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Near real-time nautical depth mapping via horizontal optical fibers and distributed acoustic sensing

Buisman, M. (author), Draganov, D.S. (author), Kirichek, Alex (author)

Safe navigation in ports and waterways subjected to siltation requires nautical depth monitoring. For this purpose, surveying vessels equipped with a zero-offset echo sounder and intrusive point measurements are frequently used. Because these measurements depend on the availability of a surveying vessel and require access to quay walls, such as...

journal article 2024

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Monitoring tidal water-column changes in ports using distributed acoustic sensing

Buisman, M. (author), Draganov, D.S. (author), Kirichek, Alex (author)

We show results of of using distributed acoustic sensing (DAS) for continuous relative water-column changes monitoring by relating the oscillating frequencies to measurements of a nearby tidal-station. The oscillations have a great qualitative agreement with the tidal-station, having a period of 12 hours and 25 minutes. No calibration is...

conference paper 2023

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Natural and artificial fractures response characterisation in large-size samples using distributed acoustic sensing technology

Martuganova, E.M. (author), Buisman, M. (author), Barnhoorn, A. (author)

We conducted laboratory experiments using large-scale samples (height: 0.47, diameter: 0.39 m) of basalt and marble coiled with telecommunication fibre. The fibre optical cable was converted to an array of densely spaced receivers (0.01 m) using distributed acoustic sensing (DAS) technology, and the source was placed on top of the samples. We...

conference paper 2023

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Monitoring shear-stress changes using seismic measurements from controlled sources and ambient noise and optical fibres

Buisman, M. (author), Martuganova, E.M. (author), Draganov, D.S. (author), Kirichek, Alex (author)

Monitoring the nautical depth is vital for the safe passage of water transport. Port authorities worldwide have different navigable depth criteria and use various methods to ensure the safe navigability and manoeuvrability of ships in ports and waterways. These measurements often require a surveying vessel and are limited in repeatability and...

conference paper 2022

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Continuous monitoring of the depth of the water‑mud interface using distributed acoustic sensing

Buisman, M. (author), Martuganova, E.M. (author), Kiers, Tjeerd (author), Draganov, D.S. (author), Kirichek, Alex (author)

Purpose<br/><br/>Current surveying techniques used by port authorities to estimate the nautical depth are limited in depth resolution and temporal resolution. Because of this, certain heavily occupied quay walls cannot be optimised in terms of utilisation. Therefore, a permanent continuous measuring system with a higher depth resolution is...

journal article 2022

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Water-depth estimation using propeller noise by distributed acoustic sensing

Buisman, M. (author), Martuganova, E.M. (author), Kirichek, Alex (author), Draganov, D.S. (author)

This work shows the potential of using DAS for continuous water-depth monitoring by using the difference in acoustic energy in water and mud. The advantage over conventional methods is that our method can be used continuously and remotely, given that there is traffic nearby. Due to the low cost of fibres and the far-reaching dynamic range of...

conference paper 2022

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Continuous electron shuttling by sulfide oxidizing bacteria as a novel strategy to produce electric current

de Rink, Rieks (author), Lavender, Micaela (author), Liu, Dandan (author), Klok, Johannes B.M. (author), Sorokin, Dimitry Y. (author), ter Heijne, Annemiek (author), Buisman, Cees J.M. (author)

Sulfide oxidizing bacteria (SOB) are widely applied in industry to convert toxic H2S into elemental sulfur. Haloalkaliphilic planktonic SOB can remove sulfide from solution under anaerobic conditions (SOB are ‘charged’), and release electrons at an electrode (discharge of SOB). The effect of this electron shuttling on product formation and...

journal article 2022

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Distinguishing pure histopathological growth patterns of colorectal liver metastases on CT using deep learning and radiomics: a pilot study

Starmans, Martijn P.A. (author), Buisman, Florian E. (author), Renckens, Michel (author), Willemssen, François E.J.A. (author), van der Voort, Sebastian R. (author), Groot Koerkamp, B. (author), Grünhagen, Dirk J. (author), Niessen, W.J. (author), Vermeulen, Peter B. (author)

Histopathological growth patterns (HGPs) are independent prognosticators for colorectal liver metastases (CRLM). Currently, HGPs are determined postoperatively. In this study, we evaluated radiomics for preoperative prediction of HGPs on computed tomography (CT), and its robustness to segmentation and acquisition variations. Patients with...

journal article 2021

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Fluid mud monitoring using optical fibers combined with DAS and DTS

Buisman, M. (author), Kiers, Tjeerd (author), Kirichek, Alex (author), Pefkos, M. (author), Draganov, D.S. (author)

abstract 2021

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Non-Intrusive Characterization and Monitoring of Fluid Mud: Laboratory Experiments with Seismic Techniques, Distributed Acoustic Sensing (DAS), and Distributed Temperature Sensing (DTS)

Draganov, D.S. (author), Ma, X. (author), Buisman, M. (author), Kiers, Tjeerd (author), Heller, H.K.J. (author), Kirichek, Alex (author)

In ports and waterways, the bathymetry is regularly surveyed for updating navigation charts ensuring safe transport. In port areas with fluid-mud layers, most traditional surveying techniques are accurate but are intrusive and provide one-dimensional measurements limiting their application. Current non-intrusive surveying techniques are less...

book chapter 2021

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Catalytic Cooperation between a Copper Oxide Electrocatalyst and a Microbial Community for Microbial Electrosynthesis

Chatzipanagiotou, Konstantina Roxani (author), Soekhoe, Virangni (author), Jourdin, L. (author), Buisman, Cees J.N. (author), Bitter, J. Harry (author), Strik, David P.B.T.B. (author)

Electrocatalytic metals and microorganisms can be combined for CO2 conversion in microbial electrosynthesis (MES). However, a systematic investigation on the nature of interactions between metals and MES is still lacking. To investigate this nature, we integrated a copper electrocatalyst, converting CO2 to formate, with microorganisms,...

journal article 2021

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CO₂ Conversion by Combining a Copper Electrocatalyst and Wild-type Microorganisms

Chatzipanagiotou, Konstantina Roxani (author), Jourdin, L. (author), Buisman, Cees J.N. (author), Strik, David P.B.T.B. (author), Bitter, Johannes H. (author)

Carbon dioxide (CO₂) can be converted to valuable products using different catalysts, including metal or biological catalysts (e. g. microorganisms). Some products formed by metal electrocatalysts can be further utilized by microorganisms, and therefore catalytic cooperation can be envisioned. To prevent cumbersome separations, it...

journal article 2020

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Increasing the Selectivity for Sulfur Formation in Biological Gas Desulfurization

De Rink, Rieks (author), Klok, Johannes B.M. (author), Van Heeringen, Gijs J. (author), Sorokin, Dimitry Y. (author), Ter Heijne, Annemiek (author), Zeijlmaker, Remco (author), Mos, Yvonne M. (author), De Wilde, Vinnie (author), Keesman, Karel J. (author), Buisman, Cees J.N. (author)

In the biotechnological desulfurization process under haloalkaline conditions, dihydrogen sulfide (H ₂ S) is removed from sour gas and oxidized to elemental sulfur (S ₈ ) by sulfide-oxidizing bacteria. Besides S ₈ , the byproducts sulfate (SO ₄ ^2- ) and thiosulfate (S ₂ O <sub...

journal article 2019

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Passive and active reconfigurable scan-beam hollow patch reflectarray antennas

Hajian, M. (author), Kuijpers, B. (author), Buisman, K. (author), Akhnoukh, A. (author), Pelk, M. (author), De Vreede, L.C.N. (author), Zijdeveld, J. (author), Ligthart, L.P. (author), Spitas, C. (author)

The design concept of passive and active reconfigurable reflectarray antennas has been proposed and tested. The antenna elements in the array are identical hollowed patches. In the first phase of study the slots are loaded with a SMD capacitor to set the required phase shift needed for array implementation. Simulations show promising results....

journal article 2012

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Device Realization, Characterization and Modeling for Linear RF Applications

Buisman, K. (author)

This thesis work addresses semiconductor device technology, characterization and modeling solutions that support the development of future generations of mobile phones, which are able to handle various wireless services in flexible manner. Today’s plurality of high data-rate communication signals requires high linearity and efficiency of the...

doctoral thesis 2011

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A novel LTCC differentially Fed UWB antenna for the 60 GHz band

Yang, B. (author), Yarovoy, A.G. (author), Valavan, A.S.E. (author), Buisman, K. (author), Shoykhetbrod, O. (author)

In this paper a novel differentially fed Ultra-Wide Band (UWB) antenna in low-temperature co-fired ceramics (LTCC) technology to be used in the 60 GHz band for integrated RF front-ends is presented. The antenna is based on the aperture stacked patch fed via H-shaped aperture to achieve more than 10 GHz operational bandwidth. The antenna is fed...

journal article 2011

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Improved RF Devices for Future Adaptive Wireless Systems Using Two-Sided Contacting and A1N Cooling

Nanver, L.K. (author), Schellevis, H. (author), Scholtes, T.L.M. (author), La Spina, L. (author), Lorito, G. (author), Sarubbi, F. (author), Gonda, V. (author), Popadic, M. (author), Buisman, K. (author), De Vreede, L.C.N. (author)

This paper reviews special RF/microwave silicon device implementations in a process that allows two-sided contacting of the devices: the back-wafer contacted silicon-on-glass (SOG) substrate-transfer technology (STT) developed at DIMES. In this technology, metal transmission lines can be placed on the low-loss glass substrate, while the...

journal article 2009

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Active Harmonic Load–Pull With Realistic Wideband Communications Signals

Marchetti, M. (author), Pelk, M.J. (author), Buisman, K. (author), Neo, W.C.E. (author), Spirito, M. (author), De Vreede, L.C.N. (author)

A new wideband open-loop active harmonic load–pull measurement approach is presented. The proposed method is based on wideband data-acquisition and wideband signal-injection of the incident and device generated power waves at the frequencies of interest. The system provides full, user defined, in-band control of the source and load reflection...

journal article 2008

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A 67 dBm OIP3 Multistacked Junction Varactor

Huang, C. (author), Buisman, K. (author), Nanver, L.K. (author), Sarubbi, F. (author), Popadic, M. (author), Scholtes, T.L.M. (author), Schellevis, H. (author), Larson, L.E. (author), De Vreede, L.C.N. (author)

journal article 2008

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Enabling Low-Distortion Varactors for Adaptive Transmitters

Huang, C. (author), De Vreede, L.C.N. (author), Sarubbi, F. (author), Popadic, M. (author), Buisman, K. (author), Qureshi, J. (author), Marchetti, M. (author), Akhnoukh, A. (author), Scholtes, T.L.M. (author), Larson, L.E. (author), Nanver, L.K. (author)

journal article 2008