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Effects of geomorphology and soil conditions on vegetation structure in conserved desert wadis: A case study of Jal alZor escarpment, Kuwait

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Journal of Mountain Science 2020年第3期17卷 588-601页

作者： raafat H.ABDEl-WAHAB Mohammed A.BIHZAD alham J.al-LANGAWI Botany Department Faculty of ScienceSuez Canal UniversityIsmailia 41522Egypt Science Department College of Basic EducationPublic Authority for Applied Education and TrainingAdailiya 73251Kuwait

Variations in phytogeography of Jal al-Zor wadi system in Sabah al Ahmad Nature reserve, an arid national park in Kuwait, in relation to physiographic and edaphic conditions were investigated using alpha diversity and multivariate analyses. A total of 66 plant species were recorded at low-relief and high-relief wadis. altitude and slope gradients, grain size distribution and soil texture properties had a significant relationship with plant cover and plant diversity. There was a high diversity of life-forms along the wadi system with a dominant of therophytes(annuals) particularly in spring after winter rainfalls. Chamaephytes and hemicryptophytes were the dominant perennial life-forms. A chorological analysis documents the strong effect of Saharo-Arabian chorotype on the vegetation of the study area. Cluster analysis clarified eight vegetation assemblages along altitude and slope gradients within the wadi system. alpha diversity of plant species was greater in plant assemblages at low-relief wadis than at high-relief wadis. Vegetation structure in this study showed that phytogeographically, wadis of Jal al-Zor were closely related to the wadis in the Arabian deserts. The slope gradient pattern and edaphic conditions of plant assemblages and plant diversity in the conserved wadis of Jal al-Zor may be suggested as a reference model for restoration strategy of disturbed low elevated wadis in the surrounding desert *** would include propagation of suitable plants such as Stipagrostis plumosa-Haloxylon salicornicum-rhanterium epapposum.

关键词： Arabian desert Vegetation structure Wadi system alpha diversity Clustering analysis

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The Effect of Climate on the Chemical Composition of the Coral reefs around Kubbar Island—Kuwait

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International Journal of Geosciences 2013年第2期4卷 511-528页

作者： alham Jassim al-Langawi Science Department The Public Authority for Applied Education and Training (PAEET) Adailiyah Kuwait

Thick recent carbonate sediments cover all the intertidal and subtidal zones consist of mainly different shell and coral reef debris. The chemical investigations of the coral fragments were done on controlled bases, which depend on the coral size and seasons, in order to elucidate the effect of weather parameters on the coral reefs. Geochemical investigation indicated that corals gathered from high-tide mark are mainly contaminated by copper, cobalt, and chromium and the corals gathered from low-tide mark are contaminated by lead and zinc. all the analyzed coral samples are contaminated by copper. The major contamination sights by heavy metals are related to the weather pattern around the islands. Calcium concentration in all the corals indicates a low-Magnesium calcite or aragonite composition, except for some coral samples which were gathered during October from the high-tide mark. Trace element concentration levels show high concentrations at sights of low-wave action around the island during the various seasons. Chemical analysis on the coral derbies indicates compositional variations regarding calcium and magnesium mole% between the seasons and at different locations and it is dependant on wind direction and water salinity. Some localities are iron rich others are aluminum and potassium rich. Generally, aluminum, iron, and potassium occur in lower quantities than the other elements. Therefore, all the chemical data regarding trace elements indicate relationship to weather and environmental parameters.

关键词： Kubbar Island Back reef Coral Debris Seasonal Chemical Variations

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Correlation between Mortality of Prehospital Trauma Patients and Their Heart rate Complexity

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International Journal of Clinical Medicine 2012年第7期3卷 569-574页

作者： Gholamhussian Erjaee ali Foroutan Sara Keshtkar Pegah ShojaMozafar alham Benabas Mathematics Department Shiraz University Shiraz Iran Shiraz University Medical School Shiraz Iran

recently, nonlinear analysis of r-to-r interval (rrI) in heart rate has brought research attention in medicine to improve predictive accuracy of medication in severely injured patients. It seems conventional vital signs information such as heart rate and blood pressure to identify critically injured patients eventually replaced by heartrate complexity (HrC) analysis to the electrocardiogram (ECG) of patients in trauma centers. In this respect, different nonlinear analysis tools such as;power spectra, entropy, fractal dimension, auto-correlation function and auto-correlation have been adapted for this complexity analysis of ECG signal. reidbord and redington [1] were one of the early reports on applications of nonlinear analysis of the heart physiology. Moody and his colleagues could confidently predicted survival in heart failure cases by use of fully automated methods for deriving nonlinear and conventional indices of heart rate dynamics [2]. Further studies were reported in cases of arrhythmia or general anesthesia by Pomfrett [3], Fortrat [4], Lass [5] and references therein. recently, noteworthy works of Batchinsky and coworkers have shown that prehospital loss of rrI complexity is associated with mortality in trauma patients [6-8]. They have also shown that prediction of trauma survival by analysis of heart rate complexity is even possible by reducing data set size from 800-beat to 200 or lower beat data sets. In this article, we will use different data nonlinear analysis tools such as;power spectrum, entropy, Lyapunov exponent, capacity dimension and correlation function to analyze HrC as a sensitive indictor of physiologic deterioration. In these analyses, we will use real data of 270-beat sections of ECG from 45 emergency patients brought to Shiraz rejaee Hospetal trauma center prior to any medication. As we can see, using some manipulation on raw data will provide more informative vital signs in our nonlinear analyses.

关键词： Nonlinear Analysis of Complex Data Electrocardiography Trauma Patients

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