Gotowe bibliografie tematyczne / Absorbeur mini

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Gotowa bibliografia na temat „Absorbeur mini”

Autor: Grafiati

Data publikacji: 21 grudnia 2024

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Artykuły w czasopismach na temat "Absorbeur mini"

Tijing, Leonard, John Ryan Dizon i Gil Cruz Jr. "3D-Printed Absorbers for Solar-Driven Interfacial Water Evaporation: A Mini-Review". Advance Sustainable Science, Engineering and Technology 3, nr 1 (30.04.2021): 0210103. http://dx.doi.org/10.26877/asset.v3i1.8367.

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Solar-driven interfacial water evaporation (SWE) is considered as a promising sustainable solution for clean water production especially for remote and off-grid communities. Various approaches have been developed in the last decade to improve the evaporation and thermal efficiency of the system, and to make it more robust for long-term operation. In recent years, 3D printing has emerged as an attractive method to fabricate simple and complex absorber geometries for SWE. In this mini-review, we present the new developments of 3D-printed solar absorbers including the various designs, fabrication strategies, challenges and opportunities. This study hopes to provide more insights into the use of additive manufacturing for improving the absorber design and performance of SWE.

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Chintalapudi, Ravikiran, Sidda Reddy B, Siva Rama Krishna V, Sundeep Moyya, Shaik Hussain i Ujwala Sriram. "Effect of Vibration Control Mechanisms on the Vibrational Behavior of Al 6061/SiC Composite Beam". MATEC Web of Conferences 405 (2024): 02003. http://dx.doi.org/10.1051/matecconf/202440502003.

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A machine in action in a plant mine or other mechanical system is a major source of vibrations that spread from foundation and across the surrounding area. There should be the least amount of vibrations possible. The vibrations must be isolated, absorbed, or dampened in order to do this. This study investigates how an oil damper and various types of vibration isolators affect vibration frequency of a stir cast composite beam made up of 90% Al6061 and 10% SiC to examine the influence of an oil damper well, as single and double absorbers on the vibration frequency of a stir cast composite beam. Investigating the frequencies on the Vibration Fundamental Trainer under fixed-hinged, hinged-hinged, and fixed-free boundary conditions. The experiments were carried out on the constructed composite beam. The results indicate that the absorbers vibration amplitudes decrease, along with the damper and isolators effects. Absorber and isolator frequencies observed were lower, than the frequency. Increased beam holes resulted in decreased stiffness and reduced frequencies. Compared to scenarios the frequencies were higher when the beam had fixed end conditions without holes. When compared to absorbers and isolators, oil dampers have more effectively decreased vibrations.

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Rakasiwi, Rinjani, Syaifurrahman Syaifurrahman, Wivina Diah I i Usman A. Gani. "KAJIAN EFISIENSI PANAS KOLEKTOR PEMANAS AIR SURYA PADA MOBILE MINI BIODIESEL PLANT". Jurnal Rekayasa Mesin 13, nr 3 (31.12.2022): 795–804. http://dx.doi.org/10.21776/jrm.v13i3.1209.

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Integration of solar water heating system and biodiesel unit process has resulted a prototype called Mini Biodiesel Plant. The key of that unit is the effectiveness of heat transfer that occured in the solar collector. The purpose of this research is to analyze the performance of the collector from the solar water heating system. The solar collector used is a flat plate type with a surface area of 0.7m2. It consists of a glass cover, alummunium absorber, styrofoam insulator and woof frame. Based on the research result for 5 times for 5 hours each day, the highest of intensity of solar radiation (I) was 859 W/m2 can produce maximum hot water (Ta) of 62oC. The average of real heat has been absorbes by teh collector (Qu) was 271 Watt while the maximum of heat loss (Qloss) was 144.6 Watt therefore the average of collector efficiency (ƞ) was 45.1%.

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Itoh, Daisuke, Toru Misawa, Takashi Horiuchi i Kentaro Aoki. "Search for intrinsic NALs in BAL/mini-BAL quasar spectra". Monthly Notices of the Royal Astronomical Society 499, nr 3 (21.09.2020): 3094–110. http://dx.doi.org/10.1093/mnras/staa2793.

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ABSTRACT Some fraction of narrow absorption lines (NALs) are physically associated to the quasar/host-galaxy materials (i.e. intrinsic NALs) like those of broad absorption lines (BALs) and mini-BALs. The relation between these three types of absorption lines has not been understood yet, however one interpretation is that these absorption features correspond to different inclination angles. In this study, we search for intrinsic NALs in 11 BAL/mini-BAL quasar spectra retrieved from VLT/UVES public archive, in order to test a possible relation of intrinsic NALs and BALs/mini-BALs in the geometry models. We use partial coverage analysis to separate intrinsic NALs from ones which are associated to cosmologically intervening materials like foreground galaxies and intergalactic medium (i.e. intervening NALs). We identify one reliable and two possible intrinsic NAL systems out of 36 NAL systems in 9 BAL/mini-BAL quasar spectra after removing two quasars without clear BAL features. In spite of a small sample size, we placed a lower limit on the fraction of BAL/mini-BAL quasars that have at least one intrinsic C iv NAL ($\sim 33^{+33}_{-18}{{\ \rm per\ cent}}$). This can be interpreted that intrinsic NAL absorbers exist everywhere regardless of inclination angle. We found that one of the intrinsic NAL systems detected in SDSS J121549.80−003432.1 is located at a large radial distance of R > 130 kpc, using a method of photoionization model with ground/excited-state lines. Considering the wide range of intrinsic NAL absorber distribution in inclination angles and radial distances, it suggests that origins and geometry of them are more complicated than we expected.

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Zhang, Zeng Zhi, Na Gu i Ji Fei Zhang. "The Application of Aqueous Span 80 Composite Material in Methane Absorption and Explosion Suppression". Materials Science Forum 610-613 (styczeń 2009): 125–29. http://dx.doi.org/10.4028/www.scientific.net/msf.610-613.125.

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This paper aims to design a sort of aqueous atomization absorbing material which can absorb mine gas under coal mine to decrease the methane concentration and reduce the explosion hazard. The material was composed of water as matrix, Span 80 as methane absorbent, and inorganic salt as additive. Methane the main component of mine gas was used as model of mine gas. The influence of concentration of inorganic salt on absorption and the effect of different compound materials made of Span 80 and inorganic salt on absorption were studied using Head Space Gas Chromatography to determine the content of methane absorbed. Explosion chamber was used as experiment system to simulate mine gas explosion. The explosion suppression effects of absorbing materials were studied preliminarily in explosion chamber using the maximum explosion pressure and residual methane content after explosion as parameters. The results indicate that the absorbing material can absorb more methane than water and can partly inhibit the explosion of the mixture of methane and air.

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ASTE, Patrik, Eric BRANDãO, Jacques CUENCA, Mélanie NOLAN, U. Peter SVENSSON i Elias ZEA. "Experimental validity of using a ResNet to predict sound absorption coefficients of finite samples". INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, nr 3 (4.10.2024): 7999–8005. http://dx.doi.org/10.3397/in_2024_4035.

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The validity of using a neural network to predict sound absorption coefficients of finite porous materials is tested with experimental data with a flush-mounted glass wool sample on a baffle. The network is pre-trained and validated with numerical simulations of flushed-mounted finite absorbers using a Delany-Bazley-Miki model. The experimental setup consists of a 12 x 12 microphone array placed above the absorber and a sound source placed at angles of 0, 40, and 75 degrees with respect to the normal of the sample. The sound absorption coefficients predicted at normal incidence by the network are compared with the impedance tube method as a reference result.

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Joe, Jemee, Hyunwoo Yang, Changdeuck Bae i Hyunjung Shin. "Metal Chalcogenides on Silicon Photocathodes for Efficient Water Splitting: A Mini Overview". Catalysts 9, nr 2 (2.02.2019): 149. http://dx.doi.org/10.3390/catal9020149.

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In the photoelectrochemical (PEC) water splitting (WS) reactions, a photon is absorbed by a semiconductor, generating electron-hole pairs which are transferred across the semiconductor/electrolyte interface to reduce or oxidize water into oxygen or hydrogen. Catalytic junctions are commonly combined with semiconductor absorbers, providing electrochemically active sites for charge transfer across the interface and increasing the surface band bending to improve the PEC performance. In this review, we focus on transition metal (di)chalcogenide [TM(D)C] catalysts in conjunction with silicon photoelectrode as Earth-abundant materials systems. Surprisingly, there is a limited number of reports in Si/TM(D)C for PEC WS in the literature. We provide almost a complete survey on both layered TMDC and non-layered transition metal dichalcogenides (TMC) co-catalysts on Si photoelectrodes, mainly photocathodes. The mechanisms of the photovoltaic power conversion of silicon devices are summarized with emphasis on the exact role of catalysts. Diverse approaches to the improved PEC performance and the proposed synergetic functions of catalysts on the underlying Si are reviewed. Atomic layer deposition of TM(D)C materials as a new methodology for directly growing them and its implication for low-temperature growth on defect chemistry are featured. The multi-phase TM(D)C overlayers on Si and the operation principles are highlighted. Finally, challenges and directions regarding future research for achieving the theoretical PEC performance of Si-based photoelectrodes are provided.

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Tandangi, Rahmayani, Jamaluddin Jamaluddin i Lahming Lahming. "Modifikasi Lemari Pendingin Mini untuk Mendinginkan Buah Pisang Menggunakan Pasir sebagai Absorben Kalor". Jurnal Pendidikan Teknologi Pertanian 5, nr 2 (10.02.2020): 91. http://dx.doi.org/10.26858/jptp.v5i2.9937.

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Penelitian ini bertujuan untuk mengetahui proses perancangan lemari pendingin mini untuk mendinginkan buah pisang menggunakan pasir sebagai absorben kalor dan unjuk kerja pada lemari pendingin hasil rancangan menggunakan pasir sebagai absorben kalor. Bentuk penelitian ini adalah modifikasi alat. Data penelitian diperoleh dari hasil pengujian alat dengan cara melakukan uji coba perbandingan antara penyimpanan pada suhu lemari dan suhu ruang. Modifikasi alat lemari pendingin mini menggunakan pasir sebagai absorben kalor dirancang untuk mengurangi dampak pemanasan global akibat penggunaan freon dan memperlambat proses kerusakan pada buah. Teknik analisis data dilakukan secara kuantitatif dengan statistik deskriftif. Hasil penelitian menunjukkan bahwa suhu yang ada pada lemari yaitu 24°C.

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Kurniawati, Ischia, i Yonmo Sung. "A Review of Heat Dissipation and Absorption Technologies for Enhancing Performance in Photovoltaic–Thermal Systems". Energies 17, nr 7 (3.04.2024): 1721. http://dx.doi.org/10.3390/en17071721.

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With the growing demand for photovoltaic (PV) systems as a source of energy generation that produces no greenhouse gas emissions, effective strategies are needed to address the inherent inefficiencies of PV systems. These systems typically absorb only approximately 15% of solar energy and experience performance degradation due to temperature increases during operation. To address these issues, PV–thermal (PVT) technology, which combines PV with a thermal absorber to dissipate excess heat and convert it into additional thermal energy, is being rapidly developed. This review presents an overview of various PVT technologies designed to prevent overheating in operational systems and to enhance heat transfer from the solar cells to the absorber. The methods explored include innovative absorber designs that focus on increasing the heat transfer contact surface, using mini/microchannels for improved heat transfer contiguity, and substituting traditional metal materials with polymers to reduce construction costs while utilizing polymer flexibility. The review also discusses incorporating phase change materials for latent heat absorption and using nanofluids as coolant mediums, which offer higher thermal conductivity than pure water. This review highlights significant observations and challenges associated with absorber design, mini/microchannels, polymer materials, phase change materials, and nanofluids in terms of PV waste heat dissipation. It includes a summary of relevant numerical and experimental studies to facilitate comparisons of each development approach.

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Bess, John D., Gray S. Chang, Patrick Moo i Julie Foster. "Mini-Reactor Proliferation-Resistant Fuel with Burnable Gadolinia in Once-Through Operation Cycle Performance Verification". Journal of Nuclear Engineering 5, nr 3 (28.08.2024): 318–29. http://dx.doi.org/10.3390/jne5030021.

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A miniature nuclear reactor is desirable for deployment as a localized nuclear power station in support of a carbon-free power supply. Coupling aspects of proliferation-resistant fuel with natural burnable absorber loading are evaluated for once-through operation cycle performance to minimize the need for refueling and fuel shuffling operations. The incorporation of 0.075 wt.% 237Np provides favorable plutonium isotopic vectors throughout an operational lifetime of 5.5 years. providing 35 MWe. Core performance was assessed using a verification-by-comparison approach for core designs with or without 237Np and/or gadolinia burnable absorber. Burnup Monte Carlo calculations were performed via MCOS coupling of MCNP and ORIGEN to an achievable burnup of ~62.5 GWd/t. The results demonstrate a minimal penalty to reactor performance due to the addition of these materials as compared against the reference design. Coupling of a proliferation-resistant fuel concept with a uniform loading of natural gadolinia burnable absorber for LEU+ fuel (7.5 wt.% 235U/U UO2) provides favorable excess reactivity considerations with minimized concerns for additional residual waste and more uniform distribution of un-depleted 235U in discharged fuel assemblies.

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Rozprawy doktorskie na temat "Absorbeur mini"

Cheng, Hao. "Etude d'absorption chimique du dioxyde de carbone : transfert de masse en écoulement diphasique dans un minicanal et conception d'un nouvel absorbeur multicanaux". Electronic Thesis or Diss., Nantes Université, 2024. http://www.theses.fr/2024NANU4030.

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Les dispositifs à micro/mini-canaux suscitent un vif intérêt pour l'absorption chimique efficace du CO₂ dans le cadre du captage de CO2. Cette thèse de doctorat vise à caractériser et à étudier le processus de transfert de masse à travers l’écoulement diphasique accompagné de réactions chimiques dans les mini-canaux, ainsi qu'à concevoir et développer de nouveaux absorbeurs de CO₂ miniaturisés avec des structures optimisées vis-à-vis de leurs performances d'absorption. Tout d'abord, la dynamique des bulles dans un mini-canal droit en T a été observée par moyen optique, montrant que la réaction chimique supprime la fragmentation des bulles mais favorise leur rétrécissement. Ensuite, le champ de vitesse et le champ de concentration de CO₂ dans le liquide ont été déterminés respectivement par la PTV et la colorimétrie sensible au pH, permettant le développement d'un modèle de transfert de masse de cellule unitaire modifié, intégrant les effets de la recirculation du flux et de la réaction chimique. En outre, une structure de chicane en spirale a été intégrée dans le mini-canal, d’où une amélioration significative du transfert de masse avec une faible augmentation des pertes de charge. Enfin, sur la base de cette stratégie d'intensification, une conception innovante d'absorbeur de CO₂ multicanaux intégrés, caractérisée par des unités parallèles de minicanaux croisés en double hélice conjuguée (Codohec), a été proposée. Un module à l'échelle du laboratoire de cette conception a été réalisé et ses performances d'absorption ont été évaluées de manière exhaustive, mettant en évidence divers avantages tels qu'un coefficient de transfert de masse élevé, une consommation d'énergie acceptable, un taux d'élimination élevé et une grande capacité de traitement du CO₂. Les résultats de cette thèse pourraient fournir de nouvelles perspectives sur les mécanismes de transport sousjacents du transfert de masse gaz-liquide accompagné de réactions chimiques et contribuer à la conception et à l'optimisation d'absorbeurs de CO₂ miniaturisés hautement efficaces pour des applications industrielles
Micro/minichannel devices show great interests for their potential in efficient CO2 chemical absorption in the context of the carbon capture. This PhD these aims to characterize and investigate the transport mechanisms involved in chemical reactionaccompanied two-phase mass transfer in minichannel, and to design and develop novel miniaturized CO2 absorbers featuring intensified structures and optimized absorption performances. Firstly, bubble dynamics within a T-junction straight minichannel were optically observed, showing that the chemical reaction tends to suppress bubble breakup while promoting its shrinkage. Then, the velocity field and CO2 concentration field in the liquid slug were determined using PTV and pH-sensitive colorimetry, respectively, permitting the development of a modified unit-cell mass transfer model that incorporates the effects of flow recirculation and chemical reaction. Further enhancement was achieved by embedding a spiral distributed baffle structure into the minichannel, leading to a significant increase in mass transfer coefficient with only a minor rise in pressure drop. Finally, building on this intensification measure, a novel design for an integrated multichannel CO2 absorber was proposed, featuring paralleling units of conjugated double-helix cross minichannels (Codohec). A lab-scale module of this design was realized, and its absorption performance was comprehensively evaluated, highlighting various advantages including a high mass transfer coefficient, acceptable energy consumption, high remove rate, and large CO2 treatment capacity. These findings may provide new insights into the underlying transport mechanisms of chemical reaction-accompanied gas-liquid mass transfer and contribute to the design and optimization of highly efficient miniaturized CO2 absorbers for industry applications

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Hendricks, Nicolette Rebecca. "The application of high capacity ion exchange absorbent material, synthesized from fly ash and acid mine drainage, for the removal of heavy and trace metals from secondary co-disposed process waters". Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&amp.

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The objective of this study was to investigate the feasibility of the application of low cost high capacity inorganic ion exchange material, synthesized form collected fly ash and acid mine drainage solid residues, for the decontamination of secondary co-disposal process waters, with emphasis on investigating the processes governing the solid/solution interface.

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Glaserová, Barbora. "Pedagogika a škola Marie Montessori v České republice". Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-306463.

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This thesis "Pedagogy and Maria Montessori School in the Czech Republic" in the theoretical part describes the life of Maria Montessori, Montessori principles of education and development of Montessori schools with a focus on their development in the Czech Republic. The practical part deals with a case study of a Prague school with Montessori principles and a questionnaire survey with the headmaster of Montessori schools.

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Książki na temat "Absorbeur mini"

Montessori, Maria. Absorbent Mind. Start Publishing LLC, 2013.

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Absorbent Mind. Lulu Press, Inc., 2011.

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Absorbent Mind. Creative Media Partners, LLC, 2021.

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Absorbent Mind. Creative Media Partners, LLC, 2018.

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Absorbent Mind. Blurb, 2019.

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Absorbent Mind. Martino Fine Books, 2022.

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Absorbent Mind. Creative Media Partners, LLC, 2021.

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Absorbent Mind. Rehak, David, 2016.

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Montessori, Maria. Absorbent Mind. Lulu Press, Inc., 2010.

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Montessori, María. Absorbent Mind. Buccaneer Books, Incorporated, 1993.

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Części książek na temat "Absorbeur mini"

Naji, Zainab H., i Mohammed F. Mohammed. "Optimum Hydraulic Diameter of Mini-Channel Absorber Collector in Thermal Performance". W Lecture Notes in Mechanical Engineering, 375–85. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1939-8_30.

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Cummins, Sarah. "The Planes of Development and the Absorbent Mind". W Incorporating Montessori Principles into Your Early Years Environments, 34–43. London: Routledge, 2024. http://dx.doi.org/10.4324/9781003466970-5.

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Vroegh, Thijs. "Music-Evoked Imagery in an Absorbed State of Mind". W Music and Mental Imagery, 189–98. London: Routledge, 2022. http://dx.doi.org/10.4324/9780429330070-20.

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Murray, Peter B. "Absorbed Action: “Sure this robe of mine does change my disposition”". W Shakespeare’s Imagined Persons, 173–78. London: Palgrave Macmillan UK, 1996. http://dx.doi.org/10.1057/9780230376755_7.

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Schettino, Giuseppe, Sarah Baatout, Francisco Caramelo, Fabiana Da Pieve, Cristian Fernandez-Palomo, Nina Frederike Jeppesen Edin, Aidan D. Meade, Yann Perrot, Judith Reindl i Carmen Villagrasa. "Mechanistic, Modeling, and Dosimetric Radiation Biology". W Radiobiology Textbook, 191–236. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-18810-7_4.

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AbstractThe ultimate aim of radiobiological research is to establish a quantitative relationship between the radiation dose absorbed by biological samples (being this a cell, a tissue, an organ, or a body) and the effect caused. Therefore, radiobiological investigations need to be supported by accurate and precise dosimetric measurements. A rigorous standardized methodology has been established to assess and quantify the radiation dose absorbed by biological samples and these will be reviewed and discussed in this chapter. Dosimetric concepts at the macro- and microscopic levels are discussed with a focus on key physical quantities, their measurement technologies, and the link to the biological damage and response. This chapter will also include a description of state-of-the-art irradiation facilities (e.g., mini- and micro-beams) used for probing mechanisms underpinning radiobiological responses. Finally, the link between energy deposition events and detectable biological effects (from the molecular to the organism level) is investigated using Monte Carlo simulation codes and macroscopic radiobiological models.

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Jian, Gong. "Evolution of the “Crescent Guard” in Chinese Swords". W Martial Culture and Historical Martial Arts in Europe and Asia, 151–82. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2037-0_5.

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AbstractIron and steel arms appeared in China during the late Warring States while guards on Han dynasty jian (double-edged sword) mainly continued Warring States designs. Single-edged ring-pommel sword (huanshoudao) which appeared during the same period did not have a guard. During the Jin dynasty, a type of V-shape sword guard appeared, which continued into the Southern and Northern dynasties. In the Tang dynasty, on the one hand, arms design continued Northern Zhou and Sui trends; at the same time, it absorbed Turkic and Sassanid influences from the west, which gave rise to a unique Tang sword aesthetic. From then on, V-shape guards started to gain popularity in China. Developments of this style were to have a major influence on sword guard designs during the Song, as well as among the Mongols and Tibetans until it finally attained the familiar form of zoomorphic guard during the Ming and Qing dynasties.

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Piazena, H., W. Müller i Peter Vaupel. "Physical and Photobiological Basics of wIRA-Hyperthermia". W Water-filtered Infrared A (wIRA) Irradiation, 35–53. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92880-3_3.

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AbstractInformation regarding physical and photobiological basics of wIRA-HT has been derived under in vivo conditions in piglets and human tissues. Since wIRA fits into the optical window of tissues, direct conversion of absorbed radiation into heat (T >39 °C) has been proven up to tissue depths of 26 mm. Tissue heating cannot sufficiently be characterized by the specification of the radiant exposure (dose) due to its dependence on the thermal impact of irradiance and exposure time and on heat dissipation and metabolic heat production. If irradiations of identical doses are used, resulting tissue hyperthermia levels are the higher, the shorter the exposure time and the higher the irradiance. To comply with the ESHO criteria, incident wIRA irradiances should exceed ≈ 110 mWcm−2 (IR-A). At higher irradiances, steady-state temperatures (SST) ≥ 39 °C have been observed to tissue depths >20 mm in piglets and up to 26 mm in humans. SST values ≥40 °C have been measured up to tissue depths >20 mm (piglets) and up to 16 mm (humans), and SSTs ≥41 °C up to 16 mm (piglets) and up to 8 mm (humans). Post-heating temperature decay times limit optimal intervals between hyperthermia (HT) and subsequent radiotherapy (RT) sessions to periods ≤5 min.

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Li, Zetong, Yaru Wang, Dazhan Jiang, Shuaipeng Li, Jiaming Fan, Li Zhang i Zhiguo Sun. "Performance of K2CO3 with the Addition of Sodium Humate in CO2 Capture". W Advances in Transdisciplinary Engineering. IOS Press, 2023. http://dx.doi.org/10.3233/atde230318.

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In this paper, carbonation reaction experiments were conducted using sodium humate modified K2CO3 absorber (HA-Na/KHCO3). The effects of carbonation temperature, CO2 concentration, doping amount and number of regeneration cycle reactions on the carbonation performance of HA-Na modified absorber were investigated. Under the optimum conditions of carbonation reaction (80°C, 20 min, 15% CO2, 65% N2, 20% H2O) and regeneration reaction (200°C, 30 min, 40% N2, 60% H2O), the optimum doping amount of HA-Na was 30%. HA-Na improved the surface structure of K2CO3 crystals, which led to the improvement of K2CO3 carbonation properties. In addition, we used X-ray diffraction (XRD) and scanning electron microscopy (SEM) to analyze the properties of the calcined sorbents.

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Doyle, Arthur Conan. "Three Broken Threads". W The Hound of the Baskervilles. Oxford University Press, 2008. http://dx.doi.org/10.1093/owc/9780199536962.003.0006.

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SHerlock Holmes had, in a very remarkable degree, the power of detaching his mind at will. For two hours the strange business in which we had been involved appeared to be forgotten, and he was entirely absorbed in the pictures of the modern...

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Collins, Wilkie. "Chapter IV The Two". W Man and Wife. Oxford University Press, 2008. http://dx.doi.org/10.1093/owc/9780199538171.003.0010.

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He advanced a few steps, and stopped. Absorbed in herself, Anne failed to hear him. She never moved. ‘I have come, as you made a point of it,’ he said, sullenly. ‘But, mind you, it isn’t safe.’ At the sound of his voice, Anne turned...

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Streszczenia konferencji na temat "Absorbeur mini"

Ibrahim, Nasiru I., Fahad A. Al-Sulaiman i Saidur Rahman. "Thermodynamic Analysis of a Mini Hybrid Solar Driven Cooling-Desalination System". W ASME 2016 10th International Conference on Energy Sustainability collocated with the ASME 2016 Power Conference and the ASME 2016 14th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/es2016-59524.

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Water desalination and air conditioning consumes huge amount of energy that mostly come from fossil fuels, which produces harmful emissions detrimental to the environment. This work is concerned with the use of a new hybrid cooling and water desalination system driven by solar thermal energy. The system primarily consists of an evacuated tube solar collector, LiBr absorption chiller, and a humidification-dehumidification (HDH) unit. Seawater is used to cool the condenser and absorber of the chiller as well as the condenser of the HDH unit. The heat rejected by the absorber is used to drive the HDH unit. Thermodynamic model of the system has been formulated and simulated using engineering equation solver (EES) software. The results show that the coefficient of performance (COP) of the chiller nearly remain constant with increase in seawater temperature at the absorber inlet. The average COP of the chiller is found to be 0.76. The hybrid system efficiency increases with increase in the seawater temperature mainly due the effect of latent heat of water condensation. The rate of fresh water production increases with increase in the seawater inlet temperature. This resulted in a higher outlet temperature at the absorber exit, leading to a higher energy input to the HDH unit. Gained output ratio (GOR) increases with increase in seawater temperature. This is due to the direct proportionality of the GOR to the amount of fresh water produced. The results also revealed that increasing the flow rate of seawater causes the decrease in the fresh water production due to the corresponding decrease in the temperature of the seawater.

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Kim, Jin-Kyeong, Chan Woo Park, Ig Saeng Kim, Jong Soo Jurng i Yong Tae Kang. "Wettability Measurement and Criterion for a Falling Film Absorber". W ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/aes-23606.

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Abstract The objectives of this paper are to develop a new method of wettability measurement and to study the effect of surface roughness on the wettability in a LiBr/H2O falling film absorber. Three absorber tubes with micro-scale roughness are tested in a falling film absorber installed in a test rig. Inlet solution temperature (30–50°C), concentration (55–62 weight % of LiBr) and mass flow rate (0.74–2.71 kg/min) are considered as key parameters. A new method is proposed to estimate the wettability of a tube by measuring a minimum mass flow rate to wet the tube completely. Reynolds number is ranged from 30 to 120 by controlling the inlet mass flow rate. The wettability for the structured surfaces was higher than that for the bare tube. The wettability decreased linearly along the vertical location as low as 65% for the bare tube and 75% for the micro-scale scratched tubes. The wettability increased with increasing the solution temperature and the solution mass flow rate. The effect of film Reynolds number on the wettability in the bare tubes was more significant man that in the micro-scale scratched tubes. The experimental results of wettability can be used in the design of absorbers with micro-scale roughness.

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Abdullah, Hasnain, Malisa Shaziea Sabilurrashad, Imran Mohd Ibrahim, Rusnani Ariffin, Siti Zura A. Jalil, Wan Khairuddin Wan Ali i Mohd Nasir Taib. "Design of portable mini anechoic chamber using low cost composite absorber". W 2009 IEEE Student Conference on Research and Development (SCOReD). IEEE, 2009. http://dx.doi.org/10.1109/scored.2009.5442944.

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Diaz, Gerardo. "Performance Analysis and Design Optimization of a Mini-Channel Evacuated-Tube Solar Collector". W ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67858.

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The utilization of renewable energy sources is receiving considerable attention as a non-resource-depleting approach that reduces the emissions of pollutants and green-house gases to the atmosphere. Solar thermal systems have the capability to provide heat in a sustainable way for a variety of applications due to the relatively large range of temperatures that different collector configurations can attain. Most evacuated-tube solar collectors currently found on the market consist of a u-shaped round tube, concentric round tubes in counter flow regime, or a heat-pipe. The external surface in these designs is welded to a thin absorber fin that is covered with a selective coating. This paper analyzes the performance of an evacuated-tube solar collector that contains a U-shaped mini-channel tube. Comparisons of performance with respect to standard u-shaped round-tube solar collector are made. The design of a mini-channel based solar collector without absorber fin is also analyzed and its performance optimized with respect to its geometrical parameters.

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Ebadi, Hossein, Antonio Cammi i Laura Savoldi. "Investigation on a Double-Pass Tubular Absorber for Application in Solar Towers". W ASME 2023 17th International Conference on Energy Sustainability collocated with the ASME 2023 Heat Transfer Summer Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/es2023-108401.

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Abstract The present study combines the concept of double-pass flows with high-temperature solar receivers, introducing a novel design to reduce heat losses and increase performance. A tubular absorber from the billboard solar tower systems was used to develop the new double-pass (DP) design, working with air as the heat transfer fluid. To assess the effectiveness of such a system, a numerical study was performed using CFD analysis with Star CCM+ commercial software. Several simulations were made based on the thermal models, validated with real data obtained from a solar furnace tested during an experimental campaign in June 2022. The thermo-hydraulic characteristics were analyzed for various solar peak fluxes (50, 100, and 200 kW/m2) and air mass flow rates (30, 40, 50 L/min) to provide a comprehensive comparison between the single pass (SP) and DP absorbers. The computed numerical results suggested that using the DP design instead of SP absorbers under all the test conditions, the average energy and exergy efficiency enhancement are 35% and 55%, respectively, while the pressure drop increases with an average of 62%. As a result, the DP design can be used as an alternative for future solar tower designs, bringing higher heat removal efficiency in air-based solar systems.

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Abdullah, Hasnain, Juliana Md Sharif, Mohd Nasir Taib, Rusnani Ariffin, Nurul Iza Muhammad, Rohaiza Baharudin, Asmalia Zanal i in. "Performance study of preliminary mini anechoic chamber fitted with coconut shell coated absorbers". W 2013 IEEE International Conference on Control System, Computing and Engineering (ICCSCE). IEEE, 2013. http://dx.doi.org/10.1109/iccsce.2013.6720036.

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Raheema, Yasameen S., i Bashar O. Bedaiwi. "Utilizing mini-tubes absorbers to investigate steam generation by a parabolic trough collector". W INTERNATIONAL CONFERENCE ON SCIENTIFIC RESEARCH & INNOVATION (ICSRI 2022). AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0150734.

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Kodama, Tatsuya, Nobuyuki Gokon, Shin-ichi Inuta, Shin-go Yamashita, Tsuyoshi Hatamachi i Taebeom Seo. "Molten-Salt Tubular Absorber/Reformer (MoSTAR) Project: Metal-Plate-Bridged Double Tube Reactor". W ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/es2009-90230.

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The Molten-Salt Tubular Absorber/Reformer (MoSTAR) Project, which is jointly conducted by Niigata University, Japan, and Inha University, Korea, aims to develop a novel-type of “double-walled” tubular absorbers/reformers with molten-salt thermal storage at high temperature for use in solar natural-gas reforming and solar air receiver, and to demonstrate their performances on sun with a 5-kWt dish-type solar concentrator. The new concept of “double-walled” reactor tubes was proposed for use in a solar reformer by Niigata University, Japan, and involves packing a molten salt in the annular region between the internal catalyst tube and the exterior solar absorber tube of the double reactor tube. In this work, “metal-plate-bridged” double reactor tubes are newly proposed for use in a solar reformer. Two different sized reactor tubes are constructed, and tested on chemical reaction performance for dry reforming of methane during cooling or heat-discharge mode of the reactor tube using an electric furnace. The experimental results obtained under feed gas mixture of CH4/CO2 = 1:3 at a residence time of 0.36 s and at 1 atm showed that the double reactor tube with the heat storage medium Na2CO3 in the annular region successfully sustained a high methane conversion above 90% with about 0.7-kW output power of the reformed gas based on HHV for 40 min of the heat-discharge mode. The application of the new reactor tubes to solar tubular reformers is expected to help realize stable operation of the solar reforming process under fluctuating insolation during a cloud passage.

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White, Adrian, Maureen McGuinness i V. Newman. "Pipeline wear solution at Kidd Mine: energy absorbent ceramic composites". W 16th International Seminar on Paste and Thickened Tailings. Australian Centre for Geomechanics, Perth, 2013. http://dx.doi.org/10.36487/acg_rep/1363_43_white.

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Gaponenko, Maxim S., Victor E. Kisel, Alexander M. Malyarevich, Konstantin V. Yumashev, Nikolai V. Kuleshov i Alexei A. Onushchenko. "PbS-Quantum-Dot Saturable Absorber Q-switched Tm:KYW Mini-Laser with 9 ns / 40 μJ Pulses". W Advanced Solid-State Photonics. Washington, D.C.: OSA, 2011. http://dx.doi.org/10.1364/assp.2011.awa22.

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