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In situ synthesis of potassium tungstophosphate supported on BEA zeolite and perspective application for pesticide removal

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Journal of Environmental Sciences 2019年第7期31卷 136-147页

作者： bojana nedic vasiljevic Milena Obradovic Danica Bajuk-Bogdanovic Maja Milojevic-Rakic Zoran Jovanovic Nemanja Gavrilov Ivanka Holclajtner-Antunovic Faculty of Physical Chemistry University of Belgrade Belgrade 11158 Serbia Laboratory of Physics Vin?a Institute of Nuclear Sciences University of Belgrade Belgrade 11001 Serbia

Potassium tungstophosphate is supported on BEA zeolite by in situ synthesis for glyphosate removal. Spectroscopic measurements identified hydrogen bonding as a primal interaction of potassium salt and BEA zeolite. Composites are evaluated for glyphosate herbicide removal and adsorption process is analyzed using two isotherm models. Obtained adsorption capacities for all prepared composites lay between 45.2 and 92.2 mg of glyphosate per gram of investigated composite. Suspension acidity revealed that glyphosate is adsorbed mainly in the zwitter-ion form at the composite surface while the amount of potassium salt in the composites is crucial for the adsorption application. Exceptional adsorption behavior is postulated to come from a high degree of homogeneity among surface active sites which is confirmed by different experimental methods. Temperature programmed desorption of glyphosate coupled with mass spectrometer detected one broad, high-temperature peak which represents overlapped desorption processes from active sights of similar *** of potassium tungstophosphate affects active sites present in BEA zeolite for glyphosate desorption and significantly increases the amount of adsorbed pesticide in comparison to BEA zeolite. Supporting of potassium tungstophosphate on BEA zeolite via in situ synthesis procedure enables the formation of highly efficient adsorbents and revealed their perspective environmental application.

关键词： Composite materials Chemical synthesis Kinetics Adsorption Ultrasonics

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Structural changes of proteins in liver cirrhosis and consequential changes in their function

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World Journal of Gastroenterology 2022年第29期28卷 3780-3792页

作者： Nikola Gligorijevic Simeon Minic Olgica nedic Department of Metabolism University of Belgrade-Institute for the Application of Nuclear EnergyBelgrade 11080S Centre of Excellence for Molecular Food Sciences and Department of Biochemistry University of Belgrade-Faculty of ChemistryBelgrade 11000Serbia

The liver is the site of synthesis of the majority of circulating *** initial polypeptide synthesis,sophisticated machinery is involved in the further processing of proteins by removing parts of them and/or adding functional groups and small molecules tailoring the final molecule to suit its physiological *** modifications(PTMs)design a network of molecules with the common protein ancestor but with slightly or considerably varying activity/localization/*** can change under pathological conditions,giving rise to aberrant or overmodified *** changes in the structure of proteins most often accompany undesired changes in their function,such as reduced activity or the appearance of new *** protein processing is essential for the reactions in living beings and crucial for the overall quality *** that occur on proteins synthesized in the liver whose PTMs are cirrhosis-related are oxidation,nitration,glycosylation,acetylation,and *** of them predominantly affect proteins that remain in liver cells,whereas others predominantly occur on proteins that leave the liver or originate from other tissues and perform their function in the *** PTMs of certain proteins are potential candidates as biomarkers of liver-related diseases,including *** review will focus on PTMs on proteins whose structural changes in cirrhosis exert or are suspected to exert the most serious functional consequences.

关键词： Liver cirrhosis Post-translational modifications Circulation Protein function Protein structure Chronic liver disease

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Preparatory training attenuates drastic response of the insulin-like growth factor binding protein 1 at the point of maximal oxygen consumption in handball players

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Journal of Sport and Health Science 2017年第3期6卷 372-377页

作者： Olgica nedic Milos Sunderic Goran Miljus Zoran Valdevit Vladimir Jakovljevic Marija Glibetic Vesna Vucic Institute for the Application of Nuclear Energy University of BelgradeBelgrade 11080Serbia Faculty of Sport and Physical Education University of BelgradeBelgrade 11000Serbia Department of Physiology Faculty of Medical SciencesUniversity of KragujevacKragujevac 34000Serbia Centre of Research Excellence in Nutrition and Metabolism Institute for Medical ResearchUniversity of BelgradeBelgrade 11000Serbia

Background:Intensive exercise changes physiological need for glucose and several biochemical pathways responsible for its metabolism *** them are those which involve insulin,insulin-like growth factor(IGF-1),and IGF-binding proteins(IGFBPs).Different types and degrees of exercise,as well as an athlete's fitness,may induce a range of responses regarding concentrations and time needed for the *** idea of the work was to find out whether and how insulin/IGF axis responds to additional physical activity in the already trained subjects and if so,is the adaptation potentially beneficial from the aspect of metabolic ***:The effect of 4-week intensive training on campus(preparatory training) on the levels of insulin,IGF-1,and IGFBPs during maximal progressive exercise test(MPET) on a treadmill was compared to the results obtained during MPET conducted after a regular training season of a female elite handball team(n = 17,age:17 ± 1 years,height:171 ± 8 cm,weight:65 ± 8 kg,body mass index:22 ± 1 kg/m^2 at the beginning of the study;there were no significant changes at the end).Serum samples were obtained from players immediately before the test(basal),at the end of the test after reaching the point of maximal oxygen consumption(VO_(2max)),and after ***:The concentration of insulin decreased at VO_(2max),but remained higher in players after preparatory training(12.2 ± 2.5 m U/L vs.8.9 ± 4.4 m U/L,p = 0.049).The level of IGFBP-1 decreased in players at VO_(2max) in either case of training,but it remained much higher in tests performed after the preparatory regime than before(p = 0.029).Concentrations of IGF-1,IGFBP-2,-3,and-4 did not change ***:The inverse relation between insulin and IGFBP-1 was lost during MPET,as these 2 molecules changed in the same *** results obtained suggest less severe stress-induced depression of insulin and IGFBP-1 after preparatory *** another metabolic mechanism

关键词： Female IGF-binding proteins(IGFBPs) Insulin Insulin-like growth factor I(IGF-1) Progressive exercise test VO_(2max)

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Performance and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 TeV with the ATLAS detector

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Chinese Physics C 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott K. Abeling N.J. Abicht S.H. Abidi A. Aboulhorma H. Abramowicz H. Abreu Y. Abulaiti B.S. Acharya C. Adam Bourdarios L. Adamczyk S.V. Addepalli M.J. Addison J. Adelman A. Adiguzel T. Adye A.A. Affolder Y. Afik M.N. Agaras J. Agarwala A. Aggarwal C. Agheorghiesei A. Ahmad F. Ahmadov W.S. Ahmed S. Ahuja X. Ai G. Aielli A. Aikot M. Ait Tamlihat B. Aitbenchikh I. Aizenberg M. Akbiyik T.P.A. Åkesson A.V. Akimov D. Akiyama N.N. Akolkar K. Al Khoury G.L. Alberghi J. Albert P. Albicocco G.L. Albouy S. Alderweireldt M. Aleksa I.N. Aleksandrov C. Alexa T. Alexopoulos F. Alfonsi M. Algren M. Alhroob B. Ali H.M.J. Ali S. Ali S.W. Alibocus M. Aliev G. Alimonti W. Alkakhi C. Allaire B.M.M. Allbrooke J.F. Allen C.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso C. Alpigiani M. Alvarez Estevez A. Alvarez Fernandez M. Alves Cardoso M.G. Alviggi M. Aly Y. Amaral Coutinho A. Ambler C. Amelung M. Amerl C.G. Ames D. Amidei S.P. Amor Dos Santos K.R. Amos V. Ananiev C. Anastopoulos T. Andeen J.K. Anders S.Y. Andrean A. Andreazza S. Angelidakis A. Angerami A.V. Anisenkov A. Annovi C. Antel M.T. Anthony E. Antipov M. Antonelli F. Anulli M. Aoki T. Aoki J.A. Aparisi Pozo M.A. Aparo L. Aperio Bella C. Appelt A. Apyan N. Aranzabal S.J. Arbiol Val C. Arcangeletti A.T.H. Arce E. Arena J-F. Arguin S. Argyropoulos J.-H. Arling O. Arnaez H. Arnold G. Artoni H. Asada K. Asai S. Asai N.A. Asbah J. Assahsah K. Assamagan R. Astalos S. Atashi R.J. Atkin M. Atkinson H. Atmani P.A. Atmasiddha K. Augsten S. Auricchio A.D. Auriol V.A. Austrup G. Avolio K. Axiotis G. Azuelos D. Babal H. Bachacou K. Bachas A. Bachiu F. Backman A. Badea P. Bagnaia M. Bahmani A.J. Bailey V.R. Bailey J.T. Baines L. Baines O.K. Baker E. Bakos D. Bakshi Gupta V. Balakrishnan R. Balasubramanian E.M. Baldin P. Balek E. Ballabene F. Balli L.M. Baltes W.K. Balunas J. Balz E. Banas M. Bandieramonte A. Bandyopadhyay S. Bansal L. Barak M. Barakat E.L. Barberio D. Barberis M. Barbero M.Z. Barel K.N. Barends T. Barillari M-S. Barisits T. Barklow P. Baron D.A. Baron Mo The ATLAS Collaboration

The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron Collider,as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS Collaboration,using √s=13 TeV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the ATLAS *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points.

关键词： ATLAS JET QUARK GLUON TAGGING

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