A low-salt extract prepared from human erythrocyte membranes forms a solid gel when purified rabbit muscle G- or F-actin is added to it to give a concentration of approximately 1 mg/ml. This extract contains spectrin, actin, band 4.1, band 4.9, hemoglobin, and several minor components. Pellets obtained by centrifugation of the gelled material at 43,000 g for 10 min contain spectrin, actin, band...

Biofortification of cassava with the provitamin A carotenoid β-carotene is a potential mechanism for alleviating vitamin A deficiency. Cassava is a staple food in the African diet, but data regarding the human bioavailability of β-carotene from this food are scarce. The objective of the present study was to evaluate provitamin A-enhanced cassava as a source of β-carotene and vitamin A for healt...

A novel algorithm for class-A/AB power amplifiers (PA) enhancement is fully described. The principle is to find a combination of base current (gate voltage), collector voltage (drain voltage) and input power for each output power level so that the linearity/efficiency specifications of the application are satisfied. Based on a 1tone static characterization of the amplifier, the algorithm uses a...

There is a lack of educational technology to support cognitive systems engineering topics such as models of human performance in dynamic environments. This paper describes the Cognitive Systems Engineering Educational Software (CSEES) system, an integrated toolset designed to facilitate curricula related to human judgment and decision-making performance modeling and evaluation. CSEES provides s...

A single-stage 24 GHz triple stacked power amplifier using 0.13 μm CMOS process is demonstrated. To Compare with parallel current combining method, series voltage combining method using a stacked amplifier architecture can realize a large output voltage swing from the top transistor without exceeding the transistor breakdown voltage limitations. However, at high frequencies, parasitic capacitan...

The bulk structure of the ?-Al5Fe2 intermetallic compound consists in an ordered framework pentagonal antiprims with composition Al2Fe inside which nearly continuous chains fractionally occupied Al sites exist. At low temperature, ordering these channel atoms can occur, leading to various superstructures. Although Al5Fe2 phase is technological importance being present protective coating for ste...

Introduction The SPADI, developed by Roach et al in 1991, is a self-administered questionnaire designed to measure pain and disability associated with shoulder pathology in the outpatient setting. It consists of 13 items5 pain and 8 disability, all scored 0 to 100. All items are equally weighted then added for a percentage score 0 (best) to 100 (worst). Completion time is documented generally t...

In this paper we consider a simple model of random graph process with hard copying as follows: At each time step t, with probability 0 < α ≤ 1 a new vertex vt is added and m edges incident with vt are added in the manner of preferential attachment; or with probability 1−α an existing vertex is copied uniformly at random. In this way, while a vertex with large degree is copied, the number of add...

For a given N-vertex graph. H, a graph G obtained from H by adding t vertices a,nd some edges is called a t-FT (t-fault-toleran,t) graph. for H if even after deletin.g any t vertices from G, the remaining graph contains H as a subgraph. For an N-vertex hypercube QN, a t-FT graph with an, optimal number O(tN +t2) of added edges and maximum degree of O(N + t), and a, t-FT graph zuith O(tN log N) ...

A suspension of Ketawaspreparedby trypsinization of stock cultures in Blake bottles. After determining the cell count with a hemocytometer the suspension was diluted with medium to give a c@int of' 75,000 cells per 0. 9 ml. Using an automatic pi pette, 0. 9 m:1@. of the Hela suspension was delivered into each of the cups of the plastic panel and the test compound added in 0.1 ml. saline or in 0...