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1

Automated Support for da Vinci Surgical System.  

National Technical Information Service (NTIS)

While adoption of da Vinci systems has been rapid worldwide, there exists a wide variance in surgical procedure performance impacting care quality, cost and patient safety negatively, due in part to inefficient training practices and limited mechanisms fo...

J. Berkley

2011-01-01

2

Anderson-Hynes dismembered pyeloplasty performed using the da Vinci robotic system  

Microsoft Academic Search

Introduction. To evaluate and describe the use of the da Vinci robotic system in performing laparoscopic Anderson-Hynes pyeloplasty.Technical Considerations. Between June 2001 and February 2002, 9 patients underwent laparoscopic Anderson-Hynes pyeloplasty with the da Vinci telerobotic surgical system. The diagnosis was based on the presenting symptoms and radiologic imaging findings. The technique for da Vinci-assisted Anderson-Hynes pyeloplasty followed the same

Matthew T Gettman; Richard Neururer; Georg Bartsch; Reinhard Peschel

2002-01-01

3

Da Vinci's Mona Lisa  

Microsoft Academic Search

There has been some controversy over the true subject portrayed in Leonardo da Vinci’s Mona Lisa. In particular, there are\\u000a suggestions that the painting is in fact a self-portrait. In this paper, we analyze the shapes of the features in the Mona\\u000a Lisa and a known self-portrait of Leonardo da Vinci using active shape models. We conclude that the two

Dennis Lin; Jilin Tu; Shyamsundar Rajaram; Zhenqiu Zhang; Thomas S. Huang

2006-01-01

4

Robotic laparoscopic surgery: a comparison of the da Vinci and Zeus systems  

Microsoft Academic Search

Objectives. To evaluate two currently available robotic surgical systems in performing various urologic laparoscopic procedures in an acute porcine model.Methods. Robotic laparoscopic surgery was performed in 14 swine. Data were compared between the da Vinci Robotic System and the Zeus Robotic System.Results. During laparoscopic nephrectomy, the da Vinci System (n = 6) had a significantly shorter total operating room time

Gyung Tak Sung; Inderbir S Gill

2001-01-01

5

[Initial experience with da Vinci robotic system in vascular surgery].  

PubMed

Robotic operational systems improve accuracy, control of and skilful management of surgical procedures up to levels unachievable by a human factor itself. A surgeon is also allowed to conduct the types of miniinvasive procedures, which cannot be conducted using contemporary technologies. High degree of the procedure's safety can be achieved. Currently, the robotic surgical systems are used in top clinics worldwide and the concept of the robotic operating theatre is considered to become standard for some procedures in future. In October 2005, a multispecialist robotic centre was opened in the Hospital Na Homolce, which then created a new qualitative standard in the miniinvasive surgical management. The authors present the initial group of patients, who were operated from November 2005 to January 2006 with employement of the da Vinci robotic system, listing its pros and cons. PMID:16805339

Stádler, P; Vitásek, P; Matous, P

2006-05-01

6

The First Korean Experience of Telemanipulative Robot-Assisted Laparoscopic Cholecystectomy Using the da Vinci System  

PubMed Central

With the advancement of laparoscopic instruments and computer sciences, complex surgical procedures are expected to be safely performed by robot assisted telemanipulative laparoscopic surgery. The da Vinci system (Intuitive Surgical, Mountain View, CA, USA) became available at the many surgical fields. The wrist like movements of the instrument's tip, as well as 3-dimensional vision, could be expected to facilitate more complex laparoscopic procedure. Here, we present the first Korean experience of da Vinci robotic assisted laparoscopic cholecystectomy and discuss the introduction and perspectives of this robotic system.

Kang, Chang Moo; Chi, Hoon Sang; Hyeung, Woo Jin; Kim, Kyung Sik; Choi, Jin Sub; Kim, Byong Ro

2007-01-01

7

Computer-Assisted Laparoscopic Colon Resection With the Da Vinci ® System: Our First Experiences  

Microsoft Academic Search

PURPOSE: Telerobotic surgery is a developing and promising modality that highly improves the laparoscopic dexterity. We have performed more than 100 laparoscopic and thoracoscopic procedures since December 2002 with the aid of the Da Vinci ® robotic system. This study was designed to assess the value of robots in colonic laparoscopic surgery. We present our first cases of robotic-assisted colectomies.

Chris Braumann; Christoph A. Jacobi; Charalambos Menenakos; Ulrich Borchert; Jens C. Rueckert; Joachim M. Mueller

2005-01-01

8

The Design of Intelligent Monitoring System Based on DaVinci Platform  

Microsoft Academic Search

In this paper, an embedded video monitoring system for intelligent control is presented. This presented system uses DaVinci-based high-speed TMS320DM6467 chip as hardware component and uses Embedded Linux Operating System as software component, in addition, it takes target detection and tracking algorithms as its core. So it can not only meet the requirements of real-time video processing and heavy computation

Pan Zhao; Zhi liang Jiang

2012-01-01

9

Surgical techniques: robot-assisted laparoscopic colposacropexy with the da Vinci ® surgical system  

Microsoft Academic Search

Colposacropexy is the gold-standard operation for repair of apical vaginal support defects. While it is feasible to perform\\u000a this operation using conventional laparoscopic techniques, a limited number of surgeons have mastered the advanced minimally\\u000a invasive skills that are required. Introduction of the da Vinci® robotic system with instruments that have improved dexterity and precision and a camera system with three-dimensional imaging

Catherine A. Matthews

2009-01-01

10

The patterns and costs of the Da Vinci robotic surgery system in a large academic institution  

Microsoft Academic Search

The da Vinci ™Robotic System (dVRS) is the latest advancement in laparoscopic surgery allowing the surgeon more accurate and\\u000a precise control of instrumentation with an added three-dimensional image. Technology comes with a price, $1.3 million. Due\\u000a to charitable contributions from the Durham family, the University of Nebraska was the eighth Medical Center in the USA to\\u000a obtain a dVRS in

Rhonda Prewitt; Victor Bochkarev; Corrigan L. McBride; Sonja Kinney; Dmitry Oleynikov

2008-01-01

11

A performance study comparing manual and robotically assisted laparoscopic surgery using the da Vinci system  

Microsoft Academic Search

Background: The objective of this study was to compare the efficacy of the da Vinci robotic system using both the three-dimensional view (3D) and two-dimensional (2D) view options with traditional manually assisted laparoscopic techniques in performing standardized exercises. Methods: To evaluate surgical efficiency in the use of robotically assisted and manual laparoscopic surgery for standardized exercises six, last-year medical students

G. Hubens; H. Coveliers; L. Balliu; M. Ruppert; W. Vaneerdeweg

2003-01-01

12

Robotics revolutionizing surgery: the Intuitive Surgical “Da Vinci” system  

Microsoft Academic Search

The introduction of laparoscopy in surgery offered clear advantages to patients. Surgeons, however, had to deal with various types of problems inherent to the essential differences in surgical approach. One of these problems, reduced dexterity, was solved at the end of the previous decade by the introduction of robotic surgery systems. Discusses the backgrounds for development of the Intuitive Surgical

Ivo A. M. J. Broeders; Jelle Ruurda

2001-01-01

13

Leonardo da Vinci's Geometric Sketches  

NSDL National Science Digital Library

How do you solve a problem like solids, mathematically speaking? Well, you could use this rather fascinating resource provided by the Convergence magazine. Offered as an educational resource by the Mathematical Association of America (MAA), this particular resource brings together the work of the Franciscan friar Luca Pacioli (c.1445-1509) and the geometric sketches of Leonardo Da Vinci. Both men were interested in geometry, and this piece offers up a number of plate facsimiles of illustrations created by Da Vinci. Here visitors will find an introduction to this educational resource, along with illustrations of cubes, octahedrons, and cylinders. The accompanying article was written by Frank J. Swetz, and it is easy to see how these materials could be incorporated into a classroom discussion about the history of mathematics.

14

A Comparison of Laparoscopic Pyeloplasty Performed with the daVinci Robotic System versus Standard Laparoscopic Techniques: Initial Clinical Results  

Microsoft Academic Search

Purpose: Laparoscopic pyeloplasty is an accepted therapy for primary ureteropelvic junction obstruction (UPJO), however difficulty associated with intracorporeal suturing has limited widespread clinical application. We report our initial experience of laparoscopic pyeloplasty performed with the daVinci robotic system matched to procedures performed with standard laparoscopic techniques.Patients and Methods: From June 2001 until August 2001, six patients underwent definitive management of

Matthew T Gettman; Reinhard Peschel; Richard Neururer; Georg Bartsch

2002-01-01

15

Qualitative and quantitative analysis of the learning curve of a simulated surgical task on the da Vinci system  

Microsoft Academic Search

Background Robotic telemanipulation systems provide solutions to the problems of less dexterity and visual constraints of minimally invasive surgery (MIS). However, their influence over surgeons’ dexterity and learning curve needs to be assessed. We present motion analysis as an objective method to measure performance and learning progress. Methods Thirteen surgeons completed five synthetic small bowel anastomoses using the da Vinci

J. D. Hernandez; S. D. Bann; Y. Munz; K. Moorthy; V. Datta; S. Martin; A. Dosis; F. Bello; A. Darzi; T. Rockall

2004-01-01

16

Minimally invasive mitral valve repair using the da Vinci robotic system  

Microsoft Academic Search

BackgroundMinimally invasive mitral valve repair with a shortened hospital stay and quick return to an active lifestyle is the ultimate goal for robotically assisted surgery. We evaluated our da Vinci robotically assisted mitral valve repair experience toward achieving this goal.

Antone J Tatooles; Patroklos S Pappas; Paul J Gordon; Mark S Slaughter

2004-01-01

17

Successful treatment of esophageal metastasis from hepatocellular carcinoma using the da Vinci robotic surgical system  

PubMed Central

A 59-year-old man with metastatic an esophageal tumor from hepatocellular carcinoma (HCC) presented with progressive dysphagia. He had undergone liver transplantation for HCC three and a half years prevously. At presentation, his radiological and endoscopic examinations suggested a submucosal tumor in the lower esophagus, causing a luminal stricture. We performed complete resection of the esophageal metastases and esophagogastrostomy reconstruction using the da Vinci robotic system. Recovery was uneventful and he was been doing well 2 mo after surgery. ?-fetoprotein level decreased from 510 ng/mL to 30 ng/mL postoperatively. During the follow-up period, he developed a recurrent esophageal stricture at the anastomosis site and this was successfully treated by endoscopic esophageal dilatation.

Boonnuch, Wiroon; Akaraviputh, Thawatchai; Nino, Carnivale; Yiengpruksawan, Anusak; Christiano, Arthur Andrew

2011-01-01

18

Successful treatment of esophageal metastasis from hepatocellular carcinoma using the da Vinci robotic surgical system.  

PubMed

A 59-year-old man with metastatic an esophageal tumor from hepatocellular carcinoma (HCC) presented with progressive dysphagia. He had undergone liver transplantation for HCC three and a half years prevously. At presentation, his radiological and endoscopic examinations suggested a submucosal tumor in the lower esophagus, causing a luminal stricture. We performed complete resection of the esophageal metastases and esophagogastrostomy reconstruction using the da Vinci robotic system. Recovery was uneventful and he was been doing well 2 mo after surgery. ?-fetoprotein level decreased from 510 ng/mL to 30 ng/mL postoperatively. During the follow-up period, he developed a recurrent esophageal stricture at the anastomosis site and this was successfully treated by endoscopic esophageal dilatation. PMID:21765971

Boonnuch, Wiroon; Akaraviputh, Thawatchai; Nino, Carnivale; Yiengpruksawan, Anusak; Christiano, Arthur Andrew

2011-06-27

19

First experiences with the da Vinci™ operating robot in thoracic surgery  

Microsoft Academic Search

Objectives: The da Vinci™ surgical robotic system was purchased at our institution in June 2001. The aim of this trial was to evaluate the applicability of the da Vinci™ operation robot for general thoracic procedures. Methods: The da Vinci™ surgical system consists of a console connected to a surgical arm cart, a manipulator unit with two instrument arms and a

J. Bodner; H. Wykypiel; G. Wetscher; T. Schmid

2004-01-01

20

Leonardo da vinci e la matematica  

Microsoft Academic Search

Sunto  Lo scopo della presente Nota è quello di illustrare come Leonardo da Vinci, contrariamente a quanto sostengono molti autori,\\u000a possedesse un eccezionale talento matematico, una mentalità tipica dei matematici unita ad una sorprendente originalità. Numerose\\u000a sue idee furono riprese e realizzate nei secoli successivi.

I. S. Fenyö

1985-01-01

21

The Digital Restoration of Da Vinci's Sketches  

Microsoft Academic Search

A sketch, found in one of Leonardo da Vinci's notebooks and covered by the written notes of this genius, has been recently restored. The restoration reveals a possible self-portrait of the artist, drawn when he was young. Here, we discuss the discovery of this self-portrait and the procedure used for restoration. Actually, this is a restoration performed on the digital

Amelia Sparavigna

2009-01-01

22

The real code of leonardo da vinci.  

PubMed

Leonardo da Vinci was born in Italy. Among the researchers and scientists, he is favourably known for his remarkable efforts in scientific work. His investigations of atherosclerosis judiciously combine three separate fields of research. In 1506, he finished his masterpiece, painting of Mona Lisa. A careful clinical examination of the famous painting reveals a yellow irregular leather-like spot at the inner end of the left upper eyelid and a soft bumpy well-defined swelling of the dorsum of the right hand beneath the index finger about 3 cm long. This is probably the first case of familial hypercholesterolemia (FH). The FH code of Leonardo da Vinci was given immense consideration by scientists like Carl Muller, who described the xanthomas tuberosum and angina pectoris. On the contrary, Akira Endo searched for microbial metabolites that would inhibit HMG-CoA reductase, the rate-limiting enzyme in the synthesis of cholesterol and finally, Michael Brown and Joseph Goldstein published a remarkable series of elegant and insightful papers in the 70s and 80s. They established that the cellular uptake of low-density lipoprotein (LDL) essentially requires the LDL receptor. In conclusion: this was the real Code of Leonardo da Vinci. PMID:19924278

Ose, Leiv

2008-02-01

23

Placement of 125I implants with the da Vinci robotic system after video-assisted thoracoscopic wedge resection: A feasibility study  

Microsoft Academic Search

Purpose: To evaluate the feasibility of using the da Vinci robotic system for radioactive seed placement in the wedge resection margin of pigs' lungs. Methods and materials: Video-assisted thoracoscopic wedge resection was performed in the upper and lower lobes in pigs. Dummy ¹²⁵I seeds embedded in absorbable sutures were sewn into the resection margin with the aid of the da

Julianna. Pisch; Scott J. Belsley; Robert Ashton; Lin Wang; Rudolph Woode; Cliff Connery

2004-01-01

24

Depth asymmetry in da Vinci stereopsis.  

PubMed

We investigated processes that determine the depth localization of monocular points which have no unambiguous depth. It is known that horizontally adjacent binocular objects are used in depth localization and for a distance of 25-40 min arc monocular points localize to the leading edge of a depth constraint zone, which is an area defined by the visibility lines between which the points in the real world must be. We demonstrate that this rule is not valid in complex depth scenes. Adding other disparate objects to the scene changes the localization of the monocular point in a way that cannot be explained by the da Vinci explanation of monocular-binocular integration. The effect of additional disparate objects is asymmetric in depth: a crossed object does not affect the da Vinci effect but an uncrossed object biases the depth localization of monocular objects to uncrossed direction. We conclude that a horizontally adjacent binocular plane does not completely determine the depth localization of a monocular point and that depth spreading from other binocular elements biases the localization process. PMID:8994582

Häkkinen, J; Nyman, G

1996-12-01

25

Early experience with the da Vinci® surgical system robot in gynecological surgery at King Abdulaziz University Hospital  

PubMed Central

Background: The purpose of this study was to review our experience and the challenges of using the da Vinci® surgical system robot during gynecological surgery at King Abdulaziz University Hospital. Methods: A retrospective study was conducted to review all cases of robot-assisted gynecologic surgery performed at our institution between January 2008 and December 2010. The patients were reviewed for indications, complications, length of hospital stay, and conversion rate, as well as console and docking times. Results: Over the three-year period, we operated on 35 patients with benign or malignant conditions using the robot for a total of 62 surgical procedures. The docking times averaged seven minutes. The mean console times for simple hysterectomy, bilateral salpingo-oophorectomy, and bilateral pelvic lymphadenectomy were 125, 47, and 62 minutes, respectively. In four patients, laparoscopic procedures were converted to open procedures, giving a conversion rate of 6.5%. All of the conversions were among the first 15 procedures performed. The average hospital stay was 3 days. Complications occurred in five patients (14%), and none were directly related to the robotic system. Conclusion: Our early experience with the robot show that with proper training of the robotic team, technical difficulty with the robotic system is limited. There is definitely a learning curve that requires performance of gynecological surgical procedures using the robot.

Sait, Khalid H

2011-01-01

26

Leonardo Da Vinci and stroke - vegetarian diet as a possible cause.  

PubMed

Leonardo da Vinci (April 15, 1452 to May 2, 1519) was an Italian Renaissance architect, musician, anatomist, inventor, engineer, sculptor, geometer, and painter. It has been gleaned from the many available historical documents that da Vinci was a vegetarian who respected and loved animals, and that he suffered from right hemiparesis in the last 5 years of his life. A vegetarian diet has both positive and negative influences on the cerebrovascular system. In this report, a possible relation between a vegetarian diet and stroke is discussed from various perspectives as related to Leonardo da Vinci's stroke. PMID:20375518

Oztürk, Serefnur; Altieri, Marta; Troisi, Pina

2010-04-06

27

Uncomplicated full term pregnancy after da Vinci-assisted laparoscopic myomectomy  

Microsoft Academic Search

Laparoscopic surgery with the assistance of the da Vinci robotic system has been recently introduced in gynaecology, as this new technology provides three-dimensional vision and easier suture capability. This study reports, for the first time, the case of an uncomplicated full term pregnancy after laparoscopic myomectomy with the assistance of the da Vinci robotic system. The patient was a 35-year-old

Silvina Bocca; Laurel Stadtmauer; Sergio Oehninger

2007-01-01

28

Placement of {sup 125}I implants with the da Vinci robotic system after video-assisted thoracoscopic wedge resection: A feasibility study  

SciTech Connect

Purpose: To evaluate the feasibility of using the da Vinci robotic system for radioactive seed placement in the wedge resection margin of pigs' lungs. Methods and materials: Video-assisted thoracoscopic wedge resection was performed in the upper and lower lobes in pigs. Dummy {sup 125}I seeds embedded in absorbable sutures were sewn into the resection margin with the aid of the da Vinci robotic system without complications. In the 'loop technique,' the seeds were placed in a cylindrical pattern; in the 'longitudinal,' they were above and lateral to the resection margin. Orthogonal radiographs were taken in the operating room. For dose calculation, Variseed 66.7 (Build 11312) software was used. Results: With looping seed placement, in the coronal view, the dose at 1 cm from the source was 97.0 Gy; in the lateral view it was 107.3 Gy. For longitudinal seed placement, the numbers were 89.5 Gy and 70.0 Gy, respectively. Conclusion: Robotic technology allows direct placement of radioactive seeds into the resection margin by endoscopic surgery. It overcomes the technical difficulties of manipulating in the narrow chest cavity. With the advent of robotic technology, new options in the treatment of lung cancer, as well as other malignant tumors, will become available.

Pisch, Julianna [Department of Radiation Oncology and Physics, Beth Israel and St. Luke's-Roosevelt Medical Center, New York, NY (United States)]. E-mail: jpisch@bethisraelny.org; Belsley, Scott J. [Department of Thoracic Surgery, Beth Israel and St. Luke's-Roosevelt Medical Center, New York, NY (United States); Ashton, Robert [Department of Thoracic Surgery, Beth Israel and St. Luke's-Roosevelt Medical Center, New York, NY (United States); Wang Lin [Department of Radiation Oncology and Physics, Beth Israel and St. Luke's-Roosevelt Medical Center, New York, NY (United States); Woode, Rudolph [Department of Radiation Oncology and Physics, Beth Israel and St. Luke's-Roosevelt Medical Center, New York, NY (United States); Connery, Cliff [Department of Thoracic Surgery, Beth Israel and St. Luke's-Roosevelt Medical Center, New York, NY (United States)

2004-11-01

29

The Potential da Vinci in All of Us  

NSDL National Science Digital Library

The study of the human form is fundamental to both science and art curricula. For vertebrates, perhaps no feature is more important than the skeleton to determine observable form and function. As Leonard da Vinci's famous Proportions of the Human Figure (Virtruvian Man) illustrates, the size, shape, and proportions of the human body are defined by bones and their articulations. In this unit that focuses on the human skeleton, students are introduced to these concepts by asking them both to study da Vinci's drawing and build their own model of the human skeleton. Units on animal camouflage and architecture are also presented to further support the art and science connection.

Petto, Andrew; Petto, Sarah

2009-02-01

30

Women and Technical Professions. Leonardo da Vinci Series: Good Practices.  

ERIC Educational Resources Information Center

This document profiles programs for women in technical professions that are offered through the European Commission's Leonardo da Vinci program. The following programs are profiled: (1) Artemis and Diana (vocational guidance programs to help direct girls toward technology-related careers); (2) CEEWIT (an Internet-based information and…

Commission of the European Communities, Brussels (Belgium). Directorate-General for Education and Culture.

31

The Potential da Vinci in All of Us  

ERIC Educational Resources Information Center

|The study of the human form is fundamental to both science and art curricula. For vertebrates, perhaps no feature is more important than the skeleton to determine observable form and function. As Leonard da Vinci's famous Proportions of the Human Figure (Virtruvian Man) illustrates, the size, shape, and proportions of the human body are defined…

Petto, Sarah; Petto, Andrew

2009-01-01

32

Studying and Working Abroad. Leonardo da Vinci Series: Good Practices.  

ERIC Educational Resources Information Center

|This document profiles recent successful examples of students studying and working abroad as part of the European Commission's Leonardo da Vinci program, which is designed to give students across the European Union the opportunity to experience vocational training in a foreign country. The following examples are presented: (1) 3 Finnish students…

Commission of the European Communities, Brussels (Belgium). Directorate-General for Education and Culture.

33

A Film on Leonardo da Vinci by Luciano Emmer  

Microsoft Academic Search

Leonardo da Vinci probably did not consider the possibility of realizing images with real movement. Many centuries later, however, the author's father, Luciano Emmer, had the idea of reinterpreting the images of the famous artist and scientist using the technique of cinema.

Michele Emmer

2009-01-01

34

Training and Health. Leonardo da Vinci Series: Good Practices.  

ERIC Educational Resources Information Center

|This document profiles programs in the fields of health and medicine that are offered through the European Commission's Leonardo da Vinci program. The following programs are profiled: (1) CYTOTRAIN (a transnational vocational training program in cervical cancer screening); (2) Apollo (a program of open and distance learning for paramedical…

Commission of the European Communities, Brussels (Belgium). Directorate-General for Education and Culture.

35

Using DaVinci Technology for Digital Video Devices  

Microsoft Academic Search

It's not practical for one SoC processor to fit all equipment and meet today's aggressive performance, power, and cost targets. The DaVinci integrated portfolio of processors, software, and tools offers support for developing a broad spectrum of optimized digital video equipment.

Deepu Talla; Jeremiah Golston

2007-01-01

36

Amplatzer Closure of Atrial Septal Defect and da Vinci Robot-Assisted Repair of Vascular Ring  

Microsoft Academic Search

Technology for minimally invasive approaches to congenital heart disease is a rapidly evolving field. This case report reviews a novel approach to combining two of the newer technologies available to treat a pediatric patient with an atrial septal defect (ASD) and a vascular ring. This report is the first to describe the use of the da Vinci surgical system to

R. G. Ohye; E. J. Devaney; J. Graziano; A. Ludomirsky

2004-01-01

37

Da Vinci robotic-assisted radical hysterectomy procedural guide  

Microsoft Academic Search

The Da Vinci robotic surgical platform has rapidly been adopted by skilled surgeons for procedures in gynecologic oncology.\\u000a The lack of specific procedural guides and surgical atlases for robotic surgery in gynecologic oncology produces challenges\\u000a in the education of trainees in their role both as the assistant and as the console surgeon. This procedural guide was developed\\u000a in order to

Cecelia Boardman; Adam Huggins; Kathryn Hull

38

Surgical treatment of parietal defects with "da Vinci" surgical robot  

PubMed Central

The robotic surgery has come through the development of telemedicine and minimally invasive surgery concepts, being developed in the military medicine by NASA during the years 1970-1980. The purpose of this paper is to briefly present our experience in the new field of the robotic surgery, by analyzing the results obtained over a lot of 20 patients operated with the “da Vinci” robot within the last 5 years in the Clinical Emergency Hospital Bucharest for various abdominal defects

Vasilescu, D; Paun, S

2012-01-01

39

Leonardo da Vinci and Kethem-Kiveris vena.  

PubMed

In the drawing of coitus by Leonardo da Vinci are pictured the contemporary hypotheses regarding this act. The authors analyze the mamillaruteral connection depicted by the artist and grow up to believe that this is a hypothetical kiveris vena, female vein described by Anatomist Master Nicolai Physicus from the Salerno School. The Hebrew roots were found in the name. The connection is described also by Mondino in The Anathomia. The same connection can be found in the picture of the pregnant woman in Fasciculus Medicinæ by Johannes De Ketham. PMID:23391978

Dolezal, Antonín; Skorepova-Honzlova, Zita; Jelen, Karel

2012-01-01

40

Da Vinci's codex and the anatomy of healthcare.  

PubMed

We usually display a laid-back approach to medical jargon throughout our theatre work. The word 'perioperative' is built from the Greek word 'peri' (around) and the Latin 'operari' (to work). Latin and Greek became the prefixed language of choice for Leonardo da Vinci, and his research was pivotal in determining the way in which surgical procedures are documented. Ancient manuscripts aided the unfolding of the secrets of anatomy, and Leonardo revealed that art was the key in expressive detailed explanation. PMID:23248927

Stephens-Borg, Keith

2012-08-01

41

Leonardo da Vinci and Stroke – Vegetarian Diet as a Possible Cause  

Microsoft Academic Search

Leonardo da Vinci (April 15, 1452 to May 2, 1519) was an Italian Renaissance architect, musician, anatomist, inventor, engineer, sculptor, geometer, and painter. It has been gleaned from the many available historical documents that da Vinci was a vegetarian who respected and loved animals, and that he suffered from right hemiparesis in the last 5 years of his life. A

Marta Altieri; Pina Troisi

2010-01-01

42

A Creative Approach to the Common Core Standards: The Da Vinci Curriculum  

ERIC Educational Resources Information Center

"A Creative Approach to the Common Core Standards: The Da Vinci Curriculum" challenges educators to design programs that boldly embrace the Common Core State Standards by imaginatively drawing from the genius of great men and women such as Leonardo da Vinci. A central figure in the High Renaissance, Leonardo made extraordinary contributions as a…

Chaucer, Harry

2012-01-01

43

Transcontinental Telesurgical Nephrectomy Using the da Vinci Robot in a Porcine Model  

Microsoft Academic Search

ObjectivesRobotic telesurgery has been demonstrated over long distances and offers theoretical benefits to urologic training and the care of patients in remote regions. The multiple arms and three-dimensional vision of the da Vinci robotic system provide a platform conducive to long-distance telementoring and telesurgery. Whereas prior telesurgical efforts have used dedicated lines for information transmission, the public Internet offers a

Joseph R. Sterbis; Eric J. Hanly; Barry C. Herman; Michael R. Marohn; Timothy J. Broderick; Samuel P. Shih; Brett Harnett; Charles Doarn; Noah S. Schenkman

2008-01-01

44

Robot-assisted laparoendoscopic single-site pyeloplasty: technique using the da Vinci Si robotic platform.  

PubMed

Conventional laparoscopic dismembered pyeloplasty (LP) is an established alternative to open pyeloplasty given equivalent intermediate-term outcomes and decreased morbidity. Laparoendoscopic single-site (LESS) pyeloplasty has the potential to further decrease the morbidity of LP, while yielding superior cosmesis. It is, however, technically very challenging even with the use of an accessory port, largely because of the difficulty of intracorporeal suturing through a single umbilical incision. Application of the da Vinci robotic surgical platform to LESS pyeloplasty (R-LESS) has the potential to overcome these limitations. We describe our technique for R-LESS pyeloplasty using the da Vinci Si robot. We have found that use of the robotic system in conjunction with certain technique modifications helps to reduce the technical difficulty of LESS pyeloplasty and to shorten the physical learning curve associated with the procedure. PMID:22260717

Seideman, Casey A; Tan, Yung K; Faddegon, Stephen; Park, Samuel K; Best, Sara L; Cadeddu, Jeffrey A; Olweny, Ephrem O

2012-04-17

45

[History of robotics: from archytas of tarentum until Da Vinci robot. (Part II)].  

PubMed

Robotic surgery is a reality. In order to to understand how new robots work is interesting to know the history of ancient (see part i) and modern robotics. The desire to design automatic machines imitating humans continued for more than 4000 years. Archytas of Tarentum (at around 400 a.C.), Heron of Alexandria, Hsieh-Fec, Al-Jazari, Bacon, Turriano, Leonardo da Vinci, Vaucanson o von Kempelen were robot inventors. At 1942 Asimov published the three robotics laws. Mechanics, electronics and informatics advances at XXth century developed robots to be able to do very complex self governing works. At 1985 the robot PUMA 560 was employed to introduce a needle inside the brain. Later on, they were designed surgical robots like World First, Robodoc, Gaspar o Acrobot, Zeus, AESOP, Probot o PAKI-RCP. At 2000 the FDA approved the da Vinci Surgical System (Intuitive Surgical Inc, Sunnyvale, CA, USA), a very sophisticated robot to assist surgeons. Currently urological procedures like prostatectomy, cystectomy and nephrectomy are performed with the da Vinci, so urology has become a very suitable speciality to robotic surgery. PMID:17658147

Sánchez-Martín, F M; Jiménez Schlegl, P; Millán Rodríguez, F; Salvador-Bayarri, J; Monllau Font, V; Palou Redorta, J; Villavicencio Mavrich, H

2007-03-01

46

Xanthelasma and lipoma in Leonardo da Vinci's Mona Lisa.  

PubMed

The painting Mona Lisa in the Louvre, Paris, by Leonardo da Vinci (1503-1506), shows skin alterations at the inner end of the left upper eyelid similar to xanthelasma, and a swelling of the dorsum of the right hand suggestive of a subcutaneous lipoma. These findings in a 25-30 year old woman, who died at the age of 37, may be indicative of essential hyperlipidemia, a strong risk factor for ischemic heart disease in middle age. As far as is known, this portrait of Mona Lisa painted in 1506 is the first evidence that xanthelasma and lipoma were prevalent in the sixteenth century, long before the first description by Addison and Gall in 1851. PMID:15326839

Dequeker, Jan; Muls, Erik; Leenders, Kathleen

2004-08-01

47

Leonardo da Vinci and the Art of Sculpture  

NSDL National Science Digital Library

This website from the Getty Museum accompanies the exhibition "Leonardo da Vinci and the Art of Sculpture: Inspiration and Invention", organized by the High Museum of Art, Atlanta, and on display in Los Angeles until June 20th, 2010. The website features a slide show with images of 11 works of art, some by Leonardo and some by other artists, including older artists who influenced Leonardo and his followers. An image of Donatello's Bearded Prophet, 1418-20, is accompanied by audio discussing Donatello's impact on Leonardo, while the last three slides examine the master/pupil relationship between Leonardo and a younger artist, Giovanni Francesco Rustici, 1475-1554. Visitors to the site can also listen to an introduction to the exhibition that lays out its overall intent from co-curator Julian Brooks.

48

Computer-assisted laparoscopic splenectomy with the da Vinci surgical robot.  

PubMed

Laparoscopic splenectomy has become the standard of care for the surgical treatment of idiopathic thrombocytopenic purpura (ITP). The minimally invasive approach to splenic disorders such as ITP clearly results in the same benefits to the patients as have been demonstrated with the laparoscopic cholecystectomy techniques. New technologies in minimally invasive surgery have resulted in the development of robotic devises that assist the surgeon during the procedures. Robotic surgery is in its infancy at this point in time. Herein, we report a splenectomy performed with the assistance of the da Vinci surgical robot. With advancement of technology, robotic systems will play an integral role in future minimally invasive surgery. PMID:12184899

Chapman, William H H; Albrecht, Robert J; Kim, Victor B; Young, James A; Chitwood, W Randolph

2002-06-01

49

Leonardo da Vinci, One Year on...a Different Look at Vocational Training in Europe.  

ERIC Educational Resources Information Center

|Discusses the success of the Leonardo da Vinci program, a European laboratory of innovation in vocational training, a priority focus of investment in human resources and intelligence, and a way to mobilize innovative forces beyond national boundaries. Trends identified by the program focus on new information and communication technologies. (JOW)|

Le Magazine, 1996

1996-01-01

50

Leonardo da vinci, omo sanza lettere: A case of surface dysgraphia?  

Microsoft Academic Search

This paper is intended to analyse Leonardo da Vinci's orthography from a neuropsychological perspective. In his writings many errors are found which are never made by normal subjects as slips of the pen and are specific to a neuropsychological disorder known as surface dysgraphia. Evidence is also given in support of the hypothesis that Leonardo suffered from an analogous disorder

Giuseppe Sartori

1987-01-01

51

From Leonardo to da Vinci: the history of robot-assisted surgery in urology.  

PubMed

What's known on the subject? and What does the study add? Numerous urological procedures can now be performed with robotic assistance. Though not definitely proven to be superior to conventional laparoscopy or traditional open surgery in the setting of a randomised trial, in experienced centres robot-assisted surgery allows for excellent surgical outcomes and is a valuable tool to augment modern surgical practice. Our review highlights the depth of history that underpins the robotic surgical platform we utilise today, whilst also detailing the current place of robot-assisted surgery in urology in 2011. The evolution of robots in general and as platforms to augment surgical practice is an intriguing story that spans cultures, continents and centuries. A timeline from Yan Shi (1023-957 bc), Archytas of Tarentum (400 bc), Aristotle (322 bc), Heron of Alexandria (10-70 ad), Leonardo da Vinci (1495), the Industrial Revolution (1790), 'telepresence' (1950) and to the da Vinci(®) Surgical System (1999), shows the incredible depth of history and development that underpins the modern surgical robot we use to treat our patients. Robot-assisted surgery is now well-established in Urology and although not currently regarded as a 'gold standard' approach for any urological procedure, it is being increasingly used for index operations of the prostate, kidney and bladder. We perceive that robotic evolution will continue infinitely, securing the place of robots in the history of Urological surgery. Herein, we detail the history of robots in general, in surgery and in Urology, highlighting the current place of robot-assisted surgery in radical prostatectomy, partial nephrectomy, pyeloplasty and radical cystectomy. PMID:21951677

Yates, David R; Vaessen, Christophe; Roupret, Morgan

2011-09-27

52

The Handedness of Leonardo da Vinci: A Tale of the Complexities of Lateralisation  

ERIC Educational Resources Information Center

The handedness of Leonardo da Vinci is controversial. Although there is little doubt that many of his well-attributed drawings were drawn with the left hand, the hatch marks of the shading going downwards from left to right, it is not clear that he was a natural left-hander, there being some suggestion that he may have become left-handed as the…

McManus, I. C.; Drury, Helena

2004-01-01

53

Failure of a robotic arm during da Vinci prostatectomy: a case report  

Microsoft Academic Search

We report a rare case of a da Vinci robotic arm failure during a laparoscopic robot-assisted radical prostatectomy. The articulation\\u000a joint of an Endowrist needle driver was broken and positioned at such an angle that made it impossible to remove through the\\u000a trocar. In addition, it was later discovered that a small piece of the instrument was detached and remained

Nikolaos Koliakos; Geert Denaeyer; Pieter Willemsen; Peter Schatteman; Alexander Mottrie

2008-01-01

54

The Handedness of Leonardo da Vinci: A Tale of the Complexities of Lateralisation  

ERIC Educational Resources Information Center

|The handedness of Leonardo da Vinci is controversial. Although there is little doubt that many of his well-attributed drawings were drawn with the left hand, the hatch marks of the shading going downwards from left to right, it is not clear that he was a natural left-hander, there being some suggestion that he may have become left-handed as the…

McManus, I. C.; Drury, Helena

2004-01-01

55

Da Vinci robot assisted Anderson-Hynes dismembered pyeloplasty: technique and 1 year follow-up.  

PubMed

In experienced hands, laparoscopic pyeloplasty is an effective alternative treatment for symptomatic ureteropelvic junction obstruction (UPJO). Although laparoscopic surgery can clearly benefit patients, laparoscopic pyeloplasty using conventional instrumentation is complex. The purpose of this report is to evaluate the feasibility of robot assisted laparoscopic surgery. Eleven pyeloplasties for UPJO were performed via a laparoscopic transperitoneal approach exclusively with the da Vinci Surgical System. The mean procedure time was 197 min (range 110-310 min). All operations were completed laparoscopically with no intraoperative complications and negligible blood loss. All patients recovered rapidly after surgery with excellent functional results at the 1 year follow-up. Our initial experience suggests that robot assisted Anderson-Hynes pyeloplasty is a safe and effective alternative to conventional laparoscopic surgery. In our opinion, robot assisted surgery will allow urologists to perform complex procedures with greater precision, confidence, and better results, as well as enable them to adapt the whole spectrum of laparoscopic procedures to their field. PMID:12942276

Bentas, Wassilios; Wolfram, Marc; Bräutigam, Ronald; Probst, Michael; Beecken, Wolf-Dietrich; Jonas, Dietger; Binder, Jochen

2003-07-09

56

[The Vitruvian Man: an anatomical drawing for proportions by Leonardo Da Vinci].  

PubMed

The aim of the study was to find out and to analyse the text by Vitruvius which inspired the famous drawing by Leonardo da Vinci (circa 1490) kept in the Galleria dell'Accademia, in Venezia, Italy: the man inscribed in one circle and in one square. The book "de Architectura" by Vitruvius Marcus Pollio was printed several times since the Renaissance when both the roman architecture of antiquity and this text became very popular. From a French translation by Claude Perrault in 1864, it became easy to find a French translation with the original text in Latin (Paris, 2003, Les Belles Lettres, French text by Pierre Gros). The drawing by Leonardo da Vinci illustrates with great accuracy and fidelity the quotation of Vitruvius (with the exception of two of the 12 main relationships). The genius of Leonardo da Vinci was to keep only one trunk, head and neck for two pairs of limbs: scapular and pelvic; to make the circle tangent to the lower edge of the square; to adjust a few features of the quotation for the equilibrium of the whole figure; and of course to bring his incredible skill as a drawer (one of the best of his century). The drawing was made on a sheet of paper 344x245mm, in black ink which became dark brown with time; several lines complete the figure above and below; a short caption and a horizontal scale appear just under the drawing. The celebrity of the drawing, a symbol of the Renaissance, of the equilibrium of man and mankind, of the universality of the artists and intellectuals of the time (Humanism) made it iconic and it has been constantly reproduced and adapted especially for advertisement and logos, not only in the medical field. PMID:18951824

Le Floch-Prigent, P

2008-10-31

57

Incidence and imaging appearance of urethrovesical anastomotic urinary leaks following da Vinci robotic prostatectomy  

Microsoft Academic Search

Background  The advent of the da Vinci robotic prostatectomy has several advantages over open and laparoscopic prostatectomy, including\\u000a fewer complications, better continence and potency. We evaluate the incidence and imaging features of urinary leaks after\\u000a robotic prostatectomy.\\u000a \\u000a \\u000a \\u000a Methods  A retrospective study examining the anastomotic leak rates from 490 consecutive robotic prostatectomy patients. Routine postoperative\\u000a cystography on day 7 was reviewed for presence and

Todd R. Williams; Oscar J. Longoria; Scott Asselmeier; Mani Menon

2008-01-01

58

Realization and optimization of AES algorithm on the TMS320DM6446 based on DaVinci technology  

NASA Astrophysics Data System (ADS)

The application of AES algorithm in the digital cinema system avoids video data to be illegal theft or malicious tampering, and solves its security problems. At the same time, in order to meet the requirements of the real-time, scene and transparent encryption of high-speed data streams of audio and video in the information security field, through the in-depth analysis of AES algorithm principle, based on the hardware platform of TMS320DM6446, with the software framework structure of DaVinci, this paper proposes the specific realization methods of AES algorithm in digital video system and its optimization solutions. The test results show digital movies encrypted by AES128 can not play normally, which ensures the security of digital movies. Through the comparison of the performance of AES128 algorithm before optimization and after, the correctness and validity of improved algorithm is verified.

Jia, Wen-bin; Xiao, Fu-hai

2013-03-01

59

Virtual Mobility in Reality: A Study of the Use of ICT in Finnish Leonardo da Vinci Mobility Projects.  

ERIC Educational Resources Information Center

An e-mail survey and interviews collected data on use of information and communications technology (ICT) in Finnish Leonardo da Vinci mobility projects from 2000-02. Findings showed that the most common ICT tools used were e-mail, digital tools, and the World Wide Web; ICT was used during all project phases; the most common problems concerned…

Valjus, Sonja

60

da Vinci robotic partial nephrectomy for renal cell carcinoma: an atlas of the four-arm technique  

Microsoft Academic Search

da Vinci robotic surgery is becoming a standard alternative to open and laparoscopic surgical techniques. Robotic partial\\u000a nephrectomy has been described in limited numbers. In this article, a surgical atlas of the transperitoneal four-arm approach\\u000a to robotic partial nephrectomy is outlined. Surgical pearls, pitfalls, and limitations are reviewed.

Sam B. Bhayani

2008-01-01

61

Science in the Art of the Italian Renaissance II: Leonardo Da Vinci's Representation of Animals in His Works1  

Microsoft Academic Search

Leonardo Da Vinci combined science and art in a number of his works and studies. This combina- tion of science and art is very evident in the depiction of animals in his works. Leonardo studied both the anatomy and physiology of animals in order to render them with scientific precision. This included dissections of numerous animals and studies on their

DOUGLAS D. KANE

2002-01-01

62

Educating in the Design and Construction of Built Environments Accessible to Disabled People: The Leonardo da Vinci AWARD Project  

ERIC Educational Resources Information Center

|An interdisciplinary partnership within an European Leonardo da Vinci project has developed a new approach aimed at educating secondary school students in the creation of built environments accessible to disabled people and at sensitizing them towards the inclusion of people with disabilities in all realms of social life. The AWARD (Accessible…

Frattari, Antonio; Dalpra, Michela; Bernardi, Fabio

2013-01-01

63

Bell's palsy: the answer to the riddle of Leonardo da Vinci's 'Mona Lisa'.  

PubMed

The smile of the famed portrait 'The Mona Lisa' has perplexed both art historians and researchers for the past 500 years. There has been a multitude of theories expounded to explain the nature of the model's enigmatic smile. The origin of the model's wry smile can be demonstrated through a careful analysis of both documented facts concerning the portrait--some gathered only recently through the use of modern technology--and a knowledge of the clinical presentation of Bell's palsy. Bell's palsy is more prevalent in women who are either pregnant or who have recently given birth. This paper postulates that the smile of the portrait's model was due to Leonardo da Vinci's anatomically precise representation of a new mother affected by Bell's palsy subsequent to her recent pregnancy. PMID:20929717

Maloney, W J

2010-10-07

64

Educating in the design and construction of built environments accessible to disabled people: the Leonardo da Vinci AWARD project  

Microsoft Academic Search

An interdisciplinary partnership within an European Leonardo da Vinci project has developed a new approach aimed at educating\\u000a secondary school students in the creation of built environments accessible to disabled people and at sensitizing them towards\\u000a the inclusion of people with disabilities in all realms of social life. The AWARD (Accessible World for All Respecting Differences)\\u000a project is based on

Antonio Frattari; Michela Dalprà; Fabio Bernardi

65

Leonardo da Vinci, Andreas Vesalius, Carlo Ruini, Jean Héroard und die Anatomie des Pferdes im 16. Jahrhundert  

Microsoft Academic Search

1.Die Anatomia del cavallo (1598) ist nicht in Anlehnung an Leonardo da Vinci, sondern2.an Vesals Fabrica entstanden,3.ebenso Héroards Hippostologie (1599). Diese stellt den dem Autor verbliebenen Rest seiner die ganze Anatomie des Pferdes samt anschließender Krankheitslehre umfassenden Arbeit dar,4.deren übrige Teile vermutlich von Carlo Ruini und dessen Neffen Orazio Francini umgestaltet und im Jahre 1598 zu Bologna in Druck gegeben

Richard Schmutzer

1943-01-01

66

[The history of prostate cancer from the beginning to DaVinci].  

PubMed

For hardly any other organ can the development of medicine and technical advances in the last 150 years be so clearly illustrated as for the prostate. The history of radical prostatectomy was initially characterised by the problems in approaching this relatively difficulty accessible organ. In 1867, Theodor Billroth in Vienna performed the first partial prostatectomy via a perineal access. In 1904, Hugh Hampton Young and William Stewart Halsted at the Johns Hopkins Hospital in Baltimore / USA carried out the first successful extracapsular perineal prostatectomy and opened up a new era. In Germany, Prof. Friedrich Voelcker in Halle in 1924 developed the so-called ischiorectal prostatectomy. But it was left to Terence Millin to publish in 1945 the first series of retropubic prostatectomies. In 1952, the sacroperineal approach according to Thiermann and the sacral prostatectomy according to were introduced. Finally, in 1991 another new era in prostate surgery started with the first laparoscopic prostatectomy. This development peaked in 2011 with the presentation of the laparoscopic DaVinci prostatectomy by Binder. Originally a stepchild of urological surgery that was to be avoided whenever possible due to the fear of serious complications, the prostate has progressed in the course of time to an obscure object of lust. The stepchild has become the favorite child. PMID:23035261

Hatzinger, M; Hubmann, R; Moll, F; Sohn, M

2012-07-01

67

Leonardo da Vinci's "A skull sectioned": skull and dental formula revisited.  

PubMed

What can be learned from historical anatomical drawings and how to incorporate these drawings into anatomical teaching? The drawing "A skull sectioned" (RL 19058v) by Leonardo da Vinci (1452-1519), hides more detailed information than reported earlier. A well-chosen section cut explores sectioned paranasal sinuses and ductus nasolacrimalis. A dissected lateral wall of the maxilla is also present. Furthermore, at the level of the foramen mentale, the drawing displays compact and spongious bony components, together with a cross-section through the foramen mentale and its connection with the canalis mandibulae. Leonardo was the first to describe a correct dental formula (6424) and made efforts to place this formula above the related dental elements. However, taking into account, the morphological features of the individual elements of the maxilla, it can be suggested that Leonardo sketched a "peculiar dental element" on the position of the right maxillary premolar in the dental sketch. The fact that the author did not make any comment on that special element is remarkable. Leonardo could have had sufficient knowledge of the precise morphology of maxillary and mandibular premolars, since the author depicted these elements in the dissected skull. The fact that the author also had access to premolars in situ corroborates our suggestion that "something went wrong" in this part of the drawing. The present study shows that historical anatomical drawings are very useful for interactive learning of detailed anatomy for students in medicine and dentistry. PMID:22431331

Gerrits, Peter O; Veening, Jan G

2012-03-19

68

The handedness of Leonardo da Vinci: a tale of the complexities of lateralisation.  

PubMed

The handedness of Leonardo da Vinci is controversial. Although there is little doubt that many of his well-attributed drawings were drawn with the left hand, the hatch marks of the shading going downwards from left to right, it is not clear that he was a natural left-hander, there being some suggestion that he may have become left-handed as the result of an injury to his right hand in early adulthood. Leonardo's lateralisation may be illuminated by an obscure passage in his notebooks in which he describes crouching down to look into a dark cave, putting his left hand on his knee, and shading his eyes with his right hand. We carried out a questionnaire survey, using 33 written and photographic items, to find whether this behaviour was typical of right handers or left handers. In fact the 'Leonardo task' showed almost no direct association with handedness, meaning that it contributes little to the immediate problem of elucidating Leonardo's handedness. However, the lateralisation of the task did relate to other aspects of behavioural laterality in surprisingly complex ways. This suggests that individual differences in handedness, and behavioural laterality in general, have a structural complexity which is not fully encompassed by simple measures of direction or degree of handedness. PMID:15177791

McManus, I C; Drury, Helena

2004-07-01

69

Chopstick surgery: a novel technique enables use of the Da Vinci Robot to perform single-incision laparoscopic surgery  

Microsoft Academic Search

\\u000a Introduction  Single-incision laparoscopic surgery (SILS) is limited by the coaxial arrangement of the instruments. A surgical robot with\\u000a “wristed” instruments could overcome this limitation but the “arms” collide when working coaxially. This video demonstrates\\u000a a new technique of “chopstick surgery,” which enables use of the robotic arms through a single incision without collision.\\u000a \\u000a \\u000a \\u000a \\u000a Methods  Experiments were conducted utilizing the da Vinci

R. A. JosephN; N. A. Salas; C. Johnson; A. Goh; S. P. Cuevas; M. A. Donovan; M. G. Kaufman; B. Miles; P. R. Reardon; B. L. Bass; B. J. Dunkin

2010-01-01

70

Media Images Abbott and Costello Meet the End of the World: Who Is the Enemy in "The Da Vinci Code" and "An Inconvenient Truth?"  

ERIC Educational Resources Information Center

Popular culture requires readily identifiable villains. Subcultural groups often serve this role, creating controversies. Controversies based on religion are especially bitter. As a rule, religion in the movies is inoffensively sentimental, but "The Da Vinci Code" is both popular and provocative, treading on the dangerous ground of Jesus's…

Beck, Bernard

2007-01-01

71

Media Images Abbott and Costello Meet the End of the World: Who Is the Enemy in "The Da Vinci Code" and "An Inconvenient Truth?"  

ERIC Educational Resources Information Center

|Popular culture requires readily identifiable villains. Subcultural groups often serve this role, creating controversies. Controversies based on religion are especially bitter. As a rule, religion in the movies is inoffensively sentimental, but "The Da Vinci Code" is both popular and provocative, treading on the dangerous ground of Jesus's…

Beck, Bernard

2007-01-01

72

Console-integrated stereoscopic OsiriX 3D volume-rendered images for da Vinci colorectal robotic surgery.  

PubMed

The increased distance between surgeon and surgical field is a significant problem in laparoscopic surgery. Robotic surgery, although providing advantages for the operator, increases this gap by completely removing force feedback. Enhancement with visual tools can therefore be beneficial. The goal of this preliminary work was to create a custom plugin for OsiriX to display volume-rendered images in the da Vinci surgeon's console. The TilePro multi-input display made the generated stereoscopic pairs appear to have depth. Tumor position, vascular supply, spatial location, and relationship between organs appear directly within the surgeon's field of view. This study presents a case of totally robotic right colectomy for cancer using this new technology. Sight diversion was no longer necessary. Depth perception was subjectively perceived as profitable. Total immersion in the operative field helped compensate for the lack of tactile feedback specific to robotic intervention. This innovative tool is a step forward toward augmented-reality robot-assisted surgery. PMID:22549904

Volonté, Francesco; Pugin, Francois; Buchs, Nicolas Christian; Spaltenstein, Joël; Hagen, Monika; Ratib, Osman; Morel, Philippe

2012-05-01

73

The mother relationship and artistic inhibition in the lives of Leonardo da Vinci and Erik H. Erikson.  

PubMed

In four earlier articles, I focused on the theme of the relationship of melancholia and the mother, and suggested that the melancholic self may experience humor (Capps, 2007a), play (Capps, 2007b), dreams (Capps, 2008a), and art (Capps, 2008b) as restorative resources. I argued that Erik H. Erikson found these resources to be valuable remedies for his own melancholic condition, which had its origins in the fact that he was illegitimate and was raised solely by his mother until he was three years old, when she remarried. In this article, I focus on two themes in Freud's Leonardo da Vinci and a memory of his childhood (1964): Leonardo's relationship with his mother in early childhood and his inhibitions as an artist. I relate these two themes to Erikson's own early childhood and his failure to achieve his goal as an aspiring artist in his early twenties. The article concludes with a discussion of Erikson's frustrated aspirations to become an artist and his emphasis, in his psychoanalytic work, on children's play. PMID:19093682

Capps, Donald

2008-12-01

74

Peri-operative comparison between daVinci-assisted radical prostatectomy and open radical prostatectomy in obese patients  

NASA Astrophysics Data System (ADS)

Introduction: While the effects of increasing body mass index on prostate cancer epidemiology and surgical approach have recently been studied, its effects on surgical outcomes are less clear. We studied the perioperative outcomes of obese (BMI >= 30) men treated with daVinci-assisted laparoscopic radical prostatectomy (DLP) and compared them to those treated with open radical retropubic prostatectomy (RRP) in a contemporary time frame. Method: After Institutional Review Board approval, we used the Mayo Clinic Radical Prostatectomy database to identify patients who had undergone DLP by a single surgeon and those who had undergone open RRP by a single surgeon between December 2002 and March 2005. Baseline demographics, peri- and post-operative courses, and complications were collected by retrospective chart review, and variables from the two cohorts compared using chi-square method and least-squares method of linear regression where appropriate. Results: 59 patients who had DLP and 76 undergoing RRP were available for study. Baseline demographics were not statistically different between the two cohorts. Although DLP had a significantly lower clinical stage than RRP (p=0.02), pathological stage was not statistically different (p=0.10). Transfusion rates, hospital stay, overall complications, and pathological Gleason were also not significantly different, nor were PSA progression, positive margin rate, or continence at 1 year. After bilateral nerve-sparing, erections suitable for intercourse with or without therapy at 1 year was 88.5% (23/26) for DLP and 61.2% (30/49) for RRP (p=0.01). Follow-up time was similar. Conclusion: For obese patients, DLP appears to have similar perioperative, as well as short-term oncologic and functional outcomes when compared to open RRP.

Le, Carter Q.; Ho, Khai-Linh V.; Slezak, Jeffrey M.; Blute, Michael L.; Gettman, Matthew T.

2007-03-01

75

Da Vinci robot assisted Anderson-Hynes dismembered pyeloplasty: technique and 1 year follow-up  

Microsoft Academic Search

In experienced hands, laparoscopic pyeloplasty is an effective alternative treatment for symptomatic ureteropelvic junction obstruction (UPJO). Although laparoscopic surgery can clearly benefit patients, laparoscopic pyeloplasty using conventional instrumentation is complex. The purpose of this report is to evaluate the feasibility of robot assisted laparoscopic surgery. Eleven pyeloplasties for UPJO were performed via a laparoscopic transperitoneal approach exclusively with the da

Wassilios Bentas; Marc Wolfram; Ronald Bräutigam; Michael Probst; Wolf-Dietrich Beecken; Dietger Jonas; Jochen Binder

2003-01-01

76

The left ventricle as a mechanical engine: from Leonardo da Vinci to the echocardiographic assessment of peak power output-to-left ventricular mass.  

PubMed

The interpretation of the heart as a mechanical engine dates back to the teachings of Leonardo da Vinci, who was the first to apply the laws of mechanics to the function of the heart. Similar to any mechanical engine, whose performance is proportional to the power generated with respect to weight, the left ventricle can be viewed as a power generator whose performance can be related to left ventricular mass. Stress echocardiography may provide valuable information on the relationship between cardiac performance and recruited left ventricular mass that may be used in distinguishing between adaptive and maladaptive left ventricular remodeling. Peak power output-to-mass, obtained during exercise or pharmacological stress echocardiography, is a measure that reflects the number of watts that are developed by 100 g of left ventricular mass under maximal stimulation. Power output-to-mass may be calculated as left ventricular power output per 100 g of left ventricular mass: 100× left ventricular power output divided by left ventricular mass (W/100 g). A simplified formula to calculate power output-to-mass is as follows: 0.222 × cardiac output (l/min) × mean blood pressure (mmHg)/left ventricular mass (g). When the integrity of myocardial structure is compromised, a mismatch becomes apparent between maximal cardiac power output and left ventricular mass; when this occurs, a reduction of the peak power output-to-mass index is observed. PMID:21934524

Dini, Frank L; Guarini, Giacinta; Ballo, Piercarlo; Carluccio, Erberto; Maiello, Maria; Capozza, Paola; Innelli, Pasquale; Rosa, Gian M; Palmiero, Pasquale; Galderisi, Maurizio; Razzolini, Renato; Nodari, Savina

2013-03-01

77

VLTI\\/VINCI observations of the nucleus of NGC 1068 using the adaptive optics system MACAO  

Microsoft Academic Search

We present the first near-infrared K-band long-baseline interferometric measurement of the nucleus of the prototype Seyfert 2 Galaxy NGC 1068 with resolution lambda\\/B ˜ 10 mas obtained with the Very Large Telescope Interferometer (VLTI) and the two 8.2 m diameter Unit Telescopes UT 2 and UT 3. The adaptive optics system MACAO (Multi Application Curvature Adaptive Optics) was employed to

M. Wittkowski; P. Kervella; R. Arsenault; F. Paresce; T. Beckert; G. Weigelt

2004-01-01

78

Avoiding Steric' Congestion in Dendrimer Growth through Proportionate Branching: A Twist on da Vinci's Rule of Tree Branching  

PubMed Central

Making defect-free macromolecules is a challenging issue in chemical synthesis. This challenge is especially pronounced in dendrimer synthesis where exponential growth quickly leads to steric congestion. To overcome this difficulty, proportionate branching in dendrimer growth is proposed. In proportionate branching, both the number and the length of branches increase exponentially, but in opposite directions to mimic tree growth. The effectiveness of this strategy is demonstrated through the synthesis of a fluorocarbon dendron containing 243 chemically identical fluorine atoms with a MW of 9,082 Da. Monodispersity is confirmed by nuclear magnetic resonance spectroscopy, mass spectrometry and small-angle X-ray scattering. Growing different parts proportionately, as nature does, could be a general strategy to achieve defect-free synthesis of macromolecules.

Yue, Xuyi; Taraban, Marc B; Hyland, Laura L.

2013-01-01

79

Da Vinci-Assisted Robotic Partial Nephrectomy: Technique and Results at a Mean of 15 Months of Follow-Up  

Microsoft Academic Search

ObjectiveLaparoscopic partial nephrectomy is gaining acceptance as an alternative to open surgery for small renal tumours, although technical difficulty of intracorporeal suturing and concerns over warm ischemia time are limitations. Previous work has demonstrated that suturing with the robotic system is easier compared with laparoscopy. We believe the robot has an application and we report our initial experience in 10

Sanjeev Kaul; Rajesh Laungani; Richard Sarle; Hans Stricker; James Peabody; Ray Littleton; Mani Menon

2007-01-01

80

Spectral imaging of Leonardo Da Vinci's Mona Lisa: An authentic smile at 1523 dpi with additional infrared data  

Microsoft Academic Search

Two photos of the famous Mona Lisa were taken in October 2004 to contribute towards improving the technical and scientific data of the masterpiece before moving it in April 2005. The capabilities of the multispectral system developed by the LUMIERE TECHNOLOGY Company within the scope of the European CRISATEL project have made it possible to achieve optimal spatial resolution on

P. Cotte; D. Dupraz

81

Non-contact intrawall penetrating radar for heritage survey: the search of the ‘Battle of Anghiari’ by Leonardo da Vinci  

Microsoft Academic Search

In this paper a high-frequency large-bandwidth synthetic aperture penetrating radar intended for the inspection of masonry walls, and its application to intrawall investigation of an important Heritage structure in Florence, Italy, are described. The radar system has been conceived and designed for non-contact operation, in particular for allowing walls covered by paintings to be inspected avoiding damages to the surface

M. Pieraccini; D. Mecatti; G. Luzia; M. Seracini; G. Pinelli; C. Atzeni

2005-01-01

82

Implementing integrated management systems using a risk analysis based approach  

Microsoft Academic Search

The survey made within companies in the frame of the Leonardo da Vinci project “Technological Training for SME’s” (Leonardo da Vinci project CZ\\/98\\/1\\/82530\\/PI\\/III.1.a\\/FPI “Technological Training for SME’s” (1998–2001)[1]), English version. Ostrava: b.n., 2001 (coordinator A. Labodova)) documented the need for effective ways of integrating currently separate management systems for quality management, environmental management and health and safety. According to the

Alena Labodová

2004-01-01

83

Tourism. Leonardo da Vinci Series: Good Practices.  

ERIC Educational Resources Information Center

|This brochure, part of a series about good practices in vocational training in the European Union, describes 10 projects that have promoted investment in human resources through training in the tourism sector to promote sustainable, or responsible, tourism. The projects and their countries of origin are as follows: (1) BEEFT, training of mobility…

Commission of the European Communities, Brussels (Belgium). Directorate-General for Education and Culture.

84

Tourism. Leonardo da Vinci Series: Good Practices.  

ERIC Educational Resources Information Center

This brochure, part of a series about good practices in vocational training in the European Union, describes 10 projects that have promoted investment in human resources through training in the tourism sector to promote sustainable, or responsible, tourism. The projects and their countries of origin are as follows: (1) BEEFT, training of mobility…

Commission of the European Communities, Brussels (Belgium). Directorate-General for Education and Culture.

85

MONA, LISA and VINCI Soon Ready to Travel to Paranal  

NASA Astrophysics Data System (ADS)

First Instruments for the VLT Interferometer Summary A few months from now, light from celestial objects will be directed for the first time towards ESO's Very Large Telescope Interferometer (VLTI) at the Paranal Observatory (Chile). During this "First Light" event and the subsequent test phase, the light will be recorded with a special test instrument, VINCI (VLT INterferometer Commissioning Instrument). The main components of this high-tech instrument are aptly named MONA (a system that combines the light beams from several telescopes by means of optical fibers) and LISA (the infrared camera). VINCI was designed and constructed within a fruitful collaboration between ESO and several research institutes and industrial companies in France and Germany . It is now being assembled at the ESO Headquarters in Garching (Germany) and will soon be ready for installation at the telescope on Paranal. With the VLTI and VINCI, Europe's astronomers are now entering the first, crucial phase of an exciting scientific and technology venture that will ultimately put the world's most powerful optical/IR interferometric facility in their hands . PR Photo 31/00 : VINCI during tests at the ESO Headquarters in Garching. The VLT Interferometer (VLTI) ESO Press Photo 31/00 ESO Press Photo 31/00 [Preview; JPEG: 400 x 301; 43k] [Normal; JPEG: 800 x 602;208xk] [Full-Res; JPEG: 1923 x 1448; 2.2Mb] PR Photo 31/00 shows the various components of the complex VINCI instrument for the VLT Interferometer , during the current tests at the Optical Laboratory at the ESO Headquarters in Garching (Germany). It will later be installed in "clean-room" conditions within the Interferometric Laboratory at the Paranal Observatory. This electronic photo was obtained for documentary purposes. VINCI (VLT INterferometer Commissioning Instrument) is the "First Light" instrument for the Very Large Telescope Interferometer (VLTI) at the Paranal Observatory (Chile). Early in 2001, it will be used for the first tests of this very complex system. Subsequently, it will serve to tune this key research facility to the highest possible performance. The VLTI is based on the combination of light (beams) from the telescopes at Paranal. Of these, the four 8.2-m Unit Telescopes are already in operation - they will soon be joined by three 1.8-m telescopes that can be relocated on rails, cf. PR Photo 43b/99. By means of a system of mirrors, the light from two or more of these telescopes will be guided to the central Interferometric Laboratory , at the center of the observing platform on Paranal. Information about the heart of this complex system, the Delay Lines that are located in the underground Interferometric Tunnel, is available with the recent ESO PR Photos 26a-e/00. The VLTI will later receive other front-line instruments, e.g. AMBER , MIDI and PRIMA. When fully ready some years from now, the VLTI will produce extremely sharp images. This will have a major impact on different types of exciting astronomical observations, e.g.: * the direct discovery and imaging of extra-solar planets comparable to Jupiter, * the discovery and imaging of low-mass stars such as brown dwarfs, * observations of star-forming regions and to better understand the physical processes that give birth to stars, * spectral analysis of the atmospheres of nearby stars, and * imaging the objects of the very core of our Galaxy and the detection of black holes in active nuclei of galaxies. The VINCI test instrument The new instrument, VINCI , will soon be delivered to Paranal by the Département de Recherche Spatiale (Department for Space Research), a joint unit of the Centre Nationale de la Recherche Scientifique (French National Centre for Scientific Research) and the Paris Observatory. VINCI is a functional copy of the FLUOR instrument - now at the IOTA (Infrared Optical Telescope Array) interferometer - that has been upgraded and adapted to the needs of the VLTI. FLUOR was developed by the Département de Recherche Spatiale (DESPA) of the Paris Observatory. It was used in 1991 at

2000-11-01

86

Three-dimensional trim coil field in the VINCY cyclotron.  

National Technical Information Service (NTIS)

The trim coil magnetic field in the VINCY cyclotron was performed with the help of the three-dimensional (3D) software. The comparison of the 2D and 3D trim coil calculation results are presented. The 3d calculations of trim coil show some difference in t...

S. B. Vorozhtsov I. V. Titkova O. V. Lomakina D. V. Altiparmakov M. Lazovic

1996-01-01

87

Totally endoscopic Nissen fundoplication with a robotic system in a child  

Microsoft Academic Search

The Da Vinci robot device represents the latest advance in laparoendoscopic surgery. We report the case of an endoscopic Nissen fundoplication performed with the aid of a telemanipulation robot system in a 10-year-old girl. To our knowledge, this is the first such case to be reported. In addition to standard monitoring, we used invasive blood pressure monitoring during the 282-min

D. Meininger; C. Byhahn; K. Heller; C. N. Gutt; K. Westphal

2001-01-01

88

Da Vinci Robot-Assisted Transoral Odontoidectomy for Basilar Invagination  

Microsoft Academic Search

The transoral approach is an effective way to decompress the craniocervical junction due to basilar invagination. This approach has been described and refined, but significant limitations and technical challenges remain. Specifically, should the transoral route be used for intradural pathology, such as a meningioma, or should an inadvertent durotomy occur during extradural dissection, achieving a watertight closure of the dura

John Y. K. Lee; Bradley Lega; Deb Bhowmick; Jason G. Newman; Greg S. Weinstein; M. Sean Grady; William C. Welch

2010-01-01

89

Robot-Assisted (Da Vinci) Urologic Surgery: An Emerging Frontier  

Microsoft Academic Search

Robotic urologic surgery is an interesting and new development in the field of urology that has tremendous possibilities for progress in the future. Reports from various centers worldwide of complex urologic procedures in humans performed with robotic assistance have documented their safety, efficacy, efficiency, and feasibility. This review attempts to define the incorporation of robotics into laparoscopic urologic surgery and

Ashok K. Hemal; Mani Menon

90

Distance Learning. Leonardo da Vinci Series: Good Practices.  

ERIC Educational Resources Information Center

|This brochure, part of a series about good practices in vocational training in the European Union, describes 12 projects that use distance learning to promote lifelong learning in adults. The projects and their countries of origin are as follows: (1) 3D Project, training in the use of IT tools for 3D simulation and animation and practical…

Commission of the European Communities, Brussels (Belgium). Directorate-General for Education and Culture.

91

Technique of da vinci robot-assisted anatomic radical prostatectomy  

Microsoft Academic Search

ObjectivesRobotic radical prostatectomy is a new procedure for treating prostate cancer. Many centers are attempting this new modality but a detailed description of the technique has not yet been published. We report the technique as performed at the Vattikuti Urology Institute.

Ashutosh Tewari; James Peabody; Richard Sarle; Guruswami Balakrishnan; Ashok Hemal; Alok Shrivastava; Mani Menon

2002-01-01

92

Leonardo da Vinci's (1452-1519) urologisch-anatomische Zeichnungen  

Microsoft Academic Search

Zum Thema Der wesentliche Wandel in der zeichnerischen Wiedergabe urologisch-anatomischer Strukturen wird erstmals im Zeitalter der Renaissance sichtbar. In dieser Periode wurde durch das Zusammenwirken von Künstlern und Ärzten insbesondere bei letzteren der Wunsch rege, auch die inneren Organe des Menschen realistisch abzubilden. Dies war ohne künstlerische Unterstützung nicht möglich, es sei denn, der Anatom war außerdem zeichnerisch außerordentlich begabt.

H. Dietrich

1997-01-01

93

Distance Learning. Leonardo da Vinci Series: Good Practices.  

ERIC Educational Resources Information Center

This brochure, part of a series about good practices in vocational training in the European Union, describes 12 projects that use distance learning to promote lifelong learning in adults. The projects and their countries of origin are as follows: (1) 3D Project, training in the use of IT tools for 3D simulation and animation and practical…

Commission of the European Communities, Brussels (Belgium). Directorate-General for Education and Culture.

94

EoL: A Web-Based Distance Assessment System  

Microsoft Academic Search

\\u000a An implementation of a Web-based distance assessment system, called EoL, developed and used at our University is presented. EoL is based on the outcome of the DASP project, devoted to the evaluation of the competencies acquired by stagers during in-company\\u000a placements in the Leonardo da Vinci program of the European Commission for lifelong learning. We discuss here the architecture of

Osvaldo Gervasi; Antonio Laganà

2004-01-01

95

Early experiences of endoscopic procedures in general surgery assisted by a computer-enhanced surgical system  

Microsoft Academic Search

  We performed a variety of complete total endoscopic general surgical procedures, including colon resection, distal gastrectomy,\\u000a and splenectomy, successfully with the assistance of the da Vinci computer-enhanced surgical system. The robotic system allowed\\u000a us to manipulate the endoscopic instruments as effectively as during open surgery. It enhanced visualization of both the operative\\u000a field and precision of the necessary techniques, as

M. Hashizume; M. Shimada; M. Tomikawa; Y. Ikeda; I. Takahashi; R. Abe; F. Koga; N. Gotoh; K. Konishi; S. Maehara; K. Sugimachi

2002-01-01

96

A Versatile System for Computer Integrated Mini-invasive Robotic Surgery  

Microsoft Academic Search

This paper presents a versatile system that aims at enhancing minimally invasive robotic surgery through patient dependent\\u000a optimized planning, realistic simulation and safe supervision. The underlying architecture of the proposed approach is presented,\\u000a then each component is detailed and illustrated with experimental examples. In particular, an instantiation with the Da Vinci™\\u000a [1] robot for performing cardiac surgery is used as

Louaï Adhami; Ève Coste-manière

2002-01-01

97

Robotic dexterity: evaluation of three-dimensional monitoring system and non-dominant hand maneuverability in robotic surgery  

Microsoft Academic Search

There has been great progress in robotic surgical technology in recent years. The aim of this study was to objectively quantify\\u000a robot-enhanced dexterity. To evaluate three-dimensional monitoring and non-dominant hand maneuverability using the da Vinci\\u000a Surgical System, five surgeons were asked to thread the needle through all 11 holes on the model with handling robotic instrument.\\u000a Three types of suturing

Norihiko Ishikawa; Go Watanabe; Yasumitsu Hirano; Noriyuki Inaki; Kenji Kawachi; Makoto Oda

2007-01-01

98

The K-band intensity profile of R Leonis probed by VLTI/VINCI  

NASA Astrophysics Data System (ADS)

We present near-infrared K-band interferometric measurements of the Mira star R Leonis obtained in April 2001 and January 2002 with the VLTI, the commissioning instrument VINCI, and the two test siderostats. These epochs correspond to near-maximum stellar variability phases ~0.08 and ~1.02 (one cycle later), respectively. The April 2001 data cover a range of spatial frequencies (31 35 cycles/arcsecond) within the first lobe of the visibility function. These measurements indicate a center-to-limb intensity variation (CLV) that is clearly different from a uniform disk (UD) intensity profile. We show that these measured visibility values are consistent with predictions from recent self-excited dynamic Mira model atmospheres that include molecular shells close to continuum-forming layers. We derive high-precision Rosseland diameters of 28.5 ± 0.4 mas and 26.2 ± 0.8 mas for the April 2001 and January 2002 data, respectively. Together with literature estimates of the distance and the bolometric flux, these values correspond to linear radii of 350+50-40 R_? and 320+50-40 R_?, and to effective temperatures of 2930 ± 270 K and 3080 ± 310 K, respectively. Based on public commissioning data released from the ESO VLTI (www.eso.org/projects/vlti/instru/vinci/ vinci_data_sets.html)

Fedele, D.; Wittkowski, M.; Paresce, F.; Scholz, M.; Wood, P. R.; Ciroi, S.

2005-03-01

99

Building Skills and Qualifications among SME Employees. Leonardo da Vinci Good Practices Series.  

ERIC Educational Resources Information Center

|This document profiles 10 European programs that exemplify good practice in building skills and qualifications among employees of small and medium enterprises (SMEs). The programs profiled are as follows: (1) TRICTSME (a program providing World Wide Web-based information and communication technologies training for SMEs in manufacturing); (2)…

Commission of the European Communities, Brussels (Belgium). Directorate-General for Education and Culture.

100

Da vinci coding? Using renaissance artists' depictions of the brain to engage student interest in neuroanatomy.  

PubMed

This report describes a pair of brief, interactive classroom exercises utilizing Renaissance artists' depictions of the brain to help increase student interest in learning basic neuroanatomy. Undergraduate students provided anonymous quantitative evaluations of both exercises. The feedback data suggest that students found both exercises engaging. The data also suggest that the first exercise increased student interest in learning more about neuroanatomy in general, while the second provided useful practice in identifying major neuroanatomical structures. Overall, the data suggest that these exercises may be a useful addition to courses that introduce or review neuroanatomical concepts. PMID:23805058

Watson, Todd D

2013-06-15

101

Novel dynamic information integration during da Vinci robotic partial nephrectomy and radical nephrectomy  

Microsoft Academic Search

With the increasing discovery of small renal neoplasms, minimally invasive excisional approaches have become more popular.\\u000a Robotic partial nephrectomy is an emerging procedure. During robotic renal surgery, the console surgeon often has a need to\\u000a view images or other data during the surgical dissection. Herein, we describe the preliminary use of integrative surgical\\u000a imaging in the console surgical view during

Sam B. Bhayani; Devon C. Snow

2008-01-01

102

Social and Occupational Integration of Disadvantaged People. Leonardo da Vinci Good Practices Series.  

ERIC Educational Resources Information Center

|This document profiles nine European programs that exemplify good practice in social and occupational integration of disadvantaged people. The programs profiled are as follows: (1) Restaurant Venezia (a CD-ROM program to improve the reading and writing skills of young people in Luxembourg who have learning difficulties); (2) an integrated…

Commission of the European Communities, Brussels (Belgium). Directorate-General for Education and Culture.

103

Mary Magdalene and the Politics of Public Memory: Interrogating The Da Vinci Code  

Microsoft Academic Search

As a figure of appropriation, recovery, and reinterpretation, Mary Magdalene illuminates the need to examine how rhetorical practices inscribe and misrepresent historical women in public memory. Analyzing sites of public memory, such as mass media, helps feminist scholars account for not only women who have been forgotten, but also for the ways that women have been misremembered. Using Dan Brown's

Tammie M. Kennedy

2012-01-01

104

Moving towards Optimising Demand-Led Learning: The 2005-2007 ECUANET Leonardo Da Vinci Project  

ERIC Educational Resources Information Center

|Purpose: The purpose of this paper is to present the key project learning points and outcomes as a guideline for the future quality management of demand-led learning and development. Design/methodology/approach: The research methodology was based upon a corporate university blueprint architecture and browser toolkit developed by a member of the…

Dealtry, Richard; Howard, Keith

2008-01-01

105

Tests of stellar model atmospheres by optical interferometry. IV. VINCI interferometry and UVES spectroscopy of Menkar  

NASA Astrophysics Data System (ADS)

Aims.We present coordinated near-infrared K-band interferometric and optical spectroscopic observations of the M 1.5 giant ? Cet (Menkar) obtained with the instruments VINCI and UVES at the Paranal Observatory. Spherically symmetric PHOENIX stellar model atmospheres are constrained by comparison to our interferometric and spectroscopic data, and high-precision fundamental parameters of Menkar are obtained. Methods: .Our high-precision VLTI/VINCI observations in the first and second lobes of the visibility function directly probe the model-predicted strength of the limb darkening effect in the K-band and the stellar angular diameter. The high spectral resolution of UVES of R=80 000-110 000 allows us to confront in detail observed and model-predicted profiles of atomic lines and molecular bands. Results: .We show that our derived PHOENIX model atmosphere for Menkar is consistent with both the measured strength of the limb-darkening in the near-infrared K-band and the profiles of spectral bands around selected atomic lines and TiO bandheads from 370 nm to 1000 nm. At the detailed level of our high spectral resolution, however, noticeable discrepancies between observed and synthetic spectra exist. We obtain a high-precision Rosseland angular diameter of ?_Ross=12.20~mas± 0.04~mas. Together with the Hipparcos parallax of 14.82 mas ± 0.83 mas, it corresponds to a Rosseland radius of R_Ross=89 ± 5 R_?, and together with the bolometric flux based on available spectrophotometry, to an effective temperature of T_eff=3795~K ± 70 K. The luminosity based on these values is L=1460~L_? ± 300~L_?. Relying on stellar evolutionary tracks, these values correspond to a mass M= 2.3~M_?~± 0.2~M_? and a surface gravity log g=0.9 ± 0.1 (cgs). Conclusions: .Our approach illustrates the power of combining interferometry and high-resolution spectroscopy to constrain and calibrate stellar model atmospheres. The simultaneous agreement of the model atmosphere with our interferometric and spectroscopic data increases confidence in the reliability of the modelling of this star, while discrepancies at the detailed level of the high resolution spectra can be used to further improve the underlying model.

Wittkowski, M.; Aufdenberg, J. P.; Driebe, T.; Roccatagliata, V.; Szeifert, T.; Wolff, B.

2006-12-01

106

Da Leonardo da Vinci alla nanotribologia: storia delle ricerche e delle teorie sui fenomeni d'attrito  

Microsoft Academic Search

The most important topics and results of research on friction, from antiquity to now, are outlined: the early laws and theories, from Leonardo to Amontons and Coulomb; the theory of lubrication and the models of rolling friction from 1840 to 1930; the theories of wear, the synthesis of Bowden and Tabor and the birth of tribology; the recent developments, friction

Ugo Besson

107

Improving Security in the ATLAS PanDA System  

NASA Astrophysics Data System (ADS)

The security challenges faced by users of the grid are considerably different to those faced in previous environments. The adoption of pilot jobs systems by LHC experiments has mitigated many of the problems associated with the inhomogeneities found on the grid and has greatly improved job reliability; however, pilot jobs systems themselves must then address many security issues, including the execution of multiple users' code under a common 'grid' identity. In this paper we describe the improvements and evolution of the security model in the ATLAS PanDA (Production and Distributed Analysis) system. We describe the security in the PanDA server which is in place to ensure that only authorized members of the VO are allowed to submit work into the system and that jobs are properly audited and monitored. We discuss the security in place between the pilot code itself and the PanDA server, ensuring that only properly authenticated workload is delivered to the pilot for execution. When the code to be executed is from a 'normal' ATLAS user, as opposed to the production system or other privileged actor, then the pilot may use an EGEE developed identity switching tool called gLExec. This changes the grid proxy available to the job and also switches the UNIX user identity to protect the privileges of the pilot code proxy. We describe the problems in using this system and how they are overcome. Finally, we discuss security drills which have been run using PanDA and show how these improved our operational security procedures.

Caballero, J.; Maeno, T.; Nilsson, P.; Stewart, G.; Potekhin, M.; Wenaus, T.

2011-12-01

108

DBS -- An rlogin multiplexer and output logger for DA systems  

SciTech Connect

DART Bootstrap Services (dbs) is the first component of run-control for the DART Data Acquisition system -- the DA for the 96` round of experiments at Fermilab -- though it has potential usefulness as a powerful tool in other distributed applications. dbs is an rlogin session multiplexer. It allows a user, running a single program, to start up any number of remote login sessions, feed shell commands to them, and collect their output into a single (or multiple) log files (a server keeps the sessions open and collects their output). From this program, any session can be attached to interactively so it appears just like an rlogin session -- dbs becomes transparent. When finished with this interactive mode, the user can escape back to dbs and attach to a different session if so desired. Among many other useful features, dbs supplies a mechanism for cleanup (deletion) of all processes created under a session, allowing a fresh start.

Oleynik, G.; Appleton, L.; Udumula, L.; Votava, M.

1994-04-01

109

Fallopian tube carcinoma in a patient with a pelvic kidney: surgical management with the da Vinci robot  

Microsoft Academic Search

A patient with a known pelvic kidney and early fallopian tube carcinoma was managed with robotically assisted surgery. Associated\\u000a conginital anomalies were noted and described. The final stage of the cancer was 1C, grade 3 and she is without evidence of\\u000a recurrent cancer 2 years following completion of chemotherapy.

Mitchel S. Hoffman

110

2D and 3D optical diagnostic techniques applied to Madonna dei Fusi by Leonardo da Vinci  

Microsoft Academic Search

3D measurement and modelling have been traditionally applied to statues, buildings, archeological sites or similar large structures, but rarely to paintings. Recently, however, 3D measurements have been performed successfully also on easel paintings, allowing to detect and document the painting's surface. We used 3D models to integrate the results of various 2D imaging techniques on a common reference frame. These

R. Fontana; M. C. Gambino; M. Greco; L. Marras; M. Materazzi; E. Pampaloni; A. Pelagotti; L. Pezzati; P. Poggi; C. Sanapo

2005-01-01

111

What Is the Moral Imperative of Workplace Learning: Unlocking the DaVinci Code of Human Resource Development?  

ERIC Educational Resources Information Center

In the course of the author's doctoral study, he is exploring the strategic linkages between learning activities in the modern workplace and the long-term success they bring to organisations. For many years, this challenge has been the Holy Grail of human resource (HR) development practitioners, who invest heavily on training and professional…

Short, Tom

2006-01-01

112

The Mother Relationship and Artistic Inhibition in the Lives of Leonardo da Vinci and Erik H. Erikson  

Microsoft Academic Search

In four earlier articles, I focused on the theme of the relationship of melancholia and the mother, and suggested that the\\u000a melancholic self may experience humor (Capps, 2007a), play (Capps, 2008a), dreams (Capps, 2007c), and art (Capps, 2008b) as restorative resources. I argued that Erik H. Erikson found these resources to be valuable remedies for his own melancholic\\u000a condition, which

Donald Capps

2008-01-01

113

Robot Command Interface Using an Audio-Visual Speech Recognition System  

NASA Astrophysics Data System (ADS)

In recent years audio-visual speech recognition has emerged as an active field of research thanks to advances in pattern recognition, signal processing and machine vision. Its ultimate goal is to allow human-computer communication using voice, taking into account the visual information contained in the audio-visual speech signal. This document presents a command's automatic recognition system using audio-visual information. The system is expected to control the laparoscopic robot da Vinci. The audio signal is treated using the Mel Frequency Cepstral Coefficients parametrization method. Besides, features based on the points that define the mouth's outer contour according to the MPEG-4 standard are used in order to extract the visual speech information.

Ceballos, Alexánder; Gómez, Juan; Prieto, Flavio; Redarce, Tanneguy

114

Modeling and optimal design of an optical MEMS tactile sensor for use in robotically assisted surgery  

Microsoft Academic Search

Currently, Minimally Invasive Surgery (MIS) performs through keyhole incisions using commercially available robotic surgery systems. One of the most famous examples of these robotic surgery systems is the da Vinci surgical system. In the current robotic surgery systems like the da Vinci, surgeons are faced with problems such as lack of tactile feedback during the surgery. Therefore, providing a real-time

Roozbeh Ahmadi; Masoud Kalantari; Muthukumaran Packirisamy; Javad Dargahi

2010-01-01

115

Tests of stellar model atmospheres by optical interferometry. III. NPOI and VINCI interferometry of the M0 giant ? Sagittae covering 0.5-2.2 ?m  

NASA Astrophysics Data System (ADS)

Context: .Optical interferometry allows a measurement of the intensity profile across a stellar disc, leading to a direct test and calibration of theoretical model atmospheres as well as to a precise determination of fundamental stellar parameters. Aims: .We present a comparison of the visual and near-infrared intensity profile of the M0 giant ? Sagittae to plane-parallel ATLAS 9 as well as to plane-parallel and spherical PHOENIX model atmospheres. Methods: .We use previously described visual interferometric data obtained with the Navy Prototype Optical Interferometer (NPOI) in July 2000. We apply the recently developed technique of coherent integration, and thereby obtain visibility data of more spectral channels (526-852 nm) and with higher precision than before. In addition, we employ new measurements of the near-infrared K-band (~2200 nm) diameter of ? Sagittae obtained with the instrument VINCI at the ESO VLT Interferometer (VLTI) in 2002. Results: .The spherical PHOENIX model leads to a precise definition of the Rosseland angular diameter and a consistent high-precision diameter value for our NPOI and VLTI/VINCI data sets of ?_Ross=6.06 ± 0.02 mas, with the Hipparcos parallax corresponding to R_Ross=55 ± 4~R_?, and with the bolometric flux corresponding to an effective temperature T_eff=3805 ± 55 K. Our visual visibility data close to the first minimum and in the second lobe constrain the limb-darkening effect and are generally consistent with the model atmosphere predictions. The visual closure phases exhibit a smooth transition between 0 and ?. Conclusions: .The agreement between the NPOI and VINCI diameter values increases the confidence in the model atmosphere predictions from optical to near-infrared wavelengths as well as in the calibration and accuracy of both interferometric facilities. The consistent night-by-night diameter values of VINCI give additional confidence in the given uncertainties. The closure phases suggest a slight deviation from circular symmetry, which may be due to surface features, an asymmetric extended layer, or a faint unknown companion.

Wittkowski, M.; Hummel, C. A.; Aufdenberg, J. P.; Roccatagliata, V.

2006-12-01

116

34 Development of a Robotic Prostatectomy Program  

Microsoft Academic Search

Presently, one of every eight radical prostactectomies per- formed in the United States is being done laparoscopically utilizing the da Vinci® Surgical System (Intuitive Surgical, Sunnyvale, CA). More than 115 hospitals in America use the da Vinci robot to perform radical prostatectomy. Con- tinued data collection and technical refinements are needed to address controversial issues such as positive margin rates,

Jason D. Engel; Harold A. Frazier

117

Robotic Surgery of the Kidney in Children  

Microsoft Academic Search

\\u000a Minimally invasive surgery in pediatric urology has undergone a paradigm shift with the incorporation of the da Vinci surgical\\u000a system. Following the popularity of robotic radical prostatectomy, several pediatric urological surgeries have been performed\\u000a successfully with the da Vinci robot, including pyeloplasty, nephrectomy, partial nephrectomy, ureteral reimplantation, and\\u000a appendicovesicostomy.

Sanjeev A. Kaul; Jack S. Elder

118

The Role of Robotic Surgery in Morbid Obesity  

Microsoft Academic Search

The purpose of this review was to form a collaborative opinion regarding the utility of robotic tech- nology, specifically the da Vinci™ robot (Intuitive Surgical, Inc., Sunnyvale, CA), for bariatric surgery. Eleven surgeons are currently using the da Vinci system to perform laparoscopic bariatric surgery. The surgeons were queried about the type of robotic bariatric surgery and number of cases

Garth Jacobsen; Robert Berger; Santiago Horgan

2003-01-01

119

Robotic Assistance in Cardiac Surgery  

Microsoft Academic Search

Da Vinci robotic assistance has taken minimally invasive cardiac surgery to a new frontier. Many of the surgical pro- cedures can be performed through ports resulting in less trauma and pain, reduced use of blood products, reduced hospital stay, fast functional recovery and superior cosmet- ic results. The attributes of the da Vinci robotic system, i.e., 3-dimensional vision with up

Sudhir Srivastava; Reyna Barrera; Shaune Quismundo

120

Roles and Delegation of Authority (R/DA) System  

SciTech Connect

The processes of defining managerial roles and providing for delegation of authority are essential to any enterprise. At most large organizations, these processes are defined in policy manuals and through sets of standard operating procedures for many, if not all, business and administrative functions. Many of these staff-initiated, administrative functions require the routing of documents for approval to one or more levels of management. These employee-oriented, back office types of workflows tend to require more flexibility in determining to whom these documents should go to, while, at the same time, providing the responsible parties with the flexibility to delegate their approval authority or allow others to review their work. Although this practice is commonplace in manual, paper-based processes that exist in many organizations, it is difficult to provide the same flexibility in the more structured, electronic-based, workflow systems.

ABBOTT,JOHN P.; HUTCHINS,JAMES C.; SCHOCH,DAVID G.

1999-10-21

121

Radiation tolerant D\\/A converters for the LHC cryogenic system  

Microsoft Academic Search

The electronic instrumentation of the Large Hadron Collider (LHC) cryogenic system is expected to receive a large radiation dose (41013 nc m? 2 and 1-2 kGy (Si)) within 10 years of activity so all the electronic devices should tolerate this radiation level without a significant degradation. This paper focuses on the selection of a radiation tolerant 12-bit parallel input D\\/A

Francisco J. Franco; Yi Zonga; Juan A. de Agapito; Ana C. Fernandes; Juan Casas-Cubillos; Miguel A. Rodriguez-Ruiz

122

Stereoscopic augmented reality for da Vincii(TM) robotic biliary surgery  

PubMed Central

INTRODUCTION New laparoscopic techniques put distance between the surgeon and his patient. PRESENTATION OF CASE 3D volume rendered images directly displayed in the da Vinci surgeon's console fill this gap by allowing the surgeon to fully immerse in its intervention. DISCUSSION During the robotic operation the surgeon has a greater control on the procedure because he can stay more focused not being obliged to turn is sight out of his operative field. Moreover, thanks to depth perception of the rendered images he had a precise view of important anatomical structures. CONCLUSION We describe our preliminary experience in the quest of computer-assisted robotic surgery.

Volonte, Francesco; Buchs, Nicolas C.; Pugin, Francois; Spaltenstein, Joel; Jung, Minoa; Ratib, Osman; Morel, Philippe

2013-01-01

123

Tests of stellar model atmospheres by optical interferometry. VLTI/VINCI limb-darkening measurements of the M4 giant ? Phe  

NASA Astrophysics Data System (ADS)

We present K-band interferometric measurements of the limb-darkened (LD) intensity profile of the M 4 giant star ? Phoenicis obtained with the Very Large Telescope Interferometer (VLTI) and its commissioning instrument VINCI. High-precision squared visibility amplitudes in the second lobe of the visibility function were obtained employing two 8.2 m Unit Telescopes (UTs). This took place one month after light from UTs was first combined for interferometric fringes. In addition, we sampled the visibility function at small spatial frequencies using the 40 cm test siderostats. Our measurement constrains the diameter of the star as well as its center-to-limb intensity variation (CLV). We construct a spherical hydrostatic PHOENIX model atmosphere based on spectrophotometric data from the literature and compare its CLV prediction with our interferometric measurement. We compare as well CLV predictions by plane-parallel hydrostatic PHOENIX, ATLAS 9, and ATLAS 12 models. We find that the Rosseland angular diameter as predicted by comparison of the spherical PHOENIX model with spectrophotometry is in good agreement with our interferometric diameter measurement. The shape of our measured visibility function in the second lobe is consistent with all considered PHOENIX and ATLAS model predictions, and is significantly different to uniform disk (UD) and fully darkened disk (FDD) models. We derive high-precision fundamental parameters for ? Phe, namely a Rosseland angular diameter of 8.13 ± 0.2 mas, with the Hipparcos parallax corresponding to a Rosseland linear radius R of 86 ± 3 R?, and an effective temperature of 3550 ± 50 K, with R corresponding to a luminosity of \\log L/L?=3.02 ± 0.06. Together with evolutionary models, these values are consistent with a mass of 1.3 ± 0.2 M?, and a surface gravity of \\log g = 0.68 ± 0.11. Based on public data released from the European Southern Observatory VLTI obtained from the ESO/ST-ECF Science Archive Facility. The VLTI was operated with the commissioning instrument VINCI and the MONA beam combiner.

Wittkowski, M.; Aufdenberg, J. P.; Kervella, P.

2004-01-01

124

QoE assessment of VoIP over IEEE 802.16 networks with DaVinci codes using E-model  

Microsoft Academic Search

The authors contribute to the spectrum of quality of experience (QoE) research by defining simulation platform for evaluation of VoIP quality of experience over a wireless WiMAX link. In particular the authors show how the Matlab\\/Simulink and ns2 integration can be facilitated to tackle the QoE aspects in a comprehensive manner. Furthermore the process of measuring QoE using an off-line

Adam FLIZIKOWSKI; Mateusz MAJEWSKI; Marcin PRZYBYSZEWSKI

2010-01-01

125

Institutional report - Thoracic non-oncologic Extended videoscopic robotic thymectomy with the da Vinci telemanipulator for the treatment of myasthenia gravis: the Vienna experience  

Microsoft Academic Search

Surgical treatment of myasthenia gravis should include the complete resection of the thymus with the whole fatty tissue adherent to the pericardium for immunologic as well as oncologic reasons. The aim of the current study was to investigate the efficacy and safety of robotic approach. A total of 18 patients with myasthenia gravis (mean age 44 years) have been operated

Tatjana Fleck; Michael Fleck; Michael Muller; Helmut Hager; Walter Klepetko; Ernst Wolner; Wilfried Wisser

126

Imaging atherosclerosis with hybrid [18F]fluorodeoxyglucose positron emission tomography/computed tomography imaging: what Leonardo da Vinci could not see.  

PubMed

Prodigious efforts and landmark discoveries have led toward significant advances in our understanding of atherosclerosis. Despite significant efforts, atherosclerosis continues globally to be a leading cause of mortality and reduced quality of life. With surges in the prevalence of obesity and diabetes, atherosclerosis is expected to have an even more pronounced impact upon the global burden of disease. It is imperative to develop strategies for the early detection of disease. Positron emission tomography (PET) imaging utilizing [(18)F]fluorodeoxyglucose (FDG) may provide a non-invasive means of characterizing inflammatory activity within atherosclerotic plaque, thus serving as a surrogate biomarker for detecting vulnerable plaque. The aim of this review is to explore the rationale for performing FDG imaging, provide an overview into the mechanism of action, and summarize findings from the early application of FDG PET imaging in the clinical setting to evaluate vascular disease. Alternative imaging biomarkers and approaches are briefly discussed. PMID:23073913

Cocker, Myra S; Mc Ardle, Brian; Spence, J David; Lum, Cheemun; Hammond, Robert R; Ongaro, Deidre C; McDonald, Matthew A; Dekemp, Robert A; Tardif, Jean-Claude; Beanlands, Rob S B

2012-12-01

127

Influence of D/A ratio on photovoltaic performance of a highly efficient polymer solar cell system.  

PubMed

A new copolymer PIDTDTQx based on indacenodithiophene and quinoxaline is synthesized and characterized. The correlation between the D/A ratio, mobility, and photovoltaic properties, as well as morphology of the D/A blend based on a PIDTDTQx:PC(70) BM system is investigated. The power conversion efficiency of the polymer solar cells based on PIDTDTQx/PC(70) BM (1:4, w/w) reaches 7.51%. PMID:23044822

Guo, Xia; Zhang, Maojie; Tan, Jiahui; Zhang, Shaoqing; Huo, Lijun; Hu, Wenping; Li, Yongfang; Hou, Jianhui

2012-10-09

128

Refurbishment, reloading of the Da Lat Nuclear Research Reactor and renovation of its control system  

SciTech Connect

As the main scientific tool at the Nuclear Research Institute (NRI), the Da Lat Nuclear Research Reactor is playing a special role in the development of nuclear application in Viet Nam. Reconstructed from the previous TRIGAMARK II, it has been operating since, 1984, totalling 13,500 hrs. Since November 1992 it has undergone a general inspection followed by a complete refurbishment in response to technical requirement for ensuring its reliability and safety. The reactor, shut down for main inspection and refurbishment tasks until March 1993, was put into operation alternately with the remaining refurbishment works. In pullet the renovation of its control and instrumentation system has been carried out. This has been thought necessary due to spare part procurement problems and the need to modernize the system for improving its reliability. Finally, a programme for reloading the reactor core is being implemented, in order to increase its reserve reactivity.

Tran Ha Anh; Tran Khacan; Trinh Dinh Hal [Nuclear Research Institute, Dalat (Viet Nam)] [and others

1994-12-31

129

Robotic-assisted laparoscopic pyeloplasty: initial Australasian experience  

Microsoft Academic Search

Laparoscopic dismembered pyeloplasty has a success rate in excess of 90% for the treatment of uretero-pelvic junction (UPJ)\\u000a obstruction. Laparoscopic intracorporeal suturing, however, remains technically challenging and may lead to prolonged operating\\u000a times. Robotic-assisted suturing using the da Vinci® surgical system (Intuitive Surgical, CA, USA) may reduce the difficulty associated with intra-corporeal suturing. The da Vinci® surgical system was used to facilitate

Rohan Matthew Hall; Declan G. Murphy; Ben Challacombe; Anthony J. Costello; Jamie Kearsley

2010-01-01

130

Small Delay and High Performance AD/DA Converters of Lease Circuit System for AM&FM Broadcast  

NASA Astrophysics Data System (ADS)

Many AM&FM broadcasting stations in Japan are connected by the leased circuit system of NTT. Small delay and high performance AD/DA converter was developed for the system. The system was designed based on ITU-T J.41 Recommendation (384kbps), the transmission signal is 11bit-32 kHz where the Gain-frequency characteristics between 40Hz to 15kHz have to be quite flat. The ??AD/DA converter LSIs for audio application in the market today realize very high performance. However the performance is not enough for the leased circuit system. We found that it is not possible to meet the delay and Gain-frequency requirements only by using ??AD/DA converter LSI in normal operation, because 15kHz the highest frequency and 16kHz Nyquist frequency are too close, therefore there are aliasing around Nyquist frequency. In this paper, we designed AD/DA architecture having small delay (1msec) and sharp cut off LPF (100dB attenuation at 16kHz, and 1500dB/Oct from 15kHz to 16kHz) by operating ??AD/DA converter LSIs over-sampling rate such as 128kHz and by adding custom LPF designed Infinite Impulse Response (IIR) filter. The IIR filter is a 16th order elliptic type and it is consist of eight biquad filters in series. We described how to evaluate the stability of IIR filter theoretically by calculating frequency response, Pole and Zero Layout and impulse response of each biquad filter, and experimentally by adding overflow detection circuit on each filters and input overlord signal.

Takato, Kenji; Suzuki, Dai; Ishii, Takashi; Kobayashi, Masato; Yamada, Hirokazu; Amano, Shigeru

131

gLExec and MyProxy integration in the ATLAS/OSG PanDA workload management system  

NASA Astrophysics Data System (ADS)

Worker nodes on the grid exhibit great diversity, making it difficult to offer uniform processing resources. A pilot job architecture, which probes the environment on the remote worker node before pulling down a payload job, can help. Pilot jobs become smart wrappers, preparing an appropriate environment for job execution and providing logging and monitoring capabilities. PanDA (Production and Distributed Analysis), an ATLAS and OSG workload management system, follows this design. However, in the simplest (and most efficient) pilot submission approach of identical pilots carrying the same identifying grid proxy, end-user accounting by the site can only be done with application-level information (PanDA maintains its own end-user accounting), and end-user jobs run with the identity and privileges of the proxy carried by the pilots, which may be seen as a security risk. To address these issues, we have enabled PanDA to use gLExec, a tool provided by EGEE which runs payload jobs under an end-user's identity. End-user proxies are pre-staged in a credential caching service, MyProxy, and the information needed by the pilots to access them is stored in the PanDA DB. gLExec then extracts from the user's proxy the proper identity under which to run. We describe the deployment, installation, and configuration of gLExec, and how PanDA components have been augmented to use it. We describe how difficulties were overcome, and how security risks have been mitigated. Results are presented from OSG and EGEE Grid environments performing ATLAS analysis using PanDA and gLExec.

Caballero, J.; Hover, J.; Litmaath, M.; Maeno, T.; Nilsson, P.; Potekhin, M.; Wenaus, T.; Zhao, X.

2010-04-01

132

VXI based multibunch detector and QPSK modulator for the PEP-II/ALS/DA{Phi}NE longitudinal feedback system  

SciTech Connect

The PEP-II/ALS/DA{Phi}NE feedback systems are complex systems implemented using analog, digital and microwave circuits. The VXI hardware implementation for the Front-end and Back-end analog processing modules is presented. The Front-end module produces a baseband beam phase signal from pickups using a microwave tone burst generator. The Back-end VXI module generates an AM/QPSK modulated signal from a baseband correction signal computed in a digital signal processor. These components are implemented in VXI packages that allow a wide spectrum of system functions including a 120 MHz bandwidth rms detector, reference phase servo, woofer link to the RF control system, standard VXI status/control, and user defined registers. The details of the design and implementation of the VXI modules including performance characteristics are presented.

Young, A.; Fox, J.; Teytelman, D.

1997-04-01

133

Is the Geological Past a Key to the (Near) Future?  

Microsoft Academic Search

Ever since Leonardo da Vinci unearthed beds of fossil marine shells in the Tuscan hills, the record of the past has been challenging conventional theories of climate. Sages of da Vinci's day had a proper explanation for the shells. The clams and snails had drifted into the hills with the waters of the Biblical Flood. But da Vinci didn't think

Elizabeth Culotta

1993-01-01

134

Robotics in paediatric urology  

Microsoft Academic Search

After the emergence of robotically assisted systems in laparoscopic surgery more than 15 years ago, several systems have been on the market. At the time being only one system, the da Vinci surgical system (Intuitive Surgical, Sunnyvale, CA, USA), has survived in clinical use with an increasing spread particularly among adult urologists used primarily for radical prostatectomies. However, the reconstructive

Lars Henning Olsen

2006-01-01

135

Reflections on Post-16 Strategies in European Countries. Interim Report of the Leonardo da Vinci/Multiplier Effect Project III.3.a. Priority 2: Forging Links between Educational Establishments and Enterprises (1997-2000) ID 27009. Working Papers, No. 9.  

ERIC Educational Resources Information Center

|This four-part publication contains 19 papers on educational practices and promises for post-16 education in European countries. Part I, the introduction, contains these three papers: "Sharpening Post-16 Education Strategies: Building on the Results of the Previous Projects" (Johanna Lasonen); "'Parity of Esteem' and 'Integrated…

Stenstrom, Marja-Leena, Ed.

136

Solution NMR Structure of the 48-kDa IIAMannose-HPr Complex of the Escherichia coli Mannose Phosphotransferase System*  

PubMed Central

The solution structure of the 48-kDa IIAMan-HPr complex of the mannose branch of the Escherichia coli phosphotransferase system has been solved by NMR using conjoined rigid body/torsion angle-simulated annealing on the basis of intermolecular nuclear Overhauser enhancement data and residual dipolar couplings. IIAMan is dimeric and has two symmetrically related binding sites per dimer for HPr. A convex surface on HPr, formed primarily by helices 1 and 2, interacts with a deep groove at the interface of the two subunits of IIAMan. The interaction surface on IIAMan is predominantly helical, comprising helix 3 from the subunit that bears the active site His-10 and helices 1, 4, and 5 from the other subunit. The total buried accessible surface area at the protein-protein interface is 1450 Å2. The binding sites on the two proteins are complementary in terms of shape and distribution of hydrophobic, hydrophilic, and charged residues. The active site histidines, His-10 of IIAMan and His-15 (italics indicate HPr residues) of HPr, are in close proximity. An associative transition state involving a pentacoordinate phosphoryl group with trigonal bipyramidal geometry bonded to the N-?2 atom of His-10 and the N-?1 atom of His-15 can be readily formed with negligible displacement in the backbone coordinates of the residues immediately adjacent to the active site histidines. Comparing the structures of complexes of HPr with three other structurally unrelated phosphotransferase system proteins, enzymes I, IIAglucose, and IIAmannitol, reveals a number of common features that provide a molecular basis for understanding how HPr specifically recognizes a wide range of diverse proteins.

Williams, David C.; Cai, Mengli; Suh, Jeong-Yong; Peterkofsky, Alan; Clore, G. Marius

2005-01-01

137

Tactile Feedback Induces Reduced Grasping Force in Robot-Assisted Surgery  

Microsoft Academic Search

Robot-assisted minimally invasive surgery has gained widespread use over the past decade, but the technique is currently operated in the absence of haptic feedback during tissue manipulation. We have developed a complete tactile feedback system, consisting of a piezoresistive force sensor, control system, and pneumatic balloon tactile display, and mounted directly onto a da Vinci surgical robotic system. To evaluate

Chih-hung King; Martin O. Culjat; Miguel L. Franco; Catherine E. Lewis; Erik P. Dutson; Warren S. Grundfest; James W. Bisley

2009-01-01

138

Robot-assisted laparoscopic mesh repair of incisional hernias with exclusive intracorporeal suturing: a pilot study  

Microsoft Academic Search

Background  The da Vinci robot laparoscopic incisional hernia repair with intracorporeal suturing may offer an alternative to transabdominal\\u000a sutures and tackers.\\u000a \\u000a \\u000a \\u000a Methods  From 2003 to 2005, 11 patients (median age, 71 years; median body mass index [BMI], 28) with small and medium-sized incisional\\u000a hernias (median fascial defect, 19.6 cm2) were treated with the da Vinci robot system using intracorporeal mesh fixation with

C. Tayar; M. Karoui; D. Cherqui; P. L. Fagniez

2007-01-01

139

Dexterity enhancement with robotic surgery  

Microsoft Academic Search

Background The aim of this study was to quantify the extent of dexterity enhancement in robotic surgery as compared to laparoscopic surgery. Methods Ten surgeons with varying laparoscopic suturing experience were asked to place three sutures on a suture pad. The sutures were placed laparoscopically, robotically with 2-D vision and robotically with 3-D vision. The da Vinci system’s Application Programming

K. Moorthy; Y. Munz; A. Dosis; J. Hernandez; S. Martin; F. Bello; T. Rockall; A. Darzi

2004-01-01

140

Identification of Octenal-Related dA and dC Adducts Formed by Reactions with a Hemin-?-6-fat Peroxidation Model System.  

PubMed

Deoxynucleosides were reacted in a lipid peroxidation model system, emulsified hemin-ethyl linoleate, and the adducts thus produced were analyzed by HPLC. Substantial amounts of stable adducts were detected in the dA- and dC-reaction mixtures. The structures of the major dA and dC adducts, other than the known 4-oxo-2-nonenal adducts, were determined to be etheno-type adducts, with a C6 side chain bearing an ?-hydroxyl-group. These results suggested that the substance involved in adduct formation is 2,3-epoxyoctanal. This compound showed mutagenicity in Salmonella strains TA 100 and TA 104 without the S-9 mix. In addition, based on the structure of a minor dC adduct, another possibly involved mutagen, 4-oxo-2-octenal, was proposed. These mutagens may be formed during storage and cooking of food, or during digestion, and may be involved in human cancers. PMID:24032558

Kawai, Kazuaki; Kawasaki, Yuya; Kubota, Yumiko; Kimura, Tomoyuki; Sawa, Ryuichi; Matsuda, Tomonari; Kasai, Hiroshi

2013-10-01

141

Performance analysis of DA and DD multiuser tap weight estimators for short code DS-CDMA systems  

Microsoft Academic Search

We investigate the performance of three multiuser tap weight estimators for multipath channels in data aided (DA) and decision directed (DD) modes for a BPSK DS-CDMA reverse link. The tap weights are estimated using different algorithms working separately or jointly in order to obtain good estimates as required for coherent detection or synchronization purposes. The performance of these algorithms and

M. Guenach; L. Vandendorpe

2002-01-01

142

VINCI \\/ VLTI observations of Main Sequence stars  

Microsoft Academic Search

Main Sequence (MS) stars are by far the most numerous class in the Universe.\\u000aThey are often somewhat neglected as they are relatively quiet objects (but\\u000aexceptions exist), though they bear testimony of the past and future of our\\u000aSun. An important characteristic of the MS stars, particularly the solar-type\\u000aones, is that they host the large majority of the

P. Kervella; F. Thevenin; P. Morel; J. Provost; G. Berthomieu; D. Segransan; D. Queloz; P. Borde; E. Di Folco; T. Forveille

2003-01-01

143

Establishment of a genetic transformation system for the marine pennate diatom Fistulifera sp. strain JPCC DA0580--a high triglyceride producer.  

PubMed

A genetic transformation system for the marine pennate diatom, Fistulifera sp. JPCC DA0580, was established using microparticle bombardment methods. Strain JPCC DA0580 has been recently identified as the highest triglyceride (60 % w/w) producer from a culture collection of 1,393 strains of marine microalgae, and it is expected to be a feasible source of biodiesel fuel. The transformation conditions for strain JPCC DA0580 were optimised using the green fluorescent protein gene (gfp) and the gene encoding neomycin phosphotransferase II (nptII). The most efficient rate of transformation was attained when tungsten particles (0.6 ?m in diameter) were used for microparticle bombardment. The effect of endogenous and exogenous promoters on the expression of nptII was examined. Endogenous promoters were more efficient for obtaining transformants compared with exogenous promoters. Southern hybridisation analysis suggested that nptII integrated into the nuclear genome. This genetic manipulation technique should allow us to understand the mechanisms of high triglyceride accumulation in this strain, thereby contributing to improving BDF production. PMID:22555859

Muto, Masaki; Fukuda, Yorikane; Nemoto, Michiko; Yoshino, Tomoko; Matsunaga, Tadashi; Tanaka, Tsuyoshi

2012-05-04

144

[Robot-assisted laparoscopic radical prostatectomy].  

PubMed

The advantage of minimally invasive surgery in the form of laproscopic radical prostatectomy compared with open retropubic radical prostatectomy is indisputable. But a long learning curve seems to be a clear disadvantage. Robotic surgery devices such as the da Vinci system could be very helpful here. The aim of this study was to demonstrate our own experience with da Vinci prostatectomy in consideration of the learning curve. Since implementation of the da Vinci system 23 months ago, we have done over 300 operating procedures with the system. Despite of having great know how in laparoscopic surgery the conversion rate was only 1.7%. The oncological outcome was satisfactory and comparable with the results reported in the literature. A complication rate of only 5.1% also seems acceptable. With the da Vinci system, we can combine the advantages of a minimally invasive procedure with those of open surgery but without the disadvantage of a long learning curve. At the moment, the expense factor remains a handicap. PMID:18338153

Rotering, J; Siemer, S; Stöckle, M

2008-04-01

145

Center of Cardiac Surgery Robotic Computerized Telemanipulation as Part of a Comprehensive Approach to Advanced Heart Care.  

National Technical Information Service (NTIS)

The Assessment of Robotic CABG Experience and Training (TARGET) Program is a collaborative project between the Thomas Jefferson University and Hospital. The award received allowed TJU/TJUH to support the purchase of the daVinci robot system with matching ...

C. Lallas D. J. Whellan D. S. Berg G. Marhefka J. Diehl

2011-01-01

146

Transoral Robotic Surgery with Laser for Head and Neck Cancers: A Feasibility Study  

Microsoft Academic Search

Aims: To assess the feasibility of a flexible thulium laser coupled with a novel robotic introducer for head and neck cancers. Methods: In a prospective nonrandomized clinical trial, 58 patients were evaluated. When indicated, transoral robotic surgery (TORS) with laser was performed using an Intuitive da Vinci S System with the Intuitive Surgical® Endo Wrist Introducer, 5Fr to hold and

Marco Benazzo; Pietro Canzi; Antonio Occhini

2012-01-01

147

Robotic mitral valve surgery: A United States multicenter trial  

Microsoft Academic Search

Objective: In a prospective phase II Food and Drug Administration trial, robotic mitral valve repairs were performed in 112 patients at 10 centers by using the da Vinci surgical system. The safety of performing valve repairs with computerized telemanipulation was studied. Methods: After institutional review board approval, informed consent was obtained. Patients had moderate to severe mitral regurgitation. Operative technique

L. Wiley Nifong; W. R. Chitwood; P. S. Pappas; C. R. Smith; M. Argenziano; V. A. Starnes; P. M. Shah

2005-01-01

148

Gaze contingent articulated robot control for robot assisted minimally invasive surgery  

Microsoft Academic Search

This paper introduces a novel technique for controlling an articulated robotic device through the eyes of the surgeon during minimally invasive surgery. The system consists of a binocular eye-tracking unit and a robotic instrument featuring a long, rigid shaft with an articulated distal tip for minimally invasive interventions. They have been integrated into a daVinci surgical robot to provide a

David P. Noonan; George P. Mylonas; Ara Darzi; Guang-zhong Yang

2008-01-01

149

Telesurgical Laparoscopic Radical Prostatectomy  

Microsoft Academic Search

Introduction: Telepresence surgery offers theoretically to overcome two main problems of laparoscopic surgery, i.e. the limitation to only four degrees of freedom and the lack of stereovision. Since 1998, telesurgical minimally invasive procedures have been performed with the da Vinci system mainly for cardiac bypass surgery. Clinical experience in urology is still very limited. We want to present our initial

Jens Rassweiler; Thomas Frede; Othmar Seemann; Christian Stock; Ludger Sentker

2001-01-01

150

What is the value of telerobotic technology in gastrointestinal surgery?  

Microsoft Academic Search

Background: Although telerobotic technology has entered clinical application, its value for gastrointestinal surgery is unclear. Our objective was to evaluate the performance characteristics of telerobotically assisted laparoscopic cholecystectomy (TALC). Methods: All TALCs performed using the da Vinci Surgical System between January 2000 and September 2001 at a tertiary academic medical center were analyzed. Results: For this study, 20 patients (80%

A. Perez; M. J. Zinner; S. W. Ashley; D. C. Brooks; E. E. Whang

2003-01-01

151

Outcomes after robot-assisted laparoscopic radical prostatectomy  

Microsoft Academic Search

Robot-assisted laparoscopic radical prostatectomy (RALRP) using the da Vinci surgical system is now in widespread use in many countries where economic conditions allow the installation of this expensive technology. Controversy has surrounded the procedure since it was first performed in 2000, with many critics highlighting the lack of evidence to support its use. However, despite the lack of level I

Declan G. Murphy; Benjamin J. Challacombe; Anthony J. Costello

2009-01-01

152

TACIT KNOWLEDGE, LEARNING EXPERIENCES, SCAFFOLDINGS AND WIRELESS CONNECTIONS: HOW WORK CONTEXTS CAN INFLUENCE WORKERS' INFORMAL LEARNING AND SUITABLE TECHNOLOGIES CAN ENHANCE LEARNING ORGANISATIONS  

Microsoft Academic Search

The paper describes a project that aimed to develop a knowledge management system, which also became a continuous learning experience supporting workers and organisation growth over time. The project was developed within the Leonardo da Vinci Programme 1 and addressed a very particular business context: work safety and occupational health within \\

Marinoni Clementina; Eugenio Capra

153

Chapter 12 The anatomical foundations of clinical neurology  

Microsoft Academic Search

The chapter provides an itinerary of knowledge on nervous system anatomy as one of the pillars of clinical neurology. The journey starts from the Renaissance explosion on the approach to the human body, its functions and its diseases, dealing with the seminal contributions of Leonardo da Vinci and Vesalius. The itinerary proceeds through the contributions of the 17th century, especially

Marina Bentivoglio; Paolo Mazzarello

2009-01-01

154

Malpighi and the Discovery of Capillaries  

Microsoft Academic Search

Leonardo da Vinci clearly observed and described capillaries. Using the microscope, Marcello Malpighi examined the brain and major organs to demonstrate their finer anatomical features. This led to his discovery in 1661, of capillaries that proved fundamental to our understanding of the vascular system in the brain and cord. He hypothesized that capillaries were the connection between arteries and veins

J. M. S. Pearce

2007-01-01

155

Longitudinal and transverse kickers for the bunch-by-bunch feedback systems of the Frascati {Phi}-factory DA{Phi}NE  

SciTech Connect

The development of very efficient longitudinal and transverse bunch-by-bunch feedback systems is one of the fundamental aspects for the operation of the high-current storage rings. The last part of the feedback chain is a kicker whose efficiency impacts directly on the system cost. The design and measurements of the DA{Phi}NE longitudinal and transverse kickers are presented here. The longitudinal kicker design is based on a waveguide overloaded cavity, while a more conventional stripline structure has been chosen for the transverse kicker. The design of both devices has been optimised in order to increase the shunt impedance, i.e., their efficiency, and to lower the content of parasitic higher-order modes that could further excite coupled-bunch instabilities. {copyright} {ital 1997 American Institute of Physics.}

Boni, R.; Gallo, A.; Ghigo, A.; Marcellini, F.; Serio, M.; Spataro, B.; Zobov, M. [INFN Laboratori Nazionali di Frascati, 00044 Frascati (Roma) (Italy)

1997-01-01

156

Multi-bunch instability diagnostics via digital feedback systems at PEP-II, DA?NE, ALS and SPEAR  

Microsoft Academic Search

Longitudinal feedback systems based on a common programmable DSP architecture have been commissioned at 4 laboratories. In addition to longitudinal feedback and beam diagnostics these flexible systems have been programmed to provide diagnostics for transverse motion. The diagnostic functions are based on transient domain techniques which record the response of every bunch while the feedback system manipulates the beam. Operational

J. Fox; R. Larsen; S. Prabhakar; D. Teytelman; A. Young; A. Drago; M. Serio; W. Barry; G. Stover

1999-01-01

157

Seroprevalence and risk factors of toxoplasmosis in cattle from extensive and semi-intensive rearing systems at Zona da Mata, Minas Gerais state, Southern Brazil  

PubMed Central

Background Concerning the infection of humans by T. gondii, limited efforts have been directed to the elucidation of the role of horizontal transmission between hosts. One of the main routes of transmission from animals to humans occurs through the ingestion of raw or insufficiently cooked meat. However, even though the detection of T. gondii in meat constitutes an important short-term measure, control strategies can only be accomplished by a deeper understanding of the epidemiology of toxoplasmosis. The present study aimed to investigate the seroprevalence of toxoplasmosis in cattle from Zona da Mata, Minas Gerais, Brazil, and to identify associated risk factors, through an epidemiological investigation. Methods The animals studied (Bos indicus, breed Nelore or Gir) were reared in the Zona da Mata micro-region and killed at a commercial slaughterhouse at Juiz de Fora, Minas Gerais state. The animals came from 53 cattle farms with extensive (predominantly pasture feeding management) or semi-intensive (food management based on grazing, salt mineral and feed supplementation) rearing systems. Blood samples were collected from 1200 animals, and assigned to Indirect Fluorescent Antibody Test. Results When analyzing IgG anti-T.gondii we found an overall seroprevalence of 2.68%. In Brazil prevalences vary from 1.03% to 60%. Although in the present study, the seroprevalence per animal is considered low compared to those observed in other studies, we found out that of the 53 farms analyzed, 17 (34.69%) had one or more positive cattle. It is a considerable percentage, suggesting that the infection is well distributed through the Zona da Mata region. The results of the epidemiological investigation showed that the main risk factors of Toxoplasma gondii infection are related to animal management and to the definive host. There was a relationship between the number of seropositive cattle and the presence and number of resident cats, presence and number of stray cats, presence of cats walking freely, rat control by using cats and feed storage. Conclusion These results may contribute to the development of preventive strategies in Brazil and other developing countries were extensive and semi-intensive cattle rearing systems are very widespread and the efforts to control this important zoonotic disease have attained little success.

2013-01-01

158

Development of an Automatic System for Plotting Synoptic Charts Desenvolvimento Do Sistema de Automacao DA Plotagem de Cartas Sinoticas.  

National Technical Information Service (NTIS)

A computerized system for acquisition and presentation of weather data is discussed. Weather and navigation charts (sea and air) based on the resultant data are plotted with greater speed and accuracy.

M. F. P. Sepulveda J. A. G. Pereira

1980-01-01

159

Comportamento dos sistemas de medicao em funcao da tarifa horosazonal - THS. (Measure systems behaviour based in season custom tariff).  

National Technical Information Service (NTIS)

The different measure systems are evaluated, based in the season custom tariff establishment, resulting in the load modulation and load reduction, during peak hour. Comparative analysis of the load curves are elaborated before and after the new tariff int...

S. Yshimaru A. A. Castro

1992-01-01

160

Robot-Assisted Laparoscopic Ultrasound  

Microsoft Academic Search

\\u000a Novel tools for existing robotic surgical systems present opportunities for exploring improved techniques in minimally invasive\\u000a surgery. Specifically, intraoperative ultrasonography is a tool that is being used with increased frequency, yet has limitations\\u000a with existing laparoscopic systems. The purpose of this study was to develop and to evaluate a new ultrasound system with\\u000a the da Vinci\\u000a ® Surgical System (Intuitive

Caitlin M. Schneider; Gregory W. Dachs; Christopher J. Hasser; Michael A. Choti; Simon P. DiMaio; Russell H. Taylor

2010-01-01

161

Computer-Enhanced ``Robotic'' Cardiac Surgery: Experience In 148 Patients  

Microsoft Academic Search

Objective: A computer-enhanced instrumentation system was used in 148 patients to minimize access in cardiac surgical procedures. Methods: The da Vinci telemanipulation system (Intuitive Surgical, Mountain View, Calif) provides a high-resolution 3-dimensional videoscopic image and allows remote, tremor-free, and scaled control of endoscopic surgical instruments with 6 degrees of freedom. By April 2000, the system had been used in 131

Friedrich W. Mohr; Volkmar Falk; Anno Diegeler; Thomas Walther; Jan F. Gummert; J. Buccerius; Stefan Jacobs; Rüdiger Autschbach

2001-01-01

162

Da história da arte para as mídias  

Microsoft Academic Search

Numa leitura semiótica, o texto apresenta referenciais teóricos da história da arte que podem servir como elementos de reflexão sobre os aspectos criativos do design gráfico em ilustrações jornalísticas ou anúncios publicitários. Objetiva estabelecer conexões entre os princípios discutidos no campo artístico e as características das produções midiáticas, o que foi assunto da tese de doutorado do autor. Palavras-chave: história

História da Arte

163

Multi-imager compatible actuation principles in surgical robotics  

Microsoft Academic Search

Today's most successful surgical robots are perhaps surgeon-driven systems, such as the daVinci (Intuitive Surgical Inc., USA, www.intuitivesurgical.com). These have already enabled surgery that was unattainable with classic instrumentation; however, at their present level of development, they have limited utility. The drawback of these systems is that they are independent self-contained units, and as such, they do not directly take

Dan Stoianovici

2005-01-01

164

Early experiences of robotic surgery in children  

Microsoft Academic Search

  Background: Laparoscopic surgery using a robotic system (Da Vinci) was recently introduced into surgical practice for adult\\u000a patients. To investigate the feasibility of this system in pediatric surgery, laparoscopic fundoplication (Thal and Nissen),\\u000a cholecystectomy, and bilateral salpingo-oophorectomy were performed. Methods: Eleven children with a mean age of 12 years\\u000a (range, 7–16 years) underwent either laparoscopic anterior partial fundoplication (Thal, n

C. N. Gutt; B. Markus; Z. G. Kim; D. Meininger; L. Brinkmann; K. Heller

2002-01-01

165

First experiences with robotic-assisted laparoscopic cholecystectomies  

Microsoft Academic Search

Summary  \\u000a Background: The recent introduction of surgical robotic systems marks a new milestone in surgical medicine comparable to the laparoscopic\\u000a approach in the late 1980s. At Innsbruck University Hospital we have been using the da Vinci™ robotic system (Intuitive Surgical,\\u000a Mountain View, CA, USA) since June 2001. Our first general surgical experiences with this device and laparoscopic cholecystectomies\\u000a are reported

J. Bodner; T. Schmid; H. Wykypiel; E. Bodner

2002-01-01

166

Robotic Technology  

Microsoft Academic Search

Robotic surgery is an evolving and exciting field. We discuss the history of robotics in general and its introduction into\\u000a medicine. Specific details of robotics in urology then follow with an introduction to the available systems. The chapter then\\u000a concentrates on the da Vinci system which is currently the unchallenged master-slave platform. Comparisons between first and\\u000a second generations of the

Oussama Elhage; Nicholas Hegarty

167

Robotics in Urology: Past, Present, and Future  

Microsoft Academic Search

\\u000a Urology robots have gained immense popularity with the da Vinci® Surgical System (Intuitive Surgical Inc., Sunnyvale, CA). Yet, the potential of robots lies much further ahead especially\\u000a with developments in image-guided intervention. Numerous research systems are under development for urology applications.\\u000a These are expected to allow safer and more homogeneous outcomes with less variability of surgeon performance and perform tasks

Pierre Mozer; Jocelyne Troccaz; Dan Stoianovici

168

On the trail of Leonardo  

PubMed Central

A night course taken almost 25 years ago sparked an interest in Leonardo da Vinci that has become a passion for a London, Ont., neurosurgeon. Dr. Rolando Del Maestro now boasts one of the largest collections of da Vinci artifacts in North America.

Johnston, P

1998-01-01

169

Development of an integrated torque sensor-motor module for haptic feedback in teleoperated robot-assisted surgery  

Microsoft Academic Search

In robot-assisted surgery, haptic feedback is ongoing issue. The breaking of surgical suture material and the damage of tissue are avoidable with haptic feedback. This paper is proposing to add haptic feedback in the da Vinci like robot using unmodified da Vinci surgical instrument. To overcome the restriction of space and difficulty in measuring the force at the end-effector, the

Seunghwan Kim; Daehie Hong; Jung-Hoon Hwang; Bongseok Kim; Samuel W. Choi

2009-01-01

170

Physical Activity Monitoring: Gadgets and Uses. Article #6 in a 6-Part Series  

ERIC Educational Resources Information Center

|An early 15th century drawing by Leonardo da Vinci depicted a device that used gears and a pendulum that moved in synchronization with the wearer as he or she walked. This is believed to be the early origins of today's physical activity monitoring devices. Today's devices have vastly expanded on da Vinci's ancient concept with a myriad of options…

Mears, Derrick

2010-01-01

171

[Robotics-assisted laparoscopic colorectal resection].  

PubMed

The value of laparoscopic surgery for rectal cancer is still controversially discussed. Robotics offers the opportunity to leave the limitations of conventional laparoscopy behind us. The three-dimensional visualization and the superior dexterity by wristed instruments should be particularly helpful in complex laparoscopic procedures in confined spaces such as the small pelvis. Colorectal resections using the Da Vinci® system are well established and becoming increasingly more standard procedures. Nerve-sparing total mesorectal excision in patients with rectal cancer, total mesocolic excision in patients with right-sided colon cancer and rectopexy in patients with pelvic floor insufficiency are the most promising indications. The prospective randomized ROLARR study has been evaluating the application of the Da Vinci® system in laparoscopic rectal cancer surgery since 2011. Besides the currently available clinical data the perioperative and intraoperative logistics and strategy will be presented in detail. PMID:23942962

Mann, B; Virakas, G; Blase, M; Soenmez, M

2013-08-01

172

[Sacropolpopexy - pro robotic].  

PubMed

Abdominal sacrocolpopexy is a standard procedure for the correction of pelvic organ prolapse of all three compartments and can also be performed minimally invasively without compromising efficacy as by open techniques. In comparison to conventional laparoscopy robotic-assisted laparoscopic sacrocolpopexy benefits from several technical stand-alone features, such as three-dimensional view, increased degrees of freedom through angulated instruments, tremor filter and up and down scaling of instrument movements. These advantages facilitate preparation of the vesicovaginal and rectovaginal spaces as well as suturing and reperitonealization, which should lead to decreased operation time and anesthesia time in extreme Trendelenburg position. Surgeon also benefit from the much more ergonomic working conditions of the da Vinci® system: however, comparative studies are rare and conclusions are preliminary. The German reimbursement system (DRG) does not adequately cover da Vinci expenses which, despite the obvious advantages represents the most significant obstacle in the propagation of this technique. PMID:22526191

Hampel, C; Thomas, C; Thüroff, J W; Roos, F

2012-05-01

173

[Total port-access robot-assisted lobectomy for lung cancer].  

PubMed

We reported 2 cases of total port-access right lower lobectomy with hilar and mediastinal lymph nodal dissection using the da Vinci surgical system through subcostal trans-diaphragmatic approach. In case 1, the operating time was 6 hours 00 minutes, and the total blood loss was little. In case 2, the operating time was 6 hours 30 minutes, and the total blood loss was little. The da Vinci surgical system provides a high-resolution stereoscopic image and allows remote, tremor-free, and scaled control of endoscopic surgical instruments with 7 degrees of freedom. Minimally invasive robot-assisted lobectomy is an effective procedure and may add benefits for both surgeon and patients. PMID:22647326

Tanaka, Yusuke; Oda, Makoto; Matsumoto, Isao; Takizawa, Masaya; Waseda, Ryuichi; Tanaka, Nobuyoshi; Shimada, Mari; Ishikawa, Norihiko; Watanabe, Go

2012-06-01

174

Career of the Month: An Interview with Cryptographer Bruce Schneier  

NSDL National Science Digital Library

For the general public, the field of cryptography has recently become famous as the method used to uncover secrets in Dan Brown's, "The Da Vinci Code." But the science of cryptography has been popular for centuries--secret hieroglyphics discovered in Egypt suggest that code-making dates back almost 4,000 years. In today's society, Cryptographers such as Bruce Schneier provide security systems for computers and networks. Students will be mesmerized as the secrets of this thrilling career are revealed.

Sullivan, Megan

2005-11-01

175

Robotic-assisted radical prostatectomy by a single surgeon in Taiwan: experience with the initial 30 cases  

Microsoft Academic Search

Robotic-assisted laparoscopic radical prostatectomy (RALP) is an established trend in surgical treatment for localized prostate\\u000a cancer in the USA; however, RALP is still in its infancy in Taiwan. We have tracked various indicators of proficiency as a\\u000a single Taiwanese surgeon became familiar with the procedure through experience with 30 initial RALP surgeries using the da\\u000a Vinci system between December 2005

Yen-Chuan Ou; Chi-Rei Yang; John Wang; Chen-Li Cheng; Vipul R. Patel

2008-01-01

176

Postural ergonomics during robotic and laparoscopic gastric bypass surgery: a pilot project  

Microsoft Academic Search

We hypothesized that a laparoscopic technique for Roux-en-Y gastric bypass surgery is associated with more musculoskeletal\\u000a discomfort and ergonomic strain than a robotic technique. This pilot project studied one surgeon while he performed four laparoscopic\\u000a and four robotic (da Vinci system) Roux-en-Y gastric bypass procedures. We measured musculoskeletal discomfort with body part\\u000a discomfort score (BPD) and ergonomic positioning with the

Elise H. Lawson; Myriam J. Curet; Barry R. Sanchez; Rob Schuster; Ramon Berguer

2007-01-01

177

Application of “cinch\\/tie” technique to robotic-assisted nephropexy for posterior abdominal wall fixation  

Microsoft Academic Search

Nephropexy remains standard for symptomatic nephroptosis, and several minimally-invasive techniques have been described. Triangulation\\u000a sutures placed between the abdominal wall and the renal capsule are often difficult to tie tightly due to the confined working\\u000a space. We propose a technique modification to fixate the kidney utilizing the da Vinci Surgical System robot and Lapra-Ty\\u000a absorbable suture clips. Four female patients

Scott M. Castle; Watid Karnjanawanichkul; Raymond J. Leveillee

178

Robot-assisted radical cystoprostatectomy in a small child with rhabdomyosarcoma: a case report  

Microsoft Academic Search

We report the first case of a robot-assisted radical cystoprostatectomy in a 22-month-old boy with embryonal rhabdomyosarcoma\\u000a in his urinary bladder. Treatment according to international protocol CWS-2002 P (Cooperative Weichteilsarkom Studie) was\\u000a given prior to surgery. The da Vinci S Surgical System from Intuitive Surgical (Sunnyvale, CA, USA) was used to laparoscopically\\u000a remove the urinary bladder and prostate radically. The

Magnus Anderberg; Torbjorn Backman; Magnus Annerstedt

2008-01-01

179

Web-connected surgery: using the internet for teaching and proctoring of live robotic surgeries  

Microsoft Academic Search

The purpose of this study was to assess the feasibility of using live teleconferencing for teaching of new robotic-assisted\\u000a surgical techniques. This was a prospective study with review of outcomes (Canadian Task Force classification II-3) in a community\\u000a hospital. In 2009, our community hospital acquired the da Vinci Connect™ System, a technology which allows for live surgeon-to-surgeon\\u000a interaction during robotic

John Lenihan Jr; Melissa Brower

180

Learning curve using robotic surgery  

Microsoft Academic Search

The da Vinci (Intuitive Surgical, Inc., Sunnyvale, CA) surgical system is being used by an increasing number of surgeons across\\u000a several surgical specialties. The robotic interface is different not only to open surgery, but also to laparoscopy because\\u000a it involves remote surgical control, stereoscopic vision, and lack of haptic feedback. As the transition is made from traditional\\u000a open to robotic

Sanjeev Kaul; Nikhil L. Shah; Mani Menon

2006-01-01

181

Port Placement in Robotic Urologic Surgery  

Microsoft Academic Search

\\u000a In 2001, the da Vinci Surgical System (Intuitive Surgical, Inc., Sunnyvale, CA) was approved for use in urology (www.fda.gov) and the technological improvements have translated to a paradigm shift, especially in the field of urologic oncology. Robotic-assisted\\u000a laparoscopic prostatectomy (RALP) has quickly become the minimally invasive surgical procedure of choice at most centers of\\u000a excellence and robotic-assisted laparoscopic radical and

Chad R. Ritch; Ketan K. Badani

182

Robot-assisted gynecological surgery in a community setting  

Microsoft Academic Search

The objective of this study is to review our experience using the da Vinci robotic system to perform various gynecological surgeries for benign indications. Between July 2005 and April 2008, 110 patients\\u000a underwent robot-assisted gynecological surgeries in Rochester General Hospital, NY. The records of these patients were retrospectively\\u000a reviewed by an independent data collector to analyze the safety, effectiveness, and

Johann M. Piquion-Joseph; Anju Nayar; Armine Ghazaryan; Ramesha Papanna; Waldemar Klimek; Rahul Laroia

2009-01-01

183

A novel method for training residents in robotic hysterectomy  

Microsoft Academic Search

Standard surgeon training for robotic hysterectomy currently includes the use of a porcine lab to gain experience using the\\u000a daVinci Surgical System. Residents in obstetrics\\/gynecology are taught using a novel dry lab which mimics the tasks specific\\u000a to a robotic hysterectomy. This technique may ultimately aid in the credentialing of gynecologic surgeons, obviating the need\\u000a for the porcine lab. A

Michael A. FinanMichael; Michael E. Clark; Rodney P. Rocconi

2010-01-01

184

Wrist-enhanced instrumentation: moving toward totally endoscopic coronary artery bypass grafting  

Microsoft Academic Search

Background. With the introduction of the da Vinci robotic surgical system (Intuitive Surgical, Mountain View, CA) into minimally invasive cardiac operations the outlook for performing coronary artery bypass operations “closed chest” became a reality.Methods. Between May 1999 and December 1999 this new wrist-enhanced instrumentation was used in 61 patients. Six patients suffering from single-vessel coronary artery disease and one female

Utz Kappert; Jens Schneider; Romuald Cichon; Vassilios Gulielmos; Klaus Matschke; Sems M Tugtekin; Stephan Schüler

2000-01-01

185

Total endoscopic robotic atrial septal defect repair in a patient with dextrocardia and situs inversus totalis.  

PubMed

Situs inversus with mirror-image of the heart is a rare condition. The present report describes a case of a patient with dextrocardia with situs inversus who had atrial septal defect with multiple holes in the fossa ovalis. The patient underwent total endoscopic atrial septal defect repair using the da Vinci surgical system. This procedure was achieved safely with good clinical and excellent cosmetic results. PMID:22200951

Iino, Kenji; Watanabe, Go; Ishikawa, Norihiko; Tomita, Shigeyuki

2011-12-26

186

Robotic-assisted surgery in children: advantages and limitations  

Microsoft Academic Search

The use of surgical robots in minimally invasive surgery was developed to overcome difficulties seen with conventional laparoscopic\\u000a surgery. I report my experience with pediatric robotic-assisted surgery and highlight its feasibility, safety, advantages,\\u000a and limitations. Children and infants included in this study underwent robotic-assisted laparoscopic procedures performed\\u000a by the author, using the original da Vinci surgical system, between July 2005 and

Abdulrahman Al-Bassam

2010-01-01

187

Robotic Instrumentation, Personnel and Operating Room Setup  

Microsoft Academic Search

\\u000a Robotic-assisted surgery using the da Vinci® Surgical System (Intuitive Surgical, Inc., Sunnyvale, CA) has rapidly expanded in the field of urologic surgery. Although\\u000a originally reported for use during radical prostatectomy, the last decade has witnessed expansion of its use in both the lower\\u000a and upper urinary tract. With the rapid growth and expansion of urologic robotic surgery comes the need

Ty T. Higuchi; Matthew T. Gettman

188

Closed chest totally endoscopic coronary artery bypass surgery: Fantasy or reality?  

Microsoft Academic Search

With the introduction of the da Vinci robotic surgical system (Intuitive Surgical, Mountain View, CA) into minimally invasive\\u000a cardiac surgery, the outlook of performing coronary artery bypass operations “closed chest” became a reality. Between May\\u000a 1999 and July 2000 this wrist-enhanced instrumentation was used in 143 patients (107 men, 36 women, median age 63 10.3 y).\\u000a Thirteen patients suffering from

Utz Kappert; Jens Schneider; Romuald Cichon; Vassilios Gulielmos; Ina Schade; Joachim Nicolai; Stephan Schueler

2000-01-01

189

The “halo effect” in Korea: change in practice patterns since the introduction of robot-assisted laparoscopic radical prostatectomy  

Microsoft Academic Search

Acquisition of the da Vinci surgical system (Intuitive Surgical, Mountain View, USA) has enabled robot-assisted surgery to\\u000a become an acceptable alternative to open radical prostatectomy (ORP). Implementation of robotics at a single institution in\\u000a Korea induced a gradual increase in the number of performances of robot-assisted laparoscopic radical prostatectomy (RALP)\\u000a to surgically treat localized prostate cancer. We analyzed the impact

Ee-Rah Sung; Wooju Jeong; Sung Yul Park; Won Sik Ham; Young Deuk Choi; Sung Joon Hong; Koon Ho Rha

2009-01-01

190

Robot-assisted excision of ectopic mediastinal parathyroid adenoma.  

PubMed

Robot-assisted excision of an ectopic parathyroid adenoma in the superior mediastinum was performed in a 57-year-old man. The mass was located by methoxyisobutylisonitrile scan and computed tomography. Identification of the ectopic parathyroid adenoma was facilitated by the 3-dimensional images of the da Vinci robotic system, and resection was achieved using EndoWrist instruments. Robot-assisted excision of parathyroid adenoma located in the relatively inaccessible superior mediastinum proved to be feasible. PMID:20124300

Chan, Alexander P H; Wan, Innes Y P; Wong, Randolph H L; Hsin, Michael K Y; Underwood, Malcolm J

2010-02-01

191

Protein 1 and Clara cell 10-kDa protein distribution in normal and neoplastic tissues with emphasis on the respiratory system  

Microsoft Academic Search

Thirty-six different normal tissues and 13 different malignant epithelial tumours, were examined immunohistochemically for the presence of protein 1 (P1) and Clara cell 10-kDa protein (CC10). Adenocarcinomas of the lung were also examined for the expression of pulmonary surfactant apoprotein using a monoclonal antibody (PE-10). The staining results of P1 and CC10 were almost identical both in normal tissues and

H. Nomori; S. Morinaga; R. Kobayashi; C. Torikata

1994-01-01

192

Robot-Assisted Transoral Odontoidectomy : Experiment in New Minimally Invasive Technology, a Cadaveric Study  

PubMed Central

Objective In the field of spinal surgery, a few laboratory results or clinical cases about robotic spinal surgery have been reported. In vivo trials and development of related surgical instruments for spinal surgery are required before its clinical application. We investigated the use of the da Vinci® Surgical System in spinal surgery at the craniovertebral junction in a human cadaver to demonstrate the efficacy and pitfalls of robotic surgery. Methods Dissection of pharyngeal wall to the exposure of C1 and odontoid process was performed with full robotic procedure. Although assistance of another surgeon was necessary for drilling and removal of odontoid process due to the lack of appropriate end-effectors, successful robotic procedures for dural sutures and exposing spinal cord proved its safety and dexterity. Results Robot-assisted odontoidectomy was successfully performed in a human cadaver using the da Vinci® Surgical System with few robotic arm collisions and minimal soft tissue damages. Da Vinci® Surgical System manifested more dexterous movement than human hands in the deep and narrow oral cavity. Furthermore, sutures with robotic procedure in the oral cavity demonstrated the advantage over conventional procedure. Conclusion Presenting cadaveric study proved the probability of robot-assisted transoral approach. However, the development of robotic instruments specific to spinal surgery must first precede its clinical application.

Yang, Moon Sul; Yoon, Tae Ho; Yoon, Do Heum; Kim, Keung Nyun; Pennant, William

2011-01-01

193

Comprehensive enzymatic analysis of the cellulolytic system in digestive fluid of the sea hare aplysia kurodai. efficient glucose release from sea lettuce by synergistic action of 45 kDa endoglucanase and 210 kDa ß-glucosidase.  

PubMed

Although many endo-ß-1,4-glucanases have been isolated in invertebrates, their cellulolytic systems are not fully understood. In particular, gastropod feeding on seaweed is considered an excellent model system for production of bioethanol and renewable bioenergy from third-generation feedstocks (microalgae and seaweeds). In this study, enzymes involved in the conversion of cellulose and other polysaccharides to glucose in digestive fluids of the sea hare (Aplysia kurodai) were screened and characterized to determine how the sea hare obtains glucose from sea lettuce (Ulva pertusa). Four endo-ß-1,4-glucanases (21K, 45K, 65K, and 95K cellulase) and 2 ß-glucosidases (110K and 210K) were purified to a homogeneous state, and the synergistic action of these enzymes during cellulose digestion was analyzed. All cellulases exhibited cellulase and lichenase activities and showed distinct cleavage specificities against cellooligosaccharides and filter paper. Filter paper was digested to cellobiose, cellotriose, and cellotetraose by 21K cellulase, whereas 45K and 65K enzymes hydrolyzed the filter paper to cellobiose and glucose. 210K ß-glucosidase showed unique substrate specificity against synthetic and natural substrates, and 4-methylumbelliferyl (4MU)-ß-glucoside, 4MU-ß-galactoside, cello-oligosaccharides, laminarin, and lichenan were suitable substrates. Furthermore, 210K ß-glucosidase possesses lactase activity. Although ß-glucosidase and cellulase are necessary for efficient hydrolysis of carboxymethylcellulose to glucose, laminarin is hydrolyzed to glucose only by 210K ß-glucosidase. Kinetic analysis of the inhibition of 210K ß-glucosidase by D-glucono-1,5-lactone suggested the presence of 2 active sites similar to those of mammalian lactase-phlorizin hydrolase. Saccharification of sea lettuce was considerably stimulated by the synergistic action of 45K cellulase and 210K ß-glucosidase. Our results indicate that 45K cellulase and 210K ß-glucosidase are the core components of the sea hare digestive system for efficient production of glucose from sea lettuce. These findings contribute important new insights into the development of biofuel processing biotechnologies from seaweed. PMID:23762366

Tsuji, Akihiko; Tominaga, Keiko; Nishiyama, Nami; Yuasa, Keizo

2013-06-06

194

Comprehensive Enzymatic Analysis of the Cellulolytic System in Digestive Fluid of the Sea Hare Aplysia kurodai. Efficient Glucose Release from Sea Lettuce by Synergistic Action of 45 kDa Endoglucanase and 210 kDa ss-Glucosidase  

PubMed Central

Although many endo-ß-1,4-glucanases have been isolated in invertebrates, their cellulolytic systems are not fully understood. In particular, gastropod feeding on seaweed is considered an excellent model system for production of bioethanol and renewable bioenergy from third-generation feedstocks (microalgae and seaweeds). In this study, enzymes involved in the conversion of cellulose and other polysaccharides to glucose in digestive fluids of the sea hare (Aplysia kurodai) were screened and characterized to determine how the sea hare obtains glucose from sea lettuce (Ulva pertusa). Four endo-ß-1,4-glucanases (21K, 45K, 65K, and 95K cellulase) and 2 ß-glucosidases (110K and 210K) were purified to a homogeneous state, and the synergistic action of these enzymes during cellulose digestion was analyzed. All cellulases exhibited cellulase and lichenase activities and showed distinct cleavage specificities against cellooligosaccharides and filter paper. Filter paper was digested to cellobiose, cellotriose, and cellotetraose by 21K cellulase, whereas 45K and 65K enzymes hydrolyzed the filter paper to cellobiose and glucose. 210K ß-glucosidase showed unique substrate specificity against synthetic and natural substrates, and 4-methylumbelliferyl (4MU)-ß-glucoside, 4MU–ß-galactoside, cello-oligosaccharides, laminarin, and lichenan were suitable substrates. Furthermore, 210K ß-glucosidase possesses lactase activity. Although ß-glucosidase and cellulase are necessary for efficient hydrolysis of carboxymethylcellulose to glucose, laminarin is hydrolyzed to glucose only by 210K ß-glucosidase. Kinetic analysis of the inhibition of 210K ß-glucosidase by D-glucono-1,5-lactone suggested the presence of 2 active sites similar to those of mammalian lactase-phlorizin hydrolase. Saccharification of sea lettuce was considerably stimulated by the synergistic action of 45K cellulase and 210K ß-glucosidase. Our results indicate that 45K cellulase and 210K ß-glucosidase are the core components of the sea hare digestive system for efficient production of glucose from sea lettuce. These findings contribute important new insights into the development of biofuel processing biotechnologies from seaweed.

Tsuji, Akihiko; Tominaga, Keiko; Nishiyama, Nami; Yuasa, Keizo

2013-01-01

195

Robotics in laparoscopic urology.  

PubMed

Following the successful application of the da Vinci robot in minimally invasive radical prostatectomy, several surgeries are now being performed with the assistance of the robot. These include both upper tract and lower tract surgeries such as nephrectomy, pyeloplasty and sacrocolpopexy and both ablative and reconstructive procedures. This article attempts to put into perspective the current role of the da Vinci Surgical system in urologic surgery and discusses in brief new developments in robotic technology that are on the horizon. A MEDLINE search was performed and published data on robot-assisted urologic procedures were reviewed. Abstracts presented at major international conferences in the last two years were also reviewed. Studies presenting operative and functional data for more than five patients were used in the review. There has been an explosive increase in the number of urologic procedures being attempted using Da Vinci assistance. Many, such as partial nephrectomy, donor nephrectomy, cystoprostatectomy, ureteral reimplantation and vasovasostomy are in the phase of feasibility studies, however others such as radical prostatectomy and pyeloplasty have one year functional results available which are comparable to those of other minimally invasive approaches. We believe that robotic technology represents the future of minimally invasive surgery and applications for the robot will expand as more centers report their results. PMID:16754619

Kaul, S; Menon, M

2005-01-01

196

PER LA BIBLIOTECA DI LEONARDO: «LIBRO DI GIORGIO VALLA»  

Microsoft Academic Search

L'annotazione «Libro di Giorgio Valla» nell'elenco del Codice Madrid II di Leonardo da Vinci è probabilmente da riferire a Georgio Valla interprete, Nicephori Logica etc., stampato a Venezia presso Simone Bevilacqua nel 1498.

Claudio Scarpati

2000-01-01

197

VINCI\\/VLTI Observations of Main Sequence Stars  

Microsoft Academic Search

The Main Sequence (MS) stars are by far the most numerous class in the Universe. They are often somewhat neglected as they are relatively quiet objects (but exceptions exist) though they bear testimony of the past and future of our Sun. An important characteristic of the MS stars particularly the solar-type ones is that they host the large majority of

P. Kervella; F. Thévenin; P. Morel; J. Provost; G. Berthomieu; D. Sé Gransan; D. Queloz; P. Bordé; E. di Folco; T. Forveille

2004-01-01

198

Fotopoética da Cidade  

Microsoft Academic Search

The research considers the imaginary nature of the Urban space through a reading of the aesthetic analysis of images of the photographic creation. Gaston Bachelard's Phenomenology of the creative Imagination and poetic Image brings the conceptual base of the study. Fotografia, Arte, Urbanismo, Bachelard, Imaginação. Apresentação Investigamos a natureza poética do fenômeno urbano, através da análise fenomenológica de imagens da

Carlos Alberto Murad

199

Observations on the effects of inhaled isoflurane in long-term sedation of critically Ill children using a modified AnaConDa©-system.  

PubMed

Long-term intravenous sedation may present problems due to dependence and side effects. Medical records of children who were administered isoflurane were reviewed. 15 patients (9 boys, 6 girls) with a mean age of 11.8 month (+2.4) were analysed.Analgesia and sedation was given in mean 9.7+1.1 days before commencing inhalation using a modified application device (AnaConDa©). Administration was given over a period of 7.2+1.4 days. Depth of sedation was monitored by using Comfort- and Hartwig-scores. Observations included continuous monitoring of heart-rate, pulse oxymetry, blood pressure and cerebral tissue oxygenation.Within 4 h post administration of isoflurane a satisfactory increase in the depth of sedation was seen and kept till extubation. 6/15 patients received tracheostomies during the observation period. None of the patients observed suffered life-critical events of the modified application of isoflurane proceeded without complications. Ketamine and clonidine infusion rates were significantly reduced (p<0.005) as well as the use and overall infusion rate of midazolam, ?-hydroxy butyrate, fentanyl and morphine (p<0.05).Isoflurane inhalation may provide an additional option for long-term sedation in a specific group of critically ill infants but neurodegenerative toxic effects will have to be taken into account when using volatile anesthetics at any time during infancy. PMID:23797368

Eifinger, F; Hünseler, C; Roth, B; Vierzig, A; Oberthuer, A; Mehler, K; Kribs, A; Menzel, C; Trieschmann, U

2013-06-24

200

JaDaCook 2: Cooking Over Ontological Knowledge  

Microsoft Academic Search

JaDaCook 2 has been developed to participate in the 2nd Computer Cooking Contest 2009 (CCC-09). The system is an improved version of JaDaCook 1.0 that participated in CCC-08. We have reengineered the source code making the code more reusable and extensible. JaDaCook 2 includes general improvements and new functionality. Namely, a new form based interface, a new version of the

P. Javier Herrera; Pablo Iglesias; García Sánchez; Belén Díaz-Agudo

2009-01-01

201

Leonardo's Codex Leicester  

NSDL National Science Digital Library

This Web site contains information from the American Museum of Natural History exhibition offering insight into the awe-inspiring mind of Leonardo da Vinci and examines the creativity of the scientific process. Although the exhibit is now closed, the site contains useful information on da Vinci's work including the Codex Leicester, a discussion of how scientific observation and research informed his paintings and drawings, a look at the scientific beliefs of his day and at Da Vinci's role as a leading anatomist, brilliant inventor, and phenomenally acute observer and a quick look at the experiments and phenomena illustrated in the Codex that were re-created as part of the exhibit.

202

MODEL HUBUNGAN PENDUDUK DAN KONVERSI LAHAN DENGAN KETERSEDIAAN AIR BERSIH UNTUK PERENCANAAN PENGELOLAAN SUMBER DA YA AIR MELALUI MET ODE SYSTEM DYNAMICS DI KABUP A TEN BEKASI  

Microsoft Academic Search

The objective of this research was to develop a system dynamics model that represents the relationship between population subsystem and land conversion subsystem with freshwater availability subsystem in Bekasi Regency . The models wer e used to pr edict the r elationship until 2025. The models were designed, both with and without intervention factors to population behavior towar d water

C. Hanny Wijaya

203

Sistema microcomputadorizado de sonda nuclear para avaliacao da funcao ventricular esquerda. (Microcomputerized system of nuclear probe for left ventricular function evaluation).  

National Technical Information Service (NTIS)

In this work, it is presented the development of a system, consisting in a nuclear probe and a 16 bits microcomputer, for left ventricular function (LVF) monitoring and analysis. Previously used in renal and thyroid studies, the nuclear probe, 2''x2''NaI(...

R. M. V. Piva

1987-01-01

204

INVESTIGAÇÕES EM SISTEMAS DE SERVIÇOS DE SAÚDE COMO FERRAMENTA PARA O ALCANCE DE PROGRAMAS DE CONTROLE DA HANSENÍASE MAIS EFETIVOS NO B RASIL* Health systems research training as a tool for more effective Hansen's disease control programmes in Brazil  

Microsoft Academic Search

RESUMO No Brasil, a hanseníase permanece como um importante problema de saúde pública. Embora um grande progresso tenha sido obtido nos Programas de Controle da Hanseníase (PCH), em todos os níveis do governo nos últimos 20 anos, algumas ações não foram potencializadas. O motivo: lacunas de informação relacionadas a áreas específicas da doença, exacerbadas pela ausência de instrumentos apropriados para

Alberto Novaes Ramos Jr; Jorg Heukelbach; Marcia Gomide; Pieter A. M. Schreuder

205

Recent Improvements in the ATLAS PanDA Pilot  

NASA Astrophysics Data System (ADS)

The Production and Distributed Analysis system (PanDA) in the ATLAS experiment uses pilots to execute submitted jobs on the worker nodes. The pilots are designed to deal with different runtime conditions and failure scenarios, and support many storage systems. This talk will give a brief overview of the PanDA pilot system and will present major features and recent improvements including CernVM File System integration, the job retry mechanism, advanced job monitoring including JEM technology, and validation of new pilot code using the HammerCloud stress-testing system. PanDA is used for all ATLAS distributed production and is the primary system for distributed analysis. It is currently used at over 130 sites worldwide. We analyze the performance of the pilot system in processing LHC data on the OSG, EGI and Nordugrid infrastructures used by ATLAS, and describe plans for its further evolution.

Nilsson, P.; Caballero Bejar, J.; Compostella, G.; Contreras, C.; De, K.; Dos Santos, T.; Maeno, T.; Potekhin, M.; Wenaus, T.

2012-12-01

206

Enhancing English Learning through Brainstorming  

Microsoft Academic Search

Creativity is a skill commonly associated with artists such as Leonardo da Vinci and Pablo Picasso, yet all of us possess the potential for being creative. We use our creative abilities every day to make decisions and solve problems.

Hall Houston

207

Leonardo's Tree Theory.  

ERIC Educational Resources Information Center

|Describes a series of activities exploring Leonardo da Vinci's tree theory that are designed to strengthen 8th grade students' data collection and problem solving skills in physical science classes. (KHR)|

Werner, Suzanne K.

2003-01-01

208

Evaluation of a novel single-port robotic platform in the cadaver model for the performance of various procedures in gynecologic oncology  

Microsoft Academic Search

ObjectivesThe purpose of this protocol was to evaluate the feasibility and reproducibility of a dedicated da Vinci® single-port robotic platform in cadavers for the performance of various gynecologic oncology procedures.

Pedro F. Escobar; Mehdi Kebria; Tommaso Falcone

2011-01-01

209

Thoracoscopic robot-assisted bronchoplasty  

Microsoft Academic Search

Background  In robotic surgery, the ideal position of the system, as well as the optimal working angles and the proper positioning of\\u000a the thoraco ports position is very important. No robot-assisted bronchoplasty has been reported. Our study describes use of\\u000a the da VinciTM surgical system (Intuitive Surgical, Inc.) for robotic sleeve upper lobectomy in a human fresh cadaver.\\u000a \\u000a \\u000a \\u000a Methods  A male cadaver

N. Ishikawa; Y. S. Sun; L. W. Nifong; W. R. Chitwood; M. Oda; Y. Ohta; G. Watanabe

2006-01-01

210

Influence of three-dimensional vision on surgical telemanipulator performance  

Microsoft Academic Search

  Background: Different viewing conditions (two- and three-dimensional National Television Standard Committee [2D-NTSC and 3D-NTSC]\\u000a and two-dimensional high-definition television [2D-HDTV]) on telemanipulator performance were evaluated. Methods: Six taskes\\u000a were performed by 15 endoscopic surgeons using the daVinci telemanipulation system. Performance time and errors were measured.\\u000a Encoder data from the system were used for kinematic analysis of motion. A self-evaluation questionnaire regarding

V. Falk; D. Mintz; J. Grunenfelder; J. I. Fann; T. A. Burdon

2001-01-01

211

CARACTERÍSTICAS, OPERACIONALIDADE E PRODUÇÃO DA FROTA SERREIRA NO MUNICÍPIO DA RAPOSA - MA  

Microsoft Academic Search

Este trabalho aborda as características, operacionalidade e produção pesqueira da frota serreira, no município da Raposa, no período de março a dezembro de 2003, com desembarques nos portos da Praia da Raposa e Braga. Os dados utilizados são provenientes da Capitania dos Portos do Maranhão, Progra- ma Revizee (Recursos Vivos da Zona Econômica exclusiva) e da comunidade de pescadores do

Elizabeth Galvão Soares; Milton Gonçalves da Silva Júnior

212

Robot-Assisted Laparoscopic Dismembered Pyeloplasty  

PubMed Central

Objective: Advanced laparoscopic skills limit the implementation of laparoscopic pyeloplasty to centers with extensive experience. The introduction of robotic technology into the field of minimally invasive surgery has facilitated complex surgical dissection and genitourinary reconstruction. We report our experience with robot-assisted laparoscopic pyeloplasty using the da Vinci Robotic Surgical System at 3 New York City medical centers. Methods: A review of all robot-assisted laparoscopic Anderson-Hynes dismembered pyeloplasty cases in 38 patients (21 females, 17 males) between April 2001 and January 2004 was performed. All patients had symptoms or radiographic evidence of ureteropelvic junction obstruction. Robotic assistance with the da Vinci Robotic Surgical System was used after preparation of the ureteropelvic junction with a standard laparoscopic approach. Results: The average patient age was 39.3 years (range, 15 to 69). The mean operative time and suturing time were 225.6±59.3 minutes and 64.2±14.6 minutes. The average estimated blood loss was minimal at 77.3±55.3 mL. The mean length of hospitalization was 69.6 hours (range, 28 to 310). The average use of intravenous morphine was 26.5 mg (range, 0 to 162). No intraoperative complications occurred, and open conversions were not necessary. A mean follow-up of 12.2 months revealed a success rate of 94.7% with 2/38 patients requiring further treatments. Conclusions: This combined multi-institutional series reveals that robot-assisted pyeloplasty with the da Vinci Surgical System is safe and reproducible. These intermediate results appear comparable to results with open and laparoscopic pyeloplasty repairs.

Munver, Ravi; Phillips, Courtney K.; Dinlenc, Caner; Stifelman, Michael; DelPizzo, Joseph J.

2005-01-01

213

Overview of ATLAS PanDA Workload Management  

SciTech Connect

The Production and Distributed Analysis System (PanDA) plays a key role in the ATLAS distributed computing infrastructure. All ATLAS Monte-Carlo simulation and data reprocessing jobs pass through the PanDA system. We will describe how PanDA manages job execution on the grid using dynamic resource estimation and data replication together with intelligent brokerage in order to meet the scaling and automation requirements of ATLAS distributed computing. PanDA is also the primary ATLAS system for processing user and group analysis jobs, bringing further requirements for quick, flexible adaptation to the rapidly evolving analysis use cases of the early datataking phase, in addition to the high reliability, robustness and usability needed to provide efficient and transparent utilization of the grid for analysis users. We will describe how PanDA meets ATLAS requirements, the evolution of the system in light of operational experience, how the system has performed during the first LHC data-taking phase and plans for the future.

Maeno T.; De K.; Wenaus T.; Nilsson P.; Stewart G. A.; Walker R.; Stradling A.; Caballero J.; Potekhin M.; Smith D.

2011-01-01

214

Minimized extracorporeal circulation for the robotic totally endoscopic coronary artery bypass grafting hybrid procedure  

PubMed Central

Robotically assisted totally endoscopic coronary artery bypass grafting (TECAB) can be performed on the beating heart with cardiopulmonary bypass support in high-risk patients or patients for whom technical difficulties are expected with a complete off-pump approach. To minimize the inflammatory response and reduce the requirement for transfusion, minimized extracorporeal circulation is an attractive option for robotic TECAB procedures. The present report describes a case for which minimized extra-corporeal circulation was used for the first time in TECAB performed using the da Vinci telemanipulation system.

Lehr, Eric J; Odonkor, Patrick; Reyes, Peter; Bonatti, Johannes

2010-01-01

215

[Pyeloplasty: pro laparoscopic].  

PubMed

With increasing experience and availability of the da Vinci® robotic surgery system there has been an extension of the indications from initially exclusively ablative interventions, such as nephrectomy and radical prostatectomy to reconstructive interventions, such as pyeloplasty, bladder augmentation and urinary diversion. Laparocopic pyeloplasty has been established for both adults and children, with results comparable to the open procedure. In comparison the conventional laparoscopic procedure is little cost-intensive and therefore widely used. The available literature has to be analysed to find advantages for the cost-intensive, robot-assisted laparoscopic pyeloplasty from which patients can profit. PMID:22526175

Bader, P

2012-05-01

216

Robotic-assisted laparoscopic surgery for recurrent diverticulitis: experience in consecutive cases and a review of the literature  

Microsoft Academic Search

Background  Robotic-assisted laparoscopic surgery has recently gained enthusiasm for application in colorectal surgery. We present the\\u000a safety and feasibility of using the da Vinci® robotic system for the surgical treatment of sigmoid diverticulitis.\\u000a \\u000a \\u000a \\u000a \\u000a Methods  Between August 2008 and November 2009, robotic-assisted laparoscopic anterior rectosigmoid resection (RALS-AR) for diverticulitis\\u000a was performed in 24 consecutive patients. Demographic data, intraoperative parameters, and postoperative outcomes were

Madhu Ragupathi; Diego I. Ramos-Valadez; Chirag B. Patel; Eric M. Haas

2011-01-01

217

Use of Robotics During Laparoscopic Gastric Bypass for Morbid Obesity  

PubMed Central

To evaluate the theoretical increased precision offered by utilization of the robotic instrument, we attempted to determine whether incorporation of its use into traditional laparoscopic gastric bypass would duplicate or improve the success of the operation without increasing complications. The Roux-en-Y gastric bypass is the most commonly performed procedure for morbid obesity in the United States. We performed 120 gastric bypass procedures with traditional laparoscopy during a 30-month period. We began introducing the da Vinci Robotic Surgical System into our laparoscopic gastric bypass procedure and evaluated its effectiveness.

Artuso, Dominick; Grossi, Robert

2005-01-01

218

[Applications of robotic surgery in pediatric urology. Description of the technical principles].  

PubMed

The incorporation of the robotic surgery to the pediatric urology permits less invasive and more precise therapeutic alternatives for the patient. It corrects some limitations of laparoscopic surgery, with its 3 dimensional vision, accurate movements without tremor, and more degrees of freedom, allows an ergonomic position to the surgeon and has a shorter learning curve. Different procedures were performed with da Vinci surgical system, in a secure and effective way, as pyeloplasty, total or partial nephrectomy, orchidopexy, intra or extravesical ureteral reimplant, enterocystoplasty, Mitrofanoff and others. These techniques and their outcomes will be reviewed, as well as some of the challenges still posed by this methodology. PMID:19323074

Pérez-Bertólez, S; Nguyen, H T; Passerotti, C C; Retik, A B

2009-01-01

219

The Mona Lisa effect: is 'our' Lisa fame or fake?  

PubMed

This demonstration uses one of the most famous human faces, the portrait of Mona Lisa, La Gioconda, by Leonardo da Vinci. Usually, we have a very accurate and stable representation of the exact configuration of such a familiar face. Typically, we are able to rapidly recognise even subtle configural changes. However, here we show that an exposure to specific alterations performed on a familiar face substantially reduces this ability even over a time period as long as 80 min. This demonstration illustrates the flexibility of the perceptual system and adaptation to new information. PMID:16619955

Carbon, Claus-Christian; Leder, Helmut

2006-01-01

220

Technique and follow-up of minimally invasive Heller myotomy for achalasia  

Microsoft Academic Search

Background  Laparoscopic Heller myotomy has been proven effective. Reliable predictive factors for outcome and the true benefit of the\\u000a da Vinci robotic system, however, remain unknown.\\u000a \\u000a \\u000a \\u000a Methods  Seventy patients underwent laparoscopic Heller myotomy. The number of intraoperative perforations and the symptom-predictive\\u000a value of postoperative esophagogram width measurement at the gastroesophageal junction were analyzed.\\u000a \\u000a \\u000a \\u000a Results  The overall complication rate was 11%. Four patients experienced

A. Iqbal; M. Haider; K. Desai; N. Garg; J. Kavan; S. Mittal; C. J. Filipi

2006-01-01

221

Robot-Assisted Pediatric Surgery: How Far Can We Go?  

Microsoft Academic Search

Background  The purpose of this study was to assess the safety and feasibility of performing robot-assisted pediatric surgery using the\\u000a da Vinci Surgical System in a variety of surgical procedures.\\u000a \\u000a \\u000a \\u000a \\u000a Methods  A retrospective review of 144 robot-assisted pediatric surgical procedures performed in our institution between June 2004\\u000a and December 2007 was done. The procedures included the following: 39 fundoplications; 34 cholecystectomies; 25

Aayed Alqahtani; Abdullrahman Albassam; Mohammed Zamakhshary; Mohammed Shoukri; Tariq Altokhais; Ayman Aljazairi; Abdullrhman Alzahim; Mohammed Mallik; Abdullah Alshehri

2010-01-01

222

Initial Experience with Robotic Sleeve Gastrectomy for Morbid Obesity  

Microsoft Academic Search

Background  Laparoscopic sleeve gastrectomy (LSG) is used with increasing frequency for the treatment of morbid obesity. The application\\u000a of robotic techniques has been reported for bariatric operations like laparoscopic Roux-en-Y gastric bypass and laparoscopic\\u000a adjustable gastric banding, but not for LSG. We report herein our initial experience with LSG performed with the use of the\\u000a Da Vinci surgical system.\\u000a \\u000a \\u000a \\u000a \\u000a Methods  Nineteen consecutive

Theodoros Diamantis; Andreas Alexandrou; Nikolaos Nikiteas; Athanasios Giannopoulos; Eustathios Papalambros

2011-01-01

223

Robot-assisted laparoscopic pancreatic surgery  

Microsoft Academic Search

Background  In the field of gastroenterological surgery, laparoscopic surgery has advanced remarkably, and now accounts for most gastrointestinal\\u000a operations. This paper outlines the current status of and future perspectives on robot-assisted laparoscopic pancreatectomy.\\u000a \\u000a \\u000a \\u000a \\u000a Methods  A review of the literature and authors’ experience was undertaken.\\u000a \\u000a \\u000a \\u000a Results  The da Vinci Surgical System is a robot for assisting laparoscopy and is safer than conventional endoscopes, thanks

Akihiko Horiguchi; Ichiro Uyama; Masahiro Ito; Shin Ishihara; Yukio Asano; Toshiyuki Yamamoto; Yoshinori Ishida; Shuichi Miyakawa

2011-01-01

224

[Robotic dissection of the right internal thoracic artery through median sternotomy].  

PubMed

The use of robotic systems in cardiac surgeries aims at decreasing the surgical trauma. The totally endoscopic myocardial revascularization, assisted by the DaVinci robot (Intuitive Surgical, Sunnyvale, California) is feasible and the learning process must be carried out in steps. The first step is the preparation of the left internal thoracic artery, through the totally endoscopic approach. The case presented here proposes the dissection of the right internal thoracic artery through complete sternotomy. It proposes a new step directed at the totally endoscopic procedure, aiming at decreasing the injuries caused by the learning curve. PMID:20625636

Jatene, Fabio Biscegli; Pêgo-Fernandes, Paulo Manuel; Anbar, Ramez; Gaiotto, Fábio Antonio; Barduco, Marcello S; Kalil Filho, Roberto

2010-06-01

225

Crescimento, dominância continuada e declínio da empresa: insights das histórias da General Electric e da Westinghouse  

Microsoft Academic Search

Este artigo compara as trajetórias de crescimento da General Electric e da Westinghouse por mais de doze décadas. Enquanto a General Electric desfrutou crescimento e existência continuados, a Westinghouse cresceu, mas também sofreu contração por três décadas e desapareceu após 110 anos de existência. A análise comparativa revelou que, afora as capacitações comparáveis no desenvolvimento de alta tecnologia, as duas

Denise L. Fleck

2004-01-01

226

Modeling and optimal design of an optical MEMS tactile sensor for use in robotically assisted surgery  

NASA Astrophysics Data System (ADS)

Currently, Minimally Invasive Surgery (MIS) performs through keyhole incisions using commercially available robotic surgery systems. One of the most famous examples of these robotic surgery systems is the da Vinci surgical system. In the current robotic surgery systems like the da Vinci, surgeons are faced with problems such as lack of tactile feedback during the surgery. Therefore, providing a real-time tactile feedback from interaction between surgical instruments and tissue can help the surgeons to perform MIS more reliably. The present paper proposes an optical tactile sensor to measure the contact force between the bio-tissue and the surgical instrument. A model is proposed for simulating the interaction between a flexible membrane and bio-tissue based on the finite element methods. The tissue is considered as a hyperelastic material with the material properties similar to the heart tissue. The flexible membrane is assumed as a thin layer of silicon which can be microfabricated using the technology of Micro Electro Mechanical Systems (MEMS). The simulation results are used to optimize the geometric design parameters of a proposed MEMS tactile sensor for use in robotic surgical systems to perform MIS.

Ahmadi, Roozbeh; Kalantari, Masoud; Packirisamy, Muthukumaran; Dargahi, Javad

2010-06-01

227

Augmented reality image guidance for minimally invasive coronary artery bypass  

NASA Astrophysics Data System (ADS)

We propose a novel system for image guidance in totally endoscopic coronary artery bypass (TECAB). A key requirement is the availability of 2D-3D registration techniques that can deal with non-rigid motion and deformation. Image guidance for TECAB is mainly required before the mechanical stabilization of the heart, thus the most dominant source of non-rigid deformation is the motion of the beating heart. To augment the images in the endoscope of the da Vinci robot, we have to find the transformation from the coordinate system of the preoperative imaging modality to the system of the endoscopic cameras. In a first step we build a 4D motion model of the beating heart. Intraoperatively we can use the ECG or video processing to determine the phase of the cardiac cycle. We can then take the heart surface from the motion model and register it to the stereo-endoscopic images of the da Vinci robot using 2D-3D registration methods. We are investigating robust feature tracking and intensity-based methods for this purpose. Images of the vessels available in the preoperative coordinate system can then be transformed to the camera system and projected into the calibrated endoscope view using two video mixers with chroma keying. It is hoped that the augmented view can improve the efficiency of TECAB surgery and reduce the conversion rate to more conventional procedures.

Figl, Michael; Rueckert, Daniel; Hawkes, David; Casula, Roberto; Hu, Mingxing; Pedro, Ose; Zhang, Dong Ping; Penney, Graeme; Bello, Fernando; Edwards, Philip

2008-04-01

228

A critical comparison of robotic versus conventional laparoscopic splenectomies.  

PubMed

The benefit of robotic systems for general surgery is a matter of debate. We compare our initial series of robotic splenectomies with our first series of conventional laparoscopic ones. A retrospective analysis of the first six robotic versus the first six conventional laparoscopic splenectomies is presented. Patients were matched with regard to age, body-mass index, ASA score, and preoperative platelet levels. All procedures were performed by a single surgeon. Size and weight of the resected specimens were comparable in both groups. Median overall operating time was 154 (range, 115-292) min for the robotic and 127 (range, 95-174) min for the laparoscopic group. No complications occurred. There were no open conversions. The median postoperative hospital stay was 7 (robotic group) and 6 (laparoscopic group) days. Median average costs were 6927 dollars for the robotic procedure versus $4084 for the conventional laparoscopic procedure (p < 0.05). Minimally invasive splenectomies are feasible using either conventional laparoscopic techniques or the da Vinci robotic system. In this analysis, procedures performed with the da Vinci robotic system resulted in prolonged overall operative time and significantly higher procedural costs. The use of a robotic system for laparoscopic splenectomy offers, at this stage, no relevant benefit and thus is not justified. PMID:15981042

Bodner, Johannes; Kafka-Ritsch, Reinhold; Lucciarini, Paolo; Fish, John H; Schmid, Thomas

2005-08-01

229

Early Radar Observations of Asteroid 2012 DA14  

NASA Video Gallery

This 73-frame movie of asteroid 2012 DA14 was generated from data obtained by NASA's Goldstone Solar System Radar on the night of Feb. 15 to 16, 2013. The observations were made as the asteroid was moving away from Earth. Image credit: NASA/JPL-Caltech › Asteroid and Comet Watch site

Anthony Greicius

2013-02-19

230

DATA ASSESSMENT REPORTS FOR CEMS AT SUBPART DA FACILITIES  

EPA Science Inventory

EPA promulgated minimum quality assurance (QA) requirements for Continuous Emission Monitoring Systems (CEMS) in 40 CFR Part 60 Appendix F. Appendix F requires Da source owners to develop site-specific QA plans and report the results of EPA specified QA activities each calendar q...

231

Robotic-assisted transoral removal of a bilateral floor of mouth ranulas  

PubMed Central

Objective To describe the management of bilateral oral ranulas with the use of the da Vinci Si Surgical System and discuss advantages and disadvantages over traditional transoral resection. Study Design Case Report and Review of Literature. Results A 47 year old woman presented to our service with an obvious right floor of mouth swelling. Clinical evaluation and computerized tomography scan confirmed a large floor of mouth ranula on the right and an incidental asymptomatic early ranula of the left sublingual gland. After obtaining an informed consent, the patient underwent a right transoral robotic-assisted transoral excision of the ranula and sublingual gland with identification and dissection of the submandibular duct and lingual nerve. The patient had an excellent outcome with no evidence of lingual nerve paresis and a return to oral intake on the first postoperative day. Subsequently, the patient underwent an elective transoral robotic-assisted excision of the incidental ranula on the left sublingual gland. Conclusion We describe the first robotic-assisted excision of bilateral oral ranulas in current literature. The use of the da Vinci system provides excellent visualization, magnification, and dexterity for transoral surgical management of ranulas with preservation of the lingual nerve and Wharton's duct with good functional outcomes. However, the use of the robotic system for anterior floor of mouth surgery in terms of improved surgical outcomes as compared to traditional transoral surgery, long-term recurrence rates, and cost effectiveness needs further validation.

2011-01-01

232

[Robot-assisted laparoscopy in urology. Radical prostatectomy and reconstructive retroperitoneal interventions].  

PubMed

Complex reconstructive laparoscopic procedures in the field of urology such as radical prostatectomy and pyeloplasty have attracted increased attention in the past 2 years. However, extensive laparoscopic experience is required to master these procedures. Therefore, it remains questionable whether these techniques, which have been shown to be of profit to the patient in the hands of a specialist, will achieve widespread distribution. We have employed computer technology to bridge the gap between open surgery and laparoscopic access and used the daVinci Surgical System to establish laparoscopic radical prostatectomy as well as pyeloplasty and other retroperitoneal procedures at our institution. With experience of more than 70 procedures, we find that with the assistance of the daVinci Surgical System both radical prostatectomy and retroperiteoneal procedures can be easily translated from open to minimally invasive procedures with a considerably shorter learning curve and without compromising patient safety. We expect that large incisions will be soon a thing of the past in urologic surgery. Computer technology, together with mechanical engineering, will play a major role in enabling us to achieve better results despite minimal invasiveness. PMID:11993092

Binder, J; Jones, J; Bentas, W; Wolfram, M; Bräutigam, R; Probst, M; Kramer, W; Jonas, D

2002-03-01

233

Robot assisted radical prostatectomy: how I do it. Part I: patient preparation and positioning.  

PubMed

Radical prostatectomy remains the standard treatment for long term cure of clinically localized prostate cancer, offering excellent oncologic outcomes, with cancer-specific survival approaching 95% at 15 years after surgery. The introduction of the "da Vinci Robotic Surgical System" (Intuitive Surgical, Sunnyvale, CA, USA) has been another important step toward a minimally invasive approach to radical prostatectomy. Technologic peculiarities, such as three-dimensional vision, wristed instrumentation with seven degrees of freedom of motion, lack of tremor, a 10x-magnification and a comfortable seated position for the surgeon has added value to the surgeon and patient. In this first part of a two article series, we describe preoperative patient preparation and positioning protocols for robot assisted radical prostatectomy (RARP) that are currently used in our institution (University of Montreal Hospital Center (CHUM) - Hopital St-Luc). We use the four-arm da Vinci Si Surgical System. Our experience with RARP is now over 250 cases with the senior surgeon having performed over 1200 RARPs and we have continually refined our technique to improve patient outcomes. PMID:24128839

Valdivieso, Roger F; Hueber, Pierre-Alain; Zorn, Kevin C

2013-10-01

234

Robotic ocular surgery  

PubMed Central

Background Bimanual, three?dimensional robotic surgery has proved valuable for a variety of surgical procedures. Aims To examine the use of a commercially available surgical robot for ocular microsurgery. Methods Using a da Vinci surgical robot, ocular microsurgery was performed with repair of a corneal laceration in a porcine model. The experiments were performed on harvested porcine eyes placed in an anatomical position using a foam head on a standard operating room table. A video scope and two, 360°?rotating, 8?mm, wrested?end effector instruments were placed over the eye with three robotic arms. The surgeon performed the actual procedures while positioned at a robotic system console that was located across the operating room suite. Each surgeon placed three 10?0 sutures, and this was documented with still and video photography. Results Ocular microsurgery was successfully performed using the da Vinci surgical robot. The robotic system provided excellent visualisation, as well as controlled and delicate placement of the sutures at the corneal level. Conclusions Robotic ocular microsurgery is technically feasible in the porcine model and warrants consideration for evaluation in controlled human trials to deploy functioning remote surgical centres in areas without access to state?of?the?art surgical skill and technology.

Tsirbas, A; Mango, C; Dutson, E

2007-01-01

235

DaTSCAN (ioflupane I-123) injection  

Center for Biologics Evaluation and Research (CBER)

Text Version... DaTSCAN visualized abnormal DaT distribution • In 78% of patients with probable DLB ... reduced facial expression ... General practitioner (4) ... More results from www.fda.gov/downloads/advisorycommittees/committeesmeetingmaterials

236

Desenvolvimento de um sistema de coincidencia para a medida absoluta da atividade de radionuclideos empregando detectores de barreira de superficie. (Development of a coincidence system for radio-nuclide standardization using surface barrier detectors).  

National Technical Information Service (NTIS)

A system for the standardization of alpha-gamma or electron-X radionuclide emitters has been developed in the present work. The system consists of one or two surface barrier detectors for alpha or electron detection which are coupled to thin-window NaI (T...

M. F. Koskinas

1988-01-01

237

ESTUDO DA VIABILIDADE DE M…TODOS GEOESTAT?STICOS NA MENSURA?ˆO DA VARIABILIDADE ESPACIAL DA DUREZA DA MADEIRA DE P ARAJU (Manilkara sp)1  

Microsoft Academic Search

RESUMO ñ Este trabalho objetivou determinar a viabilidade do uso da metodologia geoestatÌstica na prediÁªo do padrªo espacial da dureza, como propriedade mec‚nica da madeira de paraju (Manilkara sp). A peÁa de madeira apresentou as dimensies de 25,0 x 7,0 x 75,0 cm, correspondente a largura, espessura e comprimento, respectivamente. As duas faces da peÁa foram divididas em malhas regulares

Soares de Souza Lima; Tarcisio Oliveira da Silva; Rone Batista de Oliveira

238

Efeitos da simpaticotomia endoscópica sobre as artérias carótidas e vertebrais na terapêutica cirúrgica da hiperidrose primária  

Microsoft Academic Search

RESUMO - Objetivos: Analisar, em pacientes submetidos a simpaticotomia videotoracoscópica para tratamento da Hiperidrose Primária (HP), as conseqüências hemodinâmicas da desnervação vascular das artérias carótidas e vertebrais após a trans-secção cirúrgica da cadeia simpática torácica (simpaticotomia), através da mensuração de parâmetros ultra-sonográficos. Método: Vinte e quatro pacientes portadores de HP submetidos a quarenta e oito simpaticotomias torácicas endoscópicas foram avaliados

Jeancarlo F. Cavalcante; Carlos Alberto Almeida Araújo; Manoel Ximenes Netto; Francisco Edênio R. da Costa; Francisco de Freitas Diniz Filho; Aldo da Cunha Medeiros

2005-01-01

239

Excitation of type II caudate neurons by systemic administration of dopamine agonists  

Microsoft Academic Search

Using chloral hydrate anesthetized rats, dopamine (DA) agonists were evaluated for their systemic effects on firing rates of DA neurons in rat substantia nigra pars compacta (SNPC) and postsynaptic type 11 neurons in the anterior caudate nucleus (CN), the major projection area for SNPC DA neurons. Intravenous injections of the indirect DA agonistd-amphetamine, but notl-amphetamine, excited spontaneously active CN neurons

Montford F. Piercey; Deborah K. Hyslop; William E. Hoffmann

1996-01-01

240

OpenDA: Open Source Generic Data Assimilation Environment and its Application in Geophysical Process Models  

NASA Astrophysics Data System (ADS)

Data Assimilation techniques are essential elements in state-of-the-art development of models and their use in operational forecasting and real-time control in the fields of groundwater, surface water and soil systems. In meteorological and atmospheric sciences, steady improvements in numerical weather forecasting and climate prediction over the last couple of decades have been enabled to a large degree by the development of community-based models and data assimilation systems. The hydrologic community should learn from the experiences of the meteorological and atmospheric communities by accelerating the transition of hydrologic DA research into operations and developing community-supported, open-source modeling and forecasting systems and data assimilation tools. In 2010, a community based open source initiative named OpenDA was started. The openDA initiative bears similarities with the well-known openMI initiative. OpenDA makes use of a set of interfaces that describe the interaction between models, observations and data assimilation algorithms. It focuses on flexible applications in portable systems for modeling geophysical processes. It provides a generic interfacing protocol that allows combination of the implemented data assimilation techniques with, in principle, any time-stepping model describing a process (atmospheric processes, 3D circulation, 2D water flow, rainfall-runoff, unsaturated flow, groundwater flow, etc.). Presently, openDA features filtering techniques and calibration techniques. The presentation will give an overview of openDA and the results of some of its practical applications.

Weerts, A.; van Velzen, N.; Verlaan, M.; Sumihar, J.; Hummel, S.; El Serafy, G.; Dhondia, J.; Gerritsen, H.; Vermeer-Ooms, S.; Loots, E.; Markus, A.; Kockx, A.

2011-12-01

241

Estudo sobre as multiplas solucoes da equacao de Hartree-Fock-Roothaan para sistemas de camada fechada. (Study on the multiple solutions of the Martree-Fock-Roothaan equation for closed shell systems).  

National Technical Information Service (NTIS)

An analysis of the multiple solutions of the Hartree-Fock-Roothaan equation for closed shell systems is done. The meaning of these solutions is discussed as self-consistent solutions of the pseudo-eingen-value equation and a general method for obtaining t...

L. A. C. Malbouisson

1985-01-01

242

The Evolution of Dopamine Systems in Chordates  

PubMed Central

Dopamine (DA) neurotransmission in the central nervous system (CNS) is found throughout chordates, and its emergence predates the divergence of chordates. Many of the molecular components of DA systems, such as biosynthetic enzymes, transporters, and receptors, are shared with those of other monoamine systems, suggesting the common origin of these systems. In the mammalian CNS, the DA neurotransmitter systems are diversified and serve for visual and olfactory perception, sensory–motor programming, motivation, memory, emotion, and endocrine regulations. Some of the functions are conserved among different vertebrate groups, while others are not, and this is reflected in the anatomical aspects of DA systems in the forebrain and midbrain. Recent findings concerning a second tyrosine hydroxylase gene (TH2) revealed new populations of DA-synthesizing cells, as evidenced in the periventricular hypothalamic zones of teleost fish. It is likely that the ancestor of vertebrates possessed TH2 DA-synthesizing cells, and the TH2 gene has been lost secondarily in placental mammals. All the vertebrates possess DA cells in the olfactory bulb, retina, and in the diencephalon. Midbrain DA cells are abundant in amniotes while absent in some groups, e.g., teleosts. Studies of protochordate DA cells suggest that the diencephalic DA cells were present before the divergence of the chordate lineage. In contrast, the midbrain cell populations have probably emerged in the vertebrate lineage following the development of the midbrain–hindbrain boundary. The functional flexibility of the DA systems, and the evolvability provided by duplication of the corresponding genes permitted a large diversification of these systems. These features were instrumental in the adaptation of brain functions to the very variable way of life of vertebrates.

Yamamoto, Kei; Vernier, Philippe

2011-01-01

243

Image analysis of the observations of the DA240 region with the Miyun radio telescope  

Microsoft Academic Search

In this paper, observations of sky region DA240 with the Miyun Metre-wave Synthesis Radiotelescope (MSRT) at 232 MHz are analysed, using a new method of image processing developed by Wei. Several maps of good quality of the radio source DA240 and its surrounding region are obtained. A number of common problems encountered in metre-wave synthesis systems are solved as follows.

Ming-Zhi Wei; Shan-Jie Qian

1988-01-01

244

Modifiable factors to decrease the cost of robotic-assisted procedures.  

PubMed

In 2000, the US Food and Drug Administration approved the da Vinci Surgical System® for use in the United States. Since that time, the number of surgical robotic systems throughout the United States has continued to grow. The costs for using the system include the initial purchase ($1 million to $2.3 million) plus annual maintenance fees ($100,000 to $150,000) and the cost of limited-use or disposable instruments. Increasing the number of procedures that are performed using the robotic system can decrease the per-procedure costs. Two modifiable factors that contribute to increasing the annual caseload are increasing the number of surgeons capable of using the system and having a properly educated perioperative nursing team. An educated surgical team decreases turnover time, facilitates proper flow of each surgical procedure, and is able to actively and passively solve intraoperative problems. PMID:24075331

Nayeemuddin, Mohammed; Daley, Susan C; Ellsworth, Pamela

2013-10-01

245

Fluorine substitution enhanced photovoltaic performance of a D-A1-D-A2 copolymer.  

PubMed

A new alternating donor-acceptor (D-A1-D-A2) copolymer containing two electron-deficient moieties, isoindigo and quinoxaline, was synthesized. The photovoltaic performance of this polymer could be improved by incorporating fluorine atoms into the quinoxaline units, resulting in an efficiency of 6.32%. This result highlights the attractive promise of D-A1-D-A2 copolymers for high-performance bulk heterojunction solar cells. PMID:24000353

Dang, Dongfeng; Chen, Weichao; Yang, Renqiang; Zhu, Weiguo; Mammo, Wendimagegn; Wang, Ergang

2013-09-17

246

Monoclonal antibodies to a rat nestin fusion protein recognize a 220-kDa polypeptide in subsets of fetal and adult human central nervous system neurons and in primitive neuroectodermal tumor cells.  

PubMed Central

Nestin is the major intermediate filament protein of embryonic central nervous system (CNS) progenitor cells. To identify proteins involved in early stages of lineage commitment in the developing human CNS we generated monoclonal antibodies to a TrpE-rat nestin fusion protein. This resulted in a monoclonal antibody (designated NST11) that did not recognize authentic human nestin, but did recognize a novel neuron-specific human polypeptide expressed in a subset of embryonic and adult CNS neurons as well as in medulloblastomas. NST11 immunoreactivity was abundant in developing spinal cord motor neurons, but was extinguished in these neurons by 17 weeks gestation. NST11 also labeled Purkinje cells at 17 weeks gestation, but Purkinje cells continued to express the NST11 antigen throughout gestation as well as in the adult cerebellum, and NST11 immunoreactivity was more abundant in Purkinje cells than in any other human CNS neurons. No NST11 immunoreactivity was detected in cells of the adult human peripheral nervous system or in a variety of adult non-neural human tissues. Further, NST11 almost exclusively stained cerebellar medulloblastomas. In Western blots of immature and mature human cerebral and cerebellar extracts, NST11 did not bind human nestin, but did detect an immunoband with a molecular weight of 220 kd. A similar immunoband was detected in medulloblastoma-derived cell lines with a neuron-like phenotype. These findings suggest that the NST11 monoclonal antibody recognizes a novel protein expressed by a subpopulation of immature and mature human CNS neurons, medulloblastomas, and medulloblastoma-derived cell lines. Images Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Tohyama, T.; Lee, V. M.; Rorke, L. B.; Marvin, M.; McKay, R. D.; Trojanowski, J. Q.

1993-01-01

247

The D'oh Vinci Code: deciphering and balancing the postmodern curriculum  

Microsoft Academic Search

Responding to the death throes of the old curriculum and the need to create critically aware young people who can engage with the culture that consumes them, educationists have deployed twenty-first century aid. They’ve loaded up the traditional canon with popular fodder and fired it into classrooms, exciting many students about learning in ways that they haven’t been for a

Karen Ruth Brooks; Bruce Williams

2007-01-01

248

MÚSICA NA BASE DA ESTRUTURA SOCIAL DA BAHIA URBANA DO SÉCULO XIX: NOTAS DE CONTEXTUALIZAÇÃO  

Microsoft Academic Search

RESUMO: Este trabalho discute a música feita pelas classes menos abastadas da Bahia do século XIX, contextualizando as práticas musicais, através da análise comparativa de informações advindas de fontes bibliográficas diversas: literatura de viajantes, abordagens histórico-analíticas do contexto urbano, análises sociais, histórias da música, notícias de jornais, coleções de cantigas, modinhas e lundus, crônicas de época ou de reconstrução de

Luciano Carôso; Pablo Sotuyo Blanco

249

Efetividade da reabilitação pulmonar como tratamento coadjuvante da doença pulmonar obstrutiva crônica  

Microsoft Academic Search

3 Introdução: O paciente portador de DPOC diminui sua atividade física global devido a piora progressiva da função pulmonar como conseqüência de qualquer forma de esforço físico por ele realizado. A reabilitação pulmonar (RP) é utilizada nos EUA e Europa como alternativa terapêutica no tratamento da DPOC. Objetivo: Avaliar a efetividade do programa de RP como tratamento coadjuvante da DPOC.

SÉRGIO LEITE RODRIGUES; CARLOS ALBERTO DE ASSIS VIEGAS; TEREZINHA LIMA

2002-01-01

250

A PAIXÃO PELO BELO: A BUSCA DA FONTE DA ETERNA JUVENTUDE  

Microsoft Academic Search

RESUMO: O presente artigo tem por objetivo principal analisar a manifestação patêmica do sujeito apaixonado pelo belo, e em busca da fonte da eterna juventude, presente no texto publicitário do creme Prevage, recém-lançado no Brasil pela empresa de cosméticos Elizabeth Arden. Será utilizado o referencial teórico apresentado pela semiótica francesa, principalmente os estudos acerca da semiótica das paixões. A modalização

Juliana Spirlandeli BATISTA

251

Does robotic assistance improve efficiency in performing complex minimally invasive surgical procedures?  

Microsoft Academic Search

Objective  We used a model of biliary-enteric anastomosis to test whether da Vinci robotics improves performance on a complex minimally\\u000a invasive surgical (MIS) procedure.\\u000a \\u000a \\u000a \\u000a Methods  An ex vivo model for choledochojejunostomy was created using porcine livers with extrahepatic bile ducts and contiguous intestines.\\u000a MIS choledochojejunostomies were performed in two arms: group 1 (laparoscopic, n = 30) and group 2 (da Vinci assisted, n = 30). Procedures

Shiva Jayaraman; Douglas Quan; Ibrahim Al-Ghamdi; Firas El-Deen; Christopher M. Schlachta

2010-01-01

252

RESSIGNIFICAÇÃO DO PAPEL DA ESCOLA ESPECIAL E DO PROFESSOR ESPECIALISTA ITINERANTE FRENTE À INCLUSÃO EDUCACIONAL DA CRIANÇA COM DEFICIÊNCIA INTELECTUAL  

Microsoft Academic Search

RESUMO - Este estudo objetiva repensar a ressignificação do papel da escola especial, frente ao desafio da inclusão educacional de alunos com deficiência intelectual, bem como a relevância da atuação do professor especialista itinerante neste processo. O texto é fundamentado nas experiências da autora como professora regente de sete alunos da Escola Especial de Educação Estimulação e Desenvolvimento - CEDAE

Nádia Aparecida Poleto

253

In vitro degradation of the 32kDa PS II reaction centre protein  

SciTech Connect

The 32kDa thylakoid membrane protein is an integral component of the PS II reaction centre. The protein, although stable in the dark, undergoes light dependent turnover. Light from the UV, visible and far-red spectral regions induce 32kDa protein degradation. To better understand 32kDa protein metabolism, an in vitro degradation system is being developed. It consists of isolated thylakoid membranes than contain radiolabelled protein. The 32kDa protein is actively and specifically degraded when the thylakoid preparation is exposed to UV or visible radiation. The protein is stable in the dark. The herbicides (atrazine and DCMU) inhibit degradation in the in vitro system as they do in vivo. Additionally, several methods of isolating thylakoids are being compared to optimize the 32kDa protein degradation reaction. The preparations will be evaluated based on their ability to permit light dependent degradation of the 32kDa protein without affecting the other membrane components.

Eckenswiller, L.C.; Greenberg, B.M. (Univ. of Waterloo, Ontario (Canada))

1989-04-01

254

Initial Experience with Robotic-Assisted Laparoscopic Partial Cystectomy in Urachal Diseases  

PubMed Central

Purpose In this study, we report our initial experience with robot-assisted laparoscopic partial cystectomy (RLPC) in urachal diseases. Materials and Methods Two men and two women with a mean age of 51.5±9.3 years underwent RLPC between June 2009 and December 2009. In each case, a single surgeon using the da Vinci-S robotic system (Intuitive Surgical, Sunnyvale, CA, USA) used a transperitoneal approach with a 0° robotic camera. After careful observation of the intravesical portion of the mass, the mass was excised by use of monopolar scissors circumferentially. The bladder was closed in two layers with watertight running sutures made with 2-0 Vicryl. Results The mean operative time was 198 minutes (range, 130-260 minutes), the mean console time was 111 minutes (range, 70-150 minutes), and the mean estimated blood loss was 155 ml. The urethral catheter was removed on postoperative day 7 after a normal cystogram, and the surgical drain was removed on postoperative day 2.5 (range, 2-3 days). The mean hospital stay was 6 days (range, 4-7 days). There were no major complications. The pathology report revealed that one patient had a urachal cystadenoma, two patients had a urachal cyst, and one patient had a patent urachus. Conclusions Our initial experience with RLPC for benign urachal disease is that it is a safe and feasible treatment modality. However, more cases are required to confirm the efficacy of RLPC.

Kim, Dae Keun; Lee, Jae Won; Park, Sung Yul; Kim, Yong Tae; Park, Hae Young

2010-01-01

255

Therapeutic effect of infused Fluosol-DA/carbogen with ephedrine, flunarizine, or nitroprusside  

SciTech Connect

The perfluorochemical emulsion Fluosol-DA plus carbogen breathing has been shown to increase the effectiveness of radiation therapy in preclinical solid tumors when the emulsion was administered by i.v. bolus injection. Much of the enhancement in tumor radiation response was lost when the emulsion was administered slowly. The authors hypothesized that an increase in tumor perfusion resulted when Fluosol-DA was administered rapidly. In the present study, the [alpha]/[beta] agonist ephedrine, the Ca[sup 2+] channel blocker flunarizine and the nitric oxide producing vasodilating drug nitroprusside have been tested. Ephedrine administration resulted in a decrease in the radiation plus Fluosol-DA [+-] carbogen antitumor effects in both the Lewis lung carcinoma and FSaIIC tumor systems. In contrast, flunarizine administration resulted in an increase in the efficacy of the radiation plus carbogen and the radiation plus Fluosol-DA/carbogen in both emulsion was given rapidly. Even with flunarizine administration Fluosol-DA delivered slowly was less effective than when the emulsion was given rapidly. Flunarizine with Fluosol-DA infused i.v. over 30 min followed by carbogen breathing prior to and during radiation therapy resulted in a 1.7-1.6-fold increase in response compared with 2.4-2.2-fold with Fluosol-DA administered by injection i.v. and carbogen breathing prior to and during radiation therapy using growth delay of the Lewis lung carcinoma. The effects of nitroprusside were complex. This drug had considerably more effect at 10 Gy than at higher radiation doses. These studies suggest that Fluosol-DA given by i.v. injection may increase tumor perfusion and that a drug like flunarizine may be beneficial if the Fluosol-DA is administered slowly followed by carbogen breathing and radiation therapy. 45 refs., 4 figs.

Teicher, B.A.; Holden, S.A.; Northey, D.; Dewhirst, M.W.; Herman, T.S.

1993-04-30

256

Cortical regulation of subcortical dopamine systems and its possible relevance to schizophrenia  

Microsoft Academic Search

Summary A unique model of DA system regulation is presented, in which tonic steady-state DA levels in the ECF act to down-regulate the response of the system to pulsatile DA released by DA cell action potential generation. This type of regulation is similar in many respects to the phenomenon proposed to mediate the action of norepinephrine on target neurons; i.e.,

A. A. Grace

1993-01-01

257

Stroemgren photometry of ZZ Ceti and other DA white dwarfs  

SciTech Connect

Stroemgren colors for a sample of 71 stars classified as DA white dwarfs are presented. Comparison with the recent model atmospheres of the Kiel group indicates that the average gravity of 63 stars of the sample is log g = 7.98 +- 0.31, with no indication of a dependence on the effective temperature. This is consistent with the theoretical expectation that white dwarfs evolve at constant gravity. Correlations between Stroemgren colors and Greenstein multichannel colors are also given, using 52 stars that have been observed in common in the two systems. These correlations are used to compare the data with a second set of model atmospheres computed by Shipman. Contrary to what has been suggested in the past, no fundamental differences are found when confronting the Stroemgren data with the DA model atmospheres of Shipman or those of the Kiel group. Finally, observations of 11 pulsating objects reveal the existence of a narrow instability strip in the range 13 000 K> or approx. =T/sub e/> or approx. =11 000 K in a ((u-b), (b-y)) two-color diagram. The present results add evidence to the contention that all DA white dwarfs evolve to become ZZ Ceti pulsators in the instability strip.

Fontaine, G.; Bergeron, P.; Lacombe, P.; Lamontagne, R.; Talon, A.

1985-06-01

258

The potentially dangerous asteroid 2012 DA14  

NASA Astrophysics Data System (ADS)

We present computing methods that allow us to study the behaviour of the dynamically interesting potentially dangerous asteroid 2012 DA14. Using the freely available ORBFIT software, we can follow the orbit of the asteroid backward and forward in the future, searching for close approaches to the Earth that might lead to possible impacts. The possible impact orbit for 2026 is computed. We show that it should be possible to recover asteroid 2012 DA14, mainly in 2013 February. It is highly unlikely that asteroid 2012 DA14 will hit any geosynchronous satellites during its close approach on 2013 February 15.

Wlodarczyk, I.

2012-12-01

259

Image guidance for robotic minimally invasive coronary artery bypass.  

PubMed

A novel system for image guidance in totally endoscopic coronary artery bypass (TECAB) is presented. Key requirement is the availability of 2D-3D registration techniques that can deal with non-rigid motion and deformation. Image guidance for TECAB is mainly required before the mechanical stabilisation of the heart, when the most dominant source of misregistration is the deformation and non-rigid motion of the heart. To augment the images in the endoscope of the da Vinci robot, we have to find the transformation from the coordinate system of the preoperative imaging modality to the system of the endoscopic cameras. In a first step we build a 4D motion model of the beating heart. Intraoperatively we can use the ECG or video processing to determine the phase of the cardiac cycle, as well as the heart and respiratory frequencies. We then take the heart surface from the motion model and register it to the stereo endoscopic images of the da Vinci robot resp. of a validation system using photo-consistency. To take advantage of the fact that there is a whole image sequence available for registration, we use the different phases together to get the registration. We found the similarity function to be much smoother when using more phases. This also showed promising behaviour in convergence tests. Images of the vessels available in the preoperative coordinate system can then be transformed to the camera system and projected into the calibrated endoscope view using two video mixers with chroma keying. It is hoped that the augmented view can improve the efficiency of TECAB surgery and reduce the conversion rate to more conventional procedures. PMID:19773147

Figl, Michael; Rueckert, Daniel; Hawkes, David; Casula, Roberto; Hu, Mingxing; Pedro, Ose; Zhang, Dong Ping; Penney, Graeme; Bello, Fernando; Edwards, Philip

2009-09-20

260

Orbital Period of SDSSJ0256 (a DA + M Binary System)  

NASA Astrophysics Data System (ADS)

Studying WD+M binaries can give insight into the evolution of cataclysmic variables because of their presence in CVs' evolutionary process. SDSSJ0256 is a WD + M binary found in the SLOAN Digital Sky Survey which has not previously been studied; the SLOAN data does not include an orbital period. I used spectroscopic data from the Goodman Spectrograph on SOAR collected at various dates to find the changes in H- ? emission lines from the main sequence star throughout its orbit. From these wavelengths, I calculated the velocities, which were analyzed using a Lomb-Scargle periodogram to find SDSSJ0256's orbital period to be 2.6 hours (with a false-positive probability of 10%), its radial velocity semi-amplitude to be 32 ± 5 km/s, and its gamma velocity to be 19 ± 4 km/s. We compared this to other possible periods from the Lomb-Scargle periodogram using their power, false-positive probability as outlined by Frescura et al (2008), and ?2 testing. Although the fit to our data is far from perfect, the phase diagram shows a reasonably close trend. As such, this study points to an orbital period of approximately 2.6 hours for SDSSJ0256, to be made more certain by additional observations.

Gilfrich, Christine

2013-01-01

261

The Overlooked H II Region DA 568  

NASA Astrophysics Data System (ADS)

During the inspection of Canadian Galactic Plane Survey 1420 MHz continuum images of the outer Galaxy we have rediscovered the large, bright, H II region DA 568. Intriguingly, this region does not appear in any of the commonly used catalogs of H II regions and radio sources in the outer Galaxy. After demonstrating how DA 568 was essentially overlooked, we present new radio, infrared, and molecular line observations of the region. We show that, far from being a minor overlooked H II region, DA 568 is actually the most prominent part of a much larger star-forming complex in the Perseus arm of our Galaxy. The complex spans ~45×20 pc, contains over 104 Msolar of ionized and molecular gas, and includes the BFS 10 H II region and numerous associated IRAS sources. The star-forming complex is apparently quite evolved with most of the original giant molecular cloud having been severely disrupted by the action of DA 568.

Kerton, C. R.; Brunt, Christopher M.; Kothes, R.

2004-02-01

262

CARACTERIZAÇÃO DA PESCA DE LINHA E DINÂMICA DAS FROTAS LINHEIRAS DA BAHIA, BRASIL  

Microsoft Academic Search

RESUMO: A caracterização da pesca de linha e da distribuição batimétrica e sazonal do esforço de pesca das frotas linheiras estabelecidas no estado da Bahia e em operação na costa central, entre Salvador e o norte do Banco de Abrolhos (13-18ºS), foi estudada com base na amostragem de desembarques monitorados pelo Programa REVIZEE em Salvador, Valença, Ilhéus e Porto Seguro

GEORGE OLAVO; PAULO A. S. COSTA; AGNALDO S. MARTINS

263

Diminished synaptosomal dopamine (DA) release and DA autoreceptor supersensitivity in schizophrenia  

Microsoft Academic Search

Summary Post-mortem brain regions of schizophrenics were investigated in comparison to matched controls regarding synaptosomal K+-stimulated [3H]DA release and its modulation by DA autoreceptors. Brain specimens were cryopreserved in liquid nitrogen until release experiments; synaptosomes from brain pieces preincubated with dimethylsulfoxide have unchanged ability for [3H]DA release and its autoreceptor-mediated inhibition after cryo-preservation. Release data were individually corrected for post-mortem

L. Hetey; R. Schwitzkowsky; T. Ott; H. Barz

1991-01-01

264

Situação da Mulher na Astronomia Brasileira  

NASA Astrophysics Data System (ADS)

O conteúdo desse texto surgiu de uma apresentação de mesmo título que fiz na XXXI Reunião Anual da Sociedade Astronômica Brasileira (SAB) em 2005. Esse tema foi inspirado originalmente pela minha participação no "2nd UIPAP International Conference on Women in Physics" realizado entre 23 e 25 de maio de 2005 no Rio de Janeiro. Essa é uma conferência internacional que acontece de três em três anos, sendo que a primeira ocorreu em 2002 na cidade de Paris, França. Participei dessa conferência como membro da delegação da Sociedade Brasileira de Física e um dos trabalhos que apresentei versava sobre a situação das mulheres na Astronomia brasileira, cujos resultados principais discorro a seguir. A situação das astrônomas, baseada nos dados dos sócios da SAB coletados no final de 2004, é comparada com a das físicas brasileiras e também com as nossas colegas americanas. Os dados identificam ainda uma maior evasão da carreira por parte das mulheres do que os homens. Alguns dos possíveis motivos da evasão são discutidos, como o desejo de constituir família e/ou isolamento. Resultados um tanto preocupantes com relação à distribuição de bolsas de produtividade do CNPq também são apresentados. As principais discussões e estratégias recomendadas nesse congresso são mencionadas de forma resumida ao final.

Silva, Adriana V. R.

2007-07-01

265

Robotic total endoscopic coronary artery bypass hybrid revascularization procedure in a patient with a preoperative tracheostoma.  

PubMed

Preoperative tracheostoma presents a significant risk of sternal wound complications, mediastinitis, stoma necrosis and tracheal injury in patients requiring cardiac surgery. Several approaches have been described to limit these risks. Robotic totally endoscopic coronary artery bypass grafting in patients with a tracheostoma has not been reported. We describe a case of completely endoscopic coronary surgery using the daVinci(®) Si™ system in a patient with a tracheostoma. Single left internal mammary artery grafting to the left coronary artery system was carried out successfully as the first stage of a hybrid revascularization and followed by percutaneous coronary intervention to the circumflex coronary artery. We regard this technique as the most minimally-invasive method of surgical coronary revascularization with a significant potential to reduce the risk of mediastinitis in patients with a tracheostoma. PMID:21297145

Lehr, Eric J; van Wagenberg, Frans S; Haque, Reyaz; Bonatti, Johannes

2011-02-05

266

Theragnostik: Diagnostische Systeme mit integrierter Therapie  

NASA Astrophysics Data System (ADS)

Da mit den nachfolgend beschriebenen diagnostischen Systemen auch therapeutische Eingriffe möglich werden, deren Erfolg an die Qualität der bildgebenden Verfahren geknüpft ist, werden diese Verfahren als theragnostische Systeme bezeichnet. Dazu gehören:

Birkenbach, Rainer

267

PanDA Pilot Submission using Condor-G: Experience and Improvements  

SciTech Connect

PanDA (Production and Distributed Analysis) is the workload management system of the ATLAS experiment, used to run managed production and user analysis jobs on the grid. As a late-binding, pilot-based system, the maintenance of a smooth and steady stream of pilot jobs to all grid sites is critical for PanDA operation. The ATLAS Computing Facility (ACF) at BNL, as the ATLAS Tier1 center in the US, operates the pilot submission systems for the US. This is done using the PanDA 'AutoPilot' scheduler component which submits pilot jobs via Condor-G, a grid job scheduling system developed at the University of Wisconsin-Madison. In this paper, we discuss the operation and performance of the Condor-G pilot submission at BNL, with emphasis on the challenges and issues encountered in the real grid production environment. With the close collaboration of Condor and PanDA teams, the scalability and stability of the overall system has been greatly improved over the last year. We review improvements made to Condor-G resulting from this collaboration, including isolation of site-based issues by running a separate Gridmanager for each remote site, introduction of the 'Nonessential' job attribute to allow Condor to optimize its behavior for the specific character of pilot jobs, better understanding and handling of the Gridmonitor process, as well as better scheduling in the PanDA pilot scheduler component. We will also cover the monitoring of the health of the system.

Zhao X.; Hover John; Wlodek Tomasz; Wenaus Torre; Frey Jaime; Tannenbaum Todd; Livny Miron

2011-01-01

268

Comprehensive catecholaminergic projectome analysis reveals single-neuron integration of zebrafish ascending and descending dopaminergic systems.  

PubMed

Essential components of animal behaviour are modulated by dopaminergic (DA) and noradrenergic circuitry. In this study, we reveal at cellular resolution the complete set of projections ('projectome') of every single type of DA and noradrenergio neurons in the central nervous system of zebrafish larvae. The most extensive DA projections are established by posterior tubercular otp-dependent neurons, with individual somata integrating the ascending DA system, the descending diencephalospinal, as well as the endohypothalamic circuitry. These findings suggest a major role in the modulation of physiology and behaviour for otp-dependent DA neurons, which correlate with the mammalian A11 group. We further identified an endogenous subpallial DA system that not only provides most of the local DA projections, but also connects to the ventral diencephalon. The catecholaminergic projectome map provides a framework to understand the evolution and function of these neuromodulatory systems. PMID:21266970

Tay, Tuan Leng; Ronneberger, Olaf; Ryu, Soojin; Nitschke, Roland; Driever, Wolfgang

2011-01-25

269

Robotic-Assisted Minimally Invasive Surgery for Gynecologic and Urologic Oncology  

PubMed Central

Executive Summary Objective An application was received to review the evidence on the ‘The Da Vinci Surgical System’ for the treatment of gynecologic malignancies (e.g. endometrial and cervical cancers). Limitations to the current standard of care include the lack of trained physicians on minimally invasive surgery and limited access to minimally invasive surgery for patients. The potential benefits of ‘The Da Vinci Surgical System’ include improved technical manipulation and physician uptake leading to increased surgeries, and treatment and management of these cancers. The demand for robotic surgery for the treatment and management of prostate cancer has been increasing due to its alleged benefits of recovery of erectile function and urinary continence, two important factors of men’s health. The potential technical benefits of robotic surgery leading to improved patient functional outcomes are surgical precision and vision. Clinical Need Uterine and cervical cancers represent 5.4% (4,400 of 81,700) and 1.6% (1,300 of 81,700), respectively, of incident cases of cancer among female cancers in Canada. Uterine cancer, otherwise referred to as endometrial cancer is cancer of the lining of the uterus. The most common treatment option for endometrial cancer is removing the cancer through surgery. A surgical option is the removal of the uterus and cervix through a small incision in the abdomen using a laparoscope which is referred to as total laparoscopic hysterectomy. Risk factors that increase the risk of endometrial cancer include taking estrogen replacement therapy after menopause, being obese, early age at menarche, late age at menopause, being nulliparous, having had high-dose radiation to the pelvis, and use of tamoxifen. Cervical cancer occurs at the lower narrow end of the uterus. There are more treatment options for cervical cancer compared to endometrial cancer, however total laparoscopic hysterectomy is also a treatment option. Risk factors that increase the risk for cervical cancer are multiple sexual partners, early sexual activity, infection with the human papillomavirus, and cigarette smoking, whereas barrier-type of contraception as a risk factor decreases the risk of cervical cancer. Prostate cancer is ranked first in men in Canada in terms of the number of new cases among all male cancers (25,500 of 89,300 or 28.6%). The impact on men who develop prostate cancer is substantial given the potential for erectile dysfunction and urinary incontinence. Prostate cancer arises within the prostate gland, which resides in the male reproductive system and near the bladder. Radical retropubic prostatectomy is the gold standard treatment for localized prostate cancer. Prostate cancer affects men above 60 years of age. Other risk factors include a family history of prostate cancer, being of African descent, being obese, consuming a diet high in fat, physical inactivity, and working with cadium. The Da Vinci Surgical System The Da Vinci Surgical System is a robotic device. There are four main components to the system: 1) the surgeon’s console, where the surgeon sits and views a magnified three-dimensional image of the surgical field; 2) patient side-cart, which sits beside the patient and consists of three instrument arms and one endoscope arm; 3) detachable instruments (endowrist instruments and intuitive masters), which simulate fine motor human movements. The hand movements of the surgeon’s hands at the surgeon’s console are translated into smaller ones by the robotic device and are acted out by the attached instruments; 4) three-dimensional vision system: the camera unit or endoscope arm. The main advantages of use of the robotic device are: 1) the precision of the instrument and improved dexterity due to the use of “wristed” instruments; 2) three-dimensional imaging, with improved ability to locate blood vessels, nerves and tissues; 3) the surgeon’s console, which reduces fatigue accompanied with conventional laparoscopy surgery and allows for

2010-01-01

270

A Integracao de Ensino das Ciencias da Saude (An Integrated Medical Education Program [in Brazil]).  

ERIC Educational Resources Information Center

|At the Sixth Annual Reunion of the Brazilian Association of Medical Schools (VI Reuniao Anual da Associacao Brasileira de Escolas Medicas) leaders in the Brazilian medical profession proposed an integrated educational program for training students in the fields of medicine and public health. Under Brazil's present system of education, all…

Pourchet-Campos, M. A.; Guimaraes Junior, Paulino

271

MK-80 1 Prevents Alterations in the Mesoaccumbens Dopamine System Associated with Behavioral Sensitization to Amphetamine  

Microsoft Academic Search

Behavioral sensitization to psychomotor stimulants has been shown to be accompanied by a number of alterations in the mesoaccumbens dopamine (DA) system, including DA au- toreceptor subsensitivity in the ventral tegmental area (VTA), postsynaptic D, receptor supersensitivity in the nucleus ac- cumbens (NAc), and augmentation of the DA-releasing ef- fects of stimulants in the NAc. The present study examined whether

Marina E. Wolf; Francis J. White; Xiu-Ti Hu

1994-01-01

272

Opposite Responses of Mesolimbic Dopamine System to Controllable and Uncontrollable Aversive Experiences  

Microsoft Academic Search

It has been previously shown that rodents exposed to stress- ful experiences show a biphasic response of the mesolimbic dopamine (DA) system, that is, initial increase of DA release followed by a decrease below control levels (Puglisi-Allegra et al., 1991). Evidence is now presented showing that mice exposed to a series of foot shocks show an increase of DA release

Simona Cabibl

1994-01-01

273

Data Aggregation in Multi-Agent Systems in the Presence of Hybrid Faults  

ERIC Educational Resources Information Center

Data Aggregation (DA) is a set of functions that provide components of a distributed system access to global information for purposes of network management and user services. With the diverse new capabilities that networks can provide, applicability of DA is growing. DA is useful in dealing with multi-value domain information and often requires…

Srinivasan, Satish Mahadevan

2010-01-01

274

Yonsei Experience in Robotic Urologic Surgery - Application in Various Urological Procedures  

PubMed Central

Purpose The da Vinci® robot system has been used to perform complex reconstructive procedures in a minimally invasive fashion. Robot-assisted laparoscopic radical prostatectomy has recently established as one of the standard cares. Based on experience with the robotic prostatectomy, its use is naturally expanding into other urologic surgeries. We examine our practical pattern and application of da Vinci® robot system in urologic field. Patients and Methods Robotic urologic surgery has been performed during a period from July 2005 to August 2008 in a total of 708 cases. Surgery was performed by 7 operators. In our series, radical prostatectomy was performed in 623 cases, partial nephrectomy in 43 cases, radical cystectomy in 11 cases, nephroureterectomy in 18 cases and other surgeries in 15 cases. Results In the first year, robotic urologic surgery was performed in 43 cases. However, in the second year, it was performed in 164 cases, and it was performed in 407 cases in the third year. In the first year, only prostatectomy was performed. In the second year, partial nephrectomy (2 cases), nephroureterectomy (3 cases) and cystectomy (1 case) were performed. In the third year, other urologic surgeries than prostatectomy were performed in 64 cases. The first robotic surgery was performed with long operative time. For instance, the operative time of prostatectomy, partial nephrectomy, cystectomy and nephroureterectomy was 418, 222, 340 and 320 minutes, respectively. Overall, the mean operative time of prostatectomy, partial nephrectomy, cystectomy and nephrourectectomy was 179, 173, 309, and 206 minutes, respectively. Conclusion Based on our experience at a single-institution, robot system can be used both safely and efficiently in many areas of urologic surgeries including prostatectomy. Once this system is familiar to surgeons, it will be used in a wide range of urologic surgery.

Park, Sung Yul; Jeong, Wooju; Choi, Young Deuk; Chung, Byung Ha; Hong, Sung Joon

2008-01-01

275

ANÁLISE ESTILÍSTICA DA TRADUÇÃO PORTUGUESA DE DE JOODSE MESSIAS DE A.GRUNBERG: TRANSCULTURALIDADE DA IRONIA  

Microsoft Academic Search

Resumo: Este artigo visou a compreensão da parte que a linguagem desempenha na criação de significado e efeito textuais. Para tal, foram analisados extractos da obra neerlandesa De joodse messias de Arnon Grunberg. O objectivo foi elaborar uma comparação ao nível estilístico entre esta obra neerlandesa e uma tradução em Português. Elementos como a ironia e temas recorrentes na literatura

Andreia Carita

276

revisão Secreção da Insulina: Efeito Autócrino da Insulina e Modulação por Ácidos Graxos  

Microsoft Academic Search

219 RESUMO A insulina exerce um papel central na regulação da homeostase da gli- cose e atua de maneira coordenada em eventos celulares que regulam os efeitos metabólicos e de crescimento. A sub-unidade ? do receptor de insulina possui atividade tirosina quinase intrínseca. A autofosforilação do receptor, induzida pela insulina, resulta na fosforilação de substratos protéicos intracelulares, como o substrato-1

Esther P. Haber; Rui Curi; Carla R. O. Carvalho; Angelo R. Carpinelli

2001-01-01

277

Valor nutritivo da silagem de milho sob o efeito da inoculação de bactérias ácido-láticas  

Microsoft Academic Search

RESUMO - Os resultados obtidos com a inoculação microbiana de diferentes plantas forrageiras, para a produção de silagens, têm apresentado resultados conflitantes. Objetivou-se, com o presente estudo, avaliar os efeitos da inoculação microbiana da planta de milho, para a produção de silagem, sobre a digestibilidade total em carneiros. Oito carneiros machos e castrados foram distribuídos em um delineamento em cross-over,

Paulo Henrique Mazza Rodrigues; Stefano Juliano Tavares de Andrade; Juliana Martins Ruzante; Felix Ribeiro de Lima; Laércio Melotti

2002-01-01

278

FECUNDIDADE EM Callinectes danae SMITH (DECAPODA, PORTUNIDAE) DA LAGOA DA CONCEIÇÃO, FLORIANÓPOLIS, SANTA CATARINA, BRASIL  

Microsoft Academic Search

FECUNDITY OF Callinectes danae SMITH (DECAPODA, PORTUNIDAE) IN LAGOA DA CONCEIÇÃO, SANTA CATARINA, BRAZIL. The estimate for the average fecundity for the C. dance population of Lagoa da Conceição (Florianópolis, Santa Catarina) was of 598.885 eggs by female. The average number of eggs and the weight of the mass of eggs, in general, increase with the female size. The variation

Joaquim Olinto Branco; Marcelo Gentil Avilar

279

Robotics and telesurgery--an update on their position in laparoscopic radical prostatectomy.  

PubMed

Laparoscopy is handicapped by the reduction of the range of motion from six to only four degrees of freedom. In complicated cases (i.e. radical prostatectomy), there is often a crossing of the hands of surgeon and assistant. Finally, standard laparoscopes allow only 2D-vision. This has a major impact on technically difficult reconstructive procedures such as laparoscopic radical prostatectomy. Solutions include the understanding of the geometry of laparoscopy, but also newly developed surgical robots. During the last five years, there has been an increasing development and experience with robotics in urology. This article reviews the actual results focussing on the benefits and problems of robotics in laparoscopic radical prostatectomy. Own experiences with robot-assisted surgery include more than 1200 laparoscopic radical prostatectomies using a voice-controlled camera-arm (AESOP) as well as six telesurgical interventions with the da Vinci-system. Substantial experimental studies have been performed focussing on the geometry of laparoscopy and new training concepts such as perfused pelvitrainers and models for simulation of urethrovesical anastomosis. The recent literature on robotics in urology has been reviewed based on a MEDLINE/PUBMED research. The geometry of laparoscopy includes the angles between the instruments which have to be in a range of 25 degrees to 45 degrees ; the angles between the instrument and the working plane that should not exceed 55 degrees ; and the bi-planar angle between the shaft of the needle holder and the needle which has to be adapted according to the anatomical situation in range of 90 degrees to 110 degrees . 3-D-systems have not yet proved to be effective due to handling problems such as shutter glasses, video helmets or reduced brightness. At the moment, there are only two robotic surgical systems (AESOP, da Vinci) in clinical use, of which only the da Vinci provides stereovision and all six degrees of freedom (DOF). To date, more than 3000 laparoscopic radical prostatectomies have been performed worldwide at 92 centres with this system. The main advantage of the system represents the translation of open surgical skills to laparoscopy. Despite recent development of basic tools (e.g. bipolar forceps) for the da Vinci robot, investment and maintenance costs still represent the major problem of the device. Additionally, the device does not provide any haptic sense (i.e. tactile feedback). Robotic surgery represents a turning point of surgical research. However, broad use of robotic systems is limited mainly because of the high investment and running costs. Interestingly, more than in the field of cardiac surgery, there seems to be a need for telemanipulators in urology, mainly to reduce the learning curve of standard laparoscopy. However, new training concepts used in combination with mono-tasking computerized robots (AESOP) have proved their efficacy associated with a significant cost reduction. PMID:16754625

Rassweiler, J; Safi, K C; Subotic, S; Teber, D; Frede, T

2005-01-01

280

The Ro 60 kDa autoantigen: insights into cellular function and role in autoimmunity  

Microsoft Academic Search

An RNA-binding protein, the Ro 60 kDa autoantigen, is a major target of the immune response in patients suffering from two systemic rheumatic diseases, systemic lupus erythematosus and Sjogren’s syndrome. In lupus patients, anti-Ro antibodies are associated with photosensitive skin lesions and with neonatal lupus, a syndrome in which mothers with anti-Ro antibodies give birth to children with photosensitive skin lesions

Xinguo Chen; Sandra L. Wolin

2004-01-01

281

The Art of Drawing  

Microsoft Academic Search

No other discipline is quite like drawing. Nothing can replace that which drawing has bestowed upon mankind throughout history. Drawing is so distinctive that even the power of words cannot describe nor replace its graces. Leonardo da Vinci illustrates this phenomenal quality in elaborate notes that he collected throughout the years of his career as an artist, scientist, engineer, and

Meili Peterson; Texas Alpha

282

\\  

Microsoft Academic Search

The relation between seeing, knowledge, and language has concerned philosophers and artists throughout history. The current article examines the relation between word, image, and knowledge in some prominent Renaissance artworks. It is argued that the shift from revelatory truth in the word to evidence in “seeing the real” as Leonardo da Vinci (1452 -1519) argues in his writings, marks a

Eva Maria Raepple

2009-01-01

283

Pharmacogenomics: implications and considerations for pharmacists.  

PubMed

The Renaissance period of world history is analogous to the renewal of healthcare that will arise from pharmacogenomic discoveries. Just as geography, science, art and communication were reawakened by the works of Columbus, da Vinci, Michelangelo and Gutenberg; genetic science will revitalize the clinical role of pharmacists and generate new interest in pharmacy research and education. PMID:12718722

Brock, Tina Penick; Valgus, John M; Smith, Scott R; Summers, Kelly M

2003-05-01

284

On the Developing Role of Physical Models in Engineering Design Education  

ERIC Educational Resources Information Center

|Recent research, undertaken using participative observation methods within the Leonardo Da Vinci project "Open-Dynamic-Design", provides evidence that EU industrial practice continues to value the flexibility of physical models across a range of disciplines. This research is placed within the philosophical educational framework established by…

Green, Graham; Smrcek, Ladislav

2006-01-01

285

Nature Foil Reliefs  

ERIC Educational Resources Information Center

|Nature has always been a source of inspiration for artists across the centuries. Artists such as Leonardo da Vinci, Georgia O'Keeffe, Ansel Adams, and Andy Goldsworthy all drew inspiration for their work from nature. Seeds come from the dried pods, which when planted and cared for, bear fruit. In this article, the author describes how her…

Lane, Shaw J.

2012-01-01

286

Leonardo's Machines  

NSDL National Science Digital Library

This Science NetLinks lesson will highlight some of Leonardo da Vinci's futuristic inventions, introducing the elements of machines. Through the use of student interactives, this lesson provides an interesting context in which students can begin to develop their ideas about the uniqueness of humans in the natural world.

Science Netlinks;

2003-03-05

287

The Prelude to the Millennium: The Backstory of Digital Aesthetics  

ERIC Educational Resources Information Center

|The artist and scientist have been depicted as polar opposites since Michelangelo claimed that Leonardo da Vinci was wasting time with foolish inventions while his art suffered. However, the artist taking on the role of the researcher has precedent. In the 1960s, Experiments in Art and Technology (E.A.T.), led by Bell Labs' engineer Billy Kluver,…

Mayo, Sherry

2008-01-01

288

The benefits of using a market share model in a simulation aided planning game  

Microsoft Academic Search

During the realization of the CAESAR planning games, which has been supported by the European Leonardo da Vinci Programme, the use of modular planning games within a global scenario has shown to be very effective in concisely relaying educational content from the area of production management. In particular the close-to-reality situations have proven, time and again, to be highly motivating

Gert Zülch; Jörg Fischer

2003-01-01

289

Getting in gear: human-powered transportation  

Microsoft Academic Search

High fuel costs and periodic fuel shortages may make bicycle riding and other human-powered vehicles (HPV) and human-powered transportation (HPT) modes more socially acceptable. The history of HPVs is traced from the drawings of Leonardo da Vinci to the wide range of modern bicycle designs. Recent interest and competition among HPVs has brought rapid improvements and modifications, such as the

1979-01-01

290

Towards an effective and life long training of people with special needs for help desk operations utilising ICT  

Microsoft Academic Search

TELL-IT is an European Community project supported by the Leonardo Da Vinci II programme whose main objective is to develop a multimedia, flexible and continuing training program for on-the-job training for disabled people in order to be employed in the service provision sector and, more specifically, in helpdesk operations.

E. Bekiaris; A. R. Ascaso; E. C. Alvarez; C. Papatheodorou; M. T. A. Waldmeyer

2004-01-01

291

Guidance for Assistive Technologies in Education and the Workplace Advancing Young People with Disabilities: Opening Doors For Young People With Disabilities  

Microsoft Academic Search

The GATEWAY Project, funded through the Leonardo Da Vinci Community Vocational Training Action Programme, was designed to facilitate and encourage the use of Assistive Technologies for people with disabilities entering both 3rd level education and the workplace. This project has been developed in direct response to the lack of National and European guidelines for assessment of individuals with special learning

Jean HUGHES

292

Robotic mitral valve surgery  

Microsoft Academic Search

Traditionally mitral valve surgery has been performed via median sternotomy. However, a renaissance in cardiac surgery is occurring. Cardiac operations are being performed through smaller and alternative incisions with enhanced technological assistance. Specifically, minimally invasive mitral valve surgery has become standard for many surgeons. At our institution, we have developed a robotic mitral surgery program with the da VinciTM telemanipulation

Alan P. Kypson; L. Wiley Nifong; W. Randolph Chitwood

2003-01-01

293

Mona Lisa syndrome: solving the enigma of the Gioconda smile.  

PubMed

The Mona Lisa smile is presented as a possible example of facial muscle contracture that develops after Bell's palsy when the facial nerve has undergone partial wallerian degeneration and has regenerated. The accompanying synkinesis would explain many of the known facts surrounding the painting and is a classic example of Leonardo da Vinci as the compulsive anatomist who combined art and science. PMID:2647018

Adour, K K

1989-03-01

294

Visualizing and analyzing the Mona Lisa.  

PubMed

Size and scale issues present a complexity problem in visualizing detailed 3D models built from sensor data. A model of Leonardo da Vinci's Mona Lisa, with its thin pictorial layer, illustrates the need for intuitive real-time processing tools that are seamlessly integrated with a multiresolution visualization environment. PMID:18027798

Borgeat, Louis; Godin, Guy; Massicotte, Philippe; Poirier, Guillaume; Blais, François; Beraldin, J Angelo

295

In the Palm of Leonardo’s Hand: Modeling Polyhedra  

Microsoft Academic Search

.  George W. Hart presents three examples of new computer-based “3D printing” techniques for recreating the historically important\\u000a polyhedral models of Leonardo da Vinci and Luca Pacioli. It is hoped that such models will inspire students and the public\\u000a to appreciate the history and beauty of polyhedra for architectural and other applications.

George W. Hart

2002-01-01

296

Writing and Drawing in the Naturalist's Journal  

NSDL National Science Digital Library

The mutually reinforcing integration of science and art is clearly seen in the journals and notebooks kept by creative thinkers and explorers since the time of Leonardo da Vinci. The Naturalist's Journal is an effective tool for learning about nature and science and can be an effective teaching strategy.

Dirnberger, Joseph M.; Mccullagh, Steven; Howick, Tom

2005-01-01

297

Art, Mathematics and Architecture for Humanistic Renaissance: the Platonic Solids  

Microsoft Academic Search

Platonic solids and the polyhedra have been connected with the world of art and architecture in different cultures and through many centuries. For some Renaissance artists, for example Leonardo da Vinci (1452 -1519), Albrecht Dürer (1471-1528), Piero della Francesca (around 1420-1492), this solids provided the models to demonstrate the properties of the symmetry and to apply the laws of the

Nicoletta Sala

298

Cryptographer  

ERIC Educational Resources Information Center

|For the general public, the field of cryptography has recently become famous as the method used to uncover secrets in Dan Brown's fictional bestseller, The Da Vinci Code. But the science of cryptography has been popular for centuries--secret hieroglyphics discovered in Egypt suggest that code-making dates back almost 4,000 years. In today's…

Sullivan, Megan

2005-01-01

299

Automated Tool Handling for the Trauma Pod Surgical Robot  

Microsoft Academic Search

ó In order to enable robotic surgery without human assistance, a means must be developed to change tools. As part of the larger Traumapod Project, we developed the Tool Rack Subsystem ó an automated tool rack capable of holding, accepting, and dispensing up to 14 tools for the DaVinciT M surgical robot. Borrowing some techniques from industrial au- tomation, we

Diana C. W. Friedman; Jesse Dosher; Tim Kowalewski; Jacob Rosen; Blake Hannaford

2007-01-01

300

Robot-assisted laparoscopic repair of ventral hernia with intracorporeal suturing  

Microsoft Academic Search

Background: This study presents a novel technique for laparoscopic ventral hernia repair using the da Vinci Robot and intracorporeal suturing. Thus, it offers an alternative to transabdominal sutures and tackers. Methods: A ventral hernia model was created in six pigs. The mesh was fixed to the circumference of the fascia using interrupted sutures. The outer border of the mesh was

S. Schluender; J. Conrad; C. M. Divino; B. Gurland

2003-01-01

301

ROBOTIC MICROSURGICAL VASOVASOSTOMY AND VASOEPIDIDYMOSTOMY: A PROSPECTIVE RANDOMIZED STUDY IN A RAT MODEL  

Microsoft Academic Search

PurposeMicrosurgical vasovasostomy and vasoepididymostomy remain technically challenging procedures. Refinements in technique have continually improved patency and pregnancy rates for the 2 procedures in experienced hands. Advances in surgical robotics produced the Da Vinci robot (Intuitive Surgical, Inc., Sunnyvale, California) with motion reduction and no tremor, features that may improve outcomes in microsurgery. We report a randomized prospective study of vasoepididymostomy

JONATHAN SCHIFF; PHILIP S. LI; MARC GOLDSTEIN

2004-01-01

302

Differential PIXE for investigating the layer structure of paintings  

Microsoft Academic Search

This paper reports an example of how the differential PIXE technique can be successfully applied to the investigation of wood or canvas paintings. The work analysed is a famous wood painting by Leonardo da Vinci, the “Madonna dei fusi” (ex-Reford version, 1501), chosen for a pilot study in a wide international project aimed at analysing Leonardo’s works of art by

P. A. Mandò; M. E. Fedi; N. Grassi; A. Migliori

2005-01-01

303

\\  

Microsoft Academic Search

The Biomedical Engineering sector of industry faces a lack of qualified technicians and researchers. In this specific field, researchers and technicians require appropriate underpinning knowledge and the development of skills and competence through laboratory and workshop practice. This paper presents a Leonardo da Vinci pilot-project called Web-based learning and training in the field of Biomedical and Design engineering (WEBD). This

Ph. Skittides; J. Vander Sloten; O. Ciobanu; S. Bianchi; M. Martinez Muneta; S. Tornincasa

304

CURRICULAR PATHS IN THE SUPERCOMET 2 EXPERIMENTATION IN ITALY  

Microsoft Academic Search

Supercomet 2 (SUPERCOnductivity Multimedia Educational Tool phase 2) is a Project within the Program Leonardo da Vinci phase II of the European Union, involving Universities and Secondary Schools of 15 European Countries. The objectives of this Project is the production of a multimedia tool for teaching superconductivity and to create an international community at European level, able to revitalize the

Federico Corni; Marisa Michelini; Lorenzo Santi; Alberto Stefanel; Rossana Viola

305

FOOTBRIDGE DESIGN IN VIALE REGIONE SICILIANA IN PALERMO  

Microsoft Academic Search

This paper investigates some solutions designed by the author, as structural consulting engineer of the municipal administration of Palermo, to build a footbridge over Viale Regione Siciliana, in the section between Via Perpignano and Viale Leonardo Da Vinci. The pedestrian underpass put in place in the 1990s, during the construction of the new road, was considered to be unsatisfactory for

306

LEONARDO COPISTA DAL CODICE A AL CODICE MADRID I  

Microsoft Academic Search

Il Codice A di Leonardo da Vinci, datato al 1492 per mano dell'autore, è dedicato a una pluralità di argomenti: fisica, ottica, geometria, moto delle acque, prospettiva e pittura. Molti passi sulla fisica meccanica, tuttavia, vennero in un secondo tempo cancellati dalla prima trentina di fogli. In larga parte essi coincidono con i brani che A.M. Brizio e L. Reti

Marianna Molica Franco

2002-01-01

307

Mirror writing resulting from an egocentric representation disorder: A case report  

Microsoft Academic Search

Buchwald (1878) used the term ‘mirror writing’ to indicate writing in the reverse direction to what is normal in a particular language and in which the individual letters are also reversed. Cases of healthy individuals (i.e., Leonardo da Vinci and Lewis Carroll) as well as brain-damaged patients have been described in the literature. Here, we report the case of PM,

L. Canzano; L. Piccardi; I. Bureca; C. Guariglia

2011-01-01

308

A Multimedia Tool for \\  

Microsoft Academic Search

We present the preliminary results of a project developed in the scope of the EC Leonardo da Vinci program. The objective of this project is to develop a CD-ROM for education and training in the domain of signal processing for the acoustic and vibration diagnosis of rotating machines. The project will cover basic methods of signal processing which apply in

M. Sidahmed; P. Morizet; Philippe Trigano; J. K. Hammond; S. Braun; G. Dalpiaz; U. Meneghetti; Adriana Maggiore

1999-01-01

309

Dr Erasmus Darwin (1731–1802) of Lichfield and placental respiration  

Microsoft Academic Search

Erasmus Darwin was a great philosopher, scientist, inventor, poet, and physician. His creative intellect has been compared with that of Leonardo da Vinci. This brief article draws attention to two perinatal contributions made on placental respiration and management of the umbilical cord.

P M Dunn

2003-01-01

310

Educational aspects of mechatronic control course design for collaborative remote laboratory  

Microsoft Academic Search

This paper addresses educational aspects of a distance learning mechatronic control course, which is one of the 18 courses that compound an international collaborative remote laboratory designed for students of electrical engineering. The work is undertaken in the frame of European Leonardo da Vinci project EDIPE ldquoE-learning distance interactive practical educationrdquo with a goal to offer Web based experimental courses

Andreja Rojko; Darko Hercog; Karel Jezernik

2008-01-01

311

Historical Scientific Models and Theories as Resources for Learning and Teaching: The Case of Friction  

ERIC Educational Resources Information Center

|This paper presents a history of research and theories on sliding friction between solids. This history is divided into four phases: from Leonardo da Vinci to Coulomb and the establishment of classical laws of friction; the theories of lubrication and the Tomlinson's theory of friction (1850-1930); the theories of wear, the Bowden and Tabor's…

Besson, Ugo

2013-01-01

312

Surgically repaired cleft lips depicted in paintings of the late Gothic period and the Renaissance  

Microsoft Academic Search

Paintings and drawings by Lucas Moser, Leonardo da Vinci, Albrecht Dürer, and Jacob Cornelisz van Oostsanen suggest that they employed people who had had cleft lips operated on as models for their works of art. Created between 1431 and 1520, the portraits show diagnostic facial profiles with a curved nasal dorsum, short columella, maxillary retrusion, and pseudoprogenia. The first medical

W. Pirsig; St. Haase; F. Palm

2001-01-01

313

Art as science: scientific illustration, 1490–1670 in drawing, woodcut and copper plate  

Microsoft Academic Search

Observation, depiction and description are active forces in the doing of science. Advances in observation and analysis come with advances in techniques of description and communication. In this article, these questions are related to the work of Leonardo da Vinci, 16th-century naturalists and artists like Conrad Gessner and Teodoro Ghisi, and 17th-century micrographers like Robert Hooke.

Cynthia M Pyle

2000-01-01

314

On the developing role of physical models in engineering design education  

Microsoft Academic Search

Recent research, undertaken using participative observation methods within the Leonardo Da Vinci project ‘Open-Dynamic-Design’, provides evidence that EU industrial practice continues to value the flexibility of physical models across a range of disciplines. This research is placed within the philosophical educational framework established by Schon and examples of implementation within the Mechanical and Aerospace Engineering disciplines at the University of

Graham Green; Ladislav Smrcek

2006-01-01

315

Historical Scientific Models and Theories as Resources for Learning and Teaching: The Case of Friction  

ERIC Educational Resources Information Center

This paper presents a history of research and theories on sliding friction between solids. This history is divided into four phases: from Leonardo da Vinci to Coulomb and the establishment of classical laws of friction; the theories of lubrication and the Tomlinson's theory of friction (1850-1930); the theories of wear, the Bowden and Tabor's…

Besson, Ugo

2013-01-01

316

Bringing History Alive in the Classroom!  

ERIC Educational Resources Information Center

This document consists of the first four issues of a serial publication, "Bringing History Alive in the Classroom!" The volumes focus on: (1) "A Sampling of Renaissance Instruments," which includes: information on Christopher Columbus, Leondardo da Vinci, and William Shakespeare, a timeline from the middle ages through the renaissance, Queen…

McRae, Lee, Ed.

1996-01-01

317

La physique des bulles de champagne Une première approche des processus physico-chimiques liés à l'effervescence des vins de Champagne  

Microsoft Academic Search

People have long been fascinated by bubbles and foams dynamics, and since the pioneering work of Leonardo da Vinci in the early 16th century, this subject has generated a huge bibliography. However, only very recently, much interest was devoted to bubbles in Champagne wines. Small bubbles rising through the liquid, as well as a bubble ring (the so-called collar) at

G. Liger-Belair

2002-01-01

318

Everyday Electrical Engineering: A One-Week Summer Academy Course for High School Students  

ERIC Educational Resources Information Center

|A summer academy is held for grade 9-12 high school students at the University of Toronto, Toronto, ON, Canada, every year. The academy, dubbed the Da Vinci Engineering Enrichment Program (DEEP), is a diverse program that aims to attract domestic and international high school students to engineering and sciences (and possibly recruit them). DEEP…

Mehrizi-Sani, A.

2012-01-01

319

To Document or Not to Document, That is the Question? Use of the Participatory Archive Model for a Residential Artist’s Centre  

Microsoft Academic Search

Men of genius really are doing most when they work least, as they are thinking out ideas and perfecting the conceptions which they will subsequently carry out with their hands.’ (Leonardo da Vinci) There is a romantic notion that regards all forms of Art as emanating from the gods and artists as the mere conduits for this divine inspiration. This

Yvonne Desmond

2009-01-01

320

Nanosecond Neutron Analysis for the search of the lost Leonardo’s masterpiece, the Battle of Anghiari  

Microsoft Academic Search

Between 1505 and 1506 Leonardo Da Vinci painted his masterpiece, the Battle of Anghiari, in Palazzo Vecchio’s Hall of 500 in Florence. The unfinished mural remained visible until 1563, when architect Giorgio Vasari undertook a renovation of the Hall and all traces of the Battle of Anghiari were lost. However, scholarly interpretation and scientific evidence suggest that the mural could

A. V. Kuznetsov; I. Yu. Gorshkov; A. V. Evsenin; O. I. Osetrov; D. N. Vakhtin; A. Cosentino; M. Seracini

2009-01-01

321

How Temporal Distance Changes Novices' Attitudes Towards Unconventional Arts  

Microsoft Academic Search

The authors suggest that, just like other attitudes, attitudes toward art may be malleable, and may thus also depend on situational factors. In particular, the authors propose that thinking styles vary within the situation and that an abstract versus concrete thinking style has an influence on attitudes toward conventional (e.g., Mona Lisa by da Vinci) versus unconventional (e.g., Fat Corner

Katrin Schimmel; Jens Förster

2008-01-01

322

Is it turquoise + fuchsia = purple or is it turquoise + fuchsia = blue?  

NASA Astrophysics Data System (ADS)

The first step in communicating color is to name it. The second step is color semiotics. The third step is introducing structure in the set of colors. In color education at all levels, this structure often takes the form of formulae, like red + green = yellow, or turquoise + red = black. In recent times, Johannes Itten's color theory and its associated color wheel have been very influential, mostly through its impact on Bauhaus, although a number of color order systems and circles have been introduced over the centuries. Students get confused when they are trying to formulate the color name arithmetic using the structure of color order systems and concepts like complementary colors and opponent colors. Suddenly turquoise + fuchsia = purple instead of blue; purple and violet become blurred, and finally the student's head explodes under the epistemological pressures of Itten, Albers, Goethe, Runge, Newton, da Vinci, and all the other monsters of color structure. In this contribution we propose a systematic presentation of structure in color, from color theories to color naming. We start from the concept of color perception introduced by da Vinci and work ourselves through color measurement, color formation, and color naming, to develop the basis for a robust system based on table lookup and interpolation. One source of confusion is that color naming has been quite loose in color theory, where for example red can be used interchangeably with fuchsia, and blue with turquoise. Furthermore, common color terms are intermingled with technical colorant terms, for example cyan and aqua or fuchsia and magenta. We present the evolution of a few color terms, some of which have experienced a radical transition over the centuries, and describe an experiment showing the robustness of crowd-sourcing for color naming.

Beretta, Giordano B.; Moroney, Nathan M.

2011-01-01

323

Expression, processing, and glycosaminoglycan binding activity of the recombinant human 315-kDa hyaluronic acid receptor for endocytosis (HARE).  

PubMed

The hyaluronic acid (HA) receptor for endocytosis (HARE; also designated stabilin-2 and FEEL-2) mediates systemic clearance of glycosaminoglycans from the circulatory and lymphatic systems via coated pit-mediated uptake. HARE is primarily found as two isoforms (315- and 190-kDa) in sinusoidal endothelial cells of the liver, lymph node, and spleen. Here we characterize the ligand specificity and function of the large stably expressed 315-HARE isoform in Flp-In 293 cell lines. Like human spleen sinusoidal endothelial cells, Flp-In 293 cell lines transfected with a single cDNA encoding the full-length 315-HARE express both the 315-kDa and the proteolytically truncated 190-kDa isoforms in a ratio of approximately 3-4:1. The 190-kDa HARE isoform generated from the 315-kDa HARE and the 315-kDa HARE specifically bound 125I-HA. Like the 190-kDa HARE expressed alone (Harris, E. N., Weigel, J. A., and Weigel, P. H. (2004) J. Biol. Chem. 279, 36201-36209), the 190- and 315-kDa HARE isoforms expressed in 315-HARE cell lines were recognized by anti-HARE monoclonal antibodies 30, 154, and 159. All 315-HARE cell lines could endocytose and degrade 125I-HA. Competition studies with live cells indicate that 190-HARE and 315-HARE bind HA with higher apparent affinity (Kd approximately 10-20 nM) than chondroitin sulfate (CS) types A, C, D, or E. Only slight competition of HA endocytosis was observed with CS-B (dermatan sulfate) and chondroitin. Direct binding assays with the 315-HARE ectodomain revealed high affinity HA binding, and lower binding affinities for CS-C, CS-D, and CS-E. A majority of each HARE isoform was intracellular, within the endocytic system, suggesting transient surface residency typical of an active endocytic recycling receptor. PMID:17145755

Harris, Edward N; Kyosseva, Svetlana V; Weigel, Janet A; Weigel, Paul H

2006-12-04

324

IDENTIFICATION OF SUBPART DA SOURCES AND EPA (ENVIRONMENTAL PROTECTION AGENCY) REGIONAL/STATE AGENCY CONTACTS FOR THE IMPLEMENTATION OF APPENDIX F: PROCEDURE 1  

EPA Science Inventory

Appendix F, Procedure 1, 'Quality Assurance Requirements for Gaseous Continuous Emission Monitoring Systems Used for Compliance', of 40 CFR 60 requires that sources subject to Standards of Performance for New Stationary Sources, Subpart Da conduct certain quality assurance activi...

325

Uniform remote control of front end processors in PAN-DA  

SciTech Connect

The PAN-DA data acquisition software system encompasses support for a variety of front end processors including the Struck General Purpose Master (GPM), the Fermilab Smart Crate Controller (FSCC), and the Motorola MVME133-A VME single board computer. PAN-DA provides support for the remote control of these processors through its Remote Procedure eXecution (RPX) software. This software runs over serial lines, and in some PAN-DA environments, over the Ethernet and TCP/IP as well. Experiments E791 and E771 have successfully used RPX software in both FSCC software development and data collection during the 1990--1991 fixed target run at Fermilab. RPX software has facilitated development and testing of the Fermilab Silicon Strip Detector readout system, for which the FSCC is an integral component. RPX based control and monitoring of the GPM and the MVME133-A are essential parts of the PAN-DA data acquisition system used by E687 and E773 during the 1990--1991 run. 6 refs., 2 figs.

Berg, D.; Berman, E.; MacKinnon, B.; Nicinski, T.; Oleynik, G.; Petravick, D.; Pordes, R.; Sergey, G.; Slimmer, D.; Streets, J.; White, V.

1991-06-01

326

Non-rigid reconstruction of the beating heart surface for minimally invasive cardiac surgery.  

PubMed

This paper presents a new method to reconstruct the beating heart surface based on the non-rigid structure from motion technique using preprocessed endoscopic images. First the images captured at the same phase within each heart cycle are automatically extracted from the original image sequence to reduce the dimension of the deformation subspace. Then the remaining residual non-rigid motion is restricted to lie within a low-dimensional subspace and a probabilistic model is used to recover the 3D structure and camera motion simultaneously. Outliers are removed iteratively based on the reprojection error, Missing data are also recovered with an Expectation Maximization algorithm. As a result the camera can move around the operation scene to build a 3D surface with a wide field-of-view for intra-operative procedures. The method has been evaluated with synthetic data, heart phantom data, and in vivo data from a da Vinci surgical system. PMID:20425968

Hu, Mingxing; Penney, Graeme P; Rueckert, Daniel; Edwards, Philip J; Bello, Fernando; Casula, Roberto; Figl, Michael; Hawkes, David J

2009-01-01

327

Robot-assisted surgery:--impact on gynaecological and pelvic floor reconstructive surgery.  

PubMed

The da Vinci Surgical System dominates robotic surgery, as the only robotic device to have FDA approval in gynaecology. The benefits of robot-assisted surgery include decreased length of stay, decreased blood loss and analgesic requirements. Ergonomic improvements allow the surgeon to operate with less risk of neck and back injury. Unfortunately the initial economic impact of purchasing and maintaining a robot are great but must be balanced with the potential savings from reduced length of stay and earlier return to normal activity. This review looks at the uses for the robot in both gynaecology and urogynaecology, assessing the efficacy of this modality compared to both straight stick (laparoscopy) and open procedures. We assess the benefits to both patient and surgeon from the available literature. Within the current economic environment we appraise the costs associated with the robot. PMID:22638668

O'Sullivan, O E; O'Reilly, B A

2012-05-26

328

Robotic radical prostatectomy in Australia: initial experience.  

PubMed

The purpose of this study is to describe the initial experience of robotic-assisted radical prostatectomy (RARP) in Australia. Since the installation of the daVinci system at the Australian Institute for Robotic Surgery, Epworth Hospital, Melbourne in December 2003, 275 robotic-assisted radical prostatectomies have been performed by two surgeons. A prospective database is compiled for each procedure including patient, operative and outcome details. We report on the initial learning curve, surgical technique and modifications, anaesthetic considerations and surgical results comparative to open radical prostatectomy in a single surgeons experience along with margin positivity rates for the first 200 cases of RARP. RARP is the single most frequent adaptation of robotic-assisted surgery with promising initial results. Increasing availability of this modality will inevitably give rise to further adaptations. We present the initial Australian experience. PMID:16552598

O'Malley, P J; Van Appledorn, S; Bouchier-Hayes, D M; Crowe, H; Costello, A J

2006-03-22

329

3D force control for robotic-assisted beating heart surgery based on viscoelastic tissue model.  

PubMed

Current cardiac surgery faces the challenging problem of heart beating motion even with the help of mechanical stabilizer which makes delicate operation on the heart surface difficult. Motion compensation methods for robotic-assisted beating heart surgery have been proposed recently in literature, but research on force control for such kind of surgery has hardly been reported. Moreover, the viscoelasticity property of the interaction between organ tissue and robotic instrument further complicates the force control design which is much easier in other applications by assuming the interaction model to be elastic (industry, stiff object manipulation, etc.). In this work, we present a three-dimensional force control method for robotic-assisted beating heart surgery taking into consideration of the viscoelastic interaction property. Performance studies based on our D2M2 robot and 3D heart beating motion information obtained through Da Vinci™ system are provided. PMID:22255963

Liu, Chao; Moreira, Pedro; Zemiti, Nabil; Poignet, Philippe

2011-01-01

330

Technical advances in robot-assisted laparoscopic radical prostatectomy.  

PubMed

Since it was introduced in 1999, the da Vinci Surgical System has become an integral tool in urologic surgery, specifically in the management of localized prostate cancer. The original technique of robot-assisted laparoscopic prostatectomy (RALP) was developed and standardized in 2000 at the Institut Mutualiste Monsouris. Since that time, the technique of RALP has undergone various modifications. The driving force behind the evolution of the RALP technique in the past decade has been based on efforts to improve upon the three main objectives of surgery, namely the 'trifecta' of cancer cure and the preservation of potency and of urinary continence. In this review, we aim to provide an update on the midterm oncologic outcomes of RALP and focus specifically on two technical modifications that have been introduced in an effort to optimize the outcomes of potency and earlier return of urinary continence. PMID:21789072

Turpen, Ryan; Atalah, Hany; Su, Li-Ming

2009-12-01

331

A Unique Instrumental Malfunction during Robotic Prostatectomy  

PubMed Central

Over the past decade, the introduction of robotics in the field of medicine has provided a new approach to patients requiring surgery, and both its advantages and disadvantages are currently under study by many groups worldwide. The use of robotics has especially been considered by the urological community as a treatment option in radical prostatectomy. The current case report is one in which the da Vinci Surgical System™, with fourth arm use was employed in radical prostatectomy. This case presents a unique occurrence in which a bolt of the Prograsper forcep became loose during an operation, leading to diminished device functionality and later impedance of its removal. A circumstance such as this has not previously been reported, so we introduce for other robotic surgeons our unique instrumental malfunction case during a robotic prostatectomy.

Park, Sung Yul; Ahn, Jenny Jin-Kyung; Jeong, Wooju; Ham, Won Sik

2010-01-01

332

Robotic-assisted partial nephrectomy: Has it come of age?  

PubMed Central

Surgical resection is the gold standard for the treatment of renal cell carcinoma, and partial nephrectomy (PN) is the treatment of choice for tumors smaller than 4 cm in size. A laparoscopic PN is a viable alternative to a traditional open PN, demonstrating good oncologic and functional outcomes. A laparoscopic PN is a challenging procedure, particularly performing intracorporeal suturing under the time constraints of warm ischemia. The introduction of the da Vinci surgical system (Intuitive Surgical Inc., Sunnyvale, CA) with wristed instruments and magnified, 3-dimensional vision may facilitate the technical challenges of a minimally invasive PN. The technique of robotic partial nephrectomy (RPN) is still evolving and a number of institutions have recently reported their results. In this article, we present a review of the literature and our technique for robotic PN using a transperitoneal approach.

Patel, Manish N.; Bhandari, Mahendra; Menon, Mani; Rogers, Craig G.

2009-01-01

333

The colour wheels of art, perception, science and physiology  

NASA Astrophysics Data System (ADS)

Colour is not the domain of any one discipline be it art, philosophy, psychology or science. Each discipline has its own colour wheel and this presentation examines the origins and philosophies behind the colour circles of Art, Perception, Science and Physiology (after image) with reference to Aristotle, Robert Boyle, Leonardo da Vinci, Goethe, Ewald Hering and Albert Munsell. The paper analyses and discusses the differences between the four colour wheels using the Natural Colour System® notation as the reference for hue (the position of colours within each of the colour wheels). Examination of the colour wheels shows the dominance of blue in the wheels of art, science and physiology particularly at the expense of green. This paper does not consider the three-dimensionality of colour space its goal was to review the hue of a colour with regard to its position on the respective colour wheels.

Harkness, Nick

2006-06-01

334

FPGA-based Radar Signal Processing for Automotive Driver Assistance System  

Microsoft Academic Search

Safety and comfort applications are addressed using driver assistance (DA) systems like adaptive cruise control (ACC) system using long range radar (LRR) or short range radar (SRR) or both. Novel waveforms and functionalities applied to next generation DA multi-sensor systems and their corresponding complex algorithms require advanced digital hardware supporting high computation rate and severe real-time constraints. In this paper,

Jean Saad; Amer Baghdadi; Frantz Bodereau

2009-01-01

335

Development of an Integrated Distribution Management System  

Microsoft Academic Search

This final report details the components, functionality, costs, schedule and benefits of developing an Integrated Distribution Management System (IDMS) for power distribution system operation. The Distribution Automation (DA) and Supervisory Control and Data Acquisition (SCADA) systems used by electric power companies to manage the distribution of electric power to retail energy consumers are vital components of the Nations critical infrastructure.

Schatz; Joe E

2010-01-01

336

Documentation Assistant: An Intelligent System for Documentation.  

National Technical Information Service (NTIS)

The purpose of this document is to describe a semi-automated system for the documentation of computer software; this system is called the Documentation Assistant (DA). To motivate this system, a general discussion of documentation issues and problems is i...

J. S. Dean B. P. McCune S. G. Rosenbaum

1985-01-01

337

Transoral robotic-assisted lingual tonsillectomy in the pediatric population.  

PubMed

IMPORTANCE Since technologic advances allow the use of robotic assistance in various surgical interventions performed to treat pediatric otolaryngology patients, the feasibility and outcomes of potential procedures must be assessed. OBJECTIVE To assess the feasibility and outcomes of robotic-assisted lingual tonsillectomy in the pediatric population. DESIGN, SETTING, AND PARTICIPANTS Retrospective medical record review in a tertiary care children's hospital of 16 pediatric patients who underwent robotic-assisted lingual tonsillectomy from March 1, 2011, through December 31, 2012. INTERVENTION All patients underwent robotic-assisted lingual tonsillectomy using the da Vinci Surgical System (Intuitive Surgical, Inc) at the Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center. MAIN OUTCOMES AND MEASURES Demographic data, comorbidities, robot docking time, operative time, estimated blood loss, and postoperative course, including complications in the immediate and longer-term postoperative period, were collected and analyzed. RESULTS All patients successfully underwent lingual tonsillectomy using the da Vinci Surgical System. Endotracheal intubation was performed in all patients and did not interfere with visualization of the oropharynx. Optimal retraction allowed visualization of pertinent structures and maximized transoral access. A significant learning curve from the first 5 surgical cases to subsequent cases with respect to robot docking time was observed (9 vs 3 minutes, respectively; P?

Leonardis, Rachel L; Duvvuri, Umamaheswar; Mehta, Deepak

2013-10-01

338

40 CFR 60.49Da - Emission monitoring.  

Code of Federal Regulations, 2010 CFR

...Subpart Da - Standards of Performance for Electric Utility Steam] [Sec. 60.49da...CONTINUED) STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES-- Standards of Performance for Electric Utility Steam Sec....

2009-07-01

339

Hot White Dwarf Luminosity Function, non-DA to DA Ratio, SDSS DR7: Possible Improvements  

NASA Astrophysics Data System (ADS)

Hot white dwarf luminosity functions (LF) have opened new possibilities for the analysis of the properties of WDs at the beginning of their evolution, when the hottest and the youngest objects enter WD cooling tracks. These new LFs allow the investigation of recent star formation rate and neutrino cooling, as well as determination of the DA to non-DA ratio. The latter can, in turn, give a clue about WD atmosphere transformations and chemical composition changes in the hottest WDs. However, the number of hot WDs is rather low, leading to large errors in the DA to non-DA ratio. Is a new SDSS WD catalog a solution to the problem? Some answers are given in this short review.

Krzesi?ski, J.

2013-01-01

340

DA PAISAGEM SONORA À PRODUÇÃO MUSICAL: Contribuições geográficas para o estudo da paisagem  

Microsoft Academic Search

Resumo: Diferentes definições do conceito de paisagem vêm sendo discutidas e empregadas na Geografia desde seu surgimento enquanto ciência. No entanto, ainda que alguns admitam a(s) dinâmica(s) existente(s) na paisagem, poucos são os que a encarem além do visual. Com isso, minimizam as possibilidades de ensino acerca da realidade, dificultando o re-conhecimento dos elementos constituintes da paisagem e de sua

MARCOS ALBERTO TORRES

341

A Day in the Life at DaVita Academy  

ERIC Educational Resources Information Center

|When a company name means "giving life," the bar for learning and development programs is held high. In this article, the author describes what it takes to graduate from DaVita Academy, the soft skills training program dialysis services company DaVita offers all its employees. DaVita's chief executive officer, Kent Thiry, states that the Academy…

Weinstein, Margery

2010-01-01

342

Jogo e brinquedo: reflexões a partir da teoria crítica  

Microsoft Academic Search

RESUMO: Este artigo de revisão bibliográfica tem como objetivo contribuir com a reflexão acerca do jogo e do brinquedo no campo da educação e busca, principalmente nos autores da Teoria Crítica, seus principais interlocutores, os subsídios necessários. Apresenta um pouco da história de alguns brinquedos e das relações do jogo com festas e rituais. Discute as mudanças que ocorreram em

Gildo Volpato

2002-01-01

343

Mesolimbic dopamine system in alcohol-preferring rats  

Microsoft Academic Search

The mesolimbic dopamine system of the brain, in particular the nucleus accumbens (Acb), is long known to be involved in reward behavior. When compared with the alcohol-nonpreferring NP rats, the alcohol-preferring P rats exhibit lower dopamine (DA) levels in the Acb as well as in other forebrain areas (20). In the present study, the DA innervation density, as determined by

F. C. Zhou; J. K. Zhang; L. Lumeng; T.-K. Li

1995-01-01

344

Endocannabinoid signaling system and brain reward: Emphasis on dopamine  

Microsoft Academic Search

The brain's reward circuitry consists of an “in series” circuit of dopaminergic (DA) neurons in the ventral tegmental area (VTA), nucleus accumbens (Acb), and that portion of the medial forebrain bundle (MFB) which links the VTA and Acb. Drugs which enhance brain reward (and have derivative addictive potential) have common actions on this core DA reward system and on animal

Eliot L. Gardner

2005-01-01

345

Electrosurgical injuries during robot assisted surgery: insights from the FDA MAUDE database  

NASA Astrophysics Data System (ADS)

Introduction: The da Vinci surgical system requires the use of electrosurgical instruments. The re-use of such instruments creates the potential for stray electrical currents from capacitive coupling and/or insulation failure with subsequent injury. The morbidity of such injuries may negate many of the benefits of minimally invasive surgery. We sought to evaluate the rate and nature of electrosurgical injury (ESI) associated with this device. Methods: The Manufacturer and User Facility Device Experience (MAUDE) database is administered by the US Food and Drug Administration (FDA) and reports adverse events related to medical devices in the United States. We analyzed all incidents in the context of robotic surgery between January 2001 and June 2011 to identify those related to the use of electrosurgery. Results: In the past decade, a total of 605 reports have been submitted to the FDA with regard to adverse events related to the da Vinci robotic surgical platform. Of these, 24 (3.9%) were related to potential or actual ESI. Nine out of the 24 cases (37.5%) resulted in additional surgical intervention for repair. There were 6 bowel injuries of which only one was recognized and managed intra-operatively. The remainder required laparotomy between 5 and 8 days after the initial robotic procedure. Additionally, there were 3 skin burns. The remaining cases required conservative management or resulted in no harm. Conclusion: ESI in the context of robotic surgery is uncommon but remains under-recognized and under-reported. Surgeons performing robot assisted surgery should be aware that ESI can occur with robotic instruments and vigilance for intra- and post-operative complications is paramount.

Fuller, Andrew; Vilos, George A.; Pautler, Stephen E.

2012-02-01

346

Robotic-assisted skull base surgery: preclinical study.  

PubMed

Abstract Objective and Study Design: To assess the feasibility of robotic-assisted skull base surgery, a preclincal cadaver study was conducted. Materials and Methods: The feasibility study was subdivided into three phases: Phase 1 (surgical corridor) entailed a review of the surgical access, Phase 2 (instrument configuration) entailed arrangements of the robotic instrument (da Vinci(®) Surgical System; Intuitive Surgical, Sunnyvale, CA) in relation to the surgical corridor and applied to a skull model, and Phase 3 was robotic-assisted skull base cadaver dissection. Results: Regarding the surgical corridor, the infratemporal area was accessed through a maxillary window, whereas the anterior skull base region was accessed through a combined single maxillary window and nasal corridor. Regarding instrument configuration, the camera was positioned above the two instrument arms, with both instrument arms angled at 30° to the camera axis with a flexed distal tip for the infratemporal skull base. For the anterior skull base, one of the robotic arms was inserted through the unilateral maxillary window, whereas the three-dimensional camera and the second arm were inserted through the nasal corridor. Regarding the robotic-assisted skull base cadaver dissection, we define the robotic set-up time in this study as the time required to move the robot into position, obtain adequate operative exposure, and place the robotic arms prior to the start of robotic dissection. The robotic set-up time for the anterior skull base dissection averaged 95 minutes, and that for pituitary resection was 61 minutes. The robotic set-up time for infratemporal dissection averaged 23 minutes. Operative time was 63.5 minutes. Robotic and endoscopic techniques can be combined during surgery. Conclusions: Robotic-assisted skull base surgery is feasible. The da Vinci instrument needs to be redesigned to be smaller and preferably with distal articulating tips, prior to clinical application of robotics to skull base surgery. PMID:24001158

Blanco, Ray Gervacio F; Boahene, Kofi

2013-09-01

347

Sounding Rocket Payload Recovery Systems.  

National Technical Information Service (NTIS)

The various systems for recovering sounding rocket payloads are discussed. Emphasis is placed on those used by the French space agency in Guiana. The two main problems are identified as: (1) absorbing the kinetic energy of the payload to prevent impact da...

J. Lerat R. Marguet

1972-01-01

348

Goldstone Radar Images of Near-Earth Asteroid 2012 DA14  

NASA Astrophysics Data System (ADS)

2012 DA14 made an extremely close approach within 0.00023 AU (0.09 lunar distances) on February 15, 2013. This was the closest encounter known in advance by a near-Earth asteroid with an absolute magnitude brighter than 25. We took advantage of this opportunity to image 2012 DA14 at Goldstone on February 16, 18, and 19 as the asteroid was receding from Earth. The imaging started at 00:46 UTC, slightly more than five hours after the closest approach, when the asteroid was at a distance of 0.00088 AU (0.34 lunar distances). The echoes were extraordinarily strong and we obtained some of the highest signal-to-noise ratios for any near-Earth asteroid ever observed at Goldstone. The images achieved resolutions as fine as 3.75 m x 0.00625 Hz that spatially resolve 2012 DA14 into a few dozen pixels; however, due to the diminutive dimensions of the asteroid, even this extremely high resolution is insufficient to show detailed surface features. The images indicate that 2012 DA14 is an asymmetric, angular, and elongated object with major axes of roughly 40 x 20 meters. The sequence of images obtained on February 16 spans 7.8 hours, during which the orientation of the asteroid appeared to complete close to one full rotation, suggesting that the rotation period is somewhat longer than ~8 hours. Radar speckle tracking with the Very Large Array and elements of the Very Long Baseline array show that 2012 DA14 has a relatively low obliquity and constrain the amplitude of any non-principal axis wobble after the flyby to be < 30 degrees. 2012 DA14 is among the smallest near-Earth asteroids ever spatially resolved by radar and it highlights the substantial scientific potential of the new chirp imaging system at Goldstone.

Benner, Lance A.; Brozovic, M.; Giorgini, J. D.; Jao, J. S.; Lee, C. G.; Busch, M. W.; Slade, M. A.

2013-10-01

349

An ISO 9001: 2000 Compliant Quality Management System for Data Integration in Data Warehouse Systems  

Microsoft Academic Search

In modern information systems, the topic of da- ta quality becomes more and more important due to increasing analysis demands. This holds es- pecially for data warehouse systems and simi- lar systems that provide data integrated from het- erogeneous sources. Although a large variety of extraction-transformation-loading tools support- ing data integration is available, there is still no process model defining

Holger Hinrichs; Thomas Aden

2001-01-01

350

The DEAR experiment on DA?NE  

NASA Astrophysics Data System (ADS)

DEAR is one of the first experiments at the new DA?NE ?-factory at the Laboratori Nazionali di Frascati dell'INFN. The objective of the DEAR experiment is to perform a precision measurement of the strong interaction shifts and widths of the K-series lines in kaonic hydrogen and the first observation of the same quantities in kaonic deuterium. The aim is to obtain a precise determination of the isospin-dependent kaon-nucleon scattering lengths which will represent a breakthrough in KN low-energy phenomenology and will allow us to determine the kaon-nucleon sigma terms. The sigma terms give a direct measurement of chiral symmetry breaking and are connected to the strangeness content of the proton. First results on background measurements with the DEAR NTP setup installed on DA?NE are reported.

Augsburger, M.; Beer, G.; Bianco, S.; Bragadireanu, A. M.; Bregant, M.; Breunlich, W. H.; Cargnelli, M.; Chatellard, D.; Curceanu (Petrascu), C.; Egger, J.-P.; Fabbri, F. L.; Gartner, B.; Guaraldo, C.; Hayano, R. S.; Iliescu, M.; Ishiwatari, T.; Ito, T. M.; Iwasaki, M.; King, R.; Knowles, P.; Koike, T.; Lauss, B.; Lucherini, V.; Marton, J.; Milotti, E.; Mulhauser, F.; Nakamura, S. N.; Ponta, T.; Sanderson, A. C.; Schaller, L. A.; Schellenberg, L.; Schneuwly, H.; Seki, R.; Tomono, D.; Yoneyama, T.; Zavattini, E.; Dear Collaboration

2001-04-01

351

A TEORIA DA METÁFORA CONCEPTUAL REVISITADA  

Microsoft Academic Search

RESUMO: Este estudo investiga a compreensão da metáfora em língua estrangeira. Selecionou-se expressões metafóricas em língua inglesa, a seguir, examinou-se os seus mapeamentos conceptuais (Lakoff e Johnson, 1980; Grady, 1997). Desenvolveu-se dois testes de múltipla escolha e solicitou-se que 118 participantes fizessem julgamentos dos enunciados metafóricos sem e com um pequeno contexto. Discutiremos o resultado dos testes para os enunciados

Luciane Corrêa FERREIRA

352

Generazione di mesoni da parte di fotoni  

Microsoft Academic Search

Riassunto  In relazione alle esperienze di Berkeley sulla generazione di mesoni da parte di fotoni, si calcolano nella prima approssimazione\\u000a della teoria delle perturbazioni (eg) le sezioni d'urto differenziali per il processo in questione; si fa uso della teoria pseudoscalare con accoppiamento pseudoscalare\\u000a e della teoria scalare con accoppiamento scalare. Al contrario che in lavori precedenti, nel calcolo qui sviluppato si

G. Morpurgo

1950-01-01

353

Generazione di mesoni da parte di fotoni  

Microsoft Academic Search

\\u000a Riassunto  In relazione alle esperienze di Berkeley sulla generazione di mesoni da parte di fotoni, si calcolano nella prima approssimazione\\u000a delia teoria delie perturbazioni (eg) le sezioni d’urto differenziali per il processo in questione; si fa uso delia teoria pseudoscalare con accoppiamento pseudoscalare\\u000a e delia teoria scalare con accoppiamento scalare. Al contrario che in lavori precedenti, nel calcolo qui sviluppato si

G. Morpurgo

1950-01-01

354

Diffusivity of sub-1,000 Da molecules in 40 nm silicon-based alumina pores  

Microsoft Academic Search

Porous anodic alumina has been of an increasing interest to applications of on-chip biosensors and bioseparations. However,\\u000a the characteristics of molecular diffusion in alumina nanopores have not been fully explored. Here, we have investigated an\\u000a ultra-thin freestanding alumina membrane fabricated on a silicon substrate as a new on-chip diffusion system. Sub-1,000 Da\\u000a molecules such as caffeine were diffused through alumina pores

Xingqun Jiang; Nirankar Mishra; James N. Turner; Michael G. Spencer

2008-01-01

355

A Novel Framework for Building Distributed Data Acquisition and Monitoring Systems  

Microsoft Academic Search

We propose a novel framework for building a distributed data acquisition and monitoring system. Our novel framework is mainly based on XML leverages and OPC (Openness, Productivity, and Connectivity) techni- ques. Correspondingly, our framework-based system allows easily aggregating more than the hundreds or thousands of the existing OPC DA (Data Access) products in use today with new OPC XML-DA products

Vu Van Tan; Dae-seung Yoo; Myeong-jae Yi

2007-01-01

356

Validation of the Delvotest SP NT DA. Performance Tested Method 011101.  

PubMed

Delvotest SP NT DA is designed to test milk for the presence of antibacterial substances, such as antibiotics. The test is made of an agar gel containing bacterial spores and a color indicator. The milk sample is added onto the agar gel, and the test is incubated at 64 degrees C. The principle of the test is based on the diffusion of possible inhibitory substances that may be present in the milk sample into agar. This reduces growth and acid production by the test organism, and delays or prevents the agar from changing color from purple to yellow. The Delvotest Accelerator is an automated system in which the plates containing the milk to be analyzed are placed for incubation. The Accelerator automatically detects the end of the incubation and reads the results. A sample containing antibiotic will be noted as "positive." A sample without antibiotics or with antibiotics at concentrations below detection level will be noted as "negative." The present report includes all technical details about the Delvotest SP NT DA, and the results of the validation study. The validation study demonstrates that the Delvotest SP NT DA conforms to the product performance claims and confirms the robustness of the test. The Delvotest SP NT DA is, therefore, granted Performance Tested Method certification. PMID:22468368

Hennart, Stephen L A; Faragher, John

357

New paleomagnetic constraints on the extrusion of Indochina: Late Cretaceous results from the Song Da terrane, northern Vietnam  

NASA Astrophysics Data System (ADS)

Samples were collected for paleomagnetic investigations from the Upper Cretaceous Yen Chau Formation in the Song Da terrane (21.7°N, 103.9°E) bounded by the Ailao Shan-Red River fault system and Song Ma fault, in an attempt to examine extrusion tectonics of East Asia. Primary nature of the high-temperature (600-690 °C) component of magnetization from 13 sites is supported by a positive fold test. The tectonic corrected data provides the characteristic Late Cretaceous paleomagnetic direction for the Song Da terrane ( D=6.4°, I=32.0° with ?95=8.5°, N=13 sites), corresponding to a paleopole lying at 82.9°N, 220.7°E ( A95=6.9°). Comparison with coeval paleomagnetic poles for the neighboring tectonic blocks indicates no latitudinal translation of the Son Da terrane with respect to the South China Block, whereas the Shan-Thai Block and the southern part of the Indochina Block revealed a southward displacement of 10.5±9.5° in latitude with respect to the Song Da terrane. We conclude that the southeastern segment of the Ailao Shan-Red River fault system to the east of the Dien Bien Phu fault is not a demarcation of the extruded Indochina Peninsula. The Indochina Block extruded probably along some faults between the Song Da terrane and the Khorat Plateau.

Takemoto, Kazuhiro; Halim, Nadir; Otofuji, Yo-ichiro; Van Tri, Tran; Van De, Le; Hada, Shigeki

2005-01-01

358

Packet Telecommand. System Performance Assessment Study.  

National Technical Information Service (NTIS)

The analysis and definition of the on-board segment of a packet telecommand system and the design, manufacturing, and test of a decoder and a central terminal unit (CTU) to handle the specified protocols are described. The telecommand system provides a da...

B. Linder P. Appelquist M. Bonfre T. Hult M. Nilsson

1987-01-01

359

AVALIAÇÃO DO ESTADO QUÍMICO E ECOLÓGICO DOS CORPOS D' ÁGUA SOB O ENFOQUE DA NOVA DIRETRIZ DA ÁGUA DA UNIÃO EUROPÉIA  

Microsoft Academic Search

Desde os anos 90 existe um esforço da União Européia em promover a proteção ecológica dos corpos d'água. Com a nova Diretriz da Água do Parlamento Europeu e do Conselho, de 23 de Outubro de 2000, pela primeira vez, uma orientação ecológica foi atingida na União Européia. Várias ações estão sendo implementadas, dentre elas ressalta-se o estabelecimento de um plano

Alessandra Maciel; Maria do Carmo Sobral; Günter Gunkel

360

Design of D-?-A type photoacid generators for high efficiency excitation at 405 nm and 800 nm.  

PubMed

New sulfonium salts with diphenylamino asymmetrically substituted stilbene as a D-?-A conjugated system have been synthesized. The resulting photoacid generators exhibit a highly efficient acid photogeneration process by either one-photon 405 nm or two-photon 800 nm excitation. PMID:23939219

Jin, Ming; Xu, Haoran; Hong, Hong; Malval, Jean-Pierre; Zhang, Yuan; Ren, Aimin; Wan, Decheng; Pu, Hongting

2013-08-27

361

Scl 70 autoantibodies from scleroderma patients recognize a 95 kDa protein identified as DNA topoisomerase I  

Microsoft Academic Search

Sera of patients suffering from the autoimmune disease progressive systemic sclerosis (PSS) are known to contain autoantibodies which have been reported to recognize a 70 kDa antigenic protein, designated the Scl 70 antigen. By immunoblotting of nuclear extracts from HeLa cells with sera from scleroderma patients we observed that the size of the antigen present in such cells depends on

Hans-Herbert Guldner; Carin Szostecki; Hans-Peter Vosberg; Heinz-Jiirgen Lakomek; Edward Penner; Friedlinde A. Bautz

1986-01-01

362

The transmembrane form of tumor necrosis factor is the prime activating ligand of the 80 kDa tumor necrosis factor receptor  

Microsoft Academic Search

The 60 kDa tumor necrosis factor receptor (TNFR60) is regarded as the major signal transducer of TNF-induced cellular responses, whereas the signal capacity and role of the 80 kDa TNFR (TNFR80) remain largely undefined. We show here that the transmembrane form of TNF is superior to soluble TNF in activating TNFR80 in various systems such as T cell activation, thymocyte

Matthias Grell; Eleni Douni; Harald Wajant; Matthias Löhden; Matthias Clauss; Beate Maxeiner; Spiros Georgopoulos; Werner Lesslauer; George Kollias; Klaus Pfizenmaier; Peter Scheurich

1995-01-01

363

A Regional Energy Information System for Minnesota: A Preliminary Design.  

National Technical Information Service (NTIS)

A state's (Minnesota's) energy system, with its socio-economic plans that take energy constraints into consideration, is reviewed for policy makers. Four types of data, (1) energy supply/distribution/consumption data, (2) demographic data, (3) economic da...

N. L. Chervany J. D. Naumann R. Krishnan D. Quillin J. Schmitt

1975-01-01

364

Locally formed dopamine modulates renal Na-Pi co-transport through DA1 and DA2 receptors.  

PubMed Central

The involvement of dopamine (DA) receptor subtypes in regulation of renal phosphate transport by DA, either exogenous or locally synthesized from L-dihydroxyphenylalanine (L-dopa) was evaluated in opossum kidney (OK) cells with proximal tubular phenotype. DA synthesis from L-dopa by OK cells was abolished by carbidopa and benserazide, two dissimilar inhibitors of aromatic L-amino acid decarboxylase. L-Dopa stimulated cyclic AMP generation and inhibited Na-dependent Pi uptake, and these effects were abolished by carbidopa and benserazide. The effects of L-dopa or DA on cyclic AMP generation and on Na-Pi co-transport were mimicked by SKF 38393, a DA1 receptor agonist, and were potentiated by S-sulpiride, a DA2 receptor antagonist. Bromocriptine, a DA2 receptor agonist, blunted in a pertussis toxin-dependent manner parathyroid hormone (PTH)-induced cyclic AMP generation and inhibition of Pi uptake. In contrast with PTH, neither L-dopa nor DA affected significantly the cytosolic calcium concentration. These results support the involvement of DA1 and DA2 receptors, positively and negatively coupled into adenylate cyclase respectively, in modulation of renal phosphate transport.

Perrichot, R; Garcia-Ocana, A; Couette, S; Comoy, E; Amiel, C; Friedlander, G

1995-01-01

365

DA{phi}NE beam instrumentation  

SciTech Connect

DA{phi}NE, the Frascati {phi}-Factory, is now under commissioning. The accelerator complex is composed of a linac, an accumulator-damping ring, and two separate main rings, one for electrons and the other for positrons, with two interaction regions in which the experiments will be placed. In order to achieve the luminosity goal, high performance instrumentation and beam diagnostics have been installed. Some of the relevant beam measurements performed are: beam emittance, transverse and longitudinal dimensions, beam positions and tunes, overlap in the interaction points, and luminosity. An overview of the diagnostic instrumentation of the accelerator complex is given together with measurement examples and discussion of operational experiences.

Ghigo, A.; Biscari, C.; Coiro, O.; Pirro, G. Di; Drago, A.; Gallo, A.; Marcellini, F.; Mazzitelli, G.; Milardi, C.; Sannibale, F.; Serio, M.; Stecchi, A.; Stella, A.; Vignola, G.; Zobov, M. [INFN Laboratori Nazionali di Frascati, 00044 Frascati, Roma (Italy)

1998-12-10

366

Melhora da Produtividade no uso do Prontuário Eletrônico do Paciente Utilizando a Engenharia da Usabilidade  

Microsoft Academic Search

Currently, to facilitate the storage and search of patients information medical institutions make use of Electr onic Patient Record (EPR). The first version of HUSM Cardiac Unit EPR wasn't p lanned with techniques of Usability Engineering, generating mistakes on da ta transcription. To minimize its mistakes and improve the productivity of EPR use, this work apply the principles of the

Eliana Zen; Raul Ceretta Nunes; Maria Angélica Figueiredo Oliveira; Silva Fonseca; Sérgio Nunes Pereira

367

i-Farm: A exploração agrícola inteligente da sociedade da informação e do conhecimento  

Microsoft Academic Search

Resumo A evolução que se tem vindo a observar no campo das tecnologias de informação e comunicação, em particular no que se refere à computação móvel e da monitorização remota, vem colocar um desafio extremamente interessante ao sector agrícola. Esta nova realidade coloca o conhecimento agronómico no centro das atenções, uma vez que estas tecnologias não fazem mais do que

Miguel de Castro Neto; Luís Miguel Fernandes

368

Avaliação da função motora em crianças com distrofia muscular congênita com deficiência da merosina  

Microsoft Academic Search

RESUMO - A distrofia muscular congênita (DMC) compõe um grupo de miopatias caracterizadas por hipo- tonia e fraqueza muscular notadas até o primeiro ano de vida. Em torno de 40% a 50% dos casos são decor- rentes de deficiência primária da proteína merosina (DM), os quais apresentam um fenótipo mais homogêneo, com grave comprometimento motor e respiratório. Foram avaliadas neste

Fernanda M. Rocco; Fernanda H. Gianini Luz; Alexsander Junquera Rossato; Antônio Carlos Fernandes; Acary S. B. Oliveira; Javier Toledano Beteta; Edmar Zanoteli

2005-01-01

369

Systeme multifonctions. (Multifunction system).  

National Technical Information Service (NTIS)

The development, the characteristics and the applications of a multifunction system are presented. The system is used on the RBES laboratory pipes, at Marcoule. The system was developed in order to allow, without time loss, the modification of the circuit...

J. Wauthier R. Fiori

1990-01-01

370

Espessura Endometrial como Fator Orientador do Tratamento Clínico da Gravidez Tubária Íntegra  

Microsoft Academic Search

Objetivos: avaliar a contribuição da medida da espessura endometrial como fator orientador do tratamento clínico da gravidez tubária íntegra. Métodos: estudo observacional longitudinal, no qual se avaliou a maior medida da espessura endometrial em milímetros, no eixo longitudinal uterino, por meio da ultra-sonografia transvaginal, parâmetro que foi correlacionado com a evolução dos casos. Foram incluídas no estudo 181 pacientes que

Roberto da Costa Soares; Júlio Elito Junior; Kyung Koo Han; Luiz Camano

2002-01-01

371

The 1.17 Day Orbit of the Double-degenerate (DA+DQ) NLTT 16249  

NASA Astrophysics Data System (ADS)

New spectroscopic observations show that the double-degenerate system NLTT 16249 is in a close orbit (a = 5.6 ± 0.3 R ?) with a period of 1.17 days. The total mass of the system is estimated between 1.47 and 2.04 M ? but it is not expected to merge within a Hubble timescale (t merge ? 1011 yr). Vennes & Kawka originally identified the system because of the peculiar composite hydrogen (DA class) and molecular (C2-DQ class and CN) spectra and the new observations establish this system as the first DA plus DQ close double degenerate. Also, the DQ component was the first of its class to show nitrogen dredged up from the core in its atmosphere. The star may be viewed as the first known DQ descendant of the born-again PG1159 stars. Alternatively, the presence of nitrogen may be the result of past interactions and truncated evolution in a close binary system. Based on observations made with ESO telescopes at the La Silla Paranal Observatory under program ID 86.D-0562.

Vennes, S.; Kawka, A.; O'Toole, S. J.; Thorstensen, J. R.

2012-09-01

372

A photospheric metal line profile analysis of hot DA white dwarfs with circumstellar material  

NASA Astrophysics Data System (ADS)

Some hot DA white dwarfs have circumstellar high ion absorption features in their spectra, in addition to those originating in the photosphere. In many cases, the line profiles of these absorbing components are unresolved. Given the importance of the atmospheric composition of white dwarfs to studies of stellar evolution, extra-solar planetary systems and the interstellar medium, we examine the effect of including circumstellar line profiles in the abundance estimates of photospheric metals in six DA stars. The photospheric C and Si abundances are reduced in five cases where the circumstellar contamination is strong, though the relative weakness of the circumstellar Si iv absorption introduces minimal contamination, resulting in a small change in abundance. The inability of previous, approximate models to reproduce the photospheric line profiles here demonstrates the need for a technique that accounts for the physical line profiles of both the circumstellar and photospheric lines when modelling these blended absorption features.

Dickinson, N. J.; Barstow, M. A.; Welsh, B. Y.

2013-01-01

373

Immunological characterization of heterochromatin protein p25? autoantibodies and relationship with centromere autoantibodies and pulmonary fibrosis in systemic scleroderma  

Microsoft Academic Search

Anticentromere antibodies (ACA) are immunological markers for the subset of systemic scleroderma with the symptoms calcinosis\\u000a cutis, Raynaud’s phenomenon, esophageal dysfunction, sclerodactyly, and telangiectasia (CREST). In western blotting, some\\u000a ACA-positive sera also recognize a doublet of 23 kDa (p23) and 25 kDa (p25) in addition to centromere protein antigens A (17 kDa),\\u000a B (80 kDa), and C (140 kDa). Two forms of p25 have been

Kiyoshi Furuta; Bernhard Hildebrandt; Sayako Matsuoka; Kendo Kiyosawa; Georg Reimer; Christoph Luderschmidt; Edward K. L. Chan; E. M. Tan

1998-01-01

374

Pressure Equilibrium and Jump Study on Unfolding of 23-kDa Protein from Spinach Photosystem II  

PubMed Central

Pressure-induced unfolding of 23-kDa protein from spinach photosystem II has been systematically investigated at various experimental conditions. Thermodynamic equilibrium studies indicate that the protein is very sensitive to pressure. At 20°C and pH 5.5, 23-kDa protein shows a reversible two-state unfolding transition under pressure with a midpoint near 160 MPa, which is much lower than most natural proteins studied to date. The free energy (?Gu) and volume change (?Vu) for the unfolding are 5.9 kcal/mol and ?160 ml/mol, respectively. It was found that NaCl and sucrose significantly stabilize the protein from unfolding and the stabilization is associated not only with an increase in ?Gu but also with a decrease in ?Vu. The pressure-jump studies of 23-kDa protein reveal a negative activation volume for unfolding (?66.2 ml/mol) and a positive activation volume for refolding (84.1 ml/mol), indicating that, in terms of system volume, the protein transition state lies between the folded and unfolded states. Examination of the temperature effect on the unfolding kinetics indicates that the thermal expansibility of the transition state and the unfolded state of 23-kDa protein are closer to each other and they are larger than that of the native state. The diverse pressure-refolding pathways of 23-kDa protein in some conditions were revealed in pressure-jump kinetics.

Tan, Cui-Yan; Xu, Chun-He; Wong, Jun; Shen, Jian-Ren; Sakuma, Shinsuke; Yamamoto, Yasusi; Lange, Reinhard; Balny, Claude; Ruan, Kang-Cheng

2005-01-01

375

Defining a novel 75-kDa phosphoprotein associated with SS-A/Ro and identification of distinct human autoantibodies  

PubMed Central

Mothers of children with neonatal lupus erythematosus (NLE) and heart block, as well as patients with Sjögren’s syndrome (SS) and systemic lupus erythematosus, have serum autoantibodies that recognize SS-A/Ro autoantigens including the 60-kDa ribonucleoprotein. By yeast 2-hybrid screening, we identified a novel 75-kDa protein (pp75) that interacts with the carboxyl 70% of 60-kDa SS-A/Ro. The specificity of interaction was confirmed using mammalian 2-hybrid and chemical crosslinking studies. Immunoprecipitation with radiolabeled HeLa cell extracts showed that pp75 was phosphorylated and associated with 2 other phosphoproteins of 64 kDa. In Northern blot analysis, pp75 was expressed in all tissues analyzed; the highest expression was in the human heart. Based on immunofluorescence of transfected HeLa cells, pp75 is localized predominantly in the cytoplasm, an observation confirmed by immunohistochemistry in untransfected cells. Based on Western blot and ELISA assays, sera from 14 of 84 mothers of children with NLE recognized pp75, including 1 mother in whom anti–SS-A/Ro antibodies were not detected. In addition, sera from 5 of 80 patients with SS were positive for anti-pp75 antibody. Identification of molecular partners is a first step toward elucidating the functions and possible involvement in pathogenesis of long-recognized autoantigens such as 60-kDa SS-A/Ro, which are at present poorly understood.

Wang, Dunrui; Buyon, Jill P.; Zhu, Weiguo; Chan, Edward K.L.

1999-01-01

376

ANÁLISE DA MOBILIDADE URBANA SUSTENTÁVEL UTILIZANDO ESTATÍSTICA ESPACIAL  

Microsoft Academic Search

Resumo Neste trabalho apresenta-se uma análise espacial da Mobilidade Sustentável (MS) dentro de uma região urbana. Para tanto, foram utilizados indicad ores de MS a partir dos quais foram definidos os índices de mobilidade sustentável (IMS) de cada sub-região (setores) dentro da região de análise. Com base nestes índices foram utilizadas f erramentas de estatística espacial que permitiram avaliar a

Denise de Miranda; Silva Correia; Vânia Barcellos; Gouvêa Campos

377

1991 DA: An Asteroid in a Bizarre Orbit.  

National Technical Information Service (NTIS)

Asteroidal object 1991 DA has an orbit of high inclination, crossing the planets from Mars to Uranus. This is unique for an asteroid, but not unusual for a comet of the Halley-type: it therefore seems likely that 1991 DA is an extinct or dormant comet. Pr...

D. Steel R. H. Mcnaught D. Asher

1992-01-01

378

Uma leitura bergsoniana da Biologia da Cognição: implicações para a educação A bergsonian reading of the Biology of Cognition: Implications to the education  

Microsoft Academic Search

RESUMO: A partir da identifi cação de fortes tendências paradigmáticas em direção à complexidade, defi nida aqui como uma dinâmica de imbricamento de todas as dimensões da realidade, a autora destaca a teoria da Biologia da Cognição de Humberto Maturana e Francisco Varela como um conjunto de pressupostos fundamentais nessa nova construção. Essa importância é devida principalmente aos pressupostos revolucionários

Nize Maria Campos Pellanda

379

Study on Electrical Digital Simulation System Following IEC61850  

Microsoft Academic Search

Power system real-time digital simulation system, which is widely used in China, plays an important role in stability analysis, security assessment, relay protection equipments test, etc. With electronic transformers, D\\/A conversion and power amplification are no longer needed, output data by simulation software can be directly sampled. The schematic diagram of the new digital simulation system with electronic transducer is

Gao Guangling; Pan Zhencun; Gao Houlei; Gao Zhanjun; Cong Wei; Pan Xianghua

2009-01-01

380

DISTRIBUTED CONTROL AND DA FOR ATLAS  

SciTech Connect

The control system for the Atlas pulsed power generator being built at Los Alamos National Laboratory will utilize a significant level of distributed control. Other principal design characteristics include noise immunity, modularity and use of commercial products wherever possible. The data acquisition system is tightly coordinated with the control system. Both share a common database server and a fiber-optic ethernet communications backbone.

D. SCUDDER; ET AL

1999-05-01

381

Diagonally switchable 4-cycle systems  

Microsoft Academic Search

A diagonally switchable 4-cycle system of order n, briefly DS4CS(n), is a 4-cycle system in which by replacing each 4-cycle (a,b,c,d) cover- ing pairs ab,bc,cd,da by either of the 4-cycles (a,c,b,d) or (a,b,d,c) another 4-cycle system is obtained. We prove that a DS4CS(n) exists if and only if n 1 (mod 8), n 17 with the possible exception of n

Peter Adams; Darryn Bryant; Mike Grannell; Terry Griggs

382

The neuroanatomical plates of Guido da Vigevano.  

PubMed

Guido da Vigevano was an Italian physician and engineer who lived in the 13th and 14th centuries. He was the first scientist who used pictures to illustrate his anatomical descriptions, developing for the first time a close relationship between anatomical studies and artistic drawings. This was further developed in the Renaissance. In his textbook Anathomia are displayed six plates showing for the first time neuroanatomical structures and techniques: dissection of the head by means of trephination, and depictions of the meninges, cerebrum, and spinal cord. On the surface of the brain painting it is possible to recognize a vague patterning of cortical convolutions. Ventricles are also described and shown. This book constituted the first attempt in the history of neuroscience to illustrate an anatomical description with schematic pictures to achieve a better understanding of such complex structures. PMID:17961048

Di Ieva, Antonio; Tschabitscher, Manfred; Prada, Francesco; Gaetani, Paolo; Aimar, Enrico; Pisano, Patrizia; Levi, Daniel; Nicassio, Nicola; Serra, Salvatore; Tancioni, Flavio; Arosio, Massimo; Rodriguez y Baena, Riccardo

2007-01-01

383

40 CFR 60.50Da - Compliance determination procedures and methods.  

Code of Federal Regulations, 2010 CFR

...Subpart Da - Standards of Performance for Electric Utility Steam] [Sec. 60.50da...CONTINUED) STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES-- Standards of Performance for Electric Utility Steam Sec. 60.50Da...

2009-07-01

384

Comparação da Infiltração Marginal na Obturação Retrógra- da Comparation of the Marginal Infiltration in the Retrograde Obtu- ration  

Microsoft Academic Search

Key-words Este trabalho teve o objetivo de avaliar, comparativamente, a capacidade seladora do cimento de N-Rickert, quando inserido em dois preparos cavitários apicais distintos, tendo sido utilizado como substância evidenciadora da infiltração o corante Azul de Metileno a 2%. Foram utilizados 60 Incisivos Superiores, oriundos do Banco de dentes da Faculdade de Odontologia de Pernambuco, conforme aprovação do comitê de

Fernanda Braga Gomes; Diógenes Ferreira Alves; Roberto Alves dos Santos

2008-01-01

385

Lessons and Challenges from a Culture and Gender Responsive School-Based Youth Program: Project Da Da Kidogo.  

ERIC Educational Resources Information Center

|Project Da Da Kidogo is an innovative and culturally specific program based on the African proverb "It takes an entire village to raise a child." The program provides a wide range of services to meet the academic, social, cultural, and recreational needs of the young African American women in the community. The program focuses on peer group,…

Woo, Annie

386

Flutuações da temperatura eletrônica em NGC 2438 e NGC 2440  

NASA Astrophysics Data System (ADS)

Tradicionalmente, as abundâncias em nebulosas planetárias e regiões HII têm sido obtidas de linhas excitadas colisionalmente, as quais são fortemente dependentes da temperatura eletrônica. Alternativamente, as abundâncias químicas podem ser determinadas de linhas de recombinação, as quais são quase independententes da temperatura eletrônica. Entretanto, consideráveis diferenças têm sido encontradas entre estes dois métodos. Estas discrepâncias têm sido atribuídas às flutuações espaciais da temperatura eletrônica. Entretanto, as magnitudes necessárias de flutuações de temperatura eletrônica são consideravelmente mais altas do que aquelas preditas pelos modelos padrões de fotoionização e os mecânismos físicos que poderiam explicar as grandes flutuações de temperatura são desconhecidas. Desta forma, o estudo de variações da temperatura eletrônica em regiões HII e nebulosas planetárias tem ganho um renovado interesse. Neste trabalho apresentamos os resultados preliminares de um estudo observacional sobre variações internas da temperatura eletrônica nas nebulosas planetárias NGC 2440 e NGC 2438. Analisamos dados espectrofotométricos de fenda longa, com alta razão sinal-ruído, na faixa de 3300-6800 Å, com o espectrógrafo Cassegrain Boller & Chivens acoplado ao telescópio de 1.52 m do European Southern Observatory (ESO). Temperaturas eletrônicas foram derivadas da razão [OIII](l4959+l5007)/l4363 em diferentes posições em cada nebulosa planetária. Flutuações da temperatura eletrônica foram detectadas e suas magnitudes foram estimadas em NGC 2440 e NGC 2438.

Krabbe, A. C.; Copetti, M. V. F.

2003-08-01

387

Regulation of Cortical Functions by the Central Noradrenergic System: Emerging Properties from an Old Friend  

Microsoft Academic Search

(VTA)-dopamine (DA) systems are two important brainstem neuromodulatory ascending pathways with a widespread cortical distribution.\\u000a Historically, the NE system has been implicated in arousal whereas DA signals have been linked to reward and motivation. In\\u000a addition to this early interpretation, recent findings indicate that the NE system also play an important role in the control\\u000a of complex behaviors (Devilbiss and

Marco Atzori; Humberto Salgado; Kuei-Yuan Tseng

388

On-farm system performance in the Maricopa-Stanfield Irrigation and Drainage District area  

Microsoft Academic Search

A detailed Diagnostic Analysis (DA) was performed on an irrigation district in Central Arizona as part of a Management Improvement Program (MIP). The DA was conduc- ted by an interdisciplinary team who focused their findings on performance of the irrigated agricultural system, on- and off-farm, rather than on disciplines. This paper reports on the findings related to on-farm management. Specific

A. J. CLEMMENS; A. R. DEDRICK; W. CLYMA; R. E. WARE

2000-01-01

389

O Linux e a perspectiva da dádiva  

Microsoft Academic Search

This work's goal is to analyze the appearance and consolidation of the Linux operational system in a context marked by the hegemony of commercial operational systems, taking the Windows\\/Microsoft as the paradigmatic example. The creator of Linux chose to make it open-source and offer it free of charge, in the Internet. Since then, people from the various parts of the

Renata Apgaua

2004-01-01

390

Augmenting system reliability analyses with observation priors  

Microsoft Academic Search

Occasionally, a system may fail a test without an obvious component being at fault. Instead, experts may know that at least one of a set of components has failed, but there is uncertainty about which members in the set were the actual failures. When no further information is available, this missing data may be imputed using standard data augmentation (DA).

Earl Lawrence; Christine Anderson-cook

2009-01-01

391

Circumstellar features in hot DA white dwarfs  

NASA Astrophysics Data System (ADS)

We present a phenomenological study of highly ionized, non-photospheric absorption features in high spectral resolution vacuum ultraviolet spectra of 23 hot DA white dwarfs. Prior to this study, four of the survey objects (Feige 24, REJ 0457-281, G191-B2B and REJ 1614-085) were known to possess these features. We find four new objects with multiple components in one or more of the principal resonance lines: REJ 1738+665, Ton 021, REJ 0558-373 and WD 2218+706. A fifth object, REJ 2156-546, also shows some evidence of multiple components, though further observations are required to confirm the detection. We discuss possible origins for these features including ionization of the local interstellar environment, the presence of material inside the gravitational well of the white dwarf, mass loss in a stellar wind and the existence of material in an ancient planetary nebula around the star. We propose ionization of the local interstellar medium as the origin of these features in G191-B2B and REJ 1738+665, and demonstrate the need for higher-resolution spectroscopy of the sample, to detect multiple interstellar medium velocity components and to identify circumstellar features that may lie close to the photospheric velocity.

Bannister, N. P.; Barstow, M. A.; Holberg, J. B.; Bruhweiler, F. C.

2003-05-01

392

[AnaConDa as last resort treatment. Case report of a chronic obstructive pulmonary disease].  

PubMed

Treatment of patients suffering from decompensated chronic pulmonary disease (COPD) not responding to pharmacological therapy is still a major challenge in intensive care medicine. Administration of volatile anaesthetics may be a therapy of last resort in these cases. We report on a 65-year-old woman suffering from exacerbated COPD, who could not be sufficiently ventilated despite comprehensive pharmacological therapy. In order to administer a volatile anaesthetic in the ICU, we employed the "Anaesthetic Conserving Device" (AnaConDa) consisting of a vaporizer chamber embedded in a charcoal filter system. With this device, every standard intensive care ventilator can be used to deliver volatile anaesthetics in a safe and economic manner. The AnaConDa converts the open breathing system of the intensive care ventilator into a de facto half-closed system. The very low pulmonary compliance of the patient increased dramatically after administration of 0.75 vol% halothane for 48 h (27 vs. 150 ml/mbar). Elimination of CO(2) was improved and weaning from controlled ventilation was achieved. After surgical removal of a pulmonary abscess and a total of 78 days of intensive care therapy, the patient was discharged in good health. PMID:17375268

Nickel, E A; Benken, I; Bartels, U; Voelckel, W G; Quintel, M

2007-06-01

393

Design of test-control system based on MCU for variable speed hydraulic system  

Microsoft Academic Search

Aiming at variable speed hydraulic compositive test stand, this paper designed the test-control system based on Microcontroller Unit (MCU), determined hardware composition of the test-control system and connection circuit of every part. The test-control system can acomplish multi-channel signal acquisition, keyboard input and realtime display of measured parameter. With the D\\/A output channel, it can realize open or closed loop

Tianhao Peng; Xiaosong Hao; Jiadong Liu; Meisheng Yang

2011-01-01

394

Nucleus Accumbens-Derived GDNF is a Retrograde Enhancer of Dopaminergic Tone in the Mesocorticolimbic System  

PubMed Central

Spontaneous firing of ventral tegmental area (VTA) dopamine (DA) neurons provides ambient levels of DA in target areas such as the nucleus accumbens (NAc) and the prefrontal cortex (PFC). Here we report that the glial cell line-derived neurotrophic factor (GDNF), produced in one target region, the NAc, is retrogradely transported by DA neurons to the VTA where the growth factor positively regulate the spontaneous firing activity of both NAc- and PFC-projecting DA neurons in a mechanism that requires the activation of the mitogen-activated protein kinase (MAPK) pathway. We further show that the consequence of GDNF-mediated activation of the MAPK signaling cascade in the VTA is an increase in DA overflow in the NAc. Together, these results demonstrate that NA-produced GDNF serves as a retrograde enhancer that upregulates the activity of the mesocorticolimbic DA system.

Wang, Jun; Carnicella, Sebastien; Ahmadiantehrani, Somayeh; He, Dao-Yao; Barak, Segev; Kharazia, Viktor; Ben Hamida, Sami; Zapata, Agustin; Shippenberg, Toni S.; Ron, Dorit

2010-01-01

395

[The pharmacokinetic effect of haloperidol on DA receptors].  

PubMed

There is increasing evidence that the metabolism of haloperidol is of major significance in the action of the drug. The metabolism of haloperidol is quite simple. It keeps only typical oxidative metabolic pathway. Despite of the existing knowledge of such pathways we still do not know the exact fate of the administered compound in the serum and urine. The aim of the study was the investigation of the influence of haloperidol and its oxidative forms on D(A) and its compounds in serum. The 12,0 hour investigation demonstrated a protective effect on D(A) activity. The D(A) synthesis rate constant was increased to about the same level by GBL as well as by haloperidol. Therefore, the differences between the two regions in the reactions to the drugs to a large extent could be explained by a high and low synthesis of D(A), under controlled conditions in the olfactory tubercle and the corpus striatum. PMID:15855705

Giorgobiani, I B; Kitiashvili, S A

2005-03-01

396

Thirty-Five New Pulsating DA White Dwarf Stars  

Microsoft Academic Search

We present 35 new pulsating DA (hydrogen atmosphere) white dwarf stars discovered from the Sloan Digital Sky Survey (SDSS) and the Hamburg Quasar Survey (HQS). We have acquired high-speed time series photometry of preselected DA white dwarfs with a prime focus CCD photometer on the 2.1 m telescope at McDonald Observatory over 15 months. We selected these stars on the

F. Mullally; R. E. Nather; D. E. Winget; Ted von Hippel; S. J. Kleinman; Atsuko Nitta; Jurek Krzesinski; S. O. Kepler; A. Kanaan; D. Koester; D. J. Sullivan; D. Homeier; S. E. Thompson; D. Reaves; C. Cotter; D. Slaughter; J. Brinkmann

2004-01-01

397

40 CFR 60.41Da - Definitions.  

Code of Federal Regulations, 2010 CFR

...one or more electric power interconnections to the...sales to the utility power distribution system minus purchased power on a calendar year basis...combustion engines, gas turbines, nuclear units, hydroelectric units, and all...

2009-07-01

398

40 CFR 60.41Da - Definitions.  

Code of Federal Regulations, 2010 CFR

...one or more electric power interconnections to the...sales to the utility power distribution system minus purchased power on a calendar year basis...combustion engines, gas turbines, nuclear units, hydroelectric units, and all...

2010-07-01

399

Hasty?yurv?da--a complete treatise on elephants.  

PubMed

Ayurv?da, the oldest existing medical science of India, which is not only responsible for the health of human beings but also, plays an important in Veterinary sciences. In India, history of traditional Veterinary medicine dates back to the era of Mah?bh?rata i.e.5000 B.C., recorded in the form of "Nakula Samhhit?". Hast?yurv?da is a treatise on elephants, Palk?pya wrote this Samhit?. The present book is available as a complete Samhit?, edited by Pandit Shivadutta Sharma. Hast?yurv?da was printed at Anand??rama press in 1894. Hast?yurv?da has 160 Adhy?y?s. This Samhit? is based on fundamental principles of Ayurv?da, containing all aspects of Sharir including Anatomy & Physiology, Rog Vigy?na, Surgery and Treatment of elephants as well as their care. It is the one and only complete printed Samhit? and rare book on Hast?yurv?da by Palk?pya. PMID:18175649

Sharma, Mahesh Chandra

400

Estudo de não gaussianidade nas anisotropias da RCF medidas Wmap  

NASA Astrophysics Data System (ADS)

A investigação do campo de flutuações da Radiação Cósmica de Fundo (RCF) pode oferecer um importante teste para os modelos cosmológicos que descrevem a origem e a evolução das flutuações primordiais. De um lado, apresenta-se o modelo inflacionário que prevê um espectro de flutuações adiabáticas distribuídas segundo uma gaussiana e, de outro, os modelos de defeitos topológicos (dentre outros) que descrevem um mecanismo para a geração de flutuações de isocurvatura que obedecem a uma distribuição não gaussiana. Este trabalho tem como objetivo caracterizar traços do modelo não gaussiano de campo misto (entre flutuações adiabáticas e de isocurvatura) nos mapas do Wilkinson Microwave Anisotropy Probe (WMAP). Simulações das anisotropias da RCF no contexto de mistura indicam traços marcantes na distribuição das flutuações de temperatura, mesmo quando consideradas pequenas contribuições do campo de isocurvatura (da ordem de 0.001). O efeito da mistura entre os campos resulta na transferência de potência de flutuações em escalas angulares intermediárias para flutuações em pequenas escalas angulares. Este efeito pode ser caracterizado pela relação entre as amplitudes dos primeiros picos acústicos no espectro de potência da RCF. Neste trabalho, investigamos a contribuição do campo de isocurvatura, no contexto de mistura, sobre as observações recentes da RCF realizadas pelo WMAP. As previsões do modelo de campo misto, uma vez confrontadas com as observações em pequenas escalas angulares, podem ajudar a revelar a natureza das flutuações primordiais.

Andrade, A. P. A.; Wuensche, C. A.; Ribeiro, A. L. B.

2003-08-01

401

Characterization of vinpocetine effects on DA and DOPAC release in striatal isolated nerve endings  

Microsoft Academic Search

The effect of vinpocetine, a nootropic drug with anti-ischemic potential, on the release of DA and its main metabolite, DOPAC, was investigated in striatum isolated nerve endings under resting and depolarized conditions. Vinpocetine does not modify the baseline release of DA or the exocytotic release of DA evoked by high K+, but inhibits the release of DA evoked by veratridine

Francisco Trejo; Vladimir Nekrassov; Mar??a Sitges

2001-01-01

402

THE TIME RESOLVED POSITRON LIGHT EMISSION (3+L) EXPERIMENT: A NOVEL DIAGNOSTICS TOOL FOR THE DA?NE POSITRON RING  

Microsoft Academic Search

At the Laboratori Nazionali di Frascati, a novel diagnostics experiment named 3+L (Time Resolved e+ Light), funded by the Vth National Scientific Committee of the Istituto Nazionale di Fisica Nucleare, has been set-up on one of the positron ring bending magnet to monitor in real time e+ bunch shape and behavior in DA?NE lepton collider. The system represents a novel

A. Bocci; M. Cestelli Guidi; A. Clozza; A. Drago; A. Grilli; A. Marcelli; A. Raco; R. Sorchetti; L. Gambicorti

403

Mevalocidin: a novel, phloem mobile phytotoxin from Fusarium DA056446 and Rosellinia DA092917.  

PubMed

A multiyear effort to identify new natural products was built on a hypothesis that both phytotoxins from plant pathogens and antimicrobial compounds might demonstrate herbicidal activity. The discovery of one such compound, mevalocidin, is described in the current report. Mevalocidin was discovered from static cultures of two unrelated fungal isolates designated Rosellinia DA092917 and Fusarium DA056446. The chemical structure was confirmed by independent synthesis. Mevalocidin demonstrated broad spectrum post-emergence activity on grasses and broadleaves and produced a unique set of visual symptoms on treated plants suggesting a novel mode of action. Mevalocidin was rapidly absorbed in a representative grass and broadleaf plant. Translocation occurred from the treated leaf to other plant parts including roots confirming phloem as well as xylem mobility. By 24 hr after application, over 20 % had been redistributed through-out the plant. Mevalocidin is a unique phytotoxin based on its chemistry, with the uncommon attribute of demonstrating both xylem and phloem mobility in grass and broadleaf plants. PMID:23314893

Gerwick, B Clifford; Brewster, William K; Deboer, Gerrit J; Fields, Steve C; Graupner, Paul R; Hahn, Donald R; Pearce, Cedric J; Schmitzer, Paul R; Webster, Jeffery D

2013-01-13

404

In vivo dopamine (DA) receptor binding and behavioural effects of the putative DA autoreceptor antagonists (+)-AJ 76 and (+)UH 232 in rats with a unilateral nigral 6-OH-DA lesion  

Microsoft Academic Search

The in vivo dopamine (DA) receptor binding and behavioural properties of the recently characterised putative preferential DA autoreceptor antagonists (+)-AJ 76 and (+)-UH 232 were studied in rats with a unilateral 6-OH-DA lesion of the substantia nigra. The main findings were a) that (+)-UH 232 and (+)-AJ 76 per se failed to produce significant turning behaviour, b) that both agents

M. Hajos; S. Hjorth; K. Svensson; A. Carlsson

1988-01-01

405

Binocular depth perception from unpaired image points need not depend on scene organization.  

PubMed

Dichoptic stimuli containing unmatched features can produce depth perception despite the absence of binocular disparity, a phenomenon known as da Vinci stereopsis. Unmatched points can arise from depth discontinuities and partial occlusion in the real world. It has been hypothesized that spatial organization of unmatched image features as dictated by the ecological optics of occlusion might determine perceived depth in da Vinci stereopsis. We tested this hypothesis by creating dichoptic stimuli containing unmatched points in which local cues and overall organization could be dissociated. For these stimuli, observers' perception of depth did not depend on the organization of the scene, but only on the local cues. This finding shows the perceived depth of unpaired points need not depend on reconstructing the spatial organization of depth discontinuities in real-world scenes. PMID:15621172

Tsai, Jeffrey J; Victor, Jonathan D

2005-03-01

406

Lateral palatal flap approach to the nasopharynx and parapharyngeal space for transoral robotic surgery: a cadaveric study.  

PubMed

The da Vinci surgical robot has been used for minimally invasive surgery of the head and neck region including resection of tumors in the nasopharynx. Access to and vision of the nasopharynx with the robot are difficult. A pure transoral approach and midline palatal split approach have been described. The disadvantage of these approaches is the limited lateral access to the parapharyngeal space. The objective of this study was to investigate the feasibility of accessing the nasopharynx and parapharyngeal space with a lateral palatal flap. Two complete nasopharyngectomies with resection of the parapharyngeal space and exposure of the internal carotid artery and branches of the mandibular nerves were performed on two fresh cadavers with the da Vinci surgical robot. The set up of the robot, the surgical procedure of elevating the lateral palatal flap, and robotic resection of the nasopharynx and parapharyngeal space are described. PMID:23704859

Tsang, Raymond K; Mohr, Catherine

2012-04-24

407

On electrical digital simulation system compatible electronic transducer  

Microsoft Academic Search

Power system real-time digital simulation system (RTDS), which is widely used in China, plays an important role in the stability analysis, security assessment, relay protection equipments test, etc. With electronic transformers, the D\\/A conversion and the power amplification are no longer needed and the output data by simulation software can be directly sampled. The schematic diagram of the new digital

Guangling Gao; Zhencun Pan; Xianghua Pan; Wei Cong

2008-01-01

408

Mutations That Affect the Tropism of DA and GDVII Strains of Theiler's Virus In Vitro Influence Sialic Acid Binding and Pathogenicity  

Microsoft Academic Search

Theiler's murine encephalomyelitis virus (TMEV) is a natural pathogen of the mouse. The different strains of TMEV are divided into two subgroups according to the pathology they provoke. The neurovirulent strains GDVII and FA induce an acute fatal encephalitis, while persistent strains, like DA and BeAn, cause a chronic demyelinating disease associated with viral persistence in the central nervous system.

Karima Jnaoui; Muriel Minet; Thomas Michiels

2002-01-01

409

RHC method for application to BMI-based systems  

Microsoft Academic Search

Purpose – The purpose of this paper is to present research in the area of control method for the man-machine systems with brain machine interface (BMI). Concrete target system is, for instance, a car cruising system and so on. Design\\/methodology\\/approach – The improved receding horizon control (RHC) method for the sampled-data systems and the adaptive digital-to-analog (DA) converter which has

Tohru Kawabe

2008-01-01

410

Determinacao de (sup 210) Pb em aguas minerais da cidade de Aguas da Prata. (Determination of (sup 210) Pb in mineral spring waters of Aguas da Prata city).  

National Technical Information Service (NTIS)

Concentration levels of (sup 210) Pb have been analyzed in 12 mineral spring waters of Aguas da Prata city. The (sup 210) Pb concentration was determined through (sup 210) Bi, by measuring the gross beta activity of the (sup 210) Pb Cr O(sub 4) precipitat...

S. R. D. Moreira

1993-01-01

411

Objective Measures for Longitudinal Assessment of Robotic Surgery Training  

PubMed Central

Objectives Current robotic training approaches lack criteria for automatically assessing and tracking (over time) technical skills separately from clinical proficiency. We describe the development and validation of a novel automated and objective framework for assessment of training. Methods We are able to record all system variables (stereo instrument video, hand and instrument motion, buttons and pedal events) from the da Vinci surgical systems using a portable archival system integrated with the robotic surgical system. Data can be collected unsupervised, and the archival system does not change system operation in any way. Our open-ended multi-center protocol is collecting surgical skill benchmarking data from 24 trainees to surgical proficiency, subject only to their continued availability. Two independent experts performed structured (OSATS) assessments on longitudinal data from 8 novice and 4 expert surgeons to generate ground truth for training and to validate our computerized statistical analysis methods in identifying ranges of operational and clinical skill measures. Results Objective differences in operational and technical skill between known experts and other subjects were quantified. Longitudinal learning curves and statistical analysis for trainee performance measures are reported. Graphical representations of skills developed for feedback to the trainees are also included. Conclusions We describe an open-ended longitudinal study and automated motion recognition system capable of objectively differentiating between clinical and technical operational skills in robotic surgery. Our results demonstrate a convergence of trainee skill parameters towards those derived from expert robotic surgeons over the course of our training protocol.

Kumar, Rajesh; Jog, Amod; Vagvolgyi, Balazs; Nguyen, Hiep; Hager, Gregory; Chen, Chi Chiung Grace; Yuh, David

2011-01-01

412

Replacement of Highly Educated Surgical Assistants by Robot Technology in Working Life: Paradigm Shift in the Service Sector  

Microsoft Academic Search

This article highlights the thus far unexplained social and professional effects raised by robotization in surgical applications,\\u000a and further develops an understanding of social acceptance among professional users of robots in the healthcare sector. It\\u000a presents findings from ethnographic workplace research on human-robot interactions (HRI) in a population of twenty-three professionals.\\u000a When considering all the findings, the latest da Vinci

Kristian Wasen

2010-01-01

413

Low Head, Vortex Induced Vibrations River Energy Converter  

Microsoft Academic Search

Vortex Induced Vibrations Aquatic Clean Energy (VIVACE) is a novel, demonstrated approach to extracting energy from water currents. This invention is based on a phenomenon called Vortex Induced Vibrations (VIV), which was first observed by Leonardo da Vinci in 1504AD. He called it âAeolian Tones.â For decades, engineers have attempted to prevent this type of vibration from damaging structures, such

Michael B. Bernitsas; Tad Dritz

2006-01-01

414

Setting up robotic surgery in gynaecology: the experience of the Strasbourg teaching hospital  

Microsoft Academic Search

Teleoperated surgical robots could provide a genuine breakthrough in laparoscopy and it is for this reason that the development\\u000a of robot-assisted laparoscopy is one of the priorities of the Strasbourg University Hospitals’ strategic plan. The hospitals\\u000a purchased a da Vinci S® robot in June 2006 and Strasbourg has, in IRCAD, one of the few robotic surgery training centres in the

N. Sananès; O. Garbin; M. Hummel; C. Youssef; R. Vizitiu; D. Lemaho; D. Rottenberg; P. Diemunsch; A. Wattiez

2011-01-01

415

Robot-assisted laparoscopic pyeloplasty with stone removal in an ectopic pelvic kidney.  

PubMed

Ectopic pelvic kidneys with ureteropelvic junction obstruction and stones present a treatment challenge for the minimally invasive surgeon. A pure laparoscopic approach is less invasive than an open approach but is technically difficult with longer operative time. The use of the da Vinci robotic interface has the potential to refine the laparoscopic technique and improve outcomes. Here, we present successful management using the robotic technique of one such case of concomitant pyeloplasty and pyelolithotomy. PMID:20529538

Nayyar, Rishi; Singh, Prabhjot; Gupta, Narmada P

416

Robot-Assisted Laparoscopic Pyeloplasty with Stone Removal in an Ectopic Pelvic Kidney  

PubMed Central

Ectopic pelvic kidneys with ureteropelvic junction obstruction and stones present a treatment challenge for the minimally invasive surgeon. A pure laparoscopic approach is less invasive than an open approach but is technically difficult with longer operative time. The use of the da Vinci robotic interface has the potential to refine the laparoscopic technique and improve outcomes. Here, we present successful management using the robotic technique of one such case of concomitant pyeloplasty and pyelolithotomy.

Nayyar, Rishi; Singh, Prabhjot

2010-01-01

417

[The Mona Lisa: a compendium of Internal Medicine].  

PubMed

Through the history of art many artists in their works have portrayed different signs of pathologies. In some cases, the illnesses are easily recognised, although in others a well trained specialist is necessary to reach the diagnosis. Within the numerous works of art that have attracted medical interest, there is none comparable to the most famous and enigmatic portrait painted by Leonardo da Vinci, the Mona Lisa. PMID:16737438

Martínez García, A

2006-03-01

418

The Mona Lisa identification: evidence from a computer analysis  

Microsoft Academic Search

A recent computer-aided study identified the model immortalized in Leonardo da Vinci's celebratedMona Lisa to be none other than the artist himself. A follow-up investigation empolying similar techniques identifies the subject of asecond “Hidden”Mona Lisa by the same artist. Analysis of photographic and x-ray images indicates that Leonardo first created a sketch of Isabella, Duchess of Aragon, which he later

Lillian F. Feldmann Schwartz

1988-01-01

419

New media-supported learning today and tomorrow: recommendations for the next generation of education and training concepts supported by new learning media  

Microsoft Academic Search

Purpose – The purpose of this paper is to describe the results of a research study on eLearning across Europe. The aims are to identify the main focus of eLearning projects supported by the European Leonardo da Vinci programme and to give recommendations for the future. Design\\/methodology\\/approach – The objectives were achieved in two different steps: First, the projects were

Peter Littig

2006-01-01

420

Intra-operative “Pick-Up” Ultrasound for Robot Assisted Surgery with Vessel Extraction and Registration: A Feasibility Study  

Microsoft Academic Search

\\u000a We propose the use of a “pick-up” ultrasound transducer for robot-assisted minimally invasive surgeries. Unlike prior approaches,\\u000a the ultrasound transducer is inserted before the procedure and remains in the abdominal cavity throughout. We present a new\\u000a design for such an intra-abdominal ultrasound transducer with a handle that can be grasped in a repeatable manner using a\\u000a da Vinci Pro-Grasp tool.

Caitlin Schneider; Julian Guerrero; Christopher Nguan; Robert Rohling; Septimiu Salcudean

421

Robot-assisted laparoscopic aortobifemoral bypass: initial experience developing a new program  

Microsoft Academic Search

Despite improved technology for endovascular treatment of aorto iliac occlusive disease, aortobifemoral bypass (ABF) continues\\u000a to offer superior long-term patency. In an effort to reduce the morbidity of surgical ABF, multiple minimally invasive techniques\\u000a have been reported. The da Vinci robot may facilitate the construction of a minimally invasive aortic anastomosis using standard\\u000a vascular suture techniques. Our initial experience in

H. Edward Garrett Jr; Joss D. Fernandez; Charlotte Porter

2008-01-01

422

The SUPERCOMET 2 Project: Teacher Seminar and Teacher Guide  

Microsoft Academic Search

The Leonardo da Vinci pilot projects SUPERCOMET (2001-2004) and SUPERCOMET 2 (2004-2007) developed and tested teacher training materials for active, minds-on learning of electromagnetism and superconductivity at the level of upper secondary school. New multimedia materials for the pupils supported the teacher materials, including a teacher seminar in 4 half-day modules detailing the scientific contents, teaching methods, using ICT in

V. Engstrom; G. Ireson; H. Latal; L. Mathelitsch; M. Michelini; W. Peeters; G. Rath

2008-01-01

423

Il teletrasporto nella fantascienza  

Microsoft Academic Search

\\u000a La gente del tempo di Leonardo da Vinci probabilmente lo prese per matto quando, nel 1486, sperimentava la possibilità del\\u000a volo umano dopo aver fatto studi approfonditi sul volo degli uccelli e aver suggerito dei prototipi di ali umane. Eppure poco\\u000a più di quattrocento anni dopo, nel 1903, un aliante con due eliche e un motore a benzina ideato e

Leonardo Castellani; Giulia Alice Fornaro

424

Collaborative Virtual Environments as Research and Teaching Instruments in the Field of Disaster Medicine: the \\  

Microsoft Academic Search

The virtual reality simulator used in the e-DISTRICT CiPro Pilot-Project, in the context of the EUprogramme Leonardo da Vinci II, allows the realization of an Internet based Collaborative Virtual Environment and it can be used for Education and Training for Civil Protection Operators, and for Research purposes in new operational protocols and their effectiveness (which would be very expensive in

F. La Mura; F. Della Corte; Marco Gribaudo; B. Tosi; S. Alciati; R. Bordino; Giuliana Franceschinis

2007-01-01

425

The Reflect?OR project: background to the special issue  

Microsoft Academic Search

The article introduces the path, the actors and the contexts of the Reflect?OR Project. Reflect?OR is a Leonardo da Vinci Transfer of Innovation (TOI) project developed in the framework of the Lifelong Learning Programme (LLP) and promoted by the European Commission. Reflect?OR aimed at sustaining the empowerment processes of career guidance practitioners by supporting a major awareness and use of

Ruggiera Sarcina; Francesco Consoli; Massimo Tomassini; Elisa Cavicchiolo

2011-01-01

426

1. Introduction  

Microsoft Academic Search

One of the first efforts to design an underwater vehicle is due to Leonardo Da Vinci. It has been found in the Codice Atlantico (Codex Atlanticus), written between 1480 and 1518, together with the development of some diver’s devices (see Figure 1.1\\u000a and 1.2 where the corresponding page of the Codex is reported). Legends say that Leonardo worked on the

Gianluca Antonelli

427

Two applications of dynamic constructivism: Brouwer’s continuity principle and choice sequences in formal topology  

Microsoft Academic Search

We are here to celebrate a master, namely L. E. J. Brouwer, and one hundred years from the birth of his intuitionism. I believe\\u000a that the best way to keep Brouwer alive is to try and go beyond Brouwer himself. That is why it seems proper to start with\\u000a this interesting quote from Leonardo da Vinci. To go beyond Brouwer

Giovanni Sambin

428

Astronomy in the Age of Leonardo  

Microsoft Academic Search

In the 1450s, when Leonardo da Vinci was born, horoscopes were still based primarily on the 13th-century tables developed in the court of Alfonso el Sabio of Spain. By the 15th century European astronomers were computing revised forms of the tables. In Italy, for example, Giovanni Bianchini of Ferrara completed his Tabulae astronomicae in the 1440s. It was finally published

B. L. Welther

1997-01-01

429

E-training for adult education in mechatronics  

Microsoft Academic Search

This paper describes e-training in mechatronics developed for the education of adults. The training was developed as one of Leonardo da Vinci life long learning programs within the MeRLab project (Innovative Remote Laboratory in the E-training of Mechatronics). The primary target group for the training are employed and unemployed engineers and the technicians who have already completed their formal education

Andreja Rojko; Karel Jezernik

2009-01-01

430

Robotic microsurgery: corneal transplantation  

Microsoft Academic Search

Background:Robotic ocular microsurgery including corneal suturing has been proven to be feasible in porcine eyes.Aim:To determine whether or not bimanual teleoperated robotic penetrating keratoplasty (PK) can be performed in porcine and human eyes.Methods:Three arms of the da Vinci surgical robot were loaded with a dual-channel video and two, 360°-rotating, 8 mm, wrested-end effector instruments and placed over porcine eyes or

J-L Bourges; J-P Hubschman; B Burt; M Culjat; S D Schwartz

2009-01-01

431

Leonardo's Mona Lisa: Iconic Center of Male Melancholic Religion  

Microsoft Academic Search

In previous writings, I have argued that a three-to-five-year-old boy's emotional separation from his mother is the key experience in his development of a melancholic orientation to life, and that men's religious proclivities (based on honor, hope, and humor) reflect this emotional separation. In the present essay, I argue that Leonardo da Vinci's {Mona Lisa} is the iconic center of

Donald Capps

2004-01-01

432

A selection of some of Dr. McCrone's high and low profile cases in the forensic analysis of art.  

PubMed

Throughout Dr. McCrone's active professional career of over 60 years, he worked on many cases involving the forensic analysis of art. This is an overview of a small portion of these cases. Included (exposed as fakes) are the Shroud of Turin, the Vinland Map, Mayan pottery illustrations and Larionov pastels. Also included, with strong support for authentication, are three paintings attributed to Manet, Giorgione, and Leonardo da Vinci. PMID:15027547

Stoney, David A

2004-03-01

433

History of robotic surgery  

Microsoft Academic Search

Robotic surgery is one of the most advanced forms of Minimally Invasive Surgery. Although the application of robotic technology\\u000a to surgical robotics started some 20 years ago, the earliest work in robotics and automation can be traced back to 400 BC.\\u000a Some of the early pioneers include Archytas of Arentum, Leonardo da Vinci, Gianello Toriano, and Pierre Jaquet-Droz, and we\\u000a owe

Satyam Kalan; Sanket Chauhan; Rafael F. Coelho; Marcelo A. Orvieto; Ignacio R. Camacho; Kenneth J. Palmer; Vipul R. Patel

2010-01-01

434

EFEITO DA RESISTÊNCIA RESPIRATÓRIA NA VENTILAÇÃO PULMONAR  

Microsoft Academic Search

In physiotherapy breathing, the ventilation equipment is often used in the treatment of pulmonary complications. The programming of ventilatory parameters is crucial for the recovery of the patient. The physiotherapist must be trained because the indirect action of the patient in the parameters of the system can make the programming of the respirator complicated. In this work it was studied

J. T. Mayor; J. M. Maia

435

Inhibition of long-distance movement of RNA silencing signals in Nicotiana benthamiana by Apple chlorotic leaf spot virus 50 kDa movement protein  

Microsoft Academic Search

Apple chlorotic leaf spot virus 50 kDa movement protein (P50) acts as a suppressor of systemic silencing in Nicotiana benthamiana. Here, we investigate the mode of action of P50 suppressor. An agroinfiltration assay in GFP-expressing N. benthamiana line16c (GFP-plant) showed that P50 could not prevent the short-distance spread of silencing. In grafting experiments, the systemic silencing was inhibited in GFP-plants (scion)

Hajime Yaegashi; Akihiro Tamura; Masamichi Isogai; Nobuyuki Yoshikawa

2008-01-01

436

Secretion of authentic 20-kDa human growth hormone (20K hGH) in Escherichia coli and properties of the purified product  

Microsoft Academic Search

Using Bacillus amyloliquefaciens neutral protease gene (npr), we have constructed a secretion system of 20-kDa human growth hormone (20K hGH) in E. coli. The secretion-signal region from npr was modified inserting a fragment coding a 2Lys–5Leu cluster. In this system we found that co-expression of glutathione reductase remarkably increased accumulation level of 20K hGH in periplasm and confirmed that secreted

H Uchida; N Naito; N Asada; M Wada; M Ikeda; H Kobayashi; M Asanagi; K Mori; Y Fujita; K Konda; N Kusuhara; T Kamioka; K Nakashima; M Honjo

1997-01-01

437

72 kDa Extracellular Heat Shock Protein (eHsp72), Norepinephrine (NE), and the Innate Immune Response Following Moderate Exercise  

Microsoft Academic Search

\\u000a It is now well known that both norepinephrine (NE) and 72 kDa extracellular heat shock protein (eHsp72) are released during\\u000a stress, and that they can activate the immune system, mainly the innate immune response, even before a pathogen challenge.\\u000a This is one reason why they have been postulated as “stress messengers or mediators” or “danger signals” for the immune system\\u000a during

Eduardo Ortega; Esther Giraldo; M. Dolores Hinchado; Leticia Martín-Cordero; Juan J. García

438

Universal Leonardo  

NSDL National Science Digital Library

To say Leonardo da Vinci was a bit of a polymath is akin to casually mentioning that Rachmaninov had some facility on the piano. His works spanned the visual arts, engineering, mathematics, anatomy, and many other areas which have fascinated and confounded humans for millennia. This website serves as an tribute to his prodigious skills, and it warrants several visits. On the top of the homepage, visitors will find sections that include "Visit," "Explore," "Play," "Discover," and "Research." Visitors would do well to look through the "Explore" section first. Here they can take in interactive exhibits which look into da Vinci's work on human anatomy, the natural world, and his thoughts on light and vision. Moving along, the "Play" section is truly fun for all ages, as visitors can make their own monster, interact with a series of pulleys, and even make the Mona Lisa smile. Additionally, the "Discover" area discusses the various scientific techniques used to explore and analyze da Vinci's "Madonna of the Yarnwinder."

439

Immune System  

MedlinePLUS

... could put us out of commission. What the Immune System Does The immune (pronounced: ih- myoon ) system, which ... Continue Things That Can Go Wrong With the Immune System Disorders of the immune system can be broken ...

440

Control pathways of the 67 kDa laminin binding protein: surface expression and activity of a new ligand binding domain.  

PubMed

A number of papers have been published on the clinical correlation of the expression of the 67 kDa laminin binding protein (LBP) with the metastatic potential of solid tumors. Both mRNA and protein expression levels have been reported, but both the relationship between them and the molecular nature of the 67 kDa surface product remain unclear. We have utilized a homotypic overexpression system to investigate the cell surface presentation of the 67 kDa LBP and the contribution of this protein to the invasive phenotype of cultured cell lines. We report here that the cellular mRNA levels do not directly reflect the levels of the 67 kDa LBP observed on the cell surface in this overexpression system. Methotrexate amplification of transfected plasmids expressing the 67 kDa LBP leads to an initial elevation of both the LBP mRNA and surface protein levels. This is accompanied by an altered, more flattened, cell morphology. Later, apparent adaptation of the cells to methotrexate is accompanied by a down-regulation of the surface expression of the protein. mRNA levels, however, remain elevated. A nine amino acid sequence, CDPGYIGSR (peptide 11), within the beta chain of laminin 1 has been identified as a probable binding domain for the 67 kDa LBP. Previous studies have identified a region of the 67 kDa LBP which may be involved in laminin interaction, although not necessarily via the peptide 11 domain. We have identified a second site within the amino acid coding sequence of the 67 kDa LBP which also shows biological activity both in vitro and in vivo. A peptide with this sequence, LBP residues 205-229, binds laminin-1 in a peptide 11 inhibitable manner. The receptor-derived peptide modulates invasion of basement membrane matrix in vitro and inhibits experimental lung colony formation when injected along with B16BL6 mouse melanoma cells. However, pretreatment of the melanoma cells with the peptide enhances lung colony formation. Thus, the interaction of the 67 kDa LBP with basement membrane matrix appears to involve a complex series of events including multiple adhesive sites and tight regulation of cell surface expression. PMID:7641420

Landowski, T H; Uthayakumar, S; Starkey, J R

1995-09-01

441

Production of a recombinant full-length collagen type I alpha-1 and of a 45-kDa collagen type I alpha-1 fragment in barley seeds.  

PubMed

Recombinant DNA technology can be used to design and express collagen and gelatin-related proteins with predetermined composition and structure. Barley seed was chosen as a production host for a recombinant full-length collagen type I alpha1 (rCIa1) and a related 45-kDa rCIa1 fragment. The transgenic barley seeds were shown to accumulate both the rCIa1 and the 45-kDa rCIa1 fragment. Even when the amount of the rCIa1 was just above the detection threshold, this work using rCIa1 as a model demonstrated for the first time that barley seed can be used as a production system for collagen-related structural proteins. The 45-kDa rCI1a fragment expression, targeted to the endoplasmic reticulum, was controlled by three different promoters (a constitutive maize ubiquitin, seed endosperm-specific rice glutelin and germination-specific barley alpha-amylase fusion) to compare their effects on rCIa1 accumulation. Highest accumulation of the 45-kDa rCIa1 was obtained with the glutelin promoter (140 mg/kg seed), whereas the lowest accumulation was obtained with the alpha-amylase promoter. To induce homozygosity for stable 45-kDa rCIa1 production in the transgenic lines, doubled haploid (DH) progeny was generated through microspore culture. The 45-kDa rCIa1 expression levels achieved from the best DH lines were 13 mg/kg dry seeds under the ubiquitin promoter and 45 mg/kg dry seeds under the glutelin promoter. Mass spectroscopy and amino acid composition analysis of the purified 45-kDa rCIa1 fragment revealed that a small percent of prolines were hydroxylated with no additional detectable post-translational modifications. PMID:19656332

Eskelin, Katri; Ritala, Anneli; Suntio, Taina; Blumer, Susan; Holkeri, Heidi; Wahlström, Eva H; Baez, Julio; Mäkinen, Kristiina; Maria, Nuutila Anna

2009-07-27

442

Um estudo espectrofotométrico da variável cataclísmica V3885 Sgr  

NASA Astrophysics Data System (ADS)

Variáveis Cataclísmicas são sistemas binários cerrados compostos de uma anã vermelha que transfere matéria para uma anã branca, em sistemas não magnéticos ocorre a formação de um disco de acresção em torno da anã branca. V3885 Sgr é uma variável cataclísmica classificada como sendo do tipo nova-like. É apresentado um estudo espectrofotométrico de V3885 Sgr de alta resolução temporal feito na região do visível. A região observada é centrada em Ha e abrange também a linha de HeI 6678. O primeiro resultado obtido neste estudo é a determinação do período orbital a partir de medidas da velocidade radial da linha de Ha como sendo 0,20716071(22) dias, resolvendo inconsistências quanto a esse valor na literatura e definindo uma efeméride a longo prazo para o sistema. Com este período e as medidas de velocidade radial do perfil de linha de Ha foi construído um diagrama de massas, através do qual restringimos as massas das componentes estelares do sistema e limitamos a inclinação orbital do sistema. Foram construídos diagramas de Greenstein para as linhas de Ha e HeI, onde os espectros médios em cada intervalo de fase são representados lado a lado em escala de cinza, indicando a existência de uma emissão intensa proveniente da parte posterior do disco. A partir da tomografia Doppler obtivemos perfis de emissividade radial para o disco tanto para a linha de Ha como para HeI. Os resultados obtidos são comparados com os de outros sistemas estudados com a mesma técnica. Serão apresentados também resultados da tomografia de flickering para o sistema.

Ribeiro, F. M. A.; Diaz, M. P.

2003-08-01

443

Dynamical System  

Microsoft Academic Search

SUMMARY This paper addresses the parameter estimation problem of an interval-based hybrid dynamical system (interval system). The interval system has a two-layer architecture that comprises a finite state automaton and multiple linear dynam- ical systems. The automaton controls the activation timing of the dynamical systems based on a stochastic transition model between intervals. Thus, the interval system can generate and

Takashi MATSUYAMA

444

Mutations That Affect the Tropism of DA and GDVII Strains of Theiler's Virus In Vitro Influence Sialic Acid Binding and Pathogenicity  

PubMed Central

Theiler's murine encephalomyelitis virus (TMEV) is a natural pathogen of the mouse. The different strains of TMEV are divided into two subgroups according to the pathology they provoke. The neurovirulent strains GDVII and FA induce an acute fatal encephalitis, while persistent strains, like DA and BeAn, cause a chronic demyelinating disease associated with viral persistence in the central nervous system. Different receptor usage was proposed to account for most of the phenotype difference between neurovirulent and persistent strains. Persistent but not neurovirulent strains were shown to bind sialic acid. We characterized DA and GDVII derivatives adapted to grow on CHO-K1 cells. Expression of glycosaminoglycans did not influence infection of CHO-K1 cells by parental and adapted viruses. Mutations resulting from adaptation of DA and GDVII to CHO-K1 cells notably mapped to the well-characterized VP1 CD and VP2 EF loops of the capsid. Adaptation of the DA virus to CHO-K1 cells correlated with decreased sialic acid usage for entry. In contrast, adaptation of the GDVII virus to CHO-K1 cells correlated with the appearance of a weak sialic acid usage for entry. The sialic acid binding capacity of the GDVII variant resulted from a single amino acid mutation (VP1-51, Asn?Ser) located out of the sialic acid binding region defined for virus DA. Mutations affecting tropism in vitro and sialic acid binding dramatically affected the persistence and neurovirulence of the viruses.

Jnaoui, Karima; Minet, Muriel; Michiels, Thomas

2002-01-01

445

Mapeamento DA Vegetacao/USO DA Terra de Areas Indigenas Utilisando-Se Dados TM/LANDSAT (Mapping of Vegetation/Land Use of Indigenous Areas Utilizing TM/LANDSAT Data).  

National Technical Information Service (NTIS)

The objective of this work is to provide environmental information about indigenous areas (Ananas Ponta da Serra, Cajueiro, Ouro, Araca, Serra da Moca, Recanto da Saudade). The study area is located in Boa Vista, Bonfim, and Alto Alegre municipalities in ...

P. Hernandezfilho K. Defaria

1990-01-01

446

UniDA: Uniform Device Access Framework for Human Interaction Environments  

PubMed Central

Human interaction environments (HIE) must be understood as any place where people carry out their daily life, including their work, family life, leisure and social life, interacting with technology to enhance or facilitate the experience. The integration of technology in these environments has been achieved in a disorderly and incompatible way, with devices operating in isolated islands with artificial edges delimited by the manufacturers. In this paper we are presenting the UniDA framework, an integral solution for the development of systems that require the integration and interoperation of devices and technologies in HIEs. It provides developers and installers with a uniform conceptual framework capable of modelling an HIE, together with a set of libraries, tools and devices to build distributed instrumentation networks with support for transparent integration of other technologies. A series of use case examples and a comparison to many of the existing technologies in the field has been included in order to show the benefits of using UniDA.

Varela, Gervasio; Paz-Lopez, Alejandro; Becerra, Jose Antonio; Vazquez-Rodriguez, Santiago; Duro, Richard Jose

2011-01-01

447

UniDA: uniform device access framework for human interaction environments.  

PubMed

Human interaction environments (HIE) must be understood as any place where people carry out their daily life, including their work, family life, leisure and social life, interacting with technology to enhance or facilitate the experience. The integration of technology in these environments has been achieved in a disorderly and incompatible way, with devices operating in isolated islands with artificial edges delimited by the manufacturers. In this paper we are presenting the UniDA framework, an integral solution for the development of systems that require the integration and interoperation of devices and technologies in HIEs. It provides developers and installers with a uniform conceptual framework capable of modelling an HIE, together with a set of libraries, tools and devices to build distributed instrumentation networks with support for transparent integration of other technologies. A series of use case examples and a comparison to many of the existing technologies in the field has been included in order to show the benefits of using UniDA. PMID:22163700

Varela, Gervasio; Paz-Lopez, Alejandro; Becerra, Jose Antonio; Vazquez-Rodriguez, Santiago; Duro, Richard José

2011-09-29

448

Image analysis of the observations of the DA240 region with the Miyun radio telescope  

NASA Astrophysics Data System (ADS)

In this paper, observations of sky region DA240 with the Miyun Metre-wave Synthesis Radiotelescope (MSRT) at 232 MHz are analysed, using a new method of image processing developed by Wei. Several maps of good quality of the radio source DA240 and its surrounding region are obtained. A number of common problems encountered in metre-wave synthesis systems are solved as follows. 1) Large-scale gradients in the ionosphere give rise to systematic shifts in the apparent one-dimensional positions of sources which in turn result in distortion of the shape of the synthesised beam (see Fig 1b). Instrumental phase errors and ionospheric phase irregularities cause sidelobes and degrade the dynamic range. A new method of one-dimensional image correlation analysis is used to overcome these problems. 2) Low-level interference of long duration and offset of the correlators give rise to circular arcs centred at the north celestial pole. Strong radio interference results in parallel stripes on the map (see Fig. 1a). These rings and stripes are removed by means of a digital filter of artificial fringes. 3) Due to incomplete UV-coverage, there are some radial sidelobes and gratings centred at each source on the maps. A modified CLEAN method is used to remove these sidelobes and gratings. Comparison between our calibrated maps and those made by other authors at other frequencies indicates that our processing is reliable and effective.

Wei, Ming-zhi; Qian, Shan-jie

1988-03-01

449

A parallel bit map processor architecture for DA algorithms  

Microsoft Academic Search

Bit maps have been used in many Design Automation (DA) algorithms such as printed circuit board (PCB) layout and integrated circuit (IC) design rule checking (DRC). The attraction of bit maps is that they provide a direct representation of two-dimensional images. The difficulty with large scale use of bit maps (e.g., for DRC on VLSI) is that the large amounts

Tom Blank; Mark Stefik; Willem vanCleemput

1981-01-01

450

Gente da Nossa - the production of a mediated \\  

Microsoft Academic Search

Gente da nossa is the name of a TV show produced in Toronto, Canada, by a small team of second generation Portuguese\\/Azorean migrants. Mainly focused in the Portuguese migrant population residing in Canada but broadcasted to all North America and Bermuda and present in the Internet, this weekly TV show is currently being studied both as a window to the

Marta Rosales; Sonia Ferreira

451

O DISCURSO DE ALUNOS DO ENSINO MÉDIO A RESPEITO DA \\  

Microsoft Academic Search

Resumo: O objetivo deste trabalho foi investigar os gêneros de discursos utilizados por alunos da terceira série do Ensino Médio a respeito de um dos conteúdos vinculados ao ensino de química ambiental: o estudo do gás ozônio e os problemas relacionados à degradação de sua camada na atmosfera terrestre. Os resultados apontam para um nível de envolvimento discursivo em que

Marcelo Maia Cirino; Aguinaldo Robinson de Souza

2008-01-01

452

Asteroid 1986 DA: Radar evidence for a metallic composition  

Microsoft Academic Search

Radar observations of the near-Earth asteroid 1986 DA were carried out at the Arecibo Observatory in April 1986, two months after its discovery. Radar results are consistent with the hypothesis that 1986 HA is a piece of NiFe metal derived from the interior of a much larger object that melted, differentiated, cooled and subsequently was disrupted in a catastrophic collision.

Steven J. Ostro; D. B. Campbell; J. F. Chandler; A. A. Hine; R. S. Hudson; K. D. Rosema; Irwin I. Shapiro

1991-01-01

453

Assessing “Western” Mindfulness Among Thai Therav?da Buddhist Monks  

Microsoft Academic Search

Mindfulness has its roots in Eastern contemplative traditions and is rapidly gaining popularity in Western psychology. However, questions remain regarding the validity of Western operationalizations of mindfulness. Therefore, the purpose of this study was to assess the applicability of several Western mindfulness measures among a sample of Thai Therav?da Buddhist monks. Twenty-four monks recruited from Buddhist temples in Thailand participated

Michael S. Christopher; Varinthorn Christopher; Sukjai Charoensuk

2009-01-01

454

Observation Asteroid 2012 DA14 in the Shamakhy Astrophysical Observatory  

NASA Astrophysics Data System (ADS)

On February 15, 2013 in the Shamakhy Astrophysical Observatory have been made observations on the eve of the maximum approachment of an astroid 2012 DA14. For 30 minutes have taken 31 cadre and angular displacement was 22 degrees. Speed of move the asteroid off from the Earth is defined. - V=7.73 km/s

Teymurov, N. N.; Bogdanov, R. R.; Zamanov A. V.; Mammadov, F. R.; Mustafa, F. R., Mikailov, Kh. M.

2012-08-01

455

40 CFR 60.48Da - Compliance provisions.  

Code of Federal Regulations, 2010 CFR

...performance of an electrostatic precipitator (ESP) operated to comply with the applicable...60.42Da(c)(2) or (d) using an ESP predictive model developed in accordance...this section. (i) You must calibrate the ESP predictive model with each PM control...

2009-07-01

456

40 CFR 60.48Da - Compliance provisions.  

Code of Federal Regulations, 2010 CFR

...performance of an electrostatic precipitator (ESP) operated to comply with the applicable...60.42Da(c)(2) or (d) using an ESP predictive model developed in accordance...section. (i) You must calibrate the ESP predictive model with each PM control...

2010-07-01

457

A teoria da percolação aplicada às galáxias aneladas peculiares  

Microsoft Academic Search

Formulado no final da década de 50, o modelo de percolação concentra-se em descrever o meio poroso, que será visto neste trabalho como uma rede de canais aleatórios, por onde escoa um fluido determinístico. Se o número de canais for suficientemente grande, então eles estarão ligados e o meio se tornará permeável à passagem do fluido. Neste caso, dizemos que

P. C. R. Poppe; V. A. F. Martin; N. G. F. de Medeiros; M. Faúndez-Abans; M. Oliveira-Abans

2003-01-01

458

Síndrome da cabeça caída em doença do neurônio motor  

Microsoft Academic Search

RESUMO - A síndrome da cabeça caída é causada por diminuição de força nos músculos extensores do pescoço sendo encontrada em diversas doenças neuro m u s c u l a res, bem como, na esclerose lateral amiotrófica. D e s c revemos o caso de três mulheres com diagnóstico de doença do neurônio motor com quadro clínico de disfagia

Paulo José Lorenzoni; Marcos Christiano Lange; Cláudia S. K. Kay; Luiz G. M. P. de Almeida; Hélio A. G. Teive; Rosana H. Scola; Lineu C. Werneck

2006-01-01

459

A new computer system for polarimetric measurements.  

NASA Astrophysics Data System (ADS)

A new computer-based system for polarimetric measurements has been developed at the Belgrade Observatory to replace the old analog-digital one. The system consists of a standard PC computer, expanded with a 12-bit AD/DA card, which is directly applied to the output signals from the photomultiplier and the position angle marker of the polarization analyzer. A special software package has been developed to support all the steps in the observing process. Finally the new system has been tested and compared with the old one, using a group of standard polarized stars.

Skuljan, J.; Arsenijevi?, J.; Kubi?ela, A.

1994-07-01

460

Development of an Integrated Distribution Management System  

SciTech Connect

This final report details the components, functionality, costs, schedule and benefits of developing an Integrated Distribution Management System (IDMS) for power distribution system operation. The Distribution Automation (DA) and Supervisory Control and Data Acquisition (SCADA) systems used by electric power companies to manage the distribution of electric power to retail energy consumers are vital components of the Nation’s critical infrastructure. Providing electricity is an essential public service and a disruption in that service, if not quickly restored, could threaten the public safety and the Nation’s economic security. Our Nation’s economic prosperity and quality of life have long depended on the essential services that utilities provide; therefore, it is necessary to ensure that electric utilities are able to conduct their operations safely and efficiently. A fully integrated technology of applications is needed to link various remote sensing, communications and control devices with other information tools that help guide Power Distribution Operations personnel. A fully implemented IDMS will provide this, a seamlessly integrated set of applications to raise electric system operating intelligence. IDMS will enhance DA and SCADA through integration of applications such as Geographic Information Systems, Outage Management Systems, Switching Management and Analysis, Operator Training Simulator, and other Advanced Applications, including unbalanced load flow and fault isolation/service restoration. These apps are capable of utilizing and obtaining information from appropriately installed DER, and by integrating disparate systems, the Distribution Operators will benefit from advanced capabilities when analyzing, controlling and operating the electric system.

Schatz, Joe E.

2010-10-20

461

Protective Immune Responses to the 42-Kilodalton (kDa) Region of Plasmodium yoelii Merozoite Surface Protein 1 Are Induced by the C-Terminal 19-kDa Region but Not by the Adjacent 33-kDa Region  

Microsoft Academic Search

Vaccination of mice with the 42-kDa region of Plasmodium yoelii merozoite surface protein 1 (MSP142 )o r its 19-kDa C-terminal processing product (MSP119) can elicit protective antibody responses in mice. To investi- gate if the 33-kDa N-terminal fragment (MSP133) of MSP142 also induces protection, the gene segment encoding MSP133 was expressed as a glutathione S-transferase (GST) fusion protein. C57BL\\/6 and

Niklas Ahlborg; Irene T. Ling; Wendy Howard; Anthony A. Holder; Eleanor M. Riley

2002-01-01

462

Assessment of Data Quality of an dS taff Satisfaction with an Electroni cH ealth Record System in aD evelopin gC ountry (Uganda) AQ ualitativ ea nd Quantitative Comparativ eS tudy  

Microsoft Academic Search

Summary Objectives: To assess if electronic healt hr ecord systems in developin gc ountrie sc an improve on timeliness, availability an da ccuracy of routin eh ealt hr eports and staf fs atisfaction afte ri ntroducin gt he electronic system, compared to th ep aper-base da lternative. Methods: Th er esearc hw as conducted with hospital staff of Tororo Distric

S. P. Ndira; K. D. Rosenberger; T. Wetter

463

Aerospace Systems  

NSDL National Science Digital Library

This pdf contains a syllabus for a course on aerospace systems as part of the Aerospace Technology Program. This course covers an introduction to expendable and reusable Space Launch Vehicle (SLV) systems including hydraulic, pneumatic, electrical, propulsion, mechanical, HVAC (heating, ventilation and air conditioning), and ECLSS (Environmental Control and Life Support Systems). How systems interact with computer and data acquisition systems is also covered.

2011-08-11

464

The Near-Earth Flyby of Asteroid 2012 DA14  

NASA Astrophysics Data System (ADS)

On UT 2013 February 15, the approximately 30 meter near-Earth asteroid 2012 DA14 made a close flyby of the Earth at a distance of approximately 27,000 km or 4 Earth-radii. This passage was inside the orbital distance of geosynchronous satellites and close to the Earth’s Roche limit. This close encounter was unprecedented in our advance knowledge of the incoming trajectory, thereby allowing us to forge a detailed coordinated plan for observation and testing of physical models predicting tidal effects near our planet’s Roche limit. Predicted outcomes of such close encounters include tidal disruption, changes in rotation state, and mass loss or mass redistribution due to seismic shaking. Each of these effects sensitively depend on how tidal energy is dissipated in the interior of the asteroid: a rubble pile will dissipate tidal energy differently than a solid or partially fractured monolith. The internal properties of asteroids in general and particularly those in the size range of 2012 DA14 are largely unknown. This encounter represents one of the first ever opportunities to observationally test models of the interior structure of small planetary bodies. We will present the results of a large multi-observatory campaign that obtained visible-wavelength photometric and spectroscopic observations of 2012 DA14 during its discovery epoch in 2012, and surrounding its close approach in 2013. These results include clear evidence that 2012 DA14 is now in a non-principal axis rotation state, requiring a multi-periodic tumbling model to fit its post-flyby rotational light curve. The ultimate goal of this campaign will be to investigate changes to 2012 DA14’s physical properties induced by its gravitational interactions with the Earth.

Moskovitz, Nicholas; Endicott, T.; Lister, T.; Ryan, B.; Ryan, E.; Willman, M.; Hergenrother, C.; Binzel, R.; Polishook, D.; DeMeo, F.; Benecchi, S.; Sheppard, S.; Marchis, F.; Angusteijn, T.; Birthwhistle, P.; Verveer, A.; Gulbis, A.; Nagayama, T.; Gilmore, A.; Kilmartin, P.

2013-10-01

465

Yarkovsky-driven Impact Predictions: Apophis and 1950 DA  

NASA Astrophysics Data System (ADS)

Orbit determination for Near-Earth Asteroids presents unique technical challenges due to the imperative of early detection and careful assessment of the risk posed by specific Earth close approaches. The occurrence of an Earth impact can be decisively driven by the Yarkovsky effect, which is the most important nongravitational perturbation as it causes asteroids to undergo a secular variation in semimajor axis resulting in a quadratic effect in anomaly. We discuss the cases of (99942) Apophis and (29075) 1950 DA. The relevance of the Yarkovsky effect for Apophis is due to a scattering close approach in 2029 with minimum geocentric distance ~38000 km. For 1950 DA the influence of the Yarkovsky effect in 2880 is due to the long time interval preceding the impact. We use the available information from the astrometry and the asteroids' physical models and dynamical evolution as a starting point for a Monte Carlo method that allows us to measure how the Yarkovsky effect affects orbital predictions. We also find that 1950 DA has a 98% likelihood of being a retrograde rotator. For Apophis we map onto the 2029 close approach b-plane and analyze the keyholes corresponding to resonant close approaches. For 1950 DA we use the b-plane corresponding to the possible impact in 2880. We finally compute the impact probability from the mapped probability density function on the considered b-plane. For Apophis we have 4 in a million chances of an impact in 2068, while the probability of Earth impact in 2880 for 1950 DA is 0.04%.

Chesley, Steven R.; Farnocchia, D.; Chodas, P. W.; Milani, A.

2013-10-01

466

Integration of trans-esophageal echocardiography with magnetic tracking technology for cardiac interventions  

NASA Astrophysics Data System (ADS)

Trans-esophageal echocardiography (TEE) is a standard component of patient monitoring during most cardiac surgeries. In recent years magnetic tracking systems (MTS) have become sufficiently robust to function effectively in appropriately structured operating room environments. The ability to track a conventional multiplanar 2D TEE transducer in 3D space offers incredible potential by greatly expanding the cumulative field of view of cardiac anatomy beyond the limited field of view provided by 2D and 3D TEE technology. However, there is currently no TEE probe manufactured with MTS technology embedded in the transducer, which means sensors must be attached to the outer surface of the TEE. This leads to potential safety issues for patients, as well as potential damage to the sensor during procedures. This paper presents a standard 2D TEE probe fully integrated with MTS technology. The system is evaluated in an environment free of magnetic and electromagnetic disturbances, as well as a clinical operating room in the presence of a da Vinci robotic system. Our first integrated TEE device is currently being used in animal studies for virtual reality-enhanced ultrasound guidance of intracardiac surgeries, while the "second generation" TEE is in use in a clinical operating room as part of a project to measure perioperative heart shift and optimal port placement for robotic cardiac surgery. We demonstrate excellent system accuracy for both applications.

Moore, John T.; Wiles, Andrew D.; Wedlake, Chris; Bainbridge, Daniel; Kiaii, Bob; Trejos, Ana Luisa; Patel, Rajni; Peters, Terry M.

2010-03-01

467

Robotic Surgery in Gynecologic Field  

PubMed Central

Operative laparoscopy was initially developed in the field of gynecology earlier on and the advent of laparoscopic surgery led to advances in general surgery as well. In the last few years, a number of articles have been published on the performance of surgical procedures using the robot-assisted laparoscopy. The shortcomings of conventional laparoscopy have led to the development of robotic surgical system and future of telerobotic surgery is not far away, enabling a surgeon to operate at a distance from the operating table. The complete loss of tactile sensation is often quoted as a big disadvantage of working with robotic systems. Although the first generation da Vinci robotic surgical system provides improved imaging and instrumentation, the absence of tactile feedback and the high cost of the technology remain as limitations. New generations of the robotic surgical systems have been developed, allowing visualization of preoperative imaging during the operation. Though the introduction of robotics is very recent, the potential for robotics in several specialties is significant. However, the benefit to patients must be carefully evaluated and proven before this technology can become widely accepted in the gynecologic surgery.

Kim, Sang Wun; Jung, Yong Wook

2008-01-01

468

Aesthetics Systems.  

National Technical Information Service (NTIS)

The formal structure of aesthetics systems is defined. Aesthetics systems provide for the essential tasks of interpretation and evaluation is aesthetic analysis. Kolmogorov's formulation of information theory is applicable. An aesthetics system for a clas...

J. Gips G. Stiny

1973-01-01

469

Rebreathing System.  

National Technical Information Service (NTIS)

The patent application is a constant volume rebreathing system when utilized in conjunction with an external air source, such as man. The rebreathing system forms a completely closed system between man and the environment. There is a stainless steel bello...

J. P. Conkle

1974-01-01

470

Systems Studies.  

National Technical Information Service (NTIS)

The Systems Studies Activity had two objectives: (1) to investigate nontechnical barriers to the deployment of biomass production and supply systems and (2) to enhance and extend existing systems models of bioenergy supply and use. For the first objective...

R. L. Graham

1998-01-01

471

Perfil da automedicação em idosos participantes de grupos da terceira idade de uma cidade do sul do Brasil  

Microsoft Academic Search

Resumo Introdução: A automedicação tem sido objeto de muitas pesquisas e assume uma importância maior quando é realizada por idosos, pois geralmente representam um grupo polimedicado. Objetivo: Avaliar a automedicação em idosos participantes de grupos da terceira idade localizados em uma cidade do sul do Brasil. Métodos: Foi realizado um estudo transversal baseado em entrevistas com idosos participantes de grupos

Edézio Antunes Cascaes; Maria Luiza Falchetti; Dayani Galato

472

A Inserção Feminina no Mercado de Trabalho do Agronegócio: Uma Estudo Comparativo da Sadia e da Perdigão  

Microsoft Academic Search

Resumo O estudo apresenta uma visão comparativa das práticas de evidenciação, no Balanço Social, dos indicadores sociais relacionados à inserção da mulher nas Empresas Sadia e Perdigão. A análise dos indicadores laborais pode oferecer informações relevantes para investidores e para a sociedade em geral quanto à proteção e ao estímulo do trabalho feminino. O estudo utiliza o banco de dados

Antonio Nunes Pereira; Vandresa Lucia Machado; Fabricio Carvalho Cipola; Claudio Jose Pinheiro; Ana Alice Vilas Boas

2008-01-01

473

A influência da ocupação profissional na flexibilidade global e nas amplitudes angulares dos membros inferiores e da lombar  

Microsoft Academic Search

Resumo - O desenvolvimento tecnológico no ambiente de trabalho gerou um au- mento no tempo em que os indivíduos permanecem sentados enquanto trabalham em escritórios. Isto pode estar influenciando negativamente capacidades físicas inatas como a flexibilidade da cadeia posterior do corpo, porém poucos são os estudos que avaliaram a influência do trabalho nesta capacidade física. Esta avaliação pode contribuir para

Sandra Aliberti; Bergson Weber; Cabral Queiroz; Denise Pripas; Isadora Kieling; Adriana Elisa Sellmer; Amaro Malvestio; Marcel Tomonori Sera

474

Dinâmica da alimentação natural de Callinectes danae Smith (Decapoda, Portunidae) na Lagoa da Conceição, Florianôpolis, Santa Catarina, Brasil  

Microsoft Academic Search

FEEDING NATURAL DYNAMICS OF Callinectes danae SMITH (DECAPODA, PORTUNIDAE) FROM LAGOA DA CONCEIÇÃO, FLORIANÓPOLIS, SANTA CATARINA, BRAZIL. From March\\/91 to February\\/92 monthly collection surveys were carried out to obtain basic information about the dynamics of feeding and trophic spectrum of C. danae Smith, 1869. A total of 456 males and 527 females were caught. The diet of the species was

Joaquim Olinto Branco; José Roberto Verani

1997-01-01

475

Predição de Aspectos da Emoção Constatada em Música por Descritores Cognitivos Musicais  

Microsoft Academic Search

Resumo. O estudo de cognição musical normalmente se utiliza de modelos computacionais para calcular aspectos específicos da percepção e interpretação da informação musical. Estes modelos são chamados na literatura de descritores acústicos quando calculam características musicais, na forma de series temporais, diretamente de arquivos de áudio. Chamamos de descritores cognitivos musicais (DCM) aos descritores acústicos que calculam aspectos contextuais da

Jose Fornari

476

Dieta cetogênica e dieta de Atkins modificada no tratamento da epilepsia refratária em crianças e adultos  

Microsoft Academic Search

RESUMO Introdução: A dieta cetogênica (DC) e a dieta de Atkins modificada (DAM) são dietas terapêuticas mun- dialmente utilizadas no tratamento da epilepsia refratária em crianças e adultos. No Brasil estas modalidades de tratamento são pouco indicadas, restringindo a poucos centros. Metodologia: Revisão de literatura sobre a utilização da DC e DAM no tratamento da epilepsia refratária. Conclusões: A DC

Luciana Midori Inuzuka-Nakaharada

2008-01-01

477

Ensuring Dependable Systems of Systems  

Microsoft Academic Search

The emerging class of systems known as Systems of Systems (SoS) are composed of many distributed, heterogeneous and autonomous components. Such systems are typically separately designed and manufactured and evolve throughout their lifetime. However, they are expected to work together, often in safety-critical areas of operation such as civil transportation, military operations and space exploration. As such, the systems are

Robert Alexander; Martin Hall-May; Tim Kelly

478

Brain-Specific Interaction of a 91-kDa Membrane-Bound Protein with the Cytoplasmic Tail of the 300-kDa Mannose 6Phosphate Receptor  

Microsoft Academic Search

The cytoplasmic tail of the 300 kDa mannose 6-phosphate receptor (MPR 300-CT) is thought to play an important role in sorting and targeting of lysosomal enzymes and the insulin-like growth factor II along the biosynthetic and endocytic pathway. In this study a brain specific 91 kDa protein and a 35 kDa protein salt-washed from membranes (referred as TIP 91-M and

Olaf Rosorius; Olaf-Georg Issinger; Thomas Braulke

1996-01-01

479

Preclinical Impairment of the Striatal Dopamine Transporter System in Sporadic Olivopontocerebellar Atrophy: Studied with [123I]?-CIT and SPECT  

Microsoft Academic Search

We investigated whether the dopamine (DA) transporter system is impaired in sporadic olivopontocerebellar atrophy (sOPCA) patients without clinical parkinsonism using the DA transporter radiotracer [123I]?-CIT [2?-carboxymethoxy-3?-(4-iodophenyl)tropane] and single-photon emission computed tomography (SPECT). SPECT scans were acquired in 9 patients with sOPCA, 7 multiple system atrophy (MSA) patients with parkinsonism (MSA-P), and 7 age-matched healthy controls 20–24 h after the intravenous

Gyeong-Moon Kim; Sang Eun Kim; Won Yong Lee

2000-01-01

480

Contribution of a 12 kDa protein to the angiotensin II-induced stabilization of angiotensinogen mRNA: interaction with the 3' untranslated mRNA.  

PubMed

Several authors have shown that angiotensin II stimulates hepatic angiotensinogen synthesis in vivo, ex vivo and in vitro. In previous studies we have demonstrated that this effect of angiotensin II depends mainly on a transient inhibition of adenylyl cyclase and is the consequence of a stabilization of angiotensinogen mRNA. In the present study we describe the isolation of a polysomal 12 kDa protein which, in band shift and cross link assays, shows a specific affinity to the 3' untranslated region (3' UTR) of angiotensinogen mRNA and prevents enzymatic degradation of angiotensinogen mRNA in a cell-free incubation system. [32P]UTP-labelled or unlabelled 3' fragments of angiotensinogen mRNA were synthesized on a transcription vector (pGEM5zf+) into which the corresponding DNA sequence was cloned after restriction from vector pRAG 16. Binding of the 12 kDa protein to the radioactively labelled 3' UTR of angiotensinogen mRNA could be displaced by unlabelled 3' UTR mRNA fragments but not by a renin mRNA of comparable length derived from the coding region. The RNA-binding protein appears to be derived from a higher molecular mass precursor (45 kDa) which is preferentially present under reducing conditions in vitro; the active low molecular mass form is evident in the absence of reducing agents. In a cross link experiment we established that a band shift signal which was obtained in the presence of the 45 kDa protein preparation exclusively depends on RNA binding of the active 12 kDa protein. In addition, a phosphorylation step may be involved in the activation of the 12 kDa protein, since its molecular mass and isoelectric point correlate with proteins which were phosphorylated in response to transient decreases of cAMP (induced by guanfacine or angiotensin II) or in response to a direct inhibition of protein kinase A by the cAMP antagonist Rp-cAMP. The importance of phosphorylation reactions for the stabilization of angiotensinogen mRNA was further assessed in a cell-free incubation system of rat liver parenchymal cells. These studies demonstrated that in the presence of acid phosphatase (1 U/ml) the half-life of angiotensinogen was significantly decreased. In the same incubation system the 12 kDa protein increased the half-life of endogenous as well as of exogenous angiotensinogen mRNA three- to fourfold, while no stabilizing effect was apparent when exogenous angiotensinogen mRNA from which the 3' tail had been deleted was added.(ABSTRACT TRUNCATED AT 400 WORDS) PMID:7619210

Klett, C; Bader, M; Schwemmle, M; Ganten, D; Hackenthal, E

1995-04-01

481

Chronic Ketamine Administration Modulates Midbrain Dopamine System in Mice  

PubMed Central

Ketamine is an anesthetic and a popular abusive drug. As an anesthetic, effects of ketamine on glutamate and GABA transmission have been well documented but little is known about its long-term effects on the dopamine system. In the present study, the effects of ketamine on dopamine were studied in vitro and in vivo. In pheochromocytoma (PC 12) cells and NGF differentiated-PC 12 cells, ketamine decreased the cell viability while increasing dopamine (DA) concentrations in a dose-related manner. However, ketamine did not affect the expression of genes involved in DA synthesis. In the long-term (3 months) ketamine treated mice, significant increases of DA contents were found in the midbrain. Increased DA concentrations were further supported by up-regulation of tyrosine hydroxylase (TH), the rate limiting enzyme in catecholamine synthesis. Activation of midbrain dopaminergic neurons could be related to ketamine modulated cortical-subcortical glutamate connections. Using western blotting, significant increases in BDNF protein levels were found in the midbrain, suggesting that perhaps BDNF pathways in the cortical-subcortical connections might contribute to the long-term ketamine induced TH upregulation. These data suggest that long-term ketamine abuse caused a delayed and persistent upregulation of subcortical DA systems, which may contribute to the altered mental status in ketamine abusers.

Tan, Sijie; Lam, Wai Ping; Wai, Maria S. M.; Yu, Wan-Hua Amy; Yew, David T.

2012-01-01

482

The isolated massive DA white dwarf GD 50  

SciTech Connect

Analysis of accurate hydrogen line profiles from optical and ultraviolet spectrophotometry shows that the hot DA white dwarf GD 50 (WD 0346-011) has an exceptionally high surface gravity of log g = 9.0 + or - 0.15; the derived parameters imply a mass of 1.2 solar mass and a radius of 0.0057 solar mass, if an interior composed of carbon and oxygen is assumed. As such, it is the first well-studied, isolated DA white dwarf with a likely mass larger than that of Sirius B. Moreover, the derived mass is large enough to consider the possibility that the interior is composed of oxygen, neon, and magnesium. If GD 50 has evolved as a single object, it should be quite young. Alternatively, the star could have formed as the result of a merger of a close pair of white dwarfs. 48 refs.

Bergeron, P.; Liebert, J.; Kidder, K.M.; Holberg, J.B.; Wesemael, F. (Steward Observatory, Tucson, AZ (USA) Arizona, University, Tucson Montreal, Universite, Montreal (Canada))

1991-05-01

483

[Giovanbattista da Monte (Montanus): father of modern clinical medicine].  

PubMed

The figure of Giovanbattista da Monte (1489-1551) is associated with the introduction of clinical teaching at the patient's beside, in 1543, at the San Francesco Hospital of Padua. In the XVI century, teaching was still based on the explanation and comment of the ancient authors and the educational programme was founded on theoretical aspects. The "practical" approach consisted of the treatment "ex cathedra" of diseases according to the various parts of the body, without observing the course of the pathological events with a direct confirmation at the patient's beside.To his merit, Da Monte established the practise of training students to gather the case history, to carry out an objective examination, and to closely examine disease phenomena with lessons at the bedside of the patient. Practical clinical training was thus introduced as the crucial moment in the formation of the physician. PMID:16285087

Franceschetti, Diego; Agazia, Bruno; Zanchin, Giorgio

2005-01-01

484

Security and Privacy in Data Stream Management Systems  

Microsoft Academic Search

Privacy and security in the context of the streaming sys- tems largely have been overlooked. We now tackle this im- portant problem in this paper. Our work focuses on context- aware security and user-centric privacy preservation in da ta stream management systems (DSMS) by exploiting security constraints (called security punctuations) that are dynam - ically embedded into data streams. The

Rimma V. Nehme; Elke A. Rundensteiner; Elisa Bertino

485

The dopaminergic system and aggression in laying hens  

Technology Transfer Automated Retrieval System (TEKTRAN)

The dopaminergic system regulates aggression in humans and other mammals. To investigate if birds with genetic propensity for high and low aggressiveness may exhibit distinctly different aggressive mediation via dopamine (DA) D1 and D2 receptor pathways, two high aggressive (DXL and LGPS) and one lo...

486

Multimedia Information Management in an Object-Oriented Database System  

Microsoft Academic Search

This paper describes the implementation of the Multimedia Information Manager (MIM) in the ORION object-oriented da- tabase system which is operational at MCC. We describe design objectives and implementation techniques that have satisfied the design objectives. Our design objectives in- clude extensibility, flexibility and efficiency in supporting the capture, storage, and presentation of many types of multi- media information. We

Darrell Woelk; Won Kim

1987-01-01

487

A Decision Support System for IST Academic Information  

Microsoft Academic Search

This article describes the Decision Support System (DSS) for Academic Information being developed at Instituto Superior Técnico, the Engineering School of the Technical University of Lisbon. In Portuguese, this project has been given the acronym SADIA (Sistema de Apoio à Decisão da Informação Académica). This paper focuses on the early phases of the DSS development process, i.e., the business requirements

Elsa Cardoso; Helena Galhardas; Maria José Trigueiros; Rito Silva

488

Re-evaluation of the Moyuta geothermal system, Southern Guatemala.  

National Technical Information Service (NTIS)

Chemical and isotopic data from four fumarole sites combined with prefeasibility assessments obtained in the 1970s have resulted in a re-evaluation of the Moyuta geothermal system. Moyuta consists of an east-west trending complex of Quaternary andesite/da...

F. Goff A. Adams P. E. Trujillo D. Counce C. Janik

1991-01-01

489

A real-time nearshore wave and current prediction system  

Microsoft Academic Search

A nearshore wave, tide and current prediction system was demonstrated during the MREA04 Trial in the Portuguese coastal waters near Pinheiro da Cruz during the early spring of 2004. Daily forecasts of regional scale wave and tidal information and nearshore waves and currents were generated in DIOPS utilizing a suite of regional and nearshore models forced with data from meteorological

Richard Allard; James Dykes; Y. L. Hsu; James Kaihatu; Daniel Conley

2008-01-01

490

Managing group behaviors in swarm systems by associations  

Microsoft Academic Search

In this paper, we present a framework for managing group behaviors in multi-agent swarm systems. The framework explores the benefits by integrating stream function based path planning methods with novel artificial potential based flocking methods to realize complex swarming behaviors. A key development is the introduction of a set of flocking by dynamic association (DA) algorithms that effectively deal with

Guohua Ye; Hua O. Wang; Kazuo Tanaka; Zhi-Hong Guan

2006-01-01

491

78 FR 61345 - Privacy Act of 1974; System of Records  

Federal Register 2010, 2011, 2012, 2013

...records, DA&M 01, entitled ``Civil Liberties Program Case Management System...the processing of allegations of civil liberties violations by the DoD, its civilian...CONTACT or at the Defense Privacy and Civil Liberties Office Web site...

2013-10-03

492

Approach of Asteroid 2012 DA14 from Samford Valley Observatory  

NASA Video Gallery

This movie from the Samford Valley Observatory in Brisbane, Australia, shows the progress of asteroid 2012 DA14 across the night sky as it nears its closest approach. It was taken at 12:59 UTC on Feb. 15 (7:59 a.m. EST, or 4:59 a.m. PST). The movie has been sped up 50 times. Credit: J. Bradshaw › Asteroid and Comet Watch site

Anthony Greicius

2013-02-15

493

The DEAR experiment on DA&Fgr;NE  

Microsoft Academic Search

DEAR is one of the first experiments at the new DA&Fgr;NE ?-factory at the Laboratori Nazionali di Frascati dell'INFN. The objective of the DEAR experiment is to perform a precision measurement of the strong interaction shifts and widths of the K-series lines in kaonic hydrogen and the first observation of the same quantities in kaonic deuterium. The aim is to

M. Augsburger; G. Beer; S. Biancoc; A. M. Bragadireanuc; M. Bregant; W. H. Breunlich; M. Cargnelli; D. Chatellard; J.-P. Egger; F. L. Fabbri; B. Gartner; C. Guaraldo; R. S. Hayano; M. Iliescu; T. Ishiwatari; T. M. Ito; M. Iwasaki; R. King; P. Knowles; T. Koike; B. Lauss; V. Lucherini; J. Marton; E. Milotti; F. Mulhauser; S. N. Nakamura; T. Ponta; A. C. Sanderson; L. A. Schaller; L. Schellenberg; H. Schneuwly; R. Seki; D. Tomono; T. Yoneyama; E. Zavattini; J. Zmeskal

2001-01-01

494

A quasi-passive CMOS pipeline D\\/A converter  

Microsoft Academic Search

A novel pipeline digital-to-analog converter configuratio