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The aim of this study was to determine the traits in peculiar species which most influence their survivability during early growth and development. Eight representative plant species typical for four non-afforested habitats of river valleys were tested. The results showed that for the restoration of natural habitats, the following species are best suited: Allium angulosum (Cnidion dubii, 6440) due...
Celem pracy było opracowanie typowego kształtu górnego obrysu strumienia trapezowego progu gabionowego ze szczelnym ekranem na skarpie górnej. Opracowano zredukowane współrzędne górnego obrysu strumienia trapezowego progu gabionowego ze szczelnym ekranem na skarpie górnej. Rzędne punktów obrysu zredukowano względem wysokości warstwy wody górnej nad koroną przelewu skarpowego. Odcięte punktów obrysu...
Most of environmental benefits of green roofs results from the presence of a vegetation layer. However vascular plants quickly die in harsh urban conditions. This paper presents research involving moss species appearing spontaneously on green roofs in cities to test whether we can create a vegetation layer with simplified structure introducing that moss. It was checked using two transplant methods...
The aim of the work is to evaluate thermal sensations based on the average daily temperature of air and to determine thermal stimuli, using interdependent variability of air temperature (average, maximum and minimum). The data from the weather station Ursynów – SGGW was used for the analysis in the period 1961–2016. The analysis showed that with the highest frequency (74%) there are thermal sensations...
The environmental and landscape values of the Kraska River Valley as the typical example of small lowland water flow path were analysed. The WULS-SGGW method, allowing to the estimation of whole valley reach as well as its peculiar eco-morphological zones, was used. The unregulated, regulated in the years 1990–2012 and continuously maintained from the year 2015 reaches are present in the valley. It...
Powiązanie działań planistycznych z procesem inwestycyjnym jest nierozerwalne. Możliwość uzyskania pozwolenia na budowę jest bezpośrednio powiązana z istnieniem dla danego obszaru obowiązującego planu zagospodarowania przestrzennego (MPZP) bądź wydaniem pozytywnej decyzji o warunkach zabudowy i zagospodarowania terenu (WZ). W kontekście rozwoju przestrzennego intensywność opracowywania MPZP i wydawania...
This study assesses groundwater quality GWQ at the east side of Mosul city for different purposes during 2014–2017. Eighteen shallow wells distributed in residential areas are selected and assessed by analyzing their physical, chemical and biological properties. This study reviews the textures of sub-layers by using groundwater modelling system (GMS) to show the probability of infiltration of nearby...
Fast-response observations of three components of wind and air temperature have been applied to calculate the refractive index function coefficient (C2µ ), which is needed to describe optical wave propagation in a turbulent medium. These were measured by 3D ultrasonic anemometer installed on the roof of the building of Atmospheric Science Department which is 19 m above ground level. Refractive index...
The aim of this study was to establish the correlation between natural water pollutions and the prevalence of heart diseases. We analyzed the data from the 2014 Federal Service Report on the state of sanitary and epidemiological welfare of the population. The correlation analysis of data on mortality and primary morbidity of the population was carried out, the correlation between the quality of natural...
W artykule przedstawiono wyniki badań doświadczalnych wyznaczania współczynnika przewodzenia ciepła (?) gipsu. Podczas pomiarów wykorzystano metodę „gorącej nici”, która należy do jednej z najbardziej interesujących metod z powodu swojej prostoty, łatwości realizacji oraz dokładności. W pomiarach wykorzystano platynowy czujnik Pt100, który z układem pomiarowym tworzy precyzyjny przetwornik pomiaru...
The paper presents the comparison of deterministic and stochastic approach for modeling the set of earthworks machinery. Simulation takes into account the normal distribution of cycle time and efficiency of machines and points out its influence for total construction works time. Results of the simulation indicate the need of identification time and efficiency deviation as a risk factor, which can...
In modern conditions, there are cardinal climate changes on the Earth as at the planetary scale, as at the regional level. According to numerous hydrometeorological characteristics and indicators, climatologists specialists concluded that Ukraine also take place significant climatic changes in the last 10–25 years. In complicated natural-technical systems, which include irrigation and drainage systems...
The papers presents the soil surface subsidence rate of drained (1967–1971) peat deposit in 1978–2015 years. The very high differences of the rate was observed on relatively small area (15 ha). The subsidence rate was observed in the range from 0.06 to 1.56 cm·year–1. The percentage loss of the peat deposit thickness in the years 1978–2015 in the analyzed area was varied and did not depend on the...
Nowadays, a significant part of cities is tackling the problems with post-mining areas. This manuscript is an original research which shows possibilities of their reclamation. The aim of the article is to present the proposal of developing the closed limestone quarry and creating a botanical garden. The proposed spatial solutions allow for creating a new, tourist and recreation space, maintaining...
Celem artykułu jest analiza przyczyn zarwania części sufitu podwieszanego. Przeprowadzono badania niszczące metalowych łączników rozporowych. Obliczono ich dopuszczalne obciążenia – admF, zgodnie z normą PN/EN 13964:2014 oraz skonfrontowano stan rzeczywisty konstrukcji z „ogólnym” schematem sufitu, którym dysponował wykonawca. Pomimo że łączniki rozporowe spełniały warunek nośności, m.in. niejednakowe...
Nonwoven geotextile have been widely used for filtration. In this paper, the clogging potential for a soil-geotextile system were assessed using laboratory tests. An ASTM modified gradient ratio test device was used to determine gradient ratio as well as soil-gradient ratio. One type of nonwoven geotextile and soil were used to simulate the conditions in drainage system. The obtained results indicate...
W okresie zagrożenia środowiska naturalnego oraz kryzysów energetycznych zrównoważony rozwój stał się główną strategią działań państw wysoko oraz średnio rozwiniętych. W budownictwie coraz częściej podejmowane są działania zmierzające do wykorzystania przy budowie małych domów jednorodzinnych niekonwencjonalnych ściennych materiałów budowlanych. Celem pracy jest wybór optymalnego materiału niekonwencjonalnego...
The creations of construction projects firstly try to achieve several specific goals. Effective projects are believed when these goals achieved. The principal concerns are to cross the downsides and defects. The stage of the performance project may be the most significant, crucial and drains of the resources through the project life cycle, its dependence on monitoring by professional in order to exceeded...
W artykule opisano role podmiotów zaangażowanych w przedsięwzięcie budowlane z uwzględnieniem czynników ryzyka związanych z podejmowaniem decyzji. Wskazano, że przedsięwzięcie budowlane mieści się w obszarze projektów inwestycyjno-budowlanych ulokowanych w otoczeniu gospodarczym i dlatego czynników ryzyka funkcjonowania przedsięwzięcia należy doszukiwać się w otoczeniu takich projektów. Przedstawiono...
Based on catalogues, the time schedule of erecting multi-storey building has been prepared. Real current conditions and the average cost of the building allows for creating the model where four variables influence NPV and maximum cash demand of a contractor erecting the building. The simulation made in the spreadsheet is the base for calculating and presenting the sensitivity analysis of each variable...
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