scholarly journals The Dynamic Characteristics Research of Compact Heat Regenerator used in Regenerative Burners for Metallurgical Heating Furnaces

2014 ◽  
Vol 59 (2) ◽  
pp. 805-808
Author(s):  
M. Wnęk
Keyword(s):  
High Frequency ◽  
Thermal Field ◽  
Temperature Sensors ◽  
Flame Stabilization ◽  
Heat Transfer Intensification ◽  
Heating Furnaces ◽  
Starting State ◽  
Gas Fuel ◽  
Gas Burner ◽  
The Right

Abstract The gas burner is a device which the main aim is delivering the right number of gas fuel and oxidizing agent and it also has to ensure flame stabilization. The difficult controlling problem appears when the modern and compact high temperature regenerative burners are used. The controlling difficulties in those systems are related to the large number of burners and a periodic change (with high frequency) of temperature field which depends on such parameter as reversion time. The knowledge of the dynamic and static regenerator characteristics makes easier the programming of automatic control and regulation process and helps in creating the new regenerator filling construction in order to improve the heat transfer intensification and the furnaces efficiency. Based on research results the paper presents the selected data research dealing with the dynamic and static regenerator characteristic. The measurement of quick-changing fluctuating thermal field and the way of the temperature sensors selection have been indicated. The regenerator starting state and pseudo-steady state characteristics have also been presented. Finally the qualities of the regenerator and the economic income have been expressed.

scholarly journals Influence of the Training in Relation to the Fire-Fighting Effectiveness under the Condition of the Indoor Fire Simulation

2016 ◽  
Vol 11 (1) ◽  
pp. 14-26
Author(s):  
Jan Hora ◽  
Jan Žižka
Keyword(s):  
Large Scale ◽  
Thermal Field ◽  
Human Factor ◽  
Confined Space ◽  
Fire Dynamics ◽  
Gas Fuel ◽  
Large Container ◽  
The Right ◽  
Large Scale Tests ◽  
Liquefied Gas

Abstract Fire Dynamics in a confined space is considerably difficult. Flashover container enables experimental examining of many of its aspects in controllable conditions. For this reason there is an extensive research in form of large scale tests goes in Zbiroh where large container complex for liquefied gas fuel was built. In this time a human factor and its effect on the environment is in the research. Among others the tests were aimed to examining the influence of the training on the efficiency of the intervention under indoor fire conditions, namely the ability of a fire-fighter affect the thermal field and the thermal radiation in the right direction. The article describes the experiments that were carried out.

scholarly journals Role of thermal field in entanglement harvesting between two accelerated Unruh-DeWitt detectors

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Dipankar Barman ◽  
Subhajit Barman ◽  
Bibhas Ranjan Majhi
Keyword(s):  
Mutual Information ◽  
Critical Point ◽  
Thermal Field ◽  
Narrow Range ◽  
Critical Value ◽  
Critical Values ◽  
Parallel Motion ◽  
Field Temperature ◽  
The Right

Abstract We investigate the effects of field temperature T(f) on the entanglement harvesting between two uniformly accelerated detectors. For their parallel motion, the thermal nature of fields does not produce any entanglement, and therefore, the outcome is the same as the non-thermal situation. On the contrary, T(f) affects entanglement harvesting when the detectors are in anti-parallel motion, i.e., when detectors A and B are in the right and left Rindler wedges, respectively. While for T(f) = 0 entanglement harvesting is possible for all values of A’s acceleration aA, in the presence of temperature, it is possible only within a narrow range of aA. In (1 + 1) dimensions, the range starts from specific values and extends to infinity, and as we increase T(f), the minimum required value of aA for entanglement harvesting increases. Moreover, above a critical value aA = ac harvesting increases as we increase T(f), which is just opposite to the accelerations below it. There are several critical values in (1 + 3) dimensions when they are in different accelerations. Contrary to the single range in (1 + 1) dimensions, here harvesting is possible within several discrete ranges of aA. Interestingly, for equal accelerations, one has a single critical point, with nature quite similar to (1 + 1) dimensional results. We also discuss the dependence of mutual information among these detectors on aA and T(f).

P367: High frequency deep rTMS over the right homologous Broca’s region improves naming in chronic post-stroke aphasia: a pilot study

2014 ◽  
Vol 125 ◽  
pp. S145
Author(s):  
R. Chieffo ◽  
F. Ferrari ◽  
P. Battista ◽  
E. Houdayer ◽  
A. Nuara ◽  
...  
Keyword(s):  
Pilot Study ◽  
High Frequency ◽  
Post Stroke ◽  
Broca’S Region ◽  
The Right

Diaphragmatic flutter

2018 ◽  
Vol 18 (3) ◽  
pp. 224-226 ◽  
Author(s):  
Dean Walton ◽  
Michael Bonello ◽  
Malcolm Steiger
Keyword(s):  
Respiratory Distress ◽  
Medical Treatment ◽  
Abdominal Wall ◽  
Phrenic Nerve ◽  
High Frequency ◽  
Rare Disorder ◽  
Nerve Crush ◽  
Irregular Variable ◽  
The Right ◽  
High Index Of Suspicion

A 78-year-old woman presented with involuntary movements of her abdomen, which started after a right hemispheric stroke. She had irregular, variable, hyperkinetic predominantly right-sided abdominal wall movements. MR scan of brain confirmed a recent infarct in the right occipitotemporal lobe and the right cerebellum. Diaphragmatic fluoroscopy confirmed high-frequency flutter as the cause of her abdominal movements and confirmed the diagnosis of van Leeuwenhoek’s disease. Anthonie van Leeuwenhoek first described this condition in 1723 and had the condition himself. He was a Dutch businessman who is often acknowledged as the first microscopist and microbiologist. He disagreed with his physician who attributed his ailment as being of cardiac origin. Diaphragmatic flutter is a rare disorder that requires a high index of suspicion with symptoms including abnormal abdominal wall movements, dyspnoea and respiratory distress. Despite medical treatment, the patient was still highly symptomatic, so she is currently being considered for a phrenic nerve crush.

Differential criteria for clinical manifestations of biliary dyskinesia and chronic cholecystitis

2021 ◽  
Vol 03 (01) ◽  
pp. 32-34
Author(s):  
Ağaşirin Aydın oğlu Rüstəmov ◽  
◽  
Fatma Fatma Oruc qızı Rəcəbova7............ ◽  
Keyword(s):  
Early Diagnosis ◽  
High Frequency ◽  
Ultrasound Examination ◽  
Clinical Manifestations ◽  
Chronic Cholecystitis ◽  
High Frequency Ultrasound ◽  
Laboratory Methods ◽  
Dyspeptic Symptoms ◽  
The Right ◽  
Frequency Ultrasound

For the diagnosis and differentiation of chronic cholesistoxolangiitis from the diseases of the biliary system, 20 patients used modern instrumental and laboratory methods. In these methods, excision cholesistorentgenography, retrograde cholangiography, high frequency ultrasound examination, and cholesterol in the blood, manometric tonometry. In the objective examination, patients were disturbed by the pain on the right side of the neck, on the right side of the breast and in the right rib. Dyspeptic symptoms such as lower appetite, nausea, vomiting, and meteorism have been discovered. Dietotherapy, spasmolitics, antibiotics, gallbladder and physiotherapy have also been used in the treatment. Thus, based on the results of our examination, it is recommended that they be used in early diagnosis of chronic cholesistoxolangitis. Key words: cholangiocholecystitis, gallbladder, symptoms, clinical, diagnosis

Vocal Reaction Times to Tachistoscopically Presented High- and Low-Frequency Verbs: Some Evidence for Selective Minor Hemisphere Linguistic Analysis

1988 ◽  
Vol 66 (3) ◽  
pp. 803-810 ◽  
Author(s):  
Michael P. Rastatter ◽  
Catherine Loren
Keyword(s):  
Visual Field ◽  
High Frequency ◽  
Right Hemisphere ◽  
Visual Fields ◽  
Reaction Times ◽  
Low Frequency ◽  
Normal Subjects ◽  
Right Visual Field ◽  
Intact Brain ◽  
The Right

The current study investigated the capacity of the right hemisphere to process verbs using a paradigm proven reliable for predicting differential, minor hemisphere lexical analysis in the normal, intact brain. Vocal reaction times of normal subjects were measured to unilaterally presented verbs of high and of low frequency. A significant interaction was noted between the stimulus items and visual fields. Post hoc tests showed that vocal reaction times to verbs of high frequency were significantly faster following right visual-field presentations (right hemisphere). No significant differences in vocal reaction time occurred between the two visual fields for the verbs of low frequency. Also, significant differences were observed between the two types of verbs following left visual-field presentation but not the right. These results were interpreted to suggest that right-hemispheric analysis was restricted to the verbs of high frequency in the presence of a dominant left hemisphere.

Reliance on Visual Imagery and its Relation to Mental Rotation

1997 ◽  
Vol 85 (2) ◽  
pp. 431-434 ◽  
Author(s):  
Doris C. Weatherly ◽  
Steven E. Ball ◽  
James R. Stacks
Keyword(s):  
Mental Rotation ◽  
Response Latency ◽  
High Frequency ◽  
Visual Imagery ◽  
Learning Effect ◽  
Low Frequency ◽  
Computer Screen ◽  
The Right ◽  
Relationship Of ◽  
The Relationship

The relationship of habitual use of visual imagery and mental rotation was investigated. Reliance on Visual Imagery scores were used to define subjects as high frequency or low frequency visualizers. During the mental rotation task, subjects indicated if a pair of 2-dimensional stimulus figures displayed on a computer screen were identical or mirror-images. Figures on the right were rotated in relation to those on the left by 0, 60, 120, or 180°. Data supported the prediction that subjects who report high use of imagery would perform the task with greater accuracy ( z=1.97, p<.05) than subjects who reported low use. The imagery groups did not differ in response latency ( z = .91, p<.36). A comparison of performance on Trials 1 to 24 with performance on Trials 115-138 indicated a learning effect in both accuracy ( z = 7.58, p<.01) and latency ( z = 9.72, p<.01) for all subjects.

Effect of Monaural Hearing Aid Use on Dichotic Test Results for Individuals with High-Frequency Hearing Impairment

1986 ◽  
Vol 51 (2) ◽  
pp. 161-169 ◽  
Author(s):  
Rauna K. Surr ◽  
Allen A. Montgomery ◽  
H. Gustav Mueller
Keyword(s):  
Hearing Impairment ◽  
High Frequency ◽  
Hearing Aid ◽  
Individual Variability ◽  
Test Results ◽  
Hearing Aid Fitting ◽  
Hearing Aid Use ◽  
Ear Advantage ◽  
Right Ear Advantage ◽  
The Right

It is well documented that the majority of individuals with normal hearing have a right ear advantage for dichotic speech material. There is evidence, however, that individuals with flat sensorineural hearing loss demonstrate a left ear advantage after they have used amplification on the left side. The present study examined whether these findings could be extended to a population with high-frequency hearing impairment. The subjects were administered dichotic consonant-vowel syllable tests prior to a monaural hearing aid fitting, and the tests were repeated after 1 month and again after 6 months of hearing aid use. The results revealed a group right ear advantage prior to the hearing aid fitting, although there was considerable individual variability. No consistent changes in the test scores were shown to be associated with monaural hearing aid use in either the right ear or the left ear.

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