One of the threats for the mankind can be prevented

One of threats for mankind can be prevented David Judbarovski, systems engineering, principle inventor Background. Mapping the global threat of land subsidence 1. Gerardo Herrera-García, 2. Pablo Ezquerro, 3. Roberto Tomás, 4. Marta Béjar-Pizarro, 5. Juan López-Vinielles, 6. Mauro Rossi, 7. Rosa M. Mateos, 8. Dora Carreón-Freyre, 9. Livin in 10. Pietro Teatini, 11. Enrique Cabral-Cano, 12. Gilles Erkens, 13. Devin Galloway, 14. Wei-Chia Hung, 15. Najeebullah Kakar, 16. Michelle Sneed, 17. Luigi Tosi, 18. Hanmei Wang, 19. Shujun Ye 1. Email: g.herrera@igme.es Science 01 Jan 2021: Vol. 371, Issue 6524, pp. 34-36 DOI: 10.1126/science.abb8549 The said researchers predict after many years global investigations and scientific modeling, that to 2040 yr. 19% the world population now living in 23% of largest cities on 12 million km2 are under threat of land subsidence can ruin them, because underground water and minerals resources exploiting. Just immediately it was reacted by me in https://judbarovski.blogspot.com/2021/01 , posted on 09.01.2021 with a possible decision of the said problem, now here updated and upgraded. After geophysical investigation inside and nearby of as actual holes as abandoned ones and wells to them, in a danger we can pump pressed air into the holes to compensate load fully or partly on them from upper sides. For the following, the said air pressure can be controlled by very cheap sensor and small and cheap diaphragm compressor. Frequently large aquifers can be pumped by waste water of householders after preliminary purification, because purification of consume water from such aquifers would be much more simple and cheap than desalination of sea water.

Comments

Post a Comment

Popular posts from this blog

Progressive city-car realization and powering-Updated,#1

Progressive city-car realization and powering-Updated, #1 Author: David Judbarovski, principle inventor, retired engineer, Israel judbarovski@gmail.com   Short CV: https://www.linkedin.com/in/david-judbarovski-1390944a/ Archive since 2017 yr: http://judbarovski.blogspot.be Archive since 2006 yr.: http://judbarovski.livejournal.com [3791]-3/11/2017,   My three levels’ conception of progressive transportation was disclosed in http://www.judbarovski.blogspot.co.il/2017/05/progressive-transportation-manifesto.html  (Progressive transportation manifesto, May 02. 2017). Its first level is a city-car.   Special designed city-car is a car moved electrically and equipped by very small battery as a city-grid element, and it isn’t big news now. Such cars are to be much cheaper and simpler than conventional cars and save a lot of energy. But I can suppose strictly to reject all sorts of powering them from underground, because it is energy ineffective and creates additional
Read more

Equipment for Short Take-off and Landing (E-STOL)

Equipment for Short Take-off and Landing (E-STOL) Author: David Judbarovski, systems engineering, principle inventor judbarovski@gmail.com , Linkedin Abstract My E-STOL comprises a aerodynamic resistance of quite small area (SAR), being rigid and turnable, and a water jet device (WJD), comprising high pressure water jets in corners of quadrangular frame. The SAR can be very quickly erected or downed to turn it into additional wing-kite for short gliding in the sky. The WJD provides stabilization below stall speed and serves as start support, while landing or take-off. It is very attractive for Navy aviation, because allows high cruise speed, extremely short runway, and better reliability vs. helicopter, and we can repeat approach, if taking a portion of ambient sea water, in flight by simple pails.     The water is thrust out through the jets by gases at high pressure after ignition of “liquid vigorous combustible” (LVC), e.g. stoichiometric composition of amm
Read more

Breakthrough new fuel is better than oil

Breakthrough new fuel is better than oil David Judbarovski, systems engineering, principle inventor judbarovski@gmail.com Abstract Lithium hydride being reformed by water vapor in hydrogen then by fuel cell can create 5.25 kWh electricity/ kg. LiH, vs. 3.75 kWh per kg gasoline, while that LiH needs for its recycling 10.3 kWh renewable electricity , so system energy efficiency is 50% without any harmful exhaust. For the oil, analogous technology or by burning the both are followed by the oil recycling, they are 25% energy efficient with a lot of harmful exhaust.. Really For Lithium hydride, it was evaluated by me in the article : “Breakthrough kind of electric vehicle” in https://judbarovski.blogspot.com /2022/11 , posted at Nov. 05, 2022 For the oil, it is recycled from atmospheric CO2 and hydrogen produced by the water splitting.
Read more