If by boron you mean abortion or birth it should be as soon as you´ve healed. When you have an aboirtion or birth you make a new appointment 2 weeks after to see the doctor and how you´ve healed and then you can discuss birthcontrol. The first month is for healing and no sex allowed anyway. Also remember that after birth or abortion you are very fertile so use protection always.
Boron is used to make control rods.
The control rods inside a nuclear reactor are made out of Boron.
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Boron is used in flares, propellant mixtures, nuclear reactor control elements, abrasives, and hard metallic alloys
control rods
Usually boron is alloyed with steel, boron is a very good neutron absorber.
Boric acid commonly used for pest control can be used in small amounts to add boron to soil.
Boron rods are introduced into the reaction to slow it down when required.
A boron steel alloy is the most common material used, boron is the neutron absorber.
Boron is used inside a nuclear reactor inside a control rod which is used to 'soak' up the neutrons inside the nuclear reactor, a control rod can be used to control the rate of fission inside a nuclear reactor.
boron or cadmium control rods.
Boron is a very good absorber of neutrons, and it is used in control rods and as a soluble material sometimes, to adjust the reactivity state of the reactor.