Are there studies / publications on the influence of water hammers (pressure surge) on the operation of water customer meters, especially single and multiple jet meters (meter inaccuracies)?
In the humid montane forest in the province Luya, department of Amazonas, Peru at about 2000 m.a.s.l. i took a picture of this strange looking sprout. Someone knows what plant it is?
02 March 2019 7,904 14 View
Recently I took some photos of this interesting plant in northern Peru (3500 metres above sea level, near Kuelap). Could you please help me to identify the species, genus and family? Thank you...
11 December 2018 4,256 11 View
What is the software indicated to make a hydraulic simulation of water hammers (with a precision of hundredth of seconds) in a domiciliary water connection?
09 October 2018 3,242 5 View
¿Cuáles son las más importantes revistas en el tema de ingeniería sanitaria (agua potable y saneamiento) en idioma castellano?
03 April 2018 7,524 3 View
Recently I took some photos of this catfish in a cave in the northern Peruvian Andes. Can anyone identify the Species, Genus or Family? Thank you very much ! Stefan
09 October 2016 4,897 5 View
Recently I read about the Unmeasured-Flow Reducer (UFR) produced by AY McDonald to reduce the under-registration of low flow rates in water meters. The problem is that the device is quite...
08 September 2016 6,765 2 View
I am looking for a software to support phonetic transcription of a sound recording in a phonetically undocumented language. I have heard about PRAAT, but I wonder if there is a software that can...
07 August 2015 9,958 8 View
Much is touted about the use of GPR for the detection of illegal water connections. But: Is there any independent evaluation, which also exposes the limitations and problems of the use of GPR for...
01 January 1970 2,721 1 View
Currently we are trying to locate clandestine (illegal) water connections by acoustic location of plastic pipes in Moquegua (Peru). Are there any known experiences of this kind ?
01 January 1970 7,980 3 View
Approximate concentrations are require in compared with the WHO permissible limts
11 August 2024 2,723 1 View
I am developing a predictive model for a water supply network that involves 20 influencing points. However, I only have historical data for 10 out of these 20 points. I would like to know how to...
10 August 2024 4,005 2 View
How do interactions between the biosphere, the carbon cycle, and the water cycle impact global warming and interaction between the atmosphere and the hydrosphere?
09 August 2024 3,291 2 View
One can try to generalize the Vandermonde determinant in the following direction: Let $A$ be any symmetric $n$-order square matrix. Consider its powers' diagonal elements $(A^k)_{ii}$ and...
08 August 2024 6,690 1 View
I have been getting a low plasma and no coating while doing rf sputtering of copper doped ZnS using a power of 140 watts and at pressure of 6.5x10-3 Mb.
07 August 2024 4,526 4 View
Air moisture harvesting Air water collection devices
06 August 2024 5,473 2 View
Hello, I suspect that a molecule I am using is causing bacteria to experience osmotic shock. What chemical properties should I look for to compare this capability with those of other substances?...
06 August 2024 977 1 View
To compare positive and negative cell populations in flow cytometry, should I compare unstained cells with antibody stained cells? Or with the isotype control? Most papers show comparison with...
06 August 2024 6,728 6 View
Women, on the other hand, can become physically aroused (increased blood flow in the reproductive organs) without becoming psychologically aroused even in the slightest. (Robert Weiss)
05 August 2024 9,537 2 View
Dear all, I am working on analyzing data from a survey on student satisfaction. The survey contains items with a 7-point Likert response format that produce 12 scales related to different areas...
05 August 2024 2,141 4 View