scholarly journals Origin, development factors and dynamics of landslides in Jurassic clay in Moscow

2019 ◽  
pp. 40-50
Author(s):  
Yu. A. Mamaev ◽  
S. V. Kozlovskii ◽  
A. A. Yastrebov
Keyword(s):  
Chemical Properties ◽  
Upper Jurassic ◽  
Geological Structure ◽  
Physico Chemical ◽  
Slope Structure ◽  
History Of ◽  
Landslide Slope ◽  
High Bank ◽  
The City ◽  
Archive Data

The article focuses on the factors and dynamics of development of large deep extrusion landslides in Jurassic clay participating in geological structure of high bank slopes of the Moscow River within the city boundaries. The history of geological development of territory in Meso-Cenozoic age is observed in briefly; the peculiarities of upper Jurassic clay structure are considered; the structure, composition, and physico-chemical properties of rocks are described both in preserved and weathered state; the morphology and zoning of landslide slope structure as well as stages and dynamics of landslide deformations are characterized. Recommendations on the engineering development of territories affected by landslides are given. The paper is based on the generalization of numerous publications and archive data devoted to this acute topic.

scholarly journals 1H NMR spectroscopy study of structural water in rehydrated biocomposite of Spongilla lacustris freshwater demosponge origin

2020 ◽  
Vol 126 (8) ◽  
Author(s):  
Tatiana Krupska ◽  
Marcin Wysokowski ◽  
Iaroslav Petrenko ◽  
Yuliya Khrunyk ◽  
Krzysztof Nowacki ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Chemical Properties ◽  
Model Systems ◽  
Spectroscopy Study ◽  
Structural Water ◽  
H Nmr ◽  
Physico Chemical ◽  
History Of ◽  
Model Drug ◽  
Scientific Attention

Abstract Biocomposites of sponge origin attract scientific attention due to their renewability as well as special properties. Dried skeletons of fresh water demosponge Spongilla lacustris represent unique kind of naturally occurring silica-chitin-based biocomposites with long history of their applications in dermatocosmetics. However, there is still a lack of knowledge on their physico-chemical properties in model systems. The aim of this work was to model drug systems based on S. lacustris powdered biocomposite, water and a hydrophobic medium, which served as an analog of an oil base. Both thermogravimetric analysis and 1H NMR spectroscopy study of structural water in rehydrated biocomposite lead to obtaining of interesting experimental data useful for preparation of biocosmetic products.

scholarly journals New data on geology of the Rybalsky Quarry, unique object of geological heritage of Global Significance

2021 ◽  
Vol 30 (1) ◽  
pp. 100-121
Author(s):  
Volodymyr V. Manyuk
Keyword(s):  
Thick Layer ◽  
Geological Structure ◽  
Full Data ◽  
Terra Rossa ◽  
Unique Object ◽  
The Status ◽  
History Of ◽  
Composition Structure ◽  
First Time ◽  
The City

Among the great variety of geological relics of Ukraine, one of the most attractive is the Rybalsky Quarry, located in the city of Dnipro, and well known outside Ukraine. First of all, it is famous for the Mandrykivski Layers exposed in one of the ridges of the Quarry back in the 1970s, although there are many other important peculiarities of the geological structure of the Quarry which attract scientists from Ukraine, Germany, France, Netherlands, Russia and other countries. There are full data on the history of discovery and survey of the Mandrykivski Layers from their discovery by Valerian Domger in 1882 to current studies that reveal various aspects of geological structure of the Quarry, the results of study of different groups of fossil fauna, compare them with the fauna of the Paris Upper Eocene basin and other well- known locations. Particularly in the Rybalsky Quarry, thanks to the author`s efforts, the Layers received the status of “layers with geographic name”, as confirmed by the decision of Cenozoic Commission of the National Stratigraphic Committee of Ukraine in 2001. New fragments of the section of subaerial and subaqueous deposits of the Quaternary deposits were found and their composition, structure and complete stratigraphic content were studied. The research allows us to consider it typical for the Middle Prydniprovia. Fluvioglacial and lake-glacial deposits of the Dnipro glaciations in the Quarry exposed for the second time in 25 years, but this is the first time when their genetic origin, position in the section and lithological-facies peculiarities were determined. Thick layer of sands embedded on the roof of the Mandrykivski Layers were identified to the fifth or Hadzhybeiska terrace of the Dnipro, in the upper part of which there were notable siliceous-clayey-ferruginous formations or lateral crust (ferruginous crusts). The studies of the layer of brown-green and red-brown clays in the roof of the Mandrykivski layers allows us to presume their marine origin. In this case, they are underwater weathering crust (terra rossa) developed in the process of halmyrolysis or are the product of dissolution of carbonate silt enriched with detritus of mollusks, corals and other inhabitants of the warm Mandrykivske Sea.

Water Quality Status of Some Urban Ponds of Lucknow, Uttar Pradesh

1970 ◽  
pp. 67-73 ◽  
Author(s):  
Mohd Muzamil Bhat ◽  
Taiyyaba Yazdani ◽  
Kamini Narain ◽  
Mohammad Yunus ◽  
Ravinder Nath Shukla
Keyword(s):  
Chemical Properties ◽  
Uttar Pradesh ◽  
Total Hardness ◽  
Residual Chlorine ◽  
Sources Of Pollution ◽  
Physico Chemical ◽  
Urban Ponds ◽  
Chemical Restoration ◽  
Permissible Levels ◽  
The City

This study aims to investigate the physico-chemical properties of some urban ponds in the ecological system of Lucknow which is called as the city of Nawabs in U.P. But owing to the unplanned development and urbanization, the ponds of this city are struggling for their existence. Inspite of the global alarm for restoration of the water bodies, the ponds in the city are facing neglectance. For the study period ten ponds were selected. The physico-chemical parameters of the water sampled in June 2008 from ten ponds such as PH ranged from 6.55 to 7.93; Turbidity, 6.06 NTU to 8.59 NTU; Conductivity, 12.32 ms/cm to 16.84 ms/cm; D.O., 3.72 mg/l  to 6.81 mg/l; B.O.D., 3.77 mg/l to 6.40 mg/l. Residual chlorine was detected only in pond A (1.09 mg/l), pond C (1.13 mg/l), pond E (1.04 mg/l) and in pond F (1.03 mg/l). Free CO2 was found  between 8.7 mg/l to 19.68 mg/l. TS, TDS, and Chlorides were found much beyond the permissible levels. Alkalinity ranges between 202.55 mg/l to 310.05 mg/l; Acidity between 10.75 mg/l to 15.48 mg/l; Total Hardness between 244.49 mg/l to 254.78 mg/l. Prominent sources of pollution are the domestic sewage, kitchen flow and street runoff etc. In addition, solid waste and garbage tied in polythene bags are recorded along the banks and also floating on the water surface. Key words: Lucknow; physico-chemical; restoration; sewage; Urban pondsDOI: 10.3126/jowe.v2i1.1866 Journal of Wetlands Ecology, (2009) vol. 2, pp 67-73

Assessment of Physico-chemical Properties of Different Water Reservoirs of Barishal City, Bangladesh

2021 ◽  
Vol 1 (01) ◽  
pp. 15-20
Author(s):  
MD. MAHADIY HASAN ◽  
MD. ASHIKUR RAHMAN LASKAR ◽  
TAHIDUL ISLAM ◽  
TANIA SULTANA
Keyword(s):  
Water Temperature ◽  
Electric Conductivity ◽  
Chemical Properties ◽  
Total Dissolved Solids ◽  
Water Reservoirs ◽  
Dissolved Solids ◽  
Average Water Temperature ◽  
Physico Chemical ◽  
Average Water ◽  
The City

There are many man-made water reservoirs found in Barishal City. This study was aimed to assess the existing condition of physico-chemical properties of four different water reservoirs, namely Bibir Pukur (pond), Amtala Lake, Choumatha Lake and City Corporation Pond of Barishal City of Bangladesh. To evaluate the physico-chemical properties, the average of the parameters such as water temperature, total dissolved solids, electric conductivity (EC), pH, salinity, as well as depth, color, and transparency of water were analyzed. The highest average water temperature was found in the City Corporation Pond, which determined as 31.77±0.09 °C. Electric conductivity (ms/cm) and total dissolved solids (ppm) of Amtala Lake were 0.413 ±0.009 and 199±1.15. The highest average pH 7.88±0.01 and lowest salinity 140±1.73 were found in City Corporation Pond and Choumatha Lake respectively. The water depth of Bibir Pukur was 260.33± 13.98 cm which is the highest among the four water reservoirs. The highest values of dissolved oxygen and phosphate were 2.03±0.12 mg/l and 294.12±3.92 μg/l.

scholarly journals NATURE-LEARNING AND GEO-ARCHEOLOGICAL ROUTES OF THE EASTERN PART OF LVIV

2021 ◽  
pp. 155-178
Author(s):  
Andrii Yatsyshyn ◽  
Roman Dmytruk ◽  
Andrii Havinskyi
Keyword(s):  
Anthropogenic Impact ◽  
Large Scale ◽  
Upper Cretaceous ◽  
Geological Structure ◽  
The Other ◽  
Forest Park ◽  
Complete Destruction ◽  
Geological Features ◽  
History Of ◽  
The City

Geomorphological and geological features of the eastern part of Lviv have been analyzed. A new, extremely picturesque and informative tourist, recreational and geo-educational route has been developed, namely “Chatovi Rocks – Vynnykivske Lake –Medova Pechera”, which forms an extension of “Vysokyi Zamok – Chatovi rocks” tourist route. Picturesque relief, exposure of sediments of various ages and genesis, as well as rich archeological monuments occurring along the routecan perform educational, educational, cognitive, ecological, and aesthetic functions. Archaeological memorials, little known to the general public, are extremely valuable, too, because they illustrate the history of populating the city of Lviv and its neighborhood. Mostly inanimate objects located along the route are well accessible for exploration; however, today they are not very popular among Lviv residents. This is primarily due to the lack of proper infrastructure – marked trails, information stands, etc. Anthropogenic impact on the objects located along the proposed route is extremely diverse and large-scale. Some sites (such as Chatovi Rocks and Medova Pechera) are affected heavily, as they are actively used for hiking, mountaineering, etc. Others (for example, Zhupan and Lysivka archeological monuments) virtually do not experience it. The monuments of Mlynivtsi I and II are exposed to the greatest threat, up to complete destruction. They are endangered due to the extensive construction of a new sports and recreation complex, deployed around Vynnykivsky Lake. The refore, the condition of these facilities needs to be monitored continuously. On the other hand, the said complex will open up new prospects for the use of picturesque relief, complex geomorphological and geological structure of the eastern part of Lviv in the future recreational and geo-educational activities. There is no doubt that the new center of attraction, created by the sports and recreation complex, will increase the attendance of Vynnykivsky Forest Park. Therefore, the need to establish appropriate tourist, recreational, geo-educational infrastructure along “Chatovi Rocks – Vynnykivske Lake – Medova Pechera” route is obvious today. Key words: nature-learning and geo-archeological route; Upper Cretaceous marls; Neogene sands and sandstones; woods, travertines; archeological monuments.

Decoration of specific sites on freeze-fractured membranes

1978 ◽  
Vol 36 (2) ◽  
pp. 140-141
Author(s):  
H. Gross ◽  
H. Moor
Keyword(s):  
Pure Water ◽  
Freeze Fracture ◽  
Chemical Properties ◽  
Surface Forces ◽  
Sulfate Pentahydrate ◽  
Copper Sulfate Pentahydrate ◽  
Physico Chemical ◽  
Water Of Hydration ◽  
Small Container ◽  
Binding Forces

Fracturing under ultrahigh vacuum (UHV, p ≤ 10-9 Torr) produces membrane fracture faces devoid of contamination. Such clean surfaces are a prerequisite foe studies of interactions between condensing molecules is possible and surface forces are unequally distributed, the condensate will accumulate at places with high binding forces; crystallites will arise which may be useful a probes for surface sites with specific physico-chemical properties. Specific “decoration” with crystallites can be achieved nby exposing membrane fracture faces to water vopour. A device was developed which enables the production of pure water vapour and the controlled variation of its partial pressure in an UHV freeze-fracture apparatus (Fig.1a). Under vaccum (≤ 10-3 Torr), small container filled with copper-sulfate-pentahydrate is heated with a heating coil, with the temperature controlled by means of a thermocouple. The water of hydration thereby released enters a storage vessel.

History of the City of Rome in the Middle Ages

2009 ◽  
Author(s):  
Ferdinand Gregorovius ◽  
Annie Hamilton
Keyword(s):  
Middle Ages ◽  
History Of ◽  
The City ◽  
The Middle Ages

History of the City of Rome in the Middle Ages

2009 ◽  
Author(s):  
Ferdinand Gregorovius ◽  
Annie Hamilton
Keyword(s):  
Middle Ages ◽  
History Of ◽  
The City ◽  
The Middle Ages

Ras al Khaimah: further archaeological discoveries

Antiquity ◽  
1976 ◽  
Vol 50 (200) ◽  
pp. 216-222
Author(s):  
Beatrice De Cardi
Keyword(s):  
United Arab Emirates ◽  
The State ◽  
Focused Attention ◽  
North East ◽  
The North ◽  
History Of ◽  
The City

Ras a1 Khaimah is the most northerly of the seven states comprising the United Arab Emirates and its Ruler, H. H. Sheikh Saqr bin Mohammad al-Qasimi, is keenly interested in the history of the state and its people. Survey carried out there jointly with Dr D. B. Doe in 1968 had focused attention on the site of JuIfar which lies just north of the present town of Ras a1 Khaimah (de Cardi, 1971, 230-2). Julfar was in existence in Abbasid times and its importance as an entrep6t during the sixteenth and seventeenth centuries-the Portuguese Period-is reflected by the quantity and variety of imported wares to be found among the ruins of the city. Most of the sites discovered during the survey dated from that period but a group of cairns near Ghalilah and some long gabled graves in the Shimal area to the north-east of the date-groves behind Ras a1 Khaimah (map, FIG. I) clearly represented a more distant past.

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