Abstract:
Oxides of lanthanide metals are used to create stable surfaces for use in laser desorption ionization mass spectrometry. The disclosed lanthanide metal oxide surfaces are used to identify and characterize fatty acids from microorganism allowing profiling of the microorganism to the strain level, including antibiotic resistance. Cerium oxide, CeO2, was used to create a stable surface for obtaining fatty acid profiles of bacterial pathogens. Cross validation of results obtained using the disclosed methods, systems, and surfaces, demonstrated greater than 95% accuracy that did not suffer long-term degradation. Bacteria were identified by the disclosed methods, systems, and surfaces with greater than 98% at the species level and 96% at the strain level. Comparisons with existing technologies demonstrate that the presently disclosed methods, systems, and surfaces provide for surprisingly enhanced accuracy and reliability in profiling and identification.
Abstract:
제안기술은 열음극재 제조 방법에 관한 것으로, 더욱 상세하게는 균질한 미세조직을 가지면서도 근사정형 제어가 가능한 사출성형 공정을 활용하여, 열전자 방출 특성이 향상되며 제조가 용이한 열음극재 제조 방법에 관한 발명이다. 본 발명의 열음극재 제조 방법은 원재료에 바인더를 혼합하여 혼합체를 제조하는 단계; 상기 혼합체를 근사정형 형상의 금형을 이용하여 사출 성형하는 단계; 상기 사출 성형을 통해 사출된 성형체에서 바인더를 제거하는 단계; 상기 바인더가 제거된 성형체를 소결하는 단계; 소결된 상기 성형체인 소결체에 열전자 활성제를 함침하는 단계; 함침된 상기 소결체인 함침체에 열전자 방출면을 기계가공하여 제조하는 단계; 를 포함한다.
Abstract:
An energy conversion device comprises a thermionic emitter (10) for emitting electrons therefrom when exposed to a radiation source, the emitter comprising a substrate (11 ), a metallic layer (12), carried by the substrate (11 ), and a nanoparticle layer (13) containing lithium-processed diamond nanoparticles, the nanoparticle layer (13) being in electrical contact with the metallic layer (12), a collector (20), spaced apart from the thermionic emitter (10), and arranged for collecting electrons emitted by the thermionic emitter (10), and first and second electrical connections (50), arranged to be in electrical contact with the metallic layer (12) of the emitter (10) and the collector (20) respectively.