The second near-infrared (NIR-II, 1000-1700 nm) light-activated organic photothermal agent that synchronously enables satisfying NIR-II fluorescence imaging is highly warranted yet rather challenging on the basis of overwhelming nonradiative decay. Herein, such an agent, namely TPABT-TD, was tactfully designed and constructed via employing benzo[c]thiophene moiety as bulky electron donor/π-bridge tailoring peripheral molecular rotors. Benefitting from its high donor-acceptor strength finely...

Forest fires pose a severe threat to ecological environments and the safety of human lives property, making real-time forest fire monitoring crucial. This study addresses challenges in image object detection, including small targets, sparse smoke, difficulties feature extraction, by proposing TFNet, Transformer-based multi-scale fusion detection network. TFNet integrates several components: SRModule, CG-MSFF Encoder, Decoder Head, WIOU Loss. The SRModule employs multi-branch structure learn...

ABSTRACT Vehicles and electronics rely on detachable reusable hot‐melt adhesives, but they are hard to reach structural bonding strength date. In this work, a strategy reconciling cohesive energy adhesion force was developed overcome the trade‐off relation between bulk strength. Specifically, prepolymer of polytetrahydrofuran ether glycol (PTMEG) capped by isophorone diisocyanate (IPDI) deliberately extended different content 4‐aminophenyl disulfide (AD) 3,4‐dihydroxybenzaldehyde (DBD),...

ABSTRACT Rhizoma Atractylodes Macrocephala (RAM) is an important traditional Chinese medicinal herb that used for treatment of dyspepsia and anorexia. The active ingredients, atractylenolide I (AO‐I) III (AO‐III), were identified by direct‐injection ion trap‐mass spectrometry (IT‐MS) collecting MS n spectra. major fragment ions AO‐I AO‐III confirmed both in negative mode positive mode. possible main cleavage pathway was studied. determinations accomplished liquid chromatography (LC) with UV...

Supercritical fluid was used to extract volatile components from the rhizoma of Atractylode lancea (A. lancea). An orthogonal array design (OAD), L(9) (3)(4), employed as a chemometric method for optimization supercritical extraction (SFE) compounds herbal medicine. Four parameters, namely, pressure, temperature, dynamic time, and flow rate CO(2), were studied optimized by three-level OAD in which interactions between parameters neglected. These identified according their retention times...

Abstract The implementation of hot melt adhesives reaching structural adhesion with both impact resistance and detachability is prospective industry value but still remains challenging. In this work, 2‐amino‐4‐hydroxy‐6‐methylpyrimidine serving as chain extender end‐capping reagent due to its isomerism, was developed construct a supramolecular polyurethane‐derived adhesive. as‐synthesized PUM elastomers occurs obvious decrease molecular weight at 80°C compared room temperature, revealing the...

Abstract Structural adhesives that do not require heating are in high demand the automotive and electronics industries. However, it remains a challenge to develop robust rapidly achieve super adhesion near ambient temperature. Herein, room‐temperature curable, fast‐bonding, strong epoxy‐based structural adhesive was designed from perspective of cross‐scale structure, which lies threefold pivotal aspects: (i) branching topology glycerol carbonate‐capped polyurethane (PUGC) increases kinetics...

Forest fires pose a significant threat to forest resources and wildlife. To balance accuracy parameter efficiency in fire detection, this study proposes an improved model, Mcan-YOLO, based on YOLOv7. In the Neck section, asymptotic feature pyramid network (AFPN) was employed effectively capture multi-scale information, replacing traditional module. Additionally, content-aware reassembly of features (CARAFE) replaced conventional upsampling method, further reducing number parameters. The...

Abstract A simple and sensitive capillary gas chromatography-mass spectrometry (GC–MS) method for the simultaneous determination of atractylenolide I (AO-I) III (AO-III) in atractylodes macrocephala is described. AO-I AO-III were obtained by supercritical fluid extraction, imperatorin was used this as an internal standard quantification. MS detection performed SIM mode to increase sensitivity. Stability solutions, linear concentration range, accuracy, precision, LOD, LOQ, specificity...

The preparation of waterborne polyurethane based polymeric dyes (DWPU) with anthraquinone chromophores was monitored by using UV absorption spectroscopy for the first time.

Ketamine in subanesthetic dose added to butorphanol has been reported give superior pain control when used for intravenous patient-controlled analgesia (PCA) after surgery. However, this admixture is not available commercially and stability data applicable hospital practice are limited.The butorphanol-ketamine admixtures were prepared polyolefin bags stored the dark at 4°C, 25°C, or 37°C 15 days. The initial concentrations 50-150 microgram/ml 1-4 mg/ml ketamine, respectively. stabilities...

ABSTRACT A liquid chromatography–tandem mass spectrometry (LC–MS/MS) has been developed and validated to determine the concentration of armillarisin succinate ester in mouse plasma tissues, used for preclinical evaluation. Bavachin was employed as internal standard. Separation performed on a 3.5 µm Zorbax SB‐C 18 column (30 × 2.1 mm), with mobile phase consisting methanol aqueous 20 m ammonium acetate. Both analyte standard were determined using electrospray ionization MS data acquisition...

Abstract A rapid reversed-phase high-performance liquid chromatographic (RP-HPLC) method was established for simultaneous determination of senecionine, senlciphylline, and senecionine N-oxide in a famous traditional Chinese medicine, Gynura segetum, which has been commonly used hemostasis. The HPLC assay performed on Kromasil KR100-5 C18 column (25 cm × 4.6 mm, 5 µm) with mobile phase composed acetonitrile 0.2% phosphoric acid–triethylamine within 40 min. detection wavelength 220 nm. All the...

This study established high-performance liquid chromatography(HPLC) fingerprints of Chinese medicines derived from Apocynum venetum and Poacynum pictum in Xinjiang explored their composition differences with the combination content determination, similarity analysis, cluster analysis principal component analysis. The HPLC conditions included Phenomenex Kinetex C_(18) column(4.6 mm ×100 mm, 2.6 μm), acetonitrile-0.01% trifluoroacetic acid aqueous solution as mobile phase, gradient elution,...

A rapid and sensitive method for the identification quantification of prim-O-glucosylcimifugin (POG) in Saposhnikovia divaricata is described. The POG standard solution was directly infused into ion trap mass spectrometers (IT/MS) collecting MSn spectra. electrospray ionization (ESI) spectral fragmentation pathway proposed ESI-MSn behavior deduced detail. major product at m/z 307 belongs to dihydrofurochromone, which formed by loss glucose (162 Da), characteristic eliminations 18, 48, 72...