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article

Expression and release of progalanin in fibroblasts

Hiroyuki Yamamoto, Kazuaki Iguchi, Keiko Unno, Kazuhiko Kaji, more

Regulatory Peptides > 2014 > 194-195 > Complete > 55-62

Galanin is a neuropeptide expressed in the central and peripheral nervous systems. Galanin is known to be biosynthesized in neural and endocrine cells, but little evidence exists for its synthesis in other cells. In this study, we explored galanin-releasing nonneural cells using radioimmunoassay, finding that some fibroblasts produced and released the galanin-like immunoreactive component (galanin-LI)...

article

Análisis estructural y morfotectónico en los municipios San Cristóbal y Candelaria, Cuba Occidental: contribución a los estudios de peligrosidad sísmica de la Falla Pinar

Alexis Ordaz Hernández, José Ramón Hernández Santana, Carlos Enrique Cofiño Arada, Ana Patricia Méndez Linares, more

Investigaciones Geograficas, Boletin del Instituto de Geografia > 2013 > 2013 > 82 > 7-23

La investigación se enfoca en revelar las principales expresiones morfotectónicas del relieve, como contribución al estudio de la sismicidad moderada del territorio. El análisis morfoestructural se combina con resultados del análisis de estructuras a escala mesoscópica, para aportar elementos sobre la dirección preferencial de los esfuerzos tectónicos que determinaron el relieve contemporáneo. En...

article

Effect of non‐thermal acidic and alkaline modifications on the structural, pasting, rheological, and functional properties of cassava (Manihot esculenta) starch

Leonardo A. Alonso‐Gomez, Angie J. Gonzalez‐Hernandez, Andrés F. Fragua‐Cruz, Oscar Y. Barrón‐García, more

Journal of Food Science > 89 > 10 > 6601 - 6615

This study aimed to investigate the effects of acid or alkali modification of isolated cassava starch (ICS) on its physicochemical properties. Acetic acid concentrations of 5%, 10%, and 20% v/v (0.87, 1.73, and 3.46 M, respectively) and calcium hydroxide concentrations of 0.15%, 0.20%, and 0.30% w/w (0.02, 0.025, and 0.04 M, respectively) were tested independently and compared with untreated isolated...

article

Relationship between Structure and Performance of Atomic‐Scale Electrocatalysts for Water Splitting

Jungsue Choi, Sohyeon Seo, Minsu Kim, Yeonsu Han, more

Small > 20 > 39 > n/a - n/a

Atomic‐scale electrocatalysts greatly improve the performance and efficiency of water splitting but require special adjustments of the supporting structures for anchoring and dispersing metal single atoms. Here, the structural evolution of atomic‐scale electrocatalysts for water splitting is reviewed based on different synthetic methods and structural properties that create different environments...

article

Ba₃Zn₄Si₄O₁₅: A Novel Centrosymmetric Silicate with Isolated SiO₄ and Si₂O₇ Units

Aihaimaitijiang Ababaikeri, Gulimeikereyi Tuniyazi, Yanhui Zhang, Dilnur Malik

Zeitschrift für anorganische und allgemeine Chemie > 650 > 18 > n/a - n/a

A new silicate Ba₃Zn₄Si₄O₁₅ (BZSO), was synthesized by the high‐temperature solution method in the open air, and the structure was determined using single‐crystal X‐ray diffraction data. The compound can be regarded as a derivative of α‐SiO₂ tetrahedral framework. The structural analysis indicates that it crystallizes in the centrosymmetric space group C2/c (No. 15) with lattice parameters a=19.3931(12)...

article

One‐Step Organic Synthesis of 18β‐Glycyrrhetinic Acid‐Anthraquinone Ester Products: Exploration of Antibacterial Activity and Structure–Activity Relationship, Toxicity Evaluation in Zebrafish

Zhaoyi Yang, Xueyan Li, Wei Liu, Guangyue Wang, more

Chemical Biology & Drug Design > 104 > 3 > n/a - n/a

To combine the activity characteristics of 18β‐glycyrrhetinic acid (18β‐GA) and anthraquinone compounds (rhein and emodin), reduce toxicity, and explore the structure–activity relationship (SAR) of anthraquinones, 18β‐GA‐anthraquinone ester compounds were synthesized by one‐step organic synthesis. The products were separated and purified by HPLC and characterized by NMR and EI‐MS. It was finally determined...

article

Structured replacement policies for a system subject to random mission types

Rui Zheng

Naval Research Logistics (NRL) > 71 > 7 > 1055 - 1069

This paper optimizes condition‐based replacement policies for a mission‐oriented system. The key challenge in our problem is that the system does not work under a fixed mission type but is subject to an infinite sequence of random types of missions assigned in a Markovian manner, which is realistic in many practical situations. The mission process modulates the deterioration process. Taking advantage...

article

Exploring novel double perovskite SrEuTiFeO₆: Synthesis, microstructural, optical, and dielectric properties

L. Boudad, M. Taibi, A. El Boukili, A. Belayachi, more

Journal of the American Ceramic Society > 107 > 11 > 7397 - 7408

The novel double perovskite oxide SrEuTiFeO₆ was synthesized using the solid‐state reaction method. X‐ray diffraction analysis, complemented by Rietveld refinement, confirmed that this material crystallizes in a cubic double perovskite structure with the Pm3̅m space group and revealed cationic disorder at both the A (Sr, Eu) and B (Ti, Fe) sites. Crystallite size and lattice strain were determined...

article

Geometric descriptors for beta turns

Nicholas E. Newell

Protein Science > 33 > 9 > n/a - n/a

Beta turns, in which the protein backbone abruptly changes direction over four amino acid residues, are the most common type of protein secondary structure after alpha helices and beta sheets and play key structural and functional roles. Previous work has produced classification systems for turn geometry at multiple levels of precision, but these operate in backbone dihedral‐angle (Ramachandran) space,...

article

Advanced multimaterial shape optimization methods as applied to advanced manufacturing of wind turbine generators

Latha Sethuraman, Andrew Glaws, Miles Skinner, M. Parans Paranthaman

Wind Energy > 27 > 8 > 767 - 796

Currently, many utility‐scale wind turbine generator original equipment manufacturers are dependent on imported rare earth permanent magnets, which are susceptible to market risks from cost instability. To lower the production costs of these generators and stay competitive in the market, several small wind manufacturers are pursuing continuous improvements to both generator design and manufacturing...

article

Orthogonal effect of exchange and correlation parameters in density functional theory to compute geometric and spectroscopic quantities

Aurélien Moncomble, Jean‐Paul Cornard

Journal of Computational Chemistry > 45 > 24 > 2071 - 2079

The influence of the composition of the functional used for density functional theory computations on one structural parameter (a dihedral angle) and a spectroscopic parameter (absorption wavelength) is assessed in this study on the basis of two molecules (flavonols). In this kind of molecules, these two parameters should be correlated according to the nature of the electronic transition involved...

article

Investigating the effect of form curvature on diagrid tall buildings considering wind loads

Aram Alizadegan, Amirreza Ardekani, Mahmood Golabchi

The Structural Design of Tall and Special Buildings > 33 > 10 > n/a - n/a

The use of curved forms in tall buildings has increased recently due to their structural and esthetic advantages. Diagrid structures are typically used for these buildings because of their ability to express curved forms. There are, however, few studies about the curvature of tall buildings. This paper examines the effect of curvature on the wind force on tall curved buildings with diagrid system...

article

Phase Identification and Discovery of an Elusive Polymorph of Drug‐Polymer Inclusion Complex Using Automated 3D Electron Diffraction

Molly Lightowler, Shuting Li, Xiao Ou, Jungyoun Cho, more

Angewandte Chemie International Edition > 63 > 16 > n/a - n/a

3D electron diffraction (3D ED) has shown great potential in crystal structure determination in materials, small organic molecules, and macromolecules. In this work, an automated, low‐dose and low‐bias 3D ED protocol has been implemented to identify six phases from a multiple‐phase melt‐crystallisation product of an active pharmaceutical ingredient, griseofulvin (GSF). Batch data collection under...

article

Phase Identification and Discovery of an Elusive Polymorph of Drug‐Polymer Inclusion Complex Using Automated 3D Electron Diffraction

Molly Lightowler, Shuting Li, Xiao Ou, Jungyoun Cho, more

Angewandte Chemie > 136 > 16 > n/a - n/a

3D electron diffraction (3D ED) has shown great potential in crystal structure determination in materials, small organic molecules, and macromolecules. In this work, an automated, low‐dose and low‐bias 3D ED protocol has been implemented to identify six phases from a multiple‐phase melt‐crystallisation product of an active pharmaceutical ingredient, griseofulvin (GSF). Batch data collection under...

article

Space debris capture - about new methods of tethered space net opening by tubular booms

Tomasz Pałgan, Adam Dacko, Mirosław Rataj, Szymon Polak

Artificial Satellites : Journal of Planetary Geodesy > 2024 > Vol. 59, No. 1 > 1--10

Nowadays, space debris is one of the main subjects of discussion regarding satellites in Earth’s orbit. Right now, there are about 26,000 orbiting satellites and only few of these satellites are operational. Recently, the Polish space sector has been strongly growing and delivering instruments working in space. The first part of this paper describes the several space instruments designed in the Space...

article

Effect of addition of soybean protein isolate on the retrogradation of rice starch

Yang Yang, Na Wu, Can Zhang, Xin Bian, more

International Journal of Food Science & Technology > 59 > 4 > 2446 - 2457

In this study, a hybrid system was prepared by mixing rice starch (RS) with different mass fractions (0%–10% dry weight) of soy protein isolate (SPI) to investigate its retrogradation characteristics during storage. The results showed that the addition of SPI led to an increase in pasting temperature and a decrease in setback (SB) and aging rate (P < 0.05). When the level of SPI was increased to...

article

Two‐Dimensional Tandem Mass Spectrometry for Biopolymer Structural Analysis

MyPhuong T. Le, Dylan T. Holden, Jeremy M. Manheim, Eric T. Dziekonski, more

Angewandte Chemie International Edition > 63 > 9 > n/a - n/a

Biopolymer analysis, including proteomics and glycomics, relies heavily on the use of mass spectrometry for structural elucidation, including sequence determination. Novel methods to improve sample workup, instrument performance, and data analysis continue to be developed to address shortcomings associated with sample preparation, analysis time, data quality, and data interpretation. Here, we present...

article

Two‐Dimensional Tandem Mass Spectrometry for Biopolymer Structural Analysis

MyPhuong T. Le, Dylan T. Holden, Jeremy M. Manheim, Eric T. Dziekonski, more

Angewandte Chemie > 136 > 9 > n/a - n/a

Biopolymer analysis, including proteomics and glycomics, relies heavily on the use of mass spectrometry for structural elucidation, including sequence determination. Novel methods to improve sample workup, instrument performance, and data analysis continue to be developed to address shortcomings associated with sample preparation, analysis time, data quality, and data interpretation. Here, we present...

article

Finite element analysis and computational fluid dynamic study of hybrid composite‐based offshore wind turbines

M. Appadurai, E. Fantin Irudaya Raj, M. Chithambara Thanu, T. Lurthu Pushparaj

Materialwissenschaft und Werkstofftechnik > 54 > 11 > 1362 - 1377

Offshore wind turbines are utilized for wind power harvesting through wind farms installed in bodies of water, normally at sea. The blades of the wind turbine resist the airflow and rotate and generate useful mechanical energy. Most of these wind blades are made of synthetic glass and carbon fibers. Synthetic fiber has higher mechanical strength but is non‐biodegradable in nature. The hybrid synthetic...

article

Front Cover: Zn‐Based Metal–Organic Frameworks Using Triptycene Hexacarboxylate Ligands: Synthesis, Structure, and Gas‐Sorption Properties (Chem. Eur. J. 64/2023)

Koh Sugamata, Shoko Yamada, Daichi Yanagisawa, Natsuki Amanokura, more

Chemistry – A European Journal > 29 > 64 > n/a - n/a

Honeycomb‐shaped pores in metal–organic frameworks (MOFs) are capable of storing substantial quantities of gas, and especially porous materials with the capacity to adsorb and securely retain considerable amounts of hydrogen and carbon dioxide have attracted attention. Here, we report Zn‐MOFs with triptycene‐based ligands, which feature honeycomb‐shaped pores that exhibit efficient storage capabilities...

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Search results

Expression and release of progalanin in fibroblasts

Análisis estructural y morfotectónico en los municipios San Cristóbal y Candelaria, Cuba Occidental: contribución a los estudios de peligrosidad sísmica de la Falla Pinar

Effect of non‐thermal acidic and alkaline modifications on the structural, pasting, rheological, and functional properties of cassava (Manihot esculenta) starch

Relationship between Structure and Performance of Atomic‐Scale Electrocatalysts for Water Splitting

Ba₃Zn₄Si₄O₁₅: A Novel Centrosymmetric Silicate with Isolated SiO₄ and Si₂O₇ Units

One‐Step Organic Synthesis of 18β‐Glycyrrhetinic Acid‐Anthraquinone Ester Products: Exploration of Antibacterial Activity and Structure–Activity Relationship, Toxicity Evaluation in Zebrafish

Structured replacement policies for a system subject to random mission types

Exploring novel double perovskite SrEuTiFeO₆: Synthesis, microstructural, optical, and dielectric properties

Geometric descriptors for beta turns

Advanced multimaterial shape optimization methods as applied to advanced manufacturing of wind turbine generators

Orthogonal effect of exchange and correlation parameters in density functional theory to compute geometric and spectroscopic quantities

Investigating the effect of form curvature on diagrid tall buildings considering wind loads

Phase Identification and Discovery of an Elusive Polymorph of Drug‐Polymer Inclusion Complex Using Automated 3D Electron Diffraction

Phase Identification and Discovery of an Elusive Polymorph of Drug‐Polymer Inclusion Complex Using Automated 3D Electron Diffraction

Space debris capture - about new methods of tethered space net opening by tubular booms

Effect of addition of soybean protein isolate on the retrogradation of rice starch

Two‐Dimensional Tandem Mass Spectrometry for Biopolymer Structural Analysis

Two‐Dimensional Tandem Mass Spectrometry for Biopolymer Structural Analysis

Finite element analysis and computational fluid dynamic study of hybrid composite‐based offshore wind turbines

Front Cover: Zn‐Based Metal–Organic Frameworks Using Triptycene Hexacarboxylate Ligands: Synthesis, Structure, and Gas‐Sorption Properties (Chem. Eur. J. 64/2023)

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