Synthesis of PbCrO nanorods-TiCT MXene composites: A sensitive photoelectrochemical sensor for the detection of cysteine in human blood serum.

Background: l-cysteine plays an important role in protein synthesis, osmoregulation, detoxification, nervous system function, and antioxidant process. Low levels of cysteine are associated with various diseases like cardiovascular diseases, ischemic stroke, neurological disorders, diabetes, cancer like lung and colorectal cancer, renal dysfunction-linked conditions, and vitiligo. Therefore, it is of great significance to develop a rapid and accurate method for the determination of cysteine concentration.

Transition Metal-Coordinated Polymer Achieves Stable Seawater Oxidation over NiFe Layered Double Hydroxide.

Seawater electrolysis has emerged as a promising approach for the generation of hydrogen energy, but the production of deleterious chlorine derivatives (e.g., chloride and hypochlorite) presents a significant challenge due to the severe corrosion at the anode.

New strategy for the utilization of invasive species: A tert-butylhydroquinone electrochemical platform based on Solidago canadensis L.

Tert-butylhydroquinone (TBHQ) is a widely used synthetic phenolic antioxidant found in edible oils and other fried foods. Nevertheless, the excess use of TBHQ can reduce food quality and impact public health. In this paper, we reported the synthesis of a nanocomposite consisting of carbon and nitrogen co-doped nickel oxide (NiO-N/C-700), which was used to modify a pencil graphite electrode for the sensitive detection of TBHQ.

Assessing the prevalence of human enteric viruses in hospital wastewater to evaluate the effectiveness of wastewater treatment systems.

In this experiment, we employed Real-time PCR(RT-PCR) and metagenomic Next-Generation Sequencing (mNGS) techniques to detect the presence of Norovirus, Rotavirus Group A, Adenovirus Group F, and Astrovirus in untreated sewage from three major hospitals. A comparison with clinical lab test outcomes revealed Norovirus as having the highest infection rate, followed by Adenovirus Group F and Rotavirus Group A. Despite not testing for Astrovirus in clinical labs, its sewage detection rate was surpassed only by Norovirus, suggesting a potentially high clinical infection rate.

Emerging -positive in Chinese pediatric infections.

Non-typhoidal (NTS) is a common zoonotic foodborne pathogen, whose rising antimicrobial resistance has been an urgent threat to global public health. Here, we reported two carbapenem-resistant (CRSE) strains (NBFE-049 and NBFE-164) carrying the genes, which were recovered from two Chinese children, belonged to serovar Typhimurium (. Typhimurium) monophasic variant (.

A Calculation Method of Bearing Balls Rotational Vectors Based on Binocular Vision Three-Dimensional Coordinates Measurement.

The rotational speed vectors of the bearing balls affect their service life and running performance. Observing the actual rotational speed of the ball is a prerequisite for revealing its true motion law and conducting sliding behavior simulation analysis. To address the need for accuracy and real-time measurement of spin angular velocity, which is also under high-frequency and high-speed ball motion conditions, a new measurement method of ball rotation vectors based on a binocular vision system is proposed.

Unusual defect properties of the one-dimensional photovoltaic semiconductor selenium.

Defect tolerance is crucial in photovoltaic absorbers. Here we report that trigonal selenium (t-Se) exhibits a perovskite-like antibonding valence band maximum arising from Se p-p coupling. This results in the shallow nature of dominant Se vacancy defects.

Lanthanide-Like Contraction Enables the Fabrication of High-Purity Selenium Films for Efficient Indoor Photovoltaics.

The lanthanide contraction involves a reduction in atomic radius among f-block elements below the expected level. A similar contraction is observed in group-16 elements. The atomic radius of Se (117 pm) is slightly larger than that of S (104 pm) arising from the presence of d electrons, compared to the significant increase in atomic radius from O (73 pm) to S.

A systematic review on electrochemical sensors for the detection of acetaminophen.

Considerable progress has been made in the electrochemical determination of acetaminophen (AP) over the past few decades. Nanomaterials or enzymes as electrode modifiers greatly improve the performance of AP electrochemical sensors. This review focuses on the development potential, detection principles and techniques for the electrochemical analysis of AP.

Cation vacancy modulated CuP-CoP heterostructure electrocatalyst for boosting hydrogen evolution at high current densities and coupling Zn-HO battery.

Exploiting highly efficient, cost-effective and stable electrocatalysts is key to decreasing hydrogen evolution reaction (HER) kinetics energy barrier. Herein, the alkaline HER kinetics energy barrier can greatly reduce by the joint strategies of the cation vacancy and heterostructure engineering, which is seldom explored and remains ambiguous. In this study, an efficient and stable copper foam-supported CuP-CoP heterostructure electrocatalyst with cation vacancy defects (defined as CuP-CoP-V/CF) was designed for HER via the successive coprecipitation, electrodeposition, alkali etching and phosphorization treatments.

SE-FSCNet: full-scale connection network for single-shot phase demodulation.

The accuracy of phase demodulation has significant impact on the accuracy of fringe projection 3D measurement. Currently, researches based on deep learning methods for extracting wrapped phase mostly use U-Net as the subject of network. The connection method between its hierarchies has certain shortcomings in global information transmission, which hinders the improvement of wrapped phase prediction accuracy.

Genomic investigation and nationwide tracking of pediatric invasive nontyphoidal in China.

Invasive nontyphoidal (iNTS) causes significant concern with ~15% morbidity, affecting populations mainly in African countries. However, iNTS infections among the Chinese pediatric population remain largely unknown. Here, we conducted a genomic investigation to study pediatric iNTS infections in a Chinese hospital.

PaCS-Toolkit: Optimized Software Utilities for Parallel Cascade Selection Molecular Dynamics (PaCS-MD) Simulations and Subsequent Analyses.

Parallel cascade selection molecular dynamics (PaCS-MD) is an enhanced conformational sampling method conducted as a "repetition of time leaps in parallel worlds", comprising cycles of multiple molecular dynamics (MD) simulations performed in parallel and selection of the initial structures of MDs for the next cycle. We developed PaCS-Toolkit, an optimized software utility enabling the use of different MD software and trajectory analysis tools to facilitate the execution of the PaCS-MD simulation and analyze the obtained trajectories, including the preparation for the subsequent construction of the Markov state model. PaCS-Toolkit is coded with Python, is compatible with various computing environments, and allows for easy customization by editing the configuration file and specifying the MD software and analysis tools to be used.

A Coupled Calibration Method for Dual Cameras-Projector System with Sub-Pixel Accuracy Feature Extraction.

Binocular structured light systems are widely used in 3D measurements. In the condition of complex and local highly reflective scenes, to obtain more 3D information, binocular systems are usually divided into two pairs of devices, each having a Single Camera and a Projector (SCP). In this case, the binocular system can be seen as Dual Cameras-Projector (DCP) system.

Sustainable Recycling of Selenium-Based Optoelectronic Devices.

Selenium (Se), the world's oldest optoelectronic material, has been widely applied in various optoelectronic devices such as commercial X-ray flat-panel detectors and photovoltaics. However, despite the rare and widely-dispersed nature of Se element, a sustainable recycling of Se and other valuable materials from spent Se-based devices has not been developed so far. Here a sustainable strategy is reported that makes use of the significantly higher vapor pressure of volatile Se compared to other functional layers to recycle all of them from end-of-life Se-based devices through a closed-space evaporation process, utilizing Se photovoltaic devices as a case study.

Structure of Amorphous Selenium: Small Ring, Big Controversy.

Selenium (Se) discovered in 1817 belongs to the family of chalcogens. Surprisingly, despite the long history of over two centuries and the chemical simplicity of Se, the structure of amorphous Se (a-Se) remains controversial to date regarding the dominance of chains versus rings. Here, we find that vapor-deposited a-Se is composed of disordered rings rather than chains in melt-quenched a-Se.

Synthesis of uniformly dispersed FeTiO nanodisks: a sensitive photoelectrochemical sensor for glucose monitoring in human blood serum.

A novel photoelectrochemical (PEC) sensor was constructed, using FeTiO nanodisks under visible-light irradiation, for the determination of glucose in human blood serum. The uniformly dispersed FeTiO nanodisks were synthesized for the first time by an ion exchange method and subsequent heat treatment. As excellent catalysts, the FeTiO nanodisks can directly catalyze the oxidation of glucose to produce current in the absence of glucose oxidase.

A polyaniline functionalized NiFeP nanosheet array-based electrochemical immunosensor using Au/CuO nanocubes as a signal amplifier for the detection of SARS-CoV-2 nucleocapsid protein.

Coronavirus disease 2019 (COVID-19) is an infectious disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which emerged as a novel pathogen in 2019. The virus is responsible for a severe acute respiratory syndrome outbreak, affecting the respiratory system of infected individuals. COVID-19 is a super amplifier of basic diseases, and the disease with basic diseases is often more serious.

A SERS Biosensor Based on Functionalized Au-SiNCA Integrated with a Dual Signal Amplification Strategy for Sensitive Detection of Telomerase Activity During EMT in Laryngeal Carcinoma.

Purpose: This paper aims to construct a surface-enhanced Raman spectroscopy (SERS) biosensor based on functionalized Au-Si nanocone arrays (Au-SiNCA) using a dual signal amplification strategy (SDA-CHA) to evaluate telomerase activity during epithelial-mesenchymal transition (EMT) in laryngeal carcinoma (LC).

Methods: A SERS biosensor based on functionalized Au-SiNCA was designed with an integrated dual-signal amplification strategy to achieve ultrasensitive detection of telomerase activity during EMT in LC patients.

Results: Labeled probes (Au-AgNRs@4-MBA@H) and capture substrates (Au-SiNCA@H) were prepared by modifying hairpin DNA and Raman signal molecules.

A Study of the Mechanisms and Characteristics of Fluorescence Enhancement for the Detection of Formononetin and Ononin.

In this work, the origins for the spectral difference between two isoflavones, formononetin (F) and ononin (FG), are revealed via a comparison study of the fluorescence molecular structure. The fluorescence enhancement of FG in hot alkaline conditions is reported for the first time. For F, there is almost no fluorescence under acidic conditions, but when the pH is >4.

Indoor photovoltaics awaken the world's first solar cells.

Selenium (Se) solar cells were the world's first solid-state photovoltaics reported in 1883, opening the modern photovoltaics. However, its wide bandgap (~1.9 eV) limits sunlight harvesting.