Reproductive Investment in Four Developmental Morphs of Streblospio (Polychaeta: Spionidae).

Per brood and per offspring C and N investment were examined in four developmental morphs of the spionid polychaete Streblospio: S. shrubsolii (direct development, D), S. benedicti (lecithotrophic, L), S.

Bronchiolitis obliterans organizing pneumonia associated with systemic lupus erythematosus.

Bronchiolitis obliterans organizing pneumonia (BOOP) is a pathologic entity characterized by the formation of plugs of fibrous tissue in bronchioles and alveolar ducts. It has been described in association with several connective tissue diseases including rheumatoid arthritis, polymyositis-dermatomyositis, and mixed connective tissue disease. Well-documented reports of BOOP in patients with systemic lupus erythematosus (SLE) are limited.

Use of time-resolved IR reflection and transmission as a probe of carrier dynamics in semiconductors.

We discuss the use of time-resolved IR reflection and transmission for studying semiconductor carrier dynamics. We solve Maxwell's equations for a nonhomogeneous carrier distribution in the limit of small perturbation. We show that the IR probe is sensitive to the spatial profile of the carrier density far below the surface.

Allometric relationships of the dentition of the great White Shark, Carcharodon carcharias, in forensic investigations of shark attacks.

As a result of a systematic morphometric study of shark dentitions, a system of notation for describing the location of shark teeth has been developed and is proposed as a standard to be adopted for use in similar studies in the future. The macroscopic morphology of White Shark teeth has been characterised in order to gain quantitative data which might assist in identification of these sharks from bite marks on victims or objects or from shark carcasses. Using these data, a nomogram has been developed which can be used to estimate the body length of a White Shark from measurements of tooth or bite mark morphology.

Luxatio erecta: a missed diagnosis.

A case of inferior glenohumeral dislocation (luxatio erecta) is presented. Although the classical presentation of luxatio erecta is considered pathognomonic, this case was initially misdiagnosed. This lead subsequently to the use of inappropriate reduction techniques.

A model for regional blood flow measurements during cardiopulmonary resuscitation in a swine model.

Recent reports examining regional blood flow during cardiopulmonary resuscitation (CPR) have been criticized for several reasons: (1) cardiac arrest times of 5 min or less are not reflective of the prehospital setting, (2) anesthetic agents may significantly influence autonomic control of regional blood flow, (3) canine cardiac anatomy and coronary blood supply are not reflective of humans and (4) precise validation data for blood flow measurements have not been reported. This study presents a methodology and model for measuring regional blood flow during CPR after a prolonged cardiac arrest. Fifteen swine weighing 15-25.

The effect of age on tooth movement and mineral density in the alveolar tissues of the rat.

A comparison of tooth movement cycles and changes in alveolar tissue mineral densities was made between young (21 to 28 days old) and adult (90 to 100 days old) rats. An initial 60-g mesial tipping force was applied to the maxillary first molars; tooth movement was estimated by measuring the opening between first and second molars, and tissue mineral density by sample ash weight per cubic centimeter. A characteristic three-part tooth movement cycle was found in both groups of rats.

A rapid and sensitive method for the identification and quantitation of sub-picomolar amounts of neurohypophysial peptides.

A simple, rapid and sensitive method, using isocratic reversed-phase HPLC, is described for the concomitant identification and quantitation of low levels of the various neurohypophysial peptides in biological tissues and fluids. The method requires little or no sample preparation and utilises UV peak detection at 215 nm with a serial signal amplification system to achieve a usable maximum sensitivity of less than 200 fmol of peptide.

Perfusion of the septum of the rabbit with vasopressin antiserum enhances endotoxin fever.

The septal region of the brains of conscious, adult, male New Zealand White rabbits were perfused by means of a push-pull system before and after an intravenous administration of bacterial pyrogen extracted from Salmonella abortus equi. Perfusion of the septal area with sucrose solution (260 mM) had no significant effect on the resulting fever (1.13 +/- 0.

Endophotocoagulation in vitrectomy with a carbon dioxide laser.

A continuous-wave carbon dioxide laser operating at a wavelength of 10.6 microns has been applied transvitreally by means of a miniature articulating arm and intraocular probe to produce chorioretinal lesions in albino white rabbit eyes. The advantages of using a carbon dioxide laser are its lack of pigment dependence, its ability to act both as a photocoagulator and as a phototransector, and its ability to deposit its energy in a well-defined area without adverse effect on neighboring ocular tissue.

Syneresis of vitreous by carbon dioxide laser radiation.

In carbon dioxide laser surgery of the vitreous a process of vaporization has been advocated. In this report syneresis, a thermal liquefaction of gel, is shown to be over ten times more efficient on an energy basis than vaporization. Syneresis of vitreous is experimentally shown to be a first-order kinetic process with an activation energy of 41 +/- 0.

Broadband infrared generation in liquid-bromine-core optical fibers.

A new Raman-gain medium suitable for use throughout the infrared spectral region is described. Hollow silica fibers with liquid-bromine cores are shown to have very large Raman-gain coefficients (gamma=1.7x10(-8)cm/W at 1.

The hypothalamo-neurohypophysial system of native Australian desert rodents. The catecholamine contents of the hypothalamus and posterior pituitary of Notomys alexis, Pseudomys australis and the laboratory rat.

The putative central catecholamine neurotransmitters, adrenaline, noradrenaline and dopamine, have been quantified by enzyme radiochemical methods in the hypothalamo-neurohypophysial system (HNS) of the xeric rodents, Notomys alexis and Pseudomys australis, using the laboratory rat for comparison. All three catecholamines were found (noradrenaline greater than dopamine greater than adrenaline) in the hypothalami of the three species. The hypothalami of the two xeric rodents contained some 5-10 times as much of each of the catecholamines (when expressed as ng per body weight) as the rat.

The hypothalamo-neurohypophysial system of native Australian desert rodents. The vasopressin and oxytocin contents of hypothalamus and posterior pituitary of Notomys alexis and Pseudomys australis compared with those of the laboratory rat and mouse in different states of water balance.

The neurohypophysial hormones vasopressin (the antidiuretic hormone) and oxytocin have been quantified in xerophilic and mesophilic rodents under normal and dehydrated conditions in order to study the relative contribution of these hormones to survival under drought conditions. The ability to cope adequately with water deprivation or saline ingestion was found to be closely related to the magnitude (relative to body size) of pre-existing hormone stores in the neural lobe and to the subsequent ability to enhance hypothalamic biosynthesis of vasopressin and oxytocin sufficiently to maintain those stores at near-normal levels despite a continuing high level of demand for vasopressin and, apparently, also oxytocin. The possible role(s) of the release of oxytocin in these conditions is discussed.

Infrared generation by means of multiple-order stimulated Raman scattering in CCl(4)- and CBrCl(3)-filled hollow silica fibers.

Near-infrared and midinfrared radiation has been generated by means of multiple-order stimulated Raman scattering in hollow-core silica fibers filled with CBrCl(3) and CCl(4) and pumped by Nd:YAG laser radiation. Radiation between 1.2 and 2.

Folate analogues altered in the C9-N10 bridge region. 18. Synthesis and antitumor evaluation of 11-oxahomoaminopterin and related compounds.

The chemical synthesis of 11-oxahomoaminopterin (1) has been carried out using procedures which were also found to be applicable to the synthesis of 11-oxahomofolic acid (2). Reaction of 1-bromo-4-[p-(caarbomethoxy)phenoxy]-2-butanone (10) with sodium azide gave 1-azido-4-[p-(carbomethoxy)phenoxy]-2-butanone (11). Protection of the carbonyl group of 11 as the ethylene ketal and subsequent base hydrolysis of the product gave 1-azido-4-(p-carboxyphenoxy)-2-butanone ketal (13).

The effect of dopamine on neurohypophysial hormone release in vivo and from the rat neural lobe and hypothalamus in vitro.

1. The rat hypothalamus (containing the supra-optic nuclei, paraventricular nuclei, median eminence and proximal pituitary stalk) has been incubated in vitro and shown to be capable of releasing the neurohypophysial hormones, oxytocin and arginine vasopressin, at a steady basal rate about one twentieth that of the rat neural lobe superfused in vitro. 2.

Variable metal mesh coupler for far infrared lasers.

In a far infrared molecular laser the traditional pierced output mirror has been replaced by an infrared interference filter, consisting of two metal mesh reflector grids. By adjusting the spacing between the two parallel grids, the reflectance of the filter can be varied. Theory and experiment of this variable reflector are presented.