Results 41 to 50 of about 255 (115)

A new, ~4500‐year varve record and high‐resolution tephrochronology from lake Hämälänlampi, eastern Finland, provides age constraints for the Furnas C and the Glen Garry/Askja A‐2000 eruptions

open access: yesJournal of Quaternary Science, Volume 41, Issue 5, Page 837-854, July 2026.
ABSTRACT The northern European distal cryptotephra framework is constantly developing both in terms of identification of new tephra horizons and improved age constraints for the already well‐established tephra marker horizons. However, many prehistoric tephra layers have only been dated by the radiocarbon method, with its inherent problems.
Maarit Kalliokoski   +2 more
wiley   +1 more source

Shaft Voltage Mechanism of AFPM Motors: Novel Parasitic Capacitance Derivation and Equivalent Circuit Modeling

open access: yesIEEE Access
Space Vector Pulse Width Modulation (SVPWM) is widely utilized in modern motor drive systems due to its superior DC-link voltage utilization, reduced harmonic distortion, and lower torque ripple compared to conventional sinusoidal PWM methods.
Byoung-Wook Jo, Dae-Hyeon Kim, Jin Hur
doaj   +1 more source

Effect of Substandard Aspen Wood Addition During Bisulfite Cooking on Pulp Characteristics and Yield

open access: yesЛесной журнал
The European part of Russia is dominated by mixed coniferous and deciduous forests. The use of soft-leaved species for pulp production makes it possible to fill the shortage of available forest wood resources, and in recent decades there has been an ...
Anna A. Krasikova   +5 more
doaj   +1 more source

Numerical Modelling of Corrugated Paperboard Boxes

open access: yesMathematical and Computational Applications
Numerical modelling of corrugated paperboard is quite challenging due to its waved geometry and material non-linearity which is affected by the material properties of the individual paper sheets.
Rhoda Ngira Aduke   +2 more
doaj   +1 more source

EVALUATION OF PULP AND PAPER MAKING CHARACTERISTICS OF RICE STEM FIBERS PREPARED BY TWIN-SCREW EXTRUDER PULPING

open access: yesBioResources, 2010
Twin-screw extrusion pulping is a new approach to the manufacture of pulp for paper production, designed for non-wood feedstocks. In this research, the production of pulp from rice stem with a newly fabricated twin-screw extruder was investigated ...
Alireza Talebizadeh   +1 more
doaj  

Optimal Design of Double-Walled Corrugated Board Packaging. [PDF]

open access: yesMaterials (Basel), 2022
Mrówczyński D   +2 more
europepmc   +1 more source

Home - About - Disclaimer - Privacy