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981
dyphAI dynamic pharmacophore modeling with AI: a tool for efficient screening of new acetylcholinesterase inhibitors
Published 2025-02-01“…Experimental results revealed that molecules, 4 (P-1894047), with its complex multi-ring structure and numerous hydrogen bond acceptors, and 7 (P-2652815), characterized by a flexible, polar framework with ten hydrogen bond donors and acceptors, exhibited IC₅₀ values lower than or equal to that of the control (galantamine), indicating potent inhibitory activity. …”
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982
Promising Directions in Chemical Processing of Methane from Coal Industry. Part 4. Long-term Stability Test
Published 2024-12-01“… For the processing of coal mine methane into hydrogen-containing gas, a catalytic process of methane tri-reforming was studied under long-term testing conditions (800 ᵒC, 100 h). …”
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983
Phase relations of bridgmanite, the most abundant mineral in the Earth’s lower mantle
Published 2025-02-01“…The incorporation of hydrogen and large cations like Ca is likely limited, although these issues are still debated. …”
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984
Growth on Alpha-Ketoglutarate Increases Oxidative Stress Resistance in the Yeast Saccharomyces cerevisiae
Published 2017-01-01“…Wild-type yeast cells grown on AKG were more resistant to hydrogen peroxide, menadione, and transition metal ions (Fe2+ and Cu2+) but not to ethanol and heat stress as compared with control ones. …”
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985
Design and Fabrication of Flexible Nanoantenna-Based Sensor Using Graphene-Coated Carbon Cloth
Published 2022-01-01“…Recently, nanodiamonds, graphene, and carbon nanotubes are served as electrodes, hydrogen storage elements, and composite materials. …”
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986
Kinetics and Mechanism of the Reaction between Chromium(III) and 2,3-Dihydroxybenzoic Acid in Weak Acidic Aqueous Solutions
Published 2010-01-01“…The positive value of ΔS≠ can be explained by the opening of a four-membered ring (positive entropy change) and the breaking of a hydrogen bond (positive entropy change) at the associative step of the replacement of the carboxyl group by the hydroxyl group at the chromium(III) center (negative entropy change in associative mechanisms). …”
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987
Reduction Behavior of Olanzapine and Its Differential Pulse Voltammetric Determination in Human Urine and Pharmaceuticals
Published 2020-12-01“…The number of transferred electrons was found equal to the number of the hydrogen ions taking part in the electrode reaction. …”
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988
A theoretical prediction for generating isolated attosecond pulse in water window utilizing instantaneous frequency change of two-color driving laser pulse
Published 2025-02-01“…Abstract This work reports on the theoretical generation of isolated soft-X ray 106 attosecond pulse within the water window spectral region, through interacting a chirped two-color femtosecond laser pulse with a hydrogen atom. To construct this pulse, a chirped 3.5 optical cycle (9.33 fs) laser pulse with a wavelength of 800 nm and an intensity of $$5\times {10}^{14}\frac{\text{W}}{{\text{cm}}^{2}}$$ is used as the main field. …”
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989
The edge of chaos is that where consciousness manifests itself through intermittent dynamics
Published 2024-01-01“…At such temperatures, only heavy ions, such as hydrogen ions (protons), can pass robustly through the water medium of the brain. …”
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990
Theoretical Investigation on the Solubilization in Water of Functionalized Single-Wall Carbon Nanotubes
Published 2012-01-01“…The SWCNT model used in the study consists of a finite, (5, 0) zigzag nanotube segment containing 60 C atoms with hydrogen atoms added to the dangling bonds of the perimeter carbons. …”
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991
Pharmacognostic evaluation of Lasimorpha senegalensis schott leaves (Araceae)
Published 2025-02-01“…The qualitative phytochemical test identified tannins, glycosides, alkaloids, terpenoids, phenols, and flavonoids, as well as trace amounts of steroids, saponins, and hydrogen cyanides. This study provided valuable insight into the pharmacognostic standardization of L. senegalensis leaves and can be used to create a monograph and prevent adulteration of this important leaf plant. …”
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992
The Redox Process in Red Blood Cells: Balancing Oxidants and Antioxidants
Published 2024-12-01“…Oxyhemoglobin autoxidation is the primary source of endogenous RBC oxidant production, which produces superoxide radicals and hydrogen peroxide. Potent exogenous oxidants from other blood cells and the surrounding endothelium can also enter RBCs. …”
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993
Carbon Nanofoam by Pulsed Electric Arc Discharges
Published 2018-01-01“…The synthesis was carried out in a controlled atmosphere at 200 torr of hydrogen pressure. The pulsed electric arc discharge was established between two graphite electrodes with 22.8 kVA of power and 150 A DC current; the cathode was relatively motionless and was made of a pure carbon rod of 6 mm diameter, and the spinner anode was a pure carbon disc spinning at 600 rpm; over the disc was an annular cavity where the new catalytic mixture of 93.84/2.56/1.43/0.69/1.48 of C/Ni/Fe/Co/S molar fraction was deposited in a geometrically fixed way by 8 catalytic mixture blocks and 8 empty spaces, and the discharge frequency was 80 Hz. …”
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994
Determination of Anthracycline Drug Residual in Cleaning Validation Swabs of Stainless-Steel Equipment after Production of Cytostatic Injections Using HPLC Analytical Method
Published 2015-01-01“…The mobile phase consisted of lauryl hydrogen sulphate solution (3.7 g/L) : methanol : acetonitrile (54 : 16 : 30, v/v/v) with pH adjusted to 2.5 using phosphoric acid (85%). …”
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995
Quenching-Chemiluminescence Determination of Trace Amounts of l-Tyrosine Contained in Dietary Supplement by Chemiluminescence Reaction of an Iron-Phthalocyanine Complex
Published 2012-01-01“…The chemiluminescence (CL) signal immediately appeared when a hydrogen peroxide solution was injected into an iron-phthalocyanine tetrasulfonic acid (Fe-PTS) aqueous solution. …”
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996
Chemical Feature-Based Molecular Modeling of Urotensin-II Receptor Antagonists: Generation of Predictive Pharmacophore Model for Early Drug Discovery
Published 2014-01-01“…For a series of 35 piperazino-phthalimide and piperazino-isoindolinone based urotensin-II receptor (UT) antagonists, a thoroughly validated 3D pharmacophore model has been developed, consisting of four chemical features: one hydrogen bond acceptor lipid (HBA_L), one hydrophobe (HY), and two ring aromatic (RA). …”
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997
Preparation and Structural Properties of Free Films from Rapeseed Oil-Based Rigid Polyurethane-Montmorillonite Nanocomposites
Published 2013-01-01“…The Fourier transform infrared spectral analysis (FTIR-ATR) is used to determine the urethane group concentration and hydrogen bonds formation in PU and PU/OMMT nanocomposites. …”
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998
Absorbed Pb2+ and Cd2+ Ions in Water by Cross-Linked Starch Xanthate
Published 2017-01-01“…A cross-linked starch xanthate was prepared by graft copolymerization of acrylamide and sodium acrylate onto starch xanthate using potassium persulfate and sodium hydrogen sulfite initiating system and N,N′-methylenebisacrylamide as a cross-linker. …”
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999
Waste-Tire-Derived Activated Carbon as Efficient Adsorbent of P-Nitrophenol from Wastewater
Published 2022-01-01“…The adsorption process is in the form of chemisorption and is dominated by hydrogen bonding and π-πEDA formation, but the adsorption tends to be monolayer, and the adsorption behavior can be described by a proposed secondary model. …”
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1000
Molecular Modeling and Spectroscopic Studies on the Interaction of Transresveratrol with Bovine Serum Albumin
Published 2013-01-01“…The thermodynamic parameters ΔH and ΔS are estimated to be −21.82 kJ mol−1 and +21.15 J mol−1 K−1, which indicates that the interaction of TRES with BSA is driven mainly by hydrophobic forces and there are also hydrogen bonds and electrostatic interactions. The competitive experiments suggest that the binding site of TRES to BSA is probably located on site II. …”
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