Bulk metallic glasses (BMGs) have been reported to have large variability in mode I fracture toughness. In this study, alternating soft and hard regions were created in a Zr₅₂.₅Ti₅Cu₁₈Ni₁₄.₅Al₁₀ (at%) BMG via mechanical imprinting at room temperature. While only 50% of as-cast samples demonstrated plastic deformation during mode I fracture...
The Llanrwst Pb–Zn veinfield occupies fractures in an Ordovician volcano-sedimentary sequence, with three separate mineralizing events (M₁, M₂ and M₃). The Llanfair Pb–Zn–Cu veinfield consists of sporadic mineralization in Silurian sediments. Fluid inclusion data from both veinfields indicate mineralization took place from CaCl₂-bearing brines, up to 26 wt % NaCl...
Bulk metallic glasses (BMGs) are relatively new amorphous materials that have received much attention in recent years. Rapid cooling methods from the liquid state provides the possibility to bypass crystallization during solidification. Due to the lack of crystal defects such as grain boundaries and dislocations, BMGs can have some special...
The purpose of this study is to determine factors that encourage second
generation Latina/os to obtain a community college education. A critical qualitative
ethnography focused on "Testimonio" was used in conducting this study. The key
findings were formulated around three critical research questions. In relation to each
research question, three...
Four experiments were conducted to determine oxytocin concen tration of bovine luteal tissue at different stages of the estrous cycle and to study the effects of prostaglandins F₂α (PGF₂α), E₂ (PGE₂), luteinizing hormone (LH), cycloheximide, colchicine and cytochalasin B on oxytocin synthesis and release in vitro. In experiment 1, luteal...
High-pressure torsion (HPT) is used to investigate the formation of a new metal system by the direct bonding of separate disks of Al and Cu by processing at room temperature under a compressive pressure of 6.0 GPa and with increasing numbers of HPT turns up to 60. A detailed examination...
The literature on religiousness, spirituality (R/S), and health has increased dramatically in
the past decade, but suffers from a lack of integrative theoretical models and well-defined
constructs. Drawing on self-regulation theory, we hypothesized that the effects of religiousness
(e.g., affiliation, service attendance) on health affects behavioral self-regulation of health habits;...
Motion capture data is a digital representation of the complex temporal structure of human motion. Motion capture is widely used for data-driven animation in sports,medicine and entertainment, because of its ability to capture complex and realistic
motions. Due to its efficiency and cost, methods for reusing collections of motion capture...
La presente tesis provee una crítica al Programa de Educación para la Sexualidad y Construcción de Ciudadanía en Colombia y examina contribuciones teóricas de pedagogías feministas, Queer y pedagogías críticas con el fin de crear alternativas para la práctica de una educación sexual fundamentada en la justicia social. El desarrollo...
Processing of metals through the application of high-pressure torsion (HPT) provides significant grain refinement in bulk metals at ambient temperatures. The ultrafine-grained (UFG) materials processed by HPT generally demonstrate the superior physical and mechanical characteristics. For utilizing the benefit of HPT, the feasibility of conventional HPT processing was demonstrated recently...