N° 16. — Diffusion thermique dans les mélanges gazeux

La séparation thermique est obtenue par les mélanges gazeux H2 — N2O et N2 —SO2 pour l’intervalle de température 300-480 °K. Les valeurs du rapport de diffusion thermique (KT) et du rapport de séparation thermique (RT) sont données pour chaque mélange de gaz. On a remarqué que ces valeurs diminuent graduellement lorsque la température diminue. L’effet est mesuré au moyen du katharomètre et les résultats sont comparés aux prévisions théoriques

Distribution of Blood Groups(ABO) between Symptomatic & Asymptomatic Human Leishmania Infantum Infection in Human

Abstract Background & aim: According to the hypothesis that leishmania parasites can be escaped from immune system covered by blood group antigens (ABO) to prevent its recognition by the immune system. The aim of this study was to show the associated blood groups with symptomatic or asymptomatic visceral leishmaniasis due to Leishmania infantum in human. Methods: In this cross-sectional study the population was divided into two groups. The first group included 54 patients with kala-azar (antibody against Leishmania titers ≥1:3200 by TDA with clinical specificity) and the second group consisted of 45 subjects infected with Leishmania infantum (Leishmania antibody titers of1: 800 and 1:1600 by DAT method and non-specific symptoms). The distribution of the 4 main blood groups ABO type, sex, age, presence or absence of symptoms, clinical signs, and response to Glucantim therapy and DAT results were evaluated. Data were analyzed by chi-square test. Results: Most of the patients in group 1 were blood group A (37%) and the lowest number of blood group were B (12.8%). In the second group, most of the ABO blood group A (42.2%) and lowest in the ABO blood group AB (8.9%).There was no significant association between blood groups and clinical symptoms (p>0.05). Conclusion: This study showed that there is no association between blood group and incidence of symptomatic and asymptomatic kala-azar. Key words: Leishmania Infantum, Kala-azar, Blood Group, Huma

Cutaneous leishmaniasis in Gonbad Kavoos, North of Iran (2009-11): an epidemiological study

Background and Objective: Cutaneous leishmaniasis is one of the zoonosis disease which is transmitted by sand fly and has been considered as one of the most important health problems in Iran. This study was designed to assess the status of cutaneous leishmaniasis in Gonbad Kavoos, North of Iran. Materials and Methods: This descriptive-analytical retrospective study was performed on the two groups consist of: 1799 patients (995 men and 804 women) referred to health centers of Gonbad Kavoos in Golestan Province North of Iran during 2009-11. Also 278 men and 271 women were selected randomly in one of the villages for the assessment of acute and scar wounds. Patient’s characteristics such as age, sex, habitat, number and sites of ulcer(s), month and years of incidence were registered. Data were analyzed using SPSS-13 and Chi-Square test. Results: From 1799 under care patients, 995 cases (55.3%) were males and 804 cases (44.7%) were females (P<0.05). 1542 patients (85.7%) resided in rural areas, while 257 (14.3%) lived in urban areas (P<0.05). The most frequent age group was 0-9 years old (43.3%) (P<0.05). Hands were the most common sites of ulcer (42.3%) and 37.9% of the patients with one ulser. The highest prevalency of disease was observed in months of October and November (68.4%) 4% and 78.6% of subjects selected from villages were presented with acute wound and scar, respectivley. Conclusion: This study showed that Cutaneous leishmaniasis in 2010-11 was dispersed in Gonbad-Kavoos a city in North of Iran. The endemicity situation of this disease in this area is hypoendemic