Results 51 to 60 of about 18,304 (313)

Regulating Protein Immobilization During Cell‐Free Protein Synthesis in Hyaluronan Microgels

Advanced Biology, EarlyView.
Bifunctional microgels carrying a linear DNA template and Ni2+‐activated NTA moieties are used as platform for cell‐free protein synthesis and in situ protein immobilization. By varying the concentration of NTA moieties in the microgels, the amount of GFP‐His immobilized inside the microgel and released to the microgel environment can be regulated ...
Anika Kaufmann, Kateryna Ivanova, Julian Thiele   +2 more
wiley   +1 more source

Bayesian time‐varying autoregressive models of COVID‐19 epidemics

Biometrical Journal, Volume 65, Issue 1, January 2023., 2023
Abstract The COVID‐19 pandemic has highlighted the importance of reliable statistical models which, based on the available data, can provide accurate forecasts and impact analysis of alternative policy measures. Here we propose Bayesian time‐dependent Poisson autoregressive models that include time‐varying coefficients to estimate the effect of policy ...
Paolo Giudici, Barbara Tarantino, Arkaprava Roy   +2 more
wiley   +1 more source

Spray Deposition for Solvent Annealing of Hybrid Poly(3,4‐Ethylenedioxythiophene) Polystyrene Sulfonate Cellulose Silver Nanowire Composite Electrodes Using a Roll‐to‐Roll Coater

Advanced Engineering Materials, EarlyView.
The fabrication and post‐treatment via solvent annealing of poly(3,4‐ethylenedioxythiophene) polystyrene sulfonate‐based electrodes using spray deposition in a roll‐to‐roll setup are presented. The decrease in sheet resistance and its correlation with nanostructure and molecular structure in the electrodes as a function of the processing parameters is ...
Marie Betker, Benedikt Sochor, Elisabeth Erbes, Alisher Kurmanbay, Tim Erichlandwehr, Yanan Li, Peter Müller‐Buschbaum, Irene Fernandez‐Cuesta, Simone A. Techert, L. Daniel Söderberg, Stephan V. Roth   +10 more
wiley   +1 more source

Epipolythiodioxopiperazine‐Based Natural Products: Building Blocks, Biosynthesis and Biological Activities

ChemBioChem, Volume 23, Issue 23, December 5, 2022., 2022
Housing sulfur: Certain fungi produce diketopiperazine compounds with a transannular sulfur bridge. These so‐called epipolythiodioxopiperzines are toxic by non‐specifically interacting with intracellular proteins and contribute to fungal pathogenicity. Producer strains serve as bio‐pesticides but also question safety of food fermentation.
Eva M. Huber
wiley   +1 more source

Studying the effects of USING GARCH-EVT-COPULA METHOD TO ESTIMATE VALUE AT RISK OF PORTFOLIO [PDF]

Iranian Journal of Finance, 1999
Value at Risk (VaR) plays a central role in risk management. There are several approaches for the estimation of VaR, such as historical simulation, the variance-covariance and the Monte Carlo approaches. This work presents portfolio VaR using an approach
Ghodratollah Emamverdi
doaj   +1 more source

Financial Volatility Spillover in COVID-19 Pandemic Period: Evidence from the US and ASEAN Stock Market

Jurnal Keuangan dan Perbankan, 2022
A recession is part of the economic cycle that occurs in a certain period. This article investigates the effects of volatility spillover in the COVID-19 pandemic that occurred in 2020 using stock market index data from the US and ASEAN countries ...
Rifki Nurfaiz, Dony Abdul Chalid
doaj   +1 more source

GARCH and irregularly spaced data [PDF]

Economics Letters, 2006
An exact discretization of continuous time stochastic volatility processes observed at irregularly spaced times is used to give insights on how a coherent GARCH model can be specified for such data. The relation of our approach with those in the existing literature is studied.
Meddahi, Nour, Renault, Eric, Werker, Bas   +2 more
openaire   +5 more sources

Understanding the Role of Hydrogen and Oxygen in Electronic Phase Changes of Nickelates

Advanced Functional Materials, EarlyView.
The reversible exchange of hydrogen and oxygen in solids is key to their electronic and electro‐chemical functionality. A combination of methods is employed to study the interaction of hydrogen with a prototypical quantum material in a non‐destructive and time‐dependent manner.
Laura Guasco, Rebecca Pons, David Cortie, Lars J. Bannenberg, Peter Wochner, Eberhard Goering, Peter Nagel, Stefan Schuppler, Shohei Hayashida, Rotraut Merkle, Bernhard Keimer, Thomas Keller, Eva Benckiser   +12 more
wiley   +1 more source

Volatility Transmission of Barley World Price to the Domestic Market of Iran and the Role of Iran Mercantile Exchange; an Application of BEKK Model

New Medit, 2019
Barley is one of the main crops after wheat and rice. The importance of this product increases because it is an essential input in the livestock and poultry industries.
Behzad Fakari Sardahaie, Mohammad Mehdi Farsi Aliabadi, Mostafa Kojori   +2 more
doaj   +1 more source

Multivariate Normal Mixture GARCH [PDF]

SSRN Electronic Journal, 2006
We present a multivariate generalization of the mixed normal GARCH model proposed in Haas, Mittnik, and Paolella (2004a). Issues of parametrization and estimation are discussed. We derive conditions for covariance stationarity and the existence of the fourth moment, and provide expressions for the dynamic correlation structure of the process.
Markus Haas, Stefan Mittnik, Stefan Mittnik, Stefan Mittnik, Marc S. Paolella, Marc S. Paolella   +5 more
openaire   +4 more sources