Results 171 to 180 of about 2,712 (288)

COVID-19 in artisanal and small-scale mining communities: Preliminary results from a global rapid data collection exercise. [PDF]

Environ Sci Policy, 2021
Perks R, Schneck N.
europepmc   +1 more source

A rockhound's guide: gemstones of Newfoundland and Labrador

A Rockhound's Guide, Gemstones of Newfoundland and ...
by F. J. Warren ; presented by the Newfoundland and Labrador Tourist Development Office, Edward P. Henley, Director.
core  

Sequential regenerative therapy using biologic‐based regeneration and connective tissue graft wall technique for a severe infrabony defect: A case report

Clinical Advances in Periodontics, EarlyView.
Abstract Background Regenerative therapy based on the principles of guided tissue regeneration (GTR) is an effective approach for the treatment of periodontal infrabony defects. However, complete resolution for deep and complex defects is not always predictable.
Wenwen Liu, Yilong Chen, Muhammad Saleh, Hom‐Lay Wang   +3 more
wiley   +1 more source

Prediction of benign and malignant pulmonary nodules using preoperative CT features: using PNI-GARS as a predictor. [PDF]

Front Immunol
Zhan Y, Song F, Zhang W, Gong T, Zhao S, Lv F.   +5 more
europepmc   +1 more source

Dual‐Function Electrocatalysis: Simultaneous Wastewater Remediation and Hydrogen Evolution—A Comprehensive Review

Carbon Energy, EarlyView.
Replacing the oxygen evolution reaction with the electro‐oxidation of pollutants and waste streams offers an energy‐efficient route for simultaneous hydrogen production and pollutant remediation. This review summarizes the reaction mechanisms, catalyst design principles, and emerging paired‐electrolysis strategies that govern activity, selectivity ...
Safa Al‐Yahyaey, Rashid Al‐Hajri, Ala'a H. Al‐Muhtaseb, Hussein A. Younus, Mohammed Al‐Abri   +4 more
wiley   +1 more source

Nitrooxylation in Organic Synthesis: From Classical Nitrate Ester Formation to Modern Catalytic Strategies

Chemistry – A European Journal, EarlyView.
Nitrooxylation—the installation of nitrate esters (–ONO2) has evolved from classical mixed‐acid protocols to catalytic and mechano‐, flow‐, photo‐, and electrochemical strategies. This review delineates ionic and radical manifolds for C–ONO2 bond formation, emphasizing mechanistic control, selected substrate scope, and selectivity.
Jayanta Dey, Dmitry Katayev
wiley   +1 more source

Land use controls the spatiotemporal patterns of surface water quality of the Quadrilátero Ferrífero mineral province, Brazil. [PDF]

Environ Geochem Health
de Almeida GS, Amarante RT, da Costa Andrade NYM, Dall'Agnol R, Sahoo PK, Pontes PRM, Silva-Filho EV, Marques ED, Mendonça RF, Junior AGS, Salomão GN.   +10 more
europepmc   +1 more source

Control of Gemcitabine Activity With Blue and Red Light

Chemistry – A European Journal, EarlyView.
Treating cancer with chemotherapy is generally associated with many side effects, which can be addressed by selectively releasing the desired drugs with visible light. Sixteen new blue light‐activatable cytostatics were introduced, with the gemcitabine derivative exhibiting ideal properties.
Nils F. Kersten, Konstantin L. Stock, Marius Hyprath, Hannah Weisser, Timo Weinrich, Dieter Steinhilber, Alexander Heckel   +6 more
wiley   +1 more source

Cyclopropylamine‐Derived Distonic Iminium Radicals: Photoinduced Strategies in Chemo‐ and Stereo‐Selective Synthesis

Chemistry – A European Journal, EarlyView.
Cyclopropylamines have emerged as powerful photocatalytic building blocks. Upon light‐induced single‐electron oxidation, they undergo strain‐release ring opening to generate distonic iminium radicals that enable diverse transformations, including ring‐opening functionalization, formal [3 + 2] cycloadditions, radical cascades, and asymmetric bond ...
Maria Chiara Cabua, Alberto Luridiana, Francesco Secci, Emanuele Cocco   +3 more
wiley   +1 more source

Gemmological, Spectroscopic, and Origin Description Studies of Tourmaline from Yunnan, China. [PDF]

Molecules
Zhou Q, Zhan F, Yu H, Lu Z, Wan X.
europepmc   +1 more source