23 Result(s)
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Article
Effects of endogenous anthocyanins from purple corn on the quality, physicochemical properties and antioxidant capacity of bread
Purple corn is nutritious and contains biologically active ingredients such as anthocyanins and dietary fiber. As a natural green food raw material, it has great potential for development. The existing anthocy...
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Article
Shape demagnetization effect on layered magnetoelectric composites
Magnetoelectric (ME) voltage coefficient of plate layered magnetostrictive-piezoelectric composites was always considered independent of the in-plane size due to the oversimplification in ME theoretical models...
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The mechanism of nucleation of hydrogen blister in metals
The nucleating, growing and cracking of hydrogen blister have been investigated experimentally and theoretically. The results show that atomic hydrogen induces superabundant vacancies in metals. The superabund...
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Article
Construction and identification of reverse genetics system of Dengue type 2 virus isolated in China
To construct infectious full-length cDNA clone of dengue virus type 2 isolated in China (DEN2-43), according to the published nucleotide sequence of the virus strain, the approximately 11 kb full-length cDNAs ...
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Article
Study on delayed cracking of conductive notch under electric field in PZT-5H ferroelectric ceramics
Electric-field-induced delay cracking of conducting notch in PZT-5H ferroelectric ceramics has been studied using a compact specimen with a notch filled in conductive silver paste. The critical electric field ...
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Investigation on propagation process of electrically induced fatigue cracking using AFM
Propagation process of electrically induced fatigue cracking in BaTiO3 single crystal has been studied using atomic force microscope (AFM). The results show that alternating electric field generates a random doma...
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Article
Initiating, growing and cracking of hydrogen blisters
The growing process of a hydrogen blister in a wheel steel was observed in situ with an optical microscope, and the fracture surfaces formed from broken blisters on a wheel steel and bulk metallic glass were inve...
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Article
Hydrogen-induced cracking and its anisotropy of a PZT ferroelectric ceramics
Threshold stress intensity factor of hydrogen-induced cracking (HIC), K IH, of a lead zirconate titanate ferroelectric ceramics (PZT-5) has been measured during dynamic charging with vario...
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Article
Stress corrosion cracking and its anisotropy of a PZT ferroelectric ceramics
Stress corrosion cracking (SCC) of a PZT ferroelectric ceramics in various media, such as moist atmosphere, silicon oil, methanol, water and formamide, and its anisotropy have been investigated at constant loa...
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Article
Investigation of stress corrosion-enhanced plastic deformation using atomic force microscope
Atomic force microscope (AFM) was used to studyin situ the change in slip bands during stress corrosion of brass in the ammonia solution prior to initiation of stress corrosion crack. The result showed that addit...
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Article
Investigation of stress corresion cracking under anodic dissolution control
This review is about stress corrosion cracking (SCC) under anodic dissolution control. The section 1 is the methods distinguishing SCC controlled by anodic dissolution from those by hydrogen. The section 2 pre...
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Article
Thinning procedures and strains in the zones near crack tips of thin foils
Thinning procedures were observed by TEM in 310 stainless steel and pure aluminum. Foils thinned through shearing of mode III crack or through tearing of mode I crack. Using micro-beam electron diffraction, th...
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Article
Fracture mechanism of TiAl intermetallics caused by hydride and atomic hydrogen
Hydrogen embrittlement (HE) of TiAl intermetallics was studied at room temperature. The results showed that there were two forms of HE in TiAl intermetallics, i.e. hydride HE and atomic HE. Most of hydrogen in...
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Article
Liquid metal embrittlement mechanism
Liquid metal embrittlement was studied in the following two aspects. First the first principle and Chen-Nanxian three-dimensional lattice reverse method were employed to obtain the effective potentials for Al-...
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Article
Failure modes after exhaustion of dislocation glide ability in thin crystals
The changes of microstructures after the exhaustion of dislocation glide ability but before cracking, as well as microcrack initiation by them, were studied in detail byin-situ transmission electron microscopy (T...
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Article
Hydrogen-induced cracking by nanovoids in 310 stainless steel
Hydrogen-induced cracking was investigated by TEMin-situ tension in hydrogenated stainless steel of type 310. It was found experimentally that hydrogen-induced cracking happens via nanovoid nucleation followed by...
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Article
Investigation of atomic structure ahead of crack tip by STM and AFM
The nanostructure and atomic structure ahead of the crack tip of highly oriented pyrolytic graphite has been studied by using scanning tunneling microscopy (STM) and that of mica by using atomic force microsco...
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Article
Molecular dynamics simulation of hydrogen enhancing dislocation emission
The interactive pair potential between Al and H is obtained based on theab initio calculation and the Chen-Möbius 3D lattice inversion formula. By utilizing the pair potentials calculated, the effects of hydrogen...
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Article
Chemisorption-facilitated dislocation emission and motion, and induced nucleation of brittle nanocrack
Using a special TEM constant deflection device, the change in dislocation configuration ahead of a loaded crack tip before and after adsorption of Hg atoms and the initiation of liquid metal-induced nanocracks...
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Article
In situ TEM observation of magnetization-enhanced dislocation emission and motion for 60Fe40Ni alloy
The magnetization for Fe40Ni alloy in the magnetic field can enhance dislocation emission, multiplication and motion.
