Search results for " mineral"
showing 10 items of 541 documents
The importance of association between sexsteroids deficiency, reduction of bone mineral density and falling risk in men with implications in medical …
2021
Introduction. Endocrino-metabolic rehabilitation represent one of the most complex sector in clinical medicine, regarding functional rehabilitation. Sex hormones deficiency plays an important role in the etiology of osteoporosis in men. At the same time, with age, the trophic role of androgens on muscle decreases and determines an increased frequency of falls. The objective of our study is to determine the association between sexsteroids deficiency, reduction of bone mineral density (BMD) and falling risk in men. Methods. Our retrospective cross-sectional study included 146 men aged between 65–85 years with low BMD (study group) and 121 men with normal BMD (control group). The measurement o…
Gli smaltini e intarsi a marmi mischi e tramischi
2012
Adsorption of anionic dyes onto natural, thermally and chemically modified smectite clays
2014
Abstract The aim of this study was to determine the adsorption capacity of the smectite clays (from the overburden of the lignite deposit in Belchatow) for two anionic dyes, i.e. Reactive Blue 81 (RB-81) and Direct Blue 74 (DB-74). Additionally, the influence of the thermal and chemical (acid and alkali) clay modifications on the amount of bonded dyes was investigated. The adsorption capacity of the clay (natural and modified) was different for studied dyes and depended on the initial concentration and modification type. All the modified clays adsorbed the dyes at pH>pHPZC as the negatively charged surfaces of their particles (in accordance with the formula: AOH ↔ AO- + H+) prevented the…
The skill in materials selection and processing at the Serpotta's studio during the baroque period in Palermo
2010
Characteristics of Mesozoic fluvio-lacustrine formations of the western Central African Republic (Carnot Sandstones) by means of mineralogical and ex…
1990
Abstract The so-called Carnot Sandstones, Mesozoic fluvio-lacustrine detrital formation, which stretch over an area of more than 40 000 km 2 in the western part of the Central African Republic, are made of a succession of conglomerates, sandstones and argilites which can reach 300 m in thickness. Heavy mineral analyses and quartz exoscopic studies of this detrital material allow to understand the geology of these formations. The detrital material origin: heavy mineral distribution in the lower levels indicates mostly a meridional origin with a quantitatively poor peripheral supply. The importance of the transport: quartz exoscopic observations show that the main part of the detrital materia…
Assessment of Usability of Thermal Bicarbonate Mineral Water from the “Odra-5/I” Intake in Grabin Opole Silesia (SWPoland) for Therapeutic and Prophy…
2020
Szczawy termalne należą do poszukiwanych surowców balneologicznych. Ten rodzaj wód jest cennym tworzywem wykorzystywanym w uzdrowiskach w szeroko rozumianej strategii zdrowotnej - profilaktyce i rekreacji. Odkrycie w 1983 r. szczawy termalnej w Grabinie koło Opola nastąpiło przypadkiem przy okazji wykonania odwiertu do rozpoznania budowy geologicznej krystalicznego podłoża osadów mezozoicznych i kenozoicznych. Występujące w Grabinie szczawy termalne są na obszarze bloku przedsudeckiego zjawiskiem unikalnym. Skład chemiczny, a zwłaszcza duża sumaryczna zawartość soli mineralnych wód z Grabina, wskazuje na niespotykany w skali kraju typ wody mineralnej. Zawartość składników stałych jest w nie…
Clay/Non-Ionic Surfactant Hybrid Nanocomposites
2020
This chapter gives an overview of the structural and chemical physical properties of nanocomposites formed by clay minerals and surfactants, which represent a class of materials with promising features for applications in different industrial, biomedical, and environmental applications. Due to their non-toxicity and biocompatibility, a great deal of attention is nowadays devoted to the study of non-ionic surfactants. Among them, block copolymers represent a combination of the properties of common amphiphilic molecules and long polymer chains. These macromolecules can form a great variety of supra-molecular structures generated from self-organization phenomena in aqueous media. Nanostructure…
Musurgia Naturalis
2009
La musurgia universalis può dividersi in naturalis (suoni e rumori della natura, folklore vocale) e musurgia artificialis (suoni e rumori non intenzionali causati dal lavoro umano, tutta la musica strumentale e la musica d'arte). La musica dei Pigmei Ba-Benzele come esempio di musica affatto naturale. La musica di due compositori contemporanei come musica artificiale, ma germinante dalla natura: vegetale quella di Giovanni Damiani; animale/umana quella di Federico Incardona.
Potenzialità della tipologia produttiva del fuori suolo nel comparto dell'uva da tavola
Beitrag zur Kenntnis der optischen Eigenschaften des gesteinsbildenden Chondrodits von Pargas
1927
Kandidāta darbs