摘要:
A method includes performing, on a processor, evaluating log data; determining at least one discrepancy between the log data and a system model; generating a candidate model based on the discrepancy and a model template; and updating the system model based on the candidate model.
摘要:
A bi-laterally surfaced substrate in which the first surface consists of one or more than one of cerium oxide, aluminum oxide, tin oxide manganese oxide, copper oxide, cobalt oxide, nickel oxide, praseodymium oxide, terbium oxide, ruthenium, rhodium, palladium, silver, iridium, platinum and gold and the second surface consists of one or more than one of ruthenium, rhodium, palladium, silver, iridium, platinum and gold and micro channel micro component reactors including such substrates in a predetermined formed shape and methods for making the same utilizing a thermal spray on one side and a physical deposition process on the other side.
摘要:
The present teachings are directed to a method of converting water and a carbon-containing compound, such as CO2, into a hydrocarbon through a process of absorbing sunlight on a light-absorbing component to photoelectrochemically oxidize water and reacting the products from that water oxidation reaction over a catalyst with the carbon-containing compound to produce the desired hydrocarbon compound.
摘要:
Systems and methods provide a selective instrumentation strategy for monitoring the progress of transactions in a distributed computing system. The monitoring of the transactive processing of jobs is considered through a collection of computer operating stages in a distributed system, using limited information. The monitoring is performed by observing log records (or footprints) produced during each stage of processing in the system. The footprints lack unique transaction identifiers resulting in uncertainties in monitoring transaction instances. The processing stages are selective instrumented to reduce monitoring uncertainty under the given constraints such as limited budget for instrumentation cost.
摘要:
The present teachings are directed toward electrocatalyst compositions of platinum, titanium and at least a third metal for use in fuel cells. The electrocatalyst composition is composed essentially of platinum present in an atomic percentage ranging between about 55 percent and about 85 percent, titanium present in an atomic percentage ranging between about 1 percent and about 30 percent, and at least a third metal present in an atomic percentage ranging between about 1 percent and about 30 percent. The third metal can be at least one member selected from the group consisting of nickel, vanadium and molybdenum.
摘要:
The present teachings are directed toward electrocatalyst compositions of platinum, tungsten and at least a third metal for use in fuel cells. The electrocatalyst composition is composed essentially of platinum present in an atomic percentage ranging between about 20 percent and about 55 percent, tungsten present in an atomic percentage ranging between about 30 percent and about 75 percent, and at least a third metal present in an atomic percentage ranging between about 1 percent and about 40 percent. The third metal can be at least one member selected from the group consisting of scandium, vanadium, chromium, manganese, iron, cobalt, copper, zinc, yttrium, niobium, molybdenum, cadmium, tin, hafnium, tantalum and rhenium; additional fourth and fifth metals can also be present.
摘要:
The present teachings are directed toward electrocatalyst compositions of platinum, titanium and at least a third metal for use in fuel cells. The electrocatalyst composition is composed essentially of platinum present in an atomic percentage ranging between about 50 percent and about 85 percent, titanium present in an atomic percentage ranging between about 5 percent and about 30 percent, and at least a third metal present in an atomic percentage ranging between about 1 percent and about 30 percent. The third metal can be at least one member selected from the group consisting of cobalt, ruthenium, rhodium, palladium, silver, osmium, iridium and gold.
摘要:
A fuel cell electrocatalyst that contains platinum, vanadium, and iron. In one embodiment, the fuel cell electrocatalyst has a concentration of platinum that is less than 50 atomic percent. In another embodiment, the fuel cell electrocatalyst has a concentration of vanadium that is greater than 25 atomic percent.
摘要:
An electrochemical cell assembly including a plurality of testing cells, a reference cell, and fluid connections between the testing cells and the reference cell. Each of the testing cells includes a working electrode, which is a rotating disk or ring-disk electrode, and a counter electrode. A chemical composition, whose intrinsic kinetic properties under defined mass-transfer are to be investigated, is deposited on the working electrode. The reference cell holds a reference electrode that serves as a common reference electrode for each of the testing cells. The assembly permits simultaneous testing of many chemical compositions under identical environment.
摘要:
The present teachings are directed toward electrocatalyst compositions of platinum, tungsten and at least a third metal for use in fuel cells. The electrocatalyst composition is composed essentially of platinum present in an atomic percentage ranging between about 20 percent and about 55 percent, tungsten present in an atomic percentage ranging between about 30 percent and about 75 percent, and at least a third metal present in an atomic percentage ranging between about 1 percent and about 40 percent. The third metal can be at least one member selected from the group consisting of scandium, vanadium, chromium, manganese, iron, cobalt, copper, zinc, yttrium, niobium, molybdenum, cadmium, tin, hafnium, tantalum and rhenium; additional fourth and fifth metals can also be present.