Phosphorus Functionalised Polymeric Scale Inhibitors, Further Developments and Field Deployment

2012 ◽  
Author(s):  
Malcolm John Todd ◽  
Jonathan James Wylde ◽  
Catherine Jane Strachan ◽  
Gordon Moir ◽  
Alex Thornton ◽  
...  
Keyword(s):  
Field Deployment

scholarly journals Opening Up Transactive Systems: Introducing TESS and Specification in a Field Deployment

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3970
Author(s):  
Marie-Louise Arlt ◽  
David P. Chassin ◽  
L. Lynne Kiesling
Keyword(s):  
Power Systems ◽  
Distribution System ◽  
Supply And Demand ◽  
System Level ◽  
Market Mechanisms ◽  
Bidding Strategies ◽  
Incentive Problems ◽  
Tariff Structures ◽  
Field Deployment ◽  
Residential Demand

Transactive energy systems (TS) use automated device bidding to access (residential) demand flexibility and coordinate supply and demand on the distribution system level through market processes. In this work, we present TESS, a modularized platform for the implementation of TS, which enables the deployment of adjusted market mechanisms, economic bidding, and the potential entry of third parties. TESS thereby opens up current integrated closed-system TS, allows for the better adaptation of TS to power systems with high shares of renewable energies, and lays the foundations for a smart grid with a variety of stakeholders. Furthermore, despite positive experiences in various pilot projects, one hurdle in introducing TS is their integration with existing tariff structures and (legal) requirements. In this paper, we therefore describe TESS as we have modified it for a field implementation within the service territory of Holy Cross Energy in Colorado. Importantly, our specification addresses challenges of implementing TS in existing electric retail systems, for instance, the design of bidding strategies when a (non-transactive) tariff system is already in place. We conclude with a general discussion of the challenges associated with “brownfield” implementation of TS, such as incentive problems of baseline approaches or long-term efficiency.

Design, testing and field deployment of a composite clamp for pipeline repairs

2016 ◽  
Vol 45 (2) ◽  
pp. 81-94 ◽  
Author(s):  
W. S. Sum ◽  
K. H. Leong ◽  
L. P. Djukic ◽  
T. K. T. Nguyen ◽  
A. Y. L. Leong ◽  
...  
Keyword(s):  
Field Deployment

scholarly journals Modernizing the Toolkit for Arthropod Bloodmeal Identification

Insects ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 37
Author(s):  
Erin M. Borland ◽  
Rebekah C. Kading
Keyword(s):  
Nuclear Dna ◽  
Point Of Care ◽  
Isotope Analysis ◽  
Digital Pcr ◽  
Lessons Learned ◽  
Molecular Techniques ◽  
Melting Analysis ◽  
Field Deployment ◽  
Blood Meal Identification ◽  
Bloodmeal Identification

Understanding vertebrate–vector interactions is vitally important for understanding the transmission dynamics of arthropod-vectored pathogens and depends on the ability to accurately identify the vertebrate source of blood-engorged arthropods in field collections using molecular methods. A decade ago, molecular techniques being applied to arthropod blood meal identification were thoroughly reviewed, but there have been significant advancements in the techniques and technologies available since that time. This review highlights the available diagnostic markers in mitochondrial and nuclear DNA and discusses their benefits and shortcomings for use in molecular identification assays. Advances in real-time PCR, high resolution melting analysis, digital PCR, next generation sequencing, microsphere assays, mass spectrometry, and stable isotope analysis each offer novel approaches and advantages to bloodmeal analysis that have gained traction in the field. New, field-forward technologies and platforms have also come into use that offer promising solutions for point-of-care and remote field deployment for rapid bloodmeal source identification. Some of the lessons learned over the last decade, particularly in the fields of DNA barcoding and sequence analysis, are discussed. Though many advancements have been made, technical challenges remain concerning the prevention of sample degradation both by the arthropod before the sample has been obtained and during storage. This review provides a roadmap and guide for those considering modern techniques for arthropod bloodmeal identification and reviews how advances in molecular technology over the past decade have been applied in this unique biomedical context.

Low ECD High Performance Invert Emulsion Drilling Fluids: Lab Development and Field Deployment

2021 ◽  
Author(s):  
Vikrant Wagle ◽  
Abdullah Yami ◽  
Michael Onoriode ◽  
Jacques Butcher ◽  
Nivika Gupta
Keyword(s):  
High Performance ◽  
Filter Cake ◽  
Drilling Fluid ◽  
Field Performance ◽  
Superior Performance ◽  
Core Material ◽  
Drilling Fluids ◽  
Invert Emulsion ◽  
Field Deployment ◽  
Permeability Studies

Abstract The present paper describes the results of the formulation of an acid-soluble low ECD organoclay-free invert emulsion drilling fluid formulated with acid soluble manganese tetroxide and a specially designed bridging package. The paper also presents a short summary of field applications to date. The novel, non-damaging fluid has superior rheology resulting in lower ECD, excellent suspension properties for effective hole cleaning and barite-sag resistance while also reducing the risk of stuck pipe in high over balance applications. 95pcf high performance invert emulsion fluid (HPIEF) was formulated using an engineered bridging package comprising of acid-soluble bridging agents and an acid-soluble weighting agent viz. manganese tetroxide. The paper describes the filtration and rheological properties of the HPIEF after hot rolling at 300oF. Different tests such as contamination testing, sag-factor analysis, high temperature-high pressure rheology measurements and filter-cake breaking studies at 300oF were performed on the HPIEF. The 95pcf fluid was also subjected to particle plugging experiments to determine the invasion characteristics and the non-damaging nature of the fluids. The 95pcf HPIEF exhibited optimal filtration properties at high overbalance conditions. The low PV values and rheological profile support low ECDs while drilling. The static aging tests performed on the 95pcf HPIEF resulted in a sag factor of less than 0.53, qualifying the inherent stability for expected downhole conditions. The HPIEF demonstrated resilience to contamination testing with negligible change in properties. Filter-cake breaking experiments performed using a specially designed breaker fluid system gave high filter-cake breaking efficiency. Return permeability studies were performed with the HPIEF against synthetic core material, results of which confirmed the non-damaging design of the fluid. The paper thus demonstrates the superior performance of the HPIEF in achieving the desired lab and field performance.

Who Am I?

2021 ◽  
Vol 5 (3) ◽  
pp. 1-32
Author(s):  
Natã M. Barbosa ◽  
Gang Wang ◽  
Blase Ur ◽  
Yang Wang
Keyword(s):  
Pervasive Computing ◽  
Physical World ◽  
Web Browsing ◽  
Privacy Concerns ◽  
Internet Users ◽  
Profiling Techniques ◽  
Positive Experiences ◽  
Field Deployment ◽  
Incremental Construction ◽  
And Control

To enable targeted ads, companies profile Internet users, automatically inferring potential interests and demographics. While current profiling centers on users' web browsing data, smartphones and other devices with rich sensing capabilities portend profiling techniques that draw on methods from ubiquitous computing. Unfortunately, even existing profiling and ad-targeting practices remain opaque to users, engendering distrust, resignation, and privacy concerns. We hypothesized that making profiling visible at the time and place it occurs might help users better understand and engage with automatically constructed profiles. To this end, we built a technology probe that surfaces the incremental construction of user profiles from both web browsing and activities in the physical world. The probe explores transparency and control of profile construction in real time. We conducted a two-week field deployment of this probe with 25 participants. We found that increasing the visibility of profiling helped participants anticipate how certain actions can trigger specific ads. Participants' desired engagement with their profile differed in part based on their overall attitudes toward ads. Furthermore, participants expected algorithms would automatically determine when an inference was inaccurate, no longer relevant, or off-limits. Current techniques typically do not do this. Overall, our findings suggest that leveraging opportunistic moments within pervasive computing to engage users with their own inferred profiles can create more trustworthy and positive experiences with targeted ads.

scholarly journals Sediment dynamics on a steep, megatidal, mixed sand-gravel-cobble beach

2014 ◽  
Vol 2 (1) ◽  
pp. 117-152 ◽  
Author(s):  
A. E. Hay ◽  
L. Zedel ◽  
N. Stark
Keyword(s):  
Wide Band ◽  
Sediment Dynamics ◽  
Coarse Grained ◽  
Bay Of Fundy ◽  
Wave Forcing ◽  
Structure Of Flow ◽  
Median Diameter ◽  
Field Deployment ◽  
Bed Material ◽  
Cobble Beach

Abstract. Results are presented from a pilot study of shoreface sediment dynamics on a steep, poorly sorted, coarse-grained, mega-tidal beach at the head of the Bay of Fundy, Nova Scotia, Canada. The experiment involved the first field deployment of a prototype wide- band, pulse-coherent, bistatic acoustic Doppler profiling system. Measurements of the vertical structure of flow and turbulence above a sloping bed, as well as bed material velocity, demonstrate the capabilities of this instrument vis-a-vis studies of nearshore sediment dynamics at the field scale. The second focus of the paper is the surprising observation that the surficial sediment median diameter, across the lower two-thirds of the intertidal zone, underwent a pronounced decrease when wave forcing was more energetic, compared to values observed during calmer conditions. The explanation for this result appears to involve the formation – in wave-dominated conditions – of O(1 m)-wavelength, 20 cm high ripples on the rising tide, which are then planed flat by the swash and/or the shorebreak on the subsequent ebb.

scholarly journals Atmospheric aerosol characterization with a ground-based SPEX spectropolarimetric instrument

2014 ◽  
Vol 7 (12) ◽  
pp. 4341-4351 ◽  
Author(s):  
G. van Harten ◽  
J. de Boer ◽  
J. H. H. Rietjens ◽  
A. Di Noia ◽  
F. Snik ◽  
...  
Keyword(s):  
Optical Thickness ◽  
Atmospheric Aerosols ◽  
Complex Refractive Index ◽  
Random Noise ◽  
Aerosol Optical Thickness ◽  
Clear Sky ◽  
Field Deployment ◽  
Scattering Phase Function ◽  
Aerosol Parameters ◽  
Low Degrees

Abstract. Characterization of atmospheric aerosols is important for understanding their impact on health and climate. A wealth of aerosol parameters can be retrieved from multi-angle, multi-wavelength radiance and polarization measurements of the clear sky. We developed a ground-based SPEX instrument (groundSPEX) for accurate spectropolarimetry, based on the passive, robust, athermal, and snapshot spectral polarization modulation technique, and is hence ideal for field deployment. It samples the scattering phase function in the principal plane in an automated fashion, using a motorized pan/tilt unit and automatic exposure time detection. Extensive radiometric and polarimetric calibrations were performed, yielding values for both random noise and systematic uncertainties. The absolute polarimetric accuracy at low degrees of polarization is established to be ~5 × 10−3. About 70 measurement sequences have been performed throughout four clear-sky days at Cabauw, the Netherlands. Several aerosol parameters were retrieved: aerosol optical thickness, effective radius, and complex refractive index for fine and coarse mode. The results are in good agreement with the colocated AERONET products, with a correlation coefficient of ρ = 0.932 for the total aerosol optical thickness at 550 nm.

Field Deployment of a Rigless Cable-Deployed Electric Submersible Pump Using a Vertical Wellhead

2018 ◽  
Vol 33 (03) ◽  
pp. 437-448
Author(s):  
Brian A. Roth ◽  
Jinjiang J. Xiao ◽  
Mohannad Abdelaziz ◽  
John Mack ◽  
Yahya Sarawaq ◽  
...  
Keyword(s):  
Submersible Pump ◽  
Field Deployment ◽  
Electric Submersible Pump
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