Bioplastics (BPs) prepared from lignocellulose are an excellent replacement for petrochemical-plastics (PCPs) due to their renewability and biodegradability. The presence of residual/added/regenerated lignin reduced the water sensitivity; however, these BPs possessed a deep color low transmittance were prone photodegradation. Herein, we developed UV- water-insensitive, colorless, transparent, sustainable wood-derived BP (W-BP) by pressing delignified wood (DW) with 0.21% abundant hydrophobic...

Bending and buckling behavior of graphene origami(GOri) metamaterial irregular plates (octagonal star plates, cordiform a quarter annular with hole) under different boundary conditions are investigated based on the higher-order shear deformation theory. The by adding GOri to copper matrix in form gradient arrangement as reinforcement material has properties negative Poisson's ratio (NPR) compressive, flexural well fracture toughness beyond traditional materials that independent...

With technological improvement such as ore exploration, robotics, and hydrodynamic lifting, deep-sea mining has attracted more attention from governments, companies, scientific research institutions. Although its development made great progress, there are still many obstacles in industrial development, environmental pollution sustainability issues. This article analyses the status of sustainable an overall perspective. Through a literature review, this paper also discusses application full...

Tillage modes and straw returning influence soil aggregate stability the distribution of organic carbon (C) nitrogen (N) in aggregates different particle sizes. In typical hilly regions southwest China, predominant type is purple soil, characterized by heavy texture high stickiness, with relatively lower fertility compared to other types. The improper use fertilizers field management practices further exacerbates compaction. However, abundant resources region provide an opportunity for...

Abstract A series of Yb 3+ , Er and Eu doped Ba 2 GdF 7 spheroidal nanoparticles are prepared by hydrothermal procedure. Upconversion (UC) downconversion (DC) dual‐mode luminescence obtained in ‐Er ‐Eu tri‐doped energy transfer processes investigated detail. Under 980 nm near‐infrared (NIR) excitation, the UC photoluminescence : is dominated intense green (521& 540 nm, H 11/2 / 4 S 3/2 → I 15/2 ) red emission (651 F 9/2 from due to efficient (ET) continuous ET leads weak (591 5 D 0 1 )....

Fertilization plays a crucial role in enhancing tea production. However, it has been demonstrated that the long-term single application of chemical fertilizer will reduce soil nutrient content and formation aggregates, which is not conducive to sustainable development agriculture. Many studies have shown partial substitution with organic can improve physicochemical properties content. This study compared effects different materials as substitutes for fertilizer. We partially replaced rabbit...

The design, fabrication and test of a novel MEMS inclinometer were described. This was based on the piezoresistive detection method, fabricated by SOI process. micro-structure four vertical cantilever beams, center mass with rigid cylinder fixed it. piezoresistors beams used to detect deformation cantilevers caused gravity. A system designed in this paper, from results we found that had sensitivity 0.025 mV/°, theoretical are well agreement, standard deviation is 0.43874.

In order to enhance the adhesions of UV-curable inks onto glass substrate, silane coupling agents were added into mixture monomer and oligomer. The monomer, containing high functionality or surface tension could lead a cross-link density polymeric network low inks. With amount ethyoxyls ethoxylated trimethylolpropane triacrylate increasing, oligomers improved. As concentration increased, adhesion ability ink was decreased. increased via adding agents. When more than 12%, Silane...

Despite the promise of stem cell engineering and new advances in bioprinting technologies, one major challenges manufacturing large scale bone tissue scaffolds is inability to perfuse nutrients throughout thick constructs. Here, we report a scalable method create thick, perfusable constructs using combination cell-laden hydrogels 3D printed sacrificial polymer. Osteoblast-like Saos-2 cells were encapsulated within gelatin methacrylate (GelMA) hydrogel polyvinyl alcohol pipes used channels. A...

Abstract Hyperbranched poly(citrate glyceride)s (HBPETs) as plasticizers were mixed with maize starch (S) via cooking and film formation. The structure, aging properties, hydrophilicity of the plasticized starches studied by means Fourier transform infrared spectroscopy, X‐ray diffraction, tension testing, contact angle solubility measurements, moisture absorption, water vapor permeability (WVP). Compared a glycerol–S film, HBPET–S composite films had better mechanical properties in terms...

Based on domain decomposition, a semi-analytical method (SAM) is applied to analyze the free vibration of double-curved shells revolution with general curvature radius made from graphene nanoplatelet (GPL)-reinforced porous composites. The mechanical properties GPL-reinforced composition are assessed Halpin–Tsai model. double-curvature shell broken down into segments along its axis in accordance first-order shear deformation theory (FSDT) and multi-segment partitioning technique, derive...

In this work, we report on a perfusion-based co-culture system that could be used for bone tissue engineering applications. The model is created using combination of Primary Human Umbilical Vein Endothelial Cells (HUVECs) and osteoblast-like Saos-2 cells encapsulated within Gelatin Methacrylate (GelMA)-collagen hydrogel blend contained 3D printed, perfusable constructs. constructs contain dual channels, custom-built bioreactor, were perfused with osteogenic media up to two weeks in order...

Satellite image parcel segmentation is a specific task of satellite interpretation. Good results can provide guidance for environmental protection, agricultural production and town construction. In this paper, U-Net convolution neural network model based on Tensorflow framework built. During the training process, data enhancement strategy specially designed task, so as to enhance generalization ability model. The experimental select intersection ratio (Iou), recall rate (Recall), Kappa...

Purpose – The purpose of this paper is to prepare waterborne UV-curable pigment pastes for cotton fabric printing. Design/methodology/approach O/W (oligomer-in-water) emulsions polyurethane acrylate (PUA) oligomer in sodium dodecyl benzene sulphonate (SDBS) aqueous solution were prepared by ultrasonic emulsification method. Findings present work studies various factors affecting the stability and droplet size emulsion stabilised SDBS. optimal emulsifier concentration was 2.5 per cent, under...