A5051191617- Fatigue and fracture mechanics
- Microstructure and Mechanical Properties of Steels
- High Temperature Alloys and Creep
- Non-Destructive Testing Techniques
- Crystal structures of chemical compounds
- Concrete and Cement Materials Research
- Hydrogen embrittlement and corrosion behaviors in metals
- High-Velocity Impact and Material Behavior
- Material Properties and Failure Mechanisms
- Recycling and utilization of industrial and municipal waste in materials production
- CO2 Sequestration and Geologic Interactions
- Silicone and Siloxane Chemistry
- Pineapple and bromelain studies
- Clay minerals and soil interactions
- Electromagnetic Scattering and Analysis
- Synthesis of Organic Compounds
- Flame retardant materials and properties
- Structural Health Monitoring Techniques
- Synthesis and biological activity
- Welding Techniques and Residual Stresses
- Optical measurement and interference techniques
- Nuclear materials and radiation effects
- Neurobiology and Insect Physiology Research
- Studies on Chitinases and Chitosanases
- Microwave Dielectric Ceramics Synthesis
Yuntianhua Group (China)
2020-2024
Lanzhou University of Technology
1990-1998
Abstract Piezoelectric ceramics are a kind of electronic ceramic materials with piezoelectric characteristics, which widely used in various fields because their unique electromechanical conversion characteristics. The Curie temperature (TC) and constant (d33) increased to ensure that the have good performance at higher operating temperatures. In this study, (1-x)(K0.5Na0.5)(Nb0.95Ta0.05)O3-x(Bi0.5Na0.5)(Zr0.5Ti0.5)O3 were prepared by traditional solid phase sintering process. By controlling...
A deep understanding of the role Ca in geopolymers exposed to various environments is essential for geopolymerization. This work evaluates by observing behavior hierarchically calciferous under different including air, carbonization and freezing-thawing cycles. The structural morphological differences between related mechanisms environmental conditions are assessed based on compressive strength, brunauer emmett teller, X-ray diffraction, fourier transform infrared spectoscopy, nuclear...
Abstract Four types of toughness were measured over a range temperatures using CVN, COD, 4PB and PCI specimens made low alloy steels weld metals. It was found that there unified correlations in transition among the various parameters which could be realized by dependence yield strengths test materials on both temperature strain rate. The intrinsic reason for attributed to local cleavage conditions, control ductile‐to‐brittle during ductile fracture processes, whether notched or precracked,...
Two alkalis of industrial solid wastes, calcium carbide residue-mirabilite (CCRM), were used as a green combined activator to consolidate phosphorus tailings and soluble well fluorine through the alkaline activation process. The results based on XRD, FTIR, 29Si NMR SEM indicated that most blast furnace slag (BFS) forms gels tailings, silicate hydrate (C-S-H) gel dominated mechanical properties immobilization fluorine. Comparing with classical activators Na2SiO3 NaOH, CCRM activated materials...
Abstract C 30 H 31 N 5 O 6 S 2 , Triclinic, <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <m:mrow> <m:mi>P</m:mi> <m:mover accent="true"> <m:mn>1</m:mn> <m:mo>‾</m:mo> </m:mover> </m:mrow> </m:math> $P\overline{1}$ (no. 2), a = 9.8856(3) Å, b 10.9499(4) c 14.5715(5) α 101.939(1)°, β 92.80(1)°, γ 106.580(1)°, V 1469.21(9) Å 3 Z 2, T 200 K, R gt ( F ) 0.0495, wR ref 0.1538.
Chitin is a critical component of both the exoskeleton and internal structures insects, which can protect insects from mechanical damage, dehydration pathogen infection, plays significant role in molting process. deacetylases (CDAs), key enzymes involved chitin metabolism, are widely distributed among arthropods microorganisms. In this study, we identified
The tomato leafminer ( Tuta absoluta ) is a highly destructive global quarantine pest. methoprene-tolerant (Met) protein, member of the bHLH/PAS family transcription factors, forms complexes with other members to transduce juvenile hormone signal, which regulates insect growth and development. However, functions TaMet gene have rarely been studied in T. . Herein, we investigated significance Spatiotemporal expression analysis revealed that exhibited comparable patterns males females, high...
To deal with the problems encountered in large scale numerical simulation of three dimensional (3D) elastic solids fluid-filled pores, a novel computational model corresponding iterative solution procedure is developed, by introducing Eshelby’s idea eigenstrain and equivalent inclusion into boundary integral equations (BIE). Moreover, partitioning all pores computing domain near- far-field groups according to distances current pore constructing local Eshelby matrix over near-field group,...
Abstract C 8 H 7 N 3 O, orthorhombic, Pccn (no. 56), a = 9.9071(14) Å, b 11.1950(19) c 13.315(2) V 1476.8(4) Å , Z 8, R gt ( F ) 0.0356, wR ref 2 0.1034, T 100(2) K, β 90 ° .
The feasibility and applicability of delamination damages localization methods with various defined damage indexes for the damaged composite laminated beam were studied. results indicate that, modal strain energy method, by difference are more effective to locate than that ratio. For response index second can effectively in beams.
In this study, micro-encapsulated ammonium polyphosphate (MCAPP) products were prepared by using low-quality (APP) flame retardant (n<100) as raw materials and melamine formaldehyde resin coating material. This research used orthogonal test to study the effects of process parameters such addition amount, curing pH value, reaction time dispersant dosage on results, found optimized combination conditions. A quality characterization system was established evaluate MCAPP comprehensively. also...