|
|
|
|
|
| Yáñez,E.; Silva,C.; Nieto,K.; Barbieri,M.A.; Martínez,G.. |
| A work of gathering historical fishing (catch, fishing effort, CPUE, characteristics and operation of purseiner fleet) and satellite (NOAA, SeaStar and SeaWind) database of northern Chile, and fishing and oceanographic in situ sampling for validation purpose is made. With this information and the use of geographical information system (GIS) the distribution of pelagic resources and the associated environmental conditions (sea surface temperature, thermal gradients, chlorophyll concentration and wind fields) are analysed in order to develop a probable fishing ground (PFG) index prediction model. A PFG model of anchovy (Engraulins ringens) is operative for the northern Chile. The impact of the use of PFG charts was evaluated analyzing the operational... |
| Tipo: Journal article |
Palavras-chave: Pelagic fisheries; Northern Chile; Remote sensing; GIS; PFG index and model. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382004000300048 |
| |
|
| |
|
|
| Carreira,J.T.; Trevizan,J.T.; Kipper,B.H.; Perri,S.H.V.; Carvalho,I.R.; Rodrigues,L.H.; Silva,C.; Koivisto,M.B.. |
| The routine semen evaluation assessing sperm concentration, motility and morphology, does not identify subtle defects in sperm chromatin architecture. Bulls appear to have stable chromatin, with low levels of DNA fragmentation. However, the nature of fragmentation and its impact on fertility remain unclear and there are no detailed reports characterizing the DNA organization and damage in this species. The intensive genetic selection, the use of artificial insemination and in vitro embryo production associated to the cryopreservation process can contribute to the chromatin damage and highlights the importance of sperm DNA integrity for the success of these technologies. Frozen-thawed semen samples from three ejaculates from a Nellore bull showed high... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Bovine; Chromatin integrity; Protamine; Sperm morphology. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000200417 |
| |
|
|
| Mirande,V.; Tracanna,B. C.; Seeligmann,C . T.; Cangemi,R.; Aulet,O.; Cecilia,M.; Silva,C.; Binsztein,N.. |
| Vibrio cholerae muestra gran diversidad serológica en base a su antígeno somático O, conociéndose al menos 200 serogrupos. De éstos, solamente O1 y O139 son causantes de epidemias o pandemias. En Latinoamérica el serogrupo O1 reapareció en 1991, tras cien años de no presentar brotes en el continente. Esta bacteria sobrevive y se multiplica asociada al plancton, independientemente de la aparición de infecciones humanas. Desde la década del noventa, en Tucumán, se detectaron casos esporádicos de diarrea por Vibrio cholerae no-O1. El objetivo del presente trabajo fue estudiar la posible relación entre la presencia de especímenes de fitoplancton, variables fisicoquímicas y aislamientos de Vibrio cholerae en ríos de Tucumán. Se realizaron 18 campañas en los... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fitoplancton; Reservorio; Vibrio cholerae; Fisicoquímica; Ríos; Tucumán. |
| Ano: 2007 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722007000200007 |
| |
|
|
| Pereira,J.S.F.; Gonçales,N.S.L.; Silva,C.; Lazarini,M.S.K.; Pavan,M.H.P.; Fais,V.C.; Gonçales Júnior,F.L.. |
| Anti-HBc positivity is a frequent cause of donation rejection at blood banks. Hepatitis B virus (HBV) infection may also occur in HBsAg-negative patients, a situation denoted occult infection. Similarly, very low levels of HBV-DNA have also been found in the sera of patients with chronic hepatitis C virus (HCV) infection, even in the absence of serum HBsAg. Initially we searched for HBV-DNA in serum of 100 blood donors and 50 HCV-infected patients who were HBsAg negative/anti-HBc positive by nested-PCR and by an HBV monitor commercial test for HBV-DNA. Anti-HBs seroconversion rates were measured in 100 blood donors and in 22 patients with chronic HCV infection after HBV vaccination to determine if the HBV vaccination could eliminate an occult HBV infection... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Polymerase chain reaction; Anti-HBc-positive patients; HCV co-infection; HBV vaccination; Occult HBV infection. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000400013 |
| |
|
|
|
