THE DEFINITION OF EFFECTIVE DOSE OF “SUMAKH FRUIT EXTRACT” IN THE PROCESS OF SPONTANEOUS MUTAGENESIS

2020 ◽  
pp. 3-6
Author(s):  
M. I. Guliyev ◽  
S. A. Israfilova ◽  
E. K. Gasimov
Keyword(s):  
Effective Dose ◽  
Fruit Extract ◽  
Spontaneous Mutagenesis ◽  
Definition Of

scholarly journals EKSTRAK BUAH NANAS TERHADAP JUMLAH TOTAL LEUKOSIT DAN NEUTROFIL IKAN LELE (Clarias batrachus) YANG DIINFEKSI DENGAN Aeromonas hydrophila

2020 ◽  
Vol 10 ◽  
pp. 70-77
Author(s):  
Ratna Widyawati ◽  
Dyah Widhowati ◽  
Dhia Nadhifa
Keyword(s):  
Effective Dose ◽  
Aeromonas Hydrophila ◽  
Challenge Test ◽  
Positive Control ◽  
Clarias Batrachus ◽  
Ananas Comosus ◽  
Fruit Extract ◽  
Treatment Groups ◽  
Pineapple Fruit ◽  
One Way Anova

The present research to determine the Extract of Pineapple (Ananas comosus) on the survival of catfish infected with A. Hydrophila. The main problem of cultivation of catfish (C. batrachus) is a disease caused by the bacterium Aeromonas hydrophila.Catfish (Clarias batrachus) is a freshwater fish that has several advantages, one of which is a high nutritional content. Test animals used were catfish measuring 15-20cm with a body weight of ± 250gr. Challenge test by injecting A. hydrophila suspension with a dose of 108sel / mm3 as much as 0.1mm intramuscularly. Observations were made for 7 days after infection  which included the total number of leukocytes and neutrophils. This study was divided into 5 treatment groups with 5 replications, namely P1 (positive control), P2 (0.1%), P3 (0.3%), P4 (0.5%),  P5  (0.7%)  and soaking Pineapple Fruit Extract for 24 hours. Data analysis in this study used one way ANOVA statistical test. The results showed symptoms of catfish attacked by Aeromonas hydrophila including increased total number of leukocytes and neutrophils and ulceration in catfish. Soaking effect Pineapple fruit extract 0.5% effective dose can reduce the total number of leukocytes and 0.7% effective dose can reduce the total number of neutrophils.

A regulatory perspective on whether the system of radiation protection is fit for purpose

2012 ◽  
Vol 41 (3-4) ◽  
pp. 57-63 ◽  
Author(s):  
M.A. Boyd
Keyword(s):  
Effective Dose ◽  
Radiation Protection ◽  
Organ Dose ◽  
Radiological Protection ◽  
X Rays ◽  
Tolerance Dose ◽  
Critical Organ ◽  
Fit For Purpose ◽  
And Gender ◽  
Definition Of

The system of radiation protection has its origins in the early efforts to protect people from x rays and radium. It was at the Second International Congress of Radiology in Stockholm in 1928 where the first radiation protection recommendations were adopted. The system of protection steadily evolved as new sources of exposure arose and understanding of radiation-related health risks improved. Safeguarding against these risks has required regulators to set enforceable (i.e. measurable) standards. From erythema dose to tolerance dose, critical organ dose to effective dose equivalent, and now effective dose, the units used to set these limits have evolved along with the science underpinning them. Similarly, the definition of the person or group being protected has changed - from Standard Man to Reference Man to Reference Person, with age and gender differences now considered explicitly. As regulators look towards implementing the changes in the 2007 Recommendations of the International Commission on Radiological Protection (ICRP), there remain questions about how to translate an optimisation-based system of constraints and reference levels into the more familiar regime of enforceable limits. Nevertheless, as the new ICRP Recommendations are refinements of a system that did the job it was designed to do more than adequately, so too will the new system of radiation protection be fit for purpose.

A new definition of biological effective dose: The dose distribution effects

2015 ◽  
Vol 31 (8) ◽  
pp. 1060-1064 ◽  
Author(s):  
Qinghui Zhang ◽  
Suqing Tian ◽  
Giovanni Borasi
Keyword(s):  
Effective Dose ◽  
Dose Distribution ◽  
Biological Effective Dose ◽  
Definition Of

Introductory paper

1966 ◽  
Vol 24 ◽  
pp. 3-5
Author(s):  
W. W. Morgan
Keyword(s):  
Line Intensity ◽  
Classification Scheme ◽  
Two Dimensional ◽  
Spectral Classification ◽  
Dimensional Array ◽  
Rr Lyrae ◽  
Metallic Line ◽  
Introductory Paper ◽  
Parameter Varying ◽  
Definition Of

1. The definition of “normal” stars in spectral classification changes with time; at the time of the publication of theYerkes Spectral Atlasthe term “normal” was applied to stars whose spectra could be fitted smoothly into a two-dimensional array. Thus, at that time, weak-lined spectra (RR Lyrae and HD 140283) would have been considered peculiar. At the present time we would tend to classify such spectra as “normal”—in a more complicated classification scheme which would have a parameter varying with metallic-line intensity within a specific spectral subdivision.

2.2. Working Group 2: Conceptual Definitions of Reference Coordinate Systems for Earth Dynamics

1975 ◽  
Vol 26 ◽  
pp. 21-26
Keyword(s):  
Coordinate System ◽  
Working Group ◽  
General Character ◽  
Coordinate Systems ◽  
Reference Coordinate System ◽  
Group 2 ◽  
Definition Of ◽  
Earth Dynamics

An ideal definition of a reference coordinate system should meet the following general requirements:1. It should be as conceptually simple as possible, so its philosophy is well understood by the users.2. It should imply as few physical assumptions as possible. Wherever they are necessary, such assumptions should be of a very general character and, in particular, they should not be dependent upon astronomical and geophysical detailed theories.3. It should suggest a materialization that is dynamically stable and is accessible to observations with the required accuracy.

Symbiotic Stars at Optical, Infrared and Radio Wavelengths

1979 ◽  
Vol 46 ◽  
pp. 125-149 ◽  
Author(s):  
David A. Allen
Keyword(s):  
Temperature Regime ◽  
Type Star ◽  
Stellar Systems ◽  
Symbiotic Stars ◽  
Lower Excitation ◽  
Definition Of ◽  
Original Type

No paper of this nature should begin without a definition of symbiotic stars. It was Paul Merrill who, borrowing on his botanical background, coined the termsymbioticto describe apparently single stellar systems which combine the TiO absorption of M giants (temperature regime ≲ 3500 K) with He II emission (temperature regime ≳ 100,000 K). He and Milton Humason had in 1932 first drawn attention to three such stars: AX Per, CI Cyg and RW Hya. At the conclusion of the Mount Wilson Ha emission survey nearly a dozen had been identified, and Z And had become their type star. The numbers slowly grew, as much because the definition widened to include lower-excitation specimens as because new examples of the original type were found. In 1970 Wackerling listed 30; this was the last compendium of symbiotic stars published.

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