Results 61 to 70 of about 678,742 (284)

Metal-insulator transitions in tetrahedral semiconductors under lattice change

, 2004
Although most insulators are expected to undergo insulator to metal transition on lattice compression, tetrahedral semiconductors Si, GaAs and InSb can become metallic on compression as well as by expansion.
Blaha P., DEEPAK KUMAR, Keldysh L. V., Kohn W., Mott N. F., NITYA NATH SHUKLA, RAJENDRA PRASAD, SHAILESH SHUKLA   +7 more
core   +1 more source

Virtual damping and Einstein relation in oscillators [PDF]

, 2003
This paper presents a new physical theory of oscillator phase noise. Built around the concept of phase diffusion, this work bridges the fundamental physics of noise and existing oscillator phase-noise theories.
Hajimiri, Ali, Ham, Donhee
core   +1 more source

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Stable Ultra-thin CdTe Crystal: A Robust Direct Gap Semiconductor [PDF]

, 2017
Employing density functional theory based calculations, we investigate structural, vibrational and strain-dependent electronic properties of an ultra-thin CdTe crystal structure that can be de- rived from its bulk counterpart. It is found that this ultra-
Akbali, Baris, Iyikanat, Fadil, Kang, Jun, Sahin, Hasan, Selamet, Yusuf, Senger, R. Tugrul   +5 more
core   +2 more sources

The compression theorem II: directed embeddings [PDF]

Geometry & Topology, 2001
Originally titled "Directed embeddings: a proof of Gromov's theorem", this paper has been rewritten as part II in a series of papers about the compression theorem. This version is published by Geometry and Topology at http://www.maths.warwick.ac.uk/gt/GTVol5/paper15.abs ...
Rourke, Colin, Sanderson, Brian
openaire   +3 more sources

Diversity and complexity in neural organoids

FEBS Letters, EarlyView.
Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley   +1 more source

HARQ Buffer Management: An Information-Theoretic View

, 2015
A key practical constraint on the design of Hybrid automatic repeat request (HARQ) schemes is the size of the on-chip buffer that is available at the receiver to store previously received packets. In fact, in modern wireless standards such as LTE and LTE-
Kang, Joonhyuk, Lee, Wonju, Popovski, Petar, Rangan, Sundeep, Simeone, Osvaldo   +4 more
core   +1 more source

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

FEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas, Porter L. Tomsick, Alicia M. Pickrell, Paul D. Morton   +3 more
wiley   +1 more source

Utilization and Evaluation of Rice Bran and Rice Bran Wax as a Tablet Lubricant

Pharmaceutics
The rice bran and rice bran wax of the KJ CMU107 rice strain were investigated as potential tablet lubricants in a directly compressed tablet formulation. Stabilized full-fatted rice bran (sFFRB), stabilized defatted rice bran (sDFRB), and rice bran wax (
Ornanong S. Kittipongpatana, Karnkamol Trisopon, Phanphen Wattanaarsakit, Nisit Kittipongpatana   +3 more
doaj   +1 more source

Impact of Compressional Force, Croscarmellose Sodium, and Microcrystalline Cellulose on Black Pepper Extract Tablet Properties Based on Design of Experiments Approach

Scientia Pharmaceutica, 2023
This study aimed to prepare tablets of black pepper extract using the Design of Experiments (DOE) approach. The levels of three factors—compressional force, croscarmellose sodium (CCS), and microcrystalline cellulose (MCC)—were screened using the one ...
Chaowalit Monton, Thaniya Wunnakup, Jirapornchai Suksaeree, Laksana Charoenchai, Natawat Chankana   +4 more
doaj   +1 more source