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Results 301 - 350 of 479
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Stoian M - - 1995
Pathological aspects in 100 cases of operated A.P. different in severity are not strictly related to aetiological conditions. Clinical observations have suggested some components of pathogenesis: obstruction of bilio-pancreatic inflow in duodenum at the beginning of the attack, bilio-pancreatic reflux on cholangiograms, strong secretory digestive stimulation before attack. Some experimental ...
Johnston D A - - 1994
A prospective record of all patients receiving home parenteral nutrition (HPN) in Tayside since 1980 has been used to audit the effect of experience and specific policy changes on HPN related complications. Total HPN related complications fell significantly over the years from 1.59 complications per treatment year during the initial ...
Miyake Y - - 1994
The relationship between intracellular period modulation and external environment change was investigated from the viewpoint of internal information coding in Physarum plasmodium. For the external conditions, concentration changes of attractant (galactose) and repellent (KCl) were used, and the internal responses were measured as the thickness oscillation of the plasmodium. (i) ...
Poller L - - 1994
Long-term stability studies on the WHO second primary International Reference Preparation (IRP) for thromboplastin (human plain BCT/253) stored at -20 degrees C have been conducted for ten years. Three centres took part in the exercise using frozen normal and coumarinised plasma samples which were tested throughout. There has been no ...
Guirao X - - 1994
ECW, and particularly its interstitial component, expands easily with malnutrition, sepsis, and trauma and after aggressive intravenous fluid therapy. In this scenario, hypoalbuminemia is usually the result of both an increased capillary escape rate due to leaky endothelium and increased distribution volume; this can be worsened by artificial intravenous nutrition ...
Li T C - - 1994
Although the histology and ultrastructure of the human endometrium are well documented, it is clear that morphometry can reveal subtle changes in cellular biology, especially when combined with suitable sampling and dating of the specimen. These changes reflect functional events, such as protein secretion, which may be studied using the ...
Morton C P - - 1994
We used a linearized magnetometer to measure the changes in rib cage and abdominal dimensions which occurred during induction of anaesthesia with i.v. methohexitone when spinal movement was prevented. By plotting the changes on an adaptation of the Konno and Mead plot, we inferred changes in chest wall volume, which ...
Picotte C J - - 1994
Rayleigh matches for foveal, temporally alternating fields showed only a small increase in the log green/red matching ratio (0.03--average of 10 observers) as the field was decreased from 116 to 19 min arc. This is consistent with only a small, 10%, change in photopigment density or lengthening of the cone ...
Hegstad A C - - 1994
The present study focuses on the sequential development of myocardial ultrastructural changes produced by oxygen radicals. Isolated rat hearts were perfused with oxygen radicals, generated by hypoxanthine and xanthine oxidase, for 5 and 10 min followed by a 35-min recovery period. The frequency of, and the association between, ultrastructural changes ...
Traxler K W - - 1994
In an effort to determine the functionality of palmitoylation in rhodopsin, a number of physicochemical properties of depalmitoylated rhodopsin were monitored. Approximately 70% of the rhodopsin was depalmitoylated in rod outer segments by a mild hydroxylamine treatment that resulted in minimal bleaching of rhodopsin. Subsequent purification by affinity chromatography could ...
Bittles A H - - 1994
During the Irish famine of 1846-1851 there were an estimated 1.0 million excess deaths, the migration of 1.3 million persons, and 300,000 averted births. To assess the influence of population changes at the local level in Ulster, decennial census records were analyzed for the Barony of Upper Ards, County Down, ...
Murofushi T - - 1994
We investigated the postcaloric nystagmus related to positional change. Twenty-two healthy subjects were examined (experiment 1). A caloric test was carried out in the supine position. Following the cessation of the primary phase, the subject was reoriented to the upright position. An additional 10 subjects were also examined with other ...
Pálfalvi M - - 1993
The tear substitute Lacrozym has been compared with Tears Naturale in a double-blind study. Baseline tear film break-up time, efficiency by determining the maximum of the break-up time values after tear substitute administration, and retention time has been established. A similar increase of break-up time values were found after 10, ...
Mogdans J - - 1993
Monaural occlusion during early life causes adaptive changes in the tuning of units in the owl's optic tectum to interaural level differences (ILD) that tend to align the auditory with the visual map of space. We investigated whether these changes could be due to experience-dependent plasticity occurring in the auditory ...
Koukounas E - - 1993
Sixteen men were tested under conditions where they viewed the same segment of erotic film on many occasions or engaged repeatedly in the same erotic fantasy. Decrements in penile tumescence and subjective sexual arousal over trials were accompanied by reports from Ss that they felt less absorbed in the events ...
Sinning W E - - 1993
Changes in electrical resistance (delta R), water (delta H2O), and blood variables (Na+, K+, Cl-, protein [Pr], osmolality [Osmo], hemoglobin [Hb], and hematocrit [Hct]) were monitored during hemodialysis in 20 subjects. Average delta H2O was 1.69 +/- 0.91 liters. Blood, R, and circumferences (C) were measured for the upper limb ...
Levitan I - - 1993
In Limulus ventral photoreceptor cells the time-course of the desensitization of InsP3 response was measured by an injection-pair paradigm. Pressure pulses of InsP3 were delivered into the cell with various interpulse intervals. The desensitization of the response to the second injection of each pair approached totality at 200 ms, which ...
Lassus P - - 1993
Farmed mussels were artificially contaminated with a pure culture of an Alexandrium tamarense toxic strain (MOG 835), to assess the effect of initial toxicity on paralytic toxin change during the depuration process. As previously observed in mussel, gonyautoxin GTX2 is eliminated more slowly than other gonyautoxins. A toxic level (1300 ...
Clark S A - - 1993
The purpose of this study is to evaluate the effect of one abrasive cleaner, one non-abrasive cleaner and one non-abrasive alcohol-based cleaner on the lens parameter stability of the NOVALENS. Twenty-four lenses, all NOVALENS material of identical design, were cleaned 100 times each. Eight lenses were cleaned with MiraFlow (CIBA ...
Zachos J C - - 1993
Detailed investigations of high latitude sequences recently collected by the Ocean Drilling Program (ODP) indicate that periods of rapid climate change often culminated in brief transient climates, with more extreme conditions than subsequent long term climates. Two examples of such events have been identified in the Paleogene; the first in ...
Bullock R - - 1993
The laser absorption spectrophotometric technique was used to continuously monitor jugular bulb oxygen saturation (SjO2), and thus to calculate arteriovenous oxygen differences (AVDO2), in three subgroups of intensively monitored, severely head injured patients. We have used this data to address two questions: 1. How do cerebral and systemic haemodynamic changes ...
Flügel C - - 1993
Postnatal development of the neuro- and viscerocranium with special reference to the maxillodental structures was studied morphometrically by analyzing computer tomograms and radiograms of human and monkey heads of different age groups. The following parameters were used: the prognathic angle, the clivus angle, the palate-incisivus angle, the interincisival angle and ...
Zubovińá I - - 1993
The frequency of thyrotoxicosis in peace and war time periods was compared in the same region with the same population. In one year peace and war time periods 54 and 87 cases of thyrotoxicosis were found, respectively, which indicates the increase for 62%. The results point to the conclusion that ...
Smith A B - - 1992
The comparatively good fossil record of post-Palaeozoic echinoids allows rates of morphological change to be estimated over the past 260 million years and compared with rates of molecular evolution. Parsimony analysis of morphological data, based predominantly on skeletal characteristics, and parsimony, distance and maximum likelihood analyses of molecular data, from ...
Bibby J M - - 1992
The rate of change of pH caused by the hydrolysis of urea was measured for urease solutions of 18 different concentrations. Concentrations were converted into an activity, A (measured in IU/cm3), by using a titrimetric method to assay the urease sample. For activities in the range 0.6-38 IU/cm3, A was ...
Wöltgens J H - - 1992
In earlier clinical studies of a group of children subjected to an intense fluoride treatment programme several salivary properties were related to cariogenic changes in the enamel surface, as assessed by mirror and probe. In this study the relationship between salivary parameters and cariogenic changes was investigated on bitewings taken ...
Orosco M - - 1992
The activity of hypothalamic monoamines in response spontaneous feeding was investigated using the in vivo technique of brain microdialysis together with the instrumental recording of feeding pattern. The simultaneous variations of dopamine (DA), serotonin (5-HT), and their respective metabolites, DOPAC and 5-HIAA, were measured in the rostromedian hypothalamus, where the ...
Poucell S - - 1992
Experience with young animals, animals administered certain hepatotoxins and animals with two-thirds hepatectomy suggests that tight junctional permeability is increased in states characterized by architectural remodeling in the liver. In this work we correlate changes in tight junctional morphometry induced by two-thirds hepatectomy with changes in biliary permeability assessed by ...
Schulte G T - - 1992
The introduction of the variable-pitch feature on pulse oximeters in 1983 by the Nellcor Corporation (Hayward, CA) allowed users to rapidly detect changes in oxygen saturation by listening for changes in the pitch of the tones emitted by the pulse oximeter. A few individuals have reported that they have been ...
Taylor D J - - 1992
Changes in biogenic amine levels associated with the morphological and behavioural development of the worker honeybee are examined. A significant increase in amine levels in the head of the honeybee is associated with transition from the larval to pupal stage. Adult emergence is also accompanied by a significant increase in ...
Hollands J G - - 1992
Subjects judged change and proportion when viewing graphs in two experiments. Change was judged more quickly and accurately with line and bar graphs than with pie charts or tiered bar graphs, and this difference was larger when the rate of change was smaller. Without a graduated scale, proportion was judged ...
Lewin G R - - 1992
We have previously demonstrated that administration of antisera against NGF (anti-NGF) can have profound effects on developing primary afferents (Ritter et al., 1991). Chronic administration of anti-NGF to rats beginning on the day of birth results in a severe depletion of cutaneous A delta high-threshold mechanoreceptors (HTMRs) from the sural ...
Debeljuk L - - 1992
The changes in substance P concentrations in the hypothalamus of female golden hamsters were studied at the different stages of the estrous cycle. Substance P levels in the hypothalamus of hamsters were highest during estrus and lowest during diestrus I and proestrus. The concentrations of substance P during diestrus II ...
Esen A - - 1992
Arterial and venous systems are the main points for the evaluation of vasculogenic impotence. To evaluate both of these systems in the same study we propose a dual radioisotopic study in which 99mtechnetium (99mTc) and 133xenon (133Xe) were used. The changes in 99mTc and 133Xe radioactivities administered intravenously and intracavernously, ...
Rabito S F - - 1992
Carboxypeptidase N (CPN) is an inactivator of anaphylatoxins and kinins, peptides implicated in the pathogenesis of complications in extracorporeal circulation. To investigate whether the level of CPN is altered during cardiopulmonary bypass (CPB) we studied 15 patients undergoing cardiac surgery utilizing CPB. The concentration of CPN decreased to about 48% ...
Kennedy R E - - 1992
Facial asymmetry and cosmetic deformity can occur following enucleation. The effect of enucleation on the growth of the orbit can be demonstrated in the rabbit and cat by early enucleation, X-ray study and dry skull measurements. In 42 human patients the anophthalmic orbital changes are determined by roentgenograms. The influencing ...
Mizes J S - - 1991
The concept of changes in emotional arousal during the binge-purge cycle plays a principal role in bulimia theory. Female bulimic patients (n = 29) retrospectively rated the intensity of several emotions during their binge-purge cycle. When collapsed into positive versus negative emotion categories, both categories showed significant changes in emotions ...
Lands L C - - 1991
Dual-photon absorptiometry (DPA) has recently been applied to the assessment of body composition. To evaluate the accuracy of DPA in detecting small changes in the lean soft tissue mass, we performed DPA with the use of the Norland 2600 Dichromatic densitometer on six healthy adult males before and after a ...
Skroeder R - - 1991
The authors varied urea clearance (K), dialysis time (T), and ultrafiltration (UF) in 294 hemodialyses on 23 patients and studied changes in urea space (V), determined by total dialysate urea removal. As K increased and UF and T decreased, V also decreased. K, T, and V, thus, covariate and dialysis ...
Ishigaki H - - 1991
Exercise was found to dilate the pupil area while the exercise took place, while the area showed constriction following the exercise period. Exercise-induced change in the size of the pupil was minimal. Pupillary dilation was greatest under conditions of maximal exercise. In exercise under a consistent load, pupillary dilation increased ...
McDonald T F - - 1991
The morphologic changes in ciliary processes and the associated intraocular pressure (IOP) were observed in owl and squirrel monkeys after intravitreal (IVT) and intravenous (IV) injections of water soluble marijuana-derived material (MDM). The response in monkeys differed from that reported in rabbits wherein IV injection induced severe ciliary swelling and ...
Torbergsen T - - 1991
Myopathy represents one of the major features of Marinesco-Sjögren syndrome (MSS). Seven patients with MSS from three different families were studied with morphological and neurophysiological methods. In two patients ragged-red fibres were found after Gomori trichrome staining. Transmission electron microscopy (EM) showed that subsarcolemmal accumulation of abnormal mitochondria regularly occurred ...
Robaglia A - - 1991
Nucleolar changes and their time-course following axotomy and decentralization were investigated using an ultrastructural and stereological analysis of sympathetic neurons in superior cervical ganglion. By comparison with ganglia fixed immediately after removal, incubation for 2 h, 3 h and 5 h in NCTC 109 medium at 37 degrees C was ...
Kreitman N B - - 1991
Two cohorts of suicide (and undetermined deaths) in Scotland for the quinquennia 1974-78, 1979-83 were investigated. A national record linkage exercise was carried out relating the deaths to admissions for alcoholism in the preceding 5 years (minimum) to 10 years (maximum). No differences were found between the cohorts in socio-demographic ...
Full R J - - 1991
1. Specific resistance to locomotion will remain constant if changes in the amount of force produced or in the cost of force production are directly proportional to changes in gravitational acceleration. 2. If changes in gravitational acceleration result in a disproportionate decrease of the effective mechanical advantage of limbs or ...
Uchiyama S - - 1991
This study provides additional radiographic information concerning the long-term effect of ulnar impingement. Films of 198 wrists of 102 patients with vibration disease observed over ten or more years were reviewed. All the wrists showed ulnar plus variance of more than 0 mm except seven. Degenerative changes were found in ...
Evans L - - 1990
The vast literature on alcohol's effect on traffic safety does not contain even a moderately satisfactory answer to one of the most basic questions, namely "What is the fraction of all traffic fatalities attributable to alcohol use?" A published estimate of 23.7% based on an erroneous calculation has been widely ...
Persson K - - 1990
The inflammatory reactions in the teat and udder of the dry cow were studied by total and differential somatic cell counts (SCC) and by measuring bovine serum albumin, N-acetyl-beta-D-glucosaminidase (NAGase), plasminogen and plasmin. The teat and udder cisterns were surgically separated from each other in two udder quarters of each ...
Kolev O - - 1990
Stimulation of the vestibular system by cold irritation of the ear was performed in 12 patients during a migraine attack. In eleven of the subjects the headache was changed. The changes varied from completely disappeared to a slight decrease. The duration of the changes was either several minutes, during the ...
Gómez-Amor J - - 1990
Electrodermal activity (EDA) changes in menstrual cycle were studied in two experiments. In both experiments subjects were presented with 16 80-dB tones; 15 tones were 4 s, 1000 Hz, and the last one - change trial - was a 6-s, 3000-Hz tone. In Expt. 1, a within-subjects design was employed, ...
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