VI~N KHOA HQC VA CONG NGH~ VI~T NAMTap chi H6a hoc, T. 42, s6 2 - 2004

MVC LVCCONTENTS

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1 Ung dung ly thuyet do thi de lap cac phirong trlnh dong hoc cua phan irng enzym: 133Phan irng thuy phan xiic tac papain.Using the graphic theory for determining kinetic: Parameters of enzymatic reactioncatalyzed by papain.

Trdn Dinh TOfLi,Trdn Trung Hieu

2 Anh huang cua sir chieu xa vi song tren thanh phan hoa hoc cua tinh dau la Trau 139(Piper belle L.).Effect of microwave irradiation on the composition of essential oil of Piper belle L..

Bui Ngoc Minh Phuong, Nguyen Thuang Lenh, U Ngoc Thach,Trdn Hiiu Anh, LUll Thanh Thuy

3 Mo ta qua trlnh ep loc bit sari bang mo hlnh vat ly. 145Describing the press- filtration of the cassava residue by the physical model.

Nguyen Minh Tuyin, Lam Trdn va, D(zu The' Nhu

4 Dac tnrng compozit ZSM-5/MCM-41 bang phuong phap hong ngoai, rang hen va hap 148phu nito.Characterization of ZSM-5/MCM-41 composite by IR, XRD and nitrogen adsorption.

Le Thi Hoai Nam

5 Anh huang dien tich tren tam hoat dong den hoat tinh xiic tac kim loai - polyme trong 155phan irng oxi hoa Na2S bang oxi phan tir.Effect of the electric charges of active sites on the catalytic. activity of metal - polymercomplexes on oxidation of Na2S with molecular oxygens.

Trinh Due Hung, Doan vi« Nga, eMu Van Minh, Ngo Thi Thu(zn

6 Thanh phan hoa hoc cua mot so loai rong do (Rhodophyta) kinh te a ven bien Nam 159Viet Nam.The chemical composition of some commercial species of Red algae (rhodophyta) alongthe coast of the Southern of Vietnam.

uDinh Hung, Huynh Quang Ndng, Bui Minh Ly,N go Quae BUll, Trdn Thi Thanh Van

7 SI,Tkhuech tan ion clo trong be tong - Vai tro chat phu gia va xac dinh nhanh he so 163khuech tan ion clo.Chloride diffusivity in reinforced concrete - The role of additive substance and rapiddetermination method for chloride diffusivity.

Phan Van TUOng, Trdn DUO'ng,Trdn Thuy Nga

8 Hien nrong an mon vat lieu LaNi5 lam dien cue Am cho acqui Ni-MH duoi tac dongcua qua trlnh phong - nap.Effect of charge - discharge process on corrosion of LaNi5 material grains.

BiIi tu» Trinh, D6 r-a Huang, u Xudn Que'

9 Tong hop nghien CUuphirc chat cua prazeodym voi L. Tryptophan.Synthesis and study on the complex of praseodymium with L. Tryptophan.

Nguyen. Trong Uye'n, U Hiiu Thieng, Nguyen To Giang

10 Nghien ciru thanh phan hoa hoc cay M~t trau (Micromelum hirsutum Oliv.)Study on chemical constituents of Micromelum hirsutum.

Trinh Thi Thuy, Tra'n Van Sung, Guenter Adam

11 Nghien ciru che tao va irng dung vat lieu khoang set anion ZnAIO va MgAIO.Preparation and application of the hydrota1cite materials based on ZnAIO and MgAIO.

Nguyen ru Dung, Luu Thanh Tong

12 Phan lap va nhan dang mot so flavonoit tir cay Kh6 sam cho la (Croton tonkinensisGagnep.) co a Viet Nam.Isolation and identification some flavonoids from the aerial part of Croton tonkinensisGagnep., growing in Vietnam.

Pham Thi Hong Minh, Pham Hoang Ngoc, Chu Dink Kinh

13 Nghien ciiu anh huang cua chat tro nrong hop (PPMA) den tinh chat cua hon hoppolyamit-polypropylen (PA/PP).Phan II - Anh huang cua chat tro nrong hop den tfnh chat va do hap thu rnroc cua hon hop.Study on the effect of PPMA - a compatibilizer on properties of polyamide - polypropyleneblend (PA/PP).Part II - Influence of compatabilizer on thermal properties and water absorption ofblend PA/PP.

Bui Chuang, Nguyln Van Huynh

14 Nghien ciru phan img xay ra trong h¢ MgO - CoO - cao lanh a 1250°C.Study on the reactions of the system MgO - CoO - kaolinite at 1250°C.

Phan Van TUO'ng,Le Dinh Quy Son, Nguyen Ngoc Thinh

15 Ket qua nghien ciru ve thanh phan hoa hoc va hoat tinh sinh hoc cay la ngon(Gelsemium elegans) cua Viet Nam.Phan II - Phan lap, xac dinh du true va hoat tinh sinh hoc cua cac indol ancaloitResults in the study of chemical composition and biological activity of VietnameseGelsemium elegans.Part II - Isolation, structural elucidation and biological activity of indol alkaloids.

Lt;IiKim Dung, Trinh Thi Thuy, Tra'n Van Sung, Pham Gia ou«16 Cac hop chat aporphin ancaloit tir cay Khao chun (ho Long nao) va hoat tfnh doc te

bao cua cluing.Aporphine alkaloides from Phoebe chinensis (Lauraceae) growing in Vietnam.

Nguyen Van Hung, Nguyen Van Tuyen

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17 Anh huang cua Cr203 den hoat d('>oxi h6a khir cua c~p FeOJFe 210Effect of Cr203 on the activity of redox reaction of FeOJFe.

Van Dinh San ti». ie Xudn Khuong,Hoang Trqng Yem, Van Dinh D¢

~8 Nghien ciru cau dang phan tu cua [3-D-2-amino-2-deoxiglucopyranoza bang phtrong 215phap ab initio.

Study on the molecular conformations of [3-D-2-amino-2-deoxyglucopyranose usingab initio method.

Nguyen Dinh Thanh, Dang NhllTt;li

19 Dac trung dong hoc cua prolyl endopeptidazo tir Anabaena sp. PCC 7120. 221The kinetic characteristics of the prolyl endopeptidase from Anabaena sp. PCC 7120

Wolfgang Lockau, Kirstin Baier, Trdn Dinh Toai

20 G6p phan tim hieu thanh phan h6a hoc cua cay ho Xoan (Meliaceae). 227Contribution to the study on the chemical constituents of Azadirachta indica A.Juss., family of Meliaceae.

NguyEn Kim Phi Phung, Nguyen Thj Anh Tuyet, t-s« Thj re«21 G6p phan nghien ctru hlnh th~ phan nr cua cac azometin c6 chira hai nhan indol: day 5- 231

amino-l,2-dimetylindol.Contribution to the study on the molecular shape of some azomethines containing twoindolle rings: case of 5-amino-l ,2-dimethylindole series.

Dang Nhu Tai, Nguyen Dinh Thanh, Pham Thi Quy

22 Compozit polyanilin cau tnic lap xen ke c6 clnra niken-nanoc1uster. 236PMn I - Khai niem va cau true hinh thai.Nickel-nanoclusters-containing polyaniline composites having structure layer-by-layer.Part I - The development of concept and structural morphology.

Trdn Trung, Trdn Hiiu Trung

23 T6ng hop "hoa hoc mem" hop kim bot sieu min ABs cho nguon dien Ni-MH. 241"Soft Chemistry" synthesis of superfine powder alloys ABs for Ni-MH batteries.

N go Quae Quyen, Nguyen Quynh. Anh, Phan Thi Sinh

24 Bergenin duoc phan l~p tir vo than cua Ficus glomerata. 250Bergenin isolated from Ficus glome rata bark.

NguyEn ThlDung, Pham Dinh Ty, W. C. Taylor,Vu Dinh Hoang

25 Nghien CUu cay Sam nam (Dracaena angustifolia). 253II - Nhirng saponin moi tir r~ va than r~.Study of Dracaena angustifolia.II - New steroidal saponins from roots and rhizomes.

Trdn Le Qudn, Trdn Kim Qui, Shigetoshi Kadota

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26 Nang cao hoat tinh quang xiic tac cua rnang mong Ti02 bang phuong phap sol-gel co 257cau tnic nano x6p.Enhanced photocatalytic activity of porous nanostructured Ti02 thin film prepared bySol-Gel process.

r-s« Thi tu«. Tra'n Xudn Hoai, Nguyen Thi ttu«Nguyln Luong Lam, Nguyen Trong Tinh

27 Cac ket qua tiep theo v~ thanh phan hoa hoc cay Mach mon. 261Further constituents from Ophiopogon japonicus.

Nguyen Thi Hoang Anh, Trdn ViinSung, Ludger Wessjohann

Ghi chu: Bat dau tir nam 2004, cac bai dang duoc danh so trang theo toan tap, nhu vay cac baidang trong moi tap (1 nam) diroc danh s6 trang ke tiep nhau tir trang 1 den trang 528.

In tai Xirong in II, Nha in Khoa hoc va Cong nghe, 18 Hoang Qu6c Viet, Cau Gilly, Ha Noi,Chi so:· 12873 - ISSN 0866-7144. In xong va nop hru chieu thang 6 nam 2004.

Gia: 15.000 d