We study a chemical gelation model in two dimensions which includes both monomer aggregations and bond fluctuations. Our numerical simulation shows that a sol-gel transition occurs when an initial monomer concentration is above a critical concentration. Fractal aggregates grow until the sol-gel transition occurs. After the gelation, however, bond fluctuations break the fractal structure and an ...

I nterest in the phenomenon of protein aggregation is as old as protein research. For example, changes in activity and covalent structure accompanying ‘‘coagulum’’ formation by insulin were important to the elucidation of the molecular origins of hormone action (1). In recent memory, the phenomenon of aggregation served only as an annoyance to the research biochemist and a serious economic cons...

To study the seismic performance of hollow columns with fiber lightweight aggregate concrete, a quasi-static test on eight concrete under lateral low-cycle reversed loading and axial force is presented in this article. The effects dosage plastic-steel fibers (0, 3, 6 9 kg/m3, respectively), steel (25, 50 75 respectively) compression ratio (0.4 0.6, mechanical properties such as capacity load, s...

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Endotoxin, an outer membrane component of gram-negative bacteria, plays an important role in the pathogenesis of septic shock. Endotoxin adsorption therapy by polymyxin B-immobilized fiber column hemoperfusion (PMX) has been used for the treatment of septic shock patients in Japan since 1994. The covalent binding of polymyxin B onto the surface of the polystyrene-based carrier fiber in PMX inac...

!is thesis concerns aspects of Forkhead gene biology and it’s relation to mammalian development. Genes from three subclasses are discussed, Foxj3, Foxf1 and f2, and Foxe3. We have identified and characterized a novel forkhead gene, FoxJ3, that is expressed in neuroectoderm, neural crest and mytome, suggesting possible function in the nervous system and muscle. !e myotome, which will develop int...

The huge quantity of concrete is consumed by the construction industry all over the world, probably second largest after water. In India, the conventional concrete is produced by using natural sand from riverbeds as fine aggregate. Dwindling sand resources poses the environmental problem and hence government restrictions on sand quarrying resulted in scarcity and significant increase in its cos...

PURPOSE Fiber carbon is the most common material used in treating couch as it causes less beam attenuation than other materials. Beam attenuation replaces build-up region, reduces skin-sparing effect and causes target volume under dosage. In this study, we aimed to evaluate beam attenuation and variation of build-up region in 550 TxT radiotherapy couch. MATERIALS AND METHODS In this study, we...

Biodegradable and eco-friendly composite adsorbent was synthesized from modified jute fiber gelatin evaluated its efficacy in removing cadmium (Cd2+), lead (Pb2+), chromium (Cr3+) ions an aqueous solution. The prepared sample characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive X-ray analyses, which revealed that successfully intercalated ...

during the last decades a new class of materials named fiber/metal laminates (fmls) was introduced. it is a hybrid composite consisting of alternating thin layers of metal sheets and fiber-reinforced composite material. fmls have both low weight and good mechanical properties. in this study, the impact behavior of this attractive material is investigated. the effect of fiber angle, stacking seq...