Large-aperture 256-element fully populated random array for therapeutic ultrasound applications: Experimental study of its functionality and characterization of the radiated field

2021 ◽  
Vol 150 (4) ◽  
pp. A84-A84
Author(s):  
Oleg A. Sapozhnikov ◽  
Pavel B. Rosnitskiy ◽  
Shamil A. Asfandiyarov ◽  
Dmitry A. Nikolaev ◽  
Sergey A. Tsysar ◽  
...  
Keyword(s):  
Experimental Study ◽  
Therapeutic Ultrasound ◽  
Large Aperture ◽  
Random Array ◽  
Ultrasound Applications

Experimental Study of Ductile Fracture for Non-Aligned Multiple Flaws in a Plate

2009 ◽  
Author(s):  
Katsumasa Miyazaki ◽  
Kunio Hasegawa ◽  
Koichi Saito ◽  
Bostjan Bezensek
Keyword(s):  
Experimental Study ◽  
Ductile Fracture ◽  
Estimation Procedure ◽  
Maximum Load ◽  
Experimental Results ◽  
Collapse Load ◽  
Plate Specimen ◽  
Fracture Tests ◽  
Almost All

The fitness-for-service code requires the characterization of non-aligned multiple flaws for the flaw evaluation, which is performed using a flaw proximity rule. Worldwide almost all codes provide own proximity rule, often with unclear technical bases of the application of proximity rule to ductile fracture. To clarify the appropriate proximity rule for non-aligned multiple flaws in fully plastic fracture, fracture tests on flat plate specimen with non-aligned multiple through wall flaws were conducted at ambient temperature. The emphasis of this study was put on the flaw alignment rule, which determines whether non-aligned flaws are treated as independent or aligned onto the same plane for the purpose of flaw evaluations. The effects of the flaw separation and flaw size on the maximum load were investigated. The experimental results were compared with the estimations of the collapse load using the alignment rules in the ASME Section XI, BS7910 and API 579-1 codes. A new estimation procedure specific to the fully plastic fracture was proposed and compared with the comparison with the experimental results.

Experimental Study on Performance Characterization of Bolted Joint Under Transverse Loading

Measurement ◽  
2021 ◽  
pp. 109608
Author(s):  
Zhifeng Liu ◽  
Mingpo Zheng ◽  
Jinfei Guo ◽  
Hongyan Chu ◽  
Xing Yan ◽  
...  
Keyword(s):  
Experimental Study ◽  
Bolted Joint ◽  
Transverse Loading ◽  
Performance Characterization

A multimodal method for defect characterization of large-aperture optics

2021 ◽  
Author(s):  
Jian Chen ◽  
Weiyang Yu ◽  
Haifeng Zhou ◽  
Jian Zhang ◽  
Xi Wang ◽  
...  
Keyword(s):  
Defect Characterization ◽  
Large Aperture ◽  
Multimodal Method

scholarly journals How the Future of Sonography May Change the Outlook for Patients With Osteosarcoma

2018 ◽  
Vol 34 (5) ◽  
pp. 368-373
Author(s):  
Stacey Hoya ◽  
Linda Wogeman ◽  
Sara Allstadt ◽  
Glen King
Keyword(s):  
Quality Of Life ◽  
Focused Ultrasound ◽  
Treatment Plan ◽  
Treatment Options ◽  
Therapeutic Ultrasound ◽  
Bone Lesions ◽  
Pulsed Ultrasound ◽  
Low Intensity Pulsed Ultrasound ◽  
Ultrasound Applications

Sonography currently provides a variety of tools to support the diagnosis and treatment of osteosarcoma and, with the development of therapeutic ultrasound practices, could play an increasingly important role in the treatment of future patients with osteosarcoma. Currently, computed tomography, magnetic resonance imaging, and radiography are the preferred imaging modalities for bone lesions; treatment options for osteosarcoma primarily include highly toxic chemotherapies and surgeries that often result in limb loss. Unfortunately, osteosarcoma is rarely eliminated, and despite this, patients lose their lives after having a significant reduction in quality of life. Evolving therapies such as high-frequency focused ultrasound, ultrasound-enhanced delivery of photodynamic therapy, and low-intensity pulsed ultrasound may offer these patients an improved quality of life while also increasing efficacy of treatment. This canine case study illustrates the various ways in which sonography might contribute to the treatment plan for patients with osteosarcoma. It may provide a comparable model for the reimagining of treatment for future patients with osteosarcoma using a suite of therapeutic ultrasound applications.

CHARACTERIZATION OF A SURFACE-CHARGE MODULATION ELECTROFLUIDIC TRANSISTOR BY HYDRODYNAMIC MEASUREMENTS

2012 ◽  
Vol 11 (04) ◽  
pp. 1240021
Author(s):  
GUILLAUME LAFFITE ◽  
XU ZHENG ◽  
LOUIS RENAUD ◽  
FRANÇOIS BESSUEILLE ◽  
ELISABETH CHARLAIX ◽  
...  
Keyword(s):  
Experimental Study ◽  
Zeta Potential ◽  
Surface Charge ◽  
Gate Voltage ◽  
Silica Surface ◽  
Insulating Layer ◽  
Charge Regulation ◽  
Charge Modulation ◽  
Gating Effect

We present an experimental study on the electrofluidic transistor in this paper. A novel and easy way to integrate the transistor into a microchannel is developed. The performances of the insulating layer, especially the leakage current under gate voltage, are carefully characterized. The change of surface charge on silica surface by gate polarization is measured, however, by measuring the streaming current, the gating effect on zeta potential has not been observed. This result should imply new assumption in the understanding of the charge regulation in the electrical double layer under gate polarization.

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