Organizational, intermediate (field) (direct support and general support) and depot maintenance repair parts and special tools list : generator set, gasoline engine driven, skid mounted, tubular frame, 1.5 KW, single phase, AC, 120/240 volts, 28 VDC (less engine) : DoD models MEP-015A ....

"1 May 1986."

Organizational maintenance repair parts and special tools lists : electric power plants, DED skid mounted, 1500 kw, 4160 volts, AC (electromotive model MP36A-60 hertz), NSN 6115-00-250-4401; 1250 kw, 4160 volts ....

"21 January 1980."

Direct and general support maintenance repair parts and special tools list : generator set, gas turbine engine, 45 kw, AC, 120/208 V, 240/416 V, 3 phase, 4 wire, skid mounted, winterized (Airesearch model GTGE 70-6-1), FSN 6115-075-1639.

"October 1968."

Direct and general support and depot maintenance manual : generator set, diesel engine, 200 kw, 60 cycle, AC, 120/208 V, 240/416 V, 3 phase, convertible to 167 kw, 50 cycle, 120/208 V, 240/416 V, 3 phase, multi-purpose, portable, skid mounted (military design model SF-200-MD/CIED) ...

"February 1968."

Direct support and general support maintenance manual : generator set, diesel engine, 45 kw, AC, 120/208, 240/416 V, 3 phase, 400 Hz, skid mounted (Stewart and Stevenson model 52300), NSN 6115-00-475-6573.

"March 1979."

Organizational and direct support maintenance repair parts and special tools list for converters telephone signal, CV-1918A(V)1/G, (NSN 5895-00-504-9103), CV-1918A(V)2/G, (NSN 5805-00-504-9107) and CV-1918A(V)3/G, (NSN 5805-00-137-7674).

Includes index.

Direct support and general support maintenance repair parts and special tools lists (including depot maintenance repair parts and special tools) for converters, frequency, electronic, CV-3084/MSC-46(V) (NSN 5895-00-100-4314) and CV-3084A/MSC-46(V) (NSN 5895-00-614-9593).

Includes index.

Operator, organizational, DS, GS, and depot maintenance manual : Hewlett-Packard AC voltmeter AN/USM-265 (model 400EL02) NSN 6625-00-935-4294, ME-459 (model 400EL) NSN 6625-00-229-0457, ME-465 (model 400E) NSN 6625-00-995-7716.

"May 1967."

Opus polyhistoricon ac festivum, res totius pene orbis concinne complexum,

Ed. by H. von der Hardt.

Tractatus de legibus ac Deo legislatore, : in decem libros distributus. /

Includes indexes.

PhotoVoltaic DC-DC module integrated converter for novel cascaded and bypass grid connection topologies - design and optimisation

Grid connected PhotoVoltaic (PV) inverters fall into three broad categories — Central, String and Module Integrated Converers (MICs). MICs offer any avantaes in performance and flexibility, but are at a cost disadvantage. Two alternative novel approaches proposed by the author — cascaded dc-dc MICs and bypass dc-dc MICs — integrate a simple non-isolated intelligent dc-dc converter with each PV module to provide the advantages of dc-ac MICs at a lower cost. A suitable universal 150W 5A dc-dc converter design is presented based on two interleaved MOSFET half bridges. Testing shows Zero Voltage Switching (ZVS) keeps losses under 1W for bi-directional power flows up to 15W between two adjacent 12V PV modules for the bypass application, and efficiencies over 94% for most of the operational power range for the cascaded converter application. Based on the experimental results, potential optimizations to further reduce losses are discussed.

Bidirectional transport between the trans-Golgi network and the endosomal system

The exchange of proteins and lipids between the trans-Golgi network (TGN) and the endosomal system requires multiple cellular machines, whose activities are coordinated in space and time to generate pleomorphic, tubulo-vesicular carriers that deliver their content to their target compartments. These machines and their associated protein networks are recruited and/or activated on specific membrane domains where they select proteins and lipids into carriers, contribute to deform/elongate and partition membrane domains using the mechanical forces generated by actin polymerization or movement along microtubules. The coordinated action of these protein networks contributes to regulate the dynamic state of multiple receptors recycling between the cell surface, endosomes and the TGN, to maintain cell homeostasis as exemplified by the biogenesis of lysosomes and related organelles, and to establish/maintain cell polarity. The dynamic assembly and disassembly of these protein networks mediating the exchange of membrane domains between the TGN and endosomes regulates cell-cell signalling and thus the development of multi-cellular organisms. Somatic mutations in single network components lead to changes in transport dynamics that may contribute to pathological modifications underlying several human diseases such as mental retardation.

Seasonal growth of the crustose lichen Rhizocarpon geographicum (L.) DC. in South Gwynedd, Wales

Seasonal growth was studied in the slow-growing crustose lichen Rhizocarpon geographicum (L.) DC. in an area of South Gwynedd, Wales. Radial growth rate (RGR) of a sample of 20 thalli was measured in situ at three-month intervals over 51 months on a southeast-facing rock surface. There were five periods of significant growth: July-September of 1993, 1994 and 1995, in January-March of 1996, and in April-June of 1997. In four of these periods, growth coincided with a mean temperature maximum (Tmax) over a three-month period exceeding 15°C and three of the maxima with greater than 450 sunshine hours. Two of the growth maxima coincided with periods of total rainfall exceeding 300 mm and one with greater than 50 rain days in a three-month period. There were no significant linear correlations between RGR and the climatic variables measured. However, there were significant non-linear relationships between RGR and Tmax, the mean temperature minimum (Tmin), the total number of air and ground frosts and the number of rain days in a growth period, the relationship with Tmax being the most significant. Hence, in south Gwynedd, maximum growth of R. geographicum occurs in any season although the period July-September appears to be the most favourable. Relationships between growth and climatic variables were non-linear, temperature having the most significant influence on seasonal growth. ©2006 Balaban.

Variation in hypothallus width and the growth of the lichen Rhizocarpon geographicum (L.) DC.

Variations in hypothallus width were studied in relation to radial growth in the lichen Rhizocarpon geographicum (L.) DC. in South Gwynedd, Wales, UK. Variations were present both within and between thalli and in successive three-month growth periods, but there was no significant variation associated with thallus size. In individual thalli, there were increases and reductions in hypothallus width in successive three-month growth periods attributable to hypothallus growth and changes at the margin of the areolae. Total radial growth over 18 months was positively correlated with initial hypothallus width. These results suggest: 1) individual thalli of similar size vary considerably in hypothallus width, 2) fluctuations in the location of the margin of the areolae in successive three month periods is an important factor determining this variability, 3) hypothallus width predicts subsequent radial growth over 18 months, and 4) variation in hypothallus; width is a factor determining between thallus variability in radial growth rates in yellow-green species of Rhizocarpon.

Interactions within heterogeneous systems of uncontrolled rectifiers for aircraft electrical power systems

There is an increase in the use of multi-pulse, rectifier-fed motor-drive equipment on board more-electric aircraft. Motor drives with feedback control appear as constant power loads to the rectifiers, which can cause instability of the DC filter capacitor voltage at the output of the rectifier. This problem can be exacerbated by interactions between rectifiers that share a common source impedance. In order that such a system can be analysed, there is a need for average, dynamic models of systems of rectifiers. In this study, an efficient, compact method for deriving the approximate, linear, large-signal, average models of two heterogeneous systems of rectifiers, which are fed from a common source impedance, is presented. The models give insight into significant interaction effects that occur between the converters, and that arise through the shared source impedance. First, a 6-pulse and doubly wound, transformer-fed, 12-pulse rectifier system is considered, followed by a 6-pulse and autotransformer-fed, 12-pulse rectifier system. The system models are validated against detailed simulations and laboratory prototypes, and key characteristics of the two system types are compared.