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At least 397 records · Page 22Linked to original sources

PubMed2001

Using CCM for the Prediction of Sorption Curves under Varying Ionic Strength Conditions: Reply to Some Comments.

In response to the comments of J. Lützenkirchen (237, 297 (2001), J. Colloid Interface Science), it is pointed out that the criticized model is not intended to provide a complete description of the system studied (Cs on silica-magnetite). Rather, it is a simplification of a complex natural system. The accuracy of the obtained predictions requires further investigation. Copyright 2001 Academic Press.

Journal Article↗

PubMed1998

The Calibration Issue: Theoretical Comments on Suantak, Bolger, and Ferrell (1996).

In this comment on a recent article in this journal on calibration of subjective probabilities by Suantak, Bolger, and Ferrell (1996) we point to methodological problems with the data presented in the article, with computer simulations we demonstrate that the results claimed by the authors to refute the ecological models (Gigerenzer, Hoffrage, & Kleinbölting, 1991; Juslin, 1994) are actually predicted by them, and we respond to the criticisms of the notion of "ecological cue validity." It is further argued that contrary to the claims by the authors: The decision variable partition model advocated by the authors fails to account for the results reported in the article, but there is one error model-the combined error model (Juslin, Olsson, & Björkman, 1997)-that predicts the observed symmetric hard-easy effect with crossover at proportion correct .75. Finally, an analysis of 44 cognitive and 21 sensory tasks demonstrates that there is a difference in calibration for sensory and cognitive tasks. Copyright 1998 Academic Press.

Journal Article↗

PubMed1993

Migrant stock vs. lagged migrant flow as a determinant of migrant settlement. A comment on Anjomani and Hariri.

The author comments on a study by Ardeshir Anjomani and Vida Hariri "of United States interstate migration which explicitly incorporates so-called 'flow diversion' and 'flow creation' effects. Their discussion and evaluation of the model, however, are marred by several factors. This paper contrasts the roles of migrant stock and lagged migration in migration analysis and then addresses (a) the problems encountered when the 'family-friends' effect is proxied with measures of lagged migrant flows, (b) the problem of using a two-period lagged value of earlier migrant flow as an explanatory variable, and (c) this paper suggests an alternative method of correcting the Anjomani-Hariri model's problems with multicollinearity."

Americas↗

PubMed1975

[Cryptococcosis in Venezuela. Comments on a clinical case with unusual location].

A tumor like case of Cryptococcosis with a rare location in the abdomen of a young healthy woman is commented. It gave the opportunity to refer to the pathogeny of the disease, making in that way a brief review of the cases known in Venezuela and some not still published from which we got information. That review showed that generally doctors found more frequently organic lesions within the fields they are specially working for. It is obvious that mycosis must be considered in the diagnosis of nearly every patient in many countries and that laboratories must get appropriate equipment and personnel to help in that diagnosis.

Adolescent↗

PubMed1986

Some comments on the clinical use of evoked potentials.

In this survey we describe the uses of somatosensory, visual, and auditory evoked potentials (EPs), adding some critical comments on the values and pitfalls of these methods. It must be stressed that the application of EPs is most valuable when combined with a thorough neurological examination. There is general agreement that EP measurement is one of the best techniques for objective, noninvasive study of brain function in humans.

Brain↗

PubMed1991

Comments on Heller, Thompson, Trueba, Hogg, and Vlachos-Weber, "peer support telephone dyads for elderly women".

Comments on the support intervention study with elderly women by Heller et al. (1991). The study highlights the need to determine what aspects of social support are most effective for particular populations. I discuss what basic research on supportive functions suggests for this population, and what kinds of knowledge are needed to best translate epidemiologic findings into intervention research designs. Related research on the effects of family vs. peer support is discussed, and processes that may help or hinder family support are proposed. Finally, I note some implications for further research on social networks of elderly persons, and approaches to increasing social companionship and social integration.

Aged↗

PubMed1984

Comment on "An analysis of world records in three types of locomotion".

A recent paper in this journal has analysed world records in three types of locomotion, making extensive use of mathematical and statistical techniques. There are a number of methodological flaws in much of the authors' use of these techniques. Some of these are fundamental and others are less serious. This paper draws the attention of readers of this journal to these flaws, with comment and suggestions. This is done in the hope that researchers using mathematical and statistical techniques will be made more aware of limitations to their methodology.

Humans↗

PubMed1981

Haemopoietic recovery during radiation disease: comments on combined-injuries.

The regenerative ability of haemopoietic organs during combined radiation injuries has not been adequately investigated. Interactions among individual factors can critically influence the processes involved in haemopoietic recovery. An overview of radiation injuries is given, and a concept towards a hypothetical mode of action at the cellular level is presented. The influence which interacting factors can have on the concentration of pluripotential haemopoietic stem cells (HSC) is demonstrated by results from an initial experiment. The importance of synergistic and antagonistic reactions is emphasised and commented upon.

Animals↗

PubMed1979

[Comments on the paper by D. Tausch et al. Experiments on the penetration power of various bullets into skin and muscle tissue (author's transl)].

The objections in the following comments on a recent paper by Tausch et al. (1978) are raised principally to the points that the mass of the projectile is given an importance for the penetration which is not justified, and that the inherent uncertainty of the measurement data and the scope of validity of the empirical formulas are not sufficiently taken into account. The discussion on the process of penetration and a discontinuity of the depth of penetration as a function of the velocity of the bullet is of fundamental significance, with consequences for the definition of the critical velocity.

Humans↗

PubMed1998

Environmental Values and Popular Conflict over Environmental Management: A Comparative Analysis of Public Comments on the Clinton Forest Plan

/ Public participation in environmental management decisions has frequently led to conflict. This paper examines the role of environmental values in fueling these conflicts, based on a data base and sample content analysis of written public comments solicited in 1994 regarding the highly contentious Clinton Forest Plan (also known as Option 9) proposed for management of federal forests in the US Pacific Northwest. The analysis considered whether those respondents favoring more versus less environmental protection than was offered in Option 9 held entirely different values, identifying which antagonistic values appeared to be most fundamental and where (if at all) values consensus occurred. It also compared values emanating from respondents within and outside the affected region, although few major differences were detected in this regard. Results suggest that strong values differences did exist among those preferring greater versus less environmental protection, in particular as concerned the extent, form, and spatial and temporal scope of justification of their positions, their ideas of forests, and the appropriate role of people in forest management. Disagreement concerned far more than purely environmental values: a major point of difference involved human benefits and harms of the proposed forest plan. Indeed, both sides' positions were overridingly anthropocentric and consequentialist-a values orientation that almost inevitably spells conflict in light of the commonly differentiated social impacts of environmental management decisions. Although public involvement in environmental management thus cannot be expected to lead to a clear and consensual social directive, the Pacific Northwest case suggests that viable environmental management solutions that take this range of values into account can still be crafted.KEY WORDS: Environmental values; Public participation; Clinton Forest Plan; Pacific Northwest

Journal Article↗

PubMed1990

A comment on the localization of cyanine dye binding to brush-border membranes by the fluorescence quenching of n-(9-anthroyloxy) fatty acid probes.

This work comments on the location and orientation of 3,3'-dipropylthiodicarbocyanine (diS-C3-(5)) in renal brush-border membrane vesicles (RBBMV) (Cabrini, G. and Verkman, A.S. (1986) Biochim. Biophys. Acta 862, 285-293) evaluated from collisional quenching of n-(9-anthroyloxy)stearic acid (n-AS) fluorescence. At variance with these authors, it is concluded that the quenching is due to resonance energy transfer. It is also shown that the fluorescence data are not clear evidence for the reported monomer and dimer locations.

Benzothiazoles↗

PubMed1988

A comment on the evaluation of equilibrium constants for alpha-tocopherol interactions with fatty acids by absorbance in the ultraviolet region.

This paper comments on the evaluation of Erin and co-workers (Biochim. Biophys. Acta 774 (1984) 96-102) of equilibrium constants for alpha-tocopherol interactions with fatty acids on the basis of the changes of absorbance in a 200 nm ultraviolet region. It is concluded that the ultraviolet method is inadequate because it is affected by absorption in that region of the solvent, ethanol and fatty acids which they used.

Chemical Phenomena↗

PubMed1985

Further comments on the logic of the application of uncoupler- inhibitor titrations for the elucidation of the mechanisms of energy coupling.

Following the appearance of two papers in this journal commenting on the logic of the application of uncoupler-inhibitor titrations as a means of discriminating between 'delocalized' and 'localized' chemiosmotic mechanisms [(1984) FEBS Lett. 176,79-82; (1985) FEBS Lett. 186, 8-10], and in contrast with the arguments presented there and elsewhere, we show that in a linear model the increase in delta mu H which accompanies partial inhibition of the ATPases always leads to a relatively higher decrease of the rate of ATP synthesis by a given concentration of uncoupler in the presence of an ATPase inhibitor than in its absence. This is due to the fact that the same titre of uncoupler leads to a higher dissipative H+ flow in the presence of inhibitor, since the driving force delta mu H is higher.

Adenosine Triphosphatases↗

PubMed1987

A standardised comment scheme for routine pulmonary function test results.

Observed values of ventilatory capacity, gas transfer and lung volumes in 840 patients were used to formulate a standardised scheme of descriptive comments. Response to bronchodilators was also defined. Absolute differences between measured and predicted values are used to identify normal and abnormal patterns of results, together with an overall pattern. The algorithms are suitable for computer use. The scheme has been in routine manual use for four years and can be used by any laboratory in which the necessary quality control standards are applied.

Adult↗

PubMed1985

Polyglot aphasics and language mixing: a comment on Perecman (1984).

Perecman (1984) Brain and Language, 23, 43-63, proposes that language mixing (and especially utterance level mixing) in polyglot aphasics reflects a linguistic deficit and that spontaneous translation indicates a prelinguistic processing deficit. It is argued in this comment that both language mixing (including utterance-level mixing) and spontaneous translation are also found in normal polyglots, and that they may not therefore always be reflecting language deficit in aphasics. Only a good assessment of the patient's language and speech before and after the injury will determine if these behaviors do indeed reflect deficits.

Aphasia↗

PubMed1988

When is enough, enough? A comment on Grodzinsky and Marek's "Algorithmic and heuristic processes revisited".

In this comment I argue that although Y. Grodzinsky & A. Marek's (1983, Brain and Language, 33, 216-225) criticism of the conclusions reached by A. Caramazza and E. B. Zurif (1976, Brain and Language, 3, 572-582) in their paper on comprehension disorders in so-called agrammatic patients is not entirely without technical merit, its impact on the claims made by Caramazza and Zurif is inconsequential. I show that there are deeper theoretical and methodological reasons which undermine the claims made by Caramazza and Zurif and the only superficially different proposal of Grodzinsky and Marek.

Algorithms↗

PubMed2005

Candid candidate comments: the relationship between residency program selection factors and match list placements from ranked applicants.

OBJECTIVE: The purpose of this study was to explore the relationship between residency program selection factors and placements we received on candidates' match lists. STUDY DESIGN: An annual (2001-2004) telephone survey of applicants (n = 140) ranked for acceptance to the department's residency program addressed 16 program selection factors important in choosing our site. Candidates' comments about these program selection factors were recorded. Logistic regression was conducted with program selection factors as independent variables and program receipt of candidates' top quartile match list rankings as the dependent variable. RESULTS: The overall response rate was 68% (n = 95). Applicants' positive ratings on 3 program selection factors were related to our receipt of top quartile match list rankings: 1) our capacity to meet personal career goals (odds ratio [OR] 4.59); 2) positive faculty-resident relationships (OR 1.97); and 3) suitable location (OR 1.96). CONCLUSION: The single most important factor contributing to receipt of candidates' top quartile match list placements was positive perceptions of our program's abilities to meet their personal career goal needs.

Career Choice↗

PubMed2005

Avian influenza and the brain--comments on the occasion of resurrection of the Spanish flu virus.

Recent incidences of direct passage of highly pathogenic avian influenza A virus strains of the H5N1 and H7N7 subtypes from birds to man have become a major public concern. Although presence of virus in the human brain has not yet been reported in deceased patients, these avian influenza subtypes have the propensity to invade the brain along cranial nerves to target brainstem and diencephalic nuclei following intranasal instillation in mice and ferrets. The associations between influenza and psychiatric disturbances in past epidemics are here commented upon, and the potentials of influenza to cause nervous system dysfunction in experimental infections with a mouse-neuroadapted WSN/33 strain of the virus are reviewed. This virus strain is closely related to the Spanish flu virus, which is characterized as a uniquely high-virulence strain of the H1N1 subtype. The Spanish flu virus has recently been reconstructed in the laboratory and it passed once, most likely, directly from birds to humans to cause the severe 1918-1919 pandemic.

Animals↗