Plasmonic shaped AgX:Ag (X = Cl, Br) nanoparticles have been synthesized by a facile and versatile glycerol-mediated solution route. The as-prepared exhibit regular shapes, i.e., cube-tetrapod-like AgCl:Ag AgBr:Ag nanoplates. Compared with the pristine AgX, nanocomposites display stronger absorption in visible region due to surface plasmon resonance of silver nanoparticles. calculation bandgaps band positions indicates as-achieved can be used as class potential photocatalyst for reduction...

The efficient and complete extraction of uranium from aqueous solutions is crucial for safeguarding human health potential radiotoxicity chemotoxicity. Herein, an ultrathin 2D metal-organic framework (MOF) nanosheet with cavity structures was elaborately constructed, based on a calix[4]arene ligand. large molecular skeleton cup-shaped feature the enabled as-prepared MOFs layer separations, which can be readily delaminated into single-layer (∼1.25 nm) nanosheets. incorporation permanent to...

Heterostructured Ag@AgBr/AgCl nanocashews have been synthesized by an anion-exchange reaction between AgCl nanocubes and Br− ions followed photoreduction. Compared to polyhedral Ag@AgBr nanoparticles, the obtained nanostructures exhibit enhanced photocatalytic activity towards decomposition of organic pollutants, i.e., rhodamine-B (RhB). For example, only 2 min is taken completely decompose RhB molecules with assistance these novel heterostructured nanoparticles under visible light...

Three-dimensional (3D) TiO2 with an acanthosphere-like morphology composed of nanothorns has been used as a suitable support to fabricate visible-light-induced 3D AgI@TiO2 nanophotocatalyst. The structural characterization revealed that the size obtained nanocomposite was close pristine particles, where AgI nanoparticles were evenly dispersed on surfaces "thorns" TiO2. as-achieved nanophotocatalyst exhibited enhanced photocatalytic performance towards photodegradation organic pollutants,...

A novel strategy for a simultaneous multianalyte electrochemical immunoassay is proposed using thionine-labeled anti-AFP and ferrocene-labeled anti-CEA as tracers; each biorecognition event yielded distinct voltammetric peak, whose position size reflected the identify level of corresponding antigen.

Owing to far-ranging industrial applications and theoretical researches, tailored synthesis of well-defined nanocrystals has attracted substantial research interest. Herein, β-AgI nanoplates have been synthesized through a facile polyvinylpyrrolidone (PVP)-assisted-aqueous-solution (PAAS) method under mild conditions. The parametric studies on the effect ratio reactants, solvents surfactants were performed, revealing that molar I(-) Ag(+) 1.2 in deionized water presence appropriate PVP as...

Noninvasive measurement of blood pressure by optical methods receives considerable interest, but the complexity and difficulty adjusting parameters restrict applications. We develop a method for estimating systolic diastolic using single-point recording photoplethysmographic (PPG) signal. The estimation is data-driven, we use automated machine learning algorithms instead mathematical models. Combining supervised with discrete wavelet transform, insensitive to minor irregularities in PPG...

The intrinsic structural properties of branched long-chain fatty alcohols (BLFLs) in the range C12 to C18 make them more suitable as diesel fuel replacements and for other industrial applications than their straight-chain counterparts. While microbial production straight has been achieved, biosynthesis BLFLs never reported. In this work, we engineered four different biosynthetic pathways Escherichia coli produce BLFLs. We then employed a modular engineering approach optimize supply α-keto...

Abstract The efficient removal of radioactive uranium from aqueous solution is great significance for the safe and sustainable development nuclear power. An ultrathin 2D metal–organic framework (MOF) nanosheet with cavity structures was elaborately fabricated based on a calix[4]arene ligand. Incorporating permanent MOF can fully utilize its structural characteristics largely exposed surface area accessible adsorption sites in pollutant removal, achieving ultrafast kinetics, functionalized...

A systematic evaluation of enhancing photocatalysis via aliovalent cation doping is conducted. Cation In3+, being p-type-doped, was chosen to substitute the Sn site (Sn4+) in Li2SnO3, and photodegradation 2,4-dichlorophenol applied as a model reaction. Specifically, Li2Sn0.90In0.10O3 exhibited superior catalytic performance; efficiency reached about 100% within only 12 min. This far greater than that pure Li2SnO3 under identical conditions. Density functional theory calculations reveal...

Multiplex bioassays have drawn more and attention for the development of novel analytical techniques. Herein, we used photonic crystal (PC) surface enhanced Raman scattering (SERS) as two encoding elements in different modes dual multiplex bioassays. In practice, PC beads SERS nanotags act carriers labels, respectively, detection antigens a sandwich format. Except amplified capacity by modes, also demonstrated that fine stability, low background high sensitivity were realized quantitative...

A facile 2-dimensional coupling of AgBr nanosheets with graphene oxide (GO) sheet has been developed to fabricate an efficient dual-functional visible-light-responsive GO@AgBr nanophotocatalyst. Compared bare nanosheets, the as-obtained nanocomposite exhibits enhanced photocatalytic activity towards degradation rhodamine-B (RhB) and evolution H2 from aqueous-methanol solution. The RhB molecules can be decomposed completely within 4 min under visible light irradiation catalyst reused 10 times...

Responding to nitrogen status is essential for all living organisms. Bacteria have evolved various complex and exquisite regulatory systems control metabolism. However, natural systems, owing their complexity, often function only in original hosts do not respond properly when transferred another species. By harnessing the Lactococcus GlnRA system, we developed a genetically encoded, cross-species ammonium biosensor that displays dynamic range up 9-fold upon detection of ion. We demonstrated...

Branched-chain fatty acids (BCFAs) are important precursors for the production of advanced biofuels with improved cold-flow properties. Previous efforts in engineering type II acid synthase (FAS) BCFA suffered from low titers and/or co-production a large amount straight-chain (SCFAs), making it nearly impossible further conversion BCFAs to branched biofuels. Synthesis both SCFAs and requires FabH, only β-ketoacyl-(acyl-carrier-protein) Escherichia coli that catalyzes initial condensation...

Abstract BACKGROUND Citrus pulp (CP) is rich in pectin, and studies have shown that pectin possesses antioxidant, anti‐inflammatory, gut microbiota‐regulating properties. However, the application of CP aquafeed limited. In this study, effect dietary inclusion on intestinal health largemouth bass ( Micropterus salmoides ) was investigated. Juveniles similar size (6.95 ± 0.07 g) were fed isonitrogenous isoenergetic diets containing different levels (0%, 3%, 6%, 9%, 12%, or 15%) for 58 days....

Photoplethysmography (PPG) can be carried out through facial video recording by a smart phone camera in ambient light. The main challenge is to eliminate motion artifacts and noise. We describe real-time algorithm quantify the heart beat rate from captured of phone. extract green channel video. Then we normalize it use Kalman filter with particular structure This also enhances pulse component signal distorted Gaussian noise white After that employ band-pass FIR remove remaining artifacts....

The potential controlling silver catalysis for Ru(bpy)32+ electrochemiluminescence (ECL) signal at a special −0.4∼1.25 V was newly developed as the new ECL amplification strategy ultrasensitive protein detection. Firstly, wheat-like deposited (DpAg) particles were modified on bare glass carbon electrode (GCE) surface by cyclic voltammetry deposition to capture primary antibodies and then bind antigen analytes. Secondly, sandwich immunoreaction format, secondary conjugated with...

Photoplethysmogram (PPG) signals acquired by smartphone cameras are weaker than those dedicated pulse oximeters. Furthermore, the have lower sampling rates, notches in waveform and more severely affected baseline drift, leading to specific morphological characteristics. This paper introduces a new feature, inverted triangular area, address these The feature enables real-time adaptive detection using an algorithm of linear time complexity. It can also recognize it is inherently robust drift....