The bacterial actin homolog ParM has always been modeled as a polar filament, comprising two parallel helical strands, like actin itself. I present arguments here that ParM may be an apolar filament, in which the two helical strands are antiparallel.

In later stages of vasculoangiogenesis a vascular network is going through a metamorphosis for optimal perfusion and economy of energy. In this study we make a quantitative approach to phenomena of remodelling in a bioartificial neovascular network and suggest variance of calibre as a parameter of neovascular maturation. For this study, 18 male Lewis rats were subjected to the AV loop operation...

the aim of this study was investigating some blood parameters of blue-neck male ostriches (struthio camelus) with 4 months old after feeding a diet containing 3% sunflower oil for two months. in the morning, after about 12 h of fasting, some blood samples were collected from the wing vein of ostriches at the beginning and 60 days of study in department of animal sceince arak university . the pl...

With the retirement of the space shuttle near and rising fuel prices driving a demand for more efficient travel, alternative engine technology is being heavily researched. The scramjet, or supersonic combustion ramjet, has proven to be a promising development in reusable hypersonic transportation. Flight testing these engines, however, is very expensive and no scramjet flight has yet been recov...

Chunk parsing has focused on the recognition of partial constituent structures at the level of individual chunks. Little attention has been paid to the question of how such partial analyses can be combined into larger structures for complete utterances. Such larger structures are not only desirable for a deeper syntactic analysis. They also constitute a necessary prerequisite for assigning func...

Estimation is the process of determining a likely value for a population parameter (eg, the true population mean or proportion) based on a random sample. In practice, a sample is drawn from the target population, and sample statistics (eg, the sample mean or sample proportion) are used to generate estimates of the unknown parameter. The sample should be representative of the population, ideally...

conclusions troxerutin may reduce the vascular complications and tissue injuries induced by chronic diabetes in rat aorta through increasing the activity of tissue antioxidant system and reducing the level of lipid peroxidation. materials and methods male wistar rats were randomly divided into four groups (n = 8/each): control, control plus troxerutin, diabetic and diabetic plus troxerutin. dia...

conclusions major vascular injuries in our center occurred in young men, frequently because of stab wounds. popliteal injuries mostly caused by motor vehicle accidents was the second most common arterial injury, followed by combined ulnar and radial injuries. vascular reconstruction in the first hours after trauma may prevent many unnecessary and preventable amputation procedures. results most ...

introduction: in the absence of microvascular replantation or in crash injury cases in which obtaining an acceptable function is not possible, amputation of the injured finger seems to be the best treatment modality. some studies recommended leech therapy for this kind of injury after vascular repair to decrease venous congestion. case presentation: in this case report, the authors presented a ...

vascular complications by compromising the blood flow to the allograft can have significant and sometimes life-threating consequences for the patient. high level of suspicion and aggressive utilization of diagnostic modalities can lead to early diagnosis and salvage of the allograft.  this review will summarize the current trends in the management of vascular complications after liver transplan...