http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Maria J. Trindade (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Flávia Thamiris Figueiredo Pacheco,Silvia Souza de Carvalho,Samara Alves Santos,Gisele Maria Trindade das Chagas,Mariana Conceição Santos,Jéssica Gleide Souza Santos,Hugo da Costa-Ribeiro Júnior,Terez 대한진단검사의학회 2020 Annals of Laboratory Medicine Vol.40 No.5
Background: Giardia duodenalis is conventionally diagnosed in fecal samples using parasitological methods. However, sensitivity is poor when only a single sample is analyzed, due to intermittent excretion of cysts in feces. Alternatively, the serum antibodies to G. duodenalis can be used for parasite diagnosis and epidemiological studies to determine previous exposure. We compared the rate of G. duodenalis infection between serum anti-Giardia IgG and IgA antibodies and fecal examination in Brazilian children. Methods: Fecal and serum samples were tested from 287 children at a clinical laboratory and from 187 children at daycare centers. Fecal samples were processed using conventional parasitological methods and coproantigen detection for Giardia diagnosis. Serum samples were tested using an in-house ELISA for detection of anti-Giardia IgG and IgA. Results: G. duodenalis was found in 8.2% (N=39) of the 474 children analyzed. The sensitivity and specificity of ELISA were 80.0% and 90.0% for IgG and 80.0% and 83.3% for IgA, respectively. The total positivity rate of anti-Giardia IgG and IgA in the sera was 13.9% (N=66) and 23.6% (N=112). The agreement between the positivity of specific antibodies and the detection of G. duodenalis in feces was moderate for ELISA-IgG, kappa index (95% CI)=0.543 (0.422–0.664), and mild for ELISA-IgA, kappa index (95% CI)=0.283 (0.162–0.404). Among the children infected with other enteroparasites, 11.6% (N=10) and 24.4% (N=21) showed reactivity to anti-Giardia IgG and to IgA, respectively. This cross-reactivity was more frequent in samples from children infected with Endolimax nana and Entamoeba coli. Conclusions: The higher frequency of specific antibody reactivity compared with G. duodenalis diagnosis in feces could reflect continuous exposure of children to G. duodenalis infection, resulting in long-lasting immunological memory and/or cross-reactivity with other intestinal amoebas.
-
Geochemistry of mudrock units from the Meso-Cenozoic Algarve Basin, Portugal
Maria J. Trindade,Maria I. Dias,Fernando Rocha,Maria I. Prudêncio,Rosa Marques 한국지질과학협의회 2018 Geosciences Journal Vol.22 No.5
Geochemistry of mudrock units deposited in the sedimentary basin of Algarve (South Portugal) during Mesozoic and Cenozoic depositional cycles were studied, aiming a better knowledge of the evolution of the Basin. Two types of mudrock units were found: (i) silicic and Ca-poor (Cretaceous and Cenozoic), and (ii) calcareous (Middle–Upper Jurassic Ca-rich mudrock units and Upper Triassic to Lower Jurassic Mg-rich redbeds). LILE appear to be controlled by a K-bearing phyllosilicate, which is consistent with the abundant illite in the redbeds. Positive trends of: (i) Sc, Cr, Th, LREE with Al2O3 suggests their incorporation in clay minerals, and (ii) HREE with TiO2, Zr and Hf point to their presence in heavy minerals. The source area of the Algarve mudrock units was dominated by felsic rocks; features typical of a mafic source occur in some Upper Triassic to Lower Jurassic samples. Carboniferous metasediments of the basement were probably the first order source for the Algarve sedimentary basin. A more severe weathering in the Cenozoic and Cretaceous mudrock units occurred, whereas diagenetic enrichment in potassium is observed in the Upper Triassic to Lower Jurassic continental redbeds.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
