Results 31 to 40 of about 130,870 (299)

Synthesis, Characterisation, Crystal Structure, DFT, and Hirshfeld Surface Study of a Slightly Distorted Tetrahedral Zn(II) Complex Based on Triphenylphosphanol [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering
An intriguing novel complex, [ZnCl2(Ph3POH)2], containing two equivalents of triphenylphosphanol (Ph3POH), was synthesized by reacting anhydrous ZnCl2 with triphenylphosphine in methanol, yielding a dichlorobis(triphenylphosphanol)-zinc(II) complex with ...
Karwan Ali, Nabil Fakhre, Salim Saber
doaj   +1 more source

Competition between Intra and Intermolecular Triel Bonds. Complexes between Naphthalene Derivatives and Neutral or Anionic Lewis Bases

open access: yesMolecules, 2020
: A TrF2 group (Tr = B, Al, Ga, In, Tl) is placed on one of the α positions of naphthalene, and its ability to engage in a triel bond (TrB) with a weak (NCH) and strong (NC−) nucleophile is assessed by ab initio calculations.
Wiktor Zierkiewicz   +2 more
doaj   +1 more source

Predictive value of motor-evoked potentials for motor recovery in patients with hemiparesis secondary to acute ischemic stroke

open access: yesAnnals of Medicine, 2023
Background Motor recovery following a stroke is related to the initial stroke severity and corticospinal tract integrity. One of the outcomes representing corticospinal tract integrity is the motor evoked potential (MEP).
Cheng-Chang Yen   +3 more
doaj   +1 more source

Entropy production and multiple equilibria: the case of the ice-albedo feedback [PDF]

open access: yes, 2010
Nonlinear feedbacks in the Earth System provide mechanisms that can prove very useful in understanding complex dynamics with relatively simple concepts. For example, the temperature and the ice cover of the planet are linked in a positive feedback which ...
Dubrulle, Bérengère   +2 more
core   +5 more sources

7,7\'-Bis[(aza-18-crown-6)carbonyl]thioindigo: Synthesis, Experimental, Theoretical Characterization and Biological Activities

open access: yesMedicine Science, 2013
This work presents the characterization of 7,7\'-Bis[(aza-18-crown-6)carbonyl]thioindigo (I) by quantum chemical calculations and spectral techniques. The molecular geometry, frontier molecular orbitals (FMO), molecular electrostatic potentials (MEP) and
Metin Koparir
doaj   +1 more source

Experimental Studies and DFT Calculations of a Novel Molecule Having Thieno[3,2-b]thiophene Fragment

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2020
A novel molecule of thieno[3,2-b]thiophene-2,5-diylbis[N-(4-chlorophenyl)methanimine] (TTBM) was synthesized using thieno[3,2-b]thiophene fragment, and characterized using UV-Vis, FTIR, 1H NMR and LC-MS spectroscopy.
Çiğdem Yörür Göreci
doaj   +1 more source

Simultaneous Contralateral Vestibular Schwannoma and Middle Ear Paraganglioma Tumor [PDF]

open access: yes, 2017
To the best of our knowledge, only 2 cases of a simultaneous contralateral vestibular schwannoma (VS) and middle ear paraganglioma (MEP) have previously been reported in literature.
Barbara, M   +6 more
core   +1 more source

Excitability of the motor cortex in patients with migraine changes with the time elapsed from the last attack [PDF]

open access: yes, 2017
BACKGROUND: Motor-evoked potentials (MEPs) produced by single-pulse transcranial magnetic stimulation (TMS) of the motor cortex can be an objective measure of cortical excitability.
COPPOLA, GIANLUCA   +6 more
core   +1 more source

Statistical analysis and comparison of 2T and 3T1D e-DRAM minimum energy operation [PDF]

open access: yes, 2016
Bio-medical wearable devices restricted to their small-capacity embedded-battery require energy-efficiency of the highest order. However, minimum-energy point (MEP) at sub-threshold voltages is unattainable with SRAM memory, which fails to hold below 0 ...
Amat Bertran, Esteve   +3 more
core   +3 more sources

De novo transcriptome sequencing in Bixa orellana to identify genes involved in methylerythritol phosphate, carotenoid and bixin biosynthesis. [PDF]

open access: yes, 2015
BackgroundBixin or annatto is a commercially important natural orange-red pigment derived from lycopene that is produced and stored in seeds of Bixa orellana L.
Aguilar-Espinosa, Margarita   +5 more
core   +3 more sources

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