Results 51 to 60 of about 85,152 (264)

Mass‐Transport–Engineered CCM Architecture Employing MPL‐Free Carbon Paper and Graphene‐Coated Ni Foam Channels for High‐Temperature PEM Fuel Cells

Advanced Science, EarlyView.
A CCM‐based architectural strategy is introduced for high‐temperature PEM fuel cells, enabling MPL‐free carbon paper gas diffusion layers via decal‐transfer processing. By co‐engineering the CCM, GDL, and a G‐foam flow field, oxygen transport is enhanced while phosphoric‐acid leakage is suppressed, resulting in high power density and stable operation ...
Seongmin Cho, Songi Oh, Mingyu Kim, Jung Hwa Choi, Sunjae Hwang, Ji‐Hoon Jang, Segeun Jang   +6 more
wiley   +1 more source

River flow amplification under climate change: attribution and climate-driven storylines of the winter 2023/24 UK floods

Environmental Research Letters
Climate change is expected to alter the magnitude and frequency of river floods. Post-event analyses often assess the rarity of events from historical observations, and a growing number of studies attempt to attribute the event’s severity to ...
Wilson C H Chan, Lucy J Barker, Davide Faranda, Jamie Hannaford   +3 more
doaj   +1 more source

Trophic Diversity in Duckweed: Mixotrophy, More Than the Sum of its Extremes

Advanced Science, EarlyView.
In the context of rising DOC in aquatic environments, mixotrophic duckweed may impact carbon cycling by acting as either a carbon sink, as they absorb CO2 through photosynthesis, or a carbon source, as they release CO2 through respiration of absorbed DOC, which depends on DOC concentration, light availability, temperature, and other environmental ...
Zuoliang Sun, Yan Chen, Fajun Li, Xuyao Zhao, Qingxiang Han, Hongwei Hou   +5 more
wiley   +1 more source

Coping with Floods in Pikine, Senegal: An Exploration of Household Impacts and Prevention Efforts

Urban Science, 2019
African cities are at increasing risk for disasters, including floods. Pikine, Senegal—located on the outskirts of the Dakar metropolitan region—has experienced regular floods since 2005 due to a rising water table, dense settlement, and ...
Hilary Hungerford, Sarah L. Smiley, Taylor Blair, Samantha Beutler, Noel Bowers, Eddy Cadet   +5 more
doaj   +1 more source

Following the edge of the flood: use of shallow-water habitat by larval silver carp Hypophthalmichthys molitrix in the upper Mississippi river system

Journal of Freshwater Ecology, 2020
We examined the use of “edge of flood” habitats by larval silver carp during the extensive flooding that occurred in Pool 26 of the Upper Mississippi River near Alton, IL, USA and St. Louis, MO, USA during the summer of 2015.
John H. Chick, Carol E. Colaninno, Autumn M. Beyer, Kelly B. Brown, Curtis T. Dopson, Ariana O. Enzerink, Stephanie R. Goesmann, Tom Higgins, Nigel Q. Knutzen, Erin N. Laute, Paula M. Long, Paige L. Ottenfeld, Abigail T. Uehling, Lillian C. Ward, Kristopher A. Maxson, Eric N. Ratcliff, Benjamin J. Lubinski, Eric J. Gittinger   +17 more
doaj   +1 more source

A Symmetric Cogeneration Fuel Cell for Coupled Production of Hydrogen, Ammonia and Formate

Advanced Science, EarlyView.
A symmetric cogeneration fuel cell integrating value‐added chemical synthesis with electricity generation by coupling formaldehyde oxidation with the nitrate reduction was developed. This work highlights the broader potential of symmetric cogeneration fuel cells as a general platform for rational reaction pairing, offering a practical pathway to lower ...
Yingjie Song, Peimiao Zou, Renhang Wang, Qi Zhang, Yisong Han, Christopher Waldron, Marc Walker, Ben G. Breeze, Shanwen Tao   +8 more
wiley   +1 more source

05-07 MART 2004 TARİHLİ GÖKSU NEHRİTAŞKINI VE SİLİFKE’YE ETKİSİ

Selçuk Üniversitesi Sosyal Bilimler Enstitüsü Dergisi, 2007
5-7 Mart 2004 tarihinde Göksu Nehri’nin taşmasıyla Silifke ve çevresinde büyük bir sel felaketi yaşanmıştır. Sele sebep olan akım yükselmesinin yağıştan ziyade kar erimelerine bağlıolduğu anlaşılmaktadır.
Adnan Doğan Buldur, Adnan Pınar, Adnan Başaran   +2 more
doaj  

Florística e estrutura do componente arbustivo-arbóreo de uma floresta higrófila da bacia do rio Jacaré-Pepira, SP, Brasil Floristics and structure of the shrub and the tree-layer of a swamp forest in Jacaré-Pepira river, Southeastern Brazil

Acta Botânica Brasílica, 2003
As florestas higrófilas são formações ribeirinhas caracterizadas por ocorrerem em solo permanentemente encharcado e restritas a pequenos fragmentos junto a outros tipos vegetacionais.
Márcia C. M. Marques, Sandro Menezes Silva, Alexandre Salino   +2 more
doaj   +1 more source

High Free‐Volume Imidazole‐Based Ionomers for High‐Temperature Proton Exchange Membrane Fuel Cells

Advanced Science, EarlyView.
High free‐volume imidazole‐based ionomers (PF4IM‐72) enable enhanced phosphoric acid uptake and efficient proton transport, delivering peak power densities of 0.645 W cm−2 at 160 °C and 0.838 W cm−2 at 200 °C in HT‐PEMFCs. This work highlights a promising platform for next‐generation ionomers with improved high‐temperature performance and stability ...
Ge Chao, Hyeon Keun Cho, Chang Yeon Hyun, Shirong Li, Jong Geun Seong, So Young Lee, Nanwen Li, Young Moo Lee   +7 more
wiley   +1 more source

Operando Raman Spectroscopy Reveals Backpressure‐Controlled Dynamics in Diluted CO2 Electrolysis

Advanced Science, EarlyView.
High backpressure operation governs the CO2 reduction reaction (eCO2RR) kinetics and selectivity, as well as the CO2 and water dynamics, as revealed through operando Raman spectroelectrochemical measurement. Operating eCO2RR near diffusion‐limited conditions provides a platform for investigating the competition between eCO2RR and the hydrogen evolution
Muhammad Adib Abdillah Mahbub, Bashir Eid, Kinran Lau, Nini Zhang, Thomas Quast, Ann Cathrin Brix, Debanjan Das, Wolfgang Schuhmann   +7 more
wiley   +1 more source