|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Observer-based Adaptive Fuzzy Control for a Class of Nonlinear Time-delay Systems显示文摘An observer-based adaptive fuzzy control is presented for a class of nonlinear systems with unknown time delays. The state observer is first designed, and then the controller is designed via the adaptive fuzzy control method based on the observed states. Both the designed observer and controller are independent of time delays. Using an appropriate Lyapunov-Krasovskii functional, the uncertainty of the unknown time delay is compensated, and then the fuzzy logic system in Mamdani type is utilized to approximate the unknown nonlinear functions. Based on the Lyapunov stability theory, the constructed observer-based controller and the closed-loop system are proved to be asymptotically stable. The designed control law is independent of the time delays and has a simple form with only one adaptive parameter vector, which is to be updated on-line. Simulation results are presented to demonstrate the effectiveness of the proposed approach. | Hassan A. Yousef Mohamed Hamdy | 2013 | International Journal of Automation and computing2013，10，4： | 15 |
| 2 | 桉树叶凋落物对树林和农作物的他感作用(英文)显示文摘调查了土壤中配以不同量的桉树叶凋落物对温室条件生长的常见作物和树木的他感作用。用于生物鉴定物种包括三种常见农作物(Falen(Vigna unguiculata),Chickpea(Cicer arietinum),Arhor(Cajanus cajan))和两种广泛栽植树种(Sadakoroi(Albizia procera)and Ipil ipil(Leucaena leucocephala))。实验材料在室温(27°C)条件下用托盘培养,混以不同剂量的凋落物的土壤培养材料的各项指标与对照比较。结果表明,桉树凋落叶诱导抑制作用,且该作用依赖于萃取物和凋落物浓度,受作用物种类型。实验用材料的剂量越高,抑制作用则越高,反之,亦然。尽管生物鉴定种均受到抑制,其中仍有表现较好的种。基于本实验结果,推荐Vigna unguiculata,Cicer arietinum种于复合农林系统中。在混交林中,Leucaena leucochephala和Albizia procera比较,优先选择Leucaena leucochephala。图4表7参39。 | Romel Ahmed A. T. M. Rafiqul Hoque Mohammed Kamal Hossain | 2008 | Journal of Forestry Research2008，19，1： | 11 |
| 3 | Performance of an activated carbon made from waste palm shell in simultaneous adsorption of SO_x and NO_x of flue gas at low temperature显示文摘This study examined the individual and simultaneous adsorption of SOx (SO2) and NOx (NO-NO2) on activated carbon prepared from waste palm shell. The adsorption process was examined in a fixed bed reactor at low temperatures (100―300℃). For individual adsorption without any catalytic activation, SOx showed good adsorption whereas NOx was very much poor. In the simultaneous adsorption of SOx and NOx, SOx showed greater adsorption affinity than NOx. For palm shell activated carbon (PSAC) impregnated with metal catalyst (Ni and Ce) the concentration adsorbed profile showed that the amount of SOx adsorbed decreased regularly, while the amount of the adsorbed NOx increased irregularly. The properties of the pure and impregnated PSAC were analyzed by BET, SEM and EDX. These investiga-tions indicated that PSAC impregnated with metal catalyst is the determining factor in the adsorption of SOx and NOx simultaneously. | S. SUMATHI S. BHATIA K.T. LEE A. R. MOHAMED | 2009 | Science China(Technological Sciences)2009，52，1： | 11 |
| 4 | Effect of Altering Linoleic Acid and Linolenic Acid Dietary Ratios on the Performance and Tissue Fatty Acid Profiles of Prawn, Macrobrachium rosenbergii (de Man 1879) Post Larvae显示文摘 | A. M. A. S. Goda M. M. Habashy M. A. Hanafy R. A. Mohamed H. A. Mabrouk T. M. El-Afifi S. A.Nada K. A. Mohamed | 2011 | Journal of Agricultural Science and Technology(B)2011，1，7： | 11 |
| 5 | The microsatellite polymorphism of heme oxygenase-1 is associated with baseline plasma IL-6 level but not with restenosis after coronary in-stenting显示文摘Background Vascular smooth muscle cells (VSMCs) can express heme-oxygenase (HO), a rate-limiting enzyme in the degradation of heme to bilirubin, ferritin and carbon monoxide (CO). VSMC-derived CO can suppress VSMC proliferation and may serve as an antiproliferation factor. The promoter region of HO-1 shows a polymorphism with different (GT)_n repeats that has been reported to differently induce gene expression. The objective of this study was to examine the effect of this variation on the occurrence of restenosis after in-stent treatment in patients with coronary artery disease. Methods Candidates who underwent coronary stent implantation were genotyped for the HO-1 promoter polymorphism using polymerase chain reaction (PCR) and automated DNA capillary sequencer. Serum levels of IL-6 and C-reactive protein (CRP) were obtained at baseline, 24 hours and 48 hours after stenting. The primary end point for the study was angiographic evidence of in-stent restenosis at 6 months. All parameters for evaluation of restenosis were analysed by quantitatve computer-assisted angiographic analysis (QCA). Results One hundred and eighty-seven patients who underwent coronary stent implantation were studied of whom 27.8% showed ≥50% restenosis after 6 months. The distribution of (GT)_n repeats of all patients in the promoter region of HO-1 genotype ranged from 22 to 42, with (GT)_ 25 and (GT)_ 32 being the two most common alleles. The allelic repeats were divided into the short class (S) with 29 (GT)_n, the middle class (M) with 30-37 (GT)_n and the long class (L) with 38 (GT)_n. There was no significant difference in the restenosis between the genotype groups or between post operation levels of inflammation markers, but carriers of the S allele (n=120) had 33.3% lower baseline IL-6 compared with non-S carriers (n=67, P=0.0008). Conclusions Although no association was observed between the HO-1 promoter polymorphism aod coronary in-stent restenosis following the stent procedure, the association with plasma IL-6 levels suggests that HO-1 S allele might protect from the atherosclerotic inflammatory process. | LI Ping Mohamed A. Elrayess Abuzeid H. Gomma Jutta Palmen Emma Hawe Kim M. Fox Steve E. Humphries | 2005 | Chinese Medical Journal2005，，18： | 6 |
| 6 | 宁夏城镇居民家庭理财产品购买意愿与选择行为研究显示文摘通过对宁夏银川、石嘴山、吴忠三个城市的城镇居民家庭理财产品选择行为抽样调查,构建了宁夏城镇居民家庭理财产品购买意愿Probit模型和种类选择Possion模型,得出民族变量对城镇居民家庭非银行储蓄理财产品购买意愿没有显著影响,但是对于非银行储蓄理财产品的种类选择存在一定影响。对于城镇回族居民家庭而言,受教育程度、收入水平、收益性关注度和宗教信仰虔诚程度四个变量影响较为显著。最后,提出了相应的对策建议。 | 王瑜 谢昱 Mohammed Y. A. Rawwas | 2017 | 北方民族大学学报(哲学社会科学版)2017，，1： | 4 |
| 7 | Evaluation of phosphorus bioavailability in El Mex Bay and Lake Mariut sediments显示文摘Phosphorus(P) fractions and their bioavailability in the sediments from El Mex Bay and Lake Mariut in Egypt were investigated using different chemical extraction methods. Sodium bicarbonate(NaHC03)extractable P(Olsen-P) was the largest fraction(14.42%), followed by algal available P(AAP)(3.56%),water soluble P(WSP)(0.79%), and readily desorbable P(RDP)(0.06%) for El Mex Bay. While AAP contributed 9.94% to total P in sediments from Lake Mariut, Olsen-P 8.53%, WSP 4.11%, and RDP 0.92%.Summation of the bioavailable P fractions didn't exceed the sediment quality guidelines, and, therefore, P doesn't represent a danger to marine organisms. Correlation coefficients showed that no apparent relations between total P(TP) and iron(Fe), aluminum(Al), and calcium(Ca) in the sediments. Furthermore, Fe:P ratio was less than 15 indicting that there was not enough Fe in surface sediments to bind to P at most of the sampling sites. The positive correlation between TP and organic matter(OM) for Lake Mariut and El Mex Bay sediments indicated that the organic matter content of the sediment was a useful predictor of the total phosphorus content. Data from this study constitute a baseline of phosphorus bioavailability in sediments from El Mex Bay and Lake Mariut and could be used as a reference for future studies on the changes of bioavailable and residual phosphorus fractions over time. | Naglaa F. Soliman Gehan M. El Zokm Mohamed A. Okbah | 2017 | International Journal of Sediment Research2017，32，3： | 4 |
| 8 | 脉冲电流对Al-Mg合金力学性能和断口的影响显示文摘研究了高能量密度0.150 J/mm^3和低能量密度0.105 J/mm^3下,不同脉冲电流参数对铝合金流动应力和伸长率的影响.铝合金在相同的能量密度下产生的温度一致,由此探讨了电辅助成形中的非焦耳热效应.结果表明:脉冲电流的引入能够降低铝合金的最大应力值,提高伸长率.相同能量密度下,随着脉冲电流密度的增加,最大应力值保持不变,但是脉冲电流引起的瞬时应力下降值增加,且伸长率显著增加.通过应力回复模型,准确预测出脉冲电流引起的应力下降值.高能量密度下试样拉伸后的断口韧窝数量变少,并且随着脉冲电流密度的增加,断口韧窝数量减少直至消失,断口伸长率的提高也正是脉冲电流抑制了空洞的形核和长大所致. | 范蓉 赵坤民 任大鑫 ZIKRY Mohammed A. | 2016 | 中国科学:技术科学2016，46，7： | 4 |
| 9 | Acute-on-chronic liver failure: consensus recommendations of the Asian Pacific Association for the study of the liver (APASL)显示文摘 | Shiv Kumar Sarin Ashish Kumar John A. Almeida Yogesh Kumar Chawla Sheung Tat Fan Hitendra Garg H. Janaka Silva Saeed Sadiq Hamid Rajiv Jalan Piyawat Komolmit George K. Lau Qing Liu Kaushal Madan Rosmawati Mohamed Qin Ning Salimur Rahman Archana Rastogi St | 2009 | Hepatology International2009，，1： | 4 |
| 10 | Hydrodynamic Characteristics of Three Rows of Vertical Slotted Wall Breakwaters显示文摘In this study, we examine the hydrodynamic characteristics of three rows of vertical slotted wall breakwaters in which the front and middle walls are permeable and partially immersed in a water channel of constant depth, whereas the third wall is impermeable. The wave–structure interaction and flow behavior of this type of breakwater arrangement are complicated and must be analyzed before breakwaters can be appropriately designed. To study the hydrodynamic breakwater performance, we developed a mathematical model based on the eigenfunction expansion method and a least squares technique for predicting wave interaction with three rows of vertical slotted wall breakwaters. We theoretically examined the wave transmission, reflection, energy loss, wave runup, and wave force under normal regular waves. Comparisons with experimental measurements show that the mathematical model results adequately reproduce most of the important features. The results of this investigation provide a better understanding of the hydrodynamic performance of triple-row vertical slotted wall breakwaters. | Majed O. Alsaydalani Mohammed A. N. Saif Medhat M. Helal | 2017 | Journal of Marine Science and Application2017，16，3： | 4 |
| 11 | Middle East respiratory syndrome coronavirus: a comprehensive review显示文摘中东呼吸症候群 coronavirus 首先在 2012 被识别并且从那以后仍然保持不受管束。案例主要在中东,然而联系旅行的案例和爆发被报导了也发生了。医院并且病毒的 zoonotic 传播看起来是最重要的线路。感染严重、高度致命因此要求快速、有效的干预。这里,我们执行了出版文学的全面评论并且总结了病毒的传染病学。另外,我们总结了感染的 virological 方面并且考察了象种痘一样使用的动物模型并且抗病毒对它测试了。 | Mahmoud M. Shehata Mokhtar R. Gomaa Mohamed A. Ali Ghazi Kayali | 2016 | Frontiers of Medicine2016，10，2： | 4 |
| 12 | Novel point mutations and mutational complexes in the enhancer II, core promoter and precore regions of hepatitis B virus genotype D1 associated with hepatocellular carcinoma in Saudi Arabia显示文摘 | Anis Khan Mohammed A. Al Balwi Yasuhito Tanaka Ali Hajeer Faisal M. Sanai Ibrahim Al Abdulkarim Latifah Al Ayyar Motasim Badri Dib Saudi Waleed Tamimi Masashi Mizokami Bandar Al Knawy | 2013 | Int J Cancer2013，，12： | 4 |
| 13 | A simulation study of using active traffic management strategies on congested freeways显示文摘The main objective of this study is to evaluate the effectiveness of using active traffic management (ATM) strategies on freeways in terms of the driver's behavior and operational impacts. A few test beds were selected to evaluate the impacts of ATM such as speed harmonization, shoulder utilization, and ramp metering. Test beds used in this study were at places where an ATM is either proposed or previously implemented, i.e., where data exists for conditions prior to and after the implementation of ATM. Data collected from the test beds were used in a simulation model to evaluate the impacts of each ATM strategy on speed, travel time, and crash rates. Simulation results indicated that the implementation of speed harmonization on US 90 showed a 14% reduction in crashes and a 2%-3% increase in freeway speed; the implementation of hard shoulders on US 90 showed a 39% increase in travel time, 22% increase in freeway capacity and 60% decrease in delays; and the implementation of ramp metering on US 59 between Bissonnet St. and Fondern road showed a decrease of 23 % in freeway travel time, a 14% increase in freeway speed and 11% decrease in accident rates. | Ramakrishna VADDE Joseph O. SAI Mohammed A. FARUQI Pat T. LEELANI | 2012 | Journal of Modern Transportation2012，20，3： | 3 |
| 14 | Peritoneal Mesothelioma Treated by Cytoreductive Surgery and Intraperitoneal Hyperthermic Chemotherapy: Results of a Prospective Study显示文摘 | C. Brigand MD O. Monneuse MD F. Mohamed MBChB MRCS A. C. Sayag-Beaujard MD S. Isaac MD F. N. Gilly MD PhD O. Glehen MD PhD | 2006 | Annals of Surgical Oncology2006，，3： | 3 |
| 15 | Green synthesis of iron oxide(Fe_3O_4)nanoparticles using two selected brown seaweeds:Characterization and application for lead bioremediation显示文摘The exploitation of different plant materials for the biosynthesis of nanoparticles is considered a green technology because it does not involve any harmful chemicals. In this study, iron oxide nanoparticles(Fe_3O_4-NPs) were synthesized using a completely green biosynthetic method by reduction of ferric chloride solution using brown seaweed water extracts. The two seaweeds Padina pavonica(Linnaeus) Thivy and Sargassum acinarium(Linnaeus) Setchell 1933 were used in this study. The algae extract was used as a reductant of Fe Cl_3 resulting in the phytosynthesis of Fe_3O_4-NPs. The phytogenic Fe_3O_4-NPs were characterized by surface plasmon band observed close to 402 nm and 415 nm; the obtained Fe_3O_4-NPs are in the particle sizes ranged from 10 to 19.5 nm and 21.6 to 27.4 nm for P. pavonica and S. acinarium, respectively. The strong signals of iron were reported in their corresponding EDX spectra. FTIR analyses revealed that sulphated polysaccharides are the main biomolecules in the algae extracts that do dual function of reducing the Fe Cl_3 and stabilizing the phytogenic Fe_3O_4-NPs. The biosynthesized Fe_3O_4-NPs were entrapped in calcium alginates beads and used in Pb adsorption experiments. The biosynthesized Fe_3O_4-NPs alginate beads via P. pavonica(Linnaeus) Thivy had high capacity for bioremoval of Pb(91%) while that of S. acinarium(Linnaeus) Setchell 1933 had a capacity of(78%) after 75 min.The values of the process parameters for the maximum Pb removal efficiency by Fe_3O_4-NPs alginate beads synthesized via P. pavonica(Linnaeus) Thivy were also estimated. | EL-KASSAS Hala Y. ALY-ELDEEN Mohamed A. GHARIB Samiha M. | 2016 | Acta Oceanologica Sinica2016，35，8： | 3 |
| 16 | Can EUS-guided FNA distinguish between gallbladder cancer and xanthogranulomatous cholecystitis?显示文摘 | Susumu Hijioka Mohamed A. Mekky Vikram Bhatia Akira Sawaki Nobumasa Mizuno Kazuo Hara Waki Hosoda Yasuhiro Shimizu Kiichi Tamada Yasumasa Niwa Kenji Yamao | 2010 | Gastrointestinal Endoscopy2010，，3： | 3 |
| 17 | Nonalcoholic Fatty Liver Disease and Cardiovascular Disease: Has the Time Come for Cardiologists to Be Hepatologists?显示文摘 | Mohamed H. Ahmed Salma Barakat Ahmed O. Almobarak Mahir A. Hamad | 2012 | Journal of Obesity2012，，： | 3 |
| 18 | Characterization and modeling of long-term stress-strain behavior of water confined pre-saturated gypsum rock in Kurdistan Region,Iraq显示文摘In order to understand the effects of soaking time and confined water pressure on the strength of rock due to dissolution of gypsum,rock samples with 96% of gypsum content collected from Kurdistan Region in northern Iraq were investigated.Laboratory tests were then performed on the normal gypsum rock samples under pre-saturated condition to obtain their uniaxial compressive strength(UCS) values.The pre-saturated samples were submerged in distilled water for 35 d,70 d and 105 d,respectively,under confined water pressures of 0-0.5 MPa.The gypsum content decreased by 11% after 105 d of soaking under confined water pressure of 0.5 MPa.The UCS of the normal gypsum rock was 19.6 MPa and it decreased to 6.3 MPa and 2 MPa after 105 d of soaking under confined water pressures of 0 and 0.5 MPa,respectively.A nonlinear constitutive model was used to simulate the experimental stress-strain relationships of rock samples under various conditions.The constitutive model parameters were sensitive to the gypsum content. | N. Salih A. Mohammed | 2017 | Journal of Rock Mechanics and Geotechnical Engineering2017，9，4： | 3 |
| 19 | Impact of Biochar Amendment on Fertility of a Southeastern Coastal Plain Soil显示文摘 | Jeffrey M. Novak Warren J. Busscher David L. Laird Mohamed Ahmedna Don W. Watts Mohamed A. S. Niandou | 2009 | Soil Science2009，，2： | 3 |
| 20 | Review on nanocomposites fabricated by mechanical alloying显示文摘Composites are composed of multiphase materials, where each phase has specific properties that differ from those of the other phases which can effect on the whole properties of composite. Nanocomposites are class of materials that contain at least one phase in the nanometric size range and can be produced by any suitable technique for preparing nanomaterials. Composites are an interesting class of materials that have recently been used in numerous applications, including structural, biomedical, electronics, and environmental applications. In composites, reinforcements might be fibers, particulates, or whiskers. Mechanical alloying(MA) is a promising technique for producing nanocomposite materials that are difficult or impossible to prepare via conventional techniques. In this review, we provide an overview of nanocomposites prepared by the MA process. The mechanism of milling and other milling parameters are overviewed, and insights into sintering categories and parameters are also presented. | Mohammed A. Taha Rasha A. Youness M.F. Zawrah | 2019 | International Journal of Minerals,Metallurgy and Materials2019，26，9： | 3 |
您所在的机构暂未开通此部分的功能，请联系管理员