In the present study, changes in the infectivity and effectiveness of four
strains of different origin were investigated in calcareous loamy chernozem soils treated with Cd at three levels (0, 50, 100 mg Cd kg
) in a pot experiment. Frequency of infection (F%), arbuscular richness (a%) and shoot dry matter, macro-(N, P, K, S, Ca, Mg) and microelements (Zn, Cu, Ni, Mn, Mo, Co) and the Cd content of the host plants were compared to determine whether there was any variability in infectivity and effectiveness between
strains of different origin. Functional diversity was found in the infectivity and effectiveness of the studied
strains. In Cd-treated soil, AMF inoculation was beneficial to the plant growth, P uptake and shoot Cd content of the host. However, the higher uptake of other macro- and microelements was noted for non-mycorrhizal plants compared to mycorrhizal plants. The lower shoot content of some elements did not cause nutrient deficiency in mycorrhizal plants. The present results support the hypothesis that in polluted soils, the development of mycorrhizal symbiosis has the potential for AMF to protect their hosts against Cd toxicity rather than to improve nutrient uptake.
The aim of the present study was to observe the effect of metal non-adapted arbuscular mycorrhizal fungi (AMF) application on the metal uptake of the host plant in a pot experiment. The soil samples originated from a calcareous chernozem soil treated with Cd, Ni and Zn with ryegrass (Lolium perenne L.) as the test plant. Changes in the parameters of mycorrhizal root colonization and in the metal uptake of the host as affected by metal type, metal rate and mycorrhizal treatments were investigated. efficient mycorrhizal symbiosis was found to develop; the heavy metal uptake of the plants decreased in the presence of this symbiosis with metal non-adapted AMF.
The spores of 6 species of arbuscular mycorrhizal (AM)
fungi (Glomeromycota) were collected, described and illustrated in three
different habitats of semiarid open sandy grasslands in Hungary (Nagykáta,
Domonyvölgy, Fülöpháza). Glomus constrictum, G. corymbiforme, G. microcarpum,
Sclerocystis sinuosa, Scutellospora dipurpurescens, and S. persica are reported
firstly from Hungary.
This study presents the examination of the leadership in a multi-national company in Debrecen, in which we examine the relationship between lean and leadership. We identified the competitiveness within a kaizen implementation of the company's moderators with the help of a questionnaire. With help of the identified management competencies we determine the leadership style, which is necessary for the operation of a successful and effective lean management.
Authors:T. Ljubka, Á. Lovas-Kiss, A. Takács and A. Molnár V.
Epipactis albensis Nováková et Rydlo (Orchidaceae), a species previously undocumented in the flora of Ukraine, was found in three localities in this country (in vicinity of Chetfalva, Fanchykovo and Drotyntsi, Zakarpattia district) in 2012. The species (originally described from the Czech Republic) recently has only been known to exist in seven Central European countries. The three Ukrainian populations described here stretch within the floodplain of river Tisza. Based on measurements in 14 localities in Hungary, Ukraine and Romania the species has a considerably wide soil reaction tolerance (from 3.6 to 7.2 pHKCl). The fruit set of this strictly autogamous species is reasonably high (78%). The mean±SD thousand seed weight of the species was 0.0030±0.0005 grams, therefore E. albenis is classified into the hypermeichor seed-weight class. Recent discoveries of the species in Romania and Ukraine raise the possibility of its occurrence in further European countries.
Authors:A. Matkó, E. Szűcs, T. Takács and S. Kovács
Today, companies have to face new challanges because of the globalization, new technologies, globalization of markets and increasing competition. In this accelerated world, it is essential that the companies adapt to the market, which is only available through the necessary information. The importance of market research is undoubted. In our study we would like to prove that in case of a beginner company — in this case a confectionery — it is important to perform a market research like for a company in any other segment. To perform it, the qualitative market research methods were used. Our questionnaire examines several aspects in order to provide an indication of the company’s founding.
Authors:Gábor Takács, Cs. Szalay, B. Nagy, I. Szabó, D. Simon, T. Berki and Z. Karádi
The nucleus accumbens (NAcc), an important basal forebrain structure, has a central integratory function in the control of feeding and metabolism. The primary cytokine interleukin-1β (IL-1β) exerts its neuromodulatory effects on the endocrine functions both centrally and peripherally. The present study was designed to elucidate the possible consequences of direct administration of IL-1β into the NAcc on the endocrine regulation of metabolism. Plasma concentrations of insulin and leptin, two key hormones in the homeostatic control were determined 15 minutes after a single bilateral microinjection of IL-1β into the NAcc of adult male Wistar rats, and the effects were compared with those found in vehicle treated control animals. Insulin plasma levels of the cytokine treated animals were significantly higher than those parameters of the control rats. No differences were found in leptin plasma concentrations between the two groups. Our findings show that IL-1β mediated processes in the NAcc have important roles in the central neuroendocrine control.
Nowadays other aspects of motivation are also displayed, including in relation to organizational culture. Visible and invisible elements of organizational culture have an impact on performance of workers. Shared values and knowledge by employees are resulting a strong organizational culture. The better the organizational culture, the higher level of motivation is manifested among employees. According to the observations, if in an organization there is a strong organizational culture with gratitude and recognition towards employees, this will cause the strengthening of motivation and significant performance improvements. The objective our study is examining the relationship between organizational culture and motivation and how dimensions of organizational culture motivate employees of the organization.
Authors:F. Ditrói, S. Takács, F. Tárkányi, E. Corniani, R. Smith, M. Jech and T. Wopelka
In the present work we demonstrate the development of a thin layer activation (TLA) method to be able to measure micrometer
wear or less by using radioactive tracing. In order to activate very swallow depths we decreased the bombarding energy to
the “linear” region of the cross-section curve. The disadvantage of the method is that the wear curve will be “linear” near
to the surface instead of “constant” as is the case with the usual (high energy) TLA. The advantage is that the activity of
the sample will be much lower and it is concentrated in the swallower studied depth. The other possible method is irradiation
under small angle (15 to 30° or even grazing incidence), which also causes a near-surface concentration of the activity produced.
Both methods are demonstrated with the most suitable nuclear reactions and some commonly used industrial materials.
Authors:László Barna, Zsuzsanna Takács-Szabó and László Kostyál
Összefoglaló.Bevezetés: Congenitalis coronariaanomáliának tekintik azokat a
coronariamorfológiai rendellenességeket, melyek 1%-nál kisebb gyakorisággal
fordulnak elő. Többségük nem jár tünettel, olykor azonban okozhatnak mellkasi
fájdalmat, eszméletvesztést, és hirtelen halálhoz is vezethetnek. A
coronariaanomáliák gyakoriságáról Magyarországon eddig csak invazív
koronarográfiás adatok alapján jelent meg közlemény.
Célkitűzés: Jelen vizsgálatunkban a coronariák eredési
rendellenességeinek gyakoriságát mértük fel intézetünk
coronaria-komputertomográfiás angiográfián átesett betegeinél.
Módszer: A coronaria-komputertomográfiás vizsgálatra került
betegek felvételeinek értékelésekor rögzítettük a coronariaanomália jelenlétét.
A vizsgálat indikációja általában mellkasi fájdalom volt. 128 szeletes
berendezést használtunk, a vizsgálatok során részben retrospektív, részben
prospektív EKG-kapuzást alkalmaztunk. Eredmények: 1751 beteg
komputertomográfiás angiográfiás felvételeit elemeztük. A betegek között a
férfiak aránya 38,4%, a vizsgálatra kerülők életkorának átlaga pedig 58,07 ±
11,07 év volt. Eredési anomáliát 1,83%-ban találtunk, ezen belül a leggyakoribb
volt a körbefutó ág (ramus circumflexus) és az elülső leszálló ág különálló
eredése a bal Valsalva-sinusból (1%). A további rendellenességek a következők
voltak: a jobb coronaria eredése magasan az aortából (0,34%), ramus circumflexus
a jobb sinusból vagy a jobb coronariából (0,34%), jobb coronaria a bal
Valsalva-sinusból (0,057%), elülső leszálló ág részben a bal Valsalva-sinusból a
circumflexustól külön, részben a jobb coronariából (kettős elülső leszálló ág,
0,057%). Következtetés: Mindössze 0,057%-ban fordult elő
potenciálisan tünetet okozó coronariaeredési rendellenesség (a bal sinusból
eredő jobb coronaria). A komputertomográfiás angiográfia segítségével a
coronariaeredés helye pontosan megállapítható, tisztázható az ér lefutása és
ennek során viszonya a környező struktúrákhoz. Orv Hetil. 2020; 161(47):
Summary.Introduction: Congenital coronary artery anomaly is defined as
a coronary morphology which occurs in less than 1% of the cases. Usually these
anomalies do not result in symptoms but sometimes they can cause chest pain,
syncope and sudden death. In Hungary, the prevalence of these abnormalities was
published only from data of invasive coronary angiography.
Objective: In this study, we evaluated the prevalence of
the anomalies of coronary origin in the patients of our institution undergoing
coronary computed tomography. Method: While reading the
computed tomography angiograms of our patients, we registered the presence of
coronary anomalies. In most of the cases, the indication of the coronary
computed tomography was chest pain. A scanner with 128 detectors was used, scans
were performed partly with prospective, partly with retrospective ECG gating.
Results: We assessed 1751 patients. The ratio of males was
38.4%, while the average age of patients 58.07 ± 11.07 years. Anomaly of
coronary origin was present in 1.83% of our patients, with the separate origin
of left anterior descending and left circumflex artery being the most frequent
(1%) among them. Other anomalies were as follows: high take-off of the right
coronary artery from the ascending aorta (0.34%), left circumflex arising from
the right sinus of Valsalva or from the right coronary (0.34%), right coronary
artery from the left sinus of Valsalva (0.057%), left anterior descending
arising partly from the left sinus of Valsalva, apart from the left circumflex,
partly from the right coronary (dual left anterior descending artery, 0.057%).
Conclusion: The prevalence of potentially symptomatic
coronary anomalies was only 0.057% in our series (right coronary from the left
sinus of Valsalva). The computed tomography angiography can precisely define the
origin of the coronary artery, depict its run-off and its relationship to the
neighbouring structures. Orv Hetil. 2020; 161(47): 1995–1999.