Confinement loss prediction in diverse anti-resonant fibers through neural networks.

In this work, genetic algorithm (GA) is employed to optimize convolutional neural networks (CNNs) for predicting the confinement loss (CL) in anti-resonant fibers (ARFs), achieving a prediction accuracy of CL magnitude reached 90.6%, which, to the best of our knowledge, represents the highest accuracy to date and marks the first instance of using a single model to predict CL across diverse ARF structures. Different from the previous definition of ARF structures with parameter groups, we use anchor points to describe these structures, thus eliminating the differences in expression among them.

Inhibitory Mechanisms of -2-Hexenal on the Growth of -.

- (-) is one of the most important postharvest pathogens leading to a postharvest loss of citrus by causing sour rot. In this study, the antifungal activity of -2-hexenal, a natural component of essential oil, against - was evaluated. -2-hexenal treatment inhibited the mycelia growth of - with a minimum inhibitory concentration and minimum fungicidal concentration of -2-hexenal at 0.

Observation of bound solitons generated by a figure-9 fiber laser in the 1 µm band.

The paper describes the observation of diverse bound-state patterns, including tightly bound states, loosely bound states, and composite bound states, in a figure-9 fiber laser. By performing dispersion management and using polarization-maintaining fibers with high gain coefficient, stable dispersion-managed solitons and bound solitons can be simultaneously generated. This work advances our understanding of complex soliton dynamics and presents a novel, to the best of our knowledge, approach for future applications of bound states.

Surface-Enhanced Raman Scattering-Active Plasmonic Metal Nanoparticle-Persistent Luminescence Material Composite Films for Multiple Illegal Dye Detection.

Uniform two-dimensional plasmonic nanoparticle (NP)-semiconductor composite films could retard the attenuation of electromagnetic evanescent wave and show intensive Raman activity for the multiplex monitoring of hazards in a practical food matrix. Here, an efficient Raman platform is developed by employing a plasmonic nanoparticle (NP)-persistent luminescence material (PLM) composite film. PLM show upconversion photoluminescence (UCPL) properties.

Citronellal Exerts Its Antifungal Activity by Targeting Ergosterol Biosynthesis in .

Ergosterol (ERG) is a potential target for the development of antifungal agents against , the pathogen of green mold in citrus fruits. This study examined the mechanism by which citronellal, a typical terpenoid of essential oil, acts on ergosterol to exhibit its antifungal activity against . We previously reported that citronellal inhibited the growth of with minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) of 1.

1,1'-(Ethane-1,2-di-yl)dipyridinium bis-(1,2-di-cyano-ethene-1,2-di-thiol-ato-κ(2) S,S')cuprate(II).

In the title ion-pair complex, (C12H14N2)[Cu(C4N2S2)2], the complex anion exhibits a highly twisted coordination environment around the tetra-coordinated Cu(II) atom. The dihedral angles between the 1,2-di-cyano-ethene-1,2-di-thiol-ato ligands and between the two pyridine rings in the cation are 37.49 (3) and 29.

Poly[[aqua-(μ(2)-4,4'-bipyridine-κ(2)N:N')[μ(3)-3-bromo-2-(carboxyl-atometh-yl)-benzoato-κ(3)O(1):O(1'):O(2)]cadmium] monohydrate].

In the title compound, {[Cd(C(9)H(5)BrO(4))(C(10)H(8)N(2))(H(2)O)]·H(2)O}(n), the Cd(II) atom has a distorted octa-hedral coordination geometry. Two N atoms from two 4,4'-bipyridine (bipy) ligands occupy the axial positions, while the equatorial positions are furnished by three carboxyl-ate O atoms from three 3-bromo-2-(carboxyl-atometh-yl)benzoate (bcb) ligands and one O atom from a water mol-ecule. The bipy and bcb ligands link the Cd(II) atoms into a three-dimensional network.

catena-Poly[[tetra-aqua-nickel(II)]-μ-(9,10-dioxo-9,10-dihydro-anthracene-1,4,5,8-tetra-carboxyl-ato)-κ(2)O(1):O(8)-[tetra-aqua-nickel(II)]-μ-4,4'-bipyridine-κ(2)N:N'].

In the crystal of the title polymeric complex, [Ni(2)(C(18)H(4)O(10))(C(10)H(8)N(2))(H(2)O)(8)](n), each Ni(II) cation is coord-in-ated by four water mol-ecules in the equatorial plane, and is further bridged by an 9,10-dioxo-9,10-dihydro-anthracene-1,4,5,8-tetra-carb-oxy-l-ate anion and a 4,4'-bipyridine ligand in the axial directions, forming a distorted octa-hedral geometry. The 9,10-dioxo-9,10-dihydro-anthracene-1,4,5,8-tetra-carboxyl-ate anion is centrosymmetric with the centroid of the quinone ring located about an inversion center; the 4,4'-bipyridine ligand is also centrosymmetric with the mid-point of the C-C bond linking two pyridine rings located about another invertion center. The 9,10-dioxo-9,10-dihydro-anthracene-1,4,5,8-tetra-carboxyl-ate anion and bypiridine ligand bridge the Ni(II) cations, forming a polymeric chain along the b axis.

Spectroscopic and theoretical studies on cobalt(II) complex of maleonitriledithiolate and 5-nitro-1,10-phenanthroline.

The molecular structure, electronic and infrared spectroscopic properties for the title complex Co(mnt)(5-NO2-phen) (mnt2-=maleonitriledithiolate, 5-NO2-phen=5-nitro-1,10-phenanthroline) were studied in this paper. With semi-empirical PM3 and non-empirical density functional theory (DFT) methods, the gaseous molecular geometry of the complex was optimized and corresponding vibrational spectra was obtained. The calculated results of structure and frequency from DFT were more reasonable than those from PM3, and the two methods were both agreed with the experimental values.

Spectroscopic and theoretical studies on cobalt (II) complex of maleonitriledithiolate and 5-nitro-1,10-phenanthroline.

The molecular structure, electronic and infrared spectroscopic properties of the title complex Co(mnt)(5-NO(2)-phen) (mnt(2-) = maleonitriledithiolate, 5-NO(2)-phen = 5-nitro-1,10-phenanthroline) were studied in this paper. With non-empirical density functional theory (DFT) methods, the gaseous molecular geometry of the complex was optimized and corresponding vibrational spectra was obtained. A complete assignment to the IR spectra of such a complicated molecule has been exhibited.