Stefan Ziemendorff

10 Questions 10 Answers 0 Followers

Questions related from Stefan Ziemendorff

Can anyone identify this plant?

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?

03 March 2019 7,863 14 View

Can anyone identify this plant?

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...

12 December 2018 4,217 11 View

What software (s) can you recommend for hydraulic simulations in water pipes and connections?

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?

10 October 2018 3,210 5 View

Which are the most important journals in the field of sanitary engineering in the Spanish language?

¿Cuáles son las más importantes revistas en el tema de ingeniería sanitaria (agua potable y saneamiento) en idioma castellano?

04 April 2018 7,492 3 View

Are there studies / publications on the influence of water hammers (pressure surge) on the operation of water meters?

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)?

04 April 2018 8,216 0 View

Can anyone identify the Species, Genus or Family of this catfish?

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

10 October 2016 4,845 5 View

Are there any low-cost alternatives to the UFR (Unmeasured-Flow Reducer) ?

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...

09 September 2016 6,733 2 View

Which software is recommended for phonetic transcription of languages ?

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...

08 August 2015 9,918 8 View

Are there experiences with acoustic location of illegal water connections ?

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 7,948 3 View

Are there independent evaluations, which show limitations of the use of GPR (Ground-penetrating Radar) for the detection of illegal water connections?

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 2,694 1 View