FeS nanoparticles on reduced graphene oxide: an efficient electrocatalyst for nitrate electroreduction to ammonia.

Electrocatalytic nitrate-to-ammonia conversion (NORR) represents a promising approach for achieving both sustainable NH synthesis and wastewater treatment. Herein, we first demonstrate the great feasibility of using pyrite FeS as an effective and durable NORR catalyst. The developed FeS nanoparticles supported on reduced graphene oxide (FeS/RGO) deliver the maximum NH-Faradaic efficiency of 83.

Significant Association of the Gene Polymorphism () and Opioid Use Disorder in Asian Populations, but not Caucasian Populations: A Meta-analysis.

Previous studies have reported on the association between the polymorphism in the () gene and opioid use disorder (OUD) with inconsistent outcomes. The goal of this study was to examine the correlation of the polymorphism and OUD using a meta-analysis approach. Six electronic databases, including PubMed, Web of Science, Cochrane Library, EMBASE, Wanfang and CNKI, were searched thoroughly for relevant studies on the association of the polymorphism and OUD up to September, 2021.

Identification of Mouse Claustral Neuron Types Based on Their Intrinsic Electrical Properties.

Although its dense connections with other brain areas suggests that the claustrum is involved in higher-order brain functions, little is known about the properties of claustrum neurons. Using whole-cell patch clamp recordings in acute brain slices of mice, we characterized the intrinsic electrical properties of more than 300 claustral neurons and used unsupervised clustering of these properties to define distinct cell types. Differences in intrinsic properties permitted separation of interneurons (INs) from projection neurons (PNs).

The role of altered brain structural connectivity in resilience, vulnerability, and disease expression to schizophrenia.

Background: Schizophrenia (SCZ) is a highly heritable disorder associated with brain connectivity changes. Although the mechanism of disease expression and vulnerability of SCZ have been reported by previous studies, the mechanism of resilience to SCZ based on the brain structural connectivity is poorly understood. The goal of the present study was to identify the structural brain connectivity related with the resilience to SCZ, which is defined here as the capacity to avoid or delay the onset of SCZ in unaffected siblings of SCZ probands.

On-line coupling of hydrophilic ionic liquids-based polymer monolith microextraction to capillary liquid chromatography with amperometric detection: An ultrasensitive residue analysis method for glycopeptide antibiotics.

A hydrophilic ionic liquids based polymer monolith microextraction (PMME) column (poly(ionic liquid-co-hydroxyethyl methacrylate-co-ethylene dimethacrylate); poly(IL-co-HEMA-co-EDMA)) was prepared for the first time in a capillary and utilized in PMME for the enrichment of glycopeptide antibiotics (GAs), followed by the online coupling analysis of capillary liquid chromatography with amperometric detection (cLC-AD). The prepared monolith exhibited large through pores and good storage stability, as well as a selective extraction machanism for GAs that was attributed to the hydrogen bonding, hydrophilic, electrostatic and π-π interactions between GAs and the imidazolium cations or hydroxyl groups on the surface of absorbent. Several experimental parameters, such as sample flow rate, composition of eluent and solvent desorption conditions, were examined to improve the extraction efficiency of PMME.

Multivariate systems of nonexpansive operator equations and iterative algorithms for solving them in uniformly convex and uniformly smooth Banach spaces with applications.

We prove some existence theorems for solutions of a certain system of multivariate nonexpansive operator equations and calculate the solutions by using the generalized Mann and Halpern iterative algorithms in uniformly convex and uniformly smooth Banach spaces. The results of this paper improve and extend the previously known ones in the literature.

A kind of system of multivariate variational inequalities and the existence theorem of solutions.

Let be a nonempty closed convex and bounded subset of a reflexive Banach space . Let [Formula: see text] be -variables monotone demi-continuous mappings from [Formula: see text] into . Then: (1) the system of multivariate variational inequalities [Formula: see text] has a solution [Formula: see text]; (2) the set of solutions of this system of multivariate variational inequalities is closed convex in [Formula: see text]; (3) if [Formula: see text] are also strictly monotone, this system of multivariate variational inequalities has a unique solution.

Remote Regulation of Membrane Channel Activity by Site-Specific Localization of Lanthanide-Doped Upconversion Nanocrystals.

The spatiotemporal regulation of light-gated ion channels is a powerful tool to study physiological pathways and develop personalized theranostic modalities. So far, most existing light-gated channels are limited by their action spectra in the ultraviolet (UV) or visible region. Simple and innovative strategies for the specific attachment of photoswitches on the cell surface without modifying or genetically encoding channel structures, and more importantly, that enable the remote activation of ion-channel functions within near-infrared (NIR) spectral window in living systems, remain a challenging concern.

ψ-Contraction and [Formula: see text]-contraction in Menger probabilistic metric space.

The purpose of this paper is to present the definition of [Formula: see text]-contractive mapping and to discuss the relation of [Formula: see text]-contractive mappings and [Formula: see text]-contractive mappings. Furthermore, the generalized [Formula: see text]-contraction mapping principle has been proved without the uniqueness condition. Meanwhile, the generalized [Formula: see text]-contraction mapping principle has been obtained by using an ingenious method.

Field-amplified sample injection in capillary electrophoresis with amperometric detection for the ultratrace analysis of diastereomeric ephedrine alkaloids.

A coupling method of field-amplified sample injection (FASI) CE with amperometric detection is developed for ultratrace analysis of ephedrine alkaloids stereoisomers. FASI was introduced by injecting electrokinetically the sample solution for 10 s into the capillary filled with highly conductive background electrolyte (BGE). The diastereomeric selectivity and the detection sensitivity were improved by using borate buffer of high ionic strength as BGE.

The complete mitochondrial genome of Yunnan black goat (Capra hircus).

Yunnan black goat (Capra hircus) is one of the famous native goat breed in China. In this study, the complete nucleotide sequence of Yunnan black goat mitochondrial genome was determined for the first time. Sequence analysis showed that the genome structure was in typical with other vertebra animals.

The complete mitochondrial genome of Sus cebifrons (Sus, Suidae).

In this work, we report the complete mitochondrial genome sequence of Sus cebifrons (Visayan warty pig). The total length of the mitogenome was 16,475 bp, and its overall base composition was estimated to be 35.0% for A, 25.

Next-generation transgenic mice for optogenetic analysis of neural circuits.

Here we characterize several new lines of transgenic mice useful for optogenetic analysis of brain circuit function. These mice express optogenetic probes, such as enhanced halorhodopsin or several different versions of channelrhodopsins, behind various neuron-specific promoters. These mice permit photoinhibition or photostimulation both in vitro and in vivo.

[Diffusion tensor imaging analyses of white matter in healthy siblings of schizophrenics].

Objective: To explore the diffusion tensor imaging (DTI) features of white matter in healthy siblings of schizophrenics.

Methods: Twenty healthy siblings of schizophrenics and 45 healthy controls without a family history of mental disorder. They responded to advertised recruitment during December 2009 and March 2012.

Chronic exposure to high fatty acids impedes receptor agonist-induced nitric oxide production and increments of cytosolic Ca2+ levels in endothelial cells.

Dyslipidemia is a common metabolic disorder in diabetes. Nitric oxide (NO) production from endothelium plays the primary role in endothelium-mediated vascular relaxation and other endothelial functions. Therefore, we investigated the effects of elevated free fatty acids (FFA) on the stimulation of NO production by phospholipase C (PLC)-activating receptor agonists (potent physiological endothelium-dependent vasodilators) and defined the possible alterations of signaling pathways implicated in this scenario.

Determination of endpoint of procedure for radix rehmanniae steamed based on ultraviolet spectrophotometry combination with continuous wavelet transform and kernel independent component analysis.

A method for determination of the endpoint of the procedure for radix rehmanniae steamed was proposed based on UV spectrophotometry combination with continuous wavelet transform and kernel independent component analysis (UV-CWT-KICA). In the proposed method, the raw UV spectra of the rehmanniae samples during steamed procedure were measured. The raw UV spectral data were firstly pretreated by CWT for elimination of the noise signal and enrichment of the spectral resolution, then the independent components (ICs) were estimated from the mixed CWT coefficient matrix.