Diatom Frustules Decorated with Co Nanoparticles for the Advanced Anode of Li-Ion Batteries.

Silica is regarded as a promising anode material for lithium-ion batteries (LIBs) because of its high theoretical capacity. However, large volume variation and poor electrical conductivity are limiting factors for the development of SiO anode materials. To solve this problem, combining SiO with a conductive phase and designing hollow porous structures are effective ways.

Biosynthesis and Detection of Domoic Acid from Diatom : A Review.

The domoic acid (DA) produced by certain species of the marine pennate diatom genus Pseudo-nitzschia is highly neurotoxic and can induce nerve excitability and neurotoxicity by binding with ionotropic glutamate receptors, causing amnesic shellfish poisoning in humans who consume seafood contaminated with DA. In recent years, poisoning of humans caused by DA has occurred around the world, which has attracted increasing attention, and studies on DA production by Pseudo-nitzschia have become the hotpot. This article reviews the progress in the biosynthesis of DA by the typical diatom Pseudo-nitzschia, in which the metabolic pathway of the biosynthesis of DA and its precursors, i.

Enhancement Mechanism of Stibnite Dissolution Mediated by under Extremely Acidic Condition.

Oxidative dissolution of stibnite (SbS), one of the most prevalent geochemical processes for antimony (Sb) release, can be promoted by Sb-oxidizing microbes, which were studied under alkaline and neutral conditions but rarely under acidic conditions. This work is dedicated to unraveling the enhancement mechanism of stibnite dissolution by typical acidophile under extremely acidic conditions. The results of solution behavior showed that the dissolution of SbS was significantly enhanced by , with lower pH and higher redox potential values and higher [Sb(III)] and [Sb(V)] than the sterile control.

Correlation Between Fe/S/As Speciation Transformation and Depth Distribution of and in Simulated Acidic Water Column.

It is well known that speciation transformations of As(III) vs. As(V) in acid mine drainage (AMD) are mainly driven by microbially mediated redox reactions of Fe and S. However, these processes are rarely investigated.

The differential inhibitive effects and fates of As(III) and As(V) mediated by Sulfobacillus thermosulfidooxidans grown on S, Fe and FeS.

Arsenic often coexists with metal sulfide minerals and occurs in different speciation and different toxicity in responding to Fe/S biooxidation. The differential inhibitive effects and fates of As(III) and As(V) during biooxidations of elemental sulfur (S), ferrous ions (Fe) and pyrite (FeS) by Sulfobacillus thermosulfidooxidans were studied. The results revealed that the arsenic species hardly changed for the biooxidation of S, but dramatically changed for the biooxidation of Fe and FeS.

Humic acid promotes arsenopyrite bio-oxidation and arsenic immobilization.

The bio-oxidative dissolution of arsenopyrite, the most severe arsenic contamination source, can be mediated by organic substances, but pertinent studies on this subject are scarce. In this study, the bio-oxidative dissolution of arsenopyrite by Sulfobacillus thermosulfidooxidans and arsenic immobilization were evaluated in the presence of humic acid (HA). The mineral dissolution was monitored through analyses of the parameters in solution, phase and element speciation transformations on the mineral surface, and arsenic immobilization on the surfaces of cells and jarosites-HA.

Influence of light intensity and water content of medium on total dendrobine of Dendrobium nobile Lindl.

Objective: To ascertain the influence of light intensity and water content of medium on the total dendrobine of Dendrobium nobile (D. nobile).

Method: The principal component analysis combined with total dendrobine accumulation was conducted to assess the yield and quality of D.

[Metabolic pathway of flavonoids in Blumea balsamifera].

To better understand the biosynthetic pathway of flavonoids in Blumea balsamifera, and to increase the biosynthesis of flavone and flavonol amount, we carried out this research. Basing on transcriptome information, B. balsamifera flavonoids metabolic pathway was analyzed in KEGG data base.

A Randomized Multicenter Clinical Trial of RPH With the Simplified Milligan-Morgan Hemorrhoidectomy in the Treatment of Mixed Hemorrhoids.

Purpose: To explore the safety and efficacy of Ruiyun procedure for hemorrhoids (RPH) or RPH with the simplified Milligan-Morgan hemorrhoidectomy (sMMH) in the treatment of mixed hemorrhoids.

Methods: This is a randomized, controlled, balanced, multicenter study of 3000 patients with mixed hemorrhoids. The outcomes and postoperative complications were compared between 5 types of surgeries.

Complete Genome Sequence of the Extremely Thermoacidophilic Archaeon YN-25.

The complete genome of YN-25 consists of a chromosome of 2,687,463 bp, with a G+C content of 30.62% and 2,746 coding DNA sequences. This archaeon contains a series of specific genes involved in the oxidation of elemental sulfur and reduced inorganic sulfur compounds.

[Treatment of Mixed Hemorrhoids by RPH with the Simplified Milligan-Morgan Surgery: a Multi-center, Randomized, Controlled Clinical Trial].

Objective To observe the safety and efficacy of RPH with the simplified. Milligan-Mor- gan(M-M) surgery on mixed hemorrhoids. Methods Totally 1 200 patients with mixed hemorrhoid were assigned to the control group(600 cases) and the treatment group(600 cases) according to randomized, parallel controlled,multi-center trial design.

[Analysis of metabolic pathway of terpenoids in Blumea balsamifera].

In order to provide a theoretical basis for the regulation of active ingredient, the terpenoids metabolic pathway and specific enzymes in Blumea balsamifera are investigated. Basing on transcriptome information, B. balsamifera terpenoids metabolic pathway was analyzed in KEGG data base.

[Effect of Plant Density and Harvest on Yield and Quality in Blumea balsamifera].

Objective: To study the effects of different plant density and harvest time on the yield and quality of Miao medicine Blumea balsamifera, in order to provide a theoretical basis for Good Agriculture Practice( GAP).

Methods: Two factors trails were used to research the influence of plant density and harvest time on the yield and quality of Blumea balsamifera. The plant density were located at 50 cm × 90 cm,50 cm × 60 cm,50 cm × 30 cm and 30 cm × 30 cm, and the harvest time were set up at mid-October, mid-November and mid-December.

[Effects of Different Planting Direction and Layer Combination on Gastrodia elata f. elata in Bionic Wild Cultivation].

Objective: Combination of different planting direction and layer were set to choose the best technology of cultivation of Gastrodia elata f. elata.

Methods: To improve the yield and quality of Gastrodia elata f.

Evidence of cell surface iron speciation of acidophilic iron-oxidizing microorganisms in indirect bioleaching process.

While indirect model has been widely accepted in bioleaching, but the evidence of cell surface iron speciation has not been reported. In the present work the iron speciation on the cell surfaces of four typically acidophilic iron-oxidizing microorganism (mesophilic Acidithiobacillus ferrooxidans ATCC 23270, moderately thermophilic Leptospirillum ferriphilum YSK and Sulfobacillus thermosulfidooxidans St, and extremely thermophilic Acidianus manzaensis YN25) grown on different energy substrates (chalcopyrite, pyrite, ferrous sulfate and elemental sulfur (S(0))) were studied in situ firstly by using synchrotron-based micro- X-ray fluorescence analysis and X-ray absorption near-edge structure spectroscopy. Results showed that the cells grown on iron-containing substrates had apparently higher surface iron content than the cells grown on S(0).

Transcriptome changes in Polygonum multiflorum Thunb. roots induced by methyl jasmonate.

Transcriptome profiling has been widely used to analyze transcriptomic variation in plants subjected to abiotic or biotic stresses. Although gene expression changes induced by methyl jasmonate (MeJA) have been profiled in several plant species, no information is available on the MeJA-triggered transcriptome response of Polygonum multiflorum Thunb., a species with highly valuable medicinal properties.

[Content of mineral elements of Gastrodia elata by principal components analysis].

Objective: To study the content of mineral elements and the principal components in Gastrodia elata.

Method: Mineral elements were determined by ICP and the data was analyzed by SPSS.

Result: K element has the highest content-and the average content was 15.

Differential expression of extracellular thiol groups of moderately thermophilic Sulfobacillus thermosulfidooxidans and extremely thermophilic Acidianus manzaensis grown on S(0) and Fe (2.).

Bio-oxidation of elemental sulfur (S(0)) is very important in bioleaching and sulfur cycle. S(0) was proposed to be first activated by reacting with reactive thiol groups (-SH) of outer membrane proteins, forming -S n H (n ≥ 2) complexes. The differential expression of -SH of moderately thermophilic Sulfobacillus thermosulfidooxidans and extremely thermophilic Acidianus manzaensis grown on Fe(2+) and S(0) was investigated by synchrotron radiation-based scanning transmission X-ray microscopy (STXM) imaging and micro-beam X-ray fluorescence (μ-XRF) mapping.

Differential utilization and transformation of sulfur allotropes, μ-S and α-S8, by moderate thermoacidophile Sulfobacillus thermosulfidooxidans.

The utilization of amorphous μ-S and orthorhombic α-S8 by thermoacidophile Sulfobacillus thermosulfidooxidans was firstly investigated in terms of cell growth and sulfur oxidation behavior. The morphology and surface sulfur speciation transformation were evaluated by using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), Raman spectroscopy and sulfur K-edge X-ray absorption near edge structure (XANES) spectroscopy. The results showed that the strain grown on μ-S entered slower (about 1 day later) into the exponential phase, while grew faster in exponential phase and attained higher maximal cell density and lower pH than on α-S8.

First stage zoeal morphology of four ghost crabs Ocypode ceratophthalmus (Pallas, 1772), O. cordimanus Latreille, 1818, O. sinensis Dai, Song & Yang, 1985 and O. stimpsoni Ortmann, 1897 (Crustacea, Decapoda, Ocypodidae).

Light and scanning electron microscopy (SEM) were used to examine the first zoeal stage of four ghost crabs, Ocypode ceratophthalmus (Pallas, 1772), O. cordimanus Latreille, 1818, O. sinensis Dai, Song & Yang, 1985 and O.

Novel shikonin derivatives targeting tubulin as anticancer agents.

In this study, we report the identification of a new shikonin-phenoxyacetic acid derivative, as an inhibitor of tubulin. A series of compounds were prepared; among them, compound 16 [(R)-1-(5,8-dihydroxy-1,4-dioxo-1,4-dihydronaphthalen-2-yl)-4-methylpent-3-enyl 2-(4- phenoxyphenyl) acetate] potently inhibited the function of microtubules, inducing cell growth inhibition, apoptosis of cancer cell lines in a concentration and time-dependent manner. Molecular docking involving 16 at the vinblastine binding site of tubulin indicated that a phenoxy moiety interacted with tubulin via hydrogen bonding with asparaginate (Asn) and tyrosine (Tyr).

The relationship between frequency dependence of action potential duration and the expression of TRPC3 in rabbit ventricular myocardium.

Background/aims: Cardiac action potential duration (APD) is regulated by heart rate, leading to the trans-membrane movement of inorganic ions. Whether the alteration of heart rate can affect the expression of transient receptor potential canonical channels (TRPCs), further studies should be made. We investigated the changes of APD at different stimulus frequencies and their influences on the expression of TRPCs in rabbit ventricular myocardium.

[Habitat survey and biological characteristics study of Polygonum multiflorum germplasms in Guizhou region].

Objective: To provide reference in selecting premium provenance and improve the cultivation techniques of Polygonum multiflorum.

Methods: Field survey, routine field-observation and sampling fixed plant for analysis in lab were adopted.

Results: The growing adaptability of Polygonum multiflorum was very strong, which growed flourishly in the condition with adequate light, ample rainfall, rich heat and fertile soil; Along with the lower of latitude, the vegetative period was prolonged and reproductive stage was delayed, which prolonged the time of roots' nutrition acquisition.