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Polcar, Adam, Antonín Skřivánek, and Jiří Čupera. "The Operation of Automobile Engines on Biofuel E85." Journal of Middle European Construction and Design of Cars 10, no. 2 (November 1, 2012): 37–43. http://dx.doi.org/10.2478/v10138-012-0011-y.
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Shrnutí Článek se zabývá monitorováním výstupních parametrů automobilových motorů při provozování na biopalivo E85 s Pro analýzu byla vybrána dvě vozidla a jeden motor. Měření vozidel bylo provedeno pomocí válcového dynamometru na vozidlové zkušebně. Motor byl testován na zkušebně motorů pomocí vířivého dynamometru. Jako referenční palivo byl zvolen benzín Natural 95 (BA95). Vozidla byla pro spalování E85 vybavena dodatečnými přestavbovými sadami. Seřízení motoru proběhlo pomocí programovatelné řídicí jednotky. Všechna měření probíhala při ustálených parametrech. Mezi hodnocené parametry patřila spotřeba motoru, výkon a efektivní účinnost. Výsledky měření poukazují na pozitivní vliv etanolu na spalovací proces u všech hodnocených motorů. Jak je z výsledku dále patrné má majoritní vliv na změnu výstupních parametrů i seřízení motoru resp. vstřikované dávky
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Gottfried, Jaroslav. "České normativní skóry Beckovy škály depresivity: metaanalýza." TESTFÓRUM 7, no. 12 (September 13, 2019): 30–46. http://dx.doi.org/10.5817/tf2019-12-12246.
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Úvodem je představena historie lokální adaptace a standardizace Beckovy škály depresivity spolu se sociodemografickými proměnnými potenciálně ovlivňujícími získané skóry. Jádro studie se skládá z rešerše dosavadních výzkumů předkládajících českou adaptaci metody neklinickým či klinicky depresivním lidem. Získané deskriptivní statistiky byly použity pro metaanalytický odhad populačních parametrů skórů. Výsledky metaanalýzy ukazují vliv formy administrace na výsledný skór, kdy online forma způsobuje průměrné zvýšení skóru o více než tři body. I přes kontrolu formy administrace lze napříč studiemi sledovat výraznou heterogenitu průměrných skórů a směrodatných odchylek, která komplikuje odhad populačních parametrů. Pravděpodobnými příčinami rozdílů je výběrové zkreslení vzorku a kontextové efekty administrace. Kvůli výrazné heterogenitě skórů výzkumných vzorků je do budoucna žádoucí prozkoumat možný vliv těchto zkreslení i u jiných metod. Na základě odhadnutých populačních parametrů a teoretických předpokladů bylo následně simulováno rozložení populačních dat, které bylo použito pro stanovení přibližných cut-off skórů pro diagnostické účely. Na závěr jsou výsledky porovnány s výsledky zahraničních metaanalýz a jsou shrnuta doporučení ohledně používání Beckovy škály depresivity pro budoucí výzkum i pro praktickou diagnostiku. Závěry studie limituje především malé množství studií zahrnutých do metaanalýzy, heterogenita skórů napříč studiemi a nesplněný předpoklad normálního rozložení skórů.
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Vítek, Oldřich, Radek Tichánek, and Petr Hatschbach. "Application of Les, Pans and Rans to a Case of Intake Channel Steady Flow Test Bench." Journal of Middle European Construction and Design of Cars 13, no. 3 (December 1, 2015): 14–23. http://dx.doi.org/10.1515/mecdc-2015-0011.
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Shrnutí Članek se zabyva vyhodnocenim průtokovych vlastnosti (průtokovy součinitel, součinitel přične a tečne rotace) saciho kanalu užitim jak 3-D CFD simulace, tak měřeni. Byla provedena citlivostni studie různych parametrů simulace. Nejdůležitějši jsou vlastnosti sitě a použite modely turbulence (uvažovane modely: LES, PANS a RANS). Co se tyka sitě, tak kritickym parametrem je konfigurace v těsne blizkosti stěny - tloušťka a počet vrstev těsně u stěny maji velky vliv na průtok, avšak součinitele přične a tečne rotace na tom teměř nezavisi. Odtud plyne, že tyto parametry sitě lze považovat za ladici parametry CFD modelu. Co se tyka velikosti oka sitě, 2 velikosti byly testovany (0.6 a 0.3 mm). Ukazalo se, že ani jedna z těchto siti neni dostatečně jemna pro korektni aplikaci LES. A tedy PANS funguje spiše jako RANS. Z hlediska modelů turbulence je PANS jevi jako nejlepši možnost, protože kombinuje vyhody jak LES, tak RANS. Obecně je možne konstatovat, že lze dosahnout relativně dobre shody na průtoku, ale součinitele přične a tečne rotace jsou problematicke, neboť byla dosažena pouze kvalitativni shoda.
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Dolan, Igor, Taťána Šrámková, and Petr Filipenský. "Influence the extent of spinal cord lesions and selected parameters on the quality of sexual life of patients after spinal trauma." Urologie pro praxi 17, no. 3 (August 1, 2016): 133–38. http://dx.doi.org/10.36290/uro.2016.035.
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Demic, Miroslav, and Giovanni Belingardi. "A contribution to shock absorber modelling and analysis of their influence on vehicle ride characteristics." Journal of Middle European Construction and Design of Cars 9, no. 1 (November 1, 2011): 6–17. http://dx.doi.org/10.2478/v10138-011-0002-4.
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SHRNUTI Tlumiče jsou zakladni časti zavěšeni vozidel. Zavěšeni kola zajišťuje spravne chovani vozidla a pohodli řidiče. Pro optimalni využiti adheze při pohonu i brzděni je nutne, aby sily mezi pneumatikou a vozovkou byly pokud možno ustalene. Žadne z kol by nemělo ztratit kontakt s vozovkou. Pohodli znamena, že vibrace od profilu vozovky se budou jen minimalně přenašet do kabiny na cestujici. Při navrhu noveho vozidla, je velke usili věnovano spravnemu naladěni podvozku - volbě vhodnych parametrů tuhosti a tlumeni. Članek představuje některe vysledky z experimentalnich zkoušek provaděnych na třech tlumičich od vyrobce Magneti -Marelli, ktere jsou v současne době ve vyrobnim programu. Experimenty byly provaděny při nahodnem buzeni. V zavislosti na charakteristikach, ktere zobrazuji sily v zavislosti na kinematickych veličinach (posun, rychlost, zrychleni) byl pomoci metody “black box” vyvinut matematicky model odezvy tlumiče. Vliv tlumiče na vlastnosti vozidla jsou analyzovany pomoci sledovani odezvy vozidla na polyharmonicke buzeni.
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Sigmund, Martin, Rudolf Rozsypal, Jiří Kratochvíl, and Iva Dostálová. "Influence of five-month preparatory period on changes of morphological and performance parameters in the Czech junior representatives in whitewater slalom." Tělesná kultura 37, no. 1 (January 1, 2014): 69–91. http://dx.doi.org/10.5507/tk.2014.004.
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Jursová, Jitka, Petr Urbánek, and Markéta Váchová. "Odlišné sociální klima učitelských sborů ZŠ v rozmanitých podmínkách práce školy." Pedagogická orientace 29, no. 2 (June 30, 2019): 172–202. http://dx.doi.org/10.5817/pedor2019-2-172.
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Cílem empirické studie je v kontextu zjištěných parametrů sociálního kli-matu identifikovat a popsat shody a rozdíly mezi vybranými učitelskými sbory ZŠ v jejich charakteristikách a fungování. Jde tedy o hledání příčin zjištěných hodnot kli-matu učitelského sboru v konfrontaci evidentních znaků učitelského sboru se znaky, jejichž vliv je méně zjevný, skrytý. Výzkumný postup směřuje od kvantitativního vý-zkumu, z něhož byla využita získaná data jako východiska, k procedurám kvalitativní-ho výzkumu. Z typologického výběru vzešly dvě dvojice učitelských sborů základních škol. První dvojice s krajně odlišnými (příznivými a nepříznivými) a druhá s obdob-nými (příznivými) hodnotami sociálního klimatu. Analýze byly podrobeny způsoby sdílení vize a fungování školy, styl vedení a jeho geneze, mezilidské vztahy a komuni-kace, angažovanost učitelů a její podpora. Na příkladu vybraných učitelských sborů se ukazuje, že i přes srovnatelné hodnoty jejich sociálního klimatu se školy mohou lišit v organizaci a vytváření podmínek práce. Jako nápadné se ukázaly zejména roz-díly v pedagogickém vedení, a to i u dvojice podobných škol. Klíčovým atributem pro optimální fungování vedení se ukazuje být soulad stylu vedení se specifiky každého jednotlivého učitelského sboru. Za zásadní pro kvalitu sociálního klimatu sboru lze považovat vytvářenou shodu na hlavních principech chodu školy, sdílení jasné vize rozvoje, podporující styl vedení a cílevědomě vytvářený prostor pro práci učitele. Způsoby, jak dosáhnout optimálního sociálního klimatu sboru, se mohou lišit a vy-tvářejí ve specifických podmínkách života každé školy zcela originální a komplikova-ný organismus.
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JELÍNEK, Lukáš, Anton KARACHEVTSEV, Marcel KARABÍN, Blanka KOTLÍKOVÁ, and Pavel DOSTÁLEK. "The effect of acidic steeping on malt technological parameters." Kvasny Prumysl 59, no. 10-11 (October 1, 2013): 288–91. http://dx.doi.org/10.18832/kp2013029.
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Požárek, Petr, and Jiří Suchý. "Vliv funkčního australského tréninku na aerobní parametry hráčů ledního hokeje." Studia sportiva 7, no. 2 (December 2, 2013): 31–37. http://dx.doi.org/10.5817/sts2013-2-4.
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The aim of the case study is to analyse the effects of a 10-week fitness Function Australian Training (FAT) off- ice. The research was conducted with 23 professional ice hockey players (n = 23], members of the ice hockey league club HC Mountfield České Budějovice. The FAT method strives to complement existing training methods of selected current knowledge and approaches to ice hockey fitness training. The authors express a positive opinion on this method and describe its advantages especially in relation to reducing muscle imbalances and effect on muscle strength, dynamics and persistence of participating probands. The FAT was primarily focused on explosive strength and power endurance of main body segments with additional exercises to stimulate anaerobic and aerobic performance. The probands underwent a spiroergometric testing on the Quasar running ergometer, followed by measurement of body composition using BIA 2000 and another testing on the bioimpedance device Tanita in order to verify the contribution of FAT. The input and output testing proceeded under laboratory constant conditions on the premises of the UK FTVS in Prague. The quasi experiment lasted for ten weeks. The obtained results confirmed the effectiveness of this training programme by increasing aerobic performance, which has proven the average value of VO2max 55,89 ml.kg.min-1at the input testing. The output testing has showed the averagevalue of VO2max 58,67 ml.kg.min-1.
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Škarohlíd, Marcel. "The positive influence of CO2 in fuel on engine parameters." Journal of Middle European Construction and Design of Cars 9, no. 1 (November 1, 2011): 26–31. http://dx.doi.org/10.2478/v10138-011-0004-2.
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SHRNUTI Odstraněni CO2 jako nežadouci přiměsi z plynnych paliv je současny trend. Na rozdil od tohoto trendu prezentovany članek popisuje přinosy přitomnosti CO2 v plynnem palivu na zakladni parametry motoru jako je středni indikovany tlak, indikovana učinnost, teplota vyfukovych plynů a produkce oxidů dusiku. Vliv oxidu uhličiteho v palivu na parametry motoru je teoreticky ověřen, extrapolovan a zobecněn. Članek detailně analyzuje vztah mezi součinitelem přebytku vzduchu, předstihem zažehu a hmotnostnim podilem CO2 v palivu.
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Coufalová, Klára, Ivana Kinkorová, Lucia Malá, and Jan Heller. "Předsoutěžní redukce tělesné hmotnosti a její vliv na tělesné složení." Studia sportiva 7, no. 1 (July 1, 2013): 121–26. http://dx.doi.org/10.5817/sts2013-1-13.
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The aim of our study was to monitor changes in individual components of body composition due to reduction in body weight in judo. This precontest weight reduction is very common in combat sports and it can have negative impact not only on performance but also on health. Research group consisted of 11 judoists at the age of 17-27 years belonging to the representation of the Czech Republic. The measurement of body composition had two parts; the first was before body weight reduction and the second part at the end of body weight reduction. For the measurement of body composition we used multifrequency bioimpedance analyzer BIA 2000 - M. The results of our study show that rapid intensive weight reduction is reflected in varying degrees in all parameters of body composition. We noticed a reduction of body weight by an average of 4.7% (approximately 3.8 kg), the weight loss ranged from 1.6 kg to 8.1 kg. The greatest changes in the parameters of body composition were detected in the extracellular water (ECW), there was a decrease of this parameter on average by 13.8 %, while total body water (TBW) decreased by 6.0 %. There was also a reduction in the amount of body fat by 13.2 %, the amount of extracellular mass (ECM) decreased by 9.8 %, the ratio of ECM/BCM by 8.9 % and the amount of fat-free mass (FFM) decreased by 4.0 %. Only in intracellular water (ICW), we noticed a slight increase by 1.4 %, which may be due to the redistribution of body fluids. Changes of particular parameters of body composition were statistically and substantively significant.
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Endoh, Akira, and Isao Okada. "Self-Exchange Velocities in Molten (Li, Na, K)CI of the Eutectic Composition Reflecting the Chemia Effect for the internal [Mobilities." Zeitschrift für Naturforschung A 44, no. 11 (November 1, 1989): 1131–36. http://dx.doi.org/10.1515/zna-1989-1117.
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Molecular dynamics (MD) simulation has been performed on molten (Li, Na, K)Cl of nearly the eutectic composition at 773 K, 873 K and 973 K. The employed pair potential parameters are based on the Tosi-Fumi ones except the softness parameter, which is somewhat modified. The self-exchange velocities (SEV’s) of Li+ , Na+ and K+ with reference to CP have been calculated. The sequence of the internal mobilities of these cations is well reproduced by the corresponding SEV’s, v; that is VLi < Vk < VNa at 773 K, VLi < VNa ≅ VK at 873 K and VLi < VNa < VK at 973 K
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Došla, Jan, and Jan Meško. "Silové schopnosti a jejich vliv na sportovní výkon v lezení." Studia sportiva 9, no. 1 (July 13, 2015): 45–53. http://dx.doi.org/10.5817/sts2015-1-6.
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The article discusses the impact of strength abilities on performance in climbing. Strength abilities were measured using two motor tests. It was a test of dynamometry and pull-up hang test. Furthermore, anthropometric variables, which include height, weight and body fat percentage, have been measured. During the research a total of 46 persons have been measured; these were divided into three groups – performance climbers, recreational climbers and non-climbers. Only men have been included in the test. The groups have been compared to each other with statistically significant differences being found in parameters “pull-up hang” and “body fat percentage”. No statistically significant differences between other parameters have been found.
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Daďová, K., and E. Beranová. "The impact of a 3-month exercise program of remedial physical education on selected parameters of the Senior Fitness Test." Studia Kinanthropologica 17, no. 3 (September 30, 2016): 241–47. http://dx.doi.org/10.32725/sk.2016.076.
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Tichánek, Radek. "Dasy Based Tool for The Design of Ice Mechanisms." Journal of Middle European Construction and Design of Cars 13, no. 3 (December 1, 2015): 33–40. http://dx.doi.org/10.1515/mecdc-2015-0013.
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Shrnutí Článek prezentuje nastroj pro navrhovani novych mechanismů spalovaciho motoru založeny na znalostni databazi DASY. Z mechanismů motoru byl vybran rozvodovy mechanismus OHC na kterem byl nastroj vyvinut a testovan. Nastroj obsahuje kinematicky a dynamicky model rozvodu napojeny na klikovy mechanismus. Podrobnou kalibraci a naslednou validaci třech dynamickych modelů s měřenymi daty, byly ziskany hodnoty neznamych parametrů modelů, ktere jsou zaznamenany v DASY a mnohe parametry jsou přimo použitelne pro navrh noveho mechanismu i při změně geometrie některych časti. V članku jsou prezentovany tři postupy použite nejen pro kalibraci, ale take pro identifikaci vlivu neznamych parametrů na průběh zrychleni ventilu a jeho kmitani. Nastroj byl použit pro navrhy obrysů vaček pro prototyp realneho mechanismu.
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Havlíčková, Radka. "Vliv atraktivity kontextu matematické slovní úlohy na řešitelský proces." Scientia in educatione 11, no. 1 (June 30, 2020): 2–21. http://dx.doi.org/10.14712/18047106.1715.
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Výzkumy zabývající se řešením matematických slovních úloh poukazují na to, že rozdíly v úspěšnosti nejsou dány pouze rozdílnou úrovní kognitivních schopností žáků, ale že svou roli sehrává také motivace. V této studii jsme se proto zaměřili na kontext, jakožto nematematickou složku slovní úlohy, a zjišťovali jeho vliv na úspěšnost žáků při jejím řešení. Sledovaným aspektem kontextu byla jeho potenciální atraktivita – zjišťovali jsme, zda žáci budou úspěšnější v řešení slovních úloh s prvky pohádky, science fiction a humoru než v úlohách se stejnou strukturou, ale s neutrálním kontextem. Žáky 5. a 6. ročníku základní školy (n5 = 623, n6 = 291) jsme rozdělili do dvou výkonově srovnatelných skupin a každé z nich předložili jednu z variant – atraktivní nebo neutrální. Pro vyhodnocení výsledků kvantitativního šetření jsme použili Item Response Theory, která nám umožnila sledovat obtížnost úlohy v závislosti na latentní schopnosti jednotlivých žáků a poskytla informaci o diskriminačních vlastnostech úloh. Kromě úspěšnosti jsme v rámci kvalitativního šetření zjišťovali také rozdíly v oblasti řešitelských strategií a chyb. Ukázalo se, že atraktivní kontexty mohouza určitých podmínek vést ke zvýšení snahy žáků o jejich vyřešení a v některých případech i k mírnému zvýšení úspěšnosti řešení. Studie také ukázala, že při variování kontextů úloh je obtížné zachovat ostatní parametry úlohy beze změn, které by se odrážely v náročnosti situačního modelu úlohy, a upozornila na určitou nekonzistenci výsledků některých výzkumů.
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Macák, J., P. Sajdl, A. Krausová, V. Bystrianský, L. Tůma, M. Zychová, and L. Lapčák. "Elektrochemické a spektroskopické studium oxidù na žáropevných ocelích exponovaných v superkritické vodì/ The electrochemical and spectroscopic study of oxides on creep resistant steels exposed to supercritical water." Koroze a ochrana materialu 58, no. 4 (December 1, 2014): 100–106. http://dx.doi.org/10.1515/kom-2015-0002.
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Použití superkritické vody v energetice je motivováno zvýšením tepelné účinnosti energetického cyklu. Důsledkem vyšší účinnosti je snížení specifi ckých emisí CO2. Superkritické energetické cykly byly proto zařazeny mezi čisté uhelné technologie (CCT - Clean Coal Technology). Vzhledem ke korozní agresivitě superkritické vody je základním požadavkem volba správného konstrukčního materiálu. Všechny typy ocelí, testovaných v této studii, byly použity při konstrukci komponent superkritického energetického bloku. Ke studiu byly vybrány celkem čtyři typy žáropevných ocelí, z toho dva typy austenitických ocelí a dva typy feriticko-martenzitických ocelí. Vzorky těchto ocelí byly exponovány za superkritických podmínek (580 °C, 25 MPa) v experimentální smyčce po dobu 12 až 50 hodin. Zároveň byl zkoumán vliv počáteční fáze expozic - tedy vliv ohřevu z okolní teploty na provozní parametry. Chemické složení a přenosové vlastnosti oxidických vrstev, tvořících se během interakce se superkritickou vodou (SCW), byly studovány ex-situ pomocí elektrochemických metod a povrchových analýz (XPS a Ramanova spektroskopie). Elektrochemické testy zahrnovaly Mott-Schottkyho analýzu založenou na měření impedance v závislosti na elektrodovém potenciálu. Tvar Mott-Schottkyho závislostí sloužil ke kvantitativní charakterizaci polovodivého chování oxidů. Oxidy na všech typech ocelí vykazovaly polovodivé chování jak typu N, tak typu P. Vlastnosti oxidů, zejména hustota poruch a chemické složení, závisí významně na způsobu najetí krátkodobé superkritické expozice.
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Černá, Sylvie, Lucia Malá, Tomáš Malý, Miroslav Čada, and Jiří Nykodým. "Vliv zatížení na stabilitu stoje u juniorské reprezentace moderního pětiboje." Studia sportiva 5, no. 2 (December 19, 2011): 37–42. http://dx.doi.org/10.5817/sts2011-2-5.
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The article evaluates influence of physical exertion on selected postural stability parameters of junior modern pentathletes (7 male athletes, 5 female athletes). Both medallists from juniors world or European championship. We have measured before and after exertion on stabilomethric desk Footscan. We have simulated racing conditions. Conclusions from the experiment are: we are not able to confirm influence of exertion on wide stand (from statistical point of view – on confidence level α = 0,05). We predicate the result is influenced by delay between exertion and measurement.
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Novotna, P., M. Houska, V. Sopr, H. Valentova, and P. Stern. "Vliv smykové viskozity a elasticity na senzorickou viskozitu modelových kapalných potravin." Czech Journal of Food Sciences 17, No. 1 (January 1, 1999): 23–30. http://dx.doi.org/10.17221/10016-cjfs.
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The shear flow rheological properties of sugar solutions (70% w/w concentration) modified by different cellulose derivatives have been measured. Thickeners were expected to cause the viscoelastic behaviour of the resulting sol ution. Therefore, the elastic rheological parameters were measured by oscillatory shear technique (phase angle, elastic modulus) and also the first normal stress difference N<sub>1</sub>. The increase of thickener concen tration caused a moderate increase of non-Newtonian behaviour in the shear flow. The sensory viscosity (ra nged between 0 and 100%) was evaluated by five different methods - as an effort for stirring with teaspoon, time for flowing down the spoon, slurping from spoon, compression between tongue and palate and swallowing. The influence of shear viscosity and first normal difference on sensory viscosity was tested. Correlation procedu re between change of sensory viscosity .tlSE and change of shear viscosity .tlJ.Iz showed that only for swallowing there is a statistically evident dependence. The correlation between change of sensory viscosity t.SE and first normal stress difference N<sub>1</sub> is not statistically evident. For all the methods of sensory evaluation the dependence between these parameters is only weak and indirect (with increasing normal stress difference the sensory viscosity is decreasing).
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Bahenský, Petr, and Jiří Suchý. "Vliv sedmidenního tréninkového kempu ve vyšší nadmořské výšce na vybrané funkční a biochemické parametry mladých běžců." Studia sportiva 9, no. 1 (July 13, 2015): 63–72. http://dx.doi.org/10.5817/sts2015-1-8.
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The objective of the present thesis is to examine the effect of the seven-day training camp in the altitude of 1,880 meters above sea level on functional and biochemical changes of the organism of young sportspersons. The thesis is a pilot study. The research was conducted on n = 6 (including 2 girls), age = 17,33 ± 2,36, all of them belonging to the youth sports elite within the Czech Republic. We have observed the dynamics of changes of morning resting heart rate, selected parameters of blood count (amount of erythrocytes, haemoglobin and haematocrites) and level of the anaerobic threshold. The measurements were performed 2 days prior departure, 2 days after return and 10 days after return from the higher above-sea-level altitude. The morning resting heart rate was measured by the probands during the course of 17 days before the camp and during the course of 14 days after returning from the camp. In the scope of the research, we have arrived at the following results: the resting heart rate as measured before departure was reduced by 2.44% 10 days after returning from the camp (it increased by 7.32% during the stay in the camp), the amount of erythrocytes increased by 1.2%, that of haemoglobin increased by 1.5% and that of haematocrites increased by 1.6%, level of the anaerobic threshold was improved by 11 seconds (by 4.6%). Most probably, the weekly stay is too short; the effect of a shortened camp is not parallel to a training that lasts 21–28 days; however, the above change of level of the anaerobic threshold is statistically and substantively significant. Changes in blood values are not statistically significant, substantive significance shows a small to moderate effect.
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Nielsen, Ole K., David Chikoye, and Jens C. Streibig. "Efficacy and Costs of Handheld Sprayers in the Subhumid Savanna for Cogongrass Control." Weed Technology 19, no. 3 (September 2005): 568–74. http://dx.doi.org/10.1614/wt-03-267r2.1.
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Cogongrass continues to be one of the most invasive weeds in the subhumid savanna. Herbicide application expenses depend on equipment costs, costs of water transport for spraying, and chemical costs. In three on-farm experiments on land heavily infested with cogongrass, the effectiveness of a knapsack sprayer (KS), a very low volume sprayer (VLV), and a rope wick (RW) applicator was tested at Ijaye, Nigeria, from 2000 to 2001. The sprayers differed in application method, price, and carrier volume required. The dose–response curves for the three applicators were identical in all parameters except at very high doses for the RW. Consequently, there were no apparent differences in glyphosate effectiveness, even when it was applied with different equipment and different carrier volumes. However, even at very high doses, the RW was not as efficient as was the KS and VLV. Actual biomass reduction of cogongrass was greater with the KS and VLV. Even though the KS and VLV generally gave better control levels than the RW, the latter is more user-friendly because it does not require protective masks, which are often unavailable in sub-Saharan Africa. In a situation with labor scarcity, weeding with the RW was cheaper than hand weeding with hoes. The VLV was more economical when used on areas larger than 10 ha than was the RW. The KS was more economical than all other methods when used on areas larger than 2 ha.
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Delhaas, T., T. Arts, P. H. Bovendeerd, F. W. Prinzen, and R. S. Reneman. "Subepicardial fiber strain and stress as related to left ventricular pressure and volume." American Journal of Physiology-Heart and Circulatory Physiology 264, no. 5 (May 1, 1993): H1548—H1559. http://dx.doi.org/10.1152/ajpheart.1993.264.5.h1548.
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In a mathematical model of the mechanics of the left ventricle (LV) by Arts et al. (1), assuming uniformity of fiber stress (sigma f) and fiber strain (delta epsilon f) in the wall during the ejection phase, fiber stress and fiber strain were related to LV cavity pressure (Plv), LV cavity volume (Vlv) and wall volume (Vw) by the following pair of equations: sigma f = Plv (1 + 3 Vlv/Vw) and delta epsilon f = 1/3 delta ln (1 + 3 Vlv/Vw). The ratio of Vlv to Vw appeared to be the most important geometric parameter, whereas the actual LV shape was of minor importance. The relationships on fiber strain and stress were evaluated experimentally in six anesthetized open-chest dogs during normal and elevated (volume loading) end-diastolic LV pressure. Subepicardial fiber strain was measured simultaneously in 16 adjacent regions of the LV anterior wall, using optical markers that were attached to the epicardial surface and recorded on video. Changes in Vlv were measured by use of four inductive coils sutured to the LV in a tetrahedric configuration. Vw was measured postmortem. During control as well as hypervolemia the following results were found. At the anterior free wall of the LV, the slope of the estimated linear relationship between measured and calculated fiber strain was 1.017 +/- 0.168 (means +/- SD), which is not significantly different from unity. Calculated fiber stress corresponded qualitatively and quantitatively with experimental results reported on isolated cardiac muscle. Calculated subepicardial contractile work per unit of tissue volume was not significantly different from global pump work as normalized to Vw. These findings support the assumption of homogeneity of muscle fiber strain and stress in the left ventricular wall during the ejection phase. Furthermore, average values of fiber stress and strain can be estimated on the basis of measured left ventricular pressure and volume.
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de Campeneere, S., A. van Herck, L. O. Fiems, J. L. de Boever, K. Chiers, R. Ducatelle, and D. L. de Brabander. "Effect of dietary structure on animal performance and lesions in the ruminal wall and feet of Belgian Blue double-muscled bulls." Animal Science 80, no. 2 (April 2005): 185–92. http://dx.doi.org/10.1079/asc41090185.
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AbstractThe influence of the physical structure level in the diet on animal performance was investigated in 52 Belgian Blue doublemuscled bulls starting from a live weight of 348 kg until slaughter at about 645 kg. Four diets with different concentrate/maize silage ratios were offered ad libitum. The structural value (SV), developed in Belgium as a measure of physical structure in the diet for dairy cows, amounted to respectively 0.63 (HSV; high SV), 0.54 (MSV; moderate SV), 0.43 (LSV; low SV) and 0.34 (VLSV; very low SV) per kg dry matter.Growth rate, food intake and food conversion were all linearly affected by the decreasing SV of the diet. Among carcass parameters only the SEUROP conformation score showed a significant effect of the SV, with the MSV group having the highest score and VLSV the lowest. No important influence of the SV on the histological damage of the ruminal papillae or on the foot lesions was found.Based on the lower growth rate and food intake of the LSV group versus the HSV group, a SV of the diet between 0.54 and 0.43 is considered as an absolute minimum for Belgian Blue double-muscled bulls.
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Stadler, Adam Witold, Andrzej Kolek, Zbigniew Zawiślak, and Andrzej Dziedzic. "Noise Measurements Of Resistors With The Use Of Dual-Phase Virtual Lock-In Technique." Metrology and Measurement Systems 22, no. 4 (December 1, 2015): 503–12. http://dx.doi.org/10.1515/mms-2015-0051.
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Abstract Measurement of low-frequency noise properties of modern electronic components is a very demanding challenge due to the low magnitude of a noise signal and the limit of a dissipated power. In such a case, an ac technique with a lock-in amplifier or the use of a low-noise transformer as the first stage in the signal path are common approaches. A software dual-phase virtual lock-in (VLI) technique has been developed and tested in low-frequency noise studies of electronic components. VLI means that phase-sensitive detection is processed by a software layer rather than by an expensive hardware lock-in amplifier. The VLI method has been tested in exploration of noise in polymer thick-film resistors. Analysis of the obtained noise spectra of voltage fluctuations confirmed that the 1/f noise caused by resistance fluctuations is the dominant one. The calculated value of the parameter describing the noise intensity of a resistive material, C = 1·10−21 m3, is consistent with that obtained with the use of a dc method. On the other hand, it has been observed that the spectra of (excitation independent) resistance noise contain a 1/f component whose intensity depends on the excitation frequency. The phenomenon has been explained by means of noise suppression by impedances of the measurement circuit, giving an excellent agreement with the experimental data.
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Schneider, M., H. Blume, and T. G. Noll. "Power estimation on functional level for programmable processors." Advances in Radio Science 2 (May 27, 2005): 215–19. http://dx.doi.org/10.5194/ars-2-215-2004.
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Abstract. In diesem Beitrag werden verschiedene Ansätze zur Verlustleistungsschätzung von programmierbaren Prozessoren vorgestellt und bezüglich ihrer Übertragbarkeit auf moderne Prozessor-Architekturen wie beispielsweise Very Long Instruction Word (VLIW)-Architekturen bewertet. Besonderes Augenmerk liegt hierbei auf dem Konzept der sogenannten Functional-Level Power Analysis (FLPA). Dieser Ansatz basiert auf der Einteilung der Prozessor-Architektur in funktionale Blöcke wie beispielsweise Processing-Unit, Clock-Netzwerk, interner Speicher und andere. Die Verlustleistungsaufnahme dieser Bl¨ocke wird parameterabhängig durch arithmetische Modellfunktionen beschrieben. Durch automatisierte Analyse von Assemblercodes des zu schätzenden Systems mittels eines Parsers können die Eingangsparameter wie beispielsweise der erzielte Parallelitätsgrad oder die Art des Speicherzugriffs gewonnen werden. Dieser Ansatz wird am Beispiel zweier moderner digitaler Signalprozessoren durch eine Vielzahl von Basis-Algorithmen der digitalen Signalverarbeitung evaluiert. Die ermittelten Schätzwerte für die einzelnen Algorithmen werden dabei mit physikalisch gemessenen Werten verglichen. Es ergibt sich ein sehr kleiner maximaler Schätzfehler von 3%. In this contribution different approaches for power estimation for programmable processors are presented and evaluated concerning their capability to be applied to modern digital signal processor architectures like e.g. Very Long InstructionWord (VLIW) -architectures. Special emphasis will be laid on the concept of so-called Functional-Level Power Analysis (FLPA). This approach is based on the separation of the processor architecture into functional blocks like e.g. processing unit, clock network, internal memory and others. The power consumption of these blocks is described by parameter dependent arithmetic model functions. By application of a parser based automized analysis of assembler codes of the systems to be estimated the input parameters of the Correspondence to: H. Blume (blume@eecs.rwth-aachen.de) arithmetic functions like e.g. the achieved degree of parallelism or the kind and number of memory accesses can be computed. This approach is exemplarily demonstrated and evaluated applying two modern digital signal processors and a variety of basic algorithms of digital signal processing. The resulting estimation values for the inspected algorithms are compared to physically measured values. A resulting maximum estimation error of 3% is achieved.
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Kinclová, Lucie, Ondřej Kaller, and Pavel Korvas. "Zhodnocení vlivu rehabilitace dětské ploché nohy pomocí 3D profilometrické skenovací metody." Studia sportiva 9, no. 1 (July 13, 2015): 19–24. http://dx.doi.org/10.5817/sts2015-1-2.
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Flatfoot diagnosis in childhood belongs to the most frequent diagnosis in the orthopedic and physiotherapist clinics. The aim of this research is to evaluate the influence of rehabilitation on the flatfoot diagnosis in childhood using a new 3D profilometry scanning method. The research group consisted of 8 participants with the flat foot diagnosis (3 girls and 5 bois), aged 6.6 ± 1.5 years. Each leg was scanned in sitting position and standing on one leg. There were measured parameters: the arch height without loading and in loading and longitudinal arch angle. This measurement was performed before and after rehabilitation intervention. Statistical analysis of data showed statistically significant changes after the intervention (p < .05). This is the first study, which describes the possibility of using 3D scanning method for diagnosis and for evaluation of therapy effect in flatfoot diagnosis in childhood.
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Krausová, A., J. Macák, P. Sajdl, and O. Vénos. "Koroze slitin zirkonia v prostøedí vyšších koncentrací lithia/ Corrosion of zirconium alloys in the environments with elevated concentration of lithium." Koroze a ochrana materialu 58, no. 4 (December 1, 2014): 95–99. http://dx.doi.org/10.1515/kom-2015-0001.
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Série dlouhodobých in-situ experimentů byla zaměřena na studium negativního vlivu lithných iontů na dva typy slitiny zirkonia s niobem Zr1Nb. Chování slitin bylo sledováno pomocí in-situ aplikovaných elektrochemických metod v experimentální vysokotlaké - vysokoteplotní smyčce (280 °C, 8 MPa), umožňující cirkulaci média. Experimenty byly prováděny jak v prostředí, které simuluje běžné složení chladiva reaktoru typu VVER, tak v prostředí o vyšších koncentracích lithia (70 a 200 mg l-1 Li+ ve formě LiOH). V obou typech expozičního prostředí bylo cílem sledovat přenosové parametry oxidické vrstvy, změny v korozní rychlosti, difúzních parametrech a polovodivém charakteru oxidu. Z výsledků vyplynulo, že v prostředí vyšších koncentrací lithia dochází v době expozice 200 hodin ke zvyšování korozní rychlosti. Lithné ionty taktéž významně ovlivňují hustotu dopantů tedy polovodivé chování oxidické vrstvy zirkonia.
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Keshavarz, Mohammad, and Mehdi Keshavarz. "Optimization of Fuel Consumption of a SI Engine Using Variable Valve Timing and Variable Length Intake Manifold Techniques." Mapta Journal of Mechanical and Industrial Engineering (MJMIE) 2, no. 2 (August 20, 2018): 1–12. http://dx.doi.org/10.33544/mjmie.v2i2.58.
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According to the world crisis about fuel consumption and environmental concerns regarding toxic emissions of internal combustion engines, the engines with higher efficiency and lower fuel consumption have been a topic of research in last decades. In this study, variable valve timing (VVT) and variable length intake manifold (VLIM) techniques are used to optimize the fuel consumption of an SI engine. At first, all components of engine are modeled in GT-POWER and a comparison with experimental results is performed to confirm the accuracy of the model. Then, the discrete-gird algorithm is employed to optimize the parameters in GT-POWER. The results obtained indicate that optimal valve timing and intake manifold length significantly reduces brake specific fuel consumption (BSFC).
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MELIŠOVÁ, Lucie, Ludmila HOLKOVÁ, and Marta BRADÁČOVÁ. "The effect of plant defense response to drought on selected yield parameters in barley." Kvasny Prumysl 57, no. 7-8 (July 1, 2011): 190–95. http://dx.doi.org/10.18832/kp2011017.
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Lefflerová, Kateřina, Petr Lupínek, Jan Bytešník, Robert Čihák, Renata Krausová, Vlastimil Vančura, and Josef Kautzner. "Assessing the effect of right ventricular septal or apical pacing on echocardiographic parameters of dyssynchrony in patients with preserved left ventricular function - mid-term follow-up." Cor et Vasa 50, no. 4 (April 1, 2008): 149–54. http://dx.doi.org/10.33678/cor.2008.053.
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Srinivasan, V. Prasanna, and A. P. Shanthi. "A BBN-Based Framework for Design Space Pruning of Application Specific Instruction Processors." Journal of Circuits, Systems and Computers 25, no. 04 (February 2, 2016): 1650028. http://dx.doi.org/10.1142/s0218126616500286.
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During the synthesis phase of the embedded system design process, the designer has to take early decisions for selecting the optimal system components such as processors, memories, communication interfaces, etc. from the available huge design alternatives. In order to obtain the optimal design configurations from the available huge design alternatives, an efficient design space pruning technique that will ease the design space exploration (DSE) process is required. The knowledge about the target architectural parameters affecting the overall objectives of the system should be considered during the design, so that the search process for finding the optimal system configurations will be rapid and more efficient. The Bayesian belief network (BBN)-based modeling framework for design space pruning proposed in this paper attempts to resolve the existing limitation in imparting domain knowledge and provides a pioneering effort to support the designer during the process of application specific system design. The Xtensa customizable processor architecture from Tensilica and a very long instruction word (VLIW) processor architecture are considered as example target platforms to impart the domain knowledge for the proposed model. Case studies in support of the proposed model are presented in order to understand how BBN can be used for design space pruning by propagating the evidence and arriving at probabilistic inferences to ease the decision-making process. The results show that the design space reduces drastically from a few million design options available to just less than one hundred for Xtensa architecture and from a few billions of design options available to just few thousands for VLIW architecture. The work also validates the pruned design points for their optimality.
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Segers, Patrick, Dimitrios Georgakopoulos, Marina Afanasyeva, Hunter C. Champion, Daniel P. Judge, Huntly D. Millar, Pascal Verdonck, David A. Kass, Nikos Stergiopulos, and Nico Westerhof. "Conductance catheter-based assessment of arterial input impedance, arterial function, and ventricular-vascular interaction in mice." American Journal of Physiology-Heart and Circulatory Physiology 288, no. 3 (March 2005): H1157—H1164. http://dx.doi.org/10.1152/ajpheart.00414.2004.
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Global assessment of both cardiac and arterial function is important for a meaningful interpretation of pathophysiological changes in animal models of cardiovascular disease. We simultaneously acquired left ventricular (LV) and aortic pressure and LV volume (VLV) in 17 open-chest anesthetized mice (26.7 ± 3.2g) during steady-state (BL) and caval vein occlusion (VCO) using a 1.4-Fr dual-pressure conductance catheter and in a subgroup of eight animals during aortic occlusion (AOO). Aortic flow was obtained from numerical differentiation of VLV. AOO increased input impedance ( Zin) for the first two harmonics, increased characteristic impedance (0.025 ± 0.007 to 0.040 ± 0.011 mmHg·μl−1·s, P < 0.05), and shifted the minimum in Zin from the third to the sixth harmonic. For all conditions, the Zin could be well represented by a four-element windkessel model. The augmentation index increased from 116.7 ± 7.8% to 145.9 ± 19.5% ( P < 0.01) as well as estimated pulse-wave velocity (3.50 ± 0.94 to 5.95 ± 1.62 m/s, P < 0.05) and arterial elastance ( Ea, 4.46 ± 1.62 to 6.02 ± 1.43 mmHg/μl, P < 0.01). AOO altered the maximal slope ( Emax, 3.23 ± 1.02 to 5.53 ± 1.53 mmHg/μl, P < 0.05) and intercept (−19.9 ± 8.6 to 1.62 ± 13.51 μl, P < 0.01) of the end-systolic pressure-volume relation but not Ea/ Emax (1.44 ± 0.43 to 1.21 ± 0.37, not significant). We conclude that simultaneous acquisition of Zin and arterial function parameters in the mouse, based solely on conductance catheter measurements, is feasible. We obtained an anticipated response of Zin and arterial function parameters following VCO and AOO, demonstrating the sensitivity of the measuring technique to induced physiological alterations in murine hemodynamics.
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Matušinská, Klára, Barbora Pipek, Andrea Fialová, and Petr Fojtík. "The effect of CDED diet on the development of remission in a patient with persistent Crohn’s disease activity – a case report and workplace experience." Gastroenterologie a hepatologie 75, no. 4 (August 30, 2021): 345–49. http://dx.doi.org/10.48095/ccgh2021345.
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The CDED diet (Crohn‘s disease exclusion diet) is the first elimination diet that induces and maintains remission in adult patients with mild to moderate Crohn‘s disease. It is based on mandatory, recommended and prohibited foods. In our article we present our workplace experience, that is still limited, as well as the case report of a patient with a long history of Crohn‘s disease in ileocecal localization on immunosuppressive therapy with azathioprine. He has benefited significantly from the CDED diet, his abdominal symptomatology and laboratory parameters have improved. There has also been a significant improvement in the quality of his life. Key words: CDED – Crohn’s disease – diet – alternative nutrition – relapse of the disease
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SYPECKÁ, Zuzana, Pavla HAVLOVÁ, and Michaela NEVRKLOVÁ. "Levels of Deoxynivalenol (DON) in Malt Prepared from Barley Artificially Inoculated with Fusarium spp. 1. Influence of DON on Gushing and Other Technological Parameters of Malt." Kvasny Prumysl 49, no. 6 (June 1, 2003): 146–53. http://dx.doi.org/10.18832/kp2003009.
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Aass, N., O. Klepp, E. Cavallin-Stahl, O. Dahl, H. Wicklund, B. Unsgaard, L. Baldetorp, S. Ahlström, and S. D. Fosså. "Prognostic factors in unselected patients with nonseminomatous metastatic testicular cancer: a multicenter experience." Journal of Clinical Oncology 9, no. 5 (May 1991): 818–26. http://dx.doi.org/10.1200/jco.1991.9.5.818.
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Between 1981 and 1986, 200 consecutive patients with metastatic nonseminomatous testicular cancer were entered into the Swedish Norwegian Testicular Cancer (SWENOTECA) project from 14 hospitals. The treatment plan was four chemotherapy cycles (cisplatin, vinblastine, and bleomycin) followed by surgical resection of residual tumor masses. After a median observation time of 75 months, the overall 5-year survival rate was 82%. In a univariate analysis, the following parameters influenced the prognosis significantly: the extent of the disease (Medical Research Council [MRC] grouping); the prechemotherapy levels of serum alpha-fetoprotein (AFP), human chorionic gonadotropin (HCG), and lactate dehydrogenase (LDH); the patients' age; the presence of extrapulmonary hematogeneous metastases; and/or particularly large lymph node metastases. Patients fared better when more than 3 weeks elapsed between orchiectomy and start of chemotherapy as compared with those who were treated within this interval. The place of treatment (a large oncology unit v smaller units) also represented a significant prognostic factor for patients with large-volume (LV) and very-large-volume (VLV) disease combined. Multivariate analysis (Cox regression proportional hazards model) performed in all 193 assessable patients showed the following adverse prognostic factors: high-volume metastatic burden, age older than 35 years, prechemotherapy AFP greater than 500 micrograms/L and/or HCG greater than 1,000 U/L, and an interval between orchiectomy and start of chemotherapy of less than 3 weeks. The place of treatment also significantly influenced the final outcome. If patients with LV and VLV disease were combined, the presence of two of the following risk factors represented an additional prognostic factor: AFP greater than 1,000 micrograms/L, HCG greater than 10,000 U/L, liver metastases, brain metastases, bone metastases, retroperitoneal tumor greater than or equal to 10 cm, and mediastinal tumor greater than or equal to 5 cm.
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Kreisberg, N. M., D. R. Worton, Y. Zhao, G. Isaacman, A. H. Goldstein, and S. V. Hering. "Development of an automated high temperature valveless injection system for on-line gas chromatography." Atmospheric Measurement Techniques Discussions 7, no. 7 (July 23, 2014): 7531–67. http://dx.doi.org/10.5194/amtd-7-7531-2014.
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Abstract. A reliable method of sample introduction is presented for on-line gas chromatography with a special application to in-situ field portable atmospheric sampling instruments. A traditional multi-port valve is replaced with a controlled pressure switching device that offers the advantage of long term reliability and stable sample transfer efficiency. An engineering design model is presented and tested that allows customizing the interface for other applications. Flow model accuracy is within measurement accuracy (1%) when parameters are tuned for an ambient detector and 15% accurate when applied to a vacuum based detector. Laboratory comparisons made between the two methods of sample introduction using a thermal desorption aerosol gas chromatograph (TAG) show approximately three times greater reproducibility maintained over the equivalent of a week of continuous sampling. Field performance results for two versions of the valveless interface used in the in-situ instrument demonstrate minimal trending and a zero failure rate during field deployments ranging up to four weeks of continuous sampling. Extension of the VLI to dual collection cells is presented with less than 3% cell-to-cell carry-over.
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Slávik, Martin, and Igor Štefančík. "Porovnání vybraných kvalitativních znaků kmene dubových porostů při různém vlivu pomocných dřevin / Comparison of selected qualitative characteristics of stem in oak stands under varying effects of auxiliary tree species." Forestry Journal 61, no. 1 (March 1, 2015): 31–36. http://dx.doi.org/10.1515/forj-2015-0011.
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Abstract The paper analyses the influence of auxiliary trees species on selected qualitative characteristics of the parent oak stand aged 100-120 years from the tending aspect point of view. Stand structure described by relative height position, and stem straightness and branchiness as the main qualitative parameters were studied on 162 trees in three different forest stands: (i) without woody understorey, (ii) with understorey dominated by European hornbeam with an admixture of small-leaved linden and field maple, and iii) with understorey dominated by small-leaved linden. The results showed a positive effect of auxiliary tree species on the oak quality (straightness and branchiness of stems) in the lower part of the stem. Under the assumed elimination of genetic influences, better qualitative parameters of oak could be explained by the occurrence of auxiliary trees in the understorey.
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Walangululu, Masamba Jean, Iragi Daniel Muhindo, Safari Patrick Baluku, Christus Cito Miderho, Mulumeoderhwa Janvier Lyadunga, Shandwa Emile Sebakara, and Hugues Mvula. "Comportement de 7 variétés de haricot volubile dans trois territoires de la province du Sud Kivu en R. D. Congo et recherche de la meilleure saison de culture." Journal of Animal & Plant Sciences 41.3 (September 30, 2019): 6989–99. http://dx.doi.org/10.35759/janmplsci.v41-3.3.
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1 RESUME Les variétés de haricot volubile Namulenga et CODMLV 059 avaient été introduites dans les essais effectués dans les groupements Mushinga du territoire de Walungu et Bushumba du territoire de Kabare dans le cadre du projet Legume choice, dans l’intention de rechercher de nouvelles niches pour le haricot volubile ; les résultats ont montré que les deux variétés se sont très bien comportées et ont montré des rendements appréciés de la part des paysans de ces groupements, un peu plus pour CODMLV 059 dans le territoire de Kabare et un peu plus pour Namulenga en territoire de Walungu. L’inclusion de la variété Namulenga dans les travaux de dissémination du paquet technologique conçu par la faculté d’agronomie de l’Université Catholique de Bukavu (U.C.B.) dans le groupement Mulamba en territoire de Walungu, a donné un rendement inférieur par rapport au potentiel de cette variété. Il a alors été pensé entre plusieurs suppositions que cette variété n’était certainement pas adaptée dans ce groupement. Le paquet technologique est basé sur une association manioc-légumineuses ou manioc-maïs ou maïs- légumineuses selon les saisons et les sites, en y incorporant les engrais minéraux et organiques. Ainsi en marge des essais de dissémination du paquet technologique du projet VLIR à Mulamba en territoires de Walungu, à Kavumu, en territoire de Kabare et de Kalehe en territoire de Kalehe, il a été entrepris ce travail de comportement de 7 variétés de haricot volubile dans ces milieux afin de choisir une variété à incorporer dans les essais de dissémination en vue d’augmenter la production de haricot dans le Sud Kivu et identifier la meilleure saison de culture. Ce travail a été conduit en deux saisons successives en 2017 (octobre à décembre) et 2018 (janvier à juillet) sur un dispositif en blocs randomisés avec trois répétitions en utilisant les variétés Namulenga, Nyiramuhondo, CODMLV 059, Nain de Kyondo, Cuarentino 0817, M211 et Puebla Criolla. Les paramètres végétatifs et de rendement ont été observés. Les résultats ont montré que les paramètres végétatifs (hauteur des plants et nombre de feuilles) et ceux de rendement étaient plus élevés en saison B qu’en saison A et que dès lors, la saison B peut être considérée comme la plus favorable. Sur le plan du rendement, il y a eu des variations allant de 0,878 à 4,960 t/ha en saison B, la meilleure saison, selon les sites mais les variétés suivantes peuvent être recommandées : Nyiramuhondo, Namulenga et Puebla Criolla, pourvu que bien entendu elles puissent présenter de bonnes qualités culinaires et sensorielles. ABSTRACT In the framework of legume choice project, Namulenga and CODMLV 059 climbing bean varieties were introduced in Mushinga administrative area, Walungu territory, and in Bushumba administrative area, Kabare territory, as niche exploration for climbing beans. Results showed that performance of both varieties was not very different although a trend of CODMLV 059 performing better in the Bushumba site and Namulenga giving slightly better performance in Mushinga; these varieties were appreciated and adopted by farmers of these areas. When introduced in the dissemination of project package of VLIR project of the faculty of agriculture, Catholic University of Bukavu, in Mulamba administrative area, the yield of Namulenga climbing bean was low compared to its potential. It was thought among many thought that this variety is not adapted in that area. The project package is scaling up an association of cassava and legumes or cassava- legumes and maize or maize and cassava with farm yard manure and fertilizer in Mulamba, Kalehe and Kavumu administrative areas, in order to increase legume production. Therefore, it was decided that beside dissemination trials to carry out other trials in all three sites, comparing seven climbing beans varieties in order to select best one to be included in the dissemination trials. This work was carried out in two consecutive cropping seasons: B season (February to July) in 2018 and A season (October to December) in 2017, on a randomized bloc design with three replications, using Namulenga, Nyiramuhondo, CODMLV 059, Nain de Kyondo, Cuarentino 0817, M211 and Puebla Criolla varieties, in order to also find the best cropping season. Observations were made on vegetative parameters (percent germination, plant height, collar diameter and leaf number) and production parameters (weight of hundred grains, number of pods per plant, number of grain per pod and yield). Results revealed that vegetative parameters (plant height and leaf number) and those of yield were higher in B season (January to July 2018) than in A season (October to December 2017), suggesting therefore that B season is the best cropping season for climbing beans. Yield varied between 0.878 and 4.960 tons per hectare in the best season, according to sites but following varieties can be recommended, provide their cooking and taste qualities: Nyiramuhondo, Namulenga and Puebla Criolla.
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Benson, Abigail, Ward Appeltans, Lenore Bajona, Samuel Bosch, Paul Cowley, Daphnis De Pooter, Peter Desmet, et al. "Outcomes of the International Oceanographic Data and Information Exchange Ocean Biogeographic Information System OBIS-Event-Data Workshop on Animal Tagging and Tracking." Biodiversity Information Science and Standards 2 (July 3, 2018): e25728. http://dx.doi.org/10.3897/biss.2.25728.
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The Ocean Biogeographic Information System (OBIS) began in 2000 as the repository for data from the Census of Marine Life. Since that time, OBIS has expanded its goals beyond simply hosting data to supporting more aspects of marine conservation (Pooter et al. 2017). In order to accomplish those goals, the OBIS secretariat in partnership with its European node (EurOBIS) hosted at the Flanders Marine Institute (VLIZ, Belgium), and the Intergovernmental Oceanographic Commission (IOC) Committee on International Oceanographic Data and Information Exchange (IODE, 23rd session, March 2015, Brugge) established a 2-year pilot project to address a particularly problematic issue that environmental data collected as part of marine biological research were being disassociated from the biological data. OBIS-Event-Data is the solution that was developed from that pilot project, which devised a method for keeping environmental data together with the biological data (Pooter et al. 2017). OBIS is seeking early adopters of the new data standard OBIS-Event-Data from among the marine biodiversity monitoring communities, to further validate the data standard, and develop data products and scientific applications to support the enhancement of Biological and Ecosystem Essential Ocean Variables (EOVs) in the framework of the Global Ocean Observing System (GOOS) and the Marine Biodiversity Observation Network of the Group on Earth Observations (GEO BON MBON). After the successful 2-year IODE pilot project OBIS-ENV-DATA, the IOC established a new 2-year IODE pilot project OBIS-Event-Data for Scientific Applications (2017-2019). The OBIS-Event-Data data standard, building on Darwin Core, provides a technical solution for combined biological and environmental data, and incorporates details about sampling methods and effort, including event hierarchy. It also implements standardization of parameters involved in biological, environmental, and sampling details using an international standard controlled vocabulary (British Oceanographic Data Centre Natural Environment Research Council). A workshop organized by IODE/OBIS in April brought together major animal tagging and tracking networks such as the Ocean Tracking Network (OTN), the Animal Telemetry Network (ATN), the Integrated Marine Observing System (IMOS), the European Tracking Network (ETN) and the Acoustic Tracking Array Platform (ATAP) to test the OBIS-Event-Data standard through the development of some data products and science applications. Additionally, this workshop contributes to the further maturation of the GOOS EOV on fish as well as the EOV on birds, mammals and turtles. We will present the outcomes as well as any lessons learned from this workshop on problems, solutions, and applications of using Darwin Core/OBIS-Event-Data for bio-logging data.
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Škarohlíd, Marcel. "Vliv obsahu CO2 v palivu na parametry plynového motoru." Paliva, 2011, 111. http://dx.doi.org/10.35933/paliva.2011.04.01.
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Gurkovský, Václav, and Tomáš Galia. "Vliv říčního dřeva na morfologické a sedimentologické parametry koryta na příkladu meandrujícího toku Odry." Geologické výzkumy na Moravě a ve Slezsku 26, no. 1-2 (December 4, 2019). http://dx.doi.org/10.5817/gvms2019-1-2-34.
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Instream wood is a natural phenomenon that signifi cantly influences a function of the fluvial system in forested river basins and represents a natural part of this system. However, the majority of these relatios between instream wood and fluvial ecosystems were investigated in mountain streams or gravel-bed rivers and we are lacking field data from lowland meandering rivers. This study deals with the complex assessment of instream wood on morphology and sediment parameters including the content of organic material at spatially detailed scale of the selected bend of the Odra River. Within the site of interest (66.5 river km), 12 instream wood pieces were identified (lenght ≥ 1 m, diameter ≥ 10 cm). Their presence significantly affected river morphology, when they were the main initiator of pool formation. In total, 28 samples of surface bed sediments were collected from the thalweg, bars and lateral pool. In laboratory, samples were subjected to grain size analysis (sieving method) and loss on ignition (LOI) to obtain content of organic matter. The majority of bed sediment samples were coarse grained and these samples were located in the thalweg. The main component of these samples is gravel, often supplemented with admixtures of finer fractions. The analysis of data did not show the effect of instream wood on the deposition of organic matter in bed sediments. One of the reasons may be the presence of coarse grained material which generally contains a small amount of organic matter.
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Watanabe, Yusuke, Pascal Fuchshuber, Takafumi Homma, Elif Bilgic, Amin Madani, Naoki Hiki, Ivor Cammack, et al. "An Unmodulated Very-Low-Voltage Electrosurgical Technology Creates Predictable and Ultimate Tissue Coagulation: From Experimental Data to Clinical Use." Surgical Innovation, March 18, 2020, 155335062090461. http://dx.doi.org/10.1177/1553350620904610.
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Objective. We analyzed the underlying principles of an unmodulated very-low-voltage (VLV) mode, designated as “soft coagulation” in hemostasis, and demonstrate its clinical applications. Summary Background Data. While the advantage of the VLV mode has been reported across surgical specialties, the basic principle has not been well described and remains ambiguous. Methods. Characteristics of major electrosurgical modes were measured in different settings. For the VLV mode, the tissue effect and electrical parameters were assessed in simulated environments. Results. The VLV mode achieved tissue coagulation with the lowest voltage compared with the other modes in any settings. With increasing impedance, the voltage of the VLV mode stayed very low at under 200 V compared with other modes. The VLV mode constantly produced effective tissue coagulation without carbonization. We have demonstrated the clinical applications of the method. Conclusions. The voltage of the VLV mode consistently stays under 200 V, resulting in tissue coagulation with minimal vaporization or carbonization. Therefore, the VLV mode produces more predictable tissue coagulation and minimizes undesirable collateral thermal tissue effects, enabling nerve- and function-preserving surgery. The use of VLV mode through better understanding of minimally invasive way of using electrosurgery may lead to better surgical outcomes.
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Ippolito, Davide, Maria Ragusi, Davide Gandola, Cesare Maino, Anna Pecorelli, Simone Terrani, Marta Peroni, et al. "Computed tomography semi-automated lung volume quantification in SARS-CoV-2-related pneumonia." European Radiology, October 30, 2020. http://dx.doi.org/10.1007/s00330-020-07271-0.
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Abstract Objectives To evaluate a semi-automated segmentation and ventilated lung quantification on chest computed tomography (CT) to assess lung involvement in patients affected by SARS-CoV-2. Results were compared with clinical and functional parameters and outcomes. Methods All images underwent quantitative analyses with a dedicated workstation using a semi-automatic lung segmentation software to compute ventilated lung volume (VLV), Ground-glass opacity (GGO) volume (GGO-V), and consolidation volume (CONS-V) as absolute volume and as a percentage of total lung volume (TLV). The ratio between CONS-V, GGO-V, and VLV (CONS-V/VLV and GGO-V/VLV, respectively), TLV (CONS-V/TLV, GGO-V/TLV, and GGO-V + CONS-V/TLV respectively), and the ratio between VLV and TLV (VLV/TLV) were calculated. Results A total of 108 patients were enrolled. GGO-V/TLV significantly correlated with WBC (r = 0.369), neutrophils (r = 0.446), platelets (r = 0.182), CRP (r = 0.190), PaCO2 (r = 0.176), HCO3− (r = 0.284), and PaO2/FiO2 (P/F) values (r = − 0.344). CONS-V/TLV significantly correlated with WBC (r = 0.294), neutrophils (r = 0.300), lymphocytes (r = −0.225), CRP (r = 0.306), PaCO2 (r = 0.227), pH (r = 0.162), HCO3− (r = 0.394), and P/F (r = − 0.419) values. Statistically significant differences between CONS-V, GGO-V, GGO-V/TLV, CONS-V/TLV, GGO-V/VLV, CONS-V/VLV, GGO-V + CONS-V/TLV, VLV/TLV, CT score, and invasive ventilation by ET were found (all p < 0.05). Conclusion The use of quantitative semi-automated algorithm for lung CT elaboration effectively correlates the severity of SARS-CoV-2-related pneumonia with laboratory parameters and the need for invasive ventilation. Key Points • Pathological lung volumes, expressed both as GGO-V and as CONS-V, can be considered a useful tool in SARS-CoV-2-related pneumonia. • All lung volumes, expressed themselves and as ratio with TLV and VLV, correlate with laboratory data, in particular C-reactive protein and white blood cell count. • All lung volumes correlate with patient’s outcome, in particular concerning invasive ventilation.
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Ježková, Jaroslava, and Zdeněk Máčka. "Vliv sedimentačního prostředí na magnetickou susceptibilitu přelivových sedimentů nivy Moravy ve Strážnickém Pomoraví." Geologické výzkumy na Moravě a ve Slezsku 27, no. 1-2 (November 30, 2020). http://dx.doi.org/10.5817/gvms2020-12323.
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Four profiles in different sedimentary environments - natural levee, proximal floodplain, distal floodplain, oxbow lake - were sampled to obtain magnetic susceptibility (MS), grain size, organic matter content (LOI) and pH. Relationships between selected parameters (χlf, D50, LOI, pH) were analysed by means of statistical analysis (linear regression, PCA, factor analysis). Principal goal was to investigate how character of individual sedimentary environments and their distance from the active river channel is reflected in the magnetic signal of overbank deposits. A decrease in the magnetic signal with increasing distance from the river channel was shown, confirming that fluvial deposition is a major factor of contamination of floodplain sediments by anthropogenic magnetic particles. The base of elevated values of MS (levee: 80 cm, proximal floodplain: 30 cm) probably corresponds to the turn of the 19th and 20th century and the strongest magnetic signal (levee: 32,5 cm, proximal floodplain: 5 cm) belongs to the 1980s. Statistically significant relationships were found between: χlf and LOI (direct dependence), LOI and D50 (indirect dependence), pH and D50 (direct dependence) when data from all profiles were analysed together.
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Bartáková, Irena, Martin Chvál, and Patricia Martinková. "Predikční validita zkoušek zakončujících středoškolské vzdělávání a přijímacích testů na vysoké školy." Pedagogika 68, no. 1 (May 2, 2018). http://dx.doi.org/10.14712/23362189.2017.1016.
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Abstrakt: Přehledová studie mapuje vybrané výzkumy predikční validity zkoušek zakončujících středoškolské vzdělávání a přijímacích testů na vysoké školy. Predikční validita je důležitou vlastností testu a vyjadřuje jeho schopnost předpovídat budoucí úspěch. Mezi nejužívanější prediktory patří právě výsledky v přijímacích testech a hodnocení ze středních škol, přičemž porovnávání jejich vlivu je jedním z často diskutovaných témat. Ač existuje několik kritérií akademického úspěchu, nejčastěji je využíván studijní průměr během prvního ročníku studia, postup do druhého ročníku nebo úspěšné dokončení studia. Analyzované studie jsou rozděleny do kapitol podle jejich hlavního cíle, od studií zaměřujících se na středoškolské zkoušky ke studiím zjišťujícím predikční validitu přijímacích zkoušek. Dalším kritériem řazení je země původu dat. Samostatná část je věnována výzkumům v České republice. Ze studií jednoznačně vyplývá, že využití přijímacích testů i prospěchu ze střední školy je v rámci přijímacích řízení na vysoké školy opodstatněné. Oba tyto parametry dokáží předpovědět, zda student bude ve studiu úspěšný i zda studium zdárně dokončí, přičemž nejlepších výsledků bývá dosaženo při zohlednění obou těchto parametrů současně.Klíčová slova: predikční validita, průměr známek, středoškolský prospěch, přijímací testy, prediktor, akademický úspěch, prospěch na VŠ.
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"Defect Structure of Co2+ Center in α-LiIO3 Crystal." Zeitschrift für Naturforschung A 55, no. 9-10 (October 1, 2000): 828–32. http://dx.doi.org/10.1515/zna-2000-9-1013.
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Abstract In this paper we establish the formulas of EPR g||, g⟂, for 3d7 ions in trigonal octahedral crystals from a cluster approach. In these formulas, the contributions from configuration interaction-and covalency-effects are considered. The parameters related to both effects can be determined from the optical spectra and the structural parameters of the studied crystal. With these formulas, the defect structure of a Co2+ center in α-LiIO3 crystal is studied. It is found that, to reach good fits between the calculated and observed g||, g⟂ , the O2_ ions between Co2+ and Li+ vacancy (VLi) should shift away from the VLi by about 0.49 Å. The displacement direction is consistent with those obtained for Cr3+ , Fe3+ , and Mn2+ centers in α-LiIO3 crystals as well as with the expectation based on the electrostatic interaction model.
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"An Energy Efficient Register File Architecture for VLIW Streaming Processors on FPGAs." International Journal of Engineering and Advanced Technology 9, no. 1S3 (December 31, 2019): 10–14. http://dx.doi.org/10.35940/ijeat.a1003.1291s319.
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The design of a register file with large scalability, high bandwidth, and energy efficiency is the major issue in the execution of streaming Very Long Instruction Word (VLIW) processors on Field Programmable Gate Arrays (FPGA's). This problem arises due to the fact that accessing multi-ported register files that can use optimized on-chip memory resources as well as enabling the maximum sharing of register operands are difficult provided that FPGA's on-chip memory resources only support up to two ports. To handle this issue, an Inverted Distributed Register File (IDRF) architecture is proposed in this article. This new IDRF is compared with the existing Central Register File (CRF) and the Distributed Register File (DRF) architectures on parameters such as kernel performance, circuit area, access delay, dynamic power, and energy. Experimental results show that IDRF matches the kernel performance with the CRF architecture but 10.4% improvement in kernel performance as compared to DRF architecture. Similar experimental results related to the circuit area, dynamic power, and energy are discussed in this article.
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Tentea, Calina-Patricia, Roxana Chiorescu, Sorin Crisan, Sorin Pop, Jeremy N. Ruskin, and Dan Blendea. "Abstract 16337: A Risk Score That Predicts Recurrence of Neurally Mediated Syncope Using Electrocardiographic and Vectorcardiographic Parameters." Circulation 142, Suppl_3 (November 17, 2020). http://dx.doi.org/10.1161/circ.142.suppl_3.16337.
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Introduction: We have previously demonstrated that isolated very low QRS voltage (VLV defined as ≤0.3mV) in the frontal leads on the electrocardiogram (ECG; Figure A), as well as flat QRS loops in the frontal plane on ECG-derived vectorcardiograms (VCG; Figure B) predict recurrence of neurally mediated syncope (NMS). This phenomenon is possibly related to a specific ventricular geometry and activation pattern. Hypothesis: The aim of this study was to attempt to incorporate these novel ECG and VCG risk factors for recurrence of syncope into a prognostic risk score. Methods: We included 215 patients (age 48±20years), with NMS and a median of 3 syncopal episodes. The patients were followed for a median of 10 months (IQR 4-20). To weigh the relative importance of the prognostic risk factors identified in multivariate Cox regression analysis we attributed a score of 1 point for HR 1.5-1.99, 2 points for HR 2.0-2.49, and 3 points for HR ≥ 2.5. The total risk score, was divided into three categories: low risk (0-2), intermediate risk (3-5) and high risk (≥6). Results: The multivariate analysis identified history of ≥ 2 syncopal events (HR 3.85, 95%CI 1.62-9.14), left ventricular end-diastolic diameter of < 39mm by echocardiography (HR 1.94, 95%CI 1.00-3.82), isolated VLV QRS in frontal leads (HR 2.60, 95%CI 1.37-4.86) and flat QRS VCG loops in frontal plane (HR 2.23, 95%CI 1.24-3.99) as independent predictors for NMS recurrence (all P < 0.05). The actuarial total syncope recurrence rate at 1 year was 54.6% (95%CI 38.2-72.6) in the high-risk score category, 25.3% (95%CI 16.8-37.1) in the intermediate risk category, and 6.2% (95%CI 2.2-16.2) in the low-risk category (log rank test P<0.0001; Figure C). The ROC curve showed an AUC of 0.77 for the predictive value of the total risk score. Conclusions: The risk of recurrence of NMS could be stratified using a risk score that incorporates novel ECG and VCG parameters in addition to more established clinical and echocardiographic variables.
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Geronymo, Beatriz Baaklini, Filomena Marinho Carvalho, Adriana Akemi Yoshimura, Juliana Zabukas de Andrade, Danúbia Ariana Andrade, and Alfredo Carlos Simoes Dornelas de Barros. "Correlation between the presence of androgenic receptors and molecular and histopathological variables in breast cancer." Mastology 30, Suppl 1 (2020). http://dx.doi.org/10.29289/259453942020v30s1061.
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Introduction: The expression of androgenic receptors (AR) is a new predictive marker of response and prognosis in invasive breast carcinoma (BC). It emerges as a potential therapeutic target. Objective: To evaluate the frequency of AR positivity and its correlation with molecular and histopathological parameters in infiltrative BC. Method: Retrospective cohort study, analyzing 119 cases of invasive non-metastatic BC, seen at a private clinic. Hormonal receptors were screened by immunohistochemical reaction, and AR were considered positive when present in at least 10% of cells, ER and PR from 1%. This finding was correlated with pathological staging, histological grade (HG), vascular-lymphatic invasion (VLI), estrogen (ER) and progesterone receptors (RP), HER2 and Ki 67. Results: Androgen receptors were positive in 80.6% of cases. In the assessment of pathological staging, of the 63 patients with stage I, 81% showed positive androgen receptors, while among the 28 patients with stage II, 75% had positive androgen receptors, and 88% of the 17 patients with stage III presented the positivity of the recipient. Regarding the histological parameters of the tumor, 16 patients had grade 1 tumors, 93.7% of them with positive androgen receptors, while among the 63 with grade 2 tumors 90.4% had androgen receptor positivity, and only 59, 3% of the 27 tumors evaluated as grade 3 had a positive androgen receptor. The vascular-lymphatic invasion was negative in 57 patients, 78.9% of the tumors with positive androgen receptor. Among the 56 tumors with positive vascular-lymphatic invasion, 85.7% had an androgen receptor positivity. In the immunohistochemical evaluation of tumors, among the 95 patients with positive estrogen receptors, 91.5% also had positive androgen receptor, which was positive in only 37.5% of the 24 patients with negative estrogen receptors. Of the 21 patients who had tumors with overexpressed HER, 85.7% also had positive androgen receptors, which were also positive in 86.4% of 96 without overexpression of HER2. In the evaluation of cell proliferation by the Ki67 antigen, among the 50 tumors with Ki67 <20%, 94% had positive androgen receptors, while 83.7% were positive among the 49 tumors with Ki67 between 20 and 50% and only 35% positivity of androgen receptors in 17 tumors with Ki67> 50%. Conclusions: AR positivity is associated with more differentiated hormone-dependent tumors with a lower proliferation rate.