Materials Literature
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Removal of the carbon template from WS2-coated multi-walled carbon nanotube (MWCN) composites, produced WS2 nanotubes with intriguing microstructures. TEM characterisation shows that the intermediate phases of amorphous WO3−x-WS2 nanostructures, support the previously proposed growth model for WS2 nanotubes on MWCNs.
To solve a recent technical problem relating to larger-size wafer production and thinner packaging technology, a new photodefinable polyimide, which can give smaller wafer bow (curvature) after curing and also can attain finer pattern performance, is designed based on xanthene-structure dianhydride. This paper describ…
We constructed a hybrid piston cylinder-type high-pressure cell using a homemade NiCrAl alloy. It was designed as a hydrostatic pressure cell; 67 mm in length with an outer diameter of 25 mm to be used with a dilution refrigerator. We have succeeded in the resistivity measurement under hydrostatic pressure up to about…
S-sulfokeratein is prepared through S-sulfonation after the cleavage of disulfide bonds in keratin using ditiothreitol in urea. S-sulfokeratein is composed of two fractions, matrix and microfibril components, and S-sulfokeratein from the matrix component (Bs) can regenerate disulfide bonds. In this study, the effects…
To delineate the effect of Radiation Induced Surface Activity (RISA) on boiling phenomenon, surface wettability in high-temperature environment or Leidenfrost condition and critical heat flux (CHF) of oxide metals irradiated by gamma rays were investigated. When the temperature of the heating surface reaches the wetti…
Crossing of 38 clones of Nitzschia longissima (Breb.) Ralfs (Bacillariophyta) isolated from the coastal zone of the Black Sea near Karadag (Crimea) was carried out under laboratory conditions. This species is widely distributed in seas and oceans. It was shown that sexual heterogeneity is characteristic of the studied…
An air jet loom equipped with a profile reed and sub-nozzles is able to weave wider fabrics at higher speed than other types. A study on the characteristics of airflow and behavior of the weft yam in the weft passage area of the profile reed during inserting the weft yam is very important. The velocity distributions o…
A simple model of hydrogen diffusion and hydride precipitation was developed to estimate the radial re-distribution of hydrogen in zirconium-lined Zircaloy-2 claddings for light water reactors. Numerical calculation based on the model agreed well with experimental data and clearly showed that a slight difference of th…
In this paper, a computational simulation study is presented on the prediction of helium bubble evolution during repair welding of irradiated 304 stainless steel. Realistic spatial and temporal temperature and stress evolution during welding were obtained from simulation of the repair welding operation using the finit…
Optical second harmonic generation in Polyazomethine ether has been observed experimentally. The complete syntheses as well as the spectral analyses are made to establish the physical properties of polyazomethine ether as a stable polymer. Experimental studies using a nanosecond pulse Q-switched 1.06 ; m Nd:YAG laser…
The mechanical and dielectric properties of styrene butadiene rubber (SBR) reinforced with polyester (PE) short-fiber loaded with high abrasion furnace (HAF) carbon black in concentrations up to 60 phr have been investigated. The effect of ageing on these properties was also studied. It was found that the tensile stre…
Polymer-polymer interactions, such as hydrophobic and electrostatic interactions, were introduced into covalently crosslinked composite matrices consisting of an anionic polysaccharide, hyaluronic acid (HyA) and a cationic polypeptide, type II collagen. The matrices were covalently crosslinked using a water soluble ca…
The sensitization of Eu(III) and Tb(III) by ethylenediaminetetraaceticacid (EDTA)-derivatized tryptophan (Trp), 7-azatryptophan (7AW) and 5-hydroxytryptophan (5HW) has been examined. These Trp analogs were utilized in the present study because they can be incorporated into proteins in place of native Trp residues and…
Transpassive Dissolution Mechanism of Ni-Based Alloys in a Simulated Bleaching Solution : Effect of Alloying Elements , Betova, Iva, Bojinov, Martin, Kinnunen, Petri, Laitinen, Timo, Pohjanne, Pekka, Saario, Timo, Vilpas, Martti
Pneumatics holder which supports all pneumatics components requires high tolerance in dimension.Therefore, perfect design process which means accurate process parameter selection will enable us to produce as cast holder as required.This experimental study is to produce pneumatics holder by combining several process pa…
One of the most obvious disadvantages with a reciprocating Active Magnetic Regenerative (AMR) refrigerator is the production of large unbalanced forces. Typical reciprocating AMR geometries use a single super-conducting solenoid with two AMR beds moving along the solenoid axis and spaced some distance apart. In this c…
It is expected that in the new century, to cope with developments of new high temperature technologies, a new generation of high performance refractory ceramics will emerge and flourish which should include the following (1) oxide and nonoxide composites characterized by a unique combination of high hot strength, high…
Scale and Naphthenate Inhibition in Deep-Offshore Fields Alexandre Goldszal; Alexandre Goldszal Total Fina Elf Search for other works by this author on: This Site Google Scholar Christian Hurtevent; Christian Hurtevent Total Fina Elf Search for other works by this author on: This Site Google Scholar Guy Rousseau Guy R…
Abstract The reaction of 1,4‐naphthoquinone ( 1 ) with 2,5‐dimethylpyrroles ( 7a‐7d ) gives only 3‐(1,4‐naphtho‐quinonyl)‐2,5‐dimethylpyrroles. Extending the reaction to other quinones: 5‐hydroxy‐1,4‐naphthoquinone ( 2 ), 1,2‐naphthoquinone ( 3 ), quinoline‐5,8‐dione ( 4 ) and quinoxaline‐5,8‐dione ( 5 ), of which not…
通过物理实验和数值模拟,研究双轴作用下不同几何分布和不同围压的断续预置三裂纹的萌生、扩展和贯通机制。结果清楚显示裂纹贯通机制主要受加载条件与预置裂纹几何分布的影响。在双轴加载条件下,裂纹贯通的模式包括拉贯通、剪贯通、压贯通和混合贯通。拉裂纹在双轴加载下, 其扩展速度减慢或停止,且在岩桥间出现剪裂纹,从而形成混合贯通或剪贯通。压裂纹是在侧压下产生的次生裂纹,其贯通受制于两非共线的重叠裂纹间的岩距。当1<b/c<1.8(岩距与裂纹长度的比值为b/c)时,则压裂纹最为活跃,否则压裂纹较难生长。双轴作用下,三裂纹在峰值附近有两组贯通裂纹,在单轴情况则通常只发生一组贯通裂纹。此外,随着压力增加,预置裂纹间更加闭合,导致预置裂纹的…