Jacobs, New Zealand
Jacobs, New Zealand

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Continuous Adjustable Pulfrich Filter Spectacles are provided with lenses with continuously changeable optical densities, so that viewing of 2D movies is optimized for visualization in natural 3D. Method and means are disclosed for the continuous Adjustable Pulfrich Filter Spectacles to perform two independent optimizations to achieve optimized 3Deeps visual effects on 2D movies. First they compute the optical density setting of the lenses for optimal viewing of 2D movies as 3D. Then they continuously render the lenses of the spectacles to these optical densities optimized for characteristics of the electro-optical material from which the lenses of the spectacles are fabricated. The invention works for both 3DTV and 3D Cinema theater viewing.

Rollins K.M.,Brigham Young University | Kim J.,Jacobs
Journal of Geotechnical and Geoenvironmental Engineering | Year: 2010

Dynamic compaction (DC) is an economical approach for mitigating the hazard posed by collapsible soils particularly when they are deeper than 3-4 m. In this paper, case histories are provided for 15 projects at 10 locations in the United States where collapsible soils were treated with DC. For each site the soil properties, compaction procedures, and subsequent improvement are summarized. Although cohesionless and low-plasticity collapsible soils were successfully compacted, clay layers in the profile appeared to absorb energy and severely reduced compaction effectiveness. Correlations are presented for estimating the maximum depth of improvement, the degree of improvement versus depth, the depth of craters, and the level of vibration based on measurements made at the various sites. The compactive energy per volume was typically higher than for noncollapsible soils because collapsible soils are usually loose but relatively stiff. The maximum depth of improvement was similar to that for noncollapsible soils; however, significant scatter was observed about the best-fit line. Improvement was nonuniform with nearly 80% of the total improvement occurring within the top 60% of the improvement zone. The crater depth was related to a number of factors besides the drop energy including the number of drops, drop spacing, and contact pressure. The peak particle velocities were typically lower than those for noncollapsible soils at shorter distances, but the vibrations attenuated more slowly with distance. © 2010 ASCE.

Callini G.,Jacobs
Proceedings of the Annual Offshore Technology Conference | Year: 2015

Space is an extremely harsh environment that does not naturally support life. The challenges faced by the Space Program since its inception in the 1960's span from extreme temperature ranges, to pressurized systems, low pressure environments requiring remote operations, and countless other obstacles, including training of personnel for dealing with these hazardous environments in a controlled and safe manner. This paper provides an overview of the shared challenges, gives an overview of NASA's collaboration and innovation initiatives, and presents technologies and solutions envisioned to be beneficial to offshore industry. Copyright © (2015) by the Offshore Technology Conference All rights reserved.

Lakmaker S.,Jacobs
WIT Transactions on Ecology and the Environment | Year: 2015

Coal mining is one of the main industries in the Hunter Valley region of New South Wales (NSW), Australia. From an environmental perspective, dust and the contribution from mining is a key topic of discussion by industry, regulators and the community. While measured dust levels are influenced by many sources, the local mining industry generally aims to manage site emissions as far as is reasonably practicable. To assist with the management of dust emissions from coal mines in the Hunter Valley, the Australian Coal Association Research Programfunded a project (C19034) to develop an emission estimation and air dispersion modelling system. This paper describes the system and its key outcomes. The main objective of the system is to issue dust and meteorological forecasts so that operations can plan for and implement suitable emission reduction measures in advance of potentially adverse conditions. The system makes use of the CSIRO’s computer-based air dispersion model known as TAPM (The Air Pollution Model). This model is provided with estimates of mine site dust emissions and forecasts of meteorological conditions to predict ambient dust concentrations in the Hunter Valley, for up to two days in advance. Dust concentrations are represented as an air quality index, consistent with the approach adopted by the NSW Office of Environment and Heritage. Forecasts are delivered via a daily email and detailed system outputs are uploaded to a dedicated web-site that can be accessed at any time by relevant stakeholders. Interest in the system has grown since its development and the main factor for the take up appears to be the simplistic nature of the outputs. Further work could involve improving the emission estimation, especially during rainfall events, to improve the overall performance of the system. © 2015 WIT Press.

Baudish P.,Jacobs
Environmental Science and Engineering (Subseries: Environmental Science) | Year: 2015

As a result of prolonged drought conditions and declining raw water storages, six large capacity seawater reverse osmosis (SWRO) desalination plants were constructed to secure the water supplies of the five major Australian state capital cities. For a variety of reasons including capacity, local geology, site topography, environmental concerns as well as the construction programme and construction risk mitigation considerations associated with hostile marine conditions, tunnels were adopted for five of the SWRO plants, connecting the desalination plants with their open intakes and brine concentrate outfall systems. The tunnel system is a relatively new concept for SWRO intake and outfall design. The design of marine intake and outfall works is very complex because of the wide range of constraints that must be accommodated as well as the hydraulic interactions among the intake system, pretreatment facilities, desalination plant, and outfall system over a wide range of possible climatic, physical, and operational conditions. The challenges posed in the design and construction of tunnel and marine structures in high-energy open ocean environments are presented. These challenges include those associated with waves and currents, short- and long-term hydraulic considerations, durability and corrosion, biofouling control, and ongoing operation and maintenance. Different intake design approaches at two of the Australian SWRO plants are discussed. © Springer International Publishing Switzerland 2015.

Jacobs | Date: 2016-10-04

Vegetables, fresh.

Jacobs | Date: 2016-07-25


Several processes for the manufacture of thin-walled tubes are described, including: injection moulding an article and annealing the article, injection moulding a blend of a polymer and a high melt flow polymer, injection moulding a blend of a polymer and nanoparticles or nanocomposites. Using nanoparticles to improve ESCR and/or tear resistance of a polymer or blend is also disclosed.

Several processes for the manufacture of thin-walled tubes are described, including: injection moulding an article and annealing the article, injection moulding a blend of a polymer and a high melt flow polymer, injection moulding a blend of a polymer and nanoparticles or nanocomposites. Using nanoparticles to improve ESCR and/or tear resistance of a polymer or blend is also disclosed.

Agency: NSF | Branch: Fellowship | Program: | Phase: | Award Amount: 94.00K | Year: 2011


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