The avian inner perivitelline layer (IPVL), a homologous structure to the mammalian zona pellucida, is deposited between the granulosa cells and the oocyte cell membrane during folliculogenesis. The glycoprotein meshwork of the IPVL forms a 3-dimensional matrix and possesses important functions in the fertilization process: it contributes to the binding of avian spermatozoa to the oocyte and in...

this investigation postulatesvygotsky’s (1978) concept of zone of proximal development (zpd) and his related “scaffolding” metaphor as well as norton’s (2006) principles of sociocultural identity as its theoretical foundation.thisresearchintends to scrutinizethe socioculturally-oriented mediationalmechanisms utilized in student-student and student-teacher collaborationsin an iranian efl writing...

Chimeric antigen receptor T-cell (CART) therapy has led to lasting remissions in hematologic cancers and autoimmune diseases including systemic lupus. Long-lived memory CARTs predict clinical response, but mechanisms for CART differentiation after activation remain unclear. Here, we use a novel proximity-labeling method isolate first-division proximal distal daughter cells show that activated h...

VR has shown positive growth in the world recent years, which is mainly due to projects such as learning, games, entertainment and experiential activities. changed way of life users, providing users with more interesting interactions immersive experiences. This study aims investigate students’ practical capabilities learning effectiveness under instruction strategy integrating virtual reality i...

RESUMO O objetivo deste trabalho foi avaliar o efeito da aplicação de tratamento térmico alívio tensão (TTAT) e das temperaturas preaquecimento interpasse sobre a microestrutura, presença zonas parcialmente diluídas (ZPD), microdureza gradiente composição ao longo interface depósitos liga AWS E NiCrMo 3 os aços AISI 8630M 4130 aplicados por dois processos soldagem (GMAW PTA-P). Para isto foram ...

Intelligent tutoring systems offer a way for schools to meet the challenges of providing effective instruction to students with a diverse range of abilities, interests and needs [Self, 1999]. AnimalWatch is a computer-based tutor that uses artificial intelligence techniques to provide individualized math instruction for 9-12 year olds. Math word problems are integrated into narratives about end...

evidence acquisition a search of pubmed for studies on proximal fifth metatarsal fracture and jones fracture focusing on the classification and management was performed. the reference list of the retrieved articles was searched for additional related studies. conclusions lawrence and botte’s classification of proximal fifth metatarsal fractures is recommended by experts, due to its implication ...

The punctum fixum-punctum mobile model has been introduced in previous publications. It describes general principles of intersegmental neuromuscular succession patterns to most efficiently generate specific movement intentions. The general hypothesis of this study is that these principles-if they really do indicate a fundamental basis for efficient movement generation-should also be found in in...