Results 31 to 40 of about 213,549 (261)

Composite electrode based on single-atom Ni doped graphene for planar carbon-based perovskite solar cells

Materials & Design, 2021
In order to improve the inherently inefficient hole extraction from perovskite to carbon electrode in planar carbon-based perovskite solar cells (PSCs), herein, a novel composite electrode composed of single-atom Ni doped graphene (Ni-NG) for PSCs is ...
Min Guo, Chenyang Wei, Congcong Liu, Kun Zhang, Haijun Su, Keyu Xie, Peng Zhai, Jun Zhang, Lin Liu   +8 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Low-porosity carbon templates mitigate mass transport limitations in Fe-N-C catalysts

Nano Research
Fe-N-C catalysts, as promising non-precious metal alternatives for the oxygen reduction reaction (ORR), still suffer from severe mass transport limitations in proton exchange membrane fuel cells (PEMFCs) due to water flooding of active sites embedded in ...
Hongmin Sun, Ziliang Deng, Jingbo Li, Shuailong Zhang, Mufan Li, Haibo Jin, Zipeng Zhao   +6 more
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Technology Advancements for Active Remote Sensing of Carbon Dioxide from Space using the Active Sensing of CO2 Emissions over Nights, Days, and Seasons (ASCENDS) CarbonHawk Experiment Simulator

EPJ Web of Conferences, 2018
This work describes advances in critical lidar technologies and techniques developed as part of the NASA Active Sensing of CO2 Emissions over Nights, Days, and Seasons CarbonHawk Experiment Simulator system for measuring atmospheric column carbon dioxide
Obland Michael D., Campbell Joel, Kooi Susan, Fan Tai-Fang, Carrion William, Hicks Jonathan, Lin Bing, Nehrir Amin R., Browell Edward V., Meadows Byron, Davis Kenneth J.   +10 more
doaj   +1 more source

Quantifying the Potential for Low-Level Transport of Black Carbon Emissions from Cropland Burning in Russia to the Snow-Covered Arctic

Frontiers in Earth Science, 2017
Short lived aerosols and pollutants transported from northern mid-latitudes have amplified the short term warming in the Arctic region. Among those black carbon is recognized as the second most important human emission in regards to climate forcing ...
Joanne V. Hall, Tatiana V. Loboda
doaj   +1 more source

Golgi enzymes are retrieved from the plasma membrane to the trans‐Golgi network

FEBS Letters, EarlyView.
Golgi enzymes are traditionally considered resident proteins retained within the Golgi apparatus. Here, we demonstrate that a subset transiently reaches the cell surface and is subsequently retrieved to the trans‐Golgi network via retrograde transport. Using a nanobody‐based toolkit, we uncover a dynamic trafficking cycle of several Golgi enzymes.
Dominik P. Buser, Tina Junne
wiley   +1 more source

Room temperature conversion of CO2 to graphene allotropes in low-melting-point liquid metal electrocatalytic reactor – hydrodynamics control through inverted gas bubbler design

Carbon Capture Science & Technology
Electrochemical carbon dioxide (CO₂) reduction presents a promising route for CO₂ utilization into high-value carbon-based products but is often hindered by inefficient gas diffusion towards, and product transport from, the electrochemically active ...
Mohamed A. Alyassi, Priyanka Kumari, Harikrishnan Balakrishnan, Chang Ying Shi, Blaise L. Tardy, Ricardo P. Nogueira, Ludovic F. Dumée   +6 more
doaj   +1 more source