As a non-destructive detection method, an electronic nose can be used to assess the freshness of meats by collecting and analyzing their odor information. Deep learning automatically extract features uncover potential patterns in data, minimizing influence subjective factors such as selecting artificially. A transfer-learning-based model was proposed for detect chicken breasts this study. First, 3D-printed system is collect data from breast samples stored at 4 °C 1–7 d. Then, three...

By utilizing a modified solid/oil/water (s/o/w) emulsion solvent evaporation technique, calcium phosphate composite scaffolds containing simvastatin-loaded PLGA microspheres (SIM-PLGA-CPC) were prepared in this study. We characterized the morphology, encapsulation efficiency and vitro drug release of SIM-loaded as well macrostructure, pore size, porosity mechanical strength scaffolds. Rabbit bone mesenchymal stem cells (BMSCs) seeded onto SIM-PLGA-CPC scaffolds, proliferation, cell cycle...

A novel, high toughness, double network organohydrogel was fabricated with fast self-recovery, anti-freezing and anti-fatigue properties sensing performance.

Purpose : X‐ray fluorescence (XRF) is a promising technique with sufficient specificity and sensitivity for identifying quantifying features in small samples containing high atomic number (Z) materials such as iodine, gadolinium, gold. In this study, the feasibility of applying XRF to early breast cancer diagnosis treatment studied using novel approach three‐dimensional (3D) x‐ray mapping (XFM) gold nanoparticle (GNP)‐loaded objects physical phantom at technical level. Methods All...

The existence of dead broilers in flat broiler houses poses significant challenges to large-scale and welfare-oriented breeding. To ensure the timely identification removal broilers, a mobile device based on visual technology for grasping them was meticulously designed this study. Among multiple recognition models explored, YOLOv6 model selected due its exceptional performance, attaining an impressive 86.1% accuracy identification. This model, when integrated with specially robotic arm,...

The nonlinear absorption (NLA) properties of copper phthalocyanine (CuPc)-doped polymethylmethacrylate (PMMA) thin film in the femtosecond regime were investigated both experimentally and theoretically. open-aperture (OA) Z-scan measurements carried out by laser pulse. A transition from saturable (SA) to reverse (RSA) was observed as excitation intensity is increased. rate equation analysis based on an developed efficient energy level model performed dependence populations obtained, which...

Running in barefoot running footwear has gained popularity among both amateur and professional runners recent times. To date, few studies have been performed using coupled finite element model of foot footwear. The objective this study was to investigate the differences peak plantar pressure during landing weight-bearing period between a stress distributions concentrations forefoot region for simulations different loadings shoe were also investigated through applied loadings. analysis showed...

Using nanosphere lithography and pulsed laser deposition, Au nanoparticles with different height have been fabricated on quartz substrates. The surface images of particles were observed by scanning electron microscopy, the results showed that prism-shaped form a periodical array. In U-V-visible absorption spectrum, strong peaks due to plasmon resonance observed. Furthermore, theoretical calculation based discrete dipole approximation was performed. experimental show nanoprism shifted blue...

The composite of poly-lactic-co-glycolic acid (PLGA) and calcium phosphate cements (CPC) are currently widely used in bone tissue engineering. However, the properties biocompatibility alendronate-loaded PLGA/CPC (APC) porous scaffolds have not been characterized. APC were prepared by a solid/oil/water emulsion solvent evaporation method. morphology, porosity, mechanical strength Bone marrow mesenchymal stem cells (BMSCs) from rabbit cultured, expanded seeded on scaffolds, cell adhesion,...

Yellow feather broilers' behavior in the breeding environment can be tracked to analyze their behaviors and health status further. An improved YOLOv3 (You Only Look Once v3) algorithm was used as detector of Deep SORT (Simple Online Realtime Tracking) realize multiple object tracking yellow broilers flat chamber, which replaced backbone with MobileNetV2 improve inference speed detection module. The DRSN (Deep Residual Shrinkage Network) integrated enhance feature extraction capability...

The purpose of this study was to determine the Contrast Noise Ratio (CNR) x-ray images taken with phase contrast imaging mode and compare them CNR under conventional mode. For each mode, three were exposure conditions 100 kVp (2.8mAs), 120 (1.9mAs) 140kVp (1.42mAs). A 1.61cm thick detail phantom used as an object. contrast, source image detector distance (SID) 182.88 cm object (SOD) 73.15 cm. SOD same SID in computed radiography (CR) plate a output CR converted linear form relation incident...

A method for determining the modulation transfer function (MTF) in direct X-ray fluorescence mapping (XFM) system is reported. With a standard container filled with homogeneous gold nanoparticle (GNP) solution (1% by weight), sharp edges are made and utilized to acquire data edge spread (ESF). Through necessary processing such as signal extraction, attenuation correction curve fitting proper calculations of differentiating Fourier transform, MTF can be determined. Influencing factors...

X-ray fluorescence (XRF) is a promising spectroscopic technique to characterize imaging contrast agents with high atomic numbers (Z) such as gold nanoparticles (GNPs) inside small objects. Its utilization for biomedical applications, however, greatly limited experimental research due longer data acquisition time. The objectives of this study are apply photon counting detector array XRF and determine an optimized time, at which the acquired image acceptable quality allow maximum level...

The aim of this study was to investigate the noise power properties a micro-computed tomography (micro-CT) system under different operating conditions.

Single-phase CuO thin films have been obtained on Si(100) and quartz substrates using pulsed laser deposition technique. The structure, surface image, optical transmittance reflectance of the were characterized by X-ray diffraction, Raman spectroscopy, scanning electron microscopy UV-vis spectroscopy. SEM image demonstrates that grain size is about 45nm. third-order nonlinearities in investigated Z-scan method a femtosecond (800nm, 50fs). results show ultrafast nonlinear response large...

The characteristic performance of a photon counting detector for X-ray fluorescence (XRF) imaging gold nanoparticles (GNPs) is investigated. investigations are first performed in three aspects: energy (keV) to pulse height (mV) conversion, noise floor determination, and linear detection ranges. Then, theoretical models applied evaluate the efficiency photons with respect an increased incident rate. Last, through exciting 100% pure GNPs by conventional tube operated at voltage 110kVp, we...

This study presents a practical alignment method for X-ray spectral measurement in rotating gantry based micro-computed tomography (micro-CT) system using three-dimensional (3D) printing technology. In order to facilitate the spectrometer placement inside gantry, supporting structures including cover and stand were dedicatedly designed printed 3D printer. According relative position between stand, upright projection of collimator onto was determined then marked by tungsten pinhole. Thus,...

Knock Factor relatively indicates the knock energy during knocking combustion, and is widely used for detection of gasoline engines. Focusing on probability distribution KF, mass data combustion test were studied statistically by several approaches such as quantile graph, kurtosis skewness check, well Lilliefors test. It found that KF sample cycles without conforms to law normal while with does not. However, embodying signal can be still normalized removing abnormal individual which...

The <i>Journal of Biomedical Optics</i> (JBO) is a Gold Open Access journal that publishes peer-reviewed papers on the use novel optical systems and techniques for improved health care biomedical research.