Abstract:
:Four new N-alkyl-2-mercapto-1-octylamine hydrochlorides were synthesized via the reaction of 1,2-epithio-octane with corresponding amines following by conversion to the hydrochlorides. The disulfides were obtained by oxidation of the respective thiols. Upon biological assay of the products for activity against infection by Schistosoma mansoni, only 2,2'-dithiobis(N-isobutyl-1-octylamine) exhibited activity.
journal_name
An Acad Bras Ciencjournal_title
Anais da Academia Brasileira de Cienciasauthors
Vieira Filho SA,Nelson DL,Piló-Veloso Dsubject
Has Abstractpub_date
1986-12-01 00:00:00pages
547-51issue
4eissn
0001-3765issn
1678-2690journal_volume
58pub_type
杂志文章abstract::In the province of Misiones (Argentina), the filling of the Yacyretá Reservoir (Argentina-Paraguay) to its final dimensions in 2011 formed new aquatic ecosystem, e.g., Garupá Stream was converted into a subreservoir. Reports have been made in this stream of adult individuals and spawning of the Family Sciaenidae, exce...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765202020180783
更新日期:2020-01-01 00:00:00
abstract::Tissue engineering holds as a prominent technique to repair or replace the damaged human parts to recreate its native function. In this research, a novel scaffold based on polyurethane (PU) comprising megni oil was electrospun for tissue engineering applications. The obtained polyurethane blended with megni oil nanofi...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201920190018
更新日期:2019-06-19 00:00:00
abstract::Coffee is one of the most important Brazilian agricultural commodities exported, and Minas Gerais and Espírito Santo States are the main coffee producers. Scale insects are important coffee pests, and 73 species of Cerococcidae (3), Coccidae (18), Diaspididae (6), Eriococcidae (1), Ortheziidae (3), Pseudococcidae (21)...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201720160689
更新日期:2017-10-01 00:00:00
abstract::Acute intermittent porphyria is the most common acute porphyria caused by a decrease in hepatic porphobilinogen deaminase activity, resulting in an accumulation of delta-aminolevulinic acid and porphobilinogen. This disease shows nonspecific signs and symptoms that can be confused with other diseases, thereby making t...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/S0001-37652013000300019
更新日期:2013-09-01 00:00:00
abstract::The risk of developing cardiovascular disease (CVD) is related to lifestyle (e.g. diet, physical activity and smoking) as well as to genetic factors. This study aimed at evaluating the association between CVD risk factors and DNA damage levels in children and adolescents. Anthropometry, diet and serum CVD risk factors...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652012005000039
更新日期:2012-09-01 00:00:00
abstract::Upwelling systems contain a high diversity of pelagic microorganisms and their composition and activity are defined by factors like temperature and nutrient concentration. Denaturing gradient gel electrophoresis (DGGE) technique was used to verify the spatial and temporal genetic variability of Bacteria and Archaea in...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201520140098
更新日期:2015-09-01 00:00:00
abstract::The objective of this study was to investigate the effects of 2% L-glutamine supplementation on myenteric innervation in the ileum of diabetic rats, grouped as follows: normoglycemic (N); normoglycemic supplemented with L-glutamine (NG); diabetic (D); and diabetic supplemented with L-glutamine (DG). The ileums were su...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201620150228
更新日期:2016-01-01 00:00:00
abstract::The isolated chick retina provides an in vitro tissue model, in which two protocols were developed to verify the efficacy of a peptide in the excitability control of the central gray matter. In the first, extra-cellular potassium homeostasis is challenged at long intervals and in the second, a wave is trapped in a rin...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652009000100006
更新日期:2009-03-01 00:00:00
abstract::Since William James (1890) first distinguished primary from secondary memory, equivalent to short- and long-term memory, respectively, it has been assumed that short-term memory processes are in charge of cognition while long-term memory is being consolidated. From those days a major question has been whether short-te...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章,评审
doi:10.1590/s0001-37652000000300009
更新日期:2000-09-01 00:00:00
abstract::The kidneys in two viviparous species of Neotropical lizards, Notomabuya frenata and Aspronema dorsivittatum (Mabuyidae), were investigated by light and scanning electron microscopy in order to determine the presence of the sexual segment of the kidney (SSK) and to study its morphology. The individuals used in this st...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201820170871
更新日期:2018-08-01 00:00:00
abstract::1) The presence of histamine in prickles and lead and stem tissues of Cnidosculus oligandrus (Mull. Arg) Pax & Hoffm (Euphorbiaceae) is reported. 2) Prickles on stems and leaves have larger amounts of histamine, as determined by the isolated guinea-pig ileum and by fluorimetry of the condensation product of the histam...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:
更新日期:1983-01-01 00:00:00
abstract::The storage of high level radioactive waste is still an unresolved problem of the nuclear industry, being geological disposal the most favoured option and, naturally, the one requiring the strongest geo-mechanical input. Most conceptual designs for the deep geological disposal of nuclear waste envisage placing the can...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652010000100013
更新日期:2010-03-01 00:00:00
abstract::Urolithiasis is a disorder of kidneys in which stones formation occur due to the excessive deposition of minerals in the urinary tract. It affects 12% of the population worldwide. Salvia hispanica seeds are rich source of quercetin which has preventive role in renal stone formation. The study objective was to explore ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765202020200067
更新日期:2020-11-16 00:00:00
abstract::The Cyperaceae species are present in different ecosystems and constitute the herbaceous extract. Of the approximately 5,500 species of the family; a third has Kranz anatomy, representing an important characteristic of the taxonomy and phylogeny of the group. In Cyperus laxus L. (non-Kranz) and Fimbristylis dichotoma ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/S0001-37652013005000032
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abstract::Urotrema scabridum Braun 1900 and Urotrema macrotestis Mané-Garzón and Telias 1965 are reported from the small intestine of Eumops glaucinus (Wagner, 1843). The species were differentiated by the body width, the size and position of acetabulum, the size of testis, the caecal termination, and the distribution of vitell...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201820180648
更新日期:2019-03-21 00:00:00
abstract::Chicken meat in two different forms (chicken meat and chicken meat powder) were added into white flour and whole wheat blend baguette bread formulations for protein enrichment and finally developing new and healthy snacks. The chicken meat and powder levels were 10% for white flour baguette, and 15% for whole wheat bl...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201620150059
更新日期:2016-10-01 00:00:00
abstract::This study investigated the physiological effects of a pesticide based on Bacillus thuringiensis (Dipel-WP®) added in the water and diet of Piaractus mesopotamicus during 24 and 48 h. It was added 0.13 g of de B. thuringiensis per kg of commercial feed; and for the fish subjected to the biopesticide in the water of th...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201920180474
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abstract::Limnoperna fortunei, an Asiatic rivers bivalve has become a worldwide problematic invasive species causing several water quality and macrofouling problems. In the Neotropical region it was first recorded in 1991 in the Rio de la Plata coast, Buenos Aires province. Since this, it showed a quick upstream invasion into t...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652005000200004
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abstract::The Bahía Blanca estuary (Argentina) has a morphological configuration resulting from hydrological and sedimentary processes related to Late Quaternary sea level changes. This estuarine system occupies a large coastal plain with a dense net of tidal channels, low-altitude islands and large intertidal flats. Little is ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:
更新日期:2014-06-01 00:00:00
abstract::Analogue experiments were carried out to get insights into the processes governing positive inversion during the foreland propagating thrust tectonics in the southern Serra do Espinhaço, a Brasiliano/Panafrican foldthrust belt in southeast Brazil. In particular, model listric half-grabens were inverted by applying con...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652006000200012
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abstract::Pathogenic microbial detection and control in laboratory animal facilities is essential to guarantee animal welfare, data validity and reproducibility. Helicobacter spp. are known to affect mice health, what may interfere with experimental outcomes. This study aimed to screen for Helicobacter spp. in mice from animal ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765202020191517
更新日期:2020-01-01 00:00:00
abstract::Helicoverpa gelotopoeon is an endemic pest of South America that affects soybean and other important crops. Life tables are a fundamental tool used to study insect populations, resulting in crucial information for integrated pest management programs. Therefore, the aim of this study was to evaluate the biotic potentia...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201820180318
更新日期:2018-10-01 00:00:00
abstract::A new species of the reticulatus species group, C. castelloni Santarém and Felippe-Bauer, is described and illustrated based on female specimens from the state of Amazonas, Brazil. A systematic key, wing photographs and table with numerical characters of females and a synopsis of 24 species of the Culicoides reticulat...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201520140517
更新日期:2015-04-01 00:00:00
abstract::Memora nodosa is popularly known as "caroba" and widely found in the Cerrado regions of Brazil. In traditional medicine, the leaves and stems are used for the healing of external ulcer and the roots for abdominal pain. This study investigated the effect of ethanolic roots extract of Memora nodosa (EMN) on the gastric ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201620150716
更新日期:2016-07-11 00:00:00
abstract::the focus ofthis study was to testthe hypothesisthatthere would be no difference betweenthe biocompatibility of silicon dioxide nanofilms used as antimicrobial agents. Sixty male Wistar rats were divided into 4 groups (n=15): Group C (Control,Polyethylene), Group AR (Acrylic Resin), Group NP (Acrylic Resin coated with...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765202020181120
更新日期:2020-04-17 00:00:00
abstract::The present work analyzes the different modalities of protection of the intellectual creations in the biotechnology agricultural field. Regarding the Brazilian legislations related to the theme (the Industrial Property Law - no. 9. 279/96 and the Plant Variety Protection Law - no. 9. 456/97), and based in the internat...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652011000200029
更新日期:2011-06-01 00:00:00
abstract::Drosophila serido and D. antonietae are sibling species belonging to the Drosophila buzzatii cluster. Morphologically, they can only be discriminated by quantitative traits. In this paper we analyze the length and equalized average curvature of four regions of the aedeagus of D. antonietae and D. serido. Specimens of ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652006000200002
更新日期:2006-06-01 00:00:00
abstract::To understand the increasingly tenuous relationship between ourselves and the finite resource base upon which we depend for all sustenance, an exploration of recent history and basic human behavior is warranted. An attempt is made to shed light on how short-term economic demands have come to take priority over nearly ...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201920190236
更新日期:2019-07-29 00:00:00
abstract::Arithmetic map operations are very common procedures used in GIS to combine raster maps resulting in a new and improved raster map. It is essential that this new map be accompanied by an assessment of uncertainty. This paper shows how we can calculate the uncertainty of the resulting map after performing some arithmet...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/0001-3765201820170589
更新日期:2018-08-01 00:00:00
abstract::This paper discusses the facies distribution of Mesozoic eolian sandstones between the Sanga do Cabral and Botucatu formations and also their contact relationships, in São Leopoldo area, State of Rio Grande do Sul (RS), southern Brazil. The main distinctive characteristics regarding these sandstones and formations are...
journal_title:Anais da Academia Brasileira de Ciencias
pub_type: 杂志文章
doi:10.1590/s0001-37652000000200010
更新日期:2000-06-01 00:00:00