RE: Simpson Mending Plate for custom made wood truss. I think boo1 pretty welled summed it up. Based on experience my opinion would be that the liability you would be taking on if you try to show that the mend plates work, would be too high.
Isoniazid is often used as a protective treatment to reduce the risk of TB. D100 might be a medicine called doxycycline, which is a drug used to treatment many different things. Please ask your doctor or pharmacist to talk about this. These people will help you understand your medicine and what it is being used for.
Treatment with isoniazid alone for 6 to 12 months will prevent active TB disease in most people who have a latent TB infection. 1 Also, taking a combination of two antibiotics for 3 months is an effective way to treat latent TB. 3 For this treatment, a health professional watches you take each dose of antibiotics, which helps prevent the TB bacteria from getting resistant to the antibiotics.