Příspěvek se zaměřuje na zavádějící příběh o tzv. kodaňské interpretaci kvantové mechaniky, již jako údajně nerozpornou či jednotnou vytvořili a sdíleli na základě tzv. kodaňského ducha kvantové teorie její tvůrci v roce 1927. Článek bude vycházet z role, kterou v tomto příběhu sehráli především dva významní fyzikové N. Bohra W. Heisenberg. První část příspěvku seznamuje s variacemi toho, co se v literatuře považuje za kodaňskou interpretaci. Druhá část odhaluje, že zatímco kvantová mechanika vznikla ve dvacátých letech 20. století, kodaňská interpretace je veskrze problematickým a především Heisenbergovým produktem z let padesátých. Jednou z hlavních motivací, kvůli níž vystoupil s tzv. kodaňskou interpretací, byla obrana vůči množícím se kritikám obhájců kvantové teorie. Jelikož mezi členy tzv. kodaňské školy nepanovala žádná jednotná či nerozporná interpretace kvantové mechaniky, zaměřuje se poslední část příspěvku na několik vybraných rozdílů hlavně mezi Bohrovým a Heisenbergovým výkladem kvantové teorie., The article focuses on the misleading story of the so-called Copenhagen interpretation of quantum mechanics. The interpretation was allegedly created as unitary or consistent and shared by its founders in 1927 by virtue of the so-called Copenhagen spirit of quantum theory. The paper is based on the role which two leading figures, Niels Bohr and Werner Heisenberg, played in this story. The first part of the article introduces variations of what is considered to be Copenhagen interpretation. The second part reveals that while quantum mechanics had originated in the 1920s, the Copenhagen interpretation was mainly a problematic Heisenberg’s product of the 1950s. One of his main motivations for the introduction of Copenhagen interpretation was to set up a defence against increasing criticism of the supporters of quantum theory. Since there was no unitary or consistent interpretation of quantum mechanics among members of the so-called Copenhagen school, the last part of the paper focuses on several differences primarily between Bohr and Heisenberg’s interpretation., Filip Grygar., and Obsahuje bibliografii
The aim of this article is to analyze the main contributions of Wesley C. Salmon to the philosophy of science, that is, his concepts of causation, common cause, and theoretical explanation, and to provide a critique of them. This critique will be based on a comparison of Salmon’s concepts with categories developed by Hegel in his Science of Logic and which can be applied to issues treated by Salmon by means of the above given three concepts. It is the author’s contention that by means of Hegelian categories it becomes possible to provide a critique of Salmon’s philosophy of science and at the same time to enlarge the concept framework of philosophy of science., Cílem tohoto článku je analyzovat hlavní přínosy Wesleyho C. Lososa k filosofii vědy, tj. K jeho příčinám, společné příčině a teoretickému vysvětlení, a poskytnout jim kritiku. Tato kritika bude založena na srovnání konceptů Salmon s kategoriemi vyvinutými Hegelem v jeho Science of Logic a které lze aplikovat na otázky ošetřené lososem pomocí výše uvedených tří pojmů. Je to autorovo tvrzení, že prostřednictvím hegelovských kategorií je možné poskytnout kritiku Salmonovy filosofie vědy a zároveň rozšířit koncepční rámec filozofie vědy., and Igor Hanzel
A review of West Palaearctic species of the genus Eloeophila Rondani, 1856 is presented. Three species are redescribed, viz. E. czernyi (Strobl in Czerny & Strobl, 1909), E. laciniata (Edwards, 1928), and E. pusilla (Kuntze, 1920). A lectotype of the latter is designated. Eloeophila albofascia (Alexander, 1975) is established as a new junior synonym of E. apicata (Loew, 1871). Descriptions are provided of E. bipartita sp. n. (North Italy), E. delmastroi sp. n. (North Italy), E. lucasi sp. n. (South Italy and Sicily), E. maroccana sp. n. (Morocco, Spain), E. martinovskyi sp. n. (South Italy), E. minor sp. n. (Czech Republic, Slovakia), E. pectinistylus sp. n. (Spain), E. punctulata sp. n. [Cyprus, Greece (Crete)], E. sparsipunctum sp. n. (Bulgaria), and E. tigricosta sp. n. (Spain). A key to males of all West Palaearctic species is presented.
In May 1980, the WEDOC-1 was carried out covering 14 simultaneous stations and establishing a first link between observatories in Western and Eastern Europe. In order to improve the results of WEDOC-1 using a better station configuration and refined software and calibration techniques a second campaign WEDOC-2 was initiated by Graz (Austria) and Penc (Hungary). The configuration comprized 27 stations in 18 countries which carried out simultaneous Doppler observations from September 6th to 16th, 1983. Four different calibration campaigns were used to estimate receiver and program biases. Station coordinates have been computed by means of the programs GEODOP in Graz and SADOSA in Budapest. and V maje 1980 g. byla osuščestvlena kampanija "WEDOC-1", v kotoruju vključilos' 14 stancij. Vpervyje osuščestvlena privjazka meždu observatorijami Zapadnoj i Vostočnoj Jevropy. Čtoby ulučšit' rezul'taty kampanii "WEDOC-1" vtoraja kampanija "WEDOC-2" byla osuščestvlena observatorijami Grac (Avstrija) i Penc (Vengrija) s ulučšennoj konfiguracijej stancij, ulučšennym obespečenijem i technikoj kalibrovki. Konfiguracija vključila 27 stancij v 18 stranach, kotoryje vypolnili sinchronnyje nabljudenija s 6 - 16 sentjabrja 1983 g. Primenili četyre raznych kampanii kalibrovki, čtoby ocenit' pograšnosti prijemnika i vyčislitelnoj programmy. Koordinaty stancij byli vyčisleny s pomošč'ju programm GEODOP v Grace i SADOSA v Budapešte.
To understand the evolution of insect gut symbionts it is important to determine how they are passed on to the next generation. We studied this process in Erwinia species bacteria that inhabit the gut of western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae). This is a polyphagous herbivore and a world-wide pest in agricultural crops. With bacteria in the gut, the thrips larval development time can be shorter and its oviposition rate higher compared to bacteria-free thrips. Bacteria are not directly transmitted from mother to offspring, but larvae acquire bacteria from the leaves right after they hatch. These gut bacteria are present on the leaves on feeding sites used by other thrips before the larvae arrive, probably because these other thrips have deposited bacteria via faeces or regurgitation. In this study we addressed the question whether the transmission route of symbiotic bacteria influences the thrips feeding behaviour, and determined the feeding and oviposition preference of thrips, by giving them a choice between leaves with and leaves without prior grazing by other western flower thrips. This was studied for thrips with and thrips without gut bacteria. Young larvae prefer to feed on leaves that where grazed before by other thrips and females prefer to oviposit on these grazed leaves. These results are in contradiction to earlier studies that have found that thrips larvae fitness is lower on thrips damaged plants than on clean plants. This behaviour does however promote the establishment of gut bacteria in the thrips. The factors determining the preference for thrips-damaged leaves may be the physical leaf damage or odours that are produced by the plant, the bacteria or both.
After the formulation of the photosynthetic unit (PSU) concerning the cooperation of 2400 chlorophyll molecules in the reduction of one molecule of C02 by Emerson and Arnold in 1932, the search for a morphological expression of the functional unit began. The quantasome hypothesis is an attempt to relate the structure visible in the electron microscope, the quantasome, and the PSU. The term 'quantasome' was introduced by Park and Calvin as a name for grana subunits. The quantasomes were regarded as the main integral parts of the grana lamellae in the protein lipid layers. Yet it soon became clear that a morphological mit such as the quantasomes did not exist. Nevertheless, the term was still used in various applications till the eighties.