Results 41 to 50 of about 7,030,691 (326)

Applications of the scanning test of trend changes in regression coefficients to monthly temperature over China and Globe

open access: yesAIMS Geosciences
The algorithm of the scanning t-test of regression slope-coefficients in two phases is introduced to detect trend change-points, along with a coherency analysis of changes between two time series.
Jianmin Jiang
doaj   +1 more source

Inheritance Pattern of Fiber Related Traits under Normal and Hypoxia Conditions in Cotton (Gossypium Hirsutum L.)

open access: yesJournal of Natural Fibers, 2017
An 8 × 8 diallel crossing system was employed in F1 generation of cotton to study the inheritance pattern of fiber related traits like micronaire, strength and maturity under normal and hypoxia conditions.
Altaf Hussain   +4 more
doaj   +1 more source

Growth performance, length – weight relationship and condition factor of Clarias gariepinus fed Anisophyllea laurina seed meal substitute

open access: yesJournal of Applied Sciences and Environmental Management, 2019
Length-weight relationships are of significance as an important tool for the assessment of the growth pattern of fish species and the condition in which they grow.
O.J. Olapade, K.U. Conteh
doaj   +1 more source

The effects of slope and altitude on soil organic carbon and clay content in different land-uses: A case study in the Czech Republic

open access: yesSoil and Water Research, 2023
Soil organic carbon (SOC) and clay, as indicators of soil fertility, are mainly used to determine the ability of soil to retain water and store the nutrients that are necessary for plant growth.
Shahin Nozari, Luboš Borůvka
doaj   +1 more source

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

Stability for grain yield and its contributing traits in sesame (Sesamum indicum L.)

open access: yesElectronic Journal of Plant Breeding, 2016
In this study, a set of seventeen genotypes of sesame (Sesamum indicum L.) were evaluated over three years from 2012-13 to 2014-15 to assess the stability of these genotypes for yield and its contributing traits over years and environments. Analysis of
R.S.Raikwar
doaj   +1 more source

Roughness coefficient of rock discontinuities based on random forest regression analyses

open access: yesShuiwen dizhi gongcheng dizhi, 2023
The peak shear strength of the discontinuities can be estimated quickly by the roughness of the discontinuities. However, it is difficult to quantify the roughness of the structural surface using the single statistical parameter.
Wenbin LI   +5 more
doaj   +1 more source

Quantile regression in partially linear varying coefficient models

open access: yes, 2009
Semiparametric models are often considered for analyzing longitudinal data for a good balance between flexibility and parsimony. In this paper, we study a class of marginal partially linear quantile models with possibly varying coefficients.
Wang, Huixia Judy   +2 more
core   +1 more source

Mean Squared Error Matrix comparison of Least Squares and Stein-Rule Estimators for Regression Coefficients under Non-normal Disturbances [PDF]

open access: yes, 2006
Choosing the performance criterion to be mean squared error matrix, we have compared the least squares and Stein-rule estimators for coefficients in a linear regression model when the disturbances are not necessarily normally distributed.
Heumann, Christian   +2 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

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