Results 121 to 130 of about 736,654 (353)

Gram‐Scale Photocatalysis with a Stable and Recyclable Chromium(III) Photocatalyst in Acetonitrile and in Water

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
Abstract The use of stable photosensitizers made on a multigram‐scale from cheap and available starting materials offers an extraordinary opportunity to translate small‐scale proof‐of‐concept photoreactions to widespread applications in non‐specialized laboratories, thereby promoting the implementation of light‐driven syntheses.
Steven Sittel   +5 more
wiley   +1 more source

Development of Photo‐Biocatalytic Redox System for Asymmetric Synthesis of Optically Active Amines Using Blue Light and Transaminases. A Case Study Toward Mavacamten

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
Abstract α‐Chiral amines are versatile building blocks for the asymmetric synthesis of optically pure high‐added‐value chemicals, including pharmaceuticals, agrochemicals, and natural products. Herein, we report a one‐pot, two‐step sequential deracemization of racemic sec‐alcohols to optically enriched primary amines throught a photo‐biocatalytic ...
Natalia Antos   +5 more
wiley   +1 more source

Antibacterial Effect of Fixed and Volatile Oils against Gram-positive and Gram-negative Bacteria

open access: yesKurdistan Journal of Applied Research, 2019
Antibiotic resistance phenomena among pathogenic bacteria considered as a major health problem ?and associated with increased mortality or long-term hospitalization, which lead to open a new era by using ?plant and herbal extracts as an alternative ...
Tara Faiq M. Salih   +3 more
doaj   +1 more source

Forecasting crude oil market volatility: can the Regime Switching GARCH model beat the single-regime GARCH models? [PDF]

open access: yesarXiv, 2015
In order to obtain a reasonable and reliable forecast method for crude oil price volatility, this paper evaluates the forecast performance of single-regime GARCH models (including the standard linear GARCH model and the nonlinear GJR-GARCH and EGARCH models) and the two-regime Markov Regime Switching GARCH (MRS-GARCH) model for crude oil price ...
arxiv  

Ammonia Dynamics in the Human Body: Insights in Biomedical Sensing Technologies

open access: yesAdvanced Sensor Research, EarlyView.
Ammonia (NH3) is a significant biomarker in diagnostics, affecting the respiratory system, stomach, liver, kidneys, bladder, and gastrointestinal tract. NH3 detection, using sensors, has the potential to improve medical diagnosis. This review examines recent advancements in NH3 sensing technologies and explores future research directions, including ...
Annelot Nijkoops   +8 more
wiley   +1 more source

Comparative Physicochemical Evaluation of Fruits and Anti depressant Potential of volatile oils of fruits of Local Piper Species

open access: yes, 2015
In this study an attempt is made to evaluate physicochemical properties comparatively for the fruits of different Piper species available in the Mumbai region. The fruits of five species, viz. Piper betle Linn, Piper cubeba Linn.
Mohib Khan
semanticscholar   +1 more source

Volatile Composition of Essential Oils from Different Aromatic Herbs Grown in Mediterranean Regions of Spain

open access: yesFoods, 2016
Volatile composition of essential oils from dill, parsley, coriander, and mint were investigated at different harvest dates to determine the most suitable harvest time for each these herbs.
H. El-Zaeddi   +4 more
semanticscholar   +1 more source

Toward Sustainable Photocatalysis: Addressing Deactivation and Environmental Impact of Anodized and Sol–Gel Photocatalysts

open access: yesAdvanced Sustainable Systems, EarlyView.
A life‐cycle evaluation of TiO2 photocatalysts for water purification compares the effectiveness of Sol–Gel vs anodic oxides in tetracycline mineralization, targeting deactivation, regeneration, and environmental impact from a cradle‐to‐grave perspective.
Maria Vittoria Diamanti   +5 more
wiley   +1 more source

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