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Geothermobarometry of Askaoun Pluton in Ouzellarh-Sirwa Promontory (Central Anti-Atlas;Morocco)

Open Journal of Geology 2012年第3期2卷 136-147页

作者： Abdeslam Toummite moha ikenne El Hassane Beraaouz Applied Geology and Environmental Geology Laboratory Faculty of Sciences Ibn Zohr University Agadir Morocco

Rocks of the late Neoproterozoic Askaoun pluton (558 ± 2 Ma) located in the Ouzellarh-Sirwa promontory (Anti-Atlas) include magmatic microgranular enclaves (MMEs) ranging from rounded to ovoid in shape, dark and fine grained and generally 5 to 10 cm in size, some reaching a size of 50 cm. They are composed of microdiorite, quartz microdiorite and micromonzodiorite, whereas the felsic host rocks comprise mainly quartz-diorite and amphibole-biotite granodiorite based on mineralogical compositions. The mineral assemblage is similar to those described in their hosting granitoids but with different proportions. in this study composition of minerals is used to describe the nature of the magma and estimate the pressure, temperature and oxygen fugacity at which Askaoun pluton is emplaced. Based on chemistry of biotite Askaoun pluton formed from calc-alka.ine magma. Compositions of plagioclase (An5 - An29);hornblende (Mg ≠= 0.59 - 0.65) and biotite (Mg ≠= 0.49 - 0.55) of MMEs are slightly distinct or similar to those of host rocks (An7-40;hbl Mg ≠= 0.64 - 0.69;Bi Mg ≠= 0.49 - 0.50) which suggest partial to complete equilibration during mafic-felsic magma.interaction. The coexisting hornblende and plagioclase (hornblende-plagioclase thermometry), Al content in hornblende (aluminum-in-hornblende barometry) and the assemblage titanite-magnetite-quartz were used to constrain the P, T and fO2 during the crystallization of the parent magmas. The Askaoun pluton was emplaced at temperature ca. 504°C - 633°C and at pressure ca. 0.9 - 4.66 ± 0.6 Kbars (average depth = 6.5 km) from a highly oxidized magma (log fO2 = ?24.8 to ?19.2).

关键词： Askaoun Pluton MMEs Hornblende Thermobarometry Ouzellargh-Sirwa Promontory Anti-Atlas Morocco

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A Novel Methodology to Design Miniaturized Regular Planar inverted-F Antennas Based on Parametric Simulations

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Journal of Electromagnetic Analysis and Applications 2013年第7期5卷 302-311页

作者： Abdelhakim Elouadih Ahmed Oulad-Said moha Mrabet Hassani Department of Electrical and Telecommunications Engineering Royal Air Academy (ERA) Marrakesh Morocco Department of Physics Semlalia University of Sciences (FSSM) Marrakesh Morocco

This paper describes a novel methodology to design PiFA (Planar inverted-F Antenna) antennas based on parametric simulations. The parameters considered in the parametric design are ground plan dimensions, height of radia.ing plate, feeding point position, shorting plate width and position. The choice of the parameters that must be varied independently or simultanously is important to design optimized antenna. The author studied two scenarios in precedent works [1,2]. He exposes here a third scenario of va.ing antenna parameters to design and simulate by HFSS (High Frequency Simulator Structure) simulator a probe-fed dual band PiFA for the use in GSM 850 band (824 MHz - 894 MHz) and PCS 1900 band (1850 MHz - 1990 MHz). The author compares the three scenarios and establishes a novel methodology to design optimized and miniaturized antennas mounted on mobile handsets.

关键词： PiFA HFSS Design Methodology

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Design and Parametric Simulation of a Miniaturized PiFA Antenna for the PCS Band

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Wireless Engineering and Technology 2013年第2期4卷 105-111页

This paper describes the design and simulation by HFSS simulator of a probe-fed Planar inverted-F Antenna (PiFA) for the use in PCS band [1850 MHz - 1990 MHz]. A methodology based on parametric simulations (parameters are ground plan dimensions, height of radia.ing plate, feeding point position, shorting plate dimensions and positioning) was used to design optimized antenna. The simulation allowed the characterization of the designed antenna and the computing of different antenna parameters like S11 parameter, resonant frequency, SWR, bandwidth impedance in feeding point, gain, 2D and 3D diagram pattern, Fields distribution. The simulation results are interesting and respect the mean PCS requirements.

关键词： PCS HFSS PiFA Patch Antenna Parametric Simulation

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Design and Simulation by HFSS of a Slim UWB PiFA Antenna

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World Journal of Engineering and Technology 2013年第2期1卷 17-22页

作者： Abdelhakim Elouadih Ahmed Oulad-Said moha Mrabet Hassani Department of Electrical and Telecommu- nications Engineering Royal Air Academy (ERA) Marrakesh Morocco Department of Physics Semlalia University of Sciences (FSSM) Marrakesh Morocco

This paper describes the design and simulation by High Frequency Structure Simulator (HFSS) of a probe-fed Planar inverted-F Antenna (PiFA) for the Ultra Wide Band (UWB) personal area networks. The slim antenna presents a height of 2 mm and a bandwidth of more than 766 MHz. This bandwidth was improved by etching a U-slot in the antenna patch. The bandwidth offered then by the antenna is 839 MHz around the resonant frequency of 9 GHz. The improvement of bandwidth was accompanied by decrea.ing in gain and radiation efficiency. The simulation allowed the characterization of the designed antenna and the computing of different antenna parameters like S11 parameter, resonant frequency, bandwidth, radiation efficiency, gain and diagram pattern. The results are very interesting and respect the Federal Communications Commission (FCC) requirements.

关键词： PiFA HFSS UWB

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Design and Simulation of a PiFA Antenna for the Use in 4G Mobile Telecommunications Networks

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international Journal of Communications, Network and System Sciences 2013年第7期6卷 325-332页

作者： Abdelhakim Elouadih Ahmed Oulad-Said moha Mrabet Hassani Department of Physics Semlalia University of Sciences (FSSM) Marrakesh Morocco

This paper describes the design and simulation by HFSS simulator of a probe-fed and multi-band Planar inverted-F Antenna (PiFA) for the 4G mobile networks. The antenna works in 8 bands. Five bands are auctioned by FCC for 4G (LTE and WiMax) such 710 MHz, 1900 MHz (PCS), 2.3 GHz (WCS band), 3.65 GHz (rural 4G) and 5.8 GHz (FCC unlicensed band). The antenna allows working around 910 MHz iSM band. The GPS signal can be received in GPS L2 band around the frequency 1575 MHz. The antenna offers also a wideband around 8.62 GHz. The simulation allowed the characterization of the designed antenna and the computing of different antenna parameters like S11 parameters, resonant frequency, bandwidth, radiation efficiency, gain and diagram pattern. The results are very interesting and respect mostly the requirements.

关键词： PiFA HFSS 4G iSM GPS

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Design and Parametric Simulation of a Bi-Band Miniaturized PiFA Antenna for the GSM900 and DCS1800 Bands

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Journal of Electromagnetic Analysis and Applications 2013年第5期5卷 189-195页

作者： Abdelhakim Elouadih Ahmed Oulad-Said moha Mrabet Hassani Department of Electrical and Telecommunications Engineering Royal Air Academy (ERA) Marrakesh Morocco Department of Electrical and Telecommunications Engineering Royal Air Academy (ERA) Marrakesh Morocco Department of Physics Semlalia University of Sciences (FSSM) Marrakesh Morocco.

This paper describes the design and simulation by HFSS simulator of a probe-fed Planar inverted-F Antenna (PiFA) for the use in GSM900 band [890 MHz - 960 MHz] and DCS1800 band [1710 MHz - 1880 MHz]. A methodology based on parametric simulations (parameters are ground plan lenght, height of radia.ing plate, feeding point position, shorting plate width and position) was used to design optimized antenna. The simulation allowed the characterization of the designed antenna and the computing of different antenna parameters like S11 parameter, resonant frequency, VSWR, bandwidth, impedance in feeding point, gain, diagram pattern and Fields distribution. The results were very interesting and respect the GSM requirements.

关键词： GSM DCS HFSS PiFA Patch Antenna Parametric Simulation

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氟化处理对植入材料Mg-Ca二元合金腐蚀行为的影响(英文)

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Transactions of Nonferrous Metals Society of China 2013年第3期23卷 699-710页

作者： Hamid Reza Bakhsheshi-Rad Mohd Hasbullah idris moha mmed Rafiq Abdul Kadir mohammadreza Daroonparvar Materials Engineering Department Faculty of Mechanical EngineeringUniversiti Teknologi MalaysiaSkudai 81310JohorMalaysia Department of Biomechanics & Biomedical Materials Faculty of Biomedical Engineering & Health SciencesUniversiti Teknologi MalaysiaSk udai 81310JohorMalaysia

在室温下,将Mg-0.5Ca合金在不同浓度的氢氧化钠和HF溶液浸渍不同的时间,研究HF处理对合金腐蚀行为的影响。采用原子力显微镜、X射线衍射、场发射扫描电子显微镜表征样品的微观组织变化。通过动电位极化和Kokubo溶液浸泡试验测试样品的... 详细信息

在室温下,将Mg-0.5Ca合金在不同浓度的氢氧化钠和HF溶液浸渍不同的时间,研究HF处理对合金腐蚀行为的影响。采用原子力显微镜、X射线衍射、场发射扫描电子显微镜表征样品的微观组织变化。通过动电位极化和Kokubo溶液浸泡试验测试样品的耐腐蚀性。结果表明,与35%HF处理的样品相比,经40%HF溶液处理的Mg-0.5Ca合金具有更均匀、更致密、更薄的涂层(12.6μm)。电化学测试表明,在Kokubo溶液中,经氟化物处理的Mg-0.5Ca合金样品的耐腐蚀性比未处理样品的高35倍;前者的体外降解速率远远低于后者的。在40%HF溶液处理过的样品表面只出现了一些腐蚀点,而未经处理的样品完全被腐蚀产物覆盖且出现了分层现象。40%HF处理的Mg-0.5Ca合金,具有低的降解速率和良好的生物相容性,是一种有潜力的植入材料。

关键词： Mg-Ca合金表面处理腐蚀行为生物相容性

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涕灭威对努比亚山羊的毒性

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动物毒物学 1995年第1期10卷 46-48页

作者： moha.,OS 孙素玲

给努比亚山羊一次灌服１５０、３７．５和５ｍｇ／ｋｇ涕灭威后５－１８０分钟出现明显的中毒症状和死亡。每天灌服０．５－０．１ｍｇ／ｋｇ，５－４０天山羊死亡。临床上出现神经症状则预示着羊快要死亡。文中描述了病理学、血液学和... 详细信息

给努比亚山羊一次灌服１５０、３７．５和５ｍｇ／ｋｇ涕灭威后５－１８０分钟出现明显的中毒症状和死亡。每天灌服０．５－０．１ｍｇ／ｋｇ，５－４０天山羊死亡。临床上出现神经症状则预示着羊快要死亡。文中描述了病理学、血液学和生物化学的变化。

关键词：涕灭威山羊中毒毒性羊病

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苏丹南穆格莱德裂谷盆地生油模拟

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石油勘探开发情报 2000年第5期 1-19页

作者： moha.,AY 白振端

对苏丹南穆格莱德裂谷盆地１２０公里长的北东南西向横剖面成熟度和生油进行了模拟。该剖面穿过尤尼蒂和凯冈地区，在这两个地区有井控资料，用于控制根据重力和地震反射剖面作出的构造解释。利用校正后的井底温度进行地热模拟，得出井... 详细信息

对苏丹南穆格莱德裂谷盆地１２０公里长的北东南西向横剖面成熟度和生油进行了模拟。该剖面穿过尤尼蒂和凯冈地区，在这两个地区有井控资料，用于控制根据重力和地震反射剖面作出的构造解释。利用校正后的井底温度进行地热模拟，得出井控地区目前的热流值是６０ｍＷ／ｍ＾２。在利用测定的镜质体数据作为刻度的条件下，采用与当前热流值相似的恒定古热流值或者采用与裂谷相关的复杂的热流样式，都可以很好地对成熟度进行模拟。

关键词：裂谷盆地生油模拟苏丹南穆格莱德裂谷

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加糙消力池底板对水跃长度的影响

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北京水利科技 1993年第3期 49-52页

作者： moha.,HS 陈弘

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