منابع مشابه
Alterations in synaptic strength preceding axon withdrawal.
Permanent removal of axonal input to postsynaptic cells helps shape the pattern of neuronal connections in response to experience, but the process is poorly understood. Intracellular recording from newborn and adult mouse muscle fibers temporarily innervated by two axons showed an increasing disparity in the synaptic strengths of the two inputs before one was eliminated. The connection that sur...
متن کاملNail Withdrawal and Pull-Through Strength of Structural-Use Panels
An extensive test program was conducted to develop nail withdrawal design values for wood structural panels. Tested variables included: nail type (plain shank vs. deformed shank), panel type (plywood vs. OSB) and thickness, and exposure condition. Testing followed the procedures described in ASTM D1761. Based on the test results, the recommended allowable nail withdrawal strength for plywood an...
متن کاملPigmentations of the Nails
Punctate leukonychia is particularly frequently seen in young girls when they start to perform their own manicure. It is thought to be of traumatic origin, but this only explains a part of the cases. Punctate und short striate leukonychia is often a sign of a hammer blow when it overlies a subungual hematoma. Crush injuries are usually bigger (Figure1). Transverse leukonychia may be a sign of l...
متن کاملA Two Parameter Fracture Mechanics Approach to Analyze Threaded Fasteners of A High Strength Steel
This paper presents a numerical investigation using the two-parameter fracture mechanics approach for studying threaded fastener geometries. It was found that the constraint arising from the presence of a surface crack in a threaded fastener does influence the stress in the forward sector. Consequently, the actual stress field shows a deviation from the theoretical HRR solution. Implementation ...
متن کاملthe effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
ذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Structural Engineering
سال: 2001
ISSN: 0733-9445,1943-541X
DOI: 10.1061/(asce)0733-9445(2001)127:4(442)