To accelerate the high value-added usage of agricultural residue, cellulose and nanofibers (CNFs) were extracted from wheat straw then formed into all-cellulose nanocomposite films. The acid-alkali method (AM) extraction (EM) respectively adopted to prepare (WSC), TEMPO oxidation was used extract CNFs. films fabricated by dissolving WSC adding different CNF contents 0.0, 0.5, 1.5, 3.0%. There a better miscibility for film prepared EM (Composite-E) compared that AM (Composite-A). Composite-E...

In this paper, an alumina ink with good rheological properties was successfully prepared using pseudoboehmite as the main component, nitric acid colloidal solvent, and sesbania powder lubricant. The impact of nine different formulations, namely, Ink1 to Ink9, on printability features investigated. Consequently, it found that Ink3 5 wt % exhibited most favorable formability. This utilized fabricate samples direct writing (DIW) three-dimensional (3D) printing technology. printed were...

Targeting mitochondria via nano platform emerged as an attractive anti-tumor pathway due to the central regulation role in cellar apoptosis and drug resistance. Here, a mitochondria-targeting nanoparticle (TOS-PDA-PEG-TPP) was designed precisely deliver polydopamine (PDA) photothermal agent alpha-tocopherol succinate (α-TOS) chemotherapeutic of tumor cells, which inhibits growth through chemo- photothermal- synergistic therapies. TOS-PDA-PEG-TPP constructed by coating PDA on surface TOS NPs...

Abstract BACKGROUND There is a need to help farmers and industries develop value‐added composite nanocomposite materials from agricultural residuals. Cellulose nanofibers (CNFs) were made using TEMPO oxidation method celluloses prepared by acid–base extracting method, which all corn stalk, an residual. The dissolved separately in dimethylacetamide/LiCl solvent CNFs added at 0.0%, 0.5%, 1.5% 3.0% form all‐cellulose nanocomposites, then cast into films. Morphology, structure properties of the...

Predicting and estimating the response of subway tunnel to adjacent excavation foundation pit is a research focus in field underground engineering. Based on principle two-stage method incremental method, an analytic approach suggested this paper solve problem accurate rapid way, upheavals due are solved by method. Besides, presented used practical engineering case Shenzhen Metro Line 11 verified numerical simulation situ measurement. Finally, parametric analysis performed investigate...

The quality of an apple is influenced by static pressures during transport and storage. In this study, apples were subjected to different using a universal testing machine, then the dielectric parameters measured after storage durations (22 ± 1°C, 35–40% relative humidity). results showed that firmness vitamin C content decreased total soluble solid (TSS) content, titratable acidity (TA), solid/titratable (TSS/TA) exhibited decreasing–increasing–decreasing trend as time increased. A...

In order to relieve the increasing ground traffic pressure in process of urbanization China, it is inevitable build more metro lines. However, stratum movement caused by tunneling affects safety adjacent underground structures and aboveground buildings. Therefore, how evaluate control a prominent problem. this paper, based on engineering project an interval tunnel between Shizishan Station Chuanshi Chengdu Metro Line 7, action mechanism induced shield analyzed, effect factors are divided...

In this study, polyethylene glycol (PEG) and dextran (Dex) were chemically modified to obtain amino-functionalized PEG (PEG-(NH2)2) oxidized (ODex). They subsequently reacted via -NH2 -CHO groups synthesize a macromolecular Schiff base particle. The structures, morphologies, thermal properties of the particle characterized using Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), thermogravimetry analysis (TGA). was then employed as stabilizer stabilize...

Shield tunneling is becoming the preferred construction scheme for metro because of its advantages fast speed and small disturbance. However, limited by process defects, stratum movements induced shield tunnels still affects safety nearby underground structures aboveground buildings. Therefore, reliable prediction important. Described in this paper an analysis method Greenfield (Greenfield area land that has not yet had buildings on it, means movement various soil layers) caused tunnel...

Abstract Direct‐ink writing (DIW) 3D printing technology has the advantages of simple process and high efficiency, enables molding materials at room temperature. These characteristics make DIW widely applicable in field monolithic molding. In this study, a composite slurry SiO 2 polyethyleneimine (PEI) was molded using direct‐ink technology. Fourier transform infrared spectroscopy, x‐ray diffraction, thermogravimetric were used to analyze structure thermal composites. Additionally, study...

In order to meet the construction schedule, operation ventilation, escape and rescue requirements, a large number of auxiliary need be set up in extra-long highway tunnels, design parameters vertical shaft, inclined shaft parallel heading, cross passage are analyzed by investigation on tunnels. The results show that heading is usually adopted tunnel with single hole two-way driving which it can used as main during period ventilation well period. generally divided into 2 sections passages 3~5...

Cellulose solution and nanocellulose were prepared from corn straw wheat then used to fabricate an all-cellulose nanocomposites film (ANF). The crystal structure (CS) of ANFs was analyzed by X-ray diffraction (XRD) Fourier transform infrared spectrometry (FTIR). Cellulose-I cellulose-II found coexist within regenerated cellulose films (RCF) ANFs. With the change content, proportions cellulose-I changed. transformation depend on raw material preparation method. When that had been extracted,...

To detect the plant hormone ethylene, three arylolefins were employed to react with ethylene based on olefin metathesis. In this study, fluorescence probes successfully prepared using a first-generation Grubbs catalyst (G-1) and arylolefin terminal vinyl groups. The characterized various techniques, including UV–vis, fluorescence, FT-IR, 1H NMR, 13C 31P NMR spectroscopies HRMS. exhibited an emission maximum at 394 nm showed excellent response. detection limits for calculated be 0.128, 0.074,...

With the advantages of fast construction speed and small disturbance to stratum, shield tunneling is becoming preferred scheme for metro construction. However, if stratum cannot be clearly understood, it will affect safety adjacent underground structures aboveground buildings. Based on interval tunnel between Shizishan station Chuanshi Chengdu line 7 project, this paper proposed a simplified calculation method analyze impact excavation pile foundation. A two‐stage modified Peck formula...

Based on the research of Engineering geological characteristics，formation mechanism，failure mode and later change trend Zigui county Bazimen landslide in Three gorges reservoir area,we put forward warning construction scheme monitoring, introduce layout monitoring network technical requirements all kinds deformation monitoring,it can be refered to by other projects.

Our country is one of the countries that with serious geological disasters,every year we loss nearly twenty billion yuan and hundreds people dead because it.How to liberate deformation monitoring from traditional way by means modern Synthetic Aperture Radar Interferometry (InSAR) responsibility each technical workers. In this paper, mainly introduce recent fast-developed advanced InSAR technology -- Persistent Scatterers for SAR Interfero try PS its application on Shuping landslide in Three...

Abstract The characteristics of instability have been investigated on two low nickel austenite stainless steel at the temperatures 950–1200 °C through uniaxial tensile test and unload test. results show geometrical is not concurrent with load in high temperature tensile. deformation specimens are uniform before instability, then appear non-uniform some local area specimen but they do directly lead to geometric instability. With increase temperature, strain hardening exponent n both no...

In this paper, the excavation work of deep foundation pit for Qingdao subway is proposed. By construction numerical analysis, characteristics internal force bracing system and soil horizontal displacement are obtained. Through these analyses, law in ambient obtained, measures considering factors can be adopted support structure design controlling.

Rainfall infiltration and reservoir water level fluctuation are major factors inducing slope deformation. Taking nearly three years data of Bazimen landslide in the Three Gorges Reservoir area basing on mathematical regression analysis method, a relationship among deformation, rainfall is established. And then most adverse condition under superposi¬tion obtained.

Abstract The cellulose and nanocellulose which was extracted from corn straw wheat used to fabricate all-cellulose nanocomposites film (ANF). crystal structure (CS) of ANFs analyzed by X-ray diffraction (XRD) Fourier transform infrared spectrometry (FTIR). result shows that cellulose-I cellulose-II are coexisting within regenerated films (RCF) can transfer each other with the change content. characteristics transformation depend on raw material preparing method cellulose. When is prepared...