Search results for: S. Diebold

Items from 1 to 20 out of 43 results

article

Myosin II Synergizes with F-Actin to Promote DNGR-1-Dependent Cross-Presentation of Dead Cell-Associated Antigens

Oliver Schulz, Pavel Hanč, Jan P. Böttcher, Robbert Hoogeboom, more

Cell Reports > 2018 > 24 > 2 > 419-428

Conventional type 1 DCs (cDC1s) excel at cross-presentation of dead cell-associated antigens partly because they express DNGR-1, a receptor that recognizes exposed actin filaments on dead cells. In vitro polymerized F-actin can be used as a synthetic ligand for DNGR-1. However, cellular F-actin is decorated with actin-binding proteins, which could affect DNGR-1 recognition. Here, we demonstrate that...

article

Performance verification of the FlashCam prototype camera for the Cherenkov Telescope Array

F. Werner, C. Bauer, S. Bernhard, M. Capasso, more

Nuclear Instruments and Methods in Physics Research Section A: Accelerators,... > 2017 > 876 > C > 31-34

The Cherenkov Telescope Array (CTA) is a future gamma-ray observatory that is planned to significantly improve upon the sensitivity and precision of the current generation of Cherenkov telescopes. The observatory will consist of several dozens of telescopes with different sizes and equipped with different types of cameras. Of these, the FlashCam camera system is the first to implement a fully digital...

chapter

Asymmetrical conductance model to analyze resonant tunneling diode terahertz oscillators

S. Diebold, M. Fujita, T. Nagatsuma

2017 IEEE MTT-S International Microwave Symposium (IMS) > 1795 - 1797

2017 IEEE/MTT-S International Microwave Symposium - IMS 2017

A simple expression for the conductance-voltage characteristics of resonant tunneling diodes (RTD) is presented, which takes the asymmetry of the measured characteristics into account. It allows for a simple and accurate analysis of RTD-based oscillators to optimize them. Moreover, the dynamic capacitance of an RTD oscillator is calculated in order to describe its oscillation frequency. The measured...

article

High-speed error-free wireless data transmission using a terahertz resonant tunnelling diode transmitter and receiver

S. Diebold, K. Nishio, Y. Nishida, J.-Y. Kim, more

Electronics Letters > 2016 > 52 > 24 > 1999 - 2001

An error-free wireless transmission of a 9 Gbit/s on–off keying modulated signal as well as a 4 k video signal is demonstrated using resonant tunnelling diodes as active elements in both the transmitter and the receiver. The employed system and the modulation scheme enabling the high data rate are discussed.

article

Glucose‐dependent insulinotropic peptide secretion is induced by inflammatory stimuli in an interleukin‐1‐dependent manner in mice

F. Kahles, C. Meyer, S. Diebold, A. C. Foldenauer, more

Diabetes, Obesity and Metabolism > 18 > 11 > 1147 - 1151

Recently, glucagon‐like peptide‐1 (GLP‐1) levels have been found to be increased in response to inflammatory stimuli, leading to insulin secretion and prevention of hyperglycaemia during endotoxemia in mice. In the present study, we assess the relevance of the other incretin hormone, glucose‐dependent insulinotropic peptide (GIP), as a regulator of glucose metabolism under inflammatory conditions...

article

Dual stimulation of antigen presenting cells using carbon nanotube-based vaccine delivery system for cancer immunotherapy

Hatem A.F.M. Hassan, Lesley Smyth, Julie T.-W. Wang, Pedro M. Costa, more

Biomaterials > 2016 > 104 > C > 310-322

Although anti−cancer immuno−based combinatorial therapeutic approaches have shown promising results, efficient tumour eradication demands further intensification of anti−tumour immune response. With the emerging field of nanovaccinology, multi−walled carbon nanotubes (MWNTs) have manifested prominent potentials as tumour antigen nanocarriers. Nevertheless, the utilization of MWNTs in co−delivering...

chapter

Modulation schemes for resonant tunneling diodes to enhance the data-rate of wireless communications

S. Diebold, S. Nakai, S. K. Nishio, J-Y. Kim, more

2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) > 1 - 2

2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)

Resonant tunneling diode based transmitters for wireless communication systems in the terahertz frequency range around 300 GHz are investigated. Two possible modulation schemes are investigated to increase the data rate of the transmitter. An error-free data rate of 4 Gbps is achieved using the best modulation scheme and a RTD based receiver.

article

Carbon nanotubes' surface chemistry determines their potency as vaccine nanocarriers in vitro and in vivo

Hatem A.F.M. Hassan, Lesley Smyth, Noelia Rubio, Kulachelvy Ratnasothy, more

Journal of Controlled Release > 2016 > 225 > C > 205-216

Carbon nanotubes (CNTs) have shown marked capabilities in enhancing antigen delivery to antigen presenting cells. However, proper understanding of how altering the physical properties of CNTs may influence antigen uptake by antigen presenting cells, such as dendritic cells (DCs), has not been established yet. We hypothesized that altering the physical properties of multi-walled CNTs (MWNTs)-antigen...

chapter

Activation of Dendritic Cells by Toll-Like Receptors and C-Type Lectins

Sandra S. Diebold

Handbook of Experimental Pharmacology > Dendritic Cells > Biology of Dendritic Cells > 3-30

As sentinels of the immune system, dendritic cells (DC) scan their environment for the presence of pathogens. DC sense pathogens either directly or indirectly via endogenous factors such as cytokines and chemokines, which are produced by other cell types in response to infection. Although indirect signals in form of endogenous factors alert DC, direct activation of DC by pathogen-associated molecular...

chapter

Packaging of THz circuits using a HDPE lens and an impedance-matched carrier substrate

S. Diebold, S. Nakai, K. Nishio, K. Tsuruda, more

2015 Asia-Pacific Microwave Conference (APMC) > 1 > 1 - 3

2015 Asia-Pacific Microwave Conference (APMC)

A concept a for low-cost and robust packaging is presented. It is applied to a resonant tunneling diode (RTD) circuit fabricated on an InP substrate. The RTD circuit has been designed for wireless data transfer in the 300 GHz frequency range. The proposed system uses a substrate integrated lens made of high density polyethylene (HDPE) and a λ/4 matching layer to match the different wave impedances...

article

Making EBSD on water ice routine

D.J. PRIOR, K. LILLY, M. SEIDEMANN, M. VAUGHAN, more

Journal of Microscopy > 259 > 3 > 237 - 256

Electron backscatter diffraction (EBSD) on ice is a decade old. We have built upon previous work to select and develop methods of sample preparation and analysis that give >90% success rate in obtaining high‐quality EBSD maps, for the whole surface area (potentially) of low porosity (<15%) water ice samples, including very fine‐grained (<10 μm) and very large (up to 70 mm by 30 mm) samples...

chapter

Low noise amplifier MMICs for 325 GHz radiometric applications

S. Diebold, J. Kuhn, A. Hulsmann, A. Leuther, more

2014 Asia-Pacific Microwave Conference > 151 - 153

2014 Asia-Pacific Microwave Conference (APMC)

For radiometric application in the frequency range around 325 GHz, two low noise amplifier millimeter-wave monolithic integrated circuits have been developed. They use metamorphic high electron mobility transistors with a gate-length of 35 nm. The first amplifier only uses transistors in common-source configuration, whereas the second only employs transistors in cascode configuration. Their simulated...

chapter

Design and evaluation of realizable and compact low-impedance transmission lines for two top-metal-layer semiconductor processes

P. Pahl, S. Diebold, S. Krause, H. Gulan, more

2014 Asia-Pacific Microwave Conference > 52 - 54

2014 Asia-Pacific Microwave Conference (APMC)

This paper compares three different narrow 12.5Ω lines regarding their insertion loss. All three lines are realizable on a two top-metal-layer semiconductor process. It turns out that an artificial LC/ telegrapher line, composed of high and low impedance line elements, has the lowest loss of all three presented lines. The investigation, which is based on EM simulations is verified by S-Parameter measurements...

chapter

D-Band digital phase shifters for phased-array applications

D. Muller, S. Diebold, S. Reiss, H. Massler, more

2015 German Microwave Conference > 205 - 208

2015 German Microwave Conference (GeMiC)

This paper presents three different D-Band (110 – 170GHz) phase shifters for high-bandwidth communication and radar applications. The proposed phase shifters offer phase shifts of 180°, 90° and 45° and show only very little amplitudeand phase-error over the full D-Band. Furthermore based on the measurement results of the individual phase shifters the group factor of an eight element phased array system...

article

P241 Usefulness of the 21-gene assay to guide adjuvant chemotherapy decision-making: Geneva experience

A. Bodmer, A. Hugli, S. Diebold Berger, L. Favet, more

The Breast > 2015 > 24 > Supplement 1 > S108

article

IL-6-abhängige GLP-1-Sekretion unter inflammatorischen Stimuli

F. Kahles, C. Meyer, J. Möllmann, S. Diebold, more

Medizinische Klinik - Intensivmedizin und Notfallmedizin > 2015 > 110 > 6 > 462-464

Redaktion M. Buerke, Siegen S. Kluge, Hamburg

chapter

A broadband amplifier MMIC with 105 to 140 GHz bandwidth

S. Diebold, P. Pahl, S. Wagner, H. Massler, more

2013 Asia-Pacific Microwave Conference Proceedings (APMC) > 354 - 356

2013 Asia Pacific Microwave Conference - (APMC 2013)

A compact and broadband high-gain amplifier has been developed and is presented in this paper. It is realized as millimeter-wave monolithic integrated circuit (MMIC) and makes use of metamorphic high electron mobility transistor (mHEMT) technology. The amplifier employs an advanced power combining approach allowing for broadband designs. At 115 GHz, the MMIC provides a gain of 26dB and at 120 GHz...

chapter

Balanced medium power amplifier MMICs from 200 to 270 GHz

J. Langst, S. Diebold, H. Massler, S. Wagner, more

2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) > 1 - 3

2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2013)

Balanced amplifier monolithic millimeter-wave integrated circuits (MMICs) for application in high resolution radar and wireless communication with an output power of up to 7.5 dBm at 210 GHz are shown in this paper. The small-signal gain is more than 13 dB from 200 to 270 GHz and more than 23 dB between 200 and 240 GHz, respectively. Airbridge microstrip transmission lines are used for matching, biasing...

chapter

AlGaN/GaN-based variable gain amplifiers for W-band operation

S. Diebold, D. Muller, D. Schwantuschke, S. Wagner, more

2013 IEEE MTT-S International Microwave Symposium Digest (MTT) > 1 - 4

2013 IEEE/MTT-S International Microwave Symposium - MTT 2013

In this paper three versions of a variable gain amplifier (VGA) monolithic millimetre-wave integrated circuit (MMIC) are presented. They make use of 100 nm gate-length AlGaN/GaN-based high electron mobility transistors (HEMTs) grown on SiC. The MMICs operate in the 75 to 110 GHz band and have a centre-frequency of 94 GHz. Different phase compensation techniques, which are proposed in literature are...

chapter

Probe based antenna measurements up to 325 GHz for upcoming millimeter-wave applications

H. Gulan, S. Beer, S. Diebold, C. Rusch, more

2013 International Workshop on Antenna Technology (iWAT) > 228 - 231

2013 International Workshop on Antenna Technology (iWAT)

In this paper a probe based measurement setup is presented that allows the characterization of antennas in the frequency-range between 220 GHz and 325 GHz. The radiation pattern, as well as the gain and the return loss of the antenna under test (AUT) can be measured. The limits of the system in terms of accuracy and dynamic range are given. To demonstrate its functionality a 240 GHz patch-antenna...

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INFONA - science communication portal

Search results for: S. Diebold

Myosin II Synergizes with F-Actin to Promote DNGR-1-Dependent Cross-Presentation of Dead Cell-Associated Antigens

Performance verification of the FlashCam prototype camera for the Cherenkov Telescope Array

Asymmetrical conductance model to analyze resonant tunneling diode terahertz oscillators

High-speed error-free wireless data transmission using a terahertz resonant tunnelling diode transmitter and receiver

Glucose‐dependent insulinotropic peptide secretion is induced by inflammatory stimuli in an interleukin‐1‐dependent manner in mice

Dual stimulation of antigen presenting cells using carbon nanotube-based vaccine delivery system for cancer immunotherapy

Modulation schemes for resonant tunneling diodes to enhance the data-rate of wireless communications

Carbon nanotubes' surface chemistry determines their potency as vaccine nanocarriers in vitro and in vivo

Activation of Dendritic Cells by Toll-Like Receptors and C-Type Lectins

Packaging of THz circuits using a HDPE lens and an impedance-matched carrier substrate

Making EBSD on water ice routine

Low noise amplifier MMICs for 325 GHz radiometric applications

Design and evaluation of realizable and compact low-impedance transmission lines for two top-metal-layer semiconductor processes

D-Band digital phase shifters for phased-array applications

P241 Usefulness of the 21-gene assay to guide adjuvant chemotherapy decision-making: Geneva experience

IL-6-abhängige GLP-1-Sekretion unter inflammatorischen Stimuli

A broadband amplifier MMIC with 105 to 140 GHz bandwidth

Balanced medium power amplifier MMICs from 200 to 270 GHz

AlGaN/GaN-based variable gain amplifiers for W-band operation

Probe based antenna measurements up to 325 GHz for upcoming millimeter-wave applications

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