An effective image-based measurement for the BRDF of objects was proposed with specular reflection. Unlike traditional methods, using measurements to fit BRDF parameters directly, specular and diffuse parameters were fitted respectively. Firstly, the specular components and diffuse components of reflectance were reliably separated. Then, separated components were used to fit the two kinds of parameters independently. Experiments were conducted using the method as well as the traditional ones, and the results indicate that the method has a better performance for the BRDF acquisition of specular objects.
Objective: To investigate the relationship between sperm apoptosis and genital tract chlamydia trachomatis (CT) and ureplasma urealyticum (UU) infections in infertile males. Methods: Percentages of apoptotic sperm (PAS) in patients with CT and UU infections were tested by flow cytometry(FCM) with FITC annexin V/PI staining Results: Sperm apoptosis had happened in male infertile patients with CT and UU infections. The PAS in CT and UU positive and negative groups were (14.54± 3.90)%, (8.37±6.30)%, (15.26±6.56)%, (9.25±4.03)%, respectively. The differences between CT/UU positive and negative groups were significant ( P 0.05). The PAS in both CT and UU positive group was higher(22.21±6.52)% than that of normal control (5.50±2.08)( P 0.01) Conclusion: There was vary close relationship between sperm apoptosis and genital tract CT and UU infections in infertile males. The genital tract CT and UU infections may lead to marked increasing of the sperm apoptosis.
Lead halide perovskite quantum dots (PQDs) have demonstrated extremely excellent optical properties and great application potential in various optoelectronic devices. However, it is still a challenge to maintain both stability and multipeak emission performance for PQDs. In this work, we successfully synthesized multipeak emission CsPbCl1.5Br1.5: Eu3+-SiO2 PQDs employing molecular sieves through high temperature solid state reactions, and the energy transfer process was designed. Furthermore, the as-prepared doped PQDs are utilized for white light emitting diodes, which show excellent white light performance. The material is expected to be applied as a component on high quality WLED devices, and our finding is believed to offer a new strategy for designing multipeak emission PQDs.
Abstract Fatty acid binding proteins (FABPs) are a class of small molecular mass intracellular lipid chaperone proteins that bind to hydrophobic ligands, such as long‐chain fatty acids. FABP5 expression was significantly upregulated in the N ‐methyl‐ d ‐aspartic acid (NMDA) model, the microbead‐induced chronic glaucoma model, and the DBA/2J mice. Previous studies have demonstrated that FABP5 can mediate mitochondrial dysfunction and oxidative stress in ischemic neurons, but the role of FABP5 in oxidative stress and cell death in retina NMDA injury models is unclear. In this study, we found that FABP5 is significantly altered in a model of glutamate excitotoxicity and is regulated by Stat3. Inhibition of FABP5 alleviated oxidative stress imbalance and activation of NLRP3 inflammasome, reduced the release of inflammatory factors, and ultimately attenuated glutamate excitotoxicity‐induced retinal ganglion cell loss. Meanwhile, caspase1 inhibitors could alleviate the retinal ganglion cell loss induced by glutamate excitotoxicity. In conclusion, FABP5 inhibition protects retina ganglion cells from excitotoxic damage by suppressing the ROS‐NLRP3 inflammasome pathway. FABP5 maybe a promising new target for glaucoma diagnosis and treatment.
Phase Doppler anemometry(PDA) is very sensitive to the shape of testing particles, which is based on sphericity assumption and Mie's theory. In practice, there exists effectiveness of non sphericity and the response of PDA system deviates from the theoretical prediction. In this paper, the statistic characteristics of PDA signal are analyzed and a method of identifying and quantifying irregular particles is proposed. It is concluded that phase difference of PDA signal for irregular particles is an unbiased estimation for spherical particles.
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