Results 51 to 60 of about 8,356 (228)

Introduzindo a ideia de séries numéricas nos ensinos fundamental e médio [PDF]

, 2020
This work presents some ideas of problems and activities that may be help elementary and high school teachers to exhibit concepts and theories of numerical series, as well as ideas of convergence, divergence and perception of the infinite. Through simple
Clarimundo, Luciano José
core  

Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies

Advanced Functional Materials, EarlyView.
The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley   +1 more source

Some Theorems on Cesaro Regular Summability Method for Sequences and Series

, 1969
One of the most interesting discussions in Analysis is that of sequences and series. Ernesto Cesaro (1859 - 1906) did some interesting work on this topic in Analysis, sequences and series.
Neal, Wendell
core  

Interplay Between Phase Evolution, Fe Migration, and Oxygen Redox in O3‐Type NaxFeyMn1−yO2 Cathodes

Advanced Functional Materials, EarlyView.
Why do Na‐ion battery cathodes, that are compositionally closely related, follow different structural paths during battery operation? This work shows how Fe content controls when iron atoms migrate from their original sites. Early migration locks the layers and blocks key phase transitions, whereas delayed migration permits fuller structural ...
Morten Johansen, Maria Schou Hansen, Josephine Dunker, Rebekka Klemmt, Dorthe B. Ravnsbæk   +4 more
wiley   +1 more source

Distribution, phylogeography and hybridization between two parapatric sibling ant species of the genus Temnothorax

, 2007
The present-day range distribution of many species has been influenced by re-occuring glacials of the past. By the retreat into different refugia situated in more southerly regions, species were geographically separated and sometimes diverged into ...
Pusch, Katja
core   +1 more source

3D Printing Innovations in Polymeric Porous and Patterned Architecture

Advanced Functional Materials, EarlyView.
Polymeric foams occupy a unique structural space between dense solids and open networks, where engineered void fraction governs mechanical compliance, thermal resistance, and mass transport. Additive manufacturing now enables precise spatial control over cellular architecture, unlocking designer foam structures across applications spanning crash ...
Dhanush Patil, Sri Vaishnavi Thummalapalli, Clarissa Westover, Arunachalam Ramanathan, M. Taylor Sobzcak, Roumika Patil, Qixuan Xiang, Tiantian Li, Sui Yang, Timothy E. Long, Hongyue Sun, Xianqiao Wang, Yang Liu, Kenan Song   +13 more
wiley   +1 more source

Glissile Interphase Boundaries Enable Collective Phase Switching in Epitaxial Polar Oxides

Advanced Functional Materials, EarlyView.
A triple point is identified in the phase diagram of low‐symmetry epitaxial BiFeO3 thin film along with an extended regime of phase competition associated with a flattened energy landscape. The electromechanical response is shown to be governed by correlated interphase‐boundary motion, including scale‐free avalanche dynamics characteristic of systems ...
Mohammad Moein Seyfouri, Oliver Paull, Ralph Bulanadi, Yasuhiro Sakamoto, Shintaro Yasui, Mikayla Lord, Mahak Chhabra, David Walker, Patrycja Paruch, Shery Chang, Nagarajan Valanoor, Daniel Sando   +11 more
wiley   +1 more source

The analysis of the relationship between domestic and silvatic populations of Rhodnius prolixus\robustus (Hemiptera : Reduviidae) in Venezuela by geometric morphometric and molecular methods [PDF]

Despite four decades of control of Chagas disease in Venezuela, domestic infestations still persist and transmission of Trypanosoma cruzi may be increasing.
Fitzpatrick, Sinead Orla
core   +1 more source

Chiral Phase Change Nanomaterials

Advanced Functional Materials, EarlyView.
This work demonstrates reversible, non‐volatile phase transitions in chiral Ge2${\rm Ge}_2$Sb2${\rm Sb}_2$Te5${\rm Te}_5$ (GST) nanohelices for high‐speed optical modulation of chirality and dynamic control of the state of polarization (SOP). The chiral nanostructures are fabricated using a highly directional, wafer‐scale physical vapor deposition ...
Joshua A. Burrow, Md Shah Alam, Riad Yahiaoui, Evan M. Smith, Ryan Laing, Jules Gardener, Thomas A. Searles, Piyush J. Shah, Shivashankar Vangala, Joshua R. Hendrickson, Andrew M. Sarangan, Imad Agha   +11 more
wiley   +1 more source

Banach and statistical cores of bounded sequences [PDF]

, 2004
summary:In this paper, we are mainly concerned with characterizing matrices that map every bounded sequence into one whose Banach core is a subset of the statistical core of the original ...
Yardimci, Ş., Lahiri, B. K., Orhan, C., Duman, O., Das, Pratulananda   +4 more
core   +1 more source