oalib

OALib Journal期刊

ISSN: 2333-9721

费用：99美元

投稿

时间不限

( 2673 )

( 2672 )

( 2024 )

( 2023 )

自定义范围…

匹配条件： “Ting-An Tsai” ，找到相关结果约12624条。
列表显示的所有文章，均可免费获取
第1页/共12624条
每页显示 条
Enabling IoT Network Slicing with Network Function Virtualization  [PDF]
Ting-An Tsai, Fuchun Joseph Lin
Advances in Internet of Things (AIT) , 2020, DOI: 10.4236/ait.2020.103003
Abstract: Numerous Internet of Things (IoT) devices are being connected to the net-works to offer services. To cope with a large diversity and number of IoT ser-vices, operators must meet those needs with a more flexible and efficient net-work architecture. Network slicing in 5G promises a feasible solution for this issue with network virtualization and programmability enabled by NFV (Net-work Functions Virtualization). In this research, we use virtualized IoT plat-forms as the Virtual Network Functions (VNFs) and customize network slices enabled by NFV with different QoS to support various kinds of IoT services for their best performance. We construct three different slicing systems including: 1) a single slice system, 2) a multiple customized slices system and 3) a single but scalable network slice system to support IoT services. Our objective is to compare and evaluate these three systems in terms of their throughput, aver-age response time and CPU utilization in order to identify the best system de-sign. Validated with our experiments, the performance of the multiple slicing system is better than those of the single slice systems whether it is equipped with scalability or not.
Growth Mechanism of TiB2 Powder Prepared by SHS-metallurgy
自蔓延冶金法制备 TiB2微粉的生长机理研究
ZHANG Ting-An,DOU Zhi-He,
张廷安
无机材料学报 , 2006,
Abstract: TiB2 powder was prepared by SHS-metallurgy. The relative reaction systems were analyzed by DTA. The combustion products and leachable products were analyzed and characterized by XRD, SEM and granularity distribution. The results indicate that SHS reaction of Mg-TiO2-B2O3 system takes place through solid-liquid-liquid-solid reaction process. The combustion products consist of TiB2, MgO and a little Mg2TiO4 & Mg3B2O6. The TiB2 particles become thinner when the sample pressure increases; TiB2 particle becomes thinner when adding MgO to the reaction system and TiB2 particles become bigger when adding TiB2 to the reaction system. The microstructure of combustion products and the forming mechanism of the different micro-regions were analyzed by Micro-region-technology based on SEM. The growth mechanism of TiB2 can be determined that one is growing in particle-particle interfaces and the other is growing within particles.
Variation law of gas holdup in an autoclave during the pressure leaching process by using a mixed-flow agitator
Lei Tian,Yan Liu,Jun-jie Tang,Guo-zhi Lü,Ting-an Zhang
- , 2017, DOI: https://doi.org/10.1007/s12613-017-1473-7
Abstract: The multiphase reaction process of pressure leaching is mainly carried out in the liquid phase. Therefore, gas holdup is essential for the gas–liquid–solid phase reaction and the extraction rate of valuable metals. In this paper, a transparent quartz autoclave, a six blades disc turbine-type agitator, and a high-speed camera were used to investigate the gas holdup of the pressure leaching process. Furthermore, experiments determining the effects of agitation rate, temperature, and oxygen partial pressure on gas holdup were carried out. The results showed that when the agitation rate increased from 350 to 600 r/min, the gas holdup increased from 0.10% to 0.64%. When the temperature increased from 363 to 423 K, the gas holdup increased from 0.14% to 0.20%. When the oxygen partial pressure increased from 0.1 to 0.8 MPa, the gas holdup increased from 0.13% to 0.19%. A similar criteria relationship was established by Homogeneous Principle and Buckingham’s theorem. Comprehensively, empirical equation of gas holdup was deduced on the basis of experimental data and the similarity theory, where the criterion equation was determined as ε = 4.54 × 10-11 n 3.65 T 2.08 P g 0.18. It can be seen from the formula that agitation rate made the most important impact on gas holdup in the pressure leaching process using the mixed-flow agitator.
Recovery of alkali and alumina from Bayer red mud by the calcification–carbonation method
Xiao-feng Zhu,Ting-an Zhang,Yan-xiu Wang,Guo-zhi Lü,Wei-guang Zhang
- , 2016, DOI: https://doi.org/10.1007/s12613-016-1234-z
Abstract: Red mud produced in the Bayer process is a hazardous solid waste because of its high alkalinity; however, it is rich in valuable components such as titanium, iron, and aluminum. In this study, a novel calcification–carbonation method was developed to recover alkali and alumina from Bayer red mud under mild reaction conditions. Batch experiments were performed to evaluate the potential effects of important parameters such as temperature, amount of CaO added, and CO2 partial pressure on the recovery of alkali and alumina. The results showed that 95.2% alkali and 75.0% alumina were recovered from red mud with decreases in the mass ratios of Na2O to Fe2O3 and of Al2O3 to Fe2O3 from 0.42 and 0.89 to 0.02 and 0.22, respectively. The processed red mud with less than 0.5wt% Na2O can potentially be used as a construction material.
Extraction of vanadium from vanadium slag by high pressure oxidative acid leaching
Guo-quan Zhang,Ting-an Zhang,Guo-zhi Lü,Ying Zhang,Yan Liu,Zhuo-lin Liu
- , 2015, DOI: https://doi.org/10.1007/s12613-015-1038-6
Abstract: To extract vanadium in an environment friendly manner, this study focuses on the process of leaching vanadium from vanadium slag by high pressure oxidative acid leaching. Characterizations of the raw slag, mineralogy transformation, and the form of leach residues were made by X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray spectroscopy. The result shows that the vanadium slag is composed of major phases of fayalite, titanomagnetite, and spinel. During the high pressure oxidative acid leaching process, the fayalite and spinel phases are gradually decomposed by sulfuric acid, causing the release of vanadium and iron in the solution. Meanwhile, unreacted silicon and titanium are enriched in the leach residues. With the initial concentration of sulfuric acid at 250 g·L？1, a leaching temperature of 140°C, a leaching time of 50 min, a liquid-solid ratio of 10:1 mL·g？1, and oxygen pressure at 0.2 MPa, the leaching rate of vanadium reaches 97.69%.
Preparation of CaB6 by Combustion Synthesis
燃烧合成法制备CaB6的研究
DOU Zhi-He,ZHANG Ting-An,NIU Ren-Tong,PAN Rong,
豆志河,张廷安,牛仁通,潘蓉
无机材料学报 , 2008,
Abstract: 以CaO、B2O3、Mg粉为原料燃烧合成制备了CaB6粉末.考察了不同反应体系的差热曲线,采用XRD、SEM以及粒度分析技术对燃烧产物、浸出产物进行了表征.结果表明:Mg-B2O3-CaO反应体系872℃附近放热峰的表观活化能E=15.71kJ·mol-1,反应级数n=1.1,反应的表观活化能很小,说明合成CaB6的反应容易发生.燃烧产物由MgO、CaB6以及少量的Mg3B2O6和Ca3B2O6等组成,在空气中进行燃烧合成反应并不生成氮化物;燃烧产物经硫酸浸出处理后CaB6纯度达92.5%;随着制样压力的增大,CaB6粒度逐渐变小.
Experimental Study on Mixing Performance of Improved Intermig Impeller in an Alumina Seed Precipitator
种分槽改进Intermig桨搅拌性能的实验研究
WANG Shu-chan,ZHANG Ting-an,ZHANG Chao,LIU Yan,ZHAO Qiu-yue,
王淑婵,张廷安,张超,刘燕,赵秋月
过程工程学报 , 2011,
Abstract: 为了研究改进的Intermig桨的搅拌性能，在无挡板的氧化铝种分搅拌槽内，采用PC6D颗粒浓度测量仪对水-玻璃珠液-固体系在不同条件下的颗粒轴向和径向局部浓度进行了测量与分析. 结果表明，较高的搅拌转速和体系粘度更有利于固体颗粒的悬浮. 粘度m=3.50′10-3 Pa·s、转速n=172 r/min时，实验浓度平均值是理论浓度平均值的1.011倍，可见该条件下实验浓度值与理论浓度值更接近，混合更均匀.
Research on Properties of Low Fluorine CaF_2-CaO-Al_2O_3-MgO-SiO_2 Refining Slag
低氟CaF2-CaO-Al2O3-MgO-SiO2系精炼渣的性能
SHI Guan-yong,ZHANG Ting-an,NIU Li-ping,DOU Zhi-he,
史冠勇,张廷安,牛丽萍,豆志河
过程工程学报 , 2011,
Abstract: 设计了精炼铜-铬合金用低氟CaF2-CaO-Al2O3-MgO-SiO2五元渣系，并研究了其粘度、密度、表面张力及熔化温度等性能. 结果表明，该渣系的熔化温度在1336~1402℃之间；高温下该渣系的密度和表面张力均随温度升高而减小，且随CaF2含量和MgO含量增加逐渐降低；增加CaF2添加量可降低渣系粘度；CaF2含量较低时，MgO含量增加也可降低渣系粘度，CaF2含量较高时，渣粘度在MgO含量为6%时最小，MgO含量续增加到9%时粘度反而上升. 该渣系粘度较低，表面张力较小，具有良好的精炼效果.
Identification of autoantibodies to ECH1 and HNRNPA2B1 as potential biomarkers in the early detection of lung cancer
Eng M. Tan,Harvey Pass,Jian-Ying Zhang,Jitian Li,John S. Munger,Jun-Chieh J. Tsay,Liping Dai,Ting-An Yie,William N. Rom
- , 2017, DOI: 10.1080/2162402X.2017.1310359
Abstract:
Red Quinoa Bran Extracts Protects against Carbon Tetrachloride-Induced Liver Injury and Fibrosis in Mice via Activation of Antioxidative Enzyme Systems and Blocking TGF-β1 Pathway
Bai-Luh Wei,Bo-Jun Ke,Cheng-Shih Cheng,Chun-Lin Lee,Jyh-Jye Wang,Ting-An Lin
- , 2019, DOI: 10.3390/nu11020395
Abstract: The late stages of liver fibrosis are considered to be irreversible. Red quinoa (Chenopodium formosanum Koidz), a traditional food for Taiwanese aborigines, was gradually developed as a novel supplemental food due to high dietary fibre and polyphenolic compounds. Its bran was usually regarded as the agricultural waste, but it contained a high concentration of rutin known as an antioxidant and anti-inflammatory agent. This study is to explore the effect of red quinoa bran extracts on the prevention of carbon tetrachloride (CCl4)-induced liver fibrosis. BALB/c mice were intraperitoneally injected CCl4 to induce liver fibrosis and treated with red quinoa whole seed powder, bran ethanol extracts, bran water extracts, and rutin. In the results, red quinoa powder provided more protection than rutin against CCl4-induced oxidative stress, pro-inflammatory factor expression and fibrosis development. However, the bran ethanol extract with high rutin content provided the most liver protection and anti-fibrosis effect via blocking the tumor necrosis factor alpha (TNF-α)/interleukin 6 (IL-6) pathway and transforming growth factor beta 1 (TGF-β1) pathway
第1页/共12624条
每页显示 条


Home
Copyright © 2008-2020 Open Access Library. All rights reserved.