TRUNG TAM KHOA HQC Tl!NHIEN vA CONG NGH$ ouoc GJATap chi Hoa hoc, T. 39, so 4 - 2001

MVC LVCCONTENTS

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M9t so yeu to anh huong den hoat tfnh xiic tac phtrc Cu(II)/chitin, Cu(II)/chitosantrong phan irng oxi hoa Na2S bang oxi phan nr.Some factors influenced on the catalytical activity of Cu(II)/chitin and Cu(II)/chitosan complexes in oxidation of Na2S by molecular oxygen.

Trinh D/(c Hung, Ng6 Thi TIll/~'jIl, CIUIII VUII Millh,Ngllyen Pllli TlIII, LI(II Manh Ifl/ng

2 Nghien ciru su dung phan vi hrong tir chitin lam tang nang suat lua. 6Study on the application of the microamount Fertilizer from chitin for rice-productivity.

Ngllyen Thi Hu«, Ldm Ngoc Thu, Ngllyen Vdn Houn

3 Nghien ctru tfnh chat cua lap phu teflon trong axit nitoric d~c bang phuong phap do 10tong tro.

Study on the properties of tenon coating in concentrated nitric acid using impedancetechnique.

Ph(ll7l /luy Qu.\'nh, Hoang Anh Tlldll, Dinh Mai Thanh, Le XIUIII Que'

4 Thuy phan pectin bang enzim V~I tri~n vong ung dung. 14The enzyme catalyzed pectin hydrolysis and its application.

PII~IIII Hii'u Die/I, PI/{{l/ Veill KifJ7/, Chdu V(III Minh'

5 Ket qua nghien ciru cong nghe S;'\I1 xuat zirconit iU sa khoang ven bi~l; Vi¢t Narn. 20Result on investigation of zirconit technology from Vietnam beach sand.

Coo Dinh Tlwllh, TI/{ii B(i Celli, BI/i VUII HIOlg, Ph~1II1 V(/II Diing

6 Xu Iy nuoc sinh hoat nr nuoc mat cha] lirong thap bang mang vi 19Cdang soi rong. 23Domestic water treatment from low quality surface water by hollow fiber microfil-trat ion mern brane.

Phon Do Hung, Nguye-II The'Dong, Nguyen Minh Tunn.To Hcii Yell, Hisaya Takashima

7 Nghien ciiu phan irng ankyl hoa toluen bang metanol tren xuc tac MCM-22. 28Alkylation of toluene with methanol over MCM-22 zeolite catalyst.

Ng6 tt.. TlIII\III. Tn/II Thi Nlll( Mai, Nguyell Minh Ng(Jc

8 Tac dong cua oxi hoa den cau true dien nr cua PANi. 32Effects of oxidation on the PANi electronic structure.

Vii HI/lIg Sinh, U XI/(III Que: Do Tra 1-/i(O'lIg./J(7l1g Vilg V\III

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9 Tinh che' uran ky thuat Viet Nam dat d¢ tinh khiet hat nhan bing phuong phap chiet 37voi dung moi TBP.Refining Vietnamese technical uranium to get nuclear purity uranium by liquid-liquid extraction method with TBP as an extractant.

U Ba Thugn, NguyEn Trong Hung, Trdn NgQc HcI

10 Nghien cuu sir chuyen pha trong qua trinh tong hop zeolit A. 43Study on the phase transition in the synthesis zeolite A.

U Thi HOcli Nam, HOclng Vinh Thdng

II Anh hirong cua khuech tan den dong hoc phan irng oxi hoa phenol trong pha long 49bing hidropeoxit tren xiic tac titan silicat (TS-l).The influence of pore diffusion limitation on kinetics of the hydroxyl at ion reactionof phenol with hydrogen peroxide over titanium silicate-I (TS-l).

Nguyfn Dinh Tuyen, U Thi Holli Nam, Bui Tiel? Diing, Nguyfn Hifu Phu

12 Tim cac dieu kien t6i tru cho phan ling phan huy phenol bing tac nhan fenton 57Fe"+/H202'The determination of optimum conditions for degradation of phenol by fentonreagent Fe2+/H202'Nguysn Thi Dung, NguyEn Truong Duy, Nguyen Van Khoa, Nguyen Thi Thanh Cdm

13 Khir oxit nito trong khf thai lam giam 6 nhiern khong khi. 63Reduction of nitrogen oxides in exhaust gas to reduce air pollution.

Trdn Van Nhdn, Khuc Quang o«. U Thanh Son

14 T6ng hop va img dung chat dong rim dang adduct trong che tao mang son tir nhira 68epoxy.Preparation and application the adducts for making paint film from epoxy resin.

Ta Phuong Hoa, Trinh Xuan Anh

15 Tfnh tnrong cua hidrogel tren co so polyuretan nhiet rin trong dung dich mu6i a cac 72nhiet d¢ khac nhau.Temperature-depending swelling behavior of crosslinked polyurethane-basedhydrogels in salt solutions.

Phung HiJ, E. Schacht

16 Nghien CUu epime hoa 17a-etynylestradiol. 78

Study on the epimerization of the l7a-ethynylestradiol.Luu DIIC Huy, Nguyen Thi Huang

17 Anh huang cua ban chat dung moi toi dong xiic tac cue phd trong he Co2+-N02'- 81nitrosodiphenylamin. .Influence of solvents on polarographic catalytic current in Co2+-N02'-NODPAsystem.

Nguyen Tong Hoang Oanh, Dr) Ng9c Khue, va Duy Thinh

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18 Nghien cuu qua trlnh phan huy nhiet cua nitroxenlulo dieu che tir nguyen lieu trongnuoc.Study on the thermal decomposition of nitrocellulose prepared from internal materialof cellulose.

Ngo Van Giao, D6 Ngoc Khue19 Nghien ciru cac ancaloit tir la cay Nang la rong (Crinum latifolium L.

Amaryllidaceae) cua Viet Nam.

Study on alkaloids from the leaves of Crium latifolium L. (Amaryllidaceae) ofVietnam.

Phan Tong San, Trdn Bacli Duong, Phan Minh Giang,Nguyen ti: Minh, Walter C. Taylor

20 Nghien ctru chuyen hoa cao lanh thanh zeolit NaY irng dung lam xiic tac trong motso phan trng hoa h9C.

1- Tong hop zeolit NaY co ty so SiOJAl203 = 4,5 tir cao lanh.

Study on transformation kaolin to NaY zeolite and its catalytic in chemical reactions.

I - Synthesis NaY zeolite with SiOJAl203 = 4.5 from kaolin.

Ta Ngoc Don, va Dao Thdng, Hoang Trong Yem

Nghien ciru moi quan he h6 bien cua san pham cong hop dang Base Schif cuaGossypol voi L-phenylalanin metyl este.

The imine-enamine tautomerisation of Schiff Base adduct of gossypol:(±)- Gossypol-L-phenylalanine methyl ester.

Nguyen Kim Phi Phung, Nguyen Ngoc Suong, Pham Dinh Hung, R. 1. Michelot

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22 Nghien ciru mao quan cot voi pha tinh cua tinh th~ long.

Preparation of capillary columns with liquid crystalline stationary phases.

Dao Thanh Hung23 Nghien ciru cau tnic va phd IH-NMR cua mot vai hop chat Pt(II) co chira vong

quinonin.

IH-NMR spectra and structure of some Pt(II)-complexes containing quinoline.

Nguyen Hiiu DTnh, Trdn Thi o«. Duong Bd va24 Dieu che va bien tinh b~ mat silicagen d~ tang ctrong kha nang hap phu ion uranyl tir

dung dich.

Preparation and modification of silica gel surface to enhance to absorb uranyl ionfrom solution.

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Trdn Hong Ha, D6 Quy San, Ngo Van Tuyen

24 Khao sat cau true phirc Pt(II)-salicylandehit thiosemicacbazon va hoat tfnh sinh h9C 118cua no.

Structural investigation of Pt(II) complex of salicylaldehyde thiosemicarbazone andits biological activity.

Duong Tudn Quang, Chu Dinh Kinh, va Dang D£?,Bui Thu Hoai