Information security is crucial with the increasing data and internet usage. In data communication, Imaging data is one of the most frequently used data types for communication, especially in intelligence operations and in law enforcement use cases. Steganography is a method for hiding secrets in cover images, followed by complex image encryption and decryption methods. Previously, many Deep Learning (DL) methods have been proposed on steganography and achieved competitive results. However, there is still a need for lightweight, computationally less expensive DL models. Therefore, a computationally inexpensive, lightweight dual-branch based Variational Auto Encoder (VAE) model is proposed, namely SE-Attn StegaVAE. In this model, the Squeeze and Excitation (SE) block, Attention, and skipping connections are effectively used, whereas a sequentially optimal way is adapted to hide the secret in attention-oriented cover samples. Furthermore, a multi-objective loss function is proposed to penalize the model to hide secrets effectively and reconstruct them without any loss of information. In this study, three experiments have been performed with three different bit embeddings (2, 4, and 8) on the DIV2K dataset utilizing the SE-Attn StegaVAE model. Two-fold validation-based testing results outperformed as compared to State-of-the-Art (SOTA) methods and proven to be more error-free, computationally less expensive, with competitive similarity scores.
The ternary selenides A2Sb4Se8 (A = K, Rb, Cs) are predicted to be a high-performance n-type thermoelectric material, and the conformationally-flexible Sb–Se(2)–Se(2)–Sb bridges are crucial in determining the thermoelectric properties of A2Sb4Se8.
Black single crystals of Cs2U2(P2Se9)(Se2)2 were synthesized at 1023 K by a solid‐state reaction. Its structure was determined by single‐crystal X‐ray diffraction methods. The compound is isostructural with Rb2U2(P2Se9)(Se2)2 and Cs2Th2(P2Se9)(Se2)2 compounds, and crystallizes in the orthorhombic space group Pbca. Cs2U2(P2Se9)(Se2)2 displays a three‐dimensional structure comprising USe9 polyhedra connected via the Se22– and P2Se9 species with channels filled by Cs atoms. From electronic structure calculations the compound is found to be a metal with a ferromagnetic arrangement of the magnetic moments.
Synthesis and Crystal Structure of Cs3Y7Se12The oxidation of yttrium metal with selenium in the presence of CsCl (7 d, 700°C, evacuated silicia tubes) results in the formation of pale yellow, lath‐shaped single crystals of Cs3Y7Se12. The crystal structure (orthorhombic, Pnnm, Z = 2, a = 1272.8(3), b = 2627.7(5), c = 413.32(8) pm) consists of edge‐ and vertex‐connected [YSe6] octahedra forming a rocksalt‐related network [Y7Se12]3−. One‐dimensional infinite channels along [001], apt to take up extra cations, provide coordination numbers of 6 and 7 + 1, respectively, for two crystallographically different Cs+.
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
The induction of macrophage death is regarded as a potential mechanism by which components secreted by Clostridium septicum are used to evade the innate immune response and cause tissue damage. This study aimed to determine the effect of partially purified fractions of extracellular proteins secreted by C. septicum on the death of mouse peritoneal macrophages. Elicited mouse peritoneal macrophages were incubated with partially purified fractions of proteins secreted by C. septicum into the culture medium. After incubation, we found that the protein fraction with a molecular weight ≥ 100 kDa caused significant cell death in macrophages, changed cell morphology, increased markers of apoptosis and autophagy, and increased the expression (protein and mRNA) of IL-10 and TNFα Our data suggest that the proteins secreted by C. septicum (MW, ≥ kDa) induce cell death in macrophages by promoting autophagy- triggered apoptosis. This study may contribute to our understanding of the molecular mechanism of immune evasion by C. septicum at the infection site.