Distinctive encoding of a subset of DRM lists yields not only benefits, but also costs and spillovers.

Prior research has emphasized that performing distinctive encoding on a subset of lists in the DRM paradigm suppresses false recognition; we show that its benefits can be mitigated by costs and spillover effects. Within groups read half the DRM lists and solved anagrams for the other half using a strategy that emphasized either item-specific or relational processing. Their recognition was compared to three pure-list control groups (read, item-specific generation, relational generation).

The structure and biochemistry of charophycean cell walls: I. Pectins of Penium margaritaceum.

Plant cell walls are essential for proper growth, development, and interaction with the environment. It is generally accepted that land plants arose from aquatic ancestors which are sister groups to the charophycean algae (i.e.

Investigation of mechanical properties of diatom frustules using nanoindentation.

Diatom frustules have been identified as potential candidate materials for nanotechnology applications. However, for successful engineering applications, their mechanical properties must be fully determined. Toward this end, indentation hardness and elastic properties frustules of the centric diatom Coscinodiscus concinnus were evaluated using nanoindentation.

Extracellular matrix assembly in diatoms (Bacillariophyceae). Iii. Organization Of fucoglucuronogalactans within the adhesive stalks of achnanthes longipes.

Achnanthes longipes is a marine, biofouling diatom that adheres to surfaces via adhesive polymers extruded during motility or organized into structures called stalks that contain three distinct regions: the pad, shaft, and collar. Four monoclonal antibodies (AL.C1-AL.

Extracellular Matrix Assembly in Diatoms (Bacillariophyceae) (II. 2,6-Dichlorobenzonitrile Inhibition of Motility and Stalk Production in the Marine Diatom Achnanthes longipes).

The cellulose synthesis inhibitor 2,6-dichlorobenzonitrile (DCB) and the DCB analogs 2-chloro-6-fluorobenzonitrile, 3-amino-2,6-dichlorobenzonitrile, and 5-dimethylamino-naphthalene-1-sulfonyl-(3-cyano-2, 4-dichloro)aniline (DCBF) inhibited extracellular adhesive production in the marine diatom Achnanthes longipes, resulting in a loss of motility and a lack of permanent adhesion. The effect was fully reversible upon removal of the inhibitor, and cell growth was not affected at concentrations of inhibitors adequate to effectively interrupt the adhesion sequence. Video microscopy revealed that the adhesion sequence was mediated by the export and assembly of polymers, and consisted of initial attachment followed by cell motility and eventual production of permanent adhesive structures in the form of stalks that elevated the diatom above the substratum.

Extracellular Matrix Assembly in Diatoms (Bacillariophyceae) (I. A Model of Adhesives Based on Chemical Characterization and Localization of Polysaccharides from the Marine Diatom Achnanthes longipes and Other Diatoms).

Extracellular adhesives from the diatoms Achnanthes longipes, Amphora coffeaeformis, Cymbella cistula, and Cymbella mexicana were characterized by monosaccharide and methylation analysis, lectin-fluorescein isothiocyanate localization, and cytochemical staining. Polysaccharide was the major component of adhesives formed during cell motility, synthesis of a basal pad, and/or production of a highly organized shaft. Hot water-insoluble/hot 0.

EMBASE remains EMBASE--on every host? A comparative analysis of EMBASE on the hosts DATA-STAR, DIALOG, DIMDI, and STN.

Differing results of the same search request processed on different hosts led the authors to investigate this issue more thoroughly. Two authors, two journal titles, two drug names, and two topics of a general medical nature were retrieved under identical circumstances and conditions on the hosts DATA-STAR, DIALOG, DIMDI, and STN. Comparing the figures revealed that none of the nine search request produced an identical result on all hosts.

Use of Per-C-Deuterated myo-Inositol for Study of Cell Wall Synthesis in Germinating Beans.

Cell wall polysaccharides of the hypocotyl and roots in germinating beans (Phaseolus vulgaris L.) were selectively labeled in arabinosyl, xylosyl, and galacturonosyl residues by per-C-deuterated myo-inositol, which was introduced through 72 hours of imbibition. Glucuronate residues remained unlabeled.

Simple method for bleeding the unanaesthetized rat by tail venipuncture.

A technique is described for the intermittent collection of blood from the rat tail. By using commonly available equipment, blood samples can easily be obtained from rats without the need for anaesthesia. The development of this technique makes the rat more readily available as an animal model for repeated withdrawals of small blood samples for pharmacokinetic or bioavailability evaluations.

[A study of the level of human contamination by cadmium (results of a regional survey) (author's transl)].

In order to estimate the level of human contamination by cadmium, the metal was analysed in liver and kidneys of 268 persons after death. Analysis was performed by using atomic absorption spectrometry after nitroperchloric mineralization. The concentrations thus determined allowed to calculate, by means of some approximations, the total amounts of cadmium in these organs and also in human body.

Cellulose in the cell walls of the bangiophyceae (rhodophyta).

Mechanically isolated cell walls of the conchocelis phase of Bangia fuscopurpurea yield cellulose II (regenerated cellulose) upon treatment with Schweitzer's reagent. X-ray powder analysis and thin-layer chromatography of partial hydrolyzates confirm the presence of cellulose in this extract. Gas-liquid chromatographic analysis of wall hydrolyzates indicates that xylose, mannose, galactose, and glucose are major wall constituents.