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We report the discovery of methanogenic archaea that account for abrupt factor 10 increases in methane concentration found by E. Brook at depths of 2954 and 3036 m in the GISP2 (Greenland Ice Sheet Project 2) ice core. The total microbial…

Populations and Evolution · Quantitative Biology 2007-05-23 H. C. Tung , N. E. Bramall , P. B. Price

Microfluidic fuel cells (MFCs) are microfluidic electrochemical conversion devices that are used to power small pieces of electrical equipment. Their performance relies on the improvement of the mass transfer of the reactants at the…

Diffuse pollution in rural areas due to agricultural run-off is a widespread and difficult problem to address due to the vast areas affected. Drainage channels do receive these polluted waters, but its introduction in the conventional…

Populations and Evolution · Quantitative Biology 2018-06-27 Maria Jesus Garcia-Galan , Raquel Gutierrez , Enrica Uggetti , Victor Matamoros , Joan Garcia , Ivet Ferrer

Correlating the microstructure of an energy conversion device to its performance is often a complex exercise, notably in solid oxide fuel cell (SOFC) research. SOFCs combine multiple materials and interfaces that evolve in time due to high…

A flexible technique is developed using hydrochloric acid to modify the redox reaction between potassium permanganate and sodium nitrite in order to grow ultrafine alpha-MnO2 nanorods, hydrothermally. The nanorods grown were 10-40 nm…

Materials Science · Physics 2018-09-11 Niraj Kumar , K. Guru Prasad , Arijit Sen , T. Maiyalagan

Wild populations of Medicago ciliaris and Medicago polymorpha were subjected to four salt treatments 0, 50, 100 and 150 mM NaCl, plant growth and proline concentration in leaves were assessed. The analyzed data revealed significant…

Quantitative Methods · Quantitative Biology 2016-09-26 Khalil Cherifi , Abdelmajid Haddioui , Mohammed El Hansali , El Houssein Boufous

The Cassini mission to the Saturn system discovered a plume of ice grains and water vapor erupting from cracks on the icy surface of the satellite Enceladus. This moon has a global ocean in contact with a rocky core beneath its icy…

Earth and Planetary Astrophysics · Physics 2020-12-17 Christine Ray , Christopher R. Glein , J. Hunter Waite , Ben Teolis , Tori Hoehler , Julie A. Huber , Jonathan Lunine , Frank Postberg

Biophotovoltaics has emerged as a promising technology for generating renewable energy since it relies on living organisms as inexpensive, self-repairing and readily available catalysts to produce electricity from an abundant resource -…

Direct carbon fuel cells (DCFCs) are highly efficient power generators fueled by abundant and cheap solid carbons. However, the limited formation of triple phase boundaries (TPBs) within fuel electrodes inhibits their performance even at…

Applied Physics · Physics 2018-02-19 Wei Wu , Yunya Zhang , Dong Ding , Ting He

A one dimensional (1-D), isothermal model for a direct methanol fuel cell (DMFC) is presented. This model accounts for the kinetics of the multi-step methanol oxidation reaction at the anode. Diffusion and crossover of methanol are modeled…

Chemical Physics · Physics 2020-03-10 Brenda L. Garcia , Vijay A. Sethuraman , John W. Weidner , Roger Dougal , Ralph E. White

Parametrizing energy functions for ionic systems can be challenging. Here, the total energy function for an eutectic system consisting of water, SCN$^-$, K$^+$ and acetamide is improved vis-a-vis experimentally measured properties. Given…

Chemical Physics · Physics 2024-10-25 Kai Töpfer , Eric Boittier , Michael Devereux , Andrea Pasti , Peter Hamm , Markus Meuwly

The intense debate about the presence of methane in the Martian atmosphere has stimulated the study of methanogens adapted to terrestrial habitats that mimic Martian environments. We examinate the environmental conditions, energy sources…

Earth and Planetary Astrophysics · Physics 2025-01-24 Andrea Butturini , Robert Benaiges-Fernandez , Octavi Fors , Daniel Garcia-Castellanos

This study presents a novel approach for the degradation of tetracycline (TC) in pig manure wastewater using magnet-ite-based magnetic nanofibers (MNFs) as heterogeneous Fenton-like catalysts. The MNFs, composed of polyacrylonitrile (PAN)…

This study aims at demonstrating that wastes from anaerobic biodigester plants can be effectively valorized as functional materials to be implemented in technologies that enable efficient energy management and water treatment, therefore…

A full lithium-ion-sulfur cell with a remarkable cycle life was achieved by combining an environmentally sustainable biomass-derived sulfur-carbon cathode and a pre-lithiated silicon oxide anode. X-ray diffraction, Raman spectroscopy,…

The compound 2-mercaptobenzothizaole (MBT) has been frequently detected in wastewater and surface water and is a potential threat to both aquatic organisms and human health (its mutagenic potential has been demonstrated). This study…

Genomics · Quantitative Biology 2020-05-14 M. Isabel San-Martin , Adrian Escapaa , Raul M. Alonso , Moises Canle , Antonio Moran

One pot synthetic technique was used to synthesize mesoporous fullerene using highly ordered mesoporous template such as KIT6-150 and SBA-15-150. Highly ordered porous fullerene with cross linkage between the fullerene molecules was…

Materials Science · Physics 2015-03-12 Sujit K. Mondal

Motility is a ubiquitous feature of microbial life on Earth, and is widely regarded as a promising biosignature candidate. In the search for motile organisms, it is therefore valuable to have rough estimates for the number of such microbes…

Earth and Planetary Astrophysics · Physics 2021-05-24 Manasvi Lingam , Abraham Loeb

A molten carbonate fuel cell (MCFC) is an electro-chemical energy conversion technology that runs on natural gas and employs a molten salt electrolyte. In order to keep the electrolyte in this state, the cell must be kept at a temperature…

Materials Science · Physics 2009-09-04 Peter Berg , Justin Findlay

We report the design and development of a dual-functional magnetic nanoparticle platform for potential treatment of H. pylori infection. We show that an ultralow concentration of Mn0.3Fe2.7O4@SiO2 nanoparticles subjected to a moderate AC…