The First Example of Tb-3-Containing Metallopolymer-Type Hybrid Materials with Efficient and High Color-Purity Green Luminescence

In the series of homo-leptic trinuclear complexes {[Ln(3)(L)(4)Cl-4(MeOH)(H2O)]center dot Cl} (Ln = La, 1; Ln = Eu, 2; Ln = Tb, 3 or Ln = Gd, 4) self-assembled from the allyl-modified benzimidazole-type ligand HL (4-allyl-2-(1H-benzo[d]imidazol-2-yl)-6-methoxyphenol) and LnCl(3)center dot 6H(2)O, a suitable energy level match endows efficient green luminescence (Phi(overall) = 72%) of Tb-3-arrayed complex 3. The copolymerization between each of these complex monomers 1-4 and C=C-containing MMA (methyl methacrylate) or NBE (norbornene) shows that degradative chain transfer of the terminal four flexible allyl groups within restrains their radical polymerization with MMA while it does not hinder their effective ring-opening metathesis polymerization (ROMP) with NBE. Thus, two kinds of PMMA-supported doping hybrid materials 1@PMMA, 2@PMMA, 3@PMMA and 4@PMMA and PNBE-supported metallopolymer-type hybrid materials Poly( NBE-1), Poly(NBE-2), Poly(NBE-3) and Poly(NBE-4) are obtained, respectively. Especially for both 3@PMMA and Poly(NBE-3) with high color-purity characteristic green emission of Tb3+ ions, improved physical properties including significantly enhanced luminescence (Phi(overall) = 76% or 83%) are observed, and covalent-bonding endows a higher-concentration self-quenching as compared to physical doping.National Natural Science Foundation 21373160, 91222201, 21173165Program for New Century Excellent Talents in University from the Ministry of Education of China NCET-10-0936Doctoral Program of Higher Education 20116101110003Science and Technology and Innovation Project of Shaanxi Province 2012KTCQ01-37Graduate Innovation and Creativity Fund (Visiting Learner) of Northwest University in P. R. ChinaChemistr

BacHBerry: BACterial Hosts for production of Bioactive phenolics from bERRY fruits

BACterial Hosts for production of Bioactive phenolics from bERRY fruits (BacHBerry) was a 3-year project funded by the Seventh Framework Programme (FP7) of the European Union that ran between November 2013 and October 2016. The overall aim of the project was to establish a sustainable and economically-feasible strategy for the production of novel high-value phenolic compounds isolated from berry fruits using bacterial platforms. The project aimed at covering all stages of the discovery and pre-commercialization process, including berry collection, screening and characterization of their bioactive components, identification and functional characterization of the corresponding biosynthetic pathways, and construction of Gram-positive bacterial cell factories producing phenolic compounds. Further activities included optimization of polyphenol extraction methods from bacterial cultures, scale-up of production by fermentation up to pilot scale, as well as societal and economic analyses of the processes. This review article summarizes some of the key findings obtained throughout the duration of the project

Gut microbiome structure and evolution in <i>Parnassius</i> species on the Qinghai-Tibet Plateau

Based on the aggregated genome-based phylogeny and microbial data of Parnassius species at the population level which were generated with the same collection methods, we utilized a robust analytical framework to resolve the relative importance of host genetics, geography, altitude, and larval host-plant on gut microbial community structure and evolution. Our findings indicate that both host genetics and larval host-plant modulated gut microbial diversity and community structure. Moreover, we decoupled the effects of host genetics and larval diet on gut microbiome and showed that host genetics mainly governed gut microbial beta diversity and community structure, while larval host-plant functionally influenced gut microbiome evolution. Our findings help to resolve the major modulators of gut microbiome diversity and evolution in butterfly species, which have not been well studied in wild insects with varying degrees of ecological niche divergence and evolutionary relatedness, especially those inhabit on the QTP.</p

<i>Colias sifanica</i> mitochondrion, complete genome

Colias sifanica mitochondrion, complete genome</p

Construction control of cable-stayed bridge top push method based on BIM technology

Abstract This research focuses on enhancing the precision and management of the top push method in cable-stayed bridge construction through the application of building information modeling (BIM) technology. By evaluating BIM standards, engineering decomposition standards, and modeling software, an appropriate BIM platform and standard were selected to create BIM models for each component of cable-stayed bridges. Using the Yellow River Cable-stayed Bridge as a case study, various construction schemes were visualized through BIM. The study investigated the impact of key structural parameters, such as cable stiffness, main girder stiffness, and main tower stiffness, on the top push method by adjusting them by − 3%, − 1%, 1%, and 3%. The outcomes showed that changes in cable stiffness had the most significant effect, with a 1% stiffness variation causing a 51.3 mm displacement in the main girder and a 124.2 kN deviation in cable force, increasing to 151.2 mm and 179.8 kN respectively for a 3% change. This research demonstrates that BIM technology can significantly improve the management of top-push construction methods, enable three-dimensional visualization of the construction process, and advance the informatization and industrialization of bridge construction