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You searched for: Publication Year 2014 Remove constraint Publication Year: 2014 Subject term equations Remove constraint Subject term: equations
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1. 125I-Radiolabeling, Surface Plasmon Resonance, and Quartz Crystal Microbalance with Dissipation: Three Tools to Compare Protein Adsorption on Surfaces of Different Wettability

Author:
Luan Yafei; Li Dan; Wang Yanwei; Liu Xiaoli; Brash John L.; Chen Hong
Source:
Langmuir 2014 v.30 no.4 pp. 1029-1035
ISSN:
1520-5827
Subject:
adsorption; biocompatibility; biocompatible materials; equations; fibrinogen; gold; hydrophilicity; hydrophobicity; models; quartz crystal microbalance; radiolabeling; surface plasmon resonance; wettability
Abstract:
... The extent of protein adsorption is an important consideration in the biocompatibility of biomaterials. Various experimental methods can be used to determine the quantity of protein adsorbed, but the results usually differ. In the present work, self-assembled monolayers (SAMs) were used to prepare a series of model gold surfaces varying systematically in water wettability, from hydrophilic to hydr ...
DOI:
10.1021/la403498w

2. 2-D Modeling of thermo-kinetics coupled with heat and mass transfer in the reduction zone of a fixed bed downdraft biomass gasifier

Author:
Mohamed Ali Masmoudi; Melik Sahraoui; Najla Grioui; Kamel Halouani
Source:
Renewable energy 2014 v.66 pp. 288-298
ISSN:
0960-1481
Subject:
biochar; biomass; energy; equations; gasification; heat; mass transfer; models; momentum; reaction kinetics; renewable energy sources; synthesis gas; temperature
Abstract:
... A two dimensional modeling is developed in the reduction zone of a fixed bed downdraft biomass gasifier based on mass, energy and momentum conservation equations written for the solid and fluid phases and coupled with chemical kinetics. Kinetics parameters are derived from previous works and an effectiveness factor was used in the reaction rate correlation to quantify the mass transfer resistance ...
DOI:
10.1016/j.renene.2013.12.016

3. A 24-Hour Time-Energy Budget for Wintering American Black Ducks (Anas rubripes) and its Comparison to Allometric Estimations

Author:
Jones Orrin E.; Williams Christopher K.; Castelli Paul M.
Source:
Waterbirds 2014 v.37 no.3 pp. 264-273
ISSN:
1524-4695
Subject:
African Americans; Anas; allometry; carrying capacity; ducks; equations; managers; metabolism; resting metabolic rate
Abstract:
... Previous efforts to estimate the daily energy expenditure of American Black Ducks (Anas rubripes) have relied upon diurnal behavior observations or predictive allometric equations. American Black Duck behavior was quantified during morning crepuscular, diurnal, evening crepuscular and nocturnal periods to create a 24-hr time-energy budget. Behaviors and energy expenditure differed between periods ...
DOI:
10.1675/063.037.0305

4. 24-gauge ultrafine cryoprobe with diameter of 550μm and its cooling performance

Author:
Junnosuke Okajima; Atsuki Komiya; Shigenao Maruyama
Source:
Cryobiology 2014 v.69 no.3 pp. 411-418
ISSN:
0011-2240
Subject:
cooling; cryosurgery; equations; freezing; heat transfer; heat transfer coefficient; hydrocolloids; stainless steel; surface temperature
Abstract:
... This paper describes the development of a novel cryoprobe with the same size as a 24-gauge injection needle and the evaluation of its cooling performance. This ultrafine cryoprobe was designed to reduce the invasiveness and extend application areas of cryosurgery. The ultrafine cryoprobe has a double-tube structure and consists of two stainless steel microtubes. The outer diameter of the cryoprobe ...
DOI:
10.1016/j.cryobiol.2014.09.104

5. 2D numerical modeling of grain-sorting processes and grain size distributions

Author:
Yi Xiao; Hong Wang; Xuejun Shao
Source:
Journal of hydro-environment research 2014 v.8 no.4 pp. 452-458
ISSN:
1570-6443
Subject:
equations; evolution; particle size distribution; sediment transport; sediments; simulation models
Abstract:
... A depth-averaged finite difference two-dimensional hydrodynamic-morphological and sediment transport model is presented in the orthogonal curvilinear grid system. The sediment submodel considers the influence of selective sorting by modifying the sediment transport capacity and incorporates a simple simulation method to describe changes in the grain size distribution of the bed surface by solving ...
DOI:
10.1016/j.jher.2013.08.002

6. A 2D weakly-coupled and efficient numerical model for transient shallow flow and movable bed

Author:
C. Juez; J. Murillo; P. García-Navarro
Source:
Advances in water resources 2014 v.71 pp. 93-109
ISSN:
0309-1708
Subject:
bedload; case studies; equations; mathematical models; prediction; sediments; space and time; water resources
Abstract:
... Recent advances in the simulation of free surface flows over mobile bed have shown that accurate and stable results in realistic problems can be provided if an appropriate coupling between the shallow water equations (SWE) and the Exner equation is performed. This coupling can be done if using a suitable Jacobian matrix. As a result, faithful numerical predictions are available for a wide range of ...
DOI:
10.1016/j.advwatres.2014.05.014

7. 3-D finite-volume model of dam-break flow over uneven beds based on VOF method

Author:
Reza Marsooli; Weiming Wu
Source:
Advances in water resources 2014 v.70 pp. 104-117
ISSN:
0309-1708
Subject:
advection; algorithms; equations; laboratory experimentation; mathematical models; momentum; surface water; turbulent flow; viscosity; water resources
Abstract:
... A 3-D numerical model has been developed to simulate dam-break flow over uneven beds in irregular domains. The model solves the Reynolds-Averaged Navier–Stokes equations (RANS) using a finite-volume method based on collocated mesh that fits the solid boundaries such as bed and walls. The velocity and pressure coupling is achieved using the PISO algorithm and the Rhie and Chow’s momentum interpolat ...
DOI:
10.1016/j.advwatres.2014.04.020

8. 3D reconstruction of Chinese hickory tree for dynamics analysis

Author:
Chuanyu Wu; Leiying He; Xiaoqiang Du; Shaozhong Chen; Ke'nan Ni
Source:
Biosystems engineering 2014 v.119 pp. 69-79
ISSN:
1537-5110
Subject:
Carya cathayensis; branches; computer software; equations; finite element analysis; harvesting; leaves; models; nuts; topology; trees; vibration
Abstract:
... Vibratory harvest is the most appropriate and efficient way to harvest Chinese hickory (Carya cathayensis Sarg.) nuts because of the hilly growth environment and scattered shooting architecture. To develop a mechanical harvester that can be adapted to different Chinese hickory trees, a three-dimensional (3D) model of the tree should be obtained and its dynamics parameters identified. This paper in ...
DOI:
10.1016/j.biosystemseng.2014.01.008

9. 4-Dimensional Modeling Strategy for an Improved Understanding of Miniemulsion NMP of Acrylates Initiated by SG1-Macroinitiator

Author:
Van Steenberge Paul H. M.; D’hooge Dagmar R.; Reyniers Marie-Françoise; Marin Guy B.; Cunningham Michael F.
Source:
Macromolecules 2014 v.47 no.22 pp. 7732-7741
ISSN:
1520-5835
Subject:
acrylates; equations; kinetics; models; nanoemulsions; polymerization
Abstract:
... For the first time, a kinetic model considering four-dimensional Smith–Ewart equations is presented to simultaneously calculate the time evolution of the conversion, number-average chain length, dispersity, end-group functionality (EGF), and short chain branching (SCB) content for the miniemulsion NMP of n-butyl acrylate (nBuA), initiated by poly(nBuA)-(N-tert-butyl-N-(1-diethylphosphono-2,2-dimet ...
DOI:
10.1021/ma501746r

10. A multi-method approach to quantify groundwater/surface water-interactions in the semi-arid Hailiutu River basin, northwest China

Author:
Zhi Yang; Yangxiao Zhou; Jochen Wenninger; Stefan Uhlenbrook
Source:
Hydrogeology journal 2014 v.22 no.3 pp. 527-541
ISSN:
1431-2174
Subject:
aquifers; ecosystems; electrical conductivity; equations; groundwater; groundwater flow; rain; rivers; runoff; seepage; semiarid zones; subwatersheds; surface water; temperature; water table; China
Abstract:
... Identification and quantification of groundwater and surface-water interactions provide important scientific insights for managing groundwater and surface-water conjunctively. This is especially relevant in semi-arid areas where groundwater is often the main source to feed river discharge and to maintain groundwater dependent ecosystems. Multiple field measurements were taken in the semi-arid Bula ...
DOI:
10.1007/s10040-013-1091-z

11. ARIMA and regression models for prediction of daily and monthly clearness index

Author:
Jamal Hassan
Source:
Renewable energy 2014 v.68 pp. 421-427
ISSN:
0960-1481
Subject:
equations; latitude; longitude; meteorological data; models; prediction; regression analysis; renewable energy sources; sea level; solar radiation; time series analysis
Abstract:
... Hourly and daily measurements of total and diffuse solar radiation and sunshine duration are analyzed. Three-year measurements of the available meteorological data in Mosul (latitude 36° 19′ N, longitude 43° 09′ E and 223 m above mean sea level) are used in this study. The present work involves two parts; in the first one, monthly mean daily and hourly of total and diffuse solar radiation are anal ...
DOI:
10.1016/j.renene.2014.02.016

12. Abatement of spinosad and indoxacarb residues in pure water by photocatalytic treatment using binary and ternary oxides of Zn and Ti

Author:
J. Fenoll; N. Vela; I. Garrido; G. Pérez-Lucas; S. Navarro
Source:
Environmental science and pollution research international 2014 v.21 no.21 pp. 12143-12153
ISSN:
0944-1344
Subject:
active ingredients; equations; indoxacarb; irradiation; models; photolysis; semiconductors; spinosad; titanium dioxide; zinc
Abstract:
... The photodegradation of indoxacarb, a broad spectrum foliar insecticide and spinosad, a natural insecticide containing two active ingredients, spinosyn A (major component) and spinosyn D (minor component), was studied in aqueous suspensions of binary (ZnO and TiO₂) and ternary (Zn₂TiO₄ and ZnTiO₃) oxides under artificial light (300–460 nm) irradiation. As expected, the influence of the semiconduct ...
DOI:
10.1007/s11356-014-2930-8
PubMed:
24788933

13. Der Ablauf komplizierter Photoreaktionen in zähen Medien / The Evolution of Complicated Photoreactions in Viscous Media

Author:
Heinz Mauser
Source:
Zeitschrift für Naturforschung 2014 v.34 no.12 pp. 1264-1268
ISSN:
1865-7125
Subject:
equations; isomerization; mathematical models; photochemistry
Abstract:
... The calculation of the photochemical yield of simple reactions in viscous media was discussed earlier in a rather formal way. In this paper the basic equation will be derived in a more convenient way and the numeric results of an application to photoisomerization are given. The main purpose is to demonstrate the possibility to handle even complicated reactions. ...
DOI:
10.1515/znc-1979-1232

14. About the limit of detection in X-ray fluorescence analysis

Author:
V. Ya. Borkhodoev
Source:
Journal of analytical chemistry 2014 v.69 no.11 pp. 1041-1046
ISSN:
1061-9348
Subject:
X-radiation; algorithms; confidence interval; detection limit; equations; fluorescence; normal distribution
Abstract:
... Blank experiment in X-ray fluorescence analysis is actually a measurement of the background at the analytical line of an element to be determined. Numerous factors affecting the appearance and registration of the background signal are responsible for its normal distribution. In this work, the possibility of using real samples with low analyte concentrations as blank samples is substantiated. A cri ...
DOI:
10.1134/S1061934814110021

15. Absence of splash singularities for surface quasi-geostrophic sharp fronts and the Muskat problem

Author:
Francisco Gancedo; Robert M. Strain
Source:
Proceedings of the National Academy of Sciences of the United States of America 2014 v.111 no.2 pp. 635-639
ISSN:
0027-8424
Subject:
equations; interphase; mathematical models; water waves
Abstract:
... In this paper, for both the sharp front surface quasi-geostrophic equation and the Muskat problem, we rule out the “splash singularity” blow-up scenario; in other words, we prove that the contours evolving from either of these systems cannot intersect at a single point while the free boundary remains smooth. Splash singularities have been shown to hold for the free boundary incompressible Euler eq ...
DOI:
10.1073/pnas.1320554111
PubMed:
24347645
PubMed Central:
PMC3896209

16. Absorption coefficient regression scheme for splitting radiative heat sources across phases in gas–particulate mixtures

Author:
Jian Cai; Michael F. Modest
Source:
Powder technology 2014 v.265 pp. 76-82
ISSN:
0032-5910
Subject:
absorption; databases; energy; equations; heat transfer; models; powders; regression analysis; temperature
Abstract:
... In a gas–particle mixture particles of different makes and sizes may have different local temperatures and are, therefore, modeled with separate energy equations. If the important radiative heat transfer contributions are determined with sophisticated spectral models such as k-distributions, spectral information is lost during the reordering process, making it difficult to separate the resulting r ...
DOI:
10.1016/j.powtec.2014.01.026

17. Absorption of SO2 with Ammonia-Based Solution in a Cocurrent Rotating Packed Bed

Author:
Chu Guang-Wen; Luo Yong; Shan Cong-Yun; Zou Hai-Kui; Xiang Yang; Shao Lei; Chen Jian-Feng
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.40 pp. 15731-15737
ISSN:
1520-5045
Subject:
absorbents; absorption; alkalinity; ammonia; desulfurization; engineering; equations; liquids; mass transfer; salt concentration; silicon carbide; solutions; sulfur dioxide
Abstract:
... The emission of SO₂ leads to serious environmental problems, which has attracted increasing attention. In this work, a cocurrent rotating packed bed (CO-RPB) with a novel SiC structured packing was employed as a process intensification candidate to upgrade existing desulfurization systems. The effects of rotating speed, gas flow rate, liquid flow rate, SO₂ inlet concentration, total salt concentra ...
DOI:
10.1021/ie502519v

18. Accounting for surface roughness on measurements conducted with PI-SWERL: Evaluation of a subjective visual approach and a photogrammetric technique

Author:
V. Etyemezian; J.A. Gillies; M. Shinoda; G. Nikolich; J. King; A.R. Bardis
Source:
Aeolian research 2014 v.13 pp. 35-50
ISSN:
1875-9637
Subject:
abrasives; blades; dust emissions; equations; friction; grasses; image analysis; photogrammetry; roughness; shear stress; soil; surface roughness; uncertainty; wind erosion
Abstract:
... The effect of small-scale surface roughness on measurements with PI-SWERL (The Portable In-Situ Wind Erosion Laboratory) was investigated using a viscometer-type device. The relationship between shear stress at the soil surface and PI-SWERL rate of rotation (RPM) was determined empirically with test surfaces of varying roughness including fine to coarse sandpaper, small domed structures (H=2.5–2.9 ...
DOI:
10.1016/j.aeolia.2014.03.002

19. Accuracies of genomically estimated breeding values from pure-breed and across-breed predictions in Australian beef cattle

Author:
Vinzent Boerner; David J Johnston; Bruce Tier
Source:
Genetics, selection, evolution 2014 v.46 no.1 pp. 61
ISSN:
0999-193X
Subject:
Angus; Brahman; Hereford; Santa Gertrudis; Shorthorn; beef cattle; body composition; breeding value; carcass characteristics; cattle breeding; crossing; equations; genetic correlation; marker-assisted selection; models; phenotypic correlation; prediction; sires; slaughterhouses; young animals
Abstract:
... BACKGROUND: The major obstacles for the implementation of genomic selection in Australian beef cattle are the variety of breeds and in general, small numbers of genotyped and phenotyped individuals per breed. The Australian Beef Cooperative Research Center (Beef CRC) investigated these issues by deriving genomic prediction equations (PE) from a training set of animals that covers a range of breeds ...
DOI:
10.1186/s12711-014-0061-9
PubMed:
25927468
PubMed Central:
PMC4207895

20. Accuracy of age estimation methods from orthopantomograph in forensic odontology: A comparative study

Author:
Manisha M. Khorate; A.D. Dinkar; Junaid Ahmed
Source:
Forensic science international 2014 v.234 pp. 184.e1
ISSN:
0379-0738
Subject:
boys; chemical analysis; children; equations; forensic sciences; girls; histology; radiography; tissues
Abstract:
... Changes related to chronological age are seen in both hard and soft tissue. A number of methods for age estimation have been proposed which can be classified in four categories, namely, clinical, radiological, histological and chemical analysis. In forensic odontology, age estimation based on tooth development is universally accepted method. The panoramic radiographs of 500 healthy Goan, Indian ch ...
DOI:
10.1016/j.forsciint.2013.09.020

21. Accuracy of aggregate 2- and 3-component models of body composition relative to 4-component for the measurement of changes in fat mass during weight loss in overweight and obese subjects

Author:
Jose Lara; Alexandra M. Johnstone; Jonathan Wells; Susan Jebb; Mario Siervo
Source:
Applied Physiology, Nutrition, and Metabolism 2014 v.39 no.8 pp. 871-879
ISSN:
1715-5320
Subject:
body water; equations; fasting; men; metabolism; mineral content; models; obesity; very low calorie diet; weight loss; women
Abstract:
... The 4-component (4-C) model is the reference method to measure fat mass (FM). Simpler 2-component (2-C) models are widely used to assess FM. We hypothesised that an aggregate 2-C model may improve accuracy of FM assessment during weight loss (WL). One hundred and six overweight and obese men and women were enrolled in different WL programs (fasting, very low energy diet, low energy diet). Body den ...
DOI:
10.1139/apnm-2013-0424

22. Accuracy of predictive equations for the measurement of resting energy expenditure in older subjects

Author:
M. Siervo; S. Bertoli; A. Battezzati; J.C. Wells; J. Lara; C. Ferraris; A. Tagliabue
Source:
Clinical nutrition 2014 v.33 no.4 pp. 613-619
ISSN:
0261-5614
Subject:
algorithms; body mass index; calorimetry; energy requirements; equations; models; prediction; resting energy expenditure; t-test
Abstract:
... The measurement of resting energy expenditure (REE) is important to assess individual total energy requirements in older subjects. The validity of REE prediction equations in this population has not been thoroughly evaluated and therefore the main aim of this analysis was to assess the accuracy of REE prediction equations in older subjects.Weight, height and body mass index (BMI) were measured. RE ...
DOI:
10.1016/j.clnu.2013.09.009

23. An Accurate Classical Simulation of a Two-Dimensional Vibrational Spectrum: OD Stretch Spectrum of a Hydrated HOD Molecule

Author:
Jeon Jonggu; Cho Minhaeng
Source:
Journal of physical chemistry 2014 v.118 no.28 pp. 8148-8161
ISSN:
1520-5207
Subject:
algorithms; equations; molecular dynamics
Abstract:
... An accurate computational method for the classical simulation of the two-dimensional vibrational spectra is presented. The method refines our previous computational method for the third order vibrational response function in the classical limit, and it enables capturing the diagonal elongation and its waiting time (T) dependence widely observed in experimental two-dimensional infrared (2D IR) spec ...
DOI:
10.1021/jp501182d

24. Accurate Ultrasonographic Prediction of Progesterone Concentrations Greater than 1 ng/ml in Holstein lactating dairy cows

Author:
K Kaneko; N Takagi
Source:
Reproduction in domestic animals 2014 v.49 no.6 pp. 985-988
ISSN:
0936-6768
Subject:
Holstein; corpus luteum; dairy cows; equations; lactation; prediction; progesterone; ultrasonography
Abstract:
... To develop an ultrasonographic assay for determining plasma progesterone concentration (P₄) as < 1 ng/ml or ≥ 1 ng/ml, the corpus luteum (CL) area and P₄were measured in 1094 multiparous Holstein cows. The area‐measuring function and frozen images were used to outline and measure CL imaged via ultrasonography, and CL area was estimated as a polygon of a continuation straight line. A significant co ...
DOI:
10.1111/rda.12418

25. Acid hydrolysis of Curcuma longa residue for ethanol and lactic acid fermentation

Author:
Cuong Mai Nguyen; Thanh Ngoc Nguyen; Gyung Ja Choi; Yong Ho Choi; Kyoung Soo Jang; Youn-Je Park; Jin-Cheol Kim
Source:
Bioresource technology 2014 v.151 pp. 227-235
ISSN:
0960-8524
Subject:
Curcuma longa; acid hydrolysis; equations; ethanol; ethanol fermentation; fermenters; furfural; hydroxymethylfurfural; lactic acid; lactic fermentation; sugars; sulfuric acid; wastes
Abstract:
... This research examines the acid hydrolysis of Curcuma longa waste, to obtain the hydrolysate containing lactic acid and ethanol fermentative sugars. A central composite design for describing regression equations of variables was used. The selected optimum condition was 4.91% sulphuric acid, 122.68°C and 50min using the desirability function under the following conditions: the maximum reducing suga ...
DOI:
10.1016/j.biortech.2013.10.039
PubMed:
24240182

26. Acid–Base Properties and Alkali and Alkaline Earth Metal Complex Formation in Aqueous Solution of Diethylenetriamine-N,N,N′,N″,N″-pentakis(methylenephosphonic acid) Obtained by an Efficient Synthetic Procedure

Author:
Cigala Rosalia Maria; Cordaro Massimiliano; Crea Francesco; De Stefano Concetta; Fracassetti Veronica; Marchesi Marco; Milea Demetrio; Sammartano Silvio
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.23 pp. 9544-9553
ISSN:
1520-5045
Subject:
aqueous solutions; binding capacity; calcium; cations; chelating agents; chemical speciation; equations; glass electrodes; industrial applications; ionic strength; ligands; magnesium; metal ions; potassium; potassium chloride; protons; sodium; sodium chloride; specific ion electrodes; temperature; thermodynamics
Abstract:
... Diethylenetriamine-N,N,N′,N″,N″-pentakis(methylenephosphonic acid) (DTPMPA) is used in a wide range of industrial applications, mainly because of its binding ability toward several metal cations. Because of difficulties in its synthesis and purification, very little reliable data have been reported in the literature about the coordination chemistry of this ligand in aqueous solution. For these rea ...
DOI:
10.1021/ie500526r

27. Activated Sericite: An Efficient and Effective Natural Clay Material for Attenuation of Cesium from Aquatic Environment

Author:
D. TIWARI; LALHMUNSIAMA; S.I. CHOI; S.M. LEE
Source:
Pedosphere 2014 v.24 no.6 pp. 731-742
ISSN:
1002-0160
Subject:
aquatic environment; cesium; clay; data collection; electrolytes; equations; hydrochloric acid; mica; models; pH; soil erosion; sorption; sorption isotherms; surface area
Abstract:
... Sericite is mica-based natural clay that is annealed at 800 °C for 4 h, followed by acid activation using 3.0 mol L−1 HCl at 100 °C. The interaction of cesium (I), Cs(I), with sericite could provide useful data for the study of soil erosion or mass water movement utilizing the natural radioactive Cs. In this study sericite and activated sericite were used to assess their suitability in the attenua ...
DOI:
10.1016/S1002-0160(14)60060-6

28. Actual evapotranspiration and canopy resistance measurement of the savannah in the Kouilou basin (Congo-Brazzaville)

Author:
J. J. Nizinski; G. Galat; A. Galat-Luong
Source:
Russian journal of ecology 2014 v.45 no.5 pp. 359-366
ISSN:
1067-4136
Subject:
Tristachya; canopy; dry season; ecophysiology; equations; evapotranspiration; field capacity; heat transfer; humidity; savannas; soil water; soil water content; teams; temperature; volatilization; wet season; Republic of the Congo
Abstract:
... The aim of this work is to study the actual evapotranspiration and surface resistance of the savannah using the Bowen-ratio method for two contrasted periods, dry and rainy season. The reliability of this method has been assessed by comparison with the Monteith equation and the soil-water balance method in a 90% Loudetia arundinacea dominated savannah (Pointe Noire, Congo). Our results relate to t ...
DOI:
10.1134/S1067413614050191

29. Adsorption Kinetics of Reactive Dyes on Ash from Town Heating Plant

Author:
Dragan Djordjevic; Dragan Stojiljkovic; Miodrag Smelcerovic
Source:
Archives of environmental protection 2014 v.40 no.3 pp. 123-135
ISSN:
2083-4810
Subject:
adsorbents; adsorption; coal; combustion; equations; heat; models; reactive dyes; textile industry
Abstract:
... In order to investigate the mechanism of adsorption of reactive dyes from the textile industry on ash from heating plant produced by brown coal combustion, some characteristic sorption constants are determined using Langergren adsorption equations for pseudo-fi rst and pseudo-second order. Combined kinetic models of pseudo-first order and pseudo-second order can provide a simple but satisfactory exp ...
DOI:
10.2478/aep-2014-0024

30. Adsorption and Separation of Carbon Dioxide Using MIL-53(Al) Metal-Organic Framework

Author:
Mishra Prashant; Uppara Hari Prasad; Mandal Bishnupada; Gumma Sasidhar
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.51 pp. 19747-19753
ISSN:
1520-5045
Subject:
adsorbents; adsorption; carbon dioxide; carbon monoxide; coordination polymers; engineering; enthalpy; equations; gases; methane; models; nitrogen; normal distribution; sorption isotherms; temperature
Abstract:
... In this work, we report adsorption isotherms of various industrially important gases, viz. CO₂, CO, CH₄, and N₂ on MIL-53(Al) metal organic framework (MOF). The isotherms were measured in the range of 0–25 bar over a wide temperature range (294–350 K). The structural transformation of the adsorbent and the resulting breathing phenomenon were observed only in the case of CO₂ adsorption at 294 and 3 ...
DOI:
10.1021/ie5006146

31. Adsorption and removal of arsenic (V) using crystalline manganese (II,III) oxide: Kinetics, equilibrium, effect of pH and ionic strength

Author:
Kamel Babaeivelni; Amid P. Khodadoust; Dorin Bogdan
Source:
Journal of environmental science and health 2014 v.49 no.13 pp. 1462-1473
ISSN:
1532-4117
Subject:
adsorption; alkalinity; aluminum oxide; arsenic; bicarbonates; environmental health; equations; groundwater; ionic strength; ions; manganese; pH; sorption isotherms; surface area
Abstract:
... Manganese (II,III) oxide (Mn ₃O ₄) crystalline powder was evaluated as a potential sorbent for removal of arsenic (V) from water. Adsorption isotherm experiments were carried out to determine the adsorption capacity using de-ionized (DI) water, a synthetic solution containing bicarbonate alkalinity, and two natual groundwater samples. Adsorption isotherm data followed the Langmuir and Freundlich e ...
DOI:
10.1080/10934529.2014.937160

32. Adsorption isotherms of some alkyl aromatic hydrocarbons and surface energies on partially dealuminated Y faujasite zeolite by inverse gas chromatography

Author:
Anett Kondor; András Dallos
Source:
Journal of chromatography 2014 v.1362 pp. 250-261
ISSN:
0021-9673
Subject:
adsorbents; benzene; energy; equations; ethylbenzene; gas chromatography; models; sorption isotherms; statistical analysis; temperature; toluene; xylene; zeolites
Abstract:
... Adsorption isotherm data of some alkyl aromatic hydrocarbons (benzene, toluene, ethylbenzene, o-xylene, m-xylene and p-xylene) measured in the temperature range of 423–523K on a partially dealuminated faujasite type DAY F20 zeolite by inverse gas chromatography are presented in this work. The temperature dependent form of Tóth's equation has been fitted to the multiple temperature adsorption isoth ...
DOI:
10.1016/j.chroma.2014.08.047

33. Adsorption of 2-Butyl-2-ethyl-1,3-propanediol from Aqueous Solutions on Activated Carbon: Salt-Out Effect on Equilibrium, Kinetics, and Dynamics

Author:
Chang Ganggang; Bao Zongbi; Zhang Zhiguo; Xing Huabin; Su Baogen; Yang Yiwen; Ren Qilong
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.20 pp. 8592-8598
ISSN:
1520-5045
Subject:
activated carbon; adsorption; aqueous solutions; boron; brine solutions; calcium chloride; commercialization; cost effectiveness; equations; kinetics; magnesium chloride; models; process design; saline water; solvents; sorption isotherms; temperature
Abstract:
... In recent decades, 2-butyl-2-ethyl-1,3-propanediol (BEPD) has been extensively evaluated as an efficient extractant for the recovery of boron from brine solutions commonly present in magnesium chloride. The BEPD leaked into the raffinate must be recovered in order to make the process of solvent extraction cost-efficient. The present study examined the feasibility of a commercialized coal-based act ...
DOI:
10.1021/ie403891r

34. Adsorption of Clofibric Acid from Aqueous Solution by Graphene Oxide and the Effect of Environmental Factors

Author:
Ya-Lei Zhang; Yan-Jing Liu; Chao-Meng Dai; Xue-Fei Zhou; Shu-Guang Liu
Source:
Water, air, and soil pollution 2014 v.225 no.8 pp. 2064
ISSN:
0049-6979
Subject:
adsorption; clofibric acid; environmental factors; equations; graphene; humic acids; ionic strength; models; pH; sorption isotherms; wastewater; wastewater treatment
Abstract:
... Graphene oxide (GO) nanosheets were used as adsorbent material for the removal of clofibric acid (CA) which was difficult to be removed from wastewater by traditional wastewater treatment technique. Adsorption kinetics, adsorption equilibrium, and effect of pH, ionic strength, and humic acid (HA) of the adsorption of CA onto the GO nanosheets in aqueous solution were investigated in detail. Adsorp ...
DOI:
10.1007/s11270-014-2064-0

35. Adsorption of Ni(II) and Cd(II) from water by novel chelating sponge and the effect of alkali-earth metal ions on the adsorption

Author:
Cheng Cheng; Jinnan Wang; Xin Yang; Aimin Li; Corvini Philippe
Source:
Journal of hazardous materials 2014 v.264 pp. 332-341
ISSN:
0304-3894
Subject:
EDTA (chelating agent); Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorption; cadmium; calcium; energy; enthalpy; equations; hydrochloric acid; magnesium; metal ions; nickel; polymerization; polyvinyl alcohol; scanning electron microscopy
Abstract:
... Novel chelating sponge (PVA-M-H) was prepared with polyvinyl alcohol by graft polymerization and nucleophilic substitution. E.A, SEM, FT-IR, 13CNMR, and XPS analyses were used to characterize PVA-M-H. The equilibrium adsorption capacities of PVA-M-H for Ni(II) and Cd(II) were 65.39 and 125.11mgg−1, respectively. Within the range of 278–308K, the adsorption enthalpy changes of Ni(II) and Cd(II) on ...
DOI:
10.1016/j.jhazmat.2013.11.028

36. Adsorption of Orange G dye on nano zirconia: error analysis for achieving the best equilibrium and kinetic modeling

Author:
Deepak Gusain; Sidhdh Nath Upadhyay; Yogesh Chandra Sharma
Source:
RSC advances 2014 v.4 no.36 pp. 18755-18762
ISSN:
2046-2069
Subject:
adsorption; aqueous solutions; dyes; equations; kinetics; models; nanomaterials; sorption isotherms; zirconium oxide
Abstract:
... Nano zirconia was used for the adsorption of Orange G dye from aqueous solutions. The best fit linear and nonlinear equations for the two adsorption isotherms and kinetic models, namely the Langmuir and Freundlich adsorption isotherms and pseudo-first-order and pseudo-second-order equations, were compared. The sum of the normalized errors and the coefficient of determination were used to determine ...
DOI:
10.1039/c4ra00323c

37. Adsorption of Proteins at the Solution/Air Interface Influenced by Added Nonionic Surfactants at Very Low Concentrations for Both Components. 2. Effect of Different Surfactants and Theoretical Model

Author:
Fainerman V. B.; Lotfi M.; Javadi A.; Aksenenko E. V.; Tarasevich Yu. I.; Bastani D.; Miller R.
Source:
Langmuir 2014 v.30 no.43 pp. 12812-12818
ISSN:
1520-5827
Subject:
adsorption; air; alcohols; beta-casein; beta-lactoglobulin; equations; models; nonionic surfactants; phosphine; sorption isotherms; surface tension
Abstract:
... The influence of the addition of the nonionic surfactants dodecyl dimethyl phosphine oxide (C₁₂DMPO), tetradecyl dimethyl phosphine oxide (C₁₄DMPO), decyl alcohol (C₁₀OH), and C₁₀EO₅ at concentrations between 10–⁵ and 10–¹ mmol/L to solutions of β-casein (BCS) and β-lactoglobulin (BLG) at a fixed concentration of 10–⁵ mmol/L on the surface tension is studied. It is shown that a significant decreas ...
DOI:
10.1021/la502964y

38. Adsorption of benzyldimethyldodecylammonium chloride onto stainless steel using the quartz crystal microbalance and the depletion methods: an optimisation study

Author:
Ibrahim E. Salama; Bernard P. Binks; Paul D.I. Fletcher; David I. Horsup
Source:
Colloids and Surfaces A: Physicochemical and Engineering Aspects 2014 v.447 pp. 155-165
ISSN:
0927-7757
Subject:
adsorption; aqueous solutions; corrosion; energy; equations; quartz; sorption isotherms; stainless steel
Abstract:
... The adsorption behaviour of benzyldimethyldodecylammonium chloride (C12BDMAC) corrosion inhibitor from aqueous solutions onto a stainless steel surface has been investigated using the quartz crystal microbalance (QCM) technique and the depletion-HPLC method. Three different experimental procedures were used to carry out the adsorption measurements using the QCM. The results revealed that the emplo ...
DOI:
10.1016/j.colsurfa.2014.01.034

39. Adsorption of sediment phosphorus by porous ceramic filter media coated with nano-titanium dioxide film

Author:
Yi Zhang; Feng He; Shibin Xia; Lingwei Kong; Dong Xu; Zhenbin Wu
Source:
Ecological engineering 2014 v.64 pp. 186-192
ISSN:
0925-8574
Subject:
adsorbents; adsorption; aquatic environment; ceramics; coatings; equations; kinetics; lakes; mixing; pH; phosphorus; pollution; sediment transport; sediments; sol-gel processing; temperature
Abstract:
... The porous ceramic filter media (PCFM) was applied to reduce the release of P in lake sediment and we wondered if the nano-TiO2 coating could enhance the P adsorption by PCFM alone in lake sediments. The nano-TiO2 film coated on PCFM in this study was prepared by sol–gel process, and the adsorption properties of sediment P in all fractions by the nano-TiO2 film coated PCFM were investigated throug ...
DOI:
10.1016/j.ecoleng.2013.12.056

40. Adsorption performance of a MIL-101(Cr)/graphite oxide composite for a series of n-alkanes

Author:
Xuejiao Sun; Yujie Li; Hongxia Xi; Qibin Xia
Source:
RSC advances 2014 v.4 no.99 pp. 56216-56223
ISSN:
2046-2069
Subject:
activated carbon; activation energy; adsorption; desorption; equations; graphene; octane; pentane; zeolites
Abstract:
... The adsorption performance of the MIL-101@GO composite for a series of linear long chain alkanes (from n-pentane to n-octane) was investigated for the first time. The MIL-101@GO composite based on MIL-101(Cr) and graphite oxide (GO) was prepared, characterized and tested for adsorption and desorption of n-alkanes. Isotherms of a series of n-alkanes on MIL-101@GO were measured. Temperature-programm ...
DOI:
10.1039/c4ra08598a

41. Adsorption-Desorption of Myo-Inositol Hexakisphosphate on Hematite

Author:
Yupeng Yan; Biao Wan; Fan Liu; Wenfeng Tan; Mingming Liu; Xionghan Feng
Source:
Soil science 2014 v.179 no.10-11 pp. 476-485
ISSN:
0038-075X
Subject:
Fourier transform infrared spectroscopy; adsorption; aquatic environment; bioavailability; citrates; desorption; equations; hematite; molecular weight; myo-inositol; pH; phosphates; potassium chloride; reflectance; soil; zeta potential
Abstract:
... Adsorption, desorption, and precipitation reactions at environmental interfaces impact the bioavailability, mobility, and fate of organic phosphates in terrestrial and aquatic environments. Myo-inositol hexakisphosphate (IHP) is the most abundant organic phosphate in soils. The adsorption/desorption characteristics of IHP on/from hematite were studied using batch adsorption and desorption experime ...
DOI:
10.1097/SS.0000000000000091

42. Adsorptive characteristics of modified talcum powder in removing methylene blue from wastewater

Author:
Liu Wenlei; Zhao Shanlin; Cui Shuang; Zhang Jinhui; Li Ping; Yang Shuangchun
Source:
Chemical speciation and bioavailability 2014 v.26 no.3 pp. 167-175
ISSN:
0954-2299
Subject:
adsorbents; adsorption; equations; methylene blue; models; nitric acid; pH; talc; temperature; textile mill effluents; wastewater
Abstract:
... Modified talcum powder prepared by physical purification and 50% (w/w) HNO₃ acid activation was characterised by X-ray diffraction, scanning electron microscopy and energy dispersive spectrometry. The modified talcum powder was used for the methylene blue adsorption in wastewater. Adsorption contact time, pH, adsorption temperature, initial mass concentration, and solid content were investigated. ...
DOI:
10.3184/095422914X14047538761323

43. Adsorptive recovery and purification of prodigiosin from methanol/water solutions of Serratia marcescens fermentation broth

Author:
Ruey-Shin Juang; Chun-Lan Yeh
Source:
Biotechnology and bioprocess engineering 2014 v.19 no.1 pp. 159-168
ISSN:
1226-8372
Subject:
Serratia marcescens; adsorption; alum; coagulation; desorption; equations; fermentation; methanol; resins; sorption isotherms
Abstract:
... The use of macroporous polymeric adsorption resins for the recovery and purification of prodigiosin from fermentation broth of Serratia marcescens SMDR was systematically studied, in which the broth was pretreated by coagulation with alum and the resulting precipitate was leached by methanol/water solution. Of the seven resins tested, Diaion HP-20 resin was selected considering the adsorption and ...
DOI:
10.1007/s12257-013-0547-2

44. Advanced exergy analysis and exergoeconomic performance evaluation of thermal processes in an existing industrial plant

Author:
Goran D. Vučković; Mirko M. Stojiljković; Mića V. Vukić; Gordana M. Stefanović; Edib M. Dedeić
Source:
Energy conversion and management 2014 v.85 pp. 655-662
ISSN:
0196-8904
Subject:
air; engineering; equations; exergy; heat; rubber; steam
Abstract:
... Exergy analysis and exergoeconomics are often used to evaluate industrial energy systems performance from the thermodynamic and economic points of view. While the classical exergy analysis can be used to recognize the sources of inefficiency and irreversibilities, so called advanced exergy analysis is convenient for identifying real potential for thermodynamic improvements of the system by splitti ...
DOI:
10.1016/j.enconman.2014.03.049

45. Advances in membrane emulsification. Part B: recent developments in modelling and scale‐up approaches

Author:
Fotis Spyropoulos; David M. Lloyd; Robin D Hancocks; Aleksandra K Pawlik
Source:
Journal of the science of food and agriculture 2014 v.94 no.4 pp. 628-638
ISSN:
0022-5142
Subject:
droplet size; emulsifying; emulsions; energy; equations; microstructure; models
Abstract:
... Membrane emulsification is a promising process for formulating emulsions and particulates. It offers many advantages over conventional ‘high‐shear’ processes with narrower size distribution products, higher batch repeatability and lower energy consumption commonly demonstrated at a small scale. Since the process was first introduced around 25 years ago, understanding of the underlying mechanisms i ...
DOI:
10.1002/jsfa.6443
PubMed:
24122852

46. Aerodynamics performance of continuously variable speed horizontal axis wind turbine with optimal blades

Author:
Ahmad Sedaghat; M. El Haj Assad; Mohamed Gaith
Source:
Energy 2014 v.77 pp. 752-759
ISSN:
0360-5442
Subject:
aerodynamics; blades; equations; generators (equipment); geometry; models; momentum; wind speed; wind turbines
Abstract:
... For conventional HAWT (horizontal axis wind turbines), the rotor speed is maintained constant while the blade tip speed changes continuously. This reduces considerably the power performance of the wind turbine particularly at high wind speeds where the tip speed ratio is small. With growth of variable speed generators, a compact BEM (blade element momentum) analysis is derived to design optimal bl ...
DOI:
10.1016/j.energy.2014.09.048

47. The Affinity of Indium(III) for Nitrogen-donor Ligands in Aqueous Solution. A Study of the Complexing of Indium(III) with Polyamines by Differential Pulse Voltammetry, Density Functional Theory, and Crystallography

Author:
James M Harrington; Karen A. Oscarson; S. Bart Jones; Joseph H. Reibenspies; Libero J. Bartolotti; Robert D. Hancock
Source:
Zeitschrift für Naturforschung 2014 v.62 no.3 pp. 386-396
ISSN:
0932-0776
Subject:
acetates; ammonia; aqueous solutions; chemical bonding; crystallography; dielectric properties; equations; indium; ligands; metal ions; methodology; perchlorates; polyamines
Abstract:
... The affinity of In(III) for N-donor ligands was investigated by differential pulse voltammetry, DFT calculations, and crystallography. The structure of [In(tpen)(CH₃COO)](ClO₄)₂ ・ 0.5H₂O (1) is reported (tpen = N,N,N´ ,N´-tetrakis(2-pyridylmethyl)ethylenediamine): Monoclinic, P2₁/n, a = 8.687(4), b = 7.767(8), c = 20.432(10) Å , β = 93.372(8)°, Z = 4, R = 0.0518. The In(III) center is 7-coordinate ...
DOI:
10.1515/znb-2007-0312

48. Age prediction formulae from radiographic assessment of skeletal maturation at the knee in an Irish population

Author:
Jean E. O’Connor; Joseph Coyle; Conor Bogue; Liam D. Spence; Jason Last
Source:
Forensic science international 2014 v.234 pp. 188.e1
ISSN:
0379-0738
Subject:
age determination; epiphyses; equations; females; males; prediction; radiography; regression analysis; skeleton
Abstract:
... Age estimation in living subjects is primarily achieved through assessment of a hand–wrist radiograph and comparison with a standard reference atlas. Recently, maturation of other regions of the skeleton has also been assessed in an attempt to refine the age estimates. The current study presents a method to predict bone age directly from the knee in a modern Irish sample. Ten maturity indicators ( ...
DOI:
10.1016/j.forsciint.2013.10.032

49. Aging of red wines made from hybrid grape cv. BRS Violeta: Effects of accelerated aging conditions on phenolic composition, color and antioxidant activity

Author:
Ellen Silva Lago-Vanzela; Dielle Pierotti Procópio; Edimar Aparecida Filomeno Fontes; Afonso Mota Ramos; Paulo César Stringheta; Roberto Da-Silva; Noelia Castillo-Muñoz; Isidro Hermosín-Gutiérrez
Source:
Food research international 2014 v.56 pp. 182-189
ISSN:
0963-9969
Subject:
Vitis vinifera; activation energy; anthocyanidins; anthocyanins; antioxidant activity; color; cultivars; equations; grapes; half life; hybrids; red wines; sensory properties; temperature; thermal degradation; wine aging
Abstract:
... Aging is an enological technique usually employed with Vitis vinifera wines for improving and stabilizing wine sensory attributes like red wine color. However, red wines made from non-vinifera grape cultivars are considered not suitable for classic wine aging because they are prone to color loss during processing and storage, mainly due to the major occurrence of non-acylated anthocyanidin 3,5-dig ...
DOI:
10.1016/j.foodres.2013.12.030

50. Air exchange and ventilation efficiencies of a monospan greenhouse with one inflow and one outflow through longitudinal side openings

Author:
Meir Teitel; Erez Wenger
Source:
Biosystems engineering 2014 v.119 pp. 98-107
ISSN:
1537-5110
Subject:
air; air flow; equations; greenhouses; microclimate; mixing; models; wind speed
Abstract:
... Until about a decade ago, greenhouse microclimates were analysed using a simplified approach assuming a perfectly stirred enclosure. Demands for efficient and sustainable greenhouse operations, stimulated intensive research that focused into the distributed microclimate within greenhouses. Since the distributed microclimate and the air-exchange rate are interconnected the latter is important. Thre ...
DOI:
10.1016/j.biosystemseng.2013.11.001