bluuebunny/crossref_metadata_2025 huggingface dataset:
The Impact of Intercultural Communication on Cultural Intelligence
Authors: Ruxandra Nicoleta POPESCU
Published: June 2023

Multicultural relations have become a characteristic feature of global economic and social reality. The ever-increasing mobility of the workforce has led to a significant growth in its organisational heterogeneity. Understanding the climate induced by the ethnic diversity of the workforce and the way that performance can be improved at organisational level, have become management priorities in a multicultural environment as these elements are indicators of success. This study aims to highlight the relationships between the level of intercultural communication (IC) and cultural intelligence (CQ) at the individual level. The sociological survey, based on a questionnaire, was the basic element in obtaining primary information. The questionnaire was administered to a sample of 367 people working in multinational companies in Romania. The results were processed by econometric methods using SPSS software. The study highlights the direct and positive links between levels of intercultural communication (IC) and cultural intelligence (CQ) at the individual level. The results of the study are only valid at the national level. In order to increase the relevance of the results, we consider it necessary to extend the sample by including more people. By conducting this study, we highlight the importance of having a high level of IC, a level that induces a significant increase in CQ value at the individual level, and also a high willingness to perform in a multicultural organisation. This study is a first at the national level because the links between IC and CQ levels have not been the subject of an experimental analysis before.
Holiday Culture in Modern Conditions: Main Vectors of Development
Authors: Stozhko D. K. , Stozhko K. P.
Published: June 2023

In the context of the emerging new geopolitical and socio-economic reality, a serious transformation of culture and its values is taking place. One of these values is the phenomenon of the holiday. Firstly, the holiday is an important recreational factor in people's lives and, secondly, it acts as a translator of tradition from one generation to another. The article is devoted to investigating the issues of the essence and role of the holiday in the life of an individual and society. The holiday phenomenon as an object of philosophical and cultural analysis is characterized by a rich morphology. The article proposes the authors’ original classification of holidays based on the comparison of private and public festive spaces and the ratio of sacred and secular content in the structure of the holiday. On the basis of available publications and practical research conducted by the authors, the system, hierarchy, and features of the motivation of festive culture subjects are revealed. With the help of program-targeted, structural-functional, hermeneutic, and sociological methods, the main features of the holiday, its features and functions have been studied. This framework made it possible to carry out a theoretical and methodological reconstruction of the phenomenon of the holiday, analyze its scenario and identify its structure, algorithm, order, and influence on people. The holiday phenomenon is considered in the context of the dialectical contradiction between the labor and leisure contexts of human existence. By utilizing the method of nomothetic diagnostics, the system of motivation of different age groups of the population participating in the holidays is generalized and specified. The authors suggest a hypothesis about the essential transformation and formal metamorphosis of the holiday phenomenon, taking place in the context of growing socio-economic, geopolitical, and cultural instability and uncertainty in the modern world.
How Many Books Did F. Skorina Publish in Prague?
Authors: Lemeshkin Ilya
Published: June 2023

The advent of the printing press proved to be a decisive factor in the cultural development of mankind as a whole. In Eastern Europe, the complex path to the new information technology had its own specific characteristics: revolutionary technology was first used for the needs of East Slavs in 1517–1519 in the Czech kingdom and from there it was transferred to Grand Duchy of Lithuania in 1521–1522. The process of developing the printed word is linked to the figure of Francis Skorina (1470–1551), who, after the Congress of Vienna, was given the opportunity to become a book publisher in Prague. The focus of the proposed study is a corpus of Cyrillic printed monuments, which together tell an entertaining story of equal cultural and technological cooperation in the first quarter of the 16th century. In the context of mastering and adapting the latest technology, it is noteworthy that the Cyrillic Prague editions are characterized by exceptionally high polygraphy quality, which exceeds the level of Czech printing of the first half of the 16th century. Therefore, they are nowadays regarded not only as valuable works of East Slavic cultural heritage but also as outstanding monuments of Czech printing (významné bohemikální památky). From the perspective of encompassing philology (celostní filologie), from a modern methodological base and a new phase in the development of Prague functional structuralism, the article raises the question of how many of these printed monuments intended for the East Slavic reader were published in Prague at that time.
Optimization of Dispersions in GeO2-doped Photonic Crystal Fibers with Square Lattice
Authors: Thuy Nguyen Thi
Published: June 2023

Germanium doped photonic crystal fibers with differences in the layers' air hole diameters in the cladding are presented to obtain flat dispersion, small effective mode area, and low attenuation property for supercontinuum generation applications. The flatness and small value of the dispersion depend on the lattice geometry when the fibers have the same germanium doping concentration. The dispersion of the square lattice fibers is a flatter and smaller value at the pump wavelength than the circular lattice fibers. Square lattice fibers with Ʌ = 0.9 µm, d1/Ʌ = 0.4 and Ʌ = 1.0 µm, d1/Ʌ = 0.45 are proposed for supercontinuum generation which has anomalous and all-normal dispersion, respectively. Their small dispersion values of 0.449 ps /nm.km and −1.096 ps/nm.km are suitable for broad spectrum supercontinuum generation. The small effective mode area and low attenuation of the two fibers of 3.221 µm2, 2.361 µm2 and 1.805×10−7 dB/m, 1.322×10−15 dB/m, respectively are favorable conditions for choosing a laser pump sources with low peak power. The proposed fibers can be new supercontinuum generation source replacing traditional glass core fibers.
Infrared monitoring of the metal surface temperature of superheater pipes in transient modes
Authors:   Omsk State Technical University, Valke A. A. , Zakharenko V. A. ,   Omsk State Technical University, Lobov D. G. ,   Omsk State Technical University, Ponomarev D. B. ,   Omsk State Technical University, Shkaev A. G. ,   Omsk State Technical University, Nikolaev M. Yu. ,   Omsk State Technical University, Lukuta S. V. ,   «TGC-11» JSC
Published: June 2023

This work is devoted to the problem of infrared monitoring of the metal temperature of the surface of superheater pipes. Monitoring is implemented on the basis of a thermal imager cameras that performs contactless monitoring of the surface temperature of the pipes of the wall superheater. The results of modeling the temperature distribution along the pipe of a wall-mounted superheater in the presence of contamination and without are presented. The calculation of the number of thermal imager cameras required for infrared monitoring is performed. The developed design solutions for the installation site of thermal imager cameras on a TP-82 type boiler have been confirmed experimentally.
Research of changes in electromagnetic parameters in controlled asynchronous special electric drives
Authors:   Kuban State Technological University, Karandey V. Yu. , Popova O. B. ,   Kuban State Technological University, Popov B. K. ,   Kuban State Technological University, Afanasiev V. L. ,   Kuban State Technological University
Published: June 2023

The article researches the changes in the electromagnetic parameters of controlled asynchronous special electric drives. Special asynchronous electric drives are controlled cascade electric drives of cylindrical and axial designs. The study of the dynamics of parameter changes is carried out on the basis of the method of electromagnetic energy conversion and the theory of electromagnetic circuits. As a result, for new mathematical models of the electromagnetic system of the studied asynchronous electric drives, the parameters of the electromagnetic field of a closed coil of one coil of an electric winding with electric current in a homogeneous medium are determined. The solved problem is spatial, since the distribution of electromagnetic induction in a coil of a given shape of an electromagnetic coil is determined. The obtained conclusions for determining the electromagnetic parameters of cylindrical and axial motors of special electric drives allow us to correctly solve the problems of modeling, designing and improving the efficiency of the studied electric drives and electromechanical energy converters of cylindrical and axial designs. The results of the study are applicable to create a computer-aided design system for the research asynchronous electric drives and solve modeling and design problems. The conducted research allows creating electric drives with optimal weight, size and energy indicators.
Twelve-pulse rectifiers in power supply system of urban electric transport aleva
Authors:   Omsk State Transport University, Salita E. Yu. , Kovaleva T. V. ,   Omsk State Transport University
Published: June 2023

The introduction of twelve-pulse rectifiers instead of six-pulse ones at traction substations of urban electric transport leads to an increase in technical and economic indicators, energy savings, a decrease in leakage current. These result in electrical safety of passengers, a trolleybus driver and depot maintenance personnel. Twelve-pulse rectifiers can have a serial or parallel connection of sixpulse bridges. With a parallel circuit, it is necessary to have an equalizing reactor. The implementation of a twelvepulse serial type rectification scheme can be carried out by industrial development by manufacturers of new dry converter transformers with different typical power and new rectifiers (blocks). As part of the new rectifiers, it is necessary to have tablet avalanche valves with coolers based on heat pipes due to their advantages over nonavalanche valves.
TWO NEW SPECIES OF THE GENUS DIAMESA MEIGEN (DIPTERA, CHIRONOMIDAE, DIAMESINAE) FROM THE OLA RIVER ON THE SEA OF OKHOTSK COAST OF MAGADAN REGION
Authors:   Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far East Branch of the Russian Academy of Sciences, Vladivostok, 690022, Russia, Makarchenko E.A. ,   Far Eastern State Technical Fisheries University, 52b Lugovaya St., Vladivostok, 690087, Russia, Azmukhametova L.M. ,   Far Eastern State Technical Fisheries University, 52b Lugovaya St., Vladivostok, 690087, Russia, Dabizha M.K. ,   Far Eastern State Technical Fisheries University, 52b Lugovaya St., Vladivostok, 690087, Russia
Published: June 2023

Illustrated descriptions of two new species Diamesa olaensis sp. nov. and D. portentosa sp. nov., from the Ola River on the Sea of Okhotsk coast in the Magadan Region of the Russian Far East are presented.
NINE-SPINE STICKLEBACK PUNGITIUS PUNGITIUS FROM THE LAKES OF THE LOWER STREAM OF THE OBLUKOVINA RIVER (WESTERN KAMCHATKA)
Authors:   Kamchatka Branch of Pacifi c Geographical Institute, Russian Academy of Sciences, FEB RAS, 6 Partizanskaya St., Petropavlovsk- Kamchatsky, 683000, Russia, Tokranov A.M. , Paskochina A.A. ,   Kamchatka Branch of Pacifi c Geographical Institute, Russian Academy of Sciences, FEB RAS, 6 Partizanskaya St., Petropavlovsk- Kamchatsky, 683000, Russia
Published: June 2023

racteristic of the size-weight composition and nutrition of the nine-spine stickleback Pungitius pungitius in the small fl oodplain lakes Thuklu and Krivoe, located on the western coast of Kamchatka in the lower stream of the Oblukovina River is given. It has been established that the maximum length of this stickleback here reaches 70 mm, and the body weight is about 2 g. In these lakes, the nine-spine stickleback is a nektobenthophage, the main food objects of which are various small benthic organisms (mainly Ostracoda, Bivalvia and Amphipoda), larvae of Chironomidae and adults of Hemiptera. The habitation of the ninespine stickleback in small closed water bodies with limited food resources, together with the pond smelt Hypomesus olidus, has led to an almost complete divergence of their food spectra.
Potential Alternatives in the Changing World Order
Authors: Çınar Yusuf
Published: June 2023

Discussions on monopolar and multipolar world order started after the Cold War. World order may generally categorize global norms that support international power balance and hierarchy.1 When the American order had frequent crises after the Cold War, alternative world order discussions were re-triggered. These three works can help us interpret the effects of China, Russia, and Iran on the international system and guide us in understanding the discussions about the alternative world order.
Turkish Foreign Policy in the Face of Regional and Global Challenges
Authors: Duran Burhanettin , İnat Kemal
Published: June 2023

This article essentially posits that Türkiye took advantage of the deepening competition between global powers under the Justice and Development Party (AK Party) to part ways with its traditional foreign policy tradition and pursue a more independent approach. That the country expanded its economic and military capacity significantly during the relevant period to support a balanced policy between the West, Russia, and China is another major argument. To put those claims to the test, this article primarily analyzes the expansion of Türkiye’s economic and military capacity and proceeds to focus on its policy toward the deepening rivalry between the West and Russia (due to the Ukraine war) and how it responded to the “rise of Asia.” Last but not least, this piece analyzes Türkiye’s pursuit of a more independent foreign policy, how the country clashed with the U.S., the European Union, and Russia as well as their allies on the ground, and how Ankara used its policy of balance to keep a lid on those tensions.
The Impact of the Russia-Ukraine War on Türkiye's Foreign Trade
Authors: Özdemir Adnan
Published: June 2023

This article analyzes the impact of Russia’s February 24, 2022 invasion of Ukraine and the ongoing war on Türkiye’s foreign trade. Türkiye’s shared maritime borders with Russia and Ukraine in the Black Sea and Russia accounting for a significant percent of Türkiye’s foreign trade renders the conflict all the more important for Ankara. Accordingly, this article compares the import-export data from 2022, after the war erupted, with the relevant figures over the last decade. Furthermore, the effect of the Russia-Ukraine war on the tourism and contracting sectors, which make the most positive contribution to Türkiye’s current account deficit and are at the forefront of the locomotive sectors, is also discussed.
Epidemiology of developmental dysplasia of the hip at a tertiary hospital in Oman
Authors: Al Azri Mohammed S. , Al Abdali Masoud N. , Taqi Alaa M.
Published: June 2023

Objectives:

Developmental dysplasia of the hip (DDH) is common in Oman in clinical practice, but the incidence in Oman is still unknown. This study aimed to evaluate the incidence and characteristic features of DDH in the Omani population managed at Khoula Hospital (KH).

Methods:

This is a retrospective study conducted at KH, targeting all Omani pediatric patients who have been officially diagnosed with DDH between the periods from January 2009 to December 2019. The data were collected from the medical record system at the hospital and phone interviews with the patient’s family to fill out the missed information.

Results:

The study included 795 DDH-diagnosed patients, out of which 652 (82.0%) were female and 143 (18.0%) were male, giving a ratio of 4.5:1. Bilateral DDH was diagnosed in 300 (37.7%) patients, left-sided DDH in 307 (38.6%), and right DDH in 188 (23.6%) patients. At least half of the DDH cases were 6 months old or younger at the first presentation to the hospital and 16.6% were diagnosed after the age of 18 months. Remarkably, at least one risk factor was present for 581 (73.1%) patients. The remaining patients had no risk factors for DDH at all. The prevalence of the first child in the family was 33.0% and oligohydramnios 10.9%. The estimated DDH incidence in this study is 1.05/1000 live births/year.

Conclusion:

Based on the national live births annual records from Oman National Center for Statistics and Information, this study estimated the DDH incidence to be 1.05/1000 live births. These findings cannot be generalized nationally as they are from a single center. We recommend conducting a multicenter prospective study to identify DDH incidence in Oman accurately. National guidelines and screening programs must be developed and executed for early detection and management.
Connecter les leçons d'éducation physique et sportive aux intérêts individuels des élèves : La personnalisation du contexte
Authors: Patois Louise , Fafournoux Benoît , Pasco Denis , Roure Cédric
Published: June 2023

L’attrait constant pour la nouveauté et les nouvelles technologies dans la société actuelle engendre souvent de la part des élèves des comportements de zapping en éducation physique, et plus largement, dans le cadre scolaire. S’inscrivant alors dans un rôle de consommateur, l’élève éprouve rapidement lassitude et ennui, ce qui le place en décalage avec les demandes scolaires comme faire preuve de persistance dans l’effort physique pour apprendre. En créant des liens concrets entre les leçons d’éducation physique et les intérêts extra-scolaires des élèves, la personnalisation du contexte a pour objectif de réduire ce décalage. L’enjeu de cette étude est de mettre en lumière le concept de personnalisation du contexte en éducation physique en s’appuyant sur une illustration, prochainement testée en course d’orientation. Nous montrerons que la mise en place d’un enseignement tenant compte du capital culturel, des préférences et aspirations des élèves peut être la source d’un engagement durable dans les apprentissages.
Potential of Cellulose Acetat Separator of Empty Palm Oil Fruit Bunches and Polyvinylidene Fluoride for Energy Storage Applications
Authors: Ginting Delovita , Na Duma Tulus , Rahmadani Nofia , Suryani Yola , Haryanti Rismadani
Published: June 2023

One of the components that play an important role in maintaining battery security is the separator. The separator plays a role in preventing short circuits due to direct exchange between the anode and cathode in the battery cell. To avoid leakage or short circuit during the process, the separator must have good mechanical properties. For this reason, modifications are needed to improve the characteristics of the separator. The modification process was carried out by mixing Poyvinylidene Fluoride (PVDF) and cellulose acetate (CA) polymers. The CA used in this study was obtained by utilizing natural waste extracts in the form of empty oil palm fruit bunches (EFB). This study aims to see the effect of variations in the addition of CA EFB and PVDF on the characteristics of the resulting separator. Synthesized CA EFB was characterized using Fourier Transfor Infrared (FTIR) spectroscopy which showed that cellulose had been successfully synthesized into cellulose acetate.. The separator produced in this study showed good electrolyte absorption, indicated by the occurrence of an oxidation-reduction reaction process on the hysteresis curve with a wider and reversible loop upon the addition of 0.2 g CA. The mechanical characteristics of the separator also increased with the addition of CA concentration, the separator with the addition of 0.3 g CA showed the highest tensile strength value of 62.335 MPa and the highest porosity value of 89.35%. The separator with the addition of 0.3 g of cellulose acetate also decomposes more quickly, indicated by a weight loss percentage of 60%. The results of this test indicate that the addition of CA EFB and PVDF can affect the physical and mechanical characteristics of the separator which has the potential to become a battery separator.
Evaluating scalable supervised learning for synthesize-on-demand chemical libraries
Authors: Alnammi Moayad , Liu Shengchao , Ericksen Spencer S , Ananiev Gene E , Voter Andrew F , Guo Song , Keck James L , Hoffmann F Michael , Wildman Scott A , Gitter Anthony
Published: June 2023

Traditional small molecule drug discovery is a time consuming and costly endeavor. High-throughput chemical screening can only assess a tiny fraction of drug-like chemical space. The strong predictive power of modern machine learning methods for virtual chemical screening enables training models on known active and inactive compounds and extrapolating to much larger chemical libraries. However, there has been limited experimental validation of these methods in practical applications on large commercially-available or synthesize-on-demand chemical libraries. Through a prospective evaluation with the bacterial protein-protein interaction PriA-SSB, we demonstrate that ligand-based virtual screening can identify many active compounds in large commercial libraries. We use cross validation to compare different types of supervised learning models and select a random forest classifier as the best model for this target. When predicting the activity of more than 8 million compounds from Aldrich Market Select, the random forest substantially outperforms a naïve baseline based on chemical structure similarity. 48% of the random forest's 701 selected compounds are active. The random forest model easily scales to score one billion compounds from the synthesize-on-demand Enamine REAL database. We tested 68 chemically-diverse top predictions from Enamine REAL and observed 31 hits (46%), including one with an IC50 value of 1.3µM.
A process-level perspective of the impact of molecular force fields on the computational screening of MOFs for carbon capture
Authors: Cleeton Conor , Lopes de Oliveira Felipe , Neumann Rodrigo , Farmahini Amir , Luan Binquan , Steiner Mathias , Sarkisov Lev
Published: June 2023

The question we pose in this study is to what extent the ranking of metal organic frameworks (MOFs) for adsorption-based carbon capture, and the selection of top performers identified in Pressure Swing Adsorption (PSA) process modelling, depends on the choice of the commonly available forcefields. To answer this question, we first generated distributions of CO2 and N2 adsorption isotherms via molecular simulation in 690 MOFs using six typical forcefields: the UFF or Dreiding sets of Lennard-Jones parameters, in combination with partial charges derived from ab initio calculations or by charge equilibration schemes. We then conducted a systematic uncertainty quantification study using PSA process-level modelling. We observe that: (i) the ranking of MOFs significantly depends on the choice of forcefield; (ii) partial charge assignment is the prevailing source of uncertainty, and that charge equilibration schemes produce results which are inconsistent with ab initio-derived charges; iii) the choice of Lennard-Jones parameters is a considerable source of uncertainty. Our work highlights that is not really possible to obtain material rankings with high resolution using a single molecular modelling approach and that, as a minimum, some uncertainty should be estimated for the performance of MOFs shortlisted using high throughput computational screening workflows. Future prospects for computational screening studies are also discussed.
Parylene-C coating protects resin 3D printed devices from materials erosion and prevents cytotoxicity towards primary cells
Authors: Musgrove Hannah B. , Cook Sophie R. , Pompano Rebecca R.
Published: June 2023

Resin 3D printing is attractive for rapid fabrication of microscale cell culture devices, but common resin materials are unstable and cytotoxic under culture conditions. Strategies such as leaching or over-curing are insufficient to protect sensitive primary cells such as white blood cells. Here, we evaluated the effectiveness of using parylene-C coating of commercially available clear resins to prevent cytotoxic leaching, degradation of microfluidic devices, and absorption of small molecules. We found that parylene-C significantly improved both the cytocompatibility with primary murine white blood cells and the material integrity of prints, while maintaining the favorable optical qualities held by clear resins.
Validation of In-field Calibration for Low-Cost Sensors Measuring Ambient Particulate Matter in Kolkata, India
Authors: Nobell Siddharth , Majumdar Arnab , Mukherjee Shovon , Chakraborty Sukumar , Chatterjee Sanjoy , Bose Soumitra , Dutta Anindita , Sethuraman Sandhya , Westervelt Daniel , Sengupta Shairik , Basu Rakhi , McNeill V. Faye
Published: June 2023

Low-cost sensors (LCS) provide opportunities for neighborhood-level air pollution data collection, yet significant knowledge gaps remain regarding the accurate application and interpretation of LCS. In this study, we present an in-field calibration of a network of 20 low-cost ambient particulate matter sensors (LCS) in greater Kolkata, India, operating between October 2018-April 2019. In order to understand LCS performance in relation to local reference-grade PM2.5 monitors (RGMs), three of these LCS were co-located with RGMs operated by the West Bengal Pollution Control Board at Rabindra Bharati University (RBU), Victoria Memorial (VICTORIA), and Padmapukur (Howrah, PDM). Data from the co-locations were used to calibrate the LCS network using random forest regression and multiple linear regression approaches. Measured relative humidity and temperature were significant model features. Agreement between the LCS and RGM for 24-h averaged PM2.5 measurements was strongest at RBU, with an uncalibrated root mean squared error (RMSE) of 27.1 μg m-3, followed by PDM (32.6 μg m-3) and VICTORIA (50.7 μg m-3). Multiple linear regression was used to derive calibration models. Cross-calibration between co-located LCS-RGM pairs was tested. The LCS data after cross-calibration correctly identified days as being in or out of attainment with the 24h National Ambient Air Quality Standard of 60 μg m-3 91% of the time. The corrected data accurately identifies days with an India scale Air Quality Index of “poor” or worse 94% of the time. This suggests that LCS can be a useful supplement to RGM networks for air quality management. Diurnal trends and a high level of correlation across the hybrid LCS-RGM network suggest regional and secondary sources of PM2.5 are important in Kolkata.
Mechanism of Cu-catalyzed iododeboronation: A description of ligand-enabled transmetalation, disproportionation, and turnover in Cu-mediated oxidative coupling reactions
Authors: Andrews Matthew , Carpentier Ambre , Slawin Alexandra , Cordes David , Macgregor Stuart , Watson Allan
Published: June 2023

We report a combined experimental and computational study of the mechanism of the Cu-catalyzed arylboronic acid iododeboronation reaction. A combination of structural and DFT analyses has allowed determination of the identity of the reaction pre-catalyst and the first complete description of the catalytic cycle. Key findings include a rationale for ligand stoichiometry related to key turnover events – the ligand facilitates transmetalation via H-bonding to an organoboron boronate generated in situ and ligand loss/gain is integral to the key oxidative events. These data provide a framework for understanding ligand effects on these key mechanistic processes, which underpin several classes of Cu-mediated oxidative coupling reactions.
All-Organic Battery Based on Deep Eutectic Solvent and Redox-Active Polymers
Authors: Uhl Matthias , Sadeeda . , Penert Philipp , Schuster Philipp A. , Schick Benjamin W. , Muench Simon , Farkas Attila , Schubert Ulrich S. , Esser Birgit , Kuehne Alexander J. C. , Jacob Timo
Published: June 2023

Sustainable battery concepts are of great importance for the energy storage demands of the future. Organic batteries based on redox-active polymers are one class of promising storage systems to meet these demands, in particular when combined with environmentally friendly and safe electrolytes. Deep Eutectic Solvents (DESs) represent a class of electrolytes that can be produced from sustainable sources and exhibit in most cases no or only a small environmental impact. Because of their non-flammability, DESs are safe, while providing an electrochemical stability window almost comparable to established battery electrolytes and much broader than typical aqueous electrolytes. Here, we report the first all-organic battery cell based on a DES electrolyte composed of sodium bis(trifluoromethanesulfonyl)imide (NaTFSI) and N-methylacetamide (NMA) alongside the electrode active materials poly(2,2,6,6-tetramethylpiperidin-1-yl-oxyl methacrylate) (PTMA) and crosslinked poly(vinylbenzylviologen) (X-PVBV2+). The resulting cell shows two voltage plateaus at 1.07 V and 1.58 V and achieves Coulombic efficiencies of 98 %. The X-PVBV/X-PVBV+ redox couple turned out to be much more stabilized in NaTFSI:NMA 1:6 than the X-PVBV+/X-PVBV2+ couple, leading to asymmetric capacity fading during cycling tests.
Photochemical CO2 Capture and Release in Water Enabled By Photoacid Under Visible Light
Authors: Seo Hyowon , Hatton T. Alan
Published: June 2023

The urgency to address climate change and its environmental consequences demands the development of effective carbon capture technologies. The relationship between rising global temperatures and increased atmospheric CO2 levels necessitates innovative approaches for mitigating this critical issue. Here, we present a novel photochemical strategy utilizing photoacids in an aqueous bicarbonate buffer system for reversible carbon capture and release. We investigated the photochemical modulation of hydrophilic pyranine as a model photoacid, showcasing its ability to facilitate the capture and release CO2. Control experiments provided evidence of the photoacid effect and its contribution to CO2 release, complemented by the photothermal effect. Cyclic experiments demonstrate the efficiency and reliability of the photochemical carbon capture strategy across multiple cycles. In addition, we explored the potential use of meta-stable state photoacids for this purpose. This research introduces possibilities for the advancement of photochemical carbon capture systems, offering promising avenues for addressing the challenges associated with climate change.
Catalytic transfer hydrogenolysis of switchgrass lignin with ethanol using spinel-type mixed-metal oxide catalysts affords control of the oxidation state of isolated aromatic products
Authors: Godwin James , Babusci Jonah , Wonderling Nichole , Seabright Kendhl , Harper David , Chmely Stephen
Published: June 2023

Chemical reductions of lignin are useful to remove oxygen and create product slates that can function as renewable platform molecules for new fuels and chemicals. Catalytic transfer hydrogenolysis (CTH) is an underexplored method to conduct reductions of lignin that obviates the use of dangerous and non-renewable hydrogen gas. While noble metals are used extensively as catalysts for transfer hydrogenation, one major challenge for their deployment is related to their sustainability. In this work, we synthesized mixed-metal oxides of earth-abundant Co and Ni. We characterized these catalysts using powder x-ray diffraction (XRD) and tested their reactivity for CTH of acetophenone. Among the catalysts we tested, we noted that the spinel NiCo2O4 demonstrated the highest conversion of acetophenone (75%) and highest selectivity for ethylbenzene (90%), so we applied it to valorization of switchgrass lignin extracted under mild operating conditions by cosolvent enhanced lignocellulosic fractionation (CELF). The catalytically depolymerized lignin showed an increase in selectively deoxygenated monomeric compounds. Using 2D-NMR spectroscopy, we demonstrated the lignin displayed highly reduced aliphatic carbons resulting from the reduction reaction at the Cα sites mediated by our catalyst material. These results are critical to the further development of the lignin-first biorefinery as they demonstrate the use of sustainable catalyst materials and mild transformation conditions to generate and refine a suite of new bioproducts.
Urban stressors impact lipid profiles in freshwater periphytic communities
Authors: Mazzella Nicolas , Vrba Romain , Moreira Aurélie , Creusot Nicolas , Eon Mélissa , Millan-Navarro Débora , Lavoie Isabelle , Morin Soizic
Published: June 2023

The composition of lipids in algae are significantly influenced by environmental factors, including light intensity. Exposure to organic and inorganic contaminants can also disrupt the synthesis of fatty acids, changing the lipid composition of microalgae in periphytic communities. In this study, we looked at how a biocide such as dodecylbenzyldimethylammonium chloride (BAC 12) and two photoperiod durations can affect a biofilm's polar lipidome in a microcosm experiment. The heterotrophic compartment appeared to be raised by exposure to BAC 12 at the expense of phototrophic organisms. Additionally, the overall decline in polyinsaturated fatty acids indicated that the biofilm's phototrophic organisms were all severely impacted. However, it may be difficult to differentiate the effects of contamination from those of light, since there was no observable effect of photoperiods on the conventional fatty acid determination. The molecular species composition of both glycolipids and phospholipids was investigated in additional multivariate analyses. It was suggested that some molecular species may serve as more specific markers of light duration at the biofilm scale. Lastly, we recommend applying a similar lipidomic approach with monospecific cultures of microalgal strains in future research to support these findings, as the methodology used in this study would be applicable to other biofilm-derived microorganisms.
In situ Observation of Nanoparticle Photocharging: Gold Nanorods as Photochemical Capacitors
Authors: Stete Felix , Koopman Wouter , Bargheer Matias
Published: June 2023

Light can induce charge on plasmonic nanoparticles. This idea was used in the last years to explain experi- mental results on chemical reactions on gold and silver nanoparticles. Here, we give spectroscopic evidence for this photocharging effect and present a method to examine the charge transfer from a hole scavenger to gold nanorods in situ. In contrast to the plasmon resonance in gold nanospheres, the longitudinal resonance of gold nanorods is very sensitive to the free electron density in the metal. We show here how the illumination with light blue-shifts the resonance visualizing the transfer of electrons from ethanol in the solution to the nanoparticles and model the intensity-dependence in a capacitor model. The peak can also be shifted back again after illumination when the particles are left in dark or exposed to molecules with a low reduction potential. We discuss how particle size, oxygen in the solution or the absence of ethanol influence the particle charging. With this work, we open the door to further detailed studies that optimize the exploitation of the often neglected effect of photocharging.
MS2Mol: A transformer model for illuminating dark chemical space from mass spectra
Authors: Butler Thomas , Frandsen Abraham , Lightheart Rose , Bargh Brian , Taylor James , Bollerman TJ , Kerby Thomas , West Kiana , Voronov Gennady , Moon Kevin , Kind Tobias , Dorrestein Pieter , Allen August , Colluru Viswa , Healey David
Published: June 2023

The ability to identify small molecules in complex samples from their mass spectra is among the grand challenges of analytical chemistry. Improvements to this ability could significantly advance fields as diverse as drug discovery, diagnostics, environmental science, and synthetic biology. A primary bottleneck is that standard structure elucidation technologies are limited to identifying only those molecules that are contained in databases of known spectra or molecular structures and are therefore not well suited to identifying the vast majority of potentially billions of natural metabolites, whose structures are not yet catalogued. To improve the identification of molecular structures within this vast dark chemical space, we present MS2Mol, a \textit{de novo} structure prediction model based on a generative sequence to sequence transformer. We also release EnvedaDark, a first-of-its-kind for benchmarking identification performance on unknown metabolites. EnvedaDark contains experimental mass spectra from 226 natural products not currently found in major databases. We demonstrate on this challenging dataset that MS2Mol is able to predict 21\% of molecular structures to within a close-match accuracy threshold and 62\% to within meaningful similarity, both of which are significant improvements over the closest match retrieved using standard database methods. We further present a confidence scorer that enables practical usage for novel molecule discovery and enriches the accuracy on meaningfully-similar and close-match thresholds to 98\% and 63\%, respectively, for the top 10\% most confident predictions.
High-performance and chemically self-charging flexible aqueous zinc-ion batteries based on organic cathodes with Zn2+ and H+ storage
Authors: Liu Qi , Song Xiuting , Su Haoqi , Chen Xiaojuan , Yang Baozhu , Zhang Huimin , Lu Yiwen , Jiang Qingyan
Published: June 2023

Chemically self-charging aqueous zinc-ion batteries (AZIBs) via air oxidation will provide new opportunities for future wearable electronic devices. Herein, we display two high-performances flexible AZIBs based on trifluorohexaazatrinaphthylene (TFHATN)/trichlorohexaazatrinaphthylene (TCLHATN) cathode, which can be recharged via air without using external power supply. The flexible Zn//TFHATN/Zn//TCLHATN battery presents good mechanical flexibility and higher volumetric energy density of 3.4/3.7 mWh cm-3. The air-recharging capability originates from a spontaneous redox reaction between the discharged TFHATN/TCLHATN cathode and O2 from air. After exposed to air for 15 h, the discharged Zn//TFHATN/Zn//TCLHATN battery can be recharged to 1.2 V around, exhibits high discharge capacity, high-rate performance, higher self-charging cycle stability (8 cycles), and works well in chemical or/and galvanostatic charging mixed modes, displaying good reusability. This work provides a strategy for developing high-performance flexible air-rechargeable AZIBs.
Electric Vehicles as Flexibility Assets: Unlocking Ecosystem Collaborations: Leveraging Value Creation Partnerships for Mutually-beneficial Exchanges
Authors:   Salzburg Research Forschungsgesellschaft m.b.H., Thelen Michael , Pressmair Guntram ,   e7 Energy Innovation & Engineering, Lassnig Markus , Hornung-Prähauser Veronika
Published: June 2023

The trend towards energy decentralization and innovations in data-driven e-mobility have given way to a new type of electric vehicle charging; namely, smart charging and vehicle-to-grid technologies. In order to unlock the full potential of electric mobility’s flexibility, an exploratory ecosystem approach is first warranted in order to uncover stakeholder requirements, activities and (inter-)dependencies. The purpose of this research is to lay the foundation for future resilient business models in the grid-aware mobility ecosystem, which require novel multi-stakeholder collaborations. Through rigorous exploratory ecosystem modeling, flexibility recipient taxonomies, and a co-creation workshop, we have sought to uncover stakeholder intricacies in order to improve the overall innovation ecosystem value proposition. The results suggest many novel perspectives which were not considered (such as the issue of double taxation) and several prospective cross-sector business opportunities for fleet operators, vehicle OEMs, aggregators, and even public parking spaces. Additionally, stakeholders vary considerably in terms of needs, value-adding activities, (inter-)dependencies, risk, and flexibility services provided/requested, which need to be weighed and overcome on an (inter-)sectoral level.
PRISM: Furthering Business Model Innovation Visualizations through Refracting Light
Authors:   Open Universiteit, Stough T. , Calster, van S. ,   Virtus Consolo, Lambrechts W. , Klaver J.S.
Published: June 2023

The visualizations of business models can be useful tools for organizations to reflect on how they create and capture value, but as business model visualizations become more comprehensive, they also become more complex. Given the goal of reducing complexity for organizational sense making, this evolution has furthered a gap between theory and practice. We have distilled our experiences using business model visualizations in organizational contexts to identify useful revisions to business model visualizations to aid in sense-making. In this article, we employ the metaphor of a prism and the process of refraction to further refine the visualization of business models, with the goal of aiding organizations in their sense making. We introduce the PRISM framework for organizational sense making of the elements, dimensions, and lenses of organizations through which they operate and make sense of their environment, and we offer real-world examples of how the PRISM framework aided in organizational sense making. Our research contributes to helping close the gap between theoretical business model visualizations and the usefulness of these visualizations to reduce complexity in real-world organizational contexts. In addition, given our alignment with purpose-driven approaches to strategy development and implementation, we also contribute to theoretical discussions of the business-society interface and conceptualizations of value.
The positive financial and sustainability business case (Pos-FSBC)
Authors:   The Hague University of Applied Sciences, Kraaij Albert , Evangelista Agnes , Poldner Kim
Published: June 2023

This paper seeks to contribute to sustainable business model innovation (SBMI) literature. It aims to do so by putting forward a relatively simple tool that simultaneously calculates the financial value alongside sustainability impact based on the Sustainable Development Goals (SDGs) of a proposed business model innovation. For small businesses to validate the outcome of a proposed SBMI, some form of sustainability measurement will be necessary. Simple tooling specifically aimed at small businesses do not exist. We address this gap in how to predict or create a prognosis of the combined financial and sustainability effect of a proposed business model (BM) in a frugal (easy, time and knowledge effective) and effectual (allowing for iterations, available means and calculating affordable loss) manner. The tool is called the Pos-FSBC (Positive Financial and Sustainability Business Case). The instrument is a calculation model in Excel where users insert a limited number of numerical variables. Alongside financial variables the tool uniquely links the key variable ∆ SDG to the expected quantity sold, it then calculates the contribution to the SDGs in a relevant and measurable unit. By being successful with a sustainable innovation, the tool helps businesses drive out non-sustainable competitors. The tool has been iteratively developed and tested in several students’ projects and in a pilot with practitioners. Based on the findings we propose more iterations to develop an understanding whether the tool inspires business change and if so how.
Introducing a novel framework for regenerative business
Authors: Ryan Natalie , Beesemyer Laurel , Caulliez Sarah , Waiyaki Jane , Nayak Mandira , Chakrabarty Rashmi , Kim Sarang K.A. , Vladimirova Doroteya ,   University of Cambridge
Published: June 2023

Rampant environmental devastation and social inequities are undeniable impacts of our current global economic system, calling into question the continuation of “business-as- usual”. Regenerative business is an emergent concept that could deliver the urgent transformation required by changing the current paradigm of “doing less bad” to maximizing positive impact for the planet and future generations to continue to thrive. Industry is still catching-up with “conventional sustainability” business practices and there are very few companies exploring regenerative business models. Equally, few definitions of regenerative business exist in the academic literature. There is a need to build new theory on regeneration in the business context. This paper proposes a Framework for Regenerative Business. It reviews and consolidates existing theory on regenerative approaches and principles, and adopts a qualitative case-studies methodology to identify current business practices. Semi-structured interviews conducted with fourteen companies across multiple industries inform the common themes and emergent principles central to the development of the Framework for Regenerative Business. We contribute to advancing theory in the nascent field of regenerative business by providing a foundation from which to develop regenerative business models. Central to the Framework for Regenerative Business is empathetic leadership, that employs six core principles including empowered stakeholder relationships, connection to context and place, circular flows, trust and transparency, innovation and adaptability to ecosystems, and building inner and outer capacity for systems resilience. The interplay of the principles is guided by a meta-purpose, which is cascaded through the value proposition, seeking to create systemic positive impact.
Learning in horizontal scaling MongoDB data sharding on windows
Authors: Ei Phyu Sin Win
Published: June 2023

MongoDB is a multi-storage NoSQL database. With the fast growth of technology, the number of large databases has exponentially increased, and relational databases cannot fulfill the need for managing such large amounts of data. To address this issue, intensive research was made on the NoSQL (Not Only SQL) data management model, specifically focusing on MongoDB, and a novel approach to manage large-scale remote sensing data is proposed. Social networking sites generate massive amounts of data, and Structured Query Language (SQL) and NoSQL are predominantly used for data storage. NoSQL proves to be a superior choice for web applications due to its ability to handle large data volumes, unlike Relational Database Management Systems (RDBMS). While various data partitioning techniques such as hash and round-robin exist, they are not efficient for small transactions involving only a few tuples. The results demonstrate that the proposed method of different segmentation overcomes the limitations of conventional approaches, facilitating horizontal expansion of the database and making it more suitable for managing extensive stored data. This research provides an essential technical support for effectively managing large amounts of stored data.