Development of novel nanomaterial-based contrast agents for targeted computed tomography (CT) imaging tumors still remains a great challenge. Here we describe approach to fabricating lactobionic acid (LA)-modified dendrimer-entrapped gold nanoparticles (LA-Au DENPs) in vitro and vivo CT human hepatocellular carcinoma. In this study, amine-terminated poly(amidoamine) dendrimers generation 5 pre-modified with fluorescein isothiocyanate poly(ethylene glycol)-linked LA were employed as templates...

Saccharomonospora viridis is a thermophilic actinomycete that may have biotechnological applications because of its dye decolorizing activity, though the enzymatic oxidative system responsible for this activity remains elusive. Bioinformatic analysis revealed DyP-type peroxidase gene in genome S. DSM 43017 with sequence similarity to from dye-decolorizing microbes. This gene, svidyp, consists 1,215 bp encoding polypeptide 404 amino acids. The SviDyP was cloned, heterologously expressed...

The oxidation of coal to produce high-valued benzene polycarboxylic acids (BPCAs), which are obtained currently from diminishing petroleum reserves, is a promising industrial process the future. Up now, yield distribution BPCAs has not been studied in detail and mechanism remains unclear. In this study, Huolinhe lignite was oxidized batch reactor by alkali-oxygen oxidation. All 12 kinds were quantified new established method. Effects alkali/coal mass ratio, reaction temperature, initial...

As a major environmental heavy metal pollutant, hexavalent chromium (Cr(VI)) causes irreversible damage to animals and humans. Nevertheless, how Cr(VI) exposure intestinal in broilers remains inadequately explored. This study explores Cr(VI)-induced poisoning using potassium dichromate build model. The results indicate that evidently reduced the body weight functions of liver kidney broilers. Histopathological analysis revealed different degrees structural all three segments small intestines...

Thermophilic xylanases with high catalytic efficiency are of great interest in the biofuel, food and feed industries. This study identified a GH11 xylanase gene, Tlxyn11B, Talaromyces leycettanus JCM12802. Recombinant TlXyn11B produced Pichia pastoris is distinguished by specific activity (8259 ± 32 U/mg beechwood xylan as substrate) excellent pH stability (from 1.0 to 10.5). The hydrolysates consisted mainly xylobiose, xylotriose xylotetraose, thus could be used for production prebiotic...

Poly(lactic-<italic>co</italic>-glycolic acid) hollow microcapsules loaded with doxorubicin can be assembled folate-functionalized polyethyleneimine for targeted drug delivery to cancer cells.

The solubility of 5-hydroxymethylfurfural (HMF) in supercritical carbon dioxide (scCO2) with and without ethanol (mole fraction x3 = 0, 0.025, 0.050) as a cosolvent was measured by the cloud point at temperatures from (314.1 to 343.2) K pressures (8.54 19.71) MPa. It is demonstrated that HMF increases increase pressure fixed temperature but decreases pressure. When added into scCO2 cosolvent, greatly mole ethanol. experimental data can be correlated Chrastil model modified four adjustable...

Organogenesis is an important process for plant regeneration by tissue or cell mass differentiation to regenerate a complete plant. MicroRNAs (miRNAs) play essential role in regulating development mediating target genes at transcriptional and post-transcriptional levels, but the diversity of miRNAs their potential roles organogenesis Acacia crassicarpa have rarely been investigated. In this study, approximately 10 million sequence reads were obtained from small RNA library, which 189...

Cellulose is the most widely distributed source of biomass, and its efficient conversion to a variety chemicals important for sustainable future. In this work, sulfur dioxide (SO2) dissolved in hot water has been demonstrated be an catalyst selective cellulose such as glucose levulinic acid. The selectivity products can tuned by SO2 concentration, temperature, reaction time. acts both supply H+ ions through ionization H2SO3 when Lewis acid that breaks hydrogen bonds cellulose. Importantly,...

In the fields of military and civil uses, some special passages exist in many major parts, such as non-linear tubes. The overall performance is usually decided by surface quality. Abrasive flow machining (AFM) technology can effectively improve quality parts. order to discuss mechanism abrasive nonlinear tube, nozzle picked up researching object, self-designed polishing liquid employed make research on key technological parameters linear tube. Technological parameters’ impact parts through...

With the development of electronic measurement and signal processing technology, nonstationary nonlinear characteristics are widely used in fields error diagnosis, system recognition, biomedical instruments. Whether these features can be extracted effectively usually affects performance entire system. Based on above background, research purpose this paper is an improved vibration empirical mode decomposition method. This article introduces a method blasting processing—Differential Empirical...

We report here the fabrication, characterization and use of PLGA hollow microbubbles (HMs) loaded with iron oxide (Fe3O4) nanoparticles (NPs) anticancer drug doxorubicin (DOX) for dual-mode ultrasound (US)/magnetic resonance (MR) imaging delivery applications. In this study, a double emulsion technique was employed to prepare HMs, where hydrophobic superparamagnetic Fe3O4 NPs were encapsulated in shell while DOX molecules incorporated within interior HMs. The formed multifunctional HMs...

A double-layer metal superlens was rigorously analyzed and systematically designed to improve subwavelength imaging ability. It revealed that transmission properties of the system could be accurately interpreted by five-layer waveguide mode theory-each amplification peak among spatial frequency range evanescent waves associated with a corresponding surface plasmon polariton (SPP) an insulator-metal-insulator-metal-insulator (IMIMI) structure. On basis such physical insight, higher were...

The problem of low precision exists in current measurement techniques. This paper introduces the structure and working principle liquid level system laser triangulation carries out a high-precision real-time on-line water surface height variation by using measuring system. displacement its principle, testing characteristics anglicizing reason error.

This paper presents the techniques about microhole abrasive flow machining of crafts through controlling relative motion between workpiece and by speed cylinder piston, improving accuracy efficiency. Abrasive maching motor-driven piston is achieved using computer's information processing ability, changing pulse frequency programm based on Delphi language, direction stepping motor.

ABSTRACT Complementary functions could reliably and effectively estimate actual evaporation receive wide attention in recent years. However, estimating potential (Epo) greatly influences the accuracy of complementary functions. In this study, we compare atmospheric boundary layer model (ABL2021) with Priestly–Taylor (P-T) maximum (YR2019) for Epo. Eighty-six flux sites are utilized to fit parameters three generalized functions, including sigmoid function (H2018), polynomial (B2015),...

The self-designed Abrasive Flow Machine and Clamp are introduced in this paper. technology issues of abrasive flow medium selection process parameters settings discussed. We conducted the experiment on small hole with diameter 0.15 mm. Through experiment, best Machining obtained.

The influences of particle size calcium oxide on copyrolysis products yield Shanxi coal were investigated in the self-developed pyrolysis device. results showed that material had a significant impact process. With decrease size, tar was decreased whereas gas improved, especially, component H2 significantly increased. In this paper, temperature distribution and rate volatile matter escape materials with different sizes also analyzed, effect addition kinetic parameters obtained.

U-type tubes are widely used in military and civilian fields the quality of internal surface their channel often determines merits performance a machine which they incorporated. Abrasive flow polishing is an effective method for improving tube. Using results numerical analysis thermodynamic energy balance equation two-phase solid-liquid flow, we carried out simulations heat transfer processing characteristics abrasive The distribution cloud changes inlet turbulent kinetic energy, turbulence...

Aiming at the problem of ultra-precision polishing bore surface elbow, a new instrument is designed, which suitable for inner hole finishing and placed in cavity work piece, flexible line connecting spherically spraying instrument. And simulation analysis process elbow carried out by ANSYS 11.0 finite element software. It verified that can finish internal achieve purpose roughness reduction.