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Results 251 - 300 of 486
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Medhurst J L - - 2001
The crown structure of Eucalyptus nitens (Deane & Maiden) Maiden 6 years after thinning, and the development of stand leaf area index both immediately and 6 years after thinning, were investigated. Thinning did not alter branch angle, branching density or the relationship between branch size and branch leaf area. However, ...
Foss R D - - 2001
This study was conducted to determine whether the lowered BAC limit for drivers in North Carolina resulted in fewer alcohol-related motor vehicle crashes. We used time-series analysis to examine several indicators of alcohol involvement in both injury and fatal crashes between 1991 and 1996. Data from NC crash files as ...
Wiener E - - 2001
Transverse relaxation rates R2(*) were measured in subjects performing a motor task using a segmented EPI double gradient echo sequence (TE = 23/70 ms) with five different voxel sizes between 1.8 mm(3) and 41.7 mm(3). An analysis of the errors involved in the calculation of the change of the transverse ...
Cramer D - - 2001
In this cross-sectional study of 92 romantic relationships, both the S. S. Hendrick (1988) Relationship Assessment Scale and a 16-item negative conflict scale were independently associated with the consensus items of the Short Marital Adjustment Test (H. J. Locke & K. M. Wallace, 1959), but not with change from initial ...
Sebastião M P - - 2001
Transthyretin (TTR) amyloidosis is a conformational disturbance, which, like other amyloidoses, represents a life threat. Here, we report a TTR variant, TTR Thr119Met, that has been shown to have a protective role in the development of clinical symptoms in carriers of TTR Val30Met, one of the most frequent variants among ...
AltintaƟ K H - - 2001
The aim of this study was to determine various times related to the ambulance activities of Ankara Emergency Aid and Rescue Services (EARS) and if necessary contribute to the improvement of them. A descriptive study was planned to determine various times related to the ambulance activities of Ankara EARS. The ...
Hamir A N - - 2001
Scrapie is a naturally occurring transmissible encephalopathy of sheep and goats. Currently available methods for diagnosis are the presence of characteristic histopathologic changes and detection of an abnormal form of prion protein (PrPres) in the brains of affected animals. This study documents preclinical and subclinical scrapie in a flock of ...
Besser D - - 2000
The cyclization kinetics of five backbone-cyclic tetrapeptides was investigated both experimentally and computationally. The aim was to both accurately measure the cyclization rates in solution and develop a method that efficiently estimates the relative cyclization tendencies computationally. Progression of the cyclization reaction was monitored directly, yielding the kinetics of changes ...
Estrada B - - 2000
Pepper fruits, of Capsicum annuum cv. Padron, undergo changes in content of capsaicinoids, lignin, and free phenolics during the maturation process. Although capsaicinoids increase with development, the maximal levels of free phenolics and lignin are observed during the early stages of development. A decrease of peroxidase activity was observed during ...
Salt A N - - 2000
The endolymphatic sac (ES) is believed to be the locus for endolymph volume regulation in the inner ear. It has recently been shown that induced endolymph volume changes in the cochlea result in anatomical changes in the ES, suggesting that function of the sac varies according to endolymph volume status. ...
Zelditch M L - - 2000
Heterochrony, evolutionary changes in rate or timing of development producing parallelism between ontogeny and phylogeny, is viewed as the most common type of evolutionary change in development. Alternative hypotheses such as heterotopy, evolutionary change in the spatial patterning of development, are rarely entertained. We examine the evidence for heterochrony and ...
Ackers D - - 2000
The spatial pattern of acropetal and basipetal cytoplasmic streaming velocities has been studied by laser-Doppler-velocimetry (LDV) in the positively gravitropic (downward growing) rhizoids of Chara globularis Thuill. and for the first time in the negatively gravitropic (upward growing) protonemata. The LDV method proved to be precise and yielded reproducible results ...
Yajima Y - - 2000
In order to study the pharmacological action of the NO donor SIN-1 upon laryngeal motoneurons, we focally iontophoresed SIN-1 onto single motoneurons identified by antidromic stimulation of the recurrent nerve. SIN-1 produced opposing effects on motoneuron activities. Of 34 identified motoneurons, 38.2% showed a statistically significant decrease (decreasing group), while ...
Hauser R A - - 2000
In clinical trials for patients with Parkinson's disease (PD) with motor fluctuations, efficacy is generally ascribed to an intervention if motor function is significantly improved or if "off" time is significantly reduced. However, we have argued that patients might not be improved if off time is reduced only to the ...
Phlippen M K - - 2000
On the basis of detailed analyses of morphological characteristics and behavioural events associated with ecdysis in a crab (Carcinus maenas) and a crayfish (Orconectes limosus), a comprehensive substaging system has been introduced for the ecdysis stage of the moult cycle of these decapod crustaceans. In a remarkably similar stereotyped ecdysis ...
Ghoshal U C - - 2000
Endoscopic sclerotherapy (EST) leads to structural and motility changes in the esophagus; the former are thought to be commoner after EST with absolute alcohol (AA), which is a commonly used sclerosant in India as it is cheap and effective. There are no previous studies on changes in esophageal motility after ...
Piquette C A - - 2000
One of the difficulties in assessing mucoactive therapy is selecting clinical outcome variables that reflect the impact of clearing airway secretions on quality of life (QOL). Petty and colleagues developed a questionnaire designed to evaluate the clinical impact of mucoactive therapy in patients with chronic bronchitis (CB). We evaluated this ...
Akubor P I - - 2000
Plantain chips were produced from unripe plantain fruits. The chips were packed in polyethylene bags and stored at 30 +/- 2 degrees C for 1, 2 and 3 months, respectively. The storage stability of the chips was evaluated by analyzing periodically for changes in the physicochemical, microbiological and sensory characteristics. ...
González-Luque J C - - 2000
This paper identifies the variables associated with alcohol-related fatal traffic crashes (AFTC) in Spain. In addition, and for the first time in this country, these variables are used to describe the trend in AFTC, and to study the relationship between AFTC and alcohol consumption over the period 1976-1993. To this ...
Rosés N - - 1999
This study examines the direct and indirect effects of atrazine on two grazer species--Physa acuta and Ancylus fluviatilis--as assessed by changes in mortality rates, biomass, searching behaviour and histological properties. No direct effects were observed in the acute toxicity test (48 h) with 0.02, 0.2, 2, 10 and 20 mg ...
Grosskreutz J - - 1999
1. The present study was undertaken to determine whether mechanisms other than membrane depolarization contribute to the changes in excitability of cutaneous afferents of the median nerve under ischaemic conditions. 2. In six healthy subjects, axonal excitability was measured as the reciprocal of the threshold for a compound sensory action ...
Pike-Tay A - - 1999
With debate escalating in regard to the prolonged contemporaneity of neandertal and modern human groups in the Franco-Cantabrian region on the one hand, and the late persistence of neandertals (until ca. 28-30,000 B.P.) and Mousterian industries in southern Iberia on the other; sites with Mousterian-Upper Paleolithic sequences from northern Spain ...
Hori H - - 1999
A clearance model of inhaled man-made fibers (MMFs) was developed, and the calculated fiber numbers and dimensions were compared with the experimental ones using a glass fiber (GF), ceramic fiber (RF1) and two potassium octatitanate whiskers (PT1, TW). If the translocation rate by macrophages is constant and the effect of ...
Gotshall R W - - 1999
BACKGROUND: Both echocardiographic and impedance cardiographic techniques have been used individually for the determination of stroke volume (SV) during lower body negative pressure (LBNP). Impedance cardiography has not been validated during LBNP. HYPOTHESIS: The purpose of this study was to determine both the absolute values for SV and the change ...
Krivitski N M - - 1998
BACKGROUND: Fiber bundle volume (FBV), the space within the blood compartment of hollow fiber dialyzers, may decrease during treatment due to clotting. The clots may be flushed out of the dialyzer prior to measurements of FBV by dialyzer reprocessing equipment and a significant drop in FBV during the session may ...
Mintzer J - - 1998
BACKGROUND: Changes in serotonin (5-HT) have been described in both Alzheimer's disease (AD) and aggressive/agitated behaviors. This paper explores a possible association between 5-HT deficits and agitation in AD, using prolactin response to d,1-fenfluramine administration as a probe for 5-HT activity. METHODS: Five AD patients with agitation and 5 without ...
Germon T J - - 1998
OBJECTIVE: To examine the effect of two emitter-detector separations (2.7 and 5.5 cm) on the detection of changes in cerebral and extra-cerebral tissue oxygenation using near infrared spectroscopy (NIRS). METHODS: Two NIR detectors were placed on the scalp 2.7 and 5.5 cm from a single NIR emitter. Changes in deoxyhaemoglobin ...
Fischer K - - 1998
During gravitropic and phototropic curvature of the maize coleoptile, the cortical microtubules (MTs) adjacent to the outer epidermal cell wall assume opposite orientations at the two sides of the organ. Starting from a uniformly random pattern during straight growth in darkness, the MTs reorientate perpendicularly to the organ axis at ...
Peli E - - 1998
Concerns about potentially harmful effects on the visual system due to the use of head mounted displays (HMDs) in general, and stereoscopic systems in particular, have been raised in the literature. Most of the concerns were based on studies measuring visual function changes following short-term use of HMDs. This study ...
Carlisle-Nowak M S - - 1998
Two captive Australian pythons, one carpet and one diamond python, presented with signs of central nervous system dysfunction. The carpet python was agitated. Its head was tilting and it was incoordinated and had convulsions. It was treated with antibiotics and anthelmintics but was eventually euthanased after failing to respond to ...
Losert W - - 1998
The evolution of the crystal-melt interface was investigated during directional solidification of a dilute binary alloy, starting at the marginal stability time t(i) at which the planar interface first becomes unstable. The time delay between t(i) and the crossover time t(0) at which the interface modulation becomes observable was determined ...
Morre T D - - 1998
This study describes the peroperative endoscopic findings about the size, shape and mucosal changes of the middle turbinate in patients with chronic sinusitis who underwent total spheno-ethmoidectomy. Results confirmed the middle turbinate to be a useful landmark in performing extensive sinus surgery. The most frequent change due to chronic inflammation ...
Johansen L B - - 1998
During water immersion in humans, the use of changes in hematocrit (Hct) and hemoglobin concentration (Hb) underestimates the relative changes in plasma volume (PV) as measured directly with Evans blue (EB). It is not known whether the same is the case during posture changes. Therefore, changes in PV were determined ...
Lee J A - - 1997
Estimates derived from linear models fitted to melanoma death rates at successive time periods for the contiguous states of the US suggest that, allowing for latitude, rates are higher in the coastal than in the interior states. The effect of latitude on melanoma death rates in the white population of ...
Smith G T - - 1997
Bird song is controlled by a discrete network of brain nuclei. The size of several song control nuclei changes seasonally in many seasonally breeding songbird species. Reports of seasonal changes in the size of song nuclei have relied primarily on Nissl stains to define the borders of these regions. Recent ...
Tokaji Z - - 1997
Previous photoselection measurements showed that if the excitation is weak no optical anisotropy changes appear in immobilized purple membranes during the photocycle. The present study demonstrates that surprisingly at stronger excitations the anisotropy changes versus time. At 412 nm the dichroic ratio decreases after a few milliseconds, while at 570 ...
Kollias N - - 1997
BACKGROUND: Treatment-related changes in hyperpigmentation are difficult to quantify with visible light photography, especially when the changes are subtle. OBJECTIVE: Our purpose was to determine the utility and reliability of fluorescence photography to measure changes in mottled and diffuse hyperpigmentation. METHODS: Thirty-two subjects, with mildly to moderately photodamaged skin, completed ...
Nakahari T - - 1997
Osmotic stress was applied to the perfused rat submandibular gland during steady-state fluid secretion. Alterations of perfusate osmolarity, by addition or withdrawal of sucrose or NaCl, caused transient changes in secretory rate during continuous stimulation with 1 microM acetylcholine (ACh). Hyposmotic perfusates transiently increased, and hyperosmotic perfusates transiently reduced, the ...
Hilfrank B C BC Department of Orthopedics & Rehabilitation, Medical College of University of Vermont, Burlington, Vermont, USA Vermont Hand Therapy, P.C., 43 Timber Lane, South Burlington, Vermont 05403, - - 1997
The purpose of this report is to describe the management of a patient with a Class I ring avulsion injury. There were no bony or skeletal injuries and both neurovascular bundles were intact, but soft tissue swelling and decreased range of motion contributed to complex management problems. Predictable patterns of ...
Moreno M - - 1996
The kinetic parameters of alpha-methyl-D-glucoside (alpha Glc1Me) have been determined in the small intestine in order to establish developmental and regional changes in the apical transport in embryos and newly hatched chicks. Results show that the apparent Michaelis constant (Km) values did not change during the period studied in each ...
Jeska S - - 1996
At no time in history has the pace of organizational change been so great. And while ample attention has been placed on the need for change, significantly less attention has been placed on the human side of these changes. Across the country, organizations are now recognizing the need for new ...
Psarropoulou C - - 1996
4-Aminopyridine (4-AP, 50 microM), perfused in rat hippocampal slices from postnatal days 2-30 (P2-P30), induced in the CA3 area the appearance of spontaneous epileptiform discharges, short (interictal-like) and sustained (ictal-like), as well as slow potential. The duration of epileptiform discharges decreased and their rate of occurrence (frequency) increased with maturation: ...
Nybom P - - 1996
Wortmannin, a selective inhibitor of phosphatidylinositol 3-kinase (P13K), was found to give a dose and time-dependent, bimodal effect-initial increase, followed by decrease on the tight junction integrity of MDCK-1 monolayers, as assessed by electrical resistance measurement of the epithelia. Moreover, dihydrocytochalasin B inhibited the wortmannin-induced alteration, whereas cytochalasin B had ...
Burnley I - - 1996
"The study seeks first to ascertain whether the age profile of net migration [in coastal New South Wales, Australia] varied during the period 1976-91.... The second aim is to determine whether or not the impact of net migration on population growth remained constant throughout the period 1976-91. Thirdly, the study ...
Helliwell J F - - 1996
"Have regional disparities in Canada changed over the past thirty years? This paper assesses the robustness of earlier findings of convergence in the levels and growth rates of provincial per capita GDP, and then estimates the extent to which interprovincial and international migration is being influenced by regional differences in ...
Mullins D R - - 1996
"Broad-scale demographic changes have implications for state and local finance in terms of the composition of the base of revenue sources and their yields. This article examines the effect of such changes on the potential future yield of consumption-based taxes. The effect of household characteristics and composition on the consumption ...
Koff E - - 1996
PURPOSE: Longitudinal examination of early adolescent girls' premenarcheal expectations and postmenarcheal experiences of positive and negative menstrual related changes. METHOD: Ratings of 14 positive and negative changes were made by 80 girls on three occasions: (1) in grade 6 when girls were premenarcheal, (2) at the test occasion within six ...
Gfesser M - - 1996
BACKGROUND AND OBJECTIVE: The improvement of acne in summertime or the aggravation of acne in winter is a traditional dermatologic opinion. Ultraviolet rays are thought to be beneficial in the treatment of acne. In the existing literature there is no proof of this. The purpose of this study was to ...
Dankelman J - - 1996
The dynamic oxygen content differences were analyzed in the present study. The left main coronary artery of the anesthetized, open-chest goat was perfused at constant pressure (Pp). Pp(t), arterial flow [Qa(t)], and the arteriovenous oxygen content difference [a-vO2(t)] were averaged per beat. The a-vO2 signal was corrected for mixing processes ...
Brooks I - - 1996
Examines the potential for reducing the dysfunctional consequences of demarcation between work groups and professions in the NHS. Suggests that change may be achieved by interpreting and manipulating rituals which preserve the negative aspects of professional and work group autonomy. Discusses a number of rituals observed in a case study ...
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