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Sample records for duo kolis ka

  1. Felix Vodička: Úkoly literární historie a jejich zdroj

    Czech Academy of Sciences Publication Activity Database

    Kubíček, Tomáš

    2010-01-01

    Roč. 92, 1/2 (2010), s. 85-94 ISSN 0862-8459. [100 let generace prvních žáků PLK. Praha, 09.02.2009-09.02.2009] R&D Projects: GA ČR GA405/07/0077 Institutional research plan: CEZ:AV0Z90560517 Keywords : history of literature * Vodička, Felix * structuralism Subject RIV: AJ - Letters, Mass-media, Audiovision

  2. Kuulus dress ka Evelinile!

    Index Scriptorium Estoniae

    2009-01-01

    Proua Evelin Ilves kinkis Eestis esinenud popstaar Madonnale eesti rahvusmotiividega dressid. Sarnased spordirõivad tulevad müügile ka Tallinnas Viru keskuses Bastioni esinduskaupluses. Proua Evelin Ilvesele valmistatakse ainulaadsed valgest kangast dressid

  3. A Disturbed Galactic Duo

    Science.gov (United States)

    2011-04-01

    The galaxies in this cosmic pairing, captured by the Wide Field Imager on the MPG/ESO 2.2-metre telescope at the La Silla Observatory in Chile, display some curious features, demonstrating that each member of the duo is close enough to feel the distorting gravitational influence of the other. The gravitational tug of war has warped the spiral shape of one galaxy, NGC 3169, and fragmented the dust lanes in its companion NGC 3166. Meanwhile, a third, smaller galaxy to the lower right, NGC 3165, has a front-row seat to the gravitational twisting and pulling of its bigger neighbours. This galactic grouping, found about 70 million light-years away in the constellation Sextans (The Sextant), was discovered by the English astronomer William Herschel in 1783. Modern astronomers have gauged the distance between NGC 3169 (left) and NGC 3166 (right) as a mere 50 000 light-years, a separation that is only about half the diameter of the Milky Way galaxy. In such tight quarters, gravity can start to play havoc with galactic structure. Spiral galaxies like NGC 3169 and NGC 3166 tend to have orderly swirls of stars and dust pinwheeling about their glowing centres. Close encounters with other massive objects can jumble this classic configuration, often serving as a disfiguring prelude to the merging of galaxies into one larger galaxy. So far, the interactions of NGC 3169 and NGC 3166 have just lent a bit of character. NGC 3169's arms, shining bright with big, young, blue stars, have been teased apart, and lots of luminous gas has been drawn out from its disc. In NGC 3166's case, the dust lanes that also usually outline spiral arms are in disarray. Unlike its bluer counterpart, NGC 3166 is not forming many new stars. NGC 3169 has another distinction: the faint yellow dot beaming through a veil of dark dust just to the left of and close to the galaxy's centre [1]. This flash is the leftover of a supernova detected in 2003 and known accordingly as SN 2003cg. A supernova of this

  4. Trening za razvijanje občutka za števila in količine pri predšolskih otrocih s posebnimi potrebami

    OpenAIRE

    Kuplenk, Petra

    2017-01-01

    Tako otroci kot tudi odrasli se z matematiko srečujemo na vsakem koraku, pa naj bo to na poti v vrtec, službo ali pa pri delu doma. Matematika vsakodnevno vpliva na naše življenje in delo. Na delovnem mestu, v vrtcu, opažam vse večje težave otrok s posebnimi potrebami na področju razvoja občutka za števila in količine. V predšolskem obdobju je namreč nujno, da otroci razvijejo občutek za števila in količine, saj vsa nadaljnja matematična znanja temeljijo na usvojenih spretnostih. V empirič...

  5. Fade Mitigation Techniques at Ka-Band

    Science.gov (United States)

    Dissanayake, Asoka (Editor)

    1996-01-01

    Rain fading is the dominant propagation impairment affecting Ka-band satellite links and rain fade mitigation is a key element in the design of Ka-band satellite networks. Some of the common fade mitigation techniques include: power control, diversity, adaptive coding, and resource sharing. The Advanced Communications Technology Satellite (ACTS) provides an excellent opportunity to develop and test Ka-band rain impairment amelioration techniques. Up-link power control and diversity are discussed in this paper.

  6. Swirling flow and its influence on dc arcs in a duo-flow hybrid circuit breaker

    International Nuclear Information System (INIS)

    Kweon, K Y; Lee, H S; Yan, J D; Fang, M T C; Park, K Y

    2009-01-01

    The effects of swirling flow on the behaviour of dc SF 6 arcs in a duo-flow nozzle are computationally investigated in the electric current range 3-7 kA. A swirling flow is produced by the interaction of the magnetic field of a current-carrying coil and the plasma. Results show that a strong swirling flow is generated in regions where a large radial current density exists as a result of the conducting arc column rapidly changing its radial dimension. The presence of the swirling flow reduces the axis pressure, modifies the arc shape and slightly lowers the arc voltage (2-5%) in comparison with the case without considering the swirling flow. The different natures of swirling flows in a plasma jet/arc heater and in a hybrid circuit breaker are also discussed.

  7. Ka-Band MMIC Subarray Technology Program (Ka-Mist)

    Science.gov (United States)

    Pottinger, W.

    1995-01-01

    Ka-band monolithic microwave integrated circuit (MMIC) arrays have been considered as having high potential for increasing the capability of space, aircraft, and land mobile communication systems in terms of scan performance, data rate, link margin, and flexibility while offering a significant reduction in size, weight, and power consumption. Insertion of MMIC technology into antenna systems, particularly at millimeter wave frequencies using low power and low noise amplifiers in closed proximity to the radiating elements, offers a significant improvement in the array transmit efficiency, receive system noise figure, and overall array reliability. Application of active array technology also leads to the use of advanced beamforming techniques that can improve beam agility, diversity, and adaptivity to complex signal environments. The objective of this program was to demonstrate the technical feasibility of the 'tile' array packaging architecture at EHF via the insertion of 1990 MMIC technology into a functional tile array or subarray module. The means test of this objective was to demonstrate and deliver to NASA a minimum of two 4 x 4 (16 radiating element) subarray modules operating in a transmit mode at 29.6 GHz. Available (1990) MMIC technology was chosen to focus the program effort on the novel interconnect schemes and packaging requirements rather than focusing on MMIC development. Major technical achievements of this program include the successful integration of two 4 x 4 subarray modules into a single antenna array. This 32 element array demonstrates a transmit EIRP of over 300 watts yielding an effective directive power gain in excess of 55 dB at 29.63 GHz. The array has been actively used as the transmit link in airborne/terrestrial mobile communication experiments accomplished via the ACTS satellite launched in August 1993.

  8. Doing Duo – a Case Study of Entrainment in William Forsythe’s Choreography Duo

    Directory of Open Access Journals (Sweden)

    Elizabeth eWaterhouse

    2014-10-01

    Full Text Available Entrainment theory focuses on processes in which interacting (i.e. coupled rhythmic systems stabilize, producing synchronization in the ideal sense, and forms of phase related rhythmic coordination in complex cases. In human action, entrainment involves spatiotemporal and social aspects, characterizing the meaningful activities of music, dance, and communication. How can the phenomenon of human entrainment be meaningfully studied in complex situations such as dance? We present an in-progress case study of entrainment in William Forsythe's choreography Duo, a duet in which coordinated rhythmic activity is achieved without an external musical beat and without touch-based interaction. Using concepts of entrainment from different disciplines as well as insight from Duo performer Riley Watts, we question definitions of entrainment in the context of dance. The functions of chorusing, turn-taking, complementary action, cues and alignments are discussed and linked to supporting annotated video material. While Duo challenges the definition of entrainment in dance as coordinated response to an external musical or rhythmic signal, it supports the definition of entrainment as coordinated interplay of motion and sound production by active agents (i.e., dancers in the field. Agreeing that human entrainment should be studied on multiple levels, we suggest that entrainment between the dancers in Duo is elastic in time and a propose how to test this hypothesis empirically. We do not claim that our proposed model of elasticity is applicable to all forms of human entrainment nor to all to examples of entrainment in dance. Rather, we suggest studying higher order phase correction (the stabilizing tendency of entrainment as a potential aspect to be incorporated into other models.

  9. Ionization Constants pKa of Cardiolipin

    OpenAIRE

    Olofsson, Gerd; Sparr, Emma

    2013-01-01

    Cardiolipin is a phospholipid found in the inner mitochondrial membrane and in bacteria, and it is associated with many physiological functions. Cardiolipin has a dimeric structure consisting of two phosphatidyl residues connected by a glycerol bridge and four acyl chains, and therefore it can carry two negative charges. The pKa values of the phosphate groups have previously been reported to differ widely with pKa1 = 2.8 and pKa2 = 7.5-9.5. Still, there are several examples of experimental ob...

  10. Deployable Ka-Band Reflectarray, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — Tyvak, in collaboration with UCLA, proposes a novel approach to the challenge of creating a large reflector for Ka-band high data rate links. We propose to attach...

  11. Ionization constants pKa of cardiolipin.

    Directory of Open Access Journals (Sweden)

    Gerd Olofsson

    Full Text Available Cardiolipin is a phospholipid found in the inner mitochondrial membrane and in bacteria, and it is associated with many physiological functions. Cardiolipin has a dimeric structure consisting of two phosphatidyl residues connected by a glycerol bridge and four acyl chains, and therefore it can carry two negative charges. The pKa values of the phosphate groups have previously been reported to differ widely with pKa1 = 2.8 and pKa2 = 7.5-9.5. Still, there are several examples of experimental observations from cardiolipin-containing systems that do not fit with this dissociation behavior. Therefore, we have carried out pH-titration and titration calorimetric experiments on two synthetic cardiolipins, 1,1',2,2'-tetradecanoyl cardiolipin, CL (C14:0, and 1,1',2,2'-tetraoctadecenoyl cardiolipin, CL (C18:1. Our results show that both behave as strong dibasic acids with pKa1 about the same as the first pKa of phosphoric acid, 2.15, and pKa2 about one unit larger. The characterization of the acidic properties of cardiolipin is crucial for the understanding of the molecular organization in self-assembled systems that contain cardiolipin, and for their biological function.

  12. Ionization constants pKa of cardiolipin.

    Science.gov (United States)

    Olofsson, Gerd; Sparr, Emma

    2013-01-01

    Cardiolipin is a phospholipid found in the inner mitochondrial membrane and in bacteria, and it is associated with many physiological functions. Cardiolipin has a dimeric structure consisting of two phosphatidyl residues connected by a glycerol bridge and four acyl chains, and therefore it can carry two negative charges. The pKa values of the phosphate groups have previously been reported to differ widely with pKa1 = 2.8 and pKa2 = 7.5-9.5. Still, there are several examples of experimental observations from cardiolipin-containing systems that do not fit with this dissociation behavior. Therefore, we have carried out pH-titration and titration calorimetric experiments on two synthetic cardiolipins, 1,1',2,2'-tetradecanoyl cardiolipin, CL (C14:0), and 1,1',2,2'-tetraoctadecenoyl cardiolipin, CL (C18:1). Our results show that both behave as strong dibasic acids with pKa1 about the same as the first pKa of phosphoric acid, 2.15, and pKa2 about one unit larger. The characterization of the acidic properties of cardiolipin is crucial for the understanding of the molecular organization in self-assembled systems that contain cardiolipin, and for their biological function.

  13. COMPOSTAGEM DE RESÍDUOS SÓLIDOS

    Directory of Open Access Journals (Sweden)

    Francisco Ariclenes Olinto

    2013-03-01

    Full Text Available Resíduos são os resultados de processos de diversas atividades da comunidade, sendo de origem industrial, doméstica, hospitalar, comercial, agrícola, de serviços e ainda da varrição pública. Os resíduos apresentam-se nos estados sólido, gasoso e líquido. Produzidos em todos os estágios das atividades humanas, os resíduos, em termos tanto de composição como de volume, variam em função das práticas de consumo e dos métodos de produção. Para solucionar a problemática que envolve os resíduos sólidos, como deposição inadequada em lixões que contaminam o solo e os recursos hídricos e saturação de aterros sanitários, é necessário adotar o gerenciamento integrado de resíduos sólidos que compreendem a redução da geração destes, a reutilização, a reciclagem de materiais que podem servir de matéria prima e a compostagem que trata o resíduo orgânico, dando a este uma nova utilidade. Tendo em vista a problemática da disposição de resíduos sólidos nos mais diversos procedimentos industrias, agroindustrias e domésticos, da sua deposição no ambiente sem tratamento prévio poluindo solos e mananciais hídricos, da possível transmissão de doenças e da busca de alternativas de tratamento desses resíduos, objetiva-se com esse trabalho além da preservação ambiental, a avaliação e estudo do processo de compostagem como método de tratamento de resíduos sólidos.

  14. Muukeelne elanikkond vajab ka ETVd / Ela Tomson

    Index Scriptorium Estoniae

    Tomson, Ela, 1945-

    2006-01-01

    Ilmunud ka: Postimees : na russkom jazõke 4. juuli lk. 7, Pjarnuskii Ekspress 7. juuli lk. 7. Autori arvates on riik jätnud Eestis elava muukeelse elanikkonna Venemaa telekanalite mõju alla. Ometi poleks see, kui varustada ETV tähtsamad saated venekeelsete subtiitritega, midagi rahamahukat ja kaelamurdvat

  15. Jaapani edumetoodika ka Eestis / Merike Lees

    Index Scriptorium Estoniae

    Lees, Merike, 1976-

    2004-01-01

    Ilmunud ka: Delovõje Vedomosti 17. nov. lk. 28. Tootmissfääris kasutatavast Jaapani 20 võtme metoodikast loodab ettevõttele kasu saada lehtmetalli töötleva AS-i Favor Metaform nõukogu esimees Almar Proosi. Lisa: Mis on 20 võtit?

  16. Ka-band waveguide rotary joint

    KAUST Repository

    Yevdokymov, Anatoliy; Sirenko, Kostyantyn; Kryzhanovskiy, Volodymyr; Pazynin, Vadim

    2013-01-01

    The authors present a design of a waveguide rotary joint operating in Ka-band with central frequency of 33 GHz, which also acts as an antenna mount. The main unit consists of two flanges with a clearance between them; one of the flanges has three

  17. Duo: Software Defined Intrusion Tolerant System Using Dual Cluster

    Directory of Open Access Journals (Sweden)

    Yongjae Lee

    2018-01-01

    Full Text Available An intrusion tolerant system (ITS is a network security system that is composed of redundant virtual servers that are online only in a short time window, called exposure time. The servers are periodically recovered to their clean state, and any infected servers are refreshed again, so attackers have insufficient time to succeed in breaking into the servers. However, there is a conflicting interest in determining exposure time, short for security and long for performance. In other words, the short exposure time can increase security but requires more servers to run in order to process requests in a timely manner. In this paper, we propose Duo, an ITS incorporated in SDN, which can reduce exposure time without consuming computing resources. In Duo, there are two types of servers: some servers with long exposure time (White server and others with short exposure time (Gray server. Then, Duo classifies traffic into benign and suspicious with the help of SDN/NFV technology that also allows dynamically forwarding the classified traffic to White and Gray servers, respectively, based on the classification result. By reducing exposure time of a set of servers, Duo can decrease exposure time on average. We have implemented the prototype of Duo and evaluated its performance in a realistic environment.

  18. Development of DUO-THERM Ver 1.0

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Yong Sik; Chun, Tae Hyun; Shin, Chang Hwan; Song, Kun Woo

    2008-10-15

    DUO{sub T}HERM ver 1.0 program was developed which can evaluate a double cooled annular fuel thermal behavior. This program can analyze a fuel thermal performance such as a fuel temperature and thermal expansion based upon the evaluated results of flow and heat split which are special features of double cooled annular pellet. By using the sample input data, a preliminary calculation was performed and showed that DUO-THERM ver 1.0 can be applicable for prediction of the fuel temperature, heat and flow split and thermal deformation. For the verification of DUO program, the flow split, heat split, maximum fuel temperature, maximum temperature location and fuel thermal conductivity were compared with MATRA-AF results which was calculated under same input variables and showed good agreement with each other.

  19. Precision Deployable Mast for the SWOT KaRIn Instrument

    Data.gov (United States)

    National Aeronautics and Space Administration — Design and prototype a lightweight, precision-deployable mast for the Ka-band Radar Interferometer (KaRIn) antennas in the Surface Water and Ocean Topography (SWOT)...

  20. Sample Scripts for Illumina 1M-Duo [

    Lifescience Database Archive (English)

    Full Text Available load_data.txt 4. Importing the result of typing data of the illumina 1M-Duo This script helps you to create ...the result table of all typing data. Example of script: create_table_tbl_fr_recluster.sql CREATE TABLE `tbl_

  1. Performance of Artificial Intelligence Workloads on the Intel Core 2 Duo Series Desktop Processors

    OpenAIRE

    Abdul Kareem PARCHUR; Kuppangari Krishna RAO; Fazal NOORBASHA; Ram Asaray SINGH

    2010-01-01

    As the processor architecture becomes more advanced, Intel introduced its Intel Core 2 Duo series processors. Performance impact on Intel Core 2 Duo processors are analyzed using SPEC CPU INT 2006 performance numbers. This paper studied the behavior of Artificial Intelligence (AI) benchmarks on Intel Core 2 Duo series processors. Moreover, we estimated the task completion time (TCT) @1 GHz, @2 GHz and @3 GHz Intel Core 2 Duo series processors frequency. Our results show the performance scalab...

  2. MoDUO1, a Duo1-like gene, is required for full virulence of the rice blast fungus Magnaporthe oryzae.

    Science.gov (United States)

    Peng, Haowen; Feng, Youjun; Zhu, Xiaohui; Lan, Xiuwan; Tang, Mei; Wang, Jinzi; Dong, Haitao; Chen, Baoshan

    2011-12-01

    Duo1, a major component of the Dam1 complex which has been found in two species of yeast (the budding yeast Saccharomyces cerevisae and the fission yeast Schizosaccharomyces pombe), is involved in mitosis-related chromosome segregation, while its relevance to pathogenicity in filamentous fungi remains unclear. This report elucidated this very fact in the case of the rice blast fungus Magnaporthe oryzae. A gene designated MoDUO1 that encodes a Duo1-like homolog (MoDuo1) was discovered in the M. oryzae genome. Two types of MoDUO1 mutants were obtained using genetic approaches of Agrobacterium-mediated gene disruption and homologous recombination. Both disruption and deletion of MoDUO1 can exert profound effects on the formation pattern of conidiophores and conidial morphology, such as abnormal nucleic numbers in conidia and delayed extension of infectious hyphae. Intriguingly, plant infection assays demonstrated that inactivation of MoDUO1 significantly attenuates the virulence in its natural host rice leaves, and functional complementation can restore it. Subcellular localization assays showed that MoDuo1 is mainly distributed in the cytosol of fungal cells. Proteomics-based investigation revealed that the expression of four mitosis-related proteins is shut down in the MoDUO1 mutant, suggesting that MoDuo1 may have a function in mitosis. In light of the fact that Duo1 orthologs are widespread in plant and human fungal pathogens, our finding may represent a common mechanism underlying fungal virulence. To the best of our knowledge, this is the first example of linking a Duo1-like homolog to the pathogenesis of a pathogenic fungus, which might provide clues to additional studies on the role of Dam1 complex in M. oryzae and its interaction with rice.

  3. Ka-band waveguide rotary joint

    KAUST Repository

    Yevdokymov, Anatoliy

    2013-04-11

    The authors present a design of a waveguide rotary joint operating in Ka-band with central frequency of 33 GHz, which also acts as an antenna mount. The main unit consists of two flanges with a clearance between them; one of the flanges has three circular choke grooves. Utilisation of three choke grooves allows larger operating clearance. Two prototypes of the rotary joint have been manufactured and experimentally studied. The observed loss is from 0.4 to 0.8 dB in 1.5 GHz band.

  4. Bohorodyts'ka and Starosamars'ka hundred (sotnya: administrative system and officer (starshyna corps

    Directory of Open Access Journals (Sweden)

    Repan, O. A.

    2017-12-01

    Full Text Available Bohorodyts'ka and Starosamars'ka hundred (sotnyais an unique Cossack formations. They existed in a territorial isolation from the Hetmanate and Slobozhanshchyna, on the lands of the Zaporozhian Sich. The study of these formations will better understand the policy of the Russian government in relation to the Sich, to find out the methods by which the state authorities planned to put Zaporizhzhya Cossacks under their control. We do not know when the Bohorodyts'ka hundred (sotnya arose. Now the first mention in the documents dates back to 1700. The Russian government planned to create a Cossack regiment (polk here, but in reality was founded a Cossack hundred (sotnya. Ivan Mazepa, as an autonomous ruler, wanted to include this formation in the structure of Hetmanate, but a hundred (sotnya was subject to the authority of a representative of the Russian administration – the Kiev governor. The hundreds (sotnya were liquidated as a result of Russia's defeat in the war with Turkey and the signing of the Prut peace in 1711. We do not know when the Cossack hundred (sotnya was restored under the name Starosamars'ka. This happened in the late 1730s – early 1740s. In 1744, the Starosamarsʼka hundreds became part of the Poltava regiment (polk of the Hetmanate. The administrative apparatus of the hundreds was predominantly similar to other hundreds of Hetmanates, but the real power of the Cossack officers was a bit lower here. During the existence of the Starosamars'ka hundreds, such a body of self-government was preserved as a council (rada that was not typical for the Hetmanate in this period. This was due to the fact that the peoples could easily escape from their power and move to neighboring settlements and recognize the jurisdiction of the Zaporozhska Sich. The population of hundreds and officers consisted mainly of immigrants from the left bank of the Dnieper, to a lesser extent – from immigrants from the right bank. Summing up, I note that the

  5. Shared periodic performer movements coordinate interactions in duo improvisations

    Science.gov (United States)

    Jakubowski, Kelly; Moran, Nikki; Keller, Peter E.

    2018-01-01

    Human interaction involves the exchange of temporally coordinated, multimodal cues. Our work focused on interaction in the visual domain, using music performance as a case for analysis due to its temporally diverse and hierarchical structures. We made use of two improvising duo datasets—(i) performances of a jazz standard with a regular pulse and (ii) non-pulsed, free improvizations—to investigate whether human judgements of moments of interaction between co-performers are influenced by body movement coordination at multiple timescales. Bouts of interaction in the performances were manually annotated by experts and the performers’ movements were quantified using computer vision techniques. The annotated interaction bouts were then predicted using several quantitative movement and audio features. Over 80% of the interaction bouts were successfully predicted by a broadband measure of the energy of the cross-wavelet transform of the co-performers’ movements in non-pulsed duos. A more complex model, with multiple predictors that captured more specific, interacting features of the movements, was needed to explain a significant amount of variance in the pulsed duos. The methods developed here have key implications for future work on measuring visual coordination in musical ensemble performances, and can be easily adapted to other musical contexts, ensemble types and traditions. PMID:29515867

  6. High Efficiency Ka-Band Spatial Combiner

    Directory of Open Access Journals (Sweden)

    D. Passi

    2014-12-01

    Full Text Available A Ka-Band, High Efficiency, Small Size Spatial Combiner (SPC is proposed in this paper, which uses an innovatively matched quadruple Fin Lines to microstrip (FLuS transitions. At the date of this paper and at the Author's best knowledge no such FLuS innovative transitions have been reported in literature before. These transitions are inserted into a WR28 waveguide T-junction, in order to allow the integration of 16 Monolithic Microwave Integrated Circuit (MMIC Solid State Power Amplifiers (SSPA's. A computational electromagnetic model using the finite elements method has been implemented. A mean insertion loss of 2 dB is achieved with a return loss better the 10 dB in the 31-37 GHz bandwidth.

  7. DARHT 2 kA Cathode Development

    Energy Technology Data Exchange (ETDEWEB)

    Henestroza, E.; Houck, T.; Kwan, J.W.; Leitner, M.; Miram, G.; Prichard, B.; Roy, P.K.; Waldron, W.; Westenskow, G.; Yu, S.; Bieniosek, F.M.

    2009-03-09

    In the campaign to achieve 2 kA of electron beam current, we have made several changes to the DARHT-II injector during 2006-2007. These changes resulted in a significant increase in the beam current, achieving the 2 kA milestone. Until recently (before 2007), the maximum beam current that was produced from the 6.5-inch diameter (612M) cathode was about 1300 A when the cathode was operating at a maximum temperature of 1140 C. At this temperature level, the heat loss was dominated by radiation which is proportional to temperature to the fourth power. The maximum operating temperature was limited by the damage threshold of the potted filament and the capacity of the filament heater power supply, as well as the shortening of the cathode life time. There were also signs of overheating at other components in the cathode assembly. Thus it was clear that our approach to increase beam current could not be simply trying to run at a higher temperature and the preferred way was to operate with a cathode that has a lower work function. The dispenser cathode initially used was the type 612M made by SpectraMat. According to the manufacturer's bulletin, this cathode should be able to produce more than 10 A/cm{sup 2} of current density (corresponding to 2 kA of total beam current) at our operating conditions. Instead the measured emission (space charge limited) was 6 A/cm{sup 2}. The result was similar even after we had revised the activation and handling procedures to adhere more closely to the recommend steps (taking longer time and nonstop to do the out-gassing). Vacuum was a major concern in considering the cathode's performance. Although the vacuum gauges at the injector vessel indicated 10{sup -8} Torr, the actual vacuum condition near the cathode in the central region of the vessel, where there might be significant out-gassing from the heater region, was never determined. Poor vacuum at the surface of the cathode degraded the emission (by raising the work function

  8. DARHT 2 kA Cathode Development

    International Nuclear Information System (INIS)

    Henestroza, E.; Houck, T.; Kwan, J.W.; Leitner, M.; Miram, G.; Prichard, B.; Roy, P.K.; Waldron, W.; Westenskow, G.; Yu, S.; Bieniosek, F.M.

    2009-01-01

    In the campaign to achieve 2 kA of electron beam current, we have made several changes to the DARHT-II injector during 2006-2007. These changes resulted in a significant increase in the beam current, achieving the 2 kA milestone. Until recently (before 2007), the maximum beam current that was produced from the 6.5-inch diameter (612M) cathode was about 1300 A when the cathode was operating at a maximum temperature of 1140 C. At this temperature level, the heat loss was dominated by radiation which is proportional to temperature to the fourth power. The maximum operating temperature was limited by the damage threshold of the potted filament and the capacity of the filament heater power supply, as well as the shortening of the cathode life time. There were also signs of overheating at other components in the cathode assembly. Thus it was clear that our approach to increase beam current could not be simply trying to run at a higher temperature and the preferred way was to operate with a cathode that has a lower work function. The dispenser cathode initially used was the type 612M made by SpectraMat. According to the manufacturer's bulletin, this cathode should be able to produce more than 10 A/cm 2 of current density (corresponding to 2 kA of total beam current) at our operating conditions. Instead the measured emission (space charge limited) was 6 A/cm 2 . The result was similar even after we had revised the activation and handling procedures to adhere more closely to the recommend steps (taking longer time and nonstop to do the out-gassing). Vacuum was a major concern in considering the cathode's performance. Although the vacuum gauges at the injector vessel indicated 10 -8 Torr, the actual vacuum condition near the cathode in the central region of the vessel, where there might be significant out-gassing from the heater region, was never determined. Poor vacuum at the surface of the cathode degraded the emission (by raising the work function value). We reexamined

  9. Hobune kolis Veneetsiasse / Tõnu Kaalep

    Index Scriptorium Estoniae

    Kaalep, Tõnu, 1966-2018

    2004-01-01

    Muljeid Veneetsia 9 rahvusvaheliselt arhitektuuribiennaalilt Arsenale hallides. Eestit esindavad sisearhitekt Kristajan Holm, arhitekt Agu Külm ja soome skulptor Jukka-Pekka Jalovaara näituseprojektiga, mis tugineb Madis Jürgeni raamatule "Hää koht" kuivkäimlatest. 7 ill

  10. Varianty klimatu školy

    OpenAIRE

    Andrová, Irena

    2014-01-01

    This thesis deals with variants of a school climate. The theoretical part consists of two sections. The first section explains basic terms which are connected with the school climate. The second section explains the factors influencing the school climate. The practical part is concentrated on a quantitative research of variants of a school climate in the form of a questionnaire. The questionnaire finds out a climate in Secondary technical school in Čáslav and in Secondary agricultural school ...

  11. Assigning the pKa's of Polyprotic Acids.

    Science.gov (United States)

    Bodner, George M.

    1986-01-01

    Discusses (1) polyproptic acids for which the difference between K-a's is large; (2) the Henderson-Hasselbach equation; (3) polyprotic acids for which the difference between K-a's is small; (4) analysis of microscopic dissociation constants for cysteine; and (5) analysis of pK-a data. (JN)

  12. Briti korruptsioonivastane seadus kehtib ka Eestis / Tõnis Tamme

    Index Scriptorium Estoniae

    Tamme, Tõnis, 1972-

    2011-01-01

    Suurbritannias jõustub 1. juulil 2011 uus korruptsioonivastane seadus (Bribery Act 2010), mis kehtib ühtmoodi nii Briti ettevõtetele kui ka mujal maailmas asutatud äriühingutele, kelle äritegevus või ka osa sellest omab puutumust Suurbritanniaga

  13. Ulukiliha sobib ka jõululauale / Raivo Feldmann

    Index Scriptorium Estoniae

    Feldmann, Raivo

    2009-01-01

    Adavere lihakauplusest, mida on külastanud ka president Toomas Hendrik Ilves ja proua Evelin Ilves. OÜ Chef Foodsi kaupa tellib ka presidendi kantselei. Juuresoleval fotol president Toomas Hendrik Ilves ja proua Evelin Ilves koos OÜ Chef Foodsi juhatuse liikme Veiko Villemi ja juhataja Priit Noorhaniga

  14. Fabrication of super-hydrophobic duo-structures

    Science.gov (United States)

    Zhang, X. Y.; Zhang, F.; Jiang, Y. J.; Wang, Y. Y.; Shi, Z. W.; Peng, C. S.

    2015-04-01

    Recently, super-hydrophobicity has attracted increasing attention due to its huge potential in the practical applications. In this paper, we have presented a duo-structure of the combination of micro-dot-matrix and nano-candle-soot. Polydimethylsiloxane (PDMS) was used as a combination layer between the dot-matrix and the soot particles. Firstly, a period of 9-μm dot-matrix was easily fabricated on the K9 glass using the most simple and mature photolithography process. Secondly, the dot-matrix surface was coated by a thin film of PDMS (elastomer: hardener=10:1) which was diluted by methylbenzene at the volume ratio of 1:8. Thirdly, we held the PDMS modified surface over a candle flame to deposit a soot layer and followed by a gentle water-risen to remove the non-adhered particles. At last, the samples were baked at 85°C for 2 hours and then the duo-structure surface with both micro-size dot-matrix and nano-size soot particles was obtained. The SEM indicated this novel surface morphology was quite like a lotus leaf of the well-know micro-nano-binary structures. As a result, the contact angle meter demonstrated such surface exhibited a perfect super-hydrophobicity with water contact angle of 153° and sliding angle of 3°. Besides, just listed as above, the fabrication process for our structure was quite more easy, smart and low-cost compared with the other production technique for super-hydrophobic surfaces such as the phase separation method, electrochemical deposition and chemical vapor deposition etc. Hence, this super-hydrophobic duo-structure reported in this letter was a great promising candidate for a wide and rapid commercialization in the future.

  15. The sensitivity of the Late Saalian (140 ka) and LGM (21 ka) Eurasian ice sheets to sea surface conditions

    Energy Technology Data Exchange (ETDEWEB)

    Colleoni, Florence [Centro Euro-Mediterraneo per i Cambiamenti Climatici, Bologna (Italy); UJF, CNRS, Laboratoire de Glaciologie et Geophysique de l' Environnement, Saint Martin d' Heres Cedex (France); Stockholm University, Department of Geological Sciences, Stockhlom (Sweden); Liakka, Johan [Stockholm University, Department of Meteorology, Stockholm (Sweden); Krinner, Gerhard; Peyaud, Vincent [UJF, CNRS, Laboratoire de Glaciologie et Geophysique de l' Environnement, Saint Martin d' Heres Cedex (France); Jakobsson, Martin [Stockholm University, Department of Geological Sciences, Stockhlom (Sweden); Masina, Simona [Centro Euro-Mediterraneo per i Cambiamenti Climatici, Istituto Nazionale di Geofisica e Vulcanologia, Bologna (Italy)

    2011-08-15

    This work focuses on the Late Saalian (140 ka) Eurasian ice sheets' surface mass balance (SMB) sensitivity to changes in sea surface temperatures (SST). An Atmospheric General Circulation Model (AGCM), forced with two preexisting Last Glacial Maximum (LGM, 21 ka) SST reconstructions, is used to compute climate at 140 and 21 ka (reference glaciation). Contrary to the LGM, the ablation almost stopped at 140 ka due to the climatic cooling effect from the large ice sheet topography. Late Saalian SST are simulated using an AGCM coupled with a mixed layer ocean. Compared to the LGM, these 140 ka SST show an inter-hemispheric asymmetry caused by the larger ice-albedo feedback, cooling climate. The resulting Late Saalian ice sheet SMB is smaller due to the extensive simulated sea ice reducing the precipitation. In conclusion, SST are important for the stability and growth of the Late Saalian Eurasian ice sheet. (orig.)

  16. Stratégies vidéo-ludiques d’habitation par un pygmée d’un monde démesuré : Congo Inc. Le testament de Bismarck d’In Koli Jean Bofane

    Directory of Open Access Journals (Sweden)

    Zoé Courtois

    2017-06-01

    Full Text Available In Congo Inc., In Koli Jean Bofane’s novel, the video game theme contributes to a hybrid diegetic process that switches between the story of IRL and in game adventures of Isookanga, a young pygmy. The novel plays – in the mechanical meaning of the word – between these two sides of diegesis, which enables us to consider the tension between reality and video game : if reality is uninhabitable for the pygmy, and made disproportionate by a certain “globalisation”, the transition to data superimposes upon it the reign of information, which shapes, at last, an inhabitable imago mundi allowing, in addition, an action on reality. What is more, from a linguistic point of view, the video game produces what we could call a language of globalisation, that is to say a language spoken at the global scale regardless of socio-cultural and linguistic belongings. The gamers’ language, in this French speaking novel, is thus under the double influence of its playing field (the world and of the game itself which is conditioned by its coding, speed and performativity requirements. Henceforth, it is precisely in these diegetic and linguistic spaces under tension, and through the video game that a poetic way of inhabitablebiting the world rebuilds itself, together with a new measure of the world.

  17. Deep-Space Ka-Band Flight Experience

    Science.gov (United States)

    Morabito, D. D.

    2017-11-01

    Lower frequency bands have become more congested in allocated bandwidth as there is increased competition between flight projects and other entities. Going to higher frequency bands offers significantly more bandwidth, allowing for the use of much higher data rates. However, Ka-band is more susceptible to weather effects than lower frequency bands currently used for most standard downlink telemetry operations. Future or prospective flight projects considering deep-space Ka-band (32-GHz) telemetry data links have expressed an interest in understanding past flight experience with received Ka-band downlink performance. Especially important to these flight projects is gaining a better understanding of weather effects from the experience of current or past missions that operated Ka-band radio systems. We will discuss the historical flight experience of several Ka-band missions starting from Mars Observer in 1993 up to present-day deep-space missions such as Kepler. The study of historical Ka-band flight experience allows one to recommend margin policy for future missions. Of particular interest, we will review previously reported-on flight experience with the Cassini spacecraft Ka-band radio system that has been used for radio science investigations as well as engineering studies from 2004 to 2015, when Cassini was in orbit around the planet Saturn. In this article, we will focus primarily on the Kepler spacecraft Ka-band link, which has been used for operational telemetry downlink from an Earth trailing orbit where the spacecraft resides. We analyzed the received Ka-band signal level data in order to characterize link performance over a wide range of weather conditions and as a function of elevation angle. Based on this analysis of Kepler and Cassini flight data, we found that a 4-dB margin with respect to adverse conditions ensures that we achieve at least a 95 percent data return.

  18. KA-102 Film/EO Standoff System

    Science.gov (United States)

    Turpin, Richard T.

    1984-12-01

    The KA-102 is an in-flight selectable film or electro-optic (EU) visible reconnaissance camera with a real-time data link. The lens is a 66-in., f/4 refractor with a 4° field-of-view. The focal plane is a continuous line array of 10,240 COD elements that opera tes in the pushbroom mode. In the film mode, the camera use standard 5-in.-wide 3414 or 3412 film. The E0 imagery is transmitted up to 500 n.mi. to the ground station over a 75-Mbit/sec )(- band data link via a relay aircraft (see Figure 1). The camera may be controlled from the ground station via an uplink or from the cockpit control panel. The 8-ft-diameter ground tracking antenna is located on high ground and linked to the ground station via a 1-mile-long, two-way fiber optic system. In the ground station the imagery is calibrated and displayed in real time on three crt's. Selected imagery may be stored on disk and enhanced, analyzed, and annotated in near-real-time. The imagery may be enhanced and magnified in real time. Hardcopy frames may be made on 8 x 10-in. Polaroid, 35-1m film, or dry silver paper. All the received image and engineering data is recorded on a high-density tape recorder. The aircraft track is recorded on a map plotter. Ground support equipment (GSE), manuals, spares, and training are included in the system. Falcon 20 aircraft were modified on a subcontract to Dynelectron--Ft. Worth.

  19. Organic impurities harmful to arc discharge in multi-ampere duo-pigatron ion source

    International Nuclear Information System (INIS)

    Peng Zhudong; Wang Shouhu; Chen Miaosun; Huang Chongan; Ge Yishan; Fu Peng; E Maohuai

    1989-01-01

    Besides mechanism producing plasmain Duo-Pigatron Ion Source, the main purpose of this paper is to introduce the problem on arc discharge exhaustion caused by oil pollution. The problem was discovered during developing a 15 cm Duo-Pigatron Ion Source. The paper also describes its physical process

  20. Performance of Artificial Intelligence Workloads on the Intel Core 2 Duo Series Desktop Processors

    Directory of Open Access Journals (Sweden)

    Abdul Kareem PARCHUR

    2010-12-01

    Full Text Available As the processor architecture becomes more advanced, Intel introduced its Intel Core 2 Duo series processors. Performance impact on Intel Core 2 Duo processors are analyzed using SPEC CPU INT 2006 performance numbers. This paper studied the behavior of Artificial Intelligence (AI benchmarks on Intel Core 2 Duo series processors. Moreover, we estimated the task completion time (TCT @1 GHz, @2 GHz and @3 GHz Intel Core 2 Duo series processors frequency. Our results show the performance scalability in Intel Core 2 Duo series processors. Even though AI benchmarks have similar execution time, they have dissimilar characteristics which are identified using principal component analysis and dendogram. As the processor frequency increased from 1.8 GHz to 3.167 GHz the execution time is decreased by ~370 sec for AI workloads. In the case of Physics/Quantum Computing programs it was ~940 sec.

  1. Aeroflot tahab ka ise Moskvast Tallinna lennata / Raimo Poom

    Index Scriptorium Estoniae

    Poom, Raimo

    2011-01-01

    Aeroflot kavatseb suurendada oma rahvusvaheliste reiside hulka umbes veerandi võrra, uute sihtkohtade seas on infoportaali ATO.ru andmeil ka Tallinn. Tallinna lennujaama juhatuse liikme Erik Sakkovi kommentaare

  2. GPM, DPR Level 2A Ka Precipitation V03

    Data.gov (United States)

    National Aeronautics and Space Administration — The 2AKa algorithm provides precipitation estimates from the Ka radar of the Dual-Frequency Precipitation Radar on the core GPM spacecraft. The product contains two...

  3. NOAA Ship Ka'imimoana Underway Meteorological Data, Quality Controlled

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Ka'imimoana Underway Meteorological Data (delayed ~10 days for quality control) are from the Shipboard Automated Meteorological and Oceanographic System...

  4. Under tõi kirjanduse juurde ka Ilvese / Jaanus Kulli

    Index Scriptorium Estoniae

    Kulli, Jaanus, 1955-

    2009-01-01

    Sirje Kiini raamatust "Marie Under : elu, luuletaja identiteet ja teoste vastuvõtt" (Tallinn : Tänapäev, 2009), mille esitlus toimus 10. dets. Kirjanike Majas Tallinnas. Sõnavõtuga esines ka president Toomas Hendrik Ilves

  5. Deep space propagation experiments at Ka-band

    Science.gov (United States)

    Butman, Stanley A.

    1990-01-01

    Propagation experiments as essential components of the general plan to develop an operational deep space telecommunications and navigation capability at Ka-band (32 to 35 GHz) by the end of the 20th century are discussed. Significant benefits of Ka-band over the current deep space standard X-band (8.4 GHz) are an improvement of 4 to 10 dB in telemetry capacity and a similar increase in radio navigation accuracy. Propagation experiments are planned on the Mars Observer Mission in 1992 in preparation for the Cassini Mission to Saturn in 1996, which will use Ka-band in the search for gravity waves as well as to enhance telemetry and navigation at Saturn in 2002. Subsequent uses of Ka-band are planned for the Solar Probe Mission and the Mars Program.

  6. Amobilisasi Sel Bacillus licheniformis KA-08 dalam Menghasilkan Keratinase Termostabil

    Directory of Open Access Journals (Sweden)

    Anthoni Agustien

    2012-10-01

    Full Text Available Isolate local Bacillus licheniformis KA-08 known extracellular thermostable keratinase producers. Scale up of thermostable keratinase production can be with cells immobilized. The objective of the research is to thermostable keratinase production of B. licheniformis KA-08 cells immobilization. Thermostable keratinase activities were determined with modification of Brandelli and Riffel method. Protein concentration of enzyme determined with Lowry method. Immobilization of cells by Ca-alginate matrix with Adinarayana method, alginate concentration and amount of alginate bead effects with Beshay method. The result extracellular thermostable keratinase of B. licheniformis KA-08 cells immobilized was maximum produced at 12 times incubation with activity as 9.25 U/mg. Three percent alginate has optimum activity. Three hundred alginate beads has optimum activity. Cells immobilized ofB. licheniformis KA-08 has scale up of thermostable keratinase activity at 2 times than free cells. Thermostable keratinase produced by cell immobilized was nine cycles.

  7. Swedbank hüvitab tekitatud kahju ka fondi vahetajatele

    Index Scriptorium Estoniae

    2009-01-01

    Swedbank hüvitab veel enne 2009. aasta lõppu Private Debt Fondi osaku puhasväärtuse alanemise kolmandas kvartalis ning kompensatsiooni saavad ka need kliendid, kes on andnud sisse pensionifondi vahetamise taotluse

  8. Calibration techniques for a fast duo-spectrometer

    International Nuclear Information System (INIS)

    Chapman, J.T.; Den Hartog, D.J.

    1996-06-01

    The authors have completed the upgrade and calibration of the Ion Dynamics Spectrometer (IDS), a high-speed Doppler duo-spectrometer which measures ion flow and temperature in the MST Reversed-field Pinch. This paper describes an in situ calibration of the diagnostic's phase and frequency response. A single clock was employed to generate both a digital test signal and a digitizer trigger thus avoiding frequency drift and providing a highly resolved measurement over the system bandwidth. Additionally, they review the measurement of the spectrometer instrument function and absolute intensity response. This calibration and subsequent performance demonstrate the IDS to be one of the fastest, highest throughput diagnostics of its kind. Typical measurements are presented

  9. SYMBOL LEVEL DECODING FOR DUO-BINARY TURBO CODES

    Directory of Open Access Journals (Sweden)

    Yogesh Beeharry

    2017-05-01

    Full Text Available This paper investigates the performance of three different symbol level decoding algorithms for Duo-Binary Turbo codes. Explicit details of the computations involved in the three decoding techniques, and a computational complexity analysis are given. Simulation results with different couple lengths, code-rates, and QPSK modulation reveal that the symbol level decoding with bit-level information outperforms the symbol level decoding by 0.1 dB on average in the error floor region. Moreover, a complexity analysis reveals that symbol level decoding with bit-level information reduces the decoding complexity by 19.6 % in terms of the total number of computations required for each half-iteration as compared to symbol level decoding.

  10. Gestão integrada de resíduos : o impacto ambiental

    OpenAIRE

    Oliveira, Rosário

    2004-01-01

    Faz-se uma introducão à politica de gestão integrada de resíduos para enquadrar a valorização de resíduos como política desejável para assegurar um desenvolvimento sustentado. Referem-se de seguida metodologias para avaliação do impacto ambiental da utilização de resíduos que possam ser usados como materiais de construção civil e obras públicas, ressalvando-se alguma falta de enquadramento legal.

  11. Srovnání žákovské obliby školy a matematiky pohledem mezinárodních šetření/ A comparison of satisfaction with school and mathematics from the perspective of international testing programs

    Directory of Open Access Journals (Sweden)

    Miroslava Federičová

    2015-04-01

    Full Text Available Spokojenost žáků ve škole, obliba školy a učení zvyšují intenzitu osobního zapojení žáků do výuky, jejich ztotožnění se s procesem vzdělávání, což v konečném důsledku může mít výrazný pozitivní dopad na samotné výsledky vzdělávání. Cílem naší analýzy je podrobnější empirické zmapování oblíbenosti školy a učení se matematice, jak je vnímaná a vykazovaná žáky 4., 8., 9. a 10. ročníků na základě různých mezinárodních šetření TIMSS a PISA. Zaměřujeme se na případ České republiky, jejíž žáci vykazují abnormálně nízkou oblibu školy a učení se matematice i v jiných šetřeních. V první části prezentujeme podrobnější mezinárodní srovnání, v druhé části se soustředíme na oblibu u specifických skupin žáků a ve třetí části na asociace s charakteristikami škol a učitelů. Pro všechny země je charakteristický pokles obliby školy a učení s postupem do vyšších ročníků, nižší obliba u chlapců, pozitivní asociace se vzdělávacími výsledky žáků a vzdělaností rodičů, a to především ve vyšších ročnících. Ve srovnání s evropskými zeměmi je velmi nízká obliba školy a učení se v Česku dána především výrazně negativnějšími postoji chlapců, což se nejvíce projevuje v 8. třídách základních škol, kde je také patrná vysoká míra neobliby u žáků s nejhoršími výsledky. Podíl variace obliby vysvětlitelný faktory na straně učitelů a škol zachycenými šetřením TIMSS je velmi nízký.

  12. On the development of protein pKa calculation algorithms

    Science.gov (United States)

    Carstensen, Tommy; Farrell, Damien; Huang, Yong; Baker, Nathan A.; Nielsen, Jens Erik

    2011-01-01

    Protein pKa calculation methods are developed partly to provide fast non-experimental estimates of the ionization constants of protein side chains. However, the most significant reason for developing such methods is that a good pKa calculation method is presumed to provide an accurate physical model of protein electrostatics, which can be applied in methods for drug design, protein design and other structure-based energy calculation methods. We explore the validity of this presumption by simulating the development of a pKa calculation method using artificial experimental data derived from a human-defined physical reality. We examine the ability of an RMSD-guided development protocol to retrieve the correct (artificial) physical reality and find that a rugged optimization landscape and a huge parameter space prevent the identification of the correct physical reality. We examine the importance of the training set in developing pKa calculation methods and investigate the effect of experimental noise on our ability to identify the correct physical reality, and find that both effects have a significant and detrimental impact on the physical reality of the optimal model identified. Our findings are of relevance to all structure-based methods for protein energy calculations and simulation, and have large implications for all types of current pKa calculation methods. Our analysis furthermore suggests that careful and extensive validation on many types of experimental data can go some way in making current models more realistic. PMID:21744393

  13. A 130 ka reconstruction of rainfall on the Bolivian Altiplano

    Science.gov (United States)

    Placzek, C. J.; Quade, J.; Patchett, P. J.

    2013-02-01

    New efforts to link climate reconstructions from shoreline deposits and sediment cores yield an improved and more detailed lake history from the Bolivian Altiplano. On the Southern Altiplano, 10 lake oscillations have been identified from this new unified chronology, each coincident with North Atlantic cold events such as Heinrich Events H5, H2, H1, and the Younger Dryas. By coupling this new lake history to a hydrologic budget model we are able to evaluate precipitation variability on the Southern Bolivian Altiplano over the last 130 ka. These modeling efforts underscore the relative aridity of the Altiplano during the rare and small lake cycles occurring between 80 and 20 ka, when colder temperatures combined with little or no change in rainfall produced smaller paleolakes. Relative aridity between 80 and 20 ka contrasts with the immense Tauca lake cycle (18.1-14.1 ka), which was six times larger than modern Lake Titicaca and coincided with Heinrich Event 1. This improved paleolake record from the Southern Altiplano reveals a strong link between central Andean climate and Atlantic sea-surface temperature gradients during the late Pleistocene, even though today rainfall variability is driven mostly by Pacific sea-surface temperature anomalies associated with El Niño/Southern Oscillation. However, not all Heinrich Events appear to result in lake expansions, most conspicuously during the global cold interval between 80 and 20 ka when the Altiplano and Amazon Basin were relatively arid.

  14. Diagnóstico dos resíduos sólidos do setor agrossilvopastoril : resíduos sólidos inorgânicos

    OpenAIRE

    Rosseto, Renato

    2013-01-01

    Este trabalho buscou realizar o diagnóstico preliminar dos resíduos sólidos inorgânicos gerados no setor agrossilvopastoril, especialmente nos segmentos de agrotóxicos, fertilizantes, insumos farmacêuticos veterinários, além dos resíduos sólidos domésticos (RSDs) rurais Os assuntos foram separados em seções. De forma geral, a ausência de informações oficiais sistematizadas seguiu como a principal dificuldade em realizar o diagnóstico dos resíduos sólidos inorgânicos presentes no setor agrossi...

  15. DuoPIGatron ion sources for PLT injectors

    International Nuclear Information System (INIS)

    Tsai, C.C.; Stirling, W.L.; Haselton, H.H.; Davis, R.C.; Schechter, D.E.

    1977-01-01

    Plasma heating requirements for the Princeton Large Torus (PLT) are set at about 1 MJ total beam energy for 3 MW beam power of energetic hydrogen (or deuterium) neutrals at 40 keV. To fulfill this design goal from four neutral beam injectors, the duoPlGatron ion source originally developed at ORNL has been modified, developed, and scaled-up to versions with 20-cm and/or 22-cm grid diameters. Utilizing the multipole line cusp magnetic field confinement for the ionizing electrons and created Philips Ionization Gauge (PIG) plasma, these sources generate a uniform (+-5 percent density variation over 23-cm diam) and dense plasma (about 2 x 10 12 cm 3 at the extraction surface). Such sources have been operated reliably to deliver a beam current exceeding 70 A of hydrogen ions at 40 keV. For such a beam condition the source is capable of running with an arc pulse of 0.5 sec. Moreover, the corresponding arc efficiency is very high, below 1.0 KW arc power per ampere of ion beam current. In this paper we describe the plasma generation, source characteristics and arc efficiency as functions of magnetic fields, gas pressure, and arc power (including the arc voltage and current). The other exciting feature, high proton yield (exceeding 80 percent), will be discussed

  16. Predicting pKa for proteins using COSMO-RS

    DEFF Research Database (Denmark)

    Andersson, Martin Peter; Jensen, Jan Halborg; Stipp, Susan Louise Svane

    2013-01-01

    We have used the COSMO-RS implicit solvation method to calculate the equilibrium constants, pKa, for deprotonation of the acidic residues of the ovomucoid inhibitor protein, OMTKY3. The root mean square error for comparison with experimental data is only 0.5 pH units and the maximum error 0.8 p......H units. The results show that the accuracy of pKa prediction using COSMO-RS is as good for large biomolecules as it is for smaller inorganic and organic acids and that the method compares very well to previous pKa predictions of the OMTKY3 protein using Quantum Mechanics/Molecular Mechanics. Our approach...

  17. Duo: A Human/Wearable Hybrid for Learning About Common Manipulate Objects

    National Research Council Canada - National Science Library

    Kemp, Charles C

    2002-01-01

    ... with them. Duo is a human/wearable hybrid that is designed to learn about this important domain of human intelligence by interacting with natural manipulable objects in unconstrained environments...

  18. Uudised : Duo Veski ئ Kalluste Londonis. Rahvusvaheline seminar EMAs. Heliloojate suaree / Igor Garshnek

    Index Scriptorium Estoniae

    Garšnek, Igor, 1958-

    2000-01-01

    Duo Veski ئ Kalluste annab 5. nov. kontserdi Londoni kuninglikus muusikakolledzhis VI Briti saksofonikongressi raames. 23. ja 24. okt. toimus EMAs "Tempuse" programmi raames seminar "Public relations and Fundraising". 30. okt. toimunud Heliloojate Liidu töökoosolekust

  19. The Determination of "Apparent" pKa's. Part II: An Experiment Using Very Weak Acids (pKa's > 11.4).

    Science.gov (United States)

    Cawley, John J.

    1995-01-01

    Presents an experiment designed to show students that the Henderson-Hasselbalch equation will fail when they use this particular one-half titration technique for acids with large pKa's. Involves determining the apparent pKa for such acids and using that to calculate the true pKa. (JRH)

  20. Biossorção de azul de metileno utilizando resíduos agroindustriais

    Directory of Open Access Journals (Sweden)

    Andressa C. Honorato

    2015-07-01

    Full Text Available O presente trabalho avaliou a capacidade de adsorção do corante azul de metileno nos resíduos da palha de milho e da bainha do palmito pupunha in natura. A caracterização dos resíduos foi determinada utilizando-se a microscopia eletrônica de varredura e espectroscopia na região do infravermelho a qual indicou a presença de grupos carboxílicos, hidroxila e carbonila. O tempo necessário para que o sistema atingisse o equilíbrio para ambos os resíduos foi de 240 min, seguindo uma cinética descrita pelo modelo de pseudo-segunda ordem. A capacidade máxima de adsorção foi de 102,8 mg g-1 para o resíduo da palha de milho, seguindo o modelo de isoterma de Langmuir e 50,9 mg g-1 para o resíduo de palmito pupunha, sendo que o modelo que melhor se ajusta foi Freundlich. Desta forma, esses resíduos são promissores para a adsorção do corante azul de metileno em efluentes.

  1. An evaluation of the SD Bioline HIV/syphilis duo test.

    Science.gov (United States)

    Holden, Jeffrey; Goheen, Joshua; Jett-Goheen, Mary; Barnes, Mathilda; Hsieh, Yu-Hsiang; Gaydos, Charlotte A

    2018-01-01

    Many health agencies now recommend routine HIV and syphilis testing for pregnant women and most-at-risk populations such as men who have sex with men. With the increased availability of highly sensitive, low cost rapid point-of-care tests, the ability to meet those recommendations has increased, granting wider access to quick and accurate diagnoses. Using blood specimens collected from a Baltimore City Health Department (BCHD) sexually transmitted infection clinic, we evaluated the SD Bioline HIV/Syphilis Duo, a rapid test that simultaneously detects antibodies to HIV and syphilis and has the potential to further benefit clinics and patients by reducing costs, testing complexity, and patient wait times. SD DUO HIV sensitivity and specificity, when compared to BCHD results, were 91.7 and 99.5%, respectively. SD DUO syphilis sensitivity and specificity, when compared to rapid plasma reagin, were 85.7 and 96.8%, respectively, and 69.7 and 99.7%, respectively, when compared to Treponema pallidum particle agglutination (TPPA). SD DUO syphilis sensitivity and specificity, when compared to a traditional screening algorithm, improved to 92.3 and 100%, respectively, and improved to 72.9 and 99.7%, respectively, when compared to a reverse screening algorithm. The HIV component of the SD DUO performed moderately well. However, results for the SD DUO syphilis component, when compared to TPPA, support the need for further testing and assessment.

  2. Multi-Step Ka/Ka Dichroic Plate with Rounded Corners for NASA's 34m Beam Waveguide Antenna

    Science.gov (United States)

    Veruttipong, Watt; Khayatian, Behrouz; Hoppe, Daniel; Long, Ezra

    2013-01-01

    A multi-step Ka/Ka dichroic plate Frequency Selective Surface (FSS structure) is designed, manufactured and tested for use in NASA's Deep Space Network (DSN) 34m Beam Waveguide (BWG) antennas. The proposed design allows ease of manufacturing and ability to handle the increased transmit power (reflected off the FSS) of the DSN BWG antennas from 20kW to 100 kW. The dichroic is designed using HFSS and results agree well with measured data considering the manufacturing tolerances that could be achieved on the dichroic.

  3. Che legend elab ka 40 aastat hiljem / Evelyn Kaldoja

    Index Scriptorium Estoniae

    Kaldoja, Evelyn, 1980-

    2007-01-01

    Ilmunud ka: Postimees : na russkom jazõke 9. okt. lk. 10. Argentinas sündinud ja 1967. aastal hukatud revolutsionääri Ernesto Che Guevara poliitikukarjäärist, tema panusest Kuuba revolutsiooni ja poliitikasse. Ernesto Che Guevara mälestamisest Ladina-Ameeerika riikides. Lisa: Kuuba revolutsioon; Che Guevara elu

  4. Euroopa Liit lubab toetada Afganistani ka tulevikus heldelt / Ahto Lobjakas

    Index Scriptorium Estoniae

    Lobjakas, Ahto, 1970-

    2005-01-01

    Euroopa Komisjoni president Jose Manuel Barroso ja Euroopa Liidu ühise välispoliitika peakoordinaator Javier Solana lubasid Afganistani presidendile Hamid Karzaile, et Euroopa Liit jätkab kestva välisabi osutamist riigile ka peale parlamendivalimiste toimumist septembris

  5. Additive manufacturing of Ka-band antennas for wireless communications

    DEFF Research Database (Denmark)

    Armendariz, Unai; Rommel, Simon; Rodríguez Páez, Juan Sebastián

    2016-01-01

    This paper presents the design and fabrication of WR-28 waveguide horn antennas operating in the Ka-band frequency range between 26.5 GHz and 40 GHz through 3D printing. Three different antennas are fabricated from polylactide acid filaments in conductive and non-conductive variants; the latter i...

  6. Ehitusala tõus jätkus ka mullu

    Index Scriptorium Estoniae

    2004-01-01

    Ilmunud ka: Delovõje Vedomosti, 3. nov. 2004, lk. 14-15. Ehitusfirmade TOP 95 aastal 2003. Kasumi TOP 40. Käibe TOP 40. TOP-i koostamise metoodika. Kasumi kasvu TOP 20. Käibe kasvu TOP 20. Omakapitali tootluse TOP 20. Rentaabluse TOP 20. Ehitusettevõtete üld- ja finantsandmed

  7. Kas läheb ka Ruudi tapmiseks? / Kati Murutar

    Index Scriptorium Estoniae

    Murutar, Kati, 1967-

    2006-01-01

    Lastefilm "Ruudi" : stsenaristid Katrin Laur, Aare Toikka, Aarne Mägi : režissöör Katrin Laur : nimiosas lapsnäitleja Paul Oskar Soe : Allfilm - MRP Matila Röhr Productions - Schmidtz Katze Filmkollektiv 2006. Võetud kõne alla ka Peeter Simmi "Kõrini!" ja Peeter Urbla "Stiilipeo" arvustaja meelest teenimatult mahategevad retsensioonid

  8. Tõnu Talve "Ka" tuuritab Kadrinas ja Rakveres / Ants Juske

    Index Scriptorium Estoniae

    Juske, Ants, 1956-2016

    2005-01-01

    Tõnu Talve maalidest. Kadrinas esitatud trio Fragile performance'st ja näitusest tsüklist "Ka" Rakveres. Rakvere näitusel Teele Tuuna ja kolmeaastase tütre Anneliise tööd. Trio Fragile koosseisus on kitarrist Robert Jürjendal, trummar Arvo Urb ja maalija Tõnu Talve

  9. Ka-Band Klystron Amplifier for CUBESATs, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — We propose a Ka-Band klystron amplifier for use in CubeSats. It will operate at 35.7 GHz, have 400 MHz of bandwidth, and output at least 32 watts of saturated power....

  10. A thermally switched 9 kA superconducting rectifier fluxpump

    NARCIS (Netherlands)

    ten Kate, Herman H.J.; Bunk, Paul B.; Steffens, Harry A.; van de Klundert, Louis J.M.

    1981-01-01

    The feasibility of superconducting rectifier-fluxpumps has to be demonstrated at current levels of 10 - 100 kA, where is asked for in the superconducting devices now being planned. An intensive program has been started at the low temperature division of the University of Twente to construct such

  11. "7 vaprat" ei lõpeta ka suvel / H. S.

    Index Scriptorium Estoniae

    H. S.

    2002-01-01

    Populaarne muusikaedetabelisaade "7 vaprat" läheb juunis ansamblitega Terminaator, Tuberkuloited, No Big Silence, Blacky, Speed Free ja Hell Can Wait suvetuurile. 11. juunil antakse kontsert Tartus, 12. juunil Rakveres, 13. juunil Pärnus ja 15. juunil Tallinnas. Kontsertidest valmivad ka telesaated, saatejuht Villu Tamme

  12. Überlegungen zu der sumerischen Zeichen-Gruppe ŠÈ.KA

    Directory of Open Access Journals (Sweden)

    Such-Gutiérrez, Marcos

    2003-12-01

    Full Text Available This paper deals with the different readings and meanings of the signs ŠÈ.KA. One of these readings is Zì.KA or zì-KA/ka, which has been traditionally interpreted as a kind of flour or as the process of milling. However, a revision of the texts from the Third Dynasty of Ur (c. 2117-2008 B.C., in which the group of signs ZÌ.KA o zì-KA/ka appears, shows that this term is actually a kind of gift.

    El presente artículo trata de las diferentes lecturas y significados del grupo de signos ŠÈ.KA. Entre dichas lecturas se encuentra la de ZÌ.KA o zì-KA/ka, que ha sido tradicionalmente interpretada bien como un tipo de harina, o bien como la acción que conduce a su fabricación. Sin embargo, una revisión de los textos de la III Dinastía de Ur (c. 2117-2008 a.C. en los que aparece el término ZÌ.KA o zì-KA/ka demuestra que, en realidad, con él se hace referencia a un tipo de regalo.

  13. Mars Global Surveyor Ka-Band Frequency Data Analysis

    Science.gov (United States)

    Morabito, D.; Butman, S.; Shambayati, S.

    2000-01-01

    The Mars Global Surveyor (MGS) spacecraft, launched on November 7, 1996, carries an experimental space-to-ground telecommunications link at Ka-band (32 GHz) along with the primary X-band (8.4 GHz) downlink. The signals are simultaneously transmitted from a 1.5-in diameter parabolic high gain antenna (HGA) on MGS and received by a beam-waveguide (BWG) R&D 34-meter antenna located in NASA's Goldstone Deep Space Network (DSN) complex near Barstow, California. The projected 5-dB link advantage of Ka-band relative to X-band was confirmed in previous reports using measurements of MGS signal strength data acquired during the first two years of the link experiment from December 1996 to December 1998. Analysis of X-band and Ka-band frequency data and difference frequency (fx-fka)/3.8 data will be presented here. On board the spacecraft, a low-power sample of the X-band downlink from the transponder is upconverted to 32 GHz, the Ka-band frequency, amplified to I-W using a Solid State Power Amplifier, and radiated from the dual X/Ka HGA. The X-band signal is amplified by one of two 25 W TWTAs. An upconverter first downconverts the 8.42 GHz X-band signal to 8 GHz and then multiplies using a X4 multiplier producing the 32 GHz Ka-band frequency. The frequency source selection is performed by an RF switch which can be commanded to select a VCO (Voltage Controlled Oscillator) or USO (Ultra-Stable Oscillator) reference. The Ka-band frequency can be either coherent with the X-band downlink reference or a hybrid combination of the USO and VCO derived frequencies. The data in this study were chosen such that the Ka-band signal is purely coherent with the X-band signal, that is the downconverter is driven by the same frequency source as the X-band downlink). The ground station used to acquire the data is DSS-13, a 34-meter BWG antenna which incorporates a series of mirrors inside beam waveguide tubes which guide the energy to a subterranean pedestal room, providing a stable environment

  14. Duo_2-Steel cermet manufacturing technology for PWR Spent Nuclear Fuel (SNF) casks

    International Nuclear Information System (INIS)

    Siti Alimah; Budiarto

    2005-01-01

    Assessment of DUO_2-Steel cermet manufacturing technology for PWR SNF casks has been done. DUO_2-Steel cermet consisting of DUO_2 particulates and other particulates, embedded in a steel matrix. Cermet SNF casks have the potential for superior performance compared with casks constructed of other materials. The addition of DUO_2 ceramic particulates can increase SNF cask capacity, improve of repository performance and disposal of excess depleted uranium as potential waste. Two sets of cermet manufacturing technologies are casting and powder metallurgy. Three casting methods are infusion casting, traditional casting and centrifugal casting. While for powder metallurgy methods there are traditional method and new method. DUO_2-Steel cermet have traditionally been produced by powder metallurgy methods. The production of a cask, however, presents special requirements: the manufacture of an annular object with weights up to 100 tons, and methods are being not to manufacture a cermet of this size and geometry. A new powder metallurgy method, is a method for manufacturing cermet for PWR SNF cask. This powder metallurgy techniques have potentials low costs and provides greater freedom In the design of the cermet cask by allowing variable cermet properties. (author)

  15. Kui suudab Steve, suudab ka Apple / Tarvo Vaarmets

    Index Scriptorium Estoniae

    Vaarmets, Tarvo

    2008-01-01

    Ehkki Apple'i kolmanda kvartali kasum kasvas kolmandiku võrra ja oli oodatust kümnendiku jagu suurem, langes ettevõtte aktsia hind börsil. Investoreid teeb rahutuks nii ettevõtte juhi Steve Jobsi tervis kui ka Apple'i majandusprognoos neljandaks kvartaliks. Lisa: Analüütikud on aktsia suhtes üksmeelel. Diagramm: Aktsia hinnal taas suund alla

  16. Riigikogus tehakse ka tööd / Vilja Savisaar

    Index Scriptorium Estoniae

    Savisaar, Vilja, 1962-

    2007-01-01

    Ilmunud ka: Sakala, 13. juuni 2007, lk. 2; Lääne Elu, 14. juuni 2007, lk. 2; Põhjarannik, 14. juuni 2007, lk. 2; Severnoje Poberezhje, 14. juuni 2007, lk. 2; Vooremaa, 14. juuni 2007, lk. 2; Harju Ekspress, 15. juuni 2007, lk. 8; Järva Teataja, 16. juuni 2007, lk. 2; Koit, 21. juuni 2007, lk. 6. Parlamendiliige Keskerakonna fraktsiooni poolt parlamendis algatatud eelnõudest

  17. Eestil on Euroopas ka oma tee / Jürgen Ligi

    Index Scriptorium Estoniae

    Ligi, Jürgen, 1959-

    2004-01-01

    Ilmunud ka: Põhjarannik, 17. apr. 2004, lk. 2; Severnoje Poberezhje, 17. apr. 2004, lk. 2; Koit,17. apr. 2004, lk. 6; Meie Maa, 17. apr. 2004, lk. 2; Hiiu Leht, 20. apr. 2004, lk. 2; Virumaa Nädalaleht, 23. apr. 2004, lk. 2; Sakala, 23. apr. 2004, lk. 2; Valgamaalane, 8. mai 2004, lk. 2. Maksu- ja sotsiaalpoliitika otsustusõigusest ning kaitsmisest EL-i riikides

  18. ATLAS computing operations within the GridKa Cloud

    International Nuclear Information System (INIS)

    Kennedy, J; Walker, R; Olszewski, A; Nderitu, S; Serfon, C; Duckeck, G

    2010-01-01

    The organisation and operations model of the ATLAS T1-T2 federation/Cloud associated to the GridKa T1 in Karlsruhe is described. Attention is paid to Cloud level services and the experience gained during the last years of operation. The ATLAS GridKa Cloud is large and divers spanning 5 countries, 2 ROC's and is currently comprised of 13 core sites. A well defined and tested operations model in such a Cloud is of the utmost importance. We have defined the core Cloud services required by the ATLAS experiment and ensured that they are performed in a managed and sustainable manner. Services such as Distributed Data Management involving data replication,deletion and consistency checks, Monte Carlo Production, software installation and data reprocessing are described in greater detail. In addition to providing these central services we have undertaken several Cloud level stress tests and developed monitoring tools to aid with Cloud diagnostics. Furthermore we have defined good channels of communication between ATLAS, the T1 and the T2's and have pro-active contributions from the T2 manpower. A brief introduction to the GridKa Cloud is provided followed by a more detailed discussion of the operations model and ATLAS services within the Cloud.

  19. Reverberation Mapping of the Kepler target KA1858+48

    Science.gov (United States)

    Pei, Liuyi; Barth, A. J.; Malkan, M. A.; Cenko, S. B.; Clubb, K. I.; Filippenko, A. V.; Gates, E. L.; Horst, J.; Joner, M. D.; Leonard, D. C.; Sand, D. J.

    2013-01-01

    KA1858+48 is a Seyfert 1 galaxy at redshift 0.078 and is among the brightest active galaxies being monitored by the Kepler mission. We have carried out a reverberation mapping program designed to measure the broad-line region size and estimate the mass of the black hole in KA1858+48. We obtained spectroscopic data using the Kast Spectrograph at the Lick 3 m telescope during dark runs from late winter through fall of 2012, by requesting an observation on each night that the Kast Spectrograph was mounted on the telescope. We also obtained V-band images from the Nickel 1 m telescope at Lick Observatory, the 0.9 m telescope at Brigham Young University West Mountain Observatory, the Faulkes Telescope North at the Las Cumbres Observatory Global Telescope, the KAIT telescope at Lick Observatory, and the 1 m telescope at Mt. Laguna Observatory. The H-beta light curve shows a lag time of approximately 12 days with respect to the V-band continuum flux variations. We will present the continuum and emission-line light curves, cross-correlation lag measurements, and a preliminary estimate of the black hole mass in KA1858+48.

  20. X/Ka Celestial Frame Improvements: Vision to Reality

    Science.gov (United States)

    Jacobs, C. S.; Bagri, D. S.; Britcliffe, M. J.; Clark, J. E.; Franco, M. M.; Garcia-Miro, C.; Goodhart, C. E.; Horiuchi, S.; Lowe, S. T.; Moll, V. E.; hide

    2010-01-01

    In order to extend the International Celestial Reference Frame from its S/X-band (2.3/8.4 GHz) basis to a complementary frame at X/Ka-band (8.4/32 GHz), we began in mid-2005 an ongoing series of X/Ka observations using NASA s Deep Space Network (DSN) radio telescopes. Over the course of 47 sessions, we have detected 351 extra-galactic radio sources covering the full 24 hours of right ascension and declinations down to -45 degrees. Angular source position accuracy is at the part-per-billion level. We developed an error budget which shows that the main errors arise from limited sensitivity, mismodeling of the troposphere, uncalibrated instrumental effects, and the lack of a southern baseline. Recent work has improved sensitivity by improving pointing calibrations and by increasing the data rate four-fold. Troposphere calibration has been demonstrated at the mm-level. Construction of instrumental phase calibrators and new digital baseband filtering electronics began in recent months. We will discuss the expected effect of these improvements on the X/Ka frame.

  1. Study of the suitability of DUO plastic bags for the storage of dynamites.

    Science.gov (United States)

    Sáiz, Jorge; Ferrando, José-Luis; Atoche, Juan-Carlos; García-Ruiz, Carmen

    2013-10-10

    A comparative study on the retentiveness of two plastic bags (DUO and Royal Pack) has been carried out by gas chromatography with mass spectrometry detection. Two types of dynamites were packed in both plastic bags. The bags were placed into glass jars and headspace analyses were performed over 11 weeks to detect whether the volatile constituents of the dynamites were released from the bags. DUO plastic bags showed much better retentiveness than Royal Pack plastic bags. Ethylene glycol dinitrate (EGDN) was quickly detected in the headspace of the glass jars containing Royal Pack plastic bags after 1 week of storage. On the contrary, only a weak signal of EGDN, which was not detectable in the total ion chromatogram, was detected after 11 weeks of storage. Moreover, DUO plastic bags have shown less background signals than the Royal Pack bags, being the former bags much more suitable for the storage of dynamites. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  2. GERENCIAMENTO DE RESÍDUOS SÓLIDOS: O CASO DE UMA INDÚSTRIA CATARINENSE

    OpenAIRE

    Ávila, Lucas Veiga; Damke, Luana Inês; Burg, Fernando; Burg, Giovane

    2015-01-01

    Os resíduos sólidos não devem ser expostos ou colocados em qualquer lugar, enterrados, ou lançados nos rios, mares, córregos ou depósitos clandestinos, é necessário encontrar soluções que possam reduzir a contaminação e os impactos ambientais ocasionados por esse tipo de resíduo tendo em vista a qualidade de vida e a preservação do Planeta. O presente estudo tem como objetivo analisar as estratégias de gerenciamento de resíduos sólidos, verificando os tipos e gerenciamento para melhoria no pr...

  3. Concentrating Solar Power Projects - KaXu Solar One | Concentrating Solar

    Science.gov (United States)

    Power | NREL KaXu Solar One This page provides information on KaXu Solar One, a concentrating solar power (CSP) project, with data organized by background, parcipants and power plant configuration . Status Date: April 14, 2015 Project Overview Project Name: KaXu Solar One Country: South Africa Location

  4. AltiKa: a Ka-band Altimetry Payload and System for Operational Altimetry during the GMES Period

    Directory of Open Access Journals (Sweden)

    Jacques Verron

    2006-03-01

    Full Text Available This paper describes the Ka-band altimetry payload and system that has beenstudied for several years by CNES, ALCATEL SPACE and some science laboratories.Altimetry is one of the major elements of the ocean observing system to be madesustainable through the GEOSS (Global Earth Observation System of Systems and GMES(Global Monitoring of the Environment and Security programs. A short review of somemission objectives to be fulfilled in terms of mesoscale oceanography in the frame of theGEOSS and GMES programs is performed. To answer the corresponding requirements, theapproach consisting in a constellation of nadir altimeter is discussed. A coupled Ka-bandaltimeter-radiometer payload is then described; technical items are detailed to explain howthis payload shall meet the science and operational requirements, and expectedperformances are displayed. The current status of the payload development and flightperspectives are given.

  5. Movimentos Mandibulares em Indivíduo com a Doença de Parkinson

    OpenAIRE

    Albuquerque, Lucas Carvalho Aragão

    2015-01-01

    Introdução: A Doença de Parkinson (DP) é uma patologia neurodegenerativa de quadro progressivo que afeta o sistema nervoso central. Resultando em sinais e sintomas motores e não motores característicos. As características motoras são por vezes evidenciadas em funções complexas que envolvem a alimentação do indivíduo, como a mastigação, afetando assim sua qualidade de vida. Entretanto, as características mastigatórias encontradas nesse grupo de indivíduos, ainda não foram claramente evidenciad...

  6. Elevation Change Derived from SARAL/ALtiKa Altimetric Mission: Quality Assessment and Performance of the Ka-Band

    Directory of Open Access Journals (Sweden)

    Quanming Yang

    2018-04-01

    Full Text Available The waveform retracking algorithm is a key factor that affects the accuracy of elevation change from satellite altimetry over an ice sheet. The elevation change results from four waveform retracker algorithms (ICE1/ICE2/Sea Ice/OCEAN provided by the Satellite with ARgos and ALtiKa (SARAL/ALtiKa data were compared using repeated SARAL data between March 2013 and April 2016 to determine the optimal retracker in the crossovers of descending and ascending orbits over a Greenland ice sheet (GrIS. The ICE1 provided slightly better results than the three other algorithms with the lowest standard deviation (SD of 0.30 m year−1. Further comparison was also conducted between the Satellite with ARgos and ALtiKa (SARAL and Operation ICEBridge laser data, thereby indicating that ICE1 was the best retracker with an Root Mean Square Error (RMSE of 0.43 m year−1. The distribution of elevation change rate and uncertainties over Greenland from SARAL were presented using the selected ICE1 retracker with a volume loss of 40 ± 12 km3 year−1. This volume loss did not include the fast-changing coastal areas of the GrIS. A large thinning was observed in Jakobshavn Isbræ, and a trend that extended far inland was also found from 2013–2016. Furthermore, a melting ice sheet was observed in the large areas northwest over the GrIS.

  7. Origin of the pKa shift of the catalytic lysine in acetoacetate decarboxylase.

    OpenAIRE

    Ishikita, Hiroshi

    2010-01-01

    The pKa value of Lys115, the catalytic residue in acetoacetate decarboxylate, was calculated using atomic coordinates of the X-ray crystal structure with consideration of the protonation states of all titratable sites in the protein. The calculated pKa value of Lys115 (pKa(Lys115)) was unusually low (approximately 6) in agreement with the experimentally measured value. Although charged residues impact pKa(Lys115) considerably in the native protein, the significant pKa(Lys115) downshift in the...

  8. Gestão de resíduos sólidos em restaurante escola

    Directory of Open Access Journals (Sweden)

    Bianca Peruchin

    2013-01-01

    Full Text Available Um dos maiores problemas ambientais da atualidade é a excessiva geração de resíduos e a sua destinação final ambientalmente adequada. As Instituições de Ensino Superior (IES são importantes fontes geradoras devido à diversidade de atividades de ensino, pesquisa e extensão realizadas no seu âmbito. Os Restaurantes Escola (RE atendem à comunidade acadêmica dos campi universitários, e caracterizam-se por produzir resíduos similares aos domésticos, mas em maior quantidade. Este estudo foi realizado com o objetivo de investigar a composição gravimétrica dos resíduos produzidos em um RE de uma IES localizada no sul do país, bem como conhecer a situação atual do gerenciamento dos resíduos. Os dados foram obtidos através da caracterização dos resíduos do RE durante cinco dias, de entrevista com os gestores responsáveis pelo estabelecimento e da observação direta no local. Averiguou-se a inexistência de um Plano de Gerenciamento dos Resíduos Sólidos no RE, bem como a ausência de práticas efetivas relacionadas ao manejo destes. A segregação dos resíduos é prejudicada devido à falta de lixeiras específicas e a sobrecarga dos funcionários quanto às atividades desempenhadas. Ao longo do período experimental foram caracterizados 547,068 Kg de resíduos, dos quais mais de 80% corresponderam à matéria orgânica. Conclui-se que o montante de resíduo orgânico gerado pode ser destinado à compostagem. Recomenda-se a implantação de uma infraestrutura adequada para o manejo dos resíduos, que pode ser feita através da elaboração e aplicação de um plano de gestão integrada dos resíduos sólidos no RE.Abstract Nowadays, the amount of waste generated and its proper final destination is one of the greatest environmental issues. Higher education institutions are an important source of waste due to the diversity of teaching, researching and extension activities performed in their facilities. The university

  9. Demographic, clinical and antibody characteristics of patients with digital ulcers in systemic sclerosis: data from the DUO Registry

    NARCIS (Netherlands)

    Denton, Christopher P.; Krieg, Thomas; Guillevin, Loic; Schwierin, Barbara; Rosenberg, Daniel; Silkey, Mariabeth; Zultak, Maurice; Matucci-Cerinic, Marco; Stetter, M.; Lackner, K.; Tomi, N.; Hafner, F.; Brodmann, M.; Kuen-Spiegel, M.; Kolle, H.; Raffier, B.; Hamberger, N.; Metz, S.; Siebel, C.; Trummer, M.; Thonhofer, R.; Illmer, X.; Trautinger, F.; Schmidt, P.; Rintelen, B.; Sautner, J.; Willfort-Ehringer, A.; Margeta, C.; Monshi, B.; Pirkhammer, D.; Richter, L.; Holzer, G.; Minmair, G.; Broll, H.; Takacs, M.; Hirschl, M.; Mesaric, P.; Feldmann, R.; Semmelweis, K.; Hundstorfer, M.; Reinhart, V.; Maurer, B.; Verner, D.; Distler, O.; Schmidt-Bosshard, R.; Bohmova, J.; Prochazkova, L.; Nemec, P.; Fojtik, Z.; Soukup, T.; Smrzova, A.; Suchy, D.; Zemanova, I.; Becvar, R.; Gawlik, A.; Koch, M.; Rauen, T.; Voss, B.; Kurthen, R.; Unholzer, A.; Starz, H.; Welzel, J.; Plaumann, K.; Merk, B.; Bloching, H. H.; Moosig, F.; Frey, P.; Kahl, S.; Schleenbecker, H.; Storck-Mueller, K.; Schwarting, A.; Hazenbiller, A.; Nichelmann, V.; Flaig, W.; Rumbaur, C.; Boesenberg, I.; Schmeiser, T.; Marx, J.; Mayer, L.; Stein, T.; Ochs, W.; Rasche, C.; Worm, M.; Riemekasten, G.; Deuschle, K.; Becker, M.; Kleiner, H. J.; Schulze, K.; Tiggers, C.; Peters, J.; Kirschke, J.; Schaefer, C.; Monshausen, M.; Mengden, T.; Sadeghlar, F.; Seidel, M.; Hillebrecht, C.; Andresen, J.; Reemtsen, R.; Stoeckl, F.; Sperling, S.; Podda, M.; Wagner, N.; Guenzel, J.; Wuerzburg, I.; Luethke, K.; Enderlein, M.; Kayser, M.; Gerber, A.; Haust, M.; Hoff, N. P.; Mota, R.; Akanay-Diesel, S.; Jahnke, K.; Mettler, S.; Toeller, S.; Zwenger, S.; Klein, E.; Hahn, K.; Beyer, C.; Distler, J.; Katzemich, A.; Erfurt-berge, C.; Sticherling, M.; Schuch, F.; Rapp, P.; Mitchell, A.; Freundlieb, C.; Rushentsova, U.; Himsel, A.; Henkemeier, U.; Eilbacher, P.; Ullrich-Guenther, C.; Neul, S.; Oelsner, M.; Hermanns, G.; Fiene, M.; Gause, A.; Mensing, C.; Klings, D.; Mensing, H.; Messall, J.; Zuper, R.; May, D.; Bruckner, L.; Sheikh, N.; Aries, P.; Kirchberg, S.; Funkert, A.; Blank, N.; Lupaschko, S.; Schwuerzer-Voit, M.; Meier, L.; Herr, U.; Meier, U.; Neek, G.; Wernitzsch, H.; Pfoehler, C.; Assmann, G.; Vosswinkel, J.; Krog, B.; Wollersdorfer, E.; Oltmann-Schroeder, J.; Zeuner, R.; Uhlig, S.; Barth, S.; Huegel, R.; Glaeser, R.; Rabe, B.; Schuster, J.; Scholz, J.; Kremer, K.; Robakidze-Torbahn, M.; Moinzadeh, P.; Mittag, M.; Dohse, A.; Muhlack, A.; Schultz, L.; Schult, S.; Frambach, Y.; Kettenbach, A.; Fell, I.; Schweda, K.; Steinbrink, K.; Podobinska, M.; Harmuth, W.; Nielen, C.; Kaczmarczyk, A.; Kellner, C.; von Oelhafen, J.; von Bildering, P. B.; Kunze, S.; Niedermeier, A.; Messer, G.; Sardy, M.; Bekou, V.; Belloni, B.; Huettig, B.; Ziai, M.; Hein, R.; Hallecker, A.; Gaubitz, M.; Hallermann, C.; Schmidt, K.; Herrgott, I.; Hildebrandt, B.; Eiden, E.; Guertler, I.; Gernot Scheibl, E.; Brand, H.; Kaeding, U.; Weiss, E.; Reischel, N.; Kern, S.; Baumann, C.; Hellmich, B.; Loeffler, C.; Pflugfelder, J.; Karaenke, P.; Ruchenburg, J.; Blume, J.; Zabel, M.; Deppermann, N.; Chromik, S.; Metzler, C.; Krupp, E.; Rumpel, H.; Krause Rostock, J.-O.; Kneitz, C.; Federow, I.; Schneider, K.; Semmler, M.; Hapke, S.; Barnd, A.; Linke, M.; Kampe-Juzak, E.; Knoebel, K.; Niefanger, K.; Wilhelm, H. U.; Lauterwein, B.; Fierlbeck, G.; Schanz, S.; Pfeiffer, C.; Hassel, R.; Wahn, H.; Schildt, K.; von Elling, A.; Boro, D.; Ebel, J.; Ahmadi, K.; Moritz, D.; Dietl, S.; Dyballa, J.; Alsheimer, B.; Schuetz, N.; Schuart, T.; Mueglich, C.; Tony, H. P.; Marina, P.; Deininger, F.; Hartmann, F.; Olsen, A. B.; Sondergaard, K. H.; Naderi, Y.; Iversen, L. V.; Karlsmark, T.; Knudsen, J. B.; Gil, J. G.; Lopez, J. C. F.; Tasende, J. A. P.; Gonzales, M. F.; Sandoval, A. A.; del Carmen Torres Martin, M.; Corteguera, M.; Barca, B. A.; Montes, I. C.; de la Torre, R. G.; Victoria Egurbide, M.; Pros, A.; Munoz, J.; Simeon, C. P.; Espinosa, G.; Espinposa, G.; Rodriguez, M. A. P.; Castellvi, I.; Mascaro, J. M.; Bellido, D.; Manzanedo, V. S.; Huertas, M. P.; Sanchez, M. D. M.; Trenado, M. S. S.; Garcia, P. V.; Gines Martinez, F.; Angeles Aquirre, M.; del Rio, A. H.; Vazquez, J. L. G.; Coleman, J. V.; Lopez, M. R.; Sanchez, P. S.; Aizpuru, E. M. F.; Mateo, F. J. N.; Callejas, J. L.; Ortego, N.; Santo, M. P.; Rubio, M.; Martin, I.; Cruz, A.; Crespo, M.; Ramos, P. C.; Fernandez, A. S.-A.; Filloy, J. A. M.; Rodriguez, T. R. V.; Marhuenda, A. R.; Blanco, J. J. R.; Hernan, M. G. B.; Mendoza, A. Z.; de la Puente, C.; Rabaneda, E. V.; de Vicuna, R. G.; del Mar Ripoll Macias, M.; del la Pena Lefebvre, P. G.; de Ramon, E.; Camps, M. T.; Fernandez, C.; Miguelez, R.; Uson, J.; Delgado, E. G.; Villaverde, V.; Maceiras, F.; Cruz, J.; Mosquera, J. A.; Mera, A.; Pampin, E. P.; Blanco, J. S.; Maneiro, J. R.; Diaz, J. J.; Losada, L.; Caamano, M.; Fernandez, S.; Insua, S. A.; Laurin, C. U.; Sanchez, J.; Fernandez, N. C.; Becerra, N. D.; Garcia, A.; Nicolas, G. M.; del Carmen Ortega de la O, M.; Rueda, A.; Calvo, J.; Roman Ivorra, J.; Sancho Alegre, J. J.; Barbado, J.; Montes, J.; Saez, L.; Kaarto, A.; Makinen, H.; Madaule, S.; Dadban, A.; Lok, C.; Ferrandiz, D.; Moiton, M. P.; Magy-Bertrand, N.; Taieb, A.; Droitcourt, C.; Belin, E.; Balquiere, S.; Prey, S.; Boulon, C.; Constans, J.; Richez, C.; Sassolas, B.; Misery, L.; Greco, M.; collet, E.; Berthier, S.; Leguy-Seguin, V.; Imbert, B.; Carpentier, P.; Blaise, S.; Maillard, H.; Beneton, N.; Launay, D.; Hachulla, E.; Woijtasik, G.; Charlanne, H.; Lambert, M.; Jourdain, N.; Hatron, P. Y.; Morell, S.; Spars, A.; Couraud, A.; Doeffel-hantz, V.; Fauchais, A. L.; Vidal, E.; Goudran, G.; Bezanahary, H.; Boussely, N.; Manea, P.; Dumonteil, S.; Loustaud-ratti, V.; Hot, A.; Coppere, B.; Desmurs-Clavel, H.; Ninet, J.; Girard-Madoux, M. H.; Granel, B.; Keynote, A.; Khau van Kien, A.; Rullier, P.; Le Quellec, A.; Riviere, S.; Bessis, D.; Cohen, J. D.; Farcas, C.; Granel-brocard, F.; Agard, C.; Durant, C.; Fuzibet, J. G.; Queyrel, V.; Berezne, A.; Guillevin, L.; Mouthon, L.; Frances, C.; Toledano, C.; Cabane, J.; Tiev, K.; Farge, D.; Keshtmand, H.; Lazareth, I.; Priollet, P.; Michon-Pasturel, U.; Wipff, J.; Assous, N.; Cartry, O.; Kostrzwewa, E.; Doutre, M. S.; Blum, L.; Reguiai, Z.; Letremy, A.; Perlat, A.; Cazalets-lacoste, C.; Decaux, O.; Jego, P.; Duval-modeste, A. B.; Deboves, O.; Sordet, C.; Chatelus, E.; Chiffot, H.; Sibillia, J.; Couret, B.; Moulis, G.; Sailler, L.; Adoue, D.; Gaches, F.; Diot, E.; Skowron, F.; Zenone, T.; Quemeneur, T.; Kyndt, X.; Wahl, D.; Zuily, S.; Moline, T.; Bravetti, V.; Galanopoulos, N.; Vasilopoulos, D.; Vlachoyannopoulos, P.; Kritikos, I.; Tsifetaki, N.; Koutroumbas, A.; Garyfallos, A.; Athanassiou, P.; Aslanidis, S.; Kamali, S.; Dimitroulas, T.; Galanopoulo, V.; Elezoglou, A.; Grier, A.; Murray, M.; O'Rourke, M.; Gabrielli, A.; Lapadula, G.; Serafino, L.; Terlizzi, N.; Bellissimo, S.; Stisi, S.; Malavolta, N.; Airo, P.; Vacca, A.; Battaglia, E.; Foti, R.; Mazzuca, S.; Bortoluzzi, A.; Trotta, F.; Galluccio, F.; Marucci, A.; Cantatore, F.; Bucci, R.; Puppo, F.; de Angeli, R.; Grassi, W.; Cipriani, P.; Mazzone, A.; Faggioli, P.; Severino, A.; Scorza, R.; Belloli, L.; Ughi, N.; Antivalle, M.; del Papa, N.; Maglione, W.; Zeni, S.; Ferri, C.; Colaci, M.; Varcasia, G.; Cuomo, G.; Cozzi, F.; Triolo, G.; Gatti, S.; Montecucco, C. M.; Doveri, M.; Nigro, A.; Olivieri, I.; Bajoochi, G.; Rosato, E.; Salsano, F.; Faustini, F.; Ferraccioli, G.; Colonna, L.; Pallotta, S.; Riccieri, V.; Mussi, A.; Bellisai, F.; Galeazzi, M.; Fusaro, E.; Saracco, M.; Pellerito, R.; Masolini, P.; de Vita, S.; Lombardi, S.; Lunardi, C.; Moolenburgh, J. D.; Heurkens, A. H. M.; Voskuyl, A.; Hak, A. E.; Stroes, E. S. K.; Remans, J.; Gerdes, V.; van Woerkom, J. M.; de Long, A. J. L.; Kaasjager, H. A. H.; Visser, H.; Janssen, M.; van Guldener, C.; van Neer, F.; Vos, P.; Peters, A. J.; Hulsmans, H.; Ronday, K.; Goekoop, R.; Ewals, J.; Valentijn, R.; de Bois, M.; Westedt, M. L.; Siewertsz van Reesema, D.; Knifjj-Dutmer, E.; Stolk, J. N.; Willems, H.; Kuiper-geertsma, D. G.; Baudaoin, P.; Fretter, P.; Westra, R.; Sonnaville, P. B. J.; Smit, A.; Bootsma, H.; Brouwer, L.; Bijl, M.; Molders, N.; Lebrun, C.; van der Veen, M. J.; Noordzij, M.; Houben, H.; Landewe, R. M. B.; Vercoutere, W.; Jahangier de Veen, Z. N.; Zijlstra, T. R.; Ubels, F.; Bruyn, G.; Jansen, P.; Schuerwegh, A.; Huizinga, T. W. J.; Paassen, P.; Hurkens, T.; Geurts, M.; van den Hoogen, F.; Vonk, M.; Jacobs, P. J. C.; Groenendael, J. H. L. M.; Seys, P.; van Zeben, D.; van Paassen, H.; Groenendael, J.; Han, K. H.; Wlarvens, M.; van Hagen, M.; van Daele, P.; Dolhain, R.; Gerards, A. H.; van der Lubbe, P.; Kanter, M. D. E.; Muller, W. H.; Ton, E.; van Krugten, M.; van Gameren, I.; Lanting, P.; den Hengst, C.; Gjessdal, C. G.; Hjertaker, S. L.; Madland, T. M.; Bendvold, A.; Bitter, H.; Hoffmann-Vold, A. M.; Midtvedt, O.; Bakland, G.; Aslkaksen, H. K.; Seip, M.; Kalstad, S.; Koldingsnes, W.; Grandauent, B.; Nordvag, B. Y.; Stran, E. K.; Skomsvoll, J.; Andersen, M.; Thomsen, R. S.; Pedersen, T.; Bakkeheim, V.; Cordeiro, A.; Alves, J.; Oliveira, S.; Coelho, P.; Resende, C.; Ponte, C.; Almeida, I.; Silva, I.; Santos, C.; Camara, I.; Costa, J.; Hellstrom, H.; Mohammad, A.; Lind, I.; Lind, K.; Bracin, T.; Liljequist, E.; Vingren, T.; Ostenson, A.; Hermansson, E.; Thorsson, C.; Soderlin, M.; Nordin, A.; Waldheim, E.; Vengemyr, K.; Albertsson, K.; Karlsson, M. L.; Rydvald, Y.; Rizk, M.; Dolnicar, A. S.; Lukac, J.; James, J.; McHugh, N.; Cole, S.; Brown, S.; Hamilton, A.; Faizal, A.; Hall, F.; Murphy, K.; Skingle, S.; Harris, H.; Madhok, F.; Hampson, R.; Baguley, E.; Ogunbambi G, O.; Lamb, J.; Anderson, M.; Moots, R.; White-Alao, B.; Morrison, C.; Dobson, J.; Gordon, P.; Salerno, R.; Denton, C.; Parker, L.; Ochiel, R.; Vincent, R.; Zimba, S.; Ngcozana, T.; Xu, Y.; D'Cruz, D.; Choong, L. M.; Herrick, A.; Wragg, E.; Manning, J.; Moore, T.; Kelsey, C.; Chakravarty, K.; Skyes, H.; Athiveer, P.

    2012-01-01

    The Digital Ulcers Outcome (DUO) Registry was designed to describe the clinical and antibody characteristics, disease course and outcomes of patients with digital ulcers associated with systemic sclerosis (SSc). The DUO Registry is a European, prospective, multicentre, observational, registry of SSc

  10. PASTA DE GESSO COM INCORPORAÇÃO DE RESÍDUO DE GESSO E ADITIVO RETARDADOR DE PEGA

    OpenAIRE

    TROVAO, A. P. M.

    2012-01-01

    A utilização do gesso pela construção civil gera um grande volume de resíduos, no entanto é um material que apresenta propriedades que o torna altamente competitivo no mercado. A principal causa da geração desse resíduo é o rápido endurecimento das pastas. A incorporação de resíduo de gesso às pastas provoca a aceleração no processo de endurecimento, podendo gerar maior volume de resíduos. Essa dissertação teve como objetivo buscar a forma de incorporação do resíduo às pastas de gesso para re...

  11. Proposta de um desenho da cadeia reversa para resíduos eletroeletrônicos

    Directory of Open Access Journals (Sweden)

    Reinaldo Alves de Sá Ferreira Júnior

    2016-12-01

    Full Text Available Com o crescimento da demanda dos equipamentos eletroeletrônicos e de sua rápida obsolescência, gera-se grande volume de resíduos, os quais possuem metais pesados altamente tóxicos, como o mercúrio, cobre, chumbo, arsênio, entre outros. A implantação da Logística Reversa (LR tem sido uma forma de gestão de grande sucesso, tanto no contexto internacional como nacional, e aliada a Politica Nacional de Resíduos Sólidos (PNRS tornou-se uma forma mais eficaz para o gerenciamento desses resíduos. Este artigo teve como objetivo, a partir da revisão na literatura referente à LR, PNRS e REEE apresentar atores, atribuições e processos associados, propondo, desta forma, uma estrutura geral para a cadeia de suprimentos reversa de pós-consumo associada aos REEE. A principal contribuição do artigo é proposição de um desenho da cadeia reversa para resíduos Eletroeletrônicos.

  12. Ka-band SAR interferometry studies for the SWOT mission

    Science.gov (United States)

    Fernandez, D. E.; Fu, L.; Rodriguez, E.; Hodges, R.; Brown, S.

    2008-12-01

    The primary objective of the NRC Decadal Survey recommended SWOT (Surface Water and Ocean Topography) Mission is to measure the water elevation of the global oceans, as well as terrestrial water bodies (such as rivers, lakes, reservoirs, and wetlands), to answer key scientific questions on the kinetic energy of ocean circulation, the spatial and temporal variability of the world's surface freshwater storage and discharge, and to provide societal benefits on predicting climate change, coastal zone management, flood prediction, and water resources management. The SWOT mission plans to carry the following suite of microwave instruments: a Ka-band interferometer, a dual-frequency nadir altimeter, and a multi-frequency water-vapor radiometer dedicated to measuring wet tropospheric path delay to correct the radar measurements. We are currently funded by the NASA Earth Science Technology Office (ESTO) Instrument Incubator Program (IIP) to reduce the risk of the main technological drivers of SWOT, by addressing the following technologies: the Ka-band radar interferometric antenna design, the on-board interferometric SAR processor, and the internally calibrated high-frequency radiometer. The goal is to significantly enhance the readiness level of the new technologies required for SWOT, while laying the foundations for the next-generation missions to map water elevation for studying Earth. The first two technologies address the challenges of the Ka-band SAR interferometry, while the high- frequency radiometer addresses the requirement for small-scale wet tropospheric corrections for coastal zone applications. In this paper, we present the scientific rational, need and objectives behind these technology items currently under development.

  13. Veretu retrobuum : [ka TPÜ AR kohvikust] / Allan Hmelnitski

    Index Scriptorium Estoniae

    Hmelnitski, Allan

    2004-01-01

    "Ka mina eelistan kõigi söögikohtade seast Teaduste Akadeemia puhvetit, mis on 100% breezhnevi aegne disain - kunstnahast lett, ümmargused madalad lauad, pikk-pikk nahkdiivan, kurgid ja tomatid mis maitsevad hästi ja tugevalt, täpselt nagu aastal 85, hallides ülikondades vanemad härrad vestlemas põlevkivist ja paeklindi ajaloost. Vot see on tõeline petlik naiivsus, turvalisus, rahu, muretus ja stabiilsus nagu aastal 76 ema süles."

  14. Deriving and Interpreting Ka(karimusubi in Premodern Japanese

    Directory of Open Access Journals (Sweden)

    Moreno MITROVIĆ

    2015-02-01

    Full Text Available This paper provides a new syntax and semantics for kakarimusubi (KM, a focus construction prominent in the grammar of Old Japanese (OJ and Early Middle (Classical Japanese (CJ, which diachronically developed into the interrogative construction in Modern Japanese (MdJ headed by the ka particle. Adopting Chierchia & Caponigro’s (2013 novel analysis of Free Relatives (FRs as embedded interrogatives, an FR-based analysis of KM is proposed so as to obtain a compositional semantic analysis of this focus construction as well as an account of the adnominal marking of the presuppositional musubi component of this grammatical construction.

  15. PODJETNIŠKA AKTIVNOST NA KOROŠKEM

    OpenAIRE

    Marhl, Anja

    2010-01-01

    Da bi se posameznik podal na podjetniško pot mora zaznati poslovno priložnost, hkrati pa mora imeti tudi ustrezno znanje oziroma sposobnosti. Odločitev za podjetništvo je vedno osebna odločitev. Posameznik se mora sam odločiti ali bo deloval kot podjetnik, ali pa se bo ukvarjal s čim drugim. Koroška regija je ena izmed najstarejših slovenskih industrijskih regij. Prevladujejo predelovalne dejavnosti (proizvodnja kovin in kovinskih izdelkov, proizvodnja iz gume in plastike ter proizvodnja ...

  16. Kan Kaşanmak Deyimi Üzerine On The Idiom Kan Kaşanmak

    Directory of Open Access Journals (Sweden)

    Yaşar ŞİMŞEK

    2013-03-01

    Full Text Available Mankind chose to tell his own feeling and thoughts with stereotyped words by using the expression facilities of his vernacular. The meaning of stereotyped words form as community's mutual thought's product by switching of the word or phrase's first meaning via simile. Idioms have a crucial place in regard to show the expression facilities in stereotyped words. That's why, the detection of entitiy in a language have an importance. In this essay, it will be dwelled on the idiom "kan kaşanmak"which is forgotten in these days, on the other hand; is mentioned oftenin Old Anatolian Turkish texts. The essay is composed of two parts. Inthe first part; the word kaşanmak's usage which is used in the meaningof "to urinate" in Uighur Turkish, Karakhanid Turkish, ChagataiTurkish, Qipchaq Turkish and Old Anatolian Turkish since Old Turkishperiod and today exists in Anatolian and Azerbaijan dialects, is going tobe tried to be shown with examples now that it forms a basis for "kankaşanmak" idiom.In the second part of the study, it will be dwelled on the idiom kankaşanmak's meaning transformation which is idiomatic form of theword kaşanmak, starting with the first meaning of it. The first meaningof the idiom kan kaşanmak means "to urinate blood, but later itbecomes a idiom by meaning transformation; in the meaning of"frighten to death, be scared as piss oneself, be scared as peeing bloodand this is going to be shown with examples. The study is going to befinished with showing the idiom's first meaning which is used in today'sAnatolian dialects usage " using an animal to carry load and animal'speeing blood because of the heavy burden" in the close meaning it isused for people too. İnsanoğlu, konuştuğu dilin ifade olanaklarını kullanarak, kendisine has duygu ve düşünceleri kalıplaşmış sözlerle anlatma yoluna gitmiştir. Kalıplaşmış sözlerin anlamı, sözcüğün ya da sözcük grubunun ilk anlamından mecaz yolu ile geçiş yaparak halk

  17. Review: Bilirubin pKa studies; new models and theories indicate high pKa values in water, dimethylformamide and DMSO

    Directory of Open Access Journals (Sweden)

    Ostrow J

    2010-03-01

    Full Text Available Abstract Background Correct aqueous pKa values of unconjugated bilirubin (UCB, a poorly-soluble, unstable substance, are essential for understanding its functions. Our prior solvent partition studies, of unlabeled and [14C] UCB, indicated pKa values above 8.0. These high values were attributed to effects of internal H-bonding in UCB. Many earlier and subsequent studies have reported lower pKa values, some even below 5.0, which are often used to describe the behavior of UCB. We here review 18 published studies that assessed aqueous pKa values of UCB, critically evaluating their methodologies in relation to essential preconditions for valid pKa measurements (short-duration experiments with purified UCB below saturation and accounting for self-association of UCB. Results These re-assessments identified major deficiencies that invalidate the results of all but our partition studies. New theoretical modeling of UCB titrations shows remarkable, unexpected effects of self-association, yielding falsely low pKa estimates, and provides some rationalization of the titration anomalies. The titration behavior reported for a soluble thioether conjugate of UCB at high aqueous concentrations is shown to be highly anomalous. Theoretical re-interpretations of data in DMSO and dimethylformamide show that those indirectly-derived aqueous pKa values are unacceptable, and indicate new, high average pKa values for UCB in non-aqueous media (>11 in DMSO and, probably, >10 in dimethylformamide. Conclusions No reliable aqueous pKa values of UCB are available for comparison with our partition-derived results. A companion paper shows that only the high pKa values can explain the pH-dependence of UCB binding to phospholipids, cyclodextrins, and alkyl-glycoside and bile salt micelles.

  18. Rationalization of the pKa values of alcohols and thiols using atomic charge descriptors and its application to the prediction of amino acid pKa's.

    Science.gov (United States)

    Ugur, Ilke; Marion, Antoine; Parant, Stéphane; Jensen, Jan H; Monard, Gerald

    2014-08-25

    In a first step toward the development of an efficient and accurate protocol to estimate amino acids' pKa's in proteins, we present in this work how to reproduce the pKa's of alcohol and thiol based residues (namely tyrosine, serine, and cysteine) in aqueous solution from the knowledge of the experimental pKa's of phenols, alcohols, and thiols. Our protocol is based on the linear relationship between computed atomic charges of the anionic form of the molecules (being either phenolates, alkoxides, or thiolates) and their respective experimental pKa values. It is tested with different environment approaches (gas phase or continuum solvent-based approaches), with five distinct atomic charge models (Mulliken, Löwdin, NPA, Merz-Kollman, and CHelpG), and with nine different DFT functionals combined with 16 different basis sets. Moreover, the capability of semiempirical methods (AM1, RM1, PM3, and PM6) to also predict pKa's of thiols, phenols, and alcohols is analyzed. From our benchmarks, the best combination to reproduce experimental pKa's is to compute NPA atomic charge using the CPCM model at the B3LYP/3-21G and M062X/6-311G levels for alcohols (R(2) = 0.995) and thiols (R(2) = 0.986), respectively. The applicability of the suggested protocol is tested with tyrosine and cysteine amino acids, and precise pKa predictions are obtained. The stability of the amino acid pKa's with respect to geometrical changes is also tested by MM-MD and DFT-MD calculations. Considering its strong accuracy and its high computational efficiency, these pKa prediction calculations using atomic charges indicate a promising method for predicting amino acids' pKa in a protein environment.

  19. Ka-Band, Multi-Gigabit-Per-Second Transceiver

    Science.gov (United States)

    Simons, Rainee N.; Wintucky, Edwin G.; Smith, Francis J.; Harris, Johnny M.; Landon, David G.; Haddadin, Osama S.; McIntire, William K.; Sun, June Y.

    2011-01-01

    A document discusses a multi-Gigabit-per-second, Ka-band transceiver with a software-defined modem (SDM) capable of digitally encoding/decoding data and compensating for linear and nonlinear distortions in the end-to-end system, including the traveling-wave tube amplifier (TWTA). This innovation can increase data rates of space-to-ground communication links, and has potential application to NASA s future spacebased Earth observation system. The SDM incorporates an extended version of the industry-standard DVB-S2, and LDPC rate 9/10 FEC codec. The SDM supports a suite of waveforms, including QPSK, 8-PSK, 16-APSK, 32- APSK, 64-APSK, and 128-QAM. The Ka-band and TWTA deliver an output power on the order of 200 W with efficiency greater than 60%, and a passband of at least 3 GHz. The modem and the TWTA together enable a data rate of 20 Gbps with a low bit error rate (BER). The payload data rates for spacecraft in NASA s integrated space communications network can be increased by an order of magnitude (>10 ) over current state-of-practice. This innovation enhances the data rate by using bandwidth-efficient modulation techniques, which transmit a higher number of bits per Hertz of bandwidth than the currently used quadrature phase shift keying (QPSK) waveforms.

  20. Full Ka Band Waveguide-to-Microstrip Inline Transition Design

    Science.gov (United States)

    Li, Jianxing; Li, Lei; Qiao, Yu; Chen, Juan; Chen, Jianzhong; Zhang, Anxue

    2018-05-01

    In this paper, a compact and broadband inline waveguide-to-microstrip transition is proposed to cover the full Ka band. The transition can be segmented from the electric point of view into three building blocks, comprising a microstrip line to rectangular coaxial line, a wedged rectangular coaxial line to ridged waveguide, and a final tapered ridged waveguide impedance transformer to standard waveguide. Both good electrical performance and simple modular assembly without any soldering have been simultaneously obtained. The validation of the design concept has been conducted by numerical simulations and experimental measurements. The experimental results of a fabricated back-to-back transition prototype coincide with the simulated results. It shows that the proposed transition achieves good return loss of lower than 15.5 dB and low insertion loss with a fluctuation between 0.23 to 0.60 dB across the entire Ka band. Details of design considerations and operation mechanism as well as simulation and measurement results are presented.

  1. Gerenciamento de resíduos odontológicos no serviço público

    Directory of Open Access Journals (Sweden)

    Lídia Regina da Costa Hidalgo

    Full Text Available OBJETIVO: Verificar o processo de gerenciamento dos resíduos odontológicos do serviço público de saúde em 11 municípios brasileiros. MATERIAL E MÉTODO: Uma única pesquisadora realizou as visitas e as observações foram anotadas em um roteiro previamente elaborado e testado. RESULTADO: Foram visitadas 50 unidades de saúde, sendo que nenhuma apresentou cópia do plano de gerenciamento de resíduos. Do total de estabelecimentos, 62% realizavam a correta segregação dos resíduos no momento da sua geração. A presença de recipientes adequados a cada tipo de resíduo gerado no consultório odontológico foi observada em 74% dos estabelecimentos e, destes, 94% apresentavam capacidade adequada ao tipo de resíduo gerado. A identificação do tipo de resíduo nas embalagens plásticas bem como anotações identificando o estabelecimento gerador dos resíduos foram encontradas em 8% e 6%, respectivamente. Somente 21% dos estabelecimentos apresentavam locais apropriados, de acordo com as normas vigentes, para o armazenamento dos resíduos até que fosse feita a coleta externa. CONCLUSÃO: Constatou-se na presente pesquisa que a rotina adotada pela rede pública de saúde bucal, no que tange ao gerenciamento de resíduos de saúde, apresentou falhas.

  2. pKa predictions for proteins, RNAs, and DNAs with the Gaussian dielectric function using DelPhi pKa.

    Science.gov (United States)

    Wang, Lin; Li, Lin; Alexov, Emil

    2015-12-01

    We developed a Poisson-Boltzmann based approach to calculate the pKa values of protein ionizable residues (Glu, Asp, His, Lys and Arg), nucleotides of RNA and single stranded DNA. Two novel features were utilized: the dielectric properties of the macromolecules and water phase were modeled via the smooth Gaussian-based dielectric function in DelPhi and the corresponding electrostatic energies were calculated without defining the molecular surface. We tested the algorithm by calculating pKa values for more than 300 residues from 32 proteins from the PPD dataset and achieved an overall RMSD of 0.77. Particularly, the RMSD of 0.55 was achieved for surface residues, while the RMSD of 1.1 for buried residues. The approach was also found capable of capturing the large pKa shifts of various single point mutations in staphylococcal nuclease (SNase) from pKa-cooperative dataset, resulting in an overall RMSD of 1.6 for this set of pKa's. Investigations showed that predictions for most of buried mutant residues of SNase could be improved by using higher dielectric constant values. Furthermore, an option to generate different hydrogen positions also improves pKa predictions for buried carboxyl residues. Finally, the pKa calculations on two RNAs demonstrated the capability of this approach for other types of biomolecules. © 2015 Wiley Periodicals, Inc.

  3. Avaliação da anatomia de molares decíduos por meio de microtomografia computadorizada

    OpenAIRE

    Ana Caroline Fumes

    2013-01-01

    O conhecimento prévio da anatomia interna e externa dos dentes decíduos é de fundamental importância para o sucesso do tratamento endodôntico. O objetivo do presente estudo foi analisar a morfologia das raízes e dos canais radiculares de molares decíduos superiores e inferiores, por meio de microtomografia computadorizada (micro-CT). Foram usados 40 molares decíduos, divididos em quatro grupos, sendo 10 primeiros molares inferiores, 10 segundos molares inferiores, 10 primeiros molares superio...

  4. Malama I Ka `Aina: Fostering the Culture-Science connection

    Science.gov (United States)

    Bruno, B.; Chinn, P.

    2005-12-01

    The Malama I Ka `Aina Project (Caring for the land, or sustainability) aims to improve and expand the education of Hawai`i's children by developing and disseminating standards-based, culturally relevant science curricular materials based on an understanding and appreciation of the ways in which traditional Hawaiians interacted with their environment for sustainability. Key concepts include the role of water and the ahupua`a (traditional Hawaiian system of land management), and a culture-based sense of place that includes knowledge of and connection to the land. Elementary, middle, high school and University of Hawai`i teachers work together to develop and implement curricula that are especially relevant to a particular school's science program and issues, e.g., invasive species, students, community and/or geographical location. Participants (typically a mix of teachers, education majors and science majors) enroll in Malama I Ka `Aina, a three-credit course offered through the University of Hawai`i`s Dept. of Curriculum Studies and applicable toward a Bachelor's or Master's degree. This course (team taught by scientists, cultural experts and educational professionals) enables participants to: (1) Study Hawai`i`s unique geology, geography and environmental issues in the context of Hawaiian culture and post Western contact; (2) Use course knowledge to develop, teach and assess Hawaii-oriented, project-based, inquiry activities that address the Hawaii Science Content Standards; (3) Gain an appreciation for the scientific method, and the curiosity that drives science (4) Use educational technology such as PowerPoint, graphing packages and web authoring software to develop electronic resources for educational activities. A sample of the lessons developed by course participants can be found on http://malama.hawaii.edu/schools/index2.html. This project is based at the University of Hawai`i College of Education and funded by an award to P. Chinn by the US Department of

  5. Potentiometric pKa Determination of Piroxicam and Tenoxicam in Acetonitrile-Water Binary Mixtures

    OpenAIRE

    Çubuk Demiralay, Ebru; Yılmaz, Hülya

    2012-01-01

    Abstract: Ionization constant (pKa) is one among the parameter to be estimated with accuracy, irrespective of solubility constraints. In the present study, acid-base behaviour of the piroxicam and tenoxicam was studied. By using the potentiometric method, pKa values of piroxicam and tenoxicam have been determined in different percentage of acetonitrile-water binary mixtures (acetonitrile content between 30 and 45% in volume). Aqueous pKa values of these compounds were calculated by mole fract...

  6. Snovanje in konstruiranje nadstreška za lahka gospodarska vozila

    OpenAIRE

    Čirić, Sebastijan

    2015-01-01

    Diplomska naloga opisuje primer snovanja in konstruiranja nadstreška za lahka gospodarska vozila. Naloga vsebuje statični preračun nadstreška sprogramom Scia Engineer 2011.1 in izdelavo modela nadstreška ter tehnično dokumentacijo v programu Pro Engineer 5.0. Rezultati statičnega preračuna so analizirane vrednosti povesa in napetosti.

  7. Highly Perturbed pKa Values in the Unfolded State of Hen Egg White Lysozyme

    OpenAIRE

    Bradley, John; O'Meara, Fergal; Farrell, Damien; Nielsen, Jens Erik

    2012-01-01

    The majority of pKa values in protein unfolded states are close to the amino acid model pKa values, thus reflecting the weak intramolecular interactions present in the unfolded ensemble of most proteins. We have carried out thermal denaturation measurements on the WT and eight mutants of HEWL from pH 1.5 to pH 11.0 to examine the unfolded state pKa values and the pH dependence of protein stability for this enzyme. The availability of accurate pKa values for the folded state of HEWL and separa...

  8. Franchisingkäsikirjan tuottaminen käytettyjen valokuvaustarvikkeiden verkkokaupalle

    OpenAIRE

    Heikkinen, Antti

    2015-01-01

    Tämän opinnäytetyön tarkoituksena oli luoda selkeä ja helppokäyttöinen franchisingkäsikirja Kameratori Oy:lle. Kameratori on vuonna 2010 perustettu käytettyyn valokuvauskalustoon keskittyvä verkkokauppa, joka myy Tampereen toimitiloista käsin kuntotarkistettua kuvauskalustoa Suomeen ja maailmalle. Franchisingkäsikirjaan on dokumentoitu Kameratori.fi-verkkosivuston käyttöön tarvittava ohjeistus. Käsikirja on yksi olennaisimmista dokumenteista franchisingantajan ja -ottajien...

  9. FIZIČKA AKTIVNOST I ŠEĆERNA BOLEST

    OpenAIRE

    BARETIĆ, MAJA

    2017-01-01

    Sve veća učestalost šećerne bolesti povezuje se s prihvaćanjem netradicionalnih načina prehrane i prakticiranjem „sjedilačkog načina života“. Liječenje šećerne bolesti sastoji se od promjene životnog stila što uključuje promjenu fizičke aktivnosti, tipa i učestalosti prehrane te uzimanje specifi čne terapije. Fizička aktivnost je dio temeljnog liječenja dijabetesa; ima dokazane koristi u smanjenju inzulinske rezistencije, poboljšanju glikemijske kontrole, lipidnog profi la, u normalizaciji tj...

  10. Miniaturized Ka-Band Dual-Channel Radar

    Science.gov (United States)

    Hoffman, James P.; Moussessian, Alina; Jenabi, Masud; Custodero, Brian

    2011-01-01

    Smaller (volume, mass, power) electronics for a Ka-band (36 GHz) radar interferometer were required. To reduce size and achieve better control over RFphase versus temperature, fully hybrid electronics were developed for the RF portion of the radar s two-channel receiver and single-channel transmitter. In this context, fully hybrid means that every active RF device was an open die, and all passives were directly attached to the subcarrier. Attachments were made using wire and ribbon bonding. In this way, every component, even small passives, was selected for the fabrication of the two radar receivers, and the devices were mounted relative to each other in order to make complementary components isothermal and to isolate other components from potential temperature gradients. This is critical for developing receivers that can track each other s phase over temperature, which is a key mission driver for obtaining ocean surface height. Fully hybrid, Ka-band (36 GHz) radar transmitter and dual-channel receiver were developed for spaceborne radar interferometry. The fully hybrid fabrication enables control over every aspect of the component selection, placement, and connection. Since the two receiver channels must track each other to better than 100 millidegrees of RF phase over several minutes, the hardware in the two receivers must be "identical," routed the same (same line lengths), and as isothermal as possible. This level of design freedom is not possible with packaged components, which include many internal passive, unknown internal connection lengths/types, and often a single orientation of inputs and outputs.

  11. SUSTENTABILIDADE NA DESTINAÇÃO DE RESÍDUOS DA CONSTRUÇÃO CIVIL

    OpenAIRE

    João Batista Christófori; Patrycia Pansini de Oliveira; Larícia Olaria Emerick Silva

    2017-01-01

    Reforçando a necessidade e a importância de cada país sobre a maneira pela qual governos, empresas, organizações e os demais setores da sociedade poderiam cooperar no estudo e nas soluções socioambientais, a Agenda 21, um documento fundamental firmado na Rio-92. A reciclagem, em diversos estudos é citada como uma alternativa para a redução da quantidade de resíduos dispostos nos aterros, além de ser uma proposta sustentável para a destinação dos resíduos de construção civil. Assim, este traba...

  12. A Importância da Criatividade no Desenvolvimento do Indivíduo

    Directory of Open Access Journals (Sweden)

    Débora Martins

    2012-09-01

    Full Text Available Construído com o propósito de enfatizar a importância da criatividade para o desenvolvimento do indivíduo, este trabalho reflete sobre os diversos ambientes criativos (casa, escola e trabalho e sobre as influências dos seus intervenientes. Assim, é abordada neste estudo a criatividade, enquanto definição e conceito, o papel da família e da sua influência no percurso educativo e o ambiente criativo na escola e no mundo profissional. Posteriormente são apresentados estudos sobre a importância da criatividade na educação, e sobre o papel das disciplinas artísticas para o desenvolvimento criativo do indivíduo. Por último, são apresentados alguns casos de sucesso e empreendedorismo, que fundamentam a importância deste tema para o percurso profissional.

  13. O INDIVÍDUO: A ALMA DAS ORGANIZAÇÕES

    Directory of Open Access Journals (Sweden)

    Valéria Deluca Soares

    2016-11-01

    Full Text Available O presente artigo tem como proposta fazer uma análise, com base em alguns pressupostos, sobre organizações, cultura e comunicação, com ênfase no indivíduo organizacional. Para tal, com o uso de pesquisa bibliográfica, utilizou-se, como referência, os modelos e/ou teorias dos autores Clegg e Hardy (1999, Hall (1994, Enriquez (2000, Freitas, (1991, 1999, Losicer (1995, Volnovich (1995, Srour (1998, Schein (2001, Trompenaars (1994, Fleury (1989, Motta (1996, Aktouf (1993, Kreps (1995, Goldhaber (1991, Costa (1995, Kunsch (1999, Lindeborg (s.d. e Lite (1997 e Chanlat (1996. Tal discussão busca evidenciar a pertinente necessidade de ampliação das discussões em torno do sujeito organizacional. Palavras-chave: Organização, Indivíduos, Comunicação, Cultura.

  14. The iDuo Bi-compartmental Knee Replacement: Our Early Experience.

    Directory of Open Access Journals (Sweden)

    Peter Jemmett

    2016-12-01

    Our early results suggest that the iDuo knee is a good option for those with isolated bi-compartmental disease and outcome scores are comparable with those reported for the BKA. This bi-compartmental design may bridge the gap between the uni-compartmental and total knee replacement. The choice between monolithic or modular designs remains in debate. We will continue to use this prosthesis for a carefully selected group of patients.

  15. A DANÇA E OS INDIVÍDUOS PORTADORES DE LESÃO MEDULAR

    Directory of Open Access Journals (Sweden)

    Arabel Issa Vieira

    1997-01-01

    Full Text Available A inclusão de indivíduos portadores de lesão medular no universo artístico da dança tornou-se possível a partir dos paradigmas emergentes da modernidade e pós-modernidade. Neste processo, fica evidente o aspecto universal da dança e a sua importância para o desenvolvimento do ser humano.

  16. Resíduos de aves e suínos: Potencialidades

    Directory of Open Access Journals (Sweden)

    Tiago Luan Hachmann

    2014-05-01

    Full Text Available O crescimento intenso da população mundial aumenta a demanda por alimentos. As carnes de frango e de suíno são as fontes mais exploradas de proteína na alimentação humana. Porém, com os métodos intensivos de produção, esses sistemas tem gerado insatisfação quanto ao aspecto ambiental e tem sido questionados quanto à sua sustentabilidade. A disposição inadequada dos resíduos gerados nos criatórios de suínos e aves afeta diretamente a qualidade do meio ambiente e a saúde pública. Assim deve-se buscar alternativas para minimizar os impactos causados ao meio, melhorando o aproveitamento e destinação desses resíduos. A aplicação desses resíduos nas áreas de produção agrícola é favorável à, tendo em vista que são uma fonte de nutrientes de grande demanda pelas culturas. Além disso é uma forma sustentável para destinação dos resíduos, já que promove seu reaproveitamento de forma a não poluir o ambiente e com alto retorno econômico. Dessa forma é possível aliar preservação ambiental com progresso econômico, promovendo uma produção sustentável.

  17. LOGÍSTICA REVERSA DE RESÍDUOS ELETROELETRÔNICOS EM FRUTAL-MG

    Directory of Open Access Journals (Sweden)

    Adriano Reis de Paula e Silva

    2015-12-01

    Full Text Available O conceito de logística reversa ganha cada vez mais importância como uma ferramenta empresarial, para que as organizações gerenciem todo o ciclo de vida de seus produtos, atendendo a exigências legais, governamentais e dos consumidores. Este artigo tem como objetivo averiguar a compreensão do conceito de logística reversa entre os empresários do comércio varejista de informática em Frutal-MG, bem como a visão e a atuação governamental para o gerenciamento dos resíduos eletroeletrônicos. A partir das entrevistas e, sobretudo dos trabalhos de campo conclui-se que há a ausência de infraestrutura logística entre as empresas do setor e também no âmbito do poder público. Em relação à destinação final dos resíduos, uma parte vai para o mercado secundário, portanto é (reaproveitada. Contudo, aqueles resíduos que não tem (reaproveitamento, geralmente, são descartados no lixo comum. Contudo, novas perspectivas surgem, uma vez que a Prefeitura Municipal de Frutal, em parceria com a Universidade do Estado de Minas Gerais e a Fundação Unesco-HidroEX, está implantando o posto de recebimento para tratamentos e destinação correta dos resíduos de informática.

  18. Keskkonnaraha kolis taotlejate juurde / Andres Pulver

    Index Scriptorium Estoniae

    Pulver, Andres, 1965-

    2005-01-01

    Keskkonnainvesteeringute keskus (KIK) avas maakondlikud esindused, mis abistavad projektide arendajaid keskkonnaprojektide toetuste taotlemisel, projektide elluviimisel ning kontrollivad toetuste sihipärast kasutamist. Lisa: KIK

  19. Uso de resíduos de gesso como corretivo em solo salino-sódico

    OpenAIRE

    Santos, Paulo Medeiros dos; Rolim, Mario Monteiro; Duarte, Anamaria Sousa; Barros, Maria de Fátima Cavalcanti; Silva, Ênio Farias de França e

    2014-01-01

    Um dos grandes problemas enfrentados pelo setor da construção civil é a destinação final de resíduos, principalmente os resíduos de gesso, que têm sua aptidão para reciclagem restringida. No entanto, tais resíduos possuem altos teores de cálcio, em sua composição, podendo ser uma alternativa ao uso de gesso de jazida, na recuperação de solos salino-sódicos. Esta pesquisa objetivou avaliar a eficiência do uso de resíduos de gesso provenientes da construção civil, em relação ao gesso de jazida,...

  20. RESÍDUOS COMPOSTADOS COMO SUBSTRATO PARA PRODUÇÃO DE PETUNIA X HYBRIDA

    Directory of Open Access Journals (Sweden)

    Cesar Augusto Zanello

    2016-09-01

    Full Text Available A transformação de resíduo em tecnologia deve ser uma prioridade atual no setor agrícola, diminuindo o descarte inadequado e recuperando parte daquilo que é produzido e que pode retornar como nutriente as plantas. O presente trabalho teve por objetivo buscar uma solução viável de uso de resíduos vegetais como a poda de grama, o bagaço de cana e o esterco bovino como substrato para o cultivo de plantas. Os resíduos utilizados foram compostados, e utilizados como substratos para a produção de petúnia, uma espécie ornamental. Como controle foram utilizados substratos comerciais a base de pó de coco (PC e de casca de pinus (CP. Após as mudas atingirem o ponto de transplantio, essas foram transplantadas para vasos plásticos com o mesmo substrato utilizado na produção da muda, mantendo os tratamentos. Os melhores substratos obtidos para o cultivo de petúnias em vasos foram o PG e CP, considerando ambos os aspectos dos desenvolvimentos vegetativo e reprodutivo. Esses resultados mostram o alto potencial de uso da poda de grama como substrato para a horticultura, sendo uma alternativa principalmente em sistemas sustentáveis de produção, por não necessitarem de fertilização complementar durante o cultivo.

  1. New insights on water level variability for Lake Turkana for the past 15 ka and at 150 ka from relict beaches

    Science.gov (United States)

    Forman, S. L.; Wright, D.

    2015-12-01

    Relict beaches adjacent to Lake Turkana provide a record of water level variability for the Late Quaternary. This study focused on deciphering the geomorphology, sedimentology, stratigraphy and 14C chronology of strand plain sequences in the Kalokol and Lothagam areas. Nine >30 m oscillations in water level were documented between ca. 15 and 4 ka. The earliest oscillation between ca. 14.5 and 13 ka is not well constrained with water level to at least 70 m above the present surface and subsequently fell to at least 50 m. Lake level increased to ~ 90 m between ca. 11.2 and 10.4 ka, post Younger Dryas cooling. Water level fell by >30 m by 10.2 ka, with another potential rise at ca. 8.5 ka to >70 m above current level. Lake level regressed by > 40 m at 8.2 ka coincident with cooling in the equatorial Eastern Atlantic Ocean. Two major >70 m lake level oscillations centered at 6.6 and 5.2 ka may reflect enhanced convection with warmer sea surface temperatures in the Western Indian Ocean. The end of the African Humid Period occurred from ca. 8.0 to 4.5 ka and was characterized by variable lake level (± > 40 m), rather than one monotonic fall in water level. This lake level variability reflects a complex response to variations in the extent and intensity of the East and West African Monsoons near geographic and topographic limits within the catchment of Lake Turkana. Also, for this closed lake basin excess and deficits in water input are amplified with a cascading lake effect in the East Rift Valley and through the Chew Bahir Basin. The final regression from a high stand of > 90 m began at. 5.2 ka and water level was below 20 m by 4.5 ka; and for the remainder of the Holocene. This sustained low stand is associated with weakening of the West African Monsoon, a shift of the mean position of Congo Air Boundary west of the Lake Turkana catchment and with meter-scale variability in lake level linked to Walker circulation across the Indian Ocean. A surprising observation is

  2. Increasing Diversity in STEM through Ka Hikina O Ka Lā Summer Bridge Program for Native Hawaiian Students

    Science.gov (United States)

    Coopersmith, A.; Cie, D. K.; Calder, S.; Naho`olewa, D.; Rai, B.

    2014-12-01

    The Advanced Technology Solar Telescope (ATST) Mitigation Initiative and the Kahikina O Ka Lā Program are NSF-funded projects at the University of Hawai`i Maui College. These projects offer instruction and activities intended to increase diversity in STEM careers. Ke Alahaka, the 2014 summer bridge program, was offered to Native Hawaiian high-school students who indicated an interest in STEM areas. Content workshops were offered in Marine Science, Physics, Biotechnology, and Computer Science and Engineering as well as a Hawaiian Studies course designed to provide a cultural context for the STEM instruction. Focus groups and other program assessments indicate that 50% of the students attending the workshops intend to pursue a STEM major during their undergraduate studies.

  3. Mobilidade de metais pesados em solo tratado com resíduo siderúrgico ácido

    Directory of Open Access Journals (Sweden)

    N. M. B. Amaral Sobrinho

    1998-06-01

    Full Text Available Amostras do horizonte Bt de um Podzólico Vermelho-Amarelo (PV, predominante no aterro-piloto de resíduos industriais (ARSI da Companhia Siderúrgica Nacional (CSN, foram acondicionadas, em 1992, em colunas de vidro com 5,4 cm de diâmetro e 37 cm de altura. Sobre essas amostras de solo foram colocadas amostras de um resíduo ácido da CSN na proporção solo-resíduo de 4:1 (conforme a concepção básica do projeto do ARSI. Tal sistema resíduo-solo foi lixiviado com 50 volumes-poro de água deionizada, com pH 4,5, com o objetivo de avaliar a movimentação de Cr, Mn, Ni, Cu, Zn, Cd e Pb nas colunas. Depois da lixiviação, removeu-se o resíduo do topo das colunas, e seccionaram-se as amostras de solo em 4 partes iguais. Os metais pesados das amostras do resíduo e do solo foram extraídos seqüencialmente. 0 Pb, Cu e Cr mobilizados do resíduo ficaram retidos nos primeiros 5 cm da coluna de solo. 0 Zn, Mn, Ni e Cd tiveram aumento da concentração em profundidade. Nos efluentes das colunas com o resíduo, foram observadas concentrações de Mn e Ni bem superiores aos padrões permitidos pela Fundação Estadual de Engenharia do Meio Ambiente (FEEMA, 1985.

  4. Ravimiturg peaks ka sel aastal jõudsalt kasvama / Violetta Riidas

    Index Scriptorium Estoniae

    Riidas, Violetta

    2008-01-01

    Ilmunud ka: Äripäev 30. apr. lk. 16. Eelmise aasta ravimituru kasv jätkub tõenäoliselt ka sel aastal, kuna negatiivne riigieelarve ravimihüvitisi ei kärbi. Vt. samas: Võrdlus: Ravimituru jaotus haiglaapteekide ning teiste asutuste vahel peamiste ATC rühmade lõikes, 2007

  5. Potentiometric determination of acid dissociation constants (pKa) for human and veterinary antibiotics.

    Science.gov (United States)

    Qiang, Zhimin; Adams, Craig

    2004-07-01

    This work determined the acid dissociation constants (pKa) of 26 common human and veterinary antibiotics by potentiometric titration. Selected antibiotics consisted of sulfonamides, macrolides, tetracyclines, fluoroquinolones, and other miscellaneous antibiotics. After validation of analysis methods using phosphoric acid as a model compound, a second-derivative (delta2pH/deltaV2) method was primarily applied to determining pKa's from titration curves for most antibiotics due to its convenience and accuracy. For tetracyclines, however, a least-square non-linear regression method was developed to determine their pKa's because the second-derivative method cannot well distinguish the pKa,2 and pKa,3 of tetracyclines. Results indicate that the pKa values are approximately 2 and 5-7.5 for sulfonamides; 7.5-9 for macrolides; 3-4, 7-8 and 9-10 for tetracyclines; 3-4, 6, 7.5-9 and 10-11 for fluoroquinolones; while compound-specific for other miscellaneous antibiotics. The moieties corresponding to specific pKa's were identified based on chemical structures of antibiotics. In addition, the pKa's available in literature determined by various techniques are compiled in comparison with the values of this work. These results are expected to essentially facilitate the research on occurrence, fate and effects, analysis methods development, and control of antibiotics in various treatment operations.

  6. Kõik, mis valesti sai minna, see on ka valesti läinud / George Soros

    Index Scriptorium Estoniae

    Soros, George, 1930-

    2008-01-01

    Ilmunud ka: Molodjozh Estonii : Biznes Sreda, Delovõje Vedomosti 6. veebr. lk. 10. Praegune finantskriis, mille käivitas kinnisvaramulli lõhkemine USA-s, tähistab ka dollari kui rahvusvahelisel reservvaluutal baseeruva laenuandmise laienemise ajastu lõppu

  7. Development of a thermally switched superconducting rectifier for 100 kA

    NARCIS (Netherlands)

    Mulder, G.B.J.; Mulder, G.B.J.; ten Kate, Herman H.J.; Krooshoop, Hendrikus J.G.; van de Klundert, L.J.M.; van de Klundert, L.J.M.

    1991-01-01

    A full-wave superconducting rectifier for 100 kA has been developed. Typical design values of this device are: a secondary current of 100 kA, a primary amplitude of 20 A, an operating frequency of 0.5 Hz, and an average power on the order of 100 W. The rectification is achieved by means of thermally

  8. 18 Ka BP records of climatic changes, Bay of Bengal: Isotopic and sedimentological evidences

    Digital Repository Service at National Institute of Oceanography (India)

    Chauhan, O.S.; Suneethi, J.

    are also identified at 10.3 and 11.5 Ka BP. The later event matches well with that of the ‘Younger Dryas’ event of world climate models. The beginning of the Holocene is marked by lighter d18O values (at around 9.5 Ka BP), which has been interpreted...

  9. Determination of lactic acid bacteria in Kaºar cheese and ...

    African Journals Online (AJOL)

    Lactic acid bacteria (LAB) arise in Kaşar cheese, an artisanal pasta filata cheese produced in Turkey from raw milk without starter addition or pasteurized milk with starter culture. In this study, 13 samples of Kaşar cheese that were produced from raw milk were used as reference materials. LAB were characterized by using ...

  10. Ka Hana `Imi Na`auao: A Science Curriculum Project

    Science.gov (United States)

    Napeahi, K.; Roberts, K. D.; Galloway, L. M.; Stodden, R. A.; Akuna, J.; Bruno, B.

    2005-12-01

    In antiquity, the first people to step foot on what are now known as the Hawaiian islands skillfully traversed the Pacific Ocean using celestial navigation and learned observations of scientific phenomena. Long before the Western world ventured beyond the horizon, Hawaiians had invented the chronometer, built aqueduct systems (awai) that continue to amaze modern engineers, and had preventive health systems as well as a comprehensive knowledge of medicinal plants (including antivirals) which only now are working their way through trials for use in modern pharmacopia. Yet, today, Native Hawaiians are severely underrepresented in science-related fields, reflecting (in part) a failure of the Western educational system to nurture the potential of these resourceful students, particularly the many "at-risk" students who are presently over-represented in special education. A curriculum which draws from and incorporates traditional Hawaiian values and knowledge is needed to reinforce links to the inquiry process which nurtured creative thinking during the renaissance of Polynesian history. The primary goal of the Ka Hana `Imi Na`auao Project (translation: `science` or `work in which you seek enlightenment, knowledge or wisdom`) is to increase the number of Native Hawaiian adults in science-related postsecondary education and employment fields. Working closely with Native Hawaiian cultural experts and our high school partners, we will develop and implement a culturally responsive 11th and 12th grade high school science curriculum, infused with math, literacy and technology readiness skills. Software and assistive technology will be used to adapt instruction to individual learners` reading levels, specific disabilities and learning styles. To ease the transition from secondary to post-secondary education, selected grade 12 students will participate in planned project activities that link high school experiences with college science-related programs of study. Ka Hana `Imi Na

  11. Paleointensities on 8 ka obsidian from Mayor Island, New Zealand

    Directory of Open Access Journals (Sweden)

    A. Ferk

    2011-11-01

    Full Text Available The 8 ka BP (6050 BCE pantelleritic obsidian flow on Mayor Island, Bay of Plenty, New Zealand, has been investigated using 30 samples from two sites. Due to a very high paramagnetic/ferromagnetic ratio, it was not possible to determine the remanence carriers. This is despite the fact that the samples were studied intensively at low, room, and high temperatures. We infer that a stable remanence within the samples is carried by single- or close to single-domain particles. Experiments to determine the anisotropy of thermoremanence tensor and the dependency on cooling rate were hampered due to alteration resulting from the repeated heating of the samples to temperatures just below the glass transition. Nonetheless, a well-defined mean paleointensity of 57.0 ± 1.0 μT, based on individual high quality paleointensity determinations, was obtained. This field value compares very well to a paleointensity of 58.1 ± 2.9 μT, which Tanaka et al. (2009 obtained for 5500 BCE at a site 100 km distant. Agreement with geomagnetic field models, however, is poor. Thus, gathering more high-quality paleointensity data for the Pacific region and for the southern hemisphere in general to better constrain global field models is very important.

  12. Design of Ka-band antipodal finline mixer and detector

    International Nuclear Information System (INIS)

    Yao Changfei; Xu Jinping; Chen Mo

    2009-01-01

    This paper mainly discusses the analysis and design of a finline single-ended mixer and detector. In the circuit, for the purpose of eliminating high-order resonant modes and improving transition loss, metallic via holes are implemented along the mounting edge of the substrate embedded in the split-block of the WG-finline-microstrip transition. Meanwhile, a Ka band slow-wave and bandstop filter, which represents a reactive termination, is designed for the utilization of idle frequencies and operation frequencies energy. Full-wave analysis is carried out to optimize the input matching network of the mixer and the detector circuit using lumped elements to model the nonlinear diode. The exported S-matrix of the optimized circuit is used for conversion loss and voltage sensitivity analysis. The lowest measured conversion loss is 3.52 dB at 32.2 GHz; the conversion loss is flat and less than 5.68 dB in the frequency band of 29-34 GHz. The highest measured zero-bias voltage sensitivity is 1450 mV/mW at 38.6 GHz, and the sensitivity is better than 1000 mV/mW in the frequency band of 38-40 GHz.

  13. Rain Fade Compensation for Ka-Band Communications Satellites

    Science.gov (United States)

    Mitchell, W. Carl; Nguyen, Lan; Dissanayake, Asoka; Markey, Brian; Le, Anh

    1997-01-01

    This report provides a review and evaluation of rain fade measurement and compensation techniques for Ka-band satellite systems. This report includes a description of and cost estimates for performing three rain fade measurement and compensation experiments. The first experiment deals with rain fade measurement techniques while the second one covers the rain fade compensation techniques. The third experiment addresses a feedback flow control technique for the ABR service (for ATM-based traffic). The following conclusions were observed in this report; a sufficient system signal margin should be allocated for all carriers in a network, that is a fixed clear-sky margin should be typically in the range of 4-5 dB and should be more like 15 dB in the up link for moderate and heavy rain zones; to obtain a higher system margin it is desirable to combine the uplink power control technique with the technique that implements the source information rate and FEC code rate changes resulting in a 4-5 dB increase in the dynamic part of the system margin. The experiments would assess the feasibility of the fade measurements and compensation techniques, and ABR feedback control technique.

  14. Studying NASA's Transition to Ka-Band Communications for Low Earth Orbit

    Science.gov (United States)

    Chelmins, David T.; Reinhart, Richard C.; Mortensen, Dale; Welch, Bryan; Downey, Joseph; Evans, Michael

    2014-01-01

    As the S-band spectrum becomes crowded, future space missions will need to consider moving command and telemetry services to Ka-band. NASA's Space Communications and Navigation (SCaN) Testbed provides a software-defined radio (SDR) platform that is capable of supporting investigation of this service transition. The testbed contains two S-band SDRs and one Ka-band SDR. Over the past year, SCaN Testbed has demonstrated Ka-band communications capabilities with NASAs Tracking and Data Relay Satellite System (TDRSS) using both open- and closed-loop antenna tracking profiles. A number of technical areas need to be addressed for successful transition to Ka-band. The smaller antenna beamwidth at Ka-band increases the criticality of antenna pointing, necessitating closed loop tracking algorithms and new techniques for received power estimation. Additionally, the antenna pointing routines require enhanced knowledge of spacecraft position and attitude for initial acquisition, versus an S-band antenna. Ka-band provides a number of technical advantages for bulk data transfer. Unlike at S-band, a larger bandwidth may be available for space missions, allowing increased data rates. The potential for high rate data transfer can also be extended for direct-to-ground links through use of variable or adaptive coding and modulation. Specific examples of Ka-band research from SCaN Testbeds first year of operation will be cited, such as communications link performance with TDRSS, and the effects of truss flexure on antenna pointing.

  15. The Potential for a Ka-band (32 GHz) Worldwide VLBI Network

    Science.gov (United States)

    Jacobs, C. S.; Bach, U.; Colomer, F.; Garcia-Miro, C.; Gomez-Gonzalez, J.; Gulyaev, S.; Horiuchi, S.; Ichikawa, R.; Kraus, A.; Kronschnabl, G.; hide

    2012-01-01

    Ka-band (32 GHz, 9mm) Very Long Baseline Interferometric (VLBI) networking has now begun and has tremendous potential for expansion over the next few years. Ka-band VLBI astrometry from NASA's Deep Space Network has already developed a catalog of 470 observable sources with highly accurate positions. Now, several antennas worldwide are planning or are considering adding Ka-band VLBI capability. Thus, there is now an opportunity to create a worldwide Ka-band network with potential for high resolution imaging and astrometry. With baselines approaching a Giga-lambda, a Ka-band network would be able to probe source structure at the nano-radian (200 as) level ( 100X better than Hubble) and thus gain insight into the astrophysics of the most compact regions of emission in active galactic nuclei. We discuss the advantages of Ka-band, show the known sources and candidates, simulate projected baseline (uv) coverage, and discuss potential radio frequency feeds. The combination of these elements demonstrates the feasibility of a worldwide Ka network within the next few years!

  16. Perception of 'Back-Channeling' Nonverbal Feedback in Musical Duo Improvisation.

    Directory of Open Access Journals (Sweden)

    Nikki Moran

    Full Text Available In witnessing face-to-face conversation, observers perceive authentic communication according to the social contingency of nonverbal feedback cues ('back-channeling' by non-speaking interactors. The current study investigated the generality of this function by focusing on nonverbal communication in musical improvisation. A perceptual experiment was conducted to test whether observers can reliably identify genuine versus fake (mismatched duos from musicians' nonverbal cues, and how this judgement is affected by observers' musical background and rhythm perception skill. Twenty-four musicians were recruited to perform duo improvisations, which included solo episodes, in two styles: standard jazz (where rhythm is based on a regular pulse or free improvisation (where rhythm is non-pulsed. The improvisations were recorded using a motion capture system to generate 16 ten-second point-light displays (with audio of the soloist and the silent non-soloing musician ('back-channeler'. Sixteen further displays were created by splicing soloists with back-channelers from different duos. Participants (N = 60 with various musical backgrounds were asked to rate the point-light displays as either real or fake. Results indicated that participants were sensitive to the real/fake distinction in the free improvisation condition independently of musical experience. Individual differences in rhythm perception skill did not account for performance in the free condition, but were positively correlated with accuracy in the standard jazz condition. These findings suggest that the perception of back-channeling in free improvisation is not dependent on music-specific skills but is a general ability. The findings invite further study of the links between interpersonal dynamics in conversation and musical interaction.

  17. Perception of 'Back-Channeling' Nonverbal Feedback in Musical Duo Improvisation.

    Science.gov (United States)

    Moran, Nikki; Hadley, Lauren V; Bader, Maria; Keller, Peter E

    2015-01-01

    In witnessing face-to-face conversation, observers perceive authentic communication according to the social contingency of nonverbal feedback cues ('back-channeling') by non-speaking interactors. The current study investigated the generality of this function by focusing on nonverbal communication in musical improvisation. A perceptual experiment was conducted to test whether observers can reliably identify genuine versus fake (mismatched) duos from musicians' nonverbal cues, and how this judgement is affected by observers' musical background and rhythm perception skill. Twenty-four musicians were recruited to perform duo improvisations, which included solo episodes, in two styles: standard jazz (where rhythm is based on a regular pulse) or free improvisation (where rhythm is non-pulsed). The improvisations were recorded using a motion capture system to generate 16 ten-second point-light displays (with audio) of the soloist and the silent non-soloing musician ('back-channeler'). Sixteen further displays were created by splicing soloists with back-channelers from different duos. Participants (N = 60) with various musical backgrounds were asked to rate the point-light displays as either real or fake. Results indicated that participants were sensitive to the real/fake distinction in the free improvisation condition independently of musical experience. Individual differences in rhythm perception skill did not account for performance in the free condition, but were positively correlated with accuracy in the standard jazz condition. These findings suggest that the perception of back-channeling in free improvisation is not dependent on music-specific skills but is a general ability. The findings invite further study of the links between interpersonal dynamics in conversation and musical interaction.

  18. Perception of ‘Back-Channeling’ Nonverbal Feedback in Musical Duo Improvisation

    Science.gov (United States)

    Moran, Nikki; Hadley, Lauren V.; Bader, Maria; Keller, Peter E.

    2015-01-01

    In witnessing face-to-face conversation, observers perceive authentic communication according to the social contingency of nonverbal feedback cues (‘back-channeling’) by non-speaking interactors. The current study investigated the generality of this function by focusing on nonverbal communication in musical improvisation. A perceptual experiment was conducted to test whether observers can reliably identify genuine versus fake (mismatched) duos from musicians’ nonverbal cues, and how this judgement is affected by observers’ musical background and rhythm perception skill. Twenty-four musicians were recruited to perform duo improvisations, which included solo episodes, in two styles: standard jazz (where rhythm is based on a regular pulse) or free improvisation (where rhythm is non-pulsed). The improvisations were recorded using a motion capture system to generate 16 ten-second point-light displays (with audio) of the soloist and the silent non-soloing musician (‘back-channeler’). Sixteen further displays were created by splicing soloists with back-channelers from different duos. Participants (N = 60) with various musical backgrounds were asked to rate the point-light displays as either real or fake. Results indicated that participants were sensitive to the real/fake distinction in the free improvisation condition independently of musical experience. Individual differences in rhythm perception skill did not account for performance in the free condition, but were positively correlated with accuracy in the standard jazz condition. These findings suggest that the perception of back-channeling in free improvisation is not dependent on music-specific skills but is a general ability. The findings invite further study of the links between interpersonal dynamics in conversation and musical interaction. PMID:26086593

  19. O Espaço-tempo Subjetivo do Indivíduo (ETSI

    Directory of Open Access Journals (Sweden)

    Celson D. Pereira

    2010-07-01

    Full Text Available Graças a seu Sistema Nervoso Central – SNC, um indivíduo se percebe no espaço e no tempo de seu ambiente. Mas, através de seus sentidos suas percepções são subjetivas. Por outro lado, sua mente é influenciada por agentes físicos e substâncias químicas que venha a ingerir. Estas constatações banais, do cotidiano, devem ser levadas em conta quando se empreende a elaboração de uma teoria relativa à mente. Os contextos em que se insere uma teoria dessa natureza envolvem antigas questões, ainda abertas, fazendo parte do denominado “Problema do Conhecimento”. Apresento um pequeno percurso histórico das reflexões de teóricos de diferentes especialidades sobre aquele problema. Proponho que hoje, participando daquele percurso, uma estrutura conceitual pode ser concebida, conjugando o indivíduo se percebendo em três instâncias: o ambiente físico, o ambiente sociocultural e seu próprio corpo, constituindo assim, suas características mentais, sua memória e sua história de vida. Trata-se de um super-espaço, que, independentemente, de ser, objetivamente, imaginável, ou não, referese a algo que existe. Tenho denominado esta estrutura por (ETSI. Como emergente do SNC ela pode ser estudada em contextos de investigações da neurociência contemporânea. Deste empreendimento, proponho que se podem originar bases científicas para psicologia.Palavras-chave: Interior do indivíduo; Neurociência; Complexidade; Espaço-tempo Subjetivo; Consciência.

  20. Historical review of bryological research in Fruška Gora Mt. (Serbia

    Directory of Open Access Journals (Sweden)

    Ilić Miloš M.

    2016-01-01

    Full Text Available Fruška Gora is a mountain located in the southern part of Pannonian plane and it is poorly bryologicaly investigated as well as most parts of Serbia. First data on bryophytes, for this region, were published in 1949 by Teodor Soška in his paper Pregled mahovina i lišajeva u okolini Beograda (Review of mosses and lichens in the vicinity of Belgrade. Soška listed 34 species of mosses and 8 liverworts species for this region. Later, in 1955, Zlatko Pavletić in his capital work Prodromus flore briofita Jugoslavije (Prodromus of Yugoslavian bryophyte flora, stated 26 moss species and 3 liverwort species, without indicating specific localities, but all of them were Soška’s original results. In 1966, the second botanist with original findings of bryophytes on Fruška Gora was Popović, who recorded 2 liverwort and 19 moss species, for this mountain, also without specific localities. By far, the most comprehensive data were given by Cvetić and Sabovljević in 2004. Their study A contribution to the bryophyte flora of Fruška Gora (Vojvodina, Serbia counted total number of 118 mosses and 14 liverworts, on 16 localities within National park Fruška Gora. The latest study on bryophytes of Fruška Gora was in 2013, and it is the first and so far, the last study of bryophyte assemblages on grasslands. Authors of this paper recorded 18 species of mosses from 29 releveé. Complete bryophyte flora of Fruška Gora is still unknown. Considering the fact that this is the region with high biodiversity, dense hydrological network and a rather complex geology, Fruška Gora certainly deserves further bryological researches.

  1. Performance of a modified DuoPIGatron ion source for PLT neutral beam injectors

    International Nuclear Information System (INIS)

    Tsai, C.C.; Stirling, W.L.; Haselton, H.H.

    1978-09-01

    The performance of a modified duoPIGatron ion source for PLT neutral beam injectors is described. The 22-cm source has been operated to deliver beams of 70 A, up to 45 keV, and 0.5 sec. Following a brief review of source operation, the dominant reactions leading to an enhanced atomic ion fraction in the source plasma are emphasized. In addition to the high atomic ion species yield (about 85%), other important characteristics of the source such as high arc efficiency (about 1.1 A ion beam current per kW of arc power), long filament lifetime, high reliability, and scalability are also described

  2. CONSIDERAÇÕES SOBRE RESÍDUOS SÓLIDOS DE SERVIÇOS DE SAÚDE

    Directory of Open Access Journals (Sweden)

    Maria Auxiliadora Gomes de Mello Brito

    2000-12-01

    Full Text Available O presente estudo trata da situação dos resíduos sólidos de serviços de saúde ( RSSS e aborda a coleta seletiva de resíduos como uma alternativa para a redução do volume de lixo enviado para deposição ao solo. O trabalho lança uma discussão a respeito do "lixo" sob a ótica da educação ambiental e insere os RSSS nesse contexto. Pretende, através de abordagens educativas, despertar nas pessoas envolvidas com a geração de resíduos, e em especial os resíduos de serviços de saúde, uma consciência crítica sobre a sua responsabilidade como gerador de "lixo" e poluidor do meio ambiente. A mudança de atitudes resultará em combate ao desperdício e diminuição da geração dos diferentes tipos de resíduos com destino ao aterro sanitário.

  3. Indicação de vacinas e imunoglobulinas em indivíduos que apresentam comprometimento da imunidade

    Directory of Open Access Journals (Sweden)

    Bricks Lucia Ferro

    1998-01-01

    Full Text Available Com base na literatura, foi feita revisão sobre as recomendações para uso de vacinas e imunoglobulinas em indivíduos que apresentam comprometimento total ou parcial da imunidade, sobretudo relativa à decada de noventa. A análise de 75 referências permite chegar às principais conclusões: as vacinas contendo agentes vivos, geralmente são contra-indicadas para indivíduos que apresentam condições que determinam acentuado comprometimento da imunidade; as vacinas que contêm agentes mortos ou apenas frações antigênicas, apesar de serem menos imunogênicas e conferirem menores taxas de proteção aos imunodeprimidos, quando comparadas aos normais, são seguras e devem ser administradas a esses indivíduos. A imunização passiva é indicada nas mesmas doses para indivíduos imunodeprimidos e pessoas normais, com exceção da imunoglobulina contra o sarampo, que deve ser administrada aos imunodeprimidos no dobro das doses habituais, sempre que tiverem contato com sarampo, independentemente de sua situação vacinal anterior. Para aumentar a proteção dos imunodeprimidos contra a varicela e a influenza, recomenda-se vacinar contra essas doenças os familiares e os profissionais que atendam esses indivíduos.

  4. A ˜50 ka record of monsoonal variability in the Darjeeling foothill region, eastern Himalayas

    Science.gov (United States)

    Ghosh, Ruby; Bera, Subir; Sarkar, Anindya; Paruya, Dipak Kumar; Yao, Yi-Feng; Li, Cheng-Sen

    2015-04-01

    Pollen, phytoliths and δ 13C signatures of soil organic matter from two fluvial sedimentary sequences of the Darjeeling foothill region, eastern Himalayas are used to portray palaeoclimatic oscillations and their impact on regional plant communities over the last ˜50 ka. Quantitative palaeoclimate estimation using coexistence approach on pollen data and other proxies indicate significant oscillations in precipitation during the late part of MIS 3 (46.4-25.9 ka), early and middle part of MIS 2 (25.9-15.6 ka), and 5.4 to 3.5 ka. Middle to late MIS 3 (ca 46.4-31 ka.) was characterized by a comparatively low monsoonal activity and slightly higher temperature than that during ca 31 ka onwards. Simultaneous expansion of deciduous trees and chloridoid grasses also imply a drier and warmer phase. Between 31 and 22.3 ka (late MIS 3 to mid-MIS 2), higher precipitation and a slightly cooler temperature led to an increase in evergreen elements over deciduous taxa and wet-loving panicoid grasses over dry-loving chloridoid grasses than earlier. After ca 22.3 ka, shrinking of forest cover, expansion of C4 chloridoid grasses, Asteraceae and Cheno-ams in the vegetation with lowering of temperature and precipitation characterized the onset of the LGM which continued till 18.3 ka. End of the LGM is manifested by a restoration in the forest cover and in the temperature and precipitation regime. Later, during 5.4 to 4.3 ka, a strong monsoonal activity supported a dense moist evergreen forest cover that subsequently declined during 4.3 to 3.5 ka. A further increase in deciduous elements and non-arboreals might be a consequence of reduced precipitation and higher temperature during this phase. A comparison between monsoonal rainfall, MAT and palaeoatmospheric CO2 with floral dynamics since last ˜50 ka indicates that these fluctuations in plant succession were mainly driven by monsoonal variations.

  5. Effect of methylation on the side-chain pKa value of arginine.

    Science.gov (United States)

    Evich, Marina; Stroeva, Ekaterina; Zheng, Yujun George; Germann, Markus W

    2016-02-01

    Arginine methylation is important in biological systems. Recent studies link the deregulation of protein arginine methyltransferases with certain cancers. To assess the impact of methylation on interaction with other biomolecules, the pKa values of methylated arginine variants were determined using NMR data. The pKa values of monomethylated, symmetrically dimethylated, and asymmetrically dimethylated arginine are similar to the unmodified arginine (14.2 ± 0.4). Although the pKa value has not been significantly affected by methylation, consequences of methylation include changes in charge distribution and steric effects, suggesting alternative mechanisms for recognition. © 2015 The Protein Society.

  6. A Novel Ku-Band/Ka-Band and Ka-Band/E-Band Multimode Waveguide Couplers for Power Measurement of Traveling-Wave Tube Amplifier Harmonic Frequencies

    Science.gov (United States)

    Wintucky, Edwin G.; Simons, Rainee N.

    2015-01-01

    This paper presents the design, fabrication and test results for a novel waveguide multimode directional coupler (MDC). The coupler, fabricated from two dissimilar frequency band waveguides, is capable of isolating power at the second harmonic frequency from the fundamental power at the output port of a traveling-wave tube (TWT) amplifier. Test results from proof-of-concept demonstrations are presented for a Ku-band/Ka-band MDC and a Ka-band/E-band MDC. In addition to power measurements at harmonic frequencies, a potential application of the MDC is in the design of a satellite borne beacon source for atmospheric propagation studies at millimeter-wave (mm-wave) frequencies (Ka-band and E-band).

  7. Avaliação do gerenciamento dos resíduos de medicamentos e demais resíduos de serviços de saúde na Região Serrana de Santa Catarina

    Directory of Open Access Journals (Sweden)

    Juliana Aparecida Souza Amarante

    2016-10-01

    Full Text Available RESUMO A gestão de resíduos dos serviços de saúde (RSS constitui um grande desafio para o poder público, pois, apesar do avanço nos aspectos legislativos, ainda há grandes deficiências, especialmente relacionadas aos resíduos de medicamentos descartados inadequadamente. Este estudo teve como objetivo caracterizar o processo de descarte de drogas e resíduos dos serviços de saúde humana e veterinária em uma cidade de médio porte da Região Serrana de Santa Catarina. Foram realizadas visitas às unidades participantes, selecionadas por critérios de conveniência, contemplando unidades de saúde municipais, pet shops , clínicas veterinárias, hospital de atendimento humano, hospital de atendimento veterinário e empresas coletoras, totalizando 15 unidades participantes. A coleta de dados ocorreu de março a maio de 2014, com aplicação de questionários e roteiro de observação de campo. Os resultados evidenciaram deficiências no gerenciamento dos resíduos de medicamentos, assim como dos demais resíduos, nas etapas de segregação e armazenamento em instituições de atendimento humano e veterinário, com poucas exceções. As maiores dificuldades foram observadas nos estabelecimentos de atendimento veterinário, especialmente quanto à segregação e ao armazenamento dos resíduos contaminados, à falta de cuidado com material perfurocortante e às normas de biossegurança. A inexistência do Plano de Gerenciamento de Resíduos de Serviços de Saúde nas unidades de saúde e no hospital veterinário, assim como a falta de capacitações aos profissionais, a dissimilaridade no descarte de medicamentos entre os estabelecimentos e a falta de fiscalização por parte dos órgãos competentes foram os principais responsáveis pelo atual cenário de descarte inadequado dos resíduos na região.

  8. Engineering & Performance of DuoTurbo: Microturbine with Counter-Rotating Runners

    Science.gov (United States)

    Biner, D.; Hasmatuchi, V.; Violante, D.; Richard, S.; Chevailler, S.; Andolfatto, L.; Avellan, F.; Münch, C.

    2016-11-01

    Considering the nuclear phase-out strategy of several European countries and the future tendency to promote renewable energies, the exploitation of small hydropower sites (industrial partners. The modular in-line “plug & play” technology requires low investment, reaching economic feasibility with an available power between 5 kW and 25 kW. One stage of the microturbine consists of two axial counter-rotating runners that form a compact independent unit. Each runner of the turbine holds its own rim generator, the DuoTurbo-configuration involving that each hydraulic runner is integral with each electrical rotor. The possibility of stacking several stages in series enables covering quite a wide range of hydraulic power and, thus, recovering a maximum of energy dissipated in release valves of water supply systems. The present work introduces the global concept of the implemented prototype of the DuoTurbo-microturbine, to target a maximal injected power of 5 kW for a discharge of 9 l/s and a head of 24.5 m per stage. The main features of the hydraulic, the mechanical, the electrical and the electronic design are presented. The hydraulic performance is, then, assessed using CFD simulations for the expected operating range. Finally, the performance measurements of the single-stage prototype installed in the hydraulic test rig of the HES-SO Valais//Wallis are presented.

  9. Análise cinemática da marcha de indivíduos com osteoartrose do joelho

    OpenAIRE

    Santos, Diego Murilo dos

    2010-01-01

    Com este estudo descritivo objetivou-se avaliar as características cinemáticas da marcha de indivíduos com osteoartrose de joelhos. Especificamente: analisar as características clínicas desses indivíduos; caracterizar as variáveis cinemáticas da marcha em velocidade habitual; verificar e comparar variáveis cinemáticas da marcha entre diferentes velocidades. Participaram 18 indivíduos (14 mulheres e 4 homens) com média de idade 66 ± 7,6 anos. Após a aprovação do Comitê de Ética em pesquisas co...

  10. The Hydraulic Test Report for Non-instrumented Irradiation Test Rig of DUO-Cooled Annular Pellet

    International Nuclear Information System (INIS)

    Kim, Dae Ho; Lee, Kang Hee; Shin, Chang Hwan; Yang, Yong Sik; Kim, Sun Ki; Bang, Je Geon; Song, Kun Woo

    2007-08-01

    This report presents the results of pressure drop test and vibration test for non-instrumented rig of Advanced PWR DUO-Fuel Annular Pellet which were designed and fabricated by KAERI. From the pressure drop test results, it is noted that the flow velocity across the non-instrumented rig of Advanced PWR DUO-Fuel Annular Pellet corresponding to the pressure drop of 200 kPa is measured to be about 8.30 kg/sec. Vibration frequency results for the non-instrumented rig at the pump spin frequency ranges from 19.0 to 32.0 Hz, RMS(Root Mean Square) displacement for the non-instrumented rig of Advanced PWR DUO-Fuel Annular Pellet is less than 7.25 m, and the maximum displacement is less than 31.27 μm. This test was performed at the FIVPET facility

  11. Uusim tehnika annab säästu ka maasoojuspumpades / Lauri Lehtinen

    Index Scriptorium Estoniae

    Lehtinen, Lauri

    2009-01-01

    Õhksoojuspumpadega tuntust kogunud inverter- ehk sagedusmuunduriga kompressortehnikat kasutatakse ka uue põlvkonna maasoojuspumpades. Tootjate sõnul annab invertertehnika varasemate seadmetega võrreldes umbes 10–15% kokkuhoidu

  12. NOAA Ship Ka'imimoana Underway Meteorological Data, Near Real Time

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — NOAA Ship Ka'imimoana Underway Meteorological Data (Near Real Time, updated daily) are from the Shipboard Automated Meteorological and Oceanographic System (SAMOS)...

  13. Ka-Band Electronically Steered CubeSat Antenna, Phase II

    Data.gov (United States)

    National Aeronautics and Space Administration — Kymeta Government Solutions (KGS) designed, analyzed, built, tested, and delivered a small, lightweight, low-cost, low-power electronically steered Ka-band prototype...

  14. Solid State KA-Band, Solid State W-Band and TWT Amplifiers, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — Phase I of the proposal describes plans to develop a state of the art transmitter for the W-Band and KA -Band Cloud Radar system. Our focus will be concentrated in...

  15. CIA võis lennutada ja hoida vange ka Euroopa idaosas / Kaivo Kopli

    Index Scriptorium Estoniae

    Kopli, Kaivo

    2006-01-01

    Amnesty Internationali raportis antakse ülevaade kolme vahistatud Jeemeni mehe kogetust aastatel 2003-2005. Meeste tunnistustest järeldab Amnesty, et neid hoiti kinni ka Ida-Euroopas. Lisa: Kolme Jeemeni mehe tunnistused

  16. Venezia filmifestivali punane vaip ootab tänavu ka eestlasi / Tiit Tuumalu

    Index Scriptorium Estoniae

    Tuumalu, Tiit, 1971-

    2007-01-01

    Eesti mängufilm "Sügisball" (režissöör Veiko Õunpuu, produtsent Katrin Kissa) esilinastub 7. septembril Venezia 64. filmifestivali konkursiprogrammis Orizzonti. Ka teistest võistlevatest filmidest

  17. MMIC for High-Efficiency Ka-BAnd GaN Power Amplifiers (2007043), Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — This proposal addresses the need for high-efficiency, high-output power amplifiers operating in the Ka-band frequencies. For space communications, the power...

  18. Tänane heategevuskontsert toetab ka Kiigemetsa kooli / Vaike Käosaar

    Index Scriptorium Estoniae

    Käosaar, Vaike

    2007-01-01

    Heategevuskontserdist "Ma olen eriline" Põltsamaa lossihoovis, kus esinevad mitmed Eestimaa tuntud muusikud ja mille tulusid kasutatakse samasuguse pealkirjaga raamatu kirjastamise toetuseks, et aidata peresid, kus kasvab autistlikke lapsi ning Kiigemetsa Kooli, kus õpetatakse teiste seas ka autismipuudega lapsi

  19. Computational chemical analysis of unconjugated bilirubin anions and insights into pKa values clarification

    Science.gov (United States)

    Vega-Hissi, Esteban G.; Estrada, Mario R.; Lavecchia, Martín J.; Pis Diez, Reinaldo

    2013-01-01

    The pKa, the negative logarithm of the acid dissociation equilibrium constant, of the carboxylic acid groups of unconjugated bilirubin in water is a discussed issue because there are quite different experimental values reported. Using quantum mechanical calculations we have studied the conformational behavior of unconjugated bilirubin species (in gas phase and in solution modeled implicitly and explicitly) to provide evidence that may clarify pKa values because of its pathophysiological relevance. Our results show that rotation of carboxylate group, which is not restricted, settles it in a suitable place to establish stronger interactions that stabilizes the monoanion and the dianion to be properly solvated, demonstrating that the rationalization used to justify the high pKa values of unconjugated bilirubin is inappropriate. Furthermore, low unconjugated bilirubin (UCB) pKa values were estimated from a linear regression analysis.

  20. Prediction Of pKa From Chemical Structure Using Free And Open-Source Tools

    Science.gov (United States)

    The ionization state of a chemical, reflected in pKa values, affects lipophilicity, solubility, protein binding and the ability of a chemical to cross the plasma membrane. These properties govern the pharmacokinetic parameters such as absorption, distribution, metabolism, excreti...

  1. Advances in Ka-Band Communication System for CubeSats and SmallSats

    Science.gov (United States)

    Kegege, Obadiah; Wong, Yen F.; Altunc, Serhat

    2016-01-01

    A study was performed that evaluated the feasibility of Ka-band communication system to provide CubeSat/SmallSat high rate science data downlink with ground antennas ranging from the small portable 1.2m/2.4m to apertures 5.4M, 7.3M, 11M, and 18M, for Low Earth Orbit (LEO) to Lunar CubeSat missions. This study included link analysis to determine the data rate requirement, based on the current TRL of Ka-band flight hardware and ground support infrastructure. Recent advances in Ka-band transceivers and antennas, options of portable ground stations, and various coverage distances were included in the analysis. The link/coverage analysis results show that Cubesat/Smallsat missions communication requirements including frequencies and data rates can be met by utilizing Near Earth Network (NEN) Ka-band support with 2 W and high gain (>6 dBi) antennas.

  2. Updating and test on 12 kA HTSCL for Russia JINR

    International Nuclear Information System (INIS)

    Zhou, Tingzhi; Ding, K; Liu, C; Xu, C; Feng, H; Wu, H; Liu, X; Song, Y

    2014-01-01

    The Joint Institute for Nuclear Research (JINR) started manufacture and test of superconducting magnets for the new accelerator complex Nuclotron-based Ion Collider fAcility (NICA). A pair of current leads rated 12 kA was developed for cold testing of the magnets in 2012. The operation of the facility needs ∼350 leads rated from 100 A to 12 kA to convey current for the magnets. After the test of the pair of 12 kA leads in JINR a contract of supplying 3 pairs of 12 kA high temperature superconducting current leads (HTSCLs) were signed to ASIPP this year. In this paper the design updating and test of the current leads are introduced.

  3. AHP 44: BILINGUAL EDUCATION IN AMDO - A CASE STUDY OF KHRI KA NATIONALITIES BOARDING SCHOOL

    Directory of Open Access Journals (Sweden)

    Tshe dpal rdo rje ཚེ་དཔལ་རྡོ་རྗེ། (Caihuan Duojie 才还多杰

    2017-02-01

    Full Text Available The state sponsored education of Tibetan children in Khri ka (Guide County, Mtsho lho (Hainan Tibetan Autonomous Prefecture, Mtsho sngon (Qinghai Province, China, using Khri ka Nationalities Boarding School as a case study, is described. School history, the government rationale for closing village-based Tibetan primary schools, and the nationalities boarding schools operating in Khri ka in 2015 are introduced. Detailed descriptions of teachers; students; instructional materials; classes; language use; rules; punishments; home visiting; communication between students, parents, and teachers; school reports to the local authorities; and official local supervision and evaluation of Khri ka Nationalities Boarding School are also provided. An overall evaluation of this school concludes the paper.

  4. Determination of the pKa of Benzophenones in Ethanol-Water

    Directory of Open Access Journals (Sweden)

    G. T. Castro

    2000-03-01

    Full Text Available The pKa of monohydroxylated benzophenones was determined by UV spectroscopy. The values obtained are coherent with the resonant forms and hydrogen bond intramolecular of the analyzed compounds.

  5. Riik plaanib haiglatele anda õiguse ka arstirohtu müüa / Andrus Karnau

    Index Scriptorium Estoniae

    Karnau, Andrus

    2006-01-01

    Vt. ka Postimees : na russkom jazõke 31. märts lk. 3. Riik tahab anda haiglatele õiguse pidada jaemüügirohupoode, selle kava vastu on aga konkureerivad apteegiketid, konkurentsi- ja ravimiamet. Lisa: Ketistunud apteegiturg

  6. Potential for Paragliding Tourism Development in Niška Banja (South Serbia

    Directory of Open Access Journals (Sweden)

    Lazar Pavić

    2013-07-01

    Full Text Available People today pay attention more on their health and because of that sports tourism becomes more popular. Especially popular segment of sports tourism is adventure sports including paragliding which has a special place. Tourist product of Niška Banja, as one of more visited tourism destination in Serbia, is mostly based on its health function. In the first part of this paper it is presented touristic valorisation of Niška Banja using criteria recommended form World Tourism Organization. In the second part of this paper it is used marketing mix as a tool for creating potential tourism product Paragliding weekend in Niška Banja. The aim of this paper is to show how the tourism offers of Niška Banja can be diversified using a new integrated product and how the touristic value can be increased.

  7. Development of a 20kA current feedthrough using YBCO bulk conductors

    International Nuclear Information System (INIS)

    Maehata, Keisuke; Ishibashi, Kenji; Shintomi, Takakazu; Iwamoto, Akifumi; Maekawa, Ryuji; Mito, Toshiyuki

    2004-01-01

    In the phase II experiment of the Large Helical Device (LHD) of the National Institute for Fusion Science (NIFS), it is planned to operate the helical coils at 1.8 K by employing pressurized superfluid cooling to raise the magnetic field to 4 T with 17.3 kA. It is important to develop a 20kA-class current feedthrough into the 1.8 K region, but it must have a high current capacity and low heat leakage in the maximum magnetic leakage field of 1 T. Rectangle-shaped YBCO bulk conductors measuring 20 mm wide, 140 mm long and 10 mm thick were manufactured from square-pillar-shaped YBCO bulk materials for a 20 kA current. To check the quality of the bulk conductors, internal defects or cracks were detected by carrying out a precise survey of trapped magnetic flux. An assembled 20 kA current feedthrough was mounted in the λ-plate of a pressurized superfluid cooling cryostat. Experiments of current feeding into the 1.8 K region were carried out by operating the 20 kA current feedthrough. In the experiments, the transport current was kept at 20 kA for longer than 1,200 s. During the 20 kA operation, the current transport section of the YBCO bulk conductors remained in the superconducting state and the voltage drop between the YBCO bulk conductors and the copper electrode was observed to be constant. A contact resistance and the Joule heat generation in the joint region between the YBCO bulk conductors and the copper electrode were obtained as 1.45 nΩ and 0.72 W, respectively in the 20 kA operation. We have demonstrated the feasibility of using a 20 kA current feedthrough for the phase II experiment of the LHD. (author)

  8. Test results on prototype 50-kA conductors for tokamak induction heating coils

    International Nuclear Information System (INIS)

    Wollan, J.J.; Williamson, K.D. Jr.; Turck, B.

    1979-01-01

    Fabricability of a very large, 50-kA superconducting cable has been demonstrated. Test results of critical current and stability measurements are presented. The design critical current of 55 kA at 7 T was met. The recovery current was degraded as a result of the expectedly poor insulation system. Energy loss measurements on prototype advanced mixed matrix conductors, which will be incorporated into a second prototype cable, are presented

  9. Vesnička tesařů Ostrovec (Johannesdörfl)

    Czech Academy of Sciences Publication Activity Database

    Vlček, Pavel

    6/7, 2016/2017 (2017), s. 39-46 ISSN 1805-8906 R&D Projects: GA MK DG16P02H023 Keywords : Ostrovec (Johannesdörfl) * carpenters * church od St. John the Baptist * František Maxmilián Kaňka * Johann Mathes Spiess * Anton Haffenecker Subject RIV: AL - Art, Architecture, Cultural Heritage OBOR OECD: Architectural design

  10. Potencial evocado miogênico vestibular ocular e cervical simultâneo em indivíduos normais

    OpenAIRE

    Silva,Tatiana Rocha; Resende,Luciana Macedo de; Santos,Marco Aurélio Rocha

    2016-01-01

    RESUMO Objetivo: Caracterizar o registro e analisar os resultados do potencial evocado miogênico vestibular cervical e ocular combinado em indivíduos sem queixas auditivas e vestibulares. Métodos: Participaram da pesquisa 30 indivíduos sem queixa auditiva e com audição dentro dos padrões de normalidade. A coleta de dados foi realizada por meio do potencial evocado miogênico vestibular cervical e ocular registrados simultaneamente. Resultados: Houve diferença entre as orelhas direita e esq...

  11. Valorização de resíduos em materiais de construção

    OpenAIRE

    Pinho, Paulo André Martins de

    2014-01-01

    O trabalho desenvolvido nesta dissertação enquadra-se no objetivo geral de valorização de resíduos provenientes de unidades de pasta Kraft de eucalipto, nomeadamente cinzas de fundo e cinzas volantes das fornalhas de biomassa. Atualmente uma das mais graves preocupações das sociedades dos países desenvolvidos passa por encontrar um destino adequado para resíduos gerados. A construção civil, aliada com a indústria da produção de pasta e papel que por ano gera milhares de toneladas de resídu...

  12. Improving Cry8Ka toxin activity towards the cotton boll weevil (Anthonomus grandis).

    Science.gov (United States)

    Oliveira, Gustavo R; Silva, Maria C M; Lucena, Wagner A; Nakasu, Erich Y T; Firmino, Alexandre A P; Beneventi, Magda A; Souza, Djair S L; Gomes, José E; de Souza, José D A; Rigden, Daniel J; Ramos, Hudson B; Soccol, Carlos R; Grossi-de-Sa, Maria F

    2011-09-09

    The cotton boll weevil (Anthonomus grandis) is a serious insect-pest in the Americas, particularly in Brazil. The use of chemical or biological insect control is not effective against the cotton boll weevil because of its endophytic life style. Therefore, the use of biotechnological tools to produce insect-resistant transgenic plants represents an important strategy to reduce the damage to cotton plants caused by the boll weevil. The present study focuses on the identification of novel molecules that show improved toxicity against the cotton boll weevil. In vitro directed molecular evolution through DNA shuffling and phage display screening was applied to enhance the insecticidal activity of variants of the Cry8Ka1 protein of Bacillus thuringiensis. Bioassays carried out with A. grandis larvae revealed that the LC50 of the screened mutant Cry8Ka5 toxin was 3.15-fold higher than the wild-type Cry8Ka1 toxin. Homology modelling of Cry8Ka1 and the Cry8Ka5 mutant suggested that both proteins retained the typical three-domain Cry family structure. The mutated residues were located mostly in loops and appeared unlikely to interfere with molecular stability. The improved toxicity of the Cry8Ka5 mutant obtained in this study will allow the generation of a transgenic cotton event with improved potential to control A. grandis.

  13. Improving Cry8Ka toxin activity towards the cotton boll weevil (Anthonomus grandis

    Directory of Open Access Journals (Sweden)

    Gomes José E

    2011-09-01

    Full Text Available Abstract Background The cotton boll weevil (Anthonomus grandis is a serious insect-pest in the Americas, particularly in Brazil. The use of chemical or biological insect control is not effective against the cotton boll weevil because of its endophytic life style. Therefore, the use of biotechnological tools to produce insect-resistant transgenic plants represents an important strategy to reduce the damage to cotton plants caused by the boll weevil. The present study focuses on the identification of novel molecules that show improved toxicity against the cotton boll weevil. In vitro directed molecular evolution through DNA shuffling and phage display screening was applied to enhance the insecticidal activity of variants of the Cry8Ka1 protein of Bacillus thuringiensis. Results Bioassays carried out with A. grandis larvae revealed that the LC50 of the screened mutant Cry8Ka5 toxin was 3.15-fold higher than the wild-type Cry8Ka1 toxin. Homology modelling of Cry8Ka1 and the Cry8Ka5 mutant suggested that both proteins retained the typical three-domain Cry family structure. The mutated residues were located mostly in loops and appeared unlikely to interfere with molecular stability. Conclusions The improved toxicity of the Cry8Ka5 mutant obtained in this study will allow the generation of a transgenic cotton event with improved potential to control A. grandis.

  14. Computing pKa Values in Different Solvents by Electrostatic Transformation.

    Science.gov (United States)

    Rossini, Emanuele; Netz, Roland R; Knapp, Ernst-Walter

    2016-07-12

    We introduce a method that requires only moderate computational effort to compute pKa values of small molecules in different solvents with an average accuracy of better than 0.7 pH units. With a known pKa value in one solvent, the electrostatic transform method computes the pKa value in any other solvent if the proton solvation energy is known in both considered solvents. To apply the electrostatic transform method to a molecule, the electrostatic solvation energies of the protonated and deprotonated molecular species are computed in the two considered solvents using a dielectric continuum to describe the solvent. This is demonstrated for 30 molecules belonging to 10 different molecular families by considering 77 measured pKa values in 4 different solvents: water, acetonitrile, dimethyl sulfoxide, and methanol. The electrostatic transform method can be applied to any other solvent if the proton solvation energy is known. It is exclusively based on physicochemical principles, not using any empirical fetch factors or explicit solvent molecules, to obtain agreement with measured pKa values and is therefore ready to be generalized to other solute molecules and solvents. From the computed pKa values, we obtained relative proton solvation energies, which agree very well with the proton solvation energies computed recently by ab initio methods, and used these energies in the present study.

  15. A Ka-Band Celestial Reference Frame with Applications to Deep Space Navigation

    Science.gov (United States)

    Jacobs, Christopher S.; Clark, J. Eric; Garcia-Miro, Cristina; Horiuchi, Shinji; Sotuela, Ioana

    2011-01-01

    The Ka-band radio spectrum is now being used for a wide variety of applications. This paper highlights the use of Ka-band as a frequency for precise deep space navigation based on a set of reference beacons provided by extragalactic quasars which emit broadband noise at Ka-band. This quasar-based celestial reference frame is constructed using X/Ka-band (8.4/32 GHz) from fifty-five 24-hour sessions with the Deep Space Network antennas in California, Australia, and Spain. We report on observations which have detected 464 sources covering the full 24 hours of Right Ascension and declinations down to -45 deg. Comparison of this X/Ka-band frame to the international standard S/X-band (2.3/8.4 GHz) ICRF2 shows wRMS agreement of approximately 200 micro-arcsec in alpha cos(delta) and approximately 300 micro-arcsec in delta. There is evidence for systematic errors at the 100 micro-arcsec level. Known errors include limited SNR, lack of instrumental phase calibration, tropospheric refraction mis-modeling, and limited southern geometry. The motivation for extending the celestial reference frame to frequencies above 8 GHz is to access more compact source morphology for improved frame stability and to support spacecraft navigation for Ka-band based NASA missions.

  16. Důraz školy na akademický úspěch: TIMSS 2011 jako sonda do reformy v České republice/ School emphasis on academic success in TIMSS 2011 as a window on curricular reform in the Czech Republic

    Directory of Open Access Journals (Sweden)

    Dominik Dvořák

    2015-04-01

    Full Text Available V šetření TIMSS 2011 se objevil index nazvaný „důraz školy na studijní úspěch“ (SEAS. Cílem článku je osvětlit skutečnost, že české školy vykazují poměrně nápadné hodnoty tohoto indexu. Dále pomocí SEAS analyzuje vztah mezi postoji českých škol k reformě a znalostmi a dovednostmi jejich žáků. Teoretický úvod popisuje konstrukt akademický optimismus a index SEAS zavedený v šetření TIMSS. Následně je provedena explorativní sekundární analýza dat o úrovni složek SEAS v případě českých škol se zaměřením na nápadné odchylky hodnot. Práce vychází z výsledků žáků čtvrtých ročníků v matematickém testu TIMSS 2011 a z odpovídajících učitelských a ředitelských dotazníků. Pro analýzu vztahů v datech jsou použity základní prostředky popisné a inferenční statistiky. Zjištění ukazují na disproporčně nízkou důvěru ředitelů ve snahu žáků ve škole dobře prospívat, která je společná regionálnímu klastru zemí. Dále analýza přinesla nečekaná zjištění o vztahu mezi postoji ředitelů a učitelů ke kurikulární reformě a výsledky jejich žáků v matematice. Z literatury známá i naše původní zjištění o komponentách indexu SEAS v podmínkách českých škol přinášejí zajímavé pohledy mj. na vnímání reformních procesů v českých školách a doplňují tak literaturu o implementaci, resp. recepci reformy.

  17. DESENVOLVIMENTO DE ARGAMASSAS COLANTES UTILIZANDO RESÍDUOS DE BRITAGEM DE ROCHAS CALCÁRIAS.

    Directory of Open Access Journals (Sweden)

    Walney Gomes da Silva

    2010-01-01

    Full Text Available As argamassas colantes têm grande emprego na construção civil, com isso este trabalho pretende avaliar a utilização de resíduos de britagem de rochas calcárias nas argamassas colantes, devido à sua grande utilização para fixar revestimentos cerâmicos sobre substratos. Além da caracterização de uma argamassa colante à base de resíduos, também se viu uma preocupação quanto à utilização de arisco na formulação da mesma, caso muito frequente em Mossoró e região. Assim, começou-se um trabalho de levantamentos bibliográficos, estudos dos materiais e formulação de traços, a fim de demonstrar novas modalidades de argamassas colantes, regidas pelas normas técnicas, que a venham contribuir para um amplo campo de materiais que antes eram desperdiçados. Sempre levando em conta questões financeiras de forma a que esta venha não só reduzir desperdícios, que iria ocupar localidades, já ou prestes a serem desmatadas, onde se poderia ser utilizadas para outros fins, no caso das já desmatadas, ou trazendo novas fontes de rendas mesmo com a conservação da mata original. Mas também, a questão de redução de custos que se vem a partir do momento em que se trabalha com um material amplamente abundante o que o torna de custo mais acessível, entrando ai dados de custo-benefício.Deve-se ressaltar que toda formulação dessas argamassas são feitas de maneira a atender o mercado consumidor, em alternativas bem pensadas desde a escolha dos materiais a serem utilizados até os traços a serem trabalhados, onde destacamos suas escolhas pelas características regionais e já utilizadas na localidade em empresas que por aqui constam. PALAVRAS-CHAVE: argamassa colante, resíduo de britagem, propriedades.

  18. Comportamento comunicativo de indivíduos com diagnóstico de esquizofrenia

    Directory of Open Access Journals (Sweden)

    Ariana Elite dos Santos

    2014-08-01

    Full Text Available Objetivo descrever o comportamento comunicativo de indivíduos com diagnóstico de esquizofrenia em processo de reabilitação psicossocial. Métodos estudo descritivo-exploratório, com amostra por conveniência de recorte transversal. Participaram 50 indivíduos com diagnóstico de esquizofrenia, de ambos os sexos, com faixa etária entre 19 e 75 anos, usuários de um Núcleo de Saúde Mental de uma cidade do interior do estado de São Paulo, Brasil. Foi realizado levantamento nos prontuários para obter dados pessoais e o subtipo da esquizofrenia. Para avaliar o comportamento comunicativo utilizou-se a Bateria Montreal de Avaliação da Comunicação (Bateria MAC, constituída por 14 tarefas que avaliam os aspectos discursivo, pragmático inferencial, léxico-semântico e prosódico da linguagem. Resultados os indivíduos, em sua maioria, eram do sexo masculino, com baixa escolaridade, praticantes do catolicismo e com esquizofrenia do subtipo paranoide. A avaliação pela Bateria MAC apontou alterações em todas as tarefas avaliadas e a maioria dos participantes respondeu que é consciente da dificuldade comunicativa. As maiores alterações ocorreram nas tarefas de evocação lexical com critério semântico, atos de fala indiretos, discurso conversacional e discurso narrativo, e, as menores alterações, ocorreram nos componentes prosódicos no nível de compreensão, destacando-se que, o nível da produção nos aspectos linguísticos e emocionais da prosódia, também apresentou alteração considerável. Conclusão todas as tarefas avaliadas apresentaram alterações. Os aspectos mais prejudicados foram o discurso e a pragmática, que não devem ser relacionados somente aos aspectos linguísticos, mas também às características de alteração do pensamento e da cognição, ao embotamento afetivo e questões sociais desse transtorno.

  19. Efeito da perda prematura de molares decíduos na sobressaliência

    Directory of Open Access Journals (Sweden)

    Yérica M García

    2011-01-01

    Full Text Available A perda precoce de molares decíduos predispõe as maloclusões, entre estas o apinhamento dentário, impactação de dentes permanentes e alteração da relação molar e canino. O objetivo do estudo foi determinar o efeito das perdas precoces dos molares decíduos na relação horizontal incisiva. O estudo é do tipo documentado, retrospetivo e observacional. Foram avaliados os registros ortodônticos (histórias clínicas, fotografias e radiografias de 209 pacientes na faixa etária de 4 a 15 anos de idade. A relação incisiva horizontal foi considerada normal para os pacientes do GRUPO 1, com contato entre a face incisal dos incisivos inferiores e a face palatina dos incisivos superiores. No GRUPO 2, a relação incisiva horizontal foi considerada aumentada, com distância positiva entre eles e no GRUPO 3, a relação incisiva horizontal foi considerada negativa quando as faces incisais dos incisivos superiores e inferiores se encontravam a topo ou em mordida cruzada. Os dados foram analisados através do coeficiente Pearson (p ≤ 0,001. Na análise dos dados coletados, o total de quarenta e cinco pacientes (22% apresentaram perdas prematuras. A prevalência destas perdas não apresentou diferença significativa entre sexos e foi maior no grupo de faixa etária de 7 a 9 anos de idade. Dos pacientes com perda prematura seis (13,3% foram clasificados no GRUPO 1; doze (26,7% no GRUPO 2 e vinte e sete (60% no GRUPO 3. A relação entre o número de molares perdidos e a presença de mordida cruzada anterior foi encontrada, e a média de molares perdidos (4,7 foi maior no GRUPO 3. Os resultados mostraram que as perdas precoces dos molares decíduos apresentam uma relação estatisticamente significante com a mordida cruzada anterior, sugerindo que a falta de suporte oclusal pode favorecer o desenvolvimento protrusivo da mandibula.

  20. EFEITO DA ADIÇÃO DE RESÍDUOS DE PODA DA ERVA-MATE EM PAINÉIS AGLOMERADOS

    OpenAIRE

    Carvalho, Amelia Guimarães; Andrade, Bruno Geike de; Cabral, Carla Priscilla Távora; Vital, Benedito Rocha

    2015-01-01

    O objetivo deste trabalho foi avaliar a viabilidade técnica da utilização de resíduos da poda de erva-mate na produção de painéis aglomerados. Foram produzidos painéis de aglomerados nas seguintes composições: 100% de pinus (T1), 100% de resíduos de erva-mate com casca (T2), 100% de resíduos de erva-mate sem casca (T3), 50% de pinus com 50% de resíduos de erva-mate com casca (T4) e 50% de pinus com 50% de resíduos de erva-mate sem casca (T5). Os painéis foram produzidos com o adesivo ureia-fo...

  1. INCORPORAÇÃO DE RESÍDUOS SÓLIDOS NA FABRICAÇÃO DE TIJOLOS SOLO-CIMENTO

    OpenAIRE

    de Oliveira, Josiane Rodrigues; do Amaral, Adriana Garcia; Schneider, Roselene Maria

    2014-01-01

    O modo inadequado de extração de recursos naturais e a poluição provocada por resíduos geram impactos sobre o meio ambiente. Visando oferecer alternativas de destinação dos resíduos sólidos urbanos, como os resíduos de tornearia mecânica, objetivou-se analisar as características físicas e mecânicas de tijolos compostos por misturas ternárias de solo-cimento-resíduo e avaliar a viabilidade da sua utilização em construções. Os tijolos solo-cimento-resíduo foram moldados em prensa manual, empreg...

  2. Molecular Paleoclimate Reconstructions over the Last 9 ka from a Peat Sequence in South China.

    Directory of Open Access Journals (Sweden)

    Xinxin Wang

    Full Text Available To achieve a better understanding of Holocene climate change in the monsoon regions of China, we investigated the molecular distributions and carbon and hydrogen isotope compositions (δ13C and δD values of long-chain n-alkanes in a peat core from the Shiwangutian (SWGT peatland, south China over the last 9 ka. By comparisons with other climate records, we found that the δ13C values of the long-chain n-alkanes can be a proxy for humidity, while the δD values of the long-chain n-alkanes primarily recorded the moisture source δD signal during 9-1.8 ka BP and responded to the dry climate during 1.8-0.3 ka BP. Together with the average chain length (ACL and the carbon preference index (CPI data, the climate evolution over last 9 ka in the SWGT peatland can be divided into three stages. During the first stage (9-5 ka BP, the δ13C values were depleted and CPI and Paq values were low, while ACL values were high. They reveal a period of warm and wet climate, which is regarded as the Holocene optimum. The second stage (5-1.8 ka BP witnessed a shift to relatively cool and dry climate, as indicated by the more positive δ13C values and lower ACL values. During the third stage (1.8-0.3 ka BP, the δ13C, δD, CPI and Paq values showed marked increase and ACL values varied greatly, implying an abrupt change to cold and dry conditions. This climate pattern corresponds to the broad decline in Asian monsoon intensity through the latter part of the Holocene. Our results do not support a later Holocene optimum in south China as suggested by previous studies.

  3. Molecular Paleoclimate Reconstructions over the Last 9 ka from a Peat Sequence in South China

    Science.gov (United States)

    Wang, Xinxin; Huang, Xianyu; Sachse, Dirk; Ding, Weihua; Xue, Jiantao

    2016-01-01

    To achieve a better understanding of Holocene climate change in the monsoon regions of China, we investigated the molecular distributions and carbon and hydrogen isotope compositions (δ13C and δD values) of long-chain n-alkanes in a peat core from the Shiwangutian (SWGT) peatland, south China over the last 9 ka. By comparisons with other climate records, we found that the δ13C values of the long-chain n-alkanes can be a proxy for humidity, while the δD values of the long-chain n-alkanes primarily recorded the moisture source δD signal during 9–1.8 ka BP and responded to the dry climate during 1.8–0.3 ka BP. Together with the average chain length (ACL) and the carbon preference index (CPI) data, the climate evolution over last 9 ka in the SWGT peatland can be divided into three stages. During the first stage (9–5 ka BP), the δ13C values were depleted and CPI and Paq values were low, while ACL values were high. They reveal a period of warm and wet climate, which is regarded as the Holocene optimum. The second stage (5–1.8 ka BP) witnessed a shift to relatively cool and dry climate, as indicated by the more positive δ13C values and lower ACL values. During the third stage (1.8–0.3 ka BP), the δ13C, δD, CPI and Paq values showed marked increase and ACL values varied greatly, implying an abrupt change to cold and dry conditions. This climate pattern corresponds to the broad decline in Asian monsoon intensity through the latter part of the Holocene. Our results do not support a later Holocene optimum in south China as suggested by previous studies. PMID:27505008

  4. Kanegelo ya Nimirode: Re lebelela diphihlelelo t�a gagwe ka lefsa

    Directory of Open Access Journals (Sweden)

    Elelwani B. Farisani

    2011-03-01

    Full Text Available Kanegelo ya Hama/Nimirode e �omi�it�we go gatelela Bathobaso ba Afrika-Borwa le ba Amerika. Taodi�wana ye e lekola Nimirode ka lefsa le go t�ea magato a go bu�et�a seriti sa gagwe le sa Bathobaso sekeng.Seo se tlo dirwa ka dikgato t�e tlhano ka mo tlase. Sa mathomo, re tlo lekola dimelo t�a bana ba Noage, go kwe�i�a Nimirode, yo e lego yena �edi ye kgolo ya taodi�wana ye. Sa bobedi re tlo lebelela ka fao bangwadi ba bangwe ba t�welet�ago seswant�ho sa go befa sa Nimirode. Sa boraro, re tlo sekaseka tiri�o ya kanegelo ya Hama/Nimirode go gatelela le go dira Bathobaso makgoba. Sa bone, re tlo sekaseka diphihlelelo le dikatlego t�a Nimirode. Mo re tlo tsepelela diphihlelelo t�a gagwe t�e tharo t�e kgolo bjalo ka go ba mmu�i wa maemo, motsomi yo maatla le moagi. Nepo ya karolo ye ke go ganet�ana le tshekatsheko ya go se be botse ye e nepilwego Nimirode nakong ya go feta. Re tlo tlalelet�a ka go fa tshekatsheko ye e tebilego ya thogako godimo ga Hama/Ku�e/Nimirode. Sa bohlano, ebile e le sa mafelelo, re tlo t�welet�a nyanyeng bohlokwa bja kanegelo ya Nimirode go bao ba bego ba gatelet�we le go ba makgoba ka baka la temana ye. Re tlo nepi�a Afrika-Borwa.

  5. Emissão de metano por decomposição de resíduo florestal inundado

    Directory of Open Access Journals (Sweden)

    Maria M. V. Zanoni

    2015-02-01

    Full Text Available A construção de represas pode aumentar a emissão de gases do efeito estufa (GEE, principalmente metano (CH4 pela decomposição anaeróbica dos resíduos florestais, como galhos, ramos, folhas e miscelânea inundados. Objetivou-se, neste estudo, avaliar a emissão de CH4 após a inundação do solo coberto com resíduos florestais. Unidades experimentais foram construídas com tubos de PVC contendo solo e diferentes combinações de dose (0; 21,2; 42,3 e 64,1 Mg ha-1 e tipo de resíduos (folhas, ramos e miscelânea, galhos e composição original e água de rio. O delineamento experimental foi inteiramente casualizado com arranjo fatorial e três repetições. As taxas de emissão de CH4 foram monitoradas em 19 eventos durante um ano (Fevereiro/2012 a Março/2013. Cerca de 75 dias após a incubação do solo com resíduos florestais verificou-se aumento das emissões de CH4, ocorrendo dois picos de emissão, aos 111 e aos 249 dias. A emissão acumulada de CH4 no primeiro ano de alagamento foi de 200 g C m-2 na dose zero, passando a valores próximos a 400 g C m-2 nas doses de 21,2 Mg ha-1 e maiores, não havendo efeito do tipo de resíduo, apenas da dose, como fator isolado.

  6. ARGAMASSA COM SUBSTITUIÇÃO DE AGREGADO NATURAL POR RESÍDUO DE BRITAGEM DE GRANITO

    Directory of Open Access Journals (Sweden)

    Robson Arruda dos Santos

    2012-10-01

    Full Text Available A indústria da construção civil consome muitos recursos naturais e é grande geradora de resíduos. Há uma grande problemática relacionada com o tratamento destes, sendo uma alternativa a sua reutilização como substituto de materiais naturais, por exemplo, na produção de argamassas e de concreto. Este trabalho tem como escopo estudar o reaproveitamento dos resíduos da britagem de granito como agregado em argamassa. Os resíduos foram ensaiados de acordo com as normas da ABNT para agregado miúdo utilizados na construção civil. Foram determinados dois traços com a substituição total da areia natural pelo resíduo em estudo e realizados ensaios de resistência nos corpos de prova, segundo a NBR 13279, bem como o estudo da influência do resíduo na aparência e no consumo de água. Constatou-se que a substituição refletiu positivamente na resistência à compressão e flexão da argamassa. Contudo, ressalta-se que para obter-se um agregado com bom desempenho é preciso classificar o material, sendo necessária a utilização de classificadores para se eliminar as frações mais finas e mais grossas possibilitando às suas aplicações um desempenho aceitável.

  7. Ka-band Technologies for Small Spacecraft Communications via Relays and Direct Data Downlink

    Science.gov (United States)

    Budinger, James M.; Niederhaus, Charles; Reinhart, Richard; Downey, Joe; Roberts, Anthony

    2016-01-01

    As the scientific capabilities and number of small spacecraft missions in the near Earth region increase, standard yet configurable user spacecraft terminals operating in Ka-band are needed to lower mission cost and risk and enable significantly higher data return than current UHF or S-band terminals. These compact Ka-band terminals are intended to operate with both the current and next generation of Ka-band relay satellites and via direct data communications with near Earth tracking terminals. This presentation provides an overview of emerging NASA-sponsored and commercially provided technologies in software defined radios (SDRs), transceivers, and electronically steered antennas that will enable data rates from hundreds of kbps to over 1 Gbps and operate in multiple frequency bands (such as S- and X-bands) and expand the use of NASA's common Ka-bands frequencies: 22.55-23.15 GHz for forward data or uplink; and 25.5-27.0 GHz for return data or downlink. Reductions in mass, power and volume come from integration of multiple radio functions, operations in Ka-band, high efficiency amplifiers and receivers, and compact, flat and vibration free electronically steered narrow beam antennas for up to + 60 degrees field of regard. The software defined near Earth space transceiver (SD-NEST) described in the presentation is intended to be compliant with NASA's space telecommunications radio system (STRS) standard for communications waveforms and hardware interoperability.

  8. Development of Methods for the Determination of pKa Values

    Science.gov (United States)

    Reijenga, Jetse; van Hoof, Arno; van Loon, Antonie; Teunissen, Bram

    2013-01-01

    The acid dissociation constant (pKa) is among the most frequently used physicochemical parameters, and its determination is of interest to a wide range of research fields. We present a brief introduction on the conceptual development of pKa as a physical parameter and its relationship to the concept of the pH of a solution. This is followed by a general summary of the historical development and current state of the techniques of pKa determination and an attempt to develop insight into future developments. Fourteen methods of determining the acid dissociation constant are placed in context and are critically evaluated to make a fair comparison and to determine their applications in modern chemistry. Additionally, we have studied these techniques in light of present trends in science and technology and attempt to determine how these trends might affect future developments in the field. PMID:23997574

  9. Diatom species composition in the Raška river (Southwestern Serbia

    Directory of Open Access Journals (Sweden)

    Vidaković Danijela P.

    2015-01-01

    Full Text Available The paper presents data on the composition of epilithic diatoms in the Raška River. Samples were collected by scraping stone surfaces with a brush from 5 localities along the Raška River in April, June, August and November 2011 and March and May 2012. Diatom frustules were cleaned using cold acid method, and mounted on permanent slides. An investigation of the Raška River resulted in description of 106 diatom taxa. The most species rich genera are Navicula (10, Gomphonema (10 and Nitzschia (9, while other genera are presented with one or more species. Detailed floristic analysis of the benthic diatom flora in this river has not been conducted before. Therefore, this paper provides a groundwork for future researches. [Projekat Ministarstva nauke Republike Srbije, br. TR 037009

  10. Ka-band microwave generation using the Smith-Purcell effect

    International Nuclear Information System (INIS)

    Ekdahl, C.A.; Davis, H.A.

    1983-01-01

    The CERETRON microwave generator concept relies on the conversion of intense relativistic electron beam (REB) energy into highpower microwave emission through the Smith-Purcell effect. We report initial results from experiments with the production of Ka-band Smith-Purcell radiation generated by a 50-kA, 2.8-MeV beam propagated through a cylindrical transmission grating with lambda 0 = 1 cm. These experiments were performed without a quasi-optical resonator, and the output was limited by breakdown of the grating and by limited access through the 90-kG magnet coil. Nevertheless, the measured power output from these initial experiments was about 7 kW in the Ka band

  11. Validation of SARAL/AltiKa data in the Amazon basin

    Science.gov (United States)

    Santos da Silva, Joecila; Calmant, Stephane; Medeiros Moreira, Daniel; Oliveira, Robson; Conchy, Taina; Gennero, Marie-Claude; Seyler, Frederique

    2015-04-01

    SARAL/AltiKa is a link between past missions (since it flies on the ERS-ENVISAT orbit with Ku band nadir altimeters in LRM) and future missions such as SWOT's Ka band interferometry swaths. In the present study, we compare the capability of its altimeter AltiKa to that of previous missions working in the Ku band such as ENVISAT and Jason-2 in retrieving water levels over the Amazon basin. Same as for the aforementioned preceding missions, the best results were obtained with the ICE-1 retracking algorithm. We qualitatively analyze the impact of rainfalls in the loss of measurements. Since making long -multi mission- time series is of major importance either for hydro-climatic studies or for basin management, we also present an estimate of the altimeter bias in order that the SARAL series of water level can be appended to those of these previous missions.

  12. pKa values in proteins determined by electrostatics applied to molecular dynamics trajectories.

    Science.gov (United States)

    Meyer, Tim; Knapp, Ernst-Walter

    2015-06-09

    For a benchmark set of 194 measured pKa values in 13 proteins, electrostatic energy computations are performed in which pKa values are computed by solving the Poisson-Boltzmann equation. In contrast to the previous approach of Karlsberg(+) (KB(+)) that essentially used protein crystal structures with variations in their side chain conformations, the present approach (KB2(+)MD) uses protein conformations from four molecular dynamics (MD) simulations of 10 ns each. These MD simulations are performed with different specific but fixed protonation patterns, selected to sample the conformational space for the different protonation patterns faithfully. The root-mean-square deviation between computed and measured pKa values (pKa RMSD) is shown to be reduced from 1.17 pH units using KB(+) to 0.96 pH units using KB2(+)MD. The pKa RMSD can be further reduced to 0.79 pH units, if each conformation is energy-minimized with a dielectric constant of εmin = 4 prior to calculating the electrostatic energy. The electrostatic energy expressions upon which the computations are based have been reformulated such that they do not involve terms that mix protein and solvent environment contributions and no thermodynamic cycle is needed. As a consequence, conformations of the titratable residues can be treated independently in the protein and solvent environments. In addition, the energy terms used here avoid the so-called intrinsic pKa and can therefore be interpreted without reference to arbitrary protonation states and conformations.

  13. Analysis of Cry8Ka5-binding proteins from Anthonomus grandis (Coleoptera: Curculionidae) midgut.

    Science.gov (United States)

    Nakasu, Erich Y T; Firmino, Alexandre A P; Dias, Simoni C; Rocha, Thales L; Ramos, Hudson B; Oliveira, Gustavo R; Lucena, Wagner; Carlini, Célia R; Grossi-de-Sá, Maria Fátima

    2010-07-01

    Biotech crops expressing Bacillus thuringiensis Cry toxins present a valuable approach for insect control. Cry8Ka5, which is highly toxic to the cotton boll weevil (Anthonomus grandis), was used as a model to study toxin-ligand interactions. Three Cry-binding proteins were detected after toxin overlay assays. Following de novo sequencing, a heat-shock cognate protein and a V-ATPase were identified, whilst a approximately 120 kDa protein remained unknown. Additional Cry8Ka5-binding proteins were visualized by two-dimensional gel electrophoresis ligand blots. (c) 2010 Elsevier Inc. All rights reserved.

  14. Thermal Runaway of the 13 kA Busbar Joints in the LHC

    OpenAIRE

    Verweij, A P

    2010-01-01

    Triggered by the incident in the LHC in September 2008, the thermo-electrical stability of the 10,000 soldered busbar joints in the 13 kA circuits of the LHC has been re-assessed. For this purpose the computer model QP3 has been developed. In this paper the results of some calculations are presented, and it is shown how the results have been used to improve the quench detection system and ensure safe future operation. First the layout of the 13 kA circuits, the geometry of the soldered joints...

  15. MARIJANSKA PUČKA BLAGDANSKA IMENA NA DUBROVAČKOM PODRUČJU

    OpenAIRE

    Vulić, Sanja

    2009-01-01

    U radu se opisuju pučka imena blagdana Gospe Karmelske, Gospe od Anđela, Gospina Pohoda sv. Elizabeti, Gospe od Krunice, Gospe Snježne, Gospe od Zdravlja, Gospe Lurdske, Gospe Fatimske, Imena Marijina, Gospe od Sedam Žalosti, Bezgrješnoga Začeća, Velike Gospe, Male Gospe i nekih lokalnih svetkovina. Uglavnom se razmatraju pučka blagdanska imena koja sam prikupila osobnim terenskim istraživanjem u samom gradu Dubrovniku, u Postranju u Župi dubrovačkoj, u Trpnju i Orebiću na Pelješcu te na otok...

  16. Kas kollaste kaartide lõpp toob lõpu ka lapsesoodustusele? / Jarno Laur

    Index Scriptorium Estoniae

    Laur, Jarno, 1975-

    2006-01-01

    Erastamisväärtpaberite väljaandmise ja kasutamise lõpetamise eelnõust, millega lõpetataks ka lastega seotud 25 000 kroonine hinnasoodustus maa väljaostmisel. Sama ka Vali Uudised 13. jaan. 2005, lk. 2 ; Kuulutaja 13. jaan. 2006, lk. 4 ; Põhjarannik 13. jaan. 2006, lk. 2 ; Lääne Elu 17. jaan. 2006, lk. 2 ; Nädaline 17. jaan. 2006, lk. 2 ; Hiiu Leht 17. jaan. 2006, lk. 2 ; Lõunaleht 19. jaan. 2006, lk. 2 ; Meie Maa 17. jaan. 2006, lk. 2 ; Vooremaa 21. jaan. 2006, lk. 2 ; Virumaa Nädalaleht 13. jaan. 2006, lk. 2 ; Valgamaalane 19. jaan. 2006, lk. 2

  17. Ingestão de resíduos antropogênicos por tartarugas marinhas no litoral norte do estado da Bahia, Brasil

    OpenAIRE

    Macedo,Gustavo Rodamilans; Pires,Thaís Torres; Rostán,Gonzalo; Goldberg,Daphne Wrobel; Leal,Danielle Custódio; Garcez Neto,Américo Fróes; Franke,Carlos Roberto

    2011-01-01

    Este trabalho descreve a presença de resíduos antropogênicos no trato digestório de tartarugas marinhas no Litoral Norte da Bahia, Brasil. Foram realizadas necropsias no trato digestório de 45 tartarugas marinhas encontradas mortas (Chelonia mydas n=36; Eretmochelys imbricata n=9), no período de janeiro de 2006 a outubro de 2007. Em 60% (27/45) das tartarugas necropsiadas foram encontrados resíduos, especialmente aqueles relacionados à atividade de pesca. Os resíduos encontravam-se ao longo d...

  18. Ingestão de resíduos antropogênicos por tartarugas marinhas no litoral norte do estado da Bahia, Brasil

    OpenAIRE

    Macedo, Gustavo Rodamilans; Pires, Thaís Torres; Rostán, Gonzalo; Goldberg, Daphne Wrobel; Leal, Danielle Custódio; Garcez Neto, Américo Fróes; Franke, Carlos Roberto

    2011-01-01

    p.1938-1943 Este trabalho descreve a presença de resíduos antropogênicos no trato digestório de tartarugas marinhas no Litoral Norte da Bahia, Brasil. Foram realizadas necropsias no trato digestório de 45 tartarugas marinhas encontradas mortas (Chelonia mydas n=36; Eretmochelys imbricata n=9), no período de janeiro de 2006 a outubro de 2007. Em 60% (27/45) das tartarugas necropsiadas foram encontrados resíduos, especialmente aqueles relacionados à atividade de pesca. Os resíduos enc...

  19. Análise normativa para descarte de resíduos de medicamentos - Estudo de caso da Região Sudeste do Brasil

    OpenAIRE

    Falqueto, Elda; Kligerman, Débora Cynamon

    2012-01-01

    O objetivo deste artigo é analisar aspectos normativos para o gerenciamento de resíduos de medicamentos numa região do Brasil e descrever os elementos fundamentais para a sua prática, valendo-se de exemplos bem-sucedidos e das principais políticas nacionais que norteiam o tema. Este trabalho analisa a legislação federal e da Região Sudeste em relação ao descarte de resíduos de medicamentos visando verificar em que medida as proposições legais contribuem para um gerenciamento eficaz de resíduo...

  20. Avaliação da viabilidade de reintegração de resíduos de PET pós-consumo ao meio produtivo

    OpenAIRE

    Tassio Francisco Lofti Matos

    2009-01-01

    Entre os materiais presentes nos resíduos sólidos domiciliares, os resíduos poliméricos pósconsumo representam cerca de 27% do volume total da coleta convencional, segundo Matos (2006), com o agravante da degradação lenta, comprometendo a vida útil dos aterros sanitários e poluindo o meio urbano. Dos resíduos poliméricos, destaca-se o Poli (tereftalato de etileno) PET. O PET é utilizado em embalagens alimentícias e, preferencialmente, no envasamento de bebidas carbonatadas e água mineral com...

  1. SEPARAÇÃO DE RESÍDUOS SÓLIDOS NO AMBIENTE ESCOLAR: FOMENTANDO A CONSCIÊNCIA AMBIENTAL

    Directory of Open Access Journals (Sweden)

    Ana Paula Sofa

    2017-07-01

    Full Text Available A gestão dos resíduos tem se tornado um grande desafio para as cidades. Partindo desta ideia, a reciclagem e a reutilização de materiais são ações que podem minimizar os problemas enfrentados, assim como o incentivo à mudança de atitudes e conscientização da população. A partir de um diagnóstico, constatou-se que os resíduos gerados na escola não recebem a destinação final adequada. Sendo assim iniciou-se um trabalho com a intenção de informar sobre a importância da separação de resíduos sólidos e reciclagem, praticar a reutilização e separação de materiais e registrar as informações discutidas no decorrer das aulas, sistematizando o conhecimento adquirido. Aplicaram-se as atividades em duas turmas, sendo uma do Ensino Fundamental e a outra da Educação Infantil. As ações propostas para as turmas assemelham-se, devido à proximidade da faixa etária, porém alguns dos resultados diferem, pois na turma do Ensino Fundamental percebeu-se maior compreensão acerca da importância da reciclagem e separação de resíduos. Outras ações envolveram a escola de modo geral, como a separação dos resíduos no refeitório e sala dos professores e exposição de cartazes nos espaços coletivos. Desse modo pretendeu-se contribuir com a ampliação do conhecimento dos alunos, favorecendo a multiplicação de informações para a comunidade em que estão inseridos, promovendo a destinação correta dos resíduos gerados por eles.

  2. Composição de resíduos de varrição e resíduos carreados pela rede de drenagem, em uma bacia hidrográfica urbana

    OpenAIRE

    Neves,Marllus Gustavo Ferreira Passos das; Tucci,Carlos Eduardo Morelli

    2011-01-01

    Apresentam-se aqui resultados de estudo sobre a composição física de resíduos sólidos de varrição e também daqueles vindos por uma rede de drenagem, em uma bacia hidrográfica urbana, identificando, dentre outros, influências da frequência do serviço de varrição e da época do ano. Os resíduos de varrição foram provenientes de várias partes do solo da bacia e os da rede de drenagem eram retirados de um poço de casa de bombas, para onde convergia todo o escoamento da rede. Alguns resultados inte...

  3. Co-constructing Appreciative Inquiry across disciplines: A duo-ethnography

    Directory of Open Access Journals (Sweden)

    Corinne Meier

    2017-03-01

    Research purpose: The aim of this study was for two AI practitioners, one in the field of Industrial and Organisational Psychology and one in Education, to partake in a collaborative study proceeding from reflection on the said researchers’ experiences with facilitating AI in different contexts. Motivation for the study: With social constructionism as a core principle underlying AI, it is argued that sharing experiences across disciplines could enrich the literature and the application of AI in different contexts. Research design, approach and method: The research is based on a qualitative, empirical, duo-ethnography using self-reflective narratives of the experiences of facilitating AI in cross-disciplinary contexts. Main findings: Reflecting on experiences in various disciplines lead to the co-construction of new knowledge. Not only were similar experiences supported, validated and extended, thus affirming the strength-based principle of AI, but it also provided the opportunity for disciplinary cross-fertilisation by combining different perspectives regarding the formality of the AI process and the extent of the facilitator’s and participants readiness to work with AI methodology. Practical/managerial implications: The formality of the AI process and hence the extent of the facilitator’s involvement (signalling his or her readiness to participate actively and take the lead in co-creating a new reality must be tempered by due allowance for the participant’s readiness to work with AI methodology. Furthermore, participants should be accommodated within the psychological space where they find themselves at the moment when the intended intervention is initiated. Contribution/value-add: Duo-ethnography provided the researchers with the opportunity to challenge the ‘other’ to reflect on their own discipline-related AI experiences, in a deeper, more relational and authentic way. The voices and ideas identified and presented counter narratives, also blended in

  4. Drastic lake level changes of Lake Van (eastern Turkey) during the past ca. 600 ka: climatic, volcanic and tectonic control

    Science.gov (United States)

    Cukur, D.; Krastel, S.; Schmincke, H.; Sumita, M.; Tomonaga, Y.; Damci, E.

    2013-12-01

    Lake Van is the largest soda lake in the world with a present surface of 3,574 km2 and a maximum water depth of 450 m. Sedimentary deposits in the lake preserve one of the most complete record of continental climate in the Middle East since the Middle Pleistocene. We studied these deposits to characterize the evolution of the lake level and its possible relationships with changes in climate, volcanic, and regional tectonics since the formation of the lake ca. 600 ka ago. Changes in lake level were determined based on high-resolution seismic reflection profiles showing erosional surfaces, changes in stratal geometries such as downward shifts in coastal onlap, and recognition of distinctive stratigraphic features such as prograding delta clinoforms. Our results show that Lake Van has undergone drastic changes in surface elevation by as much as 600 meters over the past ca. 600 ka. Five major lowstands occurred at ca. ~600 ka, ca. 365-340 ka, ca 290-230 ka; ca. 150-130 ka; and ca. 30-14 ka. During a first period (A) (ca. 600-ca 230 ka) lake levels changed drastically by hundreds of m but at longer time intervals between low and high stands. Changes occurred more frequently but mostly by a few tens of m during the past ca. 230 ka years where we can distinguish a first period (B1) of stepwise transgressions between ca. 230 and 150 ka followed by a short regression between ca. 150 and 130 ka. Lake level rose stepwise again during period B2 lasting until ca 30 ka. During the past 30 ka a regression and a final transgression each lasted ca. 15 ka years. The major lowstand periods in Lake Van occurred during glacial periods, arguing for a climatic control of these lake-level fluctuations (i.e., significantly reduced precipitation leading to lake level low stands). Although climate forcing may have been the dominant cause for the drastic lake level changes of Lake Van, volcanic and tectonic forcing factors are also invoked. For example, the number of distinct tephra layers

  5. Proposal for the Award of a Contract for the Supply of 13 kA and 20.5 kA, 18 V Switched-Mode Power Converters for the LHC

    CERN Document Server

    2003-01-01

    This document concerns the award of a contract for the supply of 13 kA and 20.5 kA, 18 V switched-mode power converters using sub-converters of 3.25 kA. Following a market survey (MS-2866/SL/LHC) carried out among 81 firms in seventeen Member States and a call for tenders for prototypes (IT-2919/SL/LHC) sent on 11 June 2001, a call for tenders for the supply of the pre-series and series of 13 kA and 20.5 kA, 18 V switched-mode power converters both using sub-converters of 3.25 kA was sent to two firms on 17 September 2002. The Finance Committee is invited to agree to the negotiation of a contract with TRANSTECHNIK (DE), the only firm that has delivered a successfully qualifying prototype, for the supply of eighteen 13 kA and one 20.5 kA, 18 V switched-mode power converters and spares for a total amount of 4 607 731 euros (6 747 300 Swiss francs), not subject to revision. The rate of exchange used is that stipulated in the tender. The firm has indicated the following distribution by country of the contract val...

  6. A problemática dos resíduos em sistemas gelificados para a limpeza de pinturas

    Directory of Open Access Journals (Sweden)

    Teresa Moreira Braga Teves Reis

    2012-12-01

    Full Text Available A limpeza de superfícies pictóricas com sistemas gelificados tem vindo a levantar diversas questões e opiniões contraditórias que se prendem com a deposição de resíduos de alguns componentes dos géis, nomeadamente os surfactantes, nas superfícies tratadas, e com potenciais riscos que ditos sistemas gelificados podem apresentar para os materiais constituintes das pinturas. Propôs-se neste artigo fazer uma revisão generalizada da informação já publicada acerca dos resíduos de géis, numa tentativa de informar outros colegas da profissão acerca deste assunto e assim fomentar tomadas de decisões mais esclarecidas relativamente a uma das operações que mais riscos apresenta para uma pintura: a sua limpeza.

  7. Modelo de valoração ambiental da reciclagem de resíduos sólidos urbanos

    OpenAIRE

    Lima, Guilherme Cardim Gouveia de

    2012-01-01

    gestão dos resíduos sólidos vem se tornando um tema cada vez mais relevante, uma vez que os espaços para disposição final do lixo nos centros urbanos são escassos e valorizados. A prática da reciclagem desponta como uma das melhores alternativas para a redução do volume de resíduos enviados aos lixões e aterros sanitários, ao mesmo tempo em que possibilita seu reaproveitamento, preservando os recursos naturais e gerando economia de energia. Como forma de promoção dessa prática,...

  8. A novel miniature superconducting converter for 1 kA magnets

    NARCIS (Netherlands)

    Chevtchenko, O.A.; Krooshoop, Hendrikus J.G.; ten Kate, Herman H.J.; Fedorovsky, Michael A.

    1996-01-01

    A miniature full-wave converter to control the current of a superconducting magnet is developed and tested in our institutes. Typical design values of the device are: AC voltage of 35 V, current of 7 A, and frequency 50-60 Hz; DC voltage o f f 0.2 V, and current of * 1 kA. An efficiency is better

  9. pKa Determination of water-soluble calix[4]arenes

    NARCIS (Netherlands)

    Shinkai, Seiji; Araki, Koji; Grootenhuis, P.D.J.; Reinhoudt, David

    1991-01-01

    Neutral, water-soluble 5,11,17,23-tetrakis[bis-(2-hydroxyethyl)aminosulphonyl]calix[4]arene-25,26,27,28-tetraol and 5,11,17,23-tetranitrocalix[4]arene-25,26,27,28-tetraol have been synthesized and the pKa values of the OH groups determined in an aqueous system.

  10. Dynamic optical fiber delivery of Ka-band packet transmissions for wireless access networks

    DEFF Research Database (Denmark)

    Rodríguez Páez, Juan Sebastián; Madsen, Peter; Tafur Monroy, Idelfonso

    2017-01-01

    A Reconfigurable Radio Access Unit is presented and experimentally demonstrated. In the unit, an optical switching system is set to dynamically deliver different packets to different points in the network. The packets are transmitted wirelesslty on the Ka-band (26–40 GHz), achieving BER values...

  11. Ettevõtja saab raha ka otse Brüsselist / Silva Männik

    Index Scriptorium Estoniae

    Männik, Silva, 1974-

    2004-01-01

    Lisaks mitmetele Eesti asutustele, mis alates sellest aastast EL-i struktuurifondide kaudu raha jagama hakkavad, on ettevõtjatel võimalik taotleda erinevate programmide kaudu raha ka otse EL-i eelarvest. Lisa: Otse saab raha taotleda mitmest programmist

  12. An integrated Ka/Ku-band payload for personal, mobile and private business communications

    Science.gov (United States)

    Hayes, Edward J.; Keelty, J. Malcolm

    1991-01-01

    The Canadian Department of Communications has been studying options for a government-sponsored demonstration payload to be launched before the end of the century. A summary of the proposed system concepts and network architectures for providing an advanced private business network service at Ku-band and personal and mobile communications at Ka-band is presented. The system aspects addressed include coverage patterns, traffic capacity, and grade of service, multiple access options as well as special problems, such as Doppler in mobile applications. Earth terminal types and the advanced payload concept proposed in a feasibility study for the demonstration mission are described. This concept is a combined Ka-band/Ku-band payload which incorporates a number of advanced satellite technologies including a group demodulator to convert single-channel-per-carrier frequency division multiple access uplink signals to a time division multiplex downlink, on-board signal regeneration, and baseband switching to support packet switched data operation. The on-board processing capability of the payload provides a hubless VSAT architecture which permits single-hop full mesh interconnectivity. The Ka-band and Ku-band portions of the payload are fully integrated through an on-board switch, thereby providing the capability for fully integrated services, such as using the Ku-band VSAT terminals as gateway stations for the Ka-band personal and mobile communications services.

  13. Müügiga kimpus majaomanikud otsivad samal ajal ka rentnikke / Kaire Talviste

    Index Scriptorium Estoniae

    Talviste, Kaire, 1979-

    2008-01-01

    Olukorrast eramute üüriturul: kinnisvaraportaalides on rendile pakkuda ligi paarsada maja, mida püütakse samal ajal ka edutult müüa, rendihinnad ulatuvad 30 000 - 50 000 kroonini kuus, eramuid üürivad peamiselt välismaalased

  14. Kas Roger Federer suudab Rafael Nadali alistada ka Pariisis? / Maarja Värv

    Index Scriptorium Estoniae

    Värv, Maarja

    2007-01-01

    Prantsusmaa lahtiste tennisemeistrivõistluste eel on paljude jaoks suurim küsimus, kas maailma esinumber Roger Federer suudab lõpuks võita ka Roland Garros' esikoha ning astuda sammu suure slämmi suunas. Vt. samas: Maret Ani põhiturniirile ei pääsenud

  15. Evaluation and Performance Analysis of 3D Printing Technique for Ka-Band Antenna Production

    DEFF Research Database (Denmark)

    Armendariz, Unai; Rommel, Simon; Rodríguez Páez, Juan Sebastián

    2016-01-01

    This paper presents the design and fabrication of 3D printed WR-28 waveguide horn antennas operating in the Ka-band frequency range between 26.5GHz and 40GHz. Three antennas are fabricated from polylactide acid filaments in conductive and non-conductive variants; the latter is covered...

  16. A role for icebergs in the 8.2 ka climate event

    NARCIS (Netherlands)

    Wiersma, A.P.; Jongma, J.I.

    2009-01-01

    We investigate the potential role of icebergs in the 8.2 ka climate event, using a coupled climate model equipped with an iceberg component. First, we evaluate the effect of a large iceberg discharge originating from the decaying Laurentide ice sheet on ocean circulation, compared to a release of an

  17. Geological conditions of origin of the Potočka zijalka cave

    Directory of Open Access Journals (Sweden)

    Stanko Buser

    2002-12-01

    Full Text Available In the Potočka zijalka cave on Mt. Ol{eva in Southern Karavanke during excavation of cave sediments of Würm age that contain cultural remains of the Cromagnon Man also large amounts of gravel were before the Badenian transgression, from the Central Alps during Miocene.

  18. Potential forcings of summer temperature variability of the southeastern Tibetan Plateau in the past 12 ka

    Science.gov (United States)

    Zhang, Enlou; Chang, Jie; Sun, Weiwei; Cao, Yanmin; Langdon, Peter; Cheng, Jun

    2018-06-01

    Investigating potential forcing mechanisms of terrestrial summer temperature changes from the Asian summer monsoon influenced area is of importance to better understand the climate variability in these densely populated regions. The results of spectral and wavelet analyses of the published chironomid reconstructed mean July temperature data from Tiancai Lake on the SE Tibetan Plateau are presented. The evidence of solar forcing of the summer temperature variability from the site on centennial timescales where key solar periodicities (at 855 ± 40, 465 ± 40, 315 ± 40 and 165 ± 40 year) are revealed. By using a band-pass filter, coherent fluctuations were found in the strength of Asian summer monsoon, Northern Hemisphere high latitude climate and high elevation mid-latitude (26°N) terrestrial temperatures with solar sunspot cycles since about 7.6 ka. The two abrupt cooling events detected from the Tiancai Lake record, centered at ∼9.7 and 3.5 ka were examined respectively. Coupled with the paleoclimate modeling results, the early Holocene event (9.7 ka) is possibly linked to an ocean-atmospheric feedback mechanism whereas the latter event (3.5 ka) may be more directly related to external forcing.

  19. Mahepõllumajandus : [1999-2004, ka ökomärgist] / Peeter Prass

    Index Scriptorium Estoniae

    Prass, Peeter

    2005-01-01

    Ilmunud ka: Agriculture and the development of rural life : overview 2004/2005. - Tallinn, 2005, lk.43-45. Hinnanguliselt moodustas 2004. a. mahepõllundusega hõivatud maa üldisest põllumajandusmaast alla 5%. Piimalehmadest olid maheloomad veidi üle 2%. Diagrammid

  20. Liha tootmine : [2000-2004 Eestis liikide kaupa, s.h. ka kitseliha] / Matti Piirsalu

    Index Scriptorium Estoniae

    Piirsalu, Matti, 1947-

    2005-01-01

    Ilmunud ka: Agriculture and the development of rural life : overview 2004/2005. - Tallinn, 2005, lk. 20-22. 2004. a. vähenes sealihatoodang 3%, lamba- ja kitseliha toodang 25%.Veise- ja linnuliha tootmine kasvas kubki 5%. Tabel: Lihatoodang aastatel 2000-2004

  1. Damaška and the faces of international criminal justice

    NARCIS (Netherlands)

    Swart, B.

    2008-01-01

    Mirjan Damaška 's scholarly publications provide important insights for the analysis of systems of criminal justice at the international level. This is particularly true for his major book: The Faces of Justice and State Authority - A Comparative Approach to the Legal Process. The book develops

  2. High Current, Low Voltage Power Converter [20kA, 6V] LHC Converter Prototype

    CERN Document Server

    Jørgensen, H E; Dupaquier, A; Fernqvist, G

    1998-01-01

    The superconducting LHC accelerator requires high currents (~12.5kA) and relatively low voltages (~10 V) for its magnets. The need to install the power converters underground is the driving force for reduced volume and high efficiency. Moreover, the LHC machine will require a very high level of performance from the power converters, particularly in terms of DC stability, dynamic response and also in matters of EMC. To meet these requirements soft-switching techniques will be used. This paper describes the development of a [20kA,6V] power converter intended as a stable high-current source for D CCT calibration and an evaluation prototype for the future LHC converters. The converter is made with a modular concept with five current sources [4kA,6V] in parallel. The 4kA sources are built as plu g-in modules: a diode rectifier on the AC mains with a damped L-C passive filter, a Zero Voltage Switching inverter working at 20 kHz and an output stage (high frequency transformers, Schottky rectifi ers and output filter...

  3. Saja aasta asemel saaks maantee valmis ka kümnega / Jarno Laur

    Index Scriptorium Estoniae

    Laur, Jarno, 1975-

    2006-01-01

    Ilmunud ka: Järva Teataja 9. märts lk. 2. Riigikogu liige sotsiaaldemokraatide fraktsiooni poolt Riigikogu menetlusse antud Tallinna-Tartu-Luhamaa maantee ehitamise otsuse eelnõust, otsuse vastuvõtmise vajalikkusest ning tee-ehituse rahastamisest

  4. Ac loss measurements on a superconducting transformer for a 25 kA superconducting rectifier

    NARCIS (Netherlands)

    ten Kate, Herman H.J.; Mulders, J.M.; de Reuver, J.L.; van de Klundert, L.J.M.

    1984-01-01

    Ac loss measurements have been performed on a superconducting transformer. The transformer is a part of a 25 kA thermally switched superconducting rectifier operating at a frequency of 0.1 Hz. The loss measurements have been automatized by means of a microcomputer sampling four relevant signals and

  5. Kolem Patočkovy politiky duchovního člověka

    Czech Academy of Sciences Publication Activity Database

    Chvatík, Ivan

    2015-01-01

    Roč. 70, č. 6 (2015), s. 458-464 ISSN 0046-385X Institutional support: RVO:67985955 Keywords : philosophy * upswing to the political * meaning * history * solidarity of the shaken * Patočka Subject RIV: AA - Philosophy ; Religion

  6. Design considerations on a sparse array antenna for Ka-band spaceborne SAR applications

    NARCIS (Netherlands)

    Jacobs, S.; Bekers, D.; Monni, S.; Otten, M.; Van Rossum, W.; Gerini, G.; Germani, C.; Fortini, D.; Toso, G.

    2015-01-01

    This contribution addresses the problem of designing a sparse active array antenna for spaceborne SAR applications at Ka-band. The main driver for the design is limiting the recurring manufacturing costs associated to the number of active modules, while preserving main performance and insuring a

  7. Maailma esimene online-maakler teenindab ka eesti keeles / Romet Kreek

    Index Scriptorium Estoniae

    Kreek, Romet, 1972-

    2005-01-01

    Maailma esimene online-maaklerfirma E*Trade avas eestikeelse kauplemiskeskkonna, kuhu lähikuudel lisandub võimalus kaubelda ka Eesti aktsiatega. Tabel: E*Trade pakub konkurentsi kohalikele maakleritele. Kommenteerib Peeter Koppel. Vt. samas: Lauri Matsulevitsh. LHV konkurenti ei karda

  8. Muusikamaailm : "Passioon 2000" Stuttgardis. Ojai festivalilt. Boulez dirigeerib ka Edinburghis. Placido Domingo Helsingis / Priit Kuusk

    Index Scriptorium Estoniae

    Kuusk, Priit, 1938-

    2000-01-01

    Stuttgardi Rahvusvahelisel Bachi Akadeemia korraldataval Euroopa muusikafestivalil ettekandele tulevatest "tänapäevastest passioonidest". Ojai muusikafestivalist Jaapanis. P. Boulezi 75. sünnipäevale pühendatud kontserdisari "Boulez 2000" jõudis ka Edinburghi festivalile. P. Domingo kontserdist Helsingi olümpiastaadionil, K. Mattila kontserdist Helsingi Areenal

  9. Tallinna info- ja abitelefon toetab ka hättasattunud lapsi / Hille Tänavsuu

    Index Scriptorium Estoniae

    Tänavsuu, Hille, 1941-2014

    2006-01-01

    Vt. ka Postimees : na russkom jazõke 16. jaan., lk. 5. Infotelefoni projektijuhi Herve Merivaldi sõnul ei sõanda lapsed lastekaitsetöötaja või politsei poole pöörduda. Abitelefonile helistades aitavad dispetsherid neil ühendust saada inimestega, kes neid aidata võivad

  10. Efficient Aerobic Oxidation of Cyclohexane to KA Oil Catalyzed by Pt ...

    Indian Academy of Sciences (India)

    127, No. 7, July 2015, pp. 1167–1172. c Indian Academy of Sciences. ... The catalyst was used for the partial oxidation of cyclohexane in a Parr type reactor. It was found that Pt-Sn supported on MWCNTs can act as an efficient catalyst for the partial ... version ratio with high selectivity for KA oil in a liquid ... These gases.

  11. Internetiside VoIP sobib ka ettevõtteile / Valdur Laid

    Index Scriptorium Estoniae

    Laid, Valdur, 1969-

    2005-01-01

    Ilmunud ka: Delovõje Vedomosti 8. juuni lk. 19. Kommunikatsiooni liikumisest internetti ehk IP-võrku ning selle võimalustest ettevõtjaile. Vt. samas: Väikefirmade IP-lahendus jõuab aasta lõpus massturule

  12. Motivos de um indivíduo para praticar atividades físico-esportivas

    Directory of Open Access Journals (Sweden)

    Carlos Alberto de Andrade Coelho Filho

    2013-09-01

    Full Text Available Este estudo objetiva investigar os motivos de um indivíduo para aderir à prática regular de atividades físico-esportivas. É um estudo de caso qualitativo que emerge do interesse pelos aspectos intrínsecos de um caso particular. O instrumento utilizado para coleta de dados foi a entrevista. Tendo em vista a análise e a interpretação dos dados coletados, concluímos que: (1 a prática de atividades físico-esportivas pode estar associada a motivos que não são representados, isto é, a impulsos que permanecem obscuros; (2 o sujeito pratica regularmente atividades físico-esportivas porque com ela se sente mais consciente dos seus limites, de sua potência e de sua estética; (3 sua prática regular está associada à identificação com atividades físico-esportivas variadas; (4 o sujeito pratica-as regularmente, porque associa essa prática a um remédio saudável, porque mexer com o corpo é brincar com o corpo; (5 o sujeito pratica regularmente atividades físico-esportivas porque as qualidades da imaginação o confortam e a ilusão o acolhe e o move.

  13. INOVAÇÃO NO USO DE RESÍDUO DA INDÚSTRIA SUCROALCOOLEIRA

    Directory of Open Access Journals (Sweden)

    João Batista Sarmento dos Santos Neto

    2014-12-01

    Full Text Available O desenvolvimento sustentável associado à solução de problemas que prejudicam de alguma maneira a sociedade é um assunto que merece destaque e abordagem ampla em pesquisas acadêmicas. A utilização de materiais alternativos buscando soluções para os problemas ocasionados pelo ruído procura, ao mesmo tempo, oferecer conforto e comodidade para o meio urbano, além de ser uma alternativa para destinação final de resíduos sólidos produzidos por demais setores da economia. Desta forma, o presente estudo tem o objetivo de desenvolver enchimento alternativo para drywall utilizando fibra residual do setor sucroalcooleiro com a finalidade de buscar condicionamento acústico. Após produção do material pesquisado, foi realizado o ensaio para a determinação do desempenho acústico por meio da Perda de Transmissão Sonora (TL, onde foram comparados os valores obtidos de TL do painel de drywall com o enchimento pesquisado, com painéis drywall com enchimentos de lã de vidro e ar. Ao fim dos ensaios, pode-se concluir que o painel com enchimento pesquisado obteve resultados superiores aos comparados quando analisado em baixas frequências.

  14. Theoretical Studying the Cyclic Loading of Electric Drive Parts of the Stand duo-160

    Directory of Open Access Journals (Sweden)

    A. A. Maltsev

    2015-01-01

    Full Text Available An electric drive of work rolls of the single-stand rolling mill duo-160 located in the laboratory of Bauman Moscow State Technical University (BMSTU is selected as an object of the theoretical study. After the work rolls have gripped the work-piece the torsional vibrations occur in the drive; a 5-mass dynamic model is built to determine their forms and frequencies. Equations of torsionalvibration movement of masses with time are based on the Lagrange equations of type II. The paper identifies intrinsic moments of inertia and angular stiffness of parts and units of the electric drive. The graphs of the moments of elastic forces are built taking into consideration the dampers and backlashes. A revealed transition process has shown that given amplitudes of the cyclic shear stresses arising in dangerous section of the most loaded top spindle do not exceed the limit of its endurance in this section. In case of excess revealed, it would lead to accumulation of fatigue damage in the spindle metal and to formation of fatigue crack that most probably would appear near the shaft surface rather than in the metal mass. With further using the electric drive this micro-crack would be gradually evolved into macro-crack, the working cross-sectional area of the shaft would be reduced so that there would be a spindle failure and on the surface of a fatigue fracture of its shaft a strongly marked crack growth zone and a completely broken zone would be observed.

  15. ECOEMPREENDEDORISMO E COMPETÊNCIAS EMPREENDEDORAS: O CASO ECOEMPREENDEDOR TRANSFORMADOR DE RESÍDUO EM RIQUEZA

    Directory of Open Access Journals (Sweden)

    Stêvenis Moacir Moura da Fonseca

    2015-04-01

    Full Text Available Este estudo visa evidenciar as competências empreendedoras mais presentes no ecoempreendedor que inova na criação de produto que destina corretamente os resíduos de óleo de fritura usado, transformando-os em riqueza, sobretudo por sua contribuição ao meio ambiente através da reciclagem, contribuindo diretamente para a promoção de uma sociedade sustentável. Vale salientar que as observações das características empreendedoras se deram sob a perspectiva das competências empreendedoras descritas por McClelland, além de enfoques do empreendedorismo em recente literatura. Nesse sentido, foi necessário um contato direto com o empreendedor, na sua empresa. Uma entrevista semiestruturada foi realizada com o empreendedor e os resultados apresentados foram obtidos através das informações oriundas da aplicação de um questionário respondido pelo mesmo. Através desse estudo de caso, chegou-se à conclusão que todas as competências foram identificadas, sobretudo busca de oportunidades, iniciativa e busca de informações.

  16. Maturação de Compostos Orgânicos de Resíduos Agroindustriais

    Directory of Open Access Journals (Sweden)

    Rafaela Alves Pereira

    2013-07-01

    Full Text Available Os resíduos agroindustriais geralmente apresentam grandes concentrações de materiais orgânicos que, se manejados de forma inadequada, podem poluir e/ou contaminar o solo, a água e o ar. A técnica de compostagem tem se mostrado um processo eficiente na busca pela minimização da problemática ambiental associada aos resíduos orgânicos e na redução do volume de resíduos descartados em lixões e aterros sanitários. O principal objetivo deste trabalho consiste na utilização de parâmetros físico-químicos para verificar a maturação de compostos orgânicos obtidos a partir de resíduos agroindustriais da região de Pombal, um município localizado no semiárido paraibano. Para obtenção dos compostos orgânicos, cascas de bananas, estercos ovinos e podas de marmeleiro e jurema-preta foram triturados e misturados para montar duas pilhas de compostagem, sendo uma depositada em solo compactado e outra sobre um pátio pavimentado com concreto. Os parâmetros utilizados na avaliação da maturação foram: temperatura, relação C/N, condutividade elétrica, pH e demanda química de oxigênio. Os resultados sugerem que os compostos orgânicos estudados estão maturados, indicando que estes simples métodos são considerados seguros para verificação de processos de compostagem conduzidos em regiões sujeitas às condições semiáridas. 

  17. EFEITO DA BANDAGEM FUNCIONAL NO MÚSCULO RETO FEMORAL EM INDIVÍDUOS HEMIPARÉTICOS ESPÁSTICOS

    Directory of Open Access Journals (Sweden)

    Andressa Caroline Machuca Felix

    2017-05-01

    Full Text Available A bandagem funcional, é o nome dado a um tipo de banda adesiva desenvolvida no Japão em 1973, por Kenzo Kase. O paciente que tem como sequela à Hemiparesia espástica apresenta seus músculos rígidos e fracos. Objetivos: O objetivo principal do trabalho é observar o efeito da fita de bandagem elástica no músculo reto femoral em pacientes com sequela de Hemiparesia espástica, e aferir seu torque antes e após aplicação com o Dinamômetro isocinético computadorizado Cybex® (Biodex System®. Metodologia: Foi selecionado um grupo de 6 indivíduos com idade entre 40-80 anos, que apresentam sequelas de hemiparesia espástica. Neles foram avaliados a força do músculo reto femoral, em seguida estes indivíduos foram subdivididos em dois grupos. No Grupo 1: Em 3 indivíduos foi aplicada bandagem de forma inibitória no músculo reto femoral; No Grupo 2: Em 3 indivíduos foi aplicada a bandagem para ativação no músculo reto femoral. Resultados: Foi evidenciado estatisticamente um aumento no valor da porcentagem na média da avaliação inicial e a avaliação final de forma inibitória em aproximadamente 1,84% e, de forma ativa em aproximadamente 9,81%.

  18. PROPOSTA DE TRATAMENTO ALTERNATIVO PARA RESÍDUOS SÓLIDOS URBANOS NA CIDADE DE UBERLÂNDIA – MG

    Directory of Open Access Journals (Sweden)

    Caroline Ferreira de Morais

    2014-12-01

    Full Text Available O aterro sanitário é o principal meio de disposição final para os resíduos sólidos urbanos de Uberlândia. Alternativas, além das que estão em desenvolvimento no município, precisam ser pensadas já que o aterramento é uma opção com grandes impactos ao meio ambiente. Sendo assim, essa pesquisa tem como objetivo desenvolver uma proposta para a cidade de Uberlândia com uma nova alternativa de tratamento de resíduos sólidos urbanos que não priorize o seu aterramento e que traga maiores ganhos socioambientais. A metodologia consistiu em trabalhos de campo, levantamentos bibliográficos e referenciais, o qual baseou a elaboração da proposta com a adoção da tecnologia do Projeto Natureza Limpa, desenvolvido por uma empresa particular, localizada no município de Unaí – MG. A escolha da tecnologia teve como requisitos aquela que não priorizasse o aterramento de resíduos sólidos urbanos em seu processo. Portanto, os resultados são diminuição de emissões de gases de efeito estufa, aproveitamento do potencial energético da biomassa, retorno de matéria-prima ao mercado produtivo e ainda diminuição ou extinção de impactos ambientais decorrentes da má disposição dos resíduos. Consequentemente, os ganhos sociais se pautam na melhoria da saúde ambiental e o uso pela governança municipal de saldos creditícios positivos em benefício comum.

  19. A reciclagem de resíduos plásticos pós-consumo em oito empresas do Rio Grande do Sul

    OpenAIRE

    Aline Marques Rolim

    2000-01-01

    O tema do presente estudo é a reciclagem de resíduos plásticos pós-consumo. Resíduos pósconsumo são resíduos provenientes do descarte de produtos pelos consumidores A sua reciclagem permite a recuperação do seu valor econômico, através do seu reaproveitamento como matéria-prima, e a redução do volume de resíduos a serem dispostos em aterros, contribuindo para o desenvolvimento sustentável. Além disso, esta atividade tende a crescer, uma vez que o consumo do plástico vem aumentando no Brasil, ...

  20. Gerenciamento de resíduos sólidos industriais em uma empresa de usinagem sobre o enfoque da produção mais limpa

    OpenAIRE

    Juliana Simião

    2011-01-01

    As atividades industriais geram resíduos sólidos, de diferentes características e quantidades, que precisam ser gerenciados adequadamente para não causar poluição ambiental e danos à saúde do homem. A Lei n.o 12.305/2010, que institui a Política Nacional dos Resíduos Sólidos, estabelece a seguinte ordem de prioridade no gerenciamento dos resíduos: não geração, redução, reutilização, reciclagem, tratamento dos resíduos e disposição final ambientalmente adequada dos rejeitos. A adoção destas es...

  1. Indivíduos celestes: cristianismo e parentesco em um grupo nativo da Amazônia

    Directory of Open Access Journals (Sweden)

    Aparecida Vilaça

    2007-07-01

    Full Text Available Esse artigo parte da oposição entre sociedades individualistas e relacionais desenvolvida por Joel Robbins para a análise do conflito gerado pela adoção do cristianismo entre os Urapmin da Papua Nova Guiné. No caso dos Wari' amazônicos, a percepção aguda da centralidade da noção de indivíduo no cristianismo a eles apresentado, e do conflito potencial entre esta noção e os valores relacionais de sua sociedade, os levou ao engenhoso descolamento desses indivíduos para o mundo póstumo, situando-os em um céu constituído por hiper-indivíduos, sem qualquer relação entre si.This article sets out from the opposition between individualist and relational societies developed by Joel Robbins in his analysis of the conflict generated by the adoption of Christianity among the Urapmin of Papua New Guinea. In the case of the Amazonian Wari', their acute perception of the centrality of the notion of the individual in the version of Christianity presented to them, and the potential conflict between this notion and the relational values of their own society, led them to the ingenious solution of dislocating these individuals to the posthumous world, situating them in a heaven of hyper-individuals without any relationship to each other.

  2. Examination of a duo-collection optics design for the Korea superconducting tokamak advanced research (KSTAR) Thomson scattering system

    International Nuclear Information System (INIS)

    Oh, Seungtae; Lee, Jong Ha

    2011-01-01

    The comparison of collective optic designs is described for the Thomson scattering system of the Korea superconducting tokamak advanced research (KSTAR) device. The optical systems collecting the light emission induced through the interaction between the plasma electrons and a laser beam are the key components for the Thomson scattering system. In the first conceptual design of the collection optics for the KSTAR Thomson scattering system, a duo-lens system covering individually the core and the edge regions of the KSTAR plasma with two optical lens modules was proposed. In optical designs, the number of optical modules is a great concern in the case of limited system space. Here, the duo-lens system is evaluated through a comparison with a uni-lens system covering the whole region of the plasma with a single optical module. The duo-lens system turned out to have 2.0 times and 4.73 times higher light collections of the plasma core and edge compared with the uni-lens system

  3. A 25 kA, 2T, 78 kJ, 52 litre superconducting test coil. Strength calculations and construction

    NARCIS (Netherlands)

    ten Kate, Herman H.J.; Holtslag, A.H.M.; Knoben, J.; Steffens, H.A.; van de Klundert, L.J.M.

    1983-01-01

    Within the scope of our research program for a 25 kA superconducting rectifier, we have built a 25 kA s.c. coil being a single layer solenoid with a bore of 0.45 meter and a volume of 52 litre. The starting point for the design was to avoid any metallic structural material. This unique coil consists

  4. Maksude tõstmine lööb nii ettevõtlust kui ka tavalist inimest / Mirko Ojakivi

    Index Scriptorium Estoniae

    Ojakivi, Mirko

    2008-01-01

    Konjunktuuriinstituudi direktori Marje Josingu sõnul halvendaks maksutõus nii ettevõtluse konkurentsivõimet kui ka inimeste võimet eluga toime tulla, ka maksumaksjate liidu esimees Lasse Lehis peab maksude tõstmist valeks, eriti vale oleks tema väitel tõsta käibemaksu

  5. Morphotectonic control of the Białka drainage basin (Central Carpathians: Insights from DEM and morphometric analysis.

    Directory of Open Access Journals (Sweden)

    Wołosiewicz Bartosz

    2016-06-01

    Full Text Available The Białka river valley is directly related to a deep NNW-SSE oriented fault zone. According to the results of previous morphometric analyses, the Białka drainage basin is one of the most tectonically active zones in the Central Carpathians. It is also located within an area of high seismic activity.

  6. Reconstruction of the eruptive activity on the NE sector of Stromboli volcano: timing of flank eruptions since 15 ka

    NARCIS (Netherlands)

    Calvari, S.; Branca, S.; Corsaro, R.A.; De Beni, E.; Miraglia, L.; Norini, G.; Wijbrans, J.R.; Boschi, E.

    2011-01-01

    A multidisciplinary geological and compositional investigation allowed us to reconstruct the occurrence of flank eruptions on the lower NE flank of Stromboli volcano since 15 ka. The oldest flank eruption recognised is Roisa, which occurred at ~15 ka during the Vancori period, and has transitional

  7. Risk Assessment of Mineral Groundwater Near Rogaška Slatina

    Science.gov (United States)

    Trcek, Branka; Leis, Albrecht

    2017-10-01

    Groundwater resources of mineral and thermo-mineral water are invaluable for planning a sustainable spatial and economic development of the Rogaška Slatina area, which requires a protection of this natural heritage. Numerous previous investigations of Rogaška groundwaters were subjects to balneology and to demands for larger exploitation quantities, that is why information are missing that are essential for definition of the Rogaška fractured aquifer system with mineral and thermo-mineral water and for its protection. The isotopic investigations of groundwaters stored in the Rogaška Slatina fractured aquifer system were performed aiming at answering open questions on the groundwater recharge and dynamics, on connections between different types of aquifers and on solute transport. Environmental isotopes 2H, 18O, 3H, 13C of dissolved inorganic carbon and 14C were analysed in mineral, thermo-mineral and spring waters. Results indicated the source and mechanism of groundwater recharge, its renewability, a transit time distribution, hydraulic interrelationships, the groundwater origin and its evolution due to effects of water-rock interaction. The mean residence time estimates of mineral and thermo- mineral water in the aquifer are between 3400 and 14000 years. On the other hand, the mixing processes between younger and older waters or mineral and spring waters are reflected as well as waters that infiltrated predominantly after the 1960s. These suggest the vulnerability of the research systems to man-made impacts. The presented results coupled with available information on a physical hydrogeology and water chemistry asses the optimal balance between the environmental protection and economic use of mineral water resources in the study area. They are essential for the protection strategy development of mineral and thermo-mineral water in the Rogaška Slatina area bringing together the state administration and local authorities and stakeholders.

  8. KaBOB: ontology-based semantic integration of biomedical databases.

    Science.gov (United States)

    Livingston, Kevin M; Bada, Michael; Baumgartner, William A; Hunter, Lawrence E

    2015-04-23

    The ability to query many independent biological databases using a common ontology-based semantic model would facilitate deeper integration and more effective utilization of these diverse and rapidly growing resources. Despite ongoing work moving toward shared data formats and linked identifiers, significant problems persist in semantic data integration in order to establish shared identity and shared meaning across heterogeneous biomedical data sources. We present five processes for semantic data integration that, when applied collectively, solve seven key problems. These processes include making explicit the differences between biomedical concepts and database records, aggregating sets of identifiers denoting the same biomedical concepts across data sources, and using declaratively represented forward-chaining rules to take information that is variably represented in source databases and integrating it into a consistent biomedical representation. We demonstrate these processes and solutions by presenting KaBOB (the Knowledge Base Of Biomedicine), a knowledge base of semantically integrated data from 18 prominent biomedical databases using common representations grounded in Open Biomedical Ontologies. An instance of KaBOB with data about humans and seven major model organisms can be built using on the order of 500 million RDF triples. All source code for building KaBOB is available under an open-source license. KaBOB is an integrated knowledge base of biomedical data representationally based in prominent, actively maintained Open Biomedical Ontologies, thus enabling queries of the underlying data in terms of biomedical concepts (e.g., genes and gene products, interactions and processes) rather than features of source-specific data schemas or file formats. KaBOB resolves many of the issues that routinely plague biomedical researchers intending to work with data from multiple data sources and provides a platform for ongoing data integration and development and for

  9. Análise do discurso de indivíduos afásicos fluentes e com leve dificuldade de compreensão oral

    Directory of Open Access Journals (Sweden)

    Juliana Silveira Ferreira de Medeiros

    Full Text Available RESUMO: Objetivo: analisar os discursos narrativo, descritivo, conversacional e procedural de indivíduos afásicos fluentes e compará-los com indivíduos saudáveis. Métodos: foram selecionados, por meio de amostragem sistemática, 22 indivíduos afásicos fluentes com queixas de dificuldade discursiva e que apresentam alteração de linguagem pós-acometimento em Sistema Nervoso Central decorrente de Acidente Vascular Encefálico, que estão ou já estiveram em tratamento na instituição de origem. Estes foram pareados a indivíduos saudáveis de mesma idade e escolaridade e ambos os grupos foram submetidos a um protocolo de tarefas discursivas orais para avaliação dos discursos narrativo, explicativo, conversacional e procedural. Resultados: houve diferenças estatisticamente significantes na maioria das variáveis investigadas em todos os tipos de discursos tanto na análise quantitativa quanto na qualitativa. Conclusão: indivíduos afásicos apresentaram maior facilidade no discurso narrativo e maior dificuldade nos demais discursos, porém comparando-os aos indivíduos saudáveis apresentaram maior dificuldade em todos os gêneros discursivos orais.

  10. Germinação carpogênica de Sclerotinia sclerotiorum sob diferentes resíduos e extratos de plantas cultivadas

    Directory of Open Access Journals (Sweden)

    Francimar Perez Matheus da Silva

    2011-09-01

    Full Text Available Os efeitos de resíduos de plantas cultivadas e seus extratos sobre Sclerotinia sclerotiorum são poucos conhecidos. Três experimentos foram conduzidos, com resíduos de plantas cultivadas e seus extratos etanólicos e suas partições. Resíduos e extratos de culturas de aveia, ervilhaca, feijão, milheto, milho e trigo foram avaliados em condições controladas. Escleródios cobertos com resíduos de aveia, ervilhaca, feijão e milheto não germinaram carpogenicamente. Extratos etanólicos de resíduos de aveia e ervilhaca mostraram-se eficientes na inibição da germinação carpogênica, enquanto que do milheto e do trigo não diferiram da testemunha. Todas as partições de extratos etanólicos avaliadas reduziram a germinação carpogênica. Resíduos vegetais afetaram negativamente o número de apotécios emitidos por escleródio.

  11. Eolian depositional phases during the past 50 ka and inferred climate variability for the Pampean Sand Sea, western Pampas, Argentina

    Science.gov (United States)

    Tripaldi, Alfonsina; Forman, Steven L.

    2016-05-01

    The Pampean Sand Sea, which occurs from the Argentinian Pampas to the eastern Andean piedmont, hosts presently stabilized dune fields spanning the late Quaternary. This study integrates previous results and presents new geomorphic, stratigraphic, sedimentological, and chronologic data for nineteen >2 m-thick eolian successions for the San Luis paleo-dune field, western Pampas, to better constrain the depositional history. Six eolian depositional phases are identified spanning the past 50 ka, interposed with paleosols and/or bounded by erosive surfaces. Age control was from 61 OSL ages of small aliquots of quartz grains from eolian stratigraphic units. The inferred timing of eolian phases are at ca. 70 ± 10 yr, 190 ± 20 yr, 12 to 1 ka, 22 to 17 ka, 29 to 24 ka, and 40 to 32 ka. A maximum span for periods of pedogenesis at ca. 12 to 17 ka, 22 to 24 ka, and 29 to 32 ka was provided by bounding OSL ages, which broadly overlap with high stands of pluvial lakes and glacier advances in the central Andes. We infer that the added precipitation may reflect expansion of the Southern Hemisphere monsoon, associated with Northern Hemisphere Heinrich events, leading to episodes of significantly wetter conditions (>350 mm MAP) to at least 35° S. Most of the Holocene (12 ka to 0.8 ka) was characterized by sand sheet deposit under drier than present conditions (100-450 mm MAP), associated with Monte-type vegetation (shrub steppe). The latest two eolian depositional phases, occurred at ca. 190 and 70 yr ago, during the historic period with European settlement and are related to anthropogenic landscape disturbance, though the youngest phase was concomitant with 1930s drought. Wet conditions dominated since ca. AD 1970 with new lakes and rivers forming across this eolian terrain; an incongruous environmental response in reference to drier conditions for most of the Holocene.

  12. MONITORAMENTO DOS PARÂMETROS FÍSICO-QUÍMICOS NA COMPOSTAGEM DE RESÍDUOS AGROINDUSTRIAIS

    Directory of Open Access Journals (Sweden)

    Talita Dantas Pedrosa

    2013-11-01

    Full Text Available Os processos de compostagem têm se estabelecido como formas eficientes de minimizar a problemática ambiental e de reduzir o volume de resíduos sólidos orgânicos descartados. Esse trabalho tem como objetivos monitorar o processo de compostagem de resíduos agroindustriais e avaliar a qualidade do composto final com base na Portaria N° 01/83 do Ministério da Agricultura, Pecuária e Abastecimento. Para  isso foram montadas  pilhas  de resíduos agroindustriais em solo exposto com monitoramento dos parâmetros: temperatura, pH, sólidos voláteis, umidade e relação C/N. Ao final da compostagem  foi avaliado a qualidade do composto produzido, o qual  alcançou parcialmente os requisitos mínimos exigidos pela legislação brasileira, mostrando-se eficiente para o tratamento de resíduos agroindustriais.Palavra-chave: resíduos orgânicos, matéria orgânica, meio ambiente.MONITORING OF PHYSICAL AND CHEMICAL PARAMETERS IN AGROINDUSTRIAL WASTE COMPOSTING ABSTRACTThe composting processes have been established as an effective way to minimize the environmental problems and reduce the volume of organic solid waste disposed. This study aimed to monitor the composting process of agroindustrial wastes and evaluate the final product quality. For this were assembled stacks of agroindustrial residues in exposed soil to monitoring the parameters as: temperature, pH, volatile solids, moisture and C/N ratio. At the end of composting was rated the quality of the produced compost  and its partially achieved the minimum required by Brazilian law, being effective for the treatment of industrial residues.Keywords: organic waste, organic matter, environmental. DOI: http://dx.doi.org/10.14583/2318-7670.v01n01a08

  13. Impacto do manejo dos resíduos da colheita, do preparo do solo e da adubação na produtividade de eucalipto

    Directory of Open Access Journals (Sweden)

    Frederico Alfenas Silva Valente Paes

    2013-08-01

    Full Text Available Tem sido cada vez maior a preocupação das empresas do setor florestal em adotar práticas pautadas na conservação do solo e da água. Nesse sentido, este trabalho teve por objetivo avaliar o impacto do manejo dos resíduos da colheita, do preparo do solo e do uso de resíduos industriais, na fertilidade do solo e produtividade de eucalipto. O experimento foi iniciado após o corte raso de um plantio comercial de EUCALYPTUS GRANDIS, onde os resíduos da colheita foram manejados (retirada de todo o resíduo; remoção da casca e dos galhos com diâmetro superior a 3,0 cm; e manutenção de todos os resíduos na superfície do solo. Em seguida, realizaram-se o preparo do solo (com subsolador de uma e três hastes, a aplicação dos resíduos industriais (resíduo de celulose e cinzas na superfície do solo e o plantio de mudas de EUCALYPTUS GRANDIS X E. UROPHYLLA Foi utilizado o delineamento em blocos ao acaso, contendo oito tratamentos e quatro repetições. Os tratamentos consistiram da combinação dos diferentes tipos de manejo dos resíduos da colheita, preparo do solo e aplicação dos resíduos industriais. Cada parcela experimental foi composta por cinco linhas com 19 plantas cada. Aos 83 meses após o plantio, foram medidos o DAP (diâmetro à altura do peito e a altura das árvores, para cálculo do volume de madeira. A fertilização e a manutenção dos resíduos da colheita florestal elevaram os teores de Ca2+ e Mg2+ trocáveis no solo. A manutenção total dos resíduos vegetais na área após a colheita resultou em aumento de 71,7 m³ ha-1 de madeira, quando comparado à remoção de todos os resíduos. Não houve diferença entre os modos de preparo do solo com subsolador de uma e três hastes, quanto ao volume de madeira. Os maiores volumes de madeira foram obtidos dos tratamentos que receberam as maiores quantidades de resíduo de celulose e cinzas, ao mesmo tempo em que foi mantida parte do resíduo vegetal após a colheita

  14. Revalidation and rationale for high pKa values of unconjugated bilirubin

    Directory of Open Access Journals (Sweden)

    Ostrow J Donald

    2007-05-01

    Full Text Available Abstract Background Our prior solvent partition analysis, published in 1992, yielded pKa values for unconjugated bilirubin of about 8.1 and 8.4, but these results have been challenged and studies by other methods have suggested pKa values below 5.0. Methods We repeated our published solvent partition studies, using 14C-unconjugated bilirubin highly purified by extraction of residual labeled impurities from CHCl3 into an aqueous buffer, pH 7.0. Partition ratios at six pH values from 5.0 to 9.0 were determined by radioassay and compared with our prior values obtained by diazo assay. Results At pH values ranging from 4.8 to 9.2, stable aqueous/chloroform 14C-partition ratios did not differ significantly from our published partition ratios based on diazo assay. Conclusion These results support the high pKa values of unconjugated bilirubin, above 8.0, derived from our earlier solvent partition study. In both studies, our measurements were based on the rapid analysis of clearly under-saturated solutions of highly-purified bilirubin over a wide pH range, using properly purified and preserved solvents. No previous direct estimate of the aqueous pKa values of unconjugated bilirubin meets all these preconditions. Three theoretical factors acting in combination, each related to the unique, extensive internal H-bonding of the -COOH groups, are proposed to support high pKa values of unconjugated bilirubin in water: a donation of an H-bond from the -OH moiety of the -COOH group, which is broken on ionization; b hindered solvation of the -COO- group after ionization; and c restricted rotation of the -COO- and -COOH groups. Our findings and rationale rebut methodological and theoretical criticisms leveled against our prior work. High pKa values for unconjugated bilirubin dictate that: a bilirubin diacid, which readily diffuses across membranes and can cause neurotoxicity, is the dominant unbound bilirubin species of unconjugated bilirubin in plasma at

  15. DECOMPOSIÇÃO DE RESÍDUOS DE CULTURAS E MINERALIZAÇÃO DE NUTRIENTES EM SOLO COM DIFERENTES TEXTURAS

    Directory of Open Access Journals (Sweden)

    Henrique José Guimarães Moreira Maluf

    2015-12-01

    Full Text Available RESUMO A sustentabilidade dos sistemas conservacionistas de produção agrícola está intimamente ligada ao retorno dos nutrientes ao solo, por meio da decomposição dos resíduos vegetais. O objetivo deste estudo foi avaliar a decomposição de resíduos culturais e a mineralização de nutrientes em solos com diferentes texturas ao longo de 175 dias de incubação. Os tratamentos consistiram em fatorial 6 x 4 x 5, inicialmente composto por seis tratamentos, sendo quatro resíduos culturais: milho, braquiária, feijão, estilosantes e dois controles, ambos sem resíduo e um com adição de fontes inorgânicas dos nutrientes; quatro diferentes texturas formadas a partir de um mesmo solo e cinco tempos de avaliação após o início da incubação: 0, 25, 75, 125 e 175 dias. Utilizou-se delineamento inteiramente casualizado, com quatro repetições. Ao longo do experimento, avaliaram-se a liberação de C-CO2, taxa de decomposição e cinética de mineralização do N, P, K, Ca, Mg, S, Zn e Cu dos resíduos. A textura do solo não influenciou a liberação de C-CO2, a massa seca remanescente e a mineralização dos nutrientes dos resíduos culturais. Os resíduos de estilosantes e de braquiária apresentaram maior liberação de C-CO2 e redução de massa seca que os demais resíduos. A mineralização do N, P e S ocorreu de forma inversa às relações C/N, C/P e C/S. A decomposição dos resíduos culturais foi regulada pelos teores de N e extrativos solúveis em água; e a mineralização de macronutrientes, pelos seus respectivos conteúdos iniciais nos resíduos.

  16. Resíduos culturais e resultado de análise de solo coletado com diferentes amostradores no sistema de plantio direto

    Directory of Open Access Journals (Sweden)

    Escosteguy Pedro Alexandre Varella

    2005-01-01

    Full Text Available Uma das características do sistema de plantio direto é o acúmulo de resíduos culturais na superfície do solo. Embora as recomendações técnicas preconizem a remoção desses resíduos antes da amostragem de solo, isso não ocorre quando a amostragem é efetuada utilizando o quadriciclo. Os resíduos culturais também podem ser misturados com a amostra de solo quando esse é amostrado com o trado manual e esses resíduos não são removidos da superfície do solo. Neste trabalho, estudou-se a influência dos resíduos culturais da superfície do solo nos resultados da análise de solo sob plantio direto. Amostraram-se solos com e sem a remoção de resíduos culturais da superfície. Esses procedimentos foram testados em solos contendo baixo e alto teor de argila, amostrados com o trado calador e o quadriciclo, após o cultivo de soja e milho. A influência dos resíduos culturais no resultado da análise de solo foi, em geral, pouco expressiva, variando com o tipo de amostrador, de resíduo e teor de argila do solo. Nas amostras coletadas com o quadriciclo, foi possível detectar diferenças no teor de matéria orgânica (MO em função dos procedimentos de amostragem testados, entretanto, isso não ocorreu nas amostras coletadas com o calador. Na presença dos resíduos culturais, o teor de MO aumentou em 4g kg-1 (solo com baixo teor de argila e cultivado com soja e em 5g kg-1 (solo com alto teor de argila e cultivado com milho. Com exceção dos teores de MO, a presença dos resíduos culturais não interferiu na interpretação dos outros atributos analisados.

  17. Efeito dos resíduos de café seco e fermentado por Monascus ruber no metabolismo de camundongos Apo E

    Directory of Open Access Journals (Sweden)

    Larissa Froede Brito

    2012-08-01

    Full Text Available FUNDAMENTO: A aterosclerose é uma doença inflamatória crônica de origem multifatorial que ocorre em resposta à agressão endotelial. O fungo Monascus ruber apresenta atividade hipocolesterolêmica e polifenóis presentes no resíduo de café apresentam atividade antioxidante, podendo auxiliar na prevenção de doenças cardiovasculares. O resíduo de café possui quantidade significativa de açúcares fermentescíveis, constituindo-se em substrato apropriado para o cultivo de fungos. OBJETIVO: O objetivo deste estudo foi avaliar o efeito dos resíduos de café seco e fermentado por Monascus ruber no metabolismo lipídico de camundongos knockout Apo E. MÉTODOS: O ensaio biológico foi realizado com 30 camundongos knockout para o gene Apo E, divididos em cinco grupos e submetidos a diferentes tratamentos. Foi realizada a prospecção fitoquímica e quantificação de compostos fenólicos dos resíduos fermentado e sem fermentar. O soro dos animais foi analisado utilizando kits enzimáticos e o tecido aórtico incluso em parafina e corado com H/E para realização da análise histopatológica. RESULTADOS: O resíduo de café sem fermentar 2%, em relação ao grupo controle, diminuiu em 42% o nível sérico de triacilgliceróis e em aproximadamente 41% a fração VLDL-c. Os grupos dos animais alimentados com 10% de resíduo não fermentado e 2% de resíduo fermentado diminuíram a área de lesão 10,5% e 15,4%, respectivamente, quando comparados ao controle. O resíduo fermentado apresentou um teor de compostos fenólicos superior ao resíduo não fermentado. CONCLUSÃO: O presente estudo mostra que a fermentação do resíduo de café apresenta potencial efeito benéfico sobre as doenças cardiovasculares, especialmente a aterosclerose.

  18. Hidrocarbonetos policíclicos aromáticos em resíduos sólidos industriais: uma avaliação preliminar do risco potencial de contaminação ambiental e humana em áreas de disposição de resíduos

    Directory of Open Access Journals (Sweden)

    Cristina L. S. Sisinno

    Full Text Available A disposição adequada dos resíduos sólidos é importante para evitar que os mesmos se transformem em fonte de contaminação ambiental e humana. A NBR 10.004 - Classificação de Resíduos - lista vários hidrocarbonetos policíclicos aromáticos (HPAs e indica que, a presença de pelo menos um deles na massa bruta do resíduo é suficiente para classificá-lo como resíduo perigoso. O objetivo deste estudo foi verificar a presença de HPAs em amostras de resíduos sólidos provenientes de alguns segmentos industriais, para se obter uma avaliação preliminar do potencial de contaminação que estes resíduos podem representar, caso não recebam destino adequado. Pelo menos um dos HPAs previstos na NBR 10.004 (benzo[a]antraceno, benzo[a]pireno, benzo[b]fluoranteno, benzo[k]fluoranteno, indeno[1,2,3-c,d]pireno, criseno ou fluoranteno foi identificado em todos os resíduos estudados, classificando-os como perigosos. Nossos resultados indicam que todos os resíduos estudados continham HPAs de importância toxicológica, o que implica que sua disposição final seja feita em locais adequados para minimizar os riscos à saúde humana e ambiental oriundos das áreas de disposição de resíduos.

  19. Hidrocarbonetos policíclicos aromáticos em resíduos sólidos industriais: uma avaliação preliminar do risco potencial de contaminação ambiental e humana em áreas de disposição de resíduos

    Directory of Open Access Journals (Sweden)

    Sisinno Cristina L. S.

    2003-01-01

    Full Text Available A disposição adequada dos resíduos sólidos é importante para evitar que os mesmos se transformem em fonte de contaminação ambiental e humana. A NBR 10.004 - Classificação de Resíduos - lista vários hidrocarbonetos policíclicos aromáticos (HPAs e indica que, a presença de pelo menos um deles na massa bruta do resíduo é suficiente para classificá-lo como resíduo perigoso. O objetivo deste estudo foi verificar a presença de HPAs em amostras de resíduos sólidos provenientes de alguns segmentos industriais, para se obter uma avaliação preliminar do potencial de contaminação que estes resíduos podem representar, caso não recebam destino adequado. Pelo menos um dos HPAs previstos na NBR 10.004 (benzo[a]antraceno, benzo[a]pireno, benzo[b]fluoranteno, benzo[k]fluoranteno, indeno[1,2,3-c,d]pireno, criseno ou fluoranteno foi identificado em todos os resíduos estudados, classificando-os como perigosos. Nossos resultados indicam que todos os resíduos estudados continham HPAs de importância toxicológica, o que implica que sua disposição final seja feita em locais adequados para minimizar os riscos à saúde humana e ambiental oriundos das áreas de disposição de resíduos.

  20. A Novel Low-cost, Ka-band, High Altitude, Multi-Baseline Unmanned Aerial Vehicle Sensor for Surface Water Ocean Topography, Phase II

    Data.gov (United States)

    National Aeronautics and Space Administration — This proposal presents the Ka-band SWOT Phenomenology Airborne Radar (KaSPAR) to support the surface water ocean topography (SWOT) mission for science and algorithm...

  1. Food safety assessment of Cry8Ka5 mutant protein using Cry1Ac as a control Bt protein.

    Science.gov (United States)

    Farias, Davi Felipe; Viana, Martônio Ponte; Oliveira, Gustavo Ramos; Santos, Vanessa Olinto; Pinto, Clidia Eduarda Moreira; Viana, Daniel Araújo; Vasconcelos, Ilka Maria; Grossi-de-Sa, Maria Fátima; Carvalho, Ana Fontenele Urano

    2015-07-01

    Cry8Ka5 is a mutant protein from Bacillus thuringiensis (Bt) that has been proposed for developing transgenic plants due to promising activity against coleopterans, like Anthonomus grandis (the major pest of Brazilian cotton culture). Thus, an early food safety assessment of Cry8Ka5 protein could provide valuable information to support its use as a harmless biotechnological tool. This study aimed to evaluate the food safety of Cry8Ka5 protein following the two-tiered approach, based on weights of evidence, proposed by ILSI. Cry1Ac protein was used as a control Bt protein. The history of safe use revealed no convincing hazard reports for Bt pesticides and three-domain Cry proteins. The bioinformatics analysis with the primary amino acids sequence of Cry8Ka5 showed no similarity to any known toxic, antinutritional or allergenic proteins. The mode of action of Cry proteins is well understood and their fine specificity is restricted to insects. Cry8Ka5 and Cry1Ac proteins were rapidly degraded in simulated gastric fluid, but were resistant to simulated intestinal fluid and heat treatment. The LD50 for Cry8Ka5 and Cry1Ac was >5000 mg/kg body weight when administered by gavage in mice. Thus, no expected relevant risks are associated with the consumption of Cry8Ka5 protein. Copyright © 2015 Elsevier Ltd. All rights reserved.

  2. pKa-critical Interpretations of Solubility–pH Profiles: PG 300995 and NSC-639829 Case Studies

    Directory of Open Access Journals (Sweden)

    George Butcher

    2015-07-01

    Full Text Available Two weak bases, PG-300995 (anti-HIV agent and NSC-639829 (anti-tumor agent, whose log S – pH profiles had been previously published, but whose pKa values had not been reported, were analyzed using a method which can determine pKa values from log S – pH data. This “SpH-pKa” technique, although often practiced, can result in inaccurate pKa values, for a variety of reasons. The operational SpH-pKa values were compared to those predicted by MarvinSketch (ChemAxon, ADMET Predictor (Simulation Plus, and ACD/Percepta (ACD/Labs. The agreement for the sparingly-soluble PG-300995 was reasonably good. However, a substantial difference was found for the practically-insoluble NSC-639829. To probe this further, the pKa of NSC‑639829 was measured by an independent spectrophotometric cosolvent technique. The log S - pH profile of NSC-639829 was then re‑analyzed with the independently-measured pKa. It was found that the equilibrium model which best fit the solubility data is consistent with the presence of a monocationic NSC-639829 dimeric species below pH 4. This illustrates that an independently-determined accurate pKa is critical to mechanistic interpretations of solubility-pH data. Apparently, the Henderson-Hasselbalch equation holds for PG-300995, but not NSC-639829.

  3. ATLAS operations in the GridKa T1/T2 Cloud

    International Nuclear Information System (INIS)

    Duckeck, G; Serfon, C; Walker, R; Harenberg, T; Kalinin, S; Schultes, J; Kawamura, G; Leffhalm, K; Meyer, J; Nderitu, S; Olszewski, A; Petzold, A; Sundermann, J E

    2011-01-01

    The ATLAS GridKa cloud consists of the GridKa Tier1 centre and 12 Tier2 sites from five countries associated to it. Over the last years a well defined and tested operation model evolved. Several core cloud services need to be operated and closely monitored: distributed data management, involving data replication, deletion and consistency checks; support for ATLAS production activities, which includes Monte Carlo simulation, reprocessing and pilot factory operation; continuous checks of data availability and performance for user analysis; software installation and database setup. Of crucial importance is good communication between sites, operations team and ATLAS as well as efficient cloud level monitoring tools. The paper gives an overview of the operations model and ATLAS services within the cloud.

  4. New tests on the 40 kA Nb3Sn CEA conductor for ITER applications

    International Nuclear Information System (INIS)

    Duchateau, J.L.; Bessette, D.; Katheder, H.

    1994-01-01

    New tests have been performed on the 40 kA CEA Nb 3 Sn conductor in the Sultan III facility. The aim of these tests is to obtain key experimental data on the behaviour of Nb 3 Sn conductors for fusion applications under high field and large transport current. The 40 kA Nb 3 Sn CEA conductor has a shape and an internal arrangement of the superconducting wires which is very similar to the ITER conductors. The level of the ac losses experienced by these conductors under varying fields influences deeply their design. The basic experiment consists of producing field pulses on the conductor by means of a coil installed in the bore of the Sultan magnet and recording the integrated voltage obtained on pick-up coils placed on the conductor as a function of time. (author) 4 refs.; 5 figs.; 2 tabs

  5. Reconfigurable phased antenna array for extending cubesat operations to Ka-band: Design and feasibility

    Science.gov (United States)

    Buttazzoni, G.; Comisso, M.; Cuttin, A.; Fragiacomo, M.; Vescovo, R.; Vincenti Gatti, R.

    2017-08-01

    Started as educational tools, CubeSats have immediately encountered the favor of the scientific community, subsequently becoming viable platforms for research and commercial applications. To ensure competitive data rates, some pioneers have started to explore the usage of the Ka-band beside the conventional amateur radio frequencies. In this context, this study proposes a phased antenna array design for Ka-band downlink operations consisting of 8×8 circularly polarized subarrays of microstrip patches filling one face of a single CubeSat unit. The conceived structure is developed to support 1.5 GHz bandwidth and dual-task missions, whose feasibility is verified by proper link budgets. The dual-task operations are enabled by a low-complexity phase-only control algorithm that provides pattern reconfigurability in order to satisfy both orbiting and intersatellite missions, while remaining adherent to the cost-effective CubeSat paradigm.

  6. Comparison of excitotoxic profiles of ATPA, AMPA, KA and NMDA in organotypic hippocampal slice cultures

    DEFF Research Database (Denmark)

    Kristensen, Bjarne Winther; Noraberg, J; Zimmer, J

    2001-01-01

    ) values was found after 2 days of exposure: AMPA (3.7 mM)>NMDA (11 mM)=KA (13 mM)>ATPA (33 mM). Exposed to 30 microM ATPA, 3 microM AMPA and 10 microM NMDA, CA1 was the most susceptible subfield followed by fascia dentata and CA3. Using 8 microM KA, CA3 was the most susceptible subfield, followed...... by fascia dentata and CA1. In 100 microM concentrations, all four agonists induced the same, maximal PI uptake in all hippocampal subfields, corresponding to total neuronal degeneration. Using glutamate receptor antagonists, like GYKI 52466, NBQX and MK-801, inhibition data revealed that AMPA excitotoxicity...

  7. Test results of the 18 kA EDIPO HTS current leads

    International Nuclear Information System (INIS)

    Wesche, Rainer; Bagnasco, Maurizio; Bruzzone, Pierluigi; Felder, Roland; Guetg, Marc; Holenstein, Manuel; Jenni, Markus; March, Stephen; Roth, Felix; Vogel, Martin

    2011-01-01

    For the new test facility EDIPO (European DIPOle), to be hosted by CRPP, two 18 kA HTS current leads were manufactured and successfully tested. The HTS module, made of AgMgAu/Bi-2223 tapes, is cooled only by heat conduction to the cold end, while the copper part is cooled by forced flow helium gas. The current leads were tested at low voltage up to the maximum current of 18 kA. The helium mass flow rates required for stable operation at various currents were determined. In addition to the steady state operation, the transient behavior in the case of a loss of flow was studied experimentally. The test results provide an estimate of the operational limits of the EDIPO HTS current leads.

  8. Nonlinear electrostatic emittance compensation in kA, fs electron bunches

    International Nuclear Information System (INIS)

    Geer, S.B. van der; Loos, M.J. de; Botman, J.I.M.; Luiten, O.J.; Wiel, M.J. van der

    2002-01-01

    Nonlinear space-charge effects play an important role in emittance growth in the production of kA electron bunches with a bunch length much smaller than the bunch diameter. We propose a scheme employing the radial third-order component of an electrostatic acceleration field, to fully compensate the nonlinear space-charge effects. This results in minimal transverse root-mean-square emittance. The principle is demonstrated using our design simulations of a device for the production of high-quality, high-current, subpicosecond electron bunches using electrostatic acceleration in a 1 GV/m field. Simulations using the GPT code produce a bunch of 100 pC and 73 fs full width at half maximum pulse width, resulting in a peak current of about 1.2 kA at an energy of 2 MeV. The compensation scheme reduces the root-mean-square emittance by 34% to 0.4π mm mrad

  9. Ka-band InSAR Imaging and Analysis Based on IMU Data

    Directory of Open Access Journals (Sweden)

    Shi Jun

    2014-02-01

    Full Text Available Compared with other bands, the millimeter wave Interferometric Synthetic Aperture Radar (InSAR has high accuracy and small size, which is a hot topic in InSAR research. On the other hand, shorter wavelength causes difficulties in 2D imaging and interferometric phase extraction. In this study, the imaging and phase performance of the streaming Back Projection (BP method combined with IMU data are analyzed and discussed on the basis of actual Ka-band InSAR data. It is found that because the wavelength of the Ka-band is short, it is more sensitive to the antenna phase-center history. To ensure the phase-preserving capacity, the IMU data must be used with accurate motion error compensation. Furthermore, during data processing, we verify the flat-earth-removing capacity of the BP algorithm that calculates and compensates the master and slave antenna phase centers individually.

  10. Test results of the 18 kA EDIPO HTS current leads

    Energy Technology Data Exchange (ETDEWEB)

    Wesche, Rainer, E-mail: rainer.wesche@psi.ch [Ecole Polytechnique Federale de Lausanne (EPFL), Centre de Recherches en Physique des Plasmas (CRPP), Association Euratom - Confederation Suisse, 5232 Villigen PSI (Switzerland); Bagnasco, Maurizio; Bruzzone, Pierluigi; Felder, Roland; Guetg, Marc; Holenstein, Manuel; Jenni, Markus; March, Stephen; Roth, Felix; Vogel, Martin [Ecole Polytechnique Federale de Lausanne (EPFL), Centre de Recherches en Physique des Plasmas (CRPP), Association Euratom - Confederation Suisse, 5232 Villigen PSI (Switzerland)

    2011-10-15

    For the new test facility EDIPO (European DIPOle), to be hosted by CRPP, two 18 kA HTS current leads were manufactured and successfully tested. The HTS module, made of AgMgAu/Bi-2223 tapes, is cooled only by heat conduction to the cold end, while the copper part is cooled by forced flow helium gas. The current leads were tested at low voltage up to the maximum current of 18 kA. The helium mass flow rates required for stable operation at various currents were determined. In addition to the steady state operation, the transient behavior in the case of a loss of flow was studied experimentally. The test results provide an estimate of the operational limits of the EDIPO HTS current leads.

  11. Predicting the pKa and stability of organic acids and bases at an oil-water interface.

    Science.gov (United States)

    Andersson, M P; Olsson, M H M; Stipp, S L S

    2014-06-10

    We have used density functional theory and the implicit solvent model, COSMO-RS, to investigate how the acidity constant, pKa, of organic acids and bases adsorbed at the organic compound-aqueous solution interface changes, compared to its value in the aqueous phase. The pKa determine the surface charge density of the molecules that accumulate at the fluid-fluid interface. We have estimated the pKa by comparing the stability of the protonated and unprotonated forms of a series of molecules in the bulk aqueous solution and at an interface where parts of each molecule reside in the hydrophobic phase and the rest remains in the hydrophilic phase. We found that the pKa for acids is shifted by ∼1 pH unit to higher values compared to the bulk water pKa, whereas they are shifted to lower values by a similar amount for bases. Because this pKa shift is similar in magnitude for each of the molecules studied, we propose that the pKa for molecules at a water-organic compound interface can easily be predicted by adding a small shift to the aqueous pKa. This shift is general and correlates with the functional group. We also found that the relative composition of molecules at the fluid-fluid interface is not the same as in the bulk. For example, species such as carboxylic acids are enriched at the interface, where they can dominate surface properties, even when they are a modest component in the bulk fluid. For high surface concentrations of carboxylic acid groups at an interface, such as a self-assembled monolayer, we have demonstrated that the pKa depends on the degree of deprotonation through direct hydrogen bonding between protonated and deprotonated acidic headgroups.

  12. Determination of pKa values of diastereomers of phosphinic pseudopeptides by CZE

    Czech Academy of Sciences Publication Activity Database

    Koval, Dušan; Kašička, Václav; Jiráček, Jiří; Collinsová, Michaela

    2006-01-01

    Roč. 27, č. 23 (2006), s. 4648-4657 ISSN 0173-0835 R&D Projects: GA ČR(CZ) GA203/04/0098; GA ČR(CZ) GA203/05/2539 Institutional research plan: CEZ:AV0Z40550506 Keywords : diastereomer separation * phosphinic pseudopeptides * pKa determination Subject RIV: CC - Organic Chemistry Impact factor: 4.101, year: 2006

  13. Prediction of pKa values using the PM6 semiempirical method

    Directory of Open Access Journals (Sweden)

    Jimmy C. Kromann

    2016-08-01

    Full Text Available The PM6 semiempirical method and the dispersion and hydrogen bond-corrected PM6-D3H+ method are used together with the SMD and COSMO continuum solvation models to predict pKa values of pyridines, alcohols, phenols, benzoic acids, carboxylic acids, and phenols using isodesmic reactions and compared to published ab initio results. The pKa values of pyridines, alcohols, phenols, and benzoic acids considered in this study can generally be predicted with PM6 and ab initio methods to within the same overall accuracy, with average mean absolute differences (MADs of 0.6–0.7 pH units. For carboxylic acids, the accuracy (0.7–1.0 pH units is also comparable to ab initio results if a single outlier is removed. For primary, secondary, and tertiary amines the accuracy is, respectively, similar (0.5–0.6, slightly worse (0.5–1.0, and worse (1.0–2.5, provided that di- and tri-ethylamine are used as reference molecules for secondary and tertiary amines. When applied to a drug-like molecule where an empirical pKa predictor exhibits a large (4.9 pH unit error, we find that the errors for PM6-based predictions are roughly the same in magnitude but opposite in sign. As a result, most of the PM6-based methods predict the correct protonation state at physiological pH, while the empirical predictor does not. The computational cost is around 2–5 min per conformer per core processor, making PM6-based pKa prediction computationally efficient enough to be used for high-throughput screening using on the order of 100 core processors.

  14. Quench Propagation in the Superconducting 6 kA Flexible Busbars of the LHC

    OpenAIRE

    Calvi, M; Herzog, R; Pelegrin-Carcelen, J M; Sonnemann, F

    2001-01-01

    Flexible superconducting cables with currents up to 6 kA will be used to power magnets individually in the insertion regions of the LHC. In case of a quench, the currents in these circuits will decay very fast (with time constants of about 200 ms) such that relatively small copper cross sections are sufficient for these busbars. Quench propagation experiments on a prototype cable and corresponding simulations led to a detailed understanding of the quench behavior of these busbars and to recom...

  15. A K/Ka band radiating element for Tx/Rx phased array

    KAUST Repository

    Sandhu, Ali Imran; Arnieri, E.; Amendola, G.; Boccia, L.; Meniconi, E.; Ziegler, V.

    2017-01-01

    The paper presents a K/Ka band radiating element for TX/RX phased arrays. Dual band operations is obtained using a single radiating surface: a novel radiator is adopted and placed in a configuration in which dual band and single band elements are interleaved. The array elements are optimized to scan the beam in excess of 50° in both bands. A subarray with 49 Rx elements and 105 Tx elements was built and measured confirming the results obtained in simulations.

  16. Pöffi filme näeb ka Ida-Virumaal

    Index Scriptorium Estoniae

    2005-01-01

    Avatakse IX Pimedate Ööde Filmifestivali põhiprogramm, millest osa linastub ka Jõhvis ja Narvas. Lisatud PÖFFi programm Narva kultuurikeskuses Rugodiv ja dokumentaalfilmi "Sügavas kurgus" tutvustus : režissöörid Fenton Bailey, Randy Barbato : Ameerika Ühendriigid 2005. Film käsitleb 1972.a. kurikuulsa pornofilmi "Sügav kurk" ("Deep Throat") fenomeni

  17. Rimi toob Eesti liha lettidele ka Poola kaudu / Urmas Jaagant, Agnes Ojala

    Index Scriptorium Estoniae

    Jaagant, Urmas

    2010-01-01

    Lihatootjate ja Poolas asuvat pakendamiskeskust pidava Hilton Foodsi vahel jätkuvad läbirääkimised, et sõlmida ekspordilepingud. Hilton Foods töötleb ja pakendab nii Eesti kui ka teiste riikide liha ning müüb selle Rimi kaubamärgi all Leedu, Läti, Ungari, Eesti jt. riikide poodidele. Rimi turundusjuhi Evelin Mägioja selgitusi

  18. Töötaja leiab ka miinimumpalgaga / Ralf-Martin Soe

    Index Scriptorium Estoniae

    Soe, Ralf-Martin

    2007-01-01

    Ilmunud ka: Delovõje Vedomosti 31. okt. lk. 6. Madalate palkade TOP 10. Vt. samas: Küsimustele vastab Helter-R-i tegevjuht Kalev Kivipalu; Madal palk toob kaela maksuameti luubi alla sattumise; Endised töötajad: Helter-R-is sain palka osaliselt sulas; Tagant teine: suur juveelitootja - keskmine palk 3400 krooni kuus; Tagant kolmas koht: maksuamet uuris väikseid palku; Tabel. Kommenteerib Ruth Laatre

  19. Žumberačka Gora – Transformation from a Refuge to an Exodus Zone

    OpenAIRE

    Crkvenčić, Ivan

    2002-01-01

    This article provides an analysis of the problem of immigration from Žumberačka gora, a highland region that lies on the border between Croatia and Slovenia. Due consideration is given to its border-zone character, basic features and later colonization during the mid-sixteenth century. A dual social organization and even social relations emerged in the region, reflecting the contrast between the Military Frontier and the civilian portion. The consequences of long settlement and secondary colo...

  20. A K/Ka band radiating element for Tx/Rx phased array

    KAUST Repository

    Sandhu, Ali Imran

    2017-01-20

    The paper presents a K/Ka band radiating element for TX/RX phased arrays. Dual band operations is obtained using a single radiating surface: a novel radiator is adopted and placed in a configuration in which dual band and single band elements are interleaved. The array elements are optimized to scan the beam in excess of 50° in both bands. A subarray with 49 Rx elements and 105 Tx elements was built and measured confirming the results obtained in simulations.

  1. Resíduos sólidos em um sistema de drenagem urbana no município de Santa Maria (RS

    Directory of Open Access Journals (Sweden)

    Delmira Beatriz Wolff

    2016-03-01

    Full Text Available RESUMO Com o crescimento da população e o consequente aumento da urbanização, o lançamento de resíduos sólidos nos sistemas de drenagem urbana tem aumentado nos últimos anos, principalmente nas regiões periféricas das cidades. Este estudo teve como objetivo qualificar e quantificar os resíduos sólidos no arroio Cancela-Tamandai, localizado em área urbana, no município de Santa Maria (RS. Foram coletados ao todo 1.153,2 kg de resíduos sólidos com uma precipitação pluviométrica total para o período de novembro de 2012 a janeiro de 2013 de 518,94 mm, sendo, desses, 93,9% composto por matéria orgânica, sendo a maioria vegetação. O arroio Cancela-Tamandai apresentou uma carga de resíduos sólidos igual a 17,27 ou 0,424 kg.hab-1.ano-1. A curva de previsão de resíduos sólidos orgânicos drenados em função da precipitação pluviométrica apresentou correlação de 76,4%, um parâmetro importante para a tomada de decisão dos gestores municipais em relação aos resíduos sólidos gerados. Assim, conceber estratégias para o monitoramento desses resíduos representa passo importante na busca de soluções que visem um melhor gerenciamento de bacias hidrográficas urbanas.

  2. Olyset Duo® (a pyriproxyfen and permethrin mixture net: an experimental hut trial against pyrethroid resistant Anopheles gambiae and Culex quinquefasciatus in Southern Benin.

    Directory of Open Access Journals (Sweden)

    Corine Ngufor

    Full Text Available Alternative compounds which can complement pyrethroids on long-lasting insecticidal nets (LN in the control of pyrethroid resistant malaria vectors are urgently needed. Pyriproxyfen (PPF, an insect growth regulator, reduces the fecundity and fertility of adult female mosquitoes. LNs containing a mixture of pyriproxyfen and pyrethroid could provide personal protection through the pyrethroid component and reduce vector abundance in the next generation through the sterilizing effect of pyriproxyfen.The efficacy of Olyset Duo, a newly developed mixture LN containing pyriproxyfen and permethrin, was evaluated in experimental huts in southern Benin against pyrethroid resistant Anopheles gambiae and Culex quinquefasciatus. Comparison was made with Olyset Net® (permethrin alone and a LN with pyriproxyfen alone (PPF LN. Laboratory tunnel tests were performed to substantiate the findings in the experimental huts.Overall mortality of wild pyrethroid resistant An. gambiae s.s. was significantly higher with Olyset Duo than with Olyset Net (50% vs. 27%, P = 0.01. Olyset DUO was more protective than Olyset Net (71% vs. 3%, P<0.001. The oviposition rate of surviving blood-fed An. gambiae from the control hut was 37% whereas none of those from Olyset Duo and PPF LN huts laid eggs. The tunnel test results were consistent with the experimental hut results. Olyset Duo was more protective than Olyset Net in the huts against wild pyrethroid resistant Cx. quinquefasciatus although mortality rates of this species did not differ significantly between Olyset Net and Olyset Duo. There was no sterilizing effect on surviving blood-fed Cx. quinquefasciatus with the PPF-treated nets.Olyset Duo was superior to Olyset Net in terms of personal protection and killing of pyrethroid resistant An. gambiae, and sterilized surviving blood-fed mosquitoes. Mixing pyrethroid and pyriproxyfen on a LN shows potential for malaria control and management of pyrethroid resistant vectors by

  3. Resposta da soja e da biomassa de carbono do solo aos resíduos de cinco genótipos de sorgo

    Directory of Open Access Journals (Sweden)

    C. A. Vasconcellos

    1999-03-01

    Full Text Available O trabalho teve como objetivo avaliar a influência de resíduos de cinco cultivares de sorgo (Sorghum bicolor L.: CMS XS 376, CMS XS 365, BR 304, BR 700 e CMS XS 755 no crescimento e no desenvolvimento da soja. Esses resíduos foram colhidos em três estádios do desenvolvimento reprodutivo do sorgo: florescimento, enchimento de grãos e maturação. Os tratamentos estudados constaram da deposição desses resíduos na superfície do solo ou da sua total incorporação na proporção de 4 g kg-1 de matéria seca no solo (LEd, fase cerrado. Nos tratamentos com planta, mantiveram-se três plantas de soja (cv. Doko em vasos com capacidade para 3 kg de solo. Nos tratamentos sem planta, o solo foi amostrado semanalmente para avaliação das formas de N. Após a colheita da soja, amostras de planta e de solo, de cada tratamento, foram retiradas para determinar a absorção total de N e a influência desses resíduos no N disponível extraído com KCl 2 mol L-1. Os resultados revelaram que alguns resíduos culturais de sorgo afetaram, independentemente do estádio de colheita, o desenvolvimento da soja, a absorção de N, o peso de nódulos e a biomassa microbiana do solo. Tais efeitos também foram dependentes do método de incorporação do resíduo. O teor de carbono imobilizado pela biomassa foi maior quando os resíduos de sorgo foram distribuídos na superfície do solo.

  4. Test of 60 kA coated conductor cable prototypes for fusion magnets

    Science.gov (United States)

    Uglietti, D.; Bykovsky, N.; Sedlak, K.; Stepanov, B.; Wesche, R.; Bruzzone, P.

    2015-12-01

    Coated conductors could be promising materials for the fabrication of the large magnet systems of future fusion devices. Two prototype conductors (flat cables in steel conduits), each about 2 m long, were manufactured using coated conductor tapes (4 mm wide) from Super Power and SuperOx, with a total tape length of 1.6 km. Each flat cable is assembled from 20 strands, each strand consisting of a stack of 16 tapes surrounded by two half circular copper profiles, twisted and soldered. The tapes were measured at 12 T and 4.2 K and the results of the measurements were used for the assessment of the conductor electromagnetic properties at low temperature and high field. The two conductors were assembled together in a sample that was tested in the European Dipole (EDIPO) facility. The current sharing temperatures of the two conductors were measured at background fields from 8 T up to 12 T and for currents from 30 kA up to 70 kA: the measured values are within a few percent of the values expected from the measurements on tapes (short samples). After electromagnetic cycling, T cs at 12 T and 50 kA decreased from about 12 K to 11 K (about 10%), corresponding to less than 3% of I c.

  5. Descriptional Complexity of the Languages KaL: Automata, Monoids and Varieties

    Directory of Open Access Journals (Sweden)

    Ondřej Klíma

    2010-08-01

    Full Text Available The first step when forming the polynomial hierarchies of languages is to consider languages of the form KaL where K and L are over a finite alphabet A and from a given variety V of languages, a being a letter from A. All such KaL's generate the variety of languages BPol1(V. We estimate the numerical parameters of the language KaL in terms of their values for K and L. These parameters include the state complexity of the minimal complete DFA and the size of the syntactic monoids. We also estimate the cardinality of the image of A* in the Schuetzenberger product of the syntactic monoids of K and L. In these three cases we obtain the optimal bounds. Finally, we also consider estimates for the cardinalities of free monoids in the variety of monoids corresponding to BPol1(V in terms of sizes of the free monoids in the variety of monoids corresponding to V.

  6. DelPhiPKa web server: predicting pKa of proteins, RNAs and DNAs.

    Science.gov (United States)

    Wang, Lin; Zhang, Min; Alexov, Emil

    2016-02-15

    A new pKa prediction web server is released, which implements DelPhi Gaussian dielectric function to calculate electrostatic potentials generated by charges of biomolecules. Topology parameters are extended to include atomic information of nucleotides of RNA and DNA, which extends the capability of pKa calculations beyond proteins. The web server allows the end-user to protonate the biomolecule at particular pH based on calculated pKa values and provides the downloadable file in PQR format. Several tests are performed to benchmark the accuracy and speed of the protocol. The web server follows a client-server architecture built on PHP and HTML and utilizes DelPhiPKa program. The computation is performed on the Palmetto supercomputer cluster and results/download links are given back to the end-user via http protocol. The web server takes advantage of MPI parallel implementation in DelPhiPKa and can run a single job on up to 24 CPUs. The DelPhiPKa web server is available at http://compbio.clemson.edu/pka_webserver. © The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.

  7. Test results of a 20 kA high temperature superconductor current lead using REBCO tapes

    Science.gov (United States)

    Heller, R.; Fietz, W. H.; Gröner, F.; Heiduk, M.; Hollik, M.; Lange, C.; Lietzow, R.

    2018-05-01

    The Karlsruhe Institute of Technology has developed a 20 kA high temperature superconductor (HTS) current lead (CL) using the second generation material REBCO, as industry worldwide concentrate on the production of this material. The aim was to demonstrate the possibility of replacing the Bi-2223/AgAu tapes by REBCO tapes, while for easy comparison of results, all other components are copies of the 20 kA HTS CL manufactured for the satellite tokamak JT-60SA. After the manufacture of all CL components including the newly developed REBCO module, the assembly of the CL has been executed at KIT and an experiment has been carried out in the CuLTKa test facility where the REBCO CL was installed and connected to a JT-60SA CL via a superconducting bus bar. The experiment covers steady state operation up to 20 kA, pulsed operation, measurement of the heat load at 4.5 K end, loss-of-flow-accident simulations, and quench performance studies. Here the results of these tests are reported and directly compared to those of the JT-60SA CL.

  8. Investigation of the adsorption of water vapor and carbon dioxide by KA zeolite

    International Nuclear Information System (INIS)

    Khanitonov, V.P.; Shtein, A.S.

    1984-01-01

    According to the present data, KA zeolite, which can adsorb only water vapor, helium, and hydrogen, has the greatest selectivity in drying. The feasibility of using this zeolite in devices for selective drying of gases used in gas-analysis systems was studied. The results of the experiments were approximated by the thermal equation of the theory of bulk filling of micropores. The limiting value of the adsorption depends on the temperature, and it can be calculated according to the density of the adsorbed phase and the adsorption volume. The critical diameters of the water and carbon dioxide molecules are close to the dimensions of the KA-zeolite pores, something that determines the activated nature of the adsorption of these substances. Experiments on coadsorption of water vapor and carbon dioxide by a fixed bed of KA-zeolite under dynamic conditions showed that the adsorption of these substances has a frontal nature. The time of the protective action of the layer of zeolite during adsorption af water vapor exceeded by more than an order the time of the protective action during adsorption of carbon dioxide. The results showed that this adsorbent can be used for selective drying of gas mixtures containing carbon dioxide in batch-operation devices. Beforehand, the adsorbent should be regenerated with respect to moisture, and then it should be saturated with carbon dioxide by blowing the adsorbent with a gas mixture of the working composition until the equilibrium state is reached

  9. Developing hybrid approaches to predict pKa values of ionizable groups

    Science.gov (United States)

    Witham, Shawn; Talley, Kemper; Wang, Lin; Zhang, Zhe; Sarkar, Subhra; Gao, Daquan; Yang, Wei

    2011-01-01

    Accurate predictions of pKa values of titratable groups require taking into account all relevant processes associated with the ionization/deionization. Frequently, however, the ionization does not involve significant structural changes and the dominating effects are purely electrostatic in origin allowing accurate predictions to be made based on the electrostatic energy difference between ionized and neutral forms alone using a static structure. On another hand, if the change of the charge state is accompanied by a structural reorganization of the target protein, then the relevant conformational changes have to be taken into account in the pKa calculations. Here we report a hybrid approach that first predicts the titratable groups, which ionization is expected to cause conformational changes, termed “problematic” residues, then applies a special protocol on them, while the rest of the pKa’s are predicted with rigid backbone approach as implemented in multi-conformation continuum electrostatics (MCCE) method. The backbone representative conformations for “problematic” groups are generated with either molecular dynamics simulations with charged and uncharged amino acid or with ab-initio local segment modeling. The corresponding ensembles are then used to calculate the pKa of the “problematic” residues and then the results are averaged. PMID:21744395

  10. Development of Fruška Gora and some open questions of sustainability

    Directory of Open Access Journals (Sweden)

    Bajić-Brković Milica

    2010-01-01

    Full Text Available Future development of Fruška Gora triggers numerous questions from the domain of sustainability. The solutions defined in the spatial plan-PPPPN Fruška Gora 2022, can be carried out only on condition that the current course of spatial planning and space related decision making change, so that the respective procedures become more sensitive to the specific requirements of sustainability. Sustainability by itself affects the way planning is being performed, while the specifics of a concrete case, like the case explored in this paper, set up a particular input relevant for both the conceptual and methodological aspects of planning. The proposals of implementing the specific sustainability-based techniques along with the practical implications of their use throughout the planning process are examined in this paper. Normally, most of them are not part of a standard planning procedure, however, they become highly relevant in cases like Fruška Gora, or similar. A sequence of innovations and possible modifications of/within the existing paradigm proposed here include: the prevention techniques, carrying capacity assessment as it relates to the eco-balance, risk assessment, impact analysis, eco-sensitive zoning, GIS based monitoring, etc. Special attention is given to the issues of physical and environmental quality, as they relate to sustainability.

  11. Sequence preservation of osteocalcin protein and mitochondrial DNA in bison bones older than 55 ka

    Science.gov (United States)

    Nielsen-Marsh, Christina M.; Ostrom, Peggy H.; Gandhi, Hasand; Shapiro, Beth; Cooper, Alan; Hauschka, Peter V.; Collins, Matthew J.

    2002-12-01

    We report the first complete sequences of the protein osteocalcin from small amounts (20 mg) of two bison bone (Bison priscus) dated to older than 55.6 ka and older than 58.9 ka. Osteocalcin was purified using new gravity columns (never exposed to protein) followed by microbore reversed-phase high-performance liquid chromatography. Sequencing of osteocalcin employed two methods of matrix-assisted laser desorption ionization mass spectrometry (MALDI-MS): peptide mass mapping (PMM) and post-source decay (PSD). The PMM shows that ancient and modern bison osteocalcin have the same mass to charge (m/z) distribution, indicating an identical protein sequence and absence of diagenetic products. This was confirmed by PSD of the m/z 2066 tryptic peptide (residues 1 19); the mass spectra from ancient and modern peptides were identical. The 129 mass unit difference in the molecular ion between cow (Bos taurus) and bison is caused by a single amino-acid substitution between the taxa (Trp in cow is replaced by Gly in bison at residue 5). Bison mitochondrial control region DNA sequences were obtained from the older than 55.6 ka fossil. These results suggest that DNA and protein sequences can be used to directly investigate molecular phylogenies over a considerable time period, the absolute limit of which is yet to be determined.

  12. Computing pKa Values with a Mixing Hamiltonian Quantum Mechanical/Molecular Mechanical Approach.

    Science.gov (United States)

    Liu, Yang; Fan, Xiaoli; Jin, Yingdi; Hu, Xiangqian; Hu, Hao

    2013-09-10

    Accurate computation of the pKa value of a compound in solution is important but challenging. Here, a new mixing quantum mechanical/molecular mechanical (QM/MM) Hamiltonian method is developed to simulate the free-energy change associated with the protonation/deprotonation processes in solution. The mixing Hamiltonian method is designed for efficient quantum mechanical free-energy simulations by alchemically varying the nuclear potential, i.e., the nuclear charge of the transforming nucleus. In pKa calculation, the charge on the proton is varied in fraction between 0 and 1, corresponding to the fully deprotonated and protonated states, respectively. Inspired by the mixing potential QM/MM free energy simulation method developed previously [H. Hu and W. T. Yang, J. Chem. Phys. 2005, 123, 041102], this method succeeds many advantages of a large class of λ-coupled free-energy simulation methods and the linear combination of atomic potential approach. Theory and technique details of this method, along with the calculation results of the pKa of methanol and methanethiol molecules in aqueous solution, are reported. The results show satisfactory agreement with the experimental data.

  13. The potentials for creating sustainable rural tourism in Bačka

    Directory of Open Access Journals (Sweden)

    Stankov Uglješa

    2007-01-01

    Full Text Available Average rural household in Bačka mostly depend on agricultural activities. Modern society changes, especially changes in agriculture production imply need for diversification of business activities. Rural tourism can be important part of rural economy for some villages in Bačka. Fertile plain, Danube, Tisa and other smaller rivers, animals and games represent base of natural tourist attractions of rural tourism. However, main competitive advantages of Bačka are anthropogenic values. Traditional pannonian houses, baroques churches, numerous rural festivities, and "melting point" of different nationalities make good base for rural tourism development. Different combinations of rural attractions create several tourist experiences of this region: authentic tourist experience at "szalashes", particular tourist experience in villages, intensive tourist experience of rural events and manifestations, not authentic tourist experiences of pseudo rural attractions and complex tourist experience in rural areas. Regarding to emitive centers of rural tourist demand can be specified tree regions for development of rural tourism - region of Novi Sad, Subotica, and Sombor. Rural tourism can make a valuable contribution to rural economies, job creation, landscape conservation, retention of rural population, support to rural culture and tradition, nature conservation and other. At the same time, rural tourism is facing various limitations. With in this context, rural tourism planning has to include principles of sustainable development.

  14. A 230 ka record of glacial and interglacial events from Aurora Cave, Fiordland, New Zealand

    International Nuclear Information System (INIS)

    Williams, P.W.

    1996-01-01

    Caves overrun by glaciers are known to accumulate dateable evidence of past glacial and interglacial events. Results are reported from an investigation of Aurora Cave on the slopes above Lake Te Anau in Fiordland. The cave commenced to form before c. 230 ka B.P. Sequences of glaciofluvial sediments interbedded with speleothems are evidence of the number and timing of glacial advances and the status of intervals between them. Twenty-six uranium series dates on speleothems underpin a chronology of seven glacial advances in the last 230 ka, with the peak of the late Otira glaciation, Aurora 3 advance, at c. 19 ka B.P. With five advances in the Otiran, the last glaciation is more complex than previously recognised. Comparison of the record with that recorded offshore from DSDP Site 594 reveals little matching, but the correspondence of the Aurora sequence with that interpreted from other onshore deposits is more convincing. Glacial deposits on slopes above the cave for a further 660 m may be evidence of the 'missing' glacial events of the mid-early Pleistocene. (author). 44 refs., 12 figs., 5 tabs

  15. Avaliação de resíduos lignocelulósicos para a produção de Pleurotus eryngii, Lentinus sajor caju e Lentinula edodes

    OpenAIRE

    Claudia Paganelli Lacerda de Azevedo

    2000-01-01

    Pleurotus eryngii, Lentinus sajor caju e Lentinula edodes foram produzidos, em condições controladas, com resíduos lignocelulósicos em seis composições; (1) resíduo sólido de indústria de cerveja+ bagaço de cana de açúcar + sais minerais (2) resíduo sólido de indústria de cerveja + serragem de euca/yptus + sais minerais (3) resíduo sólido de indústria de cerveja + palha de arroz + sais minerais (4) resíduo sólido de indústria de cerveja + bagaço de cana de açúcar (5) resíduo sólido de indústr...

  16. Programa de terapia miofuncional orofacial para indivíduos submetidos à cirurgia ortognática

    Directory of Open Access Journals (Sweden)

    Renata Resina Migliorucci

    Full Text Available RESUMO Objetivo: apresentar um Programa de Terapia Miofuncional Orofacial para indivíduos submetidos à cirurgia ortognática. Métodos: foram realizadas 3 etapas distintas: a primeira envolveu a elaboração do programa inicial a partir da revisão da literatura sobre o processo terapêutico após a cirurgia; a segunda a aplicação do programa inicial por duas fonoaudiólogas especialistas em motricidade orofacial em 21 indivíduos, após ortognática, que sugeriram modificações no protocolo inicial, resultando numa segunda versão; na terceira e última etapa, o mesmo foi analisado quanto ao conteúdo por três fonoaudiólogas especialistas em Motricidade Orofacial e novas modificações foram realizadas. Resultado: o programa foi elaborado com base em 38 trabalhos científicos, cuja aplicação pelas fonoaudiólogas resultou em modificações considerando a tipologia facial e as condições dento-oclusais, armazenamento do soro fisiológico; detalhamento dos objetivos das atividades propostas e alongamento do lábio superior. Após as sugestões das especialistas a versão final foi constituída de 12 sessões, sendo a primeira avaliação, 10 sessões de terapia uma vez por semana, envolvendo exercícios miofuncionais, estimulação sensorial e treino funcional, sendo a última sessão de reavaliação. Conclusão: foi possível desenvolver um Programa de Terapia Miofuncional Orofacial para indivíduos submetidos à cirurgia ortognática, sendo necessário que o mesmo seja validado.

  17. Acompanhamento da hidratação de cimento Portland simples com resíduo de bauxita

    Directory of Open Access Journals (Sweden)

    R. C. O. Romano

    Full Text Available Resumo A substituição parcial de cimento Portland por resíduo de bauxita (RB resulta em produtos com, no mínimo, propriedades similares às dos produtos fabricados com o ligante puro. No entanto, as interações físico-químicas entre os diferentes tipos de cimento e o RB durante a reação de hidratação ainda é pouco explorada em literatura. A elevada quantidade de sódio e a presença de Al2O3, SiO2 e Fe2O3 são fatores que afetam a formação dos produtos hidratados e dependem do tipo de cimento utilizado na mistura. Sendo assim, este trabalho foi realizado com o objetivo de avaliar o impacto da presença do resíduo de bauxita em associação ao cimento Portland simples nas primeiras idades de hidratação. Calorimetria de condução isotérmica, difração de raios X, análise termogravimétrica e espectroscopia de infravermelho foram as técnicas escolhidas para o monitoramento. Os resultados ilustraram que a presença do resíduo coletado na planta da Alcoa (Poços de Caldas aumenta o tempo de indução, o consumo de portlandita, e as quantidades de etringita e monossulfoaluminato formadas. Ao mesmo tempo, houve formação de silicoaluminato de sódio e bicarbonato de sódio, devido às reações com silicatos, aluminatos e com o carbonato do cimento.

  18. Terapia pulpar em dentes decíduos: possibilidades terapêuticas baseadas em evidências

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    Natalino Lourenço Neto

    Full Text Available INTRODUÇÃO: A pulpotomia em dentes decíduos é uma técnica conservadora de terapia pulpar amplamente utilizada em Odontopediatria, sendo de fundamental importância para evitar a perda prematura desses dentes, quer seja por alterações provocadas pela cárie dentária ou traumatismo dentário. Apesar de ser uma técnica estudada há muitos anos, causa muitas controvérsias e discussões, principalmente em termos de biocompatibilidade dos medicamentos empregados e pelas dificuldades e falhas no diagnóstico da condição pulpar. OBJETIVO: Por meio de uma revisão sistemática da literatura, no período compreendido entre 2000 e 2011, e com enfoque em estudos clínicos randomizados, revisões sistemáticas e meta-análises, este trabalho teve como objetivo discutir, com base em evidências científicas, alternativas para o tratamento de pulpotomia em dentes decíduos humanos. CONCLUSÃO: As evidências científicas fidedignas com o uso de materiais capeadores pulpares e as técnicas de Eletrocirurgia e Laser de Baixa Potência foram escassas. Desta forma, sugere-se a realização de estudos complementares bem delineados estatisticamente para maiores esclarecimentos. As informações geradas em tais experimentos poderão contribuir para um melhor entendimento dos mecanismos da terapia pulpar, podendo gerar o desenvolvimento de protocolos com novas formas terapêuticas, que visam a melhorar a terapia pulpar em dentes decíduos.

  19. Weathering rind formation in buried terrace cobbles during periods of up to 300ka

    International Nuclear Information System (INIS)

    Yoshida, H.; Metcalfe, R.; Nishimoto, S.; Yamamoto, H.; Katsuta, N.

    2011-01-01

    Highlights: → Weathering rinds in sandstone and basalt cobbles buried for up to 300 ka have been investigated. → The aim was to determine the formation process and elemental mass balances during rind development. → Elemental mass balances across the rinds were determined by using open system mass balance (τ i,j ) calculations. → The formation rates are slower than the tropical areas due to the lower rainfall in the studied area. - Abstract: Weathering rinds formed in Mesozoic sandstone and basalt cobbles buried in terrace deposits for up to 300 ka have been investigated. The aim was to determine the formation process and elemental mass balances during rind development. The ages of terraces distributed in the western part of Fukui prefecture, central Japan have been determined as 50 ka, 120 ka and 300 ka based on a tephro-stratigraphic method. Detailed investigations across the weathering rinds, consisting of microscopic observations, porosity measurements, and mineralogical and geochemical analyses using X-ray diffractometry (XRD), X-ray fluorescence (XRF), secondary X-ray analytical microscopy (SXAM), scanning electron microanalyser (SEM) and electron probe microanalysis (EPMA) have been carried out. The results revealed that the Fe concentrations in the weathering rind of a basalt cobble slightly decreased from the cobble's surface (rim) towards the unweathered core. In contrast, in a sandstone cobble formed under the same environmental conditions over the same period of time there is an Fe-rich layer at some distance below the cobble's surface. Elemental mass balances across the rinds were determined by using open system mass balance (τ i,j ) calculations and show that the Fe was precipitated as Fe-oxyhydroxides in the basalt cobbles, although Fe was slightly removed from the rims. In sandstone cobbles, on the other hand, Fe migrated along a Fe concentration gradient by diffusion and precipitated as Fe-oxyhydroxide minerals to form the weathering rinds

  20. The effects of multiple features of alternatively spliced exons on the KA/KS ratio test

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    Chen Feng-Chi

    2006-05-01

    Full Text Available Abstract Background The evolution of alternatively spliced exons (ASEs is of primary interest because these exons are suggested to be a major source of functional diversity of proteins. Many exon features have been suggested to affect the evolution of ASEs. However, previous studies have relied on the KA/KS ratio test without taking into consideration information sufficiency (i.e., exon length > 75 bp, cross-species divergence > 5% of the studied exons, leading to potentially biased interpretations. Furthermore, which exon feature dominates the results of the KA/KS ratio test and whether multiple exon features have additive effects have remained unexplored. Results In this study, we collect two different datasets for analysis – the ASE dataset (which includes lineage-specific ASEs and conserved ASEs and the ACE dataset (which includes only conserved ASEs. We first show that information sufficiency can significantly affect the interpretation of relationship between exons features and the KA/KS ratio test results. After discarding exons with insufficient information, we use a Boolean method to analyze the relationship between test results and four exon features (namely length, protein domain overlapping, inclusion level, and exonic splicing enhancer (ESE frequency for the ASE dataset. We demonstrate that length and protein domain overlapping are dominant factors, and they have similar impacts on test results of ASEs. In addition, despite the weak impacts of inclusion level and ESE motif frequency when considered individually, combination of these two factors still have minor additive effects on test results. However, the ACE dataset shows a slightly different result in that inclusion level has a marginally significant effect on test results. Lineage-specific ASEs may have contributed to the difference. Overall, in both ASEs and ACEs, protein domain overlapping is the most dominant exon feature while ESE frequency is the weakest one in affecting

  1. Palaeocirculation across New Zealand during the last glacial maximum at ˜21 ka

    Science.gov (United States)

    Lorrey, Andrew M.; Vandergoes, Marcus; Almond, Peter; Renwick, James; Stephens, Tom; Bostock, Helen; Mackintosh, Andrew; Newnham, Rewi; Williams, Paul W.; Ackerley, Duncan; Neil, Helen; Fowler, Anthony M.

    2012-03-01

    What circulation pattern drove Southern Alps glacial advances at ˜21 ka? Late 20th century glacial advances in New Zealand are commonly attributed to a dual precipitation increase and cooler than normal temperatures associated with enhanced westerly flow that occur under synoptic pressure patterns termed 'zonal' regimes (Kidson, 2000). But was the circulation pattern that supported major Southern Alps glacial advances during the global LGM similar to the modern analog? Here, a Regional Climate Regime Classification (RCRC) time slice was used to infer past circulation for New Zealand during the LGM at ˜21 ka. Palaeoclimate information that supported the construction of the ˜21 ka time slice was derived from the NZ-INTIMATE Climate Event Stratigraphy (CES), one new Auckland maar proxy record, and additional low-resolution data sourced from the literature. The terrestrial evidence at ˜21 ka implicates several possibilities for past circulation, depending on how interpretations for some proxies are made. The interpretation considered most tenable for the LGM, based on the agreement between terrestrial evidence, marine reconstructions and palaeoclimate model results is an 'anticyclonic/zonal' circulation regime characterized by increased influences from blocking 'highs' over the South Island during winter and an increase in zonal and trough synoptic types (with southerly to westerly quarter wind flow) during summer. These seasonal circulation traits would have generated lower mean annual temperatures, cooler than normal summer temperatures, and overall lower mean annual precipitation for New Zealand (particularly in the western South Island) at ˜21 ka. The anticyclonic/zonal time slice reconstruction presented in this study has different spatial traits than the late 20th Century and the early Little Ice Age signatures, suggesting more than one type of regional circulation pattern can drive Southern Alps glacial activity. This finding lends support to the hypothesis

  2. Cataclysmic Rock Avalanche from El Capitan, Yosemite Valley, circa 3.6 ka

    Science.gov (United States)

    Stock, G. M.

    2008-12-01

    El Capitan in Yosemite Valley is one of the largest and most iconic granite faces in the world. Despite glacially steepened walls exceeding 90 degrees, a historic database shows relatively few rock falls from El Capitan in the past 150 years. However, a massive bouldery deposit beneath the southeast face suggests an earlier rock avalanche of unusually large size. Spatial analysis of airborne LiDAR data indicate that the rock avalanche deposit has a volume of ~2.70 x 106 m3, a maximum thickness of 18 m, and a runout distance of 660 m, roughly twice the horizontal extent of the adjacent talus. The deposit is very coarse on its distal edge, with individual boulder volumes up to 2500 m3. Cosmogenic 10Be exposure dates from boulders distributed across the deposit confirm this interpretation. Four 10Be samples are tightly clustered between 3.5 and 3.8 ka, with a mean age of 3.6 +/- 0.6 ka. A fifth sample gives a much older age of 22.0 ka, but a glacier occupied Yosemite Valley at this time, prohibiting deposition; thus, the older age likely results from exposure on the cliff face prior to failure. The similarity of ages and overall morphology suggest that the entire deposit formed during a single event. The mean exposure age coincides with inferred Holocene rupture of the northern Owens Valley and/or White Mountain fault(s) between 3.3 and 3.8 ka (Lee et al., 2001; Bacon and Pezzopane, 2007). This time coincidence, combined with the fact that historic rupture of the Owens Valley fault in A.D. 1872 generated numerous large rock falls in Yosemite Valley, strongly suggests that the El Capitan rock avalanche was triggered by a seismic event along the eastern margin of the Sierra Nevada circa 3.6 ka. As there is not an obvious "scar" on the expansive southeast face, the exact source area of the rock avalanche is not yet known. Detrital apatite U-Th/(He) thermochronometry can determine the elevation(s) from which rock fall boulders originate, but significant inter-sample age

  3. O TRABALHO COMO ATIVIDADE PRINCIPAL NO DESENVOLVIMENTO PSÍQUICO DO INDIVÍDUO ADULTO

    Directory of Open Access Journals (Sweden)

    Camila Fernanda Moro Rios

    2017-12-01

    Full Text Available Este artigo visa analisar, por meio da revisão teórica de autores clássicos e contemporâneos da psicologia histórico-cultural, o trabalho como atividade principal na vida adulta, isto é, como a atividade que orienta as principais mudanças no psiquismo humano e na personalidade nessa idade. Para tanto, abstrai e generaliza elementos constantes nos estudos sobre periodização do desenvolvimento psíquico humano. Por um lado, identifica os conteúdos e processos psicológicos que, produzidos pelo trabalho, evidenciam sua relevância para o desenvolvimento do indivíduo adulto. Por outro, aborda os processos de alienação inerentes à sociedade capitalista, que alienam o trabalho como atividade principal. Assim, o trabalho se apresenta, dialeticamente, como atividade humanizadora e alienada. Entende-se que este estudo contribui para o avanço teórico-metodológico da psicologia histórico-cultural por abordar a questão do trabalho como atividade principal, uma discussão que se encontra ainda incipiente e pouco sistematizada. Além disso, supera o enfoque dos estudos sobre o desenvolvimento centrados na infância e reitera o rompimento com a perspectiva maturacionista de que a vida adulta é um período de estagnação do desenvolvimento. Pela análise do trabalho como atividade principal conclui-se que o desenvolvimento psicológico, produzido na vida adulta, se expressa, principalmente, por uma série de aquisições de habilidades e capacidades, pelo exercício da criatividade, por uma complexa reestruturação da esfera afetivo-motivacional da personalidade, pelo desenvolvimento da autoconsciência e pelo movimento dialético da consciência de classe, que tensiona a contradição entre o polo humanizador e o polo alienado/alienante do trabalho numa sociedade que limita e empobrece esse mesmo desenvolvimento.

  4. ATIVIDADE ANTIOXIDANTE DE EXTRATOS DE RESÍDUO AGROINDUSTRIAL DE GOIABA (PSIDIUM GUAJAVA L.

    Directory of Open Access Journals (Sweden)

    Rosilda Josefa NASCIMENTO

    2010-11-01

    Full Text Available

    Como o objetivo de avaliar o potencial antioxidante de resíduo agroindustrial de goiaba (semente, extratos hidroacetônico, hidrometanólico hidroetanólico e aquoso, obtidos por extração seqüencial, foram submetidos à quantificação do teor de fenólicos totais e a determinação da atividade antioxidante, utilizando dois ensaios: co-oxidação β-caroteno/ácido linoléico e inibição da peroxidação do ácido linoléico. Os extratos hidroacetônico e hidrometanólico exibiram o maior teor de fenólicos totais (5.317,27 e 2.176,46µg mL-1, respectivamente, enquanto que o aquoso e hidroetanólico os mais baixos teores destes constituintes, sendo, portanto, estes últimos excluídos dos experimentos. Em sistema da co-oxidação β-caroteno/ácido linoléico, o extrato hidroacetônico exibiu o mais elevado percentual de inibição da oxidação (81,95%. A cinética da reação revelou que estes extratos, com valores de F1 inferior a 1, são eficientes no início do processo oxidativo, porém exibem atividade pró-oxidante na etapa de propagação da reação em cadeia. O extrato hidroacetônico associado ao BHT em quantidades inferiores a 40mg. L-1 exibe atividade antioxidante estatisticamente semelhante a do BHT na concentração de 100mg.L-1. A ação do extrato hidroacetônico (74,32% e 80,13% sobre a peroxidação do ácido linoléico foi superior a do extrato hidrometanólico (50,50% e 73,70%, nas duas concentrações testadas (140 e 240mg.L-1. Em meio lipídico, o extrato hidroacetônico exibe ação antioxidante relevante, entretanto, apresenta eficiência apenas na etapa inicial da oxidação.

  5. Cultura, preconceito e indivíduo: análise crítica do bullying escolar

    OpenAIRE

    Wascheck, Murilo de Camargo

    2016-01-01

    Esta dissertação vincula-se à linha de pesquisa Cultura e Processos Educacionais e discute o bullying escolar na perspectiva da teoria crítica frankfurtiana (mais detidamente, na produção de Theodor W. Adorno e Max Horkheimer). Para tanto, analisamos algumas definições centrais relativas ao bullying escolar e à sociedade, como: preconceito, escola, cultura, mundo do trabalho, indivíduo, violência, narcisismo, estereotipia, ideologia da racionalidade tecnológica, alienação, emancipação, esclar...

  6. Duo-Active-Neutral-Point-Clamped Multilevel Converter: An Exploration of the Fundamental Topology and Experimental Verification

    DEFF Research Database (Denmark)

    Dargahi, Vahid; Corzine, Keith A.; Enslin, Johan H.

    2018-01-01

    For medium-voltage (MV) industrial applications such as the HVDC and adjustable-speed ac-motor drives, the multilevel voltage-source converters are deemed the predominant topologies. One of the promising derived-topologies from the neutral-point-clamped (NPC) configuration is the active NPC (ANPC......) structure with an improved balanced lossdistribution performance. This paper introduces duo-ANPC (D-ANPC) converter topology, which is controlled with a new modulation technique. The suggested control method regulates the flying capacitor (FC) voltages naturally at their reference values and preserves...

  7. AVALIAÇÃO DAS PROPRIEDADES MECÂNICAS DE BLOCOS INTERTRAVADOS COM RESÍDUO DE PNEU RECICLADO

    Directory of Open Access Journals (Sweden)

    Anaaiara Varela dos Santos

    2008-05-01

    Full Text Available Pavimentos intertravados de concreto são peças pré-moldadas que surgiram visando desenvolver a estrutura de estradas e vias urbanas. As peças pré-moldadas de concreto possuem dimensões e qualidades padronizadas, exigindo alto controle no processo de fabricação. No entanto, sua aplicação é de fácil manuseio, não necessitando de mão de obra especializada. O principal objetivo desta pesquisa foi o de estudar a viabilidade da utilização de resíduos de pneus reciclados em blocos para pavimentos intertravados para calçadas. Partindo-se de um traço de referência, fez-se a caracterização dos materiais componentes da mistura (cimento, areia média e pedrisco para a confecção de corpos-de-prova cilíndricos de 10x20cm. Em seguida, procedeu-se a moldagem de corpos de prova com a substituição do agregado miúdo por adições do resíduo de pneu nas porcentagens de 10%, 20% e 30%, em massa. Investigou-se nas amostras os parâmetros de Massa Específica e Resistência à Compressão. Analisou-se, de forma comparativa, os resultados obtidos nos corpos-de-prova de referência com os confeccionados com pneu. Verificou-se que até o limite de 30% de resíduo de pneu, a mistura apresentou trabalhabilidade e coesão, atingindo uma resistência à compressão de 12MPa. Tal valor pode ser considerado elevado em se tratando de blocos que serão usados apenas em calçadas, onde o tráfego será exclusivo de pedestres. Palavras-chaves: pavimentos intertravados, reciclagem, resíduos de pneus e concretos pré-moldados.

  8. Avaliação estética da face em indivíduos com deformidades dentofaciais

    Directory of Open Access Journals (Sweden)

    Silmara Regina Pavani Sovinski

    Full Text Available RESUMO Objetivo: analisar as características estéticas da face em indivíduos com deformidades dentofaciais (DDF e os possíveis aspectos que se relacionam com aspectos da pele quanto às rugas e sulcos. Métodos: avaliou-se 36 adultos jovens (média de 27,22 anos, em três grupos, DDF padrão II, III e grupo controle (GC. Realizou-se análise facial utilizando o Protocolo de Avaliação Miofuncional Orofacial MBGR. Elaborou-se um protocolo de avaliação estético facial a partir das análises validadas para a classificação de rugas, linhas de marionete e sulcos na região orbicular dos olhos. Aplicaram-se testes estatísticos pertinentes. Resultados: indivíduos com DDF e 50% do GC apresentaram alteração quanto à assimetria facial e ângulo nasolabial, com diferença estatisticamente significante entre DDF-II, DDF-III e GC. Indivíduos com DDF mostraram maior frequência de alteração para os sulcos verticais na região dos lábios e linhas de marionete, sem diferenças entre os grupos. Houve correlação positiva entre sulco na região do prócero e os sulcos verticais nos lábios, sulco na região do orbicular dos olhos com o sulco nasogeniano e com as linhas de marionete. O ângulo nasolabial correlacionou-se com sulco na região da testa. A idade correlacionou-se com sulco nasogeniano, sulco na região do prócero, linhas de marionete e sulcos na região do orbicular dos lábios. Conclusão: indivíduos com DDF apresentaram alteração de simetria facial, ângulo nasolabial e da pele quanto às rugas. Aspectos estéticos da face correlacionaram-se entre si, bem como ângulo nasolabial com sulcos na testa. A idade também demonstrou relação com a estética facial.

  9. VALORIZAÇÃO DOS RESÍDUOS DE SISAL: UMA PROPOSTA PARA A REGIÃO DO SEMIARIDO DO ESTADO DA BAHIA

    Directory of Open Access Journals (Sweden)

    Antonivalda Tosta Dias

    2015-01-01

    Full Text Available O presente estudo tem como objetivo apresentar uma proposta para a valorizaçãodos resíduos de sisal que reduza e/ou elimine o passivo ambiental existente naRegião Sisaleira da Bahia. Este trabalho foi desenvolvido em duas etapas. Naprimeira etapa, foi feito um diagnóstico visual dos problemas fitossanitáriosassociados ao beneficiamento do sisal na Comunidade Rose do município deSantaluz, complementado com análise das propriedades químicas dos solos(arenoso e argiloso em seis unidades produtivas, onde foram avaliados locaiscom ou sem o resíduo do sisal nas profundidades de 0 - 20cm e 20 - 40cm. Nasegunda etapa, foi montado um experimento de compostagem na UniversidadeEstadual de Feira de Santana, com os seguintes tratamentos: T! - resíduo desisal, T2 - resíduo de sisal + poda de árvores + urina humana + esterco de cabra,T3 - resíduo de sisal + poda de árvores + esterco de cabra e T4 - resíduo de sisal+ poda de árvores + urina humana + esterco de cabra. Estes resíduos foramdispostos em camadas de 20cm, exceto o tratamento T4, em que a matéria primafoi homogeneizada antes da montagem das pilhas. Foram avaliados osparâmetros físicos e químicos do composto formado. Os resultados encontradosna primeira etapa demonstram que não existe um local definitivo para odesfibramento do sisal que é descartado no campo, ocupando áreas antesprodutivas por mais de dois anos, tempo necessário para sua degradação. Oresíduo é um meio adequado para produção de moscas. O solo, por sua vez, érico em matéria orgânica, entretanto, o teor de nutrientes foi muito maior no localcom a presença do resíduo de sisal. O composto orgânico em todos ostratamentos apresentou teores de nutrientes e metais pesados de acordo com osvalores pré-estabelecidos pelo MAPA, com exceção do nitrogênio que ficouabaixo do exigido. É possível obter um composto orgânico de boa qualidade apartir da mistura de resíduos de sisal com outros componentes

  10. Stairs to Skałka. From Iconography of Martyrdom of Bishop Stanislaus

    Directory of Open Access Journals (Sweden)

    Tomasz Węcławowicz

    2003-12-01

    Full Text Available For over one hundred years research discussions have revolved around two issues: was Skałka really the site of the martyrdom of bishop Stanislaus, and, what was the church like in its medieval phases: the alleged, pre-Romanesque phase and, confirmed by sources, the Gothic foundation of Casimir the Great. An argument over the site of the martyrdom will turn out to be unimportant if it is considered in two different meanings, two different orders of interpretation. In the historiographic meaning, bishop Stanislaus might have been killed on the Wawel hill, while in the hagiographic meaning, the martyrdom must have taken place on the site called Skałka, outside the town and the Vistula river, in a distant sanctuary of Archangel Gabriel. The latter of the aforementioned research questions - what was the church “Na Skałce’ like in the Middle Ages - was put at the end of the 19th century by Władysław Łuszczkiewicz. In an answer, he presented the churches imagined in the scenes of the Martyrdom of St. Stanislaus in triptychs from St. Mary’s church in Cracow and from a church at Pławno. He understood them as realistic views of Skałka at the beginning of the 16th century A survey of a broad material shows, however, that in the late medieval iconography of St. Stanislaus at least two architectural types of the church which is the background of the Martyrdom scene can be distinguished at the beginning of the 16th century. The question what Skałka was like in reality is a wrong question then and must be left unanswered. The right question is: why was the architectural background of the Martyrdom scene depicted in such different ways, and, was this architecture in its iconographic design really meant to show only the Gothic church ‘Na Skałce’. With varied realisations of details of the church itself, the common motives of all depictions of Skałka are: walls surrounding the hill, gates built in them - one, two or three, always open and

  11. Ostaci srednjevjekovne utvrde Kaštel (Fenarlik u kartografskim izvorima XIX i XX vijeka : The remains of the fortress Kaštel (Fenarlik in cartographic sources of the 19th and 20th centuries

    Directory of Open Access Journals (Sweden)

    Jusuf Topoljak

    2015-12-01

    Full Text Available Utvrda Kaštel (Fenarlik, locirana između Novog Travnika i Bugojna, vjerovatno je podignuta u razdoblju srednjeg vijeka, a u kartografskim izvorima se prvi put javlja tek 1883. godine. Geodetski planovi i karte 19. i 20. vijeka vjerodostojno dokumentuju propadanje ostataka tog utvrđenja, isprva ga jasno prikazujući kao ruševinu, dok se naposljetku sačuvao samo toponim Kaštel. Ovim radom autori su pokušali identifikovati i objediniti sve relevantne kartografske izvore na kojima je predočen lokalitet Kaštela, uz analizu načina topografisanja ostataka srednjevjekovne utvrde. : The fortress Kaštel (Fenarlik, located between Novi Travnik and Bugojno, probably was built in the period of middle ages. Concerning cartographic sources, it first appeared in 1883. Geodetic plans and maps from the 19th and 20th century credibly documented deterioration of the fortress remains. At first, it clearly displayed a ruin, while ultimately toponym Kaštel was the only preserved. Authors of this paper tried to identify and consolidate all relevant cartographic sources that represent the place Kaštel, together with the analysis of topographing the medieval fortresses.

  12. Resíduos de estações de tratamento de água e a ISO 24512: desafio do saneamento brasileiro

    Directory of Open Access Journals (Sweden)

    Cali Laguna Achon

    2013-06-01

    Full Text Available O advento da ISO 24512:2007 suscita discussões muito interessantes em relação ao funcionamento dos sistemas de abastecimento de água em âmbito mundial. No Brasil, a maioria das estações de tratamento de água é convencional de ciclo completo, gerando resíduos complexos e de difícil manejo e disposição. Este trabalho teve como objetivo avaliar de forma crítica a problemática dos resíduos das estações de tratamento de água no Brasil, mediante o estudo da viabilidade de construção e uso de indicadores, tais como aqueles preconizados pela ISO 24512. A grande maioria das estações de tratamento de água analisadas, que refletem um quadro comum no Brasil, não dimensiona a quantidade de resíduos gerados, poucas avaliam suas características e destinam adequadamente esses resíduos, o que dificulta e, em muitos casos, pode impossibilitar o uso de indicadores como ferramentas de gestão. Esse cenário remete ao desafio enfrentado na área de saneamento em relação à gestão dos resíduos em consonância com as normas internacionais.

  13. Gerenciamento de resíduos de serviço de saúde de animais de produção: revisão

    Directory of Open Access Journals (Sweden)

    Evelyne Cazarotto Farezin

    2017-11-01

    Full Text Available A demanda por produtos de origem animal vem aumentando gradativamente no mundo, e a expectativa é que haja um incremento nos próximos anos, juntamente com a produção. Em consequência disso, ocorre também acréscimo na geração de diferentes tipos de resíduos nas propriedades. Um dos resíduos que são gerados na produção animal são os resíduos de serviço de saúde animal (RSSA. Diante deste cenário, objetivou-se realizar uma revisão sobre o gerenciamento de RSSA. Os RSSA mesmo que produzidos em menor quantidade devem receber cuidado especial devido à capacidade de infectar e contaminar o meio ambiente e o ser humano. O gerenciamento de RSSA é importante para mitigar os impactos ambientais e sanitários. Nas propriedades rurais, é ainda pouco discutido e realizado. É importante buscar medidas para realizar a correta segregação e posterior reciclagem dos RSSA. A disposição final da maior parte destes resíduos é efetuada de forma inadequada. É de fundamental importância à implantação de um plano de gerenciamento de resíduos sólidos e que mais estudos sejam realizados na área.

  14. 20180318 - Prediction Of pKa From Chemical Structure Using Free And Open-Source Tools (ACS Spring)

    Science.gov (United States)

    The ionization state of a chemical, reflected in pKa values, affects lipophilicity, solubility, protein binding and the ability of a chemical to cross the plasma membrane. These properties govern the pharmacokinetic parameters such as absorption, distribution, metabolism, excreti...

  15. Dopingaine võib kätte saada ka vanaema retseptiga / Kristjan Port ; intervjueerinud Indrek Kuus

    Index Scriptorium Estoniae

    Port, Kristjan, 1960-

    2011-01-01

    Intervjuu Tallinna Ülikooli terviseteaduste ja spordi instituudi direktori, SA Eesti Antidoping nõukogu liikme Kristjan Pordiga, kes tõdeb, et profispordi kõrval on dopingainetega muret ka harrastusspordis

  16. Berliini filmifestivalil näeb ka Peeter Simmi filmi "Head käed" / Triin Tael

    Index Scriptorium Estoniae

    Tael, Triin

    2002-01-01

    Berliini 52. filmifestival algas eile sakslase Tom Tykweri mängufilmiga "Taevas". Esmakordselt on festivali "Panorama" kavas eesti mängufilm, milleks on Peeter Simmi "Head käed". Eesti filmid on esil ka festivali suurel filmiturul

  17. pKa prediction for acidic phosphorus-containing compounds using multiple linear regression with computational descriptors.

    Science.gov (United States)

    Yu, Donghai; Du, Ruobing; Xiao, Ji-Chang

    2016-07-05

    Ninety-six acidic phosphorus-containing molecules with pKa 1.88 to 6.26 were collected and divided into training and test sets by random sampling. Structural parameters were obtained by density functional theory calculation of the molecules. The relationship between the experimental pKa values and structural parameters was obtained by multiple linear regression fitting for the training set, and tested with the test set; the R(2) values were 0.974 and 0.966 for the training and test sets, respectively. This regression equation, which quantitatively describes the influence of structural parameters on pKa , and can be used to predict pKa values of similar structures, is significant for the design of new acidic phosphorus-containing extractants. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.

  18. Enroni krahh võib hakata mõjutama ka Eesti ettevõtteid / Gert D. Hankewitz

    Index Scriptorium Estoniae

    Hankewitz, Gert D.

    2006-01-01

    USA energiafirma Enron finantspettus võib hakata läbi koostööpartnerite, kellele hakkavad kehtima karmimad raamatupidamisreeglid, mõjutama ka Eesti firmasid. Vt. samas: Akt karmistab reegleid; Hansapangale tooks akt lisakulutusi

  19. High-Efficiency, Ka-band Solid-State Power Amplifier Utilizing GaN Technology, Phase I

    Data.gov (United States)

    National Aeronautics and Space Administration — QuinStar Technology proposes to develop an efficient, solid-state power amplifier (SSPA), operating at Ka-band frequencies, for high data rate, long range space...

  20. High-Efficiency, Ka-Band Solid-State Power Amplifier Utilizing GaN Technology, Phase II

    Data.gov (United States)

    National Aeronautics and Space Administration — QuinStar Technology proposes to develop a high-efficiency, solid-state power amplifier (SSPA), operating at Ka-band frequencies, for high data rate, long range space...

  1. Enne võõrandamist uppunud auriku eest saab ka hüvitust / Hille Tänavsuu

    Index Scriptorium Estoniae

    Tänavsuu, Hille, 1941-2014

    2006-01-01

    Tallinna linnavalitsuse otsusest kompenseerida kuue, 1940. aasta oktoobris õigusvastaselt võõrandatud, aurulaeva mõttelisi osi. Laevadega seotud probleemist ka laiemalt ning laevade saatusest. Lisatud: mis on õigusvastaselt võõrandatud vara

  2. Miniaturized UHF, S-, and Ka-band RF MEMS Filters for Small Form Factor, High Performance EVA Radio, Phase II

    Data.gov (United States)

    National Aeronautics and Space Administration — In Phase II of this SBIR, Harmonic Devices (HDI) proposes to develop miniaturized MEMS filters at UHF, S-band and Ka-band to address the requirements of NASA's...

  3. Variation of paleo-productivity and terrigenous input in the eastern Arabian Sea during the past 100 ka

    Digital Repository Service at National Institute of Oceanography (India)

    Ishfaq, A.M.; Pattan, J.N.; Matta, V.M.; Banakar, V.K.

    A 4.1m long sediment core from the eastern Arabian Sea is studied using multiple geochemical proxies to understand the variation of productivity and terrigenous matter supply during the past 100 ka. The temporal variation in element concentration...

  4. Comparison of AltiKa and CryoSat-2 Elevation and Elevation Rates over the Amundsen Sea Sector

    Science.gov (United States)

    Otosaka, I.; Shepherd, A.; Hogg, A.

    2017-12-01

    Altimeters have been successfully used for more than two decades to observe changes in the ice sheet surface and to estimate the contribution of ice sheets to sea level rise. The Satellite for Argos and AltiKa (SARAL) was launched in February 2013 as a joint mission between the French space agency (CNES) and the Indian Space Research Organisation (ISRO). While the altimeters previously launched into space are operating at Ku-band (13.6 GHz), the altimeter on board SARAL, AltiKa, is the first instrument to operate at Ka-band (36.8 GHz). The higher frequency of AltiKa is expected to lead to reduced penetration of the radar signal into the snowpack, compared to Ku-band. A comparison of ice sheet elevation measurements recorded at the two frequencies may therefore provide useful information on surface and its scattering properties. In this study, we compare elevation and elevation rates recorded by AltiKa and CryoSat-2 between March 2013 and April 2017 over the Amundsen Sea Sector (ASS), one of the most rapidly changing sectors of West Antarctica. Elevation and elevation rates are computed within 5 km grid cells using a plane fit method, taking into account the contributions of topography and fluctuations in elevation and backscatter. The drifting orbit and imaging modes of CryoSat-2 result in 78,7 % sampling of the study area, whereas AltiKa samples 39,7 % due to its sparser orbit pattern and due to loss of signal in steeply sloping coastal margins. Over the study period, the root mean square difference between elevation and elevation change recorded at Ka-band and Ku-band were 40.3 m and 0.54 m/yr, respectively. While the broad spatial pattern of elevation change is well resolved by both satellites, data gaps along the Getz coastline may be partly responsible for the lower elevation change rate observed at Ka-band. We also compared CryoSat-2 and AltiKa to coincident airborne data from NASA's Operation IceBridge (OIB). The mean difference of elevation rate between

  5. The 13 ka Pelée-Type Dome Collapse at Nevado de Toluca Volcano, México.

    Science.gov (United States)

    D'Antonio, M.; Capra, L.; Sarocchi, D.; Bellotti, F.

    2007-05-01

    The Nevado de Toluca is an active volcano located in the central sector of the Trans-Mexican Volcanic Belt, 80 km southwest of Mexico City. Activity at this andesitic to dacitic stratovolcano began ca. 2.6 Ma ago. During the last 42 ka, the volcano has been characterized by different eruptive styles, including five dome collapses dated at 37, 32, 28, 26, and 13 ka and five Plinian eruptions at 42 ka, 36 ka, 21.7 ka, 12.1 ka and 10.5 ka. The 13 ka dome collapse is the youngest event of this type, and originated a 0.11 km3 block-and-ash flow deposit on the north-eastern sector of the volcano. The deposit consists of two facies: channel-like, 10 m thick, monolitologic, that is composed of up to five units, with decimetric dacitic clasts set in a sandy matrix; and a lateral facies that consists of a gray, sandy horizon, up to 4 m thick, with a 30 cm-thick surge layer at the base. The main component is a dacitic lava, with different degree of vesciculation, with mineral association of Pl-Hbl-Opx. Plagioclases show two different textures: in equilibrium, with normal zoning (core = An37-64.3, rim = An30.7-45.8) or with spongy cellular texture with inverse zoning (core = An38-43.5, rim = An45-51.2). Hornblende is normally light green, barren of oxidation. The rock matrix contains up to 53 perc. of glass with abundant microlites, indicating over-pressure on the crystallizing magma and a rapid expulsion. All these stratigraphic and petrographic features indicate that the dome was quickly extruded on the summit of the volcano, probably triggered by a magma mixing process, and its collapse was accompanied by an explosive component, being classified as a Pelée-type event.

  6. Estimated pKa values for the environmentally relevant C1 through C8 perfluorinated sulfonic acid isomers.

    Science.gov (United States)

    Rayne, Sierra; Forest, Kaya

    2016-10-14

    In order to estimate isomer-specific acidity constants (pKa) for the perfluorinated sulfonic acid (PFSA) environmental contaminants, the parameterization method 6 (PM6) pKa prediction method was extensively validated against a wide range of carbon oxyacids and related sulfonic/sulfinic acids. Excellent pKa prediction performance was observed for the carbon oxyacids using the PM6 method, but this approach was found to have a severe positive bias for sulfonic/sulfinic acids. To overcome this obstacle, a correlation was developed between non-adjusted PM6 pKa values and the corresponding experimentally obtained/estimated acidity constants for a range of representative alkyl, aryl and halogen-substituted sulfonic acids. Application of this correction to the PM6 values allows for extension of this computational method to a new acid functional group. When used to estimate isomer-specific pKa values for the C1 through C8 PFSAs, the modified PM6 approach suggests an adjusted pKa range from -5.3 to -9.0, indicating that all members of this class of well-known environmental contaminants will be effectively completely dissociated in aquatic systems.

  7. p Ka determinations of xanthene derivates in aqueous solutions by multivariate analysis applied to UV-Vis spectrophotometric data

    Science.gov (United States)

    Batistela, Vagner Roberto; Pellosi, Diogo Silva; de Souza, Franciane Dutra; da Costa, Willian Ferreira; de Oliveira Santin, Silvana Maria; de Souza, Vagner Roberto; Caetano, Wilker; de Oliveira, Hueder Paulo Moisés; Scarminio, Ieda Spacino; Hioka, Noboru

    2011-09-01

    Xanthenes form to an important class of dyes which are widely used. Most of them present three acid-base groups: two phenolic sites and one carboxylic site. Therefore, the p Ka determination and the attribution of each group to the corresponding p Ka value is a very important feature. Attempts to obtain reliable p Ka through the potentiometry titration and the electronic absorption spectrophotometry using the first and second orders derivative failed. Due to the close p Ka values allied to strong UV-Vis spectral overlap, multivariate analysis, a powerful chemometric method, is applied in this work. The determination was performed for eosin Y, erythrosin B, and bengal rose B, and also for other synthesized derivatives such as 2-(3,6-dihydroxy-9-acridinyl) benzoic acid, 2,4,5,7-tetranitrofluorescein, eosin methyl ester, and erythrosin methyl ester in water. These last two compounds (esters) permitted to attribute the p Ka of the phenolic group, which is not easily recognizable for some investigated dyes. Besides the p Ka determination, the chemometry allowed for estimating the electronic spectrum of some prevalent protolytic species and the substituents effects evaluation.

  8. Perfil da sociedade natalense frente aos resíduos sólidos urbanos sob o olhar do gari

    Directory of Open Access Journals (Sweden)

    Brunna Soares Rodrigues

    2014-08-01

    Full Text Available O presente trabalho tem como objetivo mostrar uma análise crítica referente a postura da sociedade da cidade do Natal/RN diante dos resíduos sólidos urbanos por meio do olhar do gari. As pesquisas se baseiam no estudo da percepção de garis que trabalham em quatro locais distintos, sendo estes: O Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte - IFRN Campus Natal Central, o Parque das Dunas, o centro comercial do Alecrim e a praia de Ponta Negra, onde foram entrevistados individualmente tendo por base uma entrevista semi-estruturada. Através das análises das respostas obtidas percebeu-se que a população natalense seja ela infantil, jovem ou adulta necessita que uma educação ambiental seja trabalhada a fim de que o quadro relacionado aos resíduos mude, melhorando, portanto, a qualidade do meio ambiente e da vida das pessoas.

  9. PAVIMENTO INTERTRAVADO PERMEÁVEL COM RESÍDUOS DA CONSTRUÇÃO CIVIL E MICROESFERAS DE PARAFINA

    Directory of Open Access Journals (Sweden)

    Thais Ferreira dos Santos

    2017-02-01

    Full Text Available O trabalho visa o desenvolvimento da produção de pisos Intertravados porosos com a utilização de agregado miúdo reciclado a partir de moagem de resíduo da demolição de paredes. A escolha do agregado reciclado foi motivada devido à grande demanda de resíduos produzida pela indústria da construção civil, sendo que um problema recorrente é o descarte dos mesmos, visto que as áreas destinadas a este fim se têm apresentado cada vez mais escassas e com o objetivo de reduzir custos. O carácter permeável foi obtido com a utilização de material espaçador, ou seja, formador de porosidade residual, que permita o fluxo de líquido através do pavimento. Neste trabalho foi utilizado a técnica de utilização de microesferas de parafina dispersas no interior da massa, que após a produção e cura da peça foi retirada por meio da aplicação de calor, proporcionando a vaporização da parafina adicionada ao processo.

  10. O aproveitamento do resíduo da indústria do sisal no controle de larvas de mosquitos

    Directory of Open Access Journals (Sweden)

    Pizarro Ana Paula B.

    1999-01-01

    Full Text Available Descreve-se o aproveitamento do resíduo do desfibramento das folhas de Agave sisalana, como um larvicida para o combate a mosquitos transmissores de doenças tropicais. Durante 24 horas, larvas de Aedes aegypti e Culex quinquefasciatus foram expostas a concentrações diferentes do extrato da planta para determinar as concentrações letais. Para A. aegypti foi constatada a CL50 em 322ppm e para C. quinquefasciatus em 183ppm. Foi investigada a ação de saponinas existentes na planta, ficando evidenciado que o resíduo de A. sisalana é ativo através da interação de vários dos seus componentes. Este extrato poderá ser utilizado em campo, na concentração de 100ppm para C. quinquefasciatus com um aumento do tempo de exposição para três dias, obtendo-se uma mortalidade de 100% das larvas. Este produto, porém, não é recomendado para o controle de A. aegypti, devido à necessidade de uma alta concentração para a obtenção de 100% de mortalidade das larvas e ao fato destas se desenvolverem preferencialmente em água potável.

  11. Relação entre Otimismo e Autonomia Funcional em indivíduos com Esclerose Múltipla

    Directory of Open Access Journals (Sweden)

    Luísa Pedro

    2012-07-01

    Full Text Available Objetivo: O presente estudo tem como objetivo verificar a relação existente entre autonomia funcional e otimismo. Método: Os participantes são 280 indivíduos portadores de esclerose múltipla (EM diagnosticada há mais de um ano em que a maioria são mulheres, com nível elevado de escolaridade, maioritariamente casados, e a trabalhar em regime de tempo integral. A funcionalidade foi avaliada com a Escala de Impacto de Participação e Autonomia – IPA, e o otimismo com o Life Orientation Test – Revised (LOT-R. A recolha de dados realizou-se em unidades de saúde de Lisboa e cumpriu as regras conforme a Declaração de Helsínquia. Conclusão: Os resultados mostram que existem valores de correlação estatisticamente significativos, mas moderados entre as dimensões da LOT-R e IPA, sugerindo que o otimismo é um fator importante para a autonomia funcional dos indivíduos portadores de EM.

  12. Potencial poluidor de resíduo sólido da Samarco Mineração: estudo de caso da barragem de Germano

    OpenAIRE

    Pires,José Maurício Machado; Lena,Jorge Carvalho de; Machado,Carlos Cardoso; Pereira,Reginaldo Sérgio

    2003-01-01

    Foram estudadas amostras de resíduo sólido da Barragem de Germano, da Samarco Mineração S.A. Tal barragem localiza-se no município de Mariana-MG. Sua principal função é coletar os efluentes do tratamento do minério de ferro processado no Complexo de Germano. Este resíduo foi submetido a testes de classificação, de acordo com as Normas ABNT 10004, 10005, 10006 e 10007. Constatou-se que o resíduo é classe III (inerte) e que os testes mostraram a grande capacidade deste material na retenção de m...

  13. EFEITO DA INCORPORAÇÃO DE RESÍDUO DA SERRAGEM DE GRANITO EM MASSA DE CERÂMICA VERMELHA

    Directory of Open Access Journals (Sweden)

    Carlos Maurício Fontes Vieira

    2010-05-01

    Full Text Available Este artigo é fruto de uma pesquisa que tem por objetivo melhorar as propriedades tecnológicas de uma massa de cerâmica vermelha utilizada para fabricação de telhas no município de Campos dos Goytacazes-RJ, com incorporação de resíduo da serragem de granito da região de Cachoeiro de Itapemirim-ES. Os resultados demonstraram que o resíduo da serragem de granito se constitui como uma alternativa tecnológica para a melhoria da qualidade das telhas cerâmicas atualmente fabricadas na região de Campos dos Goytacazes. Além disso, o segmento de cerâmica vermelha pode-se constituir como uma alternativa ambientalmente correta para o descarte deste tipo de resíduo.

  14. RECICLAGEM DE RESÍDUOS SÓLIDOS DA CONSTRUÇÃO CIVIL: REVISÃO, FUNCIONAMENTO E APLICAÇÃO

    OpenAIRE

    Cachali, Noemy Juliana; Faculdade Araguaia.; Ribeiro Prata Alonso, Ressiliane; Faculdade Araguaia.; Ucker, Fernando Ernesto; Faculdade Araguaia.; Alonso, Alexandre Antonio; UFG

    2014-01-01

    Este artigo relata um estudo sobre os processos de reciclagem da construção civil no Brasil, pois o que pode parecer lixo para a maioria das pessoas são soluções para outras: trata-se da reciclagem dos resíduos de construção e demolição (RCD). A construção civil é a área que mais geram resíduos, cabendo a cada cidadão preocupar com os resíduos que são descartados, os chamados entulhos. A reciclagem de entulhos podem gerar inúmeras vantagens, sejam elas econômicas, ambientais e de qualidade. C...

  15. Análise da aplicação de resíduo de borracha de pneus em piso tátil intertravado de concreto

    OpenAIRE

    Fabiana Maria da Silva

    2014-01-01

    Resumo: O reaproveitamento de resíduos na construção civil tem sido uma alternativa viável para diminuir o consumo de materiais naturais e a disposição inadequada dos resíduos no meio ambiente. Neste trabalho avaliou-se o reaproveitamento de resíduo de borracha de pneus, proveniente do processo de recauchutagem, em substituição parcial do agregado miúdo natural, para a produção de pisos táteis intertravados de concreto. O piso tátil de concreto é uma peça utilizada na pavimentação, que permit...

  16. OBSOLESCÊNCIA PROGRAMADA E MEIO AMBIENTE: A GERAÇÃO DE RESÍDUOS DE EQUIPAMENTOS ELETROELETRÔNICOS

    OpenAIRE

    Rossini, Valéria; Naspolini Sanches, Samyra Haydêe Dal Farra

    2017-01-01

    A obsolescência programada incrementa a produção e o consumo. O objetivo deste artigo é analisar a obsolescência programada e suas consequências ambientais sob o ponto de vista da geração de resíduos de equipamentos eletroeletrônicos. Discute-se a efetividade da Política Nacional de Resíduos Sólidos diante do aumento da geração de e-lixo provocado pelos atuais padrões de produção e consumo. Conclui-se que a atual legislação sobre resíduos sólidos ainda não apresenta eficácia para solucionar a...

  17. Compostagem de resíduos sólidos de frigorífico Composting of slaughterhouse solid waste

    Directory of Open Access Journals (Sweden)

    Mônica S. S. de M. Costa

    2009-02-01

    Full Text Available Em virtude da compostagem ser uma alternativa viável e eficiente no tratamento de resíduos agroindustriais, objetivou-se avaliá-la em resíduos provenientes do abate de bovinos e suínos. Confeccionaram-se 12 leiras de compostagem utilizando-se resíduos de frigorífico, palha de trigo e serragem de madeira. O processo foi avaliado pelo monitoramento diário da temperatura, observação da ocorrência de parâmetros indesejáveis (presença de odores desagradáveis e/ou amoniacais, formação de chorume e presença de moscas e larvas e pela capacidade de reciclagem de nutrientes. Os parâmetros indesejáveis foram observados, em média, nos primeiros cinco dias após a confecção das leiras; as temperaturas se elevaram, atingindo picos acima de 70 ºC; quanto à composição química do composto, esta apresentou teores relevantes de macro e micronutrientes demonstrando alto potencial de reciclagem. Recomenda-se a utilização de piso impermeável e estrutura de cobertura durante a compostagem. A freqüência de revolvimentos adotada (15 dias após a confecção da leira, seguida de revolvimentos semanais foi adequada. A melhor relação de peso encontrada foi de 7,2 kg de resíduos para cada kg de palha e 16,6 kg de resíduos para cada kg de serragem.Composting has been a viable and efficient alternative treatment to agroindustrial waste. This experiment was installed with the objective of analyzing the process of composting for slaughterhouse waste. Twelve piles of composting were prepared, using slaughterhouse waste, wheat straw and wood sawdust. The process was evaluated by daily temperature monitoring, observations of the occurrence of undesirable parameters (bad smell and/or ammoniacal smell, grease formation and presence of grubs and flies, as well as the capacity of recycling nutrients. The undesirable parameters were observed, on average, for the first five days after pile building; the temperatures increased, reaching 70 º

  18. Resíduos de agrotóxicos em frutos de tomate Pesticide residues in tomato fruits

    Directory of Open Access Journals (Sweden)

    Leslie Maria Segura Zavatti

    1999-03-01

    Full Text Available O uso intensivo de agrotóxicos em culturas de tomates tem causado preocupações quanto à provável contaminação do produto final. Este trabalho teve como objetivo monitorar, por dois anos consecutivos, em quatro propriedades de uma área altamente tecnificada, o uso de agrotóxicos em tomate irrigado durante seu desenvolvimento, quantificar os resíduos dos principais princípios ativos utilizados, e avaliar o grau de contaminação dos frutos colhidos. Foram analisados metamidofós, clorpirifós, captan, clorotalonil, endosulfan, lambda-cialotrina, e cobre. Para avaliar o grau de contaminação dos frutos foi validado um método de análise de resíduos múltiplos capaz de quantificar esses compostos. Os resíduos encontrados foram de fungicidas e inseticidas aplicados nas fases de frutificação e maturação: captan, 0,35 mg/kg, na Fazenda 2; clorotalonil, 0,16 mg/kg e 0,95 mg/kg, nas Fazendas 1 e 2, respectivamente; lambda-cialotrina, 0,03 mg/kg, na Fazenda 2; cobre, 2,03 mg/kg, 3,75 mg/kg e 1,44mg/kg, nas Fazendas 1, 2 e 3, respectivamente, e 0,95 mg/kg, 1,70 mg/kg e 2,31 mg/kg, na Fazenda 4. Não ocorreram resíduos dos inseticidas organofosforados, aplicados principalmente durante o desenvolvimento vegetativo da cultura. Não houve contaminação dos tomates pelos agrotóxicos analisados. Os resíduos que devem ser monitorados são os dos agrotóxicos aplicados na fase de maturação da cultura.The intensive use of pesticide in tomato crops have been causing concern about a possible contamination of the final product. This work aimed at monitoring, for two years, in four farms located in a high technology area, the use of pesticides in irrigated tomato crops, quantifying the main active ingredient residues and evaluating the contamination level of the fruits. The components analised were: methamidophos, chlorpyrifos, captan, chlorothalonil, endosulfan, lambda-cyhalothrin and copper oxychloride. In order to evaluate the contamination

  19. Comparação de inibições medulares entre indivíduos com doença de Parkinson e saudáveis

    Directory of Open Access Journals (Sweden)

    Carla Silva-Batista

    2013-06-01

    Full Text Available O objetivo do presente estudo foi comparar os níveis de inibição pré-sináptica (IPS e inibição recíproca (IR entre indivíduos com Doença de Parkinson e saudáveis e, a correlação entre essas inibições e a rigidez muscular e a severidade clínica de indivíduos com Doença de Parkinson (avaliadas através da Escala Unificada de Avaliação da Doença de Parkinson. Foram avaliados 11 indivíduos nos estágios 2 e 3 da doença e 13 indivíduos saudáveis pareados pela idade. A IPS foi menor em indivíduos com Doença de Parkinson (31,6% do que em saudáveis (67,1% (p = 0,02. A IR não diferiu entre indivíduos com Doença de Parkinson (26,9% e saudáveis (27,6% (p = 0,91. Adicionalmente, não foram detectadas correlações entre os níveis de IPS com a rigidez e a severidade clínica (p > 0,05. Portanto, mecanismos inibitórios não explicam totalmente a rigidez muscular e a severidade clinica da doença. Alterações entre ativação de músculos agonistas e antagonistas parecem estar relacionadas a influências supraespinhais anormais nos mecanismos espinhais decorrentes da doença.

  20. Socializar para Adequar-se: Como Redes Sociais Intraorganizacionais Podem Influenciar a Adequação Indivíduo-Organização

    Directory of Open Access Journals (Sweden)

    Maria Gabriela de Cássia Miranda

    2017-09-01

    Full Text Available A adequação indivíduo-organização refere-se à congruência dos valores individuais do funcionário aos valores organizacionais. Essa adequação é explorada em diversos resultados individuais e organizacionais, tais como: desempenho, comprometimento, motivação, etc. Embora vários fatores tenham sido identificados como responsáveis por essa adequação, poucos estudos brasileiros exploraram quantitativamente o papel das redes sociais dentro das empresas. Esses relacionamentos construídos e mantidos dentro da organização são identificados pelos padrões de comunicação e interação entre os indivíduos, e podem interferir no nível de adequação indivíduo-organização. O objetivo desta pesquisa é compreender como as características das redes sociais, tais como grau de relacionamento, proximidade entre os atores e nível de intermediação, podem influenciar o nível de adequação indivíduo-organização. Realizou-se um survey com 116 funcionários de micro e pequenas empresas do setor de serviços. Os resultados da análise Partial Least Squares (PLS indicam que o grau de relacionamento entre os funcionários influencia o nível de adequação indivíduo-organização. Ou seja, quanto mais o funcionário interage com seus colegas de trabalho, maior a probabilidade de adequação dos valores do indivíduo com os da organização.

  1. Reaproveitamento do resíduo de gesso na execução de revestimento interno de vedação vertical

    Directory of Open Access Journals (Sweden)

    Yêda Vieira Póvoas Tavares

    Full Text Available O gesso está sendo utilizado em larga escala como revestimento interno de paredes por ser um material barato e de alto desempenho. No entanto, há uma grande geração de resíduo, o que constitui um problema econômico e ambiental. Embora se observe um interesse crescente no uso desse resíduo como revestimento de vedação interna, há um grande desconhecimento a respeito de sua tecnologia de produção, bem como de seu comportamento. O objetivo desta pesquisa é estudar o desempenho desse material através dos ensaios de dureza superficial, resistência à compressão e de aderência, além da apresentação da técnica de execução do revestimento a partir do aproveitamento do resíduo de gesso. Foram realizados ensaios utilizando-se misturas com 0%, 5% e 10% de resíduo com 0,6 mm de diâmetro máximo, e também realizadas visitas técnicas aos canteiros de obras para a avaliação e a determinação da técnica de execução mais apropriada para a aplicação do revestimento. Os resultados mostraram que a adição de resíduos não prejudica excessivamente as propriedades estudadas, sendo admissível até 10% de resíduo de gesso na produção da nova argamassa, respeitando-se as recomendações da técnica construtiva.

  2. Optimization of crude oil degradation by Dietzia cinnamea KA1, capable of biosurfactant production.

    Science.gov (United States)

    Kavynifard, Amirarsalan; Ebrahimipour, Gholamhossein; Ghasempour, Alireza

    2016-05-01

    The aim of this study was isolation and characterization of a crude oil degrader and biosurfactant-producing bacterium, along with optimization of conditions for crude oil degradation. Among 11 isolates, 5 were able to emulsify crude oil in Minimal Salt Medium (MSM) among which one isolate, named KA1, showed the highest potency for growth rate and biodegradation. The isolate was identified as Dietzia cinnamea KA1 using morphological and biochemical characteristics and 16S rRNA gene sequencing. The optimal conditions were 510 mM NaCl, pH 9.0, 35 °C, and minimal requirement of 46.5 mM NH4 Cl and 2.10 mM NaH2 PO4 . Gravimetric test and Gas chromatography-Mass spectroscopy technique (GC-MS) showed that Dietzia cinnamea KA1 was able to utilize and degrade 95.7% of the crude oil after 5 days, under the optimal conditions. The isolate was able to grow and produce biosurfactant when cultured in MSM supplemented with crude oil, glycerol or whey as the sole carbon sources, but bacterial growth was occurred using molasses with no biosurfactant production. This is the first report of biosurfactant production by D. cinnamea using crude oil, glycerol and whey and the first study to report a species of Dietzia degrading a wide range of hydrocarbons in a short time. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  3. Evidence for an Elevated Aspartate pKa in the Active Site of Human Aromatase*

    Science.gov (United States)

    Di Nardo, Giovanna; Breitner, Maximilian; Bandino, Andrea; Ghosh, Debashis; Jennings, Gareth K.; Hackett, John C.; Gilardi, Gianfranco

    2015-01-01

    Aromatase (CYP19A1), the enzyme that converts androgens to estrogens, is of significant mechanistic and therapeutic interest. Crystal structures and computational studies of this enzyme shed light on the critical role of Asp309 in substrate binding and catalysis. These studies predicted an elevated pKa for Asp309 and proposed that protonation of this residue was required for function. In this study, UV-visible absorption, circular dichroism, resonance Raman spectroscopy, and enzyme kinetics were used to study the impact of pH on aromatase structure and androstenedione binding. Spectroscopic studies demonstrate that androstenedione binding is pH-dependent, whereas, in contrast, the D309N mutant retains its ability to bind to androstenedione across the entire pH range studied. Neither pH nor mutation perturbed the secondary structure or heme environment. The origin of the observed pH dependence was further narrowed to the protonation equilibria of Asp309 with a parallel set of spectroscopic studies using exemestane and anastrozole. Because exemestane interacts with Asp309 based on its co-crystal structure with the enzyme, its binding is pH-dependent. Aromatase binding to anastrozole is pH-independent, consistent with the hypothesis that this ligand exploits a distinct set of interactions in the active site. In summary, we assign the apparent pKa of 8.2 observed for androstenedione binding to the side chain of Asp309. To our knowledge, this work represents the first experimental assignment of a pKa value to a residue in a cytochrome P450. This value is in agreement with theoretical calculations (7.7–8.1) despite the reliance of the computational methods on the conformational snapshots provided by crystal structures. PMID:25425647

  4. Transmission characteristic of graphene/TiO2 paper measured at Ka-band

    Science.gov (United States)

    Agusu, La; Mitsudo, Seitaro; Ahmad, La Ode; Herdianto, Fujii, Yutaka; Ishikawa, Yuya; Furuya, Takahashi; Ramadhan, La Ode Ahmad Nur

    2017-01-01

    The commercial telecommunication system in future would explore the electromagnetic spectrum with higher frequency than used now, because it requires higher speed of transmission data. Using the millimeter waves (mmW) with frequency ranging from 30 to 300 GHz, such requirement could be fulfilled. The upcoming 5G cellular technology is expected to use frequency 30 GHz or higher. Then materials with a specific characteristic at the mmW range are interesting to be explored and investigated. Here, we report the synthesis process of graphene/TiO2 deposited on paper and their transmission characteristics to the electromagnetic energy at frequency 27-40 GHz (Ka-Band). The reduced graphene oxide (rGO) was synthesized by a modified Hummers method with introduction of microwave irradiation in the process. rGO and TiO2 were mixed in ethanol solution and deposited on the paper by a spraying technique. Transmission coefficient of electromagnetic wave energy at Ka-Band was measured by using the millimeter vector network analyzer. Conductivity of rGO is 1.89 Scm-1 and for the graphene/TiO2 with TiO2 content is up to 50%, conductivity is down to Scm-1 Graphene/TiO2 layer with thickness of 60).lm and TiO2 loading up to 25% can has the transmission coefficient of -4 dB at the middle frequency of 31 GHz and bandwidth of 2.2 GHz. This can be useful as the electromagnetic interference shielding material at Ka-band.

  5. Ka eakad tahavad ja suudavad töötada / Kadi Pärnits

    Index Scriptorium Estoniae

    Pärnits, Kadi, 1965-

    2005-01-01

    Ilmunud ka: Sakala 4. mai lk. 2, Lääne Elu 5. mai, lk. 2, Koit 5. mai, lk. 6, Videvik 5. mai lk. 2, Harjumaa 6. mai, lk. 2, Põhjarannik 6. mai, lk. 2, Severnoje Poberezhje 6. mai lk. 2, Hiiu Leht 3. juuni lk. 2, Valgamaalane 9. juuni lk. 2, Pärnu Postimees 5. juuli lk. 15, Vooremaa 26. juuli lk. 2. Sotsiaaldemokraatide algatusest kehtivat töölepinguseadust muuta ja võtta tööandjatelt õigus vabaneda eakast töötajast kohe, kui viimane saab 65 aastaseks

  6. MARKETINŠKA STRATEGIJA ZA SPLETNO TRGOVINO KUPONI.ENAA.COM

    OpenAIRE

    Marzidošek, Dean

    2016-01-01

    Marketinška strategija za spletne trgovine je precej drugačna od klasične marketinške strategije. Seveda upošteva enake zakonitosti, vendar so v večini primerov klasični oglaševalski kanali, kot so na primer televizija, radio, tisk in podobno, popolnoma odsotni. Na drugi strani jih nadomeščajo digitalni kanali v popolnosti, ki se jim je treba tudi bolj podrobno posvetiti v spletni strategiji. Prednost digitalnih kanalov je v zelo dobri in hitri merljivosti rezultatov, dostopnost takšnih oglaš...

  7. An occurrence of approx. 74 ka Youngest Toba tephra from the western continental margin of India

    Digital Repository Service at National Institute of Oceanography (India)

    Pattan, J.N.; Shane, P.; Pearce, N.J.G.; Banakar, V.K.; Parthiban, G.

    . Navalgund and Dr M. S. Narayanan du r- ing the course of this work. Useful discussions with Dr P. S. Desai and Dr A. Sarkar are also thankfully acknow l edged. Received 28 July 2000; revised accepted 3 January 2001 An occurrence of ~ 7 4 ka.... The occurrence of Y TT in the west, north - west, south - west and recently north - east in the South China Sea Basin 17 , suggests wind direction du r ing YTT was not in one way. YTT occurred between oxygen isotope stage 5a and 4, a period of ice growth...

  8. Health of primary teachers in Obalno-kraška region

    OpenAIRE

    Lavrič, Katja

    2013-01-01

    The purpose of the dissertation was to evaluate the health of elementary school teachers teaching in the southwestern part of Slovenia, in the so-called Obalno-kraška region. The main goals were to determine how often do these teachers engage in physical activity, how frequently are they absent from work due to health problems, how often do they feel tense, under stress or under severe pressure and how do they deal with it, how many of them smoke or live in a smoking environment, what is thei...

  9. Ka Band Phase Locked Loop Oscillator Dielectric Resonator Oscillator for Satellite EHF Band Receiver

    Directory of Open Access Journals (Sweden)

    S. Coco

    2008-01-01

    Full Text Available This paper describes the design and fabrication of a Ka Band PLL DRO having a fundamental oscillation frequency of 19.250 GHz, used as local oscillator in the low-noise block of a down converter (LNB for an EHF band receiver. Apposite circuital models have been created to describe the behaviour of the dielectric resonator and of the active component used in the oscillator core. The DRO characterization and measurements have shown very good agreement with simulation results. A good phase noise performance is obtained by using a very high Q dielectric resonator.

  10. Proposal for a Joint NASA/KSAT Ka-band RF Propagation Terminal at Svalbard, Norway

    Science.gov (United States)

    Volosin, Jeffrey; Acosta, Roberto; Nessel, James; McCarthy, Kevin; Caroglanian, Armen

    2010-01-01

    This slide presentation discusses the placement of a Ka-band RF Propagation Terminal at Svalbard, Norway. The Near Earth Network (NEN) station would be managed by Kongsberg Satellite Services (KSAT) and would benefit NASA and KSAT. There are details of the proposed NASA/KSAT campaign, and the responsibilities each would agree to. There are several reasons for the placement, a primary reason is comparison with the Alaska site, Based on climatological similarities/differences with Alaska, Svalbard site expected to have good radiometer/beacon agreement approximately 99% of time.

  11. submitter Manufacture and Test of ITER 10-kA HTSCL Prototypes

    CERN Document Server

    Zhou, Tingzhi; Liu, Chenglian; Lu, Kun; Ran, Qingxiang; Song, Yuntao; Niu, Erwu; Bauer, Pierre; Devred, Arnaud; Lee, Seungje; Taylor, Thomas; Yang, Yifeng

    2016-01-01

    To carry current for the ITER correction coils, the 10-kA high-temperature superconducting current leads studied here are designed. Current leads provide the transition from 4.5-K low temperature to room temperature. This paper summarizes the major design features of the prototypes, which is followed by a discussion of the manufacturing and testing. The test results approved their excellent performance on low joint resistance and long loss-of-flow accident time. The overheating time, mass flow, and heat loads to 5-K ends also reached the expectation.

  12. Pension tuleb maal tasuta koju ka tulevikus / Siim-Valmar Kiisler

    Index Scriptorium Estoniae

    Kiisler, Siim, 1965-

    2008-01-01

    Regionaalminister Siim-Valmar Kiisleri sõnul toetas riigikogu sotsiaalkomisjon tema ettepanekut ning otsustas kirjutada eelnõusse sisse sätte, et hajaasustusega piirkondades ning asulates, kus pangateenused pole kättesaadavad, jääb pensionide ning hüvitiste kojukanne edaspidigi tasuta. Ilmunud ka: Harju Elu 17. okt. lk. 2, Vooremaa 16. okt. lk. 2; Harju Elu 17. okt. lk. 2; Kuulutaja 17. okt. lk. 4; Võrumaa Teataja 18. okt. lk. 2; Meie Maa 16. okt. lk. 2; Koit 21. okt. lk. 6; Sakala 22. okt. lk. 2; Oma Saar 23. okt. lk. 5

  13. Advanced mobile satellite communications using COMETS satellite in MM-wave and Ka-band

    Science.gov (United States)

    Ohmori, Shingo; Isobe, Shunkichi; Takeuchi, Makoto; Naito, Hideyuki

    1993-01-01

    Early in the 21st century, the demand for personal communications using mobile, hand-held, and VSAT terminals will rapidly increase. In a future system, many different types of services should be provided with one-hop connection. The Communications Research Laboratory (CRL) has studied a future advanced mobile satellite communications system using millimeter wave and Ka band. In 1990, CRL started the Communications and Broadcasting Engineering Test Satellite (COMETS) project. The satellite has been developed in conjunction with NASDA and will be launched in 1997. This paper describes the COMETS payload configuration and the experimental system for the advanced mobile communications mission.

  14. "Parim" on subjektiivne, aga kõhutundest ka ei piisa / Inga Kuusik

    Index Scriptorium Estoniae

    Kuusik, Inga, 1961-

    2007-01-01

    Ilmunud ka: Finansovõi Menedzhment : infovõpusk nr. 13 apr. lk. 6-7. Saku Õlletehase uus finantsjuht oma tööst tubakatootja Imperial Tobacco Grupi Kesk-Aasia regiooni finantsdirektorina Kõrgõzstanis, Saku Õlletehase kapitali struktuurist, finantsdirektori rollist ettevõttes ja tööjõu värbamisest Saku Õlletehases. Lisad: Saku Õlletehas 2006: mõõdukas käibe-, aga suur kasumikasv; Tabel: Saku Õlletehase dividendimaksed 1997-2007

  15. The Development and Demonstration of a 360m/10 kA HTS DC Power Cable

    Science.gov (United States)

    Xiao, Liye

    With the quick development of renewable energy, it is expected that the electric power from renewable energy would be the dominant one for the future power grid. Due to the specialty of the renewable energy, the HVDC power transmission would be very useful for the transmission of electric power from renewable energy. DC power cable made of High Tc Superconductor (HTS) would be a possible alternative for the construction of HVDC power transmission system. In this chapter, we report the development and demonstration of a 360 m/10 kA HTS DC power cable and the test results.

  16. Analysis of Standards Efficiency in Digital Television Via Satellite at Ku and Ka Bands

    Directory of Open Access Journals (Sweden)

    Landeros-Ayala Salvador

    2013-06-01

    Full Text Available In this paper, an analysis on the main technical features of digital television standards for satellite transmission is carried out. Based on simulations and link budgets, the standard with the best operational performance is defined, based on simulations and link budget analysis, as well as a comparative efficiency analysis is conducted for the Ku and Ka bands for both transparent and regenerative transponders in terms of power, bandwidth, information rate and link margin, including clear sky, uplink rain, downlink rain and rain in both.

  17. Isolamento do ruído de impacto com resíduos de PET e PNEU - Análise preliminar de dados

    Directory of Open Access Journals (Sweden)

    Maria Luiza de U. Carvalho

    2014-09-01

    Full Text Available O crescimento populacional tem gerado diversos problemas na sociedade contemporânea. Dentre eles estão o aumento do descarte de resíduos urbanos e a carência de moradia de baixo custo. O objetivo do presente trabalho foi estudar a potencialidade da utilização de dois resíduos sólidos na confecção de pisos flutuantes para redução do ruído de impacto através de parcerias com Furnas Centrais Elétricas e UFG. As amostras foram confeccionadas com o flake de garrafas PET e a raspa de pneus inservíveis aplicados em misturas cimentícias nas proporções de 1:4 e 1:5 (cimento: resíduo. Estas tinham espessuras diferentes sobre as quais tiveram a colocação de um contrapiso móvel com dois tipos de revestimento cerâmico. Para os ensaios foram consultadas a ISO 140-7 quanto aos procedimentos de medição para os níveis de pressão sonora de impacto (L’nT e a ISO 717-2 para a determinação do valor único ponderado (L’nT,w. Dentre os resultados, 5 amostras com PET obtiveram L’nT,w superior às demais amostras. Conclui-se que as amostras com resíduo de PET tiveram desempenho superior às amostras com resíduo de pneu. Contudo, ambos resíduos possuem um uso potencial na aplicação de pisos flutuantes nas proporções estudadas, porém necessitam maiores estudos para aplicação técnica. Palavras-Chave: isolamento do ruído de impacto, resíduo de PET, resíduo de pneu.

  18. Reaproveitamento do resíduo de gesso na execução de revestimento interno de vedação vertical

    OpenAIRE

    Tavares, Yêda Vieira Póvoas; Lordsleem Júnior, Alberto Casado; Schmitz, Italo Benjamin Telles Arruda; John, Vanderley Moacyr

    2010-01-01

    O gesso está sendo utilizado em larga escala como revestimento interno de paredes por ser um material barato e de alto desempenho. No entanto, há uma grande geração de resíduo, o que constitui um problema econômico e ambiental. Embora se observe um interesse crescente no uso desse resíduo como revestimento de vedação interna, há um grande desconhecimento a respeito de sua tecnologia de produção, bem como de seu comportamento. O objetivo desta pesquisa é estudar o desempenho desse material atr...

  19. Resíduo agroindustrial na formação de mudas ornamentais irrigadas com água residuária

    OpenAIRE

    Aline Costa Ferreira; Viviane F. Silva; Kalyne S. A. de Brito; Elka Costa Nascimento

    2014-01-01

    O reuso de água de esgoto tratada juntamente com o uso de resíduos industriais para a formação de mudas de girassol ornamental vem sendo uma alternativa econômica para o estado da Paraíba. Nesse contexto, a pesquisa foi realizada objetivando-se a utilização de resíduo agroindustrial na formação de mudas ornamentais irrigadas com água residuária. Desenvolvido em ambiente protegido na Universidade Federal de Campina Grande – UFCG, localizado no Estado da Paraíba-PB, utilizaram-se os seguintes t...

  20. Influência do sistema renina angiotensina na redução da hipertrofia de ventrículo esquerdo em indivíduos hiperreatores

    OpenAIRE

    Antonio Carlos Avanza Junior

    2005-01-01

    Introdução: Hipertrofia de ventrículo esquerdo (HVE) detectada pelo ecocardiograma é um preditor independente de morbidade e mortalidade em indivíduos hipertensos e na população em geral. Na população adulta existe uma modesta correlação entre a medida casual da pressão arterial (PA) e HVE . A HVE pode preceder a hipertensão arterial (HA) sustentada. Existem trabalhos que demonstram que indivíduos normotensos e com resposta exagerada da PA ao esforço tem alta probabilidade de desenvolvimento ...

  1. EFEITO DA ADIÇÃO DE RESÍDUOS DE PODA DA ERVA-MATE EM PAINÉIS AGLOMERADOS

    Directory of Open Access Journals (Sweden)

    Amelia Guimarães Carvalho

    2015-02-01

    Full Text Available O objetivo deste trabalho foi avaliar a viabilidade técnica da utilização de resíduos da poda de erva-mate na produção de painéis aglomerados. Foram produzidos painéis de aglomerados nas seguintes composições: 100% de pinus (T1, 100% de resíduos de erva-mate com casca (T2, 100% de resíduos de erva-mate sem casca (T3, 50% de pinus com 50% de resíduos de erva-mate com casca (T4 e 50% de pinus com 50% de resíduos de erva-mate sem casca (T5. Os painéis foram produzidos com o adesivo ureia-formaldeído a um teor de 8%, com ciclo de prensagem de 8 min, a 170 ºC e 30 kgf.cm-2. Os painéis produzidos com os resíduos de erva-mate apresentaram menor umidade de equilíbrio higroscópico (UEH, assim como menor absorção de água após 24 h de imersão (AA 24 h. Não houve diferença estatística entre os tratamentos quanto às propriedades de compressão, arrancamento de parafusos, dureza Janka e ligação interna. Os painéis produzidos com resíduos de erva-mate, assim como as misturas deles com partículas de pinus, apresentaram valores de módulo de ruptura à flexão estática inferiores aos estipulados pela norma brasileira NBR 14810-2 (ABNT, 2002. Como não atenderam a um dos requisitos mínimos, painéis produzidos com resíduos de erva-mate não devem ser utilizados em substituição aos painéis de madeira aglomerada.

  2. QUALIDADE DE CHAPAS DE PARTÍCULAS DE MADEIRA AGLOMERADA FABRICADAS COM RESÍDUOS DE UMA INDÚSTRIA DE CELULOSE

    OpenAIRE

    Paulo Renato Schneider; Elio José Santini; Clovis Roberto Haselein; Cristiane Pedrazzi

    2006-01-01

    Este trabalho teve como objetivo avaliar a qualidade de chapas aglomeradas fabricadas com resíduos da madeira de Eucalyptus saligna, resultantes da picagem das toras para a confecção de cavacos utilizados na produção de celulose. As chapas foram produzidas com dois tipos de resíduos, palitos e serragem, sendo utilizados puros. O adesivo usado foi à base de uréia-formaldeído em proporções de 4; 8 e 12%, com base na massa seca das partículas, e as densidades nominais das chapas foram de 0,55; 0...

  3. Resíduos da construção civil em Araguari-MG : do diagnóstico à proposta de um modelo gerencial proativo

    OpenAIRE

    Marques, Rogério Borges

    2007-01-01

    Levantamentos recentes realizados em diversas cidades brasileiras mostram que os RCD Resíduos da Construção e Demolição representam, em alguns casos, mais de 50% da massa dos resíduos sólidos urbanos. Os municípios têm encontrado dificuldades para gerenciar de forma eficaz as grandes quantidades de RCD e solucionar o problema das deposições irregulares que comprometem a qualidade de vida da população e ocasionam sérios problemas sócio-ambientais e sanitários. Este trabalho fe...

  4. Resíduos sólidos e meio ambiente : a sistematização do lixo no direito brasileiro

    OpenAIRE

    Cecília Toscano Vieira Pinto, Ana

    2004-01-01

    Os resíduos sólidos conhecidos vulgarmente como lixo , é um problema que afeta todos os setores da sociedade, encontrando-se vinculado à degradação do meio ambiente. Apesar de estudado por outras áreas, principalmente a de Engenharia e a de Medicina, não recebeu da seara jurídica o devido enfoque, o que só aumenta a dramaticidade da questão. A presente dissertação possui como objetivo descrever a normatização relativa ao tratamento dos resíduos sólidos no Direito Brasileiro e ...

  5. Ocorrência e comportamento ambiental de resíduos de antibióticos de uso veterinário

    OpenAIRE

    Rafael Marques Pereira Leal

    2012-01-01

    Muitos antibióticos de uso veterinário não são totalmente metabolizados no organismo animal, ocasionando a presença de resíduos destes compostos em várias matrizes ambientais, tais como estercos animais, solos e sedimentos fluviais. A ocorrência destes resíduos no ambiente pode favorecer a resistência de microrganismos aos agentes antibióticos, ocasionar problemas de ordem toxicológica em determinados organismos e, além disso, interferir nos ciclos biogeoquímicos mediados por microrganismos. ...

  6. Características clínicas e oftalmológicas de indivíduos com necessidades especiais institucionalizados no estado de Pernambuco, Brasil

    Directory of Open Access Journals (Sweden)

    Priscila de Almeida Jorge

    2011-04-01

    Full Text Available OBJETIVO: Descrever as características clínicas e oftalmológicas encontrados em indivíduos institucionalizados, com necessidades especiais no estado de Pernambuco. MÉTODOS: Realizou-se projeto multidisciplinar em 37 pacientes, com necessidades especiais, institucionalizados na Comunidade Rodolfo Aureliano (CRAUR, unidade da Fundação da Criança e do Adolescente (FUNDAC em Recife-PE. A faixa etária dos indivíduos institucionalizados variou de seis a 30 anos, média de 18,8 ± 5,1 anos. O sexo masculino foi mais prevalente com 35 indivíduos (94,5%. Consideraram-se como indivíduos institucionalizados, aqueles que vivem abrigados em instituições mantidas pelo Estado. Foi feito estudo de corte transversal, verificando-se os principais achados clínicos e oftalmológicos destes indivíduos. Realizou-se o exame oftalmológico completo nos casos, com boa colaboração e de acordo com protocolo pré-estabelecido. RESULTADOS: Uso de álcool na gravidez foi relatado por nove mães (24,3%. Verificou-se a presença de retardo mental grave em 22 casos (59,4 %, paralisia cerebral e epilepsia em sete (18,9% indivíduos cada. Foi possível a realização do exame oftalmológico completo em 24 indivíduos (64,8%. Detectou-se cegueira legal em dez casos (41,6%. Os diagnósticos oftalmológicos mais encontrados foram ambliopia, erro refracional e phthisis bulbi em três casos (12,5% cada. Estrabismo foi encontrado em dois casos (8,3%. CONCLUSÃO: Os achados oftalmológicos revelaram a importância do exame oftalmológico em indivíduos com necessidades especiais institucionalizados. A associação com múltiplas deficiências, tais como: doenças neuropsiquiátricas, contribuiu para o maior grau de dificuldade na avaliação e condução dos casos.

  7. Experimental determination of net protein charge and A(tot) and K(a) of nonvolatile buffers in human plasma.

    Science.gov (United States)

    Staempfli, Henry R; Constable, Peter D

    2003-08-01

    The mechanism for an acid-base disturbance can be determined by using the strong ion approach, which requires species-specific values for the total concentration of plasma nonvolatile buffers (Atot) and the effective dissociation constant for plasma weak acids (Ka). The aim of this study was to experimentally determine Atot and Ka values for human plasma by using in vitro CO2 tonometry. Plasma Pco2 was systematically varied from 25 to 145 Torr at 37 degrees C, thereby altering plasma pH over the physiological range of 6.90-7.55, and plasma pH, Pco2, and concentrations of quantitatively important strong ions (Na+, K+, Ca2+, Mg2+, Cl-, lactate) and buffer ions (total protein, albumin, phosphate) were measured. Strong ion difference was estimated, and nonlinear regression was used to calculate Atot and Ka from the measured pH and Pco2 and estimated strong ion difference; the Atot and Ka values were then validated by using a published data set (Figge J, Rossing TH, and Fencl V, J Lab Clin Med 117: 453-467, 1991). The values (mean +/- SD) were as follows: Atot = 17.2 +/- 3.5 mmol/l (equivalent to 0.224 mmol/g of protein or 0.378 mmol/g of albumin); Ka = 0.80 +/- 0.60 x 10-7; negative log of Ka = 7.10. Mean estimates were obtained for strong ion difference (37 meq/l) and net protein charge (13+.0 meq/l). The experimentally determined values for Atot, Ka, and net protein charge should facilitate the diagnosis and treatment of acid-base disturbances in critically ill humans.

  8. Unraveling the sequence and structure of the protein osteocalcin from a 42 ka fossil horse

    Science.gov (United States)

    Ostrom, Peggy H.; Gandhi, Hasand; Strahler, John R.; Walker, Angela K.; Andrews, Philip C.; Leykam, Joseph; Stafford, Thomas W.; Kelly, Robert L.; Walker, Danny N.; Buckley, Mike; Humpula, James

    2006-04-01

    We report the first complete amino acid sequence and evidence of secondary structure for osteocalcin from a temperate fossil. The osteocalcin derives from a 42 ka equid bone excavated from Juniper Cave, Wyoming. Results were determined by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-MS) and Edman sequencing with independent confirmation of the sequence in two laboratories. The ancient sequence was compared to that of three modern taxa: horse ( Equus caballus), zebra ( Equus grevyi), and donkey ( Equus asinus). Although there was no difference in sequence among modern taxa, MALDI-MS and Edman sequencing show that residues 48 and 49 of our modern horse are Thr, Ala rather than Pro, Val as previously reported (Carstanjen B., Wattiez, R., Armory, H., Lepage, O.M., Remy, B., 2002. Isolation and characterization of equine osteocalcin. Ann. Med. Vet.146(1), 31-38). MALDI-MS and Edman sequencing data indicate that the osteocalcin sequence of the 42 ka fossil is similar to that of modern horse. Previously inaccessible structural attributes for ancient osteocalcin were observed. Glu 39 rather than Gln 39 is consistent with deamidation, a process known to occur during fossilization and aging. Two post-translational modifications were documented: Hyp 9 and a disulfide bridge. The latter suggests at least partial retention of secondary structure. As has been done for ancient DNA research, we recommend standards for preparation and criteria for authenticating results of ancient protein sequencing.

  9. Ferroelectric switch for a high-power Ka-band active pulse compressor

    Energy Technology Data Exchange (ETDEWEB)

    Hirshfield, Jay L. [Omega-P, Inc., New Haven, CT (United States)

    2013-12-18

    Results are presented for design of a high-power microwave switch for operation at 34.3 GHz, intended for use in an active RF pulse compressor. The active element in the switch is a ring of ferroelectric material, whose dielectric constant can be rapidly changed by application of a high-voltage pulse. As envisioned, two of these switches would be built into a pair of delay lines, as in SLED-II at SLAC, so as to allow 30-MW μs-length Ka-band pulses to be compressed in time by a factor-of-9 and multiplied in amplitude to generate 200 MW peak power pulses. Such high-power pulses could be used for testing and evaluation of high-gradient mm-wave accelerator structures, for example. Evaluation of the switch design was carried out with an X-band (11.43 GHz) prototype, built to incorporate all the features required for the Ka-band version.

  10. Pollen-based continental climate reconstructions at 6 and 21 ka: a global synthesis

    Energy Technology Data Exchange (ETDEWEB)

    Bartlein, P.J. [University of Oregon, Department of Geography, Eugene, Oregon (United States); Harrison, S.P. [University of Bristol, School of Geographical Sciences, Bristol (United Kingdom); Macquarie University, School of Biological Sciences, North Ryde, NSW (Australia); Brewer, S. [University of Wyoming, Botany Department, Wyoming (United States); Connor, S. [University of the Algarve, Centre for Marine and Environmental Research, Faro (Portugal); Davis, B.A.S. [Ecole Polytechnique Federale de Lausanne, School of Architecture, Civil and Environmental Engineering, Lausanne (Switzerland); Gajewski, K.; Viau, A.E. [University of Ottawa, Department of Geography, Ottawa, ON (Canada); Guiot, J. [CEREGE, Aix-en-Provence cedex 4 (France); Harrison-Prentice, T.I. [GTZ, PAKLIM, Jakarta (Indonesia); Henderson, A. [University of Minnesota, Department of Geology and Geophysics, Minneapolis, MN (United States); Peyron, O. [Laboratoire Chrono-Environnement UMR 6249 CNRS-UFC UFR Sciences et Techniques, Besancon Cedex (France); Prentice, I.C. [Macquarie University, School of Biological Sciences, North Ryde, NSW (Australia); University of Bristol, QUEST, Department of Earth Sciences, Bristol (United Kingdom); Scholze, M. [University of Bristol, QUEST, Department of Earth Sciences, Bristol (United Kingdom); Seppae, H. [University of Helsinki, Department of Geology, P.O. Box 65, Helsinki (Finland); Shuman, B. [University of Wyoming, Department of Geology and Geophysics, Laramie, WY (United States); Sugita, S. [Tallinn University, Institute of Ecology, Tallinn (Estonia); Thompson, R.S. [US Geological Survey, PO Box 25046, Denver, CO (United States); Williams, J. [University of Wisconsin, Department of Geography, Madison, WI (United States); Wu, H. [Chinese Academy of Sciences, Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Beijing (China)

    2011-08-15

    Subfossil pollen and plant macrofossil data derived from {sup 14}C-dated sediment profiles can provide quantitative information on glacial and interglacial climates. The data allow climate variables related to growing-season warmth, winter cold, and plant-available moisture to be reconstructed. Continental-scale reconstructions have been made for the mid-Holocene (MH, around 6 ka) and Last Glacial Maximum (LGM, around 21 ka), allowing comparison with palaeoclimate simulations currently being carried out as part of the fifth Assessment Report (AR5) of the Intergovernmental Panel on Climate Change. The synthesis of the available MH and LGM climate reconstructions and their uncertainties, obtained using modern-analogue, regression and model-inversion techniques, is presented for four temperature variables and two moisture variables. Reconstructions of the same variables based on surface-pollen assemblages are shown to be accurate and unbiased. Reconstructed LGM and MH climate anomaly patterns are coherent, consistent between variables, and robust with respect to the choice of technique. They support a conceptual model of the controls of Late Quaternary climate change whereby the first-order effects of orbital variations and greenhouse forcing on the seasonal cycle of temperature are predictably modified by responses of the atmospheric circulation and surface energy balance. (orig.)

  11. Preliminary checklist of Myxomycota and Ascomycota from Fruška Gora mountain

    Directory of Open Access Journals (Sweden)

    Karaman Maja A.

    2012-01-01

    Full Text Available Fruška Gora mountain represents very important source of natural and semi-natural forest ecosystems in the northern part of the Republic of Serbia and therefore it is important source of habitats for different groups of fungi. As opposed to coordinated inventory and monitoring projects of fungi established around Europe long ago, mycological researches in Serbia are still sporadic and insufficiently coordinated by authorities and experts. In accordance with that, available data concerning the state of fungi in Serbia are scarce. The aim of this work was to collect all relevant unpublished data considering fungi in Fruška Gora and to present checklist of two fungal phyla: Myxomycota and Ascomycota. In the presented checklist, 23 recorded species of Myxomycota (known as fungal analogues were distributed in 2 classes, 5 orders, and 7 families. The first class (Protosteliomycetes contained only one species - Ceratiomyxa fruticulosa (fam. Ceratiomyxaceae. The largest order was Trichiales (9 species, while the dominant families were Stemonitidaceae and Trichiaceae, each with 6 species recorded. The most abundant species was Lycogala epidendrum (fam. Reticulariaceae, with 13 records. Phylum Ascomycota was represented with 95 species belonging to 6 classes, 12 orders and 29 families. The most highly represented classes were Leotiomycetes (32 species and Pezizomycetes (31 species. The most abundant species were: Xylaria polymorpha (17 records, Xylaria hypoxylon (14 records, and Sarcoscypha coccinea (14 records. [Projekat Ministarstva nauke Republike Srbije, br. III-43002

  12. Quench propagation in the superconducting 6 kA flexible busbars of the LHC

    International Nuclear Information System (INIS)

    Herzog, R.; Calvi, M.; Sonnemann, F.; Pelegrin-Carcelen, J.M.

    2002-01-01

    Flexible superconducting cables with currents up to 6 kA will be used to power magnets individually in the insertion regions of the LHC. In case of a quench, the currents in these circuits will decay very fast (with time constants of about 200 ms) such that relatively small copper cross sections are sufficient for these busbars. Quench propagation experiments on a prototype cable and corresponding simulations led to a detailed understanding of the quench behavior of these busbars and to recommendations for the design and application of the cable. Simulations of the quench process in a multi-strand conductor led to a detailed understanding of the way current crosses from superconducting to pure copper strands and how this affects the quench propagation velocity. At nominal current (6 kA), the quench propagation velocities are high (10 m/s) and the hot spot temperature increases rapidly. In this situation, timely quench detection and energy extraction (current reduction) are vital to prevent damage of circuit components

  13. Quench Propagation in the Superconducting 6 kA Flexible Busbars of the LHC

    CERN Document Server

    Calvi, M; Pelegrin-Carcelen, J M; Sonnemann, F

    2002-01-01

    Flexible superconducting cables with currents up to 6 kA will be used to power magnets individually in the insertion regions of the LHC. In case of a quench, the currents in these circuits will decay very fast (with time constants of about 200 ms) such that relatively small copper cross sections are sufficient for these busbars. Quench propagation experiments on a prototype cable and corresponding simulations led to a detailed understanding of the quench behavior of these busbars and to recommendations for the design and application of the cable. Simulations of the quench process in a multi-strand conductor led to a detailed understanding of the way current crosses from superconducting to pure copper strands and how this affects the quench propagation velocity. At nominal current (6 kA), the quench propagation velocities are high (10 m/s) and the hot spot temperature increases rapidly. In this situation, timely quench detection and energy extraction (current reduction) are vital to prevent damage of circuit c...

  14. Quench propagation in the superconducting 6 kA flexible busbars of the LHC

    Science.gov (United States)

    Herzog, R.; Calvi, M.; Sonnemann, F.; Pelegrin-Carcelen, J. M.

    2002-05-01

    Flexible superconducting cables with currents up to 6 kA will be used to power magnets individually in the insertion regions of the LHC. In case of a quench, the currents in these circuits will decay very fast (with time constants of about 200 ms) such that relatively small copper cross sections are sufficient for these busbars. Quench propagation experiments on a prototype cable and corresponding simulations led to a detailed understanding of the quench behavior of these busbars and to recommendations for the design and application of the cable. Simulations of the quench process in a multi-strand conductor led to a detailed understanding of the way current crosses from superconducting to pure copper strands and how this affects the quench propagation velocity. At nominal current (6 kA), the quench propagation velocities are high (10 m/s) and the hot spot temperature increases rapidly. In this situation, timely quench detection and energy extraction (current reduction) are vital to prevent damage of circuit components.

  15. Regeneration of Vrnjačka Banja and sustainable tourism development

    Directory of Open Access Journals (Sweden)

    Marić Igor

    2005-01-01

    Full Text Available The development of Vrnjačka Banja has always been dynamic, starting with its reputation of an elite spa, followed by being a spa for mass medical and other tourist purposes, all up to present days when Banja became the economic center of its municipality, qualified by a number of various functions and interests. With the latest Master Plan for Vrnjačka Banja, the attempt was made to have a better control over space and to meet most of the partial interests. The aim was to "activate" wider area of Banja from central parts to the periphery, and to comprehend Banja in its wider context. Sustainable development as a tall order cannot be attained if its application does not involve a number of other instruments of public action or if it is not in sync with reaching a consensus, which would require a permanent action. In such a context, Master Plan is not an obstacle but a solid basis with significant flexibility for a creative local government.

  16. Thermal Runaway of the 13 kA Busbar Joints in the LHC

    CERN Document Server

    Verweij, A P

    2010-01-01

    Triggered by the incident in the LHC in September 2008, the thermo-electrical stability of the 10,000 soldered busbar joints in the 13 kA circuits of the LHC has been re-assessed. For this purpose the computer model QP3 has been developed. In this paper the results of some calculations are presented, and it is shown how the results have been used to improve the quench detection system and ensure safe future operation. First the layout of the 13 kA circuits, the geometry of the soldered joints and the quench detection system will be described. Special focus is put on several types of defects in the joint that have been found in the LHC. The difference between slow and fast thermal run-away will be discussed, focusing on quench propagation and reduced thermal and electrical contacts between the various parts of the joint. It is shown that an enhancement of the LHC quench detection system with a much lower threshold will greatly reduce the risk of burn-out of the joint. Finally it is discussed that protection is...

  17. Experience of 12 kA / 16 V SMPS during the HTS Current Leads Test

    Science.gov (United States)

    Panchal, P.; Christian, D.; Panchal, R.; Sonara, D.; Purwar, G.; Garg, A.; Nimavat, H.; Singh, G.; Patel, J.; Tanna, V.; Pradhan, S.

    2017-04-01

    As a part of up gradation plans in SST-1 Tokamak, one pair of 3.3 kA rated prototype hybrid current leads were developed using Di-BSCCO as High Temperature Superconductors (HTS) and the copper heat exchanger. In order to validate the manufacturing procedure prior to go for series production of such current leads, it was recommended to test these current leads using dedicated and very reliable DC switch mode power supply (SMPS). As part of test facility, 12 kA, 16 VDC programmable SMPS was successfully installed, commissioned and tested. This power supply has special features such as modularity, N+1 redundancy, very low ripple voltage, precise current measurements with Direct Current Current Transformer, CC/CV modes with auto-crossover and auto-sequence programming. As a part of acceptance of this converter, A 5.8 mΩ water-cooled resistive dummy load and PLC based SCADA system is designed, developed for commissioning of power supply. The same power supply was used for the testing of the prototype HTS current leads. The paper describes the salient features and experience of state-of-art of power supply and results obtained from this converter during the HTS current leads test.

  18. A novel Ka-band coaxial transit-time oscillator with a four-gap buncher

    Energy Technology Data Exchange (ETDEWEB)

    Song, Lili; He, Juntao; Ling, Junpu [College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073 (China)

    2015-05-15

    A novel Ka-band coaxial transit-time oscillator (TTO) with a four-gap buncher is proposed and investigated. Simulation results show that an output power of 1.27 GW and a frequency of 26.18 GHz can be achieved with a diode voltage of 447 kV and a beam current of 7.4 kA. The corresponding power efficiency is 38.5%, and the guiding magnetic field is 0.6 T. Studies and analysis indicate that a buncher with four gaps can modulate the electron beam better than the three-gap buncher in such a Ka-band TTO. Moreover, power efficiency increases with the coupling coefficient between the buncher and the extractor. Further simulation demonstrates that power efficiency can reach higher than 30% with a guiding magnetic field of above 0.5 T. Besides, the power efficiency exceeds 30% in a relatively large range of diode voltage from 375 kV to 495 kV.

  19. Electromagnetic Properties of Graphene-like Films in Ka-Band

    Directory of Open Access Journals (Sweden)

    Sofia Voronovich

    2014-05-01

    Full Text Available We studied electromagnetic properties of pyrolytic carbon (PyC films with thicknesses from 9 nm to 110 nm. The PyC films consisted of randomly oriented and intertwined graphene flakes with a typical size of a few nanometers were synthesized by chemical vapor deposition (CVD at 1100 °C on a quartz substrate. The reflectance and transmittance of these films in Ka-band, 26–37 GHz, were studied both experimentally and theoretically. The discovered remarkably high absorption loss of up to 50% of incident power, along with chemical stability, makes PyC films attractive for electromagnetic (EM interference shielding in space and airspace communication systems, as well as in portable electronic devices occupying this frequency slot. Since, in practical applications, the PyC film should be employed for coating of dielectric surfaces, two important issues to be addressed are: (i which side (front or back of the substrate should be covered to ensure maximum absorption losses; and (ii the frequency dependence of absorbance/transmittance/reflectance of binary PyC/quartz structures in the Ka-band.

  20. Effectiveness of 3 T PROPELLER DUO diffusion-weighted MRI in differentiating sinonasal lymphomas and carcinomas

    International Nuclear Information System (INIS)

    Wang, X.; Zhang, Z.; Chen, Q.; Li, J.; Xian, J.

    2014-01-01

    Aim: To evaluate the value of 3 T Periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) DUO diffusion-weighted MRI (DW-MRI) in differentiating sinonasal lymphomas from carcinomas. Materials and methods: PROPELLER DUO DW-MRI was performed in 23 patients with sinonasal lymphomas and 28 patients with carcinomas histologically confirmed at 3 T MRI. Apparent diffusion coefficients (ADCs) were obtained with two different b-values (b = 0 and 700 s/mm 2 , b = 0 and 1000 s/mm 2 ) and two different regions of interest (ROIs) sampling strategies [whole section (WS), partial section (PS)], respectively. Difference in ADCs between sinonasal lymphomas and carcinomas was evaluated using the independent samples t-test or Mann–Whitney U-test. The utility of ADC thresholds for discriminating between them was evaluated by receiver operating characteristic analysis. Results: ADCs of sinonasal lymphomas (WS ADC b0,700 , 0.838 × 10 −3  mm 2 /s) were significantly (p < 0.001) lower than those of carcinomas (WS ADC b0,700 , 1.396 × 10 −3  mm 2 /s). Using a WS ADC b0,700 value of 1.040 × 10 −3  mm 2 /s as the threshold value effectively differentiated sinonasal lymphomas from carcinomas with 100% sensitivity, 82.1% specificity, and 82.1% positive and 100% negative predictive values and 90.2% accuracy (b = 0, 700 s/mm 2 ). There was no significant difference in diagnostic ability between different b-values settings (p > 0.05) and different sampling strategies of ROIs (p > 0.05), respectively. Additionally, there was significant differences in the ADCs between diffuse large B-cell lymphomas and natural killer (NK)/T-cell lymphomas (p < 0.05). Conclusion: PROPELLER DUO DW-MRI can effectively differentiate sinonasal lymphomas from carcinomas. - Highlights: • ADCs of sinonasal lymphomas were lower than those of carcinomas. • ADCs might effectively differentiate sinonasal lymphomas from carcinomas. • Diffuse large B

  1. Estudo do sistema de gerenciamento integrado de resíduos de construção e demolição do município de São Carlos - SP

    OpenAIRE

    Rodrigo Eduardo Córdoba

    2010-01-01

    Com a intensificação da geração de resíduos sólidos urbanos, as autoridades, pesquisadores e sociedade têm voltado seus esforços para enfrentar as dificuldades de manejo e disposição final adequada desses resíduos. Neste sentido, é coerente afirmar que os resíduos de construção e demolição (RCD) fazem parte dessa problemática, pois geralmente representam a maioria dos resíduos sólidos gerados no meio urbano. A ausência de políticas públicas em relação à gestão e gerenciamento desses resíduos ...

  2. Hydroclimatic variability in loess δDwax records from the central Chinese Loess Plateau over the past 250 ka

    Science.gov (United States)

    Wang, Zheng; An, Zhisheng; Liu, Zhonghui; Qiang, Xiaoke; Zhang, Fan; Liu, Weiguo

    2018-04-01

    This study reports hydrogen isotopic records from the central Chinese Loess Plateau (CLP) over the past 250 ka. After eliminating the influence of ice and local temperatures, the δDwax records extracted from two loess sites at Xifeng and Luochuan can be taken to represent arid/humid alternations in the hydrological environment in this marginal Asian Summer Monsoon (ASM) region; they also contain integrated information on summer precipitation patterns and the corresponding responses to these changes by predominant vegetation cover types. These arid/humid alternations show 100 ka, 40 ka and 20 ka cycles. An increase in precipitation in association with an enhanced summer monsoon has historically been taken to be the major factor driving a humid environment in the central CLP. However, hydroclimatic changes in δDwax records differ for the central CLP, central China and southern China. Over a 20 ka cycle, the influence of solar insolation on hydroclimatic changes can be shown to be consistent throughout the central CLP. However, changes in the relative location of the land and sea may have caused different hydroclimatic responses between southern China and the central CLP on a glacial-interglacial scale. The hydroclimatic variability in the central CLP would suggest that an enhanced summer monsoon due to climatic warming is the key to understanding decreased drought degree in this marginal monsoonal region.

  3. On the Performance of Adaptive Data Rate over Deep Space Ka-Bank Link: Case Study Using Kepler Data

    Science.gov (United States)

    Gao, Jay L.

    2016-01-01

    Future missions envisioned for both human and robotic exploration demand increasing communication capacity through the use of Ka-band communications. The Ka-band channel, being more sensitive to weather impairments, presents a unique trade-offs between data storage, latency, data volume and reliability. While there are many possible techniques for optimizing Ka-band operations such as adaptive modulation and coding and site-diversity, this study focus exclusively on the use of adaptive data rate (ADR) to achieve significant improvement in the data volume-availability tradeoff over a wide range of link distances for near Earth and Mars exploration. Four years of Kepler Ka-band downlink symbol signal-to-noise (SNR) data reported by the Deep Space Network were utilized to characterize the Ka-band channel statistics at each site and conduct various what-if performance analysis for different link distances. We model a notional closed-loop adaptive data rate system in which an algorithm predicts the channel condition two-way light time (TWLT) into the future using symbol SNR reported in near-real time by the ground receiver and determines the best data rate to use. Fixed and adaptive margins were used to mitigate errors in channel prediction. The performance of this closed-loop adaptive data rate approach is quantified in terms of data volume and availability and compared to the actual mission configuration and a hypothetical, optimized single rate configuration assuming full a priori channel knowledge.

  4. Predicting the pKa and stability of organic acids and bases at an oil-water interface

    DEFF Research Database (Denmark)

    Andersson, Martin Peter; Olsson, Mats Henrik Mikael; Stipp, Susan Louise Svane

    2014-01-01

    We have used density functional theory and the implicit solvent model, COSMO-RS, to investigate how the acidity constant, pKa, of organic acids and bases adsorbed at the organic compound-aqueous solution interface changes, compared to its value in the aqueous phase. The pKa determine the surface...... phase and the rest remains in the hydrophilic phase. We found that the pKa for acids is shifted by ∼1 pH unit to higher values compared to the bulk water pKa, whereas they are shifted to lower values by a similar amount for bases. Because this pKa shift is similar in magnitude for each of the molecules...... is not the same as in the bulk. For example, species such as carboxylic acids are enriched at the interface, where they can dominate surface properties, even when they are a modest component in the bulk fluid. For high surface concentrations of carboxylic acid groups at an interface, such as a self...

  5. The IUPAC aqueous and non-aqueous experimental pKa data repositories of organic acids and bases.

    Science.gov (United States)

    Slater, Anthony Michael

    2014-10-01

    Accurate and well-curated experimental pKa data of organic acids and bases in both aqueous and non-aqueous media are invaluable in many areas of chemical research, including pharmaceutical, agrochemical, specialty chemical and property prediction research. In pharmaceutical research, pKa data are relevant in ligand design, protein binding, absorption, distribution, metabolism, elimination as well as solubility and dissolution rate. The pKa data compilations of the International Union of Pure and Applied Chemistry, originally in book form, have been carefully converted into computer-readable form, with value being added in the process, in the form of ionisation assignments and tautomer enumeration. These compilations offer a broad range of chemistry in both aqueous and non-aqueous media and the experimental conditions and original reference for all pKa determinations are supplied. The statistics for these compilations are presented and the utility of the computer-readable form of these compilations is examined in comparison to other pKa compilations. Finally, information is provided about how to access these databases.

  6. Accurate pKa calculation of the conjugate acids of alkanolamines, alkaloids and nucleotide bases by quantum chemical methods.

    Science.gov (United States)

    Gangarapu, Satesh; Marcelis, Antonius T M; Zuilhof, Han

    2013-04-02

    The pKa of the conjugate acids of alkanolamines, neurotransmitters, alkaloid drugs and nucleotide bases are calculated with density functional methods (B3LYP, M08-HX and M11-L) and ab initio methods (SCS-MP2, G3). Implicit solvent effects are included with a conductor-like polarizable continuum model (CPCM) and universal solvation models (SMD, SM8). G3, SCS-MP2 and M11-L methods coupled with SMD and SM8 solvation models perform well for alkanolamines with mean unsigned errors below 0.20 pKa units, in all cases. Extending this method to the pKa calculation of 35 nitrogen-containing compounds spanning 12 pKa units showed an excellent correlation between experimental and computational pKa values of these 35 amines with the computationally low-cost SM8/M11-L density functional approach. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  7. Cinética de secagem do resíduo de abacaxi enriquecido Drying kinetics of enriched pineapple residue

    Directory of Open Access Journals (Sweden)

    Hofsky V. Alexandre

    2013-06-01

    Full Text Available O Brasil é um dos maiores produtores de abacaxi do mundo e o maior da América do Sul. O fruto é a parte comercializável da planta enquanto o restante é formado por caule, folha, casca, coroa e talos, considerado resíduo agrícola e não tem sido devidamente aproveitado, resultando em perdas econômicas. Caracterizar e avaliar a cinética de secagem do resíduo (casca de abacaxi (Ananas comosus L. enriquecido utilizando a levedura Saccharomyces cerevisiae em leito estático, em camada fina de secagem, utilizando-se de planejamento experimental fatorial, foi o objetivo deste estudo. A temperatura (40 a 60 ºC e a velocidade do ar de secagem (0,8 a 1,3 m s-1 são as variáveis do processo. O resíduo enriquecido e caracterizado apresentou alto teor de matéria seca (90,27% e elevado teor de proteína (20,21% em relação ao resíduo in natura (7,61%. A cinética de secagem ocorreu no período de taxa decrescente. Os modelos Page, Henderson & Pabis e Lewis, ajustaram os dados experimentais satisfatoriamente, sendo Page discretamente superior aos demais. Verificou-se influência da variável temperatura apenas para a variável resposta umidade, não sendo observada influência estatisticamente significativa da velocidade do ar de secagem.Brazil is the largest producer of pineapple (Ananas comosus L. in South America and one of the largest in the world. The fruit is the marketable part of the plant, while the rest formed by stem, leaves, peel, crowns and shafts is considered as agricultural residue and is not properly used, resulting in economic loss. The aim of this study was to characterize and to evaluate the drying kinetics of enriched pineapple residue (peel using Saccharomyces cerevisiae yeast in static bed in fine layer, using of experimental factorial planning. The temperature (40 to 60 ºC and the wind speed (0.8 to 1.3 m s-1 were the process variables. The characterized enriched residue exhibited a high dry matter content (90.27% and a

  8. Estudo da durabilidade de argamassas alternativas contendo resíduos Durability study of alternative mortars containing wastes

    Directory of Open Access Journals (Sweden)

    J. Farias Filho

    2011-12-01

    Full Text Available O interesse pela preservação dos recursos naturais e a busca pelo desenvolvimento sustentável tem despertado interesse de um grande número de pesquisadores visando obter materiais de construção não convencionais. Dentre essas possibilidades, destacam-se os resíduos produzidos pela construção civil e pela indústria de beneficiamento de granito, em virtude do volume gerado e os impactos ambientais do seu descarte inadequado. Este trabalho tem como objetivo estudar a durabilidade das argamassas alternativas incorporadas com resíduos de construção civil e da serragem do granito. Para quantificar a durabilidade dos materiais estudados, foram realizados ensaios de envelhecimento natural e ensaios de envelhecimento acelerado através de ciclos de molhagem e secagem, visando simular condições de utilização e avaliar sua degradação. Nos estudos da durabilidade foram utilizados traços de argamassas para alvenaria de elevação, com percentagens de substituição, em peso, da cal por resíduo de 30% e 50%. Os resultados para o envelhecimento natural evidenciaram o comprometimento da durabilidade do material após 60 dias com redução no comportamento mecânico, sendo os melhores resultados para os corpos-de-prova com 30% e 50% de resíduo de construção. No envelhecimento acelerado, para os tratamentos adotados, os resultados evidenciaram a ação da formação de silicoaluminatos de cálcio e potássio que favoreceram um aumento do comportamento mecânico e, além disso, não foi observado o comprometimento da sua durabilidade.The preservation of natural resources and search for sustainable development are increase in interest by the researchers with the aim to obtain knowledge of non conventional materials. Among these possibilities stand out the recycling of residues from civil construction and from granite industry, which are producers of large amount of residues and causing great environmental impacts. The aim of this work is to

  9. A escrita de estudantes na universidade: uma análise das dimensões dos indivíduos

    Directory of Open Access Journals (Sweden)

    Elizabeth Maria da Silva

    2015-05-01

    Full Text Available http://dx.doi.org/10.5902/1984644414983Neste ensaio, objetivamos problematizar a tensão que surge entre as expectativas do professor e as interpretações do estudante quanto à escrita acadêmica, considerando três dimensões do indivíduo: papel social, identidade e suporte. Para tal, evidenciamos que a realização de atividades de produção textual acadêmica exige dos estudantes tanto a apropriação de um papel social, quanto de uma identidade acadêmica para que eles sejam reconhecidos como membros da academia. Os suportes, em especial os “suportes amigáveis”, se configuram como uma dimensão importante nesse processo de reconhecimento dos estudantes na esfera universitária.

  10. Compósitos à base de gesso com resíduos de EVA e vermiculita

    OpenAIRE

    Oliveira,Marilia P. de; Barbosa,Normando P.; Torres,Sandro M.; Leal,Antonio F.; Silva,Cibelle G.

    2012-01-01

    O gesso é um dos materiais de construção mais antigos de que se tem conhecimento. Algumas de suas propriedades lhes conferem vantagens, tais como resistência ao fogo e isolamentos térmico e acústico. Objetivou-se, com este trabalho, avaliar as propriedades físico-mecânicas de compósitos à base de gesso com a incorporação de resíduos da indústria de calçados, o etileno acetato de vinila (EVA) e a vermiculita. O desenvolvimento desses compósitos tem como propósito a produção de elementos de rev...

  11. Enriquecimento proteico do resíduo de abacaxi mediante fermentação semissólida

    Directory of Open Access Journals (Sweden)

    Gabriela Muricy de Souza Silva

    2016-12-01

    Full Text Available A fermentação em estado semissólido executa um papel importante no aproveitamento de resíduos sólidos, devido à síntese de diferentes compostos, cujo grande interesse seja voltado para segmentos industriais. Objetivou-se estudar o processo de fermentação semissólida do resíduo de abacaxi, utilizando a levedura Saccharomyces cerevisiae, com 10% de inoculo e avaliando o efeito da concentração inicial da levedura, assim como o tempo de fermentação sobre o teor proteico. O processo foi acondicionado em estufa de circulação de ar forçada a 55 °C, durante 48 horas, sendo feita pesagens nos intervalos de 0, 14, 18, 24, 38, 42 e 48 h e realizadas analises físico-químicas e granulométrica. Mediante os resultados, observou-se uma diminuição da umidade com o passar do tempo chegando a atingir 0,91% ao final do estudo, já o teor proteico, aumentou consideravelmente, com proteína bruta de 14% para 20,56%, após 48 h, o teor de sólidos solúveis totais apresentou um declínio possivelmente devido o consumo de carboidratos pela levedura. Foi realizada a análise granulométrica do resíduo, onde se observou que cerca de 80% das partículas apresentaram diâmetro maior que 2,4 milímetros. Através da fermentação semissólida dos resíduos de abacaxi foi possível elevar o teor proteico e aumentar a concentração de nutrientes, transformando um rejeito em um possível produto para destino humano ou animal com alto valor agregado.Protein enrichment of pineapple residue by semisolid fermentationAbstract: The fermentation in state semissólido executes an important paper in the use of solid residues, due to the synthesis of different compounds, which great interest is turned for industrial segments. The objective of this work studied the process of fermentation semissólida of the pineapple residues, using the yeast Saccharomyces cerevisiae, with 10 % of inoculo and value the effect of the initial concentration of the yeast, as well

  12. Quantificação de resíduos sólidos na drenagem urbana

    OpenAIRE

    Marllus Gustavo Ferreira Passos das Neves

    2006-01-01

    O objetivo deste trabalho é quantificar os resíduos sólidos que atingem a rede de drenagem de águas pluviais, isto é, plásticos, vidros, papéis e outros que podem ter destinação mais adequada do que a mais comum nos países em desenvolvimento: cursos d’água, ruas e outros locais inadequados. A quantificação do lixo foi realizada a partir da pesagem do material que atingiu o poço da casa de bombas de número 12, situada o parque Marinha do Brasil em Porto Alegre. Logo a montante desta casa de bo...

  13. Manejo de resíduos gerados na assistência domiciliar pela Estratégia de Saúde da Familia

    Directory of Open Access Journals (Sweden)

    Sergiane Bisinoto Alves

    2012-02-01

    Full Text Available O estudo objetivou analisar o manejo dos resíduos gerados pela assistência domiciliar. A coleta de dados ocorreu pela observação da assistência prestada pelos profissionais e usuários e/ou cuidadores. Os dados foram registrados em check list construído conforme recomendações da RDC 306. Os resíduos gerados foram: seringas (38,1%, agulhas (36,5%, esparadrapos (31,7%, gazes (31,7% e lancetas (28,5%. Os resíduos do grupo A não foram segregados em todas as oportunidades e os do grupo E foram segregados 100% e 10,5% pelos profissionais e usuários, respectivamente. Conclui-se que, diante das inadequações encontradas, é necessária uma ampla discussão coletiva para a proposta de políticas públicas que atendam às especificidades do manejo dos resíduos de serviços de saúde nos domicílios, com intuito de dar segurança aos trabalhadores, comunidade e ambiente.

  14. A percepção dos trabalhadores de enfermagem sobre o manejo dos resíduos químicos perigosos

    Directory of Open Access Journals (Sweden)

    Taiza Florêncio Costa

    2012-12-01

    Full Text Available Este estudo objetivou identificar a percepção dos trabalhadores de enfermagem sobre o manejo dos resíduos químicos perigosos no Hospital Universitário da Universidade de São Paulo e elaborar uma proposta para o manejo desses resíduos. Trata-se de pesquisa de abordagem qualitativa, cuja amostra foi intencional, composta por dezoito trabalhadores de enfermagem. A coleta de dados foi realizada por meio da técnica de grupo focal. Com a análise temática foram identificadas quatro categorias que evidenciaram a deficiência de treinamento nas etapas do manejo, como a primeira dificuldade expressa, tendo aparecido ainda o desconhecimento da exposição e impactos, assim como o uso dos equipamentos de proteção individual em detrimento da proteção coletiva, seguidos das sugestões quanto às medidas de competência institucional e dos trabalhadores para o manejo seguro dos resíduos químicos perigosos. Esses dados permitiram recomendar propostas para o manejo adequado dos resíduos químicos perigosos pela enfermagem.

  15. A percepção dos trabalhadores de enfermagem sobre o manejo dos resíduos químicos perigosos

    Directory of Open Access Journals (Sweden)

    Taiza Florêncio Costa

    Full Text Available Este estudo objetivou identificar a percepção dos trabalhadores de enfermagem sobre o manejo dos resíduos químicos perigosos no Hospital Universitário da Universidade de São Paulo e elaborar uma proposta para o manejo desses resíduos. Trata-se de pesquisa de abordagem qualitativa, cuja amostra foi intencional, composta por dezoito trabalhadores de enfermagem. A coleta de dados foi realizada por meio da técnica de grupo focal. Com a análise temática foram identificadas quatro categorias que evidenciaram a deficiência de treinamento nas etapas do manejo, como a primeira dificuldade expressa, tendo aparecido ainda o desconhecimento da exposição e impactos, assim como o uso dos equipamentos de proteção individual em detrimento da proteção coletiva, seguidos das sugestões quanto às medidas de competência institucional e dos trabalhadores para o manejo seguro dos resíduos químicos perigosos. Esses dados permitiram recomendar propostas para o manejo adequado dos resíduos químicos perigosos pela enfermagem.

  16. Doce cremoso de goiaba adicionado de goma guar e seu efeito hipoglicêmico em indivíduos sadios e diabéticos

    Directory of Open Access Journals (Sweden)

    LIMA Keila S.C.

    1999-01-01

    Full Text Available Estudos mostram que as fibras solúveis no organismo desempenham melhor controle glicêmico, redução do colesterol sérico, retardam o esvaziamento gástrico, podendo, também, ser metabolizadas no intestino, gerando energia. Empregou-se doce cremoso de goiaba com 1,89% de goma guar, como fonte de fibra solúvel, em indivíduos sadios e diabéticos. Os resultados do Teste Oral de Tolerância à Glicose (TOTG, em 50% dos indivíduos sadios, mostraram que a ingestão simultânea do produto com 4,34g de fibra solúvel ao TOTG promoveu uma significativa redução a nível de 5% (P > 0,05 na glicose plasmática aos 60, 90 e 120 minutos. Houve uma redução significativa (P > 0,05 na glicose plasmática nos indivíduos diabéticos, que receberam o produto com 4,34g de fibra solúvel no TOTG, aos 60 e 120 minutos. O doce cremoso de goiaba por conter 2,89% de fibra solúvel, apresentar baixo valor calórico, ser pronto para o consumo, pode servir como opção para indivíduos sadios e diabéticos.

  17. You Can Leave Your Head On: Attention Management and Turn-Taking in Multi-party Interaction with a Virtual Human/Robot Duo

    NARCIS (Netherlands)

    Linssen, Jeroen; Berkhoff, Meike; Bode, Max; Rens, Eduard; Theune, Mariet; Wiltenburg, Daan; Beskow, Jonas; Peters, Christopher; Castellano, Ginevra; O'Sullivan, Carol; Leite, Iolanda; Kopp, Stefan

    In two small studies, we investigated how a virtual human/ robot duo can complement each other in joint interaction with one or more users. The robot takes care of turn management while the virtual human draws attention to the robot. Our results show that having the virtual human address the robot,

  18. The new guidelines for paternity analysis in Germany-how many STR loci are necessary when investigating duo cases?

    Science.gov (United States)

    Poetsch, Micaela; Preusse-Prange, Andrea; Schwark, Thorsten; von Wurmb-Schwark, Nicole

    2013-07-01

    The requirements in the new German guidelines for paternity analysis have not only changed according to the so-called Gendiagnostikgesetz, the new German law regulating human genetic as well as paternity analyses, but also regarding the minimal number of short tandem repeats (STRs) which should be investigated (15 STRs) and the minimal required average exclusion chance (99.999 %). Even in paternity analyses involving only two people (e.g., father and child or mother and child), this exclusion chance is mandatory. A retrospective analysis of 330 father-child cases from our routine investigations showed in 142 cases (43 %) an individual exclusion chance below 99.999 % when using 15 STRs as required, in our routine work provided by the Powerplex® 16 kit which is reported to have an average exclusion chance of 99.988 %. Therefore, these same 330 father-child pairs were additionally analysed using the Powerplex® 21 kit and 120 of these duos were additionally analysed using the Powerplex® ESX17 kit enabling the analysis of 20 or 16 loci respectively. Now, an individual exclusion chance of more than 99.999 % could be achieved in 95.5 % (Powerplex® 21; calculation without the results of D6S1043), 98.8 % (Powerplex® 21; calculation with the results of D6S1043, using allele frequencies established in this study for a German and a West African population) and 98.3 % (Powerplex® ESX17). These data clearly demonstrate that in duo cases, more than the required 15 STR loci have to be investigated to obtain sufficient results.

  19. GERENCIAMENTO DE RESÍDUOS DE PELÍCULAS DE CHUMBO DE SERVIÇOS ODONTOLÓGICOS EM SALVADOR, BAHIA.

    Directory of Open Access Journals (Sweden)

    Leonardo Lordelo Sampaio

    2014-09-01

    Full Text Available O gerenciamento de resíduos sólidos em serviços de saúde representa um procedimento relacionado à responsabilidade sanitária e ambiental. Em Odontologia, muitos materiais, após o seu uso, por vezes, podem ser descartados e destinados no meio ambiente. Dentre eles, destaca-se o chumbo, presente, principalmente, nas películas radiográficas. O objetivo deste artigo foi apresentar os resultados da pesquisa realizada, sobre a caracterização e avaliação do gerenciamento dos resíduos de chumbo gerados pelos serviços odontológicos em Salvador, Bahia, Como procedimentos metodológicos, foram utilizados: questionário no qual se observou uma fragilidade quanto ao gerenciamento desses resíduos perigosos, relatos de dentistas e visita técnica à principal unidade de tratamento desses resíduos coletados, citados pelos dentistas. Os principais achados dizem respeito ao fluxo de destinação desses resíduos e às diferenças de caracterização entre o ciclo praticado no gerenciamento do descarte das películas de chumbo, nos serviços odontológicos, e o que é preconizado na literatura e legislação quanto à gestão de resíduos perigosos. Os resultados sugerem, em termos gerais, que uma parte do descarte desse tipo de resíduo tem uma destinação inadequada no meio ambiente. Outra parte está sendo destinada na utilização do chumbo para confecção de bijuterias e chumbada de anzóis, e em manejo duvidoso por catadores de materiais recicláveis e recolhimento por empresa especializada para o processo de incineração.

  20. Associações espaciais entre indivíduos de diferentes espécies de Miconia spp. Ruiz & Pav. (Melastomataceae

    Directory of Open Access Journals (Sweden)

    Pedro Higuchi

    2011-06-01

    Full Text Available Este estudo avaliou as associações espaciais de indivíduos pertencentes a todas as espécies arbóreas do gênero Miconia presentes no sub-bosque de um plantio experimental de espécies dos gêneros Eucalyptus e Corymbia. Como o gênero Miconia possui a maioria das espécies pioneiras, a hipótese testada foi de que os pares de espécies analisadas apresentam indivíduos com sobreposição total ou parcial de habitat. Considerando o histórico da área, é possível supor que todos os indivíduos se regeneraram a partir da chuva e do banco de sementes. Foi estabelecido um transecto cruzando a área de estudo no sentido de seu maior comprimento, a partir do qual foram determinadas as coordenadas dos indivíduos do gênero Miconia com DAS (diâmetro medido na altura do solo maior ou igual a 1 cm. As associações espaciais entre os indivíduos das diferentes espécies foram analisadas por meio da função K de Ripley bivariada. Foram amostrados indivíduos de Miconia pepericarpa DC., Miconia sellowiana Naudin, Miconia albicans Triana, Miconia argyrophylla DC., Miconia chartacea Triana e Miconia cinnamomifolia (DC. Naudin. De forma geral, os resultados demonstraram ausência de associação espacial negativa entre os pares das espécies, indicando que os indivíduos de Miconia spp. compartilham parcial ou totalmente o mesmo espaço no sub-bosque de um plantio de eucalipto. Os resultados obtidos, apesar de não poderem ser extrapolados para outras espécies, corroboram a ideia de que algumas espécies pioneiras tendem a coexistir, em florestas tropicais, em áreas onde há maior disponibilidade de luz.

  1. NALPS: a precisely dated European climate record 120–60 ka

    Directory of Open Access Journals (Sweden)

    R. Boch

    2011-11-01

    Full Text Available Accurate and precise chronologies are essential in understanding the rapid and recurrent climate variations of the Last Glacial – known as Dansgaard-Oeschger (D-O events – found in the Greenland ice cores and other climate archives. The existing chronological uncertainties during the Last Glacial, however, are still large. Radiometric age data and stable isotopic signals from speleothems are promising to improve the absolute chronology. We present a record of several precisely dated stalagmites from caves located at the northern rim of the Alps (NALPS, a region that favours comparison with the climate in Greenland. The record covers most of the interval from 120 to 60 ka at an average temporal resolution of 2 to 22 yr and 2σ-age uncertainties of ca. 200 to 500 yr. The rapid and large oxygen isotope shifts of 1 to 4.5‰ occurred within decades to centuries and strongly mimic the Greenland D-O pattern. Compared to the updated Greenland ice-core timescale (GICC05modelext the NALPS record confirms the timing of rapid warming and cooling transitions between 118 and 106 ka, but suggests younger ages for D-O events between 106 and 60 ka. As an exception, the timing of the rapid transitions into and out of the stadial following GI 22 is earlier in NALPS than in the Greenland ice-core timescale. In addition, there is a discrepancy in the duration of this stadial between the ice-core and the stalagmite chronology (ca. 2900 vs. 3650 yr. The short-lived D-O events 18 and 18.1 are not recorded in NALPS, provoking questions with regard to the nature and the regional expression of these events. NALPS resolves recurrent short-lived climate changes within the cold Greenland stadial and warm interstadial successions, i.e. abrupt warming events preceding GI 21 and 23 (precursor-type events and at the end of GI 21 and 25 (rebound-type events, as well as intermittent cooling events during GI 22 and 24. Such superimposed events have not yet been documented

  2. Calibration of the KA Band Tracking of the Bepi-Colombo Spacecraft (more Experiment)

    Science.gov (United States)

    Barriot, J.; Serafini, J.; Sichoix, L.

    2013-12-01

    The radiosciences Bepi-Colombo MORE experiment will use X/X, X/Ka and Ka/Ka band radio links to make accurate measurements of the spacecraft range and range rate. Tropospheric zenith wet delays range from 1.5 cm to 10 cm, with high variability (less than 1000 s) and will impair these accurate measurements. Conditions vary from summer (worse) to winter (better), from day (worse) to night (better). These wet delays cannot be estimated from ground weather measurements and alternative calibration methods should be used in order to cope with the MORE requirements (no more than 3 mm at 1000 s). Due to the Mercury orbit, MORE measurements will be performed by daylight and more frequently in summer than in winter (from Northern hemisphere). Two systems have been considered to calibrate this wet delay: Water Vapor Radiometers (WVRs) and GPS receivers. The Jet Propulsion Laboratory has developed a new class of WVRs reaching a 5 percent accuracy for the wet delay calibration (0.75 mm to 5 mm), but these WVRs are expensive to build and operate. GPS receivers are also routinely used for the calibration of data from NASA Deep Space probes, but several studies have shown that GPS receivers can give good calibration (through wet delay mapping functions) for long time variations, but are not accurate enough for short time variations (100 to 1000 s), and that WVRs must be used to efficiently calibrate the wet troposphere delays over such time spans. We think that such a calibration could be done by assimilating data from all the GNSS constellations (GPS, GLONASS, Galileo, Beidou and IRNSS) that will be available at the time of the Bepi-Colombo arrival at Mercury (2021), provided that the underlying physics of the turbulent atmosphere and evapotranspiration processes are properly taken into account at such time scales. This implies to do a tomographic image of the troposphere overlying each Deep Space tracking station at time scales of less than 1000 s. For this purpose, we have

  3. Žumberačka Gora – Transformation from a Refuge to an Exodus Zone

    Directory of Open Access Journals (Sweden)

    Ivan Crkvenčić

    2002-12-01

    Full Text Available This article provides an analysis of the problem of immigration from Žumberačka gora, a highland region that lies on the border between Croatia and Slovenia. Due consideration is given to its border-zone character, basic features and later colonization during the mid-sixteenth century. A dual social organization and even social relations emerged in the region, reflecting the contrast between the Military Frontier and the civilian portion. The consequences of long settlement and secondary colonization led to agrarian overpopulation and difficult living conditions. Social and overriding economic changes throughout the country by the mid-nineteenth century compelled the population of Žumberačka gora to begin departing from the region. Intense immigration gradually caused negative natural growth, i.e. a natural decline in the population. Natural decline (number of deaths exceeding the number of live births and emigration were gradually reflected in the lower numbers and advanced age of the population. These processes were particularly marked in the military frontier portion of the region – in Žumberak – which accounts for almost three fourths of this highland region’s territory. In this part of the region the population has been numerically declining since 1931, but particularly since 1971. Today only one fifth of the population recorded in 1953 (just after World War II lives in Žumberak. This drop is a result of both natural decline and immigration. The age structure of the region’s remaining population is dominated by the elderly, which is shown by demographic aging indicators. Such a population is not a sound prerequisite for the region’s economic revival. The basic features of Žumberak’s landscape are deserted or devastated villages with many abandoned tracts of once arable land. A formerly densely populated region that could not feed its own residents has become a zone marked by a population exodus, an area lacking a labor

  4. Theoretical pKa prediction of the α-phosphate moiety of uridine 5‧-diphosphate-GlcNAc

    Science.gov (United States)

    Vipperla, Bhavaniprasad; Griffiths, Thomas M.; Wang, Xingyong; Yu, Haibo

    2017-01-01

    The pKa value of the α-phosphate moiety of uridine 5‧-diphosphate-GlcNAc (UDP-GlcNAc) has been successfully calculated using density functional theory methods in conjunction with the Polarizable Continuum Models. Theoretical methods were benchmarked over a dataset comprising of alkyl phosphates. B3LYP/6-31+G(d,p) calculations using SMD solvation model provide excellent agreement with the experimental data. The predicted pKa for UDP-GlcNAc is consistent with most recent NMR studies but much higher than what it has long been thought to be. The importance of this study is evident that the predicted pKa for UDP-GlcNAc supports its potential role as a catalytic base in the substrate-assisted biocatalysis.

  5. Improvement of Ka-band satellite link availability for real-time IP-based video contribution

    Directory of Open Access Journals (Sweden)

    G. Berretta

    2017-09-01

    Full Text Available New High Throughput Satellite (HTS systems allow high throughput IP uplinks/contribution at Ka-band frequencies for relatively lower costs when compared to broadcasting satellite uplinks at Ku band. This technology offers an advantage for live video contribution from remote areas, where the terrestrial infrastructure may not be adequate. On the other hand, the Ka-band is more subject to impairments due to rain or bad weather. This paper addresses the target system specification and provides an optimized approach for the transmission of IP-based video flows through HTS commercial services operating at Ka-band frequencies. In particular, the focus of this study is on the service requirements and the propagation analysis that provide a reference architecture to improve the overall link availability. The approach proposed herein leads to the introduction of a new concept of live service contribution using pairs of small satellite antennas and cheap satellite terminals.

  6. Taani liimpuidutehas kolis Jõgevamaale / Väinu Rozental

    Index Scriptorium Estoniae

    Rozental, Väinu, 1957-

    2004-01-01

    Sylvesteri omanikud käivitavad koos Taani firma Scandi Floor APS-ga Jõgeva lähedal kaseliimpuidu tehast, mis toodab konteinerite ja treilerite põrandaid. Lisa: Lehtpuutöötlemise AS on üks suuremaid kasepuu töötlejaid. Vt. samas: Lehtpuutöötlemise värske tegevjuht tuli Thulemast

  7. Pesupulbritootja kolis Tartust Jõgevamaale / Väinu Rozental

    Index Scriptorium Estoniae

    Rozental, Väinu, 1957-

    2005-01-01

    Tabivere endisesse saetööstuskompleksi rajatud AS-i Mayeri Industries tootmishoones on tootmispinda umbes 800 ruutmeetrit ja laopinda 2000 ruutmeetrit ehk poole rohkem kui oli Tartus. Diagramm: AS Mayeri Industries plaanib käibe tõusu

  8. Sociální klima školy

    OpenAIRE

    Kodrlová, Lenka

    2012-01-01

    In the theoretic part, the dissertation is dealing with description and definition of main terms connected with climate of school and climate of class, with climate agents and their social relationships, with determinants of climate of school and with methods of climate measurement. The aim of the practical part of research is to map the climate of chosen school, to map the climate of individual classes and of the school staff and to map parent's opinions by quantitative methods (by questionn...

  9. Interakce rodiny a školy pohledem matek

    Czech Academy of Sciences Publication Activity Database

    Vojtíšková, Kateřina

    2010-01-01

    Roč. 60, č. 2 (2010), s. 115-126 ISSN 0031-3815 R&D Projects: GA MŠk 2D06014 Institutional research plan: CEZ:AV0Z70280505 Keywords : focus groups * family * secondary education Subject RIV: AO - Sociology, Demography

  10. Tõeline arhitektuur kolis linnast Juuru valda / Tiia Truu

    Index Scriptorium Estoniae

    Truu, Tiia, 1948-

    2005-01-01

    Arhitektuurivõistlusest, mille eesmärgiks oli saada parim lahendus Mahtra muuseumi laiendamiseks. Esimene preemia - märgusõna "Heinamaa", Tomomi Hayashi ja Hanno Grossschmidt arhitektuuribüroost HG Arhitektuur. Teine preemia - märgusõna "Talgud", Andres Lember ja Tarmo Maiste arhitektuuribüroost Male Arhitektid. Kolmas preemia - märgusõna "Pärand", arhitekt Liina Jaanus

  11. Marketing mateřské školy

    OpenAIRE

    Vondráková, Ivana

    2008-01-01

    This bachelor's paper is to be aimed at marketing mix usage and it is application in managing position of the principal of Kindergarten. It is theoretical part explains the main terms used in connection to marketing and marketing mix. Practical part of this paper is to describe strong and weak point of marketing mix and sufficient process to effective use of these skills. The ending summarizes all the above mentioned chapters.

  12. Filmi- ja videofestival kolis Port Arturisse / Silja Joon

    Index Scriptorium Estoniae

    Joon, Silja, 1966-

    2009-01-01

    Pärnu filmi- ja videofestival 2009 Port Artur 2 kaubanduskeskuses. Näeb videoinstallatsioonide kava ja noorteprogrammi. Korraldab Non Grata. Videoprogrammi koostab Al Paldrok, virtuaalmeedia osa Raivo Kelomees, filmiprogrammi Andres Maimik ja installatsioonide erikava Taje Tross. Festivali kava

  13. Utilização de resíduos de materiais cerâmicos na adsorção de corante azul de metileno

    Directory of Open Access Journals (Sweden)

    L. Dominguini

    2014-06-01

    Full Text Available Este trabalho estuda a viabilidade de utilização de resíduos de materiais cerâmicos como agentes de adsorção de corantes utilizados em indústrias têxteis. Resíduos de materiais cerâmicos, oriundos de quebras de tijolos, azulejos e pisos foram selecionados, triturados e moídos a uma granulometria adequada, o que possibilitou o estudo da influência do tipo de material cerâmico (resíduo e da sua granulometria sobre a adsorção do corante azul de metileno. Os resíduos cerâmicos foram separados em três diferentes granulometrias, fina (0,15 mm < Dfino< 0,30 mm, média (0,30 mm < Dmédio< 1,18 mm e grossa (1,18 mm duo de tijolo, em uma granulometria fina, foi possível adsorver aproximadamente 76% do corante azul de metileno presente na amostra ensaiada. No entanto, os resultados também mostram que a absorção de água do material cerâmico pode não ser somente o fator que influencia na adsorção do corante.

  14. Gerenciamento dos resíduos sólidos urbanos no município de pombal – PB - Brasil

    Directory of Open Access Journals (Sweden)

    Wanessa Alves Martins

    2014-10-01

    Full Text Available RESUMO - Os resíduos quando disposto de forma incorreta, sem qualquer tratamento, pode poluir o solo, alterando suas características físicas, químicas e biológicas, se tornando também em um problema de ordem estética e uma ameaça à saúde pública. A destinação inadequada dos resíduos sólidos proveniente das diversas atividades humanas é, atualmente, um dos significativos problemas enfrentado pela administração pública no Brasil e em países em desenvolvimento. Este trabalho tem por objetivo diagnosticar o atual processo de gerenciamento dos resíduos sólidos urbanos realizados no município de Pombal – PB, e propor o gerenciamento dos mesmos de maneira mais adequada diante das condições locais. O método de diagnosticar fundamentou-se num levantamento bibliográfico, entrevista ao órgão competente e a aplicação de questionários a população, em todos os bairros do município. Com o resultado deste estudo foi perceptível que a maioria da população necessita ser informada sobre as questões ambientais, para que desta forma gerencie adequadamente seus resíduos. O poder público municipal já está tomando algumas providencias para diminuir os impactos gerados pela falta de um correto gerenciamento dos seus resíduos, mas alguns pontos ainda precisam ser levados em consideração, como trabalhar principalmente a conscientização da população.Palavras chave: Destino final, Conscientização, Poder publico. 

  15. UTILIZAÇÃO DE RESÍDUOS DE MINÉRIO DE FERRO COMO MATÉRIA PRIMA PARA FABRICAÇÃO DE ARGAMASSA

    Directory of Open Access Journals (Sweden)

    Maria Auxiliadora Mendes Aguiar

    2016-04-01

    Full Text Available A quantidade cada vez maior de resíduos gerados na fase de exploração e extração de minério de ferro constitui um problema ambiental às mineradoras, devido as grandes áreas requeridas para disposição dos mesmos, bem como a constante necessidade de gerenciamento desses locais. Neste estudo foi verificada a viabilidade técnica de utilização do resíduo gerado na exploração de um minério itabirítico como matéria prima para confecção de argamassa. Foram confeccionadas diferentes formulações de argamassas através da variação da proporção cimento/resíduo e da proporção água/cimento. Para cada amostra foram determinados o tempo de pega, viscosidade e densidade, no caso da amostra fresca, e densidade e resistência à compressão para a amostra solidificada. Concluiu-se que a argamassa confeccionada com maior quantidade de resíduo (traço 1:2,5 e menor relação água/cimento (0,95 foi aquela que apresentou menor tempo de pega e maior resistência à compressão. Este resultado foi bastante satisfatório, pois o aumento de resíduo incorporado favoreceu a resistência à compressão final do produto.

  16. Tüli Euroopa raha pärast mõjutab ka eesti elu / Marianne Mikko

    Index Scriptorium Estoniae

    Mikko, Marianne, 1961-

    2005-01-01

    Ilmunud ka: Severnoje Poberezhje 5. juuli, lk. 2, Koit 5. juuli, lk. 6, Võrumaa Teataja 5. juuli, lk. 2, Vooremaa 7. juuli lk. 2, Hiiu Leht 12. juuli lk. 2, Nädaline 12. juuli lk. 4, Sõnumitooja 13. juuli lk. 2, Meie Maa 13. juuli lk. 2, Vali Uudised 15. juuli lk. 2, Virumaa Teataja 26. juuli lk. 7, Sakala 28. juuli lk. 2, Harjumaa 5. august lk. 2. Inglise peaministri Tony Blair'i ja Prantsusmaa presidendi Jacques Chirac'i vaidlustest sõltub ka Eesti põllumehe saatus, kuna Euroopa Liidu eelarvest tulevad tänavu peaaegu kõik põllumajandustoetused

  17. Crippled song. Ręka by Bolesław Leśmian within the context of expressionistic poetry

    Directory of Open Access Journals (Sweden)

    Katarzyna Szewczyk-Haake

    2009-01-01

    Full Text Available The analysis of Leśmian’s poem Ręka (from the collection of poems entitled Łąka, 1920 leads to distinguishing certain features of the poem that make a connection of the poem with literary expressionism feasible. The above similarities can be testified not only by distinct macabre motifs but also a very peculiar way the narrator constructs his narrative that can be concluded as an attempt at establishing a particular bond between the protagonist and the reader. Works written by the Poznań based expressionists Stanisław Kubicki and Józef Wittlin provide the appropriate context for the poem.

  18. The characterization of lactic acid bacteria isolated during the traditional production of Užička sausage

    Science.gov (United States)

    Borović, B.; Velebit, B.; Vesković, S.; Lakićević, B.; Baltić, T.

    2017-09-01

    Užička sausage is a traditionally fermented dry sausage that is produced in western Serbia. It is made of beef and pork with the addition of solid fat and natural spices. The whole manufacturing process lasted for 21 days. The goal of this study was to create a collection of lactic acid bacteria isolated during the ripening and identify them using molecular methods. A total of 50 isolates from different stages of ripening (fermentation and drying) were identified by molecular methods. Leuconococcus mesenteroides, Lactobacillus brevis, and Lactobacillus sakei were the predominant microorganisms in Užička sausage.

  19. Paleoclimate in continental northwestern Europe during the Eemian and early Weichselian (125-97 ka): insights from a Belgian speleothem

    Science.gov (United States)

    Vansteenberge, Stef; Verheyden, Sophie; Cheng, Hai; Edwards, R. Lawrence; Keppens, Eddy; Claeys, Philippe

    2016-07-01

    The last interglacial serves as an excellent time interval for studying climate dynamics during past warm periods. Speleothems have been successfully used for reconstructing the paleoclimate of last interglacial continental Europe. However, all previously investigated speleothems are restricted to southern Europe or the Alps, leaving large parts of northwestern Europe undocumented. To better understand regional climate changes over the past, a larger spatial coverage of European last interglacial continental records is essential, and speleothems, because of their ability to obtain excellent chronologies, can provide a major contribution. Here, we present new, high-resolution data from a stalagmite (Han-9) obtained from the Han-sur-Lesse Cave in Belgium. Han-9 formed between 125.3 and ˜ 97 ka, with interruptions of growth occurring at 117.3-112.9 and 106.6-103.6 ka. The speleothem was investigated for its growth, morphology and stable isotope (δ13C and δ18O) composition. The speleothem started growing relatively late within the last interglacial, at 125.3 ka, as other European continental archives suggest that Eemian optimum conditions were already present during that time. It appears that the initiation of Han-9 growth is caused by an increase in moisture availability, linked to wetter conditions around 125.3 ka. The δ13C and δ18O proxies indicate a period of relatively stable conditions after 125.3 ka; however, at 120 ka the speleothem δ18O registered the first signs of regionally changing climate conditions, being a modification of ocean source δ18O linked to an increase in ice volume towards the Marine Isotope Stage (MIS) 5e-5d transition. At 117.5 ka, drastic vegetation changes are recorded by Han-9 δ13C immediately followed by a cessation of speleothem growth at 117.3 ka, suggesting a transition to significantly dryer conditions. The Han-9 record covering the early Weichselian displays larger amplitudes in both isotope proxies and changes in stalagmite

  20. DINAMIČKA SVOJSTVA PJEŠAČKOG MOSTA NA GRAĐEVINSKOM FAKULTETU U OSIJEKU

    OpenAIRE

    Markotić, Mladen

    2017-01-01

    U diplomskom radu analiziran je dinamički odziv pješačkog mosta na Građevinskom fakultetu Osijek uslijed različitih opterećenja pješaka. Za ukupnu ocjenu ponašanja pješačkog mosta provedena je eksperimentalna i numerička analiza pomoću računalnog programa. Dinamičko ispitivanje provedeno je u više faza ovisno o promatranom opterećenju. U prvoj fazi analizirana su ambijentalna ispitivanja, a u ostalim fazama, promatrano je ponašanje konstrukcije pješačkog mosta uslijed hodanja i skakanja pješa...

  1. The Anomalous Currents In The Front Foils of the JET Lost Alpha Diagnostic KA-2

    International Nuclear Information System (INIS)

    Cecil, F.E.; Kiptily, V.; Salmi, A.; Horton, A.; Fullard, K.; Murari, A.; Darrow, D.; Hill, K.

    2011-01-01

    We have examined the observed currents in the front foils of the JET Faraday cup lost alpha particle diagnostic KA-2. In particular, we have sought to understand the currents during Ohmic plasmas for which the ion flux at the detectors was initially assumed to be negligible. We have considered two sources of this current: plasma ions (both deuterium and impurity) in the vicinity of the detector (including charge exchange neutrals) and photoemission from scattered UV radiation. Based upon modeling and empirical observation, the latter source appears most likely and, moreover, seems to be applicable to the currents in the front foil during ELMy H-mode plasmas. A very thin gold or nickel foil attached to the present detector aperture is proposed as a solution to this problem, and realistic calculations of expected fluxes of lost energetic neutral beam ions during TF ripple experiments are presented as justification of this proposed solution.

  2. Petrology of dune sand derived from basalt on the Ka'u Desert, Hawaii

    Science.gov (United States)

    Gooding, J. L.

    1982-01-01

    Dune sand from the Ka'u Desert, southwest flank of Kilauea volcano, Hawaii, is moderately well-sorted (median = 1.60 Phi, deviation = 0.60, skewness = 0.25, kurtosis = 0.68) and composed mostly of frosted subangular particles of basalt glass ('unfractionated' olivine-normative tholeitte), olivine, lithic fragments (subophitic and intersertal basalts; magnetite-ilmenite-rich basalts), reticular basalt glass, magnetite, ilmenite, and plagioclase, in approximately that order of abundance. Quantitative lithological comparison of the dune sand with sand-sized ash from the Keanakakoi Formation supports suggestions that the dune sand was derived largely from Keanakakoi ash. The dune sand is too well sorted to have been emplaced in its present form by base-surge but could have evolved by post-eruption reworking of the ash.

  3. The Anomalous Currents In The Front Foils of the JET Lost Alpha Diagnostic KA-2

    Energy Technology Data Exchange (ETDEWEB)

    Cecil, F. E.; Kiptily, V.; Salmi, A.; Horton, A.; Fullard, K.; Murari, A.; Darrow, D.; Hill, K.

    2011-05-04

    We have examined the observed currents in the front foils of the JET Faraday cup lost alpha particle diagnostic KA-2. In particular, we have sought to understand the currents during Ohmic plasmas for which the ion flux at the detectors was initially assumed to be negligible. We have considered two sources of this current: plasma ions both deuterium and impurity in the vicinity of the detector including charge exchange neutrals and photoemission from scattered UV radiation. Based upon modeling and empirical observation, the latter source appears most likely and, moreover, seems to be applicable to the currents in the front foil during ELMy H-mode plasmas. A very thin gold or nickel foil attached to the present detector aperture is proposed as a solution to this problem, and realistic calculations of expected fluxes of lost energetic neutral beam ions during TF ripple experiments are presented as justification of this proposed solution.

  4. Reconstruction of past climate variability in SE Spain between 14 and 8 ka

    Science.gov (United States)

    Budsky, Alexander; Scholz, Denis; Mertz-Kraus, Regina; Christoph, Spötl; Gibert, Luis; Jochum, Klaus Peter; Andreae, Meinrat O.

    2016-04-01

    In comparison to the large climatic oscillations during the Pleistocene, Holocene climate only underwent minor changes. Nevertheless, cyclic climate changes also occurred during the Holocene. The Bond events, represented by the presence of cold, ice-bearing waters from the north of Iceland as far south as the latitude of Britain, occurred at a cyclicity of about 1500 a and were particularly pronounced during the Early Holocene. However, their climatic impact on the terrestrial realm was not consistent over Europe, in particular with respect to changes in precipitation. Here we present a precisely dated high-resolution flowstone record from Cueva Victoria, SE Spain, a site well suited to study the competing influence of the Atlantic and Mediterranean Sea on the southern Iberian Peninsula. We sampled several flowstones with a thickness of up to 60 cm. 230Th/U-dating has shown that these deposits mainly formed during relatively warm climate intervals of the Middle and Late Pleistocene, i.e. interglacials and interstadials (Budsky et al., 2015; Gibert et al., 2016). Here we focus on a short (11 cm) flowstone sequence from the Holocene with a high temporal resolution (centennial for stable isotopes and annual for trace elements). The flowstone grew between 14 and ca. 8 ka b2k. The decreasing trend of the δ18O and δ13C values as well as of several trace elements between 12 and 11 ka b2k reflects an increase in temperature and precipitation at the beginning of the Holocene. In particular, Sr and Mg show a trend towards low and stable values. Subsequently, from 10.5 to 8 ka b2k, the δ13C values show a high variability (-11 to -4), whereas the δ18O values are rather stable (between -6 and -7). Maxima in δ13C are interpreted as drier conditions in response to Bond events. These events possibly led to a change of the atmospheric circulation, affecting the vegetation in SE Spain, which evolved towards an open C3 vegetation at ca. 8 ka b2k concomitant with drier conditions

  5. The evolution of deserts with climatic changes in China since 150 ka B.P.

    Institute of Scientific and Technical Information of China (English)

    董光荣; 陈惠忠; 王贵勇; 李孝泽; 邵亚军; 金炯

    1997-01-01

    According to the bioclimatic zones, dune mobility and the fabric characteristics of stratigraphic sedimentary facies, the deserts in China are divided into Eastern, Western, Central and Northwestern deserts. Based on the records of stratigraphical facies, climatic proxies, historical data, etc. in each desert region, the evolution of deserts with climatic changes in time and space since 150 ka B. P. in China are dealt with; then the evolution of deserts in relation to the glacial climatic fluctuations caused by solar radiation changes, underlying surface variation and their feedback mechanism is discussed through comparison with global records; finally, in consideration of global wanning due to increasing of greenhouse gases such as CO2, the possible tendency of the evolution of deserts and the climatic changes is discussed.

  6. Operating experience with the 50 MeV 10kA ATA power conditioning system

    International Nuclear Information System (INIS)

    Rogers, D.; Lee, F.D.; Newton, M.; Reginato, L.L.; Smith, M.E.

    1984-06-01

    The Advanced Test Accelerator (ATA) has been operational for over one year and has achieved full parameters in the power conditioning system. The pulsed power system has been previously described, however, during the past year of operation a considerable amount of statistical data has been accumulated on the 211 gas blown spark gaps that perform the main switching function in the ATA. These spark gaps were designed for 250kV, 40 kA and 70ns pulse. The parameter that made this spark gap somewhat unique was the requirement that it be able to provide a burst of ten pulses at one kilohertz with an average repetition rate of 5Hz. 2 references, 7 figures

  7. Groundwater pollution with heavy metals in the Ibar alluvium near Raška (Serbia

    Directory of Open Access Journals (Sweden)

    Miladinović Branko

    2012-01-01

    Full Text Available As a result of the operation of an ore flotation facility at Donja Rudnica near Raška, Serbia, during the period from 1972 to 2002, flotation tailings and wastewater of highly complex chemical compositions were deposited in the alluvial plain of the Ibar River. Due to the excellent groundwater flow characteristics of the alluvial formations underlying the tailings dump, the groundwater and soil over an extended area were continually polluted. High concentrations of heavy metals (Fe = 7.38 mg/L. Zn = 4.04 mg/L, Pb = 2.17 mg/L in the soil and concentrations of sulfate as high as 3709 mg/L, and pH levels of 4.2 in the groundwater have been recorded at some locations. This paper draws attention to the potential risk this site poses for the conservation of biodiversity over the extended area.

  8. Thermal Deformation and RF Performance Analyses for the SWOT Large Deployable Ka-Band Reflectarray

    Science.gov (United States)

    Fang, H.; Sunada, E.; Chaubell, J.; Esteban-Fernandez, D.; Thomson, M.; Nicaise, F.

    2010-01-01

    A large deployable antenna technology for the NASA Surface Water and Ocean Topography (SWOT) Mission is currently being developed by JPL in response to NRC Earth Science Tier 2 Decadal Survey recommendations. This technology is required to enable the SWOT mission due to the fact that no currently available antenna is capable of meeting SWOT's demanding Ka-Band remote sensing requirements. One of the key aspects of this antenna development is to minimize the effect of the on-orbit thermal distortion to the antenna RF performance. An analysis process which includes: 1) the on-orbit thermal analysis to obtain the temperature distribution; 2) structural deformation analysis to get the geometry of the antenna surface; and 3) the RF performance with the given deformed antenna surface has been developed to accommodate the development of this antenna technology. The detailed analysis process and some analysis results will be presented and discussed by this paper.

  9. An experimental mechanical switch for 3 kA driven by superconducting coils

    International Nuclear Information System (INIS)

    Herman, H.J.; Ten Haken, B.; Van de Klundert, L.J.M.

    1986-01-01

    Usually mechanical switches that are built for use in superconducting circuits are driven in some way by a rod which is controlled at room temperature. In this paper, an alternative method to drive the electrodes of the switch is reported. In fact the new device is a superconducting relay that uses an antiseries connection of two superconducting air-core coils. The repulsing force of these relay coils enables the switch to be closed by applying a pressure to the electrodes. The off-state is effected by a set of springs which interrupt the electrodes when the coil current is switched off. We realized that this electro-magnetic method of producing large forces could be promising for driving a mechanical switch. The desired method was demonstrated by an experimental model. A switch-on resistance of 8*10 -8 Ω with a switch current of 3 kA and a contact force of 20 kN was measured

  10. Radiating Elements for Shared Aperture Tx/Rx Phased Arrays at K/Ka Band

    KAUST Repository

    Sandhu, Ali Imran; Arnieri, E.; Amendola, Giandomenico; Boccia, L.; Meniconi, Erika; Ziegler, Volker

    2016-01-01

    A dual band, Tx/Rx, self-diplexing phased array is presented. The antenna has been designed to cover Tx/Rx satellite communications at K/Ka band with a frequency ratio 1.5:1. To obtain dual band operations with a single radiating surface, a novel dual band radiator is adopted and placed in a configuration in which dual band and single band elements are interleaved. The proposed configuration reduces the number of radiating elements required by other solutions while avoiding the insurgence of grating lobes. The tightly packed arrangement of the elements poses many integration issues, which are solved with a novel integration technique. The array elements are optimized to scan the beam in excess of ° in both bands. A subarray with 49 Rx elements and 105 Tx elements was built and measured confirming the results obtained in simulations.

  11. A wave-bending structure at Ka-band using 3D-printed metamaterial

    Science.gov (United States)

    Wu, Junqiang; Liang, Min; Xin, Hao

    2018-03-01

    Three-dimensional printing technologies enable metamaterials of complex structures with arbitrary inhomogeneity. In this work, a 90° wave-bending structure at the Ka-band (26.5-40 GHz) based on 3D-printed metamaterials is designed, fabricated, and measured. The wave-bending effect is realized through a spatial distribution of varied effective dielectric constants. Based on the effective medium theory, different effective dielectric constants are accomplished by special, 3D-printable unit cells, which allow different ratios of dielectric to air at the unit cell level. In contrast to traditional, metallic-structure-included metamaterial designs, the reported wave-bending structure here is all dielectric and implemented by the polymer-jetting technique, which features rapid, low-cost, and convenient prototyping. Both simulation and experiment results demonstrate the effectiveness of the wave-bending structure.

  12. Analysis of Defective Interconnections of the 13 kA LHC Superconducting Bus Bars

    CERN Document Server

    Granieri, P P; Bianchi, M; Breschi, M; Bottura, L; Willering, G

    2012-01-01

    The interconnections between Large Hadron Collider (LHC) main dipole and quadrupole magnets are made of soldered joints of two superconducting cables stabilized by a copper bus bar. The 2008 incident revealed the possible presence of defects in the interconnections of the 13 kA circuits that could lead to unprotected resistive transitions. Since then thorough experimental and numerical investigations were undertaken to determine the safe operating conditions for the LHC. This paper reports the analysis of experimental tests reproducing defective interconnections between main quadrupole magnets. A thermo-electromagnetic model was developed taking into account the complicated sample geometry. Close attention was paid to the physical description of the heat transfer towards helium, one of the main unknown parameters. The simulation results are reported in comparison with the measurements in case of static He I cooling bath. The outcome of this study constitutes a useful input to improve the stability assessment ...

  13. Ka-band IQ vector modulator employing GaAs HBTs

    International Nuclear Information System (INIS)

    Cao Yuxiong; Wu Danyu; Chen Gaopeng; Jin Zhi; Liu Xinyu

    2011-01-01

    The importance of high-performance, low-cost and millimeter-wave transmitters for digital communications and radar applications is increasing. The design and performance of a Ka-band balanced in-phase and quadrature-phase (I-Q) type vector modulator, using GaAs heterojunction bipolar transistors (HBTs) as switching elements, are presented. The balanced technique is used to remove the parasitics of the HBTs to result in near perfect constellations. Measurements of the monolithic microwave integrated circuit (MMIC) chip with a size of 1.89 x 2.26 mm 2 demonstrate an amplitude error below 1.5 dB and the phase error within 3 0 between 26 and 40 GHz except for a singular point at 35.6 GHz. The results show that the technique is suitable for millimeter-wave digital communications. (semiconductor integrated circuits)

  14. Design of a 30 m long 1 kA 10 kV YBCO cable

    Energy Technology Data Exchange (ETDEWEB)

    Rostila, L [Institute of Electromagnetics, Tampere University of Technology, PO Box 692, FIN-33101 Tampere (Finland); Lehtonen, J [Institute of Electromagnetics, Tampere University of Technology, PO Box 692, FIN-33101 Tampere (Finland); Masti, M [Institute of Electromagnetics, Tampere University of Technology, PO Box 692, FIN-33101 Tampere (Finland); Lallouet, N [Nexas France, rue Mozart 4-10, 92587 Clichy (France); Saugrain, J-M [Nexas France, rue Mozart 4-10, 92587 Clichy (France); Allais, A [Nexans Deutschland Industries GmbH and Co. KG, Kabelkamp 20, D-30179 Hannover (Germany); Schippl, K [Nexans Deutschland Industries GmbH and Co. KG, Kabelkamp 20, D-30179 Hannover (Germany); Schmidt, F [Nexans Deutschland Industries GmbH and Co. KG, Kabelkamp 20, D-30179 Hannover (Germany); Balog, G [Nexans Norway, PO Box 6450, Etterstad, N-0605, Oslo, Norway (Norway); Marot, G [Air Liquide DTA, 2 rue de Clemenciere BP15, 38360 Sassenage (France); Ravex, A [Air Liquide DTA, 2 rue de Clemenciere BP15, 38360 Sassenage (France); Usoskin, A [European High Temperature Superconductors Gmbh and Co. KG, Windausweg 2, 37037 Goettingen (Germany); Goemoery, F [Institute of Electrical Engineering, Slovak Academy of Sciences, Dubravska cesta 9, 84104 Bratislava (Slovakia); Klincok, B [Institute of Electrical Engineering, Slovak Academy of Sciences, Dubravska cesta 9, 84104 Bratislava (Slovakia); Souc, J [Institute of Electrical Engineering, Slovak Academy of Sciences, Dubravska cesta 9, 84104 Bratislava (Slovakia); Freyhardt, H C [Institute of Materialphysic, University of Goettingen, Friedrich-Hund-Platz 1, D-37077 Goettingen (Germany)

    2006-04-15

    In this paper a 30 m long one-phase coaxial YBCO cable with 1 kA transport current and 10 kV operating voltage was designed for the Super3C project to check the feasibility of YBCO tapes for low-loss cables. The final design incorporates cryogenic, mechanical and electromagnetic aspects. The electromagnetic losses during normal operation must be minimized. The cryogenic design must also take into account the generation of heat during short circuit conditions. Mechanical restrictions set the minimum gaps between the coated conductor tapes and the minimum lay angles in order to make the cabling feasible and to enable handling of the cable. The design of the electric insulation should be according to the international standard as far as applicable. The final design has to take into account all of the above restrictions.

  15. Long-term monitoring of Sgr A* at 7 mm with VERA and KaVA

    Science.gov (United States)

    Akiyama, K.; Kino, M.; Sohn, B.; Lee, S.; Trippe, S.; Honma, M.

    2014-05-01

    We present the results of radio monitoring observations of Sgr A* at 7 mm (i.e. 43 GHz) with the VLBI Exploration of Radio Astrometry (VERA), which is a VLBI array in Japan. VERA provides angular resolution on millisecond scales, resolving structures within 100 Schwarzschild radii of Sgr A* , similar to the Very Large Baseline Array (VLBA). We performed multi-epoch observations of Sgr A* in 2005 - 2008, and started monitoring it again with VERA from 2013 January to trace the current G2 encounter event. Our preliminary results in 2013 show that Sgr A* on mas scales has been in an ordinary state as of August 2013, although some fraction of the G2 cloud already passed the pericenter of Sgr A* in April 2013. We will continue monitoring Sgr A* with VERA and the newly developed KaVA (KVN and VERA Array).

  16. Design of a 30 m long 1 kA 10 kV YBCO cable

    International Nuclear Information System (INIS)

    Rostila, L; Lehtonen, J; Masti, M; Lallouet, N; Saugrain, J-M; Allais, A; Schippl, K; Schmidt, F; Balog, G; Marot, G; Ravex, A; Usoskin, A; Goemoery, F; Klincok, B; Souc, J; Freyhardt, H C

    2006-01-01

    In this paper a 30 m long one-phase coaxial YBCO cable with 1 kA transport current and 10 kV operating voltage was designed for the Super3C project to check the feasibility of YBCO tapes for low-loss cables. The final design incorporates cryogenic, mechanical and electromagnetic aspects. The electromagnetic losses during normal operation must be minimized. The cryogenic design must also take into account the generation of heat during short circuit conditions. Mechanical restrictions set the minimum gaps between the coated conductor tapes and the minimum lay angles in order to make the cabling feasible and to enable handling of the cable. The design of the electric insulation should be according to the international standard as far as applicable. The final design has to take into account all of the above restrictions

  17. Advanced test accelerator (ATA), a 50 MeV, 10 kA induction linac

    International Nuclear Information System (INIS)

    Reginato, L.

    1983-01-01

    The ATA is an induction accelerator designed to produce 70 ns pulses of electrons at currents of 10 kA and energies in excess of 50 MeV. The accelerator is capable of operating at an average rate of 5 Hz or at 1 kHz for ten pulses. The parameters were chosen primarily to provide the experimental basis for advancing the understanding of electron beam propagation physics. The 85 m accelerator has been under construction for the past four years and has adopted mainly an improved version of the ETA technology to satisfy the required parameters. Initial operation of the facility and the energy conversion system from primary power to axial electric field will be described; recent advances in magnetic switching which have been incorporated in the innector will also be discussed

  18. SAD phasing with in-house cu Ka radiation using barium as anomalous scatterer.

    Science.gov (United States)

    Dhanasekaran, V; Velmurugan, D

    2011-12-01

    Phasing of lysozyme crystals using co-crystallized barium ions was performed using single-wavelength anomalous diffraction (SAD) method using Cu Ka radiation with in-house source of data collection. As the ion binding sites vary with respect to the pH of the buffer during crystallization, the highly isomorphic forms of lysozyme crystals grown at acidic and alkaline pH were used for the study. Intrinsic sulphur anomalous signal was also utilized with anomalous signal from lower occupancy ions for phasing. The study showed that to solve the structure by SAD technique, 2.8-fold data redundancy was sufficient when barium was used as an anomalous marker in the in-house copper X-ray radiation source for data collection. Therefore, co-crystallization of proteins with barium containing salt can be a powerful tool for structure determination using lab source.

  19. Mikroprocesorem řízená nabíječka baterií

    OpenAIRE

    Džama, Igor

    2016-01-01

    Tato diplomová práce se zabývá návrhem mikroprocesorem řízené nabíječky baterií. Práce obsahuje obvodové schéma zapojení výsledné nabíječky. V této práci je vytvořen funkční software pro řízení této nabíječky. Nabíječka je pak vyrobena. This diploma thesis deals with design of microprocessor controlled battery charger. Thesis contains circuit diagram of final charger. In this thesist there is created functioning software for control of this battery charger. Charger is than manufactured. ...

  20. Radiating Elements for Shared Aperture Tx/Rx Phased Arrays at K/Ka Band

    KAUST Repository

    Sandhu, Ali Imran

    2016-04-11

    A dual band, Tx/Rx, self-diplexing phased array is presented. The antenna has been designed to cover Tx/Rx satellite communications at K/Ka band with a frequency ratio 1.5:1. To obtain dual band operations with a single radiating surface, a novel dual band radiator is adopted and placed in a configuration in which dual band and single band elements are interleaved. The proposed configuration reduces the number of radiating elements required by other solutions while avoiding the insurgence of grating lobes. The tightly packed arrangement of the elements poses many integration issues, which are solved with a novel integration technique. The array elements are optimized to scan the beam in excess of ° in both bands. A subarray with 49 Rx elements and 105 Tx elements was built and measured confirming the results obtained in simulations.

  1. Pārskatu ģenerēšanas bibliotēka Python valodai

    OpenAIRE

    Paltovs, Deniss

    2012-01-01

    Kvalifikācijas darba pamatā ir pārskatu ģenerēšanas bibliotēka Python valodai - PythonReports, kura ļauj Python izstrādātajiem no datiem un šablona izveidot izdruku uz ekrāna vai printera. Gala produkts ir vizuālais redaktors, kurš ļauj ērti un uzskatāmi veidot un rediģēt PythonReports šablonus, izmantojot mūsdienu lietotāju saskarnes tehnoloģijas operētājsistēmās ar grafisku lietotāja saskarni. Kvalifikācijas darbs balstās uz iepriekšējo pieredzi, iegūto izmantojot līdzīgus rīkus citās sist...

  2. PROPOSAL HOW TO RECONSTRUCT THE ROŠKA MULTI-STOREY

    Directory of Open Access Journals (Sweden)

    Blaž Vogelnik

    2013-01-01

    Full Text Available We have known for years that the residential towers on Roška Street are absolutely the most problematic buildings in Ljubljana in terms of their seismic safety. We decided to propose the rehabilitation of these structures in line with a "new philosophy" according to which the building interiors are left unaffected, and all the necessary reinforcements are implemented externally. During rehabilitation works, the building is not deprived of its habitational function. We developed the "nothing within – all without" philosophy back in 1981 for the rehabilitation of a big hotel near Makarska (we also took out a patent for it then. It is also essential to note that, apart from adequate seismic reinforcement, we gain new residential floor areas which generally cover all rehabilitation costs. In the case of the residential towers on Roška Street, we envisaged additional reinforced concrete walls for the entire perimeter of the towers. These walls are "stabilised" with a 3 m wide console slab running all around each floor, thus adding approximately 65 sqm of additional floor area to every apartment, which amounts to a little more than the net apartment floor area. Before setting up the new additional perimeter walls, we place 15 cm of insulation in between which considerably reduces the use of heating energy and eliminates all "thermal bridges". The old perimeter walls are connected to the new ones by Ø 22 mm inox steel treenails (with weak thermal conductivity. Since the existing structures are no longer settling, all of the new perimeter walls will be founded on Jet-Grouted columns.

  3. Towards a 20 kA high temperature superconductor current lead module using REBCO tapes

    Science.gov (United States)

    Heller, R.; Bagrets, N.; Fietz, W. H.; Gröner, F.; Kienzler, A.; Lange, C.; Wolf, M. J.

    2018-01-01

    Most of the large fusion devices presently under construction or in operation consisting of superconducting magnets like EAST, Wendelstein 7-X (W7-X), JT-60SA, and ITER, use high temperature superconductor (HTS) current leads (CL) to reduce the cryogenic load and operational cost. In all cases, the 1st generation HTS material Bi-2223 is used which is embedded in a low-conductivity matrix of AgAu. In the meantime, industry worldwide concentrates on the production of the 2nd generation HTS REBCO material because of the better field performance in particular at higher temperature. As the new material can only be produced in a multilayer thin-film structure rather than as a multi-filamentary tape, the technology developed for Bi-2223-based current leads cannot be transferred directly to REBCO. Therefore, several laboratories are presently investigating the design of high current HTS current leads made of REBCO. Karlsruhe Institute of Technology is developing a 20 kA HTS current lead using brass-stabilized REBCO tapes—as a further development to the Bi-2223 design used in the JT-60SA current leads. The same copper heat exchanger module as in the 20 kA JT-60SA current lead will be used for simplicity, which will allow a comparison of the newly developed REBCO CL with the earlier produced and investigated CL for JT-60SA. The present paper discusses the design and accompanying test of single tape and stack REBCO mock-ups. Finally, the fabrication of the HTS module using REBCO stacks is described.

  4. Simultaneous Ka-Band Site Characterization: Goldstone, CA, White Sands, NM, and Guam, USA

    Science.gov (United States)

    Acosta, Roberto; Morse, Jacquelynne; Zemba, Michael; Nessel, James; Morabito, David; Caroglanian, Armen

    2011-01-01

    To statistically characterize atmospheric effects on Ka-band links at NASA operational sites, NASA has constructed site test interferometers (STI s) which directly measure the tropospheric phase stability and rain attenuation. These instruments observe an unmodulated beacon signal broadcast from a geostationary satellite (e.g., Anik F2) and measure the phase difference between the signals received by the two antennas and its signal attenuation. Three STI s have been deployed so far: the first one at the NASA Deep Space Network Tracking Complex in Goldstone, California (May 2007); the second at the NASA White Sands Complex, in Las Cruses, New Mexico (February 2009); and the third at the NASA Tracking and Data Relay Satellite (TDRS) Remote Ground Terminal (GRGT) complex in Guam (May 2010). Two station-years of simultaneous atmospheric phase fluctuation data have been collected at Goldstone and White Sands, while one year of data has been collected in Guam. With identical instruments operating simultaneously, we can directly compare the phase stability and rain attenuation at the three sites. Phase stability is analyzed statistically in terms of the root-mean-square (rms) of the tropospheric induced time delay fluctuations over 10 minute blocks. For two years, the time delay fluctuations at the DSN site in Goldstone, CA, have been better than 2.5 picoseconds (ps) for 90% of the time (with reference to zenith), meanwhile at the White Sands, New Mexico site, the time delay fluctuations have been better than 2.2 ps with reference to zenith) for 90% of time. For Guam, the time delay fluctuations have been better than 12 ps (reference to zenith) at 90% of the time, the higher fluctuations are as expected from a high humidity tropical rain zone. This type of data analysis, as well as many other site quality characteristics (e.g., rain attenuation, infrastructure, etc.) will be used to determine the suitability of all the sites for NASA s future communication services at Ka-band.

  5. Global Ocean Data Quality Assessment of SARAL/AltiKa GDR products

    Science.gov (United States)

    Picot, Nicolas; Prandi, Pierre; desjonqueres, jean-damien

    2015-04-01

    The SARAL mission was successfully launched on February, 5th 2013 and cycle 1 started a few days later on March 14th. For more than 2 years, the Ka-band altimeter and dual frequency radiometer on board have been collecting high quality ocean topography measurements. Within the first months of the mission, a first patch (P1) was developed to correct some small anomalies detected in the products and to account for in-flight calibration data. At the beginning of year 2014, a second patch (P2) was produced (applied from cycle 10 pass 407 on OGDR data and from pass 566 on IGDR data) and the all GDR produced before this were reprocessed in order to deliver a consistent dataset to users. This new version of the products provides, among other changes, important improvements regarding radiometer data processing, sea-state bias and wind speed. Since the beginning of the mission, data quality assessment of OGDR, IGDR and GDR data has been routinely performed at CNES and CLS (as part of the CNES SALP project). We will present the main results of the data quality assessment over ocean based on SARAL/AltiKa GDR data reprocessed using the homogeneous P2 version. The main data quality metrics presented will include: Data availability and validity, Monitoring of the main altimeter and radiometer parameters and comparisons to other altimeter missions such as OSTM/Jason-2, Mission performance through mono-mission crossovers analysis, Investigation of inter-mission biases and large-scale regional differences from multi-mission crossovers between SARAL and Jason-2. Monitoring of the global mean SLA and comparison to Jason-2 Finally, we will present the new product version standard that is currently under development on CNES side.

  6. Reverberation Mapping of the Kepler-Field AGN KA1858+4850

    Science.gov (United States)

    Pei, Liuyi; Barth, Aaron J.; Aldering, Greg S.; Briley, Michael M.; Carroll, Carla J.; Carson, Daniel J.; Cenko, S., Bradley; Clubb, Kelsey I.; Cohen, Daniel P.; Cucchiara, Antonino; hide

    2014-01-01

    KA1858+4850 is a narrow-line Seyfert 1 galaxy at redshift 0.078 and is among the brightest active galaxies monitored by the Kepler mission. We have carried out a reverberation mapping campaign designed to measure the broad-line region size and estimate the mass of the black hole in this galaxy. We obtained 74 epochs of spectroscopic data using the Kast Spectrograph at the Lick 3-m telescope from February to November of 2012, and obtained complementary V-band images from five other ground-based telescopes. We measured the Hbeta light curve lag with respect to the V-band continuum light curve using both cross-correlation techniques (CCF) and continuum light curve variability modeling with the JAVELIN method, and found rest-frame lags of tCCF = 13.53+2.03 -2.32 days and tJAVELIN = 13.15+1.08 -1.00 days. The Hbeta root-mean-square line profile has a width of sigma line = 770 +/- 49 km s(exp -1). Combining these two results and assuming a virial scale factor of f = 5.13, we obtained a virial estimate of M(sub BH) = 8.06+1.59 -1.72 ×10(exp 6) solar mass for the mass of the central black hole and an Eddington ratio of L/L(sub Edd) (is) approx. 0.2. We also obtained consistent but slightly shorter emission-line lags with respect to the Kepler light curve. Thanks to the Kepler mission, the light curve of KA1858+4850 has among the highest cadences and signal-to-noise ratios ever measured for an active galactic nucleus; thus, our black hole mass measurement will serve as a reference point for relations between black hole mass and continuum variability characteristics in active galactic nuclei.

  7. Reverberation Mapping of the KEPLER Field AGN KA1858+4850

    Science.gov (United States)

    Pei, Liuyi; Barth, Aaron J.; Aldering, Greg S.; Briley, Michael M.; Carroll, Carla J.; Carson, Daniel J.; Cenko, S. Bradley; Clubb, Kelsey I.; Cohen, Daniel P.; Cucchiara, Antonino; Desjardins, Tyler D.; Edelson, Rick; Fang, Jerome J.; Fedrow, Joseph M.; Filippenko, Alexei V.; Fox, Ori D.; Furniss, Amy; Gates, Elinor L.; Gregg, Michael; Gustafson, Scott; Horst, J. Chuck; Joner, Michael D.; Kelly, Patrick L.; Lacy, Mark; Laney, C. David; Leonard, Douglas C.; Li, Weidong; Malkan, Matthew A.; Margon, Bruce; Neeleman, Marcel; Nguyen, My L.; Prochaska, J. Xavier; Ross, Nathaniel R.; Sand, David J.; Searcy, Kinchen J.; Shivvers, Isaac S.; Silverman, Jeffrey M.; Smith, Graeme H.; Suzuki, Nao; Smith, Krista Lynne; Tytler, David; Werk, Jessica K.; Worseck, Gábor

    2014-11-01

    KA1858+4850 is a narrow-line Seyfert 1 galaxy at redshift 0.078 and is among the brightest active galaxies monitored by the Kepler mission. We have carried out a reverberation mapping campaign designed to measure the broad-line region size and estimate the mass of the black hole in this galaxy. We obtained 74 epochs of spectroscopic data using the Kast Spectrograph at the Lick 3 m telescope from 2012 February to November, and obtained complementary V-band images from five other ground-based telescopes. We measured the Hβ light curve lag with respect to the V-band continuum light curve using both cross-correlation techniques (CCF) and continuum light curve variability modeling with the JAVELIN method and found rest-frame lags of τ CCF = 13.53+2.03-2.32 days and τ JAVELIN = 13.15+1.08-1.00 days. The Hβ rms line profile has a width of σline = 770 ± 49 km s-1. Combining these two results and assuming a virial scale factor of f = 5.13, we obtained a virial estimate of M{BH} = 8.06+1.59-1.72 × 106 {M}⊙ for the mass of the central black hole and an Eddington ratio of L/L Edd ≈ 0.2. We also obtained consistent but slightly shorter emission-line lags with respect to the Kepler light curve. Thanks to the Kepler mission, the light curve of KA1858+4850 has among the highest cadences and signal-to-noise ratios ever measured for an active galactic nucleus; thus, our black hole mass measurement will serve as a reference point for relations between black hole mass and continuum variability characteristics in active galactic nuclei.

  8. Reverberation mapping of the Kepler field AGN KA1858+4850

    Energy Technology Data Exchange (ETDEWEB)

    Pei, Liuyi; Barth, Aaron J.; Carson, Daniel J. [Department of Physics and Astronomy, University of California, Irvine, CA, 92697 (United States); Aldering, Greg S.; Cucchiara, Antonino [Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States); Briley, Michael M. [Department of Physics and Astronomy, Appalachian State University, Boone, NC 28608 (United States); Carroll, Carla J. [Department of Physics and Astronomy, N283 ESC, Brigham Young University, Provo, UT 84602 (United States); Cenko, S. Bradley; Edelson, Rick [Department of Astronomy, University of Maryland, College Park, MD 20742 (United States); Clubb, Kelsey I.; Cohen, Daniel P.; Filippenko, Alexei V.; Fox, Ori D. [Department of Astronomy, University of California, Berkeley, CA 94720-3411 (United States); Desjardins, Tyler D. [Department of Physics and Astronomy, The University of Western Ontario, London, ON N6A 3K7 (Canada); Fang, Jerome J. [Department of Astronomy and Astrophysics, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064 (United States); Fedrow, Joseph M. [Department of Astronomy, San Diego State University, San Diego, CA 92182 (United States); Furniss, Amy [Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305 (United States); Gates, Elinor L. [Lick Observatory, P.O. Box 85, Mt. Hamilton, CA 95140 (United States); Gregg, Michael [Department of Physics, University of California, Davis, One Shields Avenue, Davis, CA 95616 (United States); Gustafson, Scott [Department of Physics, University of California, San Diego, La Jolla, CA 92093 (United States); and others

    2014-11-01

    KA1858+4850 is a narrow-line Seyfert 1 galaxy at redshift 0.078 and is among the brightest active galaxies monitored by the Kepler mission. We have carried out a reverberation mapping campaign designed to measure the broad-line region size and estimate the mass of the black hole in this galaxy. We obtained 74 epochs of spectroscopic data using the Kast Spectrograph at the Lick 3 m telescope from 2012 February to November, and obtained complementary V-band images from five other ground-based telescopes. We measured the Hβ light curve lag with respect to the V-band continuum light curve using both cross-correlation techniques (CCF) and continuum light curve variability modeling with the JAVELIN method and found rest-frame lags of τ{sub CCF}=13.53{sub −2.32}{sup +2.03} days and τ {sub JAVELIN} =13.15{sub −1.00}{sup +1.08} days. The Hβ rms line profile has a width of σ{sub line} = 770 ± 49 km s{sup –1}. Combining these two results and assuming a virial scale factor of f = 5.13, we obtained a virial estimate of M{sub BH}=8.06{sub −1.72}{sup +1.59}×10{sup 6}M{sub ⊙} for the mass of the central black hole and an Eddington ratio of L/L {sub Edd} ≈ 0.2. We also obtained consistent but slightly shorter emission-line lags with respect to the Kepler light curve. Thanks to the Kepler mission, the light curve of KA1858+4850 has among the highest cadences and signal-to-noise ratios ever measured for an active galactic nucleus; thus, our black hole mass measurement will serve as a reference point for relations between black hole mass and continuum variability characteristics in active galactic nuclei.

  9. Silica in a Mars analog environment: Ka u Desert, Kilauea Volcano, Hawaii

    Science.gov (United States)

    Seelos, K.D.; Arvidson, R. E.; Jolliff, B.L.; Chemtob, S.M.; Morris, R.V.; Ming, D. W.; Swayze, G.A.

    2010-01-01

    Airborne Visible/Near-Infrared Imaging Spectrometer (AVIRIS) data acquired over the Ka u Desert are atmospherically corrected to ground reflectance and used to identify the mineralogic components of relatively young basaltic materials, including 250-700 and 200-400 year old lava flows, 1971 and 1974 flows, ash deposits, and solfatara incrustations. To provide context, a geologic surface units map is constructed, verified with field observations, and supported by laboratory analyses. AVIRIS spectral endmembers are identified in the visible (0.4 to 1.2 ??m) and short wave infrared (2.0 to 2.5 ??m) wavelength ranges. Nearly all the spectral variability is controlled by the presence of ferrous and ferric iron in such minerals as pyroxene, olivine, hematite, goethite, and poorly crystalline iron oxides or glass. A broad, nearly ubiquitous absorption feature centered at 2.25 ??m is attributed to opaline (amorphous, hydrated) silica and is found to correlate spatially with mapped geologic surface units. Laboratory analyses show the silica to be consistently present as a deposited phase, including incrustations downwind from solfatara vents, cementing agent for ash duricrusts, and thin coatings on the youngest lava flow surfaces. A second, Ti-rich upper coating on young flows also influences spectral behavior. This study demonstrates that secondary silica is mobile in the Ka u Desert on a variety of time scales and spatial domains. The investigation from remote, field, and laboratory perspectives also mimics exploration of Mars using orbital and landed missions, with important implications for spectral characterization of coated basalts and formation of opaline silica in arid, acidic alteration environments. Copyright 2010 by the American Geophysical Union.

  10. Electrostatic contribution of surface charge residues to the stability of a thermophilic protein: benchmarking experimental and predicted pKa values.

    Directory of Open Access Journals (Sweden)

    Chi-Ho Chan

    Full Text Available Optimization of the surface charges is a promising strategy for increasing thermostability of proteins. Electrostatic contribution of ionizable groups to the protein stability can be estimated from the differences between the pKa values in the folded and unfolded states of a protein. Using this pKa-shift approach, we experimentally measured the electrostatic contribution of all aspartate and glutamate residues to the stability of a thermophilic ribosomal protein L30e from Thermococcus celer. The pKa values in the unfolded state were found to be similar to model compound pKas. The pKa values in both the folded and unfolded states obtained at 298 and 333 K were similar, suggesting that electrostatic contribution of ionizable groups to the protein stability were insensitive to temperature changes. The experimental pKa values for the L30e protein in the folded state were used as a benchmark to test the robustness of pKa prediction by various computational methods such as H++, MCCE, MEAD, pKD, PropKa, and UHBD. Although the predicted pKa values were affected by crystal contacts that may alter the side-chain conformation of surface charged residues, most computational methods performed well, with correlation coefficients between experimental and calculated pKa values ranging from 0.49 to 0.91 (p<0.01. The changes in protein stability derived from the experimental pKa-shift approach correlate well (r = 0.81 with those obtained from stability measurements of charge-to-alanine substituted variants of the L30e protein. Our results demonstrate that the knowledge of the pKa values in the folded state provides sufficient rationale for the redesign of protein surface charges leading to improved protein stability.

  11. ANÁLISE Multimétodo de Percepções de Agentes Intervenientes na Pesquisa e no Gerenciamento de Agregados Reciclados de Resíduos da Construção Civil

    OpenAIRE

    REMBISKI, F. D.

    2011-01-01

    O gerenciamento dos resíduos de construção civil apresenta limitações tanto pela iniciativa privada quanto pelo setor público. Isso ocorre nos canteiro de obras, nas usinas de reciclagem e na reutilização desses resíduos, em larga escala, em substituição aos agregados naturais para fabricação de materiais de construção. Este trabalho objetiva identificar e analisar os elementos que dificultam o desenvolvimento do setor da reciclagem de resíduos da construção civil, bem como utilizar os result...

  12. Geração de resíduos de madeira e derivados da indústria moveleira em função das variáveis de produção

    OpenAIRE

    Hillig,Éverton; Schneider,Vania Elisabete; Pavoni,Eloide Teresa

    2009-01-01

    Os processos produtivos da cadeia madeira-móveis geram quantidades significativas de resíduos de madeira, os quais nem sempre têm uma destinação correta. O potencial de aproveitamento destes resíduos é significativo, quer seja como matéria-prima secundária, quer seja pelo seu potencial energético. O gerenciamento dos resíduos é um dos desafios à gestão e ao desempenho ambiental das empresas. Neste trabalho, utilizou-se a análise multivariada, com extração de componentes principais, para anali...

  13. Avaliação de diferentes concentrações de adubo orgânico produzido a partir de resíduos de pescados e vegetais no desenvolvimento da cultura da cebolinha (Allium schoenoprasum)

    OpenAIRE

    Bruno, Fillipe Herbert Sales; Universidade Federal do Ceará; Sales, Ronaldo de Oliveira; Universidade Federal do Ceará; Oliveira, André Luiz Torres de; Universidade Federal do Ceará; Freitas, João Batista Santiago; Universidade Federal do Ceará

    2013-01-01

    O crescimento populacional nos centros urbanos tem agravado o problema do gerenciamento dos resíduos sólidos gerados pelos habitantes, causados principalmente, pelo volume de lixo produzido e pelo estilo de vida consumista. Neste contexto a reciclagem de resíduos, seja de origem agrícola ou industrial, oriundos das mais diversas cadeias produtivas, cujos descartes indevidos podem causar impactos negativos ao ambiente, como é o caso dos resíduos provenientes da indústria pesqueira e dos vegeta...

  14. Avaliação da composição mineral do adubo orgânico produzido a partir de resíduos de pescados e vegetais no desenvolvimento da cultura da cebolinha (Allium schoenoprasum)

    OpenAIRE

    Bruno, Fillipe Herbert Sales; Universidade Federal do Ceará; Sales, Ronaldo de Oliveira; Universidade Federal do Ceará; Oliveira, André Luiz Torres de; Universidade Federal do Ceará; Freitas, João Batista Santiago; Universidade Federal do Ceará

    2013-01-01

    O crescimento populacional nos centros urbanos tem agravado o problema do gerenciamento dos resíduos sólidos gerados pelos habitantes, causados principalmente, pelo volume de lixo produzido e pelo estilo de vida consumista. Neste contexto a reciclagem de resíduos, seja de origem agrícola ou industrial, oriundos das mais diversas cadeias produtivas, cujos descartes indevidos podem causar impactos negativos ao ambiente, como é o caso dos resíduos provenientes da indústria pesqueira e dos vegeta...

  15. PROPRIEDADES FÍSICO-QUÍMICAS DE RESÍDUOS AGROFLORESTAIS AMAZÔNICOS PARA USO COMO SUBSTRATO

    Directory of Open Access Journals (Sweden)

    Izabele Domingues Soares

    2014-09-01

    Full Text Available Na Amazônia, são produzidas anualmente grandes quantidades de resíduos agroflorestais, o que demanda pesquisas para avaliar a viabilidade técnica, econômica e ambiental desses materiais como, por exemplo, sua utilização como substrato na produção de mudas florestais. O objetivo do estudo foi determinar as propriedades físicas e químicas de materiais com potencial para substrato, como casca de amendoim, casca de arroz in natura, pó de serra semidecomposto, resíduo de açaí, casca de cupuaçu, casca de café, casca de coco verde e casca de castanha-do-brasil. Foram avaliados os teores totais de nitrogênio (N, Ca, K, P, Mg, Cu, Fe, Mn, Zn, além do pH em água, densidade, capacidade de retenção de água (CRA e relação poro/sólido.  A casca de castanha apresentou os maiores valores na maioria das características avaliadas, exceto para a capacidade de retenção de água. O resíduo que apresentou as menores quantidades de nutrientes ou baixos valores das características físicas analisadas foi o pó de serra. Palavra-chave: produção de mudas, uso agrícola, Amazônia.   PHYSICO-CHEMICAL PROPERTIES OF AMAZON AGROFORESTRY RESIDUES FOR USE AS SUBSTRATE ABSTRACT In the Amazon are produced annually large quantities of residues, which demand agroforestry research to assess the technical, economic and environmental viability of the agricultural use of these materials as, for example, a substrate for forest seedling production. The objective of this study was to determine physical and chemical properties of the following materials with potential for substrate: peanut husk, rice husk in natura, sawdust semidecomposed, açai residues, cupuassu bark, coffee husk, green coconut husk and bark of brown-of-brazil. Were evaluated total contents of N, K, Ca, P, Mg, Cu, Fe, Mn, Zn; besides the pH in water, density, water retention capacity (CRA and the P/S ratio. The bark of brown-of-brazil presented the highest values for the majority of

  16. Processamento auditivo em indivíduos com epilepsia de lobo temporal Auditory processing in patients with temporal lobe epilepsy

    Directory of Open Access Journals (Sweden)

    Juliana Meneguello

    2006-08-01

    Full Text Available A epilepsia do lobo temporal ocasiona descargas elétricas excessivas onde a via auditiva tem sua estação final. É uma das formas mais comuns e de mais difícil controle da doença. O correto processamento dos estímulos auditivos necessita da integridade anatômica e funcional de todas as estruturas envolvidas na via auditiva. OBJETIVO: Verificar o Processamento Auditivo de pacientes portadores de epilepsia do lobo temporal quanto aos mecanismos de discriminação de sons em seqüência e de padrões tonais, discriminação da direção da fonte sonora e atenção seletiva para sons verbais e não-verbais. MÉTODO: Foram avaliados oito indivíduos com epilepsia do lobo temporal confirmada e com foco restrito a essa região, através dos testes auditivos especiais: Teste de Localização Sonora, Teste de Padrão de Duração, Teste Dicótico de Dígitos e Teste Dicótico Não-Verbal. O seu desempenho foi comparado ao de indivíduos sem alteração neurológica (estudo caso-controle. RESULTADO: Os sujeitos com epilepsia do lobo temporal apresentaram desempenho semelhante aos do grupo controle quanto ao mecanismo de discriminação da direção da fonte sonora e desempenho inferior quanto aos demais mecanismos avaliados. CONCLUSÃO: Indivíduos com epilepsia do lobo temporal apresentaram maior prejuízo no processamento auditivo que os sem danos corticais, de idades semelhantes.Temporal epilepsy, one of the most common presentation of this pathology, causes excessive electrical discharges in the area where we have the final station of the auditory pathway. Both the anatomical and functional integrity of the auditory pathway structures are essential for the correct processing of auditory stimuli. AIM: to check the Auditory Processing in patients with temporal lobe epilepsy regarding the auditory mechanisms of discrimination from sequential sounds and tone patterns, discrimination of the sound source direction and selective attention to verbal

  17. Evolução e desafios no gerenciamento dos resíduos sólidos urbanos no Brasil

    Directory of Open Access Journals (Sweden)

    Victor Fernandez Nascimento

    2015-11-01

    Full Text Available A geração dos resíduos sólidos urbanos (RSU no Brasil vem aumentando ao longo do tempo, com alterações na qualidade do resíduo, o que levanta discussões a respeito do gerenciamento e da importância em se destinar estes resíduos adequadamente. Atualmente as questões que envolvem a gestão dos RSU têm enfoque central no cumprimento de políticas públicas. A partir da implementação efetiva da Política Nacional de Resíduos Sólidos (PNRS - lei nº 12.305/2010 é que se esperam mudanças no panorama dos resíduos sólidos no Brasil. Por conta disso, este trabalho faz um levantamento bibliográfico que tem como objetivo abordar aspectos sobre os RSU no Brasil, considerando aqueles esperados para acontecer no setor público após a implementação da PNRS. Os dados apresentados e discutidos permitiram entender a evolução da gestão dos RSU no Brasil e alguns desafios para o cumprimento das determinações da PNRS, como, por exemplo, a expansão da coleta e tratamento dos RSU, o papel mais ativo da sociedade nos processos que envolvem a separação dos resíduos e a dificuldade da erradicação de lixões e sua substituição por aterros sanitários. Em geral, apesar de terem ocorrido melhoras no gerenciamento dos RSU, estas não foram suficientes para que as mudanças propostas pela PNRS fossem cumpridas e para que se estabeleça uma gestão integrada de RSU mais eficaz e sustentável tanto ao meio ambiente quanto à sociedade, denotando a emergência de soluções estruturais no setor de gerenciamentos dos RSU no Brasil.

  18. Mineralização de nitrogênio em latossolos adubados com resíduos orgânicos

    Directory of Open Access Journals (Sweden)

    Waldete Japiassu de Oliveira Carneiro

    2013-06-01

    Full Text Available A taxa de mineralização do nitrogênio (N varia de um resíduo orgânico para outro, evidenciando-se dependente da sua composição química e interação do material orgânico com o solo. Este estudo foi realizado com o objetivo de avaliar a dinâmica de mineralização de N de resíduos orgânicos incubados em Latossolos. O experimento foi conduzido no período de julho de 2007 a abril de 2008, sendo incubadas amostras de estercos, lodos, compostos, substrato e turfa em areia lavada, Latossolo Vermelho-Amarelo (LVA e Latossolo Vermelho distroférrico (LVdf, com 240 e 670 g kg-1 de argila, respectivamente. O N mineralizado foi avaliado medindo-se os teores de N-NH4+ e N-NO3- em lixiviados coletados aos 15, 30, 45, 60, 75, 90, 120, 150, 180, 210, 240 e 270 dias de incubação. A mineralização de N ocorreu a maiores taxas nos períodos iniciais de incubação. O N mineralizado (33 a 199,2 mg kg-1 após 270 dias de incubação é regulado pelos teores de N total e de carbono solúvel em água dos resíduos orgânicos. Independentemente do meio utilizado para incubação, os estercos de galinha e de codorna propiciaram os maiores teores de N mineralizado nos Latossolos. À exceção dos estercos de galinha e codorna, há imobilização líquida de N no LVA; mineralização líquida de N é verificada no LVdf, para todos os resíduos orgânicos. Em relação às formas de N disponibilizadas pelos resíduos, predomina o N-nitrato, sendo a proporção N-nítrico/N-amoniacal dependente da mistura solo-resíduo estudada.

  19. Potencial evocado auditivo de tronco encefálico por via óssea em indivíduos com perda auditiva sensorioneural

    Directory of Open Access Journals (Sweden)

    Luciana Castelo Branco Camurça Fernandes

    2013-06-01

    Full Text Available OBJETIVO: caracterizar os resultados do PEATE por via óssea em indivíduos com perda auditiva sensorioneural leve, comparando esses dados com o grupo controle, formado por indivíduos audiologicamente normais. MÉTODO: a amostra foi constituída por 40 adultos, de ambos os sexos, com faixa etária de 18 a 55 anos, distribuídos em um grupo controle de 30 indivíduos com audição normal e um grupo estudo composto de 10 indivíduos com perda auditiva sensorioneural de grau leve. O PEATE foi realizado com equipamento EP15, da marca Interacoustics. O estímulo utilizado foi o clique com taxa de apresentação de 27,7/s, em um total de 2000 estímulos, com polaridade de rarefação por VA e alternada para VO e filtro passa-banda de 50Hz e 3000Hz. RESULTADOS: em indivíduos com perda sensorioneural de grau leve, não houve diferenças estatisticamente significantes entre o limiar do PEATE por via aérea e óssea, estando esses limiares equivalentes, com GAP aéreo-ósseo menor que 10dB. A latência da onda V no limiar eletrofisiológico e a 50 dBnNA foram menores que as referidas latências observadas em indivíduos com audição normal. CONCLUSÃO: foram encontrados limiares eletrofisiológicos por via óssea equivalente aos limiares obtidos por via aérea, com presença de GAP aéreo-ósseo menor que 10dBnNA. Assim a utilização do PEATE por VO fornece dados para uma caracterização mais detalhada do tipo da perda auditiva.

  20. Queixas orais e verificação da fala de indivíduos com síndrome da ardência bucal

    Directory of Open Access Journals (Sweden)

    Silvana da Gama Pastana

    2013-08-01

    Full Text Available OBJETIVOS: identificar queixas referentes às funções orais relacionadas ao sintoma de ardência bucal e verificar alterações na articulação da fala MÉTODO: participaram do estudo 22 indivíduos com faixa etária entre 44 a 78 anos, diagnosticados na Clínica de Estomatologia da Universidade do Estado do Rio de Janeiro. Foi realizado levantamento dos dados a partir de questionário específico e gravação audiovisual da fala utilizando fichário evocativo. RESULTADOS: foram relatados sintomas específicos de ardência por 77% dos sujeitos e em associação com dor por 23%. Sintomas associados como boca seca, alteração do paladar e olfato foram referidos por 86% dos indivíduos. A língua foi referida com sintoma de ardência em 82% dos indivíduos, representando a estrutura mais acometida. A intensidade da ardência foi referida como moderada por 64%. A forma de ocorrência do sintoma foi relatada como contínua por 64% dos indivíduos. Do total, 82% relataram fazer uso de estratégias para minimizar o sintoma da ardência. Em relação às funções orais, 27% queixaram-se de cansaço na fala, 14% de cansaço na mastigação e 9% de engasgos à deglutição, sendo que de 32% relataram aumento da intensidade da ardência na fala e 9% na mastigação. Na análise de fala, em 95% da amostra, não houve ocorrência de alteração, sendo a imprecisão articulatória identificada em 5% dos indivíduos avaliados. CONCLUSÃO: foram identificadas queixas orais como cansaço ao falar e mastigar e aumento da intensidade do sintoma de ardência nestas funções, não tendo sido evidenciadas modificações na articulação da fala nos indivíduos com Síndrome da Ardência Bucal investigados nessa pesquisa.

  1. A New Blind Pointing Model Improves Large Reflector Antennas Precision Pointing at Ka-Band (32 GHz)

    Science.gov (United States)

    Rochblatt, David J.

    2009-01-01

    The National Aeronautics and Space Administration (NASA), Jet Propulsion Laboratory (JPL)-Deep Space Network (DSN) subnet of 34-m Beam Waveguide (BWG) Antennas was recently upgraded with Ka-Band (32-GHz) frequency feeds for space research and communication. For normal telemetry tracking a Ka-Band monopulse system is used, which typically yields 1.6-mdeg mean radial error (MRE) pointing accuracy on the 34-m diameter antennas. However, for the monopulse to be able to acquire and lock, for special radio science applications where monopulse cannot be used, or as a back-up for the monopulse, high-precision open-loop blind pointing is required. This paper describes a new 4th order pointing model and calibration technique, which was developed and applied to the DSN 34-m BWG antennas yielding 1.8 to 3.0-mdeg MRE pointing accuracy and amplitude stability of 0.2 dB, at Ka-Band, and successfully used for the CASSINI spacecraft occultation experiment at Saturn and Titan. In addition, the new 4th order pointing model was used during a telemetry experiment at Ka-Band (32 GHz) utilizing the Mars Reconnaissance Orbiter (MRO) spacecraft while at a distance of 0.225 astronomical units (AU) from Earth and communicating with a DSN 34-m BWG antenna at a record high rate of 6-megabits per second (Mb/s).

  2. Correlation of fluvial sequences in the Mediterranean basin over the last 200 ka and their relationship to climate change

    Science.gov (United States)

    Macklin, M. G.; Fuller, I. C.; Lewin, J.; Maas, G. S.; Passmore, D. G.; Rose, J.; Woodward, J. C.; Black, S.; Hamlin, R. H. B.; Rowan, J. S.

    2002-08-01

    This paper presents a new correlation of Late and Middle Pleistocene fluvial sedimentary sequences in Greek, Libyan and Spanish river basins and evaluates river response to climate change over the Last Interglacial-Glacial Cycle. Over the past 200,000 years there have been at least 13 major alluviation episodes in the Mediterranean, although the amplitude, frequency and possibly, duration of these events varied significantly across the region. Parts of Oxygen Isotope Stage (OIS) 5 appears to have been periods of pronounced landscape change in many Mediterranean catchments with major river aggradation occurring at ˜109-111 ka (during OIS 5d) and most notably at ˜88 ka (OIS 5b/5a boundary). Other parts of OIS 5 appear to have been periods of relative fluvial inactivity. OIS 2 and 3 were both characterised by an apparent increase in the number of alluviation events, and this record of river behaviour parallels many other palaeoenvironmental records in the region which also show more frequent climate fluctuations between ˜12 and 65 ka. There is evidence for a high degree of synchrony in major river aggradation events across the Mediterranean in catchments with very different sizes, tectonic regimes and histories. Climate-related changes in catchment hydrology and vegetation cover over the last 200 ka would appear to be the primary control of large-scale (catchment wide) sedimentation over time periods of between 10 3 and 10 4 years.

  3. When the River Flows Upstream: The Appearance, Adaptation and Extinction of the Nu-Mah-ka-kee People

    Science.gov (United States)

    Siry, Joseph Vincent

    1978-01-01

    Describing the early and late history of the Mandan tribe known as the Nu-Mah-ka-kee people, this article emphasizes the tribe's agricultural resourcefulness in the severe climate of the Dakotas and details survival problems brought on by the Sioux and the white fur traders. (JC)

  4. Vasyl' Danylenko, ed. Ukrains'ka intelihentsiia i vlada: Zvedennia sekretnoho viddilu DPU USRR 1927–1929 rr.

    Directory of Open Access Journals (Sweden)

    Olena Palko

    2015-01-01

    Full Text Available Vasyl' Danylenko, ed. Ukrains'ka intelihentsiia i vlada: Zvedennia sekretnoho viddilu DPU USRR 1927–1929 rr. [The Ukrainian Intelligentsia and State Power. Summaries of the Secret Department of State Political Administration of the Ukrainian SSR for 1927–1929]. Kyiv: Tempora, 2012. 756 pp. Illustrations. Appendix. Indexes. 70 UAH, cloth.

  5. Accurate pKa Calculation of the Conjugate Acids of Alkanolamines, Alkaloids and Nucleotide Bases by Quantum Chemical Methods

    NARCIS (Netherlands)

    Gangarapu, S.; Marcelis, A.T.M.; Zuilhof, H.

    2013-01-01

    The pKa of the conjugate acids of alkanolamines, neurotransmitters, alkaloid drugs and nucleotide bases are calculated with density functional methods (B3LYP, M08-HX and M11-L) and ab initio methods (SCS-MP2, G3). Implicit solvent effects are included with a conductor-like polarizable continuum

  6. Alati peab olema valmis mitte ainult plaan B, vaid ka C, D, E ... / Ülle Järv

    Index Scriptorium Estoniae

    Järv, Ülle, 1958-

    2008-01-01

    Ilmunud ka: Finansovõi Menedzhment : infovõpusk nr. 22 märts lk. 8-9. Baltika strateegiline pööre sisaldas kolme teemat: uue strateegia finantseerimine, uue finantsaruandlussüsteemi ülesehitamine ning riskide määratlemine ja juhtimine

  7. Identifikace – co odhalí zubní lékařství? Kazuistika

    Czech Academy of Sciences Publication Activity Database

    Dostálová, T.; Eliášová, H.; Fojtášek, L.; Zvárová, Jana; Teuberová, Z.; Seydlová, M.

    2007-01-01

    Roč. 17, č. 4 (2007), s. 16-19 ISSN 1210-3381 R&D Projects: GA AV ČR 1ET200300413 Institutional research plan: CEZ:AV0Z10300504 Keywords : zubní lékařství * forenzní * identifikace Subject RIV: EC - Immunology

  8. Benthic foraminifera and bottom water evolution in the middle-southern Okinawa Trough during the last 18 ka

    Institute of Scientific and Technical Information of China (English)

    LI Tiegang; XIANG Rong; SUN Rongtao; CAO Qiyuan

    2005-01-01

    A piston sediment core E017 from the middle-southern Okinawa Trough was investigated. A preliminary study of the deep-water evolution since 18 cal. ka BP was performed based on the quantitative census data of benthic foraminiferal fauna, together with planktonic foraminiferal oxygen and carbon isotope, AMS14C dating, and the previous results achieved in the southern Okinawa Trough. The result shows that the benthic fauna was dominated by Bulimina aculeata (d'Orbigny), Uvigerina peregrina (Cushman), Hispid Uvigerina and Uvigerina dirupta (Todd) during the glaciation-deglaciation before 9.2 cal. ka BP, while Epistominella exigua (Brady), Pullenia bulloides (d'Orbigny), Cibicidoides hyalina (Hofker), Sphaeroidina bulloides (d'Orbigny) and Globocassidulina subglobosa (Brady) predominated the fauna in the post-glacial period after 9.2 cal. ka BP. The benthic foraminifera accumulation rate (BFAR), paleoproductivity estimates and benthic foraminiferal assemblage conformably indicate that surface water paleoproductivity and organic matter flux during the glaciation-deglaciation were higher than those of the post-glacial period in the middle-southern Okinawa Trough, and gradually enhanced from the southern to the central Okinawa Trough during the glaciation-deglaciation, which could be caused by the discrepancy of the terrigenous nutrients supply. High abundances of E. exigua, an indicator of pulsed organic matter input, after 9.2 cal. ka BP may indicate that the intensity of seasonally riverine pulsed flux during the post-glacial period was stronger than that of the glaciation-deglaciation period, and the seasonal influx in the central trough might be stronger than in the south. The temporal distributions of the typical species indicating bottom water oxygen content and ventilation condition show that the ventilation of the bottom water during the post-glacial period is more active than the glaciation-deglaciation, which reflects that the evolution of the intermediate and

  9. 14C ages and activity for the past 50 ka at Volcán Galeras, Colombia

    Science.gov (United States)

    Banks, N.G.; Calvache, V.M.L.; Williams, S.N.

    1997-01-01

    Volcán Galeras is the southernmost Colombian volcano with well-recorded historic activity. The volcano is part of a large and complex volcanic center upon which 400,000 people live. Historic activity has centered on a small-volume cone inside the youngest of several large amphitheaters that breach the west flank of the volcano, away from the city of Pasto (population 300,000). Lava flows (SiO2 between 54.6 and 64.7 wt.%) have dominated activity for more than 1 Ma, but explosive events have also occurred. Joint studies by volcanologists from Colombia, Ecuador, Peru, Bolivia, Argentina, and the United States produced 24 new14C ages and more than 100 stratigraphic sections to interpret the past 50 ka of activity at Galeras, including sector collapse events. The youngest collapse event truncated 12.8 ka lava flows and may have occurred as recently as 8 to 10 ka. Tephra-fall material rapidly thins and becomes finer away from the vent area. The only widespread marker in the < 10 ka section is a biotite-bearing tephra deposited between 4.1 and 4.5 ka from a source south of Galeras. It separates cryoturbated from largely undisturbed layers on Galeras, and thus dates a stratigraphic horizon which is useful in the interpretation of other volcanoes and geotectonics in the equatorial Andes. Pyroclastic flows during the past 50 ka have been small to moderate in volume, but they have left numerous thin deposits on the north and east flanks where lava flows have been impeded by crater and amphitheater walls. Many of the pyroclastic-flow deposits are lithic rich, with fines and clasts so strongly altered by hydrothermal action before eruption that they, as well as the sector collapse deposits, resemble waste dumps of leached cappings from disseminated sulfide deposits more than volcanogenic deposits. This evidence of a long-lived hydrothermal system indicates susceptibility to mass failure and explosive events higher than expected for a volcano built largely by lava flows and

  10. The Alleret Maar lacustrine sequence (French Massif Central): a 150 ka long early-middle Pleistocene continental paleoenvironmental record.

    Science.gov (United States)

    Nomade, S.; Pastre, J.; Guillou, H.; Gauthier, A.; Scaillet, S.

    2008-12-01

    Lacustrine maar sequences of the French Massif Central are of great interest for paleoclimatic and paleoenvironmental reconstructions of mid-latitudes Quaternary continental environments. In particular, the western Velay region yields exceptional sequences spanning the last 450 ka (Reille et al., J. Quat. Sci. 2000). However, older sequences remain largely unknown despite the presence of interbedded alkaline tephras allowing precise absolute radiochronological control of many lacustrine squences. The Alleret maar is a 1500 m wide phreatomagmatic crater that provides a long lacustrine sequence (41 m). The upper part of this sequence (AL2 core, 14.6 m) was studied between 2005 and 2006 (Pastre et al., C. R. Acad Sci, 2007). A 39Ar/40Ar date (557 ± 5ka) obtained from an interbedded tephra layer located at 7m as well as the associated pollen data attribute the beginning of this sequence to the MIS 15. Thanks to the AL3 core recovered in 2005 (40.6 m, CNRS Meudon) several new tephra layers were discovered in the bottom part of this lacustrine sequence. Three new 39Ar/40Ar ages (single crystal analyses) from trachytic tephra layers were obtained at the LSCE Argon Laboratory (France). These layers are located at -30.2, -36.2 and -39.2m. Ages obtained relative to the ACR-2 flux standard (1,201Ma, Kuiper et al., Science, 2008) range from 692 ± 6 ka (MSWD: 2.3, n=18) for the youngest (-30.2m) to 726 ± 9Ka Ka (MSWD: 2.2, n=12) for the lowest tephra located at -39.2m. These new dates indicate a relatively homogeneous deposition rate of 3.5cm/ka and that the last 10 meters cover the MIS 17-MIS18 period. According to these current radiochronological data the complete lacustrine sequence last more than 150ka. Ongoing sedimentary and pollen studies will allow to extend the paleoenvironmental and paleoclimatic records of the French Massif Central towards the beginning of the early middle Pleistocene.

  11. Somatotipo, fatores de risco e razão cintura-estatura em indivíduos fisicamente ativos

    Directory of Open Access Journals (Sweden)

    Anderson Henrique Souza de Almeida

    2015-08-01

    Full Text Available INTRODUÇÃO: A relação entre o tipo físico e o risco cardiovascular vem sendo estudada em diversas populações do mundo. No Brasil, estudos que avaliam esta relação são escassos, principalmente quando se trata de indivíduos que praticam atividades físicas. Objetivo: Analisar a relação do somatotipo com fatores de risco cardiovascular e razão cintura-estatura (RCEst em praticantes de atividade física.MÉTODOS: Trata-se de uma pesquisa descritiva com delineamento transversal. A amostra foi constituída por 280 sujeitos, usuários da pista de Cooper da Universidade Federal de Pernambuco, na cidade de Recife, PE, Brasil. Para identificação do nível de atividade física, utilizou-se a versão curta do International Physical Activity Questionnaire(IPAQ. Os indivíduos classificados como muito ativos, ativos ou irregularmente ativos A ou B, foram incluídos na amostra. Excluíram-se os sujeitos inativos fisicamente. O somatotipo foi estimado através do protocolo antropométrico de Carter e Heath (1990. Determinaram-se como fatores de risco cardiovascular o tabagismo, o consumo de bebida alcoólica e a pressão arterial (PA. Empregou-se a estatística descritiva para caracterização da amostra, em seguida, utilizou-se a Análise de Variância Multivariada (MANOVA, com nível de significância de p < 0,05.RESULTADOS: Não foi identificada relação significativa para as variáveis tabagismo e consumo de bebida alcoólica. Na análise da PA (Pillai's trace = 0,082; F = 8,187; p < 0,05 e da RCEst (Pillai's trace = 0,298; F = 39,081; p < 0,05, verificou-se significância estatística com o somatotipo.CONCLUSÃO: O tipo físico foi positivo e significativamente relacionado com a PA e com a RCEst, demonstrando que esse indicador antropométrico pode ser utilizado para predizer precocemente o risco de desenvolvimento de doenças cardiovasculares.

  12. Habilidades cognitivas em indivíduos muito idosos: um estudo longitudinal Cognitive abilities in older seniors: a longitudinal study

    Directory of Open Access Journals (Sweden)

    Irani I. de Lima Argimon

    2005-02-01

    Full Text Available Estudos longitudinais com idosos com mais de oitenta anos são escassos na literatura. A pesquisa foi delineada com o objetivo de analisar as modificações no perfil de algumas habilidades cognitivas em indivíduos muito idosos, em dois momentos, com um intervalo de três anos. Pesquisa do tipo quantitativo, com delineamento longitudinal e prospectivo. A amostra, randômica, foi constituída por 66 indivíduos de 80 a 95 anos de idade na etapa I e, três anos após, na etapa II, por 46 idosos. Os instrumentos usados foram: Escala de Depressão Geriátrica, Questionário de Percepção Subjetiva de Queixas de Memória, Mini-Exame do Estado Mental, Span de Números, Teste de Lembranças Livres e com Pistas de Buschke, Teste de Fluência Verbal - Categoria Animal. Houve uma pequena tendência de decréscimo no desempenho cognitivo em um período de três anos. Maior número de atividades de lazer e mais anos de escolaridade foram fatores preditivos de menor variação no desempenho cognitivo. Apesar da idade avançada, os idosos apresentaram um desempenho de habilidades cognitivas cujo declínio foi de intensidade leve, não sendo suficiente para acarretar mudanças significativas no seu padrão cognitivo.Longitudinal studies of older seniors (over 80 years are rare in the literature. This research was designed to study cognitive abilities in the oldest old at two different moments with a three-year interval. The research was quantitative, with a longitudinal and prospective design. The sample consisted of 66 individuals from 80 to 95 years of age, randomly selected for phase I, with 46 of these individuals tested again three years later, in phase II. The instruments used were: Geriatric Depression Scale, Subjective Perception of Memory Problems, Mini-Mental State Examination, Digit Span, Buschke Test of Free and Cued Recall, and the Verbal Fluency Test - Animal Category. The results indicated that there was a small downward trend in the older

  13. Resíduos Sólidos na Bacia do Rio Ivinhema-MS | Solid Waste in River Basin Ivinhema-MS

    Directory of Open Access Journals (Sweden)

    Flávia Akemi Ikuta

    2014-05-01

    Full Text Available Normal 0 21 false false false PT-BR X-NONE X-NONE Introdução: O trabalho apresenta parte dos resultados da pesquisa intitulada “Geração e disposição de resíduos sólidos urbanos e as formas de organização dos trabalhadores catadores de resíduos recicláveis nos municípios localizados na bacia do rio Ivinhema-MS”, realizada com apoio do CNPq. A área estudada compreende um conjunto de 25 municípios, localizados na bacia do Rio Ivinhema, na região sudeste do Estado de Mato Grosso do Sul, com uma população total aproximada de 675.569 habitantes, sendo 81,92% urbana (IBGE, Censo 2010. Dentre os principais objetivos destacam-se: realizar um diagnóstico da situação da produção e destinação de resíduos sólidos; e contribuir para a identificação de ações prioritárias a serem desenvolvidas na área, tendo em vista o melhor gerenciamento dos resíduos sólidos. Metodologia/Desenvolvimento: O desenvolvimento da pesquisa apoiou-se em ampla revisão bibliográfica sobre as principais questões teórico-metodológicas ligadas ao tema escolhido, o que fundamentou sua melhor compreensão e orientação da pesquisa, bem como a coleta de dados de fontes secundárias. Os principais instrumentos utilizados para a coleta de dados foram: questionários, aplicados junto às prefeituras municipais, empresas envolvidas no manejo de resíduos e organizações de catadores (associações ou cooperativas; entrevistas não estruturadas, para esclarecimento de dúvidas sobre os questionários e complementação de informações; e observações realizadas em trabalho de campo nos locais de disposição dos diversos tipos de resíduos sólidos urbanos, para complementar dados, obter informações com registros fotográficos e confrontar os dados informados em questionários. Após a coleta, foi realizada a tabulação e sistematização, facilitando a verificação de semelhanças, diferenças, relações e inter-relações entre os dados. Em

  14. A 20-15 ka high-resolution paleomagnetic secular variation record from Black Sea sediments - no evidence for the 'Hilina Pali excursion'?

    Science.gov (United States)

    Liu, Jiabo; Nowaczyk, Norbert R.; Frank, Ute; Arz, Helge W.

    2018-06-01

    A comprehensive magnetostratigraphic investigation on sixteen sediment cores from the southeastern Black Sea yielded a very detailed high-quality paleosecular variation (PSV) record spanning from 20 to 15 ka. The age models are based on radiocarbon dating, stratigraphic correlation, and tephrochronology. Further age constraints were obtained by correlating four meltwater events, described from the western Black Sea, ranging in age from about 17 to 15 ka, with maxima in K/Ti ratios, obtained from X-ray fluorescence (XRF) scanning, and minima in S-ratios, reflecting increased hematite content, in the studied cores. Since the sedimentation rates in the investigated time window are up to 50 cm ka-1, the obtained PSVs records enabled a stacking using 50-yr bins. A directional anomaly at 18.5 ka, associated with pronounced swings in inclination and declination, as well as a low in relative paleointensity (rPI), is probably contemporaneous with the Hilina Pali excursion, originally reported from Hawaiian lava flows. However, virtual geomagnetic poles (VGPs) calculated from Black Sea sediments are not located at latitudes lower than 60°N, which denotes normal, though pronounced secular variations. During the postulated Hilina Pali excursion, the VGPs calculated from Black Sea data migrated clockwise only along the coasts of the Arctic Ocean from NE Canada (20.0 ka), via Alaska (18.6 ka) and NE Siberia (18.0 ka) to Svalbard (17.0 ka), then looping clockwise through the Eastern Arctic Ocean.

  15. Residues in the H+ Translocation Site Define the pKa for Sugar Binding to LacY†

    Science.gov (United States)

    Smirnova, Irina; Kasho, Vladimir; Sugihara, Junichi; Choe, Jun-Yong; Kaback, H. Ronald

    2009-01-01

    A remarkably high pKa of approximately 10.5 has been determined for sugar-binding affinity to the lactose permease of Escherichia coli (LacY), indicating that, under physiological conditions, substrate binds to fully protonated LacY. We have now systematically tested site-directed replacements for the residues involved in sugar binding, as well as H+ translocation and coupling, in order to determine which residues may be responsible for this alkaline pKa. Mutations in the sugar-binding site (Glu126, Trp151, Glu269) markedly decrease affinity for sugar but do not alter the pKa for binding. In contrast, replacements for residues involved in H+ translocation (Arg302, Tyr236, His322, Asp240, Glu325, Lys319) exhibit pKa values for sugar binding that are either shifted toward neutral pH or independent of pH. Values for the apparent dissociation constant for sugar binding (Kdapp) increase greatly for all mutants except neutral replacements for Glu325 or Lys319, which are characterized by remarkably high affinity sugar binding (i.e., low Kdapp) from pH 5.5 to pH 11. The pH dependence of the on- and off-rate constants for sugar binding measured directly by stopped-flow fluorometry implicates koff as a major factor for the affinity change at alkaline pH and confirms the effects of pH on Kdapp inferred from steady-state fluorometry. These results indicate that the high pKa for sugar binding by wild-type LacY cannot be ascribed to any single amino acid residue but appears to reside within a complex of residues involved in H+ translocation. There is structural evidence for water bound in this complex, and the water could be the site of protonation responsible for the pH dependence of sugar binding. PMID:19689129

  16. Experimental determination of net protein charge and A(tot) and K(a) of nonvolatile buffers in canine plasma.

    Science.gov (United States)

    Constable, Peter D; Stämpfli, Henry R

    2005-01-01

    Acid-base abnormalities frequently are present in sick dogs. The mechanism for an acid-base disturbance can be determined with the simplified strong ion approach, which requires accurate values for the total concentration of plasma nonvolatile buffers (A(tot)) and the effective dissociation constant for plasma weak acids (K(a)). The aims of this study were to experimentally determine A(tot) and K(a) values for canine plasma. Plasma was harvested from 10 healthy dogs; the concentrations of quantitatively important strong ions (Na+, K+, Ca2+, Mg2+, Cl-, L-lactate) and nonvolatile buffer ions (total protein, albumin, phosphate) were determined; and the plasma was tonometered with CO2 at 37 degrees C. Strong ion difference (SID) was calculated from the measured strong ion concentrations, and nonlinear regression was used to estimate values for A(tot) and K(a), which were validated with data from an in vitro and in vivo study. Mean (+/- SD) values for canine plasma were A(tot) = (17.4 +/- 8.6) mM (equivalent to 0.273 mmol/g of total protein or 0.469 mmol/g of albumin); K(a) = (0.17 +/- 0.11) x 10(-7); pK(a) = 7.77. The calculated SID for normal canine plasma (pH = 7.40; P(CO2) = 37 mm Hg; [total protein] = 64 g/L) was 27 mEq/L. The net protein charge for normal canine plasma was 0.25 mEq/g of total protein or 0.42 mEq/g of albumin. Application of the experimentally determined values for A(tot), K(a), and net protein charge should improve understanding of the mechanism for complex acid-base disturbances in dogs.

  17. Experimental determination of net protein charge, [A]tot, and Ka of nonvolatile buffers in bird plasma.

    Science.gov (United States)

    Stämpfli, Henry; Taylor, Michael; McNicoll, Carl; Gancz, Ady Y; Constable, Peter D

    2006-06-01

    The quantitative mechanistic acid-base approach to clinical assessment of acid-base status requires species-specific values for [A]tot (the total concentration of nonvolatile buffers in plasma) and Ka (the effective dissociation constant for weak acids in plasma). The aim of this study was to determine [A]tot and Ka values for plasma in domestic pigeons. Plasma from 12 healthy commercial domestic pigeons was tonometered with 20% CO2 at 37 degrees C. Plasma pH, Pco2, and plasma concentrations of strong cations (Na, K, Ca), strong anions (Cl, L-lactate), and nonvolatile buffer ions (total protein, albumin, phosphate) were measured over a pH range of 6.8-7.7. Strong ion difference (SID) (SID5=Na+K+Ca-Cl-lactate) was used to calculate [A]tot and Ka from the measured pH and Pco2 and SID5. Mean (+/-SD) values for bird plasma were as follows: [A]tot=7.76+/-2.15 mmol/l (equivalent to 0.32 mmol/g of total protein, 0.51 mmol/g of albumin, 0.23 mmol/g of total solids); Ka=2.15+/-1.15x10(-7); and pKa=6.67. The net protein charge at normal pH (7.43) was estimated to be 6 meq/l; this value indicates that pigeon plasma has a much lower anion gap value than mammals after adjusting for high mean L-lactate concentrations induced by restraint during blood sampling. This finding indicates that plasma proteins in pigeons have a much lower net anion charge than mammalian plasma protein. An incidental finding was that total protein concentration measured by a multianalyzer system was consistently lower than the value for total solids measured by refractometer.

  18. Dust records in the Pleistocene sediments of Fraser Island: palaeoclimatic reconstruction of wind erosion over the last 600 ka

    International Nuclear Information System (INIS)

    Longmore, M.E.; McTainsh, G.H.

    1997-01-01

    Full text: Pleistocene lake sediments from a relic perched freshwater lake on Fraser Island have been found to date back to ca.600 ka using U/Th analysis of the organics. This sequence is one of the three longest terrestrial records of environmental change in Australia and the contained evidence of vegetation, fire and lake level changes (Longmore and Heijnis, 1996) and is an invaluable contribution to palaeoclimatic reconstruction. A younger sequence, dated by conventional radiocarbon analysis, has 6.5 m of continuous organic sedimentation from ca. 30 ka to the present. The last 8.5 ka has been analysed in detail, showing a mid-Holocene 'dry' period (Longmore, 1996). Continental aeolian dust from extreme wind erosional events has been measured in modern atmospheres (McTainsh, 1989; Knight et al., 1995) and deep sea cores (Hesse, 1994), but the terrestrial record of wind erosion during the Pleistocene is sparse. We will report on a pilot project to determine the presence of aeolian dust from extreme wind erosional events in the past in the sediments of Fraser Island lakes. Due to the highly weathered, well-sorted, siliceous nature of the dune sands forming the Island and the highly organic nature of the lake sediments (80-95% LOI), these are some of the few terrestrial sequences that permit separation of aeolian dust from local catchment materials. In the future, oxygen isotope and XRD analysis of the extracted dust will allow the most likely source of the entrained material to be determined and thus provide further evidence as to the wind regime during the last 600ka and 30ka respectively. The separation of dust from these terrestrial sequences is a major achievement and potentially may make a significant contribution to global palaeoclimatic models

  19. Response of benthic foraminifera to 4.2 ka cooling event in the Nakdong River delta, southeast Korea

    Science.gov (United States)

    Takata, H.; Khim, B. K.; Cheong, D.; Shin, S.

    2016-02-01

    Here we report the change of benthic foraminifera in response to 4.2 ka cooling event in the Nakdong River delta (southeastern Korea). It has been known that this cooling event caused climatic deteriorations in the world, which is closely related to the decline/development of the civilizations (e.g., Kawahata et al., 2009). This event was also correlated to one of Bond Events in the North Atlantic. Because coastal sediment depositions have been influenced by both oceanographic and terrestrial climatic changes, the study may provide us clue to understand the possible teleconnection of the cooling event between the North Atlantic and the East Asian margin. We investigated fossil benthic foraminiferal faunas and planktonic/total foraminiferal ratio (P/T ratio) at two borehole cores, ND-01 and ND-02 (landward and seaward sites, respectively). Common constituents are taxa from bay to shelf environments in the East Asian margin. Biotic response of benthic foraminifera partly changed after 4.2 ka showing that Haynesina sp. A (opportunistic species?) decreased significantly at core ND-01. In addition, P/T ratio at both core sites showed temporal decline at 4.2 ka. This suggests the decreasing influence of the seawater relative to the coastal water. Holocene fluctuations of the Tsushima Warm Current, a branch of Kuroshio, flowing off the Nakdong River delta, have been documented. The decline pattern of P/T ratio in this area is similar to that of total sulfur content in Lake Tougou-ike, southwestern Japan at 4 ka which was interpreted as the influence of the small sea-level falling (Kato et al., 2003). According to the similar stratigraphic variation patterns between our and their studies, our finding suggests that this event was not regional but related to the fluctuations of the Tsushima Warm Current. Thus, biotic response of benthic foraminifera in the Nakdong River delta recorded 4.2 ka cooling event related to temporal weakening of the Tsushima Warm Current.

  20. A New Ka-Band Scanning Radar Facility: Polarimetric and Doppler Spectra Measurements of Snow Events

    Science.gov (United States)

    Oue, M.; Kollias, P.; Luke, E. P.; Mead, J.

    2017-12-01

    Polarimetric radar analyses offer the capability of identification of ice hydrometeor species as well as their spatial distributions. In addition to polarimetric parameter observations, Doppler spectra measurements offer unique insights into ice particle properties according to particle fall velocities. In particular, millimeter-wavelength radar Doppler spectra can reveal supercooled liquid cloud droplets embedded in ice precipitation clouds. A Ka-band scanning polarimetric radar, named KASPR, was installed in an observation facility at Stony Brook University, located 22 km west of the KOKX NEXRAD radar at Upton, NY. The KASPR can measure Doppler spectra and full polarimetric variables, including radar reflectivity, differential reflectivity (ZDR), differential phase (φDP), specific differential phase (KDP), correlation coefficient (ρhv), and linear depolarization ratio (LDR). The facility also includes a micro-rain radar and a microwave radiometer capable of measuring reflectivity profiles and integrated liquid water path, respectively. The instruments collected initial datasets during two snowstorm events and two snow shower events in March 2017. The radar scan strategy was a combination of PPI scans at 4 elevation angles (10, 20, 45, and 60°) and RHI scans in polarimetry mode, and zenith pointing with Doppler spectra collection. During the snowstorm events the radar observed relatively larger ZDR (1-1.5 dB) and enhanced KDP (1-2 ° km-1) at heights corresponding to a plate/dendrite crystal growth regime. The Doppler spectra showed that slower-falling particles ( 1 m s-1). The weakly increased ZDR could be produced by large, faster falling particles such as quasi-spherical aggregates, while the enhanced KDP could be produced by highly-oriented oblate, slowly-falling particles. Below 2 km altitude, measurements of dual wavelength ratio (DWR) based on Ka and S-band reflectivities from the KASPR and NEXRAD radars were available. Larger DWR (>10 dB) suggested

  1. Determination of pKa values of alendronate sodium in aqueous solution by piecewise linear regression based on acid-base potentiometric titration.

    Science.gov (United States)

    Ke, Jing; Dou, Hanfei; Zhang, Ximin; Uhagaze, Dushimabararezi Serge; Ding, Xiali; Dong, Yuming

    2016-12-01

    As a mono-sodium salt form of alendronic acid, alendronate sodium presents multi-level ionization for the dissociation of its four hydroxyl groups. The dissociation constants of alendronate sodium were determined in this work by studying the piecewise linear relationship between volume of titrant and pH value based on acid-base potentiometric titration reaction. The distribution curves of alendronate sodium were drawn according to the determined pKa values. There were 4 dissociation constants (pKa 1 =2.43, pKa 2 =7.55, pKa 3 =10.80, pKa 4 =11.99, respectively) of alendronate sodium, and 12 existing forms, of which 4 could be ignored, existing in different pH environments.

  2. Reaproveitamento de resíduo sólido proveniente do setor siderúrgico em cerâmica vermelha

    OpenAIRE

    Oliveira,G. E.; Holanda,J. N. F.

    2004-01-01

    Este trabalho mostra os resultados de um estudo sobre a incorporação de resíduo sólido proveniente do setor siderúrgico na formulação de uma massa argilosa utilizada na fabricação de cerâmica vermelha. As massas preparadas continham os seguintes teores de resíduo de siderurgia: 0; 0,5; 1,0; 1,5; 2,0; 2,5 e 3,0% em peso. Os resultados de difração de raios X, distribuição de tamanho de partículas e limites de Atterberg são apresentados para as massas argilosas. Os corpos-de-prova foram conforma...

  3. Obtenção de biodiesel a partir de resíduos gordurosos obtidos de gordura animal - vísceras de frango

    OpenAIRE

    Mateus Afonso Gomes

    2010-01-01

    O foco principal do projeto foi estudar e avaliar os parâmetros da obtenção de Biodiesel tendo como matéria prima o resíduo gorduroso (OGR) obtido de gordura animal, particularmente a de frango. Os objetivos do projeto vão ao encontro de questões intimamente ligadas a área ambiental e socioeconômica que cercam a produção do biodiesel. Para isso, tornou-se necessário seguir as etapas do trabalho proposto e assim, determinar a viabilidade do projeto. Foi necessário obter os resíduos gordurosos ...

  4. Homo Juridicus: teorização sobre o conceito de indivíduo no âmbito do direito positivo brasileiro

    OpenAIRE

    Guilherme Frederico Gazineu Rafare

    2010-01-01

    Este trabalho objetiva a discussão acerca da possibilidade de se utilizar uma tese ontológica sobre o indivíduo no âmbito do Direito. Em primeiro lugar, é feita uma análise histórica de alguns dos conceitos e termos utilizados corriqueiramente pelo Direito e a presença de incerteza terminológica. No Capítulo 2, discute-se a necessidade de uma tese ontológica de indivíduo e a separação entre raciocínio e racionalidade. O Capítulo 3 é dedicado à análise do arcabouço teórico necessário à compree...

  5. Efeitos do treinamento resistido sobre o perfil lipídico de indivíduos com síndrome metabólica

    OpenAIRE

    Albarello, R.A.; Boufleur Farinha, J.; Reckelberg Azambuja, C.; Lopes dos Santos, D.

    2016-01-01

    Objetivo: Investigar os efeitos do treinamento resistido sobre o perfil lipídico de indivíduos com síndrome metabólica. Método: Dez indivíduos sedentários (52.88 ± 10.9 anos) com síndrome metabólica completaram um protocolo de treinamento resistido, com duração total de 15 semanas e frequência semanal de 3 vezes. Antes e após o treinamento resistido, foram analisados parâmetros antropométricos, como massa corporal, índice de massa corporal, circunferências do abdômen, cintura, quadril, per...

  6. Liberação de potássio em latossolos tratados com resíduos orgânicos

    OpenAIRE

    Oliveira, Waldete Souza Japiassu de

    2014-01-01

    A taxa de liberação de K varia de um resíduo orgânico para outro e se mostra dependente do grau de humificação, da composição química e do teor e das formas de K no material estudado. Este estudo foi realizado com o objetivo de avaliar o potencial e a dinâmica de liberação de potássio de diferentes resíduos e adubos orgânicos incubados em amostras de areia e de latossolos. O experimento foi conduzido no Departamento de Ciência do Solo/UFLA, no Laboratório de Estudo da Matéria Orgânica do Solo...

  7. Estudo do resíduo fosfogesso na formulação de uma pasta para revestimento interno de edifícios

    OpenAIRE

    Oliveira, Jorge Ivan de

    2014-01-01

    O objeto da pesquisa é o fosfogesso, um resíduo da indústria de ácido fosfórico, matéria prima para a produção de fertilizantes fosfatados, detergentes, rações animais, aditivos em alimentos, pesticidas e outros produtos químicos, mais comumente aplicados na agricultura para correção do solo. O fosfogesso resulta da lixiviação ácida da rocha fosfatada com ácido sulfúrico concentrado e água. Como produto dessa reação, tem-se o ácido fosfórico e o resíduo, sulfato de cálcio dihidratado (fosfoge...

  8. A geração de resíduos sólidos no festival gastronômico de Carlos Barbosa : o Festiqueijo

    OpenAIRE

    Néry, Carlos Henrique Cardona

    2008-01-01

    Um evento (festa gastronômica) possui características de um empreendimento turístico que consome água, energia e insumos, gerando resíduos sólidos, emissões gasosas e água residuária. Assim, é importante a identificação das diferentes formas de impactos ambientais decorrentes de festas dessa natureza, no sentido de melhor contemplar a variável ambiental no planejamento das mesmas. O presente estudo se propõe avaliar a geração de resíduos sólidos em um festival gastronômico, que faz parte de u...

  9. Avaliação da retenção de gases em camadas de cobertura de aterros de resíduos sólidos

    OpenAIRE

    Odete Holanda Mariano, Maria

    2008-01-01

    As camadas de cobertura das células dos aterros para RSU funcionam como um isolante entre a massa de resíduos e o ambiente externo. Esta camada também é responsável por evitar a entrada de água na massa de resíduos, bem como, a saída de gases para a atmosfera. Esses fatos por si só, revelam a importância do correto dimensionamento e da adequada execução destes elementos dos aterros. A presente pesquisa aborda o comportamento do solo em relação à retenção dos gases pela camad...

  10. Buruh Perempuan di Negeri Perempuan (Pergeseran Peran Perempuan Minangkabau Studi Kasus Buruh Tani Kubang Nan Duo Kabupaten Solok 2007-2016

    Directory of Open Access Journals (Sweden)

    Mery Kurnia

    2017-06-01

    Full Text Available The sudy aims to  reveal a shifting paradigm of the role of  women in Minangkabau. Generally, the society perceived that the country is dominanted by women in which culture becomes an important and secure shield for women economy. This makes the cases of marginalization of women's rights is irrelevant to be discussed, but the pradigm can be re-evaluated by the emergence of the case. Historical method (heuristic, criticism, interpretation, historiogaraphy was used in this research, where the data taken from the case in Kubang Nan Duo. The finding of the study showed that there was a shifting role of women Kubang Nan Duo massively. From economic rulers, it has been shifted into a production center due to the many treasures have been sold and pawned heirlooms, forcing them plunge into agricultural labor. Wwomen have undermined from two sides, where the eternal patriarchal culture overwhelmed them.

  11. Desenvolvimento de modelo conceitual de telha ecológica a partir de resíduos de PET e gesso da construção

    Directory of Open Access Journals (Sweden)

    S. Teske

    2015-06-01

    Full Text Available Este trabalho apresenta o gesso na construção civil, suas aplicações, características e o desperdício associado. É exposta a legislação brasileira pertinente ao gerenciamento dos resíduos sólidos na construção, e mais especificamente as resoluções CONAMA 307/02 e 431/11, em que o resíduo de gesso passou a ter uma reclassificação quanto a sua destinação. Assim, esse passou a ser considerado um material passível de reutilização e reciclagem. Dessa forma, o objetivo do trabalho foi investigar a viabilidade técnica de aproveitamento de resíduos de gesso como matéria-prima para materiais de construção, no caso, pela incorporação deste em telhas. Assim, é feita uma descrição dos tipos de telhas, suas características e métodos de fabricação, como também a exposição de dois tipos de telhas recicladas. É descrito também o albedo, associado com o benefício de telhados brancos na redução da temperatura dentro das edificações nos dias de maior calor. Foi feita uma lista com as formas e cobrimentos possíveis para a adaptação do gesso na telha, e a partir de características favoráveis às telhas foi escolhido o modelo a ser detalhado, a partir de uma matriz avaliativa. O modelo escolhido foi o Colonial Gigante, com capa polimérica feita de resíduo de PET (politereftaleno de etileno envolvendo o resíduo de gesso. Um modelo 3D foi desenvolvido, e a telha foi nomeada de Telha GePET. Foram definidas em laboratório a umidade e a massa específica aparente e unitária do resíduo de gesso. Diversas características da telha foram descritas, como suas dimensões, massa, fonte de matéria-prima, produção, instalação no telhado, manutenção e durabilidade, o descarte após sua vida útil, o albedo, o isolamento térmico e o valor da telha. Concluiu-se que é possível a fabricação de uma telha com resíduos de gesso, juntamente com o resíduo de PET, tornando-a um produto mais sustentável e 100% reciclável.

  12. Estilo de vida sedentário em indivíduos com hipertensão arterial

    Directory of Open Access Journals (Sweden)

    Larissa Castelo Guedes Martins

    2015-12-01

    Full Text Available RESUMO Objetivo: identificar a prevalência do diagnóstico de enfermagem Estilo de Vida Sedentário (EVS e analisar sua associação com os indicadores clínicos (IC e fatores relacionados (FR em indivíduos com hipertensão arterial (HA. Método: estudo transversal com 285 pacientes com HAS em um centro de referência em atendimento ambulatorial no nordeste do Brasil. Para a coleta de dados, utilizou-se instrumento baseado nas definições operacionais dos IC e FR validados anteriormente. Quatro enfermeiros classificaram EVS como presente ou ausente. Para avaliar a associação entre IC e FR com a presença de EVS aplicou-se o Teste de Qui-quadrado. Calculou-se a razão de prevalência e intervalo de confiança para verificar a magnitude do efeito entre FR e EVS. Resultados: identificou-se EVS em 55,8% da amostra. Cinco IC e seis FR apresentaram associação estatística significante com EVS. Conclusão: o estudo identificou os principais indicadores para inferência de EVS, bem como seus possíveis fatores causais entre pessoas com HAS.

  13. Aproveitamento Energético dos Resíduos Sólidos Urbanos em Aterro Sanitário

    Directory of Open Access Journals (Sweden)

    Geslaine Frimaio da Silva

    2011-04-01

    Full Text Available Em países em desenvolvimento os aterros sanitários se destacam como a técnica de disposição final de resíduos sólidos urbanos por apresentar menor custo e apresentar técnicas de engenharia que visam minimizar os impactos à saúde pública e ambientais. Nesse sentido este estudo realiza a síntese em emergia de um aterro sanitário na cidade de São Paulo, que possui um projeto de compensação ambiental e geração de energia elétrica por meio da queima do biogás. A emergia total do sistema corresponde a 1,22x10 20 sej, as transformidades do RSU e da energia elétrica foram correspondem a 8,36x10 11 sej/J e 4,67x10 3.

  14. A influência do membro superior na marcha de indivíduos com hemiparesia: revisão

    Directory of Open Access Journals (Sweden)

    Lauren Giustti Mazzei

    2016-07-01

    Full Text Available A compreensão da influência do membro superior na marcha de indivíduos hemiparéticos é de extrema importância. Sendo assim, o trabalho objetivou-se no estudo da importância que o membro superior tem na marcha de pacientes após acidente vascular encefálico (AVE. Foi realizada uma revisão bibliográfica na qual buscou-se artigos científicos nas bases de dados, LILACS, BIREME, SciELO e Cochrane. A pesquisa levou em consideração trabalhos publicados no período de 2002 a 2014. De acordo com os artigos encontrados, concluiu-se que a biomecânica da marcha está diretamente relacionada ao membro superior, sendo assim, qualquer disfunção poderá alterar a marcha de pacientes após AVE.

  15. A Study on the Ion Beam Extraction using Duo-PiGatron Ion source for Vertical Type Ion Beam Facility

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Bom Sok; Lee, Chan young; Lee, Jae Sang [KAERI, Daejeon (Korea, Republic of)

    2015-05-15

    In Korea Multipurpose Accelerator Complex (KOMAC), we have started ion beam service in the new beam utilization building since March this year. For various ion beam irradiation services, we are developed implanters such as metal (150keV/1mA), gaseous (200keV/5mA) and high current ion beam facility (20keV/150mA). One of the new one is a vertical type ion beam facility without acceleration tube (60keV/20mA) which is easy to install the sample. After the installation is complete, it is where you are studying the optimal ion beam extraction process. Detailed experimental results will be presented. Vertical Type Ion Beam Facility without acceleration tube of 60keV 20mA class was installed. We successfully extracted 60keV 20mA using Duo- PiGatron Ion source for Vertical Type Ion Beam Facility. Use the BPM and Faraday-cup, is being studied the optimum conditions of ion beam extraction.

  16. CENÁRIO MUNDIAL DOS RESÍDUOS SÓLIDOS E O COMPORTAMENTO CORPORATIVO BRASILEIRO FRENTE À LOGÍSTICA REVERSA

    Directory of Open Access Journals (Sweden)

    Cristina Maria Dacach Fernandez Marchi

    2011-09-01

    Full Text Available O Brasil, em um ranking de 163 paises, está no 62º lugar em desempenho ambiental, segundo o estudo Environmental Performance Index 2010. Este estudo configura-se em dois eixos principais: contribuir para a redução de impactos ambientais na saúde humana, e promover incentivos ao gerenciamento dos recursos naturais. A preservação do meio ambiente ganha contornos mundiais quando se refere à geração de resíduos urbanos. Em 2010, depois de vinte anos de discussão, a Política Nacional de Resíduos Sólidos foi sancionada. Este projeto impõe obrigações aos empresários, ao Poder Público e aos cidadãos no gerenciamento dos resíduos. Este trabalho levanta a problemática do comportamento corporativo brasileiro no enfrentamento de alguns princípios ligados aos Resíduos Sólidos. Existem instrumentos mundiais que podem dar suporte às empresas para enfrentar este desafio? Analisa como ocorre a mediação destas práticas entre setor público, cidadãos e empresas, em algumas regiões do mundo. Divide-se em duas partes: a primeira, teórica, descrevem-se os resultados de uma pesquisa bibliográfica sobre o cenário mundial do lixo urbano; na segunda parte, apresenta-se uma ferramenta utilizada pelo poder público na França, que pode ser replicada no Brasil, contribuindo para minimizar possíveis impactos econômicos e legais que a lei poderá provocar nas organizações brasileiras.

  17. Fitodisponibilidade de metais utilizando ácidos orgânicos após sucessiva aplicação de resíduos no solo

    Directory of Open Access Journals (Sweden)

    Maria A. G. da Silva

    2014-12-01

    Full Text Available Conduziu-se este estudo com o objetivo de avaliar a concentração de metais pesados no solo, provenientes de resíduos orgânicos, bem como a ocorrência de fitotoxicidade de metais em soja. Os metais no solo foram extraídos por ácidos orgânicos, comumente presentes na rizosfera das plantas. A soja foi cultivada sucessivamente, durante oito anos, e recebeu repetidamente, a aplicação dos resíduos de origem urbana, como lodo de esgoto biodigerido (LB e lodo de esgoto centrifugado (LC, e de origem industrial, como escória de aciaria (E e a lama cal (LCal. O experimento foi conduzido em Latossolo Vermelho distrófico (Oxisolo na UNESP, Botucatu, SP, onde recebeu os resíduos nas doses de zero (controle 2, 4, e 8 Mg ha-1, antes da semeadura da soja, de 2002 a 2010, a cada dois anos, totalizando quatro aplicações. Nas profundidades analisadas de 0 a 0,10 m e de 0,10 a 0,20 m, ficou evidente que o resíduo que mais acrescentou metais ao solo e às folhas e grãos da soja, foi o LB, aumentando a concentração de Ni, Cd, Pb e Zn, enquanto que nos tratamentos em que se aplicou a escória (E, o principal metal liberado ao solo foi o Cr. A aplicação da LCal não aumentou a concentração dos metais e a soja apresentou uma concentração de Cr, Ni e Zn acima dos limites máximos permitidos para grãos alimentícios, quando recebeu LB, principalmente na dose de 8,0 Mg ha-1.

  18. Sustentabilidade na indústria da construção: uma logística para reciclagem dos resíduos de pequenas obras

    Directory of Open Access Journals (Sweden)

    Joel Vieira Baptista Junior

    2013-12-01

    Full Text Available Neste trabalho são discutidos os principais aspectos relacionados à geração de resíduos da construção civil, sob ponto de vista de sustentabilidade das edificações. Esse conceito exige, das novas construções, a adoção de projetos criativos e eficientes, com soluções adequadas para as diversas fases de vida da obra, incluindo a previsão do reaproveitamento e descarte de materiais ao fim de sua vida útil. Um dos problemas atuais da gestão de resíduos da construção civil é que a segregação dos materiais por classe, visando à sua posterior reciclagem ou descarte, só acontece na cidade do Rio de Janeiro em grandes obras com canteiros instalados, embora mais da metade da quantidade produzida seja proveniente de pequenas obras com resíduos descartados em caçambas de rua ou simplesmente lançados em vias públicas ou terrenos baldios. É sugerido um plano de gestão circular, especialmente voltado para os pequenos geradores, com obrigatoriedade de segregação dos materiais, instalação de pontos de recolhimento pelos bairros da cidade e implantação de centros de tratamento de resíduos da construção civil, operados por associações de catadores, com objetivo de produção de materiais reciclados. O sucesso da proposta depende da efetiva participação de todos os agentes envolvidos no processo, como o poder público, proprietários, empresas e demais profissionais da indústria da construção civil.

  19. Crescimento de mudas de pupunheira (Bactris gasipaes Kunth utilizando resíduo de mineração de areia como componente de substratos

    Directory of Open Access Journals (Sweden)

    Valéria Augusta Garcia

    2012-09-01

    Full Text Available http://dx.doi.org/10.5902/198050986613O objetivo deste trabalho foi avaliar o crescimento de mudas de pupunheira quando utilizado o resíduo fino de mineração de areia na composição de substratos. O experimento constou de cinco tratamentos, sendo quatro composições de diferentes proporções de resíduo de mineração de areia e casca de arroz carbonizada: 1:0; 3:1; 1:1; 1:3 e um substrato padrão composto por latossolo amarelo podzólico álico e esterco de búfalo curtido, na proporção 3:1. Utilizou-se o delineamento experimental de blocos ao acaso com cinco repetições e 10 mudas por parcela. Repicou-se uma plântula de pupunheira por recipiente (sacos plásticos de polietileno preto de 8 x 20 cm, volume 1,1 L, os quais foram preenchidos com os diferentes substratos. Foram determinadas mensalmente as variáveis diâmetro do coleto, altura da haste, número de folhas e taxa de crescimento relativo e, após 180 dias da repicagem, os valores SPAD (Soil and Plant Analysis Development, dinâmica da assimilação de CO2, da transpiração e da condutividade estomática. O resíduo de mineração de areia puro como substrato não proporcionou mudas de qualidade, visto que esse material apresenta alta densidade e baixa granulometria. Seu uso pode ser indicado como um dos componentes de substratos, pois as plantas que cresceram nas misturas de resíduo e casca de arroz carbonizada apresentaram resultados semelhantes ao do considerado padrão.

  20. Gerenciamento de resíduos em empresas do setor hortifrúti localizadas na região do Cariri – Ceará

    Directory of Open Access Journals (Sweden)

    Leyna Bezerra de Moura

    2014-05-01

    Full Text Available O Brasil está entre os 10 países que mais desperdiçam alimentos no mundo. Aproximadamente 35% da produção agrícola nacional tornam-se lixo, que representa quantitativamente valores acima de 10 milhões de toneladas de alimentos, e caso estes não sejam considerados a alguma finalidade, podem comprometer o meio ambiente.Mediante o grande desperdício de alimentos ocorridos na região do Cariri, dentre eles os de maior destaque são as frutas e hortaliças, com consequente geração de resíduos originários das etapas de produção, distribuição e comercialização. Ressalta-se a importância de conhecimentos acerca da adoção de práticas em respeito ao ambiente, portanto, o presente estudo teve como objetivo analisar o gerenciamento de resíduos provenientes de determinadas empresas do setor hortifrúti da região do Cariri. Diante dos resultados encontrados neste estudo observou-se que todas as empresas geram resíduos e que estão sendo capazes de utilizá-los atribuindo aos mesmos finalidades como alimentação animal e compostagem, o que nos garante que tais empresas, preconizam condutas de gerenciamento de resíduos adequadas, adotando uma postura ética de comprometimento com o social e o meio ambiente.Palavras-chave: desperdício, compostagem, meio ambiente.