Profiling Systems Articles

Teshekpuk Lake is the largest lake in the Alaskan Arctic and the third largest lake in the state. Given the importance of this region to an abundance of native wildlife and expected environmental changes associated with projected sea-level rise, coastline erosion and oil and gas development, the Teshekpuk Lake Observatory (TLO) was established as an effort to gain a ...

Apr. 6, 2018

By BeadedStream

Creating a Borehole Database A series of exploration boreholes were drilled. Samples were taken every five feet and sieved in order to determine the relative percentages of sand, gravel and clay (or other non-sand/gravel material). These samples were restricted to the interval below the base of the soil profile and the top of the bedrock. The borehole locations, stratigraphy (see Table 1), ...

Mar. 22, 2018

By RockWare, Inc.

Large areas of the Earth's surface are experiencing rising maximum temperatures, which affect virtually every ecosystem on the planet, including ice sheets and tropical forests that play major roles in regulating the biosphere, scientists have reported. Earth's ...

Jan. 2, 2018

By ScienceDaily

High wafer throughput Fast etch rates and low clean overheads mean higher tool uptime. Higher uptime means more wafers through your fab Profile control Vertical facets means higher device efficiency – more light out for power in Smooth surfaces Smooth surfaces means less light scattering – more usable ...

Nov. 21, 2017

By Oxford Instruments plc

Although mixing in lakes has significant environmental and ecological implications, knowledge of mixing dynamics for shallow floodplain lakes has received little attention. In this study, hydrological, thermal and isotopic investigations were undertaken to provide evidence for the mixing in the large, shallow floodplain Poyang Lake (China). Depth profiles of water velocity, water temperature ...

Sep. 16, 2016

By IWA Publishing

Read our recent article showing the comparison of TOF-SIMS and Plasma Profiling TOFMS (PP-TOFMS) depth profiles of SiGe, metal silicides,  photovoltaics complex metal/oxide stacks, and PZT, published in Journal of Vacuum Science & Technology B. And discover the unique capabilities of PP-TOFMS as a fast depth profiling tool providing reference free semi-quantification and spontaneous ...

Mar. 23, 2016

By HORIBA Europe GmbH

Seldom studied before, the vertical profile velocity is indicative of the flood process and nutrient transportation process. In this paper, a substitution of cross section hydraulic radius with vertical depth was made to the Manning formula, which was then applied in the vertical profile velocity determination. Simultaneously, the determination accuracy and its relationship with hydraulic ...

Mar. 2, 2016

By IWA Publishing

The highly variable performance of artificial monolayers in reducing evaporation from water storages has been attributed to wind speed and wave turbulence. Other factors operating at the interfacial boundary layer have seldom been considered. In this paper, two physical shade covers differing in porosity and reflectivity were suspended over 10 m diameter water tanks to attenuate wind and wave ...

Jul. 16, 2015

By IWA Publishing

Low energy ion implantation and low–temperature microwave annealing were used in this study to fabricate ultra–shallow junctions (USJs). A two–steps modulatory microwave annealing (MWA) process was employed to recover and activate a boron (400 eV) implanted silicon wafer. In the first step, 2.4 kW high power MWA was used to regrow an amorphous layer with the crystal silicon phase and thus enhance ...

Dec. 4, 2014

By Inderscience Publishers

Continuously monitoring and managing manganese (Mn) concentrations in drinking water supply reservoirs are paramount for water suppliers since high soluble Mn loads lead to discoloration of potable water. Despite the Mn level currently being manually sampled throughout the year, in subtropical monomictic lakes such as Hinze Dam, critical Mn concentrations in the epilimnion, where the water is ...

Nov. 5, 2014

By IWA Publishing

Positron lifetime measurements are used as a tool for obtaining a deeper understanding of positron behaviour in solids and calibrating the Chalmers Pulsed Positron Beam. Experiments are executed for positron energies up to 13 keV corresponding to the maximum penetration depth in Au of roughly 400 nm and measurement results are compared to PENELOPE simulations. Reference towards Makhov modelling ...

Mar. 30, 2014

By Inderscience Publishers

San Felipe, Panama A port expansion was planned off the coast of San Felipe, Panama. GeoView was tasked to provide bathymetric information within the survey area, map the top of rock and evaluate the thickness of the overlying marine sediments. The survey area was approximately 300 hectares in size. GeoView collected sub-bottom profiling and bathymetry data along transect lines spaced ...

Jan. 16, 2014

By GeoView, Inc.

Polk County, Florida Bathymetric and sub-bottom surveys were conducted within a clay settling pond at a Phosphate mine in Central Florida. Prior to the geophysical survey, a depression or slump had formed along the northern dam of the pond. The purpose of the study was to map various sediment layers within the pond to help determine if the depressions or slumps were related to sinkhole ...

Jan. 16, 2014

By GeoView, Inc.

The present paper analyses the effects of entropy generation in Magnetohydrodynamic (MHD) flow over a permeable stretching sheet embedded in a porous medium in the presence of viscous dissipation. Analytical solutions of the momentum and the energy equations are obtained in terms of Kummer's function using suitable transformations. The velocity and temperature profiles are obtained for various ...

Aug. 8, 2013

By Inderscience Publishers

The present paper deals with the study of slip effects on entropy generation in viscous incompressible flow over a stretching sheet subjected to a transverse magnetic field in the presence of thermal radiation. By using suitable similarity transformations, the momentum and the energy equations are transformed into nonlinear ordinary differential equations and series solutions are obtained using ...

Aug. 8, 2013

By Inderscience Publishers

1 Introduction Experiments were conducted in a simulated boundary layer representative of rural terrain with a few shrubs and trees in neutral conditions. Vertical profiles of concentration were measured downstream of a rectangular building for various stack heights, emission characteristics and building positions. The model scale in the wind tunnel was 1/200 of full scale. Full ...

Jun. 14, 2013

By Cambridge Environmental Research Consultants (CERC)

This paper investigates the entropy generation rates in an unsteady flow of a variable viscosity incompressible fluid through a porous pipe with uniform suction at the surface. The nonlinear governing equations for momentum and energy balance are derived and solved numerically using a semi–implicit finite difference scheme in order to obtain the fluid velocity and temperature profiles. Numerical ...

May 27, 2013

By Inderscience Publishers

The composition and microstructure of the concrete–steel interface influences the critical chloride content for initiation of pitting corrosion and these characteristics may differ from those of the bulk concrete. This paper describes the development of a methodology for chloride profiling along the interface by means of LA–ICP–MS. For semi–quantitative analysis, ...

Dec. 2, 2012

By Inderscience Publishers

We observed the turbulence and vertical profile of temperature in and above the roughness sublayer (RS) using a tower, a tethered balloon and a Doppler sodar in Himeji City. A 3–D ultrasonic anemometer–thermometer was sited at a height of 54 m on the tower. The present results showed that in the RS, the ratio of friction velocity to wind speed, u* /u, observed under unstable ...

Jun. 17, 2012

By Inderscience Publishers

This paper presents the application of the second law of thermodynamics analysis to magnetohydrodynamic (MHD) boundary layer flow and heat transfer over a flat plate with a convective surface boundary condition. Using a similarity solution technique and shooting quadrature, the velocity and temperature profiles are obtained numerically and utilised to compute the entropy generation number. The ...

Mar. 15, 2012

By Inderscience Publishers