6,653 results match your criteria ACS omega[Journal]


In Vivo and In Vitro Study of -Methyltaurine on Pharmacokinetics and Antimuscle Atrophic Effects in Mice.

ACS Omega 2020 May 8;5(19):11241-11246. Epub 2020 May 8.

Department of Biosciences and Biotechnology, Fukui Prefectural University, 4-1-1 Matsuokakenjojima, Eiheiji-cho, Yoshida-gun, Fukui 910-1195, Japan.

Various types of seaweed are potential functional foods as they contain multiple bioactive compounds. -Methyltaurine (NMT) is a taurine derivative metabolite found in a type of red algae. The functional actions of NMT in mammalian animals have not been investigated, but the parent compound, taurine, possesses a variety of cellular actions. Read More

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http://dx.doi.org/10.1021/acsomega.0c01588DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241010PMC

Suppressing the Ring Stain Effect with Superhydrophilic/Superhydrophobic Patterned Surfaces.

ACS Omega 2020 May 8;5(19):11235-11240. Epub 2020 May 8.

The Experiment Center, Shandong University of Traditional Chinese Medicine, Jinan 250355, China.

The ring stain phenomenon is a critical hindrance to the distribution of the solute during drying for biochemical assays and materials deposition. Herein, we developed a substrate, characterized with hydrophilic spots surrounded by hydrophobic areas, to suppress the ring stain effect, and fabricated four kinds of patterned surfaces to investigate the relationship between the surface free energy and ring-suppressing performance. We found that during the evaporation process, a drop was constrained on the hydrophilic spot with a pinned contact line, and the ring stain effect was suppressed significantly. Read More

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http://dx.doi.org/10.1021/acsomega.0c01568DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241024PMC

UV/Vis Spectrometry-Based Analysis of Alkyl Ketene Dimer (AKD) Retention to Solve the Waxy Spot Problem in the Papermaking Process.

ACS Omega 2020 May 6;5(19):11227-11234. Epub 2020 May 6.

Department of Forest Sciences, College of Agriculture & Life Sciences, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, South Korea.

A sudden surge in the number of translucent and oval-shaped waxy spots caused a serious production loss of the papermaking process. The investigation of the spots revealed that the alkyl ketene dimer (AKD) sizing agent caused the waxy spot problem. A ultraviolet/visible (UV/vis) spectrometry method for the quantitative analysis of AKD was developed and used to reduce the waxy spot problem in paper products. Read More

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http://dx.doi.org/10.1021/acsomega.0c01374DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241030PMC

Mechanistic Insights into Zika Virus NS3 Helicase Inhibition by Epigallocatechin-3-Gallate.

ACS Omega 2020 May 4;5(19):11217-11226. Epub 2020 May 4.

School of Basic Sciences, Indian Institute of Technology Mandi, VPO Kamand, Mandi, Himachal Pradesh 175005, India.

Since 2007, repeated outbreaks of Zika virus (ZIKV) have affected millions of people worldwide and created a global health concern with major complications like microcephaly and Guillain Barre's syndrome. To date, there is not a single Zika-specific licensed drug present in the market. However, in recent months, several antiviral molecules have been screened against ZIKV. Read More

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http://dx.doi.org/10.1021/acsomega.0c01353DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241040PMC

Rapid Starch Evaluation in Fresh Cassava Root Using a Developed Portable Visible and Near-Infrared Spectrometer.

ACS Omega 2020 May 7;5(19):11210-11216. Epub 2020 May 7.

Laboratory of Near Infrared Technology, Department of Food Engineering, Faculty of Engineering at Kamphaeng Saen, Kasetsart University, Nakhon Pathom 73140, Thailand.

Starch content is an important parameter indicating the state of harvest maturity of fresh cassava root. Nowadays, the methods used for estimating the starch content in the field are the measurement of root weight, size, or snapping force. These methods are simple but the results are rather incorrect. Read More

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http://dx.doi.org/10.1021/acsomega.0c01346DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241029PMC

HPHT Synthesis: Effects of the Synergy of Pressure Regulation and Atom Filling on the Microstructure and Thermoelectric Properties of Yb Ba GaGe.

ACS Omega 2020 May 4;5(19):11202-11209. Epub 2020 May 4.

National Key Lab of Superhard Materials, Jilin University, Changchun 130012, China.

Type-I clathrate compounds Yb Ba GaGe have been synthesized by the high-pressure and high-temperature (HPHT) method rapidly. The effects of the synergy of atom filling and pressure regulation on the microstructure and thermal and electrical properties have been investigated. With the content of Yb atom increasing, the carrier concentration is improved, the electrical resistivity and the absolute Seebeck coefficient are decreased, while the thermal conductivity is reduced significantly. Read More

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http://dx.doi.org/10.1021/acsomega.0c01334DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241043PMC

Integrated Digital Microfluidic Platform for Colorimetric Sensing of Nitrite.

ACS Omega 2020 May 4;5(19):11196-11201. Epub 2020 May 4.

Shanghai Key Laboratory of Forensic Medicine (Academy of Forensic Science), Shanghai 200063, P. R. China.

In this paper, a palm-size digital microfluidic (DMF) platform integrated with colorimetric analysis was developed for quantifying the concentration of nitrite. To realize the on-chip repeatable colorimetric analysis, a novel printed circuit board (PCB)-based DMF chip was designed with an embedded aperture on the actuator electrode, forming a vertical light path for online measurement of the droplets. The capabilities of the DMF platform enable automatic manipulation of microliter-level droplets to implement Griess assay without the use of external systems such as syringe, pump, or valve, which provides the benefits including high flexibility, portability, miniature size, and low cost. Read More

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http://dx.doi.org/10.1021/acsomega.0c01274DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241042PMC

Research on the Wear Behavior of the Fixed Cone Liner of a Cone Crusher Based on the Discrete Element Method.

ACS Omega 2020 May 5;5(19):11186-11195. Epub 2020 May 5.

Shanghai Digital Design and Research Institute, Shanghai 200082, China.

Taking reducing the wear of the fixed cone liner of a cone crusher as the starting point, the movement and geometry parameters of the cone crusher are studied using the discrete element method. To improve the service life and working efficiency of the whole cone crusher. The UG model and discrete element Yade model of the cone crusher are established, and the different shapes of the tin ore are represented using Yade's preprocessor through eight different ways of particle combination and superposition. Read More

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http://dx.doi.org/10.1021/acsomega.0c01272DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241016PMC

Nanoscale Bubble Dynamics Induced by Damage of Graphene Liquid Cells.

ACS Omega 2020 May 5;5(19):11180-11185. Epub 2020 May 5.

Department of Aeronautics and Astronautics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.

Graphene liquid cells provide the highest possible spatial resolution for liquid-phase transmission electron microscopy. Here, in graphene liquid cells (GLCs), we studied the nanoscale dynamics of bubbles induced by controllable damage in graphene. The extent of damage depended on the electron dose rate and the presence of bubbles in the cell. Read More

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http://dx.doi.org/10.1021/acsomega.0c01207DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241020PMC

Arene-Ruthenium(II) Complexes Containing 11-Indeno[1,2-]quinoxalin-11-one Derivatives and Tryptanthrin-6-oxime: Synthesis, Characterization, Cytotoxicity, and Catalytic Transfer Hydrogenation of Aryl Ketones.

ACS Omega 2020 May 7;5(19):11167-11179. Epub 2020 May 7.

Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3 Lavrentiev Avenue, 630090 Novosibirsk, Russia.

A series of novel mono- and binuclear arene-ruthenium(II) complexes [(-cym)Ru(L)Cl] containing 11-indeno[1,2-]quinoxalin-11-one derivatives or tryptanthrin-6-oxime were synthesized and characterized by X-ray crystallography, IR, NMR spectroscopy, cyclic voltammetry, and elemental analysis. Theoretical calculations invoking singlet state geometry optimization, solvation effects, and noncovalent interactions were done using density functional theory (DFT). DFT calculations were also applied to evaluate the electronic properties, and time-dependent DFT was applied to clarify experimental UV-vis results. Read More

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http://dx.doi.org/10.1021/acsomega.0c01204DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241045PMC

Effects of a Matrix on Formation of Aromatic Compounds by Dehydrocyclization of -Pentane Using ZnZSM-5-AlO Composite Catalysts.

ACS Omega 2020 May 11;5(19):11160-11166. Epub 2020 May 11.

Division of Chemistry for Materials, Graduate School of Engineering, Mie University, Tsu 514-8507 Japan.

In this study, the effects of the combination of a mesoporous material and Zn-exchanged ZSM-5 on the activity and selectivity of aromatic compounds in dehydrocyclization of -pentane were investigated. A total of 65-85 wt % of ZnZSM-5 was mixed with 0-20 wt % of AlO and 15 wt % of the alumina-sol binder using a conventional kneading method. Dehydrocyclization of -pentane was performed using a fixed-bed reactor under the conditions of a H atmosphere and the temperature range of 450-550 °C. Read More

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http://dx.doi.org/10.1021/acsomega.0c01147DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241044PMC

Magnetic Ionic Liquids as Solvents for RNA Extraction and Preservation.

ACS Omega 2020 May 5;5(19):11151-11159. Epub 2020 May 5.

Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States.

Ribonucleic acid (RNA) is particularly sensitive to enzymatic degradation by endonucleases prior to sample analysis. In-field preservation has been a challenge for RNA sample preparation. Very recently, hydrophobic magnetic ionic liquids (MIL) have shown significant promise in the area of RNA extraction. Read More

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http://dx.doi.org/10.1021/acsomega.0c01098DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241037PMC

Additive Analytics: Easy Transformation of Low-Cost Fused Deposition Modeling Three-Dimensional Printers for HPTLC Sample Application.

ACS Omega 2020 May 6;5(19):11147-11150. Epub 2020 May 6.

Technical University of Munich, Werner Siemens-Chair of Synthetic Biotechnology (WSSB), Lichtenbergstraße 4, 85748 Garching, Germany.

Additive manufacturing, known as three-dimensional (3D) printing technologies, has revolutionized production in all domains of science and technology. Although 3D printing has a high impact on research and development, its capacity to implement low-cost, flexible, and robust sample handling automation has not been exploited in full. To this end, we have created a low-cost, robust, and easy-to-utilize kit to transform an off-the-shelf fused deposition modeling 3D printer to a thin layer chromatography (TLC) sample application device. Read More

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http://dx.doi.org/10.1021/acsomega.0c01096DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241005PMC

Adsorption Characteristics of CO/CH/N Ternary Mixtures on Anthracite from 293.15 to 353.15 K and Pressures Up to 7 MPa.

ACS Omega 2020 May 6;5(19):11138-11146. Epub 2020 May 6.

School of Energy and Environment, Key Laboratory of Clean Energy of Liaoning Province, Shenyang Aerospace University, No. 37 Daoyi South Avenue, Shenyang 110136, P.R. China.

We present the adsorption data of CO, CH, and N ternary mixtures on anthracite from 293.15 to 353.15 K and pressures up to 7 MPa obtained via a volumetric method. Read More

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http://dx.doi.org/10.1021/acsomega.0c01083DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241004PMC

Synthesis of Lipophilic Caffeoyl Alkyl Ester Using a Novel Natural Deep Eutectic Solvent.

ACS Omega 2020 May 7;5(19):11131-11137. Epub 2020 May 7.

Lipid Technology and Engineering, School of Food Science and Engineering, Henan University of Technology, Lianhua Road 100, Zhengzhou 450001, Henan Province, P. R. China.

In this work, a novel method for lipophilic caffeoyl alkyl ester production was developed using a natural deep eutectic solvent (DES) consisting of choline chloride and caffeic acid (CA) as the caffeoyl donor. Cation-exchange resins were used as the catalyst to catalyze the esterification of fatty alcohols with the DES. Effects of the caffeoyl donor and reaction variables were investigated. Read More

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http://dx.doi.org/10.1021/acsomega.0c01073DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241008PMC

Anomalous Diffusion Inside Soft Colloidal Suspensions Investigated by Variable Length Scale Fluorescence Correlation Spectroscopy.

ACS Omega 2020 May 8;5(19):11123-11130. Epub 2020 May 8.

Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.

The diffusion of molecules and particles inside the aqueous suspension of soft colloids (polymer microgels) is investigated using variable length scale fluorescence correlation spectroscopy (VLS-FCS). Carbopol 940 is chosen as the model matrix system, and two factors affecting diffusion are investigated: the spatial hindrance and the diffusant-matrix interaction. By studying diffusion of molecules and particles with different sizes inside the suspension, VLS-FCS reveals the restricted motion at a short length scale, that is, in the gaps between the microgels, and normal diffusion at a larger length scale. Read More

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http://dx.doi.org/10.1021/acsomega.0c01052DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241028PMC

3,4-Bis(3-tetrazolylfuroxan-4-yl)furoxan: A Linear C-C Bonded Pentaheterocyclic Energetic Material with High Heat of Formation and Superior Performance.

ACS Omega 2020 May 4;5(19):11115-11122. Epub 2020 May 4.

College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China.

The design and preparation of new nitrogen-rich heterocyclic compounds are of considerable significance for the development of high-performing energetic materials. By combining nitrogen-rich tetrazole and oxygen-rich furoxan, a linear C-C bonded pentaheterocyclic energetic compound, 3,4-bis(3-tetrazolylfuroxan-4-yl) furoxan (BTTFO), was synthesized using a facile and straightforward method. Comprehensive X-ray analysis reveals the key role of hydrogen bonds, π-π interactions, and short contacts in the formation of dense packing of BTTFO and explains why a long chain-shaped molecule has a high density. Read More

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http://dx.doi.org/10.1021/acsomega.0c01048DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241007PMC

Characterization and Properties of F/GAP/CL-20 Energetic Fibers with High Energy and Low Sensitivity Prepared by the Electrospinning Method.

ACS Omega 2020 May 6;5(19):11106-11114. Epub 2020 May 6.

School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.

In this work, three samples of fluoroelastomers/glycidyl azide polymer/hexanitrohexaazaisowurtzitane (F/GAP/CL-20) energetic fibers with F/GAP:CL-20 ratios of 1:9, 2:8, and 3:7 were prepared by the electrospinning method. The morphologies and structures of the samples were characterized by scanning electron microscopy, energy dispersive spectroscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. The results revealed that F/GAP/CL-20 energetic fibers showed a three-dimensional network structure, and four elements C, N, O, and F were observed on the surface. Read More

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http://dx.doi.org/10.1021/acsomega.0c01043DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241023PMC

Mesoporous Polymer-Derived Ceramic Membranes for Water Purification via a Self-Sacrificed Template.

ACS Omega 2020 May 5;5(19):11100-11105. Epub 2020 May 5.

Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, No. 1219 Zhongguan West Road, Zhenhai District, Ningbo, Zhejiang 315201, P. R. China.

Membrane separation has been widely used in water purification, and mesoporous ceramic membranes show a high potential in the future because of their high stability and resistance to harsh environments. In the current study, a novel polymer-derived ceramic silicon oxycarbide (SiOC) membrane was developed via a preceramic reactive self-sacrificed method and was further applied in a homemade dead-end system for water purification. A cyclosiloxane hybrid polymer was selected as the precursor and polydimethylsiloxane (PDMS) was used as the sacrificial template. Read More

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http://dx.doi.org/10.1021/acsomega.0c01021DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241006PMC

Anti-inflammatory, Antiplatelet Aggregation, and Antiangiogenesis Polyketides from : Toward an Understating of Its Biological Activities and Potential Applications.

ACS Omega 2020 May 6;5(19):11092-11099. Epub 2020 May 6.

Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan.

The ethyl acetate extract of an endophyte exhibited anti-inflammatory activity at a concentration of <10 μg/mL. By bioassay-guided fractionation, one new compound, named epicorepoxydon A (), and one unusual bioactive compound, 6-(hydroxymethyl)benzene-1,2,4-triol (), together with six known compounds, were isolated from . The structures of all isolates were established by spectroscopic analyses. Read More

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http://dx.doi.org/10.1021/acsomega.0c01000DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241018PMC

Draft Genome of the Liver Fluke .

ACS Omega 2020 May 6;5(19):11084-11091. Epub 2020 May 6.

Molecular and Structural Biophysics Laboratory, Department of Biochemistry, North-Eastern Hill University, Shillong 793022, India.

Fascioliasis, a neglected foodborne disease caused by liver flukes (genus ), affects more than 200 million people worldwide. Despite technological advances, little is known about the molecular biology and biochemistry of these flukes. We present the draft genome of for the first time. Read More

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http://dx.doi.org/10.1021/acsomega.0c00980DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241025PMC

Molecular Characterization of Soluble Components in the Lignite by Sequential Solvent Extraction via Continuously Reducing Particle Size.

ACS Omega 2020 May 8;5(19):11075-11083. Epub 2020 May 8.

State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.

A lignite was subjected to sequential solvent extraction via continuously reducing particle size from around 20 to more than 200 mesh. Five sets of -hexane and methanol extracts from the particles were characterized by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS) and gas chromatography-mass spectrometry. The total extract yield for lignite when using hexane and methanol as solvents could reach to 0. Read More

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http://dx.doi.org/10.1021/acsomega.0c00952DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241019PMC

Upgrading Wood Gas Using Bentonite Clay: A Multiscale Modeling and Simulation Study.

Authors:
Matthew Lasich

ACS Omega 2020 May 11;5(19):11068-11074. Epub 2020 May 11.

Department of Chemical Engineering, Mangosuthu University of Technology, Durban 4031, South Africa.

Wood gas is the producer gas resulting from gasification of wood biomass and is an important renewable fuel gas in rural areas. This study assessed the capacity of bentonite, a widely used clay mineral, to upgrade wood gas via pressure swing adsorption in order to improve its calorific value (i.e. Read More

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http://dx.doi.org/10.1021/acsomega.0c00937DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241041PMC

Preparation of Highly Porous Graphitic Activated Carbon as Electrode Materials for Supercapacitors by Hydrothermal Pretreatment-Assisted Chemical Activation.

ACS Omega 2020 May 6;5(19):11058-11067. Epub 2020 May 6.

Key Laboratory of Straw Biology and Utilization, The Ministry of Education, Jilin Agricultural University, Changchun 130118, China.

The obstruction of traditional chemical activation lies in the addition of excessive catalysts to prepare the highly porous graphitic activated carbon (HPGAC), we propose the hydrothermal pretreatment-assisted chemical activation method to synthesize HPGAC as electrode materials using a small amount of Na-based catalysts (20 wt %). Hydrolysis accompanied by the strong depolymerization and reorganization of the coal framework is beneficial to the removal of different kinds of oxygen-containing structures (including cross-linking bonds, functional groups, and heterocycles) from lignite; thus, the deoxidization effect of hydrothermal carbonization (HTC) on hydrochar gradually strengthens with the increase in pretreatment temperature from 180 to 300 °C, resulting in the formation of a lot of disordered nanostructures and a smooth and compact surface. In the subsequent chemical activation stage, the microstructure of hydrochar is beneficial to the formation of a lot of graphene-like sheets and developed micropores even under a small amount of Na-based catalysts (20 wt %). Read More

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http://dx.doi.org/10.1021/acsomega.0c00938DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241011PMC

Total Synthesis of Naturally Occurring 5,7,8-Trioxygenated Homoisoflavonoids.

ACS Omega 2020 May 6;5(19):11043-11057. Epub 2020 May 6.

College of Pharmacy, Gachon University, Incheon 21936, Republic of Korea.

Homoisoflavonoids are in the subclass of the larger family of flavonoids but have one more alkyl carbon than flavonoids. Among them, 5,7,8-trioxygenated homoisoflavonoids have not been extensively studied for synthesis and biological evaluation. Our current objective is to synthesize 2 5,7,8-trioxygenated chroman-4-ones and 12 5,7,8-trioxygenated homoisoflavonoids that have been isolated from the plants , , , , , , , , and . Read More

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http://dx.doi.org/10.1021/acsomega.0c00932DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241036PMC

Theoretical and Experimental Study of Compression Effects on Structural Relaxation of Glass-Forming Liquids.

ACS Omega 2020 May 5;5(19):11035-11042. Epub 2020 May 5.

Department of Nanotechnology for Sustainable Energy, School of Science and Technology, Kwansei Gakuin University, Sanda 669-1337, Hyogo, Japan.

We develop the elastically collective nonlinear Langevin equation theory of bulk relaxation of glass-forming liquids to investigate molecular mobility under compression conditions. The applied pressure restricts more molecular motion and therefore significantly slows down the molecular dynamics when increasing the pressure. We quantitatively determine the temperature and pressure dependence of the structural relaxation time. Read More

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http://dx.doi.org/10.1021/acsomega.0c00860DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241026PMC

Improvement of Power Conversion Efficiency of Quantum Dot-Sensitized Solar Cells by Doping of Manganese into a ZnS Passivation Layer and Cosensitization of Zinc-Porphyrin on a Modified Graphene Oxide/Nitrogen-Doped TiO Photoanode.

ACS Omega 2020 May 8;5(19):11024-11034. Epub 2020 May 8.

Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran.

It is vital to acquire power conversion efficiencies comparable to other emerging solar cell technologies by making quantum dot-sensitized solar cells (QDSSCs) competitive. In this study, the effect of graphene oxide (GO), nitrogen, manganese, and a porphyrin compound on the performance of QDSSCs based on a TiO/CdS/ZnS photoanode was investigated. First, adding GO and nitrogen into TiO has a conspicuous impact on the cell efficacy. Read More

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http://dx.doi.org/10.1021/acsomega.0c00855DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241021PMC

UPLC-Q-Exactive Orbitrap MS Analysis for Identification of Lipophilic Components in Citri Sarcodactylis Fructus from Different Origins in China Using Supercritical CO Fluid Extraction Method.

ACS Omega 2020 May 8;5(19):11013-11023. Epub 2020 May 8.

Key Laboratory of Molecular Target & Clinical Pharmacology and the State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences & the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 511436, Guangdong, P. R. China.

To thoroughly evaluate the quality of Citri Sarcodactylis Fructus (CSF) and acquire knowledge of the lipophilic components of CSF from different origins, a simple and efficient approach based on supercritical fluid extraction (SFE) combined with ultraperformance liquid chromatography plus Q-Exactive Orbitrap tandem mass spectrometry (UPLC-Q-Exactive Orbitrap/MS) detection for the discrimination of components from CSF was set up for the first time in this work. Eight batches of CSF samples from five main producing areas were extracted by SFE under optimized conditions, and then SFE extracts were dissected via UPLC-Q-Exactive Orbitrap/MS. The results indicated that 39 lipophilic compounds were successfully separated and unambiguously or tentatively identified, where 4 coumarins, 6 polymethoxyflavones, 3 phthalides, 6 terpenes, and 4 phenolics were not reported formerly. Read More

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http://dx.doi.org/10.1021/acsomega.0c00854DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241013PMC

Tungsten Oxide Nanodots Exhibit Mild Interactions with WW and SH3 Modular Protein Domains.

ACS Omega 2020 May 8;5(19):11005-11012. Epub 2020 May 8.

Institute of Quantitative Biology, Zhejiang University, Hangzhou 310027, China.

Tungsten oxide nanodot (WO ) is an active photothermal nanomaterial that has recently been discovered as a promising candidate for tumor theranostics and treatments. However, its potential cytotoxicity remains elusive and needs to be evaluated to assess its biosafety risks. Herein, we investigate the interactions between WO and two ubiquitous protein domains involved in protein-protein interactions, namely, WW and SH3 domains, using atomistic molecular dynamics simulations. Read More

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http://dx.doi.org/10.1021/acsomega.0c00822DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241039PMC

Preparation of a Polypyrrole/Graphene Oxide Composite Electrode by Electrochemical Codeposition for Capacitor Deionization.

ACS Omega 2020 May 4;5(19):10995-11004. Epub 2020 May 4.

CNPC Tubular Goods Research Institute, Xi'an 710065, Shaanxi, China.

In this paper, a polypyrrole/graphene oxide (PPy/GO) composite electrode, applied to the capacitive deionization process for removing heavy metal ions, was prepared by one-step electrochemical codeposition. The PPy/GO composite electrode has a dense sheet structure, and PPy is spherical and uniformly distributed on the surface of GO sheets. The experimental results show that the PPy/GO composite electrode has a higher capacitance (186. Read More

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http://dx.doi.org/10.1021/acsomega.0c00817DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241012PMC

Biostudy on Traditional Chinese Medicine Massa Medicata Fermentata.

ACS Omega 2020 May 6;5(19):10987-10994. Epub 2020 May 6.

School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 102488, People's Republic of China.

Massa Medicata Fermentata (MMF) has been used for a long time by the Chinese. MMF is used widely in feed additives and human medicinal applications throughout the world; however, there have only been a few reports about the biostudy of its fermentation mechanism and medicinal ingredients. To safely use MMF, we observed the changes in the ingredients and amylase activity for several raw materials during the fermentation process of MMF. Read More

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http://dx.doi.org/10.1021/acsomega.0c00816DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241032PMC

Open-Circuit Voltage () Enhancement in TiO-Based DSSCs: Incorporation of ZnO Nanoflowers and Au Nanoparticles.

ACS Omega 2020 May 8;5(19):10977-10986. Epub 2020 May 8.

Universidad Autónoma de Nuevo León, UANL, Centro de Investigación en Biotecnología y Nanotecnología (CIBYN), Laboratorio de Nanociencias y Nanotecnología, Autopista al Aeropuerto Internacional Mariano Escobedo Km. 10, Parque de Investigación e Innovación Tecnológica (PIIT), 66629 Apodaca, Nuevo León, Mexico.

An important reason for the relatively low efficiency of dye-sensitized solar cells (DSSCs) is the low open-circuit voltage () of about 0.7 V for a standard solar cell with a dye that has an absorption onset at 1.6 eV. Read More

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http://dx.doi.org/10.1021/acsomega.0c00794DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241022PMC

Flammability and Propagation Dynamics of Planar Freely Propagating Dimethyl Ether Premixed Flame.

ACS Omega 2020 May 8;5(19):10965-10976. Epub 2020 May 8.

Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education of China, Chongqing 400044, China.

Flammability dynamics and physics play a crucial role in fire safety and combustion efficiency. This paper numerically studied the flammability dynamics of dimethyl ether/air freely propagating premixed flame over a broad range of equivalence ratios (ϕ). The results showed that the traditional flammability range should be redefined considering the impact of low-temperature chemistry. Read More

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http://dx.doi.org/10.1021/acsomega.0c00792DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241034PMC

Anomalous Optical Properties of Citrazinic Acid under Extreme pH Conditions.

ACS Omega 2020 May 5;5(19):10958-10964. Epub 2020 May 5.

Department of Chemistry and Pharmacy, Laboratory of Materials Science and Nanotechnology, CR-INSTM, University of Sassari, via Vienna 2, 07100 Sassari, Italy.

Citrazinic acid (CZA) is a weakly fluorescent molecular compound whose optical properties are dependent on aggregation states and chemical environment. This molecule and its derivatives have been recently identified as the source of the intense blue emission of carbon dots obtained from citric acid with a nitrogen source, such as ammonia or urea. Citrazinic acid has a strong tendency to aggregate and form tautomers whose optical properties are largely unexplored. Read More

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http://dx.doi.org/10.1021/acsomega.0c00775DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241015PMC

Hydroxyethyl Chitosan-Reinforced Polyvinyl Alcohol/Biphasic Calcium Phosphate Hydrogels for Bone Regeneration.

ACS Omega 2020 May 6;5(19):10948-10957. Epub 2020 May 6.

Department of Mechanical Engineering, Member of Flanders Make, KU Leuven (Catholic University of Leuven), Leuven 3001, Belgium.

Fabrication of reinforced scaffolds for bone regeneration remains a significant challenge. The weak mechanical properties of the chitosan (CS)-based composite scaffold hindered its further application in clinic. Here, to obtain hydroxyethyl CS (HECS), some hydrogen bonds of CS were replaced by hydroxyethyl groups. Read More

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http://dx.doi.org/10.1021/acsomega.0c00727DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241017PMC

Pilot-Scale Treatment of a Spent Uranium Catalyst Formally Used in the SOHIO Process: Pilot Plant Verification of the SENSEI Process.

ACS Omega 2020 May 8;5(19):10939-10947. Epub 2020 May 8.

Decommissioning Technology Research Division, Korea Atomic Energy Research Institute, Daedeok-daero 989-111, Yuseong, Daejeon 305-353, Republic of Korea.

Approximately 7000 drums of waste uranium catalyst are currently present in Korea and require an appropriate treatment and waste management strategy. Recently, one such process has been developed and has proven successful at both laboratory and bench scales. The success of the process has culminated in its verification at a pilot plant scale. Read More

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http://dx.doi.org/10.1021/acsomega.0c00723DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241027PMC

Preparation of a AgCl/PbMoO Composite and Investigation of Its Photocatalytic Oxidative Desulfurization Performance.

ACS Omega 2020 May 7;5(19):10927-10938. Epub 2020 May 7.

College of Science, University of Shanghai for Science and Technology, Shanghai 200093, P. R. China.

PbMoO materials were synthesized by the glycerol and hydrothermal methods, and AgCl nanoparticles were loaded onto the surface of PbMoO by using the precipitation-deposition method. Finally, a AgCl/PbMoO photocatalyst was successfully prepared. X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, and UV-vis diffuse reflectance spectroscopy (UV-vis-DRS) were used to characterize the phase composition, morphology, and light absorption characteristics of the catalyst. Read More

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http://dx.doi.org/10.1021/acsomega.0c00695DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241046PMC

High-Throughput and Sensitive Analysis of Free and Total 8-Isoprostane in Urine with Isotope-Dilution Liquid Chromatography-Tandem Mass Spectrometry.

ACS Omega 2020 May 11;5(19):10919-10926. Epub 2020 May 11.

Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy, Atlanta, Georgia 30341, United States.

Oxidative stress (OS) plays a major role in the pathogenesis of various diseases in humans. OS is a result of an imbalance between reactive oxygen species (ROS) and the biologically available antioxidants that prevent or repair damage that ROS inflict on the host cells. ROS are naturally generated during normal mitochondrial respiration and by oxidative burst during the immune response. Read More

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http://dx.doi.org/10.1021/acsomega.0c00661DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241033PMC

Enhancement of Long-Persistent Phosphorescence by Solid-State Reaction and Mixing of Spectrally Different Phosphors.

ACS Omega 2020 May 5;5(19):10909-10918. Epub 2020 May 5.

Korea Institute of Science and Technology, Seoul 02792, South Korea.

Rare-earth-doped oxide-based phosphors have attracted great interest as light-emitting materials for technical applications and fundamental research because of their high brightness, tunable emission wavelength, and low toxicity, as well as chemical and thermal stability. The recent development of rare-earth-doped nanostructured materials showed improved phosphorescence characteristics, including afterglow and lifetime. However, the development of highly efficient phosphors remains challenging in terms of brightness and long persistence. Read More

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http://dx.doi.org/10.1021/acsomega.0c00620DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241031PMC

Narrowband Polaritonic Thermal Emitters Driven by Waste Heat.

ACS Omega 2020 May 5;5(19):10900-10908. Epub 2020 May 5.

Department of Mechanical Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States.

There are a broad range of applications for narrowband long-wave infrared (LWIR) sources, especially within the 8-12 μm atmospheric window. These include infrared beacons, free-space communications, spectroscopy, and potentially on-chip photonics. Unfortunately, commercial light-emitting diode (LED) sources are not available within the LWIR, leaving only gas-phase and quantum cascade lasers, which exhibit low wall-plug efficiencies and in many cases require large footprints, precluding their use for many applications. Read More

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http://dx.doi.org/10.1021/acsomega.0c00600DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241014PMC

Wettability Control of Interfaces for High-Performance Organic Thin-Film Transistors by Soluble Insulating Polymer Films.

ACS Omega 2020 May 6;5(19):10891-10899. Epub 2020 May 6.

Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, Wuhan 430062, China.

Organic small-molecule semiconductors have higher carrier mobility compared to polymer semiconductors, while the actual performances of these materials are susceptible to morphological defects and misalignment of crystalline grains. Here, a new strategy is explored to control the crystallization and morphologies of a solution-processed organic small-molecule semiconductor 2,7-dioctyl[1]benzothieno[3,2-][1]benzothiophene (C8-BTBT) using soluble polymer films to control the wettability of substrates. Different from the traditional surface modification method, the polymer layer as a modification layer is soluble in the semiconductor solution during the fabrication of organic thin-film transistors (OTFTs). Read More

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http://dx.doi.org/10.1021/acsomega.0c00548DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241009PMC

Ginsenoside Rg1 Regulates Liver Lipid Factor Metabolism in NAFLD Model Rats.

ACS Omega 2020 May 5;5(19):10878-10890. Epub 2020 May 5.

Department of Human Anatomy, College of Basic Medical Sciences, Guilin Medical University, Guilin, Guangxi Zhuang Autonomous Region 541004, P. R. China.

To establish the molecular mechanism of ginsenoside Rg1 in nonalcoholic fatty liver disease (NAFLD), Sprague Dawley (SD) rats (180-220 g) were randomly divided into a control group, model group, ginsenoside Rg1 low-dose group (30 mg/(kg day)), high-dose (60 mg/(kg day)) group, and simvastatin group (1 mg/(kg day)), with 10 SD rats in each group. The control group was given a normal diet. The model group rats were given high-sugar and high-fat diets for 14 weeks. Read More

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http://dx.doi.org/10.1021/acsomega.0c00529DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7241038PMC

Advanced Mechanochemistry Device for Sustainable Synthetic Processes.

ACS Omega 2020 May 8;5(19):10868-10877. Epub 2020 May 8.

University of Coimbra, CQC, Department of Chemistry, Rua Larga, 3004-535 Coimbra, Portugal.

Mechanochemistry is an alternative for sustainable solvent-free processes that has taken the big step to become, in the near future, a useful synthetic method for academia and the fine chemical industry. The apparatus available, based on ball milling systems possessing several optimizable variables, requires too many control and optimization experiments to ensure reproducibility, which has limited its widespread utilization so far. Herein, we describe the development of an automatic mechanochemical single-screw device consisting of an electrical motor, a drill, and a drill chamber. Read More

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http://dx.doi.org/10.1021/acsomega.0c00521DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240818PMC

HyperQuant-A Computational Pipeline for Higher Order Multiplexed Quantitative Proteomics.

ACS Omega 2020 May 7;5(19):10857-10867. Epub 2020 May 7.

Translational Health Science and Technology Institute, NCR Biotech Science Cluster, 3rd Milestone, Faridabad-Gurgaon Expressway, Faridabad 121001, Haryana, India.

Quantitative proteomics has evolved considerably over the last decade with the advent of higher order multiplexing (HOM) techniques. With the development of methods such as-multitagging, cPILOT, hyperplexing, BONPlex, and MITNCAT, the HOM technique is rapidly taking the center stage in multiplexed quantitative proteomics. These studies combined MS and MS labels in a single experiment enabling higher sample throughput. Read More

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http://dx.doi.org/10.1021/acsomega.0c00515DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240821PMC

Membrane-Filtered Kraft Lignin-Silica Hybrids as Bio-Based Sorbents for Cobalt(II) Ion Recycling.

ACS Omega 2020 May 5;5(19):10847-10856. Epub 2020 May 5.

Department of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16 C, 106 91 Stockholm, Sweden.

Efficient and sustainable recycling of cobalt(II) is of increasing importance to support technological development in energy storage and electric vehicle industries. A composite material based on membrane-filtered lignin deposited on nanoporous silica microparticles was found to be an effective and sustainable sorbent for cobalt(II) removal. This bio-based sorbent exhibited a high sorption capacity, fast kinetics toward cobalt(II) adsorption, and good reusability. Read More

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http://dx.doi.org/10.1021/acsomega.0c00492DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240831PMC

Interaction of Stabilized Alkylbenzene Sulfonate Surfactants on the Nanoscale with Water-Wet and Oil-Wet Carbonate Surfaces under High-Salinity and High-Temperature Conditions: A QCM-D Study.

ACS Omega 2020 May 11;5(19):10838-10846. Epub 2020 May 11.

EXPEC ARC, Reservoir Engineering Technology Division, Saudi Aramco, Dhahran 31311, Saudi Arabia.

Understanding the interactions of surfactants and wettability alteration of surfaces is important for many fields, including oil and gas recovery. This work utilizes the quartz crystal microbalance with dissipation to study the interaction of stabilized linear and branched alkylbenzene sulfonates (ABSs), among the most cost-efficient industrial surfactants, with water- and oil-wet calcite surfaces under high-salinity and high-temperature conditions. Confocal laser scanning microscopy is also used to study the effect of the type of ABS on their interaction with oil-wet calcite surfaces. Read More

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http://dx.doi.org/10.1021/acsomega.0c00478DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240813PMC

Experimental and Modeling Process Optimization of Lead Adsorption on Magnetite Nanoparticles via Isothermal, Kinetics, and Thermodynamic Studies.

ACS Omega 2020 May 7;5(19):10826-10837. Epub 2020 May 7.

Department of Environmental Science, Maharshi Dayanand University, Rohtak 124001, India.

Lead has been a burgeoning environmental pollutant used in industrial sectors. Therefore, to emphasize the reactivity of lead toward magnetite nanoparticles for their removal, the present study was framed to analyze mechanisms involved in adsorption of lead. Batch adsorption studies have shown remarkable adsorption efficiency with only a 10 mg adsorbent dose used to extract 99% Pb (110 mg L) within 40 min at pH 6. Read More

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http://dx.doi.org/10.1021/acsomega.0c00450DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240829PMC

Short-Distance Intermolecular Correlations of Mono- and Disaccharides in Condensed Solutions: Bulky Character of Trehalose.

ACS Omega 2020 May 5;5(19):10815-10825. Epub 2020 May 5.

Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan.

Organisms with tolerance to extreme environmental conditions (cryptobiosis) such as desiccation and freezing are known to accumulate stress proteins and/or sugars. Trehalose, a disaccharide, has received considerable attention in the context of cryptobiosis. It has already been shown to have the highest glass-transition temperature and different hydration properties from other mono- and disaccharides. Read More

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http://dx.doi.org/10.1021/acsomega.0c00451DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240834PMC

Simple NIR-Emitting ESIPT Fluorescent Probe for Thiophenol with a Remarkable Stokes Shift and Its Application.

ACS Omega 2020 May 4;5(19):10808-10814. Epub 2020 May 4.

Key Laboratory of Functional Organometallic Materials of College of Hunan Province, College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, P. R. China.

Thiophenol as a highly toxic compound can harm the environment and living organisms and thus demands effective detection. In this work, we presented a near-infrared fluorescent probe () for detecting thiophenol according to the ESIPT mechanism using 2,4-dinitrophenyl group as a recognition unit. This probe displayed specificity toward thiophenol over other related analytes. Read More

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http://dx.doi.org/10.1021/acsomega.0c00389DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7240823PMC