognitive function in adults aged 55 and older.

Methods: Between 2008 and 2017, 4,931 men and women underwent a comprehensive preventive physical exam at the Cooper Clinic in Dallas, Texas.

Changes in Montreal Cognitive Assessment Scores Over Time.

This study explored the utility of the Montreal Cognitive Assessment (MoCA) in the detection of cognitive change over time in a community sample (age ranging from 58 to 77 years). The MoCA was administered twice approximately 3.5 years apart ( n = 139).

Chemotherapy for Hodgkin's lymphoma in a patient receiving clozapine for treatment-resistant schizophrenia: use of the Mental Capacity Act 2005.

Treatment resistance occurs in approximately 30% of individuals with schizophrenia and is commonly treated with clozapine. Nodular sclerosing Hodgkin's lymphoma is a subtype of Hodgkin's lymphoma predominantly affecting those under 50 years of age. In this case report, an individual with treatment-resistant schizophrenia developed nodular sclerosing Hodgkin's lymphoma and is treated with concurrent clozapine and systemic chemotherapy.

Heazlewoodite, Ni3S2: A Potent Catalyst for Oxygen Reduction to Water under Benign Conditions.

Electrodeposited thin films and nanoparticles of Ni3S2 are highly active, poison- and corrosion-resistant catalysts for oxygen reduction to water at neutral pH. In pH 7 phosphate buffer, Ni3S2 displays catalytic onset at 0.8 V versus the reversible hydrogen electrode, a Tafel slope of 109 mV decade(-1), and high faradaic efficiency for four-electron reduction of O2 to water.

Privileged phosphine-based metal-organic frameworks for broad-scope asymmetric catalysis.

A robust and porous Zr metal-organic framework (MOF) based on a BINAP-derived dicarboxylate linker, BINAP-MOF, was synthesized and post-synthetically metalated with Ru and Rh complexes to afford highly enantioselective catalysts for important organic transformations. The Rh-functionalized MOF is not only highly enantioselective (up to >99% ee) but also 3 times as active as the homogeneous control. XAFS studies revealed that the Ru-functionalized MOF contains Ru-BINAP precatalysts with the same coordination environment as the homogeneous Ru complex.

Community treatment orders: implications of the drafting of the Mental Health Act 2007 for emergency detention of community patients.

Since the introduction of Community Treatment Orders by the Mental Health Act 2007, their use has increased year on year. Clinical experience has, however, demonstrated a weakness in the drafting of the Act, particularly in respect of patients who may be admitted informally for treatment of their mental health while also on a Community Treatment Order and then require detention under the terms of the Mental Health Act 2007. This paper describes these potential problems, particularly with regard to the inability to detain a Community Patient using sections 4 or 5 of the MHA 2007.

Executive functioning and the metabolic syndrome: a project FRONTIER study.

Decrements in cognitive functioning have been linked to the metabolic syndrome (MetS), a risk factor for cardiovascular disease defined by the presence of three of the following: elevated blood pressure, increased waist circumference, elevated blood glucose, elevated triglycerides, and low high-density lipoprotein cholesterol. We examined the relationship between four measures of executive functioning (EF) and MetS as diagnosed by National Heart, Lung, and Blood Institute-American Heart Association criteria. MetS was examined in a rural population of 395 persons with a mean age of 61.

Chiral metal-organic frameworks with tunable open channels as single-site asymmetric cyclopropanation catalysts.

A pair of interpenetrated and non-interpenetrated chiral metal-organic frameworks with the same catalytic sites but different open channel sizes catalysed asymmetric cyclopropanation of substituted terminal alkenes with excellent diastereoselectivities (up to 9.6) and enantioselectivities (up to >99%).

Autocatalytic O2 cleavage by an OCO3 trianionic pincer Cr(III) complex: isolation and characterization of the autocatalytic intermediate [Cr(IV)]2(μ-O) dimer.

Synthetic and kinetic experiments designed to probe the mechanism of O(2) activation by the trianionic pincer chromium(III) complex [(t)BuOCO]Cr(III)(THF)(3) (1) (where (t)BuOCO = [2,6-((t)BuC(6)H(3)O)(2)C(6)H(3)](3-), THF = tetrahydrofuran) are described. Whereas analogous porphyrin and corrole oxidation catalysts can become inactive toward O(2) activation upon dimerization (forming a μ-oxo species) or product inhibition, complex 1 becomes more active toward O(2) activation when dimerized. The product from O(2) activation, [(t)BuOCO]Cr(V)(O)(THF) (2), catalyzes the oxidation of 1 via formation of the μ-O dimer {[(t)BuOCO]Cr(IV)(THF)}(2)(μ-O) (3).

Luria's three-step test: what is it and what does it tell us?

Background: The purpose of this study is to determine if the three-step Luria test is useful for differentiating between cognitive disorders.

Methods: A retrospective record review of performance on the three-step Luria test was conducted on 383 participants from a university-based dementia clinic. The participants ranged in their diagnosis from frontotemporal dementia (FTD; n = 43), Alzheimer disease (AD; n = 153), mild cognitive impairment (MCI; n = 56), and normal controls (NC; n = 131).

Isoreticular chiral metal-organic frameworks for asymmetric alkene epoxidation: tuning catalytic activity by controlling framework catenation and varying open channel sizes.

A family of isoreticular chiral metal-organic frameworks (CMOFs) of the primitive cubic network topology was constructed from [Zn(4)(μ(4)-O)(O(2)CR)(6)] secondary building units and systematically elongated dicarboxylate struts that are derived from chiral Mn-Salen catalytic subunits. CMOFs 1-5 were synthesized by directly incorporating three different chiral Mn-Salen struts into the frameworks under solvothermal conditions, and they were characterized by a variety of methods, including single-crystal X-ray diffraction, PXRD, TGA, and (1)H NMR. Although the CMOFs 1 vs 2 and CMOFs 3 vs 4 pairs were constructed from the same building blocks, they exhibit two-fold interpenetrated or non-interpenetrated structures, respectively, depending on the steric sizes of the solvents that were used to grow the MOF crystals.

A series of isoreticular chiral metal-organic frameworks as a tunable platform for asymmetric catalysis.

Metal-organic frameworks, built by bridging metal ions with organic linkers, represent a new class of porous hybrid materials with attractive tunability in compositions, structures and functions. In particular, the mild conditions typically employed for their synthesis allow for the functionalization of their building blocks, and thus the rational design of novel materials. Here we demonstrate the systematic design of eight mesoporous chiral metal-organic frameworks, with the framework formula [LCu2(solvent)2] (where L is a chiral tetracarboxylate ligand derived from 1,1'-bi-2-naphthol), that have the same structures but channels of different sizes.

Executive functioning mediates the link between other neuropsychological domains and daily functioning: a Project FRONTIER study.

Background: The purpose of this study was to examine the mediating impact of executive functioning on the link between other neuropsychological domain scores and informant-based rating of functional status.

Methods: Data on 181 participants were analyzed from an ongoing epidemiological study of rural health, Project FRONTIER (mean age = 64.6 ± 13.

Catalytic aerobic oxidation by a trianionic pincer Cr(III)/Cr(V) couple.

Aerobic oxidation that incorporates both O atoms into a substrate (PPh(3)) is achieved by employing a Cr(III)/Cr(V)[triple bond]O catalytic couple. A terphenyl trianionic pincer ligand stabilizes a high oxidation state Cr(V)[triple bond]O complex, and both the reduced (Cr(III), IR/X-ray) and oxidized (Cr(V)[triple bond]O, electron paramagnetic resonance/IR/X-ray) participants in the catalytic cycle are characterized.

[Air microflora of university cafeteria].

The numbers of aerobic mesophilic bacteria, yeasts and moulds were obtained by sedimentation method. The investigation included six areas, which have been separated on the ground of their function: 1. washing and peeling of potatoes and vegetables, 2.

[The appearance of the thermophilic actinomycetes in dairy products].

Research covered testing of 30 samples of the following milk products: cream, sweet cream, fat cottage cheese, semi-fat cottage cheese, low-fat cottage cheese, homogenized cheese and butter. The presence of thermophilic ray fungi was confirmed in all examinated samples of tested products. In particular milk derivates the following levels of contaminations were found: cottage cheese--27.

[The evaluation of thermophilic fungi in raw coffee beans].

The purpose of the study was the attempt of the isolation of the thermophilic fungi from raw coffee beans. The material constituted of 24 coffee beans samples came from 12 countries. The isolation and the identification of the thermophilic fungi was conducted according to Biłaj [2], Biłaj and Zacharczenko [3].

[Microbiologic evaluation of instant soup concentrates].

The microbiological condition of instant soup powders purchased in retail network has been assessed. The study included 37 instant soups (8 types) manufactured by four Polish companies. The microbiological quality of a majority of soup powders fulfilled the requirements of the standard.