Screening and identification of lactic acid bacteria with α-glucosidase inhibiting activity.

In this study, lactic acid bacteria were isolated from traditional fermented foods in Guizhou. The fermentation supernatant and cell disruption extract were used to screen lactic acid bacteria with α-glucosidase inhibitory activity, and the active lactic acid bacteria strains with potential hypoglycemic effect were screened. The results showed that 10 strains were screened from 27 strains of lactic acid bacteria with α-glucosidase inhibitory activity, of which 5 strains had good acid and bile salt tolerance.

Seamless optical cloud computing across edge-metro network for generative AI.

The rapid advancement of generative artificial intelligence (AI) in recent years has profoundly reshaped modern lifestyles, necessitating a revolutionary architecture to support the growing demands for computational power. Cloud computing has become the driving force behind this transformation. However, it consumes significant power and faces computation security risks due to the reliance on extensive data centers and servers in the cloud.

Full-photonics up- and downconversions for W-band 16-QAM signal wireless delivery over 30.4 km with advanced equalizations.

We have experimentally demonstrated a communication system with an ultra-long sea surface wireless distance of 30.4 km and high-speed 16-quadrature amplitude modulation (16-QAM) data transmission at the W-band based on full-photonics up- and downconversion technology. Utilizing a frequency- and phase-locked optical two-tone generator, the transceiver ensures a stable millimeter-wave (mmW) signal at 76.

Giant room-temperature terahertz photothermoelectric response mediated by hot carriers at the metal-semimetal interfaces.

The hot-carrier photothermoelectric (PTE) effect in two-dimensional materials can be used to develop room-temperature, fast, and sensitive detectors for microwave, terahertz, and far-infrared radiations. Here, we present a van der Waals semimetal PtSe terahertz detector and find a giant terahertz PTE response mediated by hot carriers at the metal-PtSe interfaces. The detector demonstrates an excellent zero-bias responsivity of 0.

Edge-guided inverse design of digital metamaterial-based mode multiplexers for high-capacity multi-dimensional optical interconnect.

The escalating demands of compute-intensive applications urgently necessitate the adoption of optical interconnect technologies to overcome bottlenecks in scaling computing systems. This requires fully exploiting the inherent parallelism of light across scalable dimensions for data loading. Here we experimentally demonstrate a synergy of wavelength- and mode- multiplexing combined with high-order modulation formats to achieve multi-tens-of-terabits-per-second optical interconnects using foundry-compatible silicon photonic circuits.

Phytic Acid Delays the Senescence of Fruit by Regulating Antioxidant Capacity and the Ascorbate-Glutathione Cycle.

fruit has a short postharvest shelf life, with rapid declines in quality and antioxidant capacity. This research assessed how phytic acid affects the antioxidant capacity and quality of fruit while in the postharvest storage period and reveals its potential mechanism of action. The findings suggested that phytic acid treatment inhibits the production of malondialdehyde (MDA) and enhances the activities and expressions of glutathione peroxidase (GPX), peroxidase (POD), catalase (CAT), and superoxide dismutase (SOD) while decreasing the generation of superoxide anions (O) and hydrogen peroxide (HO).

Corrosion of carbon steel by Pseudomonas stutzeri CQ-Z5 in simulated oilfield water.

Carbon steel, an important infrastructure material in the petroleum industry, experiences serious damage due to Microbially Influenced Corrosion (MIC) with untold economic impact. Pseudomonas stutzeri CQ-Z5 with solid biofilm formation and organic acid-producing ability was isolated from Changqing oilfield produced water. The corrosion behavior and mechanism of 20 carbon steel by P.

Melatonin Maintains Postharvest Quality in Fresh Tuber by Regulating Antioxidant Ability and Phenylpropanoid and Energy Metabolism During Storage.

Melatonin treatment has been reported to effectively preserve and improve the postharvest quality of fruits and vegetables during storage. This research focused on examining the significance of melatonin on maintaining the quality of fresh tubers throughout the storage period. The findings demonstrated that melatonin application effectively reduced the deterioration rate and inhibited the rise in respiratory rate, malondialdehyde content, and weight loss, while slowing down the decline in soluble solid content.

Effects of ultrasonic degradation on physicochemical and antioxidant properties of Gleditsia sinensis seed polysaccharides.

In this study, two degraded polysaccharides from Gleditsia sinensis seed were obtained under ultrasonic power treatments of 300 and 450 W. The physicochemical properties, structural characteristics, and antioxidant activities of the degraded and undegraded polysaccharides were studied and compared. Ion exchange chromatography and methylation analysis showed that the polysaccharides had similar basic structural features and were composed of the same monosaccharide units before and after degradation, but the ultrasonic treatment increased the total monosaccharide content and changed the Mannose/Galactose value.

The Effect of Component Defects on the Performance of Perovskite Devices and the Low-Cost Preparation of High-Purity PbI.

The efficiency and reproducibility of perovskite solar cells (PSCs) are significantly influenced by the purity of lead iodide (PbI) in the raw materials used. Pb(OH)I has been identified as the primary impurity generated from PbI in water-based synthesis. Consequently, a comprehensive investigation into the impact of Pb(OH)I impurities on film and device performance is essential.

Photonic-assisted W-band flexible integrated sensing and communication system for fiber-wireless network based on CE-LFM-OFDM.

We have experimentally demonstrated a constant envelope linear frequency modulated orthogonal frequency division multiplexing (CE-LFM-OFDM) signal by employing an orthogonal frequency division multiplexing (OFDM) signal to phase modulate the linear frequency modulation (LFM) carrier. The experimental verification was conducted in the photonic-based integrated sensing and communication (ISAC) system working at 94.5 GHz.

Neural-network-based carrier-less amplitude phase modulated signal generation and end-to-end optimization for fiber-terahertz integrated communication system.

In fiber-terahertz integrated communication systems, nonlinear distortion and inter-symbol interference (ISI) will degrade transmission performance. Pre-compensation is an efficient method to handle the channel distortion as it can avoid noise boosting during channel compensation and reduce receiver side signal processing algorithmic complexity at user-end (UE) considering the asymmetric access scenario. In this paper, we propose and experimentally demonstrate a neural-network (NN)-based carrier-less amplitude phase (CAP) modulated signal generation and end-to-end optimization method for a fiber-terahertz integrated communication system.

FADngs: Federated Learning for Anomaly Detection.

With the increasing demand for data privacy, federated learning (FL) has gained popularity for various applications. Most existing FL works focus on the classification task, overlooking those scenarios where anomaly detection may also require privacy-preserving. Traditional anomaly detection algorithms cannot be directly applied to the FL setting due to false and missing detection issues.

Construction of core-shell CoSe/ZnInS heterostructures for efficient visible-light-driven photocatalytic hydrogen evolution.

The use of photocatalysts based on semiconductor heterostructures for hydrogen evolution is a prospective tactic for converting solar energy. Herein, visible-light-responsive three-dimensional core-shell CoSe/ZnInS heterostructures were successfully fabricated growth of ZnInS ultrathin nanosheets on spherical CoSe. Without any noble metal co-catalysts, the as-prepared CoSe/ZnInS composite achieved attractive photocatalytic hydrogen evolution activity under visible light illumination.

Melatonin Treatment Maintains the Quality of Fresh-Cut under Low-Temperature Conditions by Regulating Reactive Oxygen Species Metabolism and Phenylpropanoid Pathway.

The application of melatonin (MT) has been shown to improve the quality during the storage of fruits and vegetables. The primary objective of this study is to investigate the effects of MT on the quality of fresh-cut during low-temperature (4 °C) storage. The results indicated that MT treatment not only suppressed the respiratory rate and malondialdehyde content but also slowed down the decline in total acidity and total soluble solids, effectively inhibiting microbial growth and enhancing the product safety of fresh-cut .

Deep-learning-based multi-user framework for end-to-end fiber-MMW communications.

Fiber-wireless integration has been widely studied as a key technology to support radio access networks in sixth-generation wireless communication, empowered by artificial intelligence. In this study, we propose and demonstrate a deep-learning-based end-to-end (E2E) multi-user communication framework for a fiber-mmWave (MMW) integrated system, where artificial neural networks (ANN) are trained and optimized as transmitters, ANN-based channel models (ACM), and receivers. By connecting the computation graphs of multiple transmitters and receivers, we jointly optimize the transmission of multiple users in the E2E framework to support multi-user access in one fiber-MMW channel.

Demonstration of photonics-based flexible integration of sensing and communication with adaptive waveforms for a W-band fiber-wireless integrated network.

The integration of sensing and communication (ISAC) in millimeter-waves (MMW) will play an important role in future 6G applications. Photonics-based radar sensing and communication systems have the advantages of high bandwidth in terms of high-resolution sensing and high-speed data transmission and can be inherently integrated with fiber-optic networks. To support flexible application scenarios, in this paper, we proposed and experimentally demonstrated an MMW photonics-based flexible ISAC system with adaptive signal waveforms for a W-band fiber-wireless integrated network.

Formulation and Clients' Agency in Cognitive Behavioral Therapy.

The experience of loss of agency is one of the reasons for clients to go for psychotherapy. Enhancing clients' agency has been considered a fundamental factor for successful treatment in psychiatry and psychotherapy, yet few studies have investigated the interactional realization of how therapists do this in authentic psychotherapeutic encounters. Drawing on audio-recorded talk-in-interaction between clients and psychotherapists in cognitive behavioral therapy (CBT) encounters at a mental health center in China, this paper uses the method of conversation analysis to demonstrate how therapists ascribe agency positions to clients by issuing formulations of what the clients have just said.

An Experimental and Theoretical Study of Impact of Device Parameters on Performance of AlN/Sapphire-Based SAW Temperature Sensors.

The impact of device parameters, including AlN film thickness (), number of interdigital transducers (), and acoustic propagation direction, on the performance of -plane AlN/sapphire-based SAW temperature sensors with an acoustic wavelength () of 8 μm, was investigated. The results showed that resonant frequency () decreased linearly, the quality factor () decreased and the electromechanical coupling coefficient (Kt2) increased for all the sensors with temperature increasing from -50 to 250 °C. The temperature coefficients of frequency (TCFs) of sensors on AlN films with thicknesses of 0.

Benzothiazole Treatment Regulates the Reactive Oxygen Species Metabolism and Phenylpropanoid Pathway of Fruit to Delay Senescence During Low Temperature Storage.

fruit were used as research objects to study the effects of different concentrations of benzothiazole (BTH) treatment on quality parameters, reactive oxygen species (ROS) metabolism, and the phenylpropanoid pathway during storage at 4°C for 14days. Results showed that BTH effectively delayed senescence with lower decay incidence, weight loss, and lipid peroxidation level and maintained the quality with higher contents of total soluble solid (TSS) content, titratable acidity (TA) in fruit. Moreover, BTH increased hydrogen peroxide (HO) content, superoxide anion (O ) production rate, and the activities and expression of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione (GSH) reductase (GR), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), and peroxidase (POD), and the contents of GSH and ascorbic acid (AsA), but reduced the oxidized GSH (GSSG) content.

Developing an isotope dilution UHPLC-MS/MS method to quantify linezolid in human plasma: application to therapeutic drug monitoring.

To optimize clinical efficacy and reduce the drug-exposure-related toxicity of linezolid, whose concentrations show wide inter-variabilities, a simple and reliable quantitative assay for therapeutic drug monitoring is necessary. A UHPLC-MS/MS assay has been established for determination of linezolid in human plasma and fully validated according to the US FDA guidelines. After a simple, isotope-dilluted precipitation with methanol, the analytes were separated by a straightforward isocratic mode and the MS/MS was conducted under the ESI mode fitted with SRM.

BcXyl, a β-xylosidase Isolated from Flowers with Anthocyanin-β-glycosidase Activity.

flowers lose anthocyanins rapidly and are therefore well suited for the study of anthocyanin degradation mechanisms, which are unclear in planta. Here, we isolated an anthocyanin-β-glycosidase from petals. The MS/MS (Mass Spectrometry) peptide sequencing showed that the enzyme (72 kDa) was a β-xylosidase (BcXyl).

Method of the out-of-band rejection improvement of the AlN based surface acoustic wave filters.

AlN based surface acoustic wave (SAW) filters with an acoustic wavelength (λ) of 8 µm have been fabricated based on sputtered AlN films on sapphire. The acoustic velocity of 1-µm-AlN/Sapphire bilayer structure is 5536 m/s, 60% higher than that of LiNbO. The central frequency, insertion loss, out-of-band rejection, and bandwidth of fabricated AlN based two-port type SAW filters with a delay gap of λ are 692 MHz, 25.

Inhibitory effect of Shenqi Fuzheng injection combined with docetaxel on lung cancer cells.

This study investigated the anticancer effect of Shenqi Fuzheng (SQFZ) injection combined with docetaxel on lung cancer cell lines of A549 and Lewis lung cancer (LLC). SQFZ injection alone cannot inhibit the vitality of lung cancer cells, but the antitumor activity of SQFZ combined with docetaxel was significantly higher than that using docetaxel alone.

In Vivo Pharmacokinetics of Puerarin via Different Drug Administration Routes Based on Middle Cerebral Artery Occlusion Model.

Background And Objectives: Pueraria labata has traditionally been applied in the treatment of stroke in Chinese clinics. Puerarin is the key ingredient in it for brain protection effect. To find a superior administration route for puerarin in the treatment of ischemic cerebrovascular disease, the pharmacokinetics of puerarin based on the middle cerebral artery occlusion (MCAO) rat via different administration routes were studied and compared.