bluuebunny/crossref_metadata_2025_split huggingface dataset:
High‐resolution spatiotemporal analysis of hydrologic connectivity in the historical floodplain of straightened lowland agricultural streams
Authors: Marchand Jean‐Philippe , Biron Pascale , Buffin‐Bélanger Thomas , Larocque Marie 
Published: May 2022

AbstractIn agricultural watersheds, human interventions such as channel straightening have disrupted the hydrologic connectivity between headwater streams and their riparian environment and have thus undermined the ecological services provided by these small streams. Knowledge of the hydrologic connectivity between these streams and their immediate environment (shallow riparian groundwater in the historical floodplain and on adjacent hillslopes) in human‐impacted settings is critical for understanding and restoring these hydrological systems but remains largely incomplete. The objective of this research is to investigate the hydrogeomorphological conditions controlling hydrologic connectivity in the historical floodplain of straightened lowland streams. Detailed measurements on the spatiotemporal variability of groundwater‐surface water interactions between straightened reaches, historical floodplain including abandoned meanders, and the adjacent hillslopes were obtained using a dense network of piezometers at two sites in the St. Lawrence Lowlands (Quebec, Canada). Results show that the complex mechanisms controlling hydrologic connectivity in naturally meandering lowland rivers also operate in highly disturbed straightened reaches, despite backfilling and agricultural practices. The pre‐straightening hydrogeomorphological configuration of the floodplain partly explains the complex patterns of piezometric fluctuations observed at the sites. The apex of the abandoned meanders stands out as a focal area of hydrologic connectivity as water levels indicate pressure transfer that may reflect flows from the stream, the hillslopes, and the surrounding historical floodplain. These unique field observations suggest that abandoned meanders should be promoted as key elements of restoration strategies in lowland agricultural straightened headwater streams.
Kinetics of Methane Hydrate Formation in the Presence of Silica Nanoparticles and Cetyltrimethylammonium Bromide
Authors: Zhai Jiaqi , Shang Liyan , Zhou Li , Yao Xiuqing , Bai Junwen , Lv Zhenbo 
Published: May 2022

AbstractHydrate technology promoted the development of natural gas industry. Nanoparticles showed a broad prospect for hydrate technology because of their excellent mass and heat transfer characteristics. At an experimental temperature of 275.15 K and pressure of 5 MPa, silica nanoparticles and cetyltrimethylammonium bromide (CTAB) were used to investigate the characteristics (pressure drop, gas storage capacity, and formation rate). The experimental results showed that the higher the concentration of silica nanofluid, the shorter the induction time. Among the four silica nanoparticles concentration (0.1, 0.2, 0.3, and 0.5 wt%) tested in this work, the concentration of 0.3 wt% was optimal for the enhancement of CH4 hydrate formation. In the complex system composed of silica nanoparticles and CTAB, the surface of silica nanoparticles was positively charged by hydrolysis. The cationic active groups ionized by surfactants were aggregated to the surface of the particles under the Coulomb force. Methane molecules were gathered to hydrophobic groups by non‐polar adsorption, which was more conducive to hydrate formation. Compared to silica nanofluid, the total time for hydrate formation decreased by 66.2 %.
Magnetically Separable Zn1‐xCu0.5xMg0.5xFe2O4 Ferrite: A Stable Catalyst for Reduction of 4‐Nitrophenol
Authors: Balgude Sagar , Patil Kundan , Moharil Shantanu , Puranik Mohit , Kadam Suresh , Lokhande Pradnya , Patange Sunil , More Paresh 
Published: May 2022

AbstractSpinel ferrites have recently received significant attention due to their high potential for environmental remediation. We herein report highly stable Cu−Mg substituted zinc ferrites, which were achieved for the first time using a sonochemical method. The phase purity and chemical composition of as‐synthesized ferrites were confirmed by using X‐ray diffraction (XRD) and X‐ray photoelectron spectroscopy (XPS). The size, shape, magnetic properties, and morphology of ferrites were characterized by using Transmission electron microscopes (TEM), Energy Dispersive X‐Ray Analysis (EDX), and Vibrating Sample Magnetometer (VSM). The catalytic performance of the synthesized ferrite was observed in the reduction of aqueous 4‐nitrophenol to 4‐aminophenol with NaBH4. The maximal reduction attained by the Zn1‐xCu0.5xMg0.5xFe2O4 nanoferrite (1.5 min) was significantly impactful than that of other ferrites. The rate constant for the reduction of 4‐nitrophenol was determined to be 0.502 min−1, which was higher than previously reported literature values, and the reduction followed pseudo first‐order kinetics. The cation distribution, crystallinity, and morphology of Zn1‐xCu0.5xMg0.5xFe2O4 were found to be responsible for its higher catalytic activity. Further, this research has the potential to be useful in environmental remediation and offers new findings on mixed ferrite.
Palladium Nanoparticles Stabilized by Lentinan with Enhanced Peroxidase‐like Activity for Sensitive Detection of H2O2
Authors: Li Ruyu , Dong Le , Liang Ying , Cui Yanshuai , Ji Xianbing , Xiao Haiyan , Gao Shoubei , Wang Longgang 
Published: May 2022

AbstractNatural enzymes are special proteins with excellent catalytic activity and selectivity. It is difficult to purify, store without losing the catalytic ability. Therefore, it is of great significance to study mimetic enzymes to realize the functions of natural enzymes and overcome their shortcoming. Herein, lentinan was used as a biological template to prepare palladium nanoparticles stabilized by lentinan (Pd‐LNT NPs), whose structure, activity and function were characterized. In addition, the 3,3′,5,5′‐tetramethylbenzidine (TMB) was oxidized by Pd‐LNT NPs in the presence of H2O2, which proved that they had good peroxidase‐like activity. The optimum reaction conditions were 30 °C and pH 4, the catalytic kinetic parameters were consistent with Michaelis‐Menten equation, and the good catalytic performance was verified. Furthermore, the colorimetric reaction based on the good peroxidase‐like activity of Pd‐LNT NPs was used for the convenient detection of H2O2. The linear range of colorimetric detection of H2O2 was 3.571‐107.143 μM, and it is worth noting that the detection limit was low to 4.714 μM. At last, Pd‐LNT NPs as biomimetic enzymes were used to detect the H2O2 released from HeLa cells, indicating they have great potential in the field of biological application.
Effects of Mn, Zr and Ni Promoters on the Performance of CuZnO Catalyst for Ethanol Synthesis via CO Hydrogenation
Authors: Gong Jie , Liu Jing , Wang Sen , Guo Guangkai , Fan Jinchuan , Huang Wei 
Published: May 2022

AbstractA series of CuZnO catalysts modified with Mn, Zr and Ni promoters were prepared by the complete liquid‐phase method. The performance of the modified catalysts for synthesis of ethanol from syngas was evaluated in slurry bed reactor. The results show that Mn and Zr can effectively improve the CO conversion and reduce the generation of hydrocarbons. Under the reaction conditions of 4 MPa and 280 °C, the ethanol selectivity reached 17.7 % in the 2 %Ni modified catalyst. The H2‐TPR characterization results showed that the presence of a large amount of highly dispersed Cu+ in the Mn and Zr‐promoted catalysts is conducive to the improvement of CO conversion. The XPS results showed that the addition of Ni was beneficial to the increase of surface oxygen vacancy content. It is speculated that the existence of oxygen vacancies is favorable to the insertion of CO molecules, and further conducive to the synthesis of ethanol.
Application of Nitric Acid Modified Multi‐Walled Carbon Nanotubes for Efficient Removal of Methylene Blue in Aqueous Solution
Authors: Yang Yue , Zhu Wenyu , Guan Chengli 
Published: May 2022

AbstractIn this work, multi‐walled carbon nanotubes (MWCNTs) was modified with nitric acid and applied as efficient adsorbents for the removal of methylene blue (MB) in aqueous solution. The morphologies of the modified MWCNTs were characterized by N2 adsorption‐desorption (BET), transmission electron microscope (TEM) and X‐ray photoelectron spectroscopy (XPS). Batch experiments were conducted systematically to explore the effects of various parameters including mass dosage of adsorbents, initial concentration of MB dye, pH of solution and ionic strength about the adsorption performance with modified MWCNTs. The adsorption for MB pollutants achieves the highest efficiency of 95.18 % occurring at about pH 11 when the adsorbent dosage is at 1.0 g L−1, the initial dye concentration is at 50 mg L−1 and the concentration of NaCl is 0 M. And the Langmuir, Freundlich and Temkin equilibrium isotherms were researched. The results revealed both the Freundlich and Langmuir isotherms fitted well to experimental data suggesting adsorption of MB onto MWCNTs as a result of a monolayer formation. In addition, the adsorption behavior of MB dye followed the pseudo second‐order kinetics indicating there was a synergistic effect in the adsorption process based on the factors of mass transfer resistance in the particles, the external liquid membrane diffusion, surface adsorption and internal diffusion of the particles.
Mixed Co‐Mn Spinel Oxides Based Electrocatalysts for Amperometric Determination of Hydrogen Peroxide
Authors: Li Tong , Xi Kaiyin , Jiang Peng‐Yang , Pan Qiu‐Ren , Feng Yunhui , Wu Huixiang 
Published: May 2022

AbstractHerein, we present an efficient non‐enzymatic electrochemical sensor for H2O2 detection based on the catalytic‐reduction of H2O2 on ZnMn0.5Co1.5O4. The ZnMn0.5Co1.5O4 derived from ZnCo2O4 by the partial substitution of Co with Mn was synthesized via sol‐gel combustion method. The catalytic performance of ZnMn0.5Co1.5O4 for the reduction of H2O2 is better than that of ZnCo2O4, attributing to the synergetic effects of electronic structure, lattice distortion, and multivalent state of Mn. Specifically, as‐fabricated ZnMn0.5Co1.5O4‐based electrochemical sensor shows an excellent quantitative detection capability toward H2O2 in a wide range of 5 to 7585 μM, with a theoretical detection limit of 0.12 μM (3S/N). Moreover, the excellent reproducibility and selectivity for H2O2 sensing was also verified. The excellent recoveries from 94.4 to 103.2 % were obtained for H2O2‐spiked orange juice and beer. More importantly, the sensor exhibits desirable performance in the real‐time monitoring of H2O2 released from living human colon cancer cell (HCT116 cells). The results indicate that the as‐presented sensor is a promising candidate for the H2O2 determination in food safety and clinical diagnose.
Fast‐Charging Electrolyte: A Multiple Additives Strategy with 1,3,2‐Dioxathiolane 2,2‐Dioxide and Lithium Difluorophosphate for Commercial Graphite/LiFePO4 Pouch Battery
Authors: Hu Yang , Zhang Zhenghua , Wang Hongmei 
Published: May 2022

AbstractSafe fast‐charging lithium‐ion batteries (LIBs) can be achieved by using LiFePO4 electrode and optimized electrolyte for the rapid development of electric vehicles. However, conventional carbonate electrolyte suffers resistive solid electrolyte interphase (SEI) that hampering the fast‐charging for LIBs. Herein, a multiple additive strategy, the combination of 1,3,2‐Dioxathiolane 2,2‐dioxide (DTD) and lithium difluorophosphate (DFP), is proposed to optimize the electrode interface for graphite (Gr)/LiFePO4(LFP) pouch cells under fast‐charging. Combining DTD with DFP can significantly reduce the charge transfer resistance of anode and greatly extend the lifespan of cells with >2400 cycles at a 2 C rate, which is much better than that of baseline and single additive based electrolytes with <1000 cycles. Further mechanistic studies revealed that proper sulfurized and phosphatized species are involved in the SEI film, which stabilizes lithium carbonate in the middle of SEI to avoid being attacked by Lewis acids. Multiple additive strategies optimize the interfacial structure and provide valuable guidance for the development of safe fast‐charging engineering.
Comprehensive Coverage on Anti‐mycobacterial Endeavour Reported in 2021
Authors: Dhameliya Tejas M. , Devani Aanal A. , Patel Krupa A. , Shah Kashvi C. 
Published: May 2022

AbstractTuberculosis (TB) has been the highly contagious airborne disease caused by Mycobacterium tuberculosis and the major leading infectious disease with the higher upsurge of morbidity and mortality. Owing to problems in the current regimen for TB and emergence of drug resistance strains, there is a strong necessity for development of new anti‐TB drugs with better efficacy, reduced duration of action, along with improved patient compliance. Towards this, the scaffolds reported in 2021 with anti‐tubercular activity such as benzofuran, benzothiazinone, benzimidazoles, indole, piperidine, piperazine, pyrazole, pyridine, pyrimidine, pyrrolidine, quinoxaline, triazole, etc. have been critically reviewed along with their structure‐activity relationships, mode of actions with anticipations of intuitions to design the newer anti‐mycobacterial scaffolds.
Determination of blood group antigens using electrophoresis of erythrocytes incubated with specific antibodies
Authors: Berest Volodimir Petrovich , Borikov Olexiy Yuriyovich , Kravchun Pavlo Grigorievich , Leontieva Frida Solomonivna , Dielievska Valentyna Yuriivna 
Published: May 2022

AbstractThere is a need for specific determination of blood group antigens on erythrocytes for improvement of the quality of hemotransfusion therapy. O, A, B, AB, and weak variants of A and B antigen (O washed erythrocytes with anti‐A or anti‐B antibody absorbing ability) were investigated for electrophoretic mobility with immunoglobulin G complement‐dependent antibodies. The contact of anti‐A heated serum and complement with A erythrocytes resulted in their decreased electrokinetic potential the contrary to the serum without anti‐A and anti‐B antibodies and increased after addition of the serum from O blood group person with anti‐A and anti‐B absorbing ability. Anti‐B heated serum with complement decreased electrokinetic potential of B erythrocytes. Whereas both anti‐A heated serum and serum from AB person with complement did not decrease the electrokinetic potential of O erythrocytes. Anti‐B heated serum, in the same manner, decreased the electrokinetic potential of O blood group erythrocytes with anti‐B absorbing ability. Anti‐А immunoglobulin G complement‐dependent antibodies decreased the electrokinetic potential of washed O erythrocytes with аnti‐A absorbing ability contrary to immunoglobulin M antibodies. Evaluation of the electrokinetic potential of erythrocytes with a set of immunoglobulin G complement‐dependent antibodies might be considered for blood group type detection.
Study of shear‐thickening and shear‐thinning behavior in rheology of self‐compacting concrete with micro‐nano bubble
Authors: Yahyaei Behnaz , Asadollahfardi Gholamreza , Salehi Amir Masoud , Esmaeili Negar 
Published: May 2022

AbstractThis research investigated the effect of using micro‐nano bubbles and superplasticizers on the rheology of self‐compacting concrete (SCC). Eight mix designs were made with different values of 4–5.5 kg/m3 of superplasticizer. For comparison, half of the mix designs were made with micro‐nano bubbles, and the rest were made with tap water. Flowability, passing ability, and rheological tests were performed on all mixed designs. The results show that an increased rate of superplasticizer from 4 to 5 kg/m3 improved flowability and passing ability in all specimens. The yield stress and plastic viscosity of SCC reduction were higher in samples made with micro‐nano bubbles. The shear‐thickening behavior was observed in SCC samples produced with tap water and the superplasticizer, and the c/μ (positive) ratio increased. While in SCC with micro‐nano bubbles, the shear‐thinning behavior was observed, and the c/μ (negative) ratio increased with increasing the superplasticizer dose.
Water‐ and air‐filled pore networks and transport parameters under drying and wetting processes
Authors: Hamamoto Shoichiro , Ohko Yushi , Ohtake Yutaka , Moldrup Per , Nishimura Taku 
Published: May 2022

AbstractThe connectivity and tortuosity of fluid‐filled pore networks in the water and air phases strongly influence the mass transport in porous media. Moisture conditions (water content and distribution) alter water‐ or air‐filled pore networks. In this study, using a sand column with variable saturated conditions, water‐ and air‐filled pore networks were analyzed using X‐ray computed tomography (CT). Water and air transport parameters, including hydraulic conductivity, gas diffusion coefficient, and air permeability, were measured. The objectives were (a) to identify the effects of entrapped air on the water‐filled pore network and hydraulic conductivity and (b) to understand the water‐ and air‐filled pore networks and relevant transport parameters in the sand column during the drying and wetting processes. Measurements of hydraulic conductivity using quasisaturated samples showed that hydraulic conductivity was drastically reduced when smaller in situ air bubbles were present inside the sand column. At the same air‐filled porosity, higher gas diffusivity and air permeability were obtained under wetting than those during drying. X‐ray CT image analysis revealed that the air‐filled pore network connectivity during wetting was higher than that during drying, resulting in enhanced gas transport parameters during the wetting process. The observed differences in water‐ and air‐filled pore networks during drying and wetting processes are highly promising for future multiphase mass transport models in soils.
Predicting wildfire induced changes to runoff: A review and synthesis of modeling approaches
Authors: Partington Daniel , Thyer Mark , Shanafield Margaret , McInerney David , Westra Seth , Maier Holger , Simmons Craig , Croke Barry , Jakeman Anthony John , Gupta Hoshin , Kavetski Dmitri 
Published: May 2022

AbstractWildfires elicit a diversity of hydrological changes, impacting processes that drive both water quantity and quality. As wildfires increase in frequency and severity, there is a need to assess the implications for the hydrological response. Wildfire‐related hydrological changes operate at three distinct timescales: the immediate fire aftermath, the recovery phase, and long‐term across multiple cycles of wildfire and regrowth. Different dominant processes operate at each timescale. Consequentially, models used to predict wildfire impacts need an explicit representation of different processes, depending on modeling objectives and wildfire impact timescale. We summarize existing data‐driven, conceptual, and physically based models used to assess wildfire impacts on runoff, identifying the dominant assumptions, process representations, timescales, and key limitations of each model type. Given the substantial observed and projected changes to wildfire regimes and associated hydrological impacts, it is likely that physically based models will become increasingly important. This is due to their capacity both to simulate simultaneous changes to multiple processes, and their use of physical and biological principles to support extrapolation beyond the historical record. Yet benefits of physically based models are moderated by their higher data requirements and lower computational speed. We argue that advances in predicting hydrological impacts from wildfire will come through combining these physically based models with new computationally faster conceptual and reduced‐order models. The aim is to combine the strengths and overcome weaknesses of the different model types, enabling simulations of critical water resources scenarios representing wildfire‐induced changes to runoff.This article is categorized under:
Water and Life > Conservation, Management, and Awareness
Science of Water > Hydrological Processes
Science of Water > Water and Environmental Change
Simulation of charging of PCM within a duct containing nanoparticles
Authors: Zhang Juan , Wang Fuzhang , Rothan Yahya Ali , Nofal Taher A. , Selim Mahmoud M. 
Published: May 2022

AbstractWith the involvement of sinusoidal containers of phase change material (PCM) inside the duct, new configuration for the ventilation system has been achieved in the current paper. Mixture of TiO2 and RT25 was assumed as PCM, and the temperature of domain is fixed at 25°C at the start of the process. Owing to the radiation of the sun, air becomes warmer up to 35°C and with entering the air into the domain with Re = 6000, the melting process starts. The cold air at the outlet section can be utilized for ventilating the room. Homogeneous model for NEPCM and K‐ɛ approach for turbulent air flow has been incorporated. ANSYS FLUENT was applied for simulating this unsteady mechanism, and verification of the model was done according to previous experimental work. To control the air gap among tanks, the factor “b” was utilized and the influence of the fraction of titanium oxide (ϕ) was analyzed in results. As nano‐sized material has been added, more heat can be received to RT25 and the completed process can be reached in lower time. With considering the highest “b,” as nano‐sized material, the required time reduces from 20,672 to 19705 s. When ϕ = 0, growth of b leads to a reduction of time of about 42.57%.
Diskurslinguistische framebezogene Analyse
Authors: Geursen Elisabeth 
Published: May 2022

ZusammenfassungIn Kapitel 5 werden die einzelnen Analyseschritte auf der Grundlage der praktischen Handlungsanweisungen für eine Diskursanalyse nach Konerding (2005, 2007) sowie die daraus abgeleiteten Analysekategorien mit den entsprechenden Ergebnissen aus der Korpusanalyse der Unternehmens- und Medientexte exemplarisch präsentiert. Unternehmens- und Medientexte bieten wichtige Diskursbeiträge, deren sprachliche Aushandlungen – explizit oder unterhalb der Textoberfläche – Begriffsbesetzungen des Untersuchungsthemas abbilden. Die Analyse stellt über die sprachlichen Phänomene des Nachhaltigkeitsbegriffs im Personalmanagement die thematische Entfaltung sowie die entsprechenden konzeptuellen Vorstellungen und Umsetzungsstrategien der am Diskurs beteiligten Akteure dar. Im Zusammenhang mit den Begriffskonzeptualisierungen wird methodengeleitet eruiert und systematisch aufgezeigt, welche Akteure bzw. Akteursgruppen in den Unternehmens- und Medientexten thematisch werden. Es wird dargestellt, wodurch sich ihr Handeln auszeichnet und welche akteursspezifischen Forderungen sich daraus für die zukünftige nachhaltige Entwicklung im Personalmanagement abzeichnen lassen, insbesondere hinsichtlich der praktischen Umsetzung von Handlungsempfehlungen. Dabei wurden 13.621 Kodierungen in den Unternehmenstexten und 9.183 Kodierungen in den Medientexten vorgenommen, was die Wichtigkeit des Nachhaltigkeitsthemas für die Unternehmen und Öffentlichkeit belegt. Die untersuchungsrelevanten Schwerpunktthemen Frauenförderung, Kampf um Talente und Führungsstil werden ausführlich beleuchtet und in Relation zum Matrixframe Zustand gesetzt.
Transfer matrices for AdS3/CFT2
Authors: Seibold Fiona K. , Sfondrini Alessandro 
Published: May 2022

Abstract
We work out the algebraic Bethe ansatz for the worldsheet theory of the AdS3× S3× T4 superstring, and use it to derive the transfer matrices for fundamental particles and bound states of the string and mirror model. We also show how the Bethe equations and transfer matrices are modified in the presence of an Abelian twist. These will be an important ingredient in the exploration of the mirror thermodynamic Bethe ansatz equations recently proposed by Frolov and Sfondrini, and their generalisation to twisted and deformed models.