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baltic_kurs » Материалы за Декабрь 2012 года
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Vitamin C 'gives chemotherapy a boost'

Автор: mwzfvfxjy от 25-12-2012, 03:50
Vitamin C 'gives chemotherapy a boost'

High-dose vitamin C can boost the cancer-killing effect of chemotherapy in the lab and mice, research suggests. Given by injection, it could potentially be a safe, effective and low-cost treatment for ovarian and other cancers, say US scientists. Reporting in, they call for large-scale government clinical trials. Pharmaceutical companies are unlikely to run trials, as vitamins cannot be patented.

Vitamin C has long been used as an alternative therapy for cancer. In the 1970s, chemist Linus Pauling reported that vitamin C given intravenously was effective in treating cancer. However, clinical trials of vitamin C given by mouth failed to replicate the effect, and research was abandoned.

It is now known that the human body quickly excretes vitamin C when it is taken by mouth. However, scientists at say that when given by injection vitamin C is absorbed into the body, and can kill cancer cells without harming...

Chapter17.Interfacing with C: the FFI

Автор: Apolutualay от 14-12-2012, 10:47
Chapter17.Interfacing with C: the FFI

We've decided what Haskell type to represent the C function with, what the result data will be represented by, and how its memory will be managed. We've chosen a representation for flags to the function, and worked out how to get C strings to and from code inspecting it. So let's write the complete function for compiling PCRE regular expressions from Haskell: -- file: ch17/PCRE-compile. Hs compile :: ByteString - [PCREOption] - Either String Regex compile str flags = unsafePerformIO $ useAsCString str $ pattern - do alloca $ errptr - do alloca $ erroffset - do pcre_ptr - c_pcre_compile pattern (combineOptions flags) errptr erroffset nullPtr if pcre_ptr == nullPtr then do err - peekCString = peek errptr return (Left err) else do reg - newForeignPtr finalizer...

Business FM 107,4 (

Автор: PoonoNobdom от 13-12-2012, 07:00
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