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Control of Slave EDFA with Master EDFA

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光学学报 2003年第S1期23卷 423-424页

作者： Cechan Tian Susumu Kinoshita Photonics Networking Laboratory Fujitsu Laboratories of America Inc. 2801 Telecom Parkway Richardson TX 75082Photonics Networking Laboratory Fujitsu Laboratories of America Inc. 2801 Telecom Parkway Richardson TX 75082

We have demonstrated that the AGC signals generated in a master EDFA can be used to drive a slave EDFA, thus to make the slave EDFA work in AGC mode without its own AGC control electronics. This idea can be used to re... 详细信息

关键词： Control of Slave EDFA with Master EDFA on in of AGC with

Flexible Twin Open Ring Metro WDM Network

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光学学报 2003年第S1期23卷 713-714页

作者： Susumu Kinoshita Cechan Tian Satoru Ohdate Koji Takeguchi Yasuhiko Aoki Photonics Networking Laboratory Fujitsu Laboratories of America Inc. 2801 Telecom Pkwy Richardson TX 75082

We have demonstrated a flexible twin open ring WDM network for metro applications. A pair of optical switches in the network keeps the fiber rings open to prevent signal circulation. Traffics are broadcast to every no... 详细信息

关键词： optical switches WDM network

Resource Allocation and Beamforming Algorithm Based on Interference Avoidance Approach for Device-to-Device Communication Underlaying LTE Cellular Network

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Communications and Network 2013年第3期5卷 367-373页

作者： Huy-Dung Han Chenxi Zhu Dorin Viorel Akira Ito fujitsu laboratories of america inc. Sunnyvale CA USA

In this work, we consider device-to-device (D2D) direct communication underlaying a 3GPP LTE-A network. D2D communication enables new service opportunities, provides high throughput and reliable communication while reducing the base station load. For better total performance, D2D links and cellular links share the same radio resource and the management of interference becomes a crucial task. We propose a radio resource allocation for D2D links based on interference avoidance approach. For system with multiple transmit antennas, we apply beamforming technique based on signal to leakage criterion to reduce the co-channel interference. The results show that, D2D transmission with the resource allocation and beamforming technique provides significant gain compared to that of the regular cellular network.

关键词： Device-to-Device LTE Resource Allocation Beamforming

A History of Fischer-Tropsch Wax Upgrading at BP-from Catalyst Screening Studies to Full Scale Demonstration in Alaska

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Journal of Natural Gas Chemistry 2006年第1期15卷 1-10页

作者： John P. Collins Joep J. H. M. Font Freide Barry Nay BP Exploration america inc. BP Exploration Operating Company

Conversion of Fischer-Tropsch wax into high quality synthetic crude or finished transportation fuels such as premium diesel has been studied over the past 15 years within BP. Catalyst screening and selection was carried out in dedicated micro-reactors and pilot plants, whose designs are critical to the performance selection. Variation in catalyst composition and defining the gas to oil feed ratios with the operating temperature are a few of the parameters studied. Product selection and maximizing diesel yield combined with stability （catalyst life） were the ultimate drivers. The selected catalyst was then tested under commercial conditions in a dedicated 300 barrel per day demonstration plant. The products were also tested in engines to assess their combustion characteristics.

关键词： Fischer-Tropsch wax upgrading hydrocracking synthetic crude diesel naphtha engine emission

Relationship between rock macro-and micro-properties and wellbore breakout type

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Underground Space 2021年第1期6卷 62-75页

作者： Hossein Rahmati Alireza Nouri Dave Chan Hans Vaziri University of Alberta AlbertaCanada BP america inc. HoustonUSA

This study numerically investigates the effect of material micro-and macro-parameters on the failure mechanisms and geometry of a wellbore *** analysis of the borehole breakout is essential in addressing wellbore stability,well completion,and sand production *** three-dimensional discrete element method(DEM)was used in the *** numerical tool was used in numerical model simulations of drilling through sandstone in cubic samples at the laboratory scale subjected to pre-existing far-field ***,a series of triaxial testing simulations were performed to relate the micromechanical parameters to the macromechanical material *** results showed that the geometry of the breakout is affected,among the material micro-parameters,by the particle contact modulus,bond normal and shear strengths,particle crushing strength,and particle size ***,it was found that the macro-parameters inc.uding Young’s modulus,friction and dilation angles,and uniaxial compression strength(UCS)also affect the type of breakout.

关键词： Borehole breakout Numerical simulation Material properties

High-frequency and low-amplitude relative sea-level changes in the Turonian Ferron Notom Delta, Henry Mountains region Utah, USA: implications for sequence stratigraphy and hydrocarbon exploration

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Petroleum Science 2014年第1期11卷 14-27页

作者： Li Weiguo Zhu Yijie BP america inc. 501 Westlake Park Chevron Energy Technology Company

The Turonian Notom Delta is one of the Ferron fluvial-deltaic wedges deposited in the foreland basins of the Cretaceous Seaway of North *** wedge is exposed three dimensionally in the Henry Mountains region Utah,***-resolution sequence stratigraphic analysis along a 35 km dip-oriented outcrop belt shows that the wedge consists of six depositional *** and Inoceramid biostratigraphy and 40Ar/39Ar age dating of various bentonites show that the wedge was deposited from 91.25 Ma to 90.63 Ma,an interval of merely 0.62 *** each sequence is formed over a similar time span,each sequence,thus,represents about 105 yr,suggesting high-frequency depositional *** of relative sea-level changes,built on shoreline trajectory,is 2-61 m,with an average of only 20 *** inc.sion during high-frequency and low-amplitude relative sealevel fall is mainly around the highstand *** diminishes rapidly up dip and down dip,and the resultant inc.sed valleys are narrow and *** sea-level fluctuations also result in small,stratigraphically complex shoreline sandstones that need special attention during hydrocarbon exploration.

关键词： Ferron Notom Delta time stratigraphy shoreline trajectory age dating Cretaceous Seaway of North america

Remotely sensing an object's rotational orientation using the orbital angular momentum of light(Invited Paper)

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Chinese Optics Letters 2017年第3期15卷 46-50页

作者： Giovanni Milione Ting Wang 韩静柏连发 Optical Networking and Sensing Department NEC Laboratories America Inc. Princeton NJ 08540 USA School of Electronic Engineering and Optoelectronic Technology Nanjing University of Science and Technology Nanjing 210094 China

Remotely sensing an object with light is essential for burgeoning technologies, such as autonomous vehicles. Here, an object＇s rotational orientation is remotely sensed using light＇s orbital angular momentum. An object is illuminated by and partially obstructs a Gaussian light beam. Using an SLM, the phase differences between the partially obstructed Gaussian light beam＇s constituent OAM modes are measured analogous to Stokes polar- imetry. It is shown that the phase differences are directly proportional to the object＇s rotational orientation. Comparison to the use of a pixelated camera and implementation in the millimeter wave regime are discussed.

关键词： Angular momentum Gaussian beams Millimeter waves

Screening of functionalized self-assembling peptide nanofiber scaffolds with angiogenic activity for endothelial cell growth

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Progress in Natural Science:Materials International 2011年第2期21卷 111-116页

作者： Akihiro HORII Olympus america inc. 3500 Corporate ParkwayCenter ValleyPA 18034USA

Promotion of angiogenesis in tissue engineering is of vital significance to the survival of transplants,which leads the way of tissue *** this study,we screened six short peptides with potentially angiogenic activities to functionalize self-assembling peptide nanofiber scaffolds RADA16-I(Ac-(RADA)4-CONH2).Fluorescence microscopy images of endothelial cells morphology on peptide scaffolds exhibited good cell attachments and Survivals on these six functionalized peptide scaffolds, especially on peptide scaffolds RAD/KLT and RAD/*** proliferation examination also confirmed the excellent cell growth on these two functionalized peptide *** peptide motifs KLT(KLTWQELYQLKYKGI) and PRG(PRGDSGYRGDS) had positive effects on endothelial cell survival and growth,which implied that these two peptides might have great promise for promoting angiogenesis in vitro and in vivo.

关键词： self-assembling peptide angiogenesis tissue engineering endothelial cell

Efficient Design of Multi-stage Cascade Waveband Separator

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光学学报 2003年第S1期23卷 621-622页

作者： Samrat Ganguly Rauf Izmailov Nan Tu Ting Wang NEC laboratories america Princeton USANEC Laboratories America Princeton USANEC Laboratories America Princeton USANEC Laboratories America Princeton USA

We propose a cascade system of filters for realizing a non-uniform waveband separation for optical networks. The use of such separation is required at the DEMUX stage in a optical OXC switching wavebands. The design o... 详细信息

关键词： of as Cr with be Efficient Design of Multi-stage Cascade Waveband Separator tree