Several lineages of teleost fishes have independently derived skeletons composed solely of acellular bone, a tissue without obvious advantages over bone that has osteocytes in the matrix. There is no consensus for the functional role of acellular bone, as factors such as salinity, activity level and gross morphology have been shown to be poor predictors of acellularity. We used a three-point be...

Type 2 diabetes (T2D) impacts multiple organ systems including the circulatory, renal, nervous and musculoskeletal systems. In collagen-based tissues, one mechanism that may be responsible for detrimental mechanical impacts of T2D is the formation of advanced glycation end products (AGEs) leading to increased collagen stiffness and decreased toughness, resulting in brittle tissue behavior. The ...

The research is focused on the study of mechanical strength properties of bamboo to establish if bamboo would play a complementary role to wood in both furniture making and construction works as a sustainable material for the wood industries. The research also highlighted the dwindling supply of wood as a main source of material for furniture and construction works in Zimbabwe due to fire destr...

costs and train operations. The impact is sometimes magnified by imperfect or poorly understood techniques for predicting and detecting IJ failures. A common factor in many failures of bonded IJs is a tendency for the epoxy to come debonded from the rail or joint bar near the center of the joint (2). The debonded region starts small but grows with time and traffic, spreading outward toward the ...

This paper presents a new approach that can enhance the rotational capacity of exposed base plate connections without degrading initial stiffness or strength standard configuration. By inserting steel sleeve with designated geometry between and anchor rod washer, load path end be interrupted, promoting more ductile response. Exposed various geometries are numerically investigated using validate...

Since the discovery of the first metallic glass in 1960 (1), amorphous metals have been made in a variety of compositions. However, they have been largely fabricated as thin ribbons less than a millimeter in thickness because fast cooling rates (;10 K/sec) have been required to retain the metastable amorphous phase. Recently, however, a new class of amorphous metals has been developed which req...

background: organic agricultural pesticides are so stable in ecosystems and biosphere. these compounds affect soil conditions and agricultural products. the aim of this study was isolation of diazinon-degrading bacteria from kerman pistachio orchards, southeastern iran. methods: diazinon-degrading bacteria were enriched in bushnell-hass medium. identification and sequencing of prevalent degradi...

Abstract: Electromechanical coupling defines the ratio of electrical and mechanical energy exchanged during a flexure cycle of a piezoelectric actuator. This paper presents an analysis of the dynamic electromechanical coupling factor (dynamic EMCF) for cantilever based piezoelectric actuators and provides for the first time explicit expressions for calculation of dynamic EMCF based on arrangeme...