Article
Business, Finance
Stefan Lyocsa, Tomas Vyrost, Tomas Plihal
Summary: Studies have found that stock market declines tend to lead to slower economic growth in the following two to four quarters. However, this relationship is not linear, as it weakens when market prices increase. This conclusion holds true for most developed countries.
FINANCE RESEARCH LETTERS
(2021)
Article
Construction & Building Technology
Stefanie Anne Weckwerth, Robert Leopold Temme, Robert J. Flatt
Summary: This study introduces a method to demonstrate competitive adsorption between polycarboxylate ether (PCE) molecules of different molecular structures. By analyzing a fundamental thermodynamic model, the research reveals the impact of dispersity in charge and backbone length on the adsorption behavior of PCEs, contributing to a deeper understanding of the molecular-level working mechanism of PCEs.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Polymer Science
Daniel L. Vigil, Timothy Quah, Dan Sun, Kris T. Delaney, Glenn H. Fredrickson
Summary: Using self-consistent field theory, the phase boundaries between periodic microphases for linear, comb-like, and bottlebrush diblock copolymers were mapped, revealing a universal phase diagram for sphere phases including A15 and sigma phases. However, a transition from comb-like to bottlebrush scaling with architectural parameter variation was not observed.
Article
Construction & Building Technology
Chaoyang Zhang, Xiangming Kong, Jianwei Yu, Daniel Jansen, Joachim Pakusch, Shengxian Wang
Summary: The correlation between the adsorption behavior of colloidal polymers on cement grains and the yield stress of fresh cement pastes was studied, revealing that higher charge density and lower glass transition temperature of polymers facilitate their adsorption on cement grains. The bridging effect of the adsorbed polymer particles peaks at a surface coverage ratio of approximately 20%. The reduction in yield stress of fresh cement pastes after the adsorption plateau is attributed to the decreased interaction force between cement grains due to the presence of the adsorbed polymer layer.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Junwoo Lee, Duck Hoon Lee, Younghoon Kim, Jin Young Park, Hyung Ryul You, Taiho Park, Minjun Kim, Jongmin Choi
Summary: A novel benzodifuran-based hole-transporting material (HTM) was synthesized, which exhibited improved optoelectrical properties, solubility, and thermal stability compared to a typical benzodithiophene-based HTM. The benzodifuran-based HTM showed enhanced performance in quantum dot solar cells, achieving higher open-circuit voltage and power conversion efficiency.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Biotechnology & Applied Microbiology
Jun Ye, Renjie Li, Yanfang Yang, Wujun Dong, Yujie Wang, Hongliang Wang, Tong Sun, Lin Li, Qiqi Shen, Caiyun Qin, Xiaoyan Xu, Hengfeng Liao, Yiqun Jin, Xuejun Xia, Yuling Liu
Summary: The study found that PTX emulsion exhibited favorable colloidal stability and superior in vitro antitumor efficacy compared to PTX liposome and PTX nanoparticle. However, in an immunocompetent mouse model, all three types of PTX nanoformulations showed no significant differences in in vivo antitumor efficacy. Additionally, all PTX nanoformulations induced lymphopenia and immunosuppression.
JOURNAL OF NANOBIOTECHNOLOGY
(2021)
Article
Chemistry, Applied
Fuge Niu, Qiuping Zhang, Jiao Yu, Yucui Huo, Lingchang Zhuo, Debao Niu, Weichun Pan
Summary: This study investigated the influence of different preparation methods on the interfacial adsorption behavior of biological macromolecular colloidal particles by preparing three types of emulsions. The emulsions with high viscosity or severe aggregation showed longer decay time, while those treated with ultrasonic emulsification exhibited smaller particle size and better stability. The results suggest that moderate energy input and longer-acting duration are necessary for emulsions stabilized by biological macromolecular colloidal particles.
FOOD HYDROCOLLOIDS
(2021)
Article
Physics, Multidisciplinary
Carolina van Baalen, Jacopo Vialetto, Lucio Isa
Summary: This study explores the control of crystallization of colloidal particles at oil-water interfaces using oil-soluble electrolytes. The results show that the repulsion among particles can be continuously tuned by introducing nanomolar amounts of an organic salt into the oil.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Physical
Hamid Gharanjig, Kamaladin Gharanjig, Mohammad Amin Sarli, Arif Taner Ozguney, Mojtaba Jalili, Aylin Gharanjik, Shima Jahankaran
Summary: Six different polymers were synthesized to investigate the impact of the chemical structure of comb-like polycarboxylates on hydrophobic dye dispersion. The results showed that lower molecular weight polymers resulted in dispersion instability, while higher molecular weight and side chain density polymers formed more stable dye dispersions.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Wei Li, Kris T. Delaney, Glenn H. Fredrickson
Summary: The study developed a SCFT method to investigate polymer-mediated colloidal interactions, focusing on depletion effects and exploring mean-field interactions under different physical conditions. The results demonstrated good agreement with previous studies and experiments, extending the work to new regimes and discussing the mechanisms of attraction and repulsion along with the influence of individual factors.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Business, Finance
Yanlin Shi
Summary: This paper proposes a novel measure of information share called tail information share (TIS), which uses copulas to model the tail dependence of price innovations. The paper discusses its detailed technical properties, including unique identifiability, estimation procedures, and statistical properties. The proposed TIS improves upon two commonly used measures by providing meaningful economic rationale and unique identifiability. Simulation studies show that TIS can provide more accurate estimates of market-specific contributions to price discovery when tail dependence is present. Additionally, the paper demonstrates the asymptotic consistency and efficiency of TIS estimators. An empirical illustration is provided using a new dataset of high-frequency crude oil futures.
JOURNAL OF FINANCIAL ECONOMETRICS
(2023)
Article
Chemistry, Analytical
Yeji Kim, Yuuki Inoue, Hijiri Hasegawa, Yasukazu Yoshida, Toshiya Sakata
Summary: This study introduces a novel method for detecting DNA methylation through conformational transition to G-quadruplex, using a solution-gated field-effect transistor (SG-FET) without the need for labeled materials. The method involves grafting a dense hydrophilic polymer brush onto the SG-FET sensor surface to reduce electrical noise and achieve high signal-to-noise ratio analysis of DNA sequences.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Marion Schvartz, Florent Saudrais, Stephanie Devineau, Stephane Chedin, Frederic Jamme, Jocelyne Leroy, Karol Rakotozandriny, Olivier Tache, Guillaume Brotons, Serge Pin, Yves Boulard, Jean-Philippe Renault
Summary: Microplastic particles of polyethylene and polypropylene are highly present in aquatic environments and can be stabilized by a protein corona formed by proteins in biological media. This stability depends on various factors such as the particle's properties and the quality of the protein corona. Controlling these factors with proteins can offer potential applications in microplastic pollution control and remediation.
Article
Chemistry, Multidisciplinary
Lechuan Zhang, Huda A. A. Jerri, Michael A. A. Bevan
Summary: The deposition of silica microparticles on glass substrates was investigated as a function of cationic polymer-anionic surfactant composition and shear rate. The study demonstrated the ability to control deposition behavior by designing initial polymer-surfactant compositions and shear profiles. The particle trajectory analysis developed in this work provides an assay for screening composition-dependent colloidal deposition in various materials and applications.
Article
Agricultural Engineering
Jiraporn Wongkhat, Cattaleeya Pattamaprom
Summary: This research discovered that enzymatic treatment can enhance the colloidal stability of concentrated natural rubber latex while reducing the use of chemicals and improving the quality of rubber products.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Correction
Polymer Science
Peter Kosovan, Tobias Richter, Christian Holm
Article
Chemistry, Physical
Jakub Kubecka, Filip Uhlik, Peter Kosovan
Article
Polymer Science
A. Vagias, K. Sergelen, K. Koynov, P. Kosovan, J. Dostalek, U. Jonas, W. Knoll, G. Fytas
Article
Chemistry, Physical
Lucie Nova, Filip Uhlik, Peter Kosovan
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2017)
Article
Chemistry, Physical
Oleg Rud, Tobias Richter, Oleg Borisov, Christian Holm, Peter Kosovan
Article
Engineering, Chemical
Oleg Rud, Oleg Borisov, Peter Kosovan
Article
Polymer Science
Anastasiia Murmiliuk, Peter Kosovan, Miroslav Janata, Karel Prochazka, Filip Uhlik, Miroslav Stepanek
Article
Chemistry, Physical
Roberto Fernandez-Alvarez, Lucie Nova, Filip Uhlik, Sami Kereiche, Mariusz Uchman, Peter Kosovan, Pavel Matejicek
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2019)
Article
Polymer Science
Jonas Landsgesell, Pascal Hebbeker, Oleg Rud, Raju Lunkad, Peter Kosovan, Christian Holm
Article
Polymer Science
Raju Lunkad, Anastasiia Murmiliuk, Zdenek Tosner, Miroslav Stepanek, Peter Kosovan
Summary: Peptides with ionizable side chains are weak ampholytes with charge regulating properties, primarily determined by the pKA of individual chains and modulated by electrostatic interactions. Sequence changes in peptides have a profound effect on conformation but minimal effect on total charge, due to unexpected cancellation of effects on individual groups. pH-dependent regulation of charge and conformation in flexible polyampholytes can be tuned based on pKA and amino acid sequence.
Article
Chemistry, Physical
Roman Stano, Lucie Nova, Filip Uhlik, Peter Kosovan
Review
Chemistry, Physical
Jonas Landsgesell, Lucie Nova, Oleg Rud, Filip Uhlik, David Sean, Pascal Hebbeker, Christian Holm, Peter Kosovan
Article
Engineering, Chemical
Tobias Richter, Jonas Landsgesell, Peter Kosovan, Christian Holm
Article
Chemistry, Physical
Raju Lunkad, Anastasiia Murmiliuk, Pascal Hebbeker, Milan Boublik, Zdenek Tosner, Miroslav Stepanek, Peter Kosovan
Summary: This study quantitatively analyzed the ionization behavior of weak ampholytes using a flexible polymer model and oligopeptides as model ampholytes, showing differences in charge states due to electrostatic interactions between charged groups and conformational flexibility. By comparing simulations with experimental results, the model's reliability in predicting the charge state of various peptide sequences was demonstrated, providing a foundation for predictive bottom-up design of charge-regulating systems.
MOLECULAR SYSTEMS DESIGN & ENGINEERING
(2021)
Article
Chemistry, Physical
Alexander D. Kazakov, Varvara M. Prokacheva, Filip Uhlik, Peter Kosovan, Frans A. M. Leermakers
Summary: This study presents three methods for modeling and simulating polymer stars, comparing their performance under different solvent qualities. The MD approach is the most accurate but suffers from convergence, while the mean-field approach works similarly in all solvent qualities but lacks quantitative accuracy. The MC-SCF hybrid method shows good agreement with scaling predictions across the whole range of solvent quality values.
Article
Chemistry, Physical
Yiping Yin, Zhe Wang, Hua Zou
Summary: This study presents a novel method for preparing dimpled polymer-silica nanocomposite particles using interfacial swelling-based seeded polymerization. The optimized conditions allow for a relatively high percentage of dimpled particles to be achieved.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Chemistry, Physical
Vladislav S. Petrovskii, Stepan I. Zholudev, Igor I. Potemkin
Summary: This article investigates the behavior of linear and ring polypeptide chains in aqueous solution and explores the properties of the complexes formed by these chains with oppositely charged surfactants. The results demonstrate that the complexes of linear supercharged unfolded polypeptides and the corresponding surfactants exhibit impressive adhesive properties.
Article
Chemistry, Physical
Merve Cevik, Serkan Dikici
Summary: Cardiovascular diseases are a leading cause of death globally, and vascular grafts are a promising treatment option. This study focuses on tissue-engineered vascular grafts (TEVGs) using decellularized parsley stems as a potential biomaterial. The decellularized parsley stems showed suitable properties for TEVGs, providing a suitable environment for human endothelial cells to form a pseudo endothelium. This study showcases the potential of using parsley stems for TEVGs.
Article
Chemistry, Physical
Gustavo A. Vasquez-Montoya, Tadej Emersic, Noe Atzin, Antonio Tavera-Vazquez, Ali Mozaffari, Rui Zhang, Orlando Guzman, Alexey Snezhko, Paul F. Nealey, Juan J. de Pablo
Summary: The optical properties of liquid crystals are typically controlled by electric fields. In this study, we investigate the effects of microfluidic flows and acoustic fields on the molecular orientation and optical response of nematic liquid crystals. We identify several previously unknown structures and explain them through calculations and simulations. These findings hold promise for the development of new systems combining sound, flow, and confinement.
Article
Chemistry, Physical
Xinjun Wu, Xin Guan, Shushu Chen, Jiangpeng Jia, Chongyi Chen, Jiawei Zhang, Chuanzhuang Zhao
Summary: This research presents a novel shape memory hydrogel with a remodelable permanent shape and programmable cold-induced shape recovery behavior. The hydrogel is prepared using specific treatment methods to achieve shape fixation by heating and shape recovery by cooling. Additionally, deformable devices can be obtained by assembling hydrogel blocks with different concentrations.
Article
Chemistry, Physical
Rebecca Hengsbach, Gerhard Fink, Ulrich Simon
Summary: This study examines the properties of DNA functionalized pNipmam microgels and pure pNipmam microgels at different concentrations of sodium chloride and in PBS solutions using temperature dependent H-1-NMR measurements. The results show that DNA modification affects the volume phase transition temperature and the addition of salt and PBS further enhances this effect.
Article
Chemistry, Physical
Ningyi Li, Junhong Li, Lijingting Qing, Shicheng Ma, Yao Li, Baohui Li
Summary: This paper investigates the self-assembly behavior of colloids with competing interactions under spherical confinement and finds that different ordered structures can be formed under different sized spherical confinements. Moreover, more perforated structures are formed in smaller spheres.