Results 1 to 10 of about 1,114,899 (313)

Leak Detection in Plastic Water Supply Pipes with a High Signal-to-Noise Ratio Accelerometer [PDF]

open access: goldMeasurement + Control, 2018
A method for detecting leaks in plastic water supply pipes through analysis of the pipe’s surface vibration using a high signal-to-noise ratio accelerometer is proposed and examined.
Konstantinos Marmarokopos   +3 more
doaj   +3 more sources

Aflaj’s Irrigation Water Demand/Supply Ratio: Two Case Studies

open access: diamondJournal of Agricultural and Marine Sciences, 2006
Due to the geographical location of Oman in an arid zone, agricultural production depends fully on irrigation. The traditional irrigation systems (Aflaj, sing. falaj) supply more than one third of water for agriculture. Falaj is defined in the context of
Abdullah Al-Ghafri
doaj   +4 more sources

Supply Demand Ratio and Water Utilization Index in Jurala Project Command Area, Andhra Pradesh, India [PDF]

open access: diamondInternational Journal of Bio-Resource and Stress Management, 2014
The Priyadarsini Jurala Project (PJP) is a multipurpose project constructed across the river Krishna, near Revulapalli village, mainly designed to irrigate low water requirement crops in the drought prone area of Mahabubnagar district, Andhra Pradesh ...
T. L. Neelima   +5 more
doaj   +3 more sources

Mixed nitrate and ammonium supply improves maize growth and leaf water status by regulating concentration ratios of phytohormones in the xylem sap [PDF]

open access: green, 2023
Abstract The use of mixed nitrate and ammonium supply (mixed-N) as a nitrogen source can improve plant growth. Phytohormones in the xylem sap are involved in root-shoot signaling and regulation of plant growth and development. However, the role of xylem sap phytohormones in the shoot growth with mixed-N supply is poorly understood.
Mengqi Wu   +10 more
openaire   +2 more sources

Application of stable isotope ratios in drinking water supply system of Ljubljana, Slovenia

open access: gold, 2020
<p>The key to understand the deterioration of the quality of urban water resources is to know the impact of urbanization on the entire waterway, which can change dramatically during the extreme climatic events. Various geochemical parameters, including stable isotope ratios of light elements (H, O, C), represent an important tool
Polona Vreča   +4 more
openaire   +2 more sources

Ecological Correlation Studies on Standardized Incidence Ratios of Malignant Neoplasms Contracted from Different Sources of Drinking Water Supply.

open access: diamondNippon Eiseigaku Zasshi (Japanese Journal of Hygiene), 1999
Ecological correlation analysis was made between the source of drinking water and standardized incidence ratios (SIRs) of malignant neoplasms registered in Niigata, Japan. The purpose of this study was to find out some clues for generating a working hypothesis that the contamination of drinking water with environmental chemicals especially of endocrine
M, Yamamoto   +3 more
openaire   +4 more sources

Effects of mycorrhizal inoculant, N:P supply ratio, and water depth on the growth and biomass allocation of three wetland plant species [PDF]

open access: closedCanadian Journal of Botany, 2005
In the greenhouse, we investigated the growth and biomass allocation of three juvenile wetland species ( Carex tribuloides Wahl., Phalaris arundinacea L., and Rumex orbiculatus Gray) under three different water depths (–4, 0, and +2 cm relative to the soil surface), three N:P supply ratios (1:30, 1:1, 30:1), and two mycorrhizal inoculant treatments ...
Lauchlan H. Fraser, Larry M. Feinstein
openaire   +2 more sources

On the optimal ratio of surface and groundwater in water supply of the population in Ukraine

open access: yesМінеральні ресурси України
The Law of Ukraine “On Drinking Water, Drinking Water Supply and Sewage” contains a norm regarding “observance of an optimal balance of surface and groundwater use for drinking water supply”, although it is not defined exactly what this balance should be.
V. M. Shestopalov, N. G. Lyuta
doaj   +2 more sources

The effect of cooling rate and supplying water condition on the freezing properties of silty clay in seasonal freezing zones. [PDF]

open access: yesPLoS ONE
A unidirectional freezing experiment was performed on silty clay from the Changchun area using a custom freezing apparatus to examine temperature variations, frost deformation, and moisture migration within the soil samples.
Haotian Guo   +5 more
doaj   +2 more sources

Increased water supply promotes photosynthesis, C/N ratio, and plantamajoside accumulation in the medicinal plant Plantago depressa Willd

open access: closedPhotosynthetica, 2016
Anthropogenic activities are changing global precipitation regimes and result in many middle latitude arid and semiarid regions experiencing less precipitation and more extreme weather events. However, little is known about the response of active ingredient accumulation in the medicinal herb Plantago depressa Willd.
Z. Li, W. Bai, L. Zhang, L. Li
openaire   +2 more sources

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