bluuebunny/crossref_metadata_2025_split huggingface dataset:
Metal‐free two‐dimensional phosphorene‐based electrocatalyst with covalent P–N heterointerfacial reconstruction for electrolyte‐lean lithium–sulfur batteries
Authors: Zhou Jiangqi , Shu Chengyong , Cui Jiawu , Peng Chengxin , Liu Yong , Hua Weibo , Simonelli Laura , Wu Yuping , Dou Shi Xue , Tang Wei 
Published: February 2024

AbstractThe use of lithium–sulfur batteries under high sulfur loading and low electrolyte concentrations is severely restricted by the detrimental shuttling behavior of polysulfides and the sluggish kinetics in redox processes. Two‐dimensional (2D) few layered black phosphorus with fully exposed atoms and high sulfur affinity can be potential lithium–sulfur battery electrocatalysts, which, however, have limitations of restricted catalytic activity and poor electrochemical/chemical stability. To resolve these issues, we developed a multifunctional metal‐free catalyst by covalently bonding few layered black phosphorus nanosheets with nitrogen‐doped carbon‐coated multiwalled carbon nanotubes (denoted c‐FBP‐NC). The experimental characterizations and theoretical calculations show that the formed polarized P–N covalent bonds in c‐FBP‐NC can efficiently regulate electron transfer from NC to FBP and significantly promote the capture and catalysis of lithium polysulfides, thus alleviating the shuttle effect. Meanwhile, the robust 1D‐2D interwoven structure with large surface area and high porosity allows strong physical confinement and fast mass transfer. Impressively, with c‐FBP‐NC as the sulfur host, the battery shows a high areal capacity of 7.69 mAh cm−2 under high sulfur loading of 8.74 mg cm−2 and a low electrolyte/sulfur ratio of 5.7 μL mg−1. Moreover, the assembled pouch cell with sulfur loading of 4 mg cm−2 and an electrolyte/sulfur ratio of 3.5 μL mg−1 shows good rate capability and outstanding cyclability. This work proposes an interfacial and electronic structure engineering strategy for fast and durable sulfur electrochemistry, demonstrating great potential in lithium–sulfur batteries.
2D Monolayer Catalysts: Towards Efficient Water Splitting and Green Hydrogen Production
Authors: Modi Krishna H. , Pataniya Pratik M. , Sumesh C. K. 
Published: February 2024

AbstractA viable alternative to non‐renewable hydrocarbon fuels is hydrogen gas, created using a safe, environmentally friendly process like water splitting. An important role in water‐splitting applications is played by the development of two‐dimensional (2D) layered transition metal chalcogenides (TMDCs), transition metal carbides (MXenes), graphene‐derived 2D layered nanomaterials, phosphorene, and hexagonal boron nitride. Advanced synthesis methods and characterization instruments enabled an effective application for improved electrocatalytic water splitting and sustainable hydrogen production. Enhancing active sites, modifying the phase and electronic structure, adding conductive elements like transition metals, forming heterostructures, altering the defect state, etc., can improve the catalytic activity of 2D stacked hybrid monolayer nanomaterials. The majority of global research and development is focused on finding safer substitutes for petrochemical fuels, and this review summarizes recent advancements in the field of 2D monolayer nanomaterials in water splitting for industrial‐scale green hydrogen production and fuel cell applications.
Recent Advances of Flexible MXene and its Composites for Supercapacitors
Authors: Jiang Shiben , Lu Linghong , Song Yan 
Published: February 2024

AbstractMXenes have unique properties such as high electrical conductivity, excellent mechanical properties, rich surface chemistry, and convenient processability. These characteristics make them ideal for producing flexible materials with tunable microstructures. This paper reviews the laboratory research progress of flexible MXene and its composite materials for supercapacitors. And introduces the general synthesis method of MXene, as well as the preparation and properties of flexible MXene. By analyzing the current research status, the electrochemical reaction mechanism of MXene was explained from the perspectives of electrolyte and surface terminating groups. This review particularly emphasizes the composite methods of freestanding flexible MXene composite materials. The review points out that the biggest problem with flexible MXene electrodes is severe self‐stacking, which reduces the number of chemically active sites, weakens ion accessibility, and ultimately lowers electrochemical performance. Therefore, it is necessary to composite MXene with other electrode materials and design a good microstructure. This review affirms the enormous potential of flexible MXene and its composite materials in the field of supercapacitors. In addition, the challenges and possible improvements faced by MXene based materials in practical applications were also discussed.
Electrochemical Diselenation of BODIPY Fluorophores for Bioimaging Applications and Sensitization of 1O2
Authors: Bozzi Ícaro A. O. , Machado Luana A. , Diogo Emilay B. T. , Delolo Fábio G. , Barros Luiza O. F. , Graça Gabriela A. P. , Araujo Maria H. , Martins Felipe T. , Pedrosa Leandro F. , da Luz Lilian C. , Moraes Emmanuel S. , Rodembusch Fabiano S. , Guimarães João S. F. , Oliveira André G. , Röttger Sebastian H. , Werz Daniel B. , Souza Cauê P. , Fantuzzi Felipe , Han Jianhua , Marder Todd B. , Braunschweig Holger , da Silva Júnior Eufrânio N. 
Published: February 2024

AbstractInvited for the cover of this issue are the groups of Holger Braunschweig at the Julius‐Maximilians‐Universität Würzburg, Germany and Eufrânio N. da Silva Júnior at the Universidade Federal de Minas Gerais, UFMG, Brazil. The image depicts the electrochemical synthesis of selenium‐containing BODIPY molecules with lightning symbolizing the electrifying synthetic process, while the surrounding elemental chaos hints at the red‐shifted absorption and emission and the transformative photophysical properties of these new compounds. Read the full text of the article at 10.1002/chem.202303883.
Indices for measuring ratooning ability of sugarcane varieties
Authors: Dlamini Njabulo Eugene , Franke Angelinus C. , Zhou Marvellous 
Published: February 2024

AbstractThe primary objective of sugarcane (Saccharum spp.) variety testing programs is to identify cultivars that have high cane yields and good ratooning ability (RA). The purpose of this study was to evaluate the usefulness of six RA indices to estimate RA among sugarcane varieties and to identify an index well suited to predict RA in long‐term ratoon crop cycles. The six indices were as follows: ratoon crops yield means, second ratoon to plant cane yield ratio, final ratoon crop to plant cane yield ratio, mean of ratoon crops to plant cane yield ratio (RP), linear regression, and quadratic regression. Data from four variety trials consisting of eight post‐release varieties plus a control, harvested early, mid, and late in the cropping season for over six crop cycles, were used to estimate the RA indices. To identify indices that can predict RA in long‐term ratoon crop cycles, simple linear regression analyses were used to compare the RA indices derived from 6‐year crop cycles and similar indices derived from data from 111 commercial fields harvested over 11 successive crops. Coefficient of determination (R2) values plotted against their respective ratoon crop numbers were used to determine the minimum number of ratoon crops required to accurately predict RA indices for the 11‐year crop cycle. The six indices varied in their rankings of the RA of varieties, emphasizing the importance of identifying the most appropriate indices for different ratooning practices. Based on its highest R2 value of 0.92, the RP index was identified as the most accurate index to predict RA in long‐term ratoon crop cycles requiring a minimum of five successive crops.
Novel insights on genetics and epigenetics as clinical targets for paediatric astrocytoma
Authors: Johns Dona A. , Williams Richard J. , Smith Craig M. , Nadaminti Pavani P. , Samarasinghe Rasika M. 
Published: February 2024

AbstractPaediatric and adult astrocytomas are notably different, where clinical treatments used for adults are not as effective on children with the same form of cancer and these treatments lead to adverse long‐term health concerns. Integrative omics‐based studies have shown the pathology and fundamental molecular characteristics differ significantly and cannot be extrapolated from the more widely studied adult disease. Recent clinical advances in our understanding of paediatric astrocytomas, with the aid of next‐generation sequencing and epigenome‐wide profiling, have led to the identification of key canonical mutations that vary based on the tumour location and age of onset. These driver mutations, in particular the identification of the recurrent histone H3 mutations in high‐grade tumours, have confirmed the important role epigenetic dysregulations play in cancer progression. This review summarises the current updates of the classification, epidemiology, pathogenesis and clinical management of paediatric astrocytoma based on their grades and the ongoing clinical trials. It also provides novel insights on genetic and epigenetic alterations as diagnostic biomarkers, highlighting the potential of targeting these pathways as therapeutics for this devastating childhood cancer.
Block chain technology for secured dynamic optimal routing in WSN with optimized generative adversarial capsule network
Authors: Bhuvaneswari C. Ambika , Ruby E. D. Kanmani 
Published: February 2024

SummaryOne of the key strategies in wireless sensor network (WSN) for sending data packets to the base station (BC) is known as routing. However, malicious node outbreaks will occur, which exaggerate the functions of WSNs during the routing procedure. A secure routing protocol is necessary to protect the effectiveness of WSN and routing fortification. In real‐time scenarios, the existing routing protocol is volatile dynamically; it makes difficult to identify the performance of unprotected routing nodes. In this manuscript, a unique routing strategy is proposed for secured dynamic optimal routing (SDOR) in WSN that combines block chain technology optimized with a generative adversarial capsule network. Every routing sensor node contains a secret key, which is used to construct a crypto hash signature (CHS) token for flow access. The proposed block chain‐based WSN is used to provide SDOR information using a self‐attention‐based generative adversarial capsule network that is improved using the flamingo search algorithm. Following that, the security on the proposed block chain WSN is assessed from six angles. Block chain token transactions are evaluated using measures including average latency, average energy usage, and throughput. The proposed SDOR‐SA‐GAC‐FSA‐CHS‐BWSN delivers 53.87%, 42.57%, and 32.87% lower average packet delay, 28.97%, 37.73%, and 34.75% lesser identification time analyzed to the existing methods, such as trusted distributed routing scheme for WSNs using block chain (SDOR‐DCNN‐SSOA‐BWSN), secure authentication with DSM‐KL ascertained presentation optimization of hybrid block chain‐enabled model for multi‐WSN (SDOR‐DSM‐KL‐BWSN), and optimizing the valid transaction utilizing reinforcement learning‐based block chain ecosystem in WSN (SDOR‐RIL‐BWSN).
Variation in hydropeaking‐induced stranding of Barbus barbus L. and Chondrostoma nasus L. larvae: Assessing the impact of daytime and down‐ramping rates
Authors: Führer Simon , Auer Stefan , Coudrais‐Duhamel Anna , Olejarz Antonin , Stoisser Felix , Schmutz Stefan , Hayes Daniel S. 
Published: February 2024

AbstractUnnatural changes in river flow patterns resulting from peak‐operating hydropower plants adversely impact freshwater ecosystems. In particular, the rapid dewatering of shoreline habitats during artificial flow down‐ramping puts early fish life stages at a high risk of becoming stranded if they fail to follow receding water levels in time. While extensive research has been conducted on the effects of hydropeaking on salmonid species, there is limited knowledge on the diverse cyprinid family, particularly on vulnerable early life stages. Hence, this study aims to compare the larval stranding of two cyprinid species, the common barbel (Barbus barbus L.) and common nase (Chondrostoma nasus L.), in response to bank dewatering. We conducted larvae experiments in near‐natural mesocosms, simulating single flow down‐ramping events with varying down‐ramping rates (0.3–1.8 cm·min−1) during the day and at night to quantify stranding rates, also including water temperature and fish development. Our results reveal distinct diurnal patterns for both species, with higher stranding rates during the night than during the day in all experimental scenarios. The data also show higher stranding rates at faster down‐ramping, with interaction effects between down‐ramping rates and time of day. The stranding rates between the two species are similar across most of the scenarios. Scenarios with colder water temperatures show that nase larvae tend to strand more frequently than with warmer temperatures. In conclusion, the study results contribute to the ongoing discourse on hydropeaking mitigation by providing new perspectives on flow‐reduction effects on early cyprinid life stages. Mitigation measures should prioritize the periods during early larval development and factor in prevailing water temperatures. Lowering down‐ramping rates, especially during nighttime, will help minimizing negative impacts on aquatic ecosystems, particularly when combining flow rules and habitat restoration measures.
Proglacial lake evolution coincident with glacier dynamics in the frontal zone of Kvíárjökull, South‐East Iceland
Authors: Kavan Jan , Stuchlík Radim , Carrivick Jonathan L. , Hanáček Martin , Stringer Christopher D. , Roman Matěj , Holuša Jakub , Dagsson‐Waldhauserová Pavla , Láska Kamil , Nývlt Daniel 
Published: February 2024

AbstractThe termini of Icelandic glaciers are highly dynamic environments. Pronounced changes in frontal ablation in recent years have consequently changed ice dynamics. In this study, we reveal the inter‐seasonal dynamics of the Kvíárjökull ablation zone and proglacial zone using ArcticDEM and Sentinel‐2 images acquired between 2011 and 2021 and intra‐seasonal dynamics with repeated UAV surveys during summer 2021. Average glacier surface velocity in the ablation zone ranged from 51 m year−1 in 2015 up to 199 m year−1 in 2018, with maxima within the axial zone of the glacier and minima on the glacier edges. Coincidentally, and in accordance with glacier retreat/advance, the ice‐marginal proglacial lake fluctuated in its area, and we interpret that it was also a key factor in the development of the glacier terminus morphology. A complex spatial pattern of glacier surface elevation changes, including thickening in the frontal true left margin of the terminus, is interpreted to be due to variable subglacial topography, relatively fast ice flow from the accumulation zone and an insulating effect of glacier surface debris cover. In contrast, the true right (southern) part of the glacier terminus experienced thinning and retreat/disintegration also during the 2021 summer season, which we attribute to enhanced frontal ablation connected to the intrusion of lake water into the crevassed glacier terminus. Overall, this study suggests that where glaciers are developing ice‐marginal lakes complex patterns of glacier dynamics and mass loss can be expected, which will confound understanding of the short‐term evolution of these environments.
The utilization of phytic acid as a reactive flame retardant in the preparation of a fully waterborne biobased epoxy system
Authors: Aljamal Amer , Marosi György , Szolnoki Beáta 
Published: February 2024

AbstractA fully biobased waterborne flame‐retarded epoxy system was prepared using sorbitol polyglycidyl ether epoxy resin (SPE) and phytic acid (PA) as a reactive flame retardant (FR). The flame‐retardant efficiency was evaluated by comparing the reference SPE‐PA system with solventborne and waterborne SPE systems. Additional enhancement of intumescence and reduction of flammability was achieved by incorporating ammonium polyphosphate (APP) and melamine (MEL) into the SPE–PA system. PA, serving as a curing agent, contributed approximately 1% phosphorous content, resulting in an increased limiting oxygen index (LOI). UL‐94 flammability tests demonstrated improved FR properties with PA, and the addition of 2% phosphorous from APP to SPE‐PA achieved a self‐extinguishing V0 UL‐94 rating. Thermogravimetric analysis (TGA) revealed enhanced thermal stability and higher char yield with PA compared with other curing agents. Mass loss calorimetry (MLC) confirmed the superior charring effect of PA compared with other curing agents. The thermal insulation properties of the residual char were assessed by measuring the temperature on the back surface (Tb) of coated steel plates exposed to a 25 kW/m2 heat flux for 1 h. The PA sample containing 3%P of APP exhibited a Tb decrease of 130°C compared with the solventborne reference sample. Scanning electron microscopy analysis of the char morphology supported these findings, indicating the effectiveness of the intumescent FR system. Infrared spectra of the char residues and pyrolysis gaseous products were obtained to gain insights into the flame‐retardant mechanism of the different systems.
CHARGE syndrome with both primary and secondary hypogonadism
Authors: Yoshida Yuki , Ogawa Soichiro , Meguro Satoru , Onagi Akifumi , Tanji Ryo , Matsuoka Kanako , Hoshi Seiji , Hata Junya , Sato Yuichi , Akaihata Hidenori , Kataoka Masao , Uemura Motohide , Kojima Yoshiyuki 
Published: February 2024

IntroductionCHARGE syndrome is a rare disorder that causes congenital abnormalities in multiple organs, including secondary hypogonadism. We report, herein, a unique case of CHARGE syndrome with both primary and secondary hypogonadism and discuss the possible causes and pathogenesis in this patient.Case presentationA 15‐year‐old boy with delayed secondary sexual characteristics and non‐palpable testes was referred to our hospital. Physical examination and detection of a chromodomain‐helicase‐deoxyribonucleic acid‐binding protein 7 gene mutation confirmed CHARGE syndrome. Hormone stimulation tests suggested both primary and secondary hypogonadism. Laparoscopic bilateral orchiectomy was performed because of decreased testosterone production and atrophy in both testes. Pathological examination of the testes revealed maturation arrest, germ cell neoplasm in situ, and decreased expression of steroid synthase.ConclusionThis appears to be the first report of CHARGE syndrome with both primary and secondary hypogonadism demonstrated in endocrinological and histological examinations.
Factors influencing the design and implementation of accessible e‐Government services in South Africa
Authors: Abdurahman Saleem , Kabanda Salah 
Published: February 2024

AbstractAs governments embark on providing their services online (e‐Government services), it is imperative for them to ensure that these services remain accessible to all online users. Prior studies have demonstrated that providing accessible online services remains a challenge for most governments, and more so for developing countries. This study seeks to identify and better understand the factors influencing the design and implementation of accessible e‐Government services. The study employed qualitative semi‐structured interviews in order to collect primary data from twelve government employees working as developers, designers, business analysts, and the management team. The data were analyzed using thematic analysis. This study identifies two key factors influencing the design and implementation of accessible e‐Government services, namely: organizational structures and stakeholder supporting structures. Furthermore, the findings explain how these factors affect the current practices of designing and implementing accessible e‐Government services. Four practices in use were recognized as instrumental in the design and implementation of accessible e‐Government services. These are: (i) championing accessibility; (ii) adoption of an omni‐channel approach, as well as digital learning and awareness; (iii) development of inhouse guidelines and best practices, as well as support for developing assistive technologies; (iv) and lastly, reflective practices. The study discusses the implications of these findings for future studies.
Impacts of microplastics on terrestrial plants: A critical review
Authors: Sun Xiaoqi , Withana Piumi Amasha , Palansooriya Kumuduni Niroshika , Vithanage Meththika , Yang Xiao , Lee Sang‐Ryong , Bank Michael S. , You Siming , Ok Yong Sik 
Published: February 2024

AbstractMicroplastic (MP) pollution is an important environmental problem owing to its widespread use, long residence time, and overall persistence. MPs threaten the health of humans, animals, and plants. However, studies on the effects of MPs on terrestrial plants are less common compared to those conducted in aquatic systems. This review discusses the sources of MPs in terrestrial ecosystems, their effects on C and N cycling in soils, and the impact of MPs on terrestrial plants, and focuses on plant growth and the potential risks to human health. MPs affect plants and their performance by altering soil structure, microbial activity, nutrient immobilization, transporting contaminants, and causing direct toxicity. Chemicals, such as plasticizers, additives, and colorants, in MPs may negatively affect ecosystems and their inhabitants, and MPs may interact with a wide array of pollutants, including pesticides, heavy metals, and antibiotics. These impacts vary as a function of soil type, plant species, and MP type. Future research efforts should focus on interaction complexity, uptake mechanisms, and impacts on plants at multiple spatiotemporal scales, while concurrently considering their effects on food chains and human health.
Prenatal arsenic exposure alters keratinocyte stem cell fate through persistent activation of IGF2R‐MAPK cascade leading to aggravated skin carcinogenesis in mice offspring
Authors: Chauhan Anchal , Gangopadhyay Siddhartha , Sharma Vineeta , Singh Sukhveer , Koshta Kavita , Singh Dhirendra , Ansari Kausar M. , Srivastava Vikas 
Published: February 2024

AbstractChronic exposure to arsenic (As) promotes skin carcinogenesis in humans and potentially disturbs resident stem cell dynamics, particularly during maternal and early life exposure. In the present study, we demonstrate how only prenatal arsenic exposure disturbs keratinocyte stem cell (KSC) conditioning using a BALB/c mice model. Prenatal As exposure alters the normal stemness (CD34, KRT5), differentiation (Involucrin), and proliferation (PCNA) program in skin of offspring with progression of age as observed at 2, 10, and 18 weeks. Primary KSCs isolated from exposed animal at Day‐2 showed increased survival (Bax:Bcl‐xL, TUNEL assay), proliferation (BrdU), and differentiation (KRT5, Involucrin) potential through the activation of pro‐carcinogenic IGF2R‐MAPK cascade (IGF2R‐G(α)q‐MEK1‐ERK1/2). This was associated with reduced enrichment of histone H3K27me3 and its methylase, EZH2 along with increased binding of demethylase, KDM6A at Igf2r promoter. Altered KSCs conditioning through disturbed Igf2r imprint contributed to impaired proliferation and differentiation and an aggravated tumor response in offspring.