The present application provides, among other things, compounds and methods for metathesis reactions. In some embodiments, a provided compound has the structure of formula i, ii or iii. ... Massachusetts Institute Of Technology
Disclosed are methods for the manufacture of n-type and p-type filled skutterudite thermoelectric legs of an electrical contact. A first material of cosi2 and a dopant are ball-milled to form a first powder which is thermo-mechanically processed with a second powder of n-type skutterudite to form a n-type skutterudite layer disposed between a first layer and a third layer of the doped-cosi2. ... Massachusetts Institute Of Technology
The invention provides compositions and methods for, inter alia, augmenting cell-based therapies in vivo by repeatedly stimulating target cells of interest over a period of time.. . ... Massachusetts Institute Of Technology
Systems and methods of self-referenced quantitative phase microscopy (srqpm). The srqpm systems and methods provide single-shot, full-field imaging capability for increased imaging speed, and near-common-path geometry for increased phase stability, allowing the study of internal structures of biological cells, live cell dynamics, and the like.. ... Massachusetts Institute Of Technology
The use of porous materials in the dead space of reciprocating engines is described. The porous material can be used to condition the cylinder gases. ... Massachusetts Institute Of Technology
Between two juxtaposed similar ion exchange membranes (aems or cems), an ion depletion zone (dde) and ion enrichment zone (den) are generated under an electric field. As cations are selectively transferred through the cems, for example, anions are relocated in order to achieve electro-neutrality, resulting in the concentration drop (increase) in ion depletion (enrichment) zone. ... Massachusetts Institute Of Technology
Al—mnx/al—mny multilayers with a wide range of structures ranging from microcrystalline to nanocrystalline and amorphous were electrodeposited using a single bath method under galvanostatic control from room temperature ionic liquid. By varying the mn composition by −1-3 at. ... Massachusetts Institute Of Technology
Fuel management system for efficient operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder of the engine. ... Massachusetts Institute Of Technology
A method for the machine generation of a model for predicting patient outcome following the occurrence of an event. In one embodiment the method includes the steps of obtaining a physiological signal of interest, the physiological signal having a characteristic; obtaining a time series of a signal characteristic; dividing the time series into a plurality of window segments; converting the time series from time-space to beat-space; computing the power in various frequency bands of each window segment; computing the 90th percentile of the spectral energies across all window segments for each frequency band; and inputting the data into a machine learning program to generate a weighted risk vector.. ... Massachusetts Institute Of Technology
Articles and methods for stem cell differentiation are generally described. In some embodiments, an article for stem cell differentiation may comprise an oxygen permeable substrate having at least a portion of a surface coated with a matrix. ... Massachusetts Institute Of Technology
The invention provides methods of identifying metakaryotic stem cells, as well as methods of identifying agents that selectively modulate the growth, migration, replication, and/or survival of these cells by detecting an intermediate dsrna/dna duplex genome. Also provided are diagnostic, prognostic, and treatment methods for disorders, such as atherosclerosis, restenosis, and benign or malignant tumors.. ... Massachusetts Institute Of Technology
A power converter includes a pcb and a semiconductor die coupled to the pcb. The semiconductor die includes first through fourth switching devices. ... Massachusetts Institute Of Technology
In exemplary implementations of this invention, a light source illuminates a scene and a light sensor captures data about light that scatters from the scene. The light source emits multiple modulation frequencies, either in a temporal sequence or as a superposition of modulation frequencies. ... Massachusetts Institute Of Technology
A feed liquid flows into a second-stage humidifier chamber to form a second-stage humidifier bath. A first remnant of the feed liquid from the second-stage humidifier chamber then flows into a first-stage humidifier chamber to form a first-stage humidifier bath having a temperature lower than that of the second-stage bath. ... Massachusetts Institute Of Technology
In exemplary implementations of this invention, a camera can capture multiple millions of frames per second, such that each frame is 2d image, rather than a streak. A light source in the camera emits ultrashort pulses of light to illuminate a scene. ... Massachusetts Institute Of Technology