bluuebunny/crossref_metadata_2025_split huggingface dataset:
A feasible way to modify microcrystalline cellulose powder and its reinforcing effect for NBR composites
Authors: Yang Shuyan , Che Ronghui , Chen Jiaping , He Zhixiang , Lai Tongxing , Liang Yangfan , Bian Xiaofei 
Published: January 2024

AbstractIt has attracted tremendous attention for replacing petroleum‐based carbon black or mineral fillers with renewable, biology‐based and low‐cost cellulose. However, the reinforcing effect of cellulose, especially at the microscale, is still a great challenge in the polymer industry. In this work, a feasible surface modification method for microcrystalline cellulose powder (MCC) in all solid states is proposed by using rubber accelerators N‐cyclohexyl benzothiazole‐2‐sulphenamidee (CBS) and 2,2′‐dibenzothiazoledisulfide (DM). These accelerators not only accelerate the sulfur crosslink of nitrile butadiene rubber (NBR), but also graft to rubber molecular chains and form hydrogen bonds with MCC, resulting in good interfacial interaction and good dispersion of MCC in the NBR matrix. As a consequence, the tensile strength and elongation at break of NBR/10MCC reach up to 20.12 MPa and 511%, respectively, which are the highest values of NBR/MCC or cellulose nanocrystals (CNCs) composites we can find in the world and are comparable to those of carbon black or mineral fillers. This provides a more effective and environmentally friendly way of using MCC or CNCs in the polymer industry.Highlights
Microcrystalline cellulose powder can reinforce NBR.
Hydrogen bonds have been established between accelerators and MCC.
The tensile strength of NBR/10MCC composite reaches 20 MPa.
The reinforcing mechanism is ascribed to the immobilized rubber layer.
Preterm membranes are mechanically more resistant than term membranes
Authors: Vergote Simen , Robmann Serjosha , Van Der Merwe Johannes , Richter Jute , Deprest Jan , Mazza Edoardo 
Published: January 2024

AbstractObjectiveTo compare the biomechanical properties of fetal preterm membranes (20 + 0 weeks to 30 + 0 weeks) to those of the term (37 + 0 to 41 + 0 weeks).MethodAmnion and chorion were manually separated and samples were cut to the required geometry. Rectangular samples with (mode 1) and without (uniaxial) a notch, were tested for tearing energy, critical elongation, and tangent stiffness. Suture retention and inter‐suture distance testing investigated the effect of suture placement.ResultsFrom the 15 preterm and 10 term placentas studied, no notable differences were observed in uniaxial testing. Mode 1 fracture testing showed a difference in tearing energy between the preterm and term chorion (0.025 ± 0.005 vs. 0.017 ± 0.005 J/m−1; p = 0.027) but not in the amnion (0.030 ± 0.017 vs. 0.029 ± 0.009 J/m−1; p = 0.895). Both preterm amnion and chorion showed a higher critical elongation compared with term (1.229 ± 0.057 vs. 1.166 ± 0.046; p = 0.019 and 1.307 ± 0.049 vs. 1.218 ± 0.058; p = 0.012). Preterm amnion had a higher suture retention strength than its term counterpart (0.189 ± 0.065 vs. 0.121 ± 0.031 N; p = 0.023). In inter‐suture distance tests, no significant interaction was observed beyond 3 mm, but the preterm chorion showed less interaction at 1–2 mm distances.ConclusionPreterm membranes have equivalent or superior tensile properties to term membranes. The chorion appears to contribute to the mechanical integrity of fetal membranes, particularly in preterm stages.
Mikroskopieren ohne Mikroskop
Authors: Korn‐Müller Andreas 
Published: January 2024

ZusammenfassungMit einem handelsüblichen, leistungsstarken Laserpointer und einer Kunststoffspritze kann man Mikroorganismen und Zellen ohne ein Mikroskop als Schatten sichtbar machen. Dazu wird der Laserstrahl durch einen an der Spritze hängenden Wassertropfen geschickt, der Zellen oder Plankton enthält. Aufgrund der sphärischen Oberfläche des Tropfens kommt es zu einem Vergrößerungseffekt. Mit Hilfe dieser einfachen „Laser‐Tropfen‐Methode“ ist man in der Lage, in jedem verdunkelbaren Raum oder Klassenzimmer Mundschleimhautzellen, Blutzellen und Mikroorganismen, wie Grünalgen oder Ruderfußkrebse, abzubilden.
Adaptive thresholds‐based leak detection using real‐time transient modeling of two‐phase flows
Authors: Vandrangi Seshu Kumar , Lemma Tamiru Alemu , Muhammad Mujtaba Syed 
Published: January 2024

AbstractPipelines are widely regarded as the most cost‐effective mode of transportation for oil and gas, particularly when it comes to covering long distances. Regrettably, pipelines are not impervious to accidents, which can result in colossal material damage and fatalities. As the demand for oil and gas rises, so does the need for pipelines. Therefore, issues in pipeline malfunctions cannot be overlooked. Leakage and blockage are the two main faults in pipelines that lead to pipeline incidents if not addressed timely. Detecting pipeline leaks is a major hurdle for industry, and various techniques have been developed to tackle this. This article focuses on the modeling of leakage detection in pipelines in two‐phase transient flows. Initially, OLGA, a multiphase software, is used for simulating the transient flows in a black oil case study. A leak was induced after 30 min of the simulation and leak cases were designed with varying parameters. Using the simulated data of mass flow rate, and pressure at the inlets and outlets, the model will be identified. The adaptive thresholds‐based model was able to predict the leaks accurately. The performance of the leak detection model was analyzed. The model was able to detect leaks of 2%–10% sizes successfully.
An adaptive dynamic programming method for observer‐based sliding mode control of connected vehicles subject to deception attacks
Authors: Xu Yangguang , Guo Ge , Yu Shuanghe 
Published: January 2024

AbstractThis article investigates the problem of optimal observer‐based sliding mode control (SMC) of connected vehicles subject to deception attacks and disturbances with adaptive dynamic programming (ADP) method. For a group of vehicles with unknown nonlinear dynamics term and disturbance, this article aims to give a control methodology to achieve secure tracking of the desired spacing, velocity and acceleration. A neural network (NN) and an observer are constructed to estimate the unknown nonlinear term and the states, respectively. Then, a SMC scheme incorporating NN approximation is developed and an off‐policy ADP method is used to implement the optimal control of sliding mode dynamics. The proposed method can ensure individual stability and string stability of the set of vehicles. Numerical simulations are conducted to demonstrate the validity of the proposed controller.
Saturated H∞ control of networked systems under stochastic transmission delays: The random sampling periods case
Authors: Chen Kai , Song Haiyu , Hu Zhipei , Deng Feiqi 
Published: January 2024

AbstractIn this paper, the saturated control problems of networked systems with random sampling periods and stochastic transmission delays are investigated. The main issue is to design an saturated controller such that the controlled close‐loop system is exponentially mean‐square stable with a desired performance. A matrix exponential which is different from some existing literature is used to reconstruct the discrete‐time stochastic system to an equivalent yet tractable augmented model without any additional conditional constraint. In virtue of reduced‐order confluent Vandermonde matrix approach and Kronecker product operation, the stability condition in terms of linear matrix inequality is derived and then the desired saturated controller is designed. It should be emphasized that the improved method can also be used for the stability analysis and controller design when the system matrix contains complex roots. Finally, two numerical examples and a three‐axis milling machine system are utilized to manifest the reliability and practicality of the designed strategy.
Tip position control of flexible single‐link manipulators in the frequency domain without model reduction
Authors: Mohsenipour Reza , Liu Guangjun 
Published: January 2024

AbstractThis article develops the fundamentals of the tip position control of flexible single‐link robotic manipulators in the frequency domain without approximating the model. Analytic transfer functions of the hub angle and tip position are derived without any model order reduction. Conditions for the stability of the transfer functions are presented by considering the payload mass change as an uncertain parameter. Using the D‐decomposition method, a simple procedure is introduced to design an output feedback controller which guarantees the stability and a desired tracking performance. The introduced design method leads to less conservatism comparing with design methods established upon model reduction. The controller structure includes two proportional‐derivative and integral loops and needs only two measurements of joint angle and tip position which are easily implementable. A numerical example is provided to demonstrate the merit of the achieved results.
An interplay of the consumption values and green behavior in developed markets: A sustainable development viewpoint
Authors: Chwialkowska Agnieszka , Bhatti Waheed Akbar , Bujac Andreea , Abid Sidra 
Published: January 2024

AbstractGreen products result from innovations aimed at designing products that cause less environmental harm, but they often come at a higher cost or are perceived as less effective. Therefore, there is a need to highlight the consumption values that trigger green product purchases. In our study, we conceptualize the consumer values, including social, conditional, and knowledge value, and investigate their effect on the green product purchase behavior among consumers in two developed countries. Our main contribution is that aside from looking at the direct impact of consumption values on purchasing behavior, we examine the mediating role of contextual factors that may strengthen or weaken this relationship. We consider the mediators such as environmental and health concerns, functional value, and social pressures. We compare how the mechanism underlying the interaction between consumption and green choices differs in masculine (USA) and feminine (Finland) countries. Our findings underscore the importance of integrating social and knowledge values into marketing strategies to foster green product adoption. Businesses should leverage advertising themes that resonate with customers' desire for social belonging and self‐improvement.
Powering a sustainable future: Does economic structure influence the ecological footprint?
Authors: Sahoo Malayaranjan , Kaushik Shreyasee , Gupta Mohini , Islam Muhummad Khairul , Nayak Priyanka 
Published: January 2024

AbstractTo achieve sustainable development goal (SDG) 7 the world needs a lot of catching up. India has been at the forefront of renewable and clean energy missions and its ecological footprint of 0.8 global hectares fares quite well vis‐à‐vis the world average. This study, spanning from 1990 to 2021, investigates the impact of structural changes, technological innovation, and renewable energy adoption on India's ecological footprint, utilizing a novel dynamic Autoregressive Distributed Lag (ARDL) simulation for both short and long‐term analysis. We find that agriculture exerts a significant increase in the ecological footprint, both in the long run and the short run. Similarly, industry value added has a positive and statistically related to the ecological footprint. However, the result of the service sector indicates negative influence on ecological footprint in the long run, but a positive and significant relation with ecological footprint in the short run. Technological innovation has shown a favorable effect on the environment by reducing ecological footprint. Renewable energy consumption has also enhanced environmental quality by reducing ecological footprint in both short run and long run. To reach SDG 7 goals and lower India's ecological footprint, policy implications include promoting renewable energy, sustainable practices in agriculture and industry, and encouraging technological innovation.
Preventing Agglomeration and Enhancing the Energetic Performance of Fine Ammonium Perchlorate through Surface Modification with Hydrophobic Reduced Graphene Oxide
Authors: Akbi Hamdane , Mekki Ahmed , Rafai Souleymen , Boulkadid Moulai Karim , Touidjine Sabri , Belgacemi Raouf , Chabane Houssem , Bekkar Djeloul Sayeh Zakaria 
Published: January 2024

AbstractThe combustion rate of energetic composite propellants (ECPs) is adversely affected by the agglomeration of fine ammonium perchlorate (AP), which is the most commonly used oxidizer. To address this issue, this study explores the use of hydrophobic reduced graphene oxide (R‐GO) for surface modification of fine AP particles. An intermittent spray coating technique was used to coat the fine AP particles with graphene oxide (GO) dispersion. Hydrophilic GO was transformed into hydrophobic R‐GO by gentle thermal annealing. Fine AP was then scrutinized for changes in hygroscopicity and thermal decomposition behavior before and after coating with R‐GO. The findings demonstrate that surface modification significantly reduces the hygroscopicity of fine AP, reducing the moisture adsorption rate from 0.28 % to 0.11 % after a 10‐day exposure to ambient humidity. Moreover, this surface modification markedly enhances its energetic performance, doubling the energy release from 717.5 to 1413.5 J ⋅ g−1 when incorporating a 0.3 % mass of R‐GO coating. This study suggests that surface modification of fine AP with R‐GO is a promising strategy for addressing its agglomeration issue and improving its performance in ECPs.
Rhodamine B Amide Derivatives with Anticancer Activity and Fluorescence Properties for Potential Theranostic Applications
Authors: Battula Himabindu , Reddy Bollareddy Srivarsha , Vamsi Krishna Venuganti Venkata , Jayanty Subbalakshmi 
Published: January 2024

AbstractRhodamine B (RHB) based derivatives are especially known for their dye characteristics. Nevertheless, very limited of such revealed promising in‐vivo and in‐vitro therapeutic potency; besides demonstrating great interest due to their excellent photophysical and structural proficiency. Therefore, novel RHB derivatives with significant biological activity are requisite. Hence, current work presents the contemporary design aspect, synthesis, characterization, and anticancer activity of five new RHB amides attained by reacting RHB specifically with simple small amines being side chains of existing anticancer drugs. Therefore, this strategy resulted in a dual effect i. e. fluorescence property and considerable anticancer activity among achieved RHB amides. Obtained fluorophores exhibited emission wavelength at ∼560 nm, a fluorescence quantum yield Φf=10 to 40 % in aqueous solutions, and showed operational stability in pH 4–10, conditions. Further, a study for in‐vitro cell‐based experiments was carried out, wherein AGS (Human gastric cancer) and B16F10 (Murine melanoma) cells were used to screen the compounds. Hydroxy phenyl piperazine substituted RHB amide showed greater growth inhibition than other compounds with an IC50 value of 1.18 μM and 9.07 μM in AGS and B16F10 cells. Fluorescence imaging was performed for the compounds in AGS cells with DAPI as the counterstain using confocal laser microscopy.
Plasma‐treated Ni‐Al‐O Catalysts with Variable Physicochemical Properties for the Oxidative Dehydrogenation of Ethane
Authors: Li Dong , Xie Zean , Zhao Jin , Bi Jingying , Chen Yanjun , Kong Lian , Zhao Zhen 
Published: January 2024

AbstractNi‐M‐O catalysts have demonstrated superior performance in the oxidative dehydrogenation of ethane (ODHE), but precise control over the content of active oxygen species is necessary to achieve optimal C2H4 selectivity. In this work, highly efficient Ni‐Al‐O catalysts were prepared by a plasma‐assisted strategy, and their catalytic properties were evaluated for ODHE reaction. Characterization results revealed that the working atmospheres (O2, H2 and Ar) can not only change the crystallite size of NiO, but also modulate the reduction properties of Ni‐Al‐O catalysts and the distribution of active oxygen species. Consequently, Ar and O2 plasma pretreatment increased the ODHE performance by increasing active surface oxygen, while H2 plasma‐treated catalyst showed a decrease in the catalytic performance compared to the original Ni‐Al‐O catalyst. Among them, O2‐Ni‐Al‐O exhibited 50.8 % ethane conversion and 70.3 % ethylene selectivity at 500 °C. It was accepted that the change in the ratio of defective oxygen to lattice oxygen (OV/OL) was the internal reason to illustrate its excellent performance. For series Ni‐Al‐O catalysts, C2H6 conversion increased linearly while C2H4 selectivity decreased with an increase in OV/OL value.
Lab‐on‐Paper Approach in lieu of Microfluidic Paper Assisted Platform: ‘ASSURED’ sensing through Modified Graphene Quantum Dots
Authors: Agrawal Neha , Baghel Doli , Prasad Dipti N. , Kohli Ekta 
Published: January 2024

AbstractMicrofluidic based sensors are one of the emerging alternatives for bringing solutions studies on paper platforms. Microfluidic paper assisted platform was developed over here through a simple, easy, cost effective and instrument free process. The self‐same method of waxing through crayoning, was estimated thoroughly on different paper platforms. Varied parameter including type of crayoning, way of patterning, color effect, wicking rate and channel optimization was performed on paper milieus. Optimized time of baking for obtaining controlled penetration ranges from 2 min to 8 min depending on the type of paper used. Wax crayoning was preferred over oil pasteling for making hydrophobic barriers uniformly, solid as well fully penetrated within paper inner layers. Fabrication through this easy cost‐effective route allows a formation of hydrophilic reaction or sensing zone of 0.25 cm2 with sufficient reactive area. Further sensing of dopamine on paper platform was carried using paper chip adsorbed with fluorescent modified graphene quantum dots as sensing material. The patterned paper showed advantage as only few microliter (5 μl to 10 μl) range of sample volume was required for testing. Fluorescence quenching with increase of concentration was witnessed where around 25–75 μM dopamine concentration was positively tested through naked eye; which for the first time was demonstrated here via robust wax crayoning method for developing paper based biosensor.
Use of Mechanochemical Methodology to Explore the Formation of a New Crystalline Phase in the Curcumin‐Quercetin System
Authors: D'Vries Richard F. , Pastrana‐Dávila Andrea , Pantoja Kriss Dayana , Ellena Javier , Santiago Pedro H. O. , Gomez Germán E. , Fernández‐Baldo Martín A. 
Published: January 2024

AbstractThis study addressed the formation of co‐crystals from Quercetin and Curcumin by mechanochemical treatment employing ball mill grinding. The binary system was initially studied using molecular complementarity and hydrogen bond propensity analysis structural tools available in Mercury software. This study was performed from CCDC reported structural data for Curcumin and Quercetin dihydrate used as starting reagents. Reaction conditions, such as Quercetin: Curcumin molar ratio, grinding time, and solvent‐assisted variables, were optimised to synthesise a new solid phase from the binary system. The synthesised product was characterised by differential scanning calorimetry, thermogravimetric analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, and powder X‐ray diffraction techniques. Finally, to compare the anti‐oxidant capacities from the pure components, eutectic mixtures previously reported and the new crystalline phase was evaluated in vitro using the 1,1‐diphenyl‐2‐pycril‐hydrazylhydrate radical inhibition method. The co‐crystal phase and eutectic mixtures present higher anti‐oxidant activity with values around 5.0 mg/L compared to pure Quercetin (3,444 mg/L) and Curcumin (9,141 mg/L), using only half of the molecules. These results indicate Quercetin molecule is synergically active with the Curcumin molecule in the binary mixtures.
Discriminative detection of glucose and urea with a composite polymer nanofiber based matrix
Authors: Apetrei Roxana‐Mihaela , Guven Nese , Camurlu Pinar 
Published: January 2024

AbstractDetection and quantification of glucose and urea are fundamental in medical analysis, real‐time monitoring, and point of care analysis. However, such analyses generally require sophisticated instrumentation and specialized personnel. Furthermore, discriminative detection of multiple analytes is often necessary for treatment and diagnosis. To address this challenge, this study describes a proof‐of‐concept for discriminative sensitive amperometric detection of both analytes. This was achieved by the fabrication of a polymer‐MWCNTs composite nanofiber matrix upon which glucose oxidase (GOD) and urease were co‐immobilized to allow detection of the corresponding substrates (glucose and urea). The (PAN(−MWCNTs)/Urease‐GOD) biosensor showed good performance in: (i) glucose biosensing with sensitivity of 31±5 μAmM−2cm−2 within an extended linear range (0.1–5.0 mM) and a limit of detection of 3.7 μM, and (ii) urea detection at very low concentration (4–30 and 30–90 μM) with sensitivity up to 350±19 μAmM−2cm−2 and very low LOD (0.1 μM). The analogous mono‐enzyme platform for urea detection (PAN(−MWCNTs)/Urease) showed very similar performance as the bi‐enzyme sensor, suggesting little to no influence of co‐immobilization on Urease activity, thus confirming that the two catalytic processes are independent of each other. The biosensors exhibited high accuracy in the detection of both analytes (at normal and pathological levels) in human serum, thus proving that the biosensor described herein can have practical applications in healthcare and remote patient monitoring.
Key Materials in Solder Mask Ink for Printed Circuit Board
Authors: Zhou Haihua , Song Yanlin 
Published: January 2024

AbstractSolder mask ink (SMI) layer can avoid the short circuit between electronic component and land for the fabrication of printed circuit board (PCB). More importantly, the layer not only protects the board from the corrosion of moisture, mildew, or salt spray but also reduces the contamination of weld, and increases the degree of insulation by forming stable three‐dimensional net structure. Therefore, the SMI plays a decisive role for the service life of PCB. This review mainly summarizes three types of SMI including epoxy resin ink, acrylic acid resin ink, and phenolic resin ink for PCB. The focus is the effect of the changes of key materials, such as the design of the binder resin, the selection of the curable agent, and the variation of the colorant and initiator on the performances of epoxy resin SMI layer. Then other types of ink such as acrylic acid resin ink and phenolic resin ink have been discussed, especially about how the change of the binder resin influences the SMI film properties. At last, the development trend of the SMI is proposed. The review has significant meaning for the development and improvement of the SMI and the investigation is important for the application and exploitability of the high‐quality PCBs.