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... This theoretical study examined the impact of the degree of mixing, nonlinear particle breakage, and screen opening size on the particle size distribution (PSD) and mass hold-up in continuous dry mills with internal classification. A cell-based population balance model (PBM) incorporating a non-ideal screen model was formulated, wherein the back-mixing ratio and number of cells modulated the exten ...
... This study attempts to provide a more precise and comprehensive model for stream-wise velocities in turbulent smooth-wall open channel flows. Velocity profiles are obtained from the resolution of two ordinary differential equations. The first is derived from the Reynolds-averaged Navier-Stokes (RANS) equation while the second is from the equilibrium between turbulent kinetic energy (TKE) productio ...
... To support agroecological transition aimed at sharply reducing the use of synthetic inputs, agricultural systems must undergo in-depth change in which biological processes are enhanced with a view to providing ecosystem services. This transformation of the cropping systems requires design processes which should rely on the exploration of science-based and expert-based knowledge and of alternative ...
... It is great importance to clarify the mechanism of the membrane fouling in the early stage of filtration. In this study, a novel model based on the loss of effective filtration area was established to predict the variation of the transmembrane pressure (TMP) at the constant flux mode. The coefficient of available membrane filtration area (ω) was adopted to describe the inflection point varying fro ...
data analysis; diet; dieting; linear models; mixing; swine
Abstract:
... This study investigates the effects of space allowance (SA), mixing and phase feeding (PF) on performance of grower-finisher pigs. Three trials (T) were conducted. In T1 and T2, 345 pigs/trial were moved to finisher stage at 11 weeks of age and assigned to two SAs: 0.96 (n = 15 pens; 10 pigs/pen) and 0.78 (n = 15; 13 pigs/pen) m²/pig. Mixing was applied to 5 pens of each SA leading to a 2 × 2 fact ...
... We first study the optimality of a committed policy mix of tax and subsidy to control pollution when firms are involved in abatement technology R&D that is subject to knowledge spillovers. Then a comparison of tax and subsidy is provided when the policy mix is not available and the regulator can use only one single policy. Two different behavioral assumptions for the firms are examined: when firms ...
chemical communication; electrolytes; ionic liquids; lithium batteries; mixing; salt concentration
Abstract:
... The safety of Li-ion batteries is one of the most important factors, if not the most, determining their practical applications. We have found that free carbonate-based solvent molecules in the hybrid electrolyte system can cause severe safety concerns. Mixing ionic liquids with a carbonate-based solvent as the co-solvent at a fixed salt concentration of 1 M LiPF₆ can lead to free carbonate-based m ...
... Quasi-2D perovskites are potential materials for optoelectronics like light-emitting diodes (LEDs); compared to their 3D counterparts, they are considered more stable against the atmosphere and more efficient in exciton confining. However, the simultaneous formation of different phases in the quasi-2D perovskite film, i.e., the phase impurity issue, lowers the device performance. We propose using ...
... A systematic investigation concerning the particle mixing behavior in a flighted rotary drum through experiments and numerical simulations using DEM was performed in this study. The DEM input parameters were calibrated herein based on experimental observations. The effects of the number of flights, the height of the flights, and the drum filling degree on the mixing performance were analyzed by us ...
... Droplet-based microreactors often uncover fascinating phenomena and exhibit diverse functionality, which make them applicable in various fields. Liquid marbles (LMs) are non-wetting droplets coated with particles, and these features highlight their potential as microreactors. However, sophisticated experimental designs are typically hindered because it is difficult to obtain sufficient substance m ...
... Mixtures of colloids and supramolecular polymers may exhibit stimuli-responsive phase behaviour. However, in theoretical descriptions of such systems, the polymers are commonly described either as flexible chains or as rigid rods, while in experimental systems supramolecular polymers usually fall in between these two limits. We expect the flexibility of the polymers to have a profound effect on th ...
... The microtubule cytoskeleton is critical for maintenance of long and long-lived neurons. The overlapping array of microtubules extends from the major site of synthesis in the cell body to the far reaches of axons and dendrites. New materials are transported from the cell body along these neuronal roads by motor proteins, and building blocks and information about the state of affairs in other parts ...
... Broken rice can gather in the core of a cylinder during rice grain separation because it is wrapped by whole rice and cannot contact the indents causing low separation efficiency. To improve contact with the indented cylinder by broken rice the actions of a baffle were simulated using the discrete element method. By analysing rice movement in the mixing area under the action of baffle, the mechani ...
... In-depth elucidation of how molecules are electrically polarized would be one key factor for understanding the properties of those molecules under various thermodynamic and/or spatial conditions. Here this problem is tackled for the case of hydrogen-bonded water by conducting singular value decomposition of the electron density changes that occur upon electrostatic polarization. It is shown that a ...
blenders; mixing; particles; powders; sampling; simulation models; standard deviation; technology
Abstract:
... In the present study, a six-directional sampling method (SDSM) and six-directional sampling mean mixing indices (SDS-mMI) [i.e., SDS-mLMI, SDS-mRSD, and SDS-mSMI] based on SDSM are proposed for the first time by considering Lacey mixing index (LMI), relative standard deviation (RSD) and sub-domain mixing index (SMI) as basis to assess the solids blending performance in DEM simulations. The propose ...
... Dynamic nuclear polarization (DNP) is a powerful method to enhance NMR sensitivity. Much progress has been achieved recently to optimize DNP performance at high magnetic fields in solid-state samples, mostly by utilizing the solid or the cross effect. In liquids, only the Overhauser mechanism is active, which exhibits a DNP field profile matching the EPR line shape of the radical, distinguishable ...
... Suppressing intramolecular vibration of non-fullerene acceptors (NFAs) by molecular rigidification has been proven to be an effective way to reduce the non-radiative recombination loss and energetic disorder of organic solar cells (OSCs). Thus far, extensive attention has been drawn on rigidifying the fused-ring backbones of NFAs, whereas the highly flexible alkyl side chains are barely concerned. ...
aggression; barrows; behavior change; least squares; linear models; mixing; nose; play activities
Abstract:
... This study investigated potentially affiliative behaviors in grow-finish pigs, how these behaviors changed over time and their relationship to agonistic behaviors. A total of 257 Yorkshire barrows were observed for agonistic (reciprocal fights, attacks) and affiliative (nosing, play, non-agonistic contact) behaviors after mixing (at 10 weeks of age), and weeks 3, 6, and 9 after mix. The least squa ...
... We report the results of two pre-registered experiments designed to study the reinforcement paradox: increased incentives often fail to increase and sometimes even decrease performance in Bayesian updating tasks. We argue that, in the presence of win/loss cues, higher incentives have two countervailing effects: increased error rates for reinforcement behavior (win-stay, lose-shift) and increased p ...
... The flow behavior of polydisperse particles in rolling mode rotating drum is important in industry, but it is still not clear. In this work, the discrete element method (DEM) is used to explore the flow of particles in the three-dimensional drum. After the accuracy of simulation verified by the experimental data from literature, the particle bed is divided into active layer and passive layer. The ...
algorithms; exhibitions; hyperspectral imagery; journals; linear models; mixing; remote sensing
Abstract:
... Blind hyperspectral unmixing is a key technique for mixing spectral analysis, which separate the endmember spectra from hyperspectral image and evaluate their fractional abundances. Recent studies have focused on addressing spectral variability during unmixing procedure, and many new models have been proposed to characterize endmember variation. To further improve the unmixing performance, a local ...
... The water-soluble pollutant including dye and heavy metal was a challenge to the water and environment. Adsorption was among one of the most promising technique for the recycle of dye but it usually required a long contact time. A membrane-like adsorbent was fabricated by mixing and depositing tannic acid, chitosan and metal organic framework (MOF, UIO-66) on polyethersulfone (PES) membrane in thi ...
... Due to favourable efficiency and low cost, dual-response fluorescent probes play critical roles in the development of fluorescence assay system. Herein, a novel dual-response fluorescent probe (RDCN) was designed and synthesized for the detection of two environmental contaminants: hydrazine (N₂H₄) and cyanide (CN⁻). Probe RDCN exhibited discriminative sensing behaviors to N₂H₄ and CN⁻ with differe ...
absorption; cells; detection; early diagnosis; fluorescent dyes; hydrazine; hydrolysis; image analysis; mixing; monitoring; sampling; water
Abstract:
... According to the mechanism of hydrazine to ester bond elimination, a novel ratiometric fluorescent probe (FCP) based on the fluorescein-coumarin structure is designed and synthesized for detecting hydrazine. The obvious red shift in the absorption and fluorescence spectrum is caused by the hydrolysis of the ester bond of FCP by upon mixing with hydrazine. The proposed FCP probe is shown to have li ...
hyperspectral imagery; journals; least squares; mixing; objectives; remote sensing; weight
Abstract:
... Hyperspectral unmixing technique is a conventional approach addressing the mixed pixel issue. In this paper, we present an autoencoder (AE) network that deals with estimating the abundances in hyperspectral images (HSIs) given the endmembers. In the suggested network, the mixed pixel issue in a supervised scenario is investigated since the weights of the decoder are set equal to the endmembers. Mo ...
... A novel efficient AgCl-based heterojunction photocatalyst was synthesized by in-situ electrostatic-assembly of carbon dots (CDs) for the first time. Distinct from the physical blending between CDs and AgCl (CDs + AgCl), CDsAg was heterojuncted into AgCl in this work. The resulting CDsAg-AgCl photocatalyst was endowed with significantly enhanced visible-light photocatalytic performances in both dye ...
... This review reports the progress on the recent development of droplet micromixers. Passive droplet micromixers and active droplet micromixers are studied, respectively. Design, simulation, fabrication and application of a variety of droplet micromixers are expounded and analysed. This paper will provide a valuable reference to designers who research droplet micromixers for various applications. ...
blood serum; carbon quantum dots; cattle; chemical bonding; cysteamine; cytotoxicity; detection limit; fluorescence; fluorescent dyes; human cell lines; image analysis; mixing; nanosilver; signal-to-noise ratio
Abstract:
... In this study, we describe the construction of an “off-on” fluorescent probe based on carbon dots (CDs) and silver nanoparticles (AgNPs) mixture for sensitive and selective detection of cysteamine. By mixing AgNPs with CDs solution, the fluorescence of CDs was significantly decreased due to the inner filter effect (IFE). Upon addition of cysteamine to the mixed aqueous of CDs and AgNPs, the silver ...
basins; ecological function; ecological restoration; economics; ecosystems; forest policy; forests; grasses; linear programming; mixing; models; planting; resource allocation; shrubs; vegetation cover; water; water resources; watersheds; Yellow River
Abstract:
... Although aggressive tree planting and vegetation recovery have enhanced the ecosystem functions and services of the Yellow River (YR) basin, there have been unintended consequences. The primary goal of this study is to explore the implications of alternatives of vegetation cover restoration to water resource allocation in the YR basin using a linear programming model that maximizes the ecological ...
... It was extremely urgent to develop some simultaneous and sensitive biosensors for detecting multiplex serum tumor markers (TMs) for early screening of cancers. Herein, a multiplex assay was developed based on the DNA-LaMnO₃ (DNA-LMO) perovskite encoded probes and targets mediated competitive replacement strategy. Alpha fetoprotein (AFP), carcinoembryonic antigen (CEA) and prostate specific antigen ...
... Addressing dual crisis of fossil fuels i.e. environmental as well as gradually decreasing reserves, design of a nationwide robust supply chain network based on bio-energy has been presented in this work. The four echelon supply chain caters the target of blending 20% bio fuels with conventional fuel during 2018–2026. The mixed integer linear programming model considers handling of multiple types o ...
... In situ-forming injectable hydrogels are smart biomaterials that can be implanted into living bodies with minimal invasion. Due to pioneer work of Prof. Sung Wan Kim in this field, injectable hydrogels have shown great potentials in many different biomedical applications. Biodegradable and injectable hydrogels can be administered at room temperature as viscous polymer sols. They will degrade after ...
X-radiation; aluminum; behavior; bottom ash; capillarity; carbonation; cement; coal; compression strength; construction industry; construction materials; decline; design; durability; fluorescence; fly ash; lead; manufacturing; mixing; municipal solid waste; pastes; porosity; power plants; pressure; shrinkage; waste incineration; water uptake
Abstract:
... Considerable amounts of municipal solid waste incinerator bottom ashes are produced yearly without an adequate outlet. Given the established reactivity of the ash when subjected to an alkali medium, there is considerable scope to valorize it within the Construction industry in an alkali-activated material, thereby reducing the significant environmental pressure of the cement industry. This study a ...
... Pesticides are contributing in current agriculture to fulfil the need of raising population. Uses of pesticides are not limited to agriculture, but they are also used to control over domestic pests, disease insect vectors and home gardening. But they are very toxic in nature and pose acute risks on the human health and the environment. They negatively affected the agricultural workers and trigger ...
... Salvia officinalis L. is a good source of antioxidant compounds such as phenolic diterpenes carnosic acid and carnosol. From 17 deep eutectic solvents (DESs) used, choline chloride: lactic acid (1:2 molar ratio) was found to be the most suitable for the extraction of targeted compounds. The influence of H₂O content, extraction time, and temperature (for stirring and heating and for ultrasound-assi ...
fields; frequency; hysteresis; magnetic fields; magnetic materials; magnetic properties; measurement; mixing
Abstract:
... The paper presents a new experimental method of the magnetic hysteresis loop investigation and the constructed measurement instrument. The principle of operation is to mix two magnetic fields: the first of these fields has a very low amplitude, a shape of sine wave (AC bias) and the frequency range order of 10–10⁴ Hz. The second field has a very low frequency (order 10⁻² Hz), a high amplitude and ...
dispersibility; exhibitions; flow; mixing; spatial variation; testing; water
Abstract:
... In this study, the performance of two routing procedures were evaluated to estimate the two-dimensional dispersion coefficients. The two-dimensional Stream-Tube Routing Procedure (2D ST-RP) has been widely used to obtain the dispersion coefficients from measured concentration-time curves under the frozen cloud assumption. Meanwhile, the Spatial Routing Procedure (2D S-RP) employs the spatial distr ...
... Combining qualitative and quantitative methods and data is crucial to understanding the complex dynamics and often interdisciplinary nature of conservation. Many conservation scientists use mixed methods, but there are a variety of mixed methods approaches, a lack of shared vocabulary, and few methodological frameworks. We reviewed articles from 2 conservation‐related fields that often incorporate ...
... In the current study, the mixing of bi-disperse particles in a horizontal paddle mixer was investigated through the sampling experimental technique and discrete element method (DEM). LIGGGHTS software was employed as the DEM solver. A close agreement between the simulation and experimental data was observed. Using the calibrated DEM model, the influence of some operating parameters such as impelle ...
... Bangalore, one of the Indian metropolitan cities, has witnessed rapid urbanization during the last decade with an overwhelming spatial growth of 696 sq. km to 2185 sq.km within a span of ten years (2006 to 2016). With this exponential rate of urban growth, the city is experiencing a shift in its micro- climatic condition. This paper aims to identify the surface urban heat island (SUHI) effect by c ...
... A pilot scale experimental setup was constructed to investigate the effect of hydrodynamics on bed-to-wall heat transfer in a gas-solid fluidized bed with external solids circulation. The bubble size and velocity are increased rapidly with gas velocity at bubbling fluidization. The increased gas velocity promotes the increase in bubble frequency at turbulent fluidization. The external solids circu ...
... Plant pollen is an important alternative food for generalist phytoseiid mites ensuring survival and supporting population build-up during periods of prey scarcity. However, in the short term predator efficacy can be negatively affected by pollen provisioning as a consequence of predator satiation or when pollen is preferred over prey. This is counteracted by the fact that, combining pollen with pr ...
... This work considered the utilisation of environmentally friendly biodegradable materials instead of conventional polymeric materials, in order to prevent further environmental endangerment by accumulation of non-biodegradable materials. Thermoplastic starch (TPS) is an exemplary environmentally friendly biodegradable material. Blending TPS with other biodegradable polymers such as biodegradable po ...
... Poly(ethylene terephthalate) (PET) is one of the most prevalent polymers in the world due to its combined thermal, mechanical, and gas barrier attributes. Blending PET with other polymers is an appealing strategy to further tailor properties to meet the needs of an even more diverse range of applications. Most blends with PET are macrophase-separated; only a few miscible systems have been reported ...
... The application of reclaimed asphalt pavement (RAP) materials has become an important subject of sustainable development in the field of road construction. In addition, the low carbon asphalt technology (i.e. warm mix technology) is recently employed to reduce the energy consumption and emission in RAP application. Generally, during the RAP mixing process, softer asphalt or rejuvenator is typicall ...
... Carbon nanofillers are widely used to blend with polymers for fabricating high-performance polymer nanocomposites (PNCs) toward structural, electronic and sensory material applications. However, it is generally of challenge to achieve significant property improvement by using single carbon nanofiller. Alternatively, using hybrid carbon nanofillers has been proved to be a facile and promising strat ...
alloys; archaeology; cakes; chemical analysis; copper; lead; mixing; raw materials; tin; China
Abstract:
... We have reviewed the published chemical analyses of the bronze coinage produced in pre-Qin China (before 221 BCE), with the aim of understanding the alloying practices which took place before these coins were cast. Conventionally it has been assumed that they were made to a ‘target composition’, by separately adding lead and tin to copper. However, by characterizing the composition of the differen ...
... Cities have been identified as key actors in climate change mitigation. Nature based carbon sinks have been suggested as a means of mitigating the greenhouse gas emissions of cities. Although there are several studies on the carbon storage and sequestration (CSS) of urban green, the role of residential sites is not fully understood. In addition, the carbon storage of soils is often excluded. Also ...
... A tetraphenylethylene (TPE)-based tetraamidine (1a) for the recognition of dicarboxylic acids has been designed and synthesized. The obtained tetraamidine 1a selectively recognizes α,ω-dicarboxylic acids 2 in a DMSO solution. The improvement of the availability of the single solvent, DMSO, and a higher methylene chain-length selectivity for α,ω-dicarboxylic acids 2 (i.e., selectively recognize 2c- ...