Vitrification
Mostrando 1-12 de 63 artigos, teses e dissertações.
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1. Recombinant gonadotropin therapy to improve spermatogenesis in nonobstructive azoospermic patients – A proof of concept study
ABSTRACT Purpose: Nonobstructive azoospermia (NOA) associated with primary spermatogenic failure is a common cause of male infertility usually considered untreatable; however, some reports have suggested that hormonal stimulation to boost the intra-testicular testosterone level and spermatogenesis might increase the chance of achieving pregnancy using homol
International braz j urol. Publicado em: 2022
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2. Cryopreservation of Brazilian green dwarf coconut plumules by droplet-vitrification
RESUMO: O objetivo desse estudo foi avaliar o efeito das soluções de vitrificação e do tempo de exposição na criopreservação de plúmulas de coqueiro anão verde do Brasil de Jiqui (BGD), pela técnica de vitrificação em gotas. Os explantes foram excisados de frutos maduros oriundos do Banco de Germoplasma Ativo de Embrapa Tabuleiros Costeiros, Se
Cienc. Rural. Publicado em: 13/12/2019
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3. Use of conjugated linoleic acid (trans 10, cis 12) to cultivate bovine embryos: effect on cryoresistance and lipid content
ABSTRACT This study evaluated the effect of the addition of conjugated linoleic acid (CLA) to in vitro culture on viability, lipid content, and cryoresistance of bovine embryos at different in vitro culture times. Cumulus oocyte complexes (N = 974) were maturated in vitro for 22 h. In vitro fecundation ensued for 18 h. Viable zygotes were cultivated in vitro
R. Bras. Zootec.. Publicado em: 30/09/2019
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4. Phospholipid composition and resistance to vitrification of in vivo blastocyst of a Brazilian naturalized porcine breed
RESUMO Blastocistos de suínos foram submetidos ao MALDI-TOF para se identificarem os principais fosfolipídios (PL). Depois, parte destes embriões (D6) foram vitrificados (n=52), ou permaneceram frescos (grupo controle, n=42). Após o aquecimento, os blastocistos foram cultivados in vitro para se avaliar a reexpansão e a eclosão (BE) às 24 e 48 horas. F
Arq. Bras. Med. Vet. Zootec.. Publicado em: 14/06/2019
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5. Estudios arqueometalúrgicos sobre objetos del sitio Falda del Cerro (Catamarca, Argentina)
ABSTRACT Falda del Cerro is an archaeological site located on the western slope of the Aconquija Mountains (Catamarca, Argentina) [1]. Its human occupation is radiocarbonically dated to the first centuries AD [2]. The site presents circular and semi-circular enclosures constructed with stone walls which foundations are dug into the bedrock. Associated potter
Matéria (Rio J.). Publicado em: 19/07/2018
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6. Random-start controlled ovarian stimulation for emergency fertility preservation in a patient with myelodysplastic syndrome: a case report
This study reports a case of a gonadotropin-releasing hormone agonist trigger in a young female with myelodysplastic syndrome (MDS) who underwent fertility preservation using random-start controlled ovarian stimulation. This method involves the stimulation of the ovary regardless of a patient's menstrual-cycle phase. A review of the related literature is als
Braz J Med Biol Res. Publicado em: 10/05/2016
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7. Criopreservação de mangabeira (Hancornia speciosaGomes): um protocolo para armazenamento a longo prazo
O objetivo deste trabalho foi avaliar a eficiência da droplet vitrification e vitrificação na criopreservação de ápices caulinares de mangabeira. Foi avaliada a retomada de crescimento de ápices de mangabeira criopreservados conforme a técnica de droplet vitrificationutilizando diferentes tempos de tratamento com a solução de vitrificação (15, 30
Acta Sci., Agron.. Publicado em: 2015-09
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8. Inertization of small-scale chemical wastes using iron phosphate glass
The viability of small-scale heavy-metal waste immobilization into iron phosphate glasses was investigated. Several waste forms containing different amounts of heavy-ion wastes were evaluated (5%, 10%, 15%, 20%, 26%, 33%, 40% and 50% by mass) and their X-ray diffraction patterns revealed that no crystallization occurred in glasses with waste concentrations u
Quím. Nova. Publicado em: 2014-07
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9. Histological study of rat ovaries cryopreserved by vitrification or slow freezing and reimplanted in the early or late postmenopausal stage
PURPOSE: To compare two rat ovary cryopreservation techniques (vitrification vs. slow freezing) and two postmenopausal stages (early vs. late) with regard to graft take.METHODS:Thirty-three Wistar rats were submitted to bilateral oophorectomy. One ovary was submitted to histological analysis while the other was cryopreserved by slow freezing or vitrification
Acta Cir. Bras.. Publicado em: 2014-05
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10. Sobrevivência de ápices caulinares de cana-de-açúcar após criopreservação por "droplet-vitrification"
O objetivo deste trabalho foi avaliar a fitotoxicidade da solução de vitrificação de plantas (PVS2) e a sobrevivência de ápices caulinares de cana-de-açúcar, variedade SP716949, após criopreservação por "droplet-vitrification". Ápices caulinares foram pré-cultivados por 24 horas em meio MS com sacarose a 0,3 mol L-1 e expostos por 0, 20 ou 30 mi
Pesq. agropec. bras.. Publicado em: 2013-11
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11. Estudos e propriedades mecânicas de um novo tipo de bloco cerâmico híbrido para edificações em alvenarias estruturais
This dissertation presents a hybrid ceramic block the use of which reside in the buildings executed with walls. Initially, we conducted a survey on the requirements and / or norms prevailing in Brazil about structural ceramic blocks, making use of the experiences in other countries. This work seeks new materials and / or products in order to maintain or incr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/02/2012
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12. Desenvolvimento de protocolo para criopreservação de folículos ovarianos de peixes usando vitrificação / Development of cryopreservation protocol for fish ovarian follicles using vitrification
Cryopreservation of fish embryos has been under investigation for over two decades; however every protocol tested so far has failed. The use of oocytes has more recently been reported as an alternative, nevertheless most of the studies were carried out using a single technique - controlled slow cooling - and success also remains elusive. Vitrification is an
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012