Hierarchically Porous Nitrogen-Doped Graphene–NiCo₂O₄ Hybrid Paper as an Advanced Electrocatalytic Water-Splitting Material

In this work, we report a three-dimensional (3D) oxygen evolution reaction (OER) catalyst with hierarchical pores for water splitting. The remarkable features of well-developed in- and out-of-plane pores, 3D conductive networks, and N-doping have greatly promoted the transport in electrodes and assured high catalytic efficiency. The 3D hybrid paper of N-doped graphene–NiCo₂O₄ has shown a remarkable OER catalytic activity that was comparable to that of previously reported noble metal catalysts (IrO₂). The catalytic process occurred with favorable kinetics and strong durability. The dual-active-site mechanism is responsible for the excellent performance of the hybrid catalyst; that is, the edges of NiCo₂O₄ and the N (O)–metal (Ni or Co) bonds are both active sites. This study affords a new strategy to achieve optimal performance in 3D catalysts, which may be extended to the preparation of other 3D hybrid materials for a broad range of technological applications

Highly Transparent and Hazy Cellulose Nanopaper Simultaneously with a Self-Cleaning Superhydrophobic Surface

Wood-derived sustainable materials like cellulose fibers have received increased attention for replacing nonrenewable substrates in emerging high-tech applications. Herein, for the first time, we fabricated a superhydrophobic (static contact angle = 159.6°, sliding angle = 5.8°), highly transparent (90.2%) and hazy (46.5%) nanopaper made of TEMPO-oxidized cellulose nanofibrils (TOCNF) and polysiloxanes. The original TOCNF nanopaper endowed excellent optical and mechanical properties; the constructed pearl-necklace-like polysiloxanes fibers on the nanopaper surface by further silanization significantly improved water-repellency (70.7% for static contact angle) and toughness (118.7%) of the TOCNF nanopaper. Our proposed novel nanopaper that simultaneously achieved light-management and self-cleaning capabilities not only led to an enhancement (10.43%) in the overall energy conversion efficiency of the solar cell by simply coating but also recovered most of the photovoltaic performance losses due to dust accumulation by a self-cleaning process, indicating its potential application in solar cells. This study on cellulose-based multifunctional substrates provided new insights into the future development of sustainable functional devices

Highly Transparent and Hazy Cellulose Nanopaper Simultaneously with a Self-Cleaning Superhydrophobic Surface

Wood-derived sustainable materials like cellulose fibers have received increased attention for replacing nonrenewable substrates in emerging high-tech applications. Herein, for the first time, we fabricated a superhydrophobic (static contact angle = 159.6°, sliding angle = 5.8°), highly transparent (90.2%) and hazy (46.5%) nanopaper made of TEMPO-oxidized cellulose nanofibrils (TOCNF) and polysiloxanes. The original TOCNF nanopaper endowed excellent optical and mechanical properties; the constructed pearl-necklace-like polysiloxanes fibers on the nanopaper surface by further silanization significantly improved water-repellency (70.7% for static contact angle) and toughness (118.7%) of the TOCNF nanopaper. Our proposed novel nanopaper that simultaneously achieved light-management and self-cleaning capabilities not only led to an enhancement (10.43%) in the overall energy conversion efficiency of the solar cell by simply coating but also recovered most of the photovoltaic performance losses due to dust accumulation by a self-cleaning process, indicating its potential application in solar cells. This study on cellulose-based multifunctional substrates provided new insights into the future development of sustainable functional devices

Supplemental_tables - Thirty-Day and 5-Year Readmissions following First Psychiatric Hospitalization: A System-Level Study of Ontario’s Psychiatric Care

<p>Supplemental_tables for Thirty-Day and 5-Year Readmissions following First Psychiatric Hospitalization: A System-Level Study of Ontario’s Psychiatric Care by Sheng Chen, April Collins and Sean A. Kidd in The Canadian Journal of Psychiatry</p

Thermal denaturation of BLA and its mutants in the presence of 10 mM Ca²⁺ at pH 5.5 at 95°C.

<p>The data represent the average of three independent measurements. The error bars represent the standard deviation.</p

Effects of pH and temperature on the activities of BLA and its mutants.

<p><b>(A) Optimal temperatures of BLA and its mutants.</b> Activities were measured in 50 mM phosphate buffer (pH 6.0) at 70 to 90°C for 5 min. The activity of BLA at 85°C was defined as 100%. <b>(B) Optimal pH values of BLA and its mutants.</b> Assays were carried at 70°C for 5 min in buffers of various pH. The highest activity of enzyme at each pH was defined as 100%. The activities are expressed as percentages. The data represent the average of three independent measurements. The error bars represent the standard deviation.</p

Preparation of Trifluorostyrenes via Palladium-Catalyzed Coupling of Arylboronic Acids with Chloro- and Bromotrifluoroethylene

A highly efficient and cost-effective method for the preparation of α,β,β-trifluorostyrene (TFS) and its derivatives is described. The method required only 0.2 mol % of Pd­(dba)₂ and 0.4 mol % of P^<i>t</i>Bu₃ and occurred to full conversion within 2.0 h. With this method, a wide range of arylboronic acids were efficiently incorporated to generate α,β,β-trifluorostyrene derivatives

Oligonucleotide primers used for site-directed mutagenesis.

<p>Oligonucleotide primers used for site-directed mutagenesis.</p

LC/MS analysis of specific cleavage of FVP-B by LC/B.

<p>Mixture sample of FVP-B (8.4 µM) and LC/B (200 nM) from <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0114124#pone-0114124-g002" target="_blank">Figure 2</a> was analysed by LC/MS to detect the full length FVP-B (A), CT-product (B) and NT-product (C).</p

Kinetic parameters of wild-type and mutant BLA at pH 5.5 and 70°C.

<p>Kinetic parameters of wild-type and mutant BLA at pH 5.5 and 70°C.</p