Decay effects associated with soluble salts on granite buildings of Braga (NW Portugal)

2000 ◽  
Author(s):  
C. A. S. Alves ◽  
M. A. Sequeira Braga
Keyword(s):  
Soluble Salts ◽  
Nw Portugal

Potential anticonvulsants: Substituted N-benzylidene derivatives of 10-(4-aminopiperazino)-10,11-dihydrodibenzo[b,f]thiepins

1983 ◽  
Vol 48 (4) ◽  
pp. 1173-1186 ◽  
Author(s):  
Václav Bártl ◽  
Jiří Holubek ◽  
Emil Svátek ◽  
Marie Bartošová ◽  
Miroslav Protiva
Keyword(s):  
Acute Toxicity ◽  
Water Soluble ◽  
Hypotensive Activity ◽  
Anticonvulsant Effect ◽  
Maximal Electroshock ◽  
Soluble Salts ◽  
Sleeping Time ◽  
Central Depression ◽  
Derivatives Of ◽  
Electroshock Seizures

Reactions of 10-(4-aminopiperazino)-10,11-dihydrodibenzo[b,f]thiepins XIVa-XIVd with benzaldehyde, 3,4-dimethoxybenzaldehyde, 4-dimethylaminobenzaldehyde, salicylaldehyde, 3-ethoxy-4-hydroxybenzaldehyde, 2-(2-dimethylaminoethoxy)benzaldehyde, 3-(2-dimethylaminoethoxy)benzaldehyde and 3-ethoxy-4-(2-dimethylaminoethoxy)benzaldehyde afforded a series of 19 hydrazones IIIa-Xc. Some of them showed the expected anticonvulsant effect but only towards pentetrazole; antagonism of maximal electroshock seizures was not observed. In general, the products have a character of tranquillizers: in higher does they produce central depression, potentiate the thiopental sleeping time, have hypothermic action; in single cases antiamphetamine, antireserpine, antihistamine and cataleptic effects were observed. The water-soluble salts of the basic hydrazones VIIIa, VIIIc, IXc and Xc, administered parenterally, showed a rather high acute toxicity and revealed also adrenolytic and hypotensive activity.

scholarly journals Soluble Salts Quantitative Characterization and Thermodynamic Modeling on Roman Bricks to Assess the Origin of Their Formation

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2866
Author(s):  
Claudia Scatigno ◽  
Nagore Prieto-Taboada ◽  
Giulia Festa ◽  
Juan Manuel Madariaga
Keyword(s):  
Archaeological Site ◽  
Risk Level ◽  
Salt Weathering ◽  
Soluble Salts ◽  
High Concentration ◽  
Quantitative Characterization ◽  
Chromatography Analysis ◽  
Acidic Gases ◽  
Hygroscopic Moisture ◽  
Ostia Antica

The environmental weathering and the formation of efflorescences on the brick walls are studied at the “Casa di Diana” Mithraeum at Ostia Antica archaeological site. Previous studies on subsoil, bedrock, hydrological systems and environmental conditions, and new ion chromatography analysis combined with ECOS-RUNSALT and Medusa-Hydra thermodynamic modelling software, had allowed us to identify the subsoil contamination related to soluble salts. The atmospheric acidic gases, CO2 and SO2, are determined as the main salt weathering species. A dry deposition after a subsequent hydration action from the shallow freshwater aquifer that reaches up to 1 m on the walls is identified as the mechanism of salt formation. An evaluation of potential sources such as the nearby Fiumicino airport, CO2-rich gases inputs from fumaroles and CO2 inputs was also debated. The risk level of contamination the surfaces of the materials should be considered mildly/very polluted with a medium/high risk of hygroscopic moisture due to the high concentration of sulphates.

Excess Soluble Salts in Humid Soils 1

1917 ◽  
Vol 9 (6) ◽  
pp. 297-301 ◽  
Author(s):  
S. D. Conner
Keyword(s):  
Soluble Salts

Population structure and dynamics of the freshwater shrimp Atyaephyra desmarestii (Millet, 1831) in the lower River Minho (NW Portugal)

Crustaceana ◽  
2015 ◽  
Vol 88 (6) ◽  
pp. 657-673 ◽  
Author(s):  
Maria L. Fidalgo ◽  
Paulo Santos ◽  
Cláudia Ferreira ◽  
Andreia Silva
Keyword(s):  
Water Quality ◽  
Reproductive Period ◽  
Specific Knowledge ◽  
Nw Portugal ◽  
Ecological Relevance ◽  
Structure And Dynamics ◽  
Population Structure And Dynamics ◽  
Autumn And Winter ◽  
The Relationship ◽  
Fast Increase

This paper reports population dynamics, growth, and reproductive features ofAtyaephyra desmarestii(Millet, 1831) from the estuary of the River Minho. Also, data were compared to information available from its distribution range. Samples were taken monthly between October 2010 and September 2011. Males were less abundant and smaller than females. The growth pattern showed hardly any increase during the autumn and winter, but a fast increase in size was recorded in spring, followed by slower growth in summer. The life span was 11-12 months. The reproductive period was from April to August, and mean fecundity reached 643 ± 254 eggs/female. Juveniles started to appear in July and a strong recruitment occurred in summer and autumn. The ecological relevance of the shrimp supports the need of obtaining further and more specific knowledge on the relationship between geographical distribution and water quality. Our results coupled with longer time series in different localities will be essential to the conservation of the species.

Research into water-soluble salts in efflorescent pottery during long-term storage in a museum

2014 ◽  
Vol 89 ◽  
pp. 268-274 ◽  
Author(s):  
Pujun Jin ◽  
Weiqiang Zhang ◽  
Quanjun Wang ◽  
Xiaogang Yang ◽  
Sheng Sun ◽  
...  
Keyword(s):  
Water Soluble ◽  
Soluble Salts ◽  
Long Term Storage ◽  
Term Storage

THE EFFECT OF GROUNDWATER ON SOIL FORMATION IN A MORAINAL LANDSCAPE IN SASKATCHEWAN

1985 ◽  
Vol 65 (2) ◽  
pp. 293-307 ◽  
Author(s):  
J. J. MILLER ◽  
D. F. ACTON ◽  
R. J. ST. ARNAUD
Keyword(s):  
Groundwater Flow ◽  
Water Table ◽  
Soil Formation ◽  
Lateral Flow ◽  
Dominant Factor ◽  
Slope Position ◽  
Soluble Salts ◽  
Runoff Water ◽  
Depth To Water Table ◽  
Water Tables

The results of this study indicate the importance of groundwater flow and water table depth on the genesis, characteristics and distribution of soils within a hummocky morainal landscape. Non-saline and non-carbonated soils in upland depressions can be attributed to "depression-focused" recharge by snowmelt and snowmelt runoff in the spring, as evidenced by deep sola and/or eluvial horizons. Non-saline and carbonated soils on lower slopes adjacent to depressions are associated with local discharge and/or lateral flow from the adjacent groundwater mounds under the depressions in spring, as well as upward flow in the summer resulting from water use by phreatophytes such as willows, creating a water table depression around the slough fringes. Saline and carbonated soils at low elevations are associated with shallow and rather stable water tables, and local discharge from surrounding uplands. Soil types on uplands are more dependent on slope position and infiltration than on depth to water table or groundwater flow. Non-saline soils of different profile types occur on mid- and upper slope positions. These areas have a deep water table with mainly recharge or lateral flow occurring in the saturated zone. The infiltration of surface runoff water in upland depressions is the dominant factor influencing the distribution of soluble salts in this hummocky landscape. Key words: Water table, landscape position, recharge, discharge, soluble salts, soil genesis, morphology, carbonate soil

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