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1,043 Newest Publications about the topic freezing

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Viscous field-aligned water exhibits cubic-ice-like structural motifs

03-Jul-2018 | Juhan Matthias Kahk; Beng Hau Tan; Claus-Dieter Ohl; Duane Loh, Physical Chemistry Chemical Physics, 2018

Strong electric fields are known to greatly accelerate the freezing of water in molecular dynamics simulations, and have also been shown to affect the thermodynamics of the phase transition. In this work, a mechanistic explanation for field-induced crystallization of water is presented. Due to ...

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The discovery of a freezing-induced peptide ligation during the total chemical synthesis of human interferon-ε

03-Jul-2018 | Yin-He Yang; Bin Di; Da-Song Yang, Organic & Biomolecular Chemistry, 2018

A counterintuitive freezing-induced peptide ligation was discovered in the total synthesis of human interferon-ε (hIFN-ε) which blocks HIV infection through unique mechanisms. The successful synthesis of hIFN-ε (187 amino acids) in this research laid the foundation for related anti-AIDS drug ...

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Sustainability, Vol. 10, Pages 2251: Wasting of Fresh-Packed Bread by Consumers—Influence of Shopping Behavior, Storing, Handling, and Consumer Preferences

29-Jun-2018 | Østergaard, Sofie ; Hanssen, Ole Jørgen, Sustainability, 2018

Sustainability, Vol. 10, Pages 2251: Wasting of Fresh-Packed Bread by Consumers—Influence of Shopping Behavior, Storing, Handling, and Consumer Preferences Sustainability doi: 10.3390/su10072251 Authors: Sofie Østergaard Ole Jørgen Hanssen There are few scientific papers dealing ...

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Fast determination of neonicotinoid insecticides in beeswax by ultra-high performance liquid chromatography-tandem mass spectrometry using an enhanced matrix removal-lipid sorbent for clean-up

24-Jun-2018 | Author(s): Silvia Valverde, Ana María Ares, José Luis Bernal, María Jesús Nozal, José Bernal, Microchemical Journal, 2018

Publication date: November 2018 Source:Microchemical Journal, Volume 142 Author(s): Silvia Valverde, Ana María Ares, José Luis Bernal, María Jesús Nozal, José Bernal This study is concerned with the development of a simple, rapid analytical method for simultaneously determining ...

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Fatty acid chemical mediator provides insights into the pathology and treatment of Parkinson’s disease [Neuroscience]

19-Jun-2018 | Cesar V. Borlongan, Proceedings of the National Academy of Sciences current issue, 2018

Parkinson’s disease (PD) ranks as the second-most prevalent neurodegenerative disorder that afflicts the aging population (1). Hallmark neuropathological features of PD consist of dopaminergic cell loss in the substantia nigra, striatal dopamine deficiency, and formation of intracellular ...

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A molecular perspective for global modeling of upper atmospheric NH3 from freezing clouds [Earth, Atmospheric, and Planetary Sciences]

12-Jun-2018 | Cui Ge; Chongqin Zhu; Joseph S. Francisco; Xiao Cheng Zeng; Jun Wang, Proceedings of the National Academy of Sciences current issue, 2018

The retentions of gases upon freezing of water from available studies are conflicting. Using molecular dynamic simulations, we have revealed that the retention efficiency of NH3 upon freezing cloud is close to 0 rather than 1 during deep convection. Our results further provide theoretical ...

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Clarifying the role of cryo- and lyo-protectants in the biopreservation of proteins

28-May-2018 | Andrea Arsiccio; Roberto Pisano, Physical Chemistry Chemical Physics, 2018

Biopharmaceuticals are frequently stored in the frozen state to avoid rapid degradation. Moreover, therapeutic proteins are frequently made into a dried form to provide long-term storage. However, both freezing and drying stresses can result in protein unfolding and aggregation. Thus, a proper ...

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Molecular dynamics simulation of charged colloids confined between hard walls: pre-melting and pre-freezing across the BCC–fluid coexistence

27-May-2018 | Mojtaba Eshraghi; Jürgen Horbach, Soft Matter, 2018

Molecular dynamics (MD) computer simulations are used to study the structure of hard-core Yukawa systems confined between two parallel hard walls. States around the coexistence between a fluid and a body-centered cubic (BCC) crystal are considered. In all cases a pronounced layering in the ...

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Combined effect of hydrogen bonding interactions and freezing of rotameric equilibrium on the enhancement of photostability

26-May-2018 | Barbara Golec; Krzysztof Nawara; Alexandr Gorski; Randolph P. Thummel; Jerzy Herbich; Jacek Waluk, Physical Chemistry Chemical Physics, 2018

The photophysics and photostability of 12,13-dihydro-5H-indolo[3,2-c]acridine (IA), a rigid bifunctional indole derivative with proton donor/acceptor functionalities, can be drastically changed by the environment. The formation of hydrogen bonds with alcohols leads to a significant decrease of ...

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A general formulation of the quasiclassical trajectory method for reduced-dimensionality reaction dynamics calculations

25-May-2018 | Tibor Nagy; Anna Vikár; György Lendvay, Physical Chemistry Chemical Physics, 2018

Dimension reduction by freezing the unimportant coordinates is widely used in intramolecular and reaction dynamics calculations when the solution of the accurate full-dimensional nuclear Schrödinger equation is not feasible. In this paper we report on a novel form of the exact classical ...

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