نتایج جستجو برای: long chain n
تعداد نتایج: 1925325 فیلتر نتایج به سال:
BACKGROUND Ready-to-use therapeutic foods (RUTF) are lipid-based pastes widely used in the treatment of acute malnutrition. Current specifications for RUTF permit a high n-6 polyunsaturated fatty acid (PUFA) content and low n-3 PUFA, with no stipulated requirements for preformed long-chain n-3 PUFA. The objective of this study was to develop an RUTF with elevated short-chain n-3 PUFA and measur...
the composition of the essential oil from the stalks and flowers of rheum ribes l., growing in iran, were extracted by hydrodistillation and analyzed by gc-ms. thirty constituents representing 93.84% of rheum oil were identified. the oil was found to be rich in hydrocarbons especially long-chain n-alkanes (80.81%). the most abundant components in the oil included tricosane (26.29%), heneicosan...
A new procedure for the preparation of methyl esters from free fatty acids under mild conditions was investigated. Free fatty acids are dissolved in a mixture of chloroform-methanolic HCl-cupric acetate and kept at room temperature for 30 min for complete esterification. The method is suitable for esterification of long-chain acids, such as 18:0, and for very long chain acids, such as 24:0. Fat...
The desorption kinetics of polyethyleneglycols (PEGs) of varying chain length, N, have been studied on the surface of graphite. The chain ength dependence of the E des has been measured for PEGs and compared with those of n-alkanes and polyethyleneglycol dimethylethers PEG-DMEs) adsorbed on graphite. The short PEGs have higher E des than PEG-DMEs of comparable length. More importantly, in the s...
background & aim: in the survival data with long-term survivors the event has not occurred for all the patients despite long-term follow-up, so the survival time for a certain percent is censored at the end of the study. mixture cure model was introduced by boag, 1949 for reaching a more efficient analysis of this set of data. because of some disadvantages of this model non-mixtur...
One of the principal questions involving Markov chains is what are the long-time (asymptotic) properties of the chain? Before we can formulate the question precisely, we need to introduce some ideas. Suppose we have a Markov chain {Xn}n∈N on a finite or countable state space S with transition probabilities Pi,j = P (Xn+1 = j | Xn = i), i, j ∈ S. We let N denote the number of elements in S (note...
Low breast milk levels of long-chain n-3 fatty acids in allergic women, despite frequent fish intake
BACKGROUND Long-chain n-3 polyunsaturated fatty acids (PUFAs) have immune regulating and anti-inflammatory effects. However, their role in allergic disease is unclear. Allergic diseases are immunologically heterogeneous, and we hypothesized that n-3 fatty acid composition in serum and breast milk may vary according to clinical manifestations. Further, animal studies have shown reduction of seru...
The accurate partitioning of Ig H chain V(H)DJ(H) junctions and L chain V(L)J(L) junctions is problematic. We have developed a statistical approach for the partitioning of such sequences, by analyzing the distribution of point mutations between a determined V gene segment and putative Ig regions. The establishment of objective criteria for the partitioning of sequences between V(H), D, and J(H)...
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