Integrated assessment of chemical quality and genotoxicity of the water of the Luiz Rau Stream in the lower stretch of the Sinos River Basin, in South Brazil

Directory of Open Access Journals (Sweden)

Camila Tamires Petry

2016-11-01

Full Text Available This study assessed the chemical quality and genotoxicity of the water of the Luiz Rau Stream in Novo Hamburgo (Rio Grande do Sul, Brazil and investigated the relationship between the genetic damage observed in Tradescantia pallida var. purpurea and the chemical parameters analyzed. Water samplings were collected bimonthly from September 2012 to March 2013 from two sites, near the headspring (S1 and near the mouth (S2. Cuttings with flower buds were exposed to water from the sites and distilled water (negative control. Micronuclei (MCN frequencies were determined in pollen mother cells. The chemical parameters analyzed were pH, total dissolved solids, biochemical oxygen demand (DBO5, dissolved oxygen, total phosphorus (TP and the trace elements cadmium, lead, copper, total chromium and zinc. In all samplings, the MCN frequencies observed in buds exposed to water from both sites were significantly higher (S1: 2.48 to 3.38, S2: 3.24 to 5.19 than those observed in the respective negative controls (1.33 to 1.62. The TP was above the legal limit throughout the monitored period and DBO5 presented concentrations higher than those established by legislation in two months at S1 and three months at S2. The principal component analysis showed a relationship between MCN frequency, DBO5 and TP, pointing to the negative influence of pollutants present in water on the bioindicator species and reinforcing the importance of considering the environmental factors in an integrated way in water-body monitoring programs.

Analysis of control and management plane for hybrid fiber radio architectures

DEFF Research Database (Denmark)

Kardaras, Georgios; Pham, Tien Thang; Soler, José

2010-01-01

This paper presents the existing Radio over Fiber (RoF) architectures and focuses on the control and management plane of the Remote Antenna Unit (RAU). Broadband wireless standards, such as WiMAX and LTE, incorporate optical technologies following the distributed base station concept. The control...... and management of the RAU becomes a critical task, since it can facilitate allocation of resources, configuration and upgrade of the remote unit and constant monitoring of its performance. In the case of baseband over fiber, two protocols (OBSAI and CPRI) introduce a well-defined control and management plane....... In the case of intermediate/radio frequency over fiber, this paper presents a simple approach, which can provide configurability and real-time monitoring of the RAU over the same optical link. This is realized by multiplexing high frequency user data with baseband frequency control data at the Central Office...

Endangered Language Documentation and Transmission

Directory of Open Access Journals (Sweden)

D. Victoria Rau

2007-01-01

Full Text Available This paper describes an on-going project on digital archiving Yami language documentation (http://www.hrelp.org/grants/projects/index.php?projid=60. We present a cross-disciplinary approach, involving computer science and applied linguistics, to document the Yami language and prepare teaching materials. Our discussion begins with an introduction to an integrated framework for archiving, processing and developing learning materials for Yami (Yang and Rau 2005, followed by a historical account of Yami language teaching, from a grammatical syllabus (Dong and Rau 2000b to a communicative syllabus using a multimedia CD as a resource (Rau et al. 2005, to the development of interactive on-line learning based on the digital archiving project. We discuss the methods used and challenges of each stage of preparing Yami teaching materials, and present a proposal for rethinking pedagogical models for e-learning.

Perceptions of Regime Legitimacy in Mozambique: Legitimacy in Transition?

Science.gov (United States)

2006-09-01

West Africa Since Independence (Lagos: Lagos University Press, 1988) 170 . 52 James S. Wunsch and Dan Ottemoeller in Dele Olowu and James S. Wunsch...Ultramarina (RAU), aprovada pelo Decreto –Lei n. ˚23229, de 15 de Novembro de 1933. “Em cada uma das regedorias, a autoridade sobre as populações...2001. Artigo 94 da Reforma Adminsitrativa Ultramarina (RAU), aprovada pelo Decreto –Lei n. ˚23229, de 15 de Novembro de 1933. Ayittey, George B

LongoVital i forebyggelsen af recidiverende aftøs stomatit. 1

DEFF Research Database (Denmark)

Pedersen, A; Hougen, H P; Klausen, B

1991-01-01

LongoVital (LV) (DK. reg. no. 5178/75) is a herbal based tablet enriched with recommended doses of vitamins. The present study was undertaken to investigate prevention of recurrent aphthous ulceration (RAU) during daily intake of LV for six months as compared with placebo in a double-blind, rando......LongoVital (LV) (DK. reg. no. 5178/75) is a herbal based tablet enriched with recommended doses of vitamins. The present study was undertaken to investigate prevention of recurrent aphthous ulceration (RAU) during daily intake of LV for six months as compared with placebo in a double...

Percutaneous vertebroplasty with the rotational fluoroscopy imaging technique

Energy Technology Data Exchange (ETDEWEB)

Cannavale, Alessandro; Salvatori, Filippo Maria; Wlderk, Andrea; Cirelli, Carlo; D' Adamo, Alessandro; Fanelli, Fabrizio [University of Rome, Vascular and Interventional Unit, Department of Radiological Sciences, Rome (Italy)

2014-11-15

To evaluate the feasibility of the rotational angiography unit (RAU) as a single technique to guide percutaneous vertebroplasty (PVP). Twenty-five consecutive patients (35 vertebral bodies, 20 lumbar and 15 thoracic) were treated using RA fluoroscopy. Using a state-of-the-art flat-panel angiographer (Artis zee, Siemens, Erlangen, Germany), rotational acquisitions were obtained in all patients for immediate post-procedure 2D/3D reconstructions. Pre- and postoperative back pain was assessed with the visual analog scale (VAS). Fluoroscopy time, patient radiation dose exposure, technical success, mean procedure time, mean number of rotational acquisitions and procedural complications were recorded. All features were compared with a historical cohort of patients (N = 25) who underwent PVP under CT and mobile C-arm fluoroscopy guidance. In all cases, safe and accurate control of the needle insertion and bone-cement injection was successfully obtained with high-quality fluoroscopy images. One cement leakage was detected in the RAU group, and two leakages were detected in the CT and C-arm fluoroscopy group. Technical features were significantly different between the two groups (RAU vs. CT): mean procedure time: 38.2 min vs. 60.2 min (p = 0.02); median fluoroscopy time: 14.58 and 4.58 min (p = 0.02); median number of rotational acquisitions: 5 vs. 10 (p = 0.02); mean patient dose: 6 ± 1.3 mSv vs. 23 ± 1.3 mSv (p = 0.02). There were minor complications (pain, small hematoma) in two patients (8%) in the study group and three cases (12%) in the control group. RAU guidance is an effective and safe technique for performing PVP because it reduces the procedural time and radiation exposure. (orig.)

Peripheral lymphocyte subpopulations in recurrent aphthous ulceration

DEFF Research Database (Denmark)

Pedersen, A; Klausen, B; Hougen, H P

1991-01-01

Peripheral lymphocyte subsets--T-helper (CD4+), T-suppressor/cytotoxic (CD8+), and naive/virgin T cells/natural killer cells (CD45RA)--were studied quantitatively in 30 patients with recurrent aphthous ulceration (RAU) and 29 sex- and age-matched RAU-free control donors. The CD4+ percentage...... was significantly lower in the patients than in the control group (P less than 0.0001), whereas CD8+ and CD4/CD8 ratio figures did not differ significantly between patients and controls. The CD45RA+ counts were significantly higher in the patient group (P less than 0.01). The study supports previous investigations...

Low-Level Laser Therapy in the Treatment of Recurrent Aphthous Ulcers: A Systematic Review

Directory of Open Access Journals (Sweden)

Fernando Alves Vale

2015-01-01

Full Text Available Recurrent aphthous ulcers (RAUs are the most common lesion found in the oral cavity. There is no definitive cure for RAUs and current treatments are aimed at minimizing symptoms. Since low-level laser therapy (LLLT modulates inflammatory responses, and promotes pain reduction and cellular biostimulation, LLLT can be suggested as an alternative treatment for RAUs. The literature concerning the potential of LLLT in the treatment of RAUs was evaluated. A systematic literature review identified 22 publications, of which only 2 studies were adopted. The eligibility criteria consisted of randomized controlled trials (RCTs. Both RCTs achieved significant results concerning LLLT and pain-level reductions and reduced healing times. Despite the variance in irradiation conditions applied in both studies, very similar wavelengths were adopted. There is accordingly strong evidence that wavelength plays an important role in RAU treatment. Taking into account the different parameters applied by selected RCTs, it is not possible to suggest that a specific protocol should be used. However, in light of the significant results found in both studies, LLLT can be suggested as an alternative for RAU treatment. Additional RCTs should be performed in order to reach a clinical protocol and better understand the application of LLLT in RAU treatment.

Uus plaat

Index Scriptorium Estoniae

2003-01-01

Heliplaatidest: PS TRoika "Liitu meiega", Gicu Rau "Kaunid Eesti lood paaniflöödile", "Talvehitt 2004", Ice Cream "Oled minu järgi hull", Sõpruse Puiestee "Mustale merele", Metro Luminal "Ainult rottidele"

New Fellows and Honorary Fellow

Indian Academy of Sciences (India)

Home; Fellowship. Fellow Profile. Elected: 1934 Section: Engineering & Technology. Rau, M A Govinda. Date of birth: 26 August 1901. Date of death: 19 November 1954. Specialization: Chemical Engineering. YouTube; Twitter; Facebook; Blog ...

SAFE DISPOSAL OF MUNICIPAL WASTES IN NIGERIA ...

African Journals Online (AJOL)

affairs in the management of municipal solid waste in most parts of Nigeria. ... 1 John G. Rau and David Wooten (eds), Environmental Impact Analysis Handbook (Mc- ..... Up to date efficient “cleaner production technologies” are expected to be.

On alpha activity relationships in 226Ra and U/sub nat/

International Nuclear Information System (INIS)

Krejbichova, Z.

1982-01-01

A gross alpha activity of 0.1 Bq/l is permitted for drinking and surface waters. If gross activity is higher, it is suitable to determine the 226 Ra content which must not exceed 0.1 Bq/l. The permissible content of natural uranium is 0.05 mg/l. In most samples of ground and surface waters gross alpha activity was below the permissible limit. In some samples with a high content of salts a higher Ra+U activity was found which exceeded gross activity. This was caused by the interference of nonradioactive admixtures. In other samples a higher gross alpha activity was found than was the sum Ra+U which may have been caused by alpha sources from radon decay. It was found that the gross alpha activity of waters is rather caused by uranium than by radium. (E.S.)

Fulltext PDF

Indian Academy of Sciences (India)

Ananda Rau and Vijayaraghavan were students of G. H Hardy and the ... Advanced Studies in Simla but by then his health was deteriorating .... mental solution of the heat equation given by. 00. K(x, y, t) ... the asymptotic behaviour where Co is ...

Resonance – Journal of Science Education | Indian Academy of ...

Indian Academy of Sciences (India)

Home; Journals; Resonance – Journal of Science Education; Volume 20; Issue 4. The Rosetta-Philae Comet Mission as Physics Appreciation. A Ravi P Rau. General Article Volume 20 Issue 4 April 2015 pp 346-351. Fulltext. Click here to view fulltext PDF. Permanent link:

Population dynamics of Lemniscomys rosalia (Muridae: Rodentia) in ...

African Journals Online (AJOL)

Numerous studies have reported increases in rodent populations following good rainfall (Nel 1978; Perrin & Swanepoel 1987; Bronner, Rau- ten bach & Meester 1988). This relationship is thought to be an indirect one where increased rainfall acts to increase cover and food supply. thus enabling rodents to reproduce (Neal.

Ostrich: Journal of African Ornithology - Vol 88, No 1 (2017)

African Journals Online (AJOL)

DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT. Abdulmaula Hamza, Nicola Baccetti, Joe Sultana, Jaber Yahia, Marco Zantello, Adriano de Faveri, Nick Cutts, John Borg, Hichem Azafzaf, Pierre Defos du Rau, Esam Bourass, Khaled Etayeb, Michael Elliott, 53–58. http://dx.doi.org/10.2989/00306525.2016.1231139 ...

LongoVital in the prevention of recurrent aphthous ulceration

DEFF Research Database (Denmark)

Pedersen, A; Hougen, H P; Klausen, B

1990-01-01

LongoVital (LV) (DK. Reg. No. 5178/75) is a herbal based tablet enriched with recommended doses of vitamins. The present study was undertaken to investigate prevention of recurrent aphthous ulceration (RAU) during 6 months' daily intake of LV as compared with placebo in a double-blind, randomized...

Resonance journal of science education

Indian Academy of Sciences (India)

IAS Admin

K B Athreya. 311 Koinophilia and Human Facial Attractiveness. Aishwariya Iyengar, Rutvij Kulkarni and T N C Vidya. 320 Designing for Quieter Living. M L Munjal. 346 The Rosetta–Philae Comet Mission as Physics. Appreciation. A R P Rau. 352 From Navigation to Star Hopping: Forgotten. Formulae. B S Shylaja. 311. 360 ...

Resonance – Journal of Science Education | News

Indian Academy of Sciences (India)

pp 346-351 General Article. The Rosetta-Philae Comet Mission as Physics Appreciation · A Ravi P Rau · More Details Fulltext PDF. pp 352-359 General Article. From Navigation to Star Hopping: Forgotten Formulae · B S Shylaja · More Details Fulltext PDF. pp 360-367 Classroom. Tutorial on Phylogenetic Inference - I · Felix ...

Photovoltaic reciprocity and quasi-Fermi level splitting in nanostructure-based solar cells (Conference Presentation)

Science.gov (United States)

Aeberhard, Urs

2017-04-01

The photovoltaic reciprocity theory relates the electroluminescence spectrum of a solar cell under applied bias to the external photovoltaic quantum efficiency of the device as measured at short circuit conditions [1]. So far, the theory has been verified for a wide range of devices and material systems and forms the basis of a growing number of luminesecence imaging techniques used in the characterization of photovoltaic materials, cells and modules [2-5]. However, there are also some examples where the theory fails, such as in the case of amorphous silicon. In our contribution, we critically assess the assumptions made in the derivation of the theory and compare its predictions with rigorous formal relations as well as numerical computations in the framework of a comprehensive quantum-kinetic theory of photovoltaics [6] as applied to ultra-thin absorber architectures [7]. One of the main applications of the photovoltaic reciprocity relation is the determination of quasi-Fermi level splittings (QFLS) in solar cells from the measurement of luminescence. In nanostructure-based photovoltaic architectures, the determination of QFLS is challenging, but instrumental to assess the performance potential of the concepts. Here, we use our quasi-Fermi level-free theory to investigate existence and size of QFLS in quantum well and quantum dot solar cells. [1] Uwe Rau. Reciprocity relation between photovoltaic quantum efficiency and electrolumines- cent emission of solar cells. Phys. Rev. B, 76(8):085303, 2007. [2] Thomas Kirchartz and Uwe Rau. Electroluminescence analysis of high efficiency cu(in,ga)se2 solar cells. J. Appl. Phys., 102(10), 2007. [3] Thomas Kirchartz, Uwe Rau, Martin Hermle, Andreas W. Bett, Anke Helbig, and Jrgen H. Werner. Internal voltages in GaInP-GaInAs-Ge multijunction solar cells determined by electro- luminescence measurements. Appl. Phys. Lett., 92(12), 2008. [4] Thomas Kirchartz, Anke Helbig, Wilfried Reetz, Michael Reuter, Jürgen H. Werner, and

Modeling of Red Giant and AGB Stars Atmospheres: Constraints from VLTI and HST Observations

Science.gov (United States)

Rau, Gioia

2018-04-01

The chemical enrichment of the Universe is considerably affected by the contributions of low-to-intermediate mass stars through the mass-loss provided via their stellar winds. First, we will present our investigation in the near-IR with VLTI/GRAVITY (Wittkowski, Rau, et al., in prep.). Our aim was to verify at different epochs the model-predicted variability of the visibility spectra. We use CODEX model atmospheres, as well as best-fit 3D radiation hydrodynamic simulations (e.g. Freytag et al., 2017), for comparison with the observations. Our preliminary results on R Peg suggest a decreasing contribution by extended CO layers as the star transitions from maximum to minimum phase. Second, we will show a preliminary modeling of UV spectra obtained with HST/GHRS that contain chromospheric emission lines of, e.g., Mg II and Fe II. Via Sobolev with Exact Integration (SEI) modeling, we determined for the two M-giant stars γ Cru and µ Gem the characteristics of their winds (turbulence, acceleration, and opacity), and their average global mass-loss rates (Rau, Carpenter et al., in prep.). Finally, we briefly discuss the impact of instruments on board JWST in progressing this investigation.

Carcinome épidermoïde Primitif de la Prostate: A propos d'un cas et ...

African Journals Online (AJOL)

A. Bahloul

RAU: rétention aigu d'urine, SUBA: symptômes urinaires du bas appareil, ADP: adénopathies, PRP: prostatectomie rétro-pubienne, CPT: cysto- prostatectomie totale, RTUP: résection trans-urétrale de la prostate nécessaires [9]. Munoz F et al. [1] a présenté un cas traité par une association radio-chimiothérapie, permettant ...

Arhitektuuriuudised / Karen Jagodin

Index Scriptorium Estoniae

Jagodin, Karen, 1982-

2007-01-01

Soome arhitekti Sami Rintala park Lõuna-Koreas Anyang'is ja hotell Põhja-Norras Kirkenes. Prantsuse arhitekti Edouard Francois' sotsiaalmaja Normandia väikelinnas Louviers'is. Kopenhaagenis ehitati silotornid ümber korterelamuteks (Hollandi arhitektuuribüroo MVRDV koos Taani büroo JJW Arkitekteriga). Energiasäästlik büroohoone Hollandis (büroo RAU). Johnston Marklee & Associatesi projekteeritud eramu Los Angelese lähedal

Guidelines for Effective Selective Listening

Science.gov (United States)

1979-05-01

N., & Lockhart , R. S. Levels -of processing : A framework for qor research. Journa of Verbal Learnina and Verbal Behavior, Doeknimgo D. 0,9...e.g., Craik & Lockhart , 1972), interfering activities (e.g., Postman, 1961), and manner in which retention is measured (e.g., Postman & Rau, 1957...TO ENHANCE THE PROCESSING OF TARGET I NFORMATIONT 8 WHEN OPERATING IN HEAVY BACKGROUND NOISE, IT MAY BE BENEFICIAL TO MAINTAIN SOME VISUAL CONTACT WITH

Review of the all Source Analysis System as a Part of the Audit of the Effectiveness of the Defense Acquisition Board Review Process-FY 1993.

Science.gov (United States)

1993-04-20

OFFICE OF THE INSPECTOR GENERAL REVIEW OF THE ALL SOURCE ANALYSIS SYSTEM AS A PART OF THE AUDIT OF THE EFFECTIVENESS OF THE DEFENSE...System as a Part of the Audit of the Effectiveness of the Defense Acquisition Board Review Process--FY 1993 (Report No. 93-087) We are providing...appreciate the courtesies extended to the audit staff. If you have questions on this report, please contact Program Director Russell A. Rau at (703) 693

Molecular Signatures and Diagnostic Biomarkers of Cumulative, Blast-Graded Mild TBI

Science.gov (United States)

2013-10-01

ischemic stroke. Neurol. Res. 30, 783–793. 35. Wang, H.C., Lin, W.C., Lin, Y.J., Rau, C.S., Lee, T.H., Chang, W.N., Tsai, N.W., Cheng, B.C., Kung , C.T., and...J.K., Shen, C.A., Yin, H.N., Zhou, X.F., Lu, W., Hu, Q.G., Chi, Y.F., Ma, L., 22  Deng, H.P., Zhang, X.B., Sun, T.J., and Han , Y.F. (2010). [Early

Verfassungspolitik als Konstruktion von Lernprozessen? Konstitutionalisierung und Identitätsbildung in der Europäischen Union

OpenAIRE

Achim Hurrelmann

2002-01-01

The three most important international representatives of the Federal Republic of Germany - foreign minister Joschka Fischer, federal president Johannes Rau and federal chancellor Gerhard Schröder - have in the last few years all gone public with concepts for a European constitution. This paper attempts an analysis of these concepts that incorporates insights from constructivist approaches to institutional and constitutional analysis. It is argued that in spite of differences in detail, the c...

PREFACE: 3rd International Symposium ''Optics and its Applications''

Science.gov (United States)

Calvo, M. L.; Dolganova, I. N.; Gevorgyan, N.; Guzman, A.; Papoyan, A.; Sarkisyan, H.; Yurchenko, S.

2016-01-01

The SPIE.FOCUS Armenia: 3rd International Symposium ''Optics and its Applications'' (OPTICS-2015) http://rau.am/optics2015/ was held in Yerevan, Armenia, in the period October 1 - 5, 2015. The symposium was organized by the International Society for Optics and Photonics (SPIE), the Armenian SPIE student chapter with collaboration of the Armenian TC of ICO, the Russian-Armenian University (RAU), the Institute for Physical Research of National Academy of Sciences of Armenia (IPR of NAS), the Greek-Armenian industrial company LT-PYRKAL, and the Yerevan State University (YSU). The Symposium was co-organized by the SPIE & OSA student chapters of BMSTU, the Armenian OSA student chapter, and the SPIE student chapters of Lund University and Wroclaw University of Technology. The symposium OPTICS-2015 was dedicated to the International Year of Light and Light-Based Technologies. OPTICS-2015 was devoted to modern topics and optical technologies such as: optical properties of nanostructures, silicon photonics, quantum optics, singular optics & its applications, laser spectroscopy, strong field optics, biomedical optics, nonlinear & ultrafast optics, photonics & fiber optics, and mathematical methods in optics. OPTICS-2015 was attended by 100 scientists and students representing 17 countries: Armenia, China, Czech Republic, France, Georgia, Germany, India, Iran, Italy, Latvia, Mexico, Poland, Russia, Saudi Arabia, Sweden, Ukraine, and USA. Such a broad international community confirmed the important mission of science to be a uniting force between different countries, religions, and nations. We hope that OPTICS-2015 inspired and motivated students and young scientists to work in optics and in science in general. The present volume of Journal of Physics: Conference Series includes proceedings of the symposium covering various aspects of modern problems in optics. We are grateful to all people who were involved in the organization process. We gratefully acknowledge support from

Many southwest hosptials will receive decreased CMS reimbursement

OpenAIRE

Robbins RA

2013-01-01

No abstract available. Article truncated at 150 words. More hospitals are receiving penalties than bonuses in the second year of the Centers for Medicare and Medicaid Services’ (CMS) quality incentive program, and the average penalty is steeper than last year according to a report from Jordan Rau in Kaiser Health News (1). Southwest hospitals reflect that trend with New Mexico and Arizona exceeding the US average both in percentage of hospitals receiving penalties and the average size of the ...

Simplified Fiber-Wireless Distribution of HD Video in Passive and Active W-band Close Proximity Terminals

DEFF Research Database (Denmark)

Lebedev, Alexander; Rodes Lopez, Roberto; Yu, Xianbin

2012-01-01

We experimentally demonstrate uncompressed high-definition (HD) video distribution at 84 GHz Radio over Fiber link achieving up to 3 meters of wireless transmission. We experimentally emulate Metro-Access architecture by deploying single/multimode fibers. Passive and active approaches for remote...... antenna unit (RAU) are experimentally investigated. The bit error rate (BER) performance of the optical and wireless channels is reported. A successful transmission of uncompressed HD video in the W-band wireless channel is demonstrated with prospects to pave the way for application-focused fiber-wireless...

Trial Burn Plan for a Transportable Incineration System (TIS) at the Savanna Army Depot Activity (SADA) Washout Lagoon Area

Science.gov (United States)

1991-11-27

sampling line. Draw a 2.3.2 Emision Rau Correction ?actor or cent. Calculste the dry molecular weight as r n the a ere omission ate at. AnO~ ~ ~ ~Se~ .3...compare AV readlng of the gauge Section 3.8). to determine the sUcs,-c C dry served, with those of a gauge-oil manometer at a molecular weight, and...that the face openins of the tub an to the procedure outlined in Sections L1.2ducted: use a dry molecular veight of 29.0. aligned with=n the

Proceedings of the 21. RAU: Annual meeting of the LNLS users. Abstracts of scientific papers; Anais da 21. RAU: Reuniao anual de usuarios do LNLS. Resumos de trabalhos cientificos

Energy Technology Data Exchange (ETDEWEB)

NONE

2011-07-01

Theoretical and experimental papers are presented in these proceedings covering the following subjects: structural biology, protein chemistry, atomic and molecular science, geoscience, environmental media, application on biological materials, soft matter, complex fluids, industrial application, structural, electronic and magnetic properties, surfaces and interfaces, and nano systems

Proceedings of the 20. RAU: Annual meeting of the LNLS users. Abstracts of scientific papers; Anais da 20. RAU: Reuniao anual de usuarios do LNLS. Resumos de trabalhos cientificos

Energy Technology Data Exchange (ETDEWEB)

NONE

2010-07-01

Theoretical and experimental papers are presented in these proceedings covering the following subjects: structural biology, protein chemistry, atomic and molecular science, geoscience, environmental media, application on biological materials, soft matter, complex fluids, industrial application, structural, electronic and magnetic properties, surfaces and interfaces, and nano systems.

Network Management System for (FUTON-like) Radio-over-Fiber Infrastructure

DEFF Research Database (Denmark)

Santiago, Carlos; Gangopadhyay, Bodhisattwa; Ramkumar, Venkata

2010-01-01

by the FUTON Middleware. Although a significant amount of prior research work can be found in the literature related to RoF, there is still significant lack of technologies concerning RoF networks management. RoF Manager and its sub-systems target to fill such gap, proposing a novel concept in the form...... operational costs. The RoF Network Manager manages the network equipment on the optical front haul between the Central Unit (CU) and all Remote Antenna Units (RAU)s connected by it, as well as the communication links, while enabling end-to-end service problem resolution and service quality management...

Coverage Range and Cost Comparison of Remote Antenna Unit Designs for Inbuilding Radio over Fiber Technology

Directory of Open Access Journals (Sweden)

Razali Ngah

2013-09-01

Full Text Available Future communication needs to be ubiquitous, broadband, convergent, and seamless. Radio over fiber (RoF technology is one of the most important enabler in access network for the technologies. Adoption of RoF faces bottleneck in optoelectronics, that they are still expensive, high power consumption, and limited in bandwidth. To solve the problem, transceiver in remote antenna unit (RAU is developed, i.e. electroabsorption transceiver (EAT and asymmetric FabryPerot modulator (AFPM. This paper compares their coverage range and cost in providing WCDMA and WLAN services. Needed gain of RF amplifier for supporting picocell is also discussed.

Radioactivity monitoring by the official monitoring stations in North-Rhine Westphalia and the Juelich Nuclear Research Centre after the Chernobyl reactor accident

International Nuclear Information System (INIS)

1986-01-01

This official report presents a governmental declaration of the prime minister of NRW, Mr. Rau, concerning the reactor accident at Chernobyl, and a joint declaration of ministers of NRW, concerning the impact of the accident on the Land NRW. These statements are completed by six official reports on radioactivity measurements carried out by the official monitoring stations of the Land and by the KFA Juelich. These reports inform about methods, scope, and results of the measuring campaigns accomplished by the Zentralstelle fuer Sicherheitstechnik (ZFS), the public materials testing office (MPA), the Chemisches Untersuchungsamt, the Landesamt fuer Wasser und Abfall, and the KFA Juelich. (DG) [de

e - 2e Collisions near ionization threshold - electron correlations

International Nuclear Information System (INIS)

Mazeau, J.; Huetz, A.; Selles, P.

1986-01-01

The results presented in this report constitute the first direct experimental proof that a few (LSΠ) states definitely contribute to the near threshold ionization cross section. The Wannier Peterkop Rau theory is an useful tool to their understanding and a more precise determination of the angular correlation width is still needed. It has been shown that the values of the a LSΠ coefficients can be extracted from the observations. These are physically interesting quantities as they are directly related to the probability of forming Wannier ridge riding states above the double escape threshold, and considerable theoretical effort is presently in progress to investigate such states. (Auth.)

Mental disorder comorbidity in Te Rau Hinengaro: the New Zealand Mental Health Survey.

Science.gov (United States)

Scott, Kate M; McGee, Magnus A; Oakley Browne, Mark A; Wells, J Elisabeth

2006-10-01

To show the extent and patterning of 12 month mental disorder comorbidity in the New Zealand population, and its association with case severity, suicidality and health service utilization. A nationwide face-to-face household survey was carried out in October 2003 to December 2004 with 12,992 participants aged 16 years and over, achieving a response rate of 73.3%. The measurement of mental disorder was with the World Mental Health Survey Initiative version of the Composite International Diagnostic Interview (CIDI 3.0). Comorbidity was analysed with hierarchy, consistent with a clinical approach to disorder count. Comorbidity occurred among 37% of 12 month cases. Anxiety and mood disorders were most frequently comorbid. Strong bivariate associations occurred between alcohol and drug use disorders and, to a lesser extent, between substance use disorders and some anxiety and mood disorders. Comorbidity was associated with case severity, with suicidal behaviour (especially suicide attempts) and with health sector use (especially mental health service use). The widespread nature of mental disorder comorbidity has implications for the configuration of mental health services and for clinical practice.

The micro-politics of macromolecules in the taxonomy and restoration of Quaggas

Directory of Open Access Journals (Sweden)

Peter Heywood

Full Text Available Quaggas, partially striped zebras from the Karoo, were a distinctive component of the South African fauna. They had dark stripes on their faces, necks and fore-bodies. Otherwise their bodies were unstriped, and the background colour of both the striped and unstriped upper parts of their bodies was chestnut. They were hunted extensively, and in the nineteenth century were increasingly excluded from grazing land and water. The Game Amendment Act of the Government of the Cape of Good Hope was intended to protect quaggas, as well as other fauna, but by the time of its passage in 1886 they were already extinct. Quaggas were given the binomial name Equus quagga in the eighteenth century and many viewed them as a species distinct from plains zebras. However, in 1984 the first DNA sequencing of an extinct organism demonstrated that quaggas were not a separate species but a subspecies of the plains zebra. This revised taxonomy made possible the Quagga Project in which selective breeding from plains zebras has resulted in animals termed 'Rau quaggas' whose bodies have reduced striping but which lack the chestnut background colour that is evident in most paintings of living quaggas. Rau quaggas now live in captivity in several locations in South Africa, and could help restore the ecology of damaged environments where quaggas once roamed. Both quagga DNA and the Quagga Project can be considered as 'boundary objects' that bring together a heterogeneous variety of stakeholders including scientists and hunters, nature lovers and commercial organisations. The successful micro-politics of the Quagga Project in negotiating with different bodies and in obtaining funding from diverse sources provides a model that could be emulated by conservation bodies.

A clinical evaluation of amlexanox oral adhesive pellicles in the treatment of recurrent aphthous stomatitis and comparison with amlexanox oral tablets: a randomized, placebo controlled, blinded, multicenter clinical trial

Directory of Open Access Journals (Sweden)

Gao Feng

2009-05-01

Full Text Available Abstract Background Amlexanox has been developed as a 5 percent topical oral paste for the treatment of patients with recurrent aphthous stomatitis (RAS in most European countries. However, it is not yet available in China and has not been generally accepted in clinical treatment. The aim of this study was to explore the effectiveness of amlexanox oral adhesive pellicles in the treatment of minor recurrent aphthous ulcers, and compare the results with those of amlexanox oral adhesive tablets in order to analyse the difference between the two dosage forms of amlexanox. Methods We performed a randomized, blinded, placebo-controlled, parallel, multicenter clinical study. A total of 216 patients with minor recurrent aphthous ulcers (MiRAU were recruited and randomized to amlexanox pellicles or placebo pellicles. Pellicles were consecutively applied four times per day, for five days. The size and pain level of ulcers were measured and recorded on treatment days 0, 4 and 6. Finally, the results were compared with those of our previous 104 cases treated with amlexanox tablets. Results Amlexanox oral adhesive pellicles significantly reduced ulcer size (P= 0.017 for day 4, P=0.038 for day 6 and alleviated ulcer pain (P=0.021 for day 4, P=0.036 for day 6. No significant difference was observed in the treatment effectiveness between the pellicle and tablet form of amlexanox. Conclusions Amlexanox oral adhesive pellicles are as effective and safe as amlexanox oral adhesive tablets in the treatment of MiRAU for this Chinese cohort. However, pellicles seem to be more comfortable to use when compared with the dosage form of tablets. Therefore, in clinical practice, amlexanox oral adhesive pellicles may be a better choice for RAS patients. Trials registration Nederlands Trial Register NTR1727.

Contribució a l'estudi de la modelització i l'optimització de l'operació de plantes químiques multipropòsit de funcionament discontinu

OpenAIRE

Graells Sobré, Moisès

1996-01-01

Aquest treball de tesi s'adreça a la indústria de procés químic d'operació discontínua tot i que també pot resultar profitós per altres situacions de fabricació per lots. Aquests tipus d'indústries són molt variats i s'inclouen en sectors com el de la química fina, el farmacèutic, l'agroalimentari i, en definitiva, l'elaboració d'especialitats. La seva importància econòmica rau tant en el seu significatiu volum de producció com en l'alt valor afegit que sovint tenen els productes.L'objecte de...

Giant optical anisotropy in M-plane GaN/AlGaN quantum wells due to crystal-field effect

International Nuclear Information System (INIS)

Chen, C.-N.; Su, W.-L.; Chang, K.-C.; Chang, S.-H.; Chiang, J.-C.; Lo Ikai; Wang, W.-T.; Kao, H.-F.; Lee, M.-E.

2008-01-01

The optical polarization of GaN/AlGaN wurtzite quantum wells in various orientations is studied using an arbitrarily-oriented [hkil] Hamiltonian potential matrix. The optical matrix elements in the wurtzite quantum wells are calculated using the k.p finite difference scheme. The results reveal the presence of giant in-plane optical anisotropy (polarized normal to [0001]) in the M-plane (i.e., the (101-bar0)-oriented layer plane) GaN/Al 0.2 Ga 0.8 N quantum well, due to the positive crystal-field split energy effect (Δ CR >0). The present theoretical results are consistent with the photoluminescence measurements presented in the literature [B. Rau, et al., Appl. Phys. Lett. 77 (2000) 3343

Te Rau Hinengaro: the New Zealand Mental Health Survey: overview of methods and findings.

Science.gov (United States)

Wells, J Elisabeth; Oakley Browne, Mark A; Scott, Kate M; McGee, Magnus A; Baxter, Joanne; Kokaua, Jesse

2006-10-01

To estimate the prevalence and severity of anxiety, mood, substance and eating disorders in New Zealand, and associated disability and treatment. A nationwide face-to-face household survey of residents aged 16 years and over was undertaken between 2003 and 2004. Lay interviewers administered a computerized fully structured diagnostic interview, the World Health Organization World Mental Health Survey Initiative version of the Composite International Diagnostic Interview. Oversampling doubled the number of Māori and quadrupled the number of Pacific people. The outcomes reported are demographics, period prevalences, 12 month severity and correlates of disorder, and contact with the health sector, within the past 12 months. The response rate was 73.3%. There were 12,992 participants (2,595 Māori and 2,236 Pacific people). Period prevalences were as follows: 39.5% had met criteria for a DSM-IV mental disorder at any time in their life before interview, 20.7% had experienced disorder within the past 12 months and 11.6% within the past month. In the past 12 months, 4.7% of the population experienced serious disorder, 9.4% moderate disorder and 6.6% mild disorder. A visit for mental health problems was made to the health-care sector in the past 12 months by 58.0% of those with serious disorder, 36.5% with moderate disorder, 18.5% with mild disorder and 5.7% of those not diagnosed with a disorder. The prevalence of disorder and of serious disorder was higher for younger people and people with less education or lower household income. In contrast, these correlates had little relationship to treatment contact, after adjustment for severity. Compared with the composite Others group, Māori and Pacific people had higher prevalences of disorder, unadjusted for sociodemographic correlates, and were less likely to make treatment contact, in relation to need. Mental disorder is common in New Zealand. Many people with current disorder are not receiving treatment, even among those with serious disorder.

Proceedings of the 21. RAU: Annual meeting of the LNLS users. Abstracts of scientific papers

International Nuclear Information System (INIS)

2011-01-01

Theoretical and experimental papers are presented in these proceedings covering the following subjects: structural biology, protein chemistry, atomic and molecular science, geoscience, environmental media, application on biological materials, soft matter, complex fluids, industrial application, structural, electronic and magnetic properties, surfaces and interfaces, and nano systems

Motivation Enhancement Therapy with pregnant substance-abusing women: does baseline motivation moderate efficacy?

Science.gov (United States)

Ondersma, Steven J; Winhusen, Theresa; Erickson, Sarah J; Stine, Susan M; Wang, Yun

2009-04-01

Some evidence suggests that motivational approaches are less efficacious--or even counter-productive--with persons who are relatively motivated at baseline. The present study was conducted to examine whether disordinal moderation by baseline motivation could partially explain negative findings in a previous study [Winhusen, T., Kropp, F., Babcock, D., Hague, D., Erickson, S.J., Renz, C., Rau, L., Lewis, D., Leimberger, J., Somoza, E., 2008. Motivational enhancement therapy to improve treatment utilization and outcome in pregnant substance users. J. Subst. Abuse Treat. 35, 161-173]. Analyses also focused on the relative utility of the University of Rhode Island Change Assessment (URICA) scale, vs. a single goal question as potential moderators of Motivation Enhancement Therapy (MET). Participants were 200 pregnant women presenting for substance abuse treatment at one of four sites. Women were randomly assigned to either a three-session MET condition or treatment as usual (TAU). Generalized Estimating Equations (GEE) revealed no significant moderation effects on drug use at post-treatment. At follow-up, contrary to expectations, participants who had not set a clear quit goal at baseline were less likely to be drug-free if randomized to MET (OR=0.48); participants who did set a clear quit goal were more likely to be drug-free if randomized to MET (OR=2.53). No moderating effects were identified via the URICA. Disordinal moderation of MET efficacy by baseline motivation may have contributed somewhat to the negative results of the [Winhusen, T., Kropp, F., Babcock, D., Hague, D., Erickson, S.J., Renz, C., Rau, L., Lewis, D., Leimberger, J., Somoza, E., 2008. Motivational enhancement therapy to improve treatment utilization and outcome in pregnant substance users. J. Subst. Abuse Treat. 35, 161-173] study, but in the opposite direction expected. A simple question regarding intent to quit may be useful in identifying persons who may differentially respond to motivational

The Scientific Legacy of Ugo Fano

Science.gov (United States)

Inokuti, Mitio

2001-04-01

In 1934 Fano received a Sc. D. degree in mathematics at University of Turin, Italy (the city of his birth in 1912). He was then led to physics by his cousin Guilio Racah, and received postdoctoral training from Fermi at Rome and from Heisenberg at Leipzig. He worked at institutions near Washington, D. C. during the war, and joined the staff of the National Bureau of Standards in 1946. He became a professor of physics at The University of Chicago in 1966. His contributions to radiation physics, atomic and molecular physics, and statistical physics are extensive and outstanding. Recognition includes many honors such as the Fermi Award by the DOE, and terms such as the Beutler-Fano profile of certain spectral lines, the Fano factor characterizing the fluctuations of the radiation-induced ionization, the Fano-Lichten mechanism for inelastic atomic collisions, and the Fano effect leading to spin-polarized photoelectrons. His work follows a style inherited from Fermi and is characterized by incisive insight into the physics behind experimental data, penetrating mathematical analysis, and close communications with many colleagues. Because he took a leading role in developing new areas of research and in nurturing young scientists, his influence now permeates many topics of physics. They include far uv and soft x-ray spectroscopy with synchrotron radiation and fundamental radiological physics, both stemming from his time at NBS, as well as multi-channel quantum-defect theory and hyperspherical-coordinate approach, both pioneered at Chicago. Fuller accounts of his life and science are seen in Inokuti [1], in Rau [2], and in a forthcoming special issue of Physics Essays in his honor. The present work is supported by U. S. DOE, Office of Science, Nuclear Physics Division, under Contract No. W-31-109-Eng-38. References 1. M. Inokuti, in Fundamental Processes of Atomic Dynamics, J. S. Briggs et al. (eds.), (Plenum, New York, 1988), p. 1. 2. A. R. P. Rau, Comments At. Mol. Phys

The scientific legacy of Ugo Fano

International Nuclear Information System (INIS)

Inokuti, M.

2001-01-01

In 1934 Fano received a Sc. D. degree in mathematics at University of Turin, Italy (the city of his birth in 1912). He was then led to physics by his cousin Guilio Racah, and received postdoctoral training from Fermi at Rome and from Heisenberg at Leipzig. He worked at institutions near Washington, D. C. during the war, and joined the staff of the National Bureau of Standards in 1946. He became a professor of physics at The University of Chicago in 1966. His contributions to radiation physics, atomic and molecular physics, and statistical physics are extensive and outstanding. Recognition includes many honors such as the Fermi Award by the DOE, and terms such as the Beutler-Fano profile of certain spectral lines, the Fano factor characterizing the fluctuations of the radiation-induced ionization, the Fano-Lichten mechanism for inelastic atomic collisions, and the Fano effect leading to spin-polarized photoelectrons. His work follows a style inherited from Fermi and is characterized by incisive insight into the physics behind experimental data, penetrating mathematical analysis, and close communications with many colleagues. Because he took a leading role in developing new areas of research and in nurturing young scientists, his influence now permeates many topics of physics. They include far uv and soft x-ray spectroscopy with synchrotron radiation and fundamental radiological physics, both stemming from his time at NBS, as well as multi-channel quantum-defect theory and hyperspherical-coordinate approach, both pioneered at Chicago. Fuller accounts of his life and science are seen in Inokuti [1], in Rau [2], and in a forthcoming special issue of Physics Essays in his honor. The present work is supported by U. S. DOE, Office of Science, Nuclear Physics Division, under Contract No. W-31-109-Eng-38. References 1. M. Inokuti, in Fundamental Processes of Atomic Dynamics, J. S. Briggs et al. (eds.), (Plenum, New York, 1988), p. 1. 2. A. R. P. Rau, Comments At. Mol. Phys

On Radio over Fiber for Heterogeneous Wireless Networks

DEFF Research Database (Denmark)

Riaz, M. Tahir; Nielsen, Rasmus Hjorth; Pedersen, Jens Myrup

2009-01-01

The paper provides an overview of the radio over fiber (RoF) technology and its potential use in heterogeneous wireless networks. Wireless communications have seen a huge growth in the last decade. It has been estimated that five in every six people in the entire world will have a mobile phone...... in 2010. The vast growing use of Internet on the mobile devices has also been increased significantly. In order to provide a broadband access for mobile communications, a new wireless infrastructure (fiber optic networks for distributed, extendible heterogeneous radio architectures and service...... provisioning - FUTON) based on RoF technology has been introduced. The project adopts centralized processing of radio signals for number of wireless base stations can enhance the network performance in terms of bandwidth, and QoS parameters. The simplified remote access units (RAU) are expected to not only...

Final Report of Project Nanometer Structures for Fuel Cells and Displays, etc.

Energy Technology Data Exchange (ETDEWEB)

Ji, Qing

2011-12-15

Low-energy ion beam bombardment induced self-assembly has been used to form various periodic nano-size wave-ordered structures (WOS). Such WOS can be used as hard etching masks to produce nanowire arrays, trenches etc., on other materials by means of traditional etching or ion sputtering. These periodic nano-size structures have a wide range of applications, including flat panel displays, optical electronics, and clean energy technologies (solar and fuel cells, lithium batteries). In order to achieve high throughput of the above processes, a large area RF-driven multicusp nitrogen ion source has been developed for the application of nitrogen ion beam induced surface modification. An integrated ion beam system, which can house either a large area RF-driven multicusp ion source or a commercially available microwave ion source (Roth & Rau AG Tamiris 400-f) have been designed, manufactured, assembled, and tested.

A randomized controlled pilot trial comparing the impact of access to clinical endocrinology video demonstrations with access to usual revision resources on medical student performance of clinical endocrinology skills.

Science.gov (United States)

Hibbert, Emily J; Lambert, Tim; Carter, John N; Learoyd, Diana L; Twigg, Stephen; Clarke, Stephen

2013-10-03

Demonstrating competence in clinical skills is key to course completion for medical students. Methods of providing clinical instruction that foster immediate learning and potentially serve as longer-term repositories for on-demand revision, such as online videos demonstrating competent performance of clinical skills, are increasingly being used. However, their impact on learning has been little studied. The aim of this study was to determine the value of adjunctive on-demand video-based training for clinical skills acquisition by medical students in endocrinology. Following an endocrinology clinical tutorial program, 2nd year medical students in the pre-assessment revision period were recruited and randomized to either a set of bespoke on-line clinical skills training videos (TV), or to revision as usual (RAU). The skills demonstrated on video were history taking in diabetes mellitus (DMH), examination for diabetes lower limb complications (LLE), and examination for signs of thyroid disease (TE). Students were assessed on these clinical skills in an observed structured clinical examination two weeks after randomization. Assessors were blinded to student randomization status. For both diabetes related clinical skills assessment tasks, students in the TV group performed significantly better than those in the RAU group. There were no between group differences in thyroid examination performance. For the LLE, 91.7% (n = 11/12) of students randomized to the video were rated globally as competent at the skill compared with 40% (n = 4/10) of students not randomized to the video (p = 0.024). For the DMH, 83.3% (n = 10/12) of students randomized to the video were rated globally as competent at the skill compared with 20% (n = 2/10) of students not randomized to the video (p = 0.007). Exposure to high quality videos demonstrating clinical skills can significantly improve medical student skill performance in an observed structured clinical examination of these skills, when

Management of oral lesions in HIV-positive patients.

Science.gov (United States)

Baccaglini, Lorena; Atkinson, Jane C; Patton, Lauren L; Glick, Michael; Ficarra, Giuseppe; Peterson, Douglas E

2007-03-01

HIV/AIDS is currently the leading cause of death in Africa and the fourth leading cause of death worldwide. This systematic review of the literature was conducted to evaluate the evidence for treatment of the most common oral lesions associated with HIV: oral candidiasis with or without oropharyngeal involvement (OPC), oral hairy leukoplakia (OHL), recurrent aphthous-like ulcerations (RAU), oral Kaposi's sarcoma (OKS), orolabial herpes simplex infection (HSV), oral herpes zoster infection (VZV), intraoral or perioral warts (HPV), and HIV-associated periodontal diseases. Treatment of HIV-associated salivary gland disease is addressed in a different section of this World Workshop. We found the largest body of evidence for treatment of OPC in HIV patients. Future trials will be needed to test drugs currently in development for treatment of Candida strains that are resistant to existing therapies. There were no double blind, placebo-controlled randomized clinical trials (RCT) for topical treatment of OHL, and only one RCT for systemic treatment of the lesion with desciclovir. Systemic thalidomide was the only drug tested in RCT for treatment or prevention of RAU. Only 1 double-blind RCT comparing vinblastine and sodium tetradecyl sulfate was identified for localized treatment of OKS. Three drugs (famciclovir, acyclovir, and valaciclovir) were shown to be effective in randomized, double-blind trials for treatment or suppression of mucocutaneous HSV lesions in HIV patients. In all 3 trials, the effects of these medications on orolabial HSV lesions were not reported separately. There were no double-blind, placebo-controlled RCT testing topical treatments for orolabial HSV lesions in HIV patients. No trials testing treatments of oral VZV were identified. There were no double-blind, placebo-controlled RCT for treatment of HIV-associated intraoral or perioral warts or periodontal diseases. In conclusion, there is a need for well-designed RCTs to assess the safety and

Remote Access Unit for Optic-to-Wireless Conversion

DEFF Research Database (Denmark)

Chorchos, Łukasz; Rommel, Simon; Turkiewicz, J. P.

. Growing demand for high speed wireless data transmission and new wireless standards like 5G force network operators to find new solutions for backhaul networks. Presently, to meet this need, attention of many researchers and top network vendors has been directed towards millimeter wave radio links....... Operation in the millimeter wave range brings new possibilities for a channel allocation as well as allows wider radio channels to be used. Moreover this frequency range is lighter licensed than regular GSM. This clearly shows a huge potential of millimeter waves for a high speed wireless data transmission...... was proposed and research projects like IPHOBAC-NG were founded. The aim of the mentioned project is to employ novel RAUs featuring opticto-wireless and wireless-to-optic conversion with a speeds of 1-10Gbit/s for broadband wireless access and up to 3Gbit/s for mobile backhaul. The RAU proposed in this paper...

Detecting measurement-induced relative-position localization

International Nuclear Information System (INIS)

Knott, P A; Sindt, J; Dunningham, J A

2013-01-01

The theory of decoherence explains how classicality emerges from an underlying quantum reality. An additional interpretation to this has been proposed in which scattering events induce the localization of relative observables (Rau et al 2003 Science 301 1081). An interesting consequence of this process is that it involves the build-up of certain robust entanglements between the observables being localized. To date the weakness of this interpretation has been the lack of a clear experimental signature that allows it to be tested. Here we provide a simple experimentally accessible scheme that enables just that. We also discuss a Bayesian technique that could, in principle, allow experiments to confirm the localization to any desired degree of accuracy and we present precision requirements that are achievable with current experiments. Finally, we extend the scheme from its initial one dimensional proof of principle to the more real world scenario of three dimensional localization. (paper)

Twelve-month and lifetime health service use in Te Rau Hinengaro: The New Zealand Mental Health Survey.

Science.gov (United States)

Oakley Browne, Mark A; Wells, J Elisabeth; McGee, Magnus A

2006-10-01

To estimate the 12 month and lifetime use of health services for mental health problems. A nationwide face-to-face household survey carried out in 2003-2004. A fully structured diagnostic interview, the World Health Organization Composite International Diagnostic Interview (CIDI 3.0) was used. There were 12 992 completed interviews from participants aged 16 years and over. The overall response rate was 73.3%. In this paper, the outcomes reported are 12 month and lifetime health service use for mental health and substance use problems. Of the population, 13.4% had a visit for a mental health reason in the 12 months before interview. Of all 12 month cases of mental disorder, 38.9% had a mental health visit to a health or non-health-care provider in the past 12 months. Of these 12 month cases, 16.4% had contact with a mental health specialist, 28.3% with a general medical provider, 4.8% within the human services sector and 6.9% with a complementary or alternative medicine practitioner. Most people with lifetime disorders eventually made contact if their disorder continued. However, the percentages seeking help at the age of onset were small for most disorders and several disorders had large percentages who never sought help. The median duration of delay until contact varies from 1 year for major depressive disorder to 38 years for specific phobias. A significant unmet need for treatment for people with mental disorder exists in the New Zealand community, as in other comparable countries.

Post-mortem radiography of the lungs: Experiments to compare various methods of examination and descriptions of their usefulness in actual practice

International Nuclear Information System (INIS)

Pankow, W.

1986-01-01

Described is the post-mortem examination of the isolated lung using radiologic-morphologic and histologic methods. Comparisons are made ragarding practical value of the conservation techniques chosen, which were the method of Markaria and Heitzmann that is based on fixing in alcohol and air drying and the nitrogen freezing method developed by Rau and colleagues. Both methods ensure adequate visualition of the pulmonary ultrastructure by X-rays, even though this observation should be qualified by the fact that pulmonary tissue fixed in alcohol tends to shrink and that intraalveolar edema are thus artificially reduced. Either of the methods under investigation permits angiographic and bronchographic examinations to be carried out without difficulty. In macroscopic evaluations better results are obtained for lungs fixed in alcohol. Freeze-dried samples offer advantages in the histological assessment of the pulmonary ultrastructure. Post-mortem radiography of the lungs is particularly valuable in the analysis of pathological changes in the pulmonary structure. (MBC) [de

Performance analysis for IEEE 802.11 distributed coordination function in radio-over-fiber-based distributed antenna systems.

Science.gov (United States)

Fan, Yuting; Li, Jianqiang; Xu, Kun; Chen, Hao; Lu, Xun; Dai, Yitang; Yin, Feifei; Ji, Yuefeng; Lin, Jintong

2013-09-09

In this paper, we analyze the performance of IEEE 802.11 distributed coordination function in simulcast radio-over-fiber-based distributed antenna systems (RoF-DASs) where multiple remote antenna units (RAUs) are connected to one wireless local-area network (WLAN) access point (AP) with different-length fiber links. We also present an analytical model to evaluate the throughput of the systems in the presence of both the inter-RAU hidden-node problem and fiber-length difference effect. In the model, the unequal delay induced by different fiber length is involved both in the backoff stage and in the calculation of Ts and Tc, which are the period of time when the channel is sensed busy due to a successful transmission or a collision. The throughput performances of WLAN-RoF-DAS in both basic access and request to send/clear to send (RTS/CTS) exchange modes are evaluated with the help of the derived model.

VizieR Online Data Catalog: Palomar Transient Factory SNe IIn photometry (Ofek+, 2014)

Science.gov (United States)

Ofek, E. O.; Arcavi, I.; Tal, D.; Sullivan, M.; Gal-Yam, A.; Kulkarni, S. R.; Nugent, P. E.; Ben-Ami, S.; Bersier, D.; Cao, Y.; Cenko, S. B.; De Cia, A.; Filippenko, A. V.; Fransson, C.; Kasliwal, M. M.; Laher, R.; Surace, J.; Quimby, R.; Yaron, O.

2017-07-01

The Palomar Transient Factory (PTF; Law et al. 2009PASP..121.1395L; Rau et al. 2009PASP..121.1334R) and its extension the intermediate PTF (iPTF) found over 2200 spectroscopically confirmed SNe. We selected 19 SNe IIn for which PTF/iPTF has good coverage of the light-curve rise and peak; they are listed in Table 1. Optical spectra were obtained with a variety of telescopes and instruments, including the Double Spectrograph (Oke & Gunn 1982PASP...94..586O) at the Palomar 5 m Hale telescope, the Kast spectrograph (Miller & Stone 1993, Lick Observatory Technical Report 66 (Santa Cruz, CA: Lick Observatory)) at the Lick 3 m Shane telescope, the Low Resolution Imaging Spectrometer (Oke et al. 1995PASP..107..375O) on the Keck-1 10 m telescope, and the Deep Extragalactic Imaging Multi-Object Spectrograph (Faber et al. 2003SPIE.4841.1657F) on the Keck-2 10 m telescope. (2 data files).

Light Emission by Nonequilibrium Bodies: Local Kirchhoff Law

Science.gov (United States)

Greffet, Jean-Jacques; Bouchon, Patrick; Brucoli, Giovanni; Marquier, François

2018-04-01

The goal of this paper is to introduce a local form of Kirchhoff law to model light emission by nonequilibrium bodies. While absorption by a finite-size body is usually described using the absorption cross section, we introduce a local absorption rate per unit volume and also a local thermal emission rate per unit volume. Their equality is a local form of Kirchhoff law. We revisit the derivation of this equality and extend it to situations with subsystems in local thermodynamic equilibrium but not in equilibrium between them, such as hot electrons in a metal or electrons with different Fermi levels in the conduction band and in the valence band of a semiconductor. This form of Kirchhoff law can be used to model (i) thermal emission by nonisothermal finite-size bodies, (ii) thermal emission by bodies with carriers at different temperatures, and (iii) spontaneous emission by semiconductors under optical (photoluminescence) or electrical pumping (electroluminescence). Finally, we show that the reciprocity relation connecting light-emitting diodes and photovoltaic cells derived by Rau is a particular case of the local Kirchhoff law.

Many southwest hosptials will receive decreased CMS reimbursement

Directory of Open Access Journals (Sweden)

Robbins RA

2013-11-01

Full Text Available No abstract available. Article truncated at 150 words. More hospitals are receiving penalties than bonuses in the second year of the Centers for Medicare and Medicaid Services’ (CMS quality incentive program, and the average penalty is steeper than last year according to a report from Jordan Rau in Kaiser Health News (1. Southwest hospitals reflect that trend with New Mexico and Arizona exceeding the US average both in percentage of hospitals receiving penalties and the average size of the penalty (Table 1. Colorado approximated the national averages (Table 1. Most hospitals are gaining or losing <0.2% but in some instances the penalties are substantial. Gallup Indian Medical Center in New Mexico, a federal government hospital on the border of the Navajo Reservation, will be paid 1.14 percent less for each patient and New Mexico’s average of a -0.31% decline in reimbursement are the largest changes nationally. “This program is driving what we want in health care,” said Dr. …

VizieR Online Data Catalog: R-band light curves of type II supernovae (Rubin+, 2016)

Science.gov (United States)

Rubin, A.; Gal-Yam, A.; De Cia, A.; Horesh, A.; Khazov, D.; Ofek, E. O.; Kulkarni, S. R.; Arcavi, I.; Manulis, I.; Yaron, O.; Vreeswijk, P.; Kasliwal, M. M.; Ben-Ami, S.; Perley, D. A.; Cao, Y.; Cenko, S. B.; Rebbapragada, U. D.; Wozniak, P. R.; Filippenko, A. V.; Clubb, K. I.; Nugent, P. E.; Pan, Y.-C.; Badenes, C.; Howell, D. A.; Valenti, S.; Sand, D.; Sollerman, J.; Johansson, J.; Leonard, D. C.; Horst, J. C.; Armen, S. F.; Fedrow, J. M.; Quimby, R. M.; Mazzali, P.; Pian, E.; Sternberg, A.; Matheson, T.; Sullivan, M.; Maguire, K.; Lazarevic, S.

2016-05-01

Our sample consists of 57 SNe from the PTF (Law et al. 2009PASP..121.1395L; Rau et al. 2009PASP..121.1334R) and the intermediate Palomar Transient Factory (iPTF; Kulkarni 2013ATel.4807....1K) surveys. Data were routinely collected by the Palomar 48-inch survey telescope in the Mould R-band. Follow-up observations were conducted mainly with the robotic 60-inch telescope using an SDSS r-band filter, with additional telescopes providing supplementary photometry and spectroscopy (see Gal-Yam et al. 2011, J/ApJ/736/159). The full list of SNe, their coordinates, and classification spectra are presented in Table 1. Most of the spectra were obtained with the Double Spectrograph on the 5m Hale telescope at Palomar Observatory, the Kast spectrograph on the Shane 3m telescope at Lick Observatory, the Low Resolution Imaging Spectrometer (LRIS) on the Keck I 10m telescope, and the DEep Imaging Multi-Object Spectrograph (DEIMOS) on the Keck II 10m telescope. (2 data files).

Isolation, structural determination, synthesis and quantitative determination of impurities in Intron-A, leached from a silicone tubing.

Science.gov (United States)

Chan, Tze-Ming; Pramanik, Birendra; Aslanian, Robert; Gullo, Vincent; Patel, Mahesh; Cronin, Bart; Boyce, Chris; McCormick, Kevin; Berlin, Mike; Zhu, Xiaohong; Buevich, Alexei; Heimark, Larry; Bartner, Peter; Chen, Guodong; Pu, Haiyan; Hegde, Vinod

2009-02-20

Investigation of unexpected levels of impurities in Intron product has revealed the presence of low levels of impurities leached from the silicone tubing (Rehau RAU-SIK) on the Bosch filling line. In order to investigate the effect of these compounds (1a, 1b and 2) on humans, they were isolated identified and synthesized. They were extracted from the tubing by stirring in Intron placebo at room temperature for 72 h and were enriched on a reverse phase CHP-20P column, eluting with gradient aqueous ACN and were separated by HPLC. Structural elucidation of 1a, 1b and 2 by MS and NMR studies demonstrated them to be halogenated biphenyl carboxylic acids. The structures were confirmed by independent synthesis. Levels of extractable impurities in first filled vials of actual production are estimated to be in the range of 0.01-0.55 microg/vial for each leached impurity. Potential toxicity of these extractables does not represent a risk for patients under the conditions of clinical use.

Magmatic emulsion texture formed by mixing during extrusion, Rauðafell composite complex, Breiðdalur volcano, eastern Iceland

DEFF Research Database (Denmark)

Charreteur, Gilles; Tegner, Christian

2013-01-01

The Rauoafell composite complex is part of the Neogene Breiodalur volcano, eastern Iceland and is composed of a composite feeder dyke, a vent structure and a composite flow. The two end-members of the composite complex are rhyolite and basalt, and both are rich in plagioclase macrocrysts: bytowni...

Clinical Short term Effects of Nd∶ YAG Laser and CO2 Laser on Minor Aphthous Ulcer%Nd∶YAG激光、CO2激光局部治疗轻型复发性阿弗他溃疡短期疗效比较研究

Institute of Scientific and Technical Information of China (English)

李娟; 刘宗响; 段宁; 孙鹏; 王文梅

2017-01-01

Objective:To compare the clinical short-term effects of Nd∶YAG laser and CO2 laser in the treatment of minor aphthous ulcer (MiRAU).Methods:Sixty-eight casesof clinically diagnosed minor aphthous ulcer (MiRAU) patients were randomly divided into 2 groups,namely,the Nd∶YAG laser treatment group (Nd∶ YAG laser group) and CO2 laser treatment group (CO2 laser group) with 34 cases in each group.The treatment period was 3-5 days.By the method of VAS and DP classification,the short-term curative effect of two groups was evaluated and compared.Results:In the first three days after laser treatment,the pain reduction index value of two groups was recorded,respectively.Index value of the Nd∶ YAG laser was:(3.27±0.24),(4.23±0.26) and (5.60±0.27),which was significantly higher than that of the CO2 laser group with the index value of (2.56±0.27),(3.40± 0.30) and (4.20±0.28)°(P＜0.05).After the laser treatment,Ulcer healing time was(4.07±0.82)days in Nd∶YAG laser group,which was significantly shortened than the(5.12 ± 0.26)days in CO2 laser group (P ＜0.05).The total effective rate was 100.0％ in Nd∶YAG laser group and 90.0％ in CO2 laser group.Nd∶ YAG laser group of patients showed no obvious reaction.And CO2 laser group has 6 cases of nervous pain,and 7 cases sensitive to smell.Conclusion:Significant effects on the treatment of MiRAU was observed between Nd∶YAG laser and CO2 laser group.By comparison,Nd∶YAG laser has more advantages in shortening the healing time and relieving pain.%目的:比较Nd∶YAG激光和CO2激光治疗轻型复发性阿弗他溃疡短期临床疗效.方法:选取68例临床上确诊为轻型复发性阿弗他溃疡的患者,随机分为2组,其中Nd∶ YAG激光治疗组和CO2激光治疗组各34例.治疗周期3～5 d.应用视觉模拟评分法(VAS)及DP分级法评估并比较两组短期疗效.结果:在激光照射后的第1天、第2天和第3�

Light Emission by Nonequilibrium Bodies: Local Kirchhoff Law

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Jean-Jacques Greffet

2018-04-01

Full Text Available The goal of this paper is to introduce a local form of Kirchhoff law to model light emission by nonequilibrium bodies. While absorption by a finite-size body is usually described using the absorption cross section, we introduce a local absorption rate per unit volume and also a local thermal emission rate per unit volume. Their equality is a local form of Kirchhoff law. We revisit the derivation of this equality and extend it to situations with subsystems in local thermodynamic equilibrium but not in equilibrium between them, such as hot electrons in a metal or electrons with different Fermi levels in the conduction band and in the valence band of a semiconductor. This form of Kirchhoff law can be used to model (i thermal emission by nonisothermal finite-size bodies, (ii thermal emission by bodies with carriers at different temperatures, and (iii spontaneous emission by semiconductors under optical (photoluminescence or electrical pumping (electroluminescence. Finally, we show that the reciprocity relation connecting light-emitting diodes and photovoltaic cells derived by Rau is a particular case of the local Kirchhoff law.

Environmental impact assessment of the industrial estate development plan with the geographical information system and matrix methods.

Science.gov (United States)

Ghasemian, Mohammad; Poursafa, Parinaz; Amin, Mohammad Mehdi; Ziarati, Mohammad; Ghoddousi, Hamid; Momeni, Seyyed Alireza; Rezaei, Amir Hossein

2012-01-01

The purpose of this study is environmental impact assessment of the industrial estate development planning. This cross-sectional study was conducted in 2010 in Isfahan province, Iran. GIS and matrix methods were applied. Data analysis was done to identify the current situation of the region, zoning vulnerable areas, and scoping the region. Quantitative evaluation was done by using matrix of Wooten and Rau. The net score for impact of industrial units operation on air quality of the project area was (-3). According to the transition of industrial estate pollutants, residential places located in the radius of 2500 meters of the city were expected to be affected more. The net score for impact of construction of industrial units on plant species of the project area was (-2). Environmental protected areas were not affected by the air and soil pollutants because of their distance from industrial estate. Positive effects of project activities outweigh the drawbacks and the sum scores allocated to the project activities on environmental factor was (+37). Totally it does not have detrimental effects on the environment and residential neighborhood. EIA should be considered as an anticipatory, participatory environmental management tool before determining a plan application.

Wear resistant PVD-/CVD-dry lubricant coatings for the environmental and innovative production. Subproject 3: dry lubricant coatings - carbon coatings. Final report; Verschleissfeste PVD-/CVD-Trockenschmierstoffschichten fuer die umweltschonende und innovative Fertigung. Teilprojekt 3: Kohlenstoffbasierte Trockenschmierstoffschichten (TSS-C). Abschlussbericht

Energy Technology Data Exchange (ETDEWEB)

Schattke, A.; Hockauf, W.

2002-09-05

The partners Bosch, Metaplas Ionon and Roth and Rau developed dry lubricant coatings on a carbon coating base. The cutting tools used for the testing were developed in former dry cutting projects especially for cutting with minimum quantity lubrication (MQL). The coatings were tested in cutting and metal forming. After tribological testing at the coating companies the deposited coatings were evaluated by machining tests in drilling, thread forming and metal forming at the universities of Darmstadt and Kassel. The best coatings were tested in production field tests (laboratory) or, if possible, in the production at company Bosch and at other end users of the joint project. It was possible to show that carbon coatings are very good at punching and sheet bending. Also at drilling and thread forming in cast iron and low alloyed steels the results are good enough for production. The results at drilling and thread forming in aluminium alloys and high alloyed steels (X90CrMoV18) were not good enough for production under dry conditions. But testing with a reduced amount of MQL (6ml/h) showed better cutting parameters than commercial coatings. Also cutting length and quality of the parts are better. Even with the best coatings it was not possible to make dry massive forming with reduced temperature. At these high temperatures and high surface pressures it was not possible to work without lubricants. (orig.) [German] Im Projekt wurden von den Partnern Bosch, Metaplas Ionon und Roth and Rau Trockenschmierstoffschichten auf Kohlenstoffbasis entwickelt. Diese wurden auf Werkzeuge abgeschieden, deren Geometrien in bereits abgeschlossenen Projekten fuer die Trockenzerspannung mit Minimalmengenschmierung optimiert wurden. Die Schichten sind fuer die Zerspannung und Umformtechnik vorgesehen. An tribologische Tests bei den Beschichtern schlossen sich Filtertests an den Hochschulen Darmstadt und Kassel an, bei denen die Schichten in Bohr-, Gewindeform- und Umformtests untersucht

Environmental Impact Assessment of the Industrial Estate Development Plan with the Geographical Information System and Matrix Methods

Science.gov (United States)

Ghasemian, Mohammad; Poursafa, Parinaz; Amin, Mohammad Mehdi; Ziarati, Mohammad; Ghoddousi, Hamid; Momeni, Seyyed Alireza; Rezaei, Amir Hossein

2012-01-01

Background. The purpose of this study is environmental impact assessment of the industrial estate development planning. Methods. This cross-sectional study was conducted in 2010 in Isfahan province, Iran. GIS and matrix methods were applied. Data analysis was done to identify the current situation of the region, zoning vulnerable areas, and scoping the region. Quantitative evaluation was done by using matrix of Wooten and Rau. Results. The net score for impact of industrial units operation on air quality of the project area was (−3). According to the transition of industrial estate pollutants, residential places located in the radius of 2500 meters of the city were expected to be affected more. The net score for impact of construction of industrial units on plant species of the project area was (−2). Environmental protected areas were not affected by the air and soil pollutants because of their distance from industrial estate. Conclusion. Positive effects of project activities outweigh the drawbacks and the sum scores allocated to the project activities on environmental factor was (+37). Totally it does not have detrimental effects on the environment and residential neighborhood. EIA should be considered as an anticipatory, participatory environmental management tool before determining a plan application. PMID:22272210

A Study on the Compatibility of 3-D Seismic Velocity Structures with Gravity Data of Taiwan

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Horng-Yuan Yen Hsien-Hsiang Hsieh

2010-01-01

Full Text Available The Bouguer anomaly of Taiwan has been revised in this study based on more accurate terrain data provided by the Taiwanese Digital Terrain Model compiled by the Taiwan Forestry Bureau. Three seismic velocity models, those determined by Rau and Wu (1995, Kim et al. (2005, and Wu et al. (2007 respectively, were selected for our study. We converted their velocity models to density models using the relationship between P-wave velocity and rock density proposed by Ludwig et al. (1970 and Barton (1986, and then calculated their corresponding gravity anomalies. According to the correlation coefficient between the Bouguer anomalies calculated from the velocity models and the revised Bouguer anomalies, the Kim et al. model was more compatible with gravity data than the other two velocity models. The differences between the revised gravity anomaly and the calculated gravity anomalies trend toward positive values at elevations higher than 2000 m. This indicates that the velocities at the shallower depths beneath the mountainous area of the three models are overdetermined, i.e., higher than the real velocities. This ratiocination implies that the crustal thickness beneath the Central Range is less than 55 km which was obtained from the velocity models.

Environmental Impact Assessment of the Industrial Estate Development Plan with the Geographical Information System and Matrix Methods

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Mohammad Ghasemian

2012-01-01

Full Text Available Background. The purpose of this study is environmental impact assessment of the industrial estate development planning. Methods. This cross-sectional study was conducted in 2010 in Isfahan province, Iran. GIS and matrix methods were applied. Data analysis was done to identify the current situation of the region, zoning vulnerable areas, and scoping the region. Quantitative evaluation was done by using matrix of Wooten and Rau. Results. The net score for impact of industrial units operation on air quality of the project area was (−3. According to the transition of industrial estate pollutants, residential places located in the radius of 2500 meters of the city were expected to be affected more. The net score for impact of construction of industrial units on plant species of the project area was (−2. Environmental protected areas were not affected by the air and soil pollutants because of their distance from industrial estate. Conclusion. Positive effects of project activities outweigh the drawbacks and the sum scores allocated to the project activities on environmental factor was (+37. Totally it does not have detrimental effects on the environment and residential neighborhood. EIA should be considered as an anticipatory, participatory environmental management tool before determining a plan application.

Environmental Impact Assessment of the Industrial Estate Development Plan with the Geographical Information System and Matrix Methods

International Nuclear Information System (INIS)

Ghasemian, M.; Poursafa, P.; Amin, O.M.; Rezaei, A.H.; Ziarati, M.; Ghoddousi, H.; Momeni, S.A.; Rezaei, A.H.

2012-01-01

Background. The purpose of this study is environmental impact assessment of the industrial estate development planning. Methods. This cross-sectional study was conducted in 2010 in Isfahan province, Iran. GIS and matrix methods were applied. Data analysis was done to identify the current situation of the region, zoning vulnerable areas, and scoping the region. Quantitative evaluation was done by using matrix of Wooten and Rau. Results. The net score for impact of industrial units operation on air quality of the project area was (-3). According to the transition of industrial estate pollutants, residential places located in the radius of 2500 meters of the city were expected to be affected more. The net score for impact of construction of industrial units on plant species of the project area was (-2). Environmental protected areas were not affected by the air and soil pollutants because of their distance from industrial estate. Conclusion. Positive effects of project activities outweigh the drawbacks and the sum scores allocated to the project activities on environmental factor was (+37). Totally it does not have detrimental effects on the environment and residential neighborhood. EIA should be considered as an anticipatory, participatory environmental management tool before determining a plan application

Enhanced multiferroic properties in scandium doped Bi2Fe4O9

International Nuclear Information System (INIS)

Dutta, Dimple P.; Tyagi, A. K.

2013-01-01

Undoped and Sc 3+ doped Bi 2 Fe 4 O 9 nanoparticles have been synthesized using sonochemical method. The phase purity of the samples was checked using powder X-rau diffraction technique. EDS analysis was done to confirm the extent of Sc 3+ doping in the samples. The size and morphology of the nanoparticles have been analyzed using transmission electron microscopy (TEM). The Bi 2 Fe 4 O 9 nanoparticles show a weak ferromagnetic behavior at room temperature, which is quite different from the linear M–H relationship reported for bulk Bi 2 Fe 4 O 9 . This is mainly attributed to the uncompensated moments at the disordered particle surface resulting from the reduced coordination of the surface spins, arising due to lattice strain or oxygen deficiency. Addition of Sc 3+ dopant in varying concentrations in these Bi 2 Fe 4 O 9 nanoparticles, improves their magnetic as well as ferroelectric properties. The leakage current is considerably reduced and electric polarization increases significantly in case of Bi 2 Fe 4(1-x) Sc x O 9 (x = 0.1) nanoparticles. Hence it can be inferred that Sc 3+ doped Bi 2 Fe 4 O 9 nanoparticles shows promise as good multiferroic materials.

Study on radioactive compounds in barites

International Nuclear Information System (INIS)

Cohen, I.M.; Mila, M.I.; Gomez, C.D.

1981-01-01

Radioactive nuclides present in samples of two different types of barite, and showing a great difference in gamma activity, were identified and quantitatively determined. Gamma spectrometry techniques were used for measuring both the natural activity and that induced by neutron activation. The samples, coming from a mine in Araxa, State of Minas Gerais, Brazil, were obtained from the solid residue of a process of niobium separation from a mineral association containing also thorium and uranium. After a period of 25 days, to allow for the reestablishment of the radium-radon equilibrium in the samples, natural activity was measured with a Ge (Li) detector coupled to a multi-channel analyzer. The results were obtained by means of a computer programme applying Covell's method. For activation analysis the samples and standards were irradiated during two hours in the Argentine RA-3 reactor under a flux of approx. 2x10/sup 13/neutrons cm/sup -2/sec/sup -1/ and measured three days thereafter by a method similar to that used for measuring natural activity. It was concluded that the main reason for the difference in radiactivity existing between the two varieties of barites is the different rate of Ra-Th separation, which is also extensive to the Ra-U. (M.E.L.) [es

Coherences and Differences among EU, US and PRC Approaches for Rural Urban Development: Interscalar and Interdisciplinary Analysis

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Roberto De Lotto

2017-03-01

Full Text Available The main goal of this paper is to translate the indexing of a projects’ Data Base, based on EU vocabulary on rural urban development, into different lexicons. Built on the groundwork laid in previous researches, the authors want to enlarge the methodology applied in European Union (EU territory and defined with Rural Architectural Intensification (RAI and Rural Architectural Urbanism (RAU to other contexts, in particular People’s Republic of China (PRC and United States (US, keeping, however, this research at theoretical and methodological definition level. The study of coherences and differences between EU, US and China for rural urban development implies an interscalar and interdisciplinary analysis approach. It must be in complete adherence with national and specific directives and objectives in all the different selected countries. The analysis of main literature and national and federal laws of Europe, United States and China allows the definition of the Strategic Objectives and Main Goals for Rural Development identifying indicators and criteria. They permit to measure intensification’s outcomes in a qualitative way through the description and interpretation of operative tools for architecture and landscape design. Finally, the organized database and the territorial results can be considered as guidelines to support decision makers in rural-urban context. In addition, the whole procedure presented along with the projects’ database is a significant research package for further interdisciplinary applications.

Anxiety, Depression and Quality of Life among Patients with Recurrent Aphthous Ulcers.

Science.gov (United States)

Zwiri, Abdalwahab M A

2015-02-01

Recurrent aphtous ulcers (RAUs) are of the most painful and common oral mucosal diseases with uncertain etiology including trauma, genetics, stress, immune dysfunction, and vitamin deficiencies. The aim of this study was to investigate the relationship between oral health impacts, patients' oral health-related quality of life and anxiety and depression in patients with recurrent aphtous ulcers. Sixty patients were diagnosed RAU (30 men and 30 women, mean age: 29.5 ± 9.6 years) and sixty controls, who matched the patients with age and gender, participated in this study. Participants completed hospital anxiety and depression (HAD) scale, oral health impact profile (OHIP-14), and United Kingdom oral health related quality of life measure (OHQoL-UK). The statistically significance levels were set at p ≤ 0.05. Both patients and controls reported comparable depression and anxiety scores (p > 0.05). Ulcer patients reported worse oral health impacts and inferior quality of life in comparison to controls (p relationships were detected between HAD scores on one hand and OHIP and/or OHQoL-UK on the other hand (p > 0.05). Recurrent aphthous ulcers increase the negative oral health impacts on patients and consequently cause inferior quality of life. Stressful situations and conditions (including anxiety and depression) were not related to oral health impacts and quality of life in patients with RAUs.

Erythrocyte membrane-coated gold nanocages for targeted photothermal and chemical cancer therapy

Science.gov (United States)

Zhu, Dao-Ming; Xie, Wei; Xiao, Yu-Sha; Suo, Meng; Zan, Ming-Hui; Liao, Qing-Quan; Hu, Xue-Jia; Chen, Li-Ben; Chen, Bei; Wu, Wen-Tao; Ji, Li-Wei; Huang, Hui-Ming; Guo, Shi-Shang; Zhao, Xing-Zhong; Liu, Quan-Yan; Liu, Wei

2018-02-01

Recently, red blood cell (RBC) membrane-coated nanoparticles have attracted much attention because of their excellent immune escapability; meanwhile, gold nanocages (AuNs) have been extensively used for cancer therapy due to their photothermal effect and drug delivery capability. The combination of the RBC membrane coating and AuNs may provide an effective approach for targeted cancer therapy. However, few reports have shown the utilization of combining these two technologies. Here, we design erythrocyte membrane-coated gold nanocages for targeted photothermal and chemical cancer therapy. First, anti-EpCam antibodies were used to modify the RBC membranes to target 4T1 cancer cells. Second, the antitumor drug paclitaxel (PTX) was encapsulated into AuNs. Then, the AuNs were coated with the modified RBC membranes. These new nanoparticles were termed EpCam-RPAuNs. We characterized the capability of the EpCam-RPAuNs for selective tumor targeting via exposure to near-infrared irradiation. The experimental results demonstrate that EpCam-RPAuNs can effectively generate hyperthermia and precisely deliver the antitumor drug PTX to targeted cells. We also validated the biocompatibility of the EpCam-RAuNs in vitro. By combining the molecularly modified targeting RBC membrane and AuNs, our approach provides a new way to design biomimetic nanoparticles to enhance the surface functionality of nanoparticles. We believe that EpCam-RPAuNs can be potentially applied for cancer diagnoses and therapies.

La decisió artística i les seves condicions de producció: parlant amb un equip de rodatge Artistic Decision-making and its conditions for production: Talking to a TV crew La decisió artística i les seves condicions de producció: parlant amb un equip de rodatge

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Dafne Muntanyola Saura

2012-07-01

Full Text Available

Em proposo destriar les condicions de producció de la mirada televisiva. La meva tasca sociològica en estudiar les pràctiques i decisions artístiques rau en fer explícits els contextos socials d’aquesta activitat professional. Expliquem aquesta pràctica tant discursiva com pragmática a partir d’una anàlisi de contingut temàtic de 20 entrevistes a participants d’un rodatge televisiu. Amb l’aplicació del programa ATLAS.ti, s’han definit les pràctiques socials que constitueixen el motor de reproducció de la distinció social. Aquesta anàlisi qualitiativa m’ha permès concretar operadors teòrics polivalents com són habitus i capital (Bourdieu, 1979; 1994; 1998, sovint massa ambigus per a ser emprats empíricament. La font de legitimitat de les decisions artístiques prové d’un tipus d’habitus artístic, que hem anomenat habitus televisiu. La dimensió relacional i instrumental del rodatge passa a un segon pla pels entrevistats. En definitiva, contractes de dependència que s’amaguen mitjançant l’exercici de la violència simbòlica quotidiana configuren les identitats professionals del món de la televisió.

My aim is to explain the production conditions of a TV crew. My sociological task is to study the practices and artistic decision-making in order to make explicit the social contexts of this activity. I will explain these discursive and pragmatic practices with the thematic content analysis of 20 interviews to participants of a TV production set. Thanks to the ATLAS.ti I defined the social practices that make the reproduction of social distinction possible. Qualitative analysis has made polivalent terms such as habitus and capital (Bourdieu, 1979; 1994; 1998, otherwise too ambiguous to be applied empirically, more specific. The legitimacy of artistic decision-making arises from a type of artistic habitus, which we defined as the “TV habitus”. The interviewees consider the relational and

A study of the attachment of thoron decay products to aerosols using an aerosol centrifuge

International Nuclear Information System (INIS)

Balakrishnan, V.

1979-01-01

The physical attachment of radioactive decay products (particulate, not gas) to polydisperse fluorescein aerosal particles in two size ranges 0.1 μM-0.33 μM radius and 0.25 μM-1.35 μM radius has been studied under dynamic conditions with a view to find the fraction of thoron decay products attached to the aerosals and the particle size distribution of the host aerosols in the atmosphere of uranium mines. The experimental set-up and procedure are described. An aerosol cloud of fluorescein was introduced into a reaction chamber containing a steady source of thoron and decay products were allowed to interact and attach to the aerosols in the chamber. To simulate conditions normally encountered in uranium mining and milling operations, the concentration of aerosol particles was kept high as compared to the number of decay products. The Lovelace Aerosol Particle Separator, which is an advanced, continuous centrifugal aerosol separator, was used to sample and separate the tagged aerosols into various size groups. The radioactivity associated with each group was determined. The results show the same dependence of attachment of decay products on the size of aerosol particles as predicted by the diffusion theory proposed by Lassen and Rau (1960), even though the experimental conditions of the present study do not conform to those required to satisfy the above mentioned diffusion theory. The method employed in this work to study attachment is reproducible and simple and can be adopted in uranium and thorium mines and associated processing industries. (M.G.B.)

Instrumentalització de les passions, regulació social i transcendència del poder en el Hanfeizi

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Albert Galvany

2008-05-01

Full Text Available Aquest article té el propòsit fonamental de presentar, encara que sigui de manera esquemàtica, alguns dels elements fonamentals sobre els quals se sosté la proposta política i filosòfica del Hanfeizi, un dels texts més importants de la Xina preimperial. Aquest antic text resulta especialment evocador per al pensament en la mesura que representa una veritable excepció en la teoria política clàssica. Mentre que les principals propostes sociopolítiques, més o menys utòpiques, articulades tant per pensadors occidentals com xinesos, consideren que el major obstacle per a la consecució d'aquests projectes rau en la naturalesa passional de l'ésser humà, l'obra atribuïda tradicionalment a Han Fei defensa que només és possible obtenir un cos social ordenat gràcies precisament a aquesta dimensió passional. A partir d'aquest eix argumental, el nostre article no solament tractarà d'aclarir la manera concreta en la qual es legitima i organitza aquest singular sistema ideològic, sinó que també s'esforçarà a posar de manifest els vincles ideològics comuns entre la concepció autoritària del Hanfeizi i alguns dels aspectes més essencials del liberalisme econòmic tal com es presenten en l'obra d'Adam Smith. Text complet (PDF Dossier complet (PDF

RUTHERFORD APPLETON: What's in a name?!

International Nuclear Information System (INIS)

Anon.

1995-01-01

Full text: The initials 'RAU are well known in the world of particle physics, but recently the official name of the Laboratory has undergone several transmogrifications. To further complicate matters, the funding body for Particle Physics within the UK has changed too! On 1 April 1994 the Rutherford Appleton Laboratory combined with the Daresbury Laboratory to become a combined laboratory known as the Daresbury and Rutherford Appleton Laboratories (DRAL). At the same time the old Science and Engineering Research Council (SERC) was wound up, and funding was channelled through the newly formed Particle Physics and Astronomy Research Council (PPARC). Also, and just for an interim period, DRAL became part of the new Engineering and Physical Sciences Research Council (EPSRC). One year later a more profound change occurred when DRAL became a Research Council in its own right, and the legal entity created by Royal Charter was named The Council for the Central Laboratory of the Research Councils', abbreviated to CCLRC. On 1 April 1995, DRAL became The Central Laboratory of the Research Councils', and the abbreviation CLRC may be used. In spite of the changes to the official name, the laboratory sited at Chilton, The DAPNIA (Saclay, France) and Argonne transportable polarized target used in 1989- 1990 for a Fermi lab experiment has been used in a new experiment at Dubna. Gilles Durand from DAPNIA (right) and Yuri Usov of Dubna's Joint Institute for Nuclear Research (JINR) were responsible for construction. Oxfordshire, will continue to be known as the Rutherford Appleton Laboratory, or RAL

List of Organizing Committees and Sponsors

Science.gov (United States)

2012-03-01

Organizers DIRECTORS Maria L CalvoPresident of International Commission for Optics, Spain Aram V PapoyanDirector of Institute for Physical Research of NAS, Armenia HEADS OF PROJECT Tigran Dadalyan YSU, Armenia Artsrun MartirosyanIPR, Armenia COORDINATOR Narine GevorgyanIPR, Armenia / ICTP, Italy MANAGERS Paytsar MantashyanIPR, Armenia Karen VardanyanIPR, Armenia INTERNATIONAL ADVISORY COMMITTEE Marcis AuzinshLatvia Roland AvagyanArmenia Tapash ChakrabortyCanada Yuri ChilingaryanArmenia Eduard KazaryanArmenia Albert KirakosyanArmenia Radik KostanyanArmenia Avinash PandeyIndia Marat SoskinUkraine INTERNATIONAL PROGRAM COMMITTEE David Sarkisyan (Chair)Armenia Roman AlaverdyanArmenia Dan ApostolRomania Levon AslanyanArmenia Aranya BhattacherjeeIndia Gagik BuniatyanArmenia Vigen ChaltykyanArmenia Roldao Da RochaBrazil Miltcho DanailovItaly Vladimir GerdtRussia Samvel GevorgyanArmenia Gayane GrigoryanArmenia Rafik HakobyanArmenia Takayuki MiyaderaJapan Levon MouradianArmenia Atom MuradyanArmenia Simon RochesterUSA Hayk SarkisyanArmenia Aleksandr VardanyanArmenia LOCAL ORGANIZING COMMITTEE Narek AghekyanArmenia Anahit GogyanArmenia Melanya GrigoryanArmenia Armen HovhannisyanArmenia Lilit HovhannisyanArmenia Tatevik KhachatryanArmenia Astghik KuzanyanArmenia Satenik KuzanyanArmenia Vladimir LazarevRussia Lilit MantashyanArmenia Hripsime MkrtchyanArmenia Pavel MuzhikyanArmenia Wahi NarsisianArmenia Sahak OrdukhanyanArmenia Anna ReymersArmenia Narine TorosyanArmenia The Symposium was organized by YSU & NAS SPIE Armenian Student Chapter Institute for Physical Research (IPR) of National Academy of Sciences (NAS) Russian-Armenian (Slavonic) University (RAU) LT-PYRKAL cjsc Yerevan State University (YSU) Official Sponsors of the Symposium LT-PYRKAlRussian ArmenianSPIE LT-PYRKAL cjscRussian-Armenian UniversityYSU & NAS SPIE Student Chapter Further sponsors NFSATICTPSCSADevout Generation National Foundation of Science and Advanced TechnologiesThe Abdus Salam International Centre

Valeurs bibliophiles dans la langue française presentes en Bucovine (XVII-eme-XVIII-eme siecles

Directory of Open Access Journals (Sweden)

Olimpia Mitric

2011-07-01

Full Text Available Comme on le sait, la Moldavie a été la plus réceptive des trois provinces roumaines à la culture française. Dans cette province-ci, les contacts avec le mouvement d'idées européen ont été plus puissants. La lutte d'affirmation nationale a mené à l'augmentation de la conscience politique de la société moldave et à une participation plus accentuée à la vie politique. Le goût pour la lecture a évolue, aussi, pendant que la mentalité a commencé se transformer; on sollicite et ensuite traduit les oeuvres dans lesquelles apparaissent les idées sociales politiques, l'histoire universelle, la géographie, les conquêtes de la technique ou la littérature philosophique-moralisatrice. Les plus anciennes copies en roumain des oeuvres traduites du français, qui se trouvent dans nos bibliothèques datent de la fin du XVIII-ème siècle. Celles-ci sont des traductions de Voltaire, Marmontel, Ambrosius Marlianus, Francesco Loredano, Fénélon, Johan Thuresson Oxenstiern, Gabriel Pérau, Alain Réné Lesage, André Guillaume Constant d' Orville. Le livre imprimé (inclusivement jusqu' en 1800 provient des ateliers typographiques de Paris, Londres, Genève, Regensburg, Basel et Berlin. Le plus ancien exemplaire, Le tableau de L'Europe, est imprimé à Paris, en 1651. Pour ceux qui s'y intéressent, nous avons organisé la liste de ces livres, sur catégories de détenteurs.

Does the debris disk around HD 32297 contain cometary grains?

Energy Technology Data Exchange (ETDEWEB)

Rodigas, Timothy J.; Hinz, Philip M.; Bailey, Vanessa; Defrere, Denis; Leisenring, Jarron; Schneider, Glenn; Skemer, Andrew J.; Vaitheeswaran, Vidhya [Steward Observatory, The University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Debes, John H. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Mamajek, Eric E.; Pecaut, Mark J. [Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627-0171 (United States); Currie, Thayne [University of Toronto, 50 St. George Street, Toronto, ON M5S 1A1 (Canada); De Rosa, Robert J.; Ward-Duong, Kimberly [School of Earth and Space Exploration, Arizona State University, P.O. Box 871404, Tempe, AZ 85287-1404 (United States); Hill, John M. [Large Binocular Telescope Observatory, University of Arizona, Tucson, AZ 85721 (United States); Skrutskie, Michael, E-mail: rodigas@as.arizona.edu [Department of Astronomy, University of Virginia, 530 McCormick Road, Charlottesville, VA 22903 (United States)

2014-03-01

We present an adaptive optics imaging detection of the HD 32297 debris disk at L' (3.8 μm) obtained with the LBTI/LMIRcam infrared instrument at the Large Binocular Telescope. The disk is detected at signal-to-noise ratio per resolution element ∼3-7.5 from ∼0.''3 to 1.''1 (30-120 AU). The disk at L' is bowed, as was seen at shorter wavelengths. This likely indicates that the disk is not perfectly edge-on and contains highly forward-scattering grains. Interior to ∼50 AU, the surface brightness at L' rises sharply on both sides of the disk, which was also previously seen at Ks band. This evidence together points to the disk containing a second inner component located at ≲50 AU. Comparing the color of the outer (50 <r/AU <120) portion of the disk at L' with archival Hubble Space Telescope/NICMOS images of the disk at 1-2 μm allows us to test the recently proposed cometary grains model of Donaldson et al. We find that the model fails to match this disk's surface brightness and spectrum simultaneously (reduced chi-square = 17.9). When we modify the density distribution of the model disk, we obtain a better overall fit (reduced chi-square = 2.87). The best fit to all of the data is a pure water ice model (reduced chi-square = 1.06), but additional resolved imaging at 3.1 μm is necessary to constrain how much (if any) water ice exists in the disk, which can then help refine the originally proposed cometary grains model.

Measurement-induced localization of relative degrees of freedom

International Nuclear Information System (INIS)

Cable, Hugo; Knight, Peter L.; Rudolph, Terry

2005-01-01

We present a comprehensive study, using both analytical and numerical methods, of measurement-induced localization of relational degrees of freedom. Looking first at the interference of two optical modes, we find that the localization of the relative phase can be as good for mixed states--in particular, for two initially Poissonian or thermal states--as for the well-known case of two Fock states. In a realistic setup the localization for mixed states is robust and experimentally accessible, and we discuss applications to superselection rules. For an ideal setup we show how a relational Schroedinger cat state emerges and investigate circumstances under which such a state is destroyed. In our second example we consider the localization of relative atomic phase between two Bose Einstein condensates, looking particularly at the build up of spatial interference patterns, an area which has attracted much attention since the work of Javanainen and Yoo. We show that the relative phase localizes much faster than was intimated in previous studies focusing on the emerging interference pattern itself. Finally, we explore the localization of relative spatial parameters discussed in recent work by Rau, Dunningham, and Burnett. We retain their models of indistinguishable scattering but make different assumptions. In particular we consider the case of a real distant observer monitoring light scattering off two particles, who records events only from a narrow field of view. The localization is only partial regardless of the number of observations. This paper contributes to the wider debate on relationism in quantum mechanics, which treats fundamental concepts - reference frames and conservation laws - from a fully quantum and operational perspective

Uses of radioactive isotopes and radiation sources in biological studies in U. A. R; Utilisation des radioisotopes et des sources de rayonnement dans les etudes biologiques en RAU

Energy Technology Data Exchange (ETDEWEB)

Hashish, S. E. [Radiobiology Department, U. A. R. Atomic Energy Establishment, Cairo, United Arab Republic (Egypt)

1970-01-15

An attempt is made to give examples rather than a review of the uses of radioactive isotopes and radiation sources in biological studies in U.A.R. Studies along these lines started early in 1955 and are still progressing. The prospects of future developments and improvements are unlimited. The studies are classified according to the radio technique adopted. The techniques so far used in U.A.R. include all the techniques known elsewhere. Some detailed modifications and combinations of more than one technique have been successfully introduced. Both in basic and applied biological studies, one or more of the following techniques have been applied, namely tracer technique, isotopic dilution analysis, autoradiography, radiochromatography and electrophoresis, double or multi-bioassays, radioactivation analysis, neutron absorption analysis, and use of different radiation source for somatic and/or genetic effect studies. Mass spectrometry for stable isotopic studies in the field of biology has been recently used. Studies undertaken in the applied fields of biology e. g, in medicine (diagnosis and therapy) and agriculture (soil, plant and animal) have proved extremely valuable from the practical and developmental points of view. (author) [French] Le mémoire a pour objet d'illustrer plutôt que d'exposer systématiquement les utilisations des radioisotopes et des sources de rayonnement dans des études biologiques en République Arabe Unie. Ces études, entreprises au début de 1955, se poursuivent. Les possibilités de développement et de perfectionnement sont illimitées. Les études sont classées d'après la radiotechnique adoptée. Les techniques régulièrement utilisées jusqu' à présent en République Arabe Unie couvrent toute la gamme des techniques connues ailleurs. On a réussi à apporter des modifications de détail et à combiner plusieurs techniques. Dans les études de biologie tant fondamentale qu' appliquée, une ou plusieurs des techniques suivantes ont été appliquées: technique utilisant un indicateur, analyse par dilution isotopique, autoradiographie, radiochromatographie et électrophorèse, bioanalyse double ou multiple, analyse par radioactivation, analyse par absorption de neutrons et utilisation de diverses sources de rayonnement dans des études sur les effets somatiques et génétiques. On a récemment appliqué la spectrométrie de masse dans des études sur les isotopes stables en biologie. Les travaux réalisés dans le domaine des applications de la biologie - notamment en médecine (diagnostic et thérapie) - et de l'agriculture (rapports sol, plante et animal) se sont révélés extrêmement utiles tant du point de vue pratique qu' expérimental. (author)

Changes in opal flux and the rain ratio during the last 50,000 years in the equatorial Pacific

Science.gov (United States)

Richaud, Mathieu; Loubere, Paul; Pichat, Sylvain; Francois, Roger

2007-03-01

Changes in the orgC/CaCO 3 ratio in particles sinking from the surface to the deep ocean have the potential to alter the atmospheric pCO 2 over the span of a glacial/interglacial cycle. Recent paleoceanographic and modern observational studies suggest that silica is a key factor in the global carbon biogeochemical cycle that can influence the flux ratio, especially at low latitudes, through "silicic acid leakage" [Brzezinski, M., Pride, C., Franck, M., Sigman, D., Sarmiento, J., Matsumoto, K., Gruber, N., Rau, R., Coale, K., 2002. A switch from Si(OH) 4 to NO3- depletion in the glacial Southern Ocean. Geophysical Research Letters 29, 5]. To test this hypothesis, we reconstruct biogenic fluxes of CaCO 3, orgC and Si for three equatorial Pacific cores. We find evidence that a floral shift from a SiO 2-based community to a CaCO 3-based occurred, starting in mid-marine isotope stage (MIS) 3 (24-59 cal. ka) and declining toward MIS 2 (19-24 cal. ka). This could reflect the connection of the Peru upwelling system to the subantarctic region, and we postulate that excess silica was transported from the subantarctic via the deep Equatorial Undercurrent to the eastern equatorial Pacific. In the eastern equatorial Pacific only, we document a significant decrease in rain ratio starting mid-MIS 3 toward MIS 2. This decrease is concomitant with a significant decrease in silica accumulation rates at the seabed. This pattern is not observed in the Pacific influenced by equatorial divergence and shallow upwelling, where all reconstructed fluxes (CaCO 3, orgC, and opal) increase during MIS 2. We conclude that the overall calcium carbonate pump weakened in the EEP under Peru upwelling influence.

Staatliche Kapitalhilfe für Unternehmen

Directory of Open Access Journals (Sweden)

Peter Collin

2009-01-01

Full Text Available A wide conception of state administration would also include the science of economics. With the triumphal progress of the doctrine of Adam Smith from the end of the 18th century this part of state administration also came within the sphere of influence of the national economy. This formed a theoretical partial discipline, which subsumed the determinants of the development of wealth. This theoretical part, the pure theory of political economy, contained those principles which should determine the practical part, the practice of economics. On the other hand, the theory of political economy considered practice in the process of the drafting of economic postulates. Both partial disciplines interacted and influenced the doctrines of state administration. This process will be described by means of writers influenced by the work of Adam Smith (Sartorius, Kraus, Lüder, Soden, Jakob, Lotz, Rau and using the example of governmental financial support for private enterprises. All these authors shared the doctrine of the absence of state intervention. But the state was nevertheless considered responsible for the prosperity of the country and had to intervene if private means failed and if the public welfare was to be protected. Based on these assumptions, criteria for the justification of state assistance were developed. Financial support was acceptable as sponsorship for innovation, as temporary aid in times of crisis and as an instrument of socio-political stabilization. The same types of financial aid were practiced by government. In the administration of states based on the rule of law (Robert von Mohl, national-economic and judicial principles moved in the same direction. The justifications of financial aid were concordant with the economic justifications. Thus the shaping of the national economy took on a juridical character.

Predicting recurrent aphthous ulceration using genetic algorithms-optimized neural networks

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Najla S Dar-Odeh

2010-05-01

Full Text Available Najla S Dar-Odeh1, Othman M Alsmadi2, Faris Bakri3, Zaer Abu-Hammour2, Asem A Shehabi3, Mahmoud K Al-Omiri1, Shatha M K Abu-Hammad4, Hamzeh Al-Mashni4, Mohammad B Saeed4, Wael Muqbil4, Osama A Abu-Hammad1 1Faculty of Dentistry, 2Faculty of Engineering and Technology, 3Faculty of Medicine, University of Jordan, Amman, Jordan; 4Dental Department, University of Jordan Hospital, Amman, JordanObjective: To construct and optimize a neural network that is capable of predicting the occurrence of recurrent aphthous ulceration (RAU based on a set of appropriate input data.Participants and methods: Artificial neural networks (ANN software employing genetic algorithms to optimize the architecture neural networks was used. Input and output data of 86 participants (predisposing factors and status of the participants with regards to recurrent aphthous ulceration were used to construct and train the neural networks. The optimized neural networks were then tested using untrained data of a further 10 participants.Results: The optimized neural network, which produced the most accurate predictions for the presence or absence of recurrent aphthous ulceration was found to employ: gender, hematological (with or without ferritin and mycological data of the participants, frequency of tooth brushing, and consumption of vegetables and fruits.Conclusions: Factors appearing to be related to recurrent aphthous ulceration and appropriate for use as input data to construct ANNs that predict recurrent aphthous ulceration were found to include the following: gender, hemoglobin, serum vitamin B12, serum ferritin, red cell folate, salivary candidal colony count, frequency of tooth brushing, and the number of fruits or vegetables consumed daily.Keywords: artifical neural networks, recurrent, aphthous ulceration, ulcer

Analysis of second order harmonic distortion due to transmitter non-linearity and chromatic and modal dispersion of optical OFDM SSB modulated signals in SMF-MMF fiber links

Science.gov (United States)

Patel, Dhananjay; Singh, Vinay Kumar; Dalal, U. D.

2017-01-01

Single mode fibers (SMF) are typically used in Wide Area Networks (WAN), Metropolitan Area Networks (MAN) and also find applications in Radio over Fiber (RoF) architectures supporting data transmission in Fiber to the Home (FTTH), Remote Antenna Units (RAUs), in-building networks etc. Multi-mode fibers (MMFs) with low cost, ease of installation and low maintenance are predominantly (85-90%) deployed in-building networks providing data access in local area networks (LANs). The transmission of millimeter wave signals through the SMF in WAN and MAN, along with the reuse of MMF in-building networks will not levy fiber reinstallation cost. The transmission of the millimeter waves experiences signal impairments due to the transmitter non-linearity and modal dispersion of the MMF. The MMF exhibiting large modal dispersion limits the bandwidth-length product of the fiber. The second and higher-order harmonics present in the optical signal fall within the system bandwidth. This causes degradation in the received signal and an unwanted radiation of power at the RAU. The power of these harmonics is proportional to the non-linearity of the transmitter and the modal dispersion of the MMF and should be maintained below the standard values as per the international norms. In this paper, a mathematical model is developed for Second-order Harmonic Distortion (HD2) generated due to non-linearity of the transmitter and chromatic-modal dispersion of the SMF-MMF optic link. This is also verified using a software simulation. The model consists of a Mach Zehnder Modulator (MZM) that generates two m-QAM OFDM Single Sideband (SSB) signals based on phase shift of the hybrid coupler (90° and 120°). Our results show that the SSB signal with 120° hybrid coupler has suppresses the higher-order harmonics and makes the system more robust against the HD2 in the SMF-MMF optic link.

Cross-sectional and longitudinal associations of different sedentary behaviors with cognitive performance in older adults.

Directory of Open Access Journals (Sweden)

Emmanuelle Kesse-Guyot

Full Text Available The deleterious health effects of sedentary behaviors, independent of physical activity, are increasingly being recognized. However, associations with cognitive performance are not known.To estimate the associations between different sedentary behaviors and cognitive performance in healthy older adults.Computer use, time spent watching television (TV, time spent reading and habitual physical activity levels were self-reported twice (in 2001 and 2007 by participants in the SUpplémentation en Vitamines et MinérauX (SU.VI.MAX and SU.VI.MAX2 study. Cognitive performance was assessed at follow-up (in 2007-2009 via a battery of 6 neuropsychological tests used to derive verbal memory and executive functioning scores. Analyses (ANCOVA were performed among 1425 men and 1154 women aged 65.6 ± 4.5 at the time of the neuropsychological evaluation. We estimated mean differences with 95% confidence intervals (95%CI in cognitive performance across categories of each type of sedentary behavior.In multivariable cross-sectional models, compared to non-users, participants using the computer for >1 h/day displayed better verbal memory (mean difference=1.86; 95%CI: 0.95, 2.77 and executive functioning (mean difference=2.15; 95%CI: 1.22, 3.08. A negative association was also observed between TV viewing and executive functioning. Additionally, participants who increased their computer use by more than 30 min between 2001 and 2007 showed better performance on both verbal memory (mean difference=1.41; 95%CI: 0.55, 2.27 and executive functioning (mean difference=1.41; 95%CI: 0.53, 2.28 compared to those who decreased their computer use during that period.Specific sedentary behaviors are differentially associated with cognitive performance. In contrast to TV viewing, regular computer use may help maintain cognitive function during the aging process.clinicaltrial.gov (number NCT00272428.

Geologic Map of the Cascade Head Area, Northwestern Oregon Coast Range (Neskiwin, Nestucca Bay, Hebo, and Dolph 7.5 minute Quadrangles)

Science.gov (United States)

Snavely, Parke D.; Niem, Alan; Wong, Florence L.; MacLeod, Norman S.; Calhoun, Tracy K.; Minasian, Diane L.; Niem, Wendy

1996-01-01

The geology of the Cascade Head area bridges the geology in the Tillamook Highlands to the north (Wells and others, 1994; 1995) with that of the Newport Embayment on the south (Snavely and others, 1976 a,b,c). The four 7.5-minute quadrangles (Neskowin, Nestucca Bay, Hebo, and Dolph) which comprise the Cascade Head area include significant stratigraphic, structural, and igneous data that are essential in unraveling the geology of the northern and central part of the Oregon Coast Range and of the adjacent continental shelfEarlier studies (Snavely and Vokes, 1949) were of a broad reconnaissance nature because of limited access in this rugged, densely forested part of the Siuslaw National Forest. Also, numerous thick sills of late middle Eocene diabase and middle Miocene basalt mask the Eocene stratigraphic relationships. Previous mapping was hampered by a lack of precise biostratigraphic data. However, recent advances in biostratigraphy and radiometric age dating and geochemistry have provided the necessary tools to decipher stratigraphic and structural relationships in the Eocene sedimentary and volcanic rock sequences (W.W. Rau, personal communication, 1978 to 1988; Bukry and Snavely, 1988). Many important stratigraphic and igneous relationships are displayed within the Casacde Head area: (1) turbidite sandstone of the middle Eocene Tyee Formation, which is widespread in the central and southern part of the Oregon Coast Range (Snavely and others, 1964), was not deposited in the western part of the Cascade Head, and is of limited extent north of the map area (Wells and others, 1994); (2) the late middle Eocene Yamhill Formation, which crops out along the west and east flank of the Oregon Coast Range, overlaps older strata and overlies an erosional unconformity on the lower Eocene Siletz River Volcanics (Snavely and others, 1990; 1991); (3) thick sills of late middle Eocene diabase (43 Ma) are widespread in the Cascade Head area and also form much of the eastern

The radioactive equilibrium and determination methods for ratio e Ra/U; Desequilibrio Radiactivos-1. Metodo {sub {beta}}-{gamma}. Determinacion de la razon eRa/U. Valoracion del contenido en U{sub 3}O{sub 8}

Energy Technology Data Exchange (ETDEWEB)

Mingarro, E

1966-07-01

The main problems concerning the radioactive non-equilibrium on minerals and a simultaneous counting procedure for {beta}- and {gamma}- activities developed to solve those problems, are described. (Author)

Euroopa Parlamendi ja Nõukogu direktiivi 2005/60/EÜ rahandussüsteemi rahapesu ja terrorismi rahastamise eesmärgil kasutamise vältimise ülevõtmine Baltimaades : [magistritöö] / Katrin Kuusik ; Tartu Ülikool, õigusteaduskond ; juhendaja: Rau

Index Scriptorium Estoniae

Kuusik, Katrin, 1984-

2009-01-01

Euroopa Parlamendi ja Nõukogu direktiivi 2005/60/EÜ kujunemisest ja olemusest, EL liikmesriigi tegevusest direktiivi siseriiklikusse õigusessa ülevõtmisel, ülevõtmisest Balti riikide õigusesse

Study on the radioactivity and soil-to-plant transfer factor of 226Ra, 234U and 238U radionuclides in irrigated farms from the northwestern Saudi Arabia

International Nuclear Information System (INIS)

Al-Hamarneh, Ibrahim F.; Alkhomashi, N.; Almasoud, Fahad I.

2016-01-01

The present study addresses the soil-to-plant transfer factors (TFs) of 226 Ra, 234 U and 238 U for 13 types of vegetables and agricultural crops planted under semi-arid environment in the northwestern part of Saudi Arabia. Crop plants along with plant-growing soils were collected from selected farms, which are irrigated from the non-renewable Saq aquifer, and investigated for their radioactivity content by means of alpha spectrometry after applying a radiochemical separation procedure. Hence, TF data for plant roots, green parts (stem and leaves) and fruits were calculated and contrasted to those reported in the literature. Substantial differences were observed in the TFs of Ra and U radioisotopes among plant species. In crop fruits, eggplant exhibited the highest uptake of 226 Ra (TF value of 0.11), while beans (0.16) have the highest TF for 234 U and 238 U. The geometric mean TF values indicated that the crop roots tend to accumulate Ra and U about four to six-folds higher than fruits. The relation between TF values and soil concentrations showed a weak correlation. Activity ratios between radionuclides in crop plants indicated the preferential translocation of U in fruits than Ra even though Ra is more available for root uptake. The fruit/root (F/R) ratios obtained for the investigated plants shown that pepper had the smallest F/R ratios (0.07 ± 0.01, 0.12 ± 0.02 and 0.11 ± 0.02 for 226 Ra, 234 U and 238 U, respectively), while the highest F/R ratios were observed in potatoes (0.71 ± 0.15, 0.44 ± 0.10 and 0.40 ± 0.08 for 226 Ra, 234 U and 238 U, respectively). The TF and F/R ratios data of natural radionuclides in the study region can hopefully improve the scientific knowledge for future studies. - Highlights: • Ra and U isotopes were measured in soils and plant crops in farms in Saudi Arabia. • Ra and U activities in plant roots (R) slightly exceeded that in their fruits (F). • Ra/U activity ratios showed preferential translocation of U

Structure-Function Relationships in the Gas-Sensing Heme-Dependent Transcription Factors RcoM and DNR

Science.gov (United States)

Bowman, Hannah E.

regulates part of the nitrate respiration pathway. P. aeruginosa uses this pathway to evade host immune response, especially in cystic fibrosis patients. Previous work makes a strong case for the presence of a heme cofactor in DNR; however, attempts to express large quantities of holo-protein have proven unsuccessful. Chapter 4 outlines strategies used to develop a suitable expression protocol. While not entirely successful, the experiments provide a firm foundation for future research on this protein. During the 2015--2016 school year, I conducted educational psychology research as a project assistant in Prof. Martina Rau's lab. She focuses on understanding how students use visual representations and technology to learn chemistry. Chapter 5 summarizes a study we conducted in CHEM 109 to test whether having a computer provide immediate feedback on wedge-dash drawings as well as prompts to collaborate in lab would lead to learning gains. The effect of the intervention was subtle, but statistically significant.

A 4-year non-randomized comparative phase-IV study of early rheumatoid arthritis: integrative anthroposophic medicine for patients with preference against DMARDs versus conventional therapy including DMARDs for patients without preference

Directory of Open Access Journals (Sweden)

Hamre HJ

2018-03-01

Full Text Available Harald J Hamre,1 Van N Pham,2 Christian Kern,3 Rolf Rau,4 Jörn Klasen,3 Ute Schendel,5 Lars Gerlach,6 Attyla Drabik,2 Ludger Simon6,† 1Institute for Applied Epistemology and Medical Methodology at the Witten/Herdecke University, Freiburg, Germany; 2Institute of Statistics in Medicine, Universitätsklinikum Düsseldorf, Düsseldorf, Germany; 3Department of Integrative Medicine, Asklepios Westklinikum, Hamburg, Germany; 4Department of Rheumatology, Evangelisches Fachkrankenhaus Ratingen, Ratingen, Germany; 5Department of Rheumatology, m&i-Fachklinik Bad Pyrmont, Bad Pyrmont, Germany; 6Department of Internal Medicine and Gastroenterology, Filderklinik, Filderstadt, Germany †Dr Ludger Simon passed away on June 10, 2016 Background: While disease-modifying antirheumatic drugs (DMARDs are a mainstay of therapy for rheumatoid arthritis (RA, some patients with early RA refuse DMARDs. In anthroposophic medicine (AM, a treatment strategy for early RA without DMARDs has been developed. Preliminary data suggest that RA symptoms and inflammatory markers can be reduced under AM, without DMARDs. Patients and methods: Two hundred and fifty-one self-selected patients aged 16–70 years, starting treatment for RA of <3 years duration, without prior DMARD therapy, participated in a prospective, non-randomized, comparative Phase IV study. C-patients were treated in clinics offering conventional therapy including DMARDs, while A-patients had chosen treatment in anthroposophic clinics, without DMARDs. Both groups received corticosteroids and nonsteroidal anti-inflammatory drugs (NSAIDs. Primary outcomes were intensity of RA symptoms measured by self-rating on visual analog scales, C-reactive protein, radiological progression, study withdrawals, serious adverse events (SAE, and adverse drug reactions in months 0–48. Results: The groups were similar in most baseline characteristics, while A-patients had longer disease duration (mean 15.1 vs 10.8 months, p<0

Importance-Performance Analysis of Personal Health Records in Taiwan: A Web-Based Survey.

Science.gov (United States)

Rau, Hsiao-Hsien; Wu, Yi-Syuan; Chu, Chi-Ming; Wang, Fu-Chung; Hsu, Min-Huei; Chang, Chi-Wen; Chen, Kang-Hua; Lee, Yen-Liang; Kao, Senyeong; Chiu, Yu-Lung; Wen, Hsyien-Chia; Fuad, Anis; Hsu, Chien-Yeh; Chiu, Hung-Wen

2017-04-27

participants, 56.6%), with a monthly income of less than NT $30,000 (230 of 350 participants, 65.7%), and living in the North Taiwan (236 of 350 participants, 67.4%), with a good self-identified health status (171 of 350 participants, 48.9%). After performing the importance-performance analysis, we found the following: (1) instead of complex functions, people just want to have a platform that can let them integrate and manage their medical visit, health examination, and life behavior records; (2) they do not care whether their PHR is shared with others; and (3) most of the participants think the system security design is not important, but they also do not feel satisfied with the current security design. Overall, the issues receiving the most user attention were the system functions, circulation, integrity, ease of use, and continuity of the PHRs, data security, and privacy protection. ©Hsiao-Hsien Rau, Yi-Syuan Wu, Chi-Ming Chu, Fu-Chung Wang, Min-Huei Hsu, Chi-Wen Chang, Kang-Hua Chen, Yen-Liang Lee, Senyeong Kao, Yu-Lung Chiu, Hsyien-Chia Wen, Anis Fuad, Chien-Yeh Hsu, Hung-Wen Chiu. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 27.04.2017.

Next generation solar energy. From fundamentals to applications

Energy Technology Data Exchange (ETDEWEB)

NONE

2011-07-01

Within the International Conference between 12th and 14th December, 2011 in Erlangen (Federal Republic of Germany) the following lectures were presented: (1) The opto-electronic physics required to approach the Shockley-Queisser efficiency limit (E. Yablonovitch); (2) The Shockley-Queisser-limit and beyond (G.H. Bauer); (3) Designing composite nanomaterials for photovoltaic devices (B. Rech); (4) Light-Material interactions in energy conversion (H. Atwater); (5) Functional imaging of hybrid nanostructures - Visualizing mechanisms of solar energy utilization (L. Lauhon); (6) Are photosynthetic proteins suitable for PV applications (Y. Rosenwaks); (7) Detailed balance limit in photovoltaic systems (U. Rau); (8) Plasmonics and nanophotonics for next generation photovoltaics (E. Garnett); (9) Dispersion, wave propagation and efficiency analysis of nanowire solar cells (B. Witzigmann); (10) Application of nanostructures to next generation photovoltaics - Opportunities and challenges from an industrial research perspective (L. Tsakalakos); (11) Triplet states in organic and organometallic photovoltaic cells (K.S. Schanze); (12) New photoelectrode architectures (J.T. Hupp); (13) Dendrimers for optoelectronic and photovoltaic applications (P. Ceroni); (14) Photon management with luminescent materials (J. Goldschmidt); (15) Economical aspects of next generation solar cell technologies (W. Hoffmann); (16) Scalability in solar energy conversion - First-row transition metal-based chromophores for dye-sensitized solar cells (J. McCusker); (17) Designing organic materials for photovoltaic devices (A. Harriman); (18) Molecular photovoltaics - What can we learn from model studies (B. Albinsson); (19) Porphyrin-sensitised titanium dioxide solar cells (D. Officer); (20) Light-harvesting: Charge separation, and charge-transportation properties of novel materials for organic photovoltaics (H. Imahori); (21) Phthalocyanines for molecular photovoltaics (T. Torres); (22) Photophysics of

X-Ray Microscopy Conference 2016 (XRM 2016)

International Nuclear Information System (INIS)

2017-01-01

enjoyable and rewarding. We look forward to seeing you all at XRM2018 in Saskatoon, Canada. Christoph Rau Editor XRM2016 proceedings Chair XRM2016 conference (paper)

Electron microscopical studies of the common bile duct in reindeer

Directory of Open Access Journals (Sweden)

Timo Rahko

1990-08-01

ähän ilmeisesti limaa sisältäviä jyväsiä solulimassaan. Rau-has- ja pikarisoluissa säännölliset mikrovillukset sen sijaan puuttuvat. Niiden sytoplasman täyttävät runsaat li-mapalloset, joita solut muodostavat hyvin kehittyneessä Golgin laitteessaan erittäen limaa sappikäytävän onte-loon. Erite näkyy hienojyväisenä tai tasa-aineisena seinämiä reunustavana aineena. Poikkeuksellisena havaintona voidaan pitää kerässolujen kerästen tai lähes kokonaisten kerässolujen esiintymistä sappikäytäväon-teloissa mahdollisesti osoituksena solujen vaelluskyvystä. Vaikka epiteelisolut muodostavat lujia solukalvosi-doksia toisiinsa, kerässolut eivät kiinnittyneet muihin soluihin. Ilmeistä on, että pinnallisten epiteelisolujen toiminta on pääasiassa absorptiivista, mutta rauhasepiteelisolut ovat erikoistuneet eritystoimintaan.En elektronmikroskopisk studie av gallgången hos ren.Abstract in Swedish / Sammandrag: Gallgångarnas yt- och körtelepitel bestod av höga epitelceller beklädda med ett regelbundet villusskikt. Intercellulara desmosomer sågs i epitelcellernas parietala cytoplasmamembraner. De intraepiteliala globulara leukocyterna saknade desmosomer eller andra bindningar med nårliggande celler. I de superficiala epitelcellernas apikala cytoplasma fanns elektrontata små kroppar antagligen bestående av mucin. Bägar- och de djupare belagna körtelcellerna inneholl rikligt med stora mucin granulor med ett mindre elektrontatt matrix. Det föreföll som om dessa celler skulle vara sekrerande och de superficiala epitelcellerna absorberande. Kärnen och andra cytoplasmatiska organeller hade egenskaper jamförbara med epitelceller i allmänhet. Gallgången var oftast tom men ibland sågs ett finkornigt amorft material i den. Som en anmarkningsvard observation ansees forekomsten av delar och t.o.m. hela globulara leukocyter i gallgången.

Aportació al coneixement de l’herbari Trèmols de l’Institut Botànic de Barcelona

Directory of Open Access Journals (Sweden)

Gavioli, L.

2013-12-01

��han trobat dos plecs que considerem interessants des d’un punt de vista taxonòmic i/o nomenclatural (isotipus de Silene holzmanii Heldr. ex Boiss. i d’Arenaria minutiflora Loscos. L’interès principal de l’herbari, doncs, rau en la gran diversitat de procedències geogràfiques de les plantes, que fan d’aquesta col·lecció un dels primers «herbaris europeus» de Catalunya.

EDITORIAL Proceedings of the XIV International Conference on Small-Angle Scattering, SAS-2009

Science.gov (United States)

Ungar, Goran; Heenan, Richard

2010-10-01

There are 52 papers in these Proceedings. The papers are divided into 10 thematic sections and a section for invited papers and reviews. The sections and the respective section editors are given below. Section Editor(s) Invited Papers and Reviews Peter Griffiths, Wim Bras, Rudolf Winter Beamlines and Instrumentation Elliot Gilbert, Wim Bras, Nigel Rhodes Theory, Data processing and Modelling Jan Skov Pedersen, Carlo Knupp Biological Systems and Membranes Richard Heenan, Cameron Neylon Ceramics, Glasses and Porous Materials Rudolf Winter Colloids and Solutions Peter Griffiths Hierarchical Structures and Fibres Steve Eichhorn, Karen Edler Metallic and Magnetic Systems Armin Hoell Polymers Patrick Fairclough Time resolved Diffraction, Kinetic and Dynamical Studies João Cabral, Christoph Rau We are grateful to all section editors and the many anonymous referees for their invaluable effort which made the publication of the Proceedings possible. The refereeing process was strict and thorough, some papers were rejected and most were improved. The resulting compendium gives a good overview of recent developments in small-angle X-ray and neutron scattering theory, application, methods of analysis and instrumentation. Thus it should be a useful source of reference for a number of years to come. The papers are a good reflection of the material presented at the meeting. Because of the general high quality of the articles, it was difficult to decide which to highlight and be fair to all contributors. The following in particular have caught the attention of the editors. Highlighted papers A statistical survey of publications reporting the application of SAXS and SANS by Aldo Craievich (paper 012003) is recommended reading for anyone needing convincing about the vibrancy of this scientific field and the ever expanding use of these techniques. Two aspects of coherent X-ray scattering, made available by the advent of the 3rd generation synchrotron sources, are discussed in the

Light Dawns on Dark Gamma-ray Bursts

Science.gov (United States)

2010-12-01

journal Astronomy & Astrophysics on 16 December 2010 The team is composed of: J. Greiner (Max-Planck-Institut für extraterrestrische Physik [MPE], Germany), T. Krühler (MPE, Universe Cluster, Technische Universität München), S. Klose (Thüringer Landessternwarte, Germany), P. Afonso (MPE), C. Clemens (MPE), R. Filgas (MPE), D.H. Hartmann (Clemson University, USA), A. Küpcü Yoldaş¸ (University of Cambridge, UK), M. Nardini (MPE), F. Olivares E. (MPE), A. Rau (MPE), A. Rossi (Thüringer Landessternwarte, Germany), P. Schady (MPE), and A. Updike (Clemson University, USA) ESO, the European Southern Observatory, is the foremost intergovernmental astronomy organisation in Europe and the world's most productive astronomical observatory. It is supported by 14 countries: Austria, Belgium, the Czech Republic, Denmark, France, Finland, Germany, Italy, the Netherlands, Portugal, Spain, Sweden, Switzerland and the United Kingdom. ESO carries out an ambitious programme focused on the design, construction and operation of powerful ground-based observing facilities enabling astronomers to make important scientific discoveries. ESO also plays a leading role in promoting and organising cooperation in astronomical research. ESO operates three unique world-class observing sites in Chile: La Silla, Paranal and Chajnantor. At Paranal, ESO operates the Very Large Telescope, the world's most advanced visible-light astronomical observatory and VISTA, the world's largest survey telescope. ESO is the European partner of a revolutionary astronomical telescope ALMA, the largest astronomical project in existence. ESO is currently planning a 42-metre European Extremely Large optical/near-infrared Telescope, the E-ELT, which will become "the world's biggest eye on the sky".

Observing a Burst with Sunglasses

Science.gov (United States)

2003-11-01

factor by which the lines in the spectrum of an object are shifted towards longer wavelengths. Since the redshift of a cosmological object increases with distance, the observed redshift of a remote galaxy also provides an estimate of its distance. [2]: Members of the team include Jochen Greiner, Arne Rau (Max-Planck-Institut für extraterrestrische Physik, Germany), Sylvio Klose, Bringfried Stecklum (Thüringer Landessternwarte Tautenburg, Germany), Klaus Reinsch (Universitätssternwarte Göttingen, Germany), Hans Martin Schmid (Institut für Astronomie Zürich, Switzerland ), Re'em Sari (California Institute of Technology, USA), Dieter H. Hartmann (Clemson University, USA), Chryssa Kouveliotou (NSSTC, Huntsville, Alabama, USA), Eliana Palazzi (Istituto di Astrofisica Spaziale e Fisica Cosmica, Bologna, Italy), Christian Straubmeier (Physikalisches Institut Köln, Germany), Sergej Zharikov, Gaghik Tovmassian (Instituto de Astronomia Ensenada, Mexico), Otto Bärnbantner, Christop Ries (Wendelstein-Observatorium München, Germany), Emmanuel Jehin, Andreas Kaufer (European Southern Observatory, Chile), Arne Henden (USNO Flagstaff, USA), Anlaug A. Kaas (NOT, La Palma, Spain), Tommy Grav (University of Oslo, N), Jens Hjorth, Holger Pedersen (Astronomical Observatory Copenhagen, Denmark), Ralph A.M.J. Wijers (Astronomical Institute Anton Pannekoek, Amsterdam, The Netherlands), Hye-Sook Park (Lawrence Livermore Nat. Laboratory, USA), Grant Williams (MMT Observatory, Tucson, USA), Olaf Reimer (Theoretische Weltraum- und Astrophysik Universität Bochum, Germany) [3]: When electrons - which are electrically charged - move through a magnetic field, they spiral around an axis defined by the local magnetic field. Electrons of high energy spiral very rapidly, at speeds near the speed of light. Under such conditions, the electrons emit highly polarised electromagnetic radiation. The intensity of this radiation is related to the strength of the magnetic field and the number and energy

L’actuació discursiva d’un mestre novell en una classe de llengua catalana: gestió de l’aula i construcció del coneixement

Directory of Open Access Journals (Sweden)

Mariona Casas i Deseures

2009-11-01

Full Text Available Aquest article presenta un estudi de cas que analitza la interacció a l’aula en l’ensenyament-aprenentatge de llengua catalana a quart de primària. Concretament, l’anàlisi se centra en l'actuació discursiva oral d’un mestre novell des del punt de vista de les estratègies que utilitza per gestionar l'aula i per construir coneixement. A partir de l'instrument d'anàlisi de Castellà et al. 2007, que classifica les estratègies discursives de relació social a l’aula i les estratègies discursives de construcció de coneixement, la recerca es pregunta si l’ensenyant es comporta –durant la sessió enregistrada– com a docent efectiu des del punt de vista discursiu i quines implicacions didàctiques té la seva actuació discursiva. Els resultats demostren que el mestre usa més estratègies de gestió de l’aula que de construcció del coneixement i que el coneixement que construeix és escàs, superficial i repetitiu. Justament, les conclusions intenten respondre fins a quin punt la interacció construeix coneixement i com és el coneixement que es construeix. Partint de la base que la interacció és un mitjà per construir coneixement i no una finalitat per se, el predomini de les estratègies de gestió de l’aula al llarg de la sessió demostra que el mestre usa essencialment la interacció per anar teixint el coneixement, és a dir, que la seva habilitat en la gestió de l’aula facilita l’ensenyament-aprenentatge de coneixements nous. Amb tot, el coneixement que es construeix es caracteritza per la introducció de pocs continguts, per l’absència de reflexió metalingüística i per l’escassa presència de discurs explicatiu. L’article conclou que l’ensenyant es comporta com un mestre novell estratègic, en el sentit que la destresa gestionant l’aula atenua la seva inexpertesa construint coneixement. L’interès d’aquesta recerca rau en l’aportació d’unes reflexions sobre l’actuació discursiva d�

Editorial: Partizipationschancen im Kulturraum Internet nutzen und gestalten: Das Beispiel Web 2.0

Directory of Open Access Journals (Sweden)

Kerstin Mayrberger

2011-10-01

die Beurteilung von entsprechenden Angeboten aus Nutzersicht thematisiert. Auf dieser Grundlage werden Empfehlungen für die Gestaltung von Internetangeboten der politischen Bildung in Zeiten von Web 2.0 gegeben. Kerstin Mayrberger setzt sich in ihrem Beitrag «Partizipatives Lernen mit dem Social Web in formalen Bildungskontexten gestalten – Zum Widerspruch einer verordneten Partizipation» aus konzeptioneller Sicht mit den Potenzialen und Grenzen des Social Web für ein partizipatives Lernen auseinander. Ausgehend von den Annahmen, dass mit dem Einsatz von Social Software in formalen Bildungskontexten wie Schule und Hochschule ein tatsächliches partizipatives Lernen systembedingt nur begrenzt realisierbar ist und dass es daher in formalen Bildungskontexten immer nur eine «verordnete Partizipation» geben kann, nimmt der Beitrag eine Systematisierung von Begriffen vor und stellt ein Stufenmodell partizipativen Lernens im formalen Bildungskontext vor, das aus mediendidaktischer Sicht bei der Gestaltung von Lernumgebungen einen differenzierten Umgang mit den Grenzen und Möglichkeiten von Social Software beim Lehren und Lernen erlaubt. Petra Grell und Franco Rau diskutieren in ihrem Beitrag «Partizipationslücken: Social Software in der Hochschullehre» verschiedene Probleme, die mit der Umsetzung von Social Software im Bereich der Hochschule einhergehen. Die Basis dafür stellt sowohl die aktuelle Diskussion um die Potenziale zur Einbindung von Angeboten des Web 2.0 in der Hochschullehre dar als auch eine Analyse von 16 publizierten Fallstudien zum Einsatz von Social Software in der Hochschullehre. Der Beitrag benennt abschliessend grundsätzliche Herausforderungen und Spannungsfelder partizipativer Ansätze mit digitalen Medien im Bildungsraum Hochschule. Birgit Gaiser und Stefanie Panke nehmen in ihrem Beitrag «Wenn Edusphäre und Blogosphäre sich treffen: Weblogs an Hochschulen zwischen Zitationskartell und Diskursrevolte» eine Bestandsaufnahme der Nutzung

2002年召开的部分国际地学会议

Institute of Scientific and Technical Information of China (English)

黎明

2002-01-01

/qra.org.uk 5月15～17日 第4届流体力学研究进展国际会议 Ghent (比利时) www.wessex.ac.uk/conferences 2002/afm02/ 5月16日～17日 危险快速坡降运动预报与防治国际会议 索伦托 （意大利） www.unina2.it/fsm 2002 5月20～23日 不稳定性国际会议 文特诺 （英国） confernce@iwight.gov.uk 5月20～24日 第6届地球表面的地球化学国际研讨会 夏威夷 (美国) 　 5月26～31日 第12届水土保持国际会议 北京 www.geotechnique.org 5月27～28日 多瑙河--欧洲国际会议 帕绍 （德国） www.geotechnique.org 5月27～30日 第63届欧洲地球科学家和工程师协会与技术展览会 佛罗伦萨 (意大利) www.eage.nl/ 5月28～6月1日 AGU春季会议 华盛顿 (美国) www.agu.org/ 5月29～31日 第9届水信息管理会议 蒙特利尔 (加拿大) www.wessex.ac.uk/conferences/2002/hy02/ 5月29～31日 矿物的持续过程国际会议 凯恩斯 (澳大利亚) www.ausimm.com 6月2～5日 第43届测井国际会议 Oiso (日本) kobayssi@fuchinobe.skk.s1b.com 6月3～7日 2002年沸石国际研讨会 塞萨洛尼基 (希腊) www.chem.auth.gr/activities/zeo2002/ 6月4～7日 IAH欧洲会议：欧洲地下水中的硝酸盐 塞萨洛尼基 （希腊） iraz@pigog.com.pl 6月17～20日 地下水模拟的校准与确定国际会议 布拉格 （捷克） www.guarant.cz/modelcare 2002 6月18～20日 矿物与金属加工中的循环与废料处理国际会议 吕勒奥 （瑞典） caisa.samuelsson@km.luth.se 6月19～21日 第3届危险分析与减灾的计算模拟国际会议 辛特拉 (葡萄牙) www.wessex.ac.uk/confenrences/ 2002/risk02/ 6月30～7月5日 第16届澳大利亚地质会议：2002年地球科学会议 阿德莱德 (澳大利亚) www.16thagc.gsa.arg.au 7月6～10日 第1届古生物学国际会议 悉尼 （澳大利亚） www.es.mq.edu.au/mucep 7月7日～12日 第16届国际沉积学会议 Gauteng (南非) general.rau.ac.za/geology/annoucement.htm 7月21～25日 第7�