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The world should be boundary-less, including the boundaries between countries.
The world should be united as a whole. Not through military powers, but through the common goal of all human beings: to live happily, healthily, and confidently.
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A reply on Conversation: Join now: What is really needed to have a world without malaria? Live Conversation with Bart Knols
A comment on Conversation: Join now: What is really needed to have a world without malaria? Live Conversation with Bart Knols
In respect of the mosquito net, I am just wondering if it's possible for the researcher to find some way to make the net from materials which could be found in the place in need. If people living there could be taught to make nets from surrounding materials with their own hands (although these net might not be as good as products made through industrial process,) we might help them not only to prevent malaria but also help them to improve financial conditions.
A reply on Talk: Erica Frenkel: The universal anesthesia machine
A comment on Talk: Erica Frenkel: The universal anesthesia machine
Why don't they add a backup battery for the oxygen generator?
If I were the designer, while keeping the battery of oxygen sensor in place, I would give UAM two backup battery slots and use the ordinary car battery as the backup battery. You can put one or two backup batteries in the slots. If two backup batteries are used, the battery with more power will be used up first.
This is how it would work:
When there is electricity in the power grid:
Power use: The power grid powers the UAM and charges the backup batteries.
Oxygen sensor display: NORMAL
When there is no electricity in the power grid and one of the backup battery (say, the battery in slot A) has electricity:
Power use: The backup battery in slot A powers the UAM.
Oxygen sensor display: BATTERY A - XX MINUTES LEFT
When the backup battery in slot A has no power and the other backup battery (the battery in slot B) still has electricity:
Power use: The backup battery in slot B powers the UAM.
Oxygen sensor display: BATTERY B - XX MINUTES LEFT, REPLACE BATTERY A
When there is no electricity in the power grid and both backup batteries have no electricity, either:
Power use: No power. Manually drawing the air.
Oxygen sensor display: NO POWER - Replace Battery
The merits of using car battery is that once a backup battery in the UAM is fully discharged, the hospital could take a battery from any car (e.g. an ambulance) for replacement. By putting the discharged batteries in a car in use, like the ambulance, you can charge the battery while using the car. Furthermore, even if we don't have a car, a battery could be charged in many ways, solar power, wind power, or even the family members of the patient riding bicycle like generators. By giving two battery slots, we can change the battery without interruption.
Anyway, while appreciating the contribution of Dr. Paul, I do believe the machine could be improved by adding backup batteries.