Enhanced bioactivity of Zanthoxylum schinifolium fermented extract: Anti-inflammatory,anti-bacterial,and anti-melanogenic activity

1. Download : Download high-res image (151KB)
2. Download : Download full-size image

     

A new approach to visualizing time-varying sensitivity indices for environmental model diagnostics across evaluation time-scales

Assessing the time-varying sensitivity of environmental models has become a common approach to understand both the value of different data periods for estimating specific parameters, and as part of a diagnostic analysis of the model structure itself (i.e. whether dominant processes are emerging in the model at the right times and over the appropriate time periods). It is not straightforward to visualize these results though, given that the window size over which the time-varying sensitivity is best integrated generally varies for different parameters. In this short communication we present a new approach to visualizing such time-varying sensitivity across time scales of integration. As a case study, we estimate first order sensitivity indices with the FAST (Fourier Amplitude Sensitivity Test) method for a typical conceptual rainfall–runoff model. The resulting plots can guide data selection for model calibration, support diagnostic model evaluation and help to define the timing and length of spot gauging campaigns in places where long-term calibration data are not yet available.     

Inorganic anion-induced structural diversity and structural transformation in a metal-negative ligand system containing Cd(II) ion and naphthalene diimide ligand

The coordination of a new 1,4,5,8-naphthalenediimides-based ligand N,N-di-(5-tetrazol)-1,4,5,8-naphthalenetetracarboxydiimide (H₂dtNDI) with CdSO₄ afforded mixtures containing {[Cd(dtNDI)(DMF)_2.5]·DMAc}_n (1) and {[Cd₂(dtNDI)₂(DMAc)₂]·DMAc}_n (2) as components. Whereas the coordination of H₂dtNDI with CdX₂ (x = ClO₄⁻, NO₃⁻ and I⁻) afforded pure coordination polymer, namely, {[Cd(dtNDI)(H₂O)_2.5]·DMAc}_n (3). All the compounds contain binuclear M₂L₂ ring as secondary building block (SBU). Compound 1 is a 1D chain composed of the binuclear SBUs and dimeric Cd(II) MBBs. Compound 2 exhibit a 2D network with (4·8²) topology based on a binuclear SBUs. Compound 3 possess a five-fold interpenetrating 3D dia framework with tetrameric Cd(II) MBBs as nodes and binuclear SBUs as linkers. Although the inorganic anions are not appeared in the final frameworks of compounds 1–3, they play an important role in the structural formation during assembly process. In addition, the mixtures composed of compounds 1–2 can transfer to pure compounds 3 via solvent-mediated process.     

Reactive atmosphere processing of oxides (Part II)

The application of the reactive atmosphere process (RAP) to rare-earth oxides to suppress OH⁻ impurity introduction is extended to the reduction of the higher oxide. A marked difference in the action of H₂ and CO is shown in the reduction of Tb₄O₇ to Tb₂O₃.     

去除铁锰离子微生物活性滤料的研制

探索在复合载体中添加粉煤灰、麸皮,活性炭制备固定化小球,通过包埋铁锰氧化细菌(节杆菌),用于处理含铁锰的原水,并以水体中铁锰去除率为指标考察影响铁锰去除的各种因素,通过试验优化了固定化小球的制备条件。结果表明,当菌体含量70 g/L,粉煤灰20 g/L,活性炭粉30 g/L,麸皮10 g/L,在此条件下制作的固定化小球作用于Mn2+、Fe2+质量浓度分别为30 mg/L、100 mg/L的原水,2 d后铁去除率为100%,7 d锰去除率为99.02%,显示出较好的除铁锰性能。固定化小球去除铁锰的较适宜pH为7,增加小球用量可进一步提高铁锰去除率。在一定范围内,提高Fe2+初始浓度可促进锰的去除。     

Mesoporous yolk-shell structure Bi2MoO6 microspheres with enhanced visible light photocatalytic activity

Mesoporous yolk-shell structure Bi₂MoO₆ (BMO-YS) microspheres were successfully synthesized via a facile solvothermal route in Bi₂MoO₆ precursor solution. The morphology, structure and photocatalytic performance of the BMO-YS in the degradation of Rhodamine B (RhB) were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, nitrogen adsorption–desorption, UV–vis absorption spectroscopy and electrochemical impedance spectra, respectively. The as-prepared BMO-YS mainly consists of microspheres with diameters of about 1.5 μm. The photocatalytic studies reveal that the BMO-YS not only exhibits optimum photocatalytic performance, which may be attributed to the excellent charge separation characteristics and the enhanced light absorption offered by its unique yolk-shell structure, but also possesses excellent recyclability for photocatalysis.     

An Efficient Regeneration System and Optimization of the Transformation from the Cotyledonary Node of Jute (Corchorus capsularis L.)

The purpose of this study was to use cotyledonary nodes as explants to establish an efficient regeneration protocol for jute (Corchorus capsularis L.) on Murashige and Skoog (MS) basal medium. Research into the different growth regulators using the orthogonal design L16 (4⁵) revealed that the best shoot induction medium is MS medium containing 8% (w/v) agar and 3% (w/v) sucrose supplemented with 1.0 mg/L 6BA and 0.25 mg/L NAA. The average number of shoots per explant and the explant induction rate were 9.8 and 100%. After 3 weeks, 2–3 cm shoots were rooting on 1/2 MS medium containing 8% (w/v) agar and 3% (w/v) sucrose supplemented with 1.0 mg/L 6-BA + 0.2 mg/L NAA. Moreover, we optimized Agrobacterium-mediated transformation using the GUS gene transient expression system. The best condition for obtaining higher transformation rate consisted of the use of fresh explants to which 100 μM acetosyringone was added for a co-culture time of 10 min, the OD value of Agrobacterium liquid is 0.5 at 600 nm. These data provide an important basis for the application of other trait gene in the improvement of jute fiber quality.     

Effect of oxygen concentration in gas phase on sporulation and individual ganoderic acids accumulation in liquid static culture of Ganoderma lucidum

Effects of oxygen concentration within 21–100% in gaseous phase on the morphology and ganoderic acids (GAs) production by Ganoderma lucidum in liquid static culture were studied. A higher oxygen concentration increased individual GAs production, and more spores and higher total GA content were obtained at an oxygen level of 80%.     

响应面分析法优化甘薯的抗褐变工艺

利用响应面分析法优化甘薯加工过程抗褐变工艺.在单因素实验基础上,采用Plackett-Burman方法对影响PPO各因素的效应进行评价,筛选出有显著效应的3个因素:热烫温度、Vc、pH.根据中心组合Box-Benhnken实验设计采用3因素水平的响应面分析法,以PPO吸光值为响应值建立二次回归方程,通过响应面分析得到优...