bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Self‐Standing Flexible Gel Polymer Electrolyte for Dendrite‐Free Lithium‐Metal Batteries
Authors: George Sweta Mariam , Sampath S. , Bhattacharyya Aninda J. 
Published: September 2022

AbstractWe discuss here a self‐standing and flexible homogeneous amorphous gel polymer electrolyte (abbreviated as LiGPE) as an alternative electrolyte for lithium‐metal batteries. The LiGPE, comprises of a large volume of liquid lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) salt in tetra ethylene glycol dimethyl ether (TEGDME) electrolyte confined inside in situ synthesized network of acrylonitrile and acrylate, which is poly(ethylene glycol) methyl ether methacrylate or PEGMEMA. The glyme‐based liquid electrolyte in the LiGPE discussed here, which is completely devoid of ionic liquids, essentially plays the role of a plasticizer. The LiGPE exhibits high room temperature ionic conductivity (2.3 mS cm−1), high lithium‐transference number of approximately 0.6, good thermal stability (155 °C) and excellent electrochemical properties. At varying current densities, it facilitates a dendrite free plating and de‐plating of lithium across its interface for long periods of time. The high oxidative stability against lithium (Li) up to 5.3 V strongly suggests that it will provide a safer operating Li‐metal battery compared to conventional liquid electrolytes. The LiGPE, when assembled in Li‐metal cell comprising of Li‐metal anode and Li‐ion insertion cathode material (LiFePO4, LFP), demonstrated excellent stability and delivered 90 % of theoretical capacity when cycled over 100 cycles. We discuss here a self‐standing and flexible homogeneous amorphous gel polymer electrolyte (abbreviated as LiGPE) as an alternative electrolyte for lithium‐metal batteries. The gel shows superior interfacial properties with lithium (Li) metal, supressing dendritic growth and enhancing Li‐ion transference number (0.64). The high oxidative stability against Li up to 5.3 V strongly suggests that it will provide a safer operating Li‐metal battery. The LiGPE, comprises of a large volume of liquid lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) salt in tetra ethylene glycol dimethyl ether (TEGDME) electrolyte confined inside in‐situ synthesized network of acrylonitrile and acrylate, which is poly(ethylene glycol) methyl ether methacrylate or PEGMEMA. The glyme‐based liquid electrolyte in the LiGPE discussed here, which is completely devoid of ionic liquids, essentially plays the role of a plasticizer, enhancing the ionic conductivity (2.3 mS cm−1) without compromising with the mechanical stability or thermal stability (155 °C) of GPE.
Formative quizzes in the learning of sensors and transducers: Online vs. paper based
Authors: Gurkan Serkan , Cigdem Harun 
Published: September 2022

AbstractIn some previous research studies, quite successful results have been obtained in using online tools to increase students' academic achievement. In many fields; the benefits of online formative quizzes have been widely recognized by educators. However, there is little research determining whether weekly formative online exams affect students' academic achievement, especially in engineering courses. In this quasi‐experimental study, it was investigated whether the weekly quiz application method had an effect on students' academic achievement in an engineering course. One hundred and ninety sophomores participated in the study. Although the experimental group (n = 81) used the quizzes prepared on the Course Portal online to learn the Sensors and Transducers Unit, the control group (n = 109) solved the quizzes in the textbook on a paper‐pencil basis. After the online quizzes were solved, the experimental group was given which questions they answered incorrectly and the related video link of these incorrectly answered questions, and the relevant section of the book was given by the Course Portal as feedback. The pretest and posttest data of the students were obtained, and analysis of covariance was utilized as the analysis method to reveal the answer to the study question. The statistical analysis of the students' average achievement scores in the posttest (midterm exam) showed that the experimental group's average achievement score was significantly better than the control group. Results show that online weekly exams have significant effects on students' academic achievement. Weekly online quizzes are recommended to engineering lecturers as they offer students to improve their students' academic success.
Influencing the Product Distribution in Citral Hydrogenation Using Ionic Liquid Modified Cu Catalysts
Authors: Naicker Letisha , Schörner Markus , Kremitzl Daniel , Friedrich Holger B. , Haumann Marco , Wasserscheid Peter 
Published: September 2022

AbstractThis work shows the effect of selected ionic liquids on the catalytic performance of a Cu/Al2O3 catalyst towards citral hydrogenation. The Cu/Al2O3 was prepared using a combination of wet impregnation and strong electrostatic interaction technique. The catalyst was coated with three ionic liquids, namely: [C4C1Pyrr][OTf], [C2C1C1Im][NTf2], and [C2C1Im][NTf2] resulting in Cu‐based SCILL catalysts (solid catalyst with an ionic liquid layer). The fresh and used SCILL catalysts were characterized using FT‐IR spectroscopy and thermal gravimetric analysis. All Cu‐SCILL catalysts were stable throughout the liquid‐phase reactions with no leaching of ionic liquid being detectable by means of TGA. All ionic liquids investigated prevented the formation of undesired isopulegol compared to the 30 % isopulegol selectivity obtained over the bare Cu/Al2O3 catalyst. The Cu‐SCILL (coated with 15 wt% [C2C1Im][NTf2]) increased the selectivity towards geraniol and nerol by 340 %.
SMM Behaviour of the Butterfly {CrIII2DyIII2} Pivalate Complex and Magneto‐structurally Correlated Relaxation Thermal Barrier
Authors: Mecchia Ortiz Juan H. , Cabrosi Daiana , Carrella Luca M. , Rentschler Eva , Alborés Pablo 
Published: September 2022

AbstractWe are reporting the synthesis, single‐crystal X‐ray structure characterization, and magnetic property investigations of the pivalate butterfly {CrIII2LnIII2} complexes with Ln= Gd and Dy and the isostructural Y(III) sample. We found an anti‐ferromagnetic Cr(III)‐Ln(III) exchange interaction, which, as previously observed in related Cr(III)/Ln(III) systems, plays a key role in suppressing quantum tunnelling of magnetization and enhances the SMM performance in the Dy(III) complex. In fact, a pure Orbach relaxation mechanism, with absence of QT regime, is observed with a thermal barrier of 50 cm−1, leading to magnetization hysteresis opening, measured with a commercial magnetometer, up to 3.6 K with a coercive field of 2.9 T. Analysis of SMM behaviour in literature‐known butterfly {CrIII2DyIII2} complexes, reveals the existence of a magneto‐structural correlation between Ueff, the thermal barrier size, and the mean Cr−Dy bond distances. Moreover, a clear correlation is found for the thermal barrier magnitude and the maximum temperature hysteresis opening and coercive field.
Colloidal Stability of TiO2 Nanoparticles: The Roles of Phosphonate Ligand Length and Solution Temperature
Authors: Yamashita Shohei , Sudo Tatsuya , Kamiya Hidehiro , Okada Yohei 
Published: September 2022

AbstractInvited for the cover of this issue are Dr. Shohei Yamashita, Tatsuya Sudo, Prof. Dr. Hidehiro Kamiya, and Prof. Dr. Yohei Okada at Tokyo University of Agriculture and Technology. The image depicts the role of phosphonate ligand length in the colloidal stability of TiO2 nanoparticles. Read the full text of the article at 10.1002/chem.202201560.
Determination of chiral bioactive molecules in Justicia adhatoda leaves by GC–MS
Authors: Das Anuradha , Ghosh Shyamasree 
Published: September 2022

AbstractChiral compounds find importance as drugs and therapeutic targets. Enantiomers of chiral drugs have been found to show different biological properties like pharmacokinetics, toxicology, pharmacology, metabolism, and so forth. In this study, we have identified the chiral compounds present in the medicinal plant Adhatoda vasica Nees (Justicia adhatoda Linn). Phytochemical investigation on the leaves of Justicia adhatoda resulted in the identification of 27 chiral compounds. We report diverse compounds identified in the crude methanolic extract of Justicia adhatoda leaves by GC–MS analysis exhibiting diverse biological activities. Quantitative analysis of anticancer compound dihydroxycolchicine from the methanolic extract of J. adhatoda leaves was done by external standard method, and the amount of anticancer compound dihydroxycolchicine was found to be 87.823 mg/l indicative of moderate production in the leaves. Therefore, the extract of leaves of Justicia adhatoda can be used as a potential source of chiral bioactive molecules of pharmacological importance for drug synthesis.
Volles Programm für Nachhaltigkeit
Authors: Rübberdt Kathrin 
Published: September 2022

AbstractNach einem Online‐Intermezzo sind die Dechema‐ und ProcessNet‐Jahrestagungen zurück – diesmal international und aktuell wie selten. Unter dem Titel “(Bio)Process Engineering – a Key to Sustainable Development” treffen sich Verfahrenstechniker, Chemieingenieure und Biotechnologen vom 12. bis 15. September 2022 in Aachen.
Beurteilung und Retrofit von Bestandsanlagen
Authors: Saling Carlo 
Published: September 2022

AbstractZum Schutz von Personen, die in explosionsgefährdeten Bereichen arbeiten, stellen die ATEX‐Richtlinien grundlegende Explosionsschutz‐Anforderungen auf. Rembe als Spezialist für konstruktiven Explosionsschutz berät und macht aus Bestandsanlagen explsionssicher.
Betriebsreinigung in der Baustoffproduktion
Authors: Truderung Udo 
Published: September 2022

AbstractDie ETEX Building Performance die in Böhlen bei Leipzig ein Werk für die Gipskartonproduktion betreibt, hat mehrere mobile Sauger gegen eine zentrale Absauganlage ausgetauscht – und sieht in dieser Lösung deutliche Vorteile.
QR‐Codes für Tierfuttersäcke
Authors:   Antoinette Aufdermauer
Published: September 2022

AbstractFür unterschiedlichste Ansprüche bietet die Schaumann aus dem österreichischen Taufkirchen erstklassiges Tierfutter an. Damit im Stall nichts verwechselt werden kann, werden alle Futtersäcke noch vor der Befüllung mit zahlreichen Produktinformationen sowie ein‐ und zweidimensionalen Codes gekennzeichnet.
SCCR für Schaltanlagen in – Nordamerika
Authors: Busse Reiner 
Published: September 2022

AbstractDer National Electrical Code(NEC) schreibt die Dokumentation des möglichen Kurzschlussstroms am Aufstellungsort von Schaltschränken vor. Geprüfte Kombinationen aus Reihenklemmen und Leistungsschaltern vereinfachen den Einsatz von modernen Schutzgeräten und vermeiden teure Umbauten.
Multimode process monitoring strategy based on improved just‐in‐time‐learning associated with locality preserving projections
Authors: Guo Qingxiu , Xu Peng , Wang Honghai , Liu Jianchang 
Published: September 2022

AbstractIn this paper, a multimode process monitoring strategy based on improved just‐in‐time‐learning associated with locality preserving projections (IJITL‐LPP) is proposed. First, raw data are projected into the feature space using locality preserving projections (LPP). Second, IJITL searches for similar samples of the query sample in the feature space by introducing a variational inference Gaussian mixture model (VIGMM). Finally, the new statistic named average distance is created to complete process monitoring. In the IJITL, the introduced VI can automatically determine the number of modes, thereby accelerating the efficiency of selecting similar samples. In the process monitoring phase, the average distance can reduce the impact of different mode dispersion on fault detection. In addition, LPP can render the model less sensitive to outliers. Compared with principal component analysis (PCA), LPP, K nearest neighbour rules, Gaussian mixture model (GMM), K‐means based‐PCA, and just‐in‐time‐learning (JITL)‐based LPP, the proposed method has better performance in a numerical case, the Tennessee Eastman process, and the semiconductor etching process.
Population Pharmacokinetics of Oral Brepocitinib in Healthy Volunteers and Patients
Authors: Hughes Jim H. , Qiu Ruolun , Banfield Christopher , Dowty Martin E. , Nicholas Timothy 
Published: September 2022

AbstractBrepocitinib is a tyrosine kinase 2 and Janus kinase 1 inhibitor in development for treatment of inflammatory autoimmune diseases. This analysis aimed to add to the pharmacokinetic knowledge of the medication, through development of a population pharmacokinetic model and identification of factors that affect drug disposition. Plasma samples from 5 clinical trials were collated, composed of healthy volunteers, patients with psoriasis and patients with alopecia areata taking oral brepocitinib. NONMEM was used to develop a population pharmacokinetic model, and patient demographics were tested as covariates. The final model was a 1‐compartment model with first‐order absorption. The typical values for apparent clearance and apparent volume of distribution were 18.7 L/h (78% coefficient of variation [CV]) and 136 L (60.5% CV), respectively. Absorption was rapid with an absorption constant of 3.46 h, with an absorption lag of 0.24 hours observed with the oral tablet formulation. The proportional residual error was found to be 52.7% CV in healthy volunteers and 87.5% CV in patients. High‐fat meals were associated with a reduction in both the rate (69.9% lower) and extent (28.3% lower) of absorption, while Asian populations had reduced clearance (24.3% lower). Nonlinear pharmacokinetics were observed at doses of 175 mg and above, with a 35.1% higher relative bioavailability at these doses. There were insufficient data to describe this nonlinearity as a continuous relationship. This initial description of the population pharmacokinetics will act as a foundation for the model‐informed drug development of brepocitinib and will facilitate future modeling of this medicine. ClinicalTrials.gov numbers NCT02310750 NCT03236493 NCT03656952 NCT02969018 NCT02974868.
A modified graywolf‐basedchameleon swarm algorithm for minimizing energy consumption and enabling secure communication in wireless sensor network
Authors: Anitha S. , Saravanan S. , Chandrasekar A. 
Published: September 2022

SummaryThe efficiency and security of WSNs are improved by designing multiple lightweight cryptographic techniques and a 6LoWPAN protocol, depending on resource utilization and a reasonable amount of energy. This is still caused by constraints such as power resource management, authentication, key management, and flexibility protocols. To address these challenges, a novel approach called the modified gray wolf‐based chameleon swarm (MGW‐CS) algorithm is presented to select the cluster heads from WSN nodes. The MGW‐CS algorithm is an amalgamation of both improved gray wolf optimizer and chameleon swarm algorithm. During cluster head selection, the QoS parameters such as network lifetime, energy efficiency, and throughput and packet delivery ratio are improved and optimized. By presenting a lightweight and flexible cryptographic model to manage encryption complexities, the encryption parameters are automatically selected based on the currently available resources of each sensor node for data encryption. Among various WSN nodes, data exchanging and secure communication are established with the development of novel authentication and a lightweight key management model. The proposed model is implemented using the NS‐2 software. The proposed methodology offers a packet delivery rate of 98.6% for a total of 500 nodes when compared to the different state‐of‐art techniques.
Low‐Temperature Preparation of High‐Quality Perovskite Polycrystalline Films via Crystallization Kinetics Engineering
Authors: Sun Yang , Wang Xinli , Wang Xinyue , Gao Jie , Wang Yi , Ai Xi‐Cheng , Zhang Jian‐Ping 
Published: September 2022

AbstractPreparation of lead halide perovskite polycrystalline films at a low annealing temperature is highly restricted by their intrinsically large crystallization activation energy, which hinders the conversion of the precursors/intermediates to perovskites and yields as‐prepared polycrystals with tiny grain sizes and terrible crystal quality. Herein, we demonstrate through in‐situ, real‐time spectroscopic studies that both the nucleation and crystal growth kinetics can be improved without the need for a high annealing temperature by treating the film with thiourea, as accounted for by the reduced activation energy. As a consequence, the thiourea‐treated perovskite polycrystalline film exhibits larger grain sizes and greater crystallinity than the untreated one. More importantly, owing to the synergistic effect of the promoted crystallization kinetics and the passivation of surface defects, the low‐temperature prepared films treated with thiourea even present more prominent photophysical properties than those fabricated by using the conventional high‐temperature method. The strategy of crystallization kinetics engineering proposed in this work paves the way for fabricating high‐quality perovskite polycrystalline films in a low‐temperature manner.
Operation of a Dc/3ϕ power converter using a single‐delta bridge‐cell converter under low magnetizing inductance
Authors: Okumura Kento , Hagiwara Makoto 
Published: September 2022

AbstractA single‐delta bridge‐cell converter (hereinafter referred to as an SDBC converter) is a prospective power converter for a static synchronous compensator (STATCOM). The authors have proposed a dc/3ϕ power converter using the SDBC converter and a medium‐frequency single‐phase transformer with an operating frequency of 150 Hz; this converter can exchange a maximum active power of 37% of the rated reactive power with three‐phase ac mains supply without increasing the voltage and current ratings of the SDBC converter. In particular, the negative‐sequence reactive power control is a challenging task because of the high magnetizing inductance of the transformer. To achieve the negative‐sequence reactive power control, a single‐phase transformer with low magnetizing inductance is applied to the converter at the expense of the exchangeable active and reactive power. The relationship of the magnetizing inductance, active power, and reactive power is revealed in this paper, and the operation of the converter under low magnetizing inductance is experimentally verified by employing a downscaled 110‐V, 7‐kVA model.
Cardiac sarcoidosis completely mimicking biventricular arrhythmogenic cardiomyopathy
Authors: Vereckei András , Katona Gábor , Révész Katalin , Vágó Hajnalka , Müller Veronika , Nagy Beáta , Nagy Péter , Sepp Róbert , Suvarna Kim 
Published: September 2022

AbstractCardiac sarcoidosis (CS) is a chameleon of cardiology, and it can mimic different cardiac diseases; among them is arrhythmogenic cardiomyopathy (ACM). We admitted a 70‐year‐old female patient with heart failure symptoms in 2015, who fulfilled all major ECG and non‐invasive imaging criteria of biventricular ACM. She was well with the recommended medications for 3 years, showing only isolated cardiac involvement, but in 2018, cervical and mediastinal lymphadenopathy appeared and cervical lymph node core biopsy histology, bronchoalveolar lavage flow cytometry strongly suggested extracardiac sarcoidosis. Therefore, our suspicion was that sarcoidosis is responsible for the cardiac involvement, which was not confirmed by PET‐CT and gallium scintigraphy examinations. At the end of 2018, she died in septicaemia with multiorgan failure, and only autopsy verified her CS. A new ECG algorithm published in 2021 for the differential diagnosis of CS and biventricular ACM, when applied on her ECGs recorded in 2015, suggested the diagnosis of CS.
Electrochemical Behavior and Ultrasensitive, Simple and Effective Voltammetric Determination of Acetaminophen Using Modified Glassy Carbon Electrode Based on 4‐Hydroxyquinoline‐3‐carboxylic Acid
Authors: Uzun Demet , Tabanlıgil Calam Tuğba 
Published: September 2022

AbstractAn electrochemical oxidation of acetaminophen (ACOP) has been successfully performed by using glassy carbon electrode covered with 4‐hydroxyquinoline‐3‐carboxylic acid (4HQ3CA) to reinforce electrode's feature. To characterize the modified electrode (4HQ3CA/GC), electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV) and Fourier transform infrared spectroscopy (FT‐IR) techniques were used. The finding optimum conditions (supporting electrolyte, pH) and the electrochemical determination studies were performed with differential pulse voltammetry (DPV). It was decided that the supporting electrolyte medium suitable for ACOP determination was Britton‐Robinson (BR) buffer and the effect of pH change on the oxidation peak of ACOP in this media was investigated. The effect of changing scan rate on the oxidation peak of ACOP was examined and this study showed that the oxidation process of ACOP on the 4HQ3CA/GC modified electrode surface was diffusion and adsorption controlled process. A wide concentration range from 0.0025 μM to 141 μM with a limit of detection (LOD) of 5.98×10−10 M (3 s/m) was obtained. This prepared sensor was carried out for the determination of ACOP in pharmaceutical sample.
An experimental and numerical investigation into using hydropower plant on oil transmission lines
Authors: Ansari Behrooz , Aligholami Meisam , Rostamzadeh Khosroshahi Alireza 
Published: September 2022

AbstractReplacing control valves in the inlet lines of oil transmission stations with hydropower plants can be a logical solution to convert energy losses into useful power. In this regard, this paper carried out an experimental and numerical investigation to study the feasibility of applying a pump as turbine in a hydropower system and its performance on the oil transmission lines. An experimental platform, comprising a tank, hydropower, centrifugal pump, electromotor, and measuring instruments, was constructed. An external gear pump was employed regarding the high working pressure of the system, maximally 80 bar, as an actuator of the centrifugal pump. By comparing the efficiency of the electropump with the hydropower‐driven pump, it was observed that maximum efficiency, approximately 20.6%, occurred when the pump reached its best efficiency point. Furthermore, based on experiments on hydropower‐driven pump under different inlet pressures, an optimal point was observed for the system. This issue enhanced the system's efficiency by 19% as the flow rate increased by 1.9 L/s in the inlet pressure of 80 bar. According to the results, as the flow rate increases, there is a descending trend in outlet pressure. Besides this, there is an optimum condition for the maximum efficiency of hydropower plants and this crucial point should be determined by experimental or numerical studies to reach maximum performance. Furthermore, extracted values of power from the computational fluid dynamics model were compared with the experiments with less than 8% error in most cases. Therefore, a correlation was introduced for the prediction of power based on effective parameters of outlet pressure and volumetric flow rate for the off‐design condition in each inlet pressure with roughly 2% error.