scholarly journals Przyrodnicze i antropogeniczne uwarunkowania funkcjonowania krajobrazu równiny łowicko-błońskiej na przykładzie fragmentu Gongolina-Pawłowice

2021 ◽  
Vol 66 (3) ◽  
pp. 47-62
Author(s):  
Agnieszka Sosnowska ◽  
Tomasz Grabowski ◽  
Andrzej Harasimiuk
Keyword(s):  
Natural Environment ◽  
Environmental Conditions ◽  
Drainage System ◽  
Late Glacial ◽  
Parent Material ◽  
Water Drainage ◽  
Natural Basis ◽  
Current State ◽  
Artificial Water

The Łowicz-Błonie Plain is a flat and monotonous part of the late-glacial landscape. The parent material is dominated by loam, silt and clay covered with sand of various thickness. The main aim of the study was to indicate the natural and anthropogenic determinants of the fertile plain landscape’s functions, which has been intensively used for agriculture. Natural environmental conditions are determined by the vicinity of contrasting in humidity and trophism areas. The current state of the natural environment is the result of both the natural basis and anthropogenic transformations. The biggest changes in expanding the possibilities of using the trophic potential are related to artificial water drainage system.

scholarly journals Estimation of the Hydraulic Width of the Subcatchment Depending on the Degree of Detail of the Drainage System Model

2019 ◽  
Vol 29 (4) ◽  
pp. 128-140
Author(s):  
Ireneusz Nowogoński ◽  
Ewa Ogiołda ◽  
Marcin Musielak
Keyword(s):  
Model Calibration ◽  
Drainage System ◽  
System Model ◽  
Storm Water ◽  
Water Drainage ◽  
Storm Water Management Model ◽  
Current State ◽  
In Series ◽  
Family Housing ◽  
Catchment Model

Abstract The article presents the current state of knowledge in the field of estimating preliminary values of storm water subcatchment calibration parameters in the case of using the Storm Water Management Model (SWMM) for building a model of storm water drainage system. The key issue is estimating the runoff width in the case of reducing the network structure and storm water catchments due to the shortening of calculation time and simplification of the model calibration process. Correction of one of the recommended literature methods has been proposed. The assessment was based on the real catchment model with single and multi-family housing. It was found possible to apply the proposed method in the case of reducing systems connected in series.

Digestion in the tsetse fly Glossina morsitans Westw.: the effect of feeding field-caught flies on guineapigs in the laboratory

1967 ◽  
Vol 57 (3) ◽  
pp. 447-450 ◽  
Author(s):  
P. A. Langley
Keyword(s):  
Natural Environment ◽  
Environmental Conditions ◽  
Tsetse Fly ◽  
Rapid Loss ◽  
Glossina Morsitans ◽  
The Third ◽  
Laboratory Conditions ◽  
Effect Of Feeding ◽  
Blood Meals

It has been shown that adults of Glossina morsitans Westw. that have fed from a bait ox in their natural environment digest their blood meals more rapidly than others that have emerged and been fed in the laboratory, even when both are maintained under identical environmental conditions after feeding.In further experiments with G. morsitans in Rhodesia, flies caught in the field and fed in the laboratory were found to lose their ability to digest their meals rapidly. Measurements, made throughout three hunger cycles, of the rate of digestion, as reflected in the rate of excretion, of blood meals by field-caught flies fed on guineapigs in the laboratory showed that this was not significantly different from that of the normal, flied-fed flies during the first two hunger cycles but that during the third it fell to a level comparable to that of flise that emerged and were fed in the laboratory.It is concluded that whatever may be the events that condition the field flies to digest their meals rapidly in the natural environment, these are repeated with the ingestion of each meal, and that laboratory conditions cause a rapid loss of this greater digestive capability.

scholarly journals Its present state overmoistened landscape systems of Lviv Region

2014 ◽  
pp. 347-354
Author(s):  
N. Blazhko
Keyword(s):  
Key Words ◽  
Present State ◽  
Environmental Conditions ◽  
Ecological Status ◽  
Ecological Condition ◽  
Wetland Landscape ◽  
Current State ◽  
Destabilizing Factors ◽  
Good Ecological Status ◽  
Stabilizing Factors

Reviewed the current state of wetland landscape systems (PLC) Lviv region. Highlighted areas PLC of good ecological status, with a satisfactory ecological condition and unsatisfactory environmental conditions. Key words: overmoistened landscape systems (OLS)peat, peat, drainage improvement, environmental stabilizing factors, environmental destabilizing factors.

Learning from Incidents - Oily Water Drainage System

2018 ◽  
Author(s):  
Kuriakose Mathew Molelputhenpura ◽  
Khalid Adel ◽  
Ibrahim Al Awadhi
Keyword(s):  
Drainage System ◽  
Water Drainage ◽  
Oily Water

scholarly journals Simulation studies of storm water drainage in Wrocław

2018 ◽  
Vol 44 ◽  
pp. 00129
Author(s):  
Monika Nowakowska
Keyword(s):  
Hydrodynamic Model ◽  
Drainage System ◽  
Storm Water ◽  
Simulation Studies ◽  
Water Drainage ◽  
Residential Areas ◽  
Residential Communities ◽  
Flood Volume ◽  
Maximum Water ◽  
Water Impoundment

In the paper were made the verification of the operation of a rainwater drainage system in the residential communities of Gaj and Tarnogaj in Wrocław, carried out in the hydrodynamic model using SWMM software. There were used two criterial precipitation: Euler’s model (with a frequency of C = 3 years) and the actual precipitation (C = 5 years). The criteria of overloading the system was the specific flood volume (SFV). For both cases of precipitation load of catchment, the simulated calculations showed the occurrence of outflows from the channels. Due to the value of SFV indicator (respectively: 19 m3/ha and 42,9 m3/ha), it was found that the tested system needs modernization, therefor acceptable instantaneous water level above the maximum water impoundment were more often than 1 per 3 years, which leads to overflows from channels for residential areas more often than allowed once every 20 years.

scholarly journals A cross-validated three-dimensional model of an englacial and subglacial drainage system in a High-Arctic glacier

2020 ◽  
Vol 66 (256) ◽  
pp. 278-290
Author(s):  
Lena U. Hansen ◽  
Jan A. Piotrowski ◽  
Douglas I. Benn ◽  
Heidi Sevestre
Keyword(s):  
Three Dimensional ◽  
Drainage System ◽  
High Arctic ◽  
Water Drainage ◽  
Three Dimensional Model ◽  
Closure Mechanism ◽  
Ground Penetrating ◽  
Arctic Glacier ◽  
D Model ◽  
Englacial Drainage

AbstractRecent speleological surveys of meltwater drainage systems in cold and polythermal glaciers have documented dynamic englacial and in some cases subglacial conduits formed by the ‘cut-and-closure’ mechanism. Investigations of the spatial distribution of such conduits often require a combination of different methods. Here, we studied the englacial drainage system in the cold glacier Longyearbreen, Svalbard by combining speleological exploration of a 478 m long meltwater conduit with a high-resolution ground penetrating radar (GPR) survey with two different centre-frequencies (25 and 100 MHz). The results yielded a 3-D documentation of the present englacial drainage system. The study shows that the overall form of englacial conduits can be detected from velocity−depth converted GPR data, and that the 3-D model can facilitate a method to pinpoint the reflections in a radargram corresponding with the englacial drainage system, although fine detail cannot be resolved. Visible reflections approximately parallel to the mapped englacial water drainage system likely result from sediment incorporated in the ice or from abandoned parts of the englacial drainage system.

TECHNICAL INFRASTRUCTURE OF THE NOWA SOL RURAL COMMUNE IN THE LIGHT OF SUSTAINABLE DEVELOPMENT

2018 ◽  
Vol 171 (51) ◽  
pp. 4-13
Author(s):  
Jakub Kostecki ◽  
Urszula Kołodziejczyk ◽  
Mariusz Augustyniak
Keyword(s):  
Sustainable Development ◽  
Natural Environment ◽  
Environmental Resources ◽  
Equal Rights ◽  
Current State

Sustainable development is a synonymous for the coexistence of man with the environment on equal rights. The progressing urbanization often leads to depletion of environmental resources and puts man above the natural environment. The paper attempts to analyse the current state and possibilities of development of technical infrastructure of the rural commune Nowa Sol, Lubuskie voivodeship, in the light of sustainable development.

scholarly journals The beidellite clays from the Bełchatów lignite deposit as a raw material for constructing waterproofing barriers

2017 ◽  
Vol 33 (2) ◽  
pp. 53-67 ◽  
Author(s):  
Tadeusz Ratajczak ◽  
Elżbieta Hycnar ◽  
Piotr Bożęcki
Keyword(s):  
Mechanical Properties ◽  
Surface Waters ◽  
Natural Environment ◽  
Environmental Engineering ◽  
Raw Material ◽  
Underground Waters ◽  
Physico Chemical ◽  
Clay Rocks ◽  
Significant Distance ◽  
Artificial Water

Abstract Disposal sites for both industrial and communal waste are hazardous for the natural environment due to the accumulated materials and their chemical, physical and biological transformations. The products of these processes migrating at a significant distance contaminate mainly underground waters, surface waters and soils. The spreading of the pollutants may be prevented by horizons of clay rocks that form natural geological barriers. The clay rocks of properly selected parameters may be used in the environmental engineering for constructing artificial water-sealing layers. The mineral, chemical, physico-chemical and physico-mechanical properties of the beidellite clays occurring within the lignite deposit in Bełchatów were studied to find out whether they meet the criteria of waterproofing engineering contained in the Polish recommendations and instructions. The results indicate that the beidellite clays of Bełchatów are rocks suitable for this kind of environmental engineering and may be used in constructing the barriers preventing the migration of effluents from landfills.

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