An allylic adenosine triphosphate analog (AATP) was tested as a substrate for commercially available DNA polymerases. All but one of the enzymes assayed incorporated AATP opposite thymidine (T) with concomitant termination of the elongation reaction. A concentration of only 1 microM was sufficient for complete termination of the polymerization reaction for a short template mediated by Ampli Taq...

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The effects of oral administration of pentazodne were compared with those of non-DDA analgesics given orally and with those of DDA analgesics given orally and parenterally in patients with intractable pain, over a period of three days while awaiting treatment by percutaneous electrical cordotomy. The dose of pentazodne varied from 25-100 mg four times per day, comparisons being made with the pr...

Properties of linear polyesters based on azoxybenzene and 2,2'-methylazoxybenzene moieties with linear, flexible spacers based on mixtures of dodecanedioic acid (DDA) and methyladipic acid (MAA), chiral or racemic, of various compositions (system MAA/DDA-8 and MAA/DDA-9, respectively) have been described. Substitution of methyl groups in the 2,2' or 3,3' positions of the mesogenic core Ieads to...

This study presents methods for treating a kind of nanoclay and investigates the effects of methylaluminoxane (MAO) exposure time and or dodecylamine (DDA) reflux time on in-situ polymerization of ethylene in the presence of nanoclay and examines the morphology and properties of the prepared polyethylene/clay nanocomposites. The results revealed that by increasing MAO exposure time productivity...

Bacterial spores such as Bacillus atrophaeus are one of the most resistant life forms known and are extremely resistant to chemical and environmental factors in the dormant state. During germination, as bacterial spores progress towards the vegetative state, they become susceptible to anti-sporal agents. B. atrophaeus spores were exposed to the non-nutritive germinant dodecylamine (DDA), a cati...

Background. Diverticular disease of the appendix (DDA) is a rare disease and it has been shown to be associated with locoregional neoplasms. This study was conducted to characterize clinicopathological features and to investigate its association with appendiceal neoplasms. Methods. We searched the records of the Department of Pathology at Farwaniya Hospital for cases of diverticular disease of ...

Discontinuous deformation analysis (DDA) is a discontinuum-based and implicit method for investigating the deformational behavior of block systems. The constant acceleration integration (CAI) scheme characterized by unconditional stability employed in traditional DDA. In this study, problems CAI regarding time step DDA are pointed out. A too large or small size adopted will have adverse effects...

Effects of the degree of deacetylation (DDA) and the molecular mass of chitosan oligosaccharides (CTS-OS), obtained from the enzymatic hydrolysis of high molecular weight chitosan (HMWC), on antitumor activity was explored. The DDA and molecular weights of CTS-OS were determined by matrix-assisted laser desorption/ionization-mass spectrometry (MALDI-TOF MS) analysis. The CTS-OS were found to be...

The objective of the present study was to prepare and characterize low molecular weight chitosan (LMWC) with different molecular weight and degrees of deacetylation (DDA) and to optimize their use in oral insulin nano delivery systems. Water in oil nanosized systems containing LMWC-insulin polyelectrolyte complexes were constructed and their ability to reduce blood glucose was assessed in vivo ...