Precisely Prepared Hierarchical Micelles of Polyfluorene-block-Polythiophene-block-Poly(phenyl isocyanide) via Crystallization-Driven Self-Assembly.

The precise preparation of hierarchical micelles is a fundamental challenge in modern materials science and chemistry. Herein, poly(di-n-hexylfluorene)-block-poly(3-tetraethylene glycol thiophene) (poly(1-b-2)) diblock copolymers and polyfluorene-block-polythiophene-block-poly(phenyl isocyanide) triblock copolymers were synthesized using a one-pot process via the sequential addition of corresponding monomers using a Ni(II) complex as a single catalyst for living/controlled polymerization. The crystallization-driven self-assembly of amphiphilic conjugated poly(1-b-2) led to the formation of nanofibers with controlled lengths and narrow dispersity.

Morphological and life-history trait plasticity of two species induced by fish kairomones.

can avoid predation by sensing fish kairomones and producing inducible defenses by altering the phenotype. In this study, the results showed that the morphological and life-history strategies of two species ( and ) exposed to kairomones. In the presence of fish kairomones, the two species exhibited significantly smaller body length at maturity, smaller body length of offspring at the 10th instar, and longer relative tail spine of offspring.

Field survey data for conservation: Evaluating suitable habitat of Chinese pangolin at the county-level in eastern China (2000-2040).

The scarcity of up-to-date data on the distribution and dynamics of the Chinese pangolin () presented a significant challenge in developing effective conservation strategies and implementing protective measures within China. Currently, most of China's national-level nature reserves and administrative departments operate at the county level, thereby limiting the applicability of larger-scale analyses and studies for these administrative entities. This study employed 11 widely used modeling techniques created within the Biomod2 framework to predict suitable habitats for the pangolin at the county scale, while examining the correlation between environmental variables and pangolin distribution.

Microwave-accelerated cross-dehydrogenative-coupling (CDC) of -(quinolin-8-yl)amides with acetone/acetonitrile under metal-free conditions.

A highly selective remote C(sp)-H acetonation of -(quinolin-8-yl)amide scaffolds at the C5-position under microwave irradiation has been developed. In the absence of a transition-metal-catalyst, benzoyl peroxide (BPO)-promoted cross-dehydrogenation coupling (CDC) of -(quinolin-8-yl)amides with acetone/acetonitrile occurred smoothly to generate the corresponding 5-acetonated/acetonitriled -(quinolin-8-yl)amides in good yields. The transformation is operationally simple, rapid, easily scaled-up to the gram scale, and shows a broad substrate scope.

Constructing carbon supported copper-based catalysts for efficient CO hydrogenation to methanol.

An activated carbon-supported Cu/ZnO catalyst (CCZ-AE-ox) was successfully obtained by the ammonia evaporation method for the hydrogenation of carbon dioxide to methanol, and the surface properties of the catalyst post-calcination and reduction were investigated. Activated carbon facilitated the increased dispersion of the loaded metals, which promote the CO space-time yield (STY) of methanol and turnover frequency (TOF) on the active sites. Furthermore, the factors affecting the catalyst in the hydrogenation of CO to methanol were in-depth investigated.

Comparative analysis of chloroplast genomes of endangered heterostylous species and its closely related species.

, well known for its heterostyly, is the largest genus in the family Primulaceae with more than 500 species. The considerable species number has introduced a huge challenge for taxonomy. The phylogenetic relationships among still maintain unresolved due to frequent hybridization and introgression between closely related species.

High-performance electromagnetic wave absorption in cobalt sulfide flower-like nanospheres.

A heterophase cobalt sulfide absorbing material with petal-like surface structure was prepared by a simple hydrothermal method. The cobalt sulfide sample with the optimal microwave absorption capacity was achieved through regulating the reaction temperature. By regulating the reaction temperature to 200 °C, the optimal reflection loss was -48.

Extensive sharing of chloroplast haplotypes among East Asian Cerris oaks: The imprints of shared ancestral polymorphism and introgression.

Shared ancestral polymorphism and introgression are two main causes of chloroplast DNA (cpDNA) haplotype sharing among closely related angiosperms. In this study, we explored the roles of these two processes in shaping the phylogeographic patterns of East Asian Cerris oaks by examining the geographic distributions of randomly and locally distributed shared haplotypes, which coincide with the expectations of shared ancestry and introgression, respectively. We sequenced 1340 bp of non-coding cpDNA from ( = 418) and ( = 183) and compiled previously published sequence data of ( = 439).

Ecological drivers of avian diversity in a subtropical landscape: Effects of habitat diversity, primary productivity and anthropogenic disturbance.

Understanding the roles of ecological drivers in shaping biodiversity is fundamental for conservation practice. In this study, we explored the effects of elevation, conservation status, primary productivity, habitat diversity and anthropogenic disturbance (represented by human population density and birding history) on taxonomic, phylogenetic and functional avian diversity in a subtropical landscape in southeastern China. We conducted bird surveys using 1-km transects across a total of 30 sites, of which 10 sites were located within a natural reserve.

Construction and performance of a simple and efficient g-CN photocatalytic hydrogen production system.

Surface and bulk structure modification is an effective strategy to improve the photocatalytic performance of g-CN (CN). In this work, dilute NaOH solution was used to regulate the CN structure for enhanced photocatalytic hydrogen evolution reaction (HER). Characterization results indicate that after treatment with dilute NaOH solution, the surface of CN was hydroxylated, resulting in the change of CN structure and the increase of BET specific surface area.

Fabrication of one dimensional hierarchical WO/BiOI heterojunctions with enhanced visible light activity for degradation of pollutants.

One-dimensional (1D) hierarchical WO/BiOI p-n (WB) heterojunctions with different mass percentages of WO were fabricated through a precipitation process. Various analytical techniques were employed to characterize the resulting WB composites, and their photocatalytic properties were measured by the degradation of rhodamine B (RhB) and methylene blue (MB) under irradiation of visible light. The WB heterojunctions showed largely enhanced photocatalytic performance as compared to the pure photocatalysts.

Effects of toxic on the expression of Hox genes in .

Lake eutrophication and cyanobacterial blooms have become worldwide environmental issues. Under cyanobacterial blooms (especially ), spp. can transfer beneficial information to their offspring in order to improve adaptability.

[Research progress on mechanism of phytohormones in regulating flavonoid metabolism].

Phytohormones play an important role at all stages of plant growth, influencing plant growth and development and regulating plant secondary metabolism, such as the synthesis of flavone, flavonol, anthocyanin, and other flavonoids. Flavonoids, a group of important secondary metabolites ubiquitous in plants, have antioxidative, anti-microbial, and anti-inflammatory activities and thus have a wide range of potential applications in Chinese medicine and food nutrition. With the development of biotechnology, phytohormones' regulation on flavonoids has become a research focus in recent years.

[Regulation of β-mercuryl alcohol metabolic flow in Saccharomyces cerevisiae cells].

In this study, citrate synthase gene(CIT2), and malate synthase gene(MLS1) were successfully knocked out in β-amyrin-producing yeast cells by using CRISPR/CAS9. The promoter of phosphoglucose isomerase gene(PGI1) was replaced by that of cytochrome c oxidase subunit Ⅶa(Cox9)to weaken its expression, aiming to channel more carbon flux into the NADPH-producing pathway. The fermentation results showed that CIT2 deletion had no effect on the β-amyrin production.

Z-scheme BiVO/Ag/AgS composites with enhanced photocatalytic efficiency under visible light.

The Z-scheme BiVO/Ag/AgS photocatalyst was fabricated a two-step route. The as-prepared samples were characterized by XRD, FE-SEM, HRTEM, XPS and UV-vis diffuse reflectance spectroscopy. The results of PL and photocurrent response tests demonstrate that the ternary BiVO/Ag/AgS composites had a high separation and migration efficiency of photoexcited carriers.

Two new species of the genus Tinkham, 1937 (Orthoptera, Tetrigidae) from Guizhou and Chongqing, PR China.

Two new pygmy grasshopper species are described from PR China and are assigned to Tinkham, 1937, a large Asian tetrigin genus composed of species with reduced tegmina and hind wings: Zha & Ding, from Guizhou and Zha & Ding, from Chongqing. We provide descriptions of morphology and habit, supplemented with photographs. Flying organs of the genus are discussed and the genus is compared with other Asian genera with reduced flying organs, such as Zheng, 1994 and Liang, 1993 in Tetriginae, Hancock, 1904, Hancock, 1907 and Zheng, 1995 in Cladonotinae, and Zheng, Wei & Jiang, 2005 and Zheng, Li & Lin, 2012 in Metrodorinae.

[Analysis of shading on DNA methylation by MSAP in Pinellia ternata].

Pinellia ternata is a medicinal herb of Araceae, and its tubers are used as medicines. It is a common Chinese herbal medicine in China and has a large market demand. When exposing to strong light intensity and high temperature during the growth process, P.

[Variation analysis of genomic methylation induced by high temperature stress in Pinellia ternata].

Pinellia ternata belongs to the Araceae family and is a medicinal herb. The tuber is the medicinal organ with antitussive, antiemetic and anti-tumor activities. It is easy to encounter high temperature environment during the growth periods, leading to decrease of tuber production.

Preparation of cobalt sulfide@reduced graphene oxide nanocomposites with outstanding electrochemical behavior for lithium-ion batteries.

Cobalt sulfide@reduced graphene oxide composites were prepared through a simple solvothermal method. The cobalt sulfide@reduced graphene oxide composites are composed of cobalt sulfide nanoparticles uniformly attached on both sides of reduced graphene oxide. Some favorable electrochemical performances in specific capacity, cycling performance, and rate capability are achieved using the porous nanocomposites as an anode for lithium-ion batteries.

Fabrication of a novel BiOI/KTaO p-n heterostructure with enhanced photocatalytic performance under visible-light irradiation.

In this study, a series of BiOI/KTaO p-n heterojunctions were prepared a facile chemical bath strategy. The photocatalytic properties of the catalysts was tested by the degradation of Rhodamine B (RhB) and phenol under visible light irradiation. The BiOI/KTaO composites exhibited improved photocatalytic efficiency compared to the individual catalysts.

Photoinitiated decarboxylative C3-difluoroarylmethylation of quinoxalin-2(1)-ones with potassium 2,2-difluoro-2-arylacetates in water.

An efficient and green strategy for the preparation of C3-difluoroarylmethylated quinoxalin-2(1)-one a visible-light-induced decarboxylative C3-difluoroarylmethylation of quinoxalin-2(1)-one with potassium 2,2-difluoro-2-arylacetate in water at room temperature was developed. This photoinduced reaction generated the desired products in good yields under simple and mild conditions.

Photocatalytic properties and energy band offset of a tungsten disulfide/graphitic carbon nitride van der Waals heterojunction.

Semiconductor heterojunctions have higher photocatalytic performance than a single photocatalytic material. However, the energy band offset and the photocatalytic reaction mechanism of these heterojunctions remain controversial. Here, tungsten disulfide (WS)/graphitic carbon nitride (GCN) heterojunction photocatalytic water splitting is investigated with the hybrid density functional method.

Genetic diversity and differentiation of in the middle and lower reaches of the Yangtze River, China.

Mitochondrial rDNA and I gene were used as molecular markers for the analysis of the genetic diversity and differentiation of populations in nine water bodies in the middle and lower reaches of the Yangtze River. In the combined rDNA and I gene sequences, 54 variable sites and 44 haplotypes were observed among 219 individuals belonging to nine populations. Average haplotype diversity and nucleotide diversity were, respectively, 0.