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Now showing items 21-30 of 61
Determining phosphate levels in natural water using a novel electrochemical measurement device
(Massachusetts Institute of Technology, 2020)
Current measurement of the phosphorus level in natural water are based on the phosphomolybdenum blue (PMB) method. In this method, the phosphate and molybdate ion form 12-molybdophosphoric acid (12-MPA) which is reduced ...
Efficiency and abstraction in task and motion planning
(Massachusetts Institute of Technology, 2020)
Modern robots are capable of complex and highly dynamic behaviors, yet the decisionmaking algorithms that drive them struggle to solve problems involving complex behaviors like manipulation. The combination of continuous ...
Input-output biomolecular systems
(Massachusetts Institute of Technology, 2020)
The ability of cells to sense and respond to their environment is encoded in biomolecular reaction networks, in which information travels through processes such as production, modification, and removal of biomolecules. ...
3D organ property mapping using freehand ultrasound scans
(Massachusetts Institute of Technology, 2020)
3D organ property mapping has gained a considerable amount of interest in the recent years because of its diagnostic and clinical significance. Existing methods for 3D property mapping include computed tomography (CT), ...
Thermal energy grid storage : liquid containment and pumping
(Massachusetts Institute of Technology, 2020)
As the cost of renewable energy falls below fossil fuels, the key barrier to widespread sustainable electricity has become availability on demand. Energy storage can enable dispatchable renewables, but only with drastic ...
Transfer learning and robustness for natural language processing
(Massachusetts Institute of Technology, 2020)
Teaching machines to understand human language is one of the most elusive and long-standing challenges in Natural Language Processing (NLP). Driven by the fast development of deep learning, state-of-the-art NLP models have ...
Instabilities of finite-width internal wave beams
(Massachusetts Institute of Technology, 2020)
Internal gravity waves are fundamental to the dynamics of density stratified fluids and the instability mechanisms by which these waves dissipate their energy are a potentially significant factor that underlies the ...
Morphological approaches to understanding Antarctic Sea ice thickness
(Massachusetts Institute of Technology, 2020)
Sea ice thickness has long been an under-measured quantity, even in the satellite era. The snow surface elevation, which is far easier to measure, cannot be directly converted into sea ice thickness estimates without ...
Interactions at interfaces across scales : from adsorption to adhesion
(Massachusetts Institute of Technology, 2020)
The interface between two phases is a prime site for exchanges to occur: from heat or mass transfer to the adsorption of contaminants. This work explores a range of interactions at interfaces across scales, from the ...
Systems and control theoretic approaches to engineer robust biological systems
(Massachusetts Institute of Technology, 2020)
Synthetic biology is an emerging field of research aimed to engineer biological systems by inserting programmed DNA molecules into living cells. These DNAs encode the production and subsequent interactions of biomolecules ...