Results 61 to 70 of about 6,341 (182)

Quantitative 2D Nuclear Magnetic Resonance of Complex Mixtures: From General Analytical Homo/Heteronuclear Methods to Intrinsically Quantitative HSQC Approaches

Chemistry–Methods, Volume 6, Issue 7, July 2026.
Quantitative 2D nuclear magnetic resonance methods provide accurate individual analyte concentrations in complex mixtures. This review provides a unified description and comparison of such methods, together with an overview of applications and practical implementation tips. Quantitative 2D nuclear magnetic resonance (NMR) spectroscopy has emerged as an
Jérémy Marchand, Estelle Martineau, Jonathan Farjon, Patrick Giraudeau   +3 more
wiley   +1 more source

Challenges and Opportunities for Strengthening Bottom‐Tow Fisheries Sustainability

Fish and Fisheries, Volume 27, Issue 4, Page 987-1005, July 2026.
ABSTRACT Bottom‐tow gear fisheries (trawls and dredges) produce ~24 million mt of harvest annually, representing a globally important animal‐sourced food system. While many are currently sustainably managed, growing concern over the potential for ecosystem impacts from bottom‐tow gears has increased pressure to improve these fisheries.
Suresh A. Sethi, Robert D. Murphy Jr., Matthew R. Baker, Anita C. Kroska, Haraldur A. Einarsson, Owen S. Hamel, Shelton J. Harley, Pingguo He, James Ianelli, Stan Kotwicki, Robert A. McConnaughey, Chris McGonigle, Max V. Mossler, Brent Paine, Felipe Restrepo, Leslie A. Roberson, Craig S. Rose, Maritza S. Saldarriaga, Marija Sciberras, T. Scott Smeltz, Petri Suuronen, Mary Beth Tooley, William Tweit, Sarah R. Webster, Chris Wilcox, Qiang Wu, Noëlle Yochum, Ray Hilborn, Bradley P. Harris   +28 more
wiley   +1 more source

A Stochastic Method for Optimizing Portfolios Using a Combined Monte Carlo and Markowitz Model: Approach on Python

ECONOMICS
The main of the study is to comprehend how the mean variance efficient frontier method may be used in conjunction with Markowitz portfolio theory to produce an optimal portfolio.
Mallieswari R., Palanisamy Varadharajan, Senthilnathan Arthi Thangavelu, Gurumurthy Suganya, Joshua Selvakumar J., Pachiyappan Sathish   +5 more
doaj   +1 more source

Long-Term Equity Performance in Poland – Searching for Answers with the Calendar-Time Portfolio Approach

Folia Oeconomica Stetinensia, 2019
Research background: The study examines the performance of companies that are going public with equity issuance (IPO) in Poland.
Lizińska Joanna, Czapiewski Leszek
doaj   +1 more source

Efficiency in the Global Prison System: A Systematic Literature Review and Bibliometric Analysis

Journal of Economic Surveys, Volume 40, Issue 3, Page 1446-1462, July 2026.
ABSTRACT This study systematizes the international literature on prison system efficiency, highlighting patterns and research gaps through a multidimensional framework. By situating efficiency within broader institutional, social, and rights‐based contexts, it examines how academic research has assessed carceral performance.
Leandro Moreira, Enzo Barberio Mariano, Diogo Ferraz   +2 more
wiley   +1 more source

Optimizing Financial Data Analysis: A Comparative Study of Preprocessing Techniques for Regression Modeling of Apple Inc.’S Net Income and Stock Prices

Studia Universitatis Vasile Goldis Arad, Seria Stiinte Economice
This article presents a comprehensive methodology for processing financial datasets of Apple Inc., encompassing quarterly income and daily stock prices, spanning from March 31, 2009, to December 31, 2023.
Ungar Kevin, Oprean-Stan Camelia
doaj   +1 more source

G14 [PDF]

Arthropod Management Tests, 2012
P. J. Vittum, L. J. Brocklesby
openaire   +1 more source

Utilization of Free and Esterified Gholesterol-4-G14 for Corticoid Biosynthesis by Hog Adrenal Homogenates.

Experimental Biology and Medicine, 1962
SummaryTracer amounts of cholesterol-4-C14 added to hog adrenal homogenates and incubated under conditions favorable for steroid synthesis were rapidly and efficiently converted to labeled steroids. Addition of cholesterol-4-C14 esters, prepared enzymatically and incubated under the same conditions, did not give C14-activity in the steroids produced ...
R. E. Dailey, L. Swell, C. R. Treadwell
openaire   +1 more source

The Impact of the Size of Funds on the Use of Selectivity and Market Timing by Investment Funds

Folia Oeconomica Stetinensia
Investment funds are an important part of the capital market. Household savings in this type of asset are increasing every year. From an investor’s point of view, the performance of funds is important.
Żebrowska-Suchodolska Dorota
doaj   +1 more source

Eurusd Intraday Price Reversal

Folia Oeconomica Stetinensia, 2014
The study investigates the mean reversion in 1-minute EURUSD. Intraday patters in FX seem of particular interest as more and more trades in the FX market are automated high frequency trades (HFT).
Wiśniewska Marta
doaj   +1 more source