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Phenetic Analysis of morphological and molecular Traits in Acanthaceae Juss

Journal of Biosciences and medicines 2015年第3期3卷 18-34页

作者： usama K. Abdel-Hameed mohamed E. Tantawy mohamed A. Salim magdy m. mourad Ishak F. Ishak Botany Department Faculty of Science Ain Shams University Cairo Egypt

Acanthaceae has received considerable taxonomic attention at the familial, subfamilial, tribal and subtribal levels. Several different infra-familial classifications have been proposed for the Acanthaceae, but no taxonomic consensus has yet been reached. The main objective of the present study is to throw light on the phenetic relationships and to explore the contribution of morphological and molecular characters in systematics of Acanthaceae. The morphological data viz. macromorphology, stomatography, lamina architecture and ISSR profiles of 30 Egyptian acanthaceous taxa were investigated. The phenetic analysis using NTSYS-PC version 2.02 software based on 55 potentially informative morphological and molecular characters indicated that the used morphological and ISSR criteria is likely to be useful and valuable taxonomic traits. The morphological characters and ISSR aspects of all the studied species produced a phenogram that showed two series;one of them had two subseries, the first one comprised only three taxa while the second divided into two clusters, each contained two groups. The delimitation and the membership of the studied taxa clearly merit additional study using more criteria. The phenetic analysis of both morphological and molecular attributes clarified the segregation of genus Avicennia as a distinct identity away from Acanthaceae. Acanthus mollis & A. montanus are isolated in its own series that comparable to tribe Acantheae of the current taxonomic systems. The studied species of Thunbergia are gathered its own subseries that comparable to tribe Thunbergiae and Ruellia in its own group that comparable to tribe Ruellieae.

关键词： Phenetic Analysis Numerical Taxonomy morphology ISSR Acanthaceae

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Investigation of cavities and karstic features at AI-Amal city,Qattamiya,Egypt by using 3-D inversion of VES data

Investigation of cavities and karstic features at AI-Amal ci...

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The 19th International Workshop on Electromagnetic Induction in the Earth

作者： usama massoud mohamed Abdalla Gad El-Qady Ferna ndo Santos National Research Institute of Astronomy and Geophysics(NRIAG) 11722HelwanCairoEgypt Center of Geophysics Lisbon University(CGUL)1749-016LisbonPortugal

In the past few years,construction extended extraordinarily to the southeast of Cairo,Egypt,where limestone caves *** existence of caves and sinkholes represents a hazard for such new urban *** state is planning to construct a new housing community ***,it is important to map and delineate these natural voids and cavities before construction. Recently,cavity imaging by means of geophysical surveys became more *** this paper,DC resistivity survey had been applied at Al-Amal city,east of Qattamiya,Cairo to image the shallow subsurface and possibly karstic features and ***-two vertical electrical soundings were measured using the common Schlumberger array of electrode configuration with a maximum AB/2 spacing of 200 m.A 3-D inversion scheme was applied to the measured *** results of VES data inversion subdivided the shallow subsurface section in the study area into three main geoelectrical *** uppermost unit composed of sand,gravel and fossiliferous limestone with high resistivity values and small *** second unit is composed of sandy clay and clay with low resistivity *** third unit is considered to be the bed rock,where it consists of consolidated sand,limestone and marl with relatively high resistivity values. The results elucidated many geoelectrical variations which could be interpreted as litho-facies *** was also revealed that,the area is dissected by some normal faults affecting the second and third geoelectrical *** addition, numerous cavernous structures could be elucidated at shallow to intermediate *** features are too important to be taken into account during the housing development plans.

关键词： VES data 3-D inversion cave Egypt

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Clinicopathological features and treatment outcomes of brain stem gliomas in Saudi population

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World Journal of Clinical Oncology 2014年第5期5卷 1060-1067页

作者： Yasser Bayoumi Abdulrahman J Sabbagh Reham mohamed usama m El Shokhaiby Ahmed marzouk maklad mutahir A Tunio Ali Abdullah O Balbaid Consultant Radiation Oncology Comprehensive Cancer Center King Fahad Medical City Riyadh-59046 Saudi Arabia Radiation Oncology NCI Cairo University Cairo 11435 Egypt Neurosurgery King Fahad medical City Riyadh-59046 Saudi Arabia Radiation Oncology NCI Cairo University Cairo 11435 Egypt Clinical Oncology Sohag University Sohag 11432 Egypt Radiation Oncology Comprehensive Cancer Center King Fahad Medical City Riyadh-59046 Saudi Arabia

AIm: To analyze experiences to identify treatment outcomes and prognostic factors in a Saudi ***: medical records of patients with brainstem gliomas treated from July 2001 to December 2012 were reviewed to identify treatment outcomes of surgery, radiation therapy and chemotherapy and associated prognostic factors in a Saudi ***: We analyzed 49 brain stem glioma(BSG) patients from July 2001 to December 2012; 31 of them were males(63.3%) with a median age of 12.6 years(range: 8-64 mo). Twenty-two patients(44.9%) had diffuse intrinsic pontine gliomas(DIPG) and 15(30.6%) presented with focal/tectal BSG. Histopathology was available in 30 patients(61.2%). median survival time for the whole cohort was 1.5 years. One and two year OS rates were 51.1% and 41.9% respectively. Two year OS rates for focal/tectal, dorsally exophytic, cervicomedullary and DIPG tumors were 60%, 33.3%, 33.3% and 13.6% respectively(P 18 years) P = 0.01, KPS mptoms(maximal resection) P = 0.002, and concurrent chemotherapy with radiation therapy in DIPG(better if given) P = ***: BSG, especially the DIPG subgroup, had a dismal prognosis, needing more aggressive neurosurgical, radiation and chemotherapy techniques, while focal and tectal tumors were found to have a better prognosis.

关键词： Brain stem glioma Children Adults Saudi Arabia Treatment outcomes

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A multi-proxy reconstruction of spatial and temporal variations in Asian summer temperatures over the last millennium

A multi-proxy reconstruction of spatial and temporal variati...

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中国科学院地质与地球物理研究所2015年度（第15届）学术年会

作者： Feng Shi Quansheng Ge Bao Yang Jianping Li Fengmei Yang Fredrik Charpentier Ljungqvist Olga Solomina Takeshi Nakatsuka Ninglian Wang Sen Zhao Chenxi Xu Keyan Fang masaki Sano Guoqiang Chu Zexin Fan Narayan P.Gaire muhammad usama Zafar Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of Sciences Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences College of Global Change and Earth System Science Beijing Normal University Joint Center for Global Change Studies China meteorological Administration Training Centre Department of History Stockholm University Bolin Centre for Climate Research Stockholm University Institute of Geography Russian Academy of Sciences Tomsk State University Central Department of Environmental Science Tribhuvan University

To investigate climate variability in Asia during the last millennium, the spatial and temporal evolution of summer(June–July–August;JJA) temperature in eastern and south-central Asia is reconstructed using multi-proxy records and the regularized expectation maximization(RegE m) algorithm with truncated total least squares(TTLS), under a point-by-point regression(PPR) framework. The temperature index reconstructions show that the late 20 th century was thewarmest period in Asia over the past millennium. The temperature field reconstructions illustrate that temperatures in central, eastern, and southern China during the 11 th and 13 th centuries, and in western Asia during the 12 th century, were significantly higher than those in other regions, and comparable to levels in the 20 th century. Except for the most recent warming, all identified warm events showed distinct regional expressions and none were uniform over the entire reconstruction area. The main finding of the study is that spatial temperature patterns have, on centennial timescales, varied greatly over the last millennium. moreover, seven climate model simulations, from the Coupled model Intercomparison Project Phase 5(CmIP5), over the same region of Asia, are all consistent with the temperature index reconstruction at the 99 % confidence level. Only spatial temperature patterns extracted as the first empirical orthogonal function(EOF) from the GISS-E2-R and mPI-ESm-P model simulations are significant and consistent with the temperature field reconstruction over the past millennium in Asia at the 90 % confidence level. This indicates that both the reconstruction and the simulations depict the temporal climate variability well over the past millennium. However, the spatial simulation or reconstruction capability of climate variability over the past millennium could be still limited. For reconstruction, some grid points do not pass validation tests and reveal the need for more proxies with high temporal res

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