Results 81 to 90 of about 245,865 (298)

Polsko-niemiecka wymiana handlowa produktami rolno spożywczymi

open access: yesZeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego, 2017
Celem opracowania jest przedstawienie zmian wielkości i struktury wymiany handlowej produktami rolno-spożywczymi Polski z Niemcami w latach 2003 – 2015.
Anna Kowalska
doaj   +1 more source

A Spatially Resolved View on the Aging Substantia nigra: An Exploratory Proteomic Study

open access: yesAdvanced Biology, EarlyView.
Although aging is the most important risk factor for several neurodegenerative diseases, the molecular effects of physiological aging are still understudied. By applying spatially‐resolved proteomic analyses of the human substantia nigra pars compacta, alterations in vesicular trafficking and mitochondrial proteins are observed, as well as reduced ...
Britta Eggers   +10 more
wiley   +1 more source

Crowdfunding innovative but risky new ventures: the importance of less ambiguous tone

open access: yesFinancial Innovation
Crowdfunding provides a novel and potential way for innovative but risky new ventures to fund their new product development (NPD) projects. To help potential investors evaluate the projects and enhance the credibility of disclosure, founders are ...
Ye Liu, Ke Zhang, Weili Xue, Ziyu Zhou
doaj   +1 more source

Tendencje na rynku mięsa drobiowego na świecie i w Polsce w latach 2000-2016

open access: yesZeszyty Naukowe Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie. Problemy Rolnictwa Światowego, 2017
Opracowanie przedstawia zmiany na rynku mięsa drobiowego na świecie w latach 2000 2016. Przedstawiono zmiany produkcji, konsumpcji, handlu zagranicznego oraz cen ogółem oraz u największych producentów i konsumentów, a także eksporterów i importerów oraz ...
Stanisław Stańko, Aneta Mikuła
doaj   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian   +4 more
wiley   +1 more source

The Importance of Prions

open access: yesPLoS Pathogens, 2013
While agent host-range and strain properties convinced early researchers of a viral etiology, the once unorthodox postulate that prion transmission occurs by conformational corruption of host-encoded cellular prion protein (PrPC) by a pathogenic isoform (PrPSc) is now widely accepted. Indeed, conformational templating is increasingly understood to be a
openaire   +5 more sources

Importance tempering

open access: yesStatistics and Computing, 2008
Simulated tempering (ST) is an established Markov chain Monte Carlo (MCMC) method for sampling from a multimodal density $ ( )$. Typically, ST involves introducing an auxiliary variable $k$ taking values in a finite subset of $[0,1]$ and indexing a set of tempered distributions, say $ _k( ) \propto ( )^k$.
Ruth King   +2 more
openaire   +3 more sources

Energy Dissipation in Nonlinearly Elastic Auxetic and Non‐Auxetic Mechanical Metamaterials with Friction and Material Damping

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a hyperelastic mechanical metamaterial for elastic energy dissipation. Energy is dissipated within its unit cells by friction assisted by material damping. Frictional contact is enhanced when using auxetic unit cells. The load–displacement plot for one compression cycle shows a pronounced hysteresis loop, indicating that a large ...
Eunhyeuk Jeong   +2 more
wiley   +1 more source

Multimodal Characterization Method for Metamaterials with Tunable Mechanical Stiffness and Electrical Resistivity

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a multimodal characterization method for a prototype metamaterial model structure that features four distinct states of mechanical stiffness and electrical resistivity. Through simulations and experiments, it uncovers insights into the structural behavior, the correlation between changes in electrical resistivity and mechanical ...
Rebecca Kose   +3 more
wiley   +1 more source

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