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41.
S. B. Teoh C. E. Seng K. Y. Liew 《Journal of the American Oil Chemists' Society》1995,72(10):1227-1229
The densities ofn-alkyl chlorides from pentyl chloride to hexadecyl chloride were determined at temperatures between 15–80°C at 5°C intervals.
The densities increase linearly with temperature and chainlength. A four-constant equation, V=n/(−3.6640 × 10−5 T+0.07151)+1/(−5.6526 × 10−5 T+0.04243), was formulated. This formula accurately predicted the molal volume and, hence, the density for all then-alkyl chlorides at any temperature within the range. 相似文献
42.
43.
Shyi‐Liang Shyu Lung‐Bin Hau Lucy Sun Hwang 《Journal of the science of food and agriculture》2005,85(11):1903-1908
The effects of pretreatment and vacuum frying conditions on the quality of fried carrot chips were studied. The moisture and oil contents of fried carrot chips were significantly (p < 0.05) reduced when blanched carrot slices were pretreated by immersion in fructose solution and freezing prior to vacuum frying. Furthermore, more uniform porosity was observed on the vertical cross‐section of carrot chips when examined by scanning electron microscopy. During vacuum frying, the moisture content, colour and breaking force of carrot chips decreased while the oil content increased with increasing frying temperature and time. However, there was no apparent change in Hunter ΔE with time when the frying temperature was below 100 °C and the frying time was below 25 min. Results of this study suggest that vacuum frying at moderate temperature (90–100 °C) for 20 min can produce carrot chips with lower moisture and oil contents as well as good colour and crispy texture. Copyright © 2005 Society of Chemical Industry 相似文献
44.
A novel circuit design that effectively eliminates the need for input protection circuits is described. Besides having an excellent electrostatic discharge (ESD) robustness, the simulation results have shown that this design outperforms current BiCMOS circuits in terms of speed, power, crossover capacitance, and chip area for a wide range of load capacitances, power supply voltages and technologies. The proposed circuit remains functional after an ESD test 相似文献
45.
Wei Yu Zishen Wang Xiaoxu Zhao Junyong Wang Tun Seng Herng Teng Ma Zhiyu Zhu Jun Ding Goki Eda Stephen J. Pennycook Yuan Ping Feng Kian Ping Loh 《Advanced functional materials》2020,30(31)
Chemical exfoliation has been used for the fast and large‐scale production of 2D nanosheets from graphene and transition metal dichalcogenides; however, it is rarely used for domain engineering of exfoliated nanosheets. Herein, it is found that the use of large sized molecular intercalants during electrochemical intercalation induce atomic row dislocation and parallel mirror twin boundaries (MTBs) on an otherwise pristine rhenium disulfide (ReS2) crystal, such that the exfoliated flakes possess a parallel, multi‐domain structure. These domains can be distinguished under a polarized microscope owing to the intrinsic in‐plane optical dichroic properties of ReS2, thereby affording a way to track the number of domains introduced versus the size of the molecular intercalant during electrochemical exfoliation. Ferromagnetism is detected on the intercalated sample using large sized molecular intercalants. Density function theory suggests that these may be due to the coupled effects of lattice strain and S vacancies in the MTBs. 相似文献
46.
47.
Yunqi Liu Ho Wai Lee Kin Seng Chiang Tao Zhu Yun Jiang Rao 《Lightwave Technology, Journal of》2009,27(7):857-863
We investigate in detail the process of CO2-laser writing of long-period fiber gratings (LPFGs) in unannealed and annealed boron-doped fiber samples by using repeated scanning of CO2-laser pulses. We find that the writing dynamics depends strongly on the CO2-laser energy density and the annealing temperature of the fiber. Our results from analyzing the writing dynamics reveal the relative importance of various physical effects arising from glass structure changes due to different writing conditions and thus provide a better understanding of the formation and the properties of CO2-laser written LPFGs. 相似文献
48.
Qian‐Yu Kuok Chen‐Yu Yeh Bor‐Chyuan Su Pei‐Ling Hsu Hao Ni Ming‐Yie Liu Fan‐E Mo 《Molecular nutrition & food research》2013,57(10):1892-1896
Ganoderma mushrooms (Lingzhi in Chinese) have well‐documented health benefits. Ganoderma tsugae (G. tsugae), one of the ganoderma species, has been commercially cultivated as a dietary supplement. Because G. tsugae has high antioxidant activity and because oxidative stress is often associated with cardiac injury, we hypothesized that G. tsugae protects against cardiac injury by alleviating oxidative stress. We tested the hypothesis using a work‐overload‐induced myocardial injury model created by challenging mice with isoproterenol (ISO). Remarkably, oral G. tsugae protected the mice from ISO‐induced myocardial injury. Moreover, the triterpenoid fraction of G. tsugae, composed of a mixture of nine structurally related ganoderic acids (GAs), provided cardioprotection by inhibiting the ISO‐induced expression of Fas/Fas ligand, oxidative stress, and apoptosis. The antioxidant activity of GAs was tested in cultured cardio‐myoblast H9c2 cells against the insult of H2O2. GAs dissipated the cellular reactive oxygen species imposed by H2O2 and prevented cell death. Our findings uncovered the cardioprotective activity of G. tsugae and identified GAs as the bioactive components against cardiac insults. 相似文献
49.
Yeoh Lai Seng 《电子设计应用》2009,7(4)
绿色指令推动半导体厂家在其微电子产品封装中摒弃氧化锑、阻燃剂及卤代化合物之类的环境有害物质,然而人们可能担心,绿色封装中的新化学材料有可能影响半导体器件的性能.本文中通过热压应力测试对采用绿色和非绿色环氧模塑料(EMC)封装的功率晶体管的性能进行了评测.实验表明,绿色器件的电气和物理性能都优于非绿色器件. 相似文献
50.