نتایج جستجو برای: geomorphological shapes and forms

تعداد نتایج: 16849632  

Journal: :American journal of botany 2003
Johan Gielis

To study forms in plants and other living organisms, several mathematical tools are available, most of which are general tools that do not take into account valuable biological information. In this report I present a new geometrical approach for modeling and understanding various abstract, natural, and man-made shapes. Starting from the concept of the circle, I show that a large variety of shap...

Journal: :iranian journal of pharmaceutical research 0
alen shahbazian department of medicinal chemistry, pharmaceutical sciences branch, islamic azad university, tehran, iran. asghar davood department of medicinal chemistry, pharmaceutical sciences branch, islamic azad university, tehran, iran alireza dabirsiaghi department of pharmaceutical sciences, pharmaceutical sciences branch, islamic azad university, tehran, iran.

piroxicam has two different crystalline forms (known as needle and cubic forms), that they are different in physicochemical properties such as biological solubility. in the current research, using taguchi experimental design approach the influences of five operating variables on formation of the piroxicam polymorph shapes in recrystallization were studied. the variables include type of solvent,...

2007
ZAKI MALLASI

Computer generated 3D forms using generative procedures have matured in the last decade and now considered as a tangible approach for realizing architectural design ideas. As fascinating as the approach might be, it is still lacking actual application in the early architectural design process. There are many reasons for this, among them: it has many implications over the architectural design pr...

2011
Richard Bezin Benoît Crespin Xavier Skapin Olivier Terraz Philippe Meseure

Geomorphological processes sculpt the shape of our everyday landscapes and must therefore be simulated to generate plausible digital landscapes. In particular, topological changes must be taken into account during the formation of complex geometries such as natural arches, bridges or tunnels. We present a novel approach to simulate the geomorphological evolution of a 3D terrain represented as a...

2014
Qiusheng Wu Yige Gao Hongxing Liu

Coastal geomorphological change analysis based on big LiDAR remote sensing data Hongxing Liu, Qiusheng Wu, and Yige Gao

2006
Andrew S. Goudie

Future global warming has a number of implications for fluvial geomorphology because of changes in such phenomena as rates of evapotranspiration, precipitation characteristics, plant distributions, plant stomatal closure, sea levels, glacier and permafrost melting, and human responses. Potential changes in rivers are outlined in this review in the context of changes in the intensity of rainfall...

زیرجانی‌زاده, صدیقه ,

Recently Gonabad, south of Khorasan Razavi Province,  in eastern Iran is affected by dust storm phenomena. To determine the physical and chemical characteristics of dust particles and their role in environmental pollution, 9 samples were collected for XRF, XRD, SEM and  EDX micro analysis. XRD analysis showed that most of mineralogical composition comprise tectosilicates (quartz and alkali feld...

2016
Larissa A. Naylor Tom Spencer Stuart N. Lane Stephen E. Darby Francis J. Magilligan Mark G. Macklin Iris Möller

The increasing frequency and/or severity of extreme climate events are becoming increasingly apparent over multidecadal timescales at the global scale, albeit with relatively low scientific confidence. At the regional scale, scientific confidence in the future trends of extreme event likelihood is stronger, although the trends are spatially variable. Confidence in these extreme climate risks is...

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