Results 71 to 80 of about 910,172 (275)

Electrochemistry and spectroelectrochemistry of iron porphyrins in the presence of nitrite [PDF]

, 2001
The reaction of nitrite with ferric and ferrous porphyrins was examined using visible, infrared and NMR spectroscopy. Solutions of either ferric or ferrous porphyrin were stable in the presence of nitrite, with only complexation reactions being observed.
Ryan, Michael D., Wei, Zhongcheng
core   +1 more source

Contributions of arid climate and hydrothermal fluid flow on sedimentation in saline‐alkaline lakes: Insight from the Ibar intramontane basin (Southern Serbia)

The Depositional Record, EarlyView.
The article demonstrates that brine was central for the supply of Ca and B to the studied saline lake. The ion transport occurred probably by thermal springs, while contributions from surface waters cannot be excluded. However, the saturation and syndepositional precipitation of Ca borates were initiated by an arid climate through evaporation, while ...
Nevena Andrić‐Tomašević, Benjamin F. Walter, Vladimir Simić, Mohsin Raza, Dragana Životić, Željana Novković, Jochen Kolb, Axel Gerdes, Aratz Beranoaguirre   +8 more
wiley   +1 more source

An Eco‐Friendly and Sensitive Microwave‐Aided Spectrofluorophotometric Characterization of Mirabegron‐Loaded Nanocarriers by Amalgamation of Design of Experiments and White Analytical Chemistry

Luminescence
ABSTRACTMirabegron, a drug for treatment of overactive bladder, has low water solubility and bioavailability. Researchers used quality by design to develop and characterize second‐generation lipid nanocarriers for mirabegron, aiming to provide spatially and temporally sustained drug release. Numerous analytical methodologies for assessing mirabegron in
Pintu Prajapati, Krishna Patel, Pranav Shah, Vilas Surana, Anzarul Haque, Mohd Abul Kalam, Shailesh Shah   +6 more
openaire   +4 more sources

Electrochemistry and Spectroscopy of Sulfate and Thiosulfate Complexes of Iron Porphyrins [PDF]

, 2002
The electrochemical and spectroscopic properties of the complex formed by the addition of thiosulfate to ferric porphyrins were examined. The NMR spectrum of the thiosulfate–ferric porphyrin complex was consistent with a high-spin ferric complex, while ...
Crawford, Philip Walter, Ryan, Michael D.   +1 more
core   +1 more source

On the feasibility of N2 fixation via a single-site FeI/FeIV cycle: Spectroscopic studies of FeI(N2)FeI, FeIV=N, and related species [PDF]

, 2006
The electronic properties of an unusually redox-rich iron system, [PhBPR 3]FeNx (where [PhBPR 3] is [PhB(CH2PR2)3]−), are explored by Mössbauer, EPR, magnetization, and density-functional methods to gain a detailed picture regarding their oxidation ...
Barney, Barney, Betley, Betley, Betley, Brown, Brown, Brown, Burgess, C. C. Lu, Daida, Dance, Eady, Grapperhaus, Hinnemann, Howard, Huniar, Igarashi, J. C. Peters, Jenkins, K  stner, Lee, M. P. Hendrich, M. P. Mehn, M. T. Green, MacKay, Neese, R. K. Behan, Stoian, Stoian, T. A. Betley, Vrajmasu, W. Gunderson, Yandulov, Yandulov, Yandulov, Yang, Zhang   +37 more
core   +2 more sources

The Cenomanian–Turonian boundary interval in the Western Canada Foreland Basin: Stratigraphy, geochemistry, geochronology and sea‐level changes recorded in expanded and condensed clastic successions

The Depositional Record, EarlyView.
Shallow‐marine mudstone of the Cretaceous Kaskapau Formation in the British Columbia foredeep preserves a 185 m thick record of OAE2. The organic carbon‐isotope and osmium‐isotope excursions can be correlated in detail with other Cenomanian–Turonian boundary sections around the world.
A. Guy Plint, Darren R. Gröcke, David Selby, Ireneusz Walaszczyk, Sandra L. Kamo, Ian Jarvis, João Trabucho‐Alexandre, Jessica Flynn, Frederick J. Longstaffe, Kienan P. Marion, Bogdan L. Varban, Alice D. C. Du Vivier, David Uličný   +12 more
wiley   +1 more source

Ichnological discrimination of hemipelagic‐dominated slope versus basin‐floor mudstones: Insights from early Viséan successions of a distally steepened ramp, northern Iran

The Depositional Record, EarlyView.
This study integrates sedimentological and ichnological data to reveal the depositional processes and environmental conditions of deep‐water muddy gravity flows in the Mobarak Formation. It highlights distinct ichnocoenoses and bioturbation patterns, offering insights into basin‐floor versus slope mudstones and their implications for hydrocarbon ...
Aram Bayet‐Goll, Mahmoud Sharafi, Mehdi Daraei   +2 more
wiley   +1 more source

Biology and Management of Male‐Bodied Athletes in Elite Female Sports

Drug Testing and Analysis, EarlyView.
Graphical representation of the relationships of transgender and XY DSDF as male‐bodied athletes along the binary dimensions of biological sex. ABSTRACT The physical advantages in elite power sports that allow men to surpass women are derived from the experience of male puberty.
David J. Handelsman, Stéphane Bermon
wiley   +1 more source

Ferrocene and Ferrocenium Modified Clays and Their Styrene and EVA Composites [PDF]

, 2007
In this work, ferrocene- and ferrocenium-containing salts were employed to modify montmorillonite. X-ray measurements show an increase in the interlayer spacing upon clay modification, which means that the larger and more organophilic cations were ...
Manzi-Nshuti, Charles, Wilkie, Charles A.   +1 more
core   +1 more source

Insights Into the Light‐Driven Conversion of Methane: Mechanisms, Characterization, and Perspective

EcoEnergy, EarlyView.
Methane can be converted into value‐added products, offering a sustainable and economically viable approach to energy and carbon use. Photocatalytic methane conversion under mild conditions is an effective method for activating methane. This review outlines key mechanisms for C–H bond activation, categorizes products from methane conversion, and ...
Jiayi Chen, Shiqin Gao, Tao Gan, Bolun Wang   +3 more
wiley   +1 more source