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60.324  Articles
1 of 6.033 pages  |  10  records  |  more records»
????: ??????? ????? ???????? ??????????? ? ???? ???????? ???? ?? ?????????? ??????????????? ?????????? ????.????????? ? ??????. ????????? ??????????? 200 ???? ??????? ?? ????????? ?????? ????? ??? 18 ?? 22 ????? (?? 100 ???? ? ?????? ?????) ??? ?????... see more

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Các nguyên t? d?t hi?m (REEs) du?c ch?ng minh giúp gia tang s? sinh tru?ng, phát tri?n cung nhu nang su?t và ch?t lu?ng cây tr?ng. REEs thu?ng du?c b? sung trong phân bón du?i d?ng vi lu?ng và có t?ng hàm lu?ng khá cao trong v? Trái Ð?t. Tuy nhiên, do có ... see more

? ?????? ????????? ?????????? ???????? ??????????? ??????????? ???????????????? ????????? ? ?????????????? ?????. ?? ???????????????? ? ??????????? ???????????? ?????, ?????????? ??????????? ???????? ??????????? ??? ??????? ?????????? ????????????. ??????... see more

????????? ? ????????? ??????? ?????? – ???? ? ???????? ????????? ??????????? ??????, ??? ? ??? ??. ??????????? ????????? ??????-??????????? ??????????.???? ??????????? – ?????????? ??????? ?????????? ???????????? ? ?????? ?????? ???????? ?????????? ??????... see more

????????? ? ????????? ??????? ?????? – ???? ? ???????? ????????? ??????????? ??????, ??? ? ??? ??. ??????????? ????????? ??????-??????????? ??????????.???? ??????????? – ?????????? ??????? ?????????? ???????????? ? ?????? ?????? ???????? ?????????? ??????... see more

Các d?t gãy Tân ki?n t?o – hi?n d?i t?i khu v?c d?ng b?ng ven bi?n t?nh Qu?ng Nam gây s?t lún khá m?nh ? c?a sông Thu B?n. Qua vi?c dánh giá s? phân b? tr?m tích trong vùng tác d?ng c?a các d?t gãy, chúng tôi dã dánh giá phuong th?c d?ch chuy?n c?a d?t gã... see more

Let G be a graph and some pebbles are distributed on its vertices. A pebbling move (step) consists of removing two pebbles from one vertex, throwing one pebble away, and moving the other pebble to an adjacent vertex. The t-pebbling number of a graph G is ... see more

Tóm t?tCùng v?i s? phát tri?n m?nh m? c?a th? lo?i ti?u thuy?t ? dô th? mi?n Nam giai do?n t? 1954 – 1975, ti?u thuy?t có tính ch?t t? truy?n cung dã d?t du?c nh?ng thành t?u dáng k? trên nhi?u phuong di?n. Tuy nhiên, v?n d? nghiên c?u v? ti?u thuy?t có t... see more

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