Results 51 to 60 of about 7,285,451 (331)

Laser wakefield and direct acceleration in the plasma bubble regime [PDF]

open access: yes, 2018
Laser wakefield acceleration (LWFA) and direct laser acceleration (DLA) are two different kinds of laser plasma electron acceleration mechanisms. LWFA relies on the laser-driven plasma wave to accelerate electrons.
Zhang, Xi, Ph. D.
core   +1 more source

A stepwise emergence of evolution in the RNA world

open access: yesFEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

Die ersten 1000: Computational Thinking als obligatorische Ausbildung für Primarschullehrpersonen in der Schweiz

open access: yesMedienPädagogik: Zeitschrift für Theorie und Praxis der Medienbildung, 2020
Die Umsetzung des Lehrplans 21, der mit dem Modul «Medien und Informatik» informatische Bildung (IB) in die Schweizer Primarschulen bringen wird, wirft wichtige Fragen auf: Insbesondere fragt sich, wie die Umsetzung gegen die bei vielen ...
Alexander Repenning   +2 more
doaj   +1 more source

On a weak solution of Einstein equations for expanding dust

open access: yes, 2011
An expanding spherically symmetric dust cloud is considered in a framework of general relativity. Initial conditions leading to a shell-crossing singularity are chosen. The way to construct a weak solution for such a case is proposed.
Tegai, Sergey Ph.
core   +1 more source

The thioredoxin‐like and one glutaredoxin domain are required to rescue the iron‐starvation phenotype of HeLa GLRX3 knock out cells

open access: yesFEBS Letters, EarlyView.
Glutaredoxin (Grx) 3 proteins contain a thioredoxin domain and one to three class II Grx domains. These proteins play a crucial role in iron homeostasis in eukaryotic cells. In human Grx3, at least one of the two Grx domains, together with the thioredoxin domain, is essential for its function in iron metabolism.
Laura Magdalena Jordt   +4 more
wiley   +1 more source

The Study and Comparison of Family Performance and Psychological Profile of Students in Martyred Families with Remarried and Non–remarried Mothers. [PDF]

open access: yesفصلنامه نوآوری‌های آموزشی, 2005
Three–hundred and seventy–three male and female students from martyred families attending high schools for martyred families were selected by using cluster sampling in four provinces of Tehran, Kermanshah, Ardebil and Chahar Mahal and Bakhtiari.
Hadi Keramati   +2 more
doaj  

Distributions of dirac operator eigenvalues [PDF]

open access: yes, 2003
The distribution of individual Dirac eigenvalues is derived by relating them to the density and higher eigenvalue correlation functions. The relations are general and hold for any gauge theory coupled to fermions under certain conditions which are stated.
Akemann, G, Damgaard, PH
core   +3 more sources

Disruption of SETD3‐mediated histidine‐73 methylation by the BWCFF‐associated β‐actin G74S mutation

open access: yesFEBS Letters, EarlyView.
The β‐actin G74S mutation causes altered interaction of actin with SETD3, reducing histidine‐73 methylation efficiency and forming two distinct actin variants. The variable ratio of these variants across cell types and developmental stages contributes to tissue‐specific phenotypical changes. This imbalance may impair actin dynamics and mechanosensitive
Anja Marquardt   +8 more
wiley   +1 more source

PENGEMBANGAN SMK MODEL UNTUK MASA DEPAN

open access: yesCakrawala Pendidikan: Jurnal Ilmiah Pendidikan, 2013
Abstrak: Praktik penyelenggaraan SMK di Indonesia saat ini menunjukkan kelemahan-kelemahan sebagai berikut: menyelenggarakan fungsi tunggal, yaitu menyiapkan siswa untuk bekerja, untuk menjadi karyawan, dan kurang menyiapkan untuk menjadi wirausahawan ...
Slamet PH PH
doaj   +1 more source

Purification tags markedly affect self‐aggregation of CPEB3

open access: yesFEBS Letters, EarlyView.
Although recombinant proteins are used to study protein aggregation in vitro, uncleaved tags can interfere with accurate interpretation. Our findings demonstrate that His₆‐GFP and His₁₂ tags significantly affect liquid droplet and amyloid fibril formation in the intrinsically disordered region (IDR) of mouse cytoplasmic polyadenylation element‐binding ...
Harunobu Saito   +6 more
wiley   +1 more source

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