TY - JOUR A1 - Akimbekov, Nuraly S. A1 - Digel, Ilya A1 - O´Heras, C. A1 - Tastambek, K.T. A1 - Savitskaya, I.S. A1 - Ualyeva, P.S. A1 - Mansurov, Z.A. A1 - Zhubanova, A.A. T1 - Adsorption of bacterial lipopolysaccharides on carbonized rice husks obtained in the batch experiments JF - Experimental Biology N2 - The scope of this study is the measurement of endotoxin adsorption rate for carbonized rice husk. It showed good adsorption properties for LPS. During the batch experiments, several techniques were used and optimized for improving the material’s adsorption behavior. Also, with the results obtained it was possible to differentiate the materials according to their adsorption capacity and kinetic characteristics. KW - surface modification KW - adsorption KW - carbonized rice husk KW - lipopolysaccharide Y1 - 2014 SN - 1563-0218 N1 - Original in russischer Sprache VL - 60 IS - 1/2 SP - 144 EP - 148 PB - Al-Farabi Kazakh National University CY - Almaty ER - TY - JOUR A1 - Akimbekov, Nuraly S. A1 - Digel, Ilya A1 - Abdieva, Gulzhamal A1 - Ualieva, Perizat A1 - Tastambek, Kuanysh T1 - Lignite biosolubilization and bioconversion by Bacillus sp.: the collation of analytical data JF - Biofuels N2 - The vast metabolic potential of microbes in brown coal (lignite) processing and utilization can greatly contribute to innovative approaches to sustainable production of high-value products from coal. In this study, the multi-faceted and complex coal biosolubilization process by Bacillus sp. RKB 7 isolate from the Kazakhstan coal-mining soil is reported, and the derived products are characterized. Lignite solubilization tests performed for surface and suspension cultures testify to the formation of numerous soluble lignite-derived substances. Almost 24% of crude lignite (5% w/v) was solubilized within 14 days under slightly alkaline conditions (pH 8.2). FTIR analysis revealed various functional groups in the obtained biosolubilization products. Analyses of the lignite-derived humic products by UV-Vis and fluorescence spectrometry as well as elemental analysis yielded compatible results indicating the emerging products had a lower molecular weight and degree of aromaticity. Furthermore, XRD and SEM analyses were used to evaluate the biosolubilization processes from mineralogical and microscopic points of view. The findings not only contribute to a deeper understanding of microbe–mineral interactions in coal environments, but also contribute to knowledge of coal biosolubilization and bioconversion with regard to sustainable production of humic substances. The detailed and comprehensive analyses demonstrate the huge biotechnological potential of Bacillus sp. for agricultural productivity and environmental health. KW - humic acid KW - Bacillus sp KW - lignite KW - Biosolubilization Y1 - 2021 SN - 1759-7277 VL - 12 IS - 3 SP - 247 EP - 258 PB - Taylor & Francis CY - London ER - TY - JOUR A1 - Akimbekov, Nuraly A1 - Digel, Ilya A1 - Zhubanova, Azhar A1 - Tastambek, Kuanysh T. A1 - Tepecik, Atakan A1 - Sherelkhan, Dinara T1 - Biotechnological potentials of surfactants in coal utilization: a review JF - Environmental Science and Pollution Research N2 - The quest for scientifically advanced and sustainable solutions is driven by growing environmental and economic issues associated with coal mining, processing, and utilization. Consequently, within the coal industry, there is a growing recognition of the potential of microbial applications in fostering innovative technologies. Microbial-based coal solubilization, coal beneficiation, and coal dust suppression are green alternatives to traditional thermochemical and leaching technologies and better meet the need for ecologically sound and economically viable choices. Surfactant-mediated approaches have emerged as powerful tools for modeling, simulation, and optimization of coal-microbial systems and continue to gain prominence in clean coal fuel production, particularly in microbiological co-processing, conversion, and beneficiation. Surfactants (surface-active agents) are amphiphilic compounds that can reduce surface tension and enhance the solubility of hydrophobic molecules. A wide range of surfactant properties can be achieved by either directly influencing microbial growth factors, stimulants, and substrates or indirectly serving as frothers, collectors, and modifiers in the processing and utilization of coal. This review highlights the significant biotechnological potential of surfactants by providing a thorough overview of their involvement in coal biodegradation, bioprocessing, and biobeneficiation, acknowledging their importance as crucial steps in coal consumption. KW - Coal KW - Surfactants KW - Microorganisms KW - Biosolubilization KW - Biobeneficiation Y1 - 2024 U6 - https://doi.org/10.1007/s11356-024-34892-5 SN - 1614-7499 VL - 31 SP - 55099 EP - 55118 PB - Springer CY - Berlin ER - TY - CHAP A1 - Ajona, J. I. A1 - Herrmann, Ulf A1 - Sperduto, F. A1 - Farinha-Mendes, J. ED - Becker, Manfred T1 - Main Achievements within ARDISS (Advanced Receiver for Direct Solar Steam Production in Parabolic Trough Solar Power Plants) Project T2 - Components, tools, facilities and measurement techniques. - (Solar thermal concentrating technologies : proceedings of the 8th international symposium, October, 6 - 11, 1996, Köln, Germany ; Vol. 2) Y1 - 1996 SN - 3-7880-7616-X SP - 733 EP - 754 PB - Müller CY - Heidelberg ER - TY - JOUR A1 - Aimenova, Zh. E. A1 - Digel, Ilya A1 - Eshibaev, А. А. T1 - Dynamics of accumulation of lagochirzin in Lagochilus setulosus phytomass during the growing season and also features of its cultivation in the conditions of a typical sierozem JF - KazNU Bulletin. Biology series N2 - L.setulosus is offered for creation of biopreparation «Setulin», possesing he- mostatic action, the basic reactant of biopreparation is diterpen – lagochirzin. Results under the maintenance and dynamics of diterpen lagochirzin accumula- tion in various parts of L.setulosus are presented: in roots, stalks, leaves, flowers and calyx lobes during the growing season, and also results on conditions of cultivation L.setulosus in the conditions of a typical sierozem are resulted. From the obtained data is visible, that the given species of a plant is endemic. It is established, that dynamics of accumulation of lagochirzin in phytomass accrues from the beginning to the middle of the growing season. The chemical analysis of L.setulosus on a localization of lagochirzin in various organs of a plant, has shown, that the greatest quantity of lagochirzin collects in calyx lobes of the plants. Also it is established, that L.setulosus can be cultivated in the conditions of the typical sierozem, a mineral food is necessary for the given species of plants of Lagochilus genus, except nitric fertilizers. Comparative studying of wild-growing and cultural forms of L.setulosus has shown, that in the cultivated phytomass of plants the maintenance of lagochirzin on 17-20 % higher than in the wild-growing species. Y1 - 2016 SN - 1563-0218 N1 - Original in russischer Sprache VL - 69 IS - 4 SP - 4 EP - 11 PB - Al-Farabi Kazakh National University CY - Almaty ER - TY - CHAP A1 - Ahmed, H. A1 - Schlenkhoff, A. A1 - Bung, Daniel Bernhard T1 - Hydrodynamic characteristics of vertical slotted wall breakwaters T2 - Balance and uncertainty - water in a changing world : proceedings of the 34th IAHR world congress ; 33rd Hydrology and Water Resources Symposium ; 10th Conference on Hydraulics in Water Engineering ; 26 June - 1 July 2011, Brisbane, Australia Y1 - 2011 SN - 978-0-85825-868-6 SP - 1179 EP - 1186 ER - TY - JOUR A1 - Ahmed, Essam A1 - Reisgen, Uwe A1 - Schleser, Markus A1 - Mokrov, Oleg T1 - On formability of tailor laser welded blanks of DP/TRIP steel sheets JF - Science and technology of welding and joining N2 - This paper aims to evaluate the formability of tailor welded blanks of dual phase (DP600)/transformation induced plasticity (TRIP700) steel sheets. In this work, bead on plate butt joints of 2·5 mm DP600 and 1·2 mm TRIP700 steel sheets were performed using CO2 laser beam welding. Microhardness measurements and transverse tensile testing were carried out to characterise the welds. The formability of base metals and welds were investigated by standard Erichsen test. In a perpendicular tensile test to the weld line, all specimens were fractured at the TRIP base metal, and the strengths were somewhat higher than those of base metal. There was a significant reduction in formability caused by welding of the DP600/TRIP700 steel sheets, and the formability increased with increasing welding speed. Y1 - 2010 U6 - https://doi.org/10.1179/136217110X12731414739754 SN - 1743-2936 VL - 15 IS - 5 SP - 337 EP - 342 PB - Maney CY - Leeds ER - TY - CHAP A1 - Ahlbrink, Nils A1 - Alexopoulos, Spiros A1 - Andersson, Joel A. E. A1 - Belhomme, B. A1 - Teixeira Boura, Cristiano José A1 - Gall, Jan A1 - Hirsch, Tobias T1 - viCERP - the Virtual Institute of Central Receiver Power Plant T2 - MATHMOD 2009 - 6th Vienna International Conference on Mathematical Modelling : February 11 - 13, 2009, Vienna, Austria. ARGESIM Report. No. 35 Y1 - 2009 SN - 978-3-901608-35-3 PB - Elsevier CY - Amsterdam ER - TY - PAT A1 - Ahlborn, Kristina A1 - Gerlach, Frank A1 - Iken, Heiko A1 - Schöning, Michael Josef A1 - Vonau, Winfried T1 - Miniaturisierte, potentiometrische Indikatorelektrode und Verfahren zu deren Herstellung : Offenlegungsschrift Y1 - 2012 ER - TY - JOUR A1 - Agrafiotis, Christos C. A1 - Mavroidis, Ilias A1 - Konstandopoulos, Athansios G. A1 - Hoffschmidt, Bernhard A1 - Stobbe, Per A1 - Romero, Manuel A1 - Fernandez-Quero, Valerio T1 - Evaluation of porous silicon carbide monolithic honeycombs as volumetric receivers/collectors of concentrated solar radiation JF - Solar energy materials and solar cells Y1 - 2007 SN - 1879-3398 (E-Journal); 0927-0248 (Print) VL - Vol. 91 IS - Iss. 6 SP - 474 EP - 488 ER - TY - JOUR A1 - Aggeloussis, Nickos A1 - Giannakou, Erasmia A1 - Albracht, Kirsten A1 - Arampatzis, Adamantios T1 - Reproducibility of fascicle length and pennation angle of gastrocnemius medialis in human gait in vivo JF - Gait and Posture N2 - The purpose of the current study was to examine the reproducibility of fascicle length and pennation angle of gastrocnemius medialis while human walking. To the best of our knowledge, this is the first study of the reproducibility of fascicle length and pennation angle of gastrocnemius medialis in vivo during human gait. Twelve males performed 10 gait trials on a treadmill, in 2 separate days. B-mode ultrasonography, with the ultrasound probe firmly adjusted in the transverse and frontal planes using a special cast, was used to measure the fascicle length and the pennation angle of the gastrocnemius medialis (GM). A Vicon 624 system with three cameras operating at 120 Hz was also used to record the ankle and knee joint angles. The results showed that measurements of fascicle length and pennation angle showed high reproducibility during the gait cycle, both within the same day and between different days. Moreover, the root mean square differences between the repeated waveforms of both variables were very small, compared with their ranges (fascicle length: RMS = ∼3 mm, range: 38–63 mm; pennation angle: RMS = ∼1.5°, range: 22–32°). However, their reproducibility was lower compared to the joint angles. It was found that representative data have to be derived by a wide number of gait trials (fascicle length ∼six trials, pennation angle more than 10 trials), to assure the reliability of the fascicle length and pennation angle in human gait. Y1 - 2010 U6 - https://doi.org/10.1016/j.gaitpost.2009.08.249 SN - 0966-6362 VL - 31 IS - 1 SP - 73 EP - 77 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Aggarwal, Prerna A1 - Singh, Virendra A1 - Singh, Arjun A1 - Scherer, Ulrich W. A1 - Singh, Tejvir A1 - Singla, Madan L. A1 - Srivastava, Alok T1 - Physico-chemical transformations in swift heavy ion modified poly(ethyleneterephthalate) JF - Radiation Physics and Chemistry Y1 - 2011 SN - 0969-806X N1 - In Press, Accepted Manuscript SP - 1 EP - 28 PB - Pergamon Press CY - Oxford ER - TY - JOUR A1 - Aggarwal, Pranav A1 - Dhiman, Shashi K. A1 - Kumar, G. A1 - Scherer, Ulrich W. A1 - Singla, M. L. A1 - Srivastava, Alok T1 - Optical study of poly(ethyleneterephthalate) modified by different ionizing radiation dose JF - Indian Journal of Pure and Applied Physics N2 - Thin films of poly(ethyleneterephthalate) [PET]were exposed to radiation dose ranging from 10 to 30 kGy by using gamma rays in the range 12.8-177.8 MGy using swift light ions of hydrogen. There was no effect of the radiation dose on the optical behaviour of PET as a result of exposure to radiation dose up to 30 kGy brought about by gamma rays but a significant decrease in the optical band gap values was observed when PET was exposed to swift light ions of hydrogen. The data obtained are discussed in terms of optical studies carried out on PET using swift heavy ions. Y1 - 2012 SN - 0019-5596 VL - 50 IS - 2 SP - 129 EP - 132 PB - Council Of Scientific And Industrial Research (CSIR), National Institute Of Science Communication and Policy Research (NIScPR) CY - New Delhi ER - TY - CHAP A1 - Adomeit, G. A1 - Willms, Herbert ED - Skupinski, Edwin T1 - Experimental investigation of the acceleration of deflagration in wake flow T2 - Safety of thermal water reactors : proceedings of a Seminar on the Results of the European Communities’ Indirect Action Research Programme on Safety of Thermal Water Reactors, held in Brussels, 1–3 October 1984 / Commission of the European Communities Y1 - 1984 SN - 0-86010-678-0 SN - 978-94-009-4972-0 (Online-Nachdr. vom Springer-Verl.) N1 - Forschungsvorhaben Nr. 024 SRD SP - 294 EP - 304 PB - Graham & Trotman [u.a.] CY - London Gaithersburg, Md. ER - TY - RPRT A1 - Adomeit, G. A1 - Willms, Herbert T1 - Experimental investigation of the acceleration of deflagration in wake flow : final report. - (Euratom-publications-EUR ; 9593 : Nuclear science and technology) Y1 - 1984 SN - 92-825-4699-3 PB - Commission of the European Communities CY - Luxembourg ER - TY - RPRT A1 - Adler, J. A1 - Heymer, H. A1 - Richter, H. J. A1 - Fend, Th. A1 - Smirnova, O. A1 - Rietbrock, P. A1 - Petchenko, A. A1 - Issendorff, F. v. A1 - Steven, M. A1 - Trimis, D. A1 - Gonsior, Daniel A1 - Helsper, Christoph A1 - Hoffschmidt, Bernhard T1 - INNOTRAP - innovative Rußfilter für LKW-Dieselmotoren : Abschlussbericht Förderkennzeichen 16IN0313 Y1 - 2009 ER - TY - CHAP A1 - Adenacker, J. A1 - Gerhards, Benjamin A1 - Otten, Christian A1 - Schleser, Markus T1 - Laserstrahlschweißen von Aluminium-Kupfer-Werkstoffkombinationen für die Elektromobilität T2 - DVS CONGRESS 2021 Y1 - 2021 SN - 978-3-96144-146-4 N1 - DVS CONGRESS 2021, 14. – 17. September 2021, Essen. Große Schweißtechnische Tagung 2021, DVS CAMPUS 2021. DVS Berichte, Band: 371 SP - 31 EP - 38 PB - DVS Media GmbH CY - Düsseldorf ER - TY - JOUR A1 - Adels, Klaudia A1 - Thönnessen, Vera A1 - Monakhova, Yulia T1 - Complementary instrumental techniques applied to pain relieving tablets in an undergraduate laboratory experiment JF - Journal of Chemical Education N2 - Several unconnected laboratory experiments are usually offered for students in instrumental analysis lab. To give the students a more rational overview of the most common instrumental techniques, a new laboratory experiment was developed. Marketed pain relief drugs, familiar consumer products with one to three active components, namely, acetaminophen (paracetamol), acetylsalicylic acid (ASA), and caffeine, were selected. Common analytical methods were compared regarding the performance of qualitative and quantitative analysis of unknown tablets: UV–visible (UV–vis), infrared (IR), and nuclear magnetic resonance (NMR) spectroscopies, as well as high-performance liquid chromatography (HPLC). The students successfully uncovered the composition of formulations, which were divided into three difficulty categories. Students were shown that in addition to simple mixtures handled in theoretical classes, the composition of complex drug products can also be uncovered. By comparing the performance of different techniques, students deepen their understanding and compare the efficiency of analytical methods in the context of complex mixtures. The laboratory experiment can be adjusted for graduate level by including extra tasks such as method optimization, validation, and 2D spectroscopic techniques. KW - Instrumental analysis KW - Spectroscopy KW - Liquid chromatography KW - Qualitative and quantitative determination KW - Drugs Y1 - 2024 U6 - https://doi.org/10.1021/acs.jchemed.4c00681 SN - 0021-9584 (Print) SN - 1938-1328 (Online) PB - ACS ER - TY - CHAP A1 - Adams, Moritz A1 - Losekamm, Martin J. A1 - Czupalla, Markus T1 - Development of the Thermal Control System for the RadMap Telescope Experiment on the International Space Station T2 - International Conference on Environmental Systems Y1 - 2020 N1 - 2020 International Conference on Environmental Systems, 12. Juli 2020 – 16. Juli 2020, Lissabon SP - 1 EP - 10 ER - TY - THES A1 - Ackermann, Vincent T1 - Filos : Design eines Front-Ends für das robotergeführte Laser-Osteotom-System STELLA. N2 - In der Abschlussarbeit „FILOS“ wurde in Zusammenarbeit mit dem Fraunhofer-Institut für Lasertechnik (ILT) ein Front-End für das laserbasierte Osteotom STELLA entwickelt. STELLA soll Kraniotomie (das Eröffnen des Schädels) im wachen Zustand ermöglichen und erfordert eine benutzerfreundliche Bedienungsplattform sowie ein funktionales und ästhetisches Design. Das Ziel von „FILOS“ war es, ein Gehäuse zu entwerfen, das den medizinischen Anforderungen entspricht, und ein Bedienkonzept zu entwickeln, dass die Akzeptanz bei Patient:innen und Anwender:innen fördert. Durch Expert:innen-Interviews mit Neurochirurg:innen und enge Zusammenarbeit mit dem ILT wurde ein durchdachtes Design entwickelt. Dieses soll den Anforderungen der Anwender:innen gerecht werden, das zukünftige Operationssystem repräsentieren und somit einen Mehrwert in der Medizin schaffen. KW - Wachoperation KW - Laserchirurgie KW - Medizintechnik KW - Cobot KW - Industrial Design Y1 - 2024 N1 - Für diese Arbeit steht kein Volltext zur Verfügung. PB - FH Aachen CY - Aachen ER -