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1. Ultrasound-responsive droplets for therapy: A review

Author:
Lea-Banks, H.; O'Reilly, M.A.; Hynynen, K.
Source:
Journal of controlled release 2019 v.293 pp. 144-154
ISSN:
0168-3659
Subject:
volatilization,   etc   ; diagnostic techniques; droplets; drugs; emulsions; therapeutics;     Show all 6 Subjects
Abstract:
... The last two decades have seen the development of acoustically activated droplets, also known as phase-change emulsions, from a diagnostic tool to a therapeutic agent. Through bubble effects and triggered drug release, these superheated agents have found potential applications from oncology to neuromodulation. The aim of this review is to summarise the key developments in therapeutic droplet desig ...
DOI:
10.1016/j.jconrel.2018.11.028

2. Characterizing wet and dry fluids in temperature-entropy diagrams

Author:
White, J.A.; Velasco, S.
Source:
Energy 2018 v.154 pp. 269-276
ISSN:
0360-5442
Subject:
volatilization,   etc   ; entropy; temperature; vapors;     Show all 4 Subjects
Abstract:
... In this work we show that the shape of the liquid-vapor saturation curve in a Tr−s∗ diagram (Tr = T/Tc and s∗ = s/R, with Tc the critical temperature, s the molar entropy and R the gas constant) for a given fluid is mainly governed by the acentric factor, ω, and the critical molar volume, vc, of the fluid. The study uses as reference the point M where the saturated vapor curve in the Tr−s∗ diagram ...
DOI:
10.1016/j.energy.2018.04.105

3. Historical and future polychlorinated biphenyl emission trends in Japan

Author:
Koshiba, Junichiro; Hirai, Yashuhiro; Sakai, Shinichi
Source:
Chemosphere 2019 v.232 pp. 387-395
ISSN:
0045-6535
Subject:
volatilization,   etc   ; emissions; environmental fate; models; polychlorinated biphenyls; Japan;     Show all 6 Subjects
Abstract:
... Different countries produce varying amounts of polychlorinated biphenyls (PCBs), have distinct patterns of use, and regulations for treatment and disposal. Therefore, long-term countermeasures require an understanding of historical and future emission trends at the national scale. In this study, we estimate historical PCB emissions from products containing PCBs, unintentional production related th ...
DOI:
10.1016/j.chemosphere.2019.04.206

4. Comparative study of liquefied natural gas (LNG) cold energy power generation systems in series and parallel

Author:
Bao, Junjiang; Yuan, Tong; Zhang, Lei; Zhang, Ning; Zhang, Xiaopeng; He, Gaohong
Source:
Energy conversion and management 2019 v.184 pp. 107-126
ISSN:
0196-8904
Subject:
volatilization,   etc   ; cold; energy; heat transfer; liquefied natural gas; power generation;     Show all 6 Subjects
Abstract:
... The irreversible loss of heat transfer between working fluid and LNG in the condensation process of the single-stage cycle which uses liquefied natural gas (LNG) cold energy to generate power is large, resulting in low power generation capacity. This can be improved effectively by combining separated cycles in series or in parallel. But which combination method (in series or in parallel) is more s ...
DOI:
10.1016/j.enconman.2019.01.040

5. Structural evolution of LiNₙ⁺ (n = 2, 4, 6, 8, and 10) clusters: mass spectrometry and theoretical calculations

Author:
Ge, Zhongxue; Ding, Kewei; Li, Yisu; Xu, Hongguang; Chen, Zhaoqiang; Ma, Yiding; Li, Taoqi; Zhu, Weiliang; Zheng, Weijun
Source:
RSC advances 2019 v.9 no.12 pp. 6762-6769
ISSN:
2046-2069
Subject:
volatilization,   etc   ; cations; electrons; energy; isomers; lithium; mass spectrometry;     Show all 7 Subjects
Abstract:
... Mixed nitrogen-lithium cluster cations LiNₙ⁺ were generated by laser vaporization and analyzed by time-of-flight mass spectrometry. It is found that LiN₈⁺ has the highest ion abundance among the LiNₙ⁺ ions in the mass spectrum. Density functional calculations were conducted to search for the stable structures of the Li–N clusters. The theoretical results show that the most stable isomers of LiNₙ⁺ ...
DOI:
10.1039/c9ra00439d

6. Methylmercury concentrations and potential sources in atmospheric fine particles in Beijing, China

Author:
Zhang, Huan; Wang, Zhangwei; Zhang, Xiaoshan
Source:
The Science of the total environment 2019 v.681 pp. 183-190
ISSN:
0048-9697
Subject:
volatilization,   etc   ; combustion; dust; methylmercury compounds; models; oxidants; particulates; solar radiation; summer; China;     Show all 10 Subjects
Abstract:
... The characteristics and sources of methylmercury (MeHg) in atmospheric fine particles remain poorly elucidated. We obtained the concentrations of MeHg bound to atmospheric fine particles in four seasons, from September 2015 to July 2016, at an urban site in Beijing, China. Concentrations ranged from <0.01 to 1.33 pg m−3, averaging at 0.21 ± 0.17 pg m−3. The highest concentration of MeHg in atmosph ...
DOI:
10.1016/j.scitotenv.2019.05.128

7. Effect of temperature on the morphology of poly (lactic acid) porous membrane prepared via phase inversion induced by water droplets

Author:
Wang, Han; Wang, Linfeng; Liu, Changjun; Xu, Yuan; Zhuang, Yan; Zhou, Yingshan; Gu, Shaojin; Xu, Weilin; Yang, Hongjun
Source:
International journal of biological macromolecules 2019 v.133 pp. 902-910
ISSN:
0141-8130
Subject:
volatilization,   etc   ; ambient temperature; droplets; polylactic acid; porosity; scanning electron microscopy; solvents;     Show all 7 Subjects
Abstract:
... Temperature is a critical parameter that can control the morphology of poly (lactic acid) (PLA) porous membranes prepared through phase inversion induced by water droplets. It determines the volatilization rate of the solvent and the exchange rate between the solvent and nonsolvent. In this work, in order to investigate the effect of temperature on the morphology, PLA porous membranes were prepare ...
DOI:
10.1016/j.ijbiomac.2019.04.145

8. Arsenic volatilization by Aspergillus sp. and Penicillium sp. isolated from rice rhizosphere as a promising eco-safe tool for arsenic mitigation

Author:
Soares Guimarães, Leandro Henrique; Segura, Fabiana Roberta; Tonani, Ludmilla; von-Zeska-Kress, Marcia Regina; Rodrigues, Jairo Lisboa; Calixto, Leandro Augusto; Silva, Fábio Ferreira; Batista, Bruno Lemos
Source:
Journal of environmental management 2019 v.237 pp. 170-179
ISSN:
0301-4797
Subject:
volatilization,   etc   ; Aspergillus niger; Penicillium; anthropogenic activities; arsenic; carcinogenicity; fungal growth; fungi; humans; paddy soils; rhizosphere; rice;     Show all 12 Subjects
Abstract:
... Arsenic (As) is a non-threshold human carcinogenic. This element can be volatilized either by nature or anthropogenic sources. In the present study, the analytical performance of an As volatile species trapping system was evaluated to assess the As volatilization promoted by Penicillium sp. and Aspergillus sp., both isolated from rice rhizosphere, and Aspergillus niger sp. considered as a referenc ...
DOI:
10.1016/j.jenvman.2019.02.060

9. The effect of acrylate functionality on frontal polymerization velocity and temperature

Author:
Bynum, Samuel; Tullier, Michael; Morejon‐Garcia, Catherine; Guidry, Jesse; Runnoe, Emma; Pojman, John A.
Source:
Journal of polymer science 2019 v.57 no.9 pp. 982-988
ISSN:
0887-624X
Subject:
volatilization,   etc   ; acrylates; crosslinking; dimethyl sulfoxide; energy; heat production; molecular weight; octanol; polymerization; polymers; temperature;     Show all 11 Subjects
Abstract:
... Frontal polymerization is a method of converting monomer(s) to polymer via a localized reaction zone that propagates from the coupling of thermal diffusion with the Arrhenius kinetics of an exothermic reaction. Several factors affect front velocity and temperature with the role of monomer functionality being of particular interest in this study. Polymerizing a di and triacrylate of equal molecular ...
DOI:
10.1002/pola.29352

10. Gas-Phase Detection of Fluorotelomer Alcohols and Other Oxygenated Per- and Polyfluoroalkyl Substances by Chemical Ionization Mass Spectrometry

Author:
Riedel, Theran P.; Lang, Johnsie R.; Strynar, Mark J.; Lindstrom, Andrew B.; Offenberg, John H.
Source:
Environmental science & technology letters 2019 v.6 no.5 pp. 289-293
ISSN:
2328-8930
Subject:
volatilization,   etc   ; additives; alcohols; carboxylic acids; detection limit; gases; mass spectrometry; organofluorine compounds;     Show all 8 Subjects
Abstract:
... Per- and polyfluoroalkyl substances (PFAS) are incorporated into an ever-increasing number of modern products and inevitably enter the environment and ultimately human bodies. Herein, we show that chemical ionization mass spectrometry with iodide reagent ion chemistry is a useful technique for the detection of fluorotelomer alcohols (FTOHs) and other oxygenated PFAS, including per- and polyfluoro ...
DOI:
10.1021/acs.estlett.9b00196

11. Essential oils in nanostructured systems: Challenges in preparation and analytical methods

Author:
de Matos, Sheila Porto; Lucca, Leticia G.; Koester, Letícia S.
Source:
Talanta 2019 v.195 pp. 204-214
ISSN:
0039-9140
Subject:
volatilization,   etc   ; analytical methods; encapsulation; essential oils; evaporation; medicinal properties; nanotechnology; solvents; surveys; therapeutics;     Show all 10 Subjects
Abstract:
... Essential oils are natural products extracted from plants that present volatile and thermolabile characteristics. Essential oils have become products of interest in many fields, including the pharmaceutical, due to their medicinal properties. In recent years, the interest in the encapsulation of essential oils in nanometric systems for therapeutic approaches has risen and a number of studies have ...
DOI:
10.1016/j.talanta.2018.11.029

12. The accurate diffusive model for predicting the vapor pressure of phase change materials by thermogravimetric analysis

Author:
Szczotok, Anna M.; Kjøniksen, Anna-Lena; Rodriguez, Juan F.; Carmona, Manuel
Source:
Thermochimica acta 2019
ISSN:
0040-6031
Subject:
volatilization,   etc   ; boiling point; diffusivity; equations; gases; heat; hexadecane; mass transfer; models; prediction; temperature; thermogravimetry; vapor pressure;     Show all 13 Subjects
Abstract:
... Three different approaches to estimate the vapor pressure by thermogravimetric analyses (TGA) of commercial paraffins-based phase change materials (PCMs) have been compared. The known Langmuir vaporization relation and two additional models based on the mass transfer by molecular diffusion at isothermal and non-isothermal conditions, using the Fuller equation for estimating binary diffusion coeffi ...
DOI:
10.1016/j.tca.2019.04.001

13. Understanding the mechanism of cornstalk liquefaction in water/ethanol mixtures through Py-GC/MS analysis of the solid residues

Author:
Shi, Zheng-Jun; Zhang, Run-Yang; Sun, Jiao; Xie, Xin-An; Liu, Hua-Min
Source:
Industrial crops and products 2019 v.130 pp. 292-300
ISSN:
0926-6690
Subject:
volatilization,   etc   ; biomass; corn stover; ethanol; gas chromatography-mass spectrometry; liquefaction; pyrolysis; temperature; thermogravimetry;     Show all 9 Subjects
Abstract:
... Few investigations have been made to apply thermal analysis methods on solid residue analysis to understand biomass liquefaction mechanistic information. To investigate the mechanism of cornstalk liquefaction in water/ethanol mixtures, the solid residues remaining after the liquefaction process were characterized by thermogravimetric analysis (TGA) and analytical pyrolysis (Py-GC/MS). Pyrolysis te ...
DOI:
10.1016/j.indcrop.2019.01.002

14. Ratiometric Electrochemical Sensors Associated with Self-Cleaning Electrodes for Simultaneous Detection of Adrenaline, Serotonin, and Tryptophan

Author:
Zhang, Junjie; Wang, Dongyang; Li, Yingchun
Source:
ACS applied materials & interfaces 2019 v.11 no.14 pp. 13557-13563
ISSN:
1944-8252
Subject:
volatilization,   etc   ; adsorption; electrochemistry; electrodes; electrolytes; epinephrine; hydrophobicity; methylene blue; monitoring; nanocomposites; polydimethylsiloxane; sensors (equipment); serotonin; tryptophan;     Show all 14 Subjects
Abstract:
... Electrochemical sensors have long suffered from issues such as nonspecific adsorption, poor anti-interference ability, and internal and external disturbances. To address these challenges, we developed a facile electrochemical method, which integrated a ratiometric strategy with self-cleaning electrodes. In the novel sensing system, the self-cleaning electrode was realized via forming a hydrophobic ...
DOI:
10.1021/acsami.8b22572

15. Laser Synthesis and Spectroscopy of Molybdenum Oxide Nanorods

Author:
Woodard, Melissa P.; Duncan, Michael A.
Source:
Journal of physical chemistry 2019 v.123 no.14 pp. 9560-9566
ISSN:
1932-7455
Subject:
volatilization,   etc   ; Raman spectroscopy; acetonitrile; annealing; catalysts; coatings; ligands; methylene blue; molybdenum; nanorods; optical properties; oxidation; solvents;     Show all 13 Subjects
Abstract:
... Molybdenum oxide nanorods have been synthesized using laser vaporization, oxidation reactions, and ligand coating in a gas flow reactor, followed by capture in a cryogenic trap and transfer to solution. This method produces small ligand-coated (acetonitrile) nanorods, 100 × 20 nm in size, with excellent size uniformity that are soluble in several common solvents. The electronic and optical propert ...
DOI:
10.1021/acs.jpcc.9b00627

16. Improved Jayaweera-Mikkelsen model to quantify ammonia volatilization from rice paddy fields in China

Author:
Zhan, Xiaoying; Chen, Chuan; Wang, Qihui; Zhou, Feng; Hayashi, Kentaro; Ju, Xiaotang; Lam, Shu Kee; Wang, Yonghua; Wu, Yali; Fu, Jin; Zhang, Luping; Gao, Shuoshuo; Hou, Xikang; Bo, Yan; Zhang, Dan; Liu, Kaiwen; Wu, Qixia; Su, Rongrui; Zhu, Jianqiang; Yang, Changliang; Dai, Chaomeng; Liu, Hongbin
Source:
Environmental science and pollution research international 2019 v.26 no.8 pp. 8136-8147
ISSN:
0944-1344
Subject:
volatilization,   etc   ; ammonia; inventories; models; paddies; pesticide application; rice; wind speed; China;     Show all 9 Subjects
Abstract:
... Current estimates of China’s ammonia (NH₃) volatilization from paddy rice differ by more than twofold, mainly due to inappropriate application of chamber-based measurements and improper assumptions within process-based models. Here, we improved the Jayaweera-Mikkelsen (JM) model through multiplying the concentration of aqueous NH₃ in ponded water by an activity coefficient that was determined base ...
DOI:
10.1007/s11356-019-04275-2

17. CFD Study of Wet Agglomerate Growth and Breakage in a Fluidized Bed Containing Hot Silica Sand Particles with Evaporative Liquid Injection

Author:
Ahmadi Motlagh, A. H.; Pougatch, Konstantin; Maturi, Anish; Salcudean, Martha; Grace, John R.; Grecov, Dana; McMillan, Jennifer
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.11 pp. 4396-4411
ISSN:
1520-5045
Subject:
volatilization,   etc   ; droplets; energy; fluidized beds; heat; liquids; mass transfer; models; momentum; process design; quartz; temperature;     Show all 12 Subjects
Abstract:
... A computational model is developed to simulate evaporative spray injection into a hot gas–solid fluidized bed. Eulerian treatment of three phases (gas, droplets, and particles) is used, with a population balance model to account for variation in agglomerate sizes. Submodels account for the interaction between droplets and hot particles, including momentum exchange, heat and mass transfer, and vapo ...
DOI:
10.1021/acs.iecr.8b05174

18. Accelerating Effect of Poly(vinylpyrrolidone) Matrix on Thermal Decomposition of Malonic Acid

Author:
Jelić, Dijana; Liavitskaya, Tatsiana; Paulechka, Eugene; Vyazovkin, Sergey
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.8 pp. 2891-2898
ISSN:
1520-5045
Subject:
volatilization,   etc   ; acetic acid; kinetics; malonic acid; process design; thermal degradation; thermogravimetry;     Show all 7 Subjects
Abstract:
... Thermogravimetry in combination with isoconversional kinetic analysis is utilized to probe the effect of poly(vinylpyrrolidone) (PVP) on the decomposition of malonic acid (MA) in PVP matrices. The systems under study contain 4, 2, and 1 mol of PVP per 1 mol of MA. Although all systems demonstrate acceleration relative to neat MA, the strongest effect per mole of added PVP is observed in the 1:1 sy ...
DOI:
10.1021/acs.iecr.8b06457

19. A Detailed Investigation of Adsorption Isotherms, Enthalpies, and Kinetics of Mercury Adsorption on Nonimpregnated Activated Carbon

Author:
Ambrosy, Jonas M.; Pasel, Christoph; Luckas, Michael; Bittig, Margot; Bathen, Dieter
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.10 pp. 4208-4221
ISSN:
1520-5045
Subject:
volatilization,   etc   ; activated carbon; adsorbents; adsorption; desorption; diffusivity; enthalpy; hydrocarbons; mercury; nitrogen; process design; sorption isotherms; temperature;     Show all 13 Subjects
Abstract:
... In comparison to the adsorption of hydrocarbons, the adsorption of mercury on activated carbons reveals many unexpected results. Both physisorptive and chemisorptive mechanisms play a role even in the adsorption on nonimpregnated activated carbons. In this work, the adsorption of Hg⁰ from a N₂ carrier gas stream is studied on three commercial adsorbents. Single and cumulative breakthrough curves a ...
DOI:
10.1021/acs.iecr.8b05932

20. A novel approach to thermal storage of direct steam generation solar power systems through two-step heat discharge

Author:
Li, Jing; Gao, Guangtao; Kutlu, Cagri; Liu, Keliang; Pei, Gang; Su, Yuehong; Ji, Jie; Riffat, Saffa
Source:
Applied energy 2019 v.236 pp. 81-100
ISSN:
0306-2619
Subject:
volatilization,   etc   ; cost effectiveness; heat; heat exchangers; power plants; solar thermal energy; steam; water temperature;     Show all 8 Subjects
Abstract:
... Steam accumulators are the only commercial solution for heat storage of direct steam generation (DSG) solar thermal power plants. Current accumulators have low storage capacity as the turbine suffers from inefficient off-design operation during heat discharge, thereby restricting the development of DSG technology. This work presents a novel approach to solving this problem by using two-stage accum ...
DOI:
10.1016/j.apenergy.2018.11.084