Research and development study related to the synthesis of formaldehyde from CO2 and H2 Quarterly progress report, Aug. - Oct. 1966

Formaldehyde synthesis procedures under space conditions, with bibliograph

Research and Development Study Related to the Synthesis of Formaldehyde from CO2 and H2 Quarterly Progress Report, Feb. - Apr. 1967

Oxidation of methane to formaldehyde in reactors coated with potassium tetraborat

Research and development study related to the synthesis of formaldehyde from CO2 and H2 Quarterly progress report, May - Jul. 1967

Synthesis of formaldehyde by oxidation of methan

Research and development study related to synthesis of formaldehyde from CO2 and H2 Quarterly progress report, Nov. 1966 - Jan. 1967

Solid catalyst selection for formaldehyde synthesis by methane oxidatio

Optical patterning of trapped charge in nitrogen-doped diamond

The nitrogen-vacancy (NV) centre in diamond is emerging as a promising platform for solid-state quantum information processing and nanoscale metrology. Of interest in these applications is the manipulation of the NV charge, which can be attained by optical excitation. Here we use two-color optical microscopy to investigate the dynamics of NV photo-ionization, charge diffusion, and trapping in type-1b diamond. We combine fixed-point laser excitation and scanning fluorescence imaging to locally alter the concentration of negatively charged NVs, and to subsequently probe the corresponding redistribution of charge. We uncover the formation of spatial patterns of trapped charge, which we qualitatively reproduce via a model of the interplay between photo-excited carriers and atomic defects. Further, by using the NV as a probe, we map the relative fraction of positively charged nitrogen upon localized optical excitation. These observations may prove important to transporting quantum information between NVs or to developing three-dimensional, charge-based memories

Why Do You Control? The Concept of Control Purpose and Its Implications for IS Project Control Research

Existing IS project control research primarily draws on agency theory to conceptualize control, relating control closely to aligning behaviors of self-interested controllees with organizational objectives. Recent studies in neighboring disciplines, however, suggest that the agency view of control is too narrow to fully understand control activities. Informed by these studies as well as drawing on stewardship and coordination theory, we introduce the concept of control purpose to the IS literature. We define this concept as the intentions underlying the controller’s control activities, and distinguish between appropriation- and coordination-oriented controls. To evaluate the control purpose concept, we conduct a secondary analysis of 21 IS project control case studies. Results show that, despite their stated agency focus, most studies report on controls addressing both appropriation concerns and coordination requirements. On this basis, we discuss two potential research areas, knowledge management and control dynamics, where the control purpose concept can offer novel insights

Optimal Design of a Medium-Voltage Grid Analyzer

Much research has been done for medium-voltage applications, where multilevel inverters are challenging classical low-voltage inverters, connected by transformers. Although the decision is very crucial for system costs and performance, comparisons of both approaches are missing, being now introduced for the application of a medium-voltage grid analyzer

Frequency Control of Multi-Pulse 2-micron Laser Transmitter for Atmospheric Carbon Dioxide Measurement

Laser sources with highly stabilized emission wavelength is of paramount importance for a long term atmospheric carbon dioxide (CO2) measurement from a space platform. Integrated Path Differential Absorption (IPDA) lidar is a promising instrument for such a task. The design of a laser transmitter, with emphasis on the method used to control and select several wavelengths, is presented. This multi-pulsed, injection seeded, 2-m transmitter uses a Ho:Tm:YLF laser crystal which has matching emission to the absorption of CO2 in the R30 spectroscopic area. The injection seeded laser produces triple single longitudinal mode transform limited line width pulses with a total of 80 mJ at a repetition rate of 50 Hz