Results 71 to 80 of about 18,261,083 (260)

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Moving Toward Zero Energy Homes. Armory Park del Sol, Tucson, Arizona

open access: yes, 2003
Zero energy home fact sheets available for other places from http://www.eere.energy.gov/buildings/building_america/publications ...
United States Department of Energy; Office of Energy Efficiency and Renewable Energy
core  

A Resource of the National Action Plan for Energy Efficiency [PDF]

open access: yes, 2009
This brief documents how energy efficiency program administrators have used technical, institutional, financial, and other resources to help advance building energy codes at the federal, state, and local levels, and describes the issues involved in ...
National Action Plan for Energy Efficiency   +1 more
core  

An exergy-based energy efficiency analysis on gas production from gas hydrates reservoir by brine stimulation combined depressurization method

open access: yes, 2021
Before performing commercial scale production of natural gas hydrates (NGHs), it is inevitable to estimate the productivity, production period, optimal operation parameters, and further evaluate the technical and economic feasibilities of NGHs field ...
Xu, Qiang   +13 more
core   +1 more source

Cable Tension of Long-Span Steel Box Tied Arch Bridges Based on Radial Basis Function-Support Vector Machine Optimized by Quantum-Behaved Particle Swarm Optimization

open access: yesApplied Sciences
To investigate hanger force during the construction phase of large-span steel box tie arch bridges, the challenge of low accuracy in force identification due to multifactor coupling was addressed.
Hongcai Shi, Menglin Shi, Weisheng Xu
doaj   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

Analysis of a Collision-Energy-Based Method for the Prediction of Ice Loading on Ships

open access: yesApplied Sciences, 2019
Ships designed for operation in Polar waters must be approved in accordance with the International Code for Ships Operating in Polar Waters (Polar Code), adopted by the International Maritime Organization (IMO).
Sabina Idrissova   +3 more
doaj   +1 more source

Chiral separation of chloroalkanes with the chromatographic column onboard Martian rovers

open access: yesFEBS Letters, EarlyView.
Computer image of the Rosalind Franklin Rover of ESA's ExoMars mission. ExoMars is scheduled to land on planet Mars in Oxia Planum in 2029. This area represents an interesting spot to look for biosignatures. Investigations of ExoMars include measurement on molecular chirality. We show that chiral chloroalkanes, that have been identified on Mars, can be
Asma Merzougui   +4 more
wiley   +1 more source

Ending the energy stalemate: A bipartisan strategy to meet America\u27s energy challenges

open access: yes, 2004
reportThis report recommends a revenue-neutral package of measures designed to ensure affordable and reliable supplies of energy for the twenty-first century while responding to growing concern about energy security and the risks of global climate change
National Commission on Energy Policy
core  

Parabolic problems with dynamical boundary conditions in perforated media

open access: yesMathematical Modelling and Analysis, 2003
The asymptotic behavior of the solution of a parabolic dynamical boundary‐value problem in a periodically perforated domain is analyzed. The perforations, which are identical and periodically distributed, are of size ϵ.
C. Timofte
doaj   +1 more source

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