Distribution of size, structure and number of vacant regions in a high-intensity mosaic

1985 ◽  
Vol 70 (2) ◽  
pp. 237-261 ◽  
Author(s):  
Peter Hall
Keyword(s):  
High Intensity ◽  
Size Structure

scholarly journals Thoughts on Urban Planning of Big Cities in China Caused by the COVID-19 Epidemic

2020 ◽  
Vol 198 ◽  
pp. 04018
Author(s):  
Huiyan Zhao
Keyword(s):  
Public Health ◽  
Urban Planning ◽  
Urban Development ◽  
High Intensity ◽  
Size Structure ◽  
Economic Benefits ◽  
Wuhan City ◽  
Public Health Emergencies ◽  
Big Cities ◽  
The Way

Public health emergencies such as the COVID-19 outbreak has made all industries to reexamine the way the cities have always grown. Urban planning is no exception. Based on the analysis of the development track and phenomenon of Wuhan City, this paper puts forward the planning thinking of the development of China’s big cities. According to the study, it is urgent to study the suitable size, structure and form of big cities. The consistent practice of high-intensity development needs to stop. Urban development should pay more attention to the space that can not directly generate economic benefits.

A New High Intensity Grid Cap for RCA-EMU-3 Electron Microscopes

1968 ◽  
Vol 26 ◽  
pp. 316-317
Author(s):  
George Christov ◽  
Bolivar J. Lloyd
Keyword(s):  
Electron Beam ◽  
Electron Microscope ◽  
High Voltage ◽  
High Intensity ◽  
Electron Gun ◽  
Tungsten Filament ◽  
Fluorescent Screen ◽  
Electron Microscopes ◽  
Pass Through ◽  
Ground Potential

A new high intensity grid cap has been designed for the RCA-EMU-3 electron microscope. Various parameters of the new grid cap were investigated to determine its characteristics. The increase in illumination produced provides ease of focusing on the fluorescent screen at magnifications from 1500 to 50,000 times using an accelerating voltage of 50 KV.The EMU-3 type electron gun assembly consists of a V-shaped tungsten filament for a cathode with a thin metal threaded cathode shield and an anode with a central aperture to permit the beam to course the length of the column. The cathode shield is negatively biased at a potential of several hundred volts with respect to the filament. The electron beam is formed by electrons emitted from the tip of the filament which pass through an aperture of 0.1 inch diameter in the cap and then it is accelerated by the negative high voltage through a 0.625 inch diameter aperture in the anode which is at ground potential.

Structure and composition of metal particles in Pt-Sn/Al2O3 bimetallic catalysts

1990 ◽  
Vol 48 (4) ◽  
pp. 278-279
Author(s):  
A. Sachdev ◽  
J. Schwank
Keyword(s):  
Bimetallic Catalysts ◽  
Bimetallic Catalyst ◽  
Size Structure ◽  
High Surface ◽  
High Surface Area ◽  
Metal Particles ◽  
Alloy Formation ◽  
Particle Size Range ◽  
Oxide Supports ◽  
Petroleum Fractions

Platinum - tin bimetallic catalysts have been primarily utilized in the chemical industry in the catalytic reforming of petroleum fractions. In this process the naphtha feedstock is converted to hydrocarbons with higher octane numbers and high anti-knock qualities. Most of these catalysts contain small metal particles or crystallites supported on high surface area insulating oxide supports. The determination of the structure and composition of these particles is crucial to the understanding of the catalytic behavior. In a bimetallic catalyst it is important to know how the two metals are distributed within the particle size range and in what way the addition of a second metal affects the size, structure and composition of the metal particles. An added complication in the Pt-Sn system is the possibility of alloy formation between the two elements for all atomic ratios.

260: High Intensity Focused Ultrasound Combined with Endocrine Therapy in Treating High or Intermediate Risk Prostate Cancer

2006 ◽  
Vol 175 (4S) ◽  
pp. 86-86
Author(s):  
Makoto Sumitomo ◽  
Junichi Asakuma ◽  
Yasumasa Hanawa ◽  
Kazuhiko Nagakura ◽  
Masamichi Hayakawa
Keyword(s):  
Prostate Cancer ◽  
Endocrine Therapy ◽  
High Intensity ◽  
Focused Ultrasound ◽  
High Intensity Focused Ultrasound ◽  
Intermediate Risk ◽  
Risk Prostate Cancer

1400: Early Clinical Experience Using High-Intensity Focused Ultrasound for the Treatment of Renal Tumours

2005 ◽  
Vol 173 (4S) ◽  
pp. 379-380
Author(s):  
James E. Kennedy ◽  
Rowland O. Illing ◽  
Feng Wu ◽  
Gail R. ter Haar ◽  
Rachel R. Phillips ◽  
...  
Keyword(s):  
Clinical Experience ◽  
High Intensity ◽  
Focused Ultrasound ◽  
High Intensity Focused Ultrasound ◽  
Early Clinical Experience ◽  
Renal Tumours

High-Intensity Focused Ultrasound

1994 ◽  
Vol 4 (2) ◽  
pp. 383-395 ◽  
Author(s):  
Narendra T. Sanghvi ◽  
Robert H. Hawes
Keyword(s):  
High Intensity ◽  
Focused Ultrasound ◽  
High Intensity Focused Ultrasound

Abstract #593 High Intensity Focused Ultrasound (HIFU) in the Treatment of Thyroid Nodules. Efficacy, Side-Effects and Predictive Factors of Clinical Outcome

2019 ◽  
Vol 25 ◽  
pp. 304-305
Author(s):  
Enrico Papini ◽  
Agnese Persichetti ◽  
Antonio Bianchini ◽  
Carmela Coccaro ◽  
Marco Chianelli ◽  
...  
Keyword(s):  
Side Effects ◽  
Clinical Outcome ◽  
Predictive Factors ◽  
High Intensity ◽  
Focused Ultrasound ◽  
Thyroid Nodules ◽  
High Intensity Focused Ultrasound

Experimental study of the propagation of an apertured high-intensity laser beam in Kerr-active CS 2

1997 ◽  
Vol 44 (9) ◽  
pp. 1671-1681
Author(s):  
S. Camacho-Lopez ◽  
R. Ramos-Garcia ◽  
M. J. Damzen
Keyword(s):  
Experimental Study ◽  
Laser Beam ◽  
High Intensity ◽  
High Intensity Laser ◽  
Intensity Laser

Das Prostatakarzinom: aktuelle Diagnostik und Therapiestandard

Praxis ◽  
2016 ◽  
Vol 105 (16) ◽  
pp. 971-977
Author(s):  
Jan Brachlow ◽  
Martin Kälin ◽  
Marco Randazzo ◽  
Beat Förster ◽  
Hubert John
Keyword(s):  
High Intensity ◽  
Focused Ultrasound ◽  
High Intensity Focused Ultrasound ◽  
Psa Test ◽  
Eine Hohe ◽  
Psa Screening ◽  
Sekundäre Hormontherapie

Zusammenfassung. Das Prostatakarzinom zeigt eine hohe Prävalenz und ist daher für die behandelnden Ärzte medizinisch, aber auch gesundheitspolitisch relevant. PSA-Screening senkt die karzinomspezifische Mortalität, ist jedoch aufgrund der hohen Prävalenz mit einer Überdiagnostik verbunden. Dies fordert im Gegenzug einen verantwortungsbewussten Umgang mit dem PSA-Test («smarter screening»). Durch die robotergestützte Prostatektomie steht eine Therapie mit geringer Morbidität zur Behandlung des lokalisierten Prostatakarzinoms zur Verfügung. Das fokale Behandlungskonzept der HIFU (high-intensity focused ultrasound) ist vielversprechend, jedoch noch klinisch experimentell und sollte im Rahmen von Studien angeboten werden. Die Behandlungsmöglichkeiten beim metastasierten Prostatakarzinom wurden entscheidend vervielfältigt. Chemotherapie und die sekundäre Hormontherapie werden voraussichtlich vermehrt in früheren Phasen der Krankheit eine Rolle spielen, wodurch die Therapie für den einzelnen Patienten immer komplexer wird und individuell angepasst werden muss.

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