This paper reports on the unsupervised analysis of seismic signals recorded by four stations situated on the Vesuvius area in Naples, Italy. The dataset under examination is composed of earthquakes and false events like thunders, quarry blasts and man-made undersea explosions. The goal is to use these specific data for comparing the performance of three projection methods that are well known to...

In this study, the process of anthropic decay on stone materials and on the lithobiontic microbial colonization associated was investigated by means of both laboratory simulation (granite) and field experiments (dolostone ́s historical quarry), all of them stone materials traditionally used in heritage construction. A wide variety of salts including sulphates, phosphates and chlorides resulted f...

The paper presents data on quantity of sulphate, chloride and Izlokni su podaci o kolihni sulfata, klorida i metala u uzorcima metals in stone samples from the V i u r a n quarry and stone kamena iz kamenoloma Vinkuran i kamenih elemenata vanjskog blocks from the external curved wall of the Arena in Pula. It pldta Arene u Puli. Utvrdeno je da kamen iz kamenoloma has benn established that the st...

Wollastonite is a naturally occurring acicular or fibrous metasilicate used in ceramics and as a substitute for asbestos in some applications. Wollastonite fibers are rather similar in form, length, and diameter to amphibole asbestos fibers but mineralogically they are different. Dust measurements in both the Finnish limestone--wollastonite quarry and in the flotation plant yielded high concent...

In this study the effect of human urine on lithobiontic microorganisms colonizing dolostones from a historic quarry (Redueña, Madrid, Spain) was evaluated in situ by means of a field experiment. The application of the bioproduct was performed by directly spraying onto the rock surface of the quarry front during 8 weeks. After the treatment, the ultrastructure of Verrucaria nigrescens was analys...

The Upper Triassic Snyder quarry is the second-most productive theropod locality in the Chinle Group. Skull and postcranialelements, particularly tibiae, collected from the Snyder quarry during the last three field seasons demonstrate the presence of at least four individuals of two taxa. The smaller theropod strongly resembles, but is distinct from, the holotype of Eucoelophysis baldwini Sulli...

A study of the bond characteristics of carbonate aggregates was made by applyirig shear stresses to 1/8-inch thick slices of highway concrete. It was found that aggregates can be classified as strong, indeterminate, and weak relative to the matrix of the concrete, when accurate lithological cataloging of the aggregates from the source quarry section is made prior to the shear study. Definite cl...

background: respiratory problem is one of the major health hazards in dust-exposed workers; it is a major cause of morbidity and mortality all over the world. objective: to determine the prevalence of respiratory problems and lung function impairment among quarry workers in ebonyi state, nigeria. methods: respiratory problems and lung function were studied in 403 quarry workers aged 10–60 years...

This paper studies how the activity of hydraulic excavators found in Rosia quarry Jiu affects environment. For this study we chose Caterpillar 323D L and 323 D LN excavators. The took place over a period 30 days. These days have collected data on noise level PM 10 particles quarry. equipment not only helps to build better world, but also preserve environment, which is so fragile today. evolutio...