Results 141 to 150 of about 100,399 (331)

Hyperspectral Raman imaging to understand patterns in dried biofluids in Alzheimer's disease

open access: yesVIEW, EarlyView.
Raman spectroscopy is commonly used to identify biomarkers in biological fluids, often focusing on the outer ring of dried droplets due to molecular accumulation from the coffee ring effect. However, this approach may overlook important spectral information, so hyperspectral Raman mapping is used to analyze the entire droplet and identify optimal ...
Eneko Lopez   +8 more
wiley   +1 more source

Influence of anticoagulant on the spectroscopic analysis of drying bovine blood pools

open access: yesJournal of Forensic Sciences, EarlyView.
Abstract Rapidly, untreated whole blood undergoes a clotting cascade, making forensic research that investigates “fresh” bloodletting events difficult. In bloodstain pattern analysis research, whole blood treated with anticoagulant is often used to prolong the usability of the blood and allow for transport and experimentation to simulate pattern ...
Erin Giroux   +2 more
wiley   +1 more source

Spectral wavelength range influences the performance of chemometric models estimating various foliar functional traits

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Hyperspectral reflectance can potentially be used to non‐destructively estimate a diverse suite of plant physiochemical functional traits by applying chemometric approaches to leverage absorption features related to chemical compounds and physiological processes associated with these traits.
Minjee Park   +6 more
wiley   +1 more source

Optimisation of purple dyeing with Mexican cochineal in cotton with multivariate analysis and the response surface method

open access: yesColoration Technology, EarlyView.
Abstract This study aims to optimise the dyeing process of cotton fabrics using Mexican cochineal (Dactylopius coccus Costa). The objective is to obtain purple hues through the design of experiments and by using multivariate analysis. Plackett–Burman experimental designs and the response surface method were used to systematically optimise the dyeing ...
Ernesto Olvera‐Quintanar   +3 more
wiley   +1 more source

Estimating Hedge Fund Leverage: A Three‐Step Estimation Protocol

open access: yesFinancial Markets, Institutions &Instruments, EarlyView.
ABSTRACT Utilizing a micro‐level hedge fund dataset, we propose a methodology for estimating hedge fund leverage. Initially, we perform a Principal Component Analysis on a set of 49 risk factors for dimension deduction purposes. After acquiring 10 Principal Components, we deploy the Least Absolute Shrinkage and Selection Operator regression (Lasso) per
Ariston Karagiorgis, Konstantinos Drakos
wiley   +1 more source

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