Re: Help, help help!!!

["Vu Nguyen Thanh" <thanh@ulmus.riken.go.jp>]

Cha`o anh Cuong va` ca? nha`,

Chu+a tha^'y co' ai tra? lo+`i la.i tha^'y Cu. Ca ca^'t co^ng sang 
ta^.n VNSA ho?i ho^.  ne^n dda`nh nha('m ma('t mu'a ru+`u...va^.y. 

Theo to^i hie^?u thi` Global warming va` Ozone hole kho^ng lie^n quan 
la('m gi` dde^'n nhau.  Global warming nguye^n nha^n la` do Green 
House Effect due to the increesing  concentration of CO2 in the 
atmosphere. The latter can capture the IR (ho^`ng ngoa.i) in the way 
back from Earth to the Cosmos.  Chi'nh vi` va^.y tra'i dda^'t 
a^'m le^n. Ozone hole thi` do mo^.t so^' gaz co' kha? nang xu'c ta'c 
qua' tri`nh pha^n hu?y O3.  Ca'c gaz do' co' the^? la` CH4, NO, NO2, 
NH3 (?)....nhu+ng xem ra ma.nh nha^'t va^~n la` (que^n te^n  
tetracholorcarbon...???) thu+o+`ng du`ng trong tu? la.nh, bi`nh xi.t 
ne^n dda~ bi. ca^'m.   Ta.i sao chi? co' o+? Nam cu+.c thi` chi.u 
(ta.i o+? dda^'y nhie^`u tu? la.nh :-)).  Tha^'y co' la^`n ba'o chi' 
Nga ddu+a tin la` Ozone hole xua^'t hie^.n tre^n khi' quye^?n Moscow. 
 Hi`nh nhu+ chuye^.n Ozone hole to ra cu~ng chu+a cha('c cha('n 
la('m.  Ozone ba?o ve^. su+. so^'ng tre^n tra'i dda^t kho?i tia UV 
ga^y DNA damage.  Vi` va^.y ngu+o+`i ta lo ozone hole se~ da^~n to+'i 
su+. ta(ng ung thu+ da.
> 
> Nhan tien day cung xin hoi luon mot van de lien quan toi global warming 
> and ozone hole la tia cuc tim (UV): ban chat, loai, ca'ch tao UV trong 
> phong thi nghiem, cong dung. 

Ne^'u to^i hie^?u ddu'ng thi` anh Cuong hoi ve tia UV??
So'ng ddie^.n tu+`.  Buoc so'ng trong khoa?ng ???-2?? nhu+ng 
270nm thi` cha('c cha('n ro^`i.  Ca'ch ta.o:  vo^ kho^'i nhu+ng 
cha('c pho^? bie^'n nha^'t la` du`ng dde`n tha.ch anh (kie^?u dde`n
huy`nh quang nhu+ng ca.o be'ng ca'i lo+'p tra(ng tra('ng ddi
vo? thi` du`ng pure SiO2).  Hoa(.c du`ng la(ng ki'nh dde^? lo.c 
tu+` nguo^`n kha'c cu~ng ddu+o+.c.   Co^ng du.ng:  ga^y mutant,
die^.t tru`ng, ta'c nha^n trong nhie^`u pha?n u+'ng ho'a ho.c,  
cho ca'c co^ la`m da dden...ngoa`i ra co`n co' the^?
la`m 1 so^' chuye^.n vo+' va^?n kha'c nghe ddo^`n la` dde^? ghi
ROM va` in vi ma.ch nu+~a.

> xuan? Ozone hole co' anh huong gi toi khi hau VN khong???

Luc o VN co' ca^.u ba.n ba?o nghie^n cuu la` nhie^.t ddo^. o+?
Tha.ch Ba`n (la`ng go^'m no^?i tie^'ng) cao ho+n ca'c vu`ng la^n 
ca^.n khoa?ng 1oC.  Ca^.u a^'y ddo^? ta.i CO2 nhu+ng to^i thi`
nghi ma^'y ca'i lo` ga.ch.

Ta`i lie^.u chung chung cha('c ra^'t nhie^`u anh cu+' la^'y ba^'t 
cu+' quye^?n Ecology xua^'t ba?n sau 1994.  Co`n ta`i lie^.u ve^`
VN thi` to^i chi.u tho^i.  Qua? tha^.t to^i chu+a bao gio+` tin ma^'y 
ca'i chuye^.n na`y la('m.  Co' the^? co' cho^~ chu+a chi'nh xa'c
anh kie^?m tra la.i.  Mong ca'c ba'c kha'c xu'm va`o 1 tay.

Tha`nh