Results 21 to 30 of about 3,665,294 (312)

The quantitative genetic basis of sex ratio variation in Nasonia vitripennis : a QTL study [PDF]

open access: yes, 2010
Our understanding of how natural selection should shape sex allocation is perhaps more developed than for any other trait. However, this understanding is not matched by our knowledge of the genetic basis of sex allocation.
Shuker, DM   +20 more
core   +1 more source

Spectrum Intensity Ratio Detection for Frequency Domain Weak Measurement System

open access: yesIEEE Photonics Journal, 2020
The traditional method of frequency domain weak measurement has a lot of noise. In this paper, we analyze the 2000 curves obtained by experiments and get the conclusion that the signal-to-noise ratio will increase with the increase of signal strength. We
Yuxuan Yang   +9 more
doaj   +1 more source

Evaluation of a Variable Ratio Cardioplegia System

open access: yesThe Journal of ExtraCorporeal Technology, 1996
Gish Biomedical has designed a blood cardioplegia delivery system (MyoManagerTM) which is purported to provide rapid control of blood and crystalloid solution ratios for myocardial preservation. The present study was designed to evaluate the ability of this device to provide cardioplegia solutions of specific hematocrit and potassium ion concentrations
J J, Deptula   +4 more
openaire   +2 more sources

The period-ratio and mass-ratio correlation in extra-solar multiple planetary systems [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society: Letters, 2015
Abstract Employing the data from orbital periods and masses of extra-solar planets in 166 multiple planetary systems, the period ratio and mass ratio of adjacent planet pairs are studied. The correlation between the period ratio and mass ratio is confirmed, with a correlation coefficient of 0.5303 with a 99 per cent confidence interval ...
Jiang, Ing-Guey   +2 more
openaire   +2 more sources

Optimal Sizing and Location of Photovoltaic Generation and Energy Storage Systems in an Unbalanced Distribution System

open access: yesEnergies, 2022
There has been an increasing number of renewable energy sources introduced into the distribution system to decrease the dependence on single power sources and relieve their effects related to global warming caused by power consumption.
Ming-Yuan Chiang   +4 more
doaj   +1 more source

Effective role of CaO/P2O5 ratio on SiO2-CaO-P2O5 glass system

open access: yesJournal of Advanced Research, 2017
In the present work, the effect of the CaO/P2O5 ratio on the composition of sol-gel synthesized 58SiO2-(19 − x)P2O5–(23 + x)CaO (x = 0, 5, 10 and 15 mol%) glass samples was studied. Further, the effect of NBO/BO ratio on hydroxy carbonated apatite layer (
P. Kiran   +4 more
doaj   +1 more source

High neutrophil-to-lymphocyte ratio predicts short survival in multiple system atrophy

open access: yesnpj Parkinson's Disease, 2022
The neutrophil-to-lymphocyte ratio (NLR), an inflammatory marker, can predict the prognosis of neurodegenerative diseases. However, the significance of NLR for the prognosis of multiple system atrophy (MSA) has not been reported.
LingYu Zhang   +6 more
doaj   +1 more source

Optimization of Pollutant Discharge Permits, Using the Trading Ratio System: A Case Study

open access: yesEarth, 2022
Water quality management of rivers is one of the challenges in the analysis of water resource systems. The optimal operation of the pollutant carrying capacity of these systems provides significant economic value and could reduce treatment costs. In this
Masoud Taheriyoun   +3 more
doaj   +1 more source

The Labor/Land Ratio and India's Caste System [PDF]

open access: yesSSRN Electronic Journal, 2012
This paper proposes that India's caste system and involuntary labor were joint responses by a nonworking landowning class to a low labor/land ratio in which the rules of the caste system supported the institution of involuntary labor. The hypothesis is tested in two ways: longitudinally, with data from ancient religious texts, and cross-sectionally ...
openaire   +3 more sources

Breccia and vein mineralization of the Balatoc Diatreme, Acupan gold deposit, Baguio Mineral District: An example of a diatreme-hosted epithermal deposit in the Philippines

open access: yes, 2022
The Acupan epithermal gold deposit is one of the Philippines’ largest gold camps, having produced over 200 t Au in the last century with average grades of ∼ 6 g/t Au mostly from well-studied vein orebodies hosted by the Virac Granodiorite.
Figueroa, Acer Jian   +5 more
core   +1 more source

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