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1

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

2

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

3

The SEP "robot": a valid virtual reality robotic simulator for the Da Vinci Surgical System?  

PubMed

The aim of the study was to determine if the concept of face and construct validity may apply to the SurgicalSim Educational Platform (SEP) "robot" simulator. The SEP robot simulator is a virtual reality (VR) simulator aiming to train users on the Da Vinci Surgical System. To determine the SEP's face validity, two questionnaires were constructed. First, a questionnaire was sent to users of the Da Vinci system (reference group) to determine a focused user-group opinion and their recommendations concerning VR-based training applications for robotic surgery. Next, clinical specialists were requested to complete a pre-tested face validity questionnaire after performing a suturing task on the SEP robot simulator. To determine the SEP's construct validity, outcome parameters of the suturing task were compared, for example, relative to participants' endoscopic experience. Correlations between endoscopic experience and outcome parameters of the performed suturing task were tested for significance. On an ordinal five-point, scale the average score for the quality of the simulator software was 3.4; for its hardware, 3.0. Over 80% agreed that it is important to train surgeons and surgical trainees to use the Da Vinci. There was a significant but marginal difference in tool tip trajectory (p = 0.050) and a nonsignificant difference in total procedure time (p = 0.138) in favor of the experienced group. In conclusion, the results of this study reflect a uniform positive opinion using VR training in robotic surgery. Concepts of face and construct validity of the SEP robotic simulator are present; however, these are not strong and need to be improved before implementation of the SEP robotic simulator in its present state for a validated training curriculum to be successful . PMID:20437345

van der Meijden, O A J; Broeders, I A M J; Schijven, M P

2010-04-01

4

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.

5

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.

2008-09-15

6

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

7

How to Think Like Leonardo da Vinci  

ERIC Educational Resources Information Center

To be effective and relevant in twenty-first-century learning, art needs to be more inclusive. In this article, the author discusses how teachers can find a good example in Leonardo da Vinci for building an art program. His art, design, and curiosity are the perfect foundation for any art program, at any level. (Contains 3 resources and 3 online…

Caouette, Ralph

2008-01-01

8

[Prostate cancer treatment by da Vinci surgery].  

PubMed

Minimally invasive laparoscopic surgery replaces many open surgery procedures in urology due to its advantages concerning post-operative morbidity. However, the technical challenges and need of learning have limited the application of this method to the work of highly qualified surgeons. The introduction of da Vinci surgical system has offered important technical advantages compared to the laparoscopic surgical procedure. Robot-assisted radical prostatectomy became a largely accepted procedure. It has paved the way for urologists to start other, more complex operations, decreasing this way the operative morbidity. The purpose of this article is to overview the history of robotic surgery, its current and future states in the treatment of the cancer. We present our robot-assisted radical prostatectomy and the results. PMID:25260081

Szabó, Ferenc János; Alexander, de la Taille

2014-09-26

9

Cutaneous Feedback of Planar Fingertip Deformation and Vibration on a da Vinci Surgical Robot  

E-print Network

to the surgeon, our system is composed of a BioTac tactile sensor mounted to one of the robot's slave tools to a da Vinci tool, and a cutaneous device is attached to the robot's corresponding master controllerCutaneous Feedback of Planar Fingertip Deformation and Vibration on a da Vinci Surgical Robot

Siena, Università di

10

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. PMID:21845067

Sait, Khalid H

2011-01-01

11

Tree Branching: Leonardo da Vinci's Rule versus Biomechanical Models  

PubMed Central

This study examined Leonardo da Vinci's rule (i.e., the sum of the cross-sectional area of all tree branches above a branching point at any height is equal to the cross-sectional area of the trunk or the branch immediately below the branching point) using simulations based on two biomechanical models: the uniform stress and elastic similarity models. Model calculations of the daughter/mother ratio (i.e., the ratio of the total cross-sectional area of the daughter branches to the cross-sectional area of the mother branch at the branching point) showed that both biomechanical models agreed with da Vinci's rule when the branching angles of daughter branches and the weights of lateral daughter branches were small; however, the models deviated from da Vinci's rule as the weights and/or the branching angles of lateral daughter branches increased. The calculated values of the two models were largely similar but differed in some ways. Field measurements of Fagus crenata and Abies homolepis also fit this trend, wherein models deviated from da Vinci's rule with increasing relative weights of lateral daughter branches. However, this deviation was small for a branching pattern in nature, where empirical measurements were taken under realistic measurement conditions; thus, da Vinci's rule did not critically contradict the biomechanical models in the case of real branching patterns, though the model calculations described the contradiction between da Vinci's rule and the biomechanical models. The field data for Fagus crenata fit the uniform stress model best, indicating that stress uniformity is the key constraint of branch morphology in Fagus crenata rather than elastic similarity or da Vinci's rule. On the other hand, mechanical constraints are not necessarily significant in the morphology of Abies homolepis branches, depending on the number of daughter branches. Rather, these branches were often in agreement with da Vinci's rule. PMID:24714065

Minamino, Ryoko; Tateno, Masaki

2014-01-01

12

DA VINCI X-PRIZE SPACE PROJECT - MISSION ANALYSIS  

Microsoft Academic Search

In the present article we review engineering and research efforts conducted by a group of volunteers with the help of advanced engineering commercial software (CFD-ACE+, ANSYS, CFD-FASTRAN, Matlab\\/Simulink, Autodesk Inventor, Maple) in support of the da Vinci Project, the first Canadian competitor in the International X Prize Competition. The da Vinci Project has an objective of launching the first commercial

Vladimir Kudriavtsev; Brian Feeney; Max Buneta; James Porcher; Asier Ania; Michael Trauttmansdorff; Ta-Liang Hsu; Marek Krzeminski; Kalman Rooz

13

Appropriate set-up of the da Vinci Surgical System in relation to the location of anterior and middle mediastinal tumors.  

PubMed

The da Vinci® Surgical System (dV) and its later version [da Vinci S® Surgical System (dVS)] have been used only in very few cases in selected thoracic surgical areas in Japan. Recently, we used the dV and dVS for various types of anterior and middle mediastinal tumors in clinical practice. We report our experience, and review the settings which depended on tumor location. Six patients gave written informed consent to undergo robotic surgery using the dV or dVS. We evaluated the feasibility, safety and appropriate settings of this system for the surgical treatment of mediastinal tumors. Tumor dissection was performed by two specialists in thoracic surgery certified to use the dV and dVS, and another specialist who acted as an assistant. We were able to access difficult-to-reach areas like the mediastinum. All the resected tumors were classified as benign tumors histologically. Crucial to the success of these operations was the set-up of the dV, which varied according to the location of mediastinal tumors. Robotic surgery enables various types of mediastinal tumor dissection more safely and easily than conventional video-assisted thoracoscopic surgery (VATS). The dV requires the appropriate set-up configuration, which varies according to the location of the mediastinal tumor. PMID:21081552

Kajiwara, Naohiro; Kakihana, Masatoshi; Kawate, Norihiko; Ikeda, Norihiko

2011-02-01

14

Leonardo da Vinci (1452-1519)  

Microsoft Academic Search

Painter, inventor and polymath, born in Vinci (near Empolia), Italy. Although astronomy does not figure large in Leonardo's works, he realized the possibility of constructing a telescope (`making glasses to see the Moon enlarged'). He suggested that `... in order to observe the nature of the planets, open the roof and bring the image of a single planet onto the

P. Murdin

2000-01-01

15

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

16

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.

17

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.

18

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 by…

Petto, Sarah; Petto, Andrew

2009-01-01

19

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

20

DaVinci's Mona Lisa entering the next dimension.  

PubMed

For several of Leonardo da Vinci's paintings, such as The Virgin and Child with St Anne or the Mona Lisa, there exist copies produced by his own studio. In case of the Mona Lisa, a quite exceptional, rediscovered studio copy was presented to the public in 2012 by the Prado Museum in Madrid. Not only does it mirror its famous counterpart superficially; it also features the very same corrections to the lower layers, which indicates that da Vinci and the 'copyist' must have elaborated their panels simultaneously. On the basis of subjective (thirty-two participants estimated painter-model constellations) as well as objective data (analysis of trajectories between landmarks of both paintings), we revealed that both versions differ slightly in perspective. We reconstructed the original studio setting and found evidence that the disparity between both paintings mimics human binocular disparity. This points to the possibility that the two Giocondas together might represent the first stereoscopic image in world history. PMID:24303752

Carbon, Claus-Christian; Hesslinger, Vera M

2013-01-01

21

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

22

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.

23

Transparency of Vocational Qualifications: The Leonardo da Vinci Approach. CEDEFOP Panorama Series.  

ERIC Educational Resources Information Center

This report gives an overview of the situation of transparency of vocational qualifications by presenting measures introduced at the European Community level and by drawing attention to projects within the Leonardo da Vinci Program dealing with the issue. A 16-page executive summary appears first. Chapter 1 provides general background and aims.…

Bjornavold, Jens; Pettersson, Sten

24

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

25

DaVinci: Dynamically Adaptive Virtual Networks for a Customized Internet  

E-print Network

, such as an enterprise network, a Virtual Private Network (VPNs), or an Internet Service Provider (ISP), and ultimatelyDaVinci: Dynamically Adaptive Virtual Networks for a Customized Internet Jiayue He, Rui Zhang, jrex, chiangm}@princeton.edu ABSTRACT Running multiple virtual networks, customized for different

Singh, Jaswinder Pal

26

da Vinci fluids, catch-up dynamics and dense granular flow.  

PubMed

We introduce and study a da Vinci fluid, a fluid whose dissipation is dominated by solid friction. We analyse the flow rheology of a discrete model and then coarse-grain it to the continuum. We find that the model gives rise to behaviour that is characteristic of dense granular fluids. In particular, it leads to plug flow. We analyse the nucleation mechanism of plugs and their development. We find that plug boundaries generically expand and we calculate the growth rate of plug regions. In systems whose internal effective dynamic and static friction coefficients are relatively uniform we find that the linear size of plug regions grows as (time)¹(/)³ . The suitability of the model to granular materials is discussed. PMID:20668906

Blumenfeld, R; Edwards, S F; Schwartz, M

2010-08-01

27

The handedness of Leonardo da Vinci: A tale of the complexities of lateralisation  

Microsoft Academic Search

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

I. C. McManus; Helena Drury

2004-01-01

28

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

29

Ein Bild hielt uns gefangen: The Da Vinci Code and the Humanae Vitae  

Microsoft Academic Search

This article analyses the understanding of sexuality and women in Dan Brown’s The Da Vinci Code and compares it with the one offered by the Catholic encyclical Humanae Vitae. It does so against the background of the four dimensions of the real as advocated by Todorov and others. The first part\\u000a of the article analyses how, and explains why, by

Daniel Candel Bormann

2007-01-01

30

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

31

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

32

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

33

The proportion of the face in younger adults using the thumb rule of Leonardo da Vinci.  

PubMed

The present study was conducted to examine whether the thumb rule of Leonardo da Vinci could be an objective method in the determination of the natural and artistic proportions of human face. In this study, a sample of 400 subjects (200 male and 200 female, 22-25 years old) was used. Measurements were made of the length of thumb, the length of ear, the approximate distances between the hair line and the glabella or eyebrows, between the glabella or eyebrows and the tip of the nose and the distance between the nose and the chin, and the distance between the ear and the lateral aspect of the eye. The results obtained in the males and females showed significant (p < 0.01) correlations between the length of thumb and the proportions of the face examined in the study. Additionally, the height of the face was found to be almost three times the length of the thumb. However, the measurements obtained from female subjects were on average smaller than those taken from males. The results obtained in this experiment could be of value in understanding of the evaluation of the face for the people working in plastic surgery or art. PMID:8782316

Oguz, O

1996-01-01

34

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

35

The oldest anatomical handmade skull of the world c. 1508: 'the ugliness of growing old' attributed to Leonardo da Vinci.  

PubMed

The author discusses a previously unknown early sixteenth-century renaissance handmade anatomical miniature skull. The small, naturalistic skull made from an agate (calcedonia) stone mixture (mistioni) shows remarkable osteologic details. Dr. Saban was the first to link the skull to Leonardo. The three-dimensional perspective of and the search for the senso comune are discussed. Anatomical errors both in the drawings of Leonardo and this skull are presented. The article ends with the issue of physiognomy, his grotesque faces, the Perspective Communis and his experimenting c. 1508 with the stone mixture and the human skull. Evidence, including the Italian scale based on Crazie and Braccia, chemical analysis leading to a mine in Volterra and Leonardo's search for the soul in the skull are presented. Written references in the inventory of Salai (1524), the inventory of the Villa Riposo (Raffaello Borghini 1584) and Don Ambrogio Mazenta (1635) are reviewed. The author attributes the skull c. 1508 to Leonardo da Vinci. PMID:24853982

Missinne, Stefaan J

2014-06-01

36

Michelangelo in Florence, Leonardo in Vinci.  

ERIC Educational Resources Information Center

Provides background information on the lives and works of Michelangelo and Leonardo da Vinci. Focuses on the artwork of the artists and the museums where their work is displayed. Includes museum photographs of their work. (CMK)

Herberholz, Barbara

2003-01-01

37

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

38

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.

2007-02-01

39

Chemical characterization and source apportionment of fine and coarse particulate matter inside the refectory of Santa Maria Delle Grazie Church, home of Leonardo Da Vinci's "Last Supper".  

PubMed

The association between exposure to indoor particulate matter (PM) and damage to cultural assets has been of primary relevance to museum conservators. PM-induced damage to the "Last Supper" painting, one of Leonardo da Vinci's most famous artworks, has been a major concern, given the location of this masterpiece inside a refectory in the city center of Milan, one of Europe's most polluted cities. To assess this risk, a one-year sampling campaign was conducted at indoor and outdoor sites of the painting's location, where time-integrated fine and coarse PM (PM(2.5) and PM(2.5-10)) samples were simultaneously collected. Findings showed that PM(2.5) and PM(2.5-10) concentrations were reduced indoors by 88 and 94% on a yearly average basis, respectively. This large reduction is mainly attributed to the efficacy of the deployed ventilation system in removing particles. Furthermore, PM(2.5) dominated indoor particle levels, with organic matter as the most abundant species. Next, the chemical mass balance model was applied to apportion primary and secondary sources to monthly indoor fine organic carbon (OC) and PM mass. Results revealed that gasoline vehicles, urban soil, and wood-smoke only contributed to an annual average of 11.2 ± 3.7% of OC mass. Tracers for these major sources had minimal infiltration factors. On the other hand, fatty acids and squalane had high indoor-to-outdoor concentration ratios with fatty acids showing a good correlation with indoor OC, implying a common indoor source. PMID:22070580

Daher, Nancy; Ruprecht, Ario; Invernizzi, Giovanni; De Marco, Cinzia; Miller-Schulze, Justin; Heo, Jong Bae; Shafer, Martin M; Schauer, James J; Sioutas, Constantinos

2011-12-15

40

Feasibility of an endoscopic approach to the axillary nerve and the nerve to the long head of the triceps brachii with the help of the Da Vinci Robot.  

PubMed

Surgery to transfer the axillary nerve and the nerve of the long head of the triceps presents two obstacles: 1) the access portals are not standardized and 2) the nerves are for their larger part approached through large incisions. The goal of this study was to explore the feasibility of an endoscopic microsurgical approach. The posterior aspect of a cadaver shoulder was approached through three communicating mini-incisions. The Da Vinci robot camera was installed on a central trocart, and the instrument arms on the adjacent trocarts. A gas insufflation distended the soft tissues up to the lateral axillary space. The branches of the axillary nerve and the nerve to the long head of the triceps brachii muscle were identified. The dissection of the axillary nerve trunk and its branches was easy. The posterior humeral circumflex veins and artery were dissected as well without any difficulty. Finding the nerve to the long head of the triceps brachii was found to be more challenging because of its deeper location. Robots properties allow performing conventional microsurgery: elimination of the physiologic tremor and multiplication of the movements. They also facilitate the endoscopic approach of the peripheral nerves, as seen in our results on the terminal branches of the axillary nerve and the nerve to the long head of the triceps brachii. PMID:23867724

Porto de Melo, P M; Garcia, J C; Montero, E F de Souza; Atik, T; Robert, E-G; Facca, S; Liverneaux, P-A

2013-09-01

41

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. PMID:23039185

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

2013-01-01

42

VA Informatics and Computing Infrastructure VINCI Organization  

E-print Network

/CDW VINCI Veterans Affairs #12;· Establish a National Research Infrastructure · Develop New Data Privacy language processing? · Increasing demands for more detailed clinical data · Quality Measures · Evidence

43

www.deepsummeracademy.com Da Vinci Engineering  

E-print Network

(DEEP) Summer Academy is an academically rigorous program that nurtures highly motivated grade 9 to 12 and 10th grade students Senior courses for 11th and 12th grade students (See page 10 for course offerings to Friday. The fourth week of DEEP Summer Academy is our popular DEEP Design Week, which focuses

Sislian, J. P.

44

daVinci Code: A Multi-Model Simulation and Analysis Tool for Multi-Body Systems  

E-print Network

, Jeff Trinkle, Binh Nguyen, and Ben Roghani Department of Computer Science Rensselaer Polytechnic are numerically stable and provably convergent. In particular, it has been proven that when the Stewart-Trinkle

Trinkle, Jeff

45

Totally thoracoscopic surgery for the treatment of atrial septal defect without of the robotic Da Vinci surgical system  

PubMed Central

Background More and more surgeons and patients focus on the minimally invasive surgical techniques in the 21st century. Totally thoracoscopic operation provides another minimal invasive surgical option for patients with ASD (atrial septal defect). In this study, we reported our experience of 61 patients with atrial septal defect who underwent totally thoracoscopic operation and discussed the feasibility and safety of the new technique. Methods From January 2010 to October 2012, 61 patients with atrial septal defect underwent totally thoracoscopic closure but not traditional median sternotomy surgery. We divided the 61 patients into two groups based on the operation sequence. The data of group A (the first 30 cases) and group B (the last 31 cases). The mean age of the patients was 35.1?±?12.8 years (range, 6.3 to 63.5 years), and mean weight was 52.7?±?11.9 kg (range, 30.5 to 80 kg). Mean size of the atrial septal defect was 16.8?±?11.3 mm (range, 13 to 39 mm) based on the description of the echocardiography. Results All patients underwent totally thoracoscopy successfully, 36 patients with pericardium patch and 25 patients were sutured directly. 7 patients underwent concomitant tricuspid valvuloplasty with Key technique. No death, reoperation or complete atrioventricular block occurred. The mean time of cardiopulmonary bypass was 68.5?±?19.1 min (range, 31.0 to 153.0 min), the mean time of aortic cross-clamp was 27.2?±?11.3 min (range, 0.0 to 80.0 min) and the mean time of operation was 149.8?±?35.7 min (range, 63.0 to 300.0 min). Postoperative mechanical ventilation averaged 4.9?±?2.5 hours (range, 3.5 to 12.6 hours), and the duration of intensive care unit stay 20.0?±?4.8 hours (range, 15.5 to 25 hours). The mean volume of blood drainage was 158?±?38 ml (range, 51 to 800 ml). No death, residual shunt, lung atelectasis or moderate tricuspid regurgitation was found at 3-month follow-up. Conclusion The totally thoracoscopic operation is feasible and safe for patients with ASD, even with or without tricuspid regurgitation. This technique provides another minimal invasive surgical option for patients with atrial septal defect. PMID:23634811

2013-01-01

46

Building Systems: Passing Fad or Basic Tool?  

ERIC Educational Resources Information Center

Building systems can be traced back to a 1516 A.D. project by Leonardo da Vinci and to a variety of prefabrication projects in every succeeding century. When integrated into large and repetitive spatial units through careful design, building systems can produce an architecture of the first order, as evidenced in the award winning design of…

Rezab, Donald

47

Putting Dreyfus into Action: The European Credit Transfer System  

ERIC Educational Resources Information Center

Purpose: The purpose of this article is to look closely at the development of a European Credit Transfer System for Vocational Education and Training (ECVET). The European Commission, together with the member States, are working on it and several pilot projects have been initiated within the Leonardo da Vinci Programme of the European Commission.…

Markowitsch, Jorg; Luomi-Messerer, Karin; Becker, Matthias; Spottl, Georg

2008-01-01

48

Putting Dreyfus into action: the European credit transfer system  

Microsoft Academic Search

Purpose – The purpose of this article is to look closely at the development of a European Credit Transfer System for Vocational Education and Training (ECVET). The European Commission, together with the member States, are working on it and several pilot projects have been initiated within the Leonardo da Vinci Programme of the European Commission. The problem of the transfer

Jörg Markowitsch; Karin Luomi-Messerer; Matthias Becker; Georg Spöttl

2008-01-01

49

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

50

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.

51

[Operation-assisted Robot·da Vinci( Lung)].  

PubMed

The most favorable advantage of robotic surgery is the markedly free movement of joint-equipped robotic forceps under 3-dimensional high-vision. Accurate operation makes complex procedures straightforward and may overcome weak points of previous thoracoscopic surgery. The efficiency and safety improves with acquiring skills. However, the spread of robotic surgery in the general thoracic surgery field has been delayed compared to those in other fields. The surgical indications include primary lung cancer, thymic diseases, and mediastinal tumors, but it is unclear whether technical advantages felt by operators are directly connected to merits for patients. Moreover, problems concerning the cost and education have not been solved. Although evidence is insufficient for robotic thoracic surgery, it may be an extension of thoracoscopic surgery, and reports showing its usefulness for primary lung cancer, myasthenia gravis, and thymoma have been accumulating. Now, important thing is to carry out clinical trial for advanced medical care and insurance acquisition. Although it is necessary to solve important problems such as safety, education, training, the cost for the future development, advancing robot technology has a possibility to markedly change general thoracic surgery. PMID:25138949

Nakamura, Hiroshige; Taniguchi, Yuji

2014-07-01

52

78 FR 58376 - American Asset Development, Inc., aVinci Media Corp., Ceragenix Pharmaceuticals, Inc., Marshall...  

Federal Register 2010, 2011, 2012, 2013

...aVinci Media Corp., Ceragenix Pharmaceuticals, Inc., Marshall Holdings International, Inc., MedCom USA, Incorporated...current and accurate information concerning the securities of Marshall Holdings International, Inc. because it has not filed...

2013-09-23

53

[Application and expectation of robot-assisted operation system in gastrointestinal surgery].  

PubMed

With the development of minimally invasive surgery in China, the da Vinci surgical system was used more and more widely in gastrointestinal surgery. This paper summarizes the development history of the artificial intelligence-assisted surgery system, the application and in the promotion of gastrointestinal surgery in China. Application of this new technology promotes further the innovation and development of minimally invasive surgery, and will drive leap in the field of gastrointestinal minimally invasive surgery. PMID:23072013

Du, Xiao-hui; Ning, Ning

2012-08-01

54

Leonardo da EmileTruijen  

E-print Network

Stevin Lect. room B Isaac Newton Lect. room C Daniel Bernoulli Lect. room D James Wa L.r.JCoenraad Stork L laboratories Departments Levels A Leonardo da Vinci - 6 gf B Isaac Newton - 6 gf C Daniel Bernoulli - 6 gf D

Lindken, Ralph

55

[A role of robotic-assisted surgery to preserve female fertility? Comments about the first paratubal cystectomy performed with the "Da Vinci S" robotic system in a young girl].  

PubMed

In the field of adnexal surgeries in children, robotic surgery seems to make easier the realization of minimal invasive surgery. It could lead to a decrease of post-surgical adherences and therefore preserve the fertility of young patients. We report the first paratubal cystectomy performed using robotic assistance on a child in order to preserve her future fertility and discuss advantages and disadvantages of this technology. PMID:20875765

Delotte, J; Breaud, J; Mialon, O; Verger, S; Bongain, A

2010-10-01

56

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.

57

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.

58

Leonardo da Vinci, 1452-1519 Perhaps the smartest person ever  

E-print Network

, folio 76 v. Biblioteca Ambrosiana di Milano) #12;Galileo Galilei (Pisa, 1564 - Arcetri, 1642): Discorsi of falling bodies, a law deduced by Galileo's experiments and enunciated by Torricelli in 1642. constant 2 1

Ballarini, Roberto

59

In Pursuit of Social Betterment: A Proposal to Evaluate the Da Vinci Learning Model  

ERIC Educational Resources Information Center

The author presents a proposal that is roughly based on a contingency-based theory of evaluation developed in his book, "Evaluation: An Integrated Framework for Understanding, Guiding, and Improving Policies and Programs" (Mark, Henry, and Julnes, 2000). He and his coauthors stated in this book that social betterment was the ultimate goal of…

Henry, Gary T.

2005-01-01

60

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

2013-01-01

61

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

62

Fermilab`s DART DA system  

SciTech Connect

DART is the new data acquisition system designed and implemented for six Fermilab experiments by the Fermilab Computing Division and the experiments themselves. The complexity of the experiments varies greatly. Their data taking throughput and event filtering requirements range from a few (2-5) to tens (80) of CAMAC, FASTBUS and home built front end crates; from a few 100 KByte/sec to 160 MByte/sec front end data collection rates; and from 0-3000 Mips of level 3 processing. The authors report on the architecture and implementation of DART to this date, and the hardware and software components that are being developed and supported.

Pordes, R.; Anderson, J.; Berg, D.; Black, D.; Forster, R.; Franzen, J.; Kent, S.; Kwarciany, R.; Meadows, J.; Moore, C. [and others

1994-04-01

63

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. The purpose of this report is to present a framework or architecture for creating a R/DA system and provide some insights associated with its design and utilization. To improve understanding and clarify subsequent discussion, the goals and requirements for the major R/DA system components, namely, the database and interface modules, are initially presented along with the identification of important concepts and the definition of critical terms. Next high-level functions relating the types of inputs to the outputs of the R/DA interface module are introduced and discussed. Then the relationships between the major R/DA modules and the primary components associated with its creation and maintenance are presented and analyzed. Finally, some conclusions are drawn relative to the advantages associated with developing a R/DA system for use in implementing an enterprise-wide, work-facilitating information system.

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

1999-11-01

64

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

65

X CONVEGNO ANNUALE CODAU 2012 Segreteria Codau c/o Politecnico di Milano Piazza Leonardo da Vinci, 32 20133 Milano  

E-print Network

"Globalizzazione, Stato e Università" a cura di Franco DE FELICE, Capo Redattore RAI Regione Toscana VENERD� 21'Università per il rilancio del Paese" Intervengono: Stella TARGETTI, Vice Presidente Regione Toscana Confindustria Toscana Coordina Graziano DRAGONI, Direttore Generale Politecnico di Milano Dibattito

Schettini, Raimondo

66

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

67

The DaVincis of dirt: Geoarchaeological perspectives on Native American mound building in the Mississippi River basin  

Microsoft Academic Search

The complexity of mound construction, as revealed through geoarchaeological analyses, indicates the cultural significance of mounds may be as well reflected in the earthen construction materials and their arrangement, as it is in the artifacts abandoned on their summits. We use geoarchaeological examples from three sites in the Mississippi River basin, Shiloh Mounds, Cahokia, and Poverty Point, to advocate a

Sarah C. Sherwood; Tristram R. Kidder

2011-01-01

68

SBS TDMA-DA system with VAC and DAC  

NASA Astrophysics Data System (ADS)

This paper describes many of the design considerations involved in developing the demand assignment (DA) subsystem of the TDMA satellite communication system for Satellite Business Systems. Each earth station has a satellite communications controller (SCC) which requests capacity to meet current voice and data traffic demands. A central reference station frequently reallocates capacity based on the requests of all the earth stations in a network. To minimize the amount of satellite capacity required, the SCC has a circuit-switching capability for voice calls as well as for digital data calls. Furthermore, the SCC employs voice activity compression (VAC) and data activity compression (DAC), in which the amount of capacity requested is based on measured average speech activity as well as the number of off-hook voice ports and the number of off-hook data ports. Data calls are queued on a first-come, first-served basis when capacity is not immediately available. The reference station distributes excess capacity according to a nonlinear table lookup procedure so that the voice call blocking probability is equalized across the network. The DA system makes much more efficient use of satellite transmission capacity than a design with fixed-capacity trunk routes.

Goode, B.

1984-11-01

69

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

70

Adventures in Modeling: Exploring Complex, Dynamic Systems with StarLogo.  

ERIC Educational Resources Information Center

For thousands of years people from da Vinci to Einstein have created models to help them better understand patterns and processes in the world around them. Computers make it easier for novices to build and explore their own models and learn new scientific ideas in the process. This book introduces teachers and students to designing, creating, and…

Colella, Vanessa Stevens; Klopfer, Eric; Resnick, Mitchel

71

Design of an eLearning System for Accreditation of Non-formal Learning  

E-print Network

-formal learning in vocational education, and the role of ICT for providing appropriate accreditation model in such education. The presented conclusions are based on the Leonardo da Vinci project LeoSPAN. The paper as well. The existence of non-formal learning that is not provided by an education or training institution

Paris-Sud XI, Université de

72

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

73

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

74

Transoral Robotic Surgery of the Skull Base: A Cadaver and Feasibility Study  

Microsoft Academic Search

Objective: The goal of this study was to determine the potential role as well as the current limitations of the da Vinci Surgical System robot in transoral surgery of the skull base. Methods: The da Vinci robot was used to perform dissections of the skull base on 7 cadaver heads with their neck and clavicles intact. Neurosurgeons and otolaryngologists familiar

John Y. K. Lee; Jason G. Newman; Gregory S. Weinstein; Bradley Lega; Jason Diaz; M. Sean Grady

2010-01-01

75

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

76

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

77

UBC Social Ecological Economic Development Studies (SEEDS) Student Report Ubc Food System Project: Food Waste Management The Hot Beverage Cup  

E-print Network

: Food Waste Management ­ The Hot Beverage Cup Vinci Ching, Paul Gazzola, Karen Juzkow, Kenrick Kan, Tina of a project/report". #12;AGSC 450 UBC FOOD SYSTEM PROJECT: FOOD WASTE MANAGEMENT ­ THE HOT BEVERAGE CUP GROUP #12;ABSTRACT This report aims to evaluate the current practices of waste management at UBC

78

Robotic-Assisted Hysterectomy  

MedlinePLUS Videos and Cool Tools

... surgeon independence. The da Vinci system is a computer-enhanced surgical system. There is a master-slave ... appreciate on the television monitor or on the computer screen but really makes a big difference in ...

79

WORKFLOWS IN CONTENT MANAGEMENT SYSTEMS Pedro Pico and Alberto Rodrigues da Silva  

E-print Network

: Workflow is a popular concept in nowadays. Organizations try to implement Workflows that are flexible supports Workflow, organizations may take advantage, becoming more agile, flexible and dynamic, whileWORKFLOWS IN CONTENT MANAGEMENT SYSTEMS Pedro Pico and Alberto Rodrigues da Silva Instituto

da Silva, Alberto Rodrigues

80

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

81

The next generation of the ATLAS PanDA Monitoring System  

E-print Network

For many years the PanDA Workload Management System has been the basis for distributed production and analysis for the ATLAS experiment at the LHC. Since the start of data taking PanDA usage has ramped up steadily, with up to 1M completed jobs/day in 2013. The associated monitoring data volume has been rising as well, to levels that present a new set of challenges in the areas of database scalability and monitoring system performance and efficiency. Outside of ATLAS, the PanDA system is also being used in projects like AMS, LSST and a few others. It currently undergoes a significant redesign, both of the core server components responsible for workload management, brokerage and data access, and of the monitoring part, which is critically important for efficient execution of the workflow in a way that’s transparent to the user and also provides an effective set of tools for operational support. The new generation of the PanDA Monitoring Service is designed based on a proven, scalable, industry-standard Web Fr...

Schovancova, J; The ATLAS collaboration; Klimentov, A; Love, P; Potekhin, M; Wenaus, T

2014-01-01

82

Improving the Effectiveness of Collaborative Recommendation with Ontology-Based User Profiles  

E-print Network

and Retrieval]: Information Search and Retrieval--Information Filtering General Terms Algorithms, Design, Experimentation Keywords Recommender systems, collaborative filtering, ontology-based user profiles 1 ("Da Vinci Code"), books on computer science topics ("Python Programming") for work-related purposes

Burke, Robin

83

Robotic-Assisted Laparoscopic Sacrocolpopexy for Vaginal Vault Prolapse  

MedlinePLUS

... Medical Center will perform the state of the art procedure to surgically correct vaginal vault prolapse by ... webcast from Duke University. Today we will be performing a robotic sacrocolpopexy using the da Vinci S system. ...

84

PanDA Beyond ATLAS : A Scalable Workload Management System For Data Intensive Science  

E-print Network

The LHC experiments are today at the leading edge of large scale distributed data-intensive computational science. The LHC's ATLAS experiment processes data volumes which are particularly extreme, over 140 PB to date, distributed worldwide at over of 120 sites. An important element in the success of the exciting physics results from ATLAS is the highly scalable integrated workflow and dataflow management afforded by the PanDA workload management system, used for all the distributed computing needs of the experiment. The PanDA design is not experiment specific and PanDA is now being extended to support other data intensive scientific applications. PanDA was cited as an example of "a high performance, fault tolerant software for fast, scalable access to data repositories of many kinds" during the "Big Data Research and Development Initiative" announcement, a 200 million USD U.S. government investment in tools to handle huge volumes of digital data needed to spur science and engineering discoveries. In this talk...

Borodin, M; The ATLAS collaboration; Jha, S; Golubkov, D; Klimentov, A; Maeno, T; Nilsson, P; Oleynik, D; Panitkin, S; Petrosyan, A; Schovancova, J; Vaniachine, A; Wenaus, T

2014-01-01

85

Spacelab data processing facility (SLDPF) quality assurance (QA)/data accounting (DA) expert systems - Transition from prototypes to operational systems  

NASA Technical Reports Server (NTRS)

The SLDPF is responsible for the capture, quality monitoring processing, accounting, and shipment of Spacelab and/or Attached Shuttle Payloads (ASP) telemetry data to various user facilities. Expert systems will aid in the performance of the quality assurance and data accounting functions of the two SLDPF functional elements: the Spacelab Input Processing System (SIPS) and the Spacelab Output Processing System (SOPS). Prototypes were developed for each as independent efforts. The SIPS Knowledge System Prototype (KSP) used the commercial shell OPS5+ on an IBM PC/AT; the SOPS Expert System Prototype used the expert system shell CLIPS implemented on a Macintosh personal computer. Both prototypes emulate the duties of the respective QA/DA analysts based upon analyst input and predetermined mission criteria parameters, and recommended instructions and decisions governing the reprocessing, release, or holding for further analysis of data. These prototypes demonstrated feasibility and high potential for operational systems. Increase in productivity, decrease of tedium, consistency, concise historical records, and a training tool for new analyses were the principal advantages. An operational configuration, taking advantage of the SLDPF network capabilities, is under development with the expert systems being installed on SUN workstations. This new configuration in conjunction with the potential of the expert systems will enhance the efficiency, in both time and quality, of the SLDPF's release of Spacelab/AST data products.

Basile, Lisa

1988-01-01

86

Spacelab data processing facility (SLDPF) Quality Assurance (QA)/Data Accounting (DA) expert systems: Transition from prototypes to operational systems  

NASA Technical Reports Server (NTRS)

The SLDPF is responsible for the capture, quality monitoring processing, accounting, and shipment of Spacelab and/or Attached Shuttle Payloads (ASP) telemetry data to various user facilities. Expert systems will aid in the performance of the quality assurance and data accounting functions of the two SLDPF functional elements: the Spacelab Input Processing System (SIPS) and the Spacelab Output Processing System (SOPS). Prototypes were developed for each as independent efforts. The SIPS Knowledge System Prototype (KSP) used the commercial shell OPS5+ on an IBM PC/AT; the SOPS Expert System Prototype used the expert system shell CLIPS implemented on a Macintosh personal computer. Both prototypes emulate the duties of the respective QA/DA analysts based upon analyst input and predetermined mission criteria parameters, and recommended instructions and decisions governing the reprocessing, release, or holding for further analysis of data. These prototypes demonstrated feasibility and high potential for operational systems. Increase in productivity, decrease of tedium, consistency, concise historial records, and a training tool for new analyses were the principal advantages. An operational configuration, taking advantage of the SLDPF network capabilities, is under development with the expert systems being installed on SUN workstations. This new configuration in conjunction with the potential of the expert systems will enhance the efficiency, in both time and quality, of the SLDPF's release of Spacelab/AST data products.

Basile, Lisa

1988-01-01

87

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

2012-12-18

88

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

89

Vadose zone characterisation of a hydrogeologic system in a mountain region: Serra da Estrela case study (Central Portugal)  

Microsoft Academic Search

Understanding the role of the vadose zone is essential to accurately assess hydrogeo- logical systems and their respective groundwater resources. The study area (Manteigas - Nave de Santo António - Torre sector, Serra da Estrela Mountain, Central Portugal), presents specific geological, morphotectonic and climatic characteristics which influence the hydrogeological regime. The vadose zone has particular features that contribute to control

Jorge Espinha Marques; João M. Duarte; Alfredo T. Constantino; Afonso Martins; Carlos Aguiar; Fernando T. Rocha; Manuela Inácio; José M. Marques; Helder I. Chaminé; José Teixeira; Javier Samper; Frederico S. Borges; José M. Carvalho

90

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

91

[The "myologie dynamique" by Girolamo Fabrizi da Aquapendente in the scientific language in the Renaissance age (XVI-XVII)].  

PubMed

Beginning from the XV century, mechanical materialism underwent an evolution in "biological mechanics" within the scientific doctrine. Among the greatest exponents of this new current there were two Italian men, Leonardo da Vinci (1452-1519) and Girolamo da Acquapendente (1533-1619). By the trend given by Leonardo, the myology, instead of being a static science, took a dynamic meaning and valence. Later, Fabrizi resumed and investigated the subject above all in its less known expression, elaborating an original theory. With Acquapendente, the anatomy lost its merely descriptive pecularity and evolved in analysis of the structure in connection with the function. Moreover, he opposed the syllogism against the mechanic language and the mathematical formulation. A new scientific way will be afterwards characterized by Galileo Galilei in the field of the physics and by Giovanni Alfonso Borrelli in the biology. PMID:11640090

Stroppiana, L

1989-01-01

92

Clip and Save.  

ERIC Educational Resources Information Center

Focuses on the facial expression in the "Mona Lisa" by Leonardo da Vinci. Offers background information on da Vinci as well as learning activities for students. Includes a reproduction of the "Mona Lisa" and information about the painting. (CMK)

Hubbard, Guy

2003-01-01

93

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

94

Extended indications for robotic surgery for posterior mediastinal tumors.  

PubMed

Previously, we evaluated use of the da Vinci Surgical System for anterior and middle mediastinal tumors in clinical cases, focusing on feasibility, safety, and appropriate settings. In this study, we evaluated extending the indications for robotic surgical treatment of posterior mediastinal tumors to include those located adjacent to the upper vertebrae or aorta. Three patients with mediastinal tumors located immediately adjacent to the vertebrae or aorta, underwent resection with the da Vinci Surgical System. All resected tumors were benign histologically. Robotic surgery enabled treatment of tumors located in the posterior mediastinum, which are very difficult to reach, making resection with the conventional video-assisted thoracoscopic surgery technique extremely difficult. All procedures were performed safely, smoothly, and extremely precisely. Crucial to the success of these operations were the appropriate placement and angle of the special da Vinci surgical ports in relation to the target and the patient's position, which varied according to the tumor location. PMID:22718720

Kajiwara, Naohiro; Kakihana, Masatoshi; Usuda, Jitsuo; Ohira, Tatsuo; Kawate, Norihiko; Ikeda, Norihiko

2012-06-01

95

A Flexible Pressure Monitoring System for Pressure Ulcer Prevention Marcus Yip, David Da He, Eric Winokur, Amanda Gaudreau Balderrama, Robert Sheridan and Hongshen Ma  

E-print Network

A Flexible Pressure Monitoring System for Pressure Ulcer Prevention Marcus Yip, David Da He, Eric Winokur, Amanda Gaudreau Balderrama, Robert Sheridan and Hongshen Ma Abstract-- Pressure ulcers and the elderly. In this work, a flexible pressure monitoring system for pressure ulcer prevention has been

Ma, Hongshen

96

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.

97

Small D-?-A systems with o-phenylene-bridged accepting units as active materials for organic photovoltaics.  

PubMed

Donor-acceptor (D-?-A) systems that combine triarylamine donor blocks and dicyanovinyl (DCV) acceptor groups have been synthesized. Starting from the triphenylamine (TPA)-thiophene-DCV compound (1) as a reference system, various synthetic approaches have been developed for controlling the light-harvesting properties and energy levels of the frontier orbitals in this molecule. Thus, the introduction of methoxy groups onto TPA, the replacement of one phenyl ring of TPA by a thiophene ring, or the extension of the ?-conjugating spacer group lead to the modulation of the HOMO level. On the other hand, the fusion of the DCV group onto the vicinal thiophene ring by an ortho-phenylene bridge allows for a specific fine-tuning of the LUMO level. The electronic properties of the molecules were analyzed by using UV/Vis spectroscopy and cyclic voltammetry and the compounds were evaluated as donor materials in basic bilayer planar heterojunction solar cells by using C60 as acceptor material. The relationships between the electronic properties of the donors and the performance of the corresponding photovoltaic devices are discussed. Bilayer planar heterojunction solar cells that used reference compound 1 and C70 afforded power-conversion efficiencies of up to 3.7?%. PMID:23776042

Leliège, Antoine; Grolleau, Jérémie; Allain, Magali; Blanchard, Philippe; Demeter, Dora; Rousseau, Théodulf; Roncali, Jean

2013-07-22

98

Robotic surgical education: A systematic approach to training urology residents to perform robotic-assisted laparoscopic radical prostatectomy  

Microsoft Academic Search

ObjectivesRobotic-assisted surgery using the da Vinci Surgical System is gaining popularity among urologists. However, training residents to use this system presents new challenges for surgical educators. We describe a method for training residents to perform robotic-assisted radical prostatectomy.

Hani H. Rashid; Yuk-Yuen M. Leung; Megan J. Rashid; Gregory Oleyourryk; John R. Valvo; Louis Eichel

2006-01-01

99

Wide-angle ITER-prototype tangential infrared and visible viewing system for DIII-Da)  

NASA Astrophysics Data System (ADS)

An imaging system with a wide-angle tangential view of the full poloidal cross-section of the tokamak in simultaneous infrared and visible light has been installed on DIII-D. The optical train includes three polished stainless steel mirrors in vacuum, which view the tokamak through an aperture in the first mirror, similar to the design concept proposed for ITER. A dichroic beam splitter outside the vacuum separates visible and infrared (IR) light. Spatial calibration is accomplished by warping a CAD-rendered image to align with landmarks in a data image. The IR camera provides scrape-off layer heat flux profile deposition features in diverted and inner-wall-limited plasmas, such as heat flux reduction in pumped radiative divertor shots. Demonstration of the system to date includes observation of fast-ion losses to the outer wall during neutral beam injection, and shows reduced peak wall heat loading with disruption mitigation by injection of a massive gas puff.

Lasnier, C. J.; Allen, S. L.; Ellis, R. E.; Fenstermacher, M. E.; McLean, A. G.; Meyer, W. H.; Morris, K.; Seppala, L. G.; Crabtree, K.; Van Zeeland, M. A.

2014-11-01

100

Diameter determinations from VINCI using global  

E-print Network

at least 15 times and on at least 5 separate nights, providing a fruitful database for cross, is challenged in the present work. No a priori diameters are input to the algorithm, which relies on baseline departures from that model. In about 20 cases, we detect a "zero- baseline power" significantly smaller than

Meisner, Jeff

101

Electrolytic Silicone Bourdon Tube Microactuator for Reconfigurable Surgical Robots  

E-print Network

applications will be enabled by a new kind of surgical tool, capable of entering the human body through natural. INTRODUCTION Large robots for minimally invasive surgery (MIS) are already at the clinical stage (e.g. Da Vinci of imaging, diagnostics tools, etc., into existing systems [1], [2], [3]. These machines are designed

Webster III, Robert James

102

The Tendon Network of the Fingers Performs Anatomical Computation at a Macroscopic Scale  

Microsoft Academic Search

Current thinking attributes information processing for neuromuscular control exclusively to the nervous system. Our cadaveric experiments and computer simulations show, however, that the tendon network of the fingers performs logic computation to preferentially change torque production capabilities. How this tendon network propagates tension to enable manipulation has been debated since the time of Vesalius and DaVinci and remains an unanswered

Francisco J. Valero-Cuevas; Jae-Woong Yi; Daniel Brown; Robert V. McNamara; Chandana Paul; Hood Lipson

2007-01-01

103

Development of robotic program: an Asian experience  

Microsoft Academic Search

Robotic surgery was started in the Department of Urology, Hospital Kuala Lumpur, in April 2004. We present our experience in developing the program and report the results of our first 50 cases of robotic radical prostatectomy. A three-arm da Vinci™ robotic system was installed in our hospital in March 2004. Prior to installation, the surgeons underwent training at various centers

R. M. Sahabudin; T. Arni; N. Ashani; K. Arumuga; S. Rajenthran; S. Murali; V. Patel; A. Hemal; M. Menon

2006-01-01

104

Robotic atrial septal defect repair and endoscopic treatment of atrial fibrillation  

Microsoft Academic Search

Computer (robotic) enhancement has emerged as a facilitator of minimally invasive cardiac surgery and has been used to perform portions of intracardiac procedures via thoracotomy incisions. This report describes the use of the da Vinci surgical system in two totally endoscopic (“closed chest”) cardiac operations: atrial septal defect closure and pulmonary vein isolation of atrial fibrillation. ASD closure: Fifteen patients

Michael Argenziano; Mathew R. Williams

2003-01-01

105

44 Telerobotics: Its Future in Clinical Application  

E-print Network

such that as of this writing over 50% of all prostatectomies in the United States are done robotically [1]. Observing Children's Hospital, Seattle, WA, USA 2 Department of Computer Engineering, Jack Baskin School was then left to the private sector. The initial da Vinci system was marketed to cardiac surgeons because

Rosen, Jacob

106

Work in progress: E-Learning Impact on Romanian Maritime Education  

Microsoft Academic Search

The introduction of modern technologies in the education system has been a main concern of all Romanian education institutions. This paper describes the preliminary developments of a Leonardo da Vinci European project that involves creative pilot programs for junior officers on board tankers. The paper discusses also the project plan and the main steps in which distant learning are being

Mariana Jurian; Laurentiu Chiotoroiu; Martha Buibas

2006-01-01

107

Advanced thoracoscopic procedures are facilitated by computer-aided robotic technology  

Microsoft Academic Search

Objective: Computer (robotic) enhancement has been used to facilitate simple thoracoscopic procedures such as internal mammary artery (IMA) mobilization. This report describes the use of robotic technology in advanced thoracoscopic procedures. Methods: Ten patients underwent advanced thoracoscopic procedures utilizing the Da Vinci robotic surgical system (Intuitive Surgical, Mountain View, CA) at our institution. Results: Patients 1–6 underwent endoscopic phrenic nerve

Jeffrey A. Morgan; Mark E. Ginsburg; Joshua R. Sonett; David L. S. Morales; Takushi Kohmoto; Lyall A. Gorenstein; Craig R. Smith; Michael Argenziano

2003-01-01

108

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

109

Robotic Laparoendoscopic Single-Site Surgery Using GelPort as the Access Platform  

Microsoft Academic Search

BackgroundLaparoendoscopic single-site surgery (LESS) allows for the performance of major urologic procedures with a single small incision and minimal scarring. The da Vinci Surgical System provides advantages of easy articulation and improved ergonomics; however, an ideal platform for these procedures has not been identified.

Robert J. Stein; Wesley M. White; Raj K. Goel; Brian H. Irwin; George Pascal Haber; Jihad H. Kaouk

2010-01-01

110

Synthetic delivery system for tuberculosis vaccines: immunological evaluation of the M. tuberculosis 38 kDa protein entrapped in biodegradable PLG microparticles.  

PubMed

Tuberculosis remains a major public health burden which could be ameliorated by effective and well-defined subunit vaccines, particularly because the protective efficacy of current M. bovis BCG vaccines is both unpredictable and variable. The immunodominant 38 kDa antigen from Mycobacterium tuberculosis was entrapped in biodegradable poly (DL-lactide co-glycolide) (PLG) microparticles which served as a delivery system. Both cellular and humoral immune responses were assessed and compared with those obtained after immunization with the 38 kDa protein emulsified in incomplete Freund's adjuvant (IFA). Vaccination of mice with a single dose of antigen-loaded microparticles resulted in specific IgG titres peaking after five weeks comparable to those achieved after vaccination with protein emulsified in incomplete Freund's adjuvant (IFA). T-cell responses were found to be superior to those induced with antigen/IFA. The T- and B-cell epitope specificities ad judged with synthetic peptides were identical following immunization with antigen in microparticles or IFA. Differences in adjuvanticity were revealed by measuring antigen-specific IgG1, IgG2a and antigen-induced IFN-gamma secretion in vitro: substantially higher titres of IgG2a were observed following immunization with antigen/microparticles than with 38 kDa protein/IFA. This was paralleled by a tenfold higher secretion of IFN-gamma in mice injected with antigen/microparticles. Reduction in colony-forming units was not consistent in mice immunized with 38 kDa protein entrapped in microparticles which were subsequently infected with live tubercle bacilli. Taken together these results indicate that biodegradable PLG microparticles constitute a favorable candidate vaccine delivery system worthy of further assessment in the quest to develop better and defined agents protecting against tuberculosis. PMID:8578845

Vordermeier, H M; Coombes, A G; Jenkins, P; McGee, J P; O'Hagan, D T; Davis, S S; Singh, M

1995-11-01

111

Phosphorus in agroforestry systems : a contribution to sustainable agriculture in the Zona da Mata of Minas Gerais, Brazil  

Microsoft Academic Search

The Zona da Mata is a region situated in the domain of the Atlantic Coastal Rainforest in the southeast of the state of Minas Gerais, Brazil. This domain stretches along the Brazilian coast from north to south and ranks among the top five of the 25 biodiversity hotspots, the richest and the most threatened reservoirs of plant and animal life

I. M. Cardoso

2002-01-01

112

[Sedation concepts with volatile anaesthetics in intensive care: practical use and current experiences with the AnaConDa system].  

PubMed

The use of volatile anaesthetics in intensive care medicine has so far been limited by the lack of equipment suitable for daily routine use and the need for an anaesthetic machine. The new Anaesthetic Conserving Device (AnaConDa) enables the routine use of volatile anaesthetics for long-term sedation via intensive care ventilators. The Anaesthetic Conserving Device replaces the common heat and moisture exchanger in the ventilation circuit. The volatile anaesthetic is continuously applied in liquid status via a syringe pump to a form of mini-vaporiser where the anaesthetic agent is vaporised. The expired anaesthetic gas is stored in the carbon filter and approximately 90% of the gas is resupplied into the breathing cycle. The current experiences suggest that volatile anaesthetics present an alternative for long-term sedation in intensive care units, providing optimised pathways, from a medical as well as from an economical point of view. It must, however, be emphasized that the use of volatile anaesthetics for longer periods of time is an off-label use and should only undertaken by medical professionals at their own risk. PMID:18839123

Kompardt, J; Schärff, K; Kubosch, K; Pohl, C; Bomplitz, M; Soukup, J

2008-12-01

113

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. PMID:23800302

2013-01-01

114

408 D.A. BAU and J. LEE uncertainties characterizing the subsurface system (e.g. heterogeneous geological settings,  

E-print Network

was to minimize the cost of well operation, which included also a penalty term, called "recourse", proportional, a "risk cost" directly proportional to the probability of not complying with prescribed management targets of groundwater supply systems in confined aquifers known with uncertainty. The focus is on the hydraulic

Bau, Domenico A.

115

Pollination and breeding system of Couepia uiti (Mart. and Zucc.) Benth (Chrysobalanaceae) in the Pantanal da Nhecolândia.  

PubMed

The pollination biology and breeding system of Couepia uiti was studied. In this species, flowers opened at 06:00 AM anthesis, and nectar production began at around 0800 h, reached a maximum volume from 09:30 AM to 10:30 AM, and decreased thereafter. The nectar sugar concentration increased continuously, but showed an abrupt increase from 10:00 AM to 12:00 AM. Pollen release occurred at about 09:30 AM and was quickly collected. The stigmas became receptive at around 12:00 AM. The pollinators of C. uiti included the bees Apis mellifera, Xylocopa sp. and Bombus sp., and three species of wasps. This conclusion was based on the observation that these hymenopterans had C. uiti pollen on their bodies, visited the receptive flowers, and touched the anthers and stigmas, thereby promoting pollination. Of these floral visitors, A. mellifera was considered to be the most efficient pollinator. However, mixed pollination also occurred. The number of C. uiti flowers visited in the morning (n = 52) was three times smaller than in the afternoon (n = 62), and the species richness of floral visitors was also bigger in the afternoon (eight in the afternoon versus five in the morning). This finding indicated that these floral visitors preferred to exploit nectar rather than pollen. Controlled pollination experiments showed that C. uiti was a self-incompatible species that produced fruits only by cross-pollination. Treatments such as agamospermy and spontaneous and self-pollinations did not produce fruits. PMID:18278325

Paulino-Neto, H F

2007-11-01

116

Exploring Leonardo  

NSDL National Science Digital Library

This online exhibit on Leonardo da Vinci includes references and activities about both his scientific and artistic work. The site is divided into several sections, with each section offering background information about da Vinci, links to more in depth articles and classroom activities.

1997-01-01

117

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

118

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. PMID:9538858

Johnston, P

1998-01-01

119

On the trail of Leonardo.  

PubMed

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. PMID:9538858

Johnston, P

1998-03-24

120

[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

121

Design of the Digital Sky Survey DA and online system---A case history in the use of computer aided tools for data acquisition system design  

SciTech Connect

As part of its expanding Astrophysics program, Fermilab is participating in the Digital Sky Survey (DSS). Fermilab is part of a collaboration involving University of Chicago, Princeton University, and the Institute of Advanced Studies (at Princeton). DSS main results will be a photometric imaging survey and a redshift survey of galaxies and color-selected quasars over {pi} steradians of the Northern Galactic Cap. This paper focuses on our use of Computer Aided Software Engineering (CASE) in specifying the data system for DSS. Extensions to standard'' methodologies were necessary to compensate for tool shortcomings and to improve communication amongst the collaboration members. One such important extension was the incorporation of CASE information into the specification document. 7 refs.

Petravick, D.; Berman, E.; Nicinski, T.; Rechenmacher, R.; Oleynik, G.; Pordes, R.; Stoughton, C.

1991-06-01

122

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

123

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

2012-04-01

124

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

125

MINISTRIO DA EDUCAO MEC MINISTRIO DA CULTURA  

E-print Network

SECRETARIA DE POLÍTICAS DE PROMO��O DA IGUALDADE RACIAL SECRETARIA DE POLÍTICAS PARA AS MULHERES SECRETARIA de Promoção da Igualdade Racial, Secretaria de Políticas para as Mulheres e Secretaria-Geral da

Floeter, Sergio Ricardo

126

Diameter determinations from VINCI using global calibration solutions  

E-print Network

work. No a priori diameters are input to the algorithm, which relies on baseline diversity and on at least 6 separate nights, with observations over a median baseline range of 4.8:1. Uniform disk diameters are a by-product of the cross-calibration procedure which uses this database to solve for an evolving

Meisner, Jeff

127

Proceedings of The ASME 2012 11th Biennial Conference On Engineering Systems& Design And Analysis  

E-print Network

´eonard de Vinci 45072 Orl´eans, France Email: tarek.merzouki@univ-orleans.fr Eric Blond PRISME, University of Orl´eans 8 rue L´eonard de Vinci 45072 Orl´eans, France Email: eric.blond@univ-orleans.fr Nicolas at the bottom level in the hot flame is close to 1200oC. About 17m higher, at the top of the chamber

128

The complete gene sequence of titin, expression of an unusual approximately 700-kDa titin isoform, and its interaction with obscurin identify a novel Z-line to I-band linking system.  

PubMed

Titin is a giant vertebrate striated muscle protein with critical importance for myofibril elasticity and structural integrity. We show here that the complete sequence of the human titin gene contains 363 exons, which together code for 38 138 residues (4200 kDa). In its central I-band region, 47 novel PEVK exons were found, which contribute to titin's extensible spring properties. Additionally, 3 unique I-band titin exons were identified (named novex-1 to -3). Novex-3 functions as an alternative titin C-terminus. The novex-3 titin isoform is approximately 700 kDa in size and spans from Z1-Z2 (titin's N-terminus) to novex-3 (C-terminal exon). Novex-3 titin specifically interacts with obscurin, a 721-kDa myofibrillar protein composed of 57 Ig/FN3 domains, followed by one IQ, SH3, DH, and a PH domain at its C-terminus. The obscurin domains Ig48/Ig49 bind to novex-3 titin and target to the Z-line region when expressed as a GFP fusion protein in live cardiac myocytes. Immunoelectron microscopy detected the C-terminal Ig48/Ig49 obscurin epitope near the Z-line edge. The distance from the Z-line varied with sarcomere length, suggesting that the novex-3 titin/obscurin complex forms an elastic Z-disc to I-band linking system. This system could link together calcium-dependent, SH3-, and GTPase-regulated signaling pathways in close proximity to the Z-disc, a structure increasingly implicated in the restructuring of sarcomeres during cardiomyopathies. PMID:11717165

Bang, M L; Centner, T; Fornoff, F; Geach, A J; Gotthardt, M; McNabb, M; Witt, C C; Labeit, D; Gregorio, C C; Granzier, H; Labeit, S

2001-11-23

129

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.

130

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. PMID:23762366

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

2013-01-01

131

INFLUÊNCIA DO DESCAROÇAMENTO NAS CARACTERÍSTICAS TECNOLÓGICAS DA FIBRA DO ALGODÃO ANALISADAS PELO HVI (HIGH VOLUME INSTRUMENTS) E PELO AFIS (ADVANCED FIBER INFORMATION SYSTEM)1  

Microsoft Academic Search

This work had the objective to evaluate the effect of three cotton ginning methods on intrinsic and extrinsic cotton fiber characteristics analized by the HVI (High Volume Instrumentes) and AFIS (Advanced Fiber Information System) equipaments. The following treatments were studied: 1) roller gin machine; 2) 50 saw-brush gin smal works prototype; 3) stand 90 saw-brush gin machine. Seed cotton samples

ODILON RENY; RIBEIRO FERREIRA DA SILVA; MARIA JOSÉ DA SILVA

132

Solution Structure of the 30 kDa N-Terminal Domain of Enzyme I of the Escherichia coli Phosphoenolpyruvate:Sugar Phosphotransferase System by  

E-print Network

known as enzymes II (EII), which effect the sugar-specific/trans- location reactions. EI itself is a 64 Phosphoenolpyruvate:Sugar Phosphotransferase System by Multidimensional NMR Daniel S. Garrett, Yeong-Jae Seok,§ Der Institutes of Health, Bethesda, Maryland 20892 ReceiVed NoVember 26, 1996; ReVised Manuscript Recei

Clore, G. Marius

133

Kate Steinitz, Librarian, Artist, Scholar; Being a Thirteen-Part Tribute to One Whose Verve Has Enlivened Some Eight Decades on Two Continents  

ERIC Educational Resources Information Center

Personal reminiscences about the Dada artist, expert on Leonardo da Vinci, and librarian at the UCLA Library of Vinciana by museum directors, scholars, and friends. Includes selected bibliography of her works, a chronology, poems, sketches, and photographs. (JS)

Wilson Libr Bull, 1970

1970-01-01

134

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

135

Electronic Journal of Statistics Vol. 7 (2013) 20052031  

E-print Network

Piazza Leonardo da Vinci, 32, 20133, Milano, Italy e-mail: piercesare.secchi@polimi.it Aymeric Stamm IRISA, University of Rennes I UMR CNRS-6074, Campus de Beaulieu, F-35042 Rennes, France e-mail: aymeric

Boyer, Edmond

136

CONTROVERSIES ON NATURE AS UNIVERSAL LEGALITY (1680-1710) (SOPHIE ROUX)  

E-print Network

in Leonardo da Vinci, Johannes Kepler and especially in Galileo Galilei, an idea of Nature as an imminent in the works of Galileo Galilei, René Descartes, Francis Bacon, Robert Boyle, Baruch Spinoza, Christiaan

Paris-Sud XI, Université de

137

Anatomy and art.  

PubMed

Leonardo da Vinci, Jean Falcon, Andreas Vesalius, Henry Gray, Henry Vandyke Carter and Frank Netter created some of the best atlases of anatomy. Their works constitute not only scientific medical projects but also masterpieces of art. PMID:24640589

Laios, Konstantinos; Tsoukalas, Gregory; Karamanou, Marianna; Androutsos, George

2013-01-01

138

The Cognitive Transfer and the Tutor's Role in a CBL Environment  

Microsoft Academic Search

In this paper we report on a longitudinal study of a Leonardo da Vinci program regard- ing the application of a Computer Based Learning environment in three EU countries, Greece, Germany, and Holland. The \\

Athanasis Karoulis; Andreas S. Pomportsis

2003-01-01

139

Under(lining) Leh : the order of consciousness  

E-print Network

"Because it is beautiful, there must be a formal order." - Leonardo Da Vinci. The thesis is an investigation into the idea that nothing built evolves naturally, that there is an explicit or implicit structure and an order ...

Bagai, Radhika

1994-01-01

140

Experimental and theoretical studies on organic D-?-A systems containing three-coordinate boron moieties as both ?-donor and ?-acceptor.  

PubMed

Four linear ?-conjugated systems with 1,3-diethyl-1,3,2-benzodiazaborolyl [C(6)H(4)(NEt)(2)B] as a ?-donor at one end and dimesitylboryl (BMes(2)) as a ?-acceptor at the other end were synthesized. These unusual push-pull systems contain phenylene (-1,4-C(6)H(4)-; 1), biphenylene (-4,4'-(1,1'-C(6)H(4))(2)-; 2), thiophene (-2,5-C(4)H(2)S-; 3), and dithiophene (-5,5'-(2,2'-C(4)H(2)S)(2)-; 4) as ?-conjugated bridges and different types of three-coordinate boron moieties serving as both ?-donor and ?-acceptor. Molecular structures of 2, 3, and 4 were determined by single-crystal X-ray diffraction. Photophysical studies on these systems reveal blue-green fluorescence in all compounds. The Stokes shifts for 1, 2, and 3 are notably large at 7820-9760 cm(-1) in THF and 5430-6210 cm(-1) in cyclohexane, whereas the Stokes shift for 4 is significantly smaller at 5510 cm(-1) in THF and 2450 cm(-1) in cyclohexane. Calculations on model systems 1'-4' show the HOMO to be mainly diazaborolyl in character and the LUMO to be dominated by the empty p orbital at the boron atom of the BMes(2) group. However, there are considerable dithiophene bridge contributions to both orbitals in 4'. From the experimental data and MO calculations, the ?-electron-donating strength of the 1,3-diethyl-1,3,2-benzodiazaborolyl group was found to lie between that of methoxy and dimethylamino groups. TD-DFT calculations on 1'-4', using B3LYP and CAM-B3LYP functionals, provide insight into the absorption and emission processes. B3LYP predicts that both the absorption and emission processes have strong charge-transfer character. CAM-B3LYP which, unlike B3LYP, contains the physics necessary to describe charge-transfer excitations, predicts only a limited amount of charge transfer upon absorption, but somewhat more upon emission. The excited-state (S(1)) geometries show the borolyl group to be significantly altered compared to the ground-state (S(0)) geometries. This borolyl group reorganization in the excited state is believed to be responsible for the large Stokes shifts in organic systems containing benzodiazaborolyl groups in these and related compounds. PMID:22213064

Weber, Lothar; Eickhoff, Daniel; Marder, Todd B; Fox, Mark A; Low, Paul J; Dwyer, Austin D; Tozer, David J; Schwedler, Stefanie; Brockhinke, Andreas; Stammler, Hans-Georg; Neumann, Beate

2012-01-27

141

The effects of the leader's personal character on political leadership: a study of Great Britain's Prime Ministers from Clement Attlee to Margaret Thatcher  

E-print Network

, there was a tremendous growth in the prevalence of psychohistories. According to several researchers, this growth has been attributed to Sigmund Freud's book entitled Leonardo da Vinci and a Memor of His Childhood written in 1910 (Sears, 1987; Runyan, 1988..., there was a tremendous growth in the prevalence of psychohistories. According to several researchers, this growth has been attributed to Sigmund Freud's book entitled Leonardo da Vinci and a Memor of His Childhood written in 1910 (Sears, 1987; Runyan, 1988...

Runyan, Richard Duane

2012-06-07

142

Exploring Leonardo  

NSDL National Science Digital Library

This is an online exhibit, created by the Boston Museum of Science, on Leonardo da Vinci, with references and activities about both is scientific and artistic work. The page features an inventor's workshop, perspectives on Leonardo da Vinci and additional resources on this topic. The resources consist of: letters to teachers, a glossary, a bibliography and image credits and permissions. This is a great resource for students or instructors looking for additional information or resources on this great mind.

2009-05-04

143

Harry Potter's World: Renaissance Science, Magic and Medicine  

Microsoft Academic Search

The Awakening of a Renaissance Spirit: Finding Harry Potter\\u000aBetsy Pudliner, Assistant Professor, Family and Consumer Sciences\\u000aThis workshop will demonstrate a correlation between Leonardo da Vinci, Joseph Campbell’s A Hero’s Journey, Harry Potter, and travel. Da Vinci and Harry Potter were on a quest to awaken their inner spirit of genius through the exploration and exposure to the world

Betsy A. Pudliner

2009-01-01

144

High-speed 3-dimensional imaging in robot-assisted thoracic surgical procedures.  

PubMed

We used a high-speed 3-dimensional (3D) image analysis system (SYNAPSE VINCENT, Fujifilm Corp, Tokyo, Japan) to determine the best positioning of robotic arms and instruments preoperatively. The da Vinci S (Intuitive Surgical Inc, Sunnyvale, CA) was easily set up accurately and rapidly for this operation. Preoperative simulation and intraoperative navigation using the SYNAPSE VINCENT for robot-assisted thoracic operations enabled efficient planning of the operation settings. The SYNAPSE VINCENT can detect the tumor location and depict surrounding tissues quickly, accurately, and safely. This system is also excellent for navigational and educational use. PMID:24882302

Kajiwara, Naohiro; Akata, Soichi; Hagiwara, Masaru; Yoshida, Koichi; Kato, Yasufumi; Kakihana, Masatoshi; Ohira, Tatsuo; Kawate, Norihiko; Ikeda, Norihiko

2014-06-01

145

systems  

Microsoft Academic Search

Empirical observations often indicate that complexity enhances stability, while most theoretical studies, such as May's (1972) classic paper, point to the opposite. Despite the wide generality of these latter theoretical analyses, our examination of the well-known competitive Lotka-Volterra system reveals that increasing complexity (measured in terms of connectance) can enhance species coexistence and persistence in model communities (measured in terms

Ian D. Rozdilsky; Lewi Stone

146

Abstract--Implementation of Distribution Automation (DA) and Demand Side Management (DSM) intended to serve both  

E-print Network

Abstract--Implementation of Distribution Automation (DA) and Demand Side Management (DSM) intended, requires a wide-area two-way communication system. DA and DSM devices (customer meters, switches, etc for both DA/DSM applications can be met. And a scheduling policy is proposed to provide the applications

Paris-Sud XI, Université de

147

Completely Intracorporeal Robotic-Assisted Laparoscopic Ileovesicostomy  

PubMed Central

We present a report of a completely intracorporeal robotic-assisted laparoscopic ileovesicostomy with long term follow-up. The patient was a 55-year-old man with paraplegia secondary to tropical spastic paresis resulting neurogenic bladder dysfunction. The procedure was performed using a da Vinci Surgical system (Intuitive Surgical, Sunnyvale, CA) and took 330 minutes with an estimated blood loss of 100?mL. The patient recovered without perioperative complications. He continues to have low pressure drainage without urethral incontinence over two years postoperatively. PMID:24600527

Dolat, MaryEllen T.; Wade, Greg; Grob, B. Mayer; Hampton, Lance J.; Klausner, Adam P.

2014-01-01

148

Can Robotic Thyroidectomy Be Performed Safely in Thyroid Carcinoma Patients?  

PubMed Central

Since the adoption of the Da Vinci robotic system for remote access thyroid surgery, robotic thyroidectomy (RT) has become a popular surgical option for patients who want to avoid neck scars. Surgeons in South Korea pioneered this surgical technique and have reported successful outcomes. Although many studies have reported that RT is a feasible and safe therapeutic alternative, concerns over the surgical and oncological safety of RT remain. This article reviews the advantages and disadvantages of RT and compares the surgical safety and oncological completeness of RT with conventional open thyroidectomy.

Chai, Young Jun; Youn, Yeo-Kyu

2014-01-01

149

Robotic rectosigmoidectomy - pioneer case report in Brazil. Current scene in colorectal robotic surgery.  

PubMed

Laparoscopic colorectal surgery is believed to be technically and oncologically feasible. Robotic surgery is an attractive mode in performing minimally-invasive surgery once it has several advantages if compared to standard laparoscopic surgery. The aim of this paper is to report the first known case of colorectal resection surgery using the robotic assisted surgical device in Brazil. A 35-year-old woman with deep infiltrating endometriosis with rectal involvement was referred for colorectal resection using da Vinci surgical system. The authors also reviewed the most current series and discussed not only the safety and feasibility but also the real benefits of robotic colorectal surgery. PMID:20520984

Averbach, Marcelo; Popoutchi, Pedro; Marques Jr, Oswaldo Wiliam; Abdalla, Ricardo Z; Podgaec, Sérgio; Abrão, Maurício Simões

2010-01-01

150

Robot-Assisted Regional Anesthesia: A Simulated Demonstration  

PubMed Central

Recent advances in robotically assisted telesurgery offer expert surgical care for the geographically remote patient. Similar advances in teleanesthesia will be necessary to bring comparable perioperative care to the geographically remote patient. Although many preliminary investigations into teleanesthesia are underway, none involve remote performance of anesthesia-related procedures. Herein, we describe the placement of ultrasound-guided nerve blocks into an ultrasound phantom using the da Vinci multipurpose surgical robotic system (Intuitive Surgical, Sunnyvale, CA). Both single-injection and perineural catheter techniques were successfully performed by an operator who was not physically present at the bedside. PMID:20581161

Tighe, Patrick J.; Badiyan, S. J.; Luria, I.; Boezaart, Andre P.; Parekattil, S.

2014-01-01

151

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. PMID:16121869

Artuso, Dominick; Grossi, Robert

2005-01-01

152

Solutions for the Exercises  

Microsoft Academic Search

\\u000a For all the exercises in the book we provide solutions. These solutions are intended to help those who actively work on the\\u000a exercises to check the correctness of their solutions. In the spirit of Leonardo da Vinci’s saying “Studying without passion\\u000a damages the brain!”, we want to encourage the reader to really work on the exercises before peeking into the

Wolfgang Ertel

153

Tratamento cirúrgico da coarctação da aorta: experiência de três décadas  

Microsoft Academic Search

Resumo Objetivo: Revisar os resultados imediatos de 30 anos da cirurgia de coarctação da aorta (CoAo), no período entre 1974 e 2004. Foram incluídos todos pacientes operados de CoAo, isolada ou associada a outros defeitos congênitos. Método: Foram pesquisados os seguintes dados: idade no momento da cirurgia, sexo, lesões associadas, tipo de técnica cirúrgica utilizada, resultado cirúrgico imediato, com ênfase

Alline de Souza Alves Oliveira; Breno Barbosa de Siqueira Carneiro; Ricardo de Carvalho Lima; Catarina Cavalcanti; Roberta Villachan; Nadja Arraes; Ricardo de Albuquerque Lins; Mozart Escobar

2007-01-01

154

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

155

System  

NASA Astrophysics Data System (ADS)

Molecular dynamics simulations were carried out to investigate the anionic structures of the molten CaO-SiO2-P2O5 system. The results show that the average first nearest-neighbor distances for Si-O and P-O pairs are 1.61 and 1.53 Å, respectively. As expected, above 98 pct P and 95 pct Si show fourfold coordination and form tetrahedral structures. Due to the high basicity, nonbridging oxygen occupies a predominant position in Si and P tetrahedron. Based on the oxygen number of different types, the structures of both Si and P tetrahedron were classified as Q 0, Q 1, Q 2, Q 3, and Q 4, where the superscript referred to the number of bridging oxygen atoms. With the substitution of P2O5 for SiO2, Q 0 decreased and other type of Q i units increased. For Si tetrahedron, Q 2 and Q 3 show most notable change, for P tetrahedron, Q 1and Q 2 show the most notable change. The change of Q i units for Si tetrahedron is larger than that for P tetrahedron. The concentration of free oxygen decreases remarkably with the increase of P2O5 content. The Si-O-P linkage is energetically more favorable than Si-O-Si and P-O-P linkages. P ion has a tendency to promote the polymerization of phosphosilicate melts.

Diao, Jiang; Fan, Guozheng; Liu, Xuan; Xie, Bing

2014-10-01

156

Aves Aquáticas da Lagoa da Pampulha: Seleção de hábitats e atividade diurna  

Microsoft Academic Search

Wading birds at Lagoa da Pampulha: Habitat selection and diurnal activity. The wading bird communities in lacunar systems are mainly structured based on the availability and distribution of feeding resources and appropriate conditions for their reproduction and establishment. As a result, in a given habitat, each species selects, according to the possibilities of its behavioral repertoire, the best way to

Flávio E. Pimenta; João C. P. Drummond; Ana C. Lima

157

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

2008-03-01

158

Migration of ATLAS PanDA to CERN  

NASA Astrophysics Data System (ADS)

The ATLAS Production and Distributed Analysis System (PanDA) is a key component of the ATLAS distributed computing infrastructure. All ATLAS production jobs, and a substantial amount of user and group analysis jobs, pass through the PanDA system, which manages their execution on the grid. PanDA also plays a key role in production task definition and the data set replication request system. PanDA has recently been migrated from Brookhaven National Laboratory (BNL) to the European Organization for Nuclear Research (CERN), a process we describe here. We discuss how the new infrastructure for PanDA, which relies heavily on services provided by CERN IT, was introduced in order to make the service as reliable as possible and to allow it to be scaled to ATLAS's increasing need for distributed computing. The migration involved changing the backend database for PanDA from MySQL to Oracle, which impacted upon the database schemas. The process by which the client code was optimised for the new database backend is discussed. We describe the procedure by which the new database infrastructure was tested and commissioned for production use. Operations during the migration had to be planned carefully to minimise disruption to ongoing ATLAS offline computing. All parts of the migration were fully tested before commissioning the new infrastructure and the gradual migration of computing resources to the new system allowed any problems of scaling to be addressed.

Stewart, Graeme Andrew; Klimentov, Alexei; Koblitz, Birger; Lamanna, Massimo; Maeno, Tadashi; Nevski, Pavel; Nowak, Marcin; Emanuel De Castro Faria Salgado, Pedro; Wenaus, Torre

2010-04-01

159

The Complete Gene Sequence of Titin, Expression of an Unusual 700-kDa Titin Isoform, and Its Interaction With Obscurin Identify a Novel Z-Line to I-Band Linking System  

Microsoft Academic Search

Titin is a giant vertebrate striated muscle protein with critical importance for myofibril elasticity and structural integrity. We show here that the complete sequence of the human titin gene contains 363 exons, which together code for 38 138 residues (4200 kDa). In its central I-band region, 47 novel PEVK exons were found, which contribute to titin's extensible spring properties. Additionally,

Marie-Louise Bang; Thomas Centner; Friderike Fornoff; Adam J. Geach; Michael Gotthardt; Mark McNabb; Christian C. Witt; Dietmar Labeit; Carol C. Gregorio; Henk Granzier; Siegfried Labeit

2001-01-01

160

Hemispheric differences in the mesostriatal dopaminergic system  

PubMed Central

The mesostriatal dopaminergic system, which comprises the mesolimbic and the nigrostriatal pathways, plays a major role in neural processing underlying motor and limbic functions. Multiple reports suggest that these processes are influenced by hemispheric differences in striatal dopamine (DA) levels, DA turnover and its receptor activity. Here, we review studies which measured the concentration of DA and its metabolites to examine the relationship between DA imbalance and animal behavior under different conditions. Specifically, we assess evidence in support of endogenous, inter-hemispheric DA imbalance; determine whether the known anatomy provides a suitable substrate for this imbalance; examine the relationship between DA imbalance and animal behavior; and characterize the symmetry of the observed inter-hemispheric laterality in the nigrostriatal and the mesolimbic DA systems. We conclude that many studies provide supporting evidence for the occurrence of experience-dependent endogenous DA imbalance which is controlled by a dedicated regulatory/compensatory mechanism. Additionally, it seems that the link between DA imbalance and animal behavior is better characterized in the nigrostriatal than in the mesolimbic system. Nonetheless, a variety of brain and behavioral manipulations demonstrate that the nigrostriatal system displays symmetrical laterality whereas the mesolimbic system displays asymmetrical laterality which supports hemispheric specialization in rodents. The reciprocity of the relationship between DA imbalance and animal behavior (i.e., the capacity of animal training to alter DA imbalance for prolonged time periods) remains controversial, however, if confirmed, it may provide a valuable non-invasive therapeutic means for treating abnormal DA imbalance. PMID:24966817

Molochnikov, Ilana; Cohen, Dana

2014-01-01

161

Preliminary experience of the robot-assisted laparoscopic excision of a retroperitoneal mass: A case report  

PubMed Central

The aim of the present study was to report the initial clinical experience of adopting the da Vinci Surgical System (Intuitive Surgical, Inc., Sunnyvale, CA, USA) to perform a retroperitoneal tumor resection. The patient was a 56-year-old female who presented with a five-year history of hypertension. Abdominal dynamic computed tomography (CT) and positron emission tomography-CT scans revealed a mass measuring ~6 cm in diameter that was located anterior to the abdominal aorta, and between the abdominal aorta and the inferior vena cava (at the level of the third lumbar vertebra). The tumor was excised via a five-port, robot-assisted, transperitoneal laparoscopic approach. Careful dissection of the tumor away from the abdominal aorta and the inferior vena cava was accomplished without resulting in major vascular injury. There were no complications and the patient was discharged in a good condition on the eleventh postoperative day. Pathological analysis of a tumor specimen demonstrated a benign pheochromocytoma (PHEO). During the three-month follow-up, no recurrence was identified through CT scans or measurement of the patient’s endocrine hormone levels. Thus, the da Vinci robot-assisted laparoscopic system may be safely employed in the treatment of extra-adrenal PHEOs that occur in difficult locations for which a laparoscopic surgical excision may be challenging. PMID:25360164

LIU, QIN; WANG, XINJING; SHEN, BAIYONG; ZHAO, LIANGCHAO; ZHAN, QIAN; ZHAO, SHULIN; WEN, CHENLEI; DENG, XIAXING; PENG, CHENGHONG; LI, HONGWEI

2014-01-01

162

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

163

Robotic renal transplantation: first European case.  

PubMed

A kidney from a 56-year-old mother was transplanted to her 37-year-old daughter laparoscopically using the daVinci HDSi surgical system. The kidney was introduced into the abdomen through a 7-cm suprapubic incision used also for the uretero-vescical anastomosis. Vascular anastomoses were carried out through a total of three additional ports. Surgery lasted 154 min, including 51 min of warm ischemia of the graft. Urine production started immediately after graft reperfusion. Renal function remains optimal at the longest follow-up of 3 months. The technique employed in this case is discussed in comparison with the only other two contemporary experiences, both from the USA. Furthermore, possible advantages and disadvantages of robotics in kidney transplantation are discussed extensively. We conclude that the daVinci surgical system allows the performance of kidney transplantation under optimal operative conditions. Further experience is needed, but it is likely that solid organ transplantation will not remain immune to robotics. PMID:21091963

Boggi, Ugo; Vistoli, Fabio; Signori, Stefano; D'Imporzano, Simone; Amorese, Gabriella; Consani, Giovanni; Guarracino, Fabio; Melfi, Franca; Mussi, Alfredo; Mosca, Franco

2011-02-01

164

Transoral robotic-assisted skull base surgery to approach the sella turcica: cadaveric study.  

PubMed

Transoral robotic surgery (TORS) offers new possibilities that have not been experimented in the field of minimally invasive skull base neurosurgery. We propose to evaluate the feasibility of transoral approach to the sella turcica with the da Vinci system on cadavers. We performed four robot-assisted dissections on human fresh cadavers in order to reach the pituitary fossa by the oral cavity. Cavum mucosa dissection was performed by the head and neck surgeon at the console and then the sphenoid was drilled by the neurosurgeon at the bedside, with intraoperative fluoroscopy and a "double surgeon" control. Mucosa closure was attempted with robotic arms. We succeeded in performing a sellar opening in all cadavers with a minimally invasive approach, as the hard palate was never drilled. The video endoscope offered a large view inside the sphenoidal sinus, as observed in transnasal endoscopy, but with 3D visualization. The camera arm could be inserted into the sphenoidal sinus, and instrument arms in the pituitary fossa. Operative time to reach the pituitary fossa was approximately 60 min in all procedures: 20 min of initial setup, 10 min of mucosal dissection, and 30 min of sphenoid surgery. New anatomical landmarks were defined. Advantages and pitfalls of such an unpublished technique were discussed. This is the first cadaveric study reported da Vinci robotic transoral approach to the sella turcica with a minimally invasive procedure. This innovative technique may modify the usual pituitary adenoma removal as the sella is approached infero-superiorly. PMID:24848406

Chauvet, Dorian; Missistrano, Antoine; Hivelin, Mikaël; Carpentier, Alexandre; Cornu, Philippe; Hans, Stéphane

2014-10-01

165

Bubble tracking in image sequences Da-chuan Cheng and Hans Burkhardt  

E-print Network

Bubble tracking in image sequences Da-chuan Cheng and Hans Burkhardt Institute of Pattern-(0)761-2038272 Fax: +49-(0)761-2038262 #12;1 Bubble tracking in image sequences Da-chuan Cheng and Hans Burkhardt of Freiburg,79110, Germany Abstract In this paper, we develop a system which can track bubbles in image

166

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...

167

Is the geological past a key to the (near) future  

SciTech Connect

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 the climatic event chronicled in Genesis could explain the evidence. How, he wondered, could these largely sedentary mollusks have traveled so far in merely 40 days He concluded that the received wisdom was wrong: The marine organisms had lived and died in a vanished sea, just where he found them. But, perhaps fearing papal displeasure, he never published his conclusions.

Culotta, E.

1993-02-12

168

The DaCHS Multi-protocol VO Server  

NASA Astrophysics Data System (ADS)

GAVO's Data Center Helper Suite (DaCHS) is a suite of tools for publishing data to the Virtual Observatory. It implements all major VO protocols (SCS, SIAP, SSAP, TAP, OAI-PMH). The integrated management and ingestion component allow defining metadata, structure, and services once and re-use the definition throughout the publication cycle from initial metadata aquisition to registry record generation. It has been driving GAVO's data center since 2008 and is now deployed in multiple locations around the globe. This poster briefly describes the design of the system as well as a bird's-eye view of data publishing with DaCHS.

Demleitner, M.

2014-05-01

169

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

170

PAN-DA and beyond: Data acquisition for the next generation experiments  

SciTech Connect

We report on the status of the PAN-DA data acquisition system presented at the last Real Time Conference. Since that time, PAN-DA has been successfully used in the fixed target program at Fermilab. We also report on the plans and strategies for development of a new data acquisition system for the next generation of fixed target experiments at Fermilab. 10 refs., 3 figs.

Pordes, R.; Anderson, J.; Berg, D.; Berman, E.; Brown, D.; Dorries, T.; Mackinnon, B.; Meadows, J.; Moore, C.; Nicinski, T.; Oleynik, G.; Petravick, D.; Rechenmacher, R.; Sergey, G.; Slimmer, D.; Streets, J.; Vittone, M.; Votava, M.; Wilcer, N.; White, V.

1991-06-01

171

CABS: Command Automated Budget System.  

National Technical Information Service (NTIS)

CABS was originally designed as the vehicle for processing mechanized budget submissions, through channels, to Department of the Army. Although DA has not required a mechanized submission since 1975, the system is effectively utilized at major commands to...

O. L. Cook

1981-01-01

172

Neutron back scattering for the search of the Battle of Anghiari.  

PubMed

The 'Battle of Anghiari' is a wall painting made by Leonardo Da Vinci around 1505. Its present day location is unknown but some indications suggest that the mural might be concealed behind a brick wall. Test measurements are presented demonstrating that neutron back scattering (NBS) can be used to search through the wall for the painting. NBS is a non-destructive technique to establish the presence of the hydrogen contained in the painting materials that were probably used by Da Vinci. PMID:19733089

Bom, V R; Cosentino, A; Seracini, M; Rosa, R

2010-01-01

173

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. PMID:21483723

Yamamoto, Kei; Vernier, Philippe

2011-01-01

174

da Superintendncia de Comunicao Social da Universidade Federal Fluminense  

E-print Network

Rosa- ne Pires Fernandes, amiga-irmã, que deu asas à minha pequena ideia transfor- mando-a na;5 ÍNDICE Apresentação O revisor, o copidesque e o redator Como escrever para o site da UFF - Normas de

Liu, I-Shih

175

DA/DSM directions. [Distribution automation/Demand Side Management  

SciTech Connect

This article is an overview of distribution automation and demand-side management with implications of future trends. Distribution automation (DA) and demand-side management (DSM) have been the subject of discussion, evaluation, experimentation, and limited implementation for the last 10 to 15 years. It now appears the industry is ready to proceed with full-scale implementation. The communication systems seem to be available and affordable, a number of suppliers are offering products specifically designed for the application, and the systems that have been put in place have demonstrated benefits. In addition, the results to data seem to imply a new direction for final implementation, which, for the first time, would offer the possibility of bringing together the complete picture of system operation. The authors examines how DA/DSM have been applied to two areas in the distribution network: at the end-user point and along the distribution feeder.

Smith, H.L.

1994-10-01

176

Diálogo intercultural na educação ambiental : uma pedagogia da palavra.  

E-print Network

??Dissertação (mestrado)—Universidade de Brasília, Centro de Desenvolvimento Sustentável, 2012. O presente trabalho é fruto da investigação da dimensão educativa da narração de histórias tradicionais das… (more)

Dounis, Sumaya Cristina

2012-01-01

177

[Haptic tracking control for minimally invasive robotic surgery].  

PubMed

Haptic feedback plays a significant role in minimally invasive robotic surgery (MIRS). A major deficiency of the current MIRS is the lack of haptic perception for the surgeon, including the commercially available robot da Vinci surgical system. In this paper, a dynamics model of a haptic robot is established based on Newton-Euler method. Because it took some period of time in exact dynamics solution, we used a digital PID arithmetic dependent on robot dynamics to ensure real-time bilateral control, and it could improve tracking precision and real-time control efficiency. To prove the proposed method, an experimental system in which two Novint Falcon haptic devices acting as master-slave system has been developed. Simulations and experiments showed proposed methods could give instrument force feedbacks to operator, and bilateral control strategy is an effective method to master-slave MIRS. The proposed methods could be used to tele-robotic system. PMID:22826928

Xu, Zhaohong; Song, Chengli; Wu, Wenwu

2012-06-01

178

EFEITOS DE SISTEMAS DE PREPARO DO SOLO NA EROSÃO E NA PRODUTIVIDADE DA ACÁCIA-NEGRA (Acacia mearnsii De Wild.) EFFECTS OF SOIL TILLAGE SYSTEMS ON SOIL EROSION AND ON BLACK WATTLE (Acacia mearnsii De Wild.) PRODUCTIVITY  

Microsoft Academic Search

Black wattle plantations are not always settled in soils adequate for the species sometimes due to land value or due to industry distance. Different soil tillage systems can improve soil conditions to plant growth, avoid erosion problems and reduce costs. In areas belonging to TANAGRO S.A. e SETA S.A., in two different counties, Piratini and Butiá, RS, and two distinct

Renato A. Dedecek; Gustavo R. Curcio; Marcos F. G. Rachwal; Augusto A. Simon

2007-01-01

179

O Desenvolvimento da Orientação Profissional no Brasil  

Microsoft Academic Search

RESUMO O objetivo deste artigo é descrever o desenvolvimento da Orientação Profissional brasileira, desde suas origens até a atualidade. Inicialmente, é feita uma breve recapitulação histórica do desenvolvimento da Orientação Profissional no ambiente internacional. Em seguida, são descritos os fatos históricos de mai- or relevância para o nascimento e o desenvolvimento da Orientação Profissional em nosso país, as rela- ções

Mônica Sparta

180

Two-step Design of Pre-filter and Post-filter for AD/DA Converter  

NASA Astrophysics Data System (ADS)

In the field of signal processing, AD/DA converter takes an important role for data compressing and circuits design. This paper proposes new design method of AD/DA system with pre-filter and post-filters for achieving small quantization noise effect. Both filters are designed to minimize noise and distortion toward original signal. The effectiveness is illustrated by numerical example.

Okajima, Hiroshi; Matsunaga, Nobutomo

181

Toxoplasma gondii 70 kDa Heat Shock Protein: Systemic Detection Is Associated with the Death of the Parasites by the Immune Response and Its Increased Expression in the Brain Is Associated with Parasite Replication  

PubMed Central

The heat shock protein of Toxoplasma gondii (TgHSP70) is a parasite virulence factor that is expressed during T. gondii stage conversion. To verify the effect of dexamethasone (DXM)-induced infection reactivation in the TgHSP70-specific humoral immune response and the presence of the protein in the mouse brain, we produced recombinant TgHSP70 and anti-TgHSP70 IgY antibodies to detect the protein, the specific antibody and levels of immune complexes (ICs) systemically, as well as the protein in the brain of resistant (BALB/c) and susceptible (C57BL/6) mice. It was observed higher TgHSP70-specific antibody titers in serum samples of BALB/c compared with C57BL/6 mice. However, the susceptible mice presented the highest levels of TgHSP70 systemically and no detection of specific ICs. The DXM treatment induced increased parasitism and lower inflammatory changes in the brain of C57BL/6, but did not interfere with the cerebral parasitism in BALB/c mice. Additionally, DXM treatment decreased the serological TgHSP70 concentration in both mouse lineages. C57BL/6 mice presented high expression of TgHSP70 in the brain with the progression of infection and under DXM treatment. Taken together, these data indicate that the TgHSP70 release into the bloodstream depends on the death of the parasites mediated by the host immune response, whereas the increased TgHSP70 expression in the brain depends on the multiplication rate of the parasite. PMID:24801069

Barenco, Paulo Victor Czarnewski; Lourenco, Elaine Vicente; Cunha-Junior, Jair Pereira; Almeida, Karine Cristine; Roque-Barreira, Maria Cristina; Silva, Deise Aparecida Oliveira; Araujo, Ester Cristina Borges; Coutinho, Loyane Bertagnolli; Oliveira, Mario Cezar; Mineo, Tiago Wilson Patriarca; Mineo, Jose Roberto; Silva, Neide Maria

2014-01-01

182

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

2011-05-01

183

Patient positioning and port placement for robot-assisted surgery.  

PubMed

Abstract The introduction of robotic surgical systems and their integration into minimally invasive procedures have changed the landscape of laparoscopic surgery dramatically. Intuitive Surgical's da Vinci Surgical System was first approved by the Food and Drug Administration for cardiothoracic procedures in the late 1990s. This trend quickly spread through other surgical specialties, with urologists as one of the frontrunners in adoption. Subsequently, pediatric urologists have adopted robot-assisted procedures in selected centers, performing procedures such as pyeloplasty for ureteropelvic junction obstruction, partial and complete nephrectomy, and both intravesical and extravesical ureteral reimplantation. In this article, we will discuss technical considerations related to patient positioning and port placement in pediatric robot-assisted surgery. PMID:24548088

Chang, Charles; Steinberg, Zoe; Shah, Anup; Gundeti, Mohan S

2014-06-01

184

76 FR 12627 - Airworthiness Directives; Diamond Aircraft Industries GmbH Models DA 42, DA 42 NG, and DA 42 M-NG...  

Federal Register 2010, 2011, 2012, 2013

...Identifier 2011-CE-002-AD] RIN 2120-AA64 Airworthiness Directives; Diamond Aircraft Industries GmbH Models DA 42, DA 42 NG, and DA 42 M-NG Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT)....

2011-03-08

185

Lembranías da Companhia dramática Nacional  

E-print Network

, pois que a primeira, na gestão de Abadie Faria Rosa, sob o título de "Comédia Brasileira," aconteceu em 1940 mas logo foi transformada em sociedade civil, por entraves burocráticos. Claro que eu tinha um grande conhecimento do assunto. Fui durante 2....D.N. levar-se-á em conta não só o alto nível literário das peças, mas também o seu valor teatral. VII. Fica o Diretor do Serviço Nacional de Teatro autorizado a designar ou admitir, no período de duração das temporadas, nos termos da legislação e normas...

Calvet, Aldo

1984-04-01

186

Captopril inhibits the 72 kDa and 92 kDa matrix metalloproteinases  

Microsoft Academic Search

Captopril inhibits the 72 kDa and 92 kDa matrix metalloproteinases. Gelatinases are metalloproteinases in the kidney which can cleave type IV collagen as well as gelatin. We partially purified the 72 kDa and 92 kDa gelatinases. The gelatinolytic activity was measured by zymography and a quantitative biotin-avidin assay. By zymography, captopril in concentrations of 20 mM and 40 mM added

Darius Sorbi; Magued Fadly; Robert Hicks; Sterling Alexander; Leonard Arbeit

1993-01-01

187

Nucleus-Localized 21.5-kDa Myelin Basic Protein Promotes Oligodendrocyte Proliferation and Enhances Neurite Outgrowth in Coculture, Unlike The Plasma Membrane-Associated 18.5-kDa Isoform  

PubMed Central

The classic myelin basic protein (MBP) family of central nervous system (CNS) myelin arises from transcription start site 3 of the Golli (gene of oligodendrocyte lineage) complex and comprises splice isoforms ranging in nominal molecular mass from 14 kDa to (full-length) 21.5 kDa. We have determined here a number of distinct functional differences between the major 18.5-kDa and minor 21.5-kDa isoforms of classic MBP with respect to oligodendrocyte (OLG) proliferation. We have found that, in contrast to 18.5-kDa MBP, 21.5-kDa MBP increases proliferation of early developmental immortalized N19-OLGs by elevating the levels of phosphorylated ERK1/2 and Akt1 kinases and of ribosomal protein S6. Coculture of N2a neuronal cells with N19-OLGs transfected with the 21.5-kDa isoform (or conditioned medium from), but not the 18.5-kDa isoform, caused the N2a cells to have increased neurite outgrowth and process branching complexity. These roles were dependent on subcellular localization of 21.5-kDa MBP to the nucleus and on the exon II-encoded segment, suggesting that the nuclear localization of early minor isoforms of MBP may play a crucial role in regulating and/or initiating myelin and neuronal development in the mammalian CNS. PMID:23184356

Smith, Graham S.T.; Samborska, Bozena; Hawley, Steven P.; Klaiman, Jordan M.; Gillis, Todd E.; Jones, Nina; Boggs, Joan M.; Harauz, George

2013-01-01

188

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 formulæ, 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

189

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

190

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

191

Mathematical Fiction for Senior Students and Undergraduates: Novels, Plays, and Film  

ERIC Educational Resources Information Center

Mathematical fiction has probably existed since ideas have been written down and certainly as early as 414 BC (Kasman, 2000). Mathematical fiction is a recently rediscovered and growing literature, as sales of the novels: "The Curious Incident of the Dog in the Night-time" (Haddon, 2003) and "The Da Vinci Code" (Brown, 2004) attest. Science…

Padula, Janice

2006-01-01

192

Art, Anatomy, and Medicine: Is There a Place for Art in Medical Education?  

ERIC Educational Resources Information Center

For many years art, anatomy and medicine have shared a close relationship, as demonstrated by Leonardo da Vinci's anatomical drawings and Andreas Vesalius' groundbreaking illustrated anatomical textbook from the 16th century. However, in the modern day, can art truly play an important role in medical education? Studies have suggested…

Bell, Lawrence T. O.; Evans, Darrell J. R.

2014-01-01

193

A YEAR IN THE LIFE BINGHAMTON UNIVERSITY SCHOLAR  

E-print Network

Thinking Like Leonardo DaVinci, host Martie Nortje from the University of the Free State in South Africa for a discussion about her experiences living and working in South Africa. #12;October 2013: Scholars Bridget in the FAA Design Competition for Universities 2013 ­ Airport Environmental Challenge Federal Aviation

Suzuki, Masatsugu

194

Rise characteristics of gas bubbles in a 2D rectangular column: VOF simulations vs experiments  

Microsoft Academic Search

About five centuries ago, Leonardo da Vinci described the sinuous motion of gas bubbles rising in water. We have attempted to simulate the rise trajectories of bubbles of 4, 5, 7, 8, 9, 12 and 20 mm in diameter rising in a 2D rectangular column filled with water. The simulations were carried out using the volume-of-fluid (VOF) technique developed by

R. Krishna; J. M. van Baten

1999-01-01

195

Speculation and Historical Interpretation for Fifth and Sixth Graders.  

ERIC Educational Resources Information Center

Describes a unit for fifth- and sixth-grade students that helps develop critical thinking skills. Explains that students read the book, "Leonardo da Vinci" (Diane Stanley), to develop their historical interpretation skills and demonstrate that there is not just one right answer in history. (CMK)

Schneider, Elizabeth; Gregory, Leslie A.

2000-01-01

196

Comparison of Expert-Based and Empirical Evaluation Methodologies in the Case of a CBL Environment: The ''Orestis'' Experience  

ERIC Educational Resources Information Center

This paper compares several interface evaluation methods applied in the case of a computer based learning (CBL) environment, during a longitudinal study performed in three European countries, Greece, Germany, and Holland, and within the framework of an EC funded Leonardo da Vinci program. The paper firstly considers the particularities of the CBL…

Karoulis, Athanasis; Demetriadis, Stavros; Pombortsis, Andreas

2006-01-01

197

Structural Information Retention in Visual Art Processing.  

ERIC Educational Resources Information Center

The accuracy of non-art college students' longterm retention of structural information presented in Leonardo da Vinci's "Mona Lisa" was tested. Seventeen female undergraduates viewed reproductions of the painting and copies that closely resembled structural attributes of the original. Only 3 of the 17 subjects reported having viewed a reproduction…

Koroscik, Judith Smith

198

The Dangers of Art "Appreciation."  

ERIC Educational Resources Information Center

Addresses the issue of the fame of Leonardo da Vinci's "Mona Lisa." Describes several kitsch objects that have been created about the painting. Maintains that students need to address this issue otherwise such exploitation will depreciate the value of the art work. (KM)

Irvine, Hope

1991-01-01

199

The Future Development of the European Union Education, Training and Youth Programmes After 2006: A Public Consultation Document.  

ERIC Educational Resources Information Center

This document launches a wide public consultation with all those involved in and with an interest in the European Union's (EU's) education, training, and youth programs called Socrates, Tempus, Leonardo da Vinci, and Youth for Europe. It is the first step toward preparing the new generation of programs to start in 2007 and will inform the…

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

200

Postmodern Irony as Subversive Rhetorical Strategy.  

ERIC Educational Resources Information Center

Contributes to scholarship advancing the understanding of human communication by analyzing Susan Dorothea White's painting, "The First Supper," as a subversive postmodern ironic reading of Leonardo Da Vinci's "The Last Supper." Suggests that subversive irony assumes distinctive and complex technical and theoretical characteristics, thereby…

Shugart, Helene A.

1999-01-01

201

The Renaissance Culture and the Arts. Grades 3-6, The Time Traveler Series.  

ERIC Educational Resources Information Center

This resource guide encourages grade 3-6 students to explore the social structure, government, culture and art forms, scientific discoveries, and historic personalities of the European Renaissance. The work is organized into 10 topics: (1) The Renaissance; (2) Art; (3) Leonardo da Vinci; (4) The Medicis; (5) Michelangelo; (6) Printing; (7) Music;…

Pofahl, Jane

202

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

203

Artsmarts.  

ERIC Educational Resources Information Center

Provides information on Leonardo da Vinci, Michelangelo, and Honore Daumier's "Rue Transonian." Describes an art activity in which students in an advanced drawing class reproduce a famous drawing in the same medium as the original, make the composition contemporary, and include themselves in the composition. (CMK)

Greenman, Geri

2000-01-01

204

Kids as Curators: Virtual Art at the Seattle Museum.  

ERIC Educational Resources Information Center

Discusses the use of technology at the Seattle Art Museum (Washington). Includes a Web site that enables students in grades six through ten to act as curators and offers integrations of technology in the exhibition "Leonardo Lives: The Codex Leicester and Leonardo da Vinci's Legacy of Art and Science." (CMK)

Scanlan, Laura Wolff

2000-01-01

205

Explorers with a Mission.  

ERIC Educational Resources Information Center

Offers brief summaries of contributions made by several of Christopher Columbus's contemporaries, including Nicholas Cusa, Leonardo da Vinci, Michelangelo Buonarroti, Nicholas Copernicus, Johannes Gutenberg, Sir Thomas More, Desiderius Erasmus, and John Colet. Urges modern Catholic educators to learn from these risk takers and visionaries. (DMM)

Sweeney, Patricia James

1991-01-01

206

Leonardo's Tree Theory  

NSDL National Science Digital Library

This activity focuses on Leonardo da Vinci's tree theory, which states that the cross-sectional area of a major limb is approximately equal to the cross-sectional areas of its two offshoot limbs. Students test this theory by collecting data from 10 trees and perform the mathematical calculations. In addition to data collection skills, this exercise strengthens problem solving skills.

Werner, Suzanne K.

2003-03-01

207

Kinderet: Developing Training for Early Childhood Educators in Information and Communications Technology (ICT) In Bulgaria, England, Portugal, Spain and Sweden  

ERIC Educational Resources Information Center

In the European context the continuing training of early childhood educators in terms of information and communications technology (ICT) remains limited and is in need of development. The KINDERET project has been funded through the European Commission's "Leonardo da Vinci" programme aimed to identify and understand the theoretical and practical…

Saude, S.; Carioca, V.; Siraj-Blatchford, J.; Sheridan, S.; Genov, K.; Nuez, R.

2005-01-01

208

Teaching Science: A Picture Perfect Process.  

ERIC Educational Resources Information Center

Explains how teachers can use graphs and graphing concepts when teaching art, language arts, history, social studies, and science. Students can graph the lifespans of the Ninja Turtles' Renaissance namesakes (Donatello, Michelangelo, Raphael, and Leonardo da Vinci) or world population growth. (MDM)

Leyden, Michael B.

1994-01-01

209

Humanities in the High School Classroom.  

ERIC Educational Resources Information Center

A humanities course that teaches an appreciation of tradition and culture through the visual arts includes consideration of contemporary art as well as classic paintings and sculpture. Study of Leonardo DaVinci's "Last Supper" provides an exercise in the intellectual approach to religious painting, while the portrait of Mona Lisa by the same…

Stawski, Conrad

210

Specific Reading Disability in Historically Famous Persons.  

ERIC Educational Resources Information Center

The possibility that four famous men--Thomas Alva Edison, Woodrow Wilson, Hans Christian Andersen, and Leonardo da Vinci--might have been reading disabled is considered by examining information concerning: (1) biographical records, (2) cognitive characteristics, (3) neuropsychological characteristics, and (4) biological characteristics. (Author/DB)

Aaron, P. G.; And Others

1988-01-01

211

Perception, Cognition, and Visualization.  

ERIC Educational Resources Information Center

Described are how pictures can combine aspects of naturalistic representation with more formal shapes to enhance cognitive understanding. These "diagrammatic" shapes derive from geometrical elementary and thereby bestow visual concreteness to concepts conveyed by the pictures. Leonardo da Vinci's anatomical drawings are used as examples…

Arnheim, Rudolf

1991-01-01

212

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

213

ISSUES TO ADDRESS... How do flaws in a material initiate failure?  

E-print Network

quantified; how do different material classes compare? · How do we estimate the stress to fracture? · How do S. Steel (metal) 304 S. Steel (metal) 4mm 160mm Mukhopadhyay......ME 370 #12;· DaVinci (500 yrs ago: · Largest, most stressed cracks grow first! K Kc = aY ps --Result 1: Max. flaw size dictates design stress

Mukhopadhyay, Sharmila M.

214

chaoTIc : (ka tik) adj. 1. in a state of chaos;  

E-print Network

's hopes for black ink are decided by the gods of movie fortune--namely, you and me. Americans may-office future. But if picking films is like randomly tossing darts, why do some people hit the bull's-eye more heads, they see "X-Men"; if the coin lands tails, it's "The Da Vinci Code." Since the coin has an equal

Koch, Christof

215

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

216

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

217

Ecological Applications, 22(8), 2012, pp. 21352143 2012 by the Ecological Society of America  

E-print Network

of Agricultural, Forest and Food Sciences, University of Turin, Via L. da Vinci 44, I-10095 Grugliasco, Italy 2 that the invasive ability of the exotic organism may be linked to its capacity to colonize substrates unavailable invasion; Circeo National Park, Italy; exotic pathogen; GIS; habitat association; Heterobasidion irregulare

California at Berkeley, University of

218

PAOLO GONTHIER ET AL. Running head: GIS identifies new host-pathogen association1  

E-print Network

of Agricultural, Forest and Food Sciences, University of Turin, Via L. da Vinci8 44, I-10095 Grugliasco, Italy9 2 related congener to test the hypothesis that the invasive ability of the22 exotic organism may be linked; exotic pathogen; GIS; habitat association; Heterobasidion38 irregulare; novel pathosystems; oaks; pines

California at Berkeley, University of

219

Nucléation, ascension et éclatement d'une bulle 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 quite recently, much interest was devoted to bubbles in Champagne wines and carbonated beverages. Since the time of the benedictine monk dom Pierre Perignon (1638-1715), champagne is

G. Liger-Belair

2006-01-01

220

Laurea Honoris Causa in Medicina e Chirugia  

E-print Network

of the American College of Surgeons Honorary Professor of Surgery, Universidad de Buenos Aires #12; Chancellor and Advances in Medicine by Italian Scientists Atherosclerosis was first described by Leonardo Da Vinci by Ruggero DeMaria and his team in 2007 [106] #12;Scientific Discoveries and Advances in Medicine by Italian

Genova, Università degli Studi di

221

Augmented Reality Environment with Virtual Fixtures for Robotic Telemanipulation in Space  

E-print Network

Augmented Reality Environment with Virtual Fixtures for Robotic Telemanipulation in Space Tian Xia an augmented reality frame- work, implemented on the master console of a modified da Vinci R surgical robot or causing damage to the spacecraft. As our main contribution, our approach combines elements of augmented

Whitcomb, Louis L.

222

The Xmath Integration Algorithm  

ERIC Educational Resources Information Center

The projects Xmath (Bringslid and Canessa, 2002) and dMath (Bringslid, de la Villa and Rodriguez, 2007) were supported by the European Commission in the so called Minerva Action (Xmath) and The Leonardo da Vinci programme (dMath). The Xmath eBook (Bringslid, 2006) includes algorithms into a wide range of undergraduate mathematical issues embedded…

Bringslid, Odd

2009-01-01

223

Applied Soil Ecology 62 (2012) 131141 Contents lists available at SciVerse ScienceDirect  

E-print Network

June 2012 Accepted 26 June 2012 Keywords: Snow Soil Nitrogen Tundra a b s t r a c t Alpine ecosystems nutrients in alpine soils to a 16-year factorial snow and N-fertilization experiment, Colorado Front Range Leonardo da Vinci 44, 10095 Grugliasco (TO), Italy b Institute of Arctic and Alpine Research and Department

Williams, Mark W.

224

Effects of rotation on the nonlinear friction of a damped dimer sliding on a periodic substrate I. G. Neide,1,2,* V. M. Kenkre,1,  

E-print Network

. MODEL AND ITS EQUATION OF MOTION This paper is a report of some striking features we have discovered laws were first discovered by Le- onardo da Vinci 1 and later stated by Amonton 2 and Coulomb 3 , much in either of the two problems. Particularly, the diffusion of molecules in potentials 7 is an interesting

Kenkre, V.M.

225

UC DAVIS FORENSIC SCIENCE CENTER 1909 Galileo Court, Suite B  

E-print Network

UC DAVIS FORENSIC SCIENCE CENTER 1909 Galileo Court, Suite B Davis, CA 95618 Directions to Cowell Blvd. Head south and turn left on Drew Avenue. Turn left on Galileo Court. Enter the driveway 1632 Da Vinci Court Davis, CA 95618 UC Davis Forensic Science Center (FSC) 1909 Galileo Court Suite B

Peisert, Sean

226

1500 1564 1600 1642 1700 HistoricalEventsGovernmentScience  

E-print Network

of Loyola Martin LUTHER Nic. MACHIAVELLI Desiderius ERASMUS John CALVIN Thomas HOBBES Benedict SPINOZA John LOCKE François RABELAIS Ben JONSON Michel de MONTAIGNE Miguel de CERVANTES Edmund SPENSER William SHAKESPEARE John MILTON MOLIERE Jean RACINE MICHELANGELO TITIAN Da VINCI Pieter BREUGHEL El GRECO Peter Paul

Hemenway, Mary Kay

227

IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE, VOL. 14, NO. 2, FEBRUARY 1992 99 Single Lens Stereo with a Plenoptic Camera  

E-print Network

throughout space whether we are aware of them or not. If an ordinary pinhole camera is placed near an object in the air, represent this body throughout space and on every side." Leonardo da Vinci [1] uses these words a pinhole camera at any given point in space, we will discover that an image is formed. The image

Adelson, Edward

228

Neurological Caricatures Since the 15 Century  

Microsoft Academic Search

During the Renaissance, different artists began to draw medical illustrations from various viewpoints. Leonardo da Vinci was among those who sought to portray the emotional as well as the physical qualities of man. Other European artists described caricatural aspects of medical activities. In Northern Europe, Albrecht Dürer, Hieronymus Bosch, and Pieter Brueghel were also famous for drawing caricatures. Later English

Lorenzo Lorusso

2008-01-01

229

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

230

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

231

\\  

Microsoft Academic Search

In recent years, an interest in religious (especially Christian) discourses has resurged, as evidenced by the popularity of the conservative Catholic film, The Passion of the Christ (2004) and Dan Brown's Church-conspiracy thriller The Da Vinci Code (2003). My thesis explores the character of Mary Magdalen within such texts, comparing hercontemporary imaginings with the imaginings of late medieval English texts.

Elizabeth C. Harmer

2005-01-01

232

The Code Delusion  

Microsoft Academic Search

No, I’m not cashing in on that titular domino effect that exploits best sellers. The temptations are great, given the rich rewards from a gullible readership, but offset, in the minds of decent writers, by the shame of literary hitchhiking. Thus, guides to the Louvre become The Da Vinci Code Walkthrough for Dummies, milching, as it were, several hot cows

Stan Kelly-bootle

2007-01-01

233

Brody School of Medicine at East Carolina University Title: Expanding or Creating New Clinical Programs/Services  

E-print Network

bariatric surgery technique; new equipment or new approach to traditional surgery, such as when the Da Vinci was introduced for cardiac and gynecology surgeries ; endoscopic procedures by physicians other than gastroenterology or general surgery; interventional pain management; practices for which ECU #12;Brody School

234

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

235

http://www.biotaneotropica.org.br USO E CONSERVAO DA ICTIOFAUNA NO ECOTURISMO DA  

E-print Network

de turismo de mínimo impacto, com cuidadoso protocolo de operação e redução da capacidade de carga, Ecoturismo, Valoração Econômica da Natureza, Turismo Sustentável, Peixes, Planalto da Bodoquena, Mato Grosso

Floeter, Sergio Ricardo

236

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

237

Current trends in robotic surgery for otolaryngology  

PubMed Central

As minimally invasive surgery has become common in head and neck surgery, the role of robotic surgery has expanded from thyroid surgery and transoral robotic surgery (TORS) of the oropharynx and supraglottic to other areas. Surgeons have advanced the limits of TORS, adapting lasers to the Da Vinci robot for glottic cancer, and combining existing techniques for transoral supraglottic laryngectomy and hypopharyngectomy to perform transoral total laryngectomy. Skull base approaches have been reported with some success in case reports and cadaver models, but the current instrument size and configuration limit the applicability of the current robotic system. Surgeons have reported reconstruction of the head and neck via local and free flaps. Using the previously reported approaches for thyroidectomy via modified facelift incision, neck dissection has also been reported. Future applications of robotic surgery in otolaryngology may be additionally expanded, as several new robotic technologies are under development for endolaryngeal work and neurotology. PMID:24069577

Byrd, J. Kenneth; Duvvuri, Umamaheswar

2013-01-01

238

Robotic trans-abdominal transplant nephrectomy for a failed renal allograft.  

PubMed

Minimally invasive surgery for removal of a failed renal allograft has not previously been reported. Herein, we report the first robotic trans-abdominal transplant nephrectomy (TN). A 34-year-old male with Alport's syndrome lost function of his deceased donor allograft after 12 years and presented with fever, pain over his allograft and hematuria. The operation was performed intra-abdominally using the Da Vinci Robotic Surgical System with four trocars. The total operative time was 235?min and the estimated blood loss was less than 25?cm(3) . There were no peri-operative complications observed and the patient was discharged to home less than 24?h postoperatively. The utilization of robotic technology facilitated the successful performance of a minimally invasive, trans-abdominal TN. PMID:25223377

Mulloy, M R; Tan, M; Wolf, J H; D'Annunzio, S H; Pollinger, H S

2014-12-01

239

Turbulence  

NASA Astrophysics Data System (ADS)

Written five centuries after the first studies of Leonardo da Vinci and half a century after A.N. Kolmogorov's first attempt to predict the properties of flow, this textbook presents a modern account of turbulence, one of the greatest challenges in physics. "Fully developed turbulence" is ubiquitous in both cosmic and natural environments, in engineering applications and in everyday life. Elementary presentations of dynamical systems ideas, probabilistic methods (including the theory of large deviations) and fractal geometry make this a self-contained textbook. This is the first book on turbulence to use modern ideas from chaos and symmetry breaking. The book will appeal to first-year graduate students in mathematics, physics, astrophysics, geosciences and engineering, as well as professional scientists and engineers.

Frisch, Uriel

1996-01-01

240

Science Nation: Surgical Robots  

NSDL National Science Digital Library

The da Vinci Surgical System has two main components. On top of the operating table is a device that has four arms. It looks like a giant insect that hovers right on top of the patient. Those arms are inserted into the patient through small incisions. In the simplest terms, it's really virtual reality crossing paths with surgery. The surgeon views a magnified 3-D high-resolution image of the operative site. The surgeon puts his hands in levers and as his hands move the levers, those levers translate his movements into precise movements by the arms of the robot. The surgeon "sees" and can "feel" movement and force of things like cutting and stitching as he watches it in 3-D.

241

Robotically assisted totally endoscopic coronary artery bypass surgery  

PubMed Central

Robotically assisted totally endoscopic coronary artery bypass surgery has emerged as a feasible and efficient alternative to conventional full sternotomy coronary artery bypass graft surgery in selected patients. This minimally invasive approach using the daVinci robotic system allows fine intrathoracic maneuvers and excellent view of the coronary arteries. Both on-pump and off-pump operations can be performed to treat single and multivessel disease. Hybrid approaches have the potential of offering complete revascularization with the “best of both worlds” from surgery (internal mammary artery anastomosis in less invasive fashion) and percutaneous coronary intervention (least invasive approach). In this article we review the indications, techniques, short and long term results, as well as current developments in totally endoscopic robotic coronary artery bypass operations. PMID:24251021

Canale, Leonardo Secchin; Mick, Stephanie; Mihaljevic, Tomislav; Nair, Ravi

2013-01-01

242

[Robot assisted tumor resection of an asymptomatic right atrial intracardiac lipoma; report of a case].  

PubMed

Primary cardiac tumors are relatively rare. No therapeutic guidelines have been established for the surgical indications of such cases. This creates therapeutic dilemmas, especially when the patient is asymptomatic. We describe the robot-assisted resection of an asymptomatic right atrial lipoma. A 63-year-old female was diagnosed to have a round mobile lipoma, measuring 27 mm in diameter in the right atrium near the junction with the inferior vena cava (IVC). Although she was asymptomatic, a surgical resection was indicated since the lipoma could cause an embolism or IVC obstruction due to its morbidity and potential to enlarge. Surgery was performed using the da Vinci Surgical System. A right-sided approach was used through 4 ports. The tumor was resected with a small portion of the right atrial wall. The total operation time was 214 minutes, and the total pump time was 84 minutes. The operation was performed while the heart was beating. PMID:21682051

Seguchi, Ryuta; Yashiki, Noriyoshi; Kato, Hiroki; Yamaguchi, Shojiro; Ishikawa, Norihiko; Tomita, Shigeyuki; Otake, Hiroshi; Watanabe, Go

2011-06-01

243

Navigation, robotics, and intraoperative imaging in spinal surgery.  

PubMed

Spinal navigation is a technique gaining increasing popularity. Different approaches as CT-based or intraoperative imaging-based navigation are available, requiring different methods of patient registration, bearing certain advantages and disadvantages. So far, a large number of studies assessed the accuracy of pedicle screw implantation in the cervical, thoracic, and lumbar spine, elucidating the advantages of image guidance. However, a clear proof of patient benefit is missing, so far. Spinal navigation is closely related to intraoperative 3D imaging providing an imaging dataset for navigational use and the opportunity for immediate intraoperative assessment of final screw position giving the option of immediate screw revision if necessary. Thus, postoperative imaging and a potential revision surgery for screw correction become dispensable.Different concept of spinal robotics as the DaVinci system and SpineAssist are under investigation. PMID:24309918

Ringel, Florian; Villard, Jimmy; Ryang, Yu-Mi; Meyer, Bernhard

2014-01-01

244

Robotic technology in spine surgery: current applications and future developments.  

PubMed

Medical robotics incrementally appears compelling in nowadays surgical work. The research regarding an ideal interaction between physician and computer assistance has reached a first summit with the implementation of commercially available robots (Intuitive Surgical's® da Vinci®). Moreover, neurosurgery--and herein spine surgery--seems an ideal candidate for computer assisted surgery. After the adoption of pure navigational support from brain surgery to spine surgery a meanwhile commercially available miniature robot (Mazor Surgical Technologies' The Spine Assist®) assists in drilling thoracic and lumbar pedicle screws. Pilot studies on efficacy, implementation into neurosurgical operating room work flow proved the accuracy of the system and we shortly outline them. Current applications are promising, and future possible developments seem far beyond imagination. But still, medical robotics is in its infancy. Many of its advantages and disadvantages must be delicately sorted out as the patients safety is of highest priority. Medical robots may achieve a physician's supplement but not substitute. PMID:20960350

Stüer, Carsten; Ringel, Florian; Stoffel, Michael; Reinke, Andreas; Behr, Michael; Meyer, Bernhard

2011-01-01

245

Robotic sleeve gastrectomy versus laparoscopic sleeve gastrectomy: a comparative study with 200 patients.  

PubMed

The da Vinci Surgical System has shown its possible indications in obesity surgery. This clinical study aims to elucidate the benefits, potentials, or problems of applying robotic technology for sleeve gastrectomy (SG). Data from 200 patients who underwent SG either performed by laparoscopy or robotic approach were assessed. A review of the data was analyzed with 1-year follow-up. There were 143 female patients. Mean age was 43.6 years. Mean BMI was 48.4 kg/m2. Operative time was longer for the robotic SG group (p?

Vilallonga, Ramon; Fort, José Manuel; Caubet, Enric; Gonzalez, Oscar; Armengol, Manel

2013-10-01

246

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

247

Seeking 'energy' vs. pain relief in spas in Brazil (Caldas da Imperatriz) and Portugal (Termas da Sulfurea).  

PubMed

This paper is a comparative ethnography of the therapeutic practices at two different spa locations: Caldas da Imperatriz, SC, Brazil, and Termas da Sulfurea in Cabeco de Vide, Portugal. The comparison reveals the existence of contrasting 'explanatory models' held by the spa-goers as well as by the official medical systems. In the Portuguese context this model is highly medicalized; in the Brazilian case, spa treatments are viewed as 'alternative' or 'complementary' therapy and are also related to religious philosophies. Each model corresponds to a different idiom expressing certain experiences and world views, one focusing on 'pains' (dores) and the other on 'energy' (energia), the former leading to the rationale of 'curing', the latter to the notion of 'energizing'. In this paper the author intends to analyze and contrast the categories found in these models, which originate from different conceptions of health, illness and healing for Brazilian and Portuguese spa-goers. PMID:21563001

Quintela, Maria Manuel

2011-04-01

248

A Survey of adaptation systems Keling DA #1  

E-print Network

Phone, Android smartphone and tablets etc.), home smart-devices (e.g. Smart-TV, Cook robot, etc.) and small smart] (user and environment context). Currently, increasing numbers of personal smart-devices (e.g. i wave2 . At the software level point of view, these smart-devices are still individual

Paris-Sud XI, Université de

249

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

250

78 FR 15006 - Privacy Act of 1974; System of Records  

Federal Register 2010, 2011, 2012, 2013

...Administration and Management (DA&M) Mentoring Program. System location: Triple Creek...job series, job grade, feedback on mentoring experience, discussion board posts...provide participants with an automated mentoring system to match learners with...

2013-03-08

251

75 FR 37410 - Privacy Act of 1974; System of Records  

Federal Register 2010, 2011, 2012, 2013

...personnel assigned to perform duties as an Unmanned Aerial System (UAS) crewmember. CATEGORIES OF RECORDS IN THE SYSTEM: DA Forms...qualifications and training data of each aviator, crew member, UAS operator and flight surgeon in aviation service; and to...

2010-06-29

252

Next Generation PanDA Pilot for ATLAS and Other Experiments  

NASA Astrophysics Data System (ADS)

The Production and Distributed Analysis system (PanDA) has been in use in the ATLAS Experiment since 2005. It uses a sophisticated pilot system to execute submitted jobs on the worker nodes. While originally designed for ATLAS, the PanDA Pilot has recently been refactored to facilitate use outside of ATLAS. Experiments are now handled as plug-ins such that a new PanDA Pilot user only has to implement a set of prototyped methods in the plug-in classes, and provide a script that configures and runs the experiment-specific payload. We will give an overview of the Next Generation PanDA Pilot system and will present major features and recent improvements including live user payload debugging, data access via the Federated XRootD system, stage-out to alternative storage elements, support for the new ATLAS DDM system (Rucio), and an improved integration with glExec, as well as a description of the experiment-specific plug-in classes. The performance of the pilot system in processing LHC data on the OSG, LCG and Nordugrid infrastructures used by ATLAS will also be presented. We will describe plans for future development on the time scale of the next few years.

Nilsson, P.; Barreiro Megino, F.; Caballero Bejar, J.; De, K.; Hover, J.; Love, P.; Maeno, T.; Medrano Llamas, R.; Walker, R.; Wenaus, T.; Atlas Collaboration

2014-06-01

253

Robotic Repair of Giant Paraesophageal Hernias  

PubMed Central

Background and Objectives: Giant paraesophageal hernia accounts for 5% of all hiatal hernias, and it is commonly seen in elderly patients with comorbidities. Some series report complication rates up to 28%, recurrence rates between 10% and 25%, and a mortality rate close to 2%. Recently, the da Vinci Surgical System (Intuitive Surgical, Sunnyvale, CA, USA) has shown equivocal benefits when used for elective surgeries, whereas for complex procedures, the benefits appear to be clearer. The purpose of this study is to present our preliminary experience in robotic giant paraesophageal hernia repair. Methods: We retrospectively collected data from patients who had a diagnosis of giant paraesophageal hernia and underwent a paraesophageal hernia repair with the da Vinci Surgical System. Results: Nineteen patients (12 women [63.1%]) underwent surgery for giant paraesophageal hernia at our center. The mean age was 70.4 ± 13.9 years (range, 40–97 years). The mean American Society of Anesthesiologists score was 2.15. The mean surgical time and hospital length of stay were 184.5 ± 96.2 minutes (range, 96–395 minutes) and 4.3 days (range, 2–22 days), respectively. Nissen fundoplications were performed in 3 cases (15.7%), and 16 patients (84.2%) had mesh placed. Six patients (31.5%) presented with gastric volvulus, and 2 patients had other herniated viscera (colon and duodenum). There were 2 surgery-related complications (10.5%) (1 dysphagia that required dilatation and 1 pleural injury) and 1 conversion to open repair (partial gastric resection). No recurrences or deaths were observed in this series. Conclusion: In our experience robotic giant paraesophageal hernia repair is not different from the laparoscopic approach in terms of complications and mortality rate, but it may be associated with lower recurrence rates. However, larger series with longer follow-up are necessary to further substantiate our results. PMID:24398199

Seetharamaiah, Rupa; Romero, Rey Jesus; Kosanovic, Radomir; Gallas, Michelle; Verdeja, Juan-Carlos; Rabaza, Jorge

2013-01-01

254

Optimal carbon dioxide insufflation pressure during robot-assisted thyroidectomy in patients with various benign and malignant thyroid diseases  

PubMed Central

Background Currently, data are not available concerning a safe insufflation pressure that provides a proper view of the surgical field without adverse metabolic and hemodynamic changes in humans undergoing the robot-assisted thyroidectomy bilateral axillo-breast approach (BABA) using the da Vinci robotic surgical system. The purpose of this study was to determine the optimal carbon dioxide (CO2) insufflation pressure in patients with various benign and malignant thyroid diseases when using the da Vinci robotic surgical system. Methods A total of 32 patients underwent thyroid surgery at 6 (n = 15), 9 (n = 15), and 12 (n = 2) mmHg. The partial pressure of carbon dioxide (PaCO2), pH, cardiac output, heart rate, and mean arterial pressure were measured at baseline, 30 min and 1, 1.5, and 2 hours after CO2 insufflation, and 30 min after desufflation. Results CO2 insufflation of 12 mmHg caused severe facial subcutaneous emphysema, hypercarbia, and acidosis during robot-assisted thyroidectomy with BABA. The study was stopped before completion for the patients’ safety in accordance with the study protocol. Applying 6- or 9- mmHg of CO2 insufflation pressure caused increases in PaCO2 and decreases in arterial pH. However, vital signs were stable and pH and PaCO2 were within the physiologic range during the surgery in the 6- and 9-mmHg groups. Conclusions We propose that a CO2 insufflation pressure under 10 mmHg in robot-assisted thyroidectomy with BABA is the optimal insufflation pressure for patient safety. PMID:23017080

2012-01-01

255

ADVOCACIA-GERAL DA UNIO PROCURADORIA-GERAL FEDERAL  

E-print Network

ADMINISTRATIVOS E DECIS�RIOS. DELIMITA��O DA ATUA��O ADMINISTRATIVA. RESPONSABILIDADE CIVIL, PENAL E/2013, em anexo) acerca, em especial, da "responsabilidade dos agentes públicos transitórios" e da CPAD

Floeter, Sergio Ricardo

256

VARIAÇÃO NAS CARACTERÍSTICAS FÍSICAS E QUÍMICAS DA ÁGUA DO RIO TOCANTINS A JUSANTE DA USINA HIDRELÉTRICA SERRA DA MESA (GO), EM DIFERENTES ÉPOCAS DO ANO  

Microsoft Academic Search

RESUMO O presente trabalho objetivou estudar a avaliação das características físicas e químicas das águas do rio Tocantins (TO), a jusante da UHE Serra da Mesa, nas épocas seca e chuvosa. Os dados foram coletados junto ao Projeto de Monitoramento Limnológico do rio Tocantins a jusante da UHE Serra da Mesa, como integrante de um convênio firmado entre Universidade do

Daniela Alves Oliveira; Ricardo H. P. B. Peixoto; Cleverland Carvalho de Araújo; Oliveira Barros; Ana Márcia; Fernandes da Cruz

257

Virtual Observatory Publishing with DaCHS  

E-print Network

The Data Center Helper Suite DaCHS is an integrated publication package for building Virtual Observatory (VO) and Web services, supporting the entire workflow from ingestion to data mapping to service definition. It implements all major data discovery, data access, and registry protocols defined by the VO. DaCHS in this sense works as glue between data produced by the data providers and the standard protocols and formats defined by the VO. This paper discusses central elements of the design of the package and gives two case studies of how VO protocols are implemented using DaCHS' concepts.

Demleitner, Markus; Rothmaier, Florian; Wambsganss, Joachim

2014-01-01

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

Virtual observatory publishing with DaCHS  

NASA Astrophysics Data System (ADS)

The Data Center Helper Suite DaCHS is an integrated publication package for building VO and Web services, supporting the entire workflow from ingestion to data mapping to service definition. It implements all major data discovery, data access, and registry protocols defined by the VO. DaCHS in this sense works as glue between data produced by the data providers and the standard protocols and formats defined by the VO. This paper discusses central elements of the design of the package and gives two case studies of how VO protocols are implemented using DaCHS' concepts.

Demleitner, M.; Neves, M. C.; Rothmaier, F.; Wambsganss, J.

2014-11-01

260

The roles of the reward system in sleep and dreaming.  

PubMed

The mesolimbic dopaminergic system (ML-DA) allows adapted interactions with the environment and is therefore of critical significance for the individual's survival. The ML-DA system is implicated in reward and emotional functions, and it is perturbed in schizophrenia, addiction, and depression. The ML-DA reward system is not only recruited during wakeful behaviors, it is also active during sleep. Here, we introduce the Reward Activation Model (RAM) for sleep and dreaming, according to which activation of the ML-DA reward system during sleep contributes to memory processes, to the regulation of rapid-eye movement (REM) sleep, and to the generation and motivational content of dreams. In particular, the engagement of ML-DA and associated limbic structures prioritizes information with high emotional or motivational relevance for (re)processing during sleep and dreaming. The RAM provides testable predictions and has clinical implications for our understanding of the pathogenesis of major depression and addiction. PMID:22669078

Perogamvros, Lampros; Schwartz, Sophie

2012-09-01

261

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

262

Origin of the DA and non-DA white dwarf stars  

NASA Technical Reports Server (NTRS)

Various proposals for the bifurcation of the white dwarf cooling sequence are reviewed. 'Primordial' theories, in which the basic bifurcation of the white dwarf sequence is rooted in events predating the white dwarf stage of stellar evolution, are discussed, along with the competing 'mixing' theories in which processes occurring during the white dwarf stage are responsible for the existence of DA or non-DA stars. A new proposal is suggested, representing a two-channel scenario. In the DA channel, some process reduces the hydrogen layer mass to the value of less than 10 to the -7th. The non-DA channel is similar to that in the primordial scenario. These considerations suggest that some mechanism operates in both channels to reduce the thickness of the outermost layer of the white dwarf. It is also noted that accretion from the interstellar medium has little to do with whether a particular white dwarf becomes a DA or a non-DA star.

Shipman, Harry L.

1989-01-01

263

Tese Doutoramento Cotutela Internacional U.Minho: Cincias da Comunicao, Teoria da Cultura  

E-print Network

! ! Tese Doutoramento Cotutela Internacional U.Minho: Ciências da Comunicação, Teoria da Cultura U.ParisDescartes: Sociologia 22 de junho de 2013, Paris Maria da Luz CORREIA Intermitências na cultura visual contemporânea: o-00932174,version1-16Jan2014 #12;7 resumo intermitências na cultura visual contemporânea: o postal ilustrado

Boyer, Edmond

264

Jornal da UFF PROGRAMA DE ACOLHIMENTO ESTUDANTIL  

E-print Network

com a impossibilidade de fugir dela. O segundo momento se refere à morte da cachorra Baleia. Tanto progressiva animalização de Fabiano e sua família. Esta humanização atinge seu ápice no mo- mento da morte a nossa idéia de morte. As imagens do filme nos transmitem a sensação de afastamen- to, de perda do

Souza, Max O.

265

DaFEx: Database of Facial Expressions  

Microsoft Academic Search

\\u000a DaFEx (Database of Facial Expressions) is a database created with the purpose of providing a benchmark for the evaluation\\u000a of the facial expressivity of Embodied Conversational Agents (ECAs). DaFEx consists of 1008 short videos containing emotional\\u000a facial expressions of the 6 Ekman’s emotions plus the neutral expression. The facial expressions were recorded by 8 italian\\u000a professional actors (4 male and

Alberto Battocchi; Fabio Pianesi; Dina Goren-bar

2005-01-01

266

PanDA Pilot Submission using Condor-G: Experience and Improvements  

NASA Astrophysics Data System (ADS)

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, Xin; Hover, John; Wlodek, Tomasz; Wenaus, Torre; Frey, Jaime; Tannenbaum, Todd; Livny, Miron; ATLAS Collaboration

2011-12-01

267

Avaliação de frações antigênicas da forma metacestódea de Taenia saginata no imunodiagnóstico da neurocisticercose humana.  

E-print Network

??A utilização de metacestódeos de Taenia saginata como antígeno alternativo constitui uma importante ferramenta no sorodiagnóstico da neurocisticercose humana (NC). A reatividade cruzada com indivíduos… (more)

Heliana Batista de Oliveira

2008-01-01

268

A history of eye gaze tracking Abdallahi Ould Mohamed Matthieu Perreira Da Silva  

E-print Network

A history of eye gaze tracking Abdallahi Ould Mohamed Matthieu Perreira Da Silva Vincent Courboulay December 18, 2007 hal-00215967,version1-24Jan2008 #12;Abstract Applications that use eye and gaze have a his- torical review of eye tracker systems and applications. We address the use of gaze tracking

Paris-Sud XI, Université de

269

ACCURACY AND RELIABILITY OF CEMS AT SUBPART DA (ELECTRIC UTILITIES) FACILITIES  

EPA Science Inventory

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

270

A Survey on Workflow Aspects in Content Management Pedro Pico, Alberto Rodrigues da Silva  

E-print Network

A Survey on Workflow Aspects in Content Management Systems Pedro Pico, Alberto Rodrigues da Silva organizations more agile, flexible and dynamic concerning the management of their contents: business-oriented structured and no-structured information. A CMS's extra feature is Workflow support since it can allow task

da Silva, Alberto Rodrigues

271

Converting a successful research project into a sustainable service: The case of the SoDa Web service  

Microsoft Academic Search

Information on solar radiation is a critical issue in several environmental domains. The means for accessing information suffer from severe drawbacks. The SoDa project was launched (2000e2003, IST program of the European Commission) to bring solutions by an efficient use of information and communication technologies. Integration of information sources of different natures was realized by the SoDa Intelligent System. Surveys

Benoît Gschwind; Lionel Ménard; Michel Albuisson; Lucien Wald

2006-01-01

272

XI SIMPÓSIO DE ESPECIALISTAS EM PLANEJAMENTO DA OPERAÇÃO E EXPANSÃO ELÉTRICA XI SYMPOSIUM OF SPECIALISTS IN ELECTRIC OPERATIONAL AND EXPANSION PLANNING High Voltage Static VAR Compensators with Adaptive Control Systems: A Comparison among Studies in PSCAD\\/EMTDC™ and Tests in Real Time Digital Simulator  

Microsoft Academic Search

SUMMARY This paper presents the simulations results of stro ng and small disturbances in PSCAD \\/ EMTDC™, performed in the area of influence of Funil and Bom Jesus da Lapa Static VAR Compensators (SVCs), considering a detailed modeling of 230 and 500kV power grids associated to such equipments. A detailed modeling of Funil SVC is used and the infl uence

XI SEPOPE; Manfredo Correia Lima

273

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

274

ELASTICIDADE-PREÇO DA DEMANDA E A COBRANÇA PELO USO DA ÁGUA  

Microsoft Academic Search

Resumo - Discute-se o parâmetro elasticidade-preço da demanda por água dos usuários residencial, industrial e agrícola através de algumas estimativas encontradas na literatura. Já que tal parâmetro auxilia na análise quanto aos impactos relacionados à arrecadação promovida e às retrações de uso da água, é feita uma reflexão sobre a sua importância para o aprimoramento dos estudos de Abstract -

Márcia Maria Rios Ribeiro; Antonio Eduardo Lanna; Jaildo Santos Pereira

275

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...

276

76 FR 27861 - Airworthiness Directives; Diamond Aircraft Industries GmbH Models DA 42, DA 42 NG, and DA 42 M-NG...  

Federal Register 2010, 2011, 2012, 2013

...39-16694; AD 2011-10-13] RIN 2120-AA64 Airworthiness Directives; Diamond Aircraft Industries GmbH Models DA 42, DA 42 NG, and DA 42 M-NG Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT)....

2011-05-13

277

TEREMOS QUE TROCAR ENERGIA POR COMIDA? ANÁLISE DO IMPACTO DA EXPANSÃO DA PRODUÇÃO DE CANA-DE-AÇÚCAR SOBRE O PREÇO DA TERRA E DOS ALIMENTOS  

Microsoft Academic Search

O trabalho discute os principais argumentos contrários a expansão da produção de cana-de-açúcar no país, sobretudo para produção de etanol. Mais especificamente, um dos obstáculos à expansão da produção desta commodity diz respeito ao seu potencial impacto sobre o preço da terra e, conseqüentemente, sobre os preços dos alimentos. Os defensores deste ponto de vista argumentam que a pressão sobre

Andre Luiz Squarize Chagas; André Luis Squarize Chagas

2008-01-01

278

Resolvendo a equação de Schrödinger através da substituição direta da série de potências  

E-print Network

This work presents a direct and highly accurate method to solve ordinary differential equations, in particular the Schr\\"odinger equation in one dimension, through the direct substitution of a power series solution to obtain a purely algebraical system containing the recurrence relations among the series coefficients. With these recurrence relations at hand it is possible to build an extremely simple routine using only basic arithmetic operations to find solutions of very high accuracy at a very low cost of machine resources. For the Schr\\"odinger equation the energy eigenvalues may be estimated by a very simple method, an this estimate may be easily refined using the recurrence relations until the specified tolerance has been reached, which allows one to find high accuracy wavefunctions even for states with very high quantum numbers. ----- Este trabalho apresenta um m\\'etodo direto e de alta acur\\'acia para resolver equa\\c{c}\\~oes diferenciais ordin\\'arias, em particular a equa\\c{c}\\~ao de Schr\\"odinger em uma dimens\\~ao, atrav\\'es da substitui\\c{c}\\~ao direta de uma solu\\c{c}\\~ao em s\\'erie de pot\\^encias para obter um sistema puramente alg\\'ebrico contendo as rela\\c{c}\\~oes de recorr\\^encia entre os coeficientes da s\\'erie. De posse dessas rela\\c{c}\\~oes de recorr\\^encia \\'e poss\\'ivel construir uma rotina extremamente simples, usando somente opera\\c{c}\\~oes aritm\\'eticas b\\'asicas, para encontrar solu\\c{c}\\~oes de alt\\'issima acur\\'acia a um custo muito reduzido de recursos de m\\'aquina. Para a equa\\c{c}\\~ao de Schr\\"odinger, os autovalores de energia podem ser estimados por um m\\'etodo simples, e a estimativa pode ser facilmente refinada com o uso das rela\\c{c}\\~oes de recorr\\^encia at\\'e que se alcance a toler\\^ancia especificada, o que permite encontrar fun\\c{c}\\~oes de onda de alta acur\\'acia mesmo para estados com n\\'umero qu\\^antico alto.

Fabio E. R. Campolim

2014-08-25

279

DA495 - an aging pulsar wind nebula  

E-print Network

We present a radio continuum study of the pulsar wind nebula (PWN) DA 495 (G65.7+1.2), including images of total intensity and linear polarization from 408 to 10550 MHz based on the Canadian Galactic Plane Survey and observations with the Effelsberg 100-m Radio Telescope. Removal of flux density contributions from a superimposed \\ion{H}{2} region and from compact extragalactic sources reveals a break in the spectrum of DA 495 at 1.3 GHz, with a spectral index ${\\alpha}={-0.45 \\pm 0.20}$ below the break and ${\\alpha}={-0.87 \\pm 0.10}$ above it (${S}_\

Kothes, R; Reich, W; Safi-Harb, S; Arzoumanian, Z

2008-01-01

280

Reward and aversion in a heterogeneous midbrain dopamine system.  

PubMed

The ventral tegmental area (VTA) is a heterogeneous brain structure that serves a central role in motivation and reward processing. Abnormalities in the function of VTA dopamine (DA) neurons and the targets they influence are implicated in several prominent neuropsychiatric disorders including addiction and depression. Recent studies suggest that the midbrain DA system is composed of anatomically and functionally heterogeneous DA subpopulations with different axonal projections. These findings may explain a number of previously confusing observations that suggested a role for DA in processing both rewarding as well as aversive events. Here we will focus on recent advances in understanding the neural circuits mediating reward and aversion in the VTA and how stress as well as drugs of abuse, in particular cocaine, alter circuit function within a heterogeneous midbrain DA system. This article is part of a Special Issue entitled 'NIDA 40th Anniversary Issue'. PMID:23578393

Lammel, Stephan; Lim, Byung Kook; Malenka, Robert C

2014-01-01

281

MINISTRIO DA EDUCAO UNIVERSIDADE FEDERAL DO PARAN  

E-print Network

. APROVA��ES AD REFERENDUM: I) Justificativa de falta em atividades do SIEPE Palotina: a) Carta da Professora e SIEPE que solicita a recondução ao Programa de Bolsas Extensão: APROVADO. II) Propostas de

Paraná, Universidade Federal do

282

Desafios da integrao de fontes renovveis nos  

E-print Network

necessidade de deslocamentos Aproveitamento de energia solar , eólica e biomassa Setor de transporte Mudanças+ Desafios da integração de fontes renováveis nos sistemas de energia convencionais Gilberto De escala? Sistemas convencionais de energia Carvão, petróleo e gás natural Nuclear Hidroeletricidade

Ferreira, Márcia M. C.

283

Avaliação da aprendizagem no ensino superior. \\  

Microsoft Academic Search

*** Resumo: O trabalho apresenta como tema central a avaliação da aprendizagem no ensino superior. Trata-se de uma investigação das pré-concepções dos professores universitários sobre a avaliação e se estas apresentam ou não uma relação mais objetiva com a aprendizagem. Com a hipótese de trabalho de que a nota tende a ser a expressão do comportamento do aluno e não

Luiz Roberto Gomes; Jomar Barros Filho; João Luiz Pegoraro; Dirceu da Silva; Fernanda Oliveira Simon

284

Kontrollierte therapeutische Systeme (Controlled drug delivery systems)  

NASA Astrophysics Data System (ADS)

Es gibt eine grosse Anzahl von Arzneistoffen, die nicht mit der höchsten Effizienz eingesetzt werden können, weil das geeignete therapeutische System (drug delivery system) für die optimale Applikation fehlt. Viele Arzneistoffe setzen eine häufige Anwendung voraus und sind oft mit mehr oder weniger starken Nebenwirkungen oder aber mit Beeinträchtigungen von Arbeits- und Lebensrhythmus der Patienten verbunden. Der therapeutische Erfolg einer medikamentösen Behandlung setzt eine korrekte Diagnose, die Wahl der richtigen Wirksubstanz sowie ihr Vorliegen in geeigneter Darreichungsform voraus. Zudem muss ein genauer Verabreichungsplan erstellt werden, dessen Einhaltung seitens der Patienten eine wesentliche Voraussetzung für die optimale Wirkung des Arzneistoffes ist. Das Mass, mit dem eine Wirksubstanz therapeutisch voll genutzt werden kann, korreliert direkt mit der Darreichungsform, in der sie angewandt wird. Da viele hochwirksame Arzneimittel bereits existieren, hat sich, neben Neuentwicklungen, das Interesse im vergangenen Jahrzehnt der Optimierung von Arzneimittelwirkungen durch neue Darreichungsformen zugewandt.

Ha, Suk-Woo; Wintermantel, Erich

285

Mulheres atletas: re-significações da corporalidade feminina  

Microsoft Academic Search

R R R R Resumo esumo esumo esumo esumo: A participação esportiva das mulheres contribui para uma re-significação da corporalidade feminina? Lembrando da idéia de Susan Brownmiller, para quem a feminilidade representa, na sociedade moderna, uma \\

Miriam Adelman

2003-01-01

286

NCLEO DE DENVOLVIMENTO INFANTIL DA UFSC: contornos da sua criao e trajetria1  

E-print Network

pelas mulheres trabalhadoras, feministas, empregadas de empresas públicas e privadas, e pelos sindicatos trabalhista das mulheres, na medida em que o atendimento inicia apenas aos bebês e somente de mães da

Floeter, Sergio Ricardo

287

NCLEO DE DENVOLVIMENTO INFANTIL DA UFSC: contornos da sua trajetria1  

E-print Network

década de 70, processo desencadeado pelos movimentos sociais e liderado pelas mulheres trabalhadoras trabalhista das mulheres, na medida em que o atendimento inicia apenas aos bebês e somente de mães da

Floeter, Sergio Ricardo

288

Agarose and Polyacrylamide Gel Electrophoresis Methods for Molecular Mass Analysis of 5–500 kDa Hyaluronan  

PubMed Central

Agarose and polyacrylamide gel electrophoresis systems for the molecular mass-dependent separation of hyaluronan (HA) in the size range of approximately 5–500 kDa have been investigated. For agarose-based systems, the suitability of different agarose types, agarose concentrations, and buffers systems were determined. Using chemoenzymatically synthesized HA standards of low polydispersity, the molecular mass range was determined for each gel composition, over which the relationship between HA mobility and logarithm of the molecular mass was linear. Excellent linear calibration was obtained for HA molecular mass as low as approximately 9 kDa in agarose gels. For higher resolution separation, and for extension to molecular masses as low as approximately 5 kDa, gradient polyacrylamide gels were superior. Densitometric scanning of stained gels allowed analysis of the range of molecular masses present in a sample, and calculation of weight-average and number-average values. The methods were validated for polydisperse HA samples with viscosity-average molecular masses of 112, 59, 37, and 22 kDa, at sample loads of 0.5 µg (for polyacrylamide) to 2.5 µg (for agarose). Use of the methods for electrophoretic mobility shift assays was demonstrated for binding of the HA-binding region of aggrecan (recombinant human aggrecan G1-IGD-G2 domains) to a 150 kDa HA standard. PMID:21684248

Bhilocha, Shardul; Amin, Ripal; Pandya, Monika; Yuan, Han; Tank, Mihir; LoBello, Jaclyn; Shytuhina, Anastasia; Wang, Wenlan; Wisniewski, Hans-Georg; de la Motte, Carol; Cowman, Mary K.

2011-01-01

289

The 0.33 Day DA Plus DME Binary BPM 6502  

NASA Astrophysics Data System (ADS)

We have obtained a series of spectroscopic measurements of the high proper-motion star BPM 6502 showing Balmer emission superposed upon the absorption lines. Radial velocity measurements determined by tracing optical absorption and emission lines show that the star is a binary system comprised of a DA white dwarf and an M dwarf with an orbital period of 0.33678 days. The space motion of the system falls within the general white dwarf population, and the system is not expected to initiate mass transfer within a Hubble time.

Kawka, Adela; Vennes, Stéphane; Dupuis, Jean; Koch, Rolf

2000-12-01

290

Teoria da Medida e outras contribuic~oes  

E-print Network

~ao a Teoria da Medida e a Teoria das Fun¸c~oes Mensur'aveis. No livro de Lebesgue e nos de outros autores das extensa. Mesmo no livro de Titchmarch (1a. edi¸c~ao 1932), s'o a parte da Teoria da Medida ocu­ pava

Kohayakawa, Yoshiharu

291

40 CFR 60.45Da - Standard for mercury (Hg).  

Code of Federal Regulations, 2011 CFR

... 2011-07-01 false Standard for mercury (Hg). 60.45Da Section 60.45Da...18, 1978 § 60.45Da Standard for mercury (Hg). (a) For each coal-fired...January 30, 2004, any gases that contain mercury (Hg) emissions in excess of each...

2011-07-01

292

40 CFR 60.45Da - Standard for mercury (Hg).  

Code of Federal Regulations, 2010 CFR

... 2010-07-01 false Standard for mercury (Hg). 60.45Da Section 60.45Da...18, 1978 § 60.45Da Standard for mercury (Hg). (a) For each coal-fired...January 30, 2004, any gases that contain mercury (Hg) emissions in excess of each...

2010-07-01

293

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

294

Feminização e transmissão intergeneracional da pobreza no Brasil  

Microsoft Academic Search

Palavras-chave: feminização da pobreza; transmissão intergeracional da pobreza; domicílios chefiados por mulher Resumo: A feminização da pobreza (FP) tem sido vista como um resultado de mudanças na estrutura familiar, as quais levam as mulheres a assumir o papel de provedoras dos domicílios onde vivem. Conseqüentemente, os estudos sobre FP tomam com indicador de pobreza, a prevalência de domicílios chefiados por

Maria Salet Ferreira Novellino; João Raposo Belchior

295

A ROBÓTICA PEDAGÓGICAO COTEXTO DA EDUCAÇÃO IFATIL: AUXILADO O ALFABETISMO  

Microsoft Academic Search

A presente pesquisa expõe um pouco do percurso histórico da robótica aplicada à educação, seu aparecimento, características e benefícios para a aprendizagem, buscando respaldo no Projeto de Inclusão Digital com Robôs, desenvolvido pelo Departamento de Engenharia de Computação e Automação da Universidade Federal do Rio Grande do Norte, para descrever uma das propostas de aplicação da robótica pedagógica no âmbito

Akynara Aglaé; R. S. da Silva; Graças P. Coelho; Renata Pitta Barros; Luiz Marcos; G. Gonçalves

296

PARA LER VYGOTSKI: RECUPERANDO PARTE DA HISTORICIDADE PERDIDA  

Microsoft Academic Search

Partindo do pressuposto de que é no campo próprio da batalha humana que as idéias, os conceitos ou teorias encontram seu pleno significado histórico, e que o campo concreto da batalha, em que se transformou a sociedade russa pós-revolucionária para tornar-se diferente do que era, está vivo nas linhas e entrelinhas das idéias, dos conceitos, enfim, da teoria de Vygotski,

Silvana Calvo Tuleski

297

XVI Encontro de Economia da Regio Sul -ANPEC SUL 2013 XVI Encontro de Economia da Regio Sul  

E-print Network

XVI Encontro de Economia da Região Sul - ANPEC SUL 2013 1 XVI Encontro de Economia da Região Sul Programa de Pós Graduação em Desenvolvimento Econômico Curitiba - PR #12;XVI Encontro de Economia da Região/UFPR) Secretárias do PPGDE Aurea Koch Ivone Polo #12;XVI Encontro de Economia da Região Sul - ANPEC SUL 2013 3

Paraná, Universidade Federal do

298

Fatores de risco que afetam as complicações da dissecação da veia safena na revascularização cirúrgica do miocárdio  

Microsoft Academic Search

Resumo Objetivo: O problema da cicatrização de feridas é comumente observado após procedimentos de revascularização do miocárdio. Nosso objetivo é determinar a prevalência e os indicadores de complicação na dissecação da veia safena após procedimentos de revascularização coronária. Métodos: Após revisão e aprovação pelo comitê de ética da instituição, uma revisão retrospectiva de 4029 procedimentos de revascularização foi realizada com

Monir Abbaszadeh; MK Arabnia; A. RABBANI; MH Mandegar; S Vahedi

2008-01-01

299

Analysis of multithreading and real-time scheduling for the flexible communication subsystem Da CaPo on Chorus  

NASA Astrophysics Data System (ADS)

Da CaPo is a highly flexible communication subsystem to perform all communication tasks of middleware solutions like CORBA. Main focus of the first Da CaPo prototype is on the relationship of protocol functionality, QoS, and resource utilization. We are currently redesigning Da CaPo for the real-time (mu) -kernel operating system Chorus. Support for guaranteed QoS via appropriate scheduling mechanisms, efficiency, and a simple programming model are the main goals for the new design and implementation. In this paper, we analyze three multithreading architectures for Da CaPo, i.e., thread per module, thread per packet, and thread per control, in combination with the real-time scheduling policies rate monotonic and earliest deadline first. We use measurements from the first Da CaPo prototype to quantify the execution times of Da CaPo modules, and measurements from the electronic classroom as real-life workload. Our simulation results show that thread per module and thread per packet perform better than thread per control, and RM should be preferred to EDF.

Plagemann, Thomas

1999-01-01

300

The DA{phi}NE-Light Facility  

SciTech Connect

The new Synchrotron Radiation facility at Frascati exploits the intense photon emission from DA{phi}NE, the 0,51 GeV storage ring circulating over 1 A of electrons. Among the three beamlines commissioned, the Synchrotron INfrared Beamline At Da{phi}ne (SINBAD) is fully operational by a brilliant SR beam spanning the entire IR. Recently, the soft X-ray beamline has been characterized and, once implemented the double-crystal monocromator, X-ray Absorption Spectroscopy is applied on material standards in the distinguishing energy region below 4 keV. An UltraViolet line, presently dedicated to photobiology dosimetry, has also given first results on cell irradiation in the UVB band.

Burattini, Emilio [Universita degli Studi di Verona, Facolta di Scienze MM.FF.NN., strada LeGrazie 15, I-37138 Verona (Italy); Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali di Frascati, via Fermi 40, I-00044 Frascati (Italy); Cinque, Gianfelice; Dabagov, Sultan; Grilli, Antonio; Marcelli, Augusto; Pace, Elisabetta; Piccinini, Massimo; Raco, Agostino [Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali di Frascati, via Fermi 40, I-00044 Frascati (Italy); Monti, Francesca [Universita degli Studi di Verona, Facolta di Scienze MM.FF.NN., strada LeGrazie 15, I-37138 Verona (Italy)

2004-05-12

301

Que pensa você da arte de esquerda?  

E-print Network

, senhores feudais (grileiros) e vassalos (posseiros), etc., e através dessa fábula se esquematiza a realidade nacional, indicando-se os meios hábeis para a derrubada da ditadura, a instauração de uma nova justiça, e outras coisas lindas e oportunas... se tal não bastasse, decidiu o governo ser mais sutil e resolver seus problemas estudantis e operários com as patas dos cavalos, os cassetetes e as balas. Maniqueísta foi a ditadura. Contra ela e contra os seus métodos deve maniqueísticamente...

Boal, Augusto

1970-04-01

302

Dossier suivi par : Mercedes Da Palma  

E-print Network

.da_palma@upmc.fr Adresse postale : 4, Place Jussieu Boîte courrier n° 1901 75252 PARIS Cedex Paris, le 11 décembre 2013 pourcentage de la baisse. Je profite aussi de ce courrier pour vous informer que la règle de signature de l jointe à ce courrier Le Vice-président Recherche et innovation #12;

303

DA 495: An Aging Pulsar Wind Nebula  

Microsoft Academic Search

We present a radio continuum study of the pulsar wind nebula (PWN) DA 495 (G65.7+1.2), including images of total intensity and linear polarization from 408 to 10550 MHz based on the Canadian Galactic Plane Survey and observations with the Effelsberg 100 m Radio Telescope. Removal of flux density contributions from a superimposed H II region and from compact extragalactic sources

R. Kothes; T. L. Landecker; W. Reich; S. Safi-Harb; Z. Arzoumanian

2008-01-01

304

Ministrio da Educao UNIVERSIDADE FEDERAL DO PARAN  

E-print Network

CONCURSO 1.1 - Setor: Ciências Biológicas 1.1.1 ­ Departamento: Anatomia Área de Conhecimento: Anatomia presente edital, de acordo com o respectivo setor. 1.1.1 ­ Departamento: Anatomia Área de Conhecimento: Anatomia Odontológica Processo: 23075.055686/2013-21 Número de vagas: 01 (uma) #12;Ministério da Educação

Paraná, Universidade Federal do

305

Raízes pós-mitológicas da Astronomia Clássica  

NASA Astrophysics Data System (ADS)

Apresentamos como a invenção de um modelo astronômico e cosmológico fundado em causas naturais foi um processo gestado num ambiente cultural específico, o do advento do pensamento pós-mitológico, que tem como sua raiz mais funda a trajetória particular da Grécia Antiga, com ênfase na resolução de uma grave crise social e a evolução do mundo clássico para o contexto espiritual de um império universal.

di Bartolo, L.; Villas da Rocha, J. F.

2004-02-01

306

DA 16 local CU Clair Engle  

E-print Network

71 SR- LV C70 Los Vaqueros SR- ASF D16 C21 C16Capay Diversion Dam Winters, Moore & West Adams Canals Dam D64 CLEAR CREEK TRINITY RIVER LEWISTON LAKE INFLOW COTTONWOO D CREEK THOMES CREEK DA 58: COW CREEK and Tuolomne D64 2 D64 9 D64 3 D64 5 D64 6 D64 7 SR- 20 Lake McClure New Exchequer Dam MERCED RIVER D69 1 D61 9

Pasternack, Gregory B.

307

Ministrio da Educao Universidade Federal do Paran  

E-print Network

Ministério da Educação Universidade Federal do Paraná Pró-Reitoria de Extensão e Cultura Anexo I. Rosato Unidade de origem (Depto/Setor) MAE/PROEC Área temática do Programa/ Projeto Cultura. Carga etnologia indígena. - Área de Cultura Popular: O bolsista irá desenvolver atividades com o acervo de Cultura

Paraná, Universidade Federal do

308

Studies on the striatal dopamine uptake system of weaver mutant mice and effects of ventral mesencephalic grafts  

Microsoft Academic Search

The dopamine (DA) uptake system was investigated in the mesostriatal system of normal and weaver mutant mice, which lose mesencephalic DA neurons, as well as in weaver mutants with ventral mesencephalic grafts to the striatum. Assays of [3H]DA uptake in striatal synaptosomal fractions in vitro and autoradiography of [3H]mazindol binding in brain sections were carried out in wild-type mice (+\\/+)

L. C. Triarhou; E. H. Stotz; W. C. Low; J. Norton; B. Ghetti; B. Landwehrmeyer; J. M. Palacios; J. R. Simon

1994-01-01

309

Library System Library System  

E-print Network

Library System #12;Library System 5150 Anthony Wayne Drive David Adamany Undergraduate Library that for the current fiscal year, we've been given an additional $600,000 for our library materials budget. We're very subscriptions. The Wayne State University Libraries are deeply committed to providing our faculty and students

Cinabro, David

310

PanDA: A New Paradigm for Distributed Computing in HEP Through the Lens of ATLAS and other Experiments  

E-print Network

Experiments at the Large Hadron Collider (LHC) face unprecedented computing challenges. Heterogeneous resources are distributed worldwide, thousands of physicists analyzing the data need remote access to hundreds of computing sites, the volume of processed data is beyond the exabyte scale, and data processing requires more than a billion hours of computing usage per year. The PanDA (Production and Distributed Analysis) system was developed to meet the scale and complexity of LHC distributed computing for the ATLAS experiment. In the process, the old batch job paradigm of computing in HEP was discarded in favor of a far more flexible and scalable model. The success of PanDA in ATLAS is leading to widespread adoption and testing by other experiments. PanDA is the first exascale workload management system in HEP, already operating at a million computing jobs per day, and processing over an exabyte of data in 2013. We will describe the design and implementation of PanDA, present data on the performance of PanDA a...

De, K; The ATLAS collaboration; Maeno, T; Nilsson, P; Wenaus, T

2014-01-01

311

The first occurrence of the neurotoxin domoic acid (DA) in Humboldt squid (Dosidicus gigas) during a toxic  

E-print Network

ABSTRACT The first occurrence of the neurotoxin domoic acid (DA) in Humboldt squid (Dosidicus gigas in pelagic ecosystems influenced by the California Current System. INTRODUCTION The Humboldt squid Dosidicus gigas is a large nerito- oceanic squid and an important link between lower trophic levels and apex

312

Variability of DA/DAPI and C heterochromatic regions: a population study.  

PubMed

DA/DAPI and C chromosomal heteromorphic sites (1q, 9q, 15p, 16q, Yq) in a sample of 136 unrelated individuals from the Garfagnana valley (Tuscany, Italy) have been analyzed quantitatively and qualitatively. The variations in length, between-homolog heteromorphisms, and intensity of fluorescence of the heterochromatic bands have been compared in two subsamples of the population (upper and middle valley) individualized according to geodemographic criteria. DA/DAPI heterochromatin differed significantly from C heterochromatin, showing a lower average amount and a higher variability at each site. This suggests a differential staining of DNA of the two banding systems. Furthermore, DA/DAPI heterochromatin was less uniformly distributed in the population than C heterochromatin and the regions 16q and Yq discriminated better between subsamples. The variations of DA/DAPI fluorescence at the 15p site demonstrated an excess of homomorphic individuals in the upper valley, which could be related to the mating structure of the population living in this area. PMID:7802857

Tofanelli, S; Stanyon, R; Agostini, M; Franceschi, M G; Paoli, G

1993-08-01

313

A 25-kDa serine peptidase with keratinolytic activity secreted by Coccidioides immitis.  

PubMed

Coccidioides immitis is the causative agent of coccidioidomycosis, a systemic mycosis that attacks humans and a wide variety of animals. In the present study, we showed that the C. immitis mycelial form is able to release proteolytic enzyme into the extracellular environment. Under chemically defined growth conditions, mycelia secreted seven distinct polypeptides ranging from 15 to 65 kDa and an extracellular peptidase of 25 kDa. This enzyme had its activity fully inhibited by phenylmethylsulphonyl fluoride, a serine peptidase inhibitor. Conversely, metallo, cysteine, and aspartyl peptidase inhibitors did not alter the 25-kDa enzyme behavior. This extracellular serine peptidase was able to degrade keratin, a fibrous protein that composes human epidermis. Additionally, this peptidase cleaved different protein substrates, including gelatin, casein, hemoglobin, and albumin. Curiously, an 18-kDa serine peptidase activity was evidenced solely when casein was used as the co-polymerized protein substrate into the gel. The existence of different secreted peptidases could be advantageous for the adaptation of C. immitis to distinct environments during its complex life cycle. PMID:18386157

Lopes, Bárbara Gabriela Brum; Santos, André Luis Souza Dos; Bezerra, Cláudia de Carvalho Falci; Wanke, Bodo; Dos Santos Lazéra, Márcia; Nishikawa, Marília Martins; Mazotto, Ana Maria; Kussumi, Vânia Monteiro; Haido, Rosa Maria Tavares; Vermelho, Alane Beatriz

2008-07-01

314

Qual o Papel da Escola e da Mídia na Obtenção dos Conhecimentos Astronômicos?  

NASA Astrophysics Data System (ADS)

É amplamente reconhecido que as pessoas em geral têm grande fascínio e interesse pela Astronomia. Por outro lado, o conteúdo dessa área incluído no ensino formal está longe de ser abrangente e suficiente para suprir a demanda. Esse interesse permite aperfeiçoar a divulgação e o ensino não formal de Astronomia através da mídia aliando a adequação do conteúdo à expectativa das pessoas. A reforma do Currículo Básico da Escola Pública da maioria dos Estados brasileiros tem introduzido Astronomia desde a pré-escola até o Ensino Médio. Num estudo realizado com 1180 alunos do Ensino Médio de seis escolas estaduais, revelou-se através da aplicação de um formulário contendo questões que abordavam conhecimentos básicos em Astronomia, como foram adquiridos tais conhecimentos e à infra-estrutura da escola. Para 66,1% dos entrevistados o professor já fez alguma apresentação a respeito de Astronomia. O presente estudo revelou também que 54,4% dos alunos entrevistados adquiriram seus conhecimentos astronômicos na escola, 18,4% através da televisão e 27,1% afirmaram que seus conhecimentos foram obtidos através de outros tipos de mídia (internet, livros didáticos, filmes e revistas). Embora o estudo revele claramente que há certo equilíbrio no meio em que os alunos obtiveram seus conhecimentos astronômicos, a mídia busca não somente sua difusão, mas a disponibilização desse conhecimento de maneira correta, que às vezes, não é atingido, apresentando conceitos sem fundamentação e incorretos. Por outro lado, no dia-a-dia escolar, é comum encontrar professores que vêm para as aulas com concepções prévias, que podem diferir substancialmente das idéias a serem ensinadas, dificultando o aprendizado de futuros conceitos científicos. Uma avaliação criteriosa, avaliando as dificuldades dos professores em determinar o sentido correto dos conceitos e observando a metodologia que utilizam no ensino, poderá proporcionar uma melhor compreensão sobre as concepções alternativas, presentes no ensino de Astronomia.

da Cunha, W. S.; Voelzke, M. R.; Amaral, L. H.

2007-08-01

315

Estabilidade da aptidão física na transição da infância (7-9 anos) para a puberdade (15 anos): o Estudo Morfofuncional da Criança Vianense  

Microsoft Academic Search

Tracking physical fitness from childhood (7-to-9 years old) to late puberty (15 years-old): the Estudo Morfofuncional da Criança Vianense. Our main goal in this study was to understand the stability and track- ing of physical fitness from childhood to late puberty. One hundred sev- enty four Portuguese boys and girls, participants on the Estudo Morfofuncional da Criança Vianense, were annually

Luis Paulo Rodrigues; Sérgio Angélico; Linda Saraiva

316

Solar system positioning system  

NASA Technical Reports Server (NTRS)

Power-rich spacecraft envisioned in Prometheus initiative open up possibilities for long-range high-rate communication. A constellation of spacecraft on orbits several A.U. from the Sun, equipped with laser transponders and precise clocks can be configured to measure their mutual distances to within few cm. High on-board power can create substantial non-inertial contribution to the spacecraft trajectory. We propose to alleviate this contribution by employing secondary ranging to a passive daughter spacecraft. Such constellation can form the basis of it navigation system capable of providing position information anywhere in the soIar system with similar accuracy. Apart from obvious Solar System exploration implications, this system can provide robust reference for GPS and its successors.

Penanen, Konstantin I.; Chui, Talso

2006-01-01

317

SYSTEMS BIOM BIOMEDICAL SYSTEMS,  

E-print Network

exercise studies under normal and diseased conditions. Cellular metabolic changes are quantitatively of heart disease. Therapeutic strategies are developed related to biomechanical, vascular, muscular control systems, human locomotion, and exercise to reduce loss of musculoskeletal function

Rollins, Andrew M.

318

Structural health monitoring of the church of Santa Casa da Misericordia of Aveiro using FBG sensors  

NASA Astrophysics Data System (ADS)

This paper presents a structural health monitoring system, based on fibre Bragg gratings, developed for the church of Santa Casa da Misericordia of Aveiro. This system comprises 19 displacement sensors and 5 temperature sensors. All the sensors were custom made according to the monitoring points' characteristics. The results obtained over the first months are presented. The objective of this work is to gather data that will bring a deeper knowledge of how this structure behaves and to help planning the recovering interventions in this historical building.

Lima, H. F.; Vicente, R.; Nogueira, R. N.; Abe, I.; André, P.; Fernandes, C.; Rodrigues, H.; Varum, H.; Kalinowski, H. J.; Costa, A.; Pinto, J. L.

2007-07-01

319

Waveform generator for electrical impedance tomography (EIT) using linear interpolation with multiplying D/A converters.  

PubMed

This paper describes the implementation of a multiplying digital-to-analogue (D/A) converter as a programmable waveform generator to be used in an electrical impedance tomography (EIT) system. Different digital techniques of generation waveforms are considered and the advantages and disadvantages of the chosen slope-plus-pedestal technique are presented. A wire-wrapped prototype system has been designed, and from measured frequency spectra the total harmonic distortion can be calculated to values between 1.1 and 2.9% depending on frequency. PMID:7776358

Blad, B; Johannesson, J; Johnsson, G; Bachman, B; Lindström, K

1994-01-01

320

The Mind of Leonardo: The Universal Genius at Work  

NSDL National Science Digital Library

The phrase âÂÂrenaissance manâ is bandied about a great deal these days, and by this point in history, few may remember what the phrase actually means. Leonardo da Vinci was just such a man, and his genius and his depth of mind are explored in this lovely exhibit offered by the Institute and Museum of the History of Science. Here, visitors can view some of his famous drawings, including those he did in the years before departing for Milan in 1482 and his artistic renderings of the nature of motion. Throughout the exhibit, visitors can read succinct and lucid descriptions of these works and the principles they are meant to illustrate. One particularly engrossing section is dedicated to the sciences of painting. It should not be missed, nor should the rest of this glorious exploration of but a few small morsels of da VinciâÂÂs works. Accordingly, the site is also available in Italian.

2006-01-01

321

Variabilidade da frequência cardíaca, estresse, ansiedade e depressão em intensivistas : um estudo nas unidades de terapia intensiva da cidade de Dourados, MS.  

E-print Network

??Dissertação (mestrado)—Universidade de Brasília, Faculdade de Ciências da Saúde, 2009. Fundamento: Ansiedade, depressão e estresse têm sido associados à baixa variabilidade da freqüência cardíaca (VFC)… (more)

Longhi, Allan

2009-01-01

322

Systems autonomy  

NASA Technical Reports Server (NTRS)

Information on systems autonomy is given in viewgraph form. Information is given on space systems integration, intelligent autonomous systems, automated systems for in-flight mission operations, the Systems Autonomy Demonstration Project on the Space Station Thermal Control System, the architecture of an autonomous intelligent system, artificial intelligence research issues, machine learning, and real-time image processing.

Lum, Henry, Jr.

1988-01-01

323

DA495 - an aging pulsar wind nebula  

Microsoft Academic Search

We present a radio continuum study of the pulsar wind nebula (PWN) DA 495\\u000a(G65.7+1.2), including images of total intensity and linear polarization from\\u000a408 to 10550 MHz based on the Canadian Galactic Plane Survey and observations\\u000awith the Effelsberg 100-m Radio Telescope. Removal of flux density\\u000acontributions from a superimposed \\\\ion{H}{2} region and from compact\\u000aextragalactic sources reveals a

R. Kothes; T. L. Landecker; W. Reich; S. Safi-Harb; Z. Arzoumanian

2008-01-01

324

MINISTRIO DA EDUCAO UNIVERSIDADE FEDERAL DO PARAN  

E-print Network

verticais com laminas de 9 cm de largura em PVC liso curve, trilho perfil sólido de alumínio anodizado fosco.820.375/0001-59 4490.52.51 3 Persianas verticais, com laminas de 9 cm de largura em PVC liso, na cor manteiga, com rosário em PVC. Todas devem ter reforço de 3 cm na parte da furação das lâminas. Com visita no local 500m2

Paraná, Universidade Federal do

325

The Solutions Data Base Component of the Water Pollution Abatement Subsystem (WPAS) of the Pollution Abatement Management System. (PAMS).  

National Technical Information Service (NTIS)

This report describes the overall concept definition for the Solutions Data Base component of the Water Pollution Abatement System (WPAS) of the Pollution Abatement Management System (PAMS), which is being developed for use by DA planners and Facility Eng...

J. T. Bandy, E. D. Smith, R. D. Webster

1981-01-01

326

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

327

ECONOMIA DO MEIO AMBIENTE:ASPECTOS TEÓRICOS DA ECONOMIA AMBIENTAL E DA ECONOMIA ECOLÓGICA  

Microsoft Academic Search

Os efeitos gerados pela manutenção do atual padrão de consumo sustentado pelo homem tornam cada vez mais evidente a inviabilidade do mesmo. A pressão exercida sobre os recursos naturais enquanto fatores de produção e sumidouros depositários de resíduos oriundos da utilização desses, faz com que as questões referentes a possíveis limites à sua utilização sejam discutidas. A teoria econômica vem

Roberta Fernanda Da Paz De Souza

2008-01-01

328

UNIVERSIDADE FEDERAL DO PARAN -SETOR DE CINCIAS DA SADE SIBI -BIBLIOTECA DE CINCIAS DA SADE -SD  

E-print Network

- SD PRODU��O CIENTÍFICA DO SETOR DE CI�NCIAS DA SA�DE CURSO DE MEDICINA DEPARTAMENTO DE MEDICINA entre técnicas. Revista Panamericana de Salud Pública/ Pan American Journal of Public Health, v.29, p

Paraná, Universidade Federal do

329

AVALIAÇÃO DA VIABILIDADE DE REUTILIZAÇÃO DA ÁGUA DE REFRIGERAÇÃO DOS DESTILADORES PARA LAVAGEM DE PIPETAS  

Microsoft Academic Search

RESUMO --- Em todo setor existe a necessidade de uso racional da água, em vista do grande número de atividades que utilizam água potável para fins que podem e devem utilizar água reaproveitada dentro dos padrões de potabilidade. Dentro deste contexto este trabalho analisou as dependências internas do Departamento de Engenharia Sanitária (UFMT), onde existem laboratórios que colaboram com os

Gabriela Cavalcante; Silva Marsaro; Cláudia Pereira Guimarães

330

A NATUREZA DA CIÊNCIA E A INSTRUMENTAÇÃO PARA O ENSINO DA FÍSICA  

Microsoft Academic Search

Resumo: O propósito deste artigo é o de examinar as convicções filosóficas que dão suporte aos compor- tamentos de alguns professores de física ao lidarem com o ensino da Física no contexto de um laborató- rio. Entrevistas foram feitas com professores de \\

Alexandre Medeiros; Severino Bezerra Filho

2000-01-01

331

UNIVERSIDADE FEDERAL DO PARAN -SETOR DE CINCIAS DA SADE SIBI -BIBLIOTECA DE CINCIAS DA SADE -SD  

E-print Network

de livros e livros. Antonio Carlos Ligocki Campos et al. Influence of bariatric surgery on circadian-280, 2008. 2008 Medline Artigo #12;Antonio Carlos Ligocki Campos et al The impact of bariatric surgery Plastic Surgery, v.33, p.84-89, 2009. 2009 Medline Artigo Antonio Carlos Ligocki Campos et al Efeito da

Paraná, Universidade Federal do

332

Estudo da proteção à corrosão pelo uso de polímeros condutores.  

E-print Network

??As propriedades protetoras à corrosão dos polímeros condutores, especialmente da poli(anilina) (PANI), têm sido amplamente explorada. Entretanto, o mecanismo pelo qual esta proteção é efetuada… (more)

Gisela Ferraz Almada

2008-01-01

333

Insisting on Persistent Mobile Agent Systems M. Mira da Silva1 and A. Rodrigues da Silva2  

E-print Network

badly) they support the proposed list of facilities. 1 Introduction There are now several research, including hand-held PCs, TV sets and maybe even on mobile phones. Persistence is fundamental for the next

da Silva, Alberto Rodrigues

334

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. PMID:22172215

Kumar, Rajesh; Jog, Amod; Vagvolgyi, Balazs; Nguyen, Hiep; Hager, Gregory; Chen, Chi Chiung Grace; Yuh, David

2011-01-01

335

DAEdALUS and Dark Matter  

E-print Network

Among laboratory probes of dark matter, fixed-target neutrino experiments are particularly well-suited to search for light weakly-coupled dark sectors. In this paper, we show that the DAEdALUS source setup---an 800 MeV proton beam impinging on a target of graphite and copper---can improve the present LSND bound on dark photon models by an order of magnitude over much of the accessible parameter space for light dark matter when paired with a suitable neutrino detector such as LENA. Interestingly, both DAEdALUS and LSND are sensitive to dark matter produced from off-shell dark photons. We show for the first time that LSND can be competitive with searches for visible dark photon decays, and that fixed-target experiments have sensitivity to a much larger range of heavy dark photon masses than previously thought. We review the mechanism for dark matter production and detection through a dark photon mediator, discuss the beam-off and beam-on backgrounds, and present the sensitivity in dark photon kinetic mixing for...

Kahn, Yonatan; Thaler, Jesse; Toups, Matthew

2014-01-01

336

History and People  

NSDL National Science Digital Library

With three levels to choose from on each page - beginner, intermediate or advanced - this site provides links to webpages about the many great scientists who have made significant leaps in science. The list starts from philosophers and scientists from ancient times like Plato and Socrates, to Leonardo Da Vinci and Isaac Newton, and the modern scientists of today. The way science record or keep their data, is explained in the separate page that focuses on the scientific process.

2008-04-08

337

Color, the Visual Arts, and Representations of Otherness in the Victorian Novel  

E-print Network

by Leonardo da Vinci, Raphael, and Michelangelo. Its rival, colore, consisted of ?the chromatic embellishment of the picture and the tonal arrangement of a composition? (138). Color and its possibilities 16 were promoted by Titian, Paolo Veronese... decade? of the 1890s (Finlay 392). Perkin?s invention, for which he received a knighthood, sparked a revolution and was followed by a rapid series of aniline dyes and pigments as rival companies competed to invent the next ?it? color. The resulting...

Durgan, Jessica

2012-07-16

338

Virtual Power Electronics: Novel Software Tools for Design, Modeling and Education  

Microsoft Academic Search

The current paper is dedicated to present browser-based multimedia-rich software tools and e-learning curriculum to support the design and modeling process of power electronics circuits and to explain sometimes rather sophisticated phenomena. Two projects will be discussed. The so-called Inetele project is financed by the Leonardo da Vinci program of the European Union(EU). It is a collaborative project between numerous

Janos Hamar; Istvan Nagy; Hirohito Funato; Satoshi Ogasawara; Octavian Dranga; Yasuyuki Nishida

2007-01-01

339

Determination of nitrification kinetics by the ANITA-DOstat biosensor  

Microsoft Academic Search

Politecnico di Milano, DIIAR, Piazza L. da Vinci 32, 20133 Milano, Italy (E-mail: rozzi@amb1.amb.polimi.it) Abstract The ANITA biosensor, which measures ammonium oxidation rate by alkaline titration at constant pH, has been recently coupled to open respirometry making it possible to evaluate NH4 + oxidation kinetics by two different and completely independent techniques. This paper describes the use of a new

E. Ficara; A. Rocco; A. Rozzi

2000-01-01

340

Crnica I Encontro Solar na UDC O pasado mrcores 24 de abril tivo lugar na Praza da Fraga (Campus da  

E-print Network

/informativos/os-universitarios-da-coruna-comparten-unha-xornada-de- gastronomia-solar-573783 http://www.lavozdegalicia.es/noticia/coruna/2013/04/24/cocina-universitaria-energiaCr�nica I Encontro Solar na UDC O pasado m�rcores 24 de abril tivo lugar na Praza da Fraga (Campus da Zapateira) a primeira edici�n do Encontro Solar na UDC. Esta era a terceira das actividades

Fraguela, Basilio B.

341

Systems Analysis Systems Integration  

E-print Network

to H2 not straightforward Exploratory research is essential Extensive R&D needed Issues: Economic any previously undertaken by DOE in civilian energy Systems Analysis essential guidance / perspective include coal liquids, shale oil & biomass. #12;7 OPTIONS FOR FUTURE U.S. ENERGY - MY VIEW Coal

342

The technique of robotic assisted laparoscopic surgery in gynaecology, its introduction into the clinical routine of a gynaecological department and the analysis of the perioperative courses - a German experience  

PubMed Central

Objective Robotic assisted surgery is an advancement on conventional laparoscopy. The first and single FDA-approved device is the da-Vinci™ system, which provides means to overcome the limitations of conventional laparoscopy. In Germany the use of the robotic system in gynaecology is at the threshold of a promising development. There is a wide spectrum of indications, such as simple and radical hysterectomies, including pelvic and paraaortic lymph node dissection. The introduction of the robotic system into the clinical routine is demonstrated. Material and Methods Robotic assisted laparoscopic interventions have been performed in the reporting hospital since April 2008. In the course of treatment of 172 cases, an increasing rise of complexity of surgical procedure has been achieved. The daVinci™ system is well adaptable in clinical routine. Hitherto, the clinical outcome has been favourable, higher-grade specific complications occurred very rarely. The short time advantages are a decrease of postoperative length of stay, a reduction of postinterventional need of analgetics and an overall accelerated period of recovery has been demonstrated compared to conventional abdominal procedures. It also shows that a drastic decrease of open conventional abdominal procedures concerning uterine pathologies appeared in the reporting department. Results Perioperative advantages of robotic assisted laparoscopic interventions are, above all, the decrease of morbidity (concerning blood loss, need of analgetics, length of stay, etc.). Surgical advantages are the more complex applicability, improved precision, dexterity and vision (3D), a greater autonomy of the surgeon, a smaller learning curve and an increase of preparation consistent with the anatomical structures. In contrast, disadvantages concern an initial greater time investment, the potentially different management of complications, the limited applicability in multiquadrant surgery and the difficulty regarding cost coverage respective to recovery. Conclusions In conclusion, robotic assisted minimal invasive surgery has an enormous potential in gynaecology; by simplifying the essential surgical procedure. The advantages of this technique will be approachability for a majority of gynaecological patients. The feasibility of a multitude of gynaecological surgical interventions has already been approved partially in a small number of cases. The upcoming challenge now is to verify the short and long term advantages of robotic surgery in prospective trials, especially concerning gynaecological oncology. PMID:24591970

Ertan, A. Kubilay; Ulbricht, Michael; Huebner, Kirsten; Di Liberto, Alexander

2011-01-01

343

The dopaminergic system in peripheral blood lymphocytes: from physiology to pharmacology and potential applications to neuropsychiatric disorders.  

PubMed

Besides its action on the nervous system, dopamine (DA) plays a role on neural-immune interactions. Here we review the current evidence on the dopaminergic system in human peripheral blood lymphocytes (PBL). PBL synthesize DA through the tyrosine-hydroxylase/DOPA-decarboxylase pathway, and express DA receptors and DA transporter (DAT) on their plasma membrane. Stimulation of DA receptors on PBL membrane contributes to modulate the development and initiation of immune responses under physiological conditions and in immune system pathologies such as autoimmunity or immunodeficiency.The characterization of DA system in PBL gave rise to a further line of research investigating the feasibility of PBL as a cellular model for studying DA derangement in neuropsychiatric disorders. Several reports showed changes of the expression of DAT and/or DA receptors in PBL from patients suffering from several neuropsychiatric disorders, in particular parkinsonian syndromes, schizophrenia and drug- or alcohol-abuse. Despite some methodological and theoretical limitations, these findings suggest that PBL may prove a cellular tool with which to identify the derangement of DA transmission in neuropsychiatric diseases, as well as to monitor the effects of pharmacological treatments. PMID:22131937

Buttarelli, Francesca R; Fanciulli, Alessandra; Pellicano, Clelia; Pontieri, Francesco E

2011-06-01

344

Differential expression of autoreceptors in the ascending dopamine systems of the human brain.  

PubMed Central

The tone and regulation of the brain dopaminergic projections are, in part, determined by the presence or absence of dopamine (DA) autoreceptors: rate of DA synthesis and turnover, as well as both pattern and rate of neuronal firing, are modulated by the expression and activity of these autoreceptors. The expression of dopaminergic receptors in the midbrain DA cell groups, presumably reflecting DA autoreceptors, was determined in the brains of the rat, Old World monkey, and human. In the rat, both the substantia nigra (A9) and the ventral tegmental area (A10) appear to express DA autoreceptors. In the monkey and human, however, only the projections arising from the substantia nigra express these receptors; the limbic projections originating in the ventral tegmental area lack this substrate for DA autoregulation. These results indicate that in the human, the nigrostriatal and mesocorticolimbic dopamine systems may be differentially autoregulated. Images PMID:7914704

Meador-Woodruff, J H; Damask, S P; Watson, S J

1994-01-01

345

DESENVOLVIMENTO PROFISSIONAL DA DOCÊNCIA UNIVERSITÁRIA EM OUTROS CONTEXTOS  

Microsoft Academic Search

Resumo: O intuito desta exposição é apresentar, com base na análise da experiência da RED- U - Red Estatal de Docencia Universitaria constituída por universidades espanholas, uma reflexão em torno do desenvolvimento profissional do docente universitário no atual contexto de globalização. A referida rede representa um espaço para a difusão e o intercâmbio de políticas, experiências, metodologias e ferramentas utilizadas

Solange Maria Longhi

346

Asteroid 2012 DA14 To Whiz Past Earth Safely  

NASA Video Gallery

The small near-Earth asteroid 2012 DA14 will pass very close to Earth on Feb. 15, 2013. Asteroid 2012 DA14 will be closest to Earth at about 11:24 a.m. PST (2:24 p.m. EST and 1924 UTC), on Feb. 15,...

347

Divulgamos a lista de associados pais/mes/responsveis, em virtude do processo eleitoral para escolha da nova diretoria da APP que ser aberto em breve. Qualquer  

E-print Network

. ALDANEI NORMA DE SOUZA 11. ALDO NELSON DELGADO 12. ALECSANDRA SOARES PADILHA 13. ALESSANDRA GUTIERREZ GOMES DA CRUZ 14. ALESSANDRA IGLESIAS FERREIRA 15. ALEXANDRE BONTEIN DA ROSA 16. ALEXSANDRO BARRETO ALMEIDA 17. ALICE ROSA DA SILVA 18. ALINE DA SILVEIRA 19. ALINE MENDES SERAFIM 20. ALVARO LUIS ZANCO 21

Floeter, Sergio Ricardo

348

Whitepaper on the DAEdALUS Program  

E-print Network

This whitepaper describes the status of the DAEdALUS program for development of high power cyclotrons as of the time of the final meeting of the Division of Particles and Fields 2013 Community Study ("Snowmass"). We report several new results, including a measurement capability between 4 and 12 degrees on the CP violating parameter in the neutrino sector. Past results, including the capability of the IsoDAR high Dm^2 antielectron neutrino disappearance search, are reviewed. A discussion of the R&D successes, including construction of a beamline teststand, and future plans are provided. This text incorporates short whitepapers written for subgroups in the Intensity Frontier and Frontier Capabilities Working Groups that are available on the Snowmass website.

Aberle, C; Alonso, J; Barletta, W A; Barlow, R; Bartoszek, L; Bungau, A; Calanna, A; Campo, D; Calabretta, L; Celona, L; Collin, G; Conrad, J M; de Gouvea, A; Djurcic, Z; Gammino, S; Garisto, D; Gutierrez, R; Johnson, R R; Kamyshkov, Y; Karagiorgi, G; Kolano, A; Labrecque, F; Loinaz, W; Okuno, H; Papavassiliou, V; Scholberg, K; Shaevitz, M H; Shimizu, I; Spitz, J; Skuhersky, M; Terao, K; Toups, M; Vagins, M; Winklehner, D; Winslow, L A; Yang, J J

2013-01-01

349

Programao da 3 Semana da Cultura Afro-Brasileira 25/11 (segunda-feira)  

E-print Network

Apresentação de Capoeira angola (Capoeira Angola é o estilo de capoeira mais próximo de como os negros escravos jogavam a capoeira. Caracterizada por ser mais lenta, porém rápida, movimentos furtivos executados perto do solo, como em cima, ela enfatiza as tradições da capoeira, que em sua raiz está ligada aos rituais

Souza, Max O.

350

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

351

PROGRAMA COMPUTACIONAL PARA ESTIMATIVA DA EROSIVIDADE DA CHUVA NO ESTADO DE SÃO PAULO UTILIZANDO REDES NEURAIS ARTIFICIAIS  

Microsoft Academic Search

RESUMO A estimativa do fator erosividade da chuva (R) da Equação Universal de Perda de Solo é importante para o planejamento conservacionista de uso e manejo do solo. Uma rede neural artificial (RNA) foi desenvolvida pelo Grupo de Pesquisas em Recursos Hídricos, a fim de estimar o valor de R para qualquer localidade do Estado de São Paulo. Contudo, para

Michel Castro Moreira; Roberto Avelino Cecílio; Francisco Lombardi Neto; Fernando Falco Pruski

352

Development of the VBLaST(TM): A Virtual Basic Laparoscopic Skill Trainer  

PubMed Central

Background Minimally invasive surgery has become more and more important in modern hospitals. In this context, increasingly more surgeons need to be trained to master the necessary laparoscopic surgical skills. The Fundamentals of Laparoscopic Surgery (FLS) training tool box has now been adopted by the Society of Gastrointestinal Endoscopic Surgeons (SAGES) as an official training tool. While useful, there are major drawbacks of such physical tool boxes including the need to constantly replace training materials, inability to perform objective quantification of skill and the inability to easily adapt to training surgeons on surgical robots such as the da Vinci® which provides high resolution stereo visualization. Methods To overcome the limitations of the FLS training tool box, we have developed a Virtual Basic Laparoscopic Skill Trainer (VBLaST™) system, which will allow trainees to acquire basic laparoscopic skill training through the bimanual performance of four tasks including peg transfer, pattern cutting, ligating loop and suturing. A high update rate of about 1 kHz is necessary to ensure continuous haptic interactions and smooth transitions. Results The outcome of this work is the development of an integrated visio-haptic workstation environment including two Phantom® Omni™ force feedback devices and a 3D display interface from Planar Systems, Inc whereby trainees can practice on virtual versions of the FLS tasks in 2D as well as in 3D, thereby allowing them to practice both for traditional laparoscopic surgery as well as that using the da Vinci® system. Realistic graphical rendering and high fidelity haptic interactions are achieved through several innovations in modeling complex interactions of tissues and deformable objects. Conclusions Surgical skill training is a long and tedious process of acquiring fine motor skills. Even when complex and realistic surgical trainers with realistic organ geometries and tissue properties, which are currently being developed by academic researchers as well as the industry, mature to the stage of being routinely used in surgical training, basic skill trainers such as VBLaST™ will not lose their relevance. It is expected that residents would start on trainers such as VBLaST™ and after reaching a certain level of competence would progress to the more complex trainers for training on specific surgical procedures. In this regard, the development of the VBLaST™ is highly significant and timely. PMID:18348181

Maciel, Anderson; Liu, Youquan; Ahn, Woojin; Singh, T. Paul; Dunnican, Ward; De, Suvranu

2009-01-01

353

Operating Systems.  

ERIC Educational Resources Information Center

A computer operating system spans multiple layers of complexity, from commands entered at a keyboard to the details of electronic switching. In addition, the system is organized as a hierarchy of abstractions. Various parts of such a system and system dynamics (using the Unix operating system as an example) are described. (JN)

Denning, Peter J.; Brown, Robert L.

1984-01-01

354

Proposta Metodologica Para Avaliacao DA Qualidade de Vida Urbana a Partir de Dados Convencionais E de Sensoriamento Remoto, Sistema de Informacoes Geograficas E Banco de Dados Georrelacional (Proposal of a Methodology to Evaluate Urban Quality of Life Using Conventional and Remote Sensing Data, Geographic Information System, and a Database).  

National Technical Information Service (NTIS)

A methodology of urban quality of life evaluation using conventional and remote sensing data (aerial photographs in the scale of 1:10,000, orbital images SPOT-panchromatic in paper-1:25,000 and digital TM-LANDSAT), a Geographic Information System (GIS) an...

V. A. Ceccato

1994-01-01

355

Produção de entropia devido a flutuações da métrica em um sistema de N partículas.  

E-print Network

??A teoria quântica aplicada a sistemas microscópicos prevê comportamento oscilatório para objetos macroscópicos. Também, o caráter determinístico da física microscópica contradiz a irreversibilidade da termodinâmica.… (more)

Artur de Souza Lima Malabarba

2012-01-01

356

Comprehensive program for development of DA/DSM technology at Vattenfall, Sweden`s largest distribution company group  

SciTech Connect

The Swedish government has proposed a bill for deregulation of the Swedish distribution market which will facilitate for the customers to choose to purchase electricity from the producer or supplier offering the best terms. It is anticipated the opening-up of the market for distribution will proceed in several distinct steps commencing in 1994/95. Vattenfall (formerly the Swedish State Power Board) is the major distribution company group in Sweden with 650,000 customers at 20 distribution subsidiaries all over the country. Vattenfall and its distribution companies have recognized the commercial impact of utilizing DA/DSM technology on a deregulated market where competition between distributors will become reality. In this context Vattenfall has recently commenced a development program for demonstrating the possibilities of the technology for increasing competitiveness. The objectives of the DA/DSM development program are to: (1) demonstrate increased efficiency and competitiveness by utilizing modem information technology; (2) deploy extensive knowledge of the possibilities of DA/DSM technology at all of Vattenfall`s distribution subsidiaries; and (3) facilitate successive introduction of mature information technology at Vattenfall`s distribution companies. The program is dealing with a variety of technical and administrative topics such as two way communication with customers, development of new services to customers, fault diagnostics, development of flexible customer information and billing systems, development of Geographical Information Systems (GIS), Customer Information Systems (CIS) and engineering systems, etc.

Melin, S.; Ingvarsson, T.

1994-12-31

357

Simulation of wind driven ventilative cooling systems for an apartment building in Beijing and Shanghai  

E-print Network

and Shanghai G. Carrilho da Graça, Q. Chen* , L.R. Glicksman, L.K. Norford Building Technology Program., Glicksman, L.R. and Norford, L.K. 2002. "Simulation of wind driven ventilative cooling systems

Chen, Qingyan "Yan"

358

Montaser M. Da'ana Philadelphia University  

E-print Network

. Networks: Design For LAN and WAN map Network by used Visio 2002-2003 & Cisco Simulation system NetworksCountry : Network & Systems AdministratorJob : Montaser_71@hotmail.comE-Mail : Training courses: Novell network Training Course Monitoring and Troubleshooting Microsoft Exchange Server 2007 Training Course Cyber

359

Mechanical Systems  

NASA Technical Reports Server (NTRS)

The presentation provides an overview of requirement and interpretation letters, mechanical systems safety interpretation letter, design and verification provisions, and mechanical systems verification plan.

Davis, Robert E.

2002-01-01

360

[Severe acute asthma: isoflurane administration via AnaConDa™, is it safe?].  

PubMed

Standard treatments against severe acute asthma can be insufficient and need salvation treatments, such as isoflurane delivery. These treatments have not been much assessed and could lead to unrecognized side-effects. We report the case of a young man who suffered from intracranial hypertension associated with severe hypercapnia during the delivery of isoflurane via the system AnaConDa™ or Anaesthetic Conserving Device™ (ACD) (Sedama Medical). The rising of PaCO(2) appears to be linked to an ACD-dependent increase in the dead space. PMID:21146349

Chaillan, M; Badin, J; Kerforne, T; Voultoury, J; Pinsard, M

2011-01-01

361

Effect of a Disposable Automated Suturing Device on Cost and Operating Room Time in Benign Total Laparoscopic Hysterectomy Procedures  

PubMed Central

Background and Objectives: To determine the effect of a disposable automated laparoscopic suturing device, the Endo Stitch (ES) (Covidien, Mansfield, MA, USA), on hospital cost and surgical time in patients undergoing a benign total laparoscopic hysterectomy procedure compared with the use of the da Vinci surgical system (Intuitive Surgical, Sunnyvale, CA, USA) or traditional laparoscopic suturing technique. Methods: The Premier Perspective Database (Premier, Charlotte, NC, USA) was used to identify all inpatient hospital discharges with the primary procedure of a total laparoscopic hysterectomy (International Classification of Diseases, Ninth Revision, Clinical Modification code 68.41) for benign conditions between January 1, 2009, and June 30, 2011. Patients were further categorized into 3 groups: (1) those for whom the ES was used during the laparoscopic hysterectomy procedure, (2) those for whom robotic assistance (RA) was used, and (3) those for whom neither ES nor RA (NER) was used. Multivariate analysis was performed to examine the association among the ES, RA, and NER groups with respect to hospital cost, length of stay, and surgery time. The multivariate analysis controlled for the patient's age, race, severity of illness, and comorbid conditions, as well as hospital characteristics, such as bed size, region, and teaching status. Results: A total of 9308 patients undergoing an inpatient total laparoscopic hysterectomy procedure between January 1, 2009, and June 30, 2011, were eligible for the study. The ES was used in 974 of the patients (10%), RA was used in 3971 (43%), and neither technique was used in 4363 (47%). After adjusting for confounding variables, the mean hospital cost was $1769 (P = .0332) lower, with a 42-minute (P < .001) surgery time savings, for the ES group compared with the RA group. The mean hospitalization cost for the ES group was also $634 (P < .0879) less expensive, with a 21-minute (P = .0131) surgery time savings, compared with the NER group. Conclusion: Use of a disposable automated laparoscopic suturing device, the ES, is significantly more cost-effective than the use of the da Vinci surgical system or traditional laparoscopic suturing techniques for the performance of a total laparoscopic hysterectomy procedure for benign conditions. PMID:24398190

Hashemi, Lobat; Sobolewski, Craig J.

2013-01-01

362

Crystal forms of a capsaicin derivative analgesic DA5018  

Microsoft Academic Search

DA-5018 is a new capsaicin derivative and has analgesic effect. The objective of this work was to investigate the existence\\u000a of polymorphs and pseudopolymorphs of DA-5018 and the transformation of crystal forms. Eight crystal forms of DA-5018 have\\u000a been isolated by recrystallization and characterized by powder X-ray diffractometry (PXRD), differential scanning calorimetry\\u000a (DSC), and thermogravimetric analysis (TG).\\u000a \\u000a The PXRD and

E.-A. Lee; Y.-T. Sohn

2008-01-01

363

Operating Systems  

NSDL National Science Digital Library

CSC 342. Operating Systems (3) Prerequisite: CSC 332. Study of supervisory programs. System services and file systems; CPU scheduling; memory management; virtual memory; disk scheduling. Deadlock characterization, prevention, and avoidance; concurrent processes; semaphores; critical sections; synchronization. Distributed systems and communication protocols.

Ferner, Clayton

2003-04-21

364

Mozambique: Education Sector Assessment (Avaliacao da Educacao).  

National Technical Information Service (NTIS)

The war in Mozambique and the country's overall lack of resources have had devastating effects on the country's education system. The schools suffer from poor physical infrastructure, low instructional quality, low quality of textbooks and instructional m...

K. P. Dzvimbo, D. N. Plank, C. A. Torres, R. E. Verhine

1992-01-01

365

Maria Adelaide Amaral ou a Crise da Classe Média Brasileira  

E-print Network

— guerrilha, ditadura — é introduzida pela personagem Paulo, evocada nas lembranças de Sergio e Luísa. Esta personagem é vista como uma espécie de património da classe média alta, uma reserva de heroicidade, de aventura, de encanto. Mas, finalmente, é...

Ravetti, Graciela; Rojo, Sara

1996-10-01

366

MIGRATION FROM OPC-DA TO OPC-UA  

E-print Network

The OPC-DA specification of OPC has been a highly successful interoperability standard for process automation since 1996, allowing communications between any compliant components regardless of vendor. CERN has a reliance on OPC-DA Server implementations from various 3rd party vendors which provide a standard interface to their hardware. The OPC foundation finalized the OPC-UA specification and OPC-UA implementations are now starting to gather momentum. This paper gives a brief overview of the headline features of OPC-UA and a comparison with OPC-DA and outlines the necessity of migrating from OPC-DA and the motivaion for migraing to OPC-UA. Feedback from research into the avaiblability of tools and testing utilities will be presented and a practical overview of what will be required from a computing perspecive in order to run OPC-UA clients and servers in the CERN network.

Farnham, B

2011-01-01

367

XXIV Congresso Brasileiro de Biblioteconomia, Documentao e Cincia da Informao  

E-print Network

Londrina Eliane M. S. Jovanovich emsjovanovich@uel.br Universidade Estadual de Londrina RESUMO Muito se-se verificar o que o Sistema de Bibliotecas da Universidade Estadual de Londrina - SB/UEL está fazendo para

Paraná, Universidade Federal do

368

Diagnóstico ambiental no contexto da paisagem de fragmentos florestais naturais \\  

Microsoft Academic Search

RESUMO - Este estudo foi conduzido em uma área localizada no município de Lagoa da Confusão, Estado do Tocantins, com os objetivos de diagnosticar fragmentos florestais naturais, denominados regionalmente de \\

Iracy Coelho de Menezes Martins; Vicente Paulo Soares; Elias Silva; Ricardo Seixas Brites

2002-01-01

369

Data: 18/06/2013 Local: Auditrio da FL  

E-print Network

Data: 18/06/2013 Local: Auditório da FL Auditório G1 da Faculdade de Letras. Av.Horácio Macedo'acri / CFCH) Portal Capes: menus, meu espaço, tutoriais (Instrutores Heloí- sa Costa / IQ e Marcos D'acri / CFCH) Portal Capes: busca, assuntos, periódicos, livros e bases de dados (Instrutores Cassia Costa

Liu, I-Shih

370

Novas determinações dos parâmetros atmosféricos das estrelas anãs brancas DA  

NASA Astrophysics Data System (ADS)

Nós temos selecionado uma amostra de estrelas anãs brancas DA (atmosfera de hidrogênio) a partir dos índices de Strömgren cujos valores estão próximos a região de instabilidade das estrelas anãs brancas DA variáveis, as chamadas estrelas DAV ou ZZ Ceti. O objetivo é determinar os parâmetros fundamentais (temperatura efetiva, Teff, aceleração da gravidade, log g, e massa) destas estrelas para verificar quais os parâmetros estelares estão envolvidos com o mecanismo de pulsação das estrelas DAV. Nós obtemos, até agora, mais de 120 espectros óticos de estrelas DA. Entre as estrelas selecionadas há 20 estrelas variáveis (DAV). Assim, podemos verificar se existem ou não estrelas não variáveis dentro da faixa de instabilidade das estrelas ZZ Ceti. Neste trabalho nós apresentamos a determinação dos parâmetros atmosféricos (temperatura efetiva, Teff, e aceleração da gravidade, log g) das estrelas anãs brancas DA usando os novos modelos de atmosfera ML2/a = 0.6. Estes modelos têm sido utilizados recentemente por fornecerem uma excelente consistência interna na determinação das temperaturas nas regiões do ultra-violeta e ótico. Os parâmetros atmosféricos são determinados espectroscopicamente através da comparação do fluxo de energia das linhas de Balmer (Hb à H9) entre os espectros observados e sintéticos (gerados pelos modelos de atmosfera). As temperaturas obtidas com os novos modelos são, em geral, menores (~ 1000 K menos) que as temperaturas determinadas anteriormente, com modelos ML1. Os valores de log g não mudaram significativamente (menos de 10%). A faixa de instabilidade das DAVs está entre 11000 e 13000 K, consistente com dados de outros autores.

Giovannini, O.; Costa, A. F. M.; Kepler, S. O.

2003-08-01

371

SEMINRIO INTERNACIONAL: HISTRIA SOCIAL DA CULTURA MESTRADO 25 ANOS  

E-print Network

SEMINÁRIO INTERNACIONAL: HIST�RIA SOCIAL DA CULTURA ­ MESTRADO 25 ANOS Data: 8, 9 e 10 de outubro (UNIVERSO) 16:30h às 18:30h ­ Mesa 2: História e Cultura na contemporaneidade / O conceito de cultura hoje. Bernardo Medeiros Ferreira da Silva (UERJ) 16:30h às 18:30h - Mesa 4: História e Cultura na

372

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

373

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

374

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

375

Urologic robots and future directions  

E-print Network

PURPOSE OF REVIEW: Robot-assisted laparoscopic surgery in urology has gained immense popularity with the daVinci system, but a lot of research teams are working on new robots. The purpose of this study is to review current urologic robots and present future development directions. RECENT FINDINGS: Future systems are expected to advance in two directions: improvements of remote manipulation robots and developments of image-guided robots. SUMMARY: The final goal of robots is to allow safer and more homogeneous outcomes with less variability of surgeon performance, as well as new tools to perform tasks on the basis of medical transcutaneous imaging, in a less invasive way, at lower costs. It is expected that improvements for a remote system could be augmented in reality, with haptic feedback, size reduction, and development of new tools for natural orifice translumenal endoscopic surgery. The paradigm of image-guided robots is close to clinical availability and the most advanced robots are presented with end-use...

Mozer, Pierre; Stoianovici, Dan; 10.1097/MOU.0b013e32831cc1ba

2008-01-01

376

Telemedicine and robotics: paving the way to the globalization of surgery.  

PubMed

The concept of delivering health services at a distance, or telemedicine is becoming an emerging tool for the field of surgery. For the surgical services, telepresence surgery through robotics is gradually being incorporated into health care practices. This article will provide a brief overview of the principles surrounding telemedicine and telepresence surgery as they specifically relate to robotics. Where limitations have been reached in laparoscopy, robotics has allowed further steps forward. The development of robotics in medicine has been a progression from passive to immersive technology. In gynecology, the utilization of robotics has evolved from the use of Aesop, a robotic arm for camera manipulation, to full robotic systems such as Zeus, and the daVinci surgical system. These systems have not only been used directly for a variety of procedures but have also become a useful tool for conferencing and the mentoring of surgeons from afar. As this mode of technology becomes assimilated into the culture of surgery and medicine globally, caution must be taken to carefully navigate the economic, legal and ethical implications of telemedicine. Despite the challenges faced, telepresence surgery holds promise for more widespread applications. PMID:16213505

Senapati, S; Advincula, A P

2005-12-01

377

Augmented Reality Image Guidance in Minimally Invasive Prostatectomy  

NASA Astrophysics Data System (ADS)

This paper presents our work aimed at providing augmented reality (AR) guidance of robot-assisted laparoscopic surgery (RALP) using the da Vinci system. There is a good clinical case for guidance due to the significant rate of complications and steep learning curve for this procedure. Patients who were due to undergo robotic prostatectomy for organ-confined prostate cancer underwent preoperative 3T MRI scans of the pelvis. These were segmented and reconstructed to form 3D images of pelvic anatomy. The reconstructed image was successfully overlaid onto screenshots of the recorded surgery post-procedure. Surgeons who perform minimally-invasive prostatectomy took part in a user-needs analysis to determine the potential benefits of an image guidance system after viewing the overlaid images. All surgeons stated that the development would be useful at key stages of the surgery and could help to improve the learning curve of the procedure and improve functional and oncological outcomes. Establishing the clinical need in this way is a vital early step in development of an AR guidance system. We have also identified relevant anatomy from preoperative MRI. Further work will be aimed at automated registration to account for tissue deformation during the procedure, using a combination of transrectal ultrasound and stereoendoscopic video.

Cohen, Daniel; Mayer, Erik; Chen, Dongbin; Anstee, Ann; Vale, Justin; Yang, Guang-Zhong; Darzi, Ara; Edwards, Philip'eddie'

378

Robotic sialoadenectomy of the submandibular gland via a modified face-lift approach.  

PubMed

The purpose of this study was to describe and analyse the advantages and disadvantages of submandibular gland (SMG) resection using a robotic surgical system through a modified face-lift approach. The authors performed robotic sialoadenectomy of the SMG on 5 patients using the daVinci robot system through a modified face-lift approach. Three robotic arms were inserted through a modified face-lift incision; a face-down 30-degree endoscopic arm and two operative arms. The right arm was equipped with a harmonic scalpel and the left arm with a Maryland forceps. In all patients, robotic sialoadenectomy of the SMG was completed successfully. Diagnoses were sialolithiasis in two patients, pleomophic adenoma in two patients, and ranula in one patient. The mean robotic operative time was 90.2 min (range 62-185 min) and that for setting the robotic system was 8.2 min (range 5-15 min). No significant intra-operative or postoperative complications were observed. All patients were satisfied with the outcome and especially the cosmetic results at their last follow-up visit. In the authors opinion robotic sialoadenectomy of the SMG is technically feasible and secures a better cosmetic outcome than endoscopic submandibular resection. PMID:22578632

De Virgilio, A; Park, Y M; Kim, W S; Lee, S Y; Seol, J H; Kim, S-H

2012-11-01

379

Cerebral microdialysis methodology--evaluation of 20 kDa and 100 kDa catheters.  

PubMed

Microdialysis monitoring of cerebral metabolism is now performed in several neuro-intensive care units. Conventional microdialysis utilizes CMA70 catheters with 20 kDa molecular weight cut-off membranes enabling the measurement of small molecules such as glucose, lactate, pyruvate and glutamate. The CMA71 100 kDa molecular weight cut-off microdialysis catheter has recently been introduced to allow detection of larger molecules such as cytokines. The objective of this study was to perform in vitro and in vivo testing of the CMA71 microdialysis catheter, comparing its performance with the CMA70. In vitro comparison studies of three of each catheter using reference analyte solutions, demonstrated equivalent recovery for glucose, lactate, pyruvate and glutamate (range 94-97% for CMA70 and 88-103% for CMA71). In vivo comparison involved intracranial placement of paired CMA70 and CMA71 catheters (through the same cranial access device) in six patients with severe traumatic brain injury. Both catheters were perfused with CNS Perfusion Fluid without dextran at 0.3 microl min-1 with hourly sampling and bedside analysis on a CMA600 microdialysis analyser. The two catheters yielded equivalent results for glucose, lactate, pyruvate, glutamate and lactate/pyruvate ratio. CMA71 microdialysis catheters can, therefore, be used for routine clinical monitoring of extracellular substances, as well as for their intended research role of larger molecular weight protein sampling. PMID:15886437

Hutchinson, P J; O'Connell, M T; Nortje, J; Smith, P; Al-Rawi, P G; Gupta, A K; Menon, D K; Pickard, J D

2005-08-01

380

The Ubiquitin Receptor DA1 Interacts with the E3 Ubiquitin Ligase DA2 to Regulate Seed and Organ Size in Arabidopsis[C][W  

PubMed Central

Seed size in higher plants is determined by the coordinated growth of the embryo, endosperm, and maternal tissue. Several factors that act maternally to regulate seed size have been identified, such as AUXIN RESPONSE FACTOR2, APETALA2, KLUH, and DA1, but the genetic and molecular mechanisms of these factors in seed size control are almost totally unknown. We previously demonstrated that the ubiquitin receptor DA1 acts synergistically with the E3 ubiquitin ligase ENHANCER1 OF DA1 (EOD1)/BIG BROTHER to regulate the final size of seeds in Arabidopsis thaliana. Here, we describe another RING-type protein with E3 ubiquitin ligase activity, encoded by DA2, which regulates seed size by restricting cell proliferation in the maternal integuments of developing seeds. The da2-1 mutant forms large seeds, while overexpression of DA2 decreases seed size of wild-type plants. Overexpression of rice (Oryza sativa) GRAIN WIDTH AND WEIGHT2, a homolog of DA2, restricts seed growth in Arabidopsis. Genetic analyses show that DA2 functions synergistically with DA1 to regulate seed size, but does so independently of EOD1. Further results reveal that DA2 interacts physically with DA1 in vitro and in vivo. Therefore, our findings define the genetic and molecular mechanisms of three ubiquitin-related proteins DA1, DA2, and EOD1 in seed size control and indicate that they are promising targets for crop improvement. PMID:24045020

Xia, Tian; Li, Na; Dumenil, Jack; Li, Jie; Kamenski, Andrei; Bevan, Michael W.; Gao, Fan; Li, Yunhai

2013-01-01

381

A cosmologia no ensino da geografia  

NASA Astrophysics Data System (ADS)

O principal objetivo deste trabalho é auxiliar o professor de Geografia em sala de aula no ensino de tópicos relacionados com a Cosmologia. A idéia deste trabalho surgiu quando foi constatado que o professor de Geografia tem dificuldades de ensinar este tópico. Esta constatação foi feita por uma das autoras ao lecionar este tópico no ensino fundamental e em discussões com outros professores de Geografia. Da mesma maneira que ocorria desde os tempos mais antigos, os alunos têm muito interesse em conhecer os fenômenos que ocorrem no Cosmo, porém os livros didáticos de Geografia utilizados em sala de aula não são ricos em informações sobre este assunto. Assim, o professor de Geografia tem poucas informações para discutir este assunto em sala de aula e não dá a devida importância para este tópico. Então, foi desenvolvido um material de apoio para professores de Geografia sobre a origem do Universo, sua evolução e seu possível futuro evolutivo segundo as mais recentes teorias, com base em perguntas feitas pelos alunos de ensino fundamental e as informações trazidas nos livros didáticos Não cabe a este material inovar e tão pouco trazer uma metodologia de ensino de Cosmologia. Neste material o professor de Geografia pode encontrará um banco de informações, que constitui no estabelecimento de conceitos, teorias e hipóteses, sobre a Cosmologia, em linguagem simples e de fácil entendimento. Para desenvolvê-lo, foram feitas pesquisas não exaustivas em livros e revistas científicas, compilação e discussão em forma cronológica das teorias aceitas sobre modelos cosmológicos. Portanto, este material será apresentado neste trabalho.

Santos, S. C.; Chiaradia, A. P. M.

2003-08-01

382

Indocyanine green for intraoperative localization of ureter.  

PubMed

Intraurethral injection of indocyanine green (ICG; Akorn, Lake Forest, IL) and visualization under near-infrared (NIR) light allows for real-time delineation of the ureter. This technology can be helpful to prevent iatrogenic ureteral injury during pelvic surgery. Patients were scheduled to undergo robot-assisted laparoscopic sacrocolpopexy. Before the robotic surgery started, the tip of a 6-F ureteral catheter was inserted into the ureteral orifice. Twenty-five milligrams of ICG was dissolved in 10-mL of sterile water and injected through the open catheter. The same procedure was repeated on the opposite side. The ICG reversibly stained the inside lining of the ureter by binding to proteins on urothelial layer. During the course of robotic surgery, the NIR laser on the da Vinci Si surgical robot (Intuitive Surgical, Inc, Sunnyvale, CA) was used to excite ICG molecules, and infrared emission was captured by the da Vinci filtered lens system and electronically converted to green color. Thus, the ureter fluoresced green, which allowed its definitive identification throughout the entire case. In all cases of >10 patients, we were able to visualize bilateral ureters with this technology, even though there was some variation in brightness that depended on the depth of the ureter from the peritoneal surface. For example, in a morbidly obese patient, the ureters were not as bright green. There were no intraoperative or postoperative adverse effects attributable to ICG administration for up to 2 months of observation. In our experience, this novel method of intraurethral ICG injection was helpful to identify the entire course of ureter and allowed a safe approach to tissues that were adjacent to the urinary tract. The advantage of our technique is that it requires the insertion of just the tip of ureteral catheter. Despite our limited cohort of patients, our findings are consistent with previous reports of the excellent safety profile of intravenous and intrabiliary ICG. Intraurethral injection of ICG and visualization under NIR light allows for real-time delineation of the ureter. This technology can be helpful to prevent iatrogenic ureteral injury during pelvic surgery. PMID:24835212

Siddighi, Sam; Yune, Junchan Joshua; Hardesty, Jeffrey

2014-10-01

383

Fluid Management System (FMS) fluid systems overview  

NASA Technical Reports Server (NTRS)

Viewgraphs on fluid management system (FMS) fluid systems overview are presented. Topics addressed include: fluid management system description including system requirements (integrated nitrogen system, integrated water system, and integrated waste gas system) and physical description; and fluid management system evolution.

Baird, R. S.

1990-01-01

384

Identificac~ao da Doenca de Chagas Baseada em Analise de Sinais de Variabilidade da Frequ^encia Cardiaca  

E-print Network

variabilidade da frequ^encia card´iaca (VFC) permite avaliar o equil´ibrio entre as influ^encias simp´aticas e´alise temporal, espectral e de Poincar´e de sinais de VFC de indiv´iduos normais e chag´asicos; Buscar combina distingu´iveis. Variabilidade da frequ^encia card´iaca O sinal de VFC ´e obtido medindo os intervalos entre

Carvalho, João Luiz

385

High Molecular Weight Isoforms of Growth Hormone In Cells of the Immune System  

PubMed Central

A substantial body of research exists to support the idea that cells of the immune system produce growth hormone (GH). However, the structure and mechanism of action of lymphocyte-derived GH continues to remain largely unknown. Here we present the results of Western analysis of whole cell extracts showing that different molecular weight isoforms of GH of approximately 100 kDa, 65 kDa, and 48 kDa can be detected in primary mouse cells of the immune system and in the mouse EL4 cell line. The identity of the 65 kDa and 48 kDa isoforms of GH were confirmed by mass spectrometry. The various isoforms were detected in both enriched T and B spleen cell populations. The large molecular weight isoform appears to reside primarily in the cytoplasm whereas the lower molecular weight 65 kDa and 48 kDa isoforms were detected primarily in the nucleus. These results also suggest that GH isoforms are induced by oxidative stress. In EL4 cells overexpressing GH, the expression of luciferase controlled by a promoter containing the antioxidant response element is increased almost three-fold above control. The data suggest that the induction of isoforms of the GH molecule in cells of the immune system may be an important mechanism of adaptation and/or protection of lymphoid cells under conditions of oxidative stress. PMID:21741628

Weigent, Douglas A.

2013-01-01

386

Cardiovascular system  

MedlinePLUS Videos and Cool Tools

The cardiovascular system is composed of the heart and the network of arteries, veins, and capillaries that transport blood throughout the ... carries waste products from the tissues to the systems of the body through which they are eliminated. ...

387

Projet DaFOE4App DIFFERENTIAL AND FORMAL ONTOLOGIES EDITOR FOR APPLICATIONS  

E-print Network

Projet DaFOE4App DIFFERENTIAL AND FORMAL ONTOLOGIES EDITOR FOR APPLICATIONS Dossier A.1 / Document DaFOE4App DaFOE4App Dossier A.1 Lot SPA_1 Tâche concernée Titre : Cahier des charges scientifique et scientifique et technique de la plateforme DaFOE­ MdD hal-00713700,version1-2Jul2012 #12;Projet DaFOE4App

Paris-Sud XI, Université de

388

Avaliação experimental do efeito da razão de carregamento sobre o cáculo da distância crítica : um estudo para o aço ASTM A743 CA6NM.  

E-print Network

??Dissertação (mestrado)—Universidade de Brasília, Faculdade Gama/Faculdade de Tecnologia, Programa de Mestrado em Integridade de Materiais da Engenharia, 2013. Este trabalho avaliou a influência da razão… (more)

Sá, Marcus Vinícius Costa

2013-01-01

389

Expert systems and fuzzy systems  

SciTech Connect

This book examines the design of the expert computer system and how fuzzy systems can be used to deal with imprecise information. As the author explores the effects of semantic systems on decision support systems, he asserts that the utilization of fuzzy set theory can help an expert system draw from its knowledge base more efficiently and therefore make more accurate and reliable decisions. The book includes realistic status reports in approximate reasoning and knowledge representation that are supported by a ''theory of categories'' mathematical approach. The differences between symbolic and semantic manipulation are outline, and detailed information is given on the actual theory of knowledge-based systems.

Negoita, C.

1985-01-01

390

A INTELIGÊNCIA HUMANA: CONTORNOS DA PESQUISA 1  

Microsoft Academic Search

Human intelligence is understood and referred to as a plural concept, which shapes adaptative behavior. The paper considers conceptual and operational definitions of intelligence, implicit and explicit theories, major paradigms of research and underlying metaphors on mental processing, and examines two systemic models of self-management. The variety of techniques of data collection and experimental evidence analysis will definitely enhance the

Maria José Miranda

391

System Effectiveness  

SciTech Connect

An effective risk assessment system is needed to address the threat posed by an active or passive insider who, acting alone or in collusion, could attempt diversion or theft of nuclear material. It is critical that a nuclear facility conduct a thorough self-assessment of the material protection, control, and accountability (MPC&A) system to evaluate system effectiveness. Self-assessment involves vulnerability analysis and performance testing of the MPC&A system. The process should lead to confirmation that mitigating features of the system effectively minimize the threat, or it could lead to the conclusion that system improvements or upgrades are necessary to achieve acceptable protection against the threat. Analysis of the MPC&A system is necessary to understand the limits and vulnerabilities of the system to internal threats. Self-assessment helps the facility be prepared to respond to internal threats and reduce the risk of theft or diversion of nuclear material. MSET is a self-assessment or inspection tool utilizing probabilistic risk assessment (PRA) methodology to calculate the system effectiveness of a nuclear facility's MPC&A system. MSET analyzes the effectiveness of an MPC&A system based on defined performance metrics for MPC&A functions based on U.S. and international best practices and regulations. A facility's MC&A system can be evaluated at a point in time and reevaluated after upgrades are implemented or after other system changes occur. The total system or specific subareas within the system can be evaluated. Areas of potential performance improvement or system upgrade can be assessed to determine where the most beneficial and cost-effective improvements should be made. Analyses of risk importance factors show that sustainability is essential for optimal performance. The analyses reveal where performance degradation has the greatest detrimental impact on total system risk and where performance improvements have the greatest reduction in system risk. The risk importance factors show the amount of risk reduction achievable with potential upgrades and the amount of risk reduction actually achieved after upgrades are completed. Applying the risk assessment tool gives support to budget prioritization by showing where budget support levels must be sustained for MC&A functions most important to risk. Results of the risk assessment are also useful in supporting funding justifications for system improvements that significantly reduce system risk.

Powell, Danny H [ORNL] [ORNL; Elwood Jr, Robert H [ORNL] [ORNL

2011-01-01

392

Human 60-kDa SS-A/Ro ribonucleoprotein autoantigen gene (SSA2) localized to 1q31 by fluorescence in situ hybridization  

SciTech Connect

Human autoantibodies to intracellular antigens are often found in patients with systemic rheumatic diseases. Our laboratory and others have reported the cloning of the cDNAs for two protein autoantigens. The 60-kDa protein is a member of the RNA binding protein family containing an RNA binding motif and has been shown to be primarily responsible for direct interaction with hY-RNAs. The assignment of the 60-kDa autoantigen gene (SSA2) to 1q31 may allow further investigation of the genetic basis of human autoimmune diseases in which ss-A/Ro antibodies are observed. 14 refs., 1 fig.

Chan, E.K.L.; Tan, E.M. [Scripps Research Institute, La Jolla, CA (United States)] [Scripps Research Institute, La Jolla, CA (United States); Ward, D.C. [Yale Univ. School of Medicine, New Haven, CT (United States)] [and others] [Yale Univ. School of Medicine, New Haven, CT (United States); and others

1994-09-01

393

Effect of Delta-Sleep-Inducing Peptide on Expression of Heat Shock Protein 70 kDa in K562 Cells  

Microsoft Academic Search

For evaluation of the stress-protective influence of delta-sleep inducing peptide we studied its effects on the system of\\u000a heat-shock proteins in immune cells using the method of flow cytometry. The peptide affected the expression of heat-shock\\u000a protein 70 kDa in cultured human myeloleukemia K562 cells. Delta-sleep-inducing peptide reduces accumulation of intracellular\\u000a heat shock proteins 70 kDa in cells cultured under conditions of

A. A. Nurbakov; I. I. Mikhaleva; A. M. Sapozhnikov

2009-01-01

394

Caracterização da Clientela das Clínicas-Escola de Cursos de Psicologia da Região Metropolitana de Porto Alegre Client's Profile of University's Psychology Clinics from Porto Alegre's Metropolitan Region  

Microsoft Academic Search

Resumo São diversos os estudos sobre a caracterização da clientela de clínicas-escola de Psicologia no Brasil. Todavia, há escassez de pesquisas desta natureza no Rio Grande do Sul. Este trabalho se propõe a realizar uma pesquisa de levantamento das características sociodemográficas e clínicas da população que buscou atendimento em 2004 nas dez clínicas-escola da Região Metropolitana de Porto Alegre. É

Paula von Mengden Campezatto; Maria Lúcia Tiellet Nunes

395

Pressure equilibrium and jump study on unfolding of 23-kDa protein from spinach photosystem II.  

PubMed

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 degrees 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 (DeltaG(u)) and volume change (DeltaV(u)) 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 DeltaG(u) but also with a decrease in DeltaV(u). 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. PMID:15531632

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

2005-02-01

396

Microfluidic Systems Integrated Microfluidic Systems**  

E-print Network

Microfluidic Systems Integrated Microfluidic Systems** Rustem F. Ismagilov* Keywords: analytical methods · enzymes · microfluidics · microreactors · protein structures Microfluidic systems use networks of channels thinner than a human hair to manipulate nanoliter volumes of re- agents. The goal of microfluidics

Ismagilov, Rustem F.

397

Robotic surgical training.  

PubMed

In July 2000, the da Vinci Surgical System (Intuitive Surgical, Inc) received Food and Drug Administration approval for intracardiac applications, and the first mitral valve repair was done at the East Carolina Heart Institute in May 2000. The system is now approved and used in many surgical specialties. With this disruptive technology and accepted use, surgeons and hospitals are seeking the most efficacious training pathway leading to safe use and responsible credentialing.One of the most important issues related to safe use is assembling the appropriate team of professionals involved with patient care. Moreover, proper patient selection and setting obtainable goals are also important.Creation and maintenance of a successful program are discussed in the article focusing on realistic goals. This begins with a partnership between surgeon leaders, hospital administrators, and industry support. Through this partnership, an appropriate training pathway and clinical pathway for success can be outlined. A timeline can then be created with periods of data analysis and adjustments as necessary. A successful program is attainable by following this pathway and attending to every detail along the journey. PMID:23528718

Ben-Or, Sharon; Nifong, L Wiley; Chitwood, W Randolph

2013-01-01

398

Artificial interfaces ("AI") in surgery: historic development, current status and program implementation in the public health sector.  

PubMed

The past two decades have seen considerable advances in the application of artificial interfaces (AI) in surgery. Several have been developed including AESOP (Automated Endoscopic System for Optimal Positioning), Zeus and the Da Vinci Surgical System (DVSS). Whilst each has advantages DVSS is being used increasingly across multiple surgical specialities. These developments generate many challenges in an era where the emphasis is increasingly on safer and cost-effective surgery. Whilst the role of DVSS is firmly established in urologic and gynaecologic surgery, the role of DVSS in gastrointestinal surgery is evolving. Recent data indicate that it is at least as oncologically effective, whilst providing numerous benefits (e.g. reduced conversion and complication rates) over traditional laparoscopic approaches. The increasing adoption of AI/DVSS worldwide places institutes and health sectors under increasing pressure to adopt and develop such programs. This article provides (1) an update on the current status of AI in surgery in general and in colorectal surgery and (2) an appraisal of the cost implications of the establishment and implementation of AI/DVSS-based provisions in the public health sector. The numerous challenges faced generate many opportunities in the implementation of present and future surgical technologies. PMID:23375732

Healy, Donagh A; Murphy, Shane P; Burke, John P; Coffey, John C

2013-06-01

399

Robotics in Gynecology: Why is this Technology Worth Pursuing?  

PubMed

Robotic laparoscopy in gynecology, which started in 2005 when the Da Vinci Surgical System (Intuitive Surgical Inc) was approved by the US Food and Drug Administration for use in gynecologic procedures, represents today a modern, safe, and precise approach to pathology in this field. Since then, a great deal of experience has accumulated, and it has been shown that there is almost no gynecological surgery that cannot be approached with this technology, namely hysterectomy, myomectomy, sacrocolpopexia, and surgery for the treatment of endometriosis. Albeit no advantages have been observed over conventional laparoscopy and some open surgical procedures, robotics do seem to be advantageous in highly complicated procedures when extensive dissection and proper anatomy reestablishment is required, as in the case of oncologic surgery. There is no doubt that implementation of better logistics in finance, training, design, and application will exert a positive effect upon robotics expansion in gynecological medicine. Contrary to expectations, we estimate that a special impact is to be seen in emerging countries where novel technologies have resulted in benefits in the organization of health care systems. PMID:24453521

Ayala-Yáñez, Rodrigo; Olaya-Guzmán, Emilio José; Haghenbeck-Altamirano, Javier

2013-07-24

400

Robotics in Gynecology: Why is this Technology Worth Pursuing?  

PubMed Central

Robotic laparoscopy in gynecology, which started in 2005 when the Da Vinci Surgical System (Intuitive Surgical Inc) was approved by the US Food and Drug Administration for use in gynecologic procedures, represents today a modern, safe, and precise approach to pathology in this field. Since then, a great deal of experience has accumulated, and it has been shown that there is almost no gynecological surgery that cannot be approached with this technology, namely hysterectomy, myomectomy, sacrocolpopexia, and surgery for the treatment of endometriosis. Albeit no advantages have been observed over conventional laparoscopy and some open surgical procedures, robotics do seem to be advantageous in highly complicated procedures when extensive dissection and proper anatomy reestablishment is required, as in the case of oncologic surgery. There is no doubt that implementation of better logistics in finance, training, design, and application will exert a positive effect upon robotics expansion in gynecological medicine. Contrary to expectations, we estimate that a special impact is to be seen in emerging countries where novel technologies have resulted in benefits in the organization of health care systems. PMID:24453521

Ayala-Yanez, Rodrigo; Olaya-Guzman, Emilio Jose; Haghenbeck-Altamirano, Javier

2013-01-01

401

Evaluation and optimization of two complementary cross-flow ultrafiltration systems toward isolation of coastal surface water colloids.  

PubMed

While colloidal phases in natural waters are important to the speciation and bioavailability of trace metals and organic compounds, accurate isolation of these submicron entities from their lower molecular-weight counterparts has proved challenging. Here, both laboratory and field experiments have been conducted to constrain integrity aspects of two different cross-flow filtration (CFF) systems. We tested both a commonly applied 5000 cm2 CFF system (Pellicon2, Millipore; manufacturer-specified 1 and 3 kDa cutoff) and a less studied mini-CFF system with a 50 cm2 membrane area (Pellicon Lab Scale XL, Millipore; with 5, 10, 100, and 1000 kDa cutoff). A natural water matrix amended with a series of fluorescently tagged colloidal probes was employed to demonstrate that a cross-flow ratio (CFR; retentate-to-permeate flux) > 15 was required for both of these systems to obtain high recoveries of colloids. Contrary to previous calibrations of CFF, also at colloid concentrations characteristic of natural waters, the established retention profiles for the colloid probes on these systems, when operated under CFR > 15, affirmed the manufacturer-specified cutoff values (in parentheses): 2.4 kDa (1 kDa), 3.3 kDa (3 kDa), 6.1 kDa (5 kDa) and 8.7 kD (10 kDa). A concentration factor (cf) > 10 was found necessary for the reliable determination of the colloidal pool of several elements in the surface waters of the open Baltic Sea. Application of CFR > 15 and cf > 10 returned recoveries around 100% for the studied organic carbon, Ca, Mo, Fe, Cu, and Ni on both systems. Furthermore, the trend of colloid association for the transition elements in the offshore Baltic surface waters followed expectations from their Irving-Williams series of coordination chemistry. PMID:12038835

Larsson, Jenny; Gustafsson, Orjan; Ingri, Johan

2002-05-15

402

First-order kinematics of wedge-scale active Himalayan deformation: Insights from Darjiling-Sikkim-Tibet (DaSiT) wedge  

NASA Astrophysics Data System (ADS)

The Indian Plate has collided with the Eurasian Plate along an arcuate boundary over the last 55-60 million years defining the Himalayan Mountain belt. The geometry of the collision boundary is wedge-shaped; the base of this wedge is defined by a decollement named the Main Himalayan Thrust (MHT). In the Darjiling-Sikkim-Tibet (DaSiT) Himalayan wedge, a crustal-scale fault-bend fold (Kangmar Anticline) and the Lesser Himalayan Duplex (LHD) are dominant structures that have built taper and controlled the foreland-ward propagation of the thrust sheets. A frontal physiographic half-window has eroded through the Main Central Thrust (MCT) sheet to expose the LHD in the DaSiT wedge. Preliminary data suggest that active tectonics and seismicity in the DaSiT wedge may be concentrated in the half-window; this suggests that LHD may be an active structure. High-precision Global Positioning System measurements in the DaSiT wedge suggest that a minimum of 12 mm/yr convergence is being accommodated in the Darjiling-Sikkim Himalaya out of which ˜4 mm/yr convergence is being taken up in the LHD. Given that decollement earthquakes with minimum internal deformation in a deforming wedge occur when it attains critical taper, continued deformation within the DaSiT wedge and the lack of great decollement earthquakes indicate that the DaSiT Himalayan wedge is presently sub-critical and in the process of building taper. The sub-critical nature of the DaSiT wedge is probably the result of low topographic and decollement slopes, weaker rocks and pronounced erosion in the frontal part of the wedge.

Mukul, Malay

2010-11-01

403

Operating Systems  

NSDL National Science Digital Library

Rashid Bin Muhammad at Kent State University presents his page of lectures notes and other instructional materials on operating systems. The site is divided into a number of topics about operating systems: history, structure, process, threads, Solaris-2, CPU / process scheduling, schedule algorithm, interprocess communication, deadlock, important UNIX commands, and references. The site is then followed by links to outside resources to help supplement the material presented here. This is a great resource for computer science instructors teaching students about operating systems.

Bin Muhammad, Rashid

2009-06-24

404

Functional reconstitution of the canalicular bile salt transport system of rat liver.  

PubMed Central

Recent studies have suggested that the canalicular bile salt transport system of rat liver corresponds to a 100-kDa membrane glycoprotein. In the present study we attempted to functionally reconstitute the 100-kDa protein into artificial proteoliposomes. Canalicular membrane proteins were solubilized with octyl glucoside in the presence of asolectin phospholipids. The extracts were treated with preimmune serum or the 100-kDa protein selectively immunoprecipitated with a polyclonal antiserum. Proteins remaining in the supernatant were then incorporated into proteoliposomes by gel-filtration chromatography. Canalicular proteoliposomes containing the 100-kDa protein exhibited transstimulatable taurocholate uptake that could be inhibited by 4,4'-diisothiocyanato-2,2'-stilbenedisulfonic acid (DIDS). In contrast, no DIDS-sensitive transstimulatable taurocholate uptake was found in 100-kDa protein-free canalicular proteoliposomes. However, when the immunoprecipitated 100-kDa protein was dissociated from the antibodies and exclusively incorporated into liposomes, reconstitution of DIDS-sensitive transstimulatable and electrogenic taurocholate anion transport was again positive. Although incorporation of solubilized basolateral membrane proteins into liposomes also resulted in a prompt reconstitution of Na+ gradient-driven taurocholate uptake, the anti-100-kDa antibodies had no effects on the reconstituted transport activity of basolateral proteins. Thus, the findings establish that the previously characterized canalicular-specific 100-kDa protein is directly involved in the transcanalicular secretion of bile salts. Images PMID:3413083

Ruetz, S; Hugentobler, G; Meier, P J

1988-01-01

405

Stimulated acoustic emissions from within the human auditory system  

E-print Network

drum, a well-damped oscillatory motion of the whole middle ear structureis initiated, as observedby in movement of the middle ear system giv- ing rise to a secondary disturbance of the ear drum. RetrogradePerceptionResearchLaboratory,TheRoyalNationalThroat,Noseand Ear Hospital,Gray's Inn Road, London, England WCIX 8DA (Received5 April 1978;revised10July 1978

Allen, Jont

406

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

407

Notational Support for the Design of Augmented Reality Systems  

E-print Network

Notational Support for the Design of Augmented Reality Systems Emmanuel Dubois1 , Paulo Pinheiro da. There is growing interest in augmented reality (AR) as tech- nologies are developed that enable ever smoother the use of augmented reality (AR) techniques is becoming a crucial challenge for designers of interactive

Pinheiro da Silva, Paulo

408

Geomagnetic observations on tristan da cunha, south atlantic ocean  

USGS Publications Warehouse

Few geomagnetic ground observations exist of the Earth's strongest core field anomaly, the South Atlantic Anomaly (SAA). The geomagnetic repeat station on the island Tristan da Cunha, located half-way between South Africa and South America at 37?? 05' S, 12?? 18' W, is therefore of crucial importance. We have conducted several sets of repeat station measurements during magnetically quiet conditions (Kp 2o or less) in 2004. The procedures are described and the results are compared to those from earlier campaigns and to the predictions of various global field models. Features of the local crustal bias field and the solar quiet daily variation are discussed. We also evaluate the benefit of continuous magnetic field recordings from Tristan da Cunha, and argue that such a data set is a very valuable addition to geomagnetic satellite data. Recently, funds were set up to establish and operate a magnetometer station on Tristan da Cunha during the Swarm magnetic satellite mission (2011-2014).

Matzka, J.; Olsen, N.; Maule, C.F.; Pedersen, L.W.; Berarducci, A.M.; Macmillan, S.

2009-01-01

409

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

410

Exploring the size limit of protein diffusion through the periplasm in cyanobacterium Anabaena sp. PCC 7120 using the 13 kDa iLOV fluorescent protein.  

PubMed

In the filamentous heterocyst-forming cyanobacterium Anabaena PCC 7120, vegetative cells and heterocysts are interdependent on each other and engaged in exchanges of metabolites for survival when grown under diazotrophic conditions. In this organism, the periplasm appears to be continuous along each filament, with a shared outer membrane; however, barriers exist preventing free diffusion of the fluorescent protein GFP (27 kDa) targeted into the periplasmic space. Here we expressed a smaller fluorescent protein iLOV (? 13 kDa) fused to the All3333 (a putative homologue of NrtA) signal sequence corresponding to those recognized by the TAT protein translocation system, which exports iLOV to the periplasm of either heterocysts or vegetative cells. Fluorescence microscopy and immunoblot analysis indicated that the iLOV protein is translocated into the periplasm of the producing cell and properly processed, but does not diffuse to neighboring cells via the periplasm. Thus, periplasmic barriers appear to block diffusion of molecules with a size of 13 kDa, the minimum size tested thus far. Assuming that the physical barrier is the peptidoglycan sacculus, its pores might allow diffusion of molecules within the size range between the PatS pentapeptide and iLOV, thus between 0.53 kDa and 13 kDa. PMID:23748014

Zhang, Li-Chen; Risoul, Véronique; Latifi, Amel; Christie, John M; Zhang, Cheng-Cai

2013-09-01

411

Extended space method for parameter identifiability of DAE systems.  

PubMed

Mathematical models of physical systems often have parameters that must be identified from physical data. This makes the analysis of the parameter identifiability of the given model system an essential prerequisite. Thus far, several methods have been proposed for analyzing the parameter identifiability of ordinary differential equation (ODE) systems. But, to the best of our knowledge, the parameter identifiability of differential algebraic equation (DAE) systems has scarcely been analyzed as a specific topic. Traditional differential algebraic (DA) methods developed for ODE systems are often applied directly on DAE systems. These methods, however, are not always applicable, e.g., when the prime ideal condition is not satisfied by a DAE system. In this paper, we propose a novel method to analyze the identifiability of DAE systems, based on the concept of space extension, through which the algebraic and differential variables can be decoupled. Furthermore, an inherent, low-dimensional, regular ODE system can be obtained, which is the external equivalent of the original DAE system. Subsequently, the differential algebraic (DA) method can then be used to analyze the identifiability of the low-dimension ODE system. Theoretical analysis is also presented for the proposed method. Two examples, including a simplified interaction model and an isothermal reactor system, are presented to illustrate the detailed steps and effectiveness of the proposed method. PMID:24411933

Chen, Li; Chen, Xi; Qian, Jixin; Yao, Zhen

2014-09-01

412

Multivariate and multiscale data assimilation in terrestrial systems: a review.  

PubMed

More and more terrestrial observational networks are being established to monitor climatic, hydrological and land-use changes in different regions of the World. In these networks, time series of states and fluxes are recorded in an automated manner, often with a high temporal resolution. These data are important for the understanding of water, energy, and/or matter fluxes, as well as their biological and physical drivers and interactions with and within the terrestrial system. Similarly, the number and accuracy of variables, which can be observed by spaceborne sensors, are increasing. Data assimilation (DA) methods utilize these observations in terrestrial models in order to increase process knowledge as well as to improve forecasts for the system being studied. The widely implemented automation in observing environmental states and fluxes makes an operational computation more and more feasible, and it opens the perspective of short-time forecasts of the state of terrestrial systems. In this paper, we review the state of the art with respect to DA focusing on the joint assimilation of observational data precedents from different spatial scales and different data types. An introduction is given to different DA methods, such as the Ensemble Kalman Filter (EnKF), Particle Filter (PF) and variational methods (3/4D-VAR). In this review, we distinguish between four major DA approaches: (1) univariate single-scale DA (UVSS), which is the approach used in the majority of published DA applications, (2) univariate multiscale DA (UVMS) referring to a methodology which acknowledges that at least some of the assimilated data are measured at a different scale than the computational grid scale, (3) multivariate single-scale DA (MVSS) dealing with the assimilation of at least two different data types, and (4) combined multivariate multiscale DA (MVMS). Finally, we conclude with a discussion on the advantages and disadvantages of the assimilation of multiple data types in a simulation model. Existing approaches can be used to simultaneously update several model states and model parameters if applicable. In other words, the basic principles for multivariate data assimilation are already available. We argue that a better understanding of the measurement errors for different observation types, improved estimates of observation bias and improved multiscale assimilation methods for data which scale nonlinearly is important to properly weight them in multiscale multivariate data assimilation. In this context, improved cross-validation of different data types, and increased ground truth verification of remote sensing products are required. PMID:23443380

Montzka, Carsten; Pauwels, Valentijn R N; Franssen, Harrie-Jan Hendricks; Han, Xujun; Vereecken, Harry

2012-01-01

413

Anticipatory systems as linguistic systems  

NASA Astrophysics Data System (ADS)

The idea of system is well established although not well defined. What makes up a system depends on the observer. Thinking in terms of systems is only a convenient way to conceptualize organizations, natural or artificial, that show coherent properties. Among all properties, which can be ascribed to systems, one property seems to be more outstanding than others, namely that of being anticipatory. In nature, anticipatory properties are found only in living organizations. In this way it can be said to separate non-living systems from living because there is no indication that any natural phenomenon occurring in systems where there is no indication of life is anticipatory. The characteristic of living systems is that they are exposed to the evolution contrary to causal systems that do not undergo changes due to the influence of the environment. Causal systems are related to the past in such a way that subsequent situations can be calculated from knowledge of past situations. In causal systems the past is the cause of the present and there is no reference to the future as a determining agent, contrary to anticipatory systems where expectations are the cause of the present action. Since anticipatory properties are characteristic of living systems, this property, as all other properties in living systems, is a result of the evolution and can be found in plants as well as in animals. Thus, it is not only tied to consciousness but is found at a more basic level, i.e., in the interplay between genotype and phenotype. Anticipation is part of the genetic language in such a way that appropriate actions, for events in the anticipatory systems environment, are inscribed in the genes. Anticipatory behavior, as a result of the interpretation of the genetic language, has been selected by the evolution. In this paper anticipatory systems are regarded as linguistic systems and I argue that as such anticipation cannot be fragmented but must be holistically studied. This has the implication that anticipatory behavior can only partially be described in a computer language and, furthermore, it shows that only a restricted class of anticipatory systems can be transferred to computers.

Ekdahl, Bertil

2000-05-01

414

ECONOMIC SYSTEMS  

NSDL National Science Digital Library

The information you will explore is: List and categorize the four main types of Economic Systems in our world today. Create graphic Illustrations of thoughts and concepts. Express how economic system structures effect the lives of the people living in that system. Write to express an opinion or point of view. Experience a simulation of the marketplace. Research a country of your choice and find important factors about their economic system. Each country structures their economic system after one of the four main types or a combination of these. The assignments on this page will help you to gain a better understanding of the characteristics of the four main types of economic systems. Process: 1. Click on the following link Marketing Calendar Open the Global Economy power point. Use the Chapter 4 listening guide with the power point. chap4 listening guide 2. List the four main economic systems and find the main characterisitics of each. Compare strengths and weaknesses of each. Economic Systems Characteristics 3.Create a ...

Mrs.owen

2006-10-10

415

Digestive System  

NSDL National Science Digital Library

The digestive system is investigated in this learning activity to help participants learn how food is broken down and prepared for absorption, and list the components of the digestive system as well as their functions. Organs investigated include the mouth, esophagus, stomach, small intestine, large intestine, rectum, and anus.

Bidlack, Jim

416

Multimedia Systems  

NSDL National Science Digital Library

CSC 304. Multimedia Systems (3) Prerequisite: CSC 121. Introduction to technologies of the Internet and networked multimedia systems. Issues in web page design; Internet client/server programming; collaborative computing and group work; network publishing; security and encryption; audio and video compression; ethical issues and privacy; e-commerce; and distributed object computing. Open only to students of junior or senior standing.

Patterson, Ms L.

2003-04-21

417

Power system  

DOEpatents

A power system includes a prime mover, a transmission, and a fluid coupler having a selectively engageable lockup clutch. The fluid coupler may be drivingly connected between the prime mover and the transmission. Additionally, the power system may include a motor/generator drivingly connected to at least one of the prime mover and the transmission. The power-system may also include power-system controls configured to execute a control method. The control method may include selecting one of a plurality of modes of operation of the power system. Additionally, the control method may include controlling the operating state of the lockup clutch dependent upon the mode of operation selected. The control method may also include controlling the operating state of the motor/generator dependent upon the mode of operation selected.

Hickam, Christopher Dale (Glasford, IL)

2008-03-18

418

Cascade Distiller System Performance Testing Interim Results  

NASA Technical Reports Server (NTRS)

The Cascade Distillation System (CDS) is a rotary distillation system with potential for greater reliability and lower energy costs than existing distillation systems. Based upon the results of the 2009 distillation comparison test (DCT) and recommendations of the expert panel, the Advanced Exploration Systems (AES) Water Recovery Project (WRP) project advanced the technology by increasing reliability of the system through redesign of bearing assemblies and improved rotor dynamics. In addition, the project improved the CDS power efficiency by optimizing the thermoelectric heat pump (TeHP) and heat exchanger design. Testing at the NASA-JSC Advanced Exploration System Water Laboratory (AES Water Lab) using a prototype Cascade Distillation Subsystem (CDS) wastewater processor (Honeywell d International, Torrance, Calif.) with test support equipment and control system developed by Johnson Space Center was performed to evaluate performance of the system with the upgrades as compared to previous system performance. The system was challenged with Solution 1 from the NASA Exploration Life Support (ELS) distillation comparison testing performed in 2009. Solution 1 consisted of a mixed stream containing human-generated urine and humidity condensate. A secondary objective of this testing is to evaluate the performance of the CDS as compared to the state of the art Distillation Assembly (DA) used in the ISS Urine Processor Assembly (UPA). This was done by challenging the system with ISS analog waste streams. This paper details the results of the AES WRP CDS performance testing.

Callahan, Michael R.; Pensinger, Stuart; Sargusingh, Miriam J.

2014-01-01

419

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. PMID:22163700

Varela, Gervasio; Paz-Lopez, Alejandro; Becerra, Jose Antonio; Vazquez-Rodriguez, Santiago; Duro, Richard Jose

2011-01-01

420

Nearly degenerate time-resolved Faraday rotation in an interacting exciton system  

NASA Astrophysics Data System (ADS)

We report experimental studies of nearly degenerate time-resolved Faraday rotation (TRFR) of electron spin precession in an interacting exciton system. We show that many-body interactions between excitons strongly modify the TRFR response through the coupling of the spin coherence to two-exciton states. The striking difference between TRFR and transient differential absorption (DA) further reveals that exciton-exciton interactions play crucial but qualitatively different roles in TRFR and DA.

Shen, Yumin; Goebel, A. M.; Khitrova, G.; Gibbs, H. M.; Wang, Hailin

2005-12-01

421

A CMOS analog front-end circuit for an FDM-based ADSL system  

Microsoft Academic Search

A CMOS analog front-end circuit for an FDM-based ADSL system is presented. The circuit contains all analog functions including AGC amplifiers, continuous-time band pass filters, ?? AD\\/DA converters, and digital decimation and interpolation filters. On-chip automatic tuning of the bandpass filters provides more than 300% center frequency range with 1% frequency accuracy. The higher-order ?? AD\\/DA converters achieve 12-b data

Zhong-Yuan Chang; Damien Macq; D. Haspeslagh; Paul M. P. Spruyt; L. A. G. Goffart

1995-01-01

422

Blockade of atopic dermatitis-like skin lesions by DA-9102, a natural medicine isolated from Actinidia arguta, in the Mg-deficiency induced dermatitis model of hairless rats.  

PubMed

DA-9102 isolated from Actinidia arguta is a candidate of natural medicine currently under Phase II clinical trial for atopic dermatitis in Korea. In this study, spontaneous dermatitis was induced by magnesium deficiency in hairless rats and this system was applied to assess the suppressive effects of DA-9102 on atopic dermatitis-like skin disease. Oral administration of DA-9102 at a dose of 100 mg/kg for 16 days substantially suppressed the occurrence of spontaneous dermatitis. Eczematous skin lesions, water loss and scratching behavior were significantly decreased by DA-9102 in a dose-dependent manner. Infiltration of inflammatory cells into the skin and pathologic remodeling of the epidermis and dermis were much less than the Mg-def. group. Results from flow cytometry analysis of peripheral blood mononuclear cells indicated that DA-9102 suppressed activation of leukocytes. The decrease in the number of CD45RA+ cells was accompanied by a lower level of IgE in DA-9102 treated rats, and the reduction in the number of CD11b+ cells by DA-9102 in both periphery and skin was significant. Further, DA-9102 not only suppressed the mRNA expression of T(H)2 cytokines including IL-4 and IL-10 in the lymph node but it also decreased the levels of inflammatory mediators such as nitric oxide and leukotriene B(4) (LTB(4)) in the serum. Taken together, these results suggest that DA-9102 is an orally applicable potent immune modulator capable of controlling the occurrence of atopic dermatitis-like skin disease. PMID:18535171

Choi, Jeong June; Park, Bokyoung; Kim, Dong Hee; Pyo, Myoung-Yun; Choi, Sangzin; Son, Miwon; Jin, Mirim

2008-08-01

423

The effect of music on robot-assisted laparoscopic surgical performance.  

PubMed

Music is often played in the operating room to increase the surgeon's concentration and to mask noise. It could have a beneficial effect on surgical performance. Ten participants with limited experience with the da Vinci robotic surgical system were recruited to perform two surgical tasks: suture tying and mesh alignment when classical, jazz, hip-hop, and Jamaican music were presented. Kinematics of the instrument tips of the surgical robot and surface electromyography of the subjects were recorded. Results revealed that a significant music effect was found for both tasks with decreased time to task completion (P = .005) and total travel distance (P = .021) as well as reduced muscle activations ( P = .016) and increased median muscle frequency (P = .034). Subjects improved their performance significantly when they listened to either hip-hop or Jamaican music. In conclusion, music with high rhythmicity has a beneficial effect on robotic surgical performance. Musical environment may benefit surgical training and make acquisition of surgical skills more efficient. PMID:20817638

Siu, Ka-Chun; Suh, Irene H; Mukherjee, Mukul; Oleynikov, Dmitry; Stergiou, Nick

2010-12-01

424

Indocyanine Green (ICG) Fluorescent Cholangiography During Robotic Cholecystectomy: Results of 184 Consecutive Cases in a Single Institution.  

PubMed

Background/Aim. Laparoscopic cholecystectomy is currently the gold standard treatment for gallstone disease. Bile duct injury is a rare and severe complication of this procedure, with a reported incidence of 0.4% to 0.8% and is mostly a result of misperception and misinterpretation of the biliary anatomy. Robotic cholecystectomy has proven to be a safe and feasible approach. One of the latest innovations in minimally invasive technology is fluorescent imaging using indocyanine green (ICG). The aim of this study is to evaluate the efficacy of ICG and the Da Vinci Fluorescence Imaging Vision System in real-time visualization of the biliary anatomy. Methods. A total of 184 robotic cholecystectomies with ICG fluorescence cholangiography were performed between July 2011 and February 2013. All patients received a dose of 2.5 mg of ICG 45 minutes prior to the beginning of the surgical procedure. The procedures were multiport or single port depending on the case. Results. No conversions to open or laparoscopic surgery occurred in this series. The overall postoperative complication rate was 3.2%. No biliary injuries occurred. ICG fluorescence allowed visualization of at least 1 biliary structure in 99% of cases. The cystic duct, the common bile duct, and the common hepatic duct were successfully visualized with ICG in 97.8%, 96.1%, and 94% of cases, respectively. Conclusions. ICG fluorescent cholangiography during robotic cholecystectomy is a safe and effective procedure that helps real-time visualization of the biliary tree anatomy. PMID:24616013

Daskalaki, Despoina; Fernandes, Eduardo; Wang, Xiaoying; Bianco, Francesco Maria; Elli, Enrique Fernando; Ayloo, Subashini; Masrur, Mario; Milone, Luca; Giulianotti, Pier Cristoforo

2014-12-01

425

Diagnosis and management of intramural ectopic pregnancy.  

PubMed

Intramural pregnancy, a gestation completely surrounded by the myometrium located within the uterine wall with separation from the uterine cavity, is an extremely unusual form of pregnancy. Complications resulting from intramural pregnancy include inevitable uterine rupture with resultant hemorrhage and possible hysterectomy if diagnosis is not made early and treatment is not initiated. An asymptomatic patient was initially diagnosed with a missed abortion at approximately 6 weeks of gestation after a routine ultrasound. Suction curettage was performed approximately 1 month after the initial diagnosis. The pathology specimen failed to reveal placental villi. Ultimately, the diagnosis of intramural pregnancy was made via ultrasound and a computed tomography scan. She was treated with a single dose of systemically administered methotrexate. Over a period of 4 months, ?-human chorionic gonadotropin levels trended downward; however, the intramural pregnancy failed to resolve completely, and a persistent mass remained. The intramural pregnancy was removed using the da Vinci laparoscopic procedure (Intuitive Surgical, Sunnyvale, CA). If the diagnosis of intramural ectopic pregnancy is made sufficiently early, conservative measures can be taken, which can preserve a patient's future fertility. PMID:24034539

Bannon, Kimberly; Fernandez, Carlos; Rojas, David; Levine, Elliot M; Locher, Stephen

2013-01-01

426

Uncontrolled manifold analysis of arm joint angle variability during robotic teleoperation and freehand movement of surgeons and novices.  

PubMed

Teleoperated robot-assisted surgery (RAS) is used to perform a wide variety of minimally invasive procedures. However, current understanding of the effect of robotic manipulation on the motor coordination of surgeons is limited. Recent studies in human motor control suggest that we optimize hand movement stability and task performance while minimizing control effort and improving robustness to unpredicted disturbances. To achieve this, the variability of joint angles and muscle activations is structured to reduce task-relevant variability and increase task-irrelevant variability. In this study, we determine whether teleoperation of a da Vinci Si surgical system in a nonclinical task of simple planar movements changes this structure of variability in experienced surgeons and novices. To answer this question, we employ the UnControlled manifold analysis that partitions users' joint angle variability into task-irrelevant and task-relevant manifolds. We show that experienced surgeons coordinate their joint angles to stabilize hand movements more than novices, and that the effect of teleoperation depends on experience-experts increase teleoperated stabilization relative to freehand whereas novices decrease it. We suggest that examining users' exploitation of the task-irrelevant manifold for stabilization of hand movements may be applied to: (1) evaluation and optimization of teleoperator design and control parameters, and (2) skill assessment and optimization of training in RAS. PMID:24967980

Nisky, Ilana; Hsieh, Michael H; Okamura, Allison M

2014-12-01

427

Current status of robot-assisted laparoscopic surgery in pediatric urology.  

PubMed

Laparoscopic procedures for urological diseases in children have been proven to be safe and effective. However, the availability of laparoscopic procedures is still partly limited to experienced, high-volume centers because the procedures are technically demanding. The da Vinci robot system is being used for an increasing variety of reconstructive procedures because of the advantages of this approach, such as motion scaling, greater optical magnification, stereoscopic vision, increased instrument tip dexterity, and tremor filtration. Particularly in pediatric urologic surgery, where the operational field is limited owing to the small abdominal cavity of children, robotic surgical technology has its own strengths. Currently, robots are used to perform most surgeries in children that can be performed laparoscopically. In this review, we aimed to provide a comprehensive overview of the current role of robot-assisted laparoscopic surgery in Pediatric Urology by analyzing the published data in this field. A growing body of evidence supports the view that robotic technology is technically feasible and safe in pediatric urological surgery. Robotic technology provides additional benefits for performing reconstructive urologic surgery, such as in pyeloplasty, ureteral reimplantation, and enterocystoplasty procedures. The main limitations to robotic surgery are its high purchase and maintenance costs and that the cost-effectiveness of this technology remains to be validated. PMID:25132942

Song, Sang Hoon; Kim, Kun Suk

2014-08-01

428

Robotic splenectomy for mesothelial cyst: a case report.  

PubMed

Cystic lesions of the spleen represent a rare entity with an overall incidence of 0.5% among splenectomies. They can remain asymptomatic in 30% to 60% of patients or may cause symptoms for secondary compression of adjacent structures. Peripheral cysts may be suitable for conservative treatment whereas splenectomy is the accepted procedure for bulky and/or central lesions. Laparoscopy is the standard approach for elective splenic surgery, but in the last decade, introduction of the da Vinci robotic system has represented a further improvement in minimally invasive surgery, thanks to 3-dimensional vision and more accurate motion control. Herein, we report a case of a mesothelial splenic cysts successfully treated by robotic splenectomy; some anatomical considerations and technical aspects of robotic procedures have been discussed: it is a feasible and safe approach, particularly indicated in the presence of anatomic features such as an enlarged pancreatic tail and a type II vascular pattern of splenic pedicle. In such patients, the choice of a robotic approach may decrease the risk of intraoperative bleeding, thereby representing a further improvement in laparoscopic techniques. PMID:21471791

Lucandri, Giorgio; Felicioni, Francesco; Monsellato, Igor; Alfano, Giovanni; Pernazza, Graziano; Pende, Vito; Mazzocchi, Paolo; Bascone, Bruno; D'Annibale, Annibale

2011-04-01

429

Thoracic robotics at the Heart Hospital Baylor Plano: the first 20 cases.  

PubMed

A da Vinci Robotic Surgical System was purchased for The Heart Hospital Baylor Plano in fall 2011 and a program for robotic-assisted thoracic surgery commenced at the facility. Successive thoracic patients were offered and accepted a robotic-assisted operation. No patient was excluded because of age, height, weight, or comorbidities. The first 20 patients are summarized herein. Of the first 10 operations, only one was a lobectomy. As the program staff gained experience, seven of the latter 10 procedures were lobectomies. The average length of stay was 2.6 days (longest, 4 days). The average operating room time was 147 minutes overall and 200 minutes for lobectomies. The longest operating room time was 337 minutes in a patient who underwent a right middle lobectomy that was converted to a video-assisted thoracic surgery. Two patients developed atrial fibrillation, one of whom had a pacemaker and a history of paroxysmal atrial fibrillation. One patient developed a bronchopleural fistula on the first postoperative day, following a coughing episode. One patient was readmitted 6 days after hospital discharge with a pneumothorax, which was successfully treated with a small-bore catheter. In conclusion, robotic-assisted thoracic surgery has many advantages. Decreased complications can lead to improved outcomes, and hospitals can achieve cost savings as a result of reduced length of stay. PMID:23077378

Jett, G Kimble

2012-10-01

430

Thoracic robotics at the Heart Hospital Baylor Plano: the first 20 cases  

PubMed Central

A da Vinci Robotic Surgical System was purchased for The Heart Hospital Baylor Plano in fall 2011 and a program for robotic-assisted thoracic surgery commenced at the facility. Successive thoracic patients were offered and accepted a robotic-assisted operation. No patient was excluded because of age, height, weight, or comorbidities. The first 20 patients are summarized herein. Of the first 10 operations, only one was a lobectomy. As the program staff gained experience, seven of the latter 10 procedures were lobectomies. The average length of stay was 2.6 days (longest, 4 days). The average operating room time was 147 minutes overall and 200 minutes for lobectomies. The longest operating room time was 337 minutes in a patient who underwent a right middle lobectomy that was converted to a video-assisted thoracic surgery. Two patients developed atrial fibrillation, one of whom had a pacemaker and a history of paroxysmal atrial fibrillation. One patient developed a bronchopleural fistula on the first postoperative day, following a coughing episode. One patient was readmitted 6 days after hospital discharge with a pneumothorax, which was successfully treated with a small-bore catheter. In conclusion, robotic-assisted thoracic surgery has many advantages. Decreased complications can lead to improved outcomes, and hospitals can achieve cost savings as a result of reduced length of stay. PMID:23077378

2012-01-01

431

Emerging role of robotics in urology  

PubMed Central

Robotic assistance is one of the latest additions to the field of laparoscopic surgery. The most commonly used robotic device in Urology is the da Vinci® system of which over 200 devices are installed worldwide including 3 in India. This robot consists of three or four arms, one of which is used to hold and manipulate the laparoscopic camera while the others are used to manipulate specialized laparoscopic instruments with endowrist® technology that allows 7 degrees of freedom. The robot is currently used primarily for radical prostatectomies where complex dissection and reconstruction can be performed in less than 2 hours with excellent outcomes. There is a progressive increase in the number of surgeries being performed by this device which allows laparoscopy naïve surgeons to offer the benefits of minimally invasive surgery to their patients. The other surgeries where this device has been used to benefit are pyeloplasty, cystectomy with urinary diversion, nephrectomy and ureteric re-implant. The principal drawbacks of the device are the steep cost of machine and disposables. However, the benefits achieved in terms of improved surgical precision, magnified 3 dimensional vision, scaling of movements, remote surgery and as a teaching tools will help the robot establish a definitive place in the urologic armamentarium. PMID:21206664

Kumar, Rajeev; Hemal, Ashok K.

2005-01-01

432

Robot-assisted laparoscopic colorectal surgery.  

PubMed

Colorectal cancer is one of the most common malignancies seen in developed countries. Its current treatment is based on a multidisciplinary approach entailing surgery, chemotherapy and radiotherapy. Surgery can be performed with open and minimal invasive methods. Single incision laparoscopic surgery (SILS), natural orifice transluminal endoscopic surgery (NOTES) and robot assisted laparoscopic surgery (RALS) are the final points to be reached in minimally invasive surgery. The first robotic colorectal surgical intervention was performed in 2001 after getting the FDA approval for the da Vinci surgical system in intraabdominal surgery, and since then, its use in this field gradually increased. Compared to open surgery, the advantage and superiority of robotic surgery, especially in narrow areas such as the pelvis, has been shown in many studies. It is a safe and feasible method. Although there are many existing studies about minimally invasive surgery, more randomized studies with larger case numbers should be carried out in order to establish the favorable oncological and functional outcomes of robotic surgery in addition to its obviously observed advantages. PMID:24101004

Alimoglu, O; Atak, I; Orhun, K; Eren, T

2013-10-01

433

System Toolbox  

NSDL National Science Digital Library

System Toolbox is designed for system administrators who deal with a variety of platforms. The site covers Windows NT, General Unix, Novell, Linux, Solaris, HP-UX, and the Mac OS. The "toolbox" for each platform offers annotated links to Tools (Disk Management, Anti-Virus, Security, etc.), Articles, and other useful Links. While the information here is hardly comprehensive, the site offers useful, if often basic, resources for administrators. System Toolbox's brand new History section looks promising, with two articles currently posted, "Von Braun's Slide Rule" and "The Godfather of Computing - Charles Babbage." The Comments section allows users to post questions or comments.

2001-01-01

434

Pupillometry and 123I-DaTSCAN imaging in Parkinson's disease: a comparison study.  

PubMed

The purpose of this study was the evaluation of pupil light reflex (PLR) in patients with Parkinson's disease (PD) by using a modern pupillometry system and the investigation of its potential relationship with dopamine transporter imaging (DaTSCAN), which is an objective method for the evaluation of presynaptic dopaminergic system. PLR was evaluated using pupillometry in 35 patients with PD without clinical evidence of autonomic dysfunction and 44 healthy matched controls. PLR was elicited using a fully automated pupillometry system and six parameters were measured. Dopamine transporter imaging was performed using radioactive ioflupane (123)I-FP-CIT [(123)I-N-?-fluoropropyl-2?-carbomethoxy-3?-(4-iodophenyl)-nortropane]. A significant increase in latency and a significant decrease in amplitude, maximum constriction velocity, as well as maximum acceleration were observed in PD patients. There was no significant difference in initial radius and minimum radius values. Investigating the relationship between pupillometry parameters and (123)I-FP-CIT binding values, we correlated values from the semiquantitative analysis of radioligand uptake with pupillometry parameters, but we found no significant correlation. This study demonstrates PLR impairment in patients with PD without overt autonomic dysfunction. This impairment does not seem to correspond to the reduction of radioligand binding in the striatum as the result of presynaptic dopaminergic dysfunction, suggesting a different deterioration rate of these systems. PMID:21883027

Giza, Evangelia; Fotiou, Dimitrios; Bostantjopoulou, Sevasti; Katsarou, Zoe; Gerasimou, George; Gotzamani-Psarrakou, Anna; Karlovasitou, Anna

2012-01-01

435

Jump, scrape, break the switches Coast low wit da bitches  

E-print Network

, comet Galaxy, el camino Chevelle, caprice Monte carlo So low six fo' How low can you go, caprice Monte carlo So low six fo' How low can you go? Tweezer, teaser, tiger weezer Rusty, crusty, skuzzy, seek the geek Pump da bass in yo' face Contrabasso How low can you go? Belladonna, mescaline

Reiners, Peter W.

436

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

437

Galapagos sharks (Carcharhinus galapagensis) at the Bassas da  

E-print Network

Galapagos sharks (Carcharhinus galapagensis) at the Bassas da India atoll: first record from Introduction The Galapagos shark, Carcharhinus galapagensis,1 is circum- tropical in its distribution; however and species identification During October 2003, a shark diversity survey was conducted at several locations

Miami, University of

438

BENJAMIN FRANKLIN E A HISTÓRIA DA ELETRICIDADE EM LIVROS DIDÁTICOS  

Microsoft Academic Search

Introdução Nos últimos anos, a história da ciência vem sendo introduzida em materiais didáticos utilizados em sala de aula. Uma das razões para isso é a pressão de órgãos governamentais, tais como a Secretaria de Educação Básica, responsável pela avaliação destes livros dentro do Programa Nacional de Livros Didáticos para o ens ino fundamental e médio. Os editais destes programas

Cibelle Celestino Silva; Ana Carolina Pimentel

439

ISSN 0103-9741 Monografias em Cincia da Computao  

E-print Network

que líderes acadêmi- cos devem tratar a necessidade de uma maior diversidade no corpo docente e no perfil de alunos de seus programas acadêmicos para reverter o declínio da procura pela área. Jovens com

Endler, Markus

440

UNIVERSIDADE FEDERAL DE SANTA CATARINA CENTRO DE CINCIAS DA EDUCAO  

E-print Network

leituras, estudos e debates te�ricos, h� quatro componentes pr�ticos: 1) experienciar a pr�pria aprendizagem em rede, na web 2.0 ou ambiente virtual, com conte�dos da pr�pria disciplina; 2) a produ

Floeter, Sergio Ricardo

441

Children's School January 2012 Family Spotlight: Rooted in "Da Burgh"  

E-print Network

Children's School January 2012 Family Spotlight: Rooted in "Da Burgh" Bob Slammon and Amy Williams places: Chicago, Buffalo, Bennington, New York City, Boston. We love Pittsburgh, with its vibrant, and we have met so many wonderful people since we moved here. As we've heard many other Children's School

442

A SUSTENTABILIDADE DAS RESERVAS EXTRATIVISTAS PELA PERSPECTIVA DA ECONOMIA ECOLÓGICA  

Microsoft Academic Search

As Reservas Extrativistas (RESEX) são áreas de domínio público, com uso concedido às populações extrativistas tradicionais, cuja subsistência baseia-se no extrativismo e na agricultura de subsistência e na criação de animais de pequeno porte, e têm como objetivos básicos proteger os meios de vida e a cultura dessas populações, e assegurar o uso sustentável dos recursos naturais da unidade. Porém,

Francisco Carlos Da Silveira Cavalcanti; Raimundo Claudio Gomes Maciel; Joao Alfredo De Carvalho Mangabeira; Bastiaan Philip Reydon

2008-01-01

443

Custo da Água nos Pequenos Regadios Individuais do Alentejo  

Microsoft Academic Search

Os pequenos regadios individuais do Alentejo ? PRIA ? representam actualmente uma área bastante superior aos designados regadios colectivos, ou estatais, construídos pelo Estado até aos princípios da década de 70. Estes regadios, são alimentados a partir de fontes de água privadas (barragens, charcas e\\/ou furos) e são, na sua quase totalidade, regados por métodos de rega sob pressão (aspersão

António Cipriano Pinheiro; Isaurindo Oliveira

2010-01-01

444

MINISTRIO DA EDUCAO MEC Secretaria de Educao Superior SESu  

E-print Network

POLÍTICAS PARA AS MULHERES EDITAL Nº 02 PROGRAMA DE EXTENS�O UNIVERSITÁRIA PROEXT 2013 ­ MEC/SESu A União Humanos, Secretaria de Políticas de Promoção da Igualdade Racial, Secretaria de Políticas para as Mulheres

Paraná, Universidade Federal do

445

Monitorização eletroencefalográfica ambulatorial na epilepsia de difícil controle da infância  

Microsoft Academic Search

RESUMO - O objetivo deste estudo foi analisar através da monitorização eletroencefalográfica ambulatorial contínua e prolongada a distribuição temporal de descargas paroxísticas em sono e em vigília de crianças e adolescentes com epilepsia de difícil controle medicamentoso. Foram selecionadas 21 pacientes na faixa etária de 4 a 17 anos de idade com epilepsia de difícil controle medicamentoso, sendo 52,3 %

Sueli Rizzutti; Mauro Muszkat; Carlos José Reis de Campos

2001-01-01

446

Programa Intensivo de Lngua Portuguesa e Cultura Brasileira da UFMG  

E-print Network

Programa Intensivo de Língua Portuguesa e Cultura Brasileira da UFMG Intensive Program no exterior, interessados em aperfeiçoar seus conhecimentos de Língua Portuguesa e Cultura Brasileira. O curso cultura", das autoras: Regina Lúcia Péret Dell'Isola e Maria José Apparecida de Almeida - Editora: UFMG

Chaimowicz, Luiz

447

Antnio Manuel Cruz Serra, reitor da Universidade de Lisboa, reconhece a importncia do Concurso Nacional de Inovao  

E-print Network

;ENTREVISTA A ANT�NIO MANUEL CRUZ SERRA | Reitor da Universidade de Lisboa "A responsabilidade social assumida��o da sociedade civil perante a import�ncia da comuni- dade cient�fica para o desenvolvimento de uma

Instituto de Sistemas e Robotica

448

Systems and Components Fuel Delivery System, Water Delivery System, ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

Systems and Components - Fuel Delivery System, Water Delivery System, Derrick Crane System, and Crane System Details - Marshall Space Flight Center, F-1 Engine Static Test Stand, On Route 565 between Huntsville and Decatur , Huntsville, Madison County, AL

449

Estabelecimento do Conceito de Temperatura como uma grandeza derivada da Energia e da Entropia  

E-print Network

Temperature is introduced as a derived concept from energy and entropy. We consider two sub-systems in equilibrium for several configurations. The equality of temperature of the sub-systems is obtained from the equilibrium condition. The isothermal transformation is defined for several configurations and from this definition we obtain the Clausius-Clapeyron equation. We apply the analysis to the ideal gas. The classical ideal gas appears as a limit and the problem of the measurement of temperature is analysed.

Rodrigo de Abreu

2002-12-12

450

Estabelecimento do Conceito de Temperatura como uma grandeza derivada da Energia e da Entropia  

E-print Network

Temperature is introduced as a derived concept from energy and entropy. We consider two sub-systems in equilibrium for several configurations. The equality of temperature of the sub-systems is obtained from the equilibrium condition. The isothermal transformation is defined for several configurations and from this definition we obtain the Clausius-Clapeyron equation. We apply the analysis to the ideal gas. The classical ideal gas appears as a limit and the problem of the measurement of temperature is analysed.

De Abreu, R

2002-01-01

451

Respiratory System  

NSDL National Science Digital Library

The purpose, components, and functions of the respiratory system are presented in this learning through disussion and visualizations. Participants learn about the nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, and alveoli.

Bidlack, Jim

452

Respiratory system  

NASA Technical Reports Server (NTRS)

The general anatomy and function of the human respiratory system is summarized. Breathing movements, control of breathing, lung volumes and capacities, mechanical relations, and factors relevant to respiratory support and equipment design are discussed.

Bartlett, R. G., Jr.

1973-01-01

453

Digestive System  

MedlinePLUS

... of the immune system to a protein called gluten, which is found in wheat, rye, and barley ... and even depression when they eat foods with gluten. Symptoms can be managed by following a gluten- ...

454

Digestive System  

MedlinePLUS

... of the immune system to a protein called gluten, which is found in certain foods. People with ... nutrients from their food because eating things with gluten damages the lining of the intestines over time. ...

455

Systems Vaccinology  

PubMed Central

Vaccination is one of the greatest triumphs of modern medicine, yet we remain largely ignorant of the mechanisms by which successful vaccines stimulate protective immunity. Two recent advances are beginning to illuminate such mechanisms: realization of the pivotal role of the innate immune system in sensing microbes and stimulating adaptive immunity, and advances in systems biology. Recent studies have used systems biology approaches to obtain a global picture of the immune responses to vaccination in humans. This has enabled the identification of early innate signatures that predict the immunogenicity of vaccines, and identification of potentially novel mechanisms of immune regulation. Here we review these advances, and critically examine the potential opportunities and challenges posed by systems biology in vaccine development. PMID:21029962

Pulendran, Bali; Li, Shuzhao; Nakaya, Helder I

2010-01-01

456

Earth Systems  

NSDL National Science Digital Library

This self-contained module on Earth systems includes a range of fun activities that students can perform in the classroom and at home with family members. They impart important concepts such as observation, identification, measurement, and differentiation.

Science, Houghton M.

457

Fueling systems  

SciTech Connect

This report deals with concepts of the Tiber II tokamak reactor fueling systems. Contained in this report are the fuel injection requirement data, startup fueling requirements, intermediate range fueling requirements, power range fueling requirements and research and development considerations. (LSR)

Gorker, G.E.

1987-01-01

458

Microelectromechanical Systems  

NASA Technical Reports Server (NTRS)

Micro-electromechanical systems (MEMS) is an enabling technology that merges computation and communication with sensing and actuation to change the way people and machines interact with the physical world. MEMS is a manufacturing technology that will impact widespread applications including: miniature inertial measurement measurement units for competent munitions and personal navigation; distributed unattended sensors; mass data storage devices; miniature analytical instruments; embedded pressure sensors; non-invasive biomedical sensors; fiber-optics components and networks; distributed aerodynamic control; and on-demand structural strength. The long term goal of ARPA's MEMS program is to merge information processing with sensing and actuation to realize new systems and strategies for both perceiving and controlling systems, processes, and the environment. The MEMS program has three major thrusts: advanced devices and processes, system design, and infrastructure.

Gabriel, Kaigham J.

1995-01-01

459

Immune System  

MedlinePLUS

... New Scientists Identify Important Genetic Changes in 21 Autoimmune Diseases —Oct. 29, 2014 New Regulator of Autoimmune Cells ... 26, 2014 All Immune System News Releases All Autoimmune Diseases News Releases All Primary Immune Deficiency Disease News ...

460

Systemic Mastocytosis  

Microsoft Academic Search

Mastocytosis is a term used for a group of disorders defined by an abnormal accumulation of mast cells (MCs) in one or more\\u000a organ systems. Clinical symptoms result from MC-derived mediators and\\/or from infiltration of MCs in the tissues. Cutaneous\\u000a mastocytosis (CM) is a benign disease of the skin and often regresses spontaneously. Systemic mastocytosis (SM) is a persistent\\u000a clonal

Peter Valent

461

Mechanical Systems  

Microsoft Academic Search

\\u000a In this chapter, several different control applications for mechanical systems are examined. The first system discussed is\\u000a an autobalancing application. A perfectly balanced rotating object (i.e., the center of geometry and center of mass are coincident)\\u000a will usually not undergo any vibration. However, due to the errors associated with geometric dimensions and the nonhomogeneity\\u000a of the raw material, the construction

Warren E. Dixon; Aman Behal; Darren M. Dawson; Siddharth P. Nagarkatti

462

Digestive System  

NSDL National Science Digital Library

The digestive system is amazing: it takes the foods we eat and breaks them into smaller components that our bodies can use for energy, cell repair and growth. This lesson introduces students to the main parts of the digestive system and how they interact. In addition, students learn about some of the challenges astronauts face when eating in outer space. Engineers figure out how to deal with such challenges.

Integrated Teaching And Learning Program

463

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

464

Thiolated chitosan: development and in vitro evaluation of an oral delivery system for acyclovir.  

PubMed

The aim of the study was to develop a novel oral delivery system for the efflux pump substrate acyclovir (ACY) utilizing thiolated chitosan as excipient which is capable of inhibiting P-glycoprotein (P-gp). Three chitosan-4-thiobutylamidine (Chito-TBA) conjugates with increasing molecular mass (Chito-9.4kDa-TBA, Chito-150kDa-TBA and Chito-600kDa-TBA) were synthesized and permeation studies on rat intestinal mucosa and Caco-2 monolayers were performed. Additionally, tablets comprising the conjugates and ACY were tested towards their drug release behaviour. The efflux ratio (secretory P(app)/absorptive P(app)) of ACY across Caco-2 monolayers was determined to be 2.5 and in presence of 100microM verapamil 1.1 which indicates ACY as P-gp substrate. In comparison to buffer only, the transport of ACY in presence of 0.5% (m/v) unmodified chitosan, 0.5% (m/v) Chito-150kDa-TBA and 0.5% (m/v) Chito-150kDa-TBA with 0.5% (m/v) reduced glutathione (GSH), was 1.3-, 1.6- and 2.1-fold improved, respectively. Transport studies across Caco-2 monolayers showed that P-gp inhibition is dependent on the average molecular mass of thiolated chitosan showing following rank order: 0.5% (m/v) Chito-150kDa-TBA/GSH>0.5% (m/v) Chito-9.4kDa-TBA/GSH>0.5% (m/v) Chito-600kDa-TBA/GSH. The higher the molecular mass of Chito-TBA was, the more sustained was the release of ACY. Chito-150kDa-TBA/GSH might be an appropriate sustained release drug delivery system for ACY, which is able to enhance ACY transport due to efflux pump inhibition. PMID:17716840

Palmberger, Thomas F; Hombach, Juliane; Bernkop-Schnürch, Andreas

2008-02-01

465

Regulamenta os procedimentos para a alocao de vagas docentes de Magistrio Superior da  

E-print Network

REGIME DE TRABALHO #12;Art. 2º O perfil docente da UFRJ deve alcançar e manter, pelo menos, 8o% de contratação de professores assistentes em regime de 20 horas, desde que o perfil docente da UFRJ resultante daRegulamenta os procedimentos para a alocação de vagas docentes de Magistério Superior da

Liu, I-Shih

466

Intramembrane translocation and posttranslational palmitoylation of the chloroplast 32-kDa herbicide-binding protein  

Microsoft Academic Search

The 32-kDa herbicide-binding protein, a component of photosystem II, is synthesized as a membrane-associated 33.5-kDa precursor within the chloroplast. We show that membrane attachment of the precursor and processing to the 32-kDa form occur in the unstacked stromal lamellae. Once processed, the 32-kDa protein translocates, within the thylakoids, to the topologically distinct stacked granal lamellae. Posttranslational palmitoylation of the processed

A. K. Mattoo; M. Edelman

1987-01-01

467

Projet DaFOE4App DIFFERENTIAL AND FORMAL ONTOLOGIES EDITOR FOR APPLICATIONS  

E-print Network

Projet DaFOE4App DIFFERENTIAL AND FORMAL ONTOLOGIES EDITOR FOR APPLICATIONS Dossier A.1 / Document. Charlet (INSERM - UMR_S 872, Equipe 20) hal-00713708,version1-2Jul2012 #12;Projet DaFOE4App DaFOE4App,version1-2Jul2012 #12;Projet DaFOE4App Table des matières 1 Spécifications générales 9 1 Description des

Paris-Sud XI, Université de

468

Global stability of the attracting set of an enzyme-catalysed reaction system  

E-print Network

, DD1 4HN, U.K. #3; Soil-Plant Dynamics Unit, Scottish Crop Research Institute, Dundee, DD2 5DA, U maximum enzyme activities. In particular, we show that the system exhibits three distinct responses. Therefore the continued metabolic viability of such systems is dependent on the formation of bounded

Davidson, Fordyce A.

469

FIT 2005 Preliminary Version Some Models and Tools for Open Systems  

E-print Network

of recent works [dA03,dAH04], de Alfaro et al. argue that games constitute a more natural model for open in the traditional verification of closed systems. Games generalize transition systems by providing a model correspond to the choices available to that source. In particular, two­players games constitute an expressive

Faella, Marco

470

Cloning and characterization of a 77-kDa oestrogen receptor isolated from a human breast cancer cell line.  

PubMed Central

We have cloned and characterized a 77-kDa oestrogen receptor (ER) from an oestrogen-independent subclone of the MCF-7 human breast cancer cell line. This receptor contains an in-frame, tandem duplication of exons 6 and 7, located in the steroid-binding domain of the ER. This mutation has abrogated ligand binding, but not DNA binding, in this mutant ER. We previously described the partial structure of a unique oestrogen receptor (ER) that is expressed in an oestrogen-independent MCF-7:2A subclone of the breast cancer cell line MCF-7 (Pink JJ, Wu SQ, Wolf DM, Bilimoria MM, Jordan VC 1996a, Nucleic Acids Res 24 962-969). Sequence analyses determined the molecular weight of this 80-kDa ER to be 77 kDa, and hereafter this protein will be designated as ER77. Examination of the entire coding sequence of the ER77 mRNA indicates that it contains a tandem duplication of exons 6 and 7. Using a coupled transcription/translation system, a 77-kDa ER, which corresponds to the protein observed in the MCF-7:2A cells, was expressed. The ER77 protein does not bind the ligands [3H] oestradiol or [3H]tamoxifen aziridine. In DNA binding gel shift assays, the in vitro synthesized ER77 binds to a consensus vitellogenin A2 oestrogen-response element. In transient transfection experiments, the mutant ER, alone or in combination with the wild-type ER, does not induce expression of an oestrogen-responsive luciferase reporter construct. In fact, expression of the ER77 in the ER-positive T47D:A18 cell line inhibits E2-induced luciferase expression. Overexpression of wild-type ER in T47D:A18 cells leads to elevated constitutive expression of the luciferase reporter, which was inhibited by co-transfection with ER77. These data suggest that the ER77 can interfere with normal ER activity and does not act as a constitutive activator of oestrogen-independent growth in MCF-7:2A cells. Consequently, the constitutive growth observed in MCF-7:2A cells is probably the result of other ER-mediated pathways. Images Figure 2 Figure 3 Figure 4 Figure 5 PMID:9000593

Pink, J. J.; Fritsch, M.; Bilimoria, M. M.; Assikis, V. J.; Jordan, V. C.

1997-01-01

471

75 FR 75868 - Airworthiness Directives; Diamond Aircraft Industries GmbH Models DA 40 and DA 40F Airplanes  

Federal Register 2010, 2011, 2012, 2013

...42 has the same door design and the same unsafe condition...departing the Model DA 42 aircraft in flight with ACG...after January 11, Aircraft Industries 40.011 through...with an improved Diamond Aircraft design retaining bracket....

2010-12-07

472

Avaliação da implantação da Resolução n. 307\\/2002 do CONAMA sobre gerenciamento dos resíduos de construção civil  

Microsoft Academic Search

O gerenciamento da crescente massa de resíduos sólidos gerados é um dos principais problemas do mundo atual, considerando os riscos de esgotamento dos recursos naturais e os impactos ao meio ambiente e à saúde pública. Neste c ontexto, este trabalho apresenta o panorama das construtoras em relação ao gerenciamento de seus resíduos sólidos, com o objetivo de analisar o efeito

Silvia Paixão Linhares; João Alberto Ferreira; Elisabeth Ritter

473

The binary Feige 24 - The mass, radius, and gravitational redshift of the DA white dwarf  

NASA Technical Reports Server (NTRS)

Observations are reported which refine the binary ephemeris of the Feige 24 system, which contains a peculiar hot DA white dwarf and an M dwarf with an atmosphere illuminated by extreme ultraviolet radiation from the white dwarf. With the new ephemeris and a set of IUE high-dispersion spectra, showing phase-dependent redshifted C IV, N V, and Si IV resonance lines, the orbital velocity, and hence the mass (0.54 + or - 0.20 solar masses), and the gravitational redshift of the white dwarf (14.1 + or - 5.2 km/s) are determined independently. It is shown that the measured Einstein redshift is consistent with an estimated radius for the white dwarf obtained from a model atmosphere solid angle and a parallax measurement. This radius is twice the Hamada-Salpeter radius for the given mass and offers a prospect to investigate the presence of a massive hydrogen envelope in that white dwarf star.

Vennes, Stephane; Shipman, Harry L.; Thorstensen, John R.; Thejll, Peter

1991-01-01

474

THE KEPLER LIGHT CURVE OF THE UNIQUE DA WHITE DWARF BOKS 53856  

SciTech Connect

The faint (g = 16.9) hot white dwarf BOKS 53856 was observed by the Kepler Mission in short cadence mode during mid-2009. Analysis of these observations reveals a highly stable modulation with a period of 6.1375 hr and a 2.46% half-amplitude. The folded light curve has an unusual shape that is difficult to explain in terms of a binary system containing an unseen companion more luminous than an L0 brown dwarf. Optical spectra of BOKS 53856 show a T{sub eff} = 34,000 K, log g = 8.0 DA white dwarf. There are few, if any, known white dwarfs in this temperature range exhibiting photometric variations similar to those we describe. A magnetic spin-modulated white dwarf model can in principle explain the light curve, an interpretation supported by spectral observations of the H{alpha} line showing evidence of Zeeman splitting.

Holberg, J. B. [Lunar and Planetary Laboratory, 1541 E. University Blvd, Sonett Space Sciences Building, University of Arizona, Tucson, AZ 85721 (United States); Howell, Steve B., E-mail: holberg@argus.lpl.arizona.edu, E-mail: howell@noao.edu [National Optical Astronomy Observatory, 950 N. Cherry Ave, Tucson, AZ 85719 (United States)

2011-08-15

475

ECRH System For ITER  

NASA Astrophysics Data System (ADS)

A 26 MW Electron Cyclotron Heating and Current Drive (EC H&CD) system is to be installed for ITER. The main objectives are to provide, start-up assist, central H&CD and control of MHD activity. These are achieved by a combination of two types of launchers, one located in an equatorial port and the second type in four upper ports. The physics applications are partitioned between the two launchers, based on the deposition location and driven current profiles. The equatorial launcher (EL) will access from the plasma axis to mid radius with a relatively broad profile useful for central heating and current drive applications, while the upper launchers (ULs) will access roughly the outer half of the plasma radius with a very narrow peaked profile for the control of the Neoclassical Tearing Modes (NTM) and sawtooth oscillations. The EC power can be switched between launchers on a time scale as needed by the immediate physics requirements. A revision of all injection angles of all launchers is under consideration for increased EC physics capabilities while relaxing the engineering constraints of both the EL and ULs. A series of design reviews are being planned with the five parties (EU, IN, JA, RF, US) procuring the EC system, the EC community and ITER Organization (IO). The review meetings qualify the design and provide an environment for enhancing performances while reducing costs, simplifying interfaces, predicting technology upgrades and commercial availability. In parallel, the test programs for critical components are being supported by IO and performed by the Domestic Agencies (DAs) for minimizing risks. The wide participation of the DAs provides a broad representation from the EC community, with the aim of collecting all expertise in guiding the EC system optimization. Still a strong relationship between IO and the DA is essential for optimizing the design of the EC system and for the installation and commissioning of all ex-vessel components when several teams from several DAs will be involved together in the tests on the ITER site.

Darbos, C.; Henderson, M.; Albajar, F.; Bigelow, T.; Bomcelli, T.; Chavan, R.; Denisov, G.; Farina, D.; Gandini, F.; Heidinger, R.; Goodman, T.; Hogge, J. P.; Kajiwara, K.; Kasugai, A.; Kern, S.; Kobayashi, N.; Oda, Y.; Ramponi, G.; Rao, S. L.; Rasmussen, D.; Rzesnicki, T.; Saibene, G.; Sakamoto, K.; Sauter, O.; Scherer, T.; Strauss, D.; Takahashi, K.; Zohm, H.

2009-11-01

476

ECRH System For ITER  

SciTech Connect

A 26 MW Electron Cyclotron Heating and Current Drive (EC H and CD) system is to be installed for ITER. The main objectives are to provide, start-up assist, central H and CD and control of MHD activity. These are achieved by a combination of two types of launchers, one located in an equatorial port and the second type in four upper ports. The physics applications are partitioned between the two launchers, based on the deposition location and driven current profiles. The equatorial launcher (EL) will access from the plasma axis to mid radius with a relatively broad profile useful for central heating and current drive applications, while the upper launchers (ULs) will access roughly the outer half of the plasma radius with a very narrow peaked profile for the control of the Neoclassical Tearing Modes (NTM) and sawtooth oscillations. The EC power can be switched between launchers on a time scale as needed by the immediate physics requirements. A revision of all injection angles of all launchers is under consideration for increased EC physics capabilities while relaxing the engineering constraints of both the EL and ULs. A series of design reviews are being planned with the five parties (EU, IN, JA, RF, US) procuring the EC system, the EC community and ITER Organization (IO). The review meetings qualify the design and provide an environment for enhancing performances while reducing costs, simplifying interfaces, predicting technology upgrades and commercial availability. In parallel, the test programs for critical components are being supported by IO and performed by the Domestic Agencies (DAs) for minimizing risks. The wide participation of the DAs provides a broad representation from the EC community, with the aim of collecting all expertise in guiding the EC system optimization. Still a strong relationship between IO and the DA is essential for optimizing the design of the EC system and for the installation and commissioning of all ex-vessel components when several teams from several DAs will be involved together in the tests on the ITER site.

Darbos, C.; Henderson, M.; Gandini, F. [JTER Organization, 13067 Saint Paul-Lez-Durance cedex (France); Albajar, F.; Bomcelli, T.; Heidinger, R.; Saibene, G. [Fusion for Energy, C/Josep Pla 2, Torres Diagonal Litoral-B3, E-08019 Barcelona-Spain (Spain); Bigelow, T.; Rasmussen, D. [US ITER Project Office, Oak Ridge National Laboratory, 055 Commerce Park, PO Box 2008, Oak Ridge, TN 37831-6483 (United States); Chavan, R.; Goodman, T.; Hogge, J. P.; Sauter, O. [Association EURATOM-Confederation Suisse, EPFL Ecublens, CH-1015 Lausanne (Switzerland); Denisov, G. [Institute of Applied Physics Russian Academy of Sciences, 46 Ulyanov Street, Nizhny Novgorod, 603950 (Russian Federation); Farina, D. [Istitutodi Fisica del Plasma, Association EURATOM-ENEA-CNR, Milano (Italy); Kajiwara, K.; Kasugai, A.; Kobayashi, N.; Oda, Y.; Ramponi, G. [Japan Atomic Energy Agency (JAEA) 801-1 Mukoyama, Naka-shi, Ibaraki 311-0193 (Japan)] (and others)

2009-11-26

477

EFICÁCIA DE TRÊS MEDICAMENTOS NO CONTROLE DA INFECÇÃO EXPERIMENTAL POR TRYPANOSOMA EVANSI EM RATOS (RATTUS NORVEGICUS) LINHAGEM WISTAR.  

E-print Network

??Este trabalho objetivou verificar os achados laboratoriais e histológicos da infecção experimental por Trypanosoma (Trypanozoon) evansi (Steel, 1885) Balbiani, 1888, em ratos (Rattus norvegicus) da… (more)

Rovaina Laureano Doyle

2006-01-01

478

Mtodo e loucura da teorizao em psicanlise: a busca de figurabilidade  

E-print Network

enunciação surgirá através da metáfora. Numa isotopia entre cura e escrita analítica, a metáfora permitirá da primeira teorização da formação nebulosa do sistema solar entrasse, aos 56 anos, numa fase

479

Energy Consumption Tools Pack Leandro Fontoura Cupertino, Georges DaCosta,  

E-print Network

, L. F., DaCosta, G., Sayah, A., and Pierson, J.-M. Valgreen: an Applications Energy Profiler. SCSEEnergy Consumption Tools Pack Leandro Fontoura Cupertino, Georges DaCosta, Amal Sayah, Jean) GreenDays @ Luxembourg ­ January 28-29th 2013 Cupertino, DaCosta, Sayah, Pierson (IRIT) Energy

Lefèvre, Laurent

480

76 FR 31457 - Airworthiness Directives; Diamond Aircraft Industries GmbH Model DA 42 Airplanes  

Federal Register 2010, 2011, 2012, 2013

...Diamond Aircraft Industries GmbH Model DA 42 Airplanes AGENCY: Federal Aviation Administration...Cracks have been reportedly found on DA 42 Main Landing Gear (MLG) Damper-to-Trailing...Cracks have been reportedly found on DA 42 Main Landing Gear (MLG)...

2011-06-01

481

76 FR 14346 - Airworthiness Directives; Diamond Aircraft Industries GmbH Model DA 42 Airplanes  

Federal Register 2010, 2011, 2012, 2013

...Diamond Aircraft Industries GmbH Model DA 42 Airplanes AGENCY: Federal Aviation Administration...Cracks have been reportedly found on DA 42 Main Landing Gear (MLG) Damper-to-Trailing...Cracks have been reportedly found on DA 42 Main Landing Gear (MLG)...

2011-03-16

482

Revista da Biologia www.ib.usp.br/revista ISSN 1984-5154 Sumrio _____________________________ Volume 5  

E-print Network

ANAPIREXIA Carolina da Silveira Scarpellini e Kênia Cardoso Bícego 7 MODELOS COMPUTACIONAIS APLICADOS � Cheixas-Dias Carlos Eduardo Amancio Daiane Gil Franco Danilo Flores Evelyn Loures de Godoi Gustavo Requena 1 REGULA��O DA TEMPERATURA CORPORAL EM DIFERENTES ESTADOS T�RMICOS: �NFASE NA ANAPIREXIA Carolina da

Morandini, Andre C.

483

EMPODERAMENTO DA ASSOCIAÇÃO DE MÃES OURO VERDE NO MUNICÍPIO DE ALTA FLORESTA-MT  

Microsoft Academic Search

4 Prof. Eng. Agrônomo M.Sc. UNEMAT. RESUMO - O princípio do associativism o foi a maneira encontrada pelas mulheres da comunidade Ouro Verde no município de Alta Floresta - MT para promover o espírito da governança pela união para tomada de decisões na busca do bem estar das famílias rurais por intermédio da promoção de eventos comunitários e criação de

DELMONTE ROBOREDO; TATIANE CARINE DE OLIVEIRA; DO NASCIMENTO; DANIELA FERNANDA CAVALLI; CASSIANO GARCIA ROQUE

484

In vivo breakdown products of the 32 kDa thylakoid herbicide binding protein. [Spirodela oligorrhiza  

SciTech Connect

The 32 kDa herbicide binding protein of PSII is degraded rapidly in the light. This phenomenon was investigated in Spirodela oligorrhiza. When fronds were radiolabeled in the presence of cycloheximide only the chloroplast-encoded proteins were labeled. Under these conditions, a breakdown product of 23.5 kDa was observed. This polypeptide was further degraded with kinetics similar to that of the 32 kDa protein. The 23.5 kDa polypeptide cross-reacted with an antibody specific to the 32 kDa protein. By protease digestion it was determined that the 23.5 kDa polypeptide is the intact N-terminal piece of the 32 kDa protein. Thus, this product corresponds to the membrane anchor of the 32 kDa protein. Using the same antibody, breakdown products of 16 kDa, 14 kDa and 12 kDa were observed. These products have also been observed in Zea mays and Solanum nigrum. Using DCMU during pulse-chase experiments at different light intensities, evidence was obtained that the 23.5 kDa breakdown product is generated in vivo.

Greenberg, B.M.; Mattoo, A.K.; Gaba, V.; Edelman, M.

1986-04-01

485

PREVISÃO DA VAZÃO AFLUENTE MENSAL DO RIO SÃO FRANCISCO USANDO-SE REDES DE ELMAN  

Microsoft Academic Search

Resumo: Este artigo apresenta resultados de previsão da vazão afluente mensal do Rio São Francisco, que alimenta a usina de Sobradinho, usando-se redes neurais de Elman (RNA). As redes neurais de Elman utilizadas foram preparadas com o objetivo de receber como entrada amostras da série temporal da vazão afluente do Rio São Francisco deslocadas mês a mês. Para tal, nas

Luiz Biondi Neto; Pedro Henrique Gouvêa Coelho; Luís Chiganer; Lídia Angulo Meza; Luiz Palmeira Monteiro

2005-01-01

486

40 CFR 60.43Da - Standard for sulfur dioxide (SO2).  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Standard for sulfur dioxide (SO2). 60.43Da Section 60.43Da...1978 § 60.43Da Standard for sulfur dioxide (SO2). (a) On and after...on a 24-hour basis. (d) Sulfur dioxide emissions are limited to 520...

2011-07-01

487

40 CFR 60.43Da - Standards for sulfur dioxide (SO2).  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Standards for sulfur dioxide (SO2). 60.43Da Section 60.43Da...Units § 60.43Da Standards for sulfur dioxide (SO2 ). (a) On and after...on a 24-hour basis. (d) Sulfur dioxide emissions are limited to 520...

2013-07-01

488

40 CFR 60.43Da - Standards for sulfur dioxide (SO2).  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Standards for sulfur dioxide (SO2). 60.43Da Section 60.43Da...Units § 60.43Da Standards for sulfur dioxide (SO2 ). (a) On and after...on a 24-hour basis. (d) Sulfur dioxide emissions are limited to 520...

2012-07-01

489

40 CFR 60.43Da - Standard for sulfur dioxide (SO2).  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Standard for sulfur dioxide (SO2). 60.43Da Section 60.43Da...1978 § 60.43Da Standard for sulfur dioxide (SO2). (a) On and after...on a 24-hour basis. (d) Sulfur dioxide emissions are limited to 520...

2010-07-01

490

Systems Studies  

SciTech Connect

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, the Activity focused on existing bioenergy markets. Four projects were undertaken: a comparative analysis of bioenergy in Sweden and Austria; a one-day workshop on nontechnical barriers jointly supported by the Production Systems Activity; the development and testing of a framework for analyzing barriers and drivers to bioenergy markets; and surveys of wood pellet users in Sweden, Austria and the US. For the second objective, two projects were undertaken. First, the Activity worked with the Integrated BioEnergy Systems (TBS) Activity of TEA Bioenergy Task XIII to enhance the BioEnergy Assessment Model (BEAM). This model is documented in the final report of the IBS Activity. The Systems Studies Activity contributed to enhancing the feedstock portion of the model by developing a coherent set of willow, poplar, and switchgrass production modules relevant to both the US and the UK. The Activity also developed a pretreatment module for switchgrass. Second, the Activity sponsored a three-day workshop on modeling bioenergy systems with the objectives of providing an overview of the types of models used to evaluate bioenergy and promoting communication among bioenergy modelers. There were nine guest speakers addressing different types of models used to evaluate different aspects of bioenergy, ranging from technoeconomic models based on the ASPEN software to linear programming models to develop feedstock supply curves for the US. The papers from this workshop have been submitted to Biomass and Bioenergy and are under editorial review.

Graham, R.L.

1998-03-17

491

The roles of serine protease, intracellular and extracellular phenoloxidase in activation of prophenoloxidase system, and characterization of phenoloxidase from shrimp haemocytes induced by lipopolysaccharide or dopamine  

NASA Astrophysics Data System (ADS)

We investigated the effects of lipopolysaccharide (LPS) and dopamine (DA) on the activation of the prophenoloxidase (proPO) system of Litopenaeus vannamei. LPS and DA were shown with a negative dose-dependent effect on hyalne cells (HC), semi-granular cells (SGC), large granular cells (LGC), and total haemocyte count (THC). When haemocytes were treated with LPS or DA, serine proteinase activity and intracellular phenoloxidase (PO) activity were significantly reduced, but extracellular PO activity increased significantly. These findings indicated that the reduction in haemocyte counts was mainly because of the degranulation and activation of the proPO system from semi-granule and large granule cells. The PKC inhibitor, chelerythrine, and the TPK inhibitor, genistein, had an inhibitory effect on extracellular PO activity, while serine proteinase and intracellular PO activity increased. This suggests that the LPS and DA induce the activation of proPO in haemocytes via PKC and TPK-related signaling pathways, but serine proteinase may be activated only by PKC, as the genistein effects were not statistically significant. Electrophoresis analysis revealed that POs induced by LPS or DA have the same molecular mass and high diphenolase activity. Two PO bands at 526 kDa and 272 kDa were observed in PAGE, while in the haemocyte lysate supernatant (HLS), only a 272-kDa band was observed. This band was resolved after SDS-PAGE under non-reducing and reducing conditions into two groups of POs, 166 kDa and 126 kDa, and 78.1 kDa and 73.6 kDa, respectively, suggesting that PO in L. vannamei is an oligomer, which may have different compositions intra- and extracellularly.

Xie, Peng; Pan, Luqing; Xu, Wujie; Yue, Feng

2013-09-01

492

Systemic trauma.  

PubMed

Substantial theoretical, empirical, and clinical work examines trauma as it relates to individual victims and perpetrators. As trauma professionals, it is necessary to acknowledge facets of institutions, cultures, and communities that contribute to trauma and subsequent outcomes. Systemic trauma-contextual features of environments and institutions that give rise to trauma, maintain it, and impact posttraumatic responses-provides a framework for considering the full range of traumatic phenomena. The current issue of the Journal of Trauma & Dissociation is composed of articles that incorporate systemic approaches to trauma. This perspective extends conceptualizations of trauma to consider the influence of environments such as schools and universities, churches and other religious institutions, the military, workplace settings, hospitals, jails, and prisons; agencies and systems such as police, foster care, immigration, federal assistance, disaster management, and the media; conflicts involving war, torture, terrorism, and refugees; dynamics of racism, sexism, discrimination, bullying, and homophobia; and issues pertaining to conceptualizations, measurement, methodology, teaching, and intervention. Although it may be challenging to expand psychological and psychiatric paradigms of trauma, a systemic trauma perspective is necessary on both scientific and ethical grounds. Furthermore, a systemic trauma perspective reflects current approaches in the fields of global health, nursing, social work, and human rights. Empirical investigations and intervention science informed by this paradigm have the potential to advance scientific inquiry, lower the incidence of a broader range of traumatic experiences, and help to alleviate personal and societal suffering. PMID:24617751

Goldsmith, Rachel E; Martin, Christina Gamache; Smith, Carly Parnitzke

2014-01-01

493

O comportamento da ionosfera monitorado no ROI atravs de: Sondagens VLF feitas com dois receptores distintos, um AWESOME da Universidade de Stanford e  

E-print Network

receptores distintos, um AWESOME da Universidade de Stanford e outro com SoftPal da Nova Zelândia (rede fevereiro de 2013 foi instalado um riômetro polarímetro em 38,2 MHz (foto a direita) em colaboração com Magnética. GPS: As sondagens de TEC e cintilação no ROI são feitas com um receptor da Novatel (4004B), que

494

Androgen Influence on Prefrontal Dopamine Systems in Adult Male Rats: Localization of Cognate Intracellular Receptors in Medial Prefrontal Projections to the Ventral Tegmental Area and Effects of Gonadectomy and Hormone Replacement on Glutamate-Stimulated Extracellular Dopamine Level  

PubMed Central

Although androgens are known to modulate dopamine (DA) systems and DA-dependent behaviors of the male prefrontal cortex (PFC), how this occurs remains unclear. Because relatively few ventral tegmental area (VTA) mesoprefrontal DA