Results 91 to 100 of about 82,567 (211)

Dissecting the Chemical and Thermal Stabilities of Tetrads in G‐Quadruplexes to Derive a Structure‐Activity Relation for a Thrombin‐Binding DNA G‐Quadruplex Aptamer

open access: yesChemBioChem, Volume 27, Issue 8, April 2026.
Extended variants of the G‐quadruplex thrombin binding aptamer exhibit differential anticoagulation activities. We show that 3’ terminal extensions increase nuclease resistance, while variations in thermal stability directly impact activity. Hydrogen exchange nuclear magnetic resonance spectroscopy (NMR) report on thermodynamic properties of the base ...
Julia Wirmer‐Bartoschek   +3 more
wiley   +1 more source

On the Origins and Applications of the Cybernetic Steady-State Model as Systems-Theoretical Reference Model

open access: yesSystems
Few publications have elaborated on the steady-state model, a ‘cybernetic model’ that should not be confused with its namesake in mathematical systems; it is rooted in preceding publications about general systems theories, something that is explored in ...
Rob Dekkers
doaj   +1 more source

Measuring Dynamics of Risk and Performance of Sector Indices on Zagreb Stock Exchange

open access: yesCroatian Review of Economic, Business and Social Statistics, 2015
Investors are interested in sector diversification on stock markets among other important portfolio topics. This paper looks at five sector indices on Croatian capital market as an example of a small, relatively illiquid market.
Škrinjarić Tihana
doaj   +1 more source

Poisson-Nernst-Planck equations with steric effects - non-convexity and multiple stationary solutions

open access: yes, 2017
We study the existence and stability of stationary solutions of Poisson-Nernst- Planck equations with steric effects (PNP-steric equations) with two counter-charged species.
Gavish, Nir
core   +1 more source

Time‐Varying Gravity Constraints on Groundwater Recharge and Managed Aquifer Strategies in Southern Taiwan

open access: yesWater Resources Research, Volume 62, Issue 4, April 2026.
Abstract Understanding groundwater recharge pathways is essential for designing effective managed aquifer strategies, yet in heterogeneous alluvial aquifers, these pathways are often uncertain and difficult to resolve with sparse well networks. We apply gravity as an independent constraint to quantify groundwater storage dynamics and evaluate recharge ...
Kuan‐Hung Chen   +6 more
wiley   +1 more source

Application of semi-deviation as a proxy for the expected return estimation in the Croatian equity market

open access: yesCroatian Review of Economic, Business and Social Statistics, 2019
In the field of portfolio management the focus has been on the out-of-sample estimation of the covariance matrix mainly because the estimation of expected return is much more challenging.
Dolinar Denis   +2 more
doaj   +1 more source

Hydrodynamics in 1+1 dimensions with gravitational anomalies

open access: yes, 2012
The constraints imposed on hydrodynamics by the structure of gauge and gravitational anomalies are studied in two dimensions. By explicit integration of the consistent gravitational anomaly, we derive the equilibrium partition function at second ...
DE Kharzeev   +10 more
core   +1 more source

Achieving Portfolio Diversification through Cryptocurrencies in European Markets

open access: yesBusiness Systems Research, 2019
Background: Cryptocurrencies represent a specific technological innovation in financial markets that keeps getting more and more popular among investors around the world. Given the specific characteristics of the cryptocurrencies, this paper examines the
Pavković Ana   +2 more
doaj   +1 more source

Stock market development and investment growth in Nigeria

open access: yesJournal of Economics and Management, 2020
Aim/purpose – The poor investment climate is one of the reasons advanced for the slow pace of growth in Nigeria; evidenced by the absence or inadequate amount of investible funds in the productive sectors.
Onisanwa Idowu Daniel   +1 more
doaj   +1 more source

A mean value theorem for the square of class number times regulator of quadratic extensions [PDF]

open access: yes, 2005
Let $k$ be a number field. In this paper, we give a formula for the mean value of the square of class numbers times regulators for certain families of quadratic extensions of $k$ characterized by finitely many local conditions.
Taniguchi, Takashi
core   +2 more sources

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