نتایج جستجو برای: ornamental stone

تعداد نتایج: 30941  

Journal: :Environmental Earth Sciences 2022

Abstract The steadily increasing demand on the natural stone market is accompanied by a predominantly poor economic balance in extraction of raw material "ornamental stone". Thus, net production blocks far too low relation to resulting overburden, which often result insufficient geoscientific input and evaluation deposit itself deposit-controlling factors. Under these conditions, investigation ...

2015
Lindsay L. Farrell Clemens Küpper Terry Burke David B. Lank

Sequence variation in the melanocortin-1 receptor (MC1R) gene explains color morph variation in several species of birds and mammals. Ruffs (Philomachus pugnax) exhibit major dark/light color differences in melanin-based male breeding plumage which is closely associated with alternative reproductive behavior. A previous study identified a microsatellite marker (Ppu020) near the MC1R locus assoc...

2016
Lin Wu Nan Ma Yangchao Jia Yi Zhang Ming Feng Cai-Zhong Jiang Chao Ma

Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, Department of Ornamental Horticulture, China Agricultural University, Beijing 100193, PR China (L.W., N.M., Y.J., Y.Z., M.F., J.G.); Crops Pathology and Genetic Research Unit, United States Department of Agriculture Agricultural Research Service, Davis, California 95616 (C.-Z.J.); and Department of Plant Sciences, Un...

Journal: :Geoheritage 2023

Abstract Red Ereño is a red-stained ornamental and construction limestone with characteristic white fossil shells. Although exploited since Roman times, marketed worldwide that the rock itself its outcrop areas have been included in geological heritage inventories, origin of reddish colour remained unresolved. The aim this work to deepen scientific knowledge as basis for understanding character...

Journal: :RA journal of applied research 2022

The genus Paeonia (Paeoniaceae) includes perennial plants distributed throughout the northern hemisphere and some of these are used in traditional medicine cultivated as ornamental species. broteri is endemic to Iberian Peninsula current paper first report on a pharmacognostic survey its roots, leaves corresponding powders. Using light scanning electron microscopy, simple compound polyhedral st...

Journal: :Journal of building engineering 2022

In the field of stone conservation, a very common direct intervention seeks to increase water repellence objects. By limiting interaction between solid and water, possibility alteration due action (liquid or solid) as well that related colonisation surfaces by organisms is reduced. To decrease wettability, chemicals are often applied create surface layer; however, laser texturing, currently use...

Journal: :آب و خاک 0
مسعود داوری مهدی همایی

abstract soil contamination by heavy metals is yet one of the most important environmental concerns. among heavy metals, nickel and cadmium have dangerous influences on human, animals and plants. the objective of this study was to derive a new model for simultaneous phytoextraction of ni and cd from contaminated soils. consequently, a macroscopic model was derived by combining yield reduction f...

Journal: :Heritage 2023

The long-term endurance of building stones must be assured since their longevity has repercussions for economic and social value. Frequently, slabs flooring cladding are installed with polished finishing in outdoor environments technical ornamental purposes cultural heritage sites modern civil architecture. Compared to any other finishing, glossy surfaces rather vulnerable wear, particularly wh...

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