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two liquid phase

Ileana-Andreea Ratiu, Hossam Al-Suod, Magdalena Ligor, Tomasz Ligor, Viorica Railean-Plugaru, Bogusław Buszewski
Cyclitols are phytochemicals naturally occurring in plant material which attracted an increasing interest due to multiple medicinal attributes, amongst the most important are the anti-diabetic, antioxidant and anti-cancer properties. Due to their valuable properties, sugars are used in food industry as sweeteners, preservatives, texture modifiers, fermentation substrates, flavoring and coloring agents. In this study we report for the first time the quantitative analysis of sugars and cyclitols isolated from Solidago virgaurea L...
March 15, 2018: Electrophoresis
Papu Kumar Naik, Mood Mohan, Tamal Banerjee, Sandip Paul, Vaibhav V Goud
The present study aims at the extraction of polyaromatic hydrocarbon (PAH) from fuel oil using novel low cost deep eutectic solvent (DES). The DES is prepared by mixing the hydrogen bond acceptor (HBA; methyltriphenylphosphonium bromide [MTPB]) and hydrogen bond donor (HBD; ethylene glycol (EG)) at a molar ratio of 1:4. The Liquid-Liquid Equilibrium (LLE) is then measured at ambient condition. The classical Molecular Dynamic (MD) simulation technique is then employed to investigate and compare the experimental phase behavior of DES-quinoline-heptane ternary system...
March 15, 2018: Journal of Physical Chemistry. B
Hao Huang, Xiaohui Ren, Zhongjun Li, Huide Wang, Zongyu Huang, Hui Qiao, Pinghua Tang, Jinlai Zhao, Weiyuan Liang, Yanqi Ge, Jie Liu, Jianqing Li, Xiang Qi, Han Zhang
Two dimensional (2D) Bi nano-sheets had been employed to fabricate electrodes for broadband photo-detection. A series of characterization techniques including SEM and HRTEM verify that Bi nanosheets with intact lamellar structure have been obtained after facile liquid phase exfoliation. In the meanwhile, UV-Vis and Raman spectra are also carried out and confirm the inherent optical and physical properties of Bi nanosheets. Inherited from the topological characteristics of Bi bulk counterpart, the resultant Bi nanosheet-based photo-detector exhibits preferable photo-response activity as well as environmental robustness...
March 15, 2018: Nanotechnology
Xiongzhang Liu, Ran Guo, Senjing Zhang, Qingda Li, Genki Saito, Xuemei Yi, Takahiro Nomura
Silicon nitride (Si3N4) products with different nanostructure morphologies and different phases for Si3N4 ceramic with high thermal conductivity were synthesized by a direct nitriding method. NaCl and NH4Cl were added to raw Si powders, and the reaction was carried out under a nitrogen gas flow of 100 mL/min. The phase composition and morphologies of the products were systemically characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and high-resolution transmission electron microscopy (HR-TEM)...
March 14, 2018: ACS Applied Materials & Interfaces
Fang Zhang, W Mx, Zhengping Wang, Kezhen Han, Xiaojuan Liu, Xinguang Xu
As the cousins of graphene, i.e. same group IVA element, the nonlinear absorption properties of silicene nanosheets were rarely studied. In this paper, we successfully exfoliated the two-dimensional silicene nanosheets from bulk silicon crystal using liquid phase exfoliation method. The nonlinear absorption properties of silicene nanosheets were systemically investigated for the first time, as we have known. Silicene performed exciting saturable absorption and two photon absorption behavior. The lower saturable intensity and larger two photon absorption coefficient at 532 nm excitation indicates that silicene has potential application in ultrafast lasers and optical limiting devices, especially in visible waveband...
March 14, 2018: Nanotechnology
Kamil Paduszyński
Conductor-like screening model for real solvents (COSMO-RS) is nowadays one of the most popular and commonly applied tools for estimation of thermodynamic properties of complex fluids. The goal of this work is to provide a comprehensive review and analysis of the performance of this approach in calculating liquid-liquid equilibrium (LLE) phase diagrams in ternary systems composed of ionic liquid (IL) and two molecular compounds belonging to diverse families of chemicals (alkanes, aromatics, S/N-compounds, alcohols, ketones, ethers, carboxylic acid, esters and water)...
March 13, 2018: Journal of Physical Chemistry. B
Martin Dehnert, Robert Magerle
In the atomic force microscopy (AFM) investigation of soft polymers and liquids, the tip-sample interaction is dominated by long-range van der Waals forces, capillary forces and adhesion. Furthermore, the tip can indent several tens of nanometres into the surface, and it can pull off a polymer filament from the surface. Therefore, measuring the unperturbed shape of a polymeric fluid can be challenging. Here, we study the tip-sample interaction with polystyrene droplets swollen in chloroform vapour, where we can utilize the solvent vapour concentration to adjust the specimen's mechanical properties from a stiff solid to a fluid film...
March 13, 2018: Nanoscale
Jiaxing Zhou, Dongmiao Liu, Xiong Deng, Shoumin Zhen, Zhimin Wang, Yueming Yan
BACKGROUND: Water deficiency affects grain proteome dynamics and storage protein compositions, resulting in alterations in gluten viscoelasticity. In this study, we investigated the effects of field water deficit on wheat breadmaking quality and grain storage proteins. RESULTS: Water deficiency produced a shorten grain-filling period and a decrease in grain number, grain weight and grain yield, a reduced starch granule; increased protein content and glutenin macropolymer contents, resulting in superior dough properties and breadmaking quality...
March 12, 2018: Journal of the Science of Food and Agriculture
Reginald M Gorczynski, Nuray Erin, Tahir Maqbool, Christopher P Gorczynski, Laura Y Gorczynski
BACKGROUND AND PURPOSE: In BALB/c mice with transplantable breast tumors, we showed that CD200R1KO mice were cured of local and metastatic growth of EMT6 cells following surgical resection of localized tumor and immunization with irradiated cells along with CpG as adjuvant. On the other hand, wild-type (WT) animals treated in the same fashion develop pulmonary and liver metastases within 20 days of surgery. To develop an in vitro system which would mimic the in vivo model and allow exploration of factors controlling tumor invasion as a precursor to in vivo metastasis, we have developed and characterized a two-phase culture system...
March 12, 2018: Breast Cancer: the Journal of the Japanese Breast Cancer Society
Fulin Jiang, Xiang Peng, Dake Cai, Dingsheng Wen, Yao Liu, Min Zhi, Jiangying Chen, Pinjin Hu, Xueding Wang, Yujie Gao, Min Huang, Xiang Gao, Guoping Zhong
An accurate and sensitive LC-MS/MS method for determining thalidomide, 5-hydroxy thalidomide and 5'-hydroxy thalidomide in human plasma was developed and validated using umbelliferone as an internal standard. The analytes were extracted from plasma (100 μL) by liquid-liquid extraction with ethyl acetate and then separated on a BETASIL C18 column (4.6 mm×150 mm, 5μm) with mobile phase composed of methanol / water containing 0.1% formic acid (70/30, v/v) in an isocratic mode at a flow rate of 0.5 ml/min. The detection was performed using an API triple quadrupole mass spectrometer in APCI mode...
March 12, 2018: Biomedical Chromatography: BMC
Jyun-Hong Chen, Yuan-Liang Zhong, Lain-Jong Li, Chii-Dong Chen
Two-dimensional electron gas (2DEG) is crucial in condensed matter physics and is present on the surface of liquid helium and at the interface of semiconductors. Monolayer MoS2 of 2D materials also contains 2DEG in an atomic layer as field effect transistor (FET) ultrathin channel. In this study, we synthesized double triangular MoS<sub>2</sub> through a chemical vapor deposition method to obtain grain boundaries for forming a ripple structure in FET channel. When the temperature was higher than approximately 175 K, the temperature dependence of the electron mobility μ was consistent with those in previous experiments and theoretical predictions...
March 12, 2018: Nanotechnology
Daniel Salgado-Blanco, Carlos I Mendoza, Marco A Chávez-Rojo, José A Moreno-Razo, Enrique Díaz-Herrera
Molecular dynamics simulations were performed for a Gay-Berne discotic fluid confined in a slab geometry for two different anchorings: homeotropic (face-on) and planar (edge-on), and for two different confinement lengths. Our results show that the behaviour of the more confined system in the temperature region of the isotropic-nematic transition is critically influenced by the presence of the walls: the growth of the solid-liquid crystal interface spans over the entire width of the cell, and the character of the transition is changed from first order to continuous...
March 12, 2018: Soft Matter
Yong Lei Wang, Ning Wang, Ruibao Jia, Kefeng Zhang, Baozhen Liu, Wuchang Song, Junqi Jia
Countercurrent-cocurrent dissolved air flotation (CCDAF), the popular water purification device, which consists of collision and adhesion contact zones, showed favorable flotation conditions for micro-bubble adhesion and stability. In this study, computational fluid dynamics (CFD) numerical simulation was employed to confirm that the unique CCDAF configuration create reasonable and that the flow field characteristics were good no matter for single phase or gas-liquid two-phase conditions. In addition, the turbulence of the flow field was enhanced with the increasing influent load; the swirling was remarkably reduced with the increase of gas holdup...
March 2018: Water Science and Technology: a Journal of the International Association on Water Pollution Research
Lipsa Dash, Saravanan Subramaniam, Sagar A Khulape, Bikash Ranjan Prusty, Kamal Pargai, Shirish D Narnaware, Niteen V Patil, Bramhadev Pattnaik
Foot-and-mouth disease (FMD) is an acute, highly contagious, and economically devastating viral disease of domestic and wildlife species. For effective implementation of FMD control program, there is an imperative need for developing a rapid, sensitive, and specific diagnostics which help in the identification of serotypes involved in the outbreaks. The humoral immune response of the Camelidae is unique since in these animals 75% of circulating antibodies are constituted by heavy-chain antibodies and 25% are conventional immunoglobulin with two identical heavy chains...
March 12, 2018: Animal Biotechnology
Ananda Kafle, Takeshi Misono, Avinash Bhadani, Masaaki Akamatsu, Kenichi Sakai, Chihiro Kaise, Teruhisa Kaneko, Hideki Sakai
We have studied the phase behavior of distearoylphosphatidylcholine (DSPC) in the presence of sodium β-sitosteryl sulfate (PSO4 ). PSO4 was found to induce sterol-rich and sterol-poor domains in the DSPC membrane. These two domains constitute a fluid, liquid ordered (Lo ) phase and a gel (Lβ ) phase. PSO4 was less miscible in DSPC than in a dipalmitoylphosphatidylcholine (DPPC) membrane, as evidenced by its tendency to separate from the bilayer at a concentration of 50 mol%. This lack of miscibility was attributed to the greater van der Waals forces between the PC hydrocarbon chains...
March 9, 2018: Journal of Oleo Science
Elisa Boanini, Paola Torricelli, Felix Sima, Emanuel Axente, Milena Fini, Ion N Mihailescu, Adriana Bigi
The chemistry, structure and morphology of the implant surface have a great influence on the integration of an implant material with bone tissue. In this work, we applied Combinatorial Matrix-Assisted Pulsed Laser Evaporation (C-MAPLE) to deposit gradient thin films with variable compositions of Sr-substituted hydroxyapatite (SrHA) and Zn-substituted β-tricalcium phosphate (ZnTCP) on Titanium substrates. Five samples with different SrHA/ZnTCP composition ratios were fabricated by a single step laser procedure...
March 6, 2018: Journal of Inorganic Biochemistry
Lurong Yang, Xinyu Wang, Itza Mendoza-Sanchez, Linda M Abriola
Sequestered mass in low permeability zones has been increasingly recognized as an important source of organic chemical contamination that acts to sustain downgradient plume concentrations above regulated levels. However, few modeling studies have investigated the influence of this sequestered mass and associated (coupled) mass transfer processes on plume persistence in complex dense nonaqueous phase liquid (DNAPL) source zones. This paper employs a multiphase flow and transport simulator (a modified version of the modular transport simulator MT3DMS) to explore the two- and three-dimensional evolution of source zone mass distribution and near-source plume persistence for two ensembles of highly heterogeneous DNAPL source zone realizations...
March 8, 2018: Journal of Contaminant Hydrology
Mindi Zhao, Jianqiang Wu, Xundou Li, Youhe Gao
Urine is a better source than plasma for biomarker studies, as it can accumulate all changes in the body. Various candidate urinary biomarkers of physiological condition, kidney disease and even brain dysfunction, have been detected in urine; however, urine has rarely been used to reflect cardiac diseases. In this study, urine at day 0, 14, 21 and 28 were collected from the myosin-induced autoimmune myocarditis rat models. The candidate urinary biomarkers were then characterized using the isobaric tandem mass tag labeling approach coupled with offline two-dimensional reverse-phase liquid chromatography and high-resolution mass spectrometry...
March 7, 2018: Journal of Proteomics
Hannu Kokki, Martin Maaroos, Sten Ellam, Jari Halonen, Ilkka Ojanperä, Merja Ranta, Veli-Pekka Ranta, Aleksandra Tolonen, Oscar Lindberg, Matias Viitala, Juha Hartikainen
PURPOSE: Cardiac surgery and conventional extracorporeal circulation (CECC) impair the bioavailability of drugs administered by mouth. It is not known whether miniaturized ECC (MECC) or off-pump surgery (OPCAB) affect the bioavailability in similar manner. We evaluated the metoprolol bioavailability in patients undergoing CABG surgery with CECC, MECC, or having OPCAB. METHODS: Thirty patients, ten in each group, aged 44-79 years, scheduled for CABG surgery were administered 50 mg metoprolol by mouth on the preoperative day at 8-10 a...
March 9, 2018: European Journal of Clinical Pharmacology
Ziqiang Li, Jia Liu, Deqin Zhang, Xi Du, Lifeng Han, Chunxiao Lv, Yanfen Li, Ruihua Wang, Baohe Wang, Yuhong Huang
BACKGROUND: Diabetes is a chronic disease associated with significant morbidity and mortality. Tangzhiqing tablet (TZQ), a Chinese traditional patent medicine, has been in phase 2 clinical trial for the treatment of diabetes mellitus. However, the current quality evaluation of TZQ still remains rather obscure. PURPOSE: The promising quality markers (Q-markers) of TZQ will be sought for its quality assessment and process control based on the qualitative, quantitative and dose-exposure-response analysis...
February 21, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
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