Search results for "Distribution"

Water quality analysis in network and private storage tanks in intermittent distribution systems

2012

In countries suffering from chronic water shortages, water distribution systems are often operated on an intermittent basis. As a consequence, the network is involved by cyclical filling and emptying periods causing water quality degradation. During the emptying period, the distribution system is unpressurised and it may occur that pollutants move into the network. Moreover, the stagnation period can promote microbial growth. For this reason water is usually heavily chlorinated in order to maintain it potable. Due to intermittent water service users acquire private tanks, which are used for collecting water during serviced periods and distributing it when public service is not available. Th…

Estimation of chlorine residual in a drinking water distribution system.

2006

Potametum pectinati Carstensen 1955 (Potametea class) in the limnocren karst spring, first location in Poland

2017

Naturalne zbiorniki wodne są w Europie bardzo cennymi obszarami pod względem florystycznym. Wśród nich ważne dla zachowania różnorodności biologicznej flory w Polsce są źródła. Niniejsza praca przedstawia pierwsze w Polsce stanowisko Potametum pectinati Carstensen 1955 z klasy Potametea w limnokrenowym źródle krasowym. Dotychczas zespól ten nie był notowany w tego typu siedlisku w Europie. W artykule przedstawiono skład florystyczny i wymagania ekologiczne tego zespołu.

Habitat area and local habitat conditions outweigh fragmentation effects on insect communities in vineyards

2022

Fragmentation of habitat, for example by intensive agricultural practices, can be detrimental to local biodiversity. However, it often remains unclear whether such biodiversity declines are caused by loss of habitat area or increased fragmentation, and how habitat quality factors into it. In our study system, vegetated vineyards are typically small, and isolated from one another, potentially limiting the distribution and dispersal of organisms. In a full-factorial experiment of a priori selected vegetated vineyard patches of differing size and fragmentation, we aimed to disentangle the effects of habitat area (area of vegetated vineyards), habitat fragmentation (number of vegetated vineyard…

Estimation of wind velocity over a complex terrain using the Generalized Mapping Regressor

2010

Abstract Wind energy evaluation is an important goal in the conversion of energy systems to more environmentally friendly solutions. In this paper, we present a novel approach to wind speed spatial estimation on the isle of Sicily (Italy): an incremental self-organizing neural network (Generalized Mapping Regressor – GMR) is coupled with exploratory data analysis techniques in order to obtain a map of the spatial distribution of the average wind speed over the entire region. First, the topographic surface of the island was modelled using two different neural techniques and by exploiting the information extracted from a digital elevation model of the region. Then, GMR was used for automatic …

New floristic data of alien vascular plants from Sicily

2019

New records of Commelina communis, Euphorbia hypericifolia, Melia azedarach, Nicotiana tabacum, and Xanthoceras sorbifolium are reported for the Sicilian flora.

Grunts granulometriskā sastāva un fizikālo īpašību interpretācijas iespējas pēc statiskās zondēšanas datiem

2015

Rimšelis, M. „Grunts granulometriskā sastāva un fizikālo īpašību interpretācijas iespējas pēc statiskās zondēšanas datiem”. Bakalaura darbs. Rīga, Latvijas Universitāte, Ģeogrāfijas un Zemes zinātņu fakultāte, 2015. Bakalaura darba mērķis ir salīdzināt statiskās zondēšanas datus ar laboratorijā analizēto grunšu paraugu rezultātiem un novērtēt granulometriskā sastāva un fizikālo īpašību interpretācijas iespējas. Rezultāti pierāda, ka nav iespējams ar statisko zondēšanu noteikt tādus parametrus, kā grunts granulometriskais sastāvs un tādu fizikālu īpašību kā dabīgais mitrums, tomēr iegūtais berzes koeficients netieši norāda uz to mainību.

Search for scalar leptoquarks in pp collisions at $\sqrt{s}$=13 TeV with the ATLAS experiment

2016

An inclusive search for a new-physics signature of lepton-jet resonances has been performed by the ATLAS experiment. Scalar leptoquarks, pair-produced in pp collisions at s √s = 13 TeV at the large hadron collider, have been considered. An integrated luminosity of 3.2 fb-1, corresponding to the full 2015 dataset was used. First (second) generation leptoquarks were sought in events with two electrons (muons) and two or more jets. The observed event yield in each channel is consistent with Standard Model background expectations. The observed (expected) lower limits on the leptoquark mass at 95% confidence level are 1100 and 1050 GeV (1160 and 1040 GeV) for first and second generation leptoqua…