Influence of the gas pressure on the initial phase in coaxial accelerator

Abstract:Excitable media, such as nerve, heart and the Belousov-Zhabo- tinsky reaction, exhibit a large excursion from equilibrium in response to a small but finite perturbation. Assuming a one-dimensional ring geometry of sufficient length, excitable media support a periodic wave of circulation. As in the periodic stimulation of oscillations in ordinary differential equations, the effects of periodic stimuli of the periodically circulating wave can be described by a one-dimensional Poincaré map. Depending on the period and intensity of the stimulus as well as its initial phase, either entrainment or termination of the original circulating wave is observed. These phenomena are directly related to clinical observations concerning periodic stimulation of a class of cardiac arrhythmias caused by reentrant wave propagation in the human heart.

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Digital method of the harmonic signal initial phase determination at a sampling below the Nyquist frequency

Izmeritel`naya Tekhnika ◽

10.32446/0368-1025it.2019-7-54-57 ◽

2019 ◽

pp. 54-57

Author(s):

J.N. Lazo ◽

V.S. Tutygin

Keyword(s):

Initial Phase ◽

Harmonic Signal ◽

Digital Method ◽

Nyquist Frequency ◽

Phase Determination

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Characterization of dissolved material during the initial phase of softwood kraft pulping

TAPPI Journal ◽

10.32964/tj12.1.37 ◽

2013 ◽

Vol 12 (1) ◽

pp. 37-43 ◽

Cited By ~ 1

Author(s):

HANNU PAKKANEN ◽

TEEMU PALOHEIMO ◽

RAIMO ALÉN

Keyword(s):

Mass Transfer ◽

Molecular Mass ◽

Initial Phase ◽

Degradation Products ◽

Kraft Pulping ◽

Reaction Products ◽

Cooking Temperature ◽

Molecular Masses ◽

Aliphatic Carboxylic Acids

The influence of various cooking parameters, such as effective alkali, cooking temperature, and cooking time on the formation of high molecular mass lignin-derived and low molecular mass carbohydrates-derived (aliphatic carboxylic acids) degradation products, mainly during the initial phase of softwood kraft pulping was studied. In addition, the mass transfer of all of these degradation products was clarified based on their concentrations in the cooking liquor inside and outside of the chips. The results indicated that the degradation of the major hemicellulose component, galactoglucomannan, typically was dependent on temperature, and the maximum degradation amount was about 60%. In addition, about 60 min at 284°F (140°C) was needed for leveling off the concentrations of the characteristic reaction products (3,4-dideoxy-pentonic and glucoisosaccharinic acids) between these cooking liquors. Compared with low molecular mass aliphatic acids, the mass transfer of soluble lignin fragments with much higher molecular masses was clearly slower.

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205. Evaluation of Elemental Mercury Releases Associated with the Removal of Gas Pressure Regulators in Homes

10.3320/1.2766130 ◽

2002 ◽

Author(s):

P. Williams ◽

D. Paustenbach ◽

P. Sheehan ◽

G. Brorby

Keyword(s):

Elemental Mercury ◽

Gas Pressure

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Registration system of optical radiation with ns-scale time resolution for atmospheric discharge’s initial phase investigation

Scientific Herald of Uzhhorod University Series Physics ◽

10.24144/2415-8038.2011.30.313-320 ◽

2011 ◽

Vol 30 (0) ◽

pp. 313-320

Author(s):

К. В. Шпаков ◽

А. В. Огинов

Keyword(s):

Time Resolution ◽

Initial Phase ◽

Optical Radiation ◽

Registration System

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DIVERSITY OF FISH LARVAE AROUND THE ESTUARY OF THE BANYUASIN RIVER, SOUTH SUMATERA PROVINCE

BIOVALENTIA Biological Research Journal ◽

10.24233/biov.6.2.2020.181 ◽

2020 ◽

Vol 6 (2) ◽

Author(s):

Moh. Rasyid Ridho ◽

Enggar Patriono ◽

Sarno Sarno ◽

Sahira Wirda

Keyword(s):

Initial Phase ◽

Sampling Method ◽

Environmental Changes ◽

Negative Impact ◽

Fish Larvae ◽

River Estuary ◽

Sampling Technique ◽

Critical Phase ◽

Morisita Index ◽

Index Value

The initial phase of the fish life cycle is a critical phase associated with high mortality due to sensitivity to predators, food availability, and also environmental changes that occur in nature. Disruption of the initial stages of fish life has a negative impact on fish populations. Until now there has been no information about fish larvae around the Banyuasin River Estuary. Therefore, research is needed on the diversity of fish larvae around the Banyuasin River Estuary, South Sumatra Province. This research were used purposive sampling method, sampling technique in the form of Cruise Track Design with continuous parallel survey trajectory. Based on the results of the study found as many as 10 families consisting of 1483 individuals of fish larvae in March and 1013 individuals of fish larvae in May consisting of Engraulidae 1,601 individuals of fish larvae, Mungiloidei as many as 109 individuals, Leiognathidae 50 individuals, Chanidae 453 individuals, Scatophagidae 20 individuals , Belonidae 39 individuals, Gobioididae 5 individuals, Chandidae 183 individuals, Syngnatihidae 6 individuals, and Gobiidae 30 individuals fish larvae. The index value of fish larvae diversity is classified as medium category (March 1.02 and May 1.12), Morisita index shows the distribution pattern of fish larvae classified as a group (March 0-14.17 and May 2.43-10.40 ), and the evenness index value is in the medium category (March 0.437 and May 0.521).

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