A Ratiometric Fluorescent Sensor for the Detection of Norfloxacin in Foods Based on ZIF-8 Core-Shell-Structured Molecularly Imprinted Encoded Microspheres.

The development of fluorescent sensors with high sensitivity and fast response times is attracting the interest of more and more researchers. Herein, dual-emission ratiometric molecularly imprinted fluorescent encoded microspheres were fabricated and applied for the fast detection of norfloxacin. Core-shell-structured imprinted polymers with ZIF-8 as the supporting core were obtained first and two quantum dots with green and red emission provided the fluorescent signal.

Graphitic Carbon Nitride Confers Bacterial Tolerance to Antibiotics in Wastewater Relating to ATP Depletion.

Graphitic carbon nitride (CN) is a kind of visible light-responsive photocatalyst that has been of great interest in wastewater treatment. However, its environmental impact and biological effect remains to be elucidated. This study investigated the effect of CN nanosheets on bacterial abundance and antibiotic tolerance in wastewater.

Spectral Fingerprinting of Tencha Processing: Optimising the Detection of Total Free Amino Acid Content in Processing Lines by Hyperspectral Analysis.

The quality and flavor of tea leaves are significantly influenced by chemical composition, with the content of free amino acids serving as a key indicator for assessing the quality of Tencha. Accurately and quickly measuring free amino acids during tea processing is crucial for monitoring and optimizing production processes. However, traditional chemical analysis methods are often time-consuming and costly, limiting their application in real-time quality control.

Prognostic prediction models for postoperative patients with stage I to III colorectal cancer based on machine learning.

Background: Colorectal cancer (CRC) is characterized by high heterogeneity, aggressiveness, and high morbidity and mortality rates. With machine learning (ML) algorithms, patient, tumor, and treatment features can be used to develop and validate models for predicting survival. In addition, important variables can be screened and different applications can be provided that could serve as vital references when making clinical decisions and potentially improving patient outcomes in clinical settings.

Prodigiosin hydrogel to promote healing of trauma-infected multidrug-resistant mice wounds.

Wound infections caused by Multidrug-resistant (MRSA) have been regarded as a challenging problem in clinic for the long time. In this study, based on the excellent antimicrobial effect of prodigiosin(PG) and the ability of hydrogel dressing in terms of tissue repair and regeneration, we prepared the PG hydrogel as a treatment for the wound infection induced by MRSA. Rheological tests indicated that PG hydrogel as a semi-solid gel had good mechanical properties.

Injectable and self-healing carboxymethyl chitosan/carboxymethyl cellulose/marine snail peptide hydrogel for infected wound healing.

Treatment of bacterial infected full-thickness wounds remains a great challenge in clinic. Herein, a HYP hydrogel was prepared using carboxymethyl chitosan, dialdehyde carboxymethyl cellulose, and marine snail peptide (Tyr-Ile-Ala-Glu-Asp-Ala-Glu-Arg) as starting materials. The marine snail peptide with good antioxidant activity could remove the reactive oxygen species in wound sites, thereby alleviating the excessive inflammatory response.

An AttSDNet model for multi-scale feature perception enhanced remote sensing classification of coastal salt-marsh wetlands.

Coastal salt-marsh wetlands have important ecological value, and play an important role in coastal blue carbon sink. However, under the influence of various external and natural factors, coastal wetland ecosystems worldwide have severely degraded, leading to biodiversity loss and ecological damage. Based on satellite remote sensing data and deep learning methods, it is an effective means to quickly monitor the spatial distribution of coastal wetlands, which is very important for the protection and restoration of coastal wetlands.

Electric field-induced alignment of Ag/Au nanowires for ultrasensitive in situ detection of Interleukin-6.

Interleukin-6 (IL-6) is a key parameter and critical role in cancer progression. However, for detection of IL-6 in colorectal cancer diagnosis, developing a sensitive biosensor is necessary and very important. In this paper, to enhance the sensitivity of IL-6 electrochemical biosensor, the electric field was used to orient arrangement of silver nanowires (AgNWs) to be free-standing AgNWs electrode.

Role of lignin removal on the properties of crude pulp fibers from corn stover via high-temperature formic acid pulping.

An effective removal of lignin could reduce the chromogenic groups of lignin in pulp. Herein, corn stover was pulped via the formic acid to investigate the effects of cooking time and temperature on the crude pulp properties. The strong hydrogen ion action of formic acid helped inhibiting both the re-polymerization of degraded lignin molecules and the subsequent adsorption on fiber.

Regenerable Molecularly Imprinted Polymer Biosensor for Electrochemical Detection of Nonelectroactive Branched-Chain Amino Acids in Human Sweat.

The significant challenge in achieving regeneration for conventional molecularly imprinted polymers (MIPs) restricts their promising application in continuous monitoring of biochemical molecules closely related to human health, especially nonelectroactive molecules. This is because they are either limited to a single use or require removal of imprinted templates through chemical washing steps, which is clearly impractical for sustainable monitoring. Here, a class of regenerable MIP biosensors, taking nonelectroactive branched-chain amino acids (BCAAs) as templates and methyldopa as a functional monomer, was engineered to achieve repeatable regeneration and target recognition.

A degradable polyimide aerogel with highly efficient solar-thermal-electric effect for oil absorption, deicing, and power generation.

Photothermal materials are considered as promising materials because they can convert clean solar energy into thermal and electrical energy. However, developing degradable photothermal materials with highly efficient solar-thermal-electric energy conversion performance remains a huge challenge. Here, a superhydrophobic bio-polyimide/carbon quantum dots aerogel (S-BioPI/CQDs) is synthesized.

Insights into multi-scale structural evolution and dielectric response of poly(methyl acrylate) under pre-strain: A simulation study.

The structural evolution of dielectric elastomer induced by pre-strain is a complex, multi-scale process that poses a significant challenge to a deep understanding of the effect of pre-strain. Through simulation results, we identify the variation in the dielectric constant and multi-scale (electronic structure, molecular chain conformation, and aggregation structure) response of poly(methyl acrylate). As the pre-strain increases, the dielectric constant initially rises (below 200% pre-strain) and then declines (above 200% pre-strain).

Automatic visual recognition for leaf disease based on enhanced attention mechanism.

Recognition methods have made significant strides across various domains, such as image classification, automatic segmentation, and autonomous driving. Efficient identification of leaf diseases through visual recognition is critical for mitigating economic losses. However, recognizing leaf diseases is challenging due to complex backgrounds and environmental factors.

Bio-based waterborne polyurethanes from castor oil, sorbitan monooleate and sodium lignosulfonate with ultraviolet resistance, photothermal effect, corrosion protection and degradation properties.

The advancement of bio-based materials derived from renewable resources provides a pivotal strategic approach to address the problems of environmental pollution and scarce fossil resources. In this study, a series of bio-based waterborne polyurethanes (WPUs) with enhanced UV resistance, photothermal effect and corrosion resistance were prepared by using sorbitan monooleate (SP) and castor oil (CO) as vegetable polyols together with the introduction of sodium lignosulfonate modified of diethanolamine (DML). The WPU coatings of only 100 μm thickness, exhibited UV blocking rate > 99 % between 200 and 320 nm.

Efficient tetracycline hydrochloride degradation via peroxymonosulfate activation by N doped coagulated sludge based biochar: Insights on the nonradical pathway.

Coagulation could effectively remove microplastics (MPs). However, MPs coagulated sludge was still a hazardous waste that is difficult to degrade. Nitrogen-doped carbon composite (N-PSMPC) was prepared by carbonizing MPs coagulated aluminum sludge (MP-CA) doped with cheap urea in this study.

Interfacial engineering of Co(OH)@CN composites: A study of p-n heterojunctions with enhanced xylose/xylan photoreforming and CO reduction performance.

The construction of p-n heterojunction is considered a prominent method for promoting efficient separation/migration of photoinduced carriers, thereby enhancing photocatalytic performance. Herein, a series of nanoflower spherical Co(OH)@CN-x p-n heterojunction photocatalysts were fabricated using a simplified one-step hydrothermal strategy. Notably, Co(OH)@CN-2 exhibited optimal performance, showcasing a carbon monoxide (CO) evolution rate of 46.

Carbonized wood loading sustainable tannin used as free-standing electrodes for assembling heavy metal-free supercapacitors.

The design of heavy metal-free thick supercapacitor electrodes with excellent energy storage performance through a novel and effective strategy represents an attractive yet challenging area of research. In this study, a sustainable redox-active tannic acid (TA) is loaded on the carbonized wood (CW) collector to construct a low-curvature, high-capacity, heavy metal-free supercapacitor electrode. The uniform loading of TA on the surface of the CW cell wall is achieved through the combined action of mutually stable hydrogen bonding and π-π interactions, which constructs a fast electron transport channel in the collector.

A New Methylbutyric Acid Derivative with Pro-angiogenesis Activity from the Mangrove Fungus Penicillium polonicum M-3.

A new methylbutyric acid derivative penianoic acid A (1), along with fifteen known compounds (2-16), was isolated and identified from the culture extract of Penicillium polonicum M-3 sourced from Malaysian mangrove root soil. Their structures were determined by detailed spectroscopic analysis of NMR and MS data and quantum chemical calculations of ECD and NMR (with DP4+ probability analysis). The isolated compounds were evaluated for pro-angiogenesis activity using zebrafish in vivo model.

Constructing robust and antioxidant polyurethane-lignin coatings with biodegradable properties for grass press paper films.

The practical applications of grass plastic mulch films are limited because their residues turn into microplastics and enter the food chain. This study solves this problem by preparing a degradable cellulose-lignin-waterborne polyurethane composite grass paper film. First, waterborne polyurethane prepared using a mild method was composited with lignin via an addition reaction and the formation of hydrogen bonding between the -OH groups of lignin and the -NCO and -OH groups of polyurethane.

Transglutaminase-triggered dual gradients of mechanical and biochemical cues self-assembling peptide hydrogel for guiding MC3T3-E1 cell behaviors.

The mechanical properties and bioactive motif densities of extracellular matrix materials play crucial roles in regulating cell behaviors, such as cell adhesion, migration, proliferation, and differentiation. However, current studies on cellular responses to ECM predominantly concentrated on polymer hydrogels featuring a single factor, such as the mechanical strength, the types of bioactive motifs, and the morphology of the polymers. This limited focus may overlook the complex interplay of multiple factors.

Heavy metal concentrations prediction of marine sediments by visible-near infrared spectroscopy based on attention mechanism.

Monitoring heavy metal concentrations in marine sediments is important for assessing marine environmental quality, protecting ecological health, and preventing human health risks. Visible-near infrared spectroscopy technology can overcome the shortcomings of traditional methods. Taking marine sediments from Jiaozhou Bay, Qingdao as an example, this paper collected visible-near infrared spectroscopy of the marine sediments and innovatively proposed a two-scale LSTM with attention mechanism method to predict heavy metal concentrations in marine sediments.

Spatiotemporally Resolved Approach for Profiling Ferroptosis-Associated Metabolic Vulnerabilities in Tumors Using Mass Spectrometry Imaging and Stable Isotope Tracing.

Ferroptosis, as an iron-dependent cell death mediated by lipid peroxidation, has sparked great interest in the tumor research community. Targeting ferroptosis has been proven to be a new therapeutic opportunity for inhibiting tumor growth. However, it is challenging to precisely characterize the metabolic pattern of ferroptosis in heterogeneous tumors and further identify ferroptosis-associated metabolic vulnerabilities for tumor treatment.