Article
Physics, Multidisciplinary
C. A. Lindstrom, J. M. Garland, S. Schroeder, L. Boulton, G. Boyle, J. Chappell, R. D'Arcy, P. Gonzalez, A. Knetsch, V Libov, G. Loisch, A. Martinez de la Ossa, P. Niknejadi, K. Poder, L. Schaper, B. Schmidt, B. Sheeran, S. Wesch, J. Wood, J. Osterhoff
Summary: Energy-efficient plasma-wakefield acceleration of particle bunches with low energy spread is a promising approach for compact free-electron lasers and particle colliders. Optimal beam loading in a nonlinear electron-driven plasma accelerator has been experimentally demonstrated, showing significant energy transfer efficiency and wakefield flattening.
PHYSICAL REVIEW LETTERS
(2021)
Article
Multidisciplinary Sciences
R. D'Arcy, J. Chappell, J. Beinortaite, S. Diederichs, G. Boyle, B. Foster, M. J. Garland, P. Gonzalez Caminal, C. A. Lindstrom, G. Loisch, S. Schreiber, S. Schroeder, R. J. Shalloo, M. Thevenet, S. Wesch, M. Wing, J. Osterhoff
Summary: The interaction between particle bunches and plasma can generate plasma wakes capable of sustaining high-intensity electric fields. Plasma wakefields offer the opportunity to accelerate charged particles to higher energies with smaller accelerator facilities. However, the current plasma-wakefield technology cannot meet the high repetition rates required by high-energy physics and photon science. By measuring the recovery time of plasma after perturbation by a wakefield, this study establishes the in-principle attainability of megahertz rates of acceleration in plasmas. The experimental results confirm the feasibility of developing plasma-wakefield modules as high-repetition-rate energy boosters in particle-physics and photon-science facilities.
Article
Physics, Multidisciplinary
R. Pompili, D. Alesini, M. P. Anania, M. Behtouei, M. Bellaveglia, A. Biagioni, F. G. Bisesto, M. Cesarini, E. Chiadroni, A. Cianchi, G. Costa, M. Croia, A. Del Dotto, D. Di Giovenale, M. Diomede, F. Dipace, M. Ferrario, A. Giribono, V Lollo, L. Magnisi, M. Marongiu, A. Mostacci, L. Piersanti, G. Di Pirro, S. Romeo, A. R. Rossi, J. Scifo, V Shpakov, C. Vaccarezza, F. Villa, A. Zigler
Summary: Next-generation plasma-based accelerators can efficiently accelerate electron bunches, but the beam quality, particularly the energy spread, still lags behind state-of-the-art conventional accelerators. Through innovative methods like setting a positive energy chirp, the energy spread of electron bunches in plasma accelerators can be significantly reduced.
Article
Physics, Multidisciplinary
Shiyu Zhou, Jianfei Hua, Weiming An, Warren B. Mori, Chan Joshi, Jie Gao, Wei Lu
Summary: This study presents a novel approach to achieve rapid high-energy acceleration of positrons through symmetric focusing methods in a hollow plasma channel, which can improve the energy extraction efficiency and reduce the energy spread of positrons. Further optimization is feasible for even better results.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
T. Silva, L. D. Amorim, M. C. Downer, M. J. Hogan, V Yakimenko, R. Zgadzaj, J. Vieira
Summary: The study shows that thin, warm hollow channels can sustain large-amplitude plasma waves for high-quality positron acceleration. The combination of warm electrons and thin hollow channels enables positron focusing structures that unlock beam breakup damping mechanisms. These channels self-consistently emerge during long-term plasma dynamics, allowing for experimental demonstration.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
F. Batsch, P. Muggli, R. Agnello, C. C. Ahdida, M. C. Amoedo Goncalves, Y. Andrebe, O. Apsimon, R. Apsimon, A-M Bachmann, M. A. Baistrukov, P. Blanchard, F. Braunmueller, P. N. Burrows, B. Buttenschoen, A. Caldwell, J. Chappell, E. Chevallay, M. Chung, D. A. Cooke, H. Damerau, C. Davut, G. Demeter, H. L. Deubner, S. Doebert, J. Farmer, A. Fasoli, V. N. Fedosseev, R. Fiorito, R. A. Fonseca, F. Friebel, I Furno, L. Garolfi, S. Gessner, I Gorgisyan, A. A. Gorn, E. Granados, M. Granetzny, T. Graubner, O. Grulke, E. Gschwendtner, V Hafych, A. Helm, J. R. Henderson, M. Huther, I. Yu Kargapolov, S-Y Kim, F. Kraus, M. Krupa, T. Lefevre, L. Liang, S. Liu, N. Lopes, K. Lotov, M. Martyanov, S. Mazzoni, D. Medina Godoy, V. A. Minakov, J. T. Moody, K. Moon, P. I. Morales Guzman, M. Moreira, T. Nechaeva, E. Nowak, C. Pakuza, H. Panuganti, A. Pardons, A. Perera, J. Pucek, A. Pukhov, R. L. Ramjiawan, S. Rey, K. Rieger, O. Schmitz, E. Senes, L. O. Silva, R. Speroni, R. Spitsyn, C. Stollberg, A. Sublet, A. Topaloudis, N. Torrado, P. Tuev, M. Turner, F. Velotti, L. Verra, V. A. Verzilov, J. Vieira, H. Vincke, C. P. Welsch, M. Wendt, M. Wing, P. Wiwattananon, J. Wolfenden, B. Woolley, G. Xia, M. Zepp, G. Zevi Della Porta
Summary: The experiment demonstrates that sufficient initial amplitude (>= 4.1 MV/m) leads to reproducibility of phase along the proton bunch during self-modulation in plasma. However, lower initial amplitudes do not result in reproducible phase, highlighting the importance of phase reproducibility for deterministic external injection of particles to be accelerated.
PHYSICAL REVIEW LETTERS
(2021)
Article
Instruments & Instrumentation
J. M. Garland, G. Tauscher, S. Bohlen, G. J. Boyle, R. D'Arcy, L. Goldberg, K. Poder, L. Schaper, B. Schmidt, J. Osterhoff
Summary: The precise characterization and tailoring of plasma density evolution are critical for high-quality accelerated beams in plasma wakefield accelerators. Two independent diagnostics were used to detect plasma density with unprecedented sensitivity and characterize plasma temperature in discharge capillaries, allowing for highly detailed parameter tuning in plasma sources for particle accelerators and beam optics.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Physics, Fluids & Plasmas
L. Habl, T. Lafleur, D. Rafalskyi, P. Chabert
Summary: This study discusses the electron neutralization mechanism in a gridded ion source and explores a new pulsed neutralization scheme. Experimental and simulation analyses reveal that pulsed neutralization generates hot electrons and forms high-energy electron beams, which are crucial for understanding the plasma physics in these systems.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Physics, Fluids & Plasmas
A. A. Zenin, I. Yu Bakeev, A. S. Klimov, E. M. Oks
Summary: The research demonstrates that at a gas pressure of 30 Pa, the beam-plasma discharge is most pronounced in the range of accelerating voltage of 6-10 kV at electron beam currents of over 200 mA. The onset of the beam-plasma discharge is characterized by a tenfold increase in beam plasma density to 10(16) m(-3) and an increase in plasma electron temperature from 2 to 4.0 eV.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Physics, Applied
Shengpeng Yang, Changjian Tang, Shaomeng Wang, Zhanliang Wang, Ping Zhang, Yang Yang, Zhigang Lu, Yubin Gong
Summary: A new scheme is proposed to generate high power terahertz radiation using two obliquely colliding electron beams in plasma, showing advantages of a simple structure and no need for extreme parameter conditions.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Physics, Fluids & Plasmas
Q. Su, J. Larson, T. N. Dalichaouch, F. Li, W. An, L. Hildebrand, Y. Zhao, V. Decyk, P. Alves, S. M. Wild, W. B. Mori
Summary: Plasma-based acceleration is a promising candidate for future linear colliders or next-generation light sources. The plasma wakefield accelerator (PWFA) concept, where a plasma wave wake is excited by a particle beam and a trailing beam surfs on the wake, is considered. To achieve efficient energy transfer and preserve beam properties, longitudinally shaped bunches and nonlinear wakes are used. However, the optimal shape in the nonlinear regime is not precisely obtainable due to the lack of a theory describing wake structure and excitation process for all degrees of nonlinearity. An optimization method is presented to determine the current profile for the drive and trailing beam in PWFA, resulting in higher transformer ratios compared to the linear ramp predicted by the relativistic limit of the nonlinear theory.
PHYSICS OF PLASMAS
(2023)
Article
Physics, Multidisciplinary
Ji-Gwang Hwang, Katharina Albrecht, Arne Hoehl, Benat Alberdi Esuain, Thorsten Kamps
Summary: The research demonstrates an interferometric method for high-resolution measurement of beam size, providing a way to ensure the performance of laser-driven accelerators. It also shows the feasibility of plasma-based accelerators for applications in medical sciences, imaging, or as injectors for future large-scale accelerator-driven light sources. The proposed beam diagnostic technique offers precise measurement of lateral beam sizes, showcasing potential for achieving precise retrieval of complex coherence at low photon intensities.
COMMUNICATIONS PHYSICS
(2021)
Article
Biochemistry & Molecular Biology
Manuel Lisetto, Mariagiulia Fattorini, Andrea Lanza, Marco Gerdol, Martin Griffin, Zhuo Wang, Fortunato Ferrara, Daniele Sblattero
Summary: Transglutaminase 2 (TG2) is a multifunctional protein involved in various physiological and pathological processes. Its role in these processes is controversial due to different effects depending on localization, cell type, or experimental conditions. This study characterized the enzymatic and functional properties of TG2 proteins in zebrafish and demonstrated their similarities to the human ortholog.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
D. B. Zolotukhin, E. M. Oks, A. Tyunkov, E. Yakovlev, Yu G. Yushkov
Summary: The ion etching of dielectrics can be significantly enhanced by using a dielectric cavity to impede negative charge escape, form higher negative target potentials, and accelerate the ions, resulting in higher plasma density and electron temperature compared to without the cavity, leading to more efficient etching of the dielectric material.
Article
Engineering, Chemical
Tatiana Vasilieva, Oscar Goni, Patrick Quille, Shane O'Connell, Dmitry Kosyakov, Semen Shestakov, Nikolay Ul'yanovskii, Michael Vasiliev
Summary: A novel technique of producing phytoactive water-soluble chitooligosaccharide (COS) in low-temperature plasma was described in this study. The electron beam plasma was used to produce COS from high molecular weight chitosan powder, and laboratory tests showed that COS stimulated root growth in Arabidopsis thaliana seedlings and increased flower and fruit numbers in tomato plants. This environmentally friendly technology could be a competitive way to produce biostimulants for commercial agriculture.
Article
Biotechnology & Applied Microbiology
V. Chiono, G. Ciardelli, G. Vozzi, J. Cortez, N. Barbani, P. Gentile, P. Giusti
ENGINEERING IN LIFE SCIENCES
(2008)
Article
Biotechnology & Applied Microbiology
E. Fatarella, I. Ciabatti, J. Cortez
ENZYME AND MICROBIAL TECHNOLOGY
(2012)
Meeting Abstract
Biotechnology & Applied Microbiology
B. Chagas, F. Freitas, L. Mafra, J. Cortez, R. Oliveira, M. A. M. Reis
JOURNAL OF BIOTECHNOLOGY
(2010)
Article
Chemistry, Multidisciplinary
J. Cortez, E. Vorobieva, D. Gralheira, I. Osorio, L. Soares, N. Vale, E. Pereira, P. Gomes, R. Franco
JOURNAL OF NANOPARTICLE RESEARCH
(2011)
Article
Materials Science, Textiles
Raija Lantto, John Ellis, Enrico Fatarella, Joao Cortez
JOURNAL OF THE TEXTILE INSTITUTE
(2012)
Article
Materials Science, Multidisciplinary
Kasra Kardarian, Tito Busani, Ines Osorio, Helena Domingos, Rui Igreja, Ricardo Franco, Joao Cortez
MATERIALS CHEMISTRY AND PHYSICS
(2014)
Article
Materials Science, Multidisciplinary
Ines Osorio, Rui Igreja, Ricardo Franco, Joao Cortez
Article
Biotechnology & Applied Microbiology
Joao Cortez, Anna Anghieri, Philip L. R. Bonner, Martin Griffin, Giuliano Freddi
ENZYME AND MICROBIAL TECHNOLOGY
(2007)
Meeting Abstract
Chemistry, Multidisciplinary
Joao Cortez, C. Kulik, John Ellis, Giuliano Freddi, Raija Lantto, Elisabeth Heine
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2007)
Meeting Abstract
Chemistry, Multidisciplinary
Joao Cortez, Enrico Fatarella, Luca Lombardi, Ingrid Ciabatti
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2007)
Article
Biotechnology & Applied Microbiology
J Cortez, PLR Bonner, M Griffin
JOURNAL OF BIOTECHNOLOGY
(2005)
Article
Biotechnology & Applied Microbiology
J Cortez, PLR Bonner, M Griffin
ENZYME AND MICROBIAL TECHNOLOGY
(2004)
Article
Materials Science, Textiles
JM Cortez, J Ellis, DP Bishop
TEXTILE RESEARCH JOURNAL
(2002)
Article
Biotechnology & Applied Microbiology
R Collighan, J Cortez, M Griffin
MINERVA BIOTECNOLOGICA
(2002)
Article
Biotechnology & Applied Microbiology
Thore Bach Thomsen, Tobias S. Radmer, Anne S. Meyer
Summary: Plastic pollution, particularly from PET, is a significant environmental challenge. This study investigates the enzyme kinetics of PET degradation and finds that the degree of crystallinity (X-C) has a substantial impact on the enzymatic reaction rate. The mobile amorphous fraction (X-MAF) is a better descriptor for the rate of enzymatic degradation. The longer lag phase observed with increased X-C is proposed to be due to increased substrate entanglement density and unproductive enzyme binding to the crystalline regions of PET.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Purna Bahadur Poudel, Dipesh Dhakal, Jong Cheol Lee, Jae Kyung Sohng
Summary: Methylation plays important roles in various biological processes, and this study characterized the function of ThnM3 in regioselective modifications of 1,8-dihydroxynaphthalene.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Feng Song, Ivan Birukou, Mark Bednarcik, Scott Young
Summary: In this study, a highly sensitive and specific method using ultra performance liquid chromatography (UPLC) was developed to measure the enzymatic activity of APH4 in plants. The method exhibited good precision and accuracy, and was validated for use with samples from different sources.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Yuan Rao, Wei Zhuang, Jinle Liu, Ting Tang, Zhi Wang, Hanjie Ying
Summary: This study describes a mild and versatile strategy to immobilize glucose oxidase (GOD) on carboxyl-activated metal-organic framework (MOF) through DNA-directed immobilization technology. The immobilized GOD showed enhanced stability and catalytic activity, making it a potential candidate for applications in biocatalysis and biotechnology.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Julen Ordenana Manso, Martin B. Nielsen, Eva Balaguer Moya, Juliana P. Sandri, Celina K. Yamakawa, Solange I. Mussatto
Summary: This study focuses on the development of an enzymatic cocktail for the conversion of corn fiber into monosaccharides. The results reveal that the recalcitrance and unique chemical composition of corn fiber require a tailored enzymatic cocktail for degradation, and attention should also be given to the pretreatment step.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Cuixia Zhou, Guangcheng Yang, Panpan Meng, Weishuai Qin, Yanyan Li, Zhenxian Lin, Wei Hui, Huitu Zhang, Fuping Lu
Summary: Bacillus licheniformis 2709 is an important industrial producer of alkaline protease (AprE), and this study identified the UP elements of the aprE gene and demonstrated the lack of significant effect of CggR, FruR, and YhcZ transcription factors on aprE expression. Enhanced aprE expression and enzyme activity were achieved by deleting a negative regulatory factor binding site in the genome. These findings provide valuable insights into the high-level production of proteins in other Bacillus species.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Xinqi Xu, Tianheng Chen, Lian Xu, Juan Lin
Summary: In this study, laccase was immobilized on modified magnetic nanoparticles, improving the enzyme's thermostability and efficiency for polymerization of phenols.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Handan Ustukarci, Gul Ozyilmaz, Ali Tuncay Ozyilmaz
Summary: A biofilm layer called biofouling is formed over time by organic molecules and microorganisms on solid surfaces immersed in a liquid medium. This study focused on the antifouling performance of polyaniline (PANI) and investigated the immobilization of hydrolytic enzymes in PANI coatings. The results showed that the alpha-amylase-containing film exhibited the highest antifouling activity. Surface properties and biofilm composition were analyzed to support these findings.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)
Article
Biotechnology & Applied Microbiology
Mariana Ortiz-Sanchez, Juan Camilo Solarte-Toro, Pablo Jose Inocencio-Garcia, Carlos Ariel Cardona Alzate
Summary: This study evaluated the sustainability of biorefineries using orange peel as a raw material. By applying the concept of biorefineries and experimental data, it was found that steam distillation and polyphenolic compound extraction can improve the process performance, resulting in higher yields of different products. The integrated utilization of orange peel in biorefineries showed a high sustainability index.
ENZYME AND MICROBIAL TECHNOLOGY
(2024)