Activity Index and Lotkas's Law Validation on Human DNA Research

2020 ◽  
pp. 39-47
Author(s):  
P. Murugiah
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Activity Index ◽  
Mean Value ◽  
Relative Growth ◽  
Human Dna ◽  
Scopus Database ◽  
Lotka’S Law

The chapter analyzes the activity index and Lotka's law validation on human DNA research during 1989-2013. This present study uses Scopus database to find publications of ‘Human DNA'. The study showed that the lowest relative growth rate (RGR) was 0.04 in 2008, 2010, 2012, and 2014. Similarly, the RGR rose to 0.75 in 1990, and the average mean value of RGR was 0.15. The total no. of authors was (an) = 82886 for 42 publications that each author contributed in the human DNA research. The authors reported that the percentage that authors predicted by Lotka's authors (F-P)2/P = 1526.66.

scholarly journals Infrared thermometry to schedule irrigation of common bean

2004 ◽  
Vol 39 (2) ◽  
pp. 113-121 ◽  
Author(s):  
Francisco de Almeida Lobo ◽  
Marco Antonio Oliva ◽  
Morethson Resende ◽  
Nei Fernandes Lopes ◽  
Moacyr Maestri
Keyword(s):  
Growth Rate ◽  
Common Bean ◽  
Leaf Area ◽  
Relative Growth Rate ◽  
Linear Correlation ◽  
Canopy Temperature ◽  
Mean Value ◽  
Relative Growth ◽  
Infrared Thermometry ◽  
Significant Linear Correlation

The objective of this work was to determine the critical irrigation time for common bean (Phaseolus vulgaris L. cv. Carioca) using infrared thermometry. Five treatments were analyzed. Canopy temperature differences between plants and a well-watered control about 1, 2, 3, 4, and 5±0.5ºC were tested. Physiological variables and plant growth were analyzed to establish the best time to irrigate. There was a significant linear correlation between the index and stomatal resistance, transpiration rate, and leaf water potential. Although significant linear correlation between the index and mean values of total dry matter, absolute growth rate, and leaf area index was found, no correlation was found with other growth index like relative growth rate, net assimilation rate, and leaf area ratio. Plants irrigated when their canopy temperature was 3±0.5ºC above the control had their relative growth rate mean value increased up to 59.7%, yielding 2,260.2 kg ha-1, with a reduction of 38.0% in the amount of water used. Plants irrigated when their canopy temperature was 4±0.5ºC yielded 1,907.6 kg ha-1, although their relative growth rate mean value was 4.0% below the control. These results show that the best moment to irrigate common bean is when their canopy temperature is between 3ºC and 4±0.5ºC above the control.

Altmetrics Research on the Global Output

2020 ◽  
pp. 62-73
Author(s):  
C. Baskaran
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Information Science ◽  
Mean Value ◽  
Library Science ◽  
Relative Growth ◽  
Research Fields ◽  
Research Publications ◽  
Number Of Publications ◽  
The University

The chapter describes the research publications on altmetrics research during 2012-2019. A total of 461 publications were brought out on this area over period of study. 25.81% of the publications were published in the year 2018. It is analyzed that information science and library science areas hold the majority 293 (63.55%) of the publications, and the University of Wolverhampton has contributed the highest number (40; 8.67%) of the publications in the field of altmetrics. The study found that lowest relative growth rate (RGR; 0.04) was found in 2008. 2010, 2012, and 2014 RGR rose up to 0.75 in 1990, and the average mean value of relative growth rate (RGR) is 0.15. The highest number of publications (293; 63.55%) accumulated from information science library science. This area has been ranked first among 25 research fields listed in the study.

scholarly journals Seed mass effects on germination and growth of diverse European Scots pine populations

1994 ◽  
Vol 24 (2) ◽  
pp. 306-320 ◽  
Author(s):  
P.B. Reich ◽  
J. Oleksyn ◽  
M.G. Tjoelker
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Scots Pine ◽  
Field Experiments ◽  
Seed Mass ◽  
Growing Season ◽  
Turkish Population ◽  
Dry Mass ◽  
Relative Growth ◽  
Mass Effects

Seedlings of 24 European Scots pine (Pinussylvestris L.) populations were grown in controlled environment chambers under simulated photoperiodic conditions of 50 and 60°N latitude to evaluate the effect of seed mass on germination and seedling growth characteristics. Seeds of each population were classified into 1-mg mass classes, and the four classes per population with the highest frequencies were used. Photoperiod had minimal influence on seed mass effects. Overall, seed mass was positively related to the number of cotyledons and hypocotyl height. Populations differed significantly in seed mass effect on biomass. In northern populations (55–61°N), dry mass at the end of the first growing season was little affected by seed mass. However, dry mass in 9 of 15 central populations (54–48°N) and all southern (<45°N) populations correlated positively with seed mass. Relative growth rate was not related to seed mass within or across populations, and thus early growth is largely determined by seed mass. Relative growth rate also did not differ among populations, except for a geographically isolated Turkish population with the highest seed mass and lowest relative growth rate. After one growing season, height was positively correlated (r2 > 0.6) with seed mass in 15 populations. To check the duration of seed mass effects, height growth of 1- to 7-year-old field experiments established with the same seed lots were compared. Seed mass effects on height were strongest for 1-year-old seedlings and declined or disappeared by the age of 5–7 years among central and southern populations, but remained stable over that time in northern populations.

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