Please capitalize where necessary: it has been six fantastic weeks with a wonderful mix of people! i think that all of us will leave oden tomorrow a bit sad...
A: It has been six fantastic weeks with a wonderful mix of people! I think that all of us will leave Oden tomorrow a bit sad...

Please capitalize where necessary: the lenticells are medium sized.
A: The lenticells are medium sized.

Please capitalize where necessary: morning temperatures will be around 12 c. during the day they will reach a maximum of 15 c. low temperatures at night will be around 8c. we have weak westerly winds.
A: Morning temperatures will be around 12 C. During the day they will reach a maximum of 15 C. Low temperatures at night will be around 8C. We have weak westerly winds.

Please capitalize where necessary: in particular he began research on engineering problems and problems relating to fortifications.
A:
In particular he began research on engineering problems and problems relating to fortifications.