A solid phase extraction (SPE) and GC-ECD for multi-residues determination of 14 organo-chlorinated pesticides (OCPs) in radix Pseudo-ginseng were introduced. Using n-hexane as extracting solvent and silica gel for clean up of sample extract, with GC-ECD analysis, good separation of 14 OCPs and carbophenothion(IS) was achieved on capillary column coated with poly(5% diphenyl) siloxane. Experiments showed that n-hexane is adequate as extracting solvent(percentage of recovery70% for 13 in total 14 analyses), the LOD was about 0.35 to 1.6 ppb for blank sample spiked with standards. The method has been carried out on 7 samples collected from market for preliminary investigation of its actual OCPs residues. For 14 OCPs being analysed, results showed that all samples to be examined are complied with requirements of MRL in USP 24 or in Eur. P97.We may conclude that those samples were cultivated in less contaminated soils or none of 14 OCPs was still in illegal use
Panax ; chemistry ; Drug Residues ; drugs

The rate of immunization was high and maintained continuously 11 years in the Northern Region. Evident, efficacy is the decreasing of incidence of EPI diseases, especially poliomyelitis, neonatal tetanus, and diphtheria. During continuous 8 years (from 1994 to 2001), there has been no wild poliovirus in the Northern Region, and the Region was certificated as polio-free in 2000. Neonatal tetanus has also been eliminated at the provincial level since 1995 and at district level since 1999. The other EPI diseases have been considerably reduced
Epidemiology ; immunization ; poliomyelitis ; Tetanus ; Diphtheria

It’s very important to identify pathological anatomic features in the treatment and prognosis of testicular cancer. In this study, 112 patients who were diagnosed by clinical and paraclinical symptoms were classified according to age, location, and severity. Their samples then were stained by PSA test. Results: 49% were germ cell tumors of scrotum, 9% were none germ cell tumors, and 42% were dystopic germ cell tumors. Base on pathological anatomic features (stage, location) we can apply different methods of treatment to gain better outcomes
Testicular Neoplasms ; Pathological Conditions, Anatomical ; Prognosis ; diagnosis

The survey last from Dec 9th to Dec 18 th 2002 with total number of 1558 HIV infected persons, including 344 AIDS manifestation; 160 AIDS deaths. is one among the provinces having highest number of HIV infection.The distribution of HIV infection is mainly in groups with high risk behaviors: infecting drug users 23.5%, prisoners 9.2%, STDs patients 8.4%, commercial sex workers 6.9%, male is four folds female;young age:20-29 makes up 55%. Total of 802 addicted person now in Kien giang, in which 54% are injecting drug users; 20-35% are shared needle and syringe; 20% shared drug bottle, 10% shared cleaning water for needle and syringe. Number of abused drug still increasing especially in Rach gia town. Prostitution activities is multiform and mobile both in the mainland and boat
HIV ; Acquired Immunodeficiency Syndrome ; Sexually Transmitted Diseases ; risk factors

The samples obtained from the 25 healthy adults donors, from19 to 50 years old of age, 18 men and 7 woman. Different antibodies match different methods. Standard method: CD3 (FITC) / CD16, CD56 (PE) / CD45 (PerCP) / CD19 (APC) mixture of antibodies. Estimate method: 3 colors use CD4 (FITC) / CD3 (PE) / CD8 (PerCP) mixture of antibodies and 4 colors use CD3 (FITC) / CD8 (PE) / CD45 (PerCD) / CD4 (APC) mixture of antibodies. Results: standard method - estimate method 3 colors: r = 0,85; % NK (adjust) = 1,99 x % NK (estimated) + 2,31; standard method - estimate method 4 colors: r = 0,85; % NK (adjust) = 1,63 x % NK (estimated) + 4,53
Tissue Donors ; methods ; Reference Standards

The research aimed to establish the maximum time elapsed between collection and analysis of samples. The blood samples were stored at temperature varying from 200C to 280C. Studied on 32 subjects, all samples were marked by the monoclonal antibodies. Each sample had been analyzed 4 times: within 6 hours, 24 hours, 48 hours and 72 hours after drawing. Epi-info 2000 had been used for statistical analysis the results. Results showed that: the maximum elapse of time for the CD4 was 72 hours, for the CD8 was 24 hours and for the lympho and the WBC's as little time as possible, because the results were very different every second time
Blood ; cells ; Temperature

Studying total number of 1,404 HIV infected persons, including 716 AIDS manifestation and 245 AIDS deaths in Dong Thap province from 3/2003 - 4/2003 showed that: the new infectious number of HIV in this province has been increasing quickly; Dong Thap ranks tenth in ten provinces having highest HIV/100,000 people rate (89.53%). Although, the HIV/AIDS epidemic in Dong Thap is still in concentrated period but the distribution of HIV infection with 3% children and 2.8% pregnant women is a worried problem. Moreover, quantity and risk behaviors of HIV/AIDS infection in commercial sex workers and injecting drug users are also worried problems. Basing on these results, Dong Thap should mobilize all potential resources to implement quickly the measures including unnamed test counseling and activities which prevent mother-baby HIV spread helping reduce damaging effect in high risk people
HIV,Acquired Immunodeficiency Syndrome, Sex, Substance-Related Disorders

38 blood samples were divided into 2 groups – normal sample (with 3 groups of cells seen obviously; lymphocyte, mon, gronulocyte on FSC, SSC windows) and abnormal sample group (without these 3 groups of cells).
Antibodies ; cells ; Blood

The objective of study was to establish reference ranged for the lymphocyte subset (TCD3, TCD4, TCD8, B, NK) in peripheral blood of adult donors. This reference is used like target values for patients examinated in HCM city’s Pasteur Institute and then the results were compared with those obtained in Iranian healthy adults. Healthy person’s blood was processed with EDTA anticoagulation then incubated with 2 groups of antibodies from blood donors contained in 2 diverse tubes CD3/CD8/CD45/CD4 and CD3/CD16,56/CD45/CD19. Then through FASC apparatus, the samples were analyzed, and TCD3, TCD4, TCD8, B, NK were determined in each sample diversely.
Tissue Donors ; Adult ; Lymphocyte Subsets

In 6 simples of Nga Truat. 2 simples of Dia Lien, 2 samples of Cu Coc collected in Nghia Trai village. There was no-orgam chlorine pollutants; but in 1 of 9 samples of camomille containing cypermethrine residue exceeded the normal standard
Insecticides ; Medicine, Traditional ; Pharmaceutical Preparations