Results 71 to 80 of about 20,169 (249)

Graphene-coupled nanowire hybrid plasmonic gap mode–driven catalytic reaction revealed by surface-enhanced Raman scattering

Nanophotonics, 2020
The single-layer graphene (SLG)-coupled nanowire (NW) hybrid plasmonic gap mode (PGM)-driven molecular catalytic reaction was investigated experimentally and theoretically.
Li Ze, Pan Yan, You Qingzhang, Zhang Lisheng, Zhang Duan, Fang Yan, Wang Peijie   +6 more
doaj   +1 more source

Responses of Antarctic seabird populations to past climate change

Ecography, EarlyView.
Higher‐order predators such as Antarctic seabirds serve as ecological indicators of environmental change and provide a crucial trophic link between marine and terrestrial ecosystems. Despite their prevalence and significance in the Antarctic ecosystem, there is a lack of understanding of the impacts of major regime shifts in paleoclimate on flighted ...
Elize Y. X. Ng, Louise Emmerson, Barbara Wienecke, Fabiola León Miranda, Colin Southwell, Juliana A. Vianna, Christopher P. Burridge   +6 more
wiley   +1 more source

EFFECTS OF RE-ROUTING OF CONCENTRATE STREAMS IN THE INDUSTRIAL SCALE FROTH FLOTATION OF LOWER GROUP 6 PGM ORE [PDF]

Journal of Engineering Science and Technology, 2016
The Lower Group 6 (LG6) platinum group of metals (PGM) ore was subjected to batch and continuous industrial froth flotation with and without concentrate streams re-routing.
EMMANUEL M. SHAI, ABRAHAM A. ADELEKE, ABIMBOLA P. IDOWU POPOOLA   +2 more
doaj  

Refining Approaches in the Platinum Group Metal Processing Value Chain—A Review

Metals, 2018
Mineable platinum group metal (PGM) deposits are rare and found in relatively few areas of the world. At the same time, the use of PGM is predicted to expand in green technology and energy applications, and PGMs are consequently currently listed as ...
Pia Sinisalo, Mari Lundström
doaj   +1 more source

Advances in Design Strategy and Mechanism Insights for Alkaline Hydrogen Evolution Reaction: Multilevel Site Engineering and Structure–Activity Relationship

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review is about material design based on engineering multilevel sites from theoretical calculation and synthetic routes to mechanism, structure–activity relationship, challenges and perspectives for boosting hydrogen production in alkaline electrolyte. Electrolytic water splitting is a clean, carbon‐free method for producing green hydrogen and has
Ke Zhang, Hongying Luo, Yudong Du, Kehao Yu, Huayu Wu, Shimin Chai, Yanyan Liu, Yongfeng Wang, Jianchun Jiang, Baojun Li   +9 more
wiley   +1 more source

Design of the U-slotted oval-shaped phase gradient metasurface and antenna for 5G wireless communication

Results in Engineering
The rapid advancement of wireless communication, particularly with the deployment of 5 G networks, necessitates the development of high-performance antennas capable of supporting high data rates, low latency, and efficient spectrum utilization.
Devendra Soni, Dinesh Yadav, Manish Tiwari   +2 more
doaj   +1 more source

Machine Learning Unveils Isolated‐Surrounded Pt Motifs in High‐Entropy Alloys for Superior Low‐Temperature Ammonia Oxidation

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A physics‐informed machine learning approach successfully decodes the complex catalytic activity of high‐entropy alloys for ammonia oxidation. By revealing a synergistic mechanism involving lattice and electronic couplings, the study identifies a superior “isolated‐surrounded” platinum motif.
Shangfeng Jiang, Ting Tao, Kexiang Guo, Xinyu Fan, Xu Zhang, Zhen Zhou   +5 more
wiley   +1 more source

Hydrogen Production With Water Electrolysis Technologies: Advances, Performance, and Potential Use for Low‐Gradient Combustion

Energy Science &Engineering, EarlyView.
This review links recent advances in water electrolysis with hydrogen utilization in low‐gradient combustion systems. While hydrogen eliminates direct CO2 emissions, its environmental and economic benefits depend strongly on production pathways, system‐level efficiency, and NOx mitigation through MILD/FLOX/HiTAC combustion.
Rafał Buczyński, Przemysław Draga
wiley   +1 more source

A multicenter analysis of 1364 elective/rescue cerclages in Brazil: Perinatal outcomes, complications, and the role of vaginal progesterone

International Journal of Gynecology &Obstetrics, EarlyView.
Abstract Objective To evaluate perinatal outcomes in women undergoing cervical cerclage for prevention of preterm birth in Brazilian maternity hospitals. Methods This retrospective cohort study included 1364 women with singleton pregnancies who underwent elective or rescue cervical cerclage between December 2003 and November 2025.
Isabella C. Bragheto, Gabriela M. Pereira, Camila Mirandez, Marcelo Luis Nomura, Elton Carlos Ferreira, Rodolfo C. de Pacagnella, Evelyn Traina, Danilo B. Silva, Karayna Gil Fernandes, Julia Negro, Conrado M. Coutinho, Manuella R. Pereira, Janete Vettorazzi, Julia Hubner, Edson Vieira Cunha Filho, Ellen M. Arlindo, Aluana R. Parola, Pedro D. Correa, Renato Passini Junior, Renato T. Souza   +19 more
wiley   +1 more source

Use of predictive tools for the analysis of bioactive compounds in Crocus sativus L. flowers

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Crocus sativus L. (saffron) flowers have high bioactive potential because of their content of crocins, safranal and phenolic compounds. The development of predictive models based on near‐infrared (NIR) spectroscopy and partial least squares regression to estimate the antioxidant capacity of saffron flower, evaluated using oxygen ...
Manuel Piqueras‐García, Jorge F Escobar‐Talavera, María Esther Martínez‐Navarro, Gonzalo L Alonso, Rosario Sánchez‐Gómez   +4 more
wiley   +1 more source