Rubidium Sulfate Flame Detector: Effect of Design of Alkali Source and Anode on Sensitivity and Stability

1969 ◽  
Vol 52 (3) ◽  
pp. 533-541
Author(s):  
Hiroko K DeLoach ◽  
D D Hemphill
Keyword(s):  
Detection System ◽  
Physical Stability ◽  
Optimum Conditions ◽  
Flame Detector ◽  
Short And Long Term ◽  
Rubidium Sulfate ◽  
Relationship Of ◽  
The Relationship

Abstract An improved alkali-flame detector using pure rubidium sulfate and an anode of new design were optimized for the quantitative determination of organophosphate pesticides. The performance of this detection system was evaluated for response to organophosphate standards, noise level, fluctuation of baseline, short- and long-term reproducibility at low pesticides levels, conditioning time of instrument, life and physical stability of alkali source, and required frequency of detector cleaning. Under optimum conditions the detector was sensitive to 1 pg pesticide standard. To define the parameters of the alkali flame detector, studies were made of different designs of the alkali source which influence flame configuration and the relationship of the position and shape of the anode to the flame. The most important parameter appears to be the method of introducing alkali vapor.

scholarly journals Short- and long-term effects of rearing dairy calves with contact to their mother on their reactions towards humans

2020 ◽  
Vol 87 (S1) ◽  
pp. 148-153 ◽  
Author(s):  
Susanne Waiblinger ◽  
Kathrin Wagner ◽  
Edna Hillmann ◽  
Kerstin Barth
Keyword(s):  
Dairy Calves ◽  
Long Term Effects ◽  
Young Stock ◽  
Human Contact ◽  
Significant Difference ◽  
Short And Long Term ◽  
Relationship Of ◽  
The Relationship

AbstractIn this Research Communication we address the hypotheses that reduced contact with humans during the first week of life would impair the relationship of dairy calves reared in dam-calf-contact systems to humans in comparison with artificially reared animals, but that this difference would vanish over time. Artificially reared calves (Artificial) that had been separated from their mother within 12 h after birth were bottle-fed with colostrum for 5 d and thereafter sucked milk from an automatic milk feeder. Animals reared with dam-calf contact (Dam-contact) were kept in the calving pen with their dam for 5 d, and then had permanent access to the cow barn and thus to their dam. Calves were weaned at an age of 12 weeks and kept in young stock groups mixed of both treatments until integration into the cow herd. We tested the animals’ relationship with humans by assessing the animals' responses towards an unfamiliar person in an avoidance distance (AD) test in the home environment at 4 weeks of age, at 15 months and at 33 months. In calves, we additionally measured AD in a novel arena after a stationary person test. Artificial animals had lower AD, i.e. showed lower level of fear, than Dam-contact calves. However, the AD in Dam-contact calves decreased with increasing number of days they experienced assistance for suckling. Further, there was no significant difference in later ages. In conclusion, gentle human contact in combination with feeding during the first 5 d of life improved calves' relationship to humans leading to differences between the two treatments as well as within the Dam-contact calves. Potential effects under different conditions regarding quantity and quality of human-animal interactions need further research.

Focal Psychotherapy: Its Potential Impact on Psychotherapeutic Practice in Medicine

1972 ◽  
Vol 3 (4) ◽  
pp. 311-325 ◽  
Author(s):  
Paul H. Ornstein ◽  
Anna Ornstein
Keyword(s):  
Treatment Process ◽  
Practitioner Training ◽  
Therapeutic Results ◽  
Complete Treatment ◽  
Short And Long Term ◽  
Potential Impact ◽  
Relationship Of ◽  
The Relationship

A condensed illustration of a complete treatment process of “focal psychotherapy” is presented to contrast the specificity of this form of psychotherapy with nonspecific approaches. A two-year follow-up illustrates the meaning of specificity. The relationship of therapeutic results to the focal interventions is reflected in the patient's own views of his accomplishments in therapy. The theory and techniques of focal psychotherapy were originally worked out by Balint and his co-workers. The case example presented here is the basis of discussion showing how focal psychotherapy can help re-conceptualize and add precision to the theory, techniques and processes of both short- and long-term psychoanalytic psychotherapy. Such increased precision in interventions and focal aims could help leaders and general practitioner training groups to better achieve their collaborative tasks.

Self-Consciousness in Schizophrenics

1981 ◽  
Vol 49 (2) ◽  
pp. 631-634 ◽  
Author(s):  
Antonio E. Puente ◽  
Sharon Morrisey
Keyword(s):  
Comparison Group ◽  
The Self ◽  
Antisocial Personality ◽  
Differential Group ◽  
Upper Limits ◽  
Psychometric Measures ◽  
Short And Long Term ◽  
Relationship Of ◽  
The Relationship

This study assessed the efficacy of the Self-consciousness Scale in differentiating short- and long-term schizophrenics from sociopaths and psychiatric aides. Three groups of 10 state hospital residents were selected on the basis of evidence of schizophrenia or antisocial personality using both interview and psychometric measures. A comparison group of 10 randomly chosen psychiatric aides were also included. Although no significant differential group effects were noted, all groups scored in the upper half of the scale's range. Discussed are the potential lack of sensitivity of this scale at its upper limits, the relationship of self-consciousness to disordered behavior, and the comparison of obtained scores with college norms.

scholarly journals The Importance of Integrated Goal Setting: The Application of Cost-of-Capital Concepts to Private Firms

2004 ◽  
Vol 17 (4) ◽  
pp. 287-302 ◽  
Author(s):  
A. Frank Adams ◽  
George E. Manners ◽  
Joseph H. Astrachan ◽  
Pietro Mazzola
Keyword(s):  
Goal Setting ◽  
Cost Of Capital ◽  
Private Firms ◽  
Financial Return ◽  
Short And Long Term ◽  
Relationship Of ◽  
The Relationship

In this article, we examine financial return, answer the question of how one knows when the return is adequate, and explore the relationship of short- and long-term returns as they relate to business health.

The relationship of arousal to short- and long-term verbal recall.

1963 ◽  
Vol 17 (4) ◽  
pp. 393-397 ◽  
Author(s):  
Lewis J. Kleinsmith ◽  
Stephen Kaplan ◽  
Robert D. Trate
Keyword(s):  
Verbal Recall ◽  
Short And Long Term ◽  
Relationship Of ◽  
The Relationship

Early First-Grade Skills Related to Subsequent Reading Performance: A Seven Year Followup Study

1976 ◽  
Vol 8 (1) ◽  
pp. 67-81 ◽  
Author(s):  
Siegmar Muehl ◽  
Mario C. Di Nello
Keyword(s):  
First Grade ◽  
Reading Performance ◽  
Letter Naming ◽  
Short And Long Term ◽  
Intellectual Skills ◽  
Grade One ◽  
Relationship Of ◽  
The Relationship ◽  
Naming Performance

Reports seven-year followup study of 56 Ss to assess contributions of first-grade skills to subsequent reading performance. The Harrison-Stroud Reading Readiness Profiles and WISC were administered to Ss early in first grade to form a pool of 19 skill tests. Multiple regression analyses were used to screen the skill tests to arrive at a set of independent and significant reading predictors. Results showed that two slightly different sets of skills emerged as short- and long-term predictors. In grade one and two, the ability to understand that printed words stand for ideas and the ability to make visual discriminations were important. Information background and reasoning ability emerged as significant predictors for the long term beginning in second and third grades. The ability to name letters proved a significant and independent predictor at every grade level. An analysis of the relationship of letter naming to other skills revealed that letter-naming ability in early first grade was related to a variety of skills involved in the reading process including sensory and intellectual skills. Related research suggested that individual differences in letter-naming performance in kindergarten and early first grade may reflect, in part, maturational differences among children.

Calculating the aerodynamics of vertical axis wind turbines

2012 ◽  
Vol 34 (3) ◽  
pp. 169-184 ◽  
Author(s):  
Hoang Thi Bich Ngoc
Keyword(s):  
Wind Turbine ◽  
Incidence Angle ◽  
Vertical Axis ◽  
Rotor Blades ◽  
Vertical Axis Wind Turbine ◽  
Horizontal Axis Wind Turbine ◽  
Velocity Triangle ◽  
Relationship Of ◽  
The Relationship

Vertical axis wind turbine technology has been applied last years, very long after horizontal axis wind turbine technology. Aerodynamic problems of vertical axis wind machines are discussible. An important problem is the determination of the incidence law in the interaction between wind and rotor blades. The focus of the work is to establish equations of the incidence depending on the blade azimuth, and to solve them. From these results, aerodynamic torques and power can be calculated. The incidence angle is a parameter of velocity triangle, and both the factors depend not only on the blade azimuth but also on the ratio of rotational speed and horizontal speed. The built computational program allows theoretically selecting the relationship of geometric parameters of wind turbine in accordance with requirements on power, wind speed and installation conditions.

Tire Treadwear — A Comprehensive Evaluation of the Factors: Generic Type, Aspect Ratio, Tread Pattern, and Tread Composition Part I: Introduction and Details on the Organization of the Program

1986 ◽  
Vol 14 (4) ◽  
pp. 201-218 ◽  
Author(s):  
A. G. Veith
Keyword(s):  
Aspect Ratio ◽  
Comprehensive Evaluation ◽  
Test Method ◽  
Interactive Effects ◽  
Data Analyses ◽  
Main Effect ◽  
Systematic Determination ◽  
Relationship Of ◽  
The Relationship

Abstract This four-part series of papers addresses the problem of systematic determination of the influence of several tire factors on tire treadwear. Both the main effect of each factor and some of their interactive effects are included. The program was also structured to evaluate the influence of some external-to-tire conditions on the relationship of tire factors to treadwear. Part I describes the experimental design used to evaluate the effects on treadwear of generic tire type, aspect ratio, tread pattern (groove or void level), type of pattern (straight rib or block), and tread compound. Construction procedures and precautions used to obtain a valid and functional test method are included. Two guiding principles to be used in the data analyses of Parts II and III are discussed. These are the fractional groove and void concept, to characterize tread pattern geometry, and a demonstration of the equivalence of wear rate for identical compounds on whole tread or multi-section tread tires.

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