Reaction Kinetics Involving O and N Compounds

1974 ◽  
Vol 52 (8) ◽  
pp. 1397-1404 ◽  
Author(s):  
H. Niki
Keyword(s):  
Reaction Kinetics ◽  
Experimental Work ◽  
Electronic States ◽  
The Past ◽  
N Compounds

Experimental work performed during the past 4 years is reviewed briefly for aeronomically interesting reactions involving ground electronic states of O and N compounds.

Sensory Deprivation and Schizophrenia

1959 ◽  
Vol 105 (438) ◽  
pp. 235-237 ◽  
Author(s):  
A. Harris
Keyword(s):  
Experimental Work ◽  
Human Subjects ◽  
Sensory Deprivation ◽  
Sensory Stimulation ◽  
The Past ◽  
Therapeutic Procedures

Much interest has been displayed in the past few years in the effect on human subjects of reduction, or as far as possible, abolition of sensory stimulation, so that virtual isolation from the environment is produced. Recent comprehensive reviews have appeared, dealing with experimental work (Solomon et al. 1957) and conditions arising incidentally in the course of various therapeutic procedures (Grünthal 1957), and it is therefore unnecessary to deal with the topic at length here.

scholarly journals Modelling reaction kinetics inside cells

2008 ◽  
Vol 45 ◽  
pp. 41-56 ◽  
Author(s):  
Ramon Grima ◽  
Santiago Schnell
Keyword(s):  
Molecular Biology ◽  
Reaction Kinetics ◽  
Single Molecule ◽  
Predictive Accuracy ◽  
Reaction Pathway ◽  
Imaging Techniques ◽  
Deterministic Models ◽  
Non Invasive ◽  
The Past ◽  
Fundamental Length

In the past decade, advances in molecular biology such as the development of non-invasive single molecule imaging techniques have given us a window into the intricate biochemical activities that occur inside cells. In this chapter we review four distinct theoretical and simulation frameworks: (i) non-spatial and deterministic, (ii) spatial and deterministic, (iii) non-spatial and stochastic and (iv) spatial and stochastic. Each framework can be suited to modelling and interpreting intracellular reaction kinetics. By estimating the fundamental length scales, one can roughly determine which models are best suited for the particular reaction pathway under study. We discuss differences in prediction between the four modelling methodologies. In particular we show that taking into account noise and space does not simply add quantitative predictive accuracy but may also lead to qualitatively different physiological predictions, unaccounted for by classical deterministic models.

(Pseudo-)Anglicisms as Nominal Compounds in Italian

2020 ◽  
pp. 86-110
Author(s):  
Silvia Cacchiani
Keyword(s):  
Second Generation ◽  
Word Formation ◽  
Cognitive Perspective ◽  
Reinforcing Effect ◽  
The Past ◽  
The Press ◽  
Nominal Compounds ◽  
N Compounds

The frequency of (pseudo-)Anglicisms in Italian has steadily increased in the past decades. In Italian, N+N compounds are rare and generally left-headed. Taking a broadly functional-cognitive perspective on the outcomes of contact with English right-headed word formation, the analysis discusses Italian classifying and identifying compounds primarily mediated through the press or coined for use as names and trademarks. The data suggest that English foreign compounding only ever has a reinforcing effect on word formation patterns that are already available to Italian. For example, favouring the spread from learned to non-learned word formation in second-generation neoclassical compounds. Additionally, while the pressure to adapt borrowed compounds from English leads to reductions to simplexes or loan translations, other compounds retain the English order of components. Thus we also find right-headed hybrid analogues and constructs with cognate bases that are formed in Italian by analogy with Anglicisms.

Low Drag Aerofoils

1947 ◽  
Vol 51 (433) ◽  
pp. 54-64
Author(s):  
L. G. Whitehead
Keyword(s):  
Mach Number ◽  
Surface Finish ◽  
Experimental Work ◽  
Theoretical Basis ◽  
High Standard ◽  
Critical Value ◽  
Aircraft Wing ◽  
Critical Mach Number ◽  
The Past ◽  
Design And Manufacture

During the past few years a new series of low drag aerofoils has been developed which represents a radical departure from earlier practice. The changes envisaged are much greater than those which accompanied the general change-over from the biplane to the monoplane, and give rise to many problems whose solution requires considerable theoretical and experimental work. An important feature of the new sections is the precision in design and manufacture which is essential for their success. This has given renewed interest to the investigation of many of the detailed problems of air flow and calls for parallel improvements in manufacturing technique so as to achieve the high standard of surface finish required.The purpose of this paper is to give a brief account of the theoretical basis of the design and application of the modified profiles as aircraft wing sections. It deals with the design of aerofoils for the subsonic range only, or, to be more precise, for flight at speeds below the critical Mach Number at which shock waves are first formed. The critical value usually lies in the range 0.6 to 0.8, depending on the wing shape and incidence, as will be described in more detail later.

RECENT DEVELOPMENTS IN LABORATORY ORIENTATION OF CORES BY THEIR MAGNETIC POLARITY

Geophysics ◽  
1938 ◽  
Vol 3 (2) ◽  
pp. 122-129 ◽  
Author(s):  
Edward D. Lynton
Keyword(s):  
Experimental Work ◽  
Magnetic Polarity ◽  
Heavy Mineral ◽  
Human Errors ◽  
Recording Apparatus ◽  
The Past ◽  
Recent Developments

During the past year further experimental work has increased the applicability of this method of orienting well cores by their magnetic polarity so that definite results now total approximately 60% of all cores tested, the presence or lack of heavy mineral grains being the depending factor. The most important developments have been, first, the elimination of human errors by making the recording apparatus entirely automatic and foolproof; second, the introduction of automatic and combined forward and reverse runs on cores, which enables the operator to distinguish definitely between polarized mineral grains and material with susceptibility only.

scholarly journals Diffusion-Controlled Processes in Microwave-Fired Oxide Ceramics

1990 ◽  
Vol 189 ◽  
Author(s):  
Mark A. Janney ◽  
Hal D. Kimrey
Keyword(s):  
Experimental Work ◽  
Diffusion Coefficients ◽  
National Laboratory ◽  
Oxide Ceramics ◽  
Oak Ridge ◽  
Enhanced Diffusion ◽  
Controlled Processes ◽  
The Past ◽  
Diffusion Controlled ◽  
Satisfactory Theory

ABSTRACTProcessing oxide-based ceramics using microwave heating leads to a number of unexpected results, which can only be interpreted in terms of enhanced diffusion. Enhanced sintering has been observed in alumina and zirconia. Accelerated grain growth in dense, hot-pressed alumina has been demonstrated. Increased diffusion coefficients have been observed for diffusion of oxygen in sapphire. As yet, a satisfactory theory to account for these phenomena has not been developed. This paper reviews the experimental work conducted at the Oak Ridge National Laboratory during the past four years on the processing of oxides in both 2.45 and 28 GHz microwave furnaces.

scholarly journals The conductivity of uni-univalent salts in methyl alcohol at 25°C

1925 ◽  
Vol 109 (750) ◽  
pp. 351-368 ◽  
Keyword(s):  
Electrical Conductivity ◽  
Aqueous Solutions ◽  
Physical Properties ◽  
Methyl Alcohol ◽  
Experimental Work ◽  
Complete Understanding ◽  
Systematic Data ◽  
The Past ◽  
Aqueous Solvent ◽  
Solutions Of Electrolytes

The physical properties of solutions of electrolytes in non-aqueous solvents have been investigated in the past by a number of workers, but until recently the work in this field has been characterised to some extent by lack of accuracy and of co-ordination. The need for accurate experimental work in this direction is clear when it is realised that modern theories of the behaviour of electrolytes in solution are based almost entirely on data obtained for solutions in water. It is probable that a more complete understanding of the nature of solutions can come only through experimental work extending over a range of solvents: the peculiar properties of water as a solvent have tended hitherto to obscure many of the fundamental difficulties of the problem by cloaking them in the garb of simplicity. The work which forms the substance of this paper was undertaken with a view to obtaining some systematic data for the electrical conductivity of dilute solutions of uni-univalent salts in a non-aqueous solvent, of an accuracy comparable with that of Kohlrausch and his co-workers in the case of aqueous solutions. The choice of methyl alcohol as a solvent was governed by the fact that it is most closely allied to water in type, and is experimentally well suited for such an investigation.

scholarly journals To the Issue of Intermittent Fasting Diet Effect on Human Body

2021 ◽  
Vol 7 (9) ◽  
pp. 410-416
Author(s):  
A. Evseev
Keyword(s):  
Human Health ◽  
Human Body ◽  
Experimental Work ◽  
Intestinal Tract ◽  
Intermittent Fasting ◽  
Benefit Ratio ◽  
The Past ◽  
Religious Fasting

The article raises the issue of intermittent fasting (IF) effect on human health, including patients with comorbidity. The aims of the paper are to study, investigate and summarize the results of the clinical experimental work dedicated to IF over the past fifteen years, as of 2005. The author evaluates a “risk–benefit” ratio of IF; its effect on nutrition restrictions linked with religious fasting; IF exposure on the structure and composition of microbiota of intestinal tract. Despite numerous papers dedicated to experiments held on rodents, the issue under discussion is yet insufficiently studied and needs further research.

scholarly journals Recent Progress in North American Avalanche Forecasting and Control

1960 ◽  
Vol 3 (28) ◽  
pp. 679-685 ◽  
Author(s):  
E. R. LaChapelle
Keyword(s):  
North America ◽  
Experimental Work ◽  
Recent Progress ◽  
Control Measures ◽  
Power Lines ◽  
Avalanche Forecasting ◽  
The Past ◽  
Ski Areas ◽  
And Control ◽  
High Degree

Abstract The techniques of avalanche forecasting and control have found increasingly wide adoption in North America in the past decade. Numerous government and private agencies are now engaged in work to protect ski areas, highways, railroads and power lines. Practical control measures such as artillery fire have been developed to a high degree of effectiveness, but the construction of permanent defense structures other than snow sheds is still in its infancy. Experimental work on instrumentation, forecasting, defense structures and the use of explosives, artillery and jet aircraft is currently in progress.

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