Article
Chemistry, Multidisciplinary
Bernadeta Dobosz, Ryszard Krzyminiewski, Malgorzata Kucinska, Marek Murias, Grzegorz Schroeder, Joanna Kurczewska
Summary: This study investigates the process of endocytosis of spin probes into yeast cells and a leukemia cell line using Electron Spin Resonance (ESR) method. The results show that spin probes can scavenge free radicals inside the cells.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Analytical
Marco Rosenkranz, Steffen Lessny, Bernd Noecker, Steven Breakspear, Evgenia Dmitrieva
Summary: In this study, the formation and evolution of free radicals in human hair were investigated using the EPR-strain technique. The radicals formed in the hair through the cleavage of cystine residues were identified. The stability of the radicals in dry hair and in the presence of water was studied. The results showed that the evolution of sulfur radicals only occurred at strains above approximately 25%, which coincided with the Post-Yield region of the hair's stress-strain behavior.
Article
Engineering, Electrical & Electronic
Antonin Sojka, Matus Sedivy, Adam Lagin, Andrej Gabris, Tomas Laznicka, Vinicius Tadeu Santana, Oleksii Laguta, Petr Neugebauer
Summary: This article presents a set of exchangeable sample holders for a sub-THz ESR spectrometer, allowing fast-loading and measurements at high magnetic fields and various temperature ranges. The solution expands the applications of HF-ESR spectroscopy.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Chemistry, Physical
Takashi Kobayashi, Joseph Salfi, Cassandra Chua, Joost van der Heijden, Matthew G. House, Dimitrie Culcer, Wayne D. Hutchison, Brett C. Johnson, Jeff C. McCallum, Helge Riemann, Nikolay Abrosimov, Peter Becker, Hans-Joachim Pohl, Michelle Y. Simmons, Sven Rogge
Summary: Strong spin-orbit coupling systems allow for electrically controlled spin qubits, with electron-spin qubits having long coherence times suitable for quantum technologies. Ultra-long coherence times of 10 ms have been demonstrated for strain-engineered hole states bound to boron acceptors in bulk silicon 28, promising to greatly improve spin qubit scalability and functionality. These results open up new possibilities for developing artificial quantum systems and enhancing the functionality and scalability of spin-based quantum technologies.
Article
Chemistry, Multidisciplinary
Souma Yoshida, Naoya Murakami, Yoshiyuki Takatsuji, Tetsuya Haruyama
Summary: In this study, the authors found that dissociated nitrogen (N-atom) had a greater impact on ammonia selectivity in the plasma/liquid interfacial reaction compared to excited nitrogen molecules. By connecting the reaction locus with a high N-atom generation device, they achieved high selectivity in aqueous ammonia production while minimizing the formation of aqueous nitrate ions. The researchers also observed the release of oxygen and hydrogen atoms from water, forming NO and hydrogen gas, which further improved the ammonia synthesis selectivity.
Article
Polymer Science
Thu Anh Nguyen, Shota Ichise, Kenji Kinashi, Wataru Sakai, Naoto Tsutsumi, Satoko Okubayashi
Summary: The thermal degradation mechanism of poly(propylene) fabric was analyzed using the electron spin resonance (ESR) spin-trapping technique. The results showed that the degradation of poly(propylene) starts from the tertiary carbon positions and involves various pathways of radical formation, which further participate in the degradation process of poly(propylene).
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Polymer Science
Tomoki Hayashi, Kenji Kinashi, Wataru Sakai, Naoto Tsutsumi, Ayaka Fujii, Seisuke Inada, Hiroshi Yamamoto
Summary: Spin-trapping ESR and GPC analyses were used to study the thermal degradation mechanisms of PVA, revealing the production of radical intermediates and the occurrence of cross-linking reactions at temperatures above 100°C. Main chain scission was also observed significantly around 200°C, indicating the importance of the elimination of .OH in PVA degradation.
Article
Food Science & Technology
Jiang-Feng Yuan, Zhuo-Yao Chen, Da-Hong Wang, Ming-Gui Gong, Zhi-Jun Qiu
Summary: Microwave can directly induce the production of 1-hydroxyethyl free radical in red wine and model wine. The intensity of free radicals induced by microwave increases with higher power and time, and decreases at higher temperatures. Microwave irradiation is considered a promising aging technology in accelerating aging of wine products.
JOURNAL OF FOOD PROCESSING AND PRESERVATION
(2021)
Article
Chemistry, Physical
Iara S. Lima, Eder J. Guidelli, Oswaldo Baffa
Summary: An investigation into radiation-induced free radicals in X-ray irradiated L-asparagine using ESR spectroscopy was conducted for dosimetric purposes. The study found that L-asparagine exhibits linear dose-response characteristics and good stability over a range of dose rates, making it a potential candidate for electron spin resonance dosimetry of ionizing radiation.
RADIATION PHYSICS AND CHEMISTRY
(2021)
Article
Chemistry, Physical
Sumit Naskar, Vladimiro Mujica, Carmen Herrmann
Summary: Electrons moving through chiral molecules are selectively influenced by their spin orientation and the helicity of the molecule in a phenomenon called chiral-induced spin selectivity (CISS). In this study, carbon helices connected to gold electrodes were investigated using a non-equilibrium Green's function method, a Landauer approach, and density functional theory. It was found that the transmitted electrons exhibited spin polarization, which was also observed in the non-equilibrium electronic structure of the junctions. Although the spin polarization was small, its sign changed with the current direction and the handedness of the molecule. The use of computationally more expensive hybrid functionals may lead to larger spin polarization, suggesting that non-equilibrium spin polarization could be a key element in understanding the CISS mechanism.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Applied
Haizhou Wu, Shulan Xiao, Jie Yin, Jianhao Zhang, Mark P. Richards
Summary: The research shows that adding free fatty acids can inhibit lipid oxidation in meat, as well as forming hemichrome in hemoglobin by their interaction, which further reduces the oxidative capacity.
Article
Geography, Physical
Man-Yin Tsang, Shin Toyoda, Makiko Tomita, Yuzuru Yamamoto
Summary: The decay of ESR intensity in barite was found to be a second-order reaction and the closure temperature range of barite was determined. These results are essential for assessing the suitable environments for ESR dating in barite and the conditions for age erasure.
QUATERNARY GEOCHRONOLOGY
(2022)
Article
Multidisciplinary Sciences
Bjorn Miksch, Andrej Pustogow, Mojtaba Javaheri Rahim, Andrey A. Bardin, Kazushi Kanoda, John A. Schlueter, Ralph Hubner, Marc Scheffler, Martin Dressel
Summary: The study investigated the κ-(BEDT-TTF)2Cu-2(CN)3 using multifrequency electron spin resonance (ESR) down to millikelvin temperatures, revealing a rapid decrease in spin susceptibility at 6 kelvin, suggesting the formation of a valence bond solid ground state. It also identified the dominant contribution of impurities to the ESR response when intrinsic spins form singlets, highlighting the pivotal role of defects in the low-energy properties of quantum spin systems without magnetic order.
Review
Chemistry, Physical
Fabienne Peyrot, Sonia Lajnef, Davy-Louis Versace
Summary: In order to address economic issues in the past decade, free-radical photopolymerization has made significant progress. Various photoinitiating systems have been developed to enable photopolymerization reactions in the visible or near infrared range. Electron paramagnetic resonance coupled to spin trapping is an invaluable technique for understanding the photochemical mechanisms and characterizing the nature of radicals in free-radical photopolymerization.
Article
Chemistry, Physical
Zheng Yue, Jin Liu, Martin Baumgarten, Di Wang
Summary: In order to investigate the mechanism of the spiro conjugation magnetic behavior, three diradicals-22'SBF-NN, 44'SBF-NN, and 27SBF-NN were designed and synthesized. The experiments and calculations demonstrated that the intramolecular conjugation coupling bridged by spiro-carbon conjugation resulted in weaker spin-spin coupling and anomalous intramolecular antiferromagnetic coupling. The bridge structure of the 44' position diradical blocked the conjugation and hindered sufficient spin density delocalization, leading to a much weaker spin coupling interaction.
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Article
Chemistry, Analytical
Sebastian Micus, Michael Haupt, Goetz T. Gresser
Summary: This study utilizes ultrasonic soldering to connect E-textiles to PCBs, aiming to improve connection strength and mechanical performance by adjusting the operating temperature and ultrasonic time.
Article
Biochemistry & Molecular Biology
Myriam Holl, Lucas Becker, Anna-Lena Keller, Nora Feuerer, Julia Marzi, Daniel A. Carvajal Berrio, Peter Jakubowski, Felix Neis, Jan Pauluschke-Froehlich, Sara Y. Brucker, Katja Schenke-Layland, Bernhard Kraemer, Martin Weiss
Summary: The study introduces a new technique for isolating and cultivating primary human mesothelial cells from laparoscopic peritoneal wash cytology, allowing for thorough characterization using various methods such as brightfield and immunofluorescence microscopy, flow cytometry, and Raman microspectroscopy. This approach provides insights into the morphology and biochemical properties of primary mesothelial cell cultures compared to cryo-fixed and cryo-sectioned peritoneal tissues.
Article
Materials Science, Multidisciplinary
Gerd Reichardt, Manuel Henn, Paul Reichle, Georg Umlauf, Kim Riedmueller, Rudolf Weber, Jakob Barz, Mathias Liewald, Thomas Graf, Guenter E. M. Tovar
Summary: In the deep drawing process, lubricants are essential to prevent wear and surface damage, but traditional options pose environmental and health risks, leading to research on a new system using liquid carbon dioxide and nitrogen gas introduced through micro-holes. Further investigations are focused on the lubrication medium's impact on tool wear.
Article
Chemistry, Multidisciplinary
Caroline Sander, Andreas Nitsch, Holger H. H. Erb, Eva K. Egger, Lyubomir Haralambiev, Benedikt Eggers, Franz-Josef Kramer, Martin Weiss, Alexander Mustea, Matthias B. Stope
Summary: The study found that NIPP treatment disrupts the permeability of the cytoplasmic membrane of breast cancer cells, resulting in loss of cellular ATP, apoptosis, and decreased cell growth.
APPLIED SCIENCES-BASEL
(2021)
Article
Oncology
Lea Volmer, Andre Koch, Sabine Matovina, Dominik Dannehl, Martin Weiss, Ganna Welker, Markus Hahn, Tobias Engler, Markus Wallwiener, Christina Barbara Walter, Ernst Oberlechner, Sara Yvonne Brucker, Klaus Pantel, Andreas Hartkopf
Summary: This study found that disseminated tumor cells (DTCs) in the bone marrow are an indicator of minimal residual disease and micrometastatic spread in breast cancer patients and can be detected at early stages of the disease. Neoadjuvant chemotherapy may promote the spread of DTCs and lead to poorer outcomes. The study also found that DTC-positive patients with >= 2 DTCs per 1.5 x 10(6) mononuclear cells in the bone marrow had impaired disease-free survival and overall survival.
Article
Biology
Madalena Cipriano, Katharina Schluender, Christopher Probst, Kirstin Linke, Martin Weiss, Mona Julia Fischer, Lena Mesch, Kevin Achberger, Stefan Liebau, Marina Mesquida, Valeria Nicolini, Anneliese Schneider, Anna Maria Giusti, Stefan Kustermann, Peter Loskill
Summary: Researchers have developed a human immunocompetent Choroid-on-Chip model that mimics immune responses in the presence of immune cells, offering a potential tool for studying the interplay between the immune system and oncology. This model may provide insights into eye disorders causing visual impairment and serve as a platform for evaluating drug efficacy and toxicity mechanisms.
COMMUNICATIONS BIOLOGY
(2022)
Article
Oncology
Julia Marzi, Matthias B. Stope, Melanie Henes, Andre Koch, Thomas Wenzel, Myriam Holl, Shannon L. Layland, Felix Neis, Hans Boesmueller, Felix Ruoff, Markus Templin, Bernhard Kraemer, Annette Staebler, Jakob Barz, Daniel A. Carvajal Berrio, Markus Enderle, Peter M. Loskill, Sara Y. Brucker, Katja Schenke-Layland, Martin Weiss
Summary: The study characterized the use of noninvasive physical plasma (NIPP) as a treatment for cervical intraepithelial neoplasia (CIN) and conducted a prospective trial, which showed a success rate of 95% in treating CIN1/2 patients with NIPP without significant post-intervention complications.
Article
Biochemistry & Molecular Biology
Nora Feuerer, Daniel A. Carvajal Berrio, Florian Billing, Soeren Segan, Martin Weiss, Ulrich Rothbauer, Julia Marzi, Katja Schenke-Layland
Summary: THP-1 and MDMs are widely used in vitro model systems for studying innate immunity, wound healing, and tissue regeneration, showing significant molecular changes in activated cells, emphasizing the importance of choosing the right cell type for research outcomes. Raman microspectroscopy is a sensitive tool for investigating cell-specific responses to activation stimuli and monitoring molecular changes in subcellular structures.
Article
Biochemistry & Molecular Biology
Myriam Holl, Marie-Lena Rasch, Lucas Becker, Anna-Lena Keller, Laura Schultze-Rhonhof, Felix Ruoff, Markus Templin, Silke Keller, Felix Neis, Franziska Kessler, Juergen Andress, Cornelia Bachmann, Bernhard Kraemer, Katja Schenke-Layland, Sara Y. Brucker, Julia Marzi, Martin Weiss
Summary: This study analyzed the use of plasma-activated media (PAM) as a therapeutic option to regulate cell type-specific proliferation and protein biosynthesis, thereby preventing pathological cell responses in the context of wound healing disorders. The results showed that PAM treatment had cell type-specific molecular responses, leading to growth retardation, cell cycle arrest, and apoptosis in peritoneal fibroblasts, while maintaining the anti-adhesive potential of peritoneal mesothelial cells. Additionally, PAM treatment reduced the expression and secretion of pro-adhesive cytokines and extracellular matrix proteins in peritoneal fibroblasts.
Article
Health Care Sciences & Services
Dominik Dannehl, Lea L. Volmer, Martin Weiss, Sabine Matovina, Eva-Maria Grischke, Ernst Oberlechner, Anna Seller, Christina B. Walter, Markus Hahn, Tobias Engler, Sara Y. Brucker, Andreas D. Hartkopf
Summary: Abemaciclib combined with endocrine therapy significantly improves invasive disease-free survival in clinical high-risk patients with HR+/Her2- early breast cancer. In a real-world setting, fewer patients are eligible for adjuvant treatment with abemaciclib compared to the study. Breast care units face significant patient burdens and require specific care concepts to strengthen therapy adherence and further research.
JOURNAL OF PERSONALIZED MEDICINE
(2022)
Article
Oncology
Dominik Dannehl, Tobias Engler, Lea L. Volmer, Annette Staebler, Anna K. Fischer, Martin Weiss, Markus Hahn, Christina B. Walter, Eva-Maria Grischke, Falko Fend, Florin-Andrei Taran, Sara Y. Brucker, Andreas D. Hartkopf
Summary: This study analyzed the impact of using the RS score to guide adjuvant treatment decisions in HR+/HER2- breast cancer patients and found that this method can significantly reduce the use of chemotherapy.
Article
Oncology
Andreas Nitsch, Caroline Sander, Benedikt Eggers, Martin Weiss, Eva Egger, Franz-Josef Kramer, Holger H. H. Erb, Alexander Mustea, Matthias B. B. Stope
Summary: This study investigated the use of non-invasive physical plasma (NIPP) in treating renal cell carcinoma (RCC). The results showed that NIPP significantly reduced cell growth and motility of RCC cells, and induced cell death. Cellular analysis revealed increased membrane permeability after NIPP treatment, which may contribute to the inhibition of cancer cell activities. These findings suggest that NIPP treatment could be a promising, innovative, and non-chemical option for RCC therapy.
Article
Obstetrics & Gynecology
Lukas Schimunek, Katharina Schoepp, Michael Wagner, Sara Y. Y. Brucker, Juergen Andress, Martin Weiss
Summary: This study evaluates the feasibility of using a commercially available hyperspectral imaging (HSI) system for detecting CIN. By obtaining spectral fingerprints of CIN patients and normal tissue, significant spectral differences were found in the 555-585 wavelength range, indicating the potential of HSI for CIN diagnosis.
ARCHIVES OF GYNECOLOGY AND OBSTETRICS
(2023)
Proceedings Paper
Metallurgy & Metallurgical Engineering
Gerd Reichardt, Manuel Henn, Paul Reichle, Daniel Hemming, Georg Umlauf, Kim Riedmuller, Rudolf Weber, Jakob Barz, Mathias Liewald, Thomas Graf, Gunter E. M. Tovar
Summary: Traditional lubricants used in deep-drawing processes may contain harmful substances, but volatile lubricants, such as CO2 or N2, offer a solution to this issue. By injecting volatile media under high pressure into the friction zone, these lubricants help separate the tool from the metal surface.
TMS 2021 150TH ANNUAL MEETING & EXHIBITION SUPPLEMENTAL PROCEEDINGS
(2021)
