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242. Oljka, sušne razmere, tla in deficitno namakanjeMaja Podgornik, Jakob Fantinič, Milena Bučar-Miklavčič, Vasilij Valenčič, Bojan Butinar, Dominik Vodnik, Helena Gramc, Damijana Kastelec, Mitja Ferlan, Marina Pintar, 2022, znanstvena monografija Povzetek: Monografija obsega pregled znanja na področju prilagoditve oljk na sušne razmere ter pregled tehnologij namakanja oljk. Res je, da je oljka manj zahtevna vrsta, saj lahko uspeva v izjemno skeletnih tleh in je zelo dobro prilagojena na pomanjkanje vode v njih, a kljub fiziološkim prilagoditvam, lahko sušne razmere negativno vplivajo na rast, razvoj in pridelek oljk. Sušni stres lahko pri oljkah blažimo z deficitnim namakanjem. Deficitni način namakanja je oblika nadgradnje namakanja, saj z nadzorovanim primanjkljajem vode zagotovimo kakovost pridelka, obstoj rastline ter hkrati zmanjšamo porabo vode in energije. Deficitni način namakanja, temelji na načelu, da obrok vode dodamo takrat, ko ga rastlina najbolj gospodarno uporabi. Pri tem je ključnega pomena poznavanje rastlinske vrste, njenih anatomskih in morfoloških značilnosti, fizioloških prilagoditev na sušo, biokemijski odziv na stresne dejavnike in s tem vpliv na kakovost plodov in olja. Poleg tega je potrebno tudi poznavanje dejavnikov, ki vplivajo na pridelovalne sposobnosti oljk, kot so lastnosti tal s svojimi vodno zadrževalnimi sposobnostmi ter dostopna voda v tleh. Ob skrbnem upoštevanju potreb rastline in okoljskih razmer z ustreznim delovanjem namakalnega sistema lahko dosežemo usklajeno razmerje med kakovostjo in količino pridelka o hkratnem varovanju potencialov naravnih virov.
Objavljeno v DiRROS: 14.06.2022; Ogledov: 797; Prenosov: 500
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244. Water versus oil lubrication of laser-textured Ti6Al4V alloy upon addition of MoS2 nanotubes for green tribologyMarjetka Conradi, Bojan Podgornik, Aleksandra Kocijan, Maja Remškar, Damjan Klobčar, 2022, izvirni znanstveni članek Ključne besede: green tribology, surface texturing, MoS2 nanotubes, lubrication, Ti6Al4V alloy
Objavljeno v DiRROS: 06.05.2022; Ogledov: 543; Prenosov: 175
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245. Tissue flossing around the thigh does not provide acute enhancement of neuromuscular functionArmin Paravlić, Jure Segula, Kristina Drole, Vedran Hadžić, Maja Pajek, Janez Vodičar, 2022, izvirni znanstveni članek Povzetek: Nowadays, various methods are used for acute performance enhancement. The most recent of these is tissue flossing, which is becoming increasingly popular for both performance enhancement and rehabilitation. However, the effects of flossing on athletic performance have not been clearly demonstrated, which could be due to differences in the methodology used. In particular, the rest periods between the end of the preconditioning activity and the performance of the criterion task or assessment tools varied considerably in the published literature. Therefore, the present study aimed to investigate the effects of applying tissue flossing to the thigh on bilateral countermovement jump performance and contractile properties of vastus lateralis (VL) muscle. Nineteen recreational athletes (11 males; aged 23.1 ± 2.7 years) were randomly assigned to days of flossing application (3 sets for 2 min of flossing with 2 min rest between sets) with preset experimental pressure (EXP = 95 ± 17.4 mmHg) or control condition (CON = 18.9 ± 3.5 mmHg). The first part of the measurements was performed before and after warm-up consisting of 5 min of cycling followed by dynamic stretching and specific jumping exercises, while the second part consisted of six measurement points after flossing application (0.5, 3, 6, 9, 12, 15 min). The warm-up improved muscle response time (VL = -5%), contraction time (VL = -3.6%) muscle stiffness (VL = 17.5%), contraction velocity (VL = 23.5%), jump height (13.9%) and average power (10.5%). On the contrary, sustain time, half-relaxation time and take-off velocity stayed unaltered. Flossing, however, showed negative effects for muscle response time (F = 18.547, p < 0.001), contraction time (F = 14.899, p < 0.001), muscle stiffness (F = 8.365, p < 0.001), contraction velocity (F = 11.180, p < 0.001), jump height (F = 14.888, p < 0.001) and average power (F = 13.488, p < 0.001), whereas sustain time, half-relaxation time and take-off velocity were unaffected until the end of the study protocol regardless of condition assigned and/or time points of the assessment. It was found that the warm-up routine potentiated neuromuscular function, whereas the flossing protocol used in the current study resulted in fatigue rather than potentiation. Therefore, future studies aimed to investigate the doseresponse relationship of different configurations of preconditioning activities on neuromuscular function are warranted.
Ključne besede: tensiomyography, countermovement jump, potentation, athletic performance, ischemic precoditioning, functional performance
Objavljeno v DiRROS: 03.05.2022; Ogledov: 613; Prenosov: 422
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246. New records and noteworthy data of plants, algae and fungi in SE Europe and adjacent regions, 7Marko S. Sabovljević, Gordana Tomović, Predrag Lazarević, Maja Lazarević, Snežana Vukojičić, Snežana Vukojičić, Ivana Trbojević, Jovana Pantović, Simona Strgulc-Krajšek, Darja Kopitar, Uroš Buzurović, Sanja Z. Djurović, Lado Kutnar, Janez Kermavnar, Zbigniew Szeląg, Petya Boycheva, Dobri Ivanov, Milorad Veljković, Vladan Djordjević, Sorin Stefanut, Constantin-Ciprian Bîrsan, 2022, izvirni znanstveni članek Povzetek: his paper presents new records and noteworthy data on the following taxa in SE Europe and adjacent regions: stonewort Chara intermedia, liverworts Fossombronia wondraczekii and Pseudomoerckia blyttii, mosses Hamatocaulis vernicosus and Hookeria lucens, monocots Gladiolus palustris, Neotinea tridentata, and Orchis militaris and dicots Cardamine serbica, Cardamine waldsteinii, Hieracium kotschyanum and Pilosella petraea are given within SE Europe and adjacent regions.
Ključne besede: new report, Cardamine serbica, Cardamine waldsteinii, Chara intermedia, Gladiolus palustris, Fossombronia wondraczekii, Hamatocaulis vernicosus, Hieracium kotschyanum, Hookeria lucens, Neotinea tridentata, Orchis militaris, Pilosella petraea, Pseudomoerckia blyttii, SE Europe
Objavljeno v DiRROS: 20.04.2022; Ogledov: 588; Prenosov: 436
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