bluuebunny/crossref_metadata_2025_split huggingface dataset:
From Niches to Global Value Chains: The Role of Firms' Collaborative Strategies in the Bioeconomy
Authors: Ayoub Martina , Befort Nicolas , Matt Mireille 
Published: December 2024

ABSTRACTThe bioeconomy is expected to carry out the transition towards a bio‐based economy thanks to the transformation of petrochemical and fossil fuel value chains. Nevertheless, bio‐based innovations fail to overcome the hurdle of commercialisation and appropriation. This paper offers a renewed understanding of this problem by combining the niche‐to‐regime transition literature with the global value chain literature. The article hypothesises that to overcome the challenge of commercialisation and appropriation, bio‐based innovations need to break out of their sociotechnical niches and integrate global value chains (GVCs). To achieve this, niche players and lead firms in GVCs need to collaborate together. Using the case of microalgae, we theorise a time‐sensitive typology of collaborations according to the three phases mapped around innovation development from emergence to diffusion and commercialisation. This study highlights that the type of collaboration to adopt depends on the level of development of an innovation, suggesting that the study of collaborations as diffusion and commercial strategy deserves further attention in transition studies and GVCs literature.
Smile or Not Smile: The Effect of Virtual Influencers' Emotional Expression on Brand Authenticity, Purchase Intention and Follow Intention
Authors: Jiang Kan , Qin Meilian , Deng Dejun , Zhou Dailan 
Published: December 2024

ABSTRACTVirtual influencer (VI) has become a new tool for brand promotion. The existing researches mainly focus on VI's external feature cues, such as identity, appearance, and sensory factors. In addition to carefully curated images, VI can also display emotions like a human influencer. Emotional expression as a non‐verbal social cue, is a key factor influencing consumers. This research focuses on VI's emotional cues and their impact on consumers' behavioral intentions. Based on emotional contagion theory (ECT) and elaboration likelihood model (ELM), this paper discusses the emotional contagion effect of VI emotional display (smiling vs. non‐smiling) and its matching effect with brand stereotypes. The results of three online experiments (N = 691) show that: firstly, VI's smiling emotion has a stronger primitive emotional contagion. Secondly, VI emotional expression has a positive impact on brand authenticity, purchase intention, and follow intention through affective empathy and cognitive empathy. Finally, this study found that VI's smile does not always produce a more positive effect than not smiling. In advertising situations that highlight brand competence, VI without a smile is more persuasive. Our results provide a new explanation mechanism for the influence of VI emotional expression on consumers' behavioral intention and provide a new perspective and advertising strategy for VI marketing practice.
Vitamin D and Endometriosis: Is There a Mechanistic Link?
Authors: Jennings Bethany Scout , Hewison Martin 
Published: December 2024

ABSTRACTEndometriosis is a prevalent chronic gynaecological disorder, but its cause is still unclear, and both genetic and environmental factors may contribute disease aetiology. Prominent amongst the latter is vitamin D which can be obtained either by the action of sunlight on skin or from dietary sources. Serum levels of the main circulating form of vitamin D, 25‐hydroxvitamin D (25(OH)D), have been reported to be inversely correlated with endometriosis, suggesting that vitamin D‐deficiency may be a risk factor for the disease. Crucially, the active form of vitamin D, 1,25‐dihydroxyvitamin D (1,25(OH)2D) is known to exert many functions beyond its established role in the endocrinology of mineral homoeostasis and prevention of rickets. Several of these extra‐skeletal effects of 1,25(OH)2D may impact the risk and progression of endometriosis. The following review details the studies that have assessed associations between vitamin D status/supplementation and endometriosis severity and disease progression, but also describes the mechanistic targets for 1,25(OH)2D in endometriosis with specific reference to immunomodulatory responses and effects on angiogenesis. Endometriosis is an under‐reported health issue with poor non‐invasive options for diagnosis. Given that vitamin D‐deficiency may trigger or exacerbate key pathophysiological responses linked to endometriosis, analysis of vitamin D status in women may provide an alternative risk marker for endometriosis. Treatment options for endometriosis are also limited and the review will also consider whether vitamin D supplementation has a role in the management of endometriosis, either in prevention or treatment.
Mettl14 and Mettl3 Work Cooperatively to Regulate Retinal Development
Authors: Chen Dan , Xin Yanling , Guo Jingyi , Chen Shuyi 
Published: December 2024

ABSTRACTN6‐methylenadenosine (m6A) modification, the most abundant epitranscriptomic modification in eukaryotic mRNAs, has been shown to play crucial roles in regulating various aspects of mRNA metabolism and functions. In this study, we applied the Cre‐Loxp conditional knockout system to investigate the role of the core components of the m6A methyltransferase complex, METTL14 and METTL3, in retinal development. Our results showed that the double absence of Mettl14 and Mettl3 caused structural disturbance in the retina and prolonged the proliferation activity of retinal progenitor cells. Interestingly, the deletion of Mettl14 and Mettl3 did not affect the generation of various retinal cells, but severely disrupted their distribution. In addition, double deletion of Mettl14 together with Mettl3 caused a stronger phenotype than did single deletion of Mettl14. In conclusion, our study demonstrated that Mettl14 and Mettl3 work cooperatively to regulate retinal development.
Significant Reduction of Anode Reaction Overpotential in Alkaline Water Electrolysis by Ultrathin NiFe‐Layered Double Hydroxide in Ethanol‐Added Electrolyte
Authors: Wang Huiying , Huo Mengtian , Liang Yu , Qin Kaichi , Li Qianyu , Liu Wei , Xing Zihao , Chang Jinfa 
Published: December 2024

AbstractElectrochemical alkaline water electrolysis (AWE) is regarded as an effective method for producing high‐purity hydrogen without relying on platinum group metal (PGM) as catalyst. However, the oxygen evolution reaction (OER), as the anode half‐reaction, involves a four‐electron transfer process with slow kinetics, which significantly reduces the overall reaction efficiency of AWE. Although highly efficient catalysts can accelerate the OER rate, the high overpotential of the anode still remains an important factor hindering AWE. Herein, ultrathin NiFe‐layered double hydroxide (U‐NiFe LDH) nanosheet arrays were synthesized and used as anode catalysts due to their robust structure, excellent flexibility, and effective interlayer anion compensation. Only 250 mV of overpotential was required for OER to reach a current density of 10 mA cm−2 in 1 M KOH. Incorporating the additive ethanol into KOH electrolyte further reduces the required overpotential of AWE to 114 mV. The anode overpotential could be decreased by 130 mV at a current density of 100 mA cm−2 in a three‐electrode electrolysis system with U‐NiFe LDH as the anode. This work provides a possible approach for the development of low‐energy and green AWE technology for electrocatalytic hydrogen production.
Synthesis and Properties of Donor–Acceptor‐Type Cyclobisbiphenylenecarbonyls
Authors: Nishimoto Emiko , Ikai Tomoyuki , Shinokubo Hiroshi , Fukui Norihito 
Published: December 2024

AbstractThe scalable synthesis of figure‐eight π‐systems is challenging for the conventional bottom‐up approach. We have recently reported that the oxidative inner‐bond cleavage of commercially available dibenzo[g,p]chrysene efficiently furnishes a figure‐eight π‐acceptor, cyclobisbiphenylenecarbonyl (CBBC), in large quantity. Furthermore, its donor–acceptor‐type derivative with four N‐carbazolyl substituents at the meta‐positions of the carbonyl groups exhibited thermally activated delayed fluorescence (TADF) and circularly polarized luminescence (CPL) with a high |gCPL| value of 1.0×10−2. Herein, we synthesized nine donor–acceptor‐type CBBC derivatives by changing the donor substituents and their positions. Compared to previously reported carbazole‐substituted CBBC, tetramethylcarbazole‐ and 9,10‐dihydro‐9,9‐dimethylacridine‐substituted derivatives exhibited enhanced emission quantum yields and accelerated reverse intersystem crossing. The functionalization of the para‐positions of the carbonyl groups resulted in better tunability of emission colors rather than meta‐functionalization, whose color variation ranges from light blue to red. The incorporation of bulky substituents at the meta‐positions of the carbonyl groups induced the conformational change to a distorted ring structure. Investigation of the substituent effect on the chiroptical properties revealed that the introduction of less bulky donor units such as carbazole at the meta‐positions of the carbonyl groups is effective in achieving high |gCPL| values.
A new class of asymptotic maximin distance Latin hypercube designs
Authors: Xia Xinxin , Li Wenlong , Li Pengnan 
Published: December 2024

AbstractMaximin distance Latin hypercube designs have been widely used in computer experiments because they can achieve one‐dimensional stratification and full‐dimensional space‐filling properties. In this article, we propose a new method for constructing a class of Latin hypercube designs that can accommodate many columns. We show that the resulting designs are asymptotically optimal under the maximin distance criterion, and enjoy a large proportion of low‐dimensional stratification properties that strong orthogonal arrays should have. In addition, the proposed method can be used to construct a class of asymptotically optimal sliced maximin distance Latin hypercube designs. These designs are well suited to computer experiments due to their good space‐filling properties.
The colour Technology of Under the Caribbean (Hans Hass, 1954) Through a Comparison of Original Film Sources and Archival Documents
Authors: Clemens Rita 
Published: December 2024

ABSTRACTHans Hass' Under the Caribbean (1954, LI, AT, DE) was one of the world's first underwater colour films. As such, it provides a unique case study and raises interesting questions about the film's colour technology, combining 35 mm chromogenic negative and 16 mm Kodachrome processes with Technicolor imbibition printing in an interweaving of colour processes. Research into the vast amount of Hass' film material held at the Filmarchiv Austria has not yet revealed any of the original Kodachrome footage of this film nor its opticals. However, based on archival documents, it was possible to confirm and reconstruct the workflow Technicolor adopted for this film. Investigating the production history of Under the Caribbean not only provides film historical knowledge of this specific film, but also film technical insights into the production of other films of the early 50s, that also combine several colour processes. This research will be presented together with a discussion of the restoration possibilities offered by the source material, that is, the cut negative and several release prints.
A DFT Based Screening of the Electronic, Structural, Transport, Thermodynamic, and Optical Features of Potassium‐based K2InAsCl6 Double Perovskites for Renewable Energies
Authors: Ain Quratul , Munir Junaid , Murtaza Hudabia , Aldwayyan Abdullah S. , Ghaithan Hamid M. , Ahmed Abdullah Ahmed Ali , Qaid Saif M. H. 
Published: December 2024

AbstractNowadays, double perovskite materials are playing an exceptional role in the field of optoelectronics, spintronics, and photovoltaics as they exhibit outstanding characteristics. In the present work, a comprehensive examination of the mechanical, electrical, optical, thermal, and structural characteristics of the K2InAsCl6 double perovskite complex is conducted by using the density functional theory via Wien2k software. The K2InAsCl6 exhibits structural, thermodynamic, and mechanical stability which is evaluated through several parameters. The K2InAsCl6 possess a direct band gap of 0.5 eV which is also endorsed by the total density of states (DOS). The K2InAsCl6 exhibits ductile character and longitudinal waves are found to be predominate over transverse waves. Furthermore, the optical analysis indicates that the material's intricate electrical configuration is suitable for significant optical activity across the visible spectrum. The versatility of K2InAsCl6 is well‐proven by its robust thermal and mechanical properties. It exhibits excellent ZT value (0.92) at room temperature which confirms its potential for green energy applications.
Crystallization of α and β Polymorphs of Para Aminobenzoic Acid from Mixed Solvents by Slow Evaporation Method
Authors: Mathew Ansu , Madhesh Madhumitha , Karuppannan Srinivasan 
Published: December 2024

AbstractPara aminobenzoic acid (p‐ABA), a well‐known pharmaceutical material with a challenging polymorphic nature, is chosen for study in this paper. The material has four reported polymorphs, containing two solution forms (α and β), a vapor form, and a high‐pressure form. The solution‐grown forms α and β are experimentally grown using mixed solvents of water and isopropyl alcohol with nine different mixing compositions at temperatures of 298, 303, and 308 K. The solubility of the commercially available p‐ABA is calculated gravimetrically, and the polymorphic crystals are grown using the slow solvent evaporation method for all the mixing ratios at different temperatures. A ternary diagram constructed on the solubility of p‐ABA in mixed solvents gives an insight into the nucleation nature of two polymorphs. To understand the nature of nucleation and growth of two forms of p‐ABA, an in situ microscopic study is carried out, and the grown crystals are characterized using powder X‐ray diffraction analysis and differential scanning calorimetry. This also confirmed that the grown crystals are two solutions grown polymorphs of para aminobenzoic acid, both belonging to monoclinic systems with P21/n space group.
Acute effects of supramaximal loaded back squat activation on countermovement jump performance, muscle mechanical properties, and skin surface temperature in powerlifters
Authors: Perenc Dawid , Stastny Petr , Urbański Robert , Krzysztofik Michał 
Published: December 2024

AbstractThis study aimed to investigate the effects of performing either eccentric‐only (ECC) or eccentric‐concentric (ECC‐CON) back squats (BS) with a supramaximal load on countermovement jump (CMJ) performance. Changes in front thigh skin surface temperature and mechanical properties (oscillation frequency and stiffness) of the vastus lateralis were also examined. Fourteen male powerlifters participated in this study (age: 22.5 ± 2.3 years, body weight: 84.2 ± 11.1 kg, height: 178 ± 7 cm, training experience: 5.4 ± 1.6 years, BS one‐repetition maximum [1RM]: 177 ± 22.8 kg). The experimental sessions included 2 sets of 2 BS at 110% 1RM of either ECC‐CON (load distributed by half on the barbell [55%] and on weight releasers [55%]) or ECC (only eccentric phase of BS) and CTRL with no CA applied. CMJ performance, mechanical properties, and skin surface temperature were measured before and at the third, sixth, ninth, and 12th min. After each protocol, only the ECC‐CON condition led to a significant increase in CMJ height after individual optimal rest time compared to pre‐CA (38.1 ± 5.2 vs. 39.8 ± 5.0 cm; p = 0.003; effect size [ES] = 0.32; Δ = 4.9 ± 5.0%) with a significant rise in skin surface temperature (32.98 ± 1.24 vs. 33.69 ± 0.96°C; p = 0.006; ES = 0.62; Δ = 2.2 ± 2.6%) and no significant changes in mechanical properties of the vastus lateralis. The ECC‐CON condition led to a significant acute improvement in CMJ height and an increase in front thigh skin surface temperature among powerlifters. The ECC‐CON supramaximal lower limb PAPE protocol should be effectively used among males representing high levels of lower limb muscle strength (>2 × body mass).
Distributions of Trace Elements and Their Relationships With Heavy Minerals in Some Chinese Low‐Rank Coals
Authors: Jin Peng , Tian Chong , Huang Yuxuan , Gong Bengen , Wang Xiaochuan 
Published: December 2024

ABSTRACTTo better understand the properties of low rank coals, especially the correlation information between the trace elements (TEs) and minerals, four typical low‐rank coals in China, namely Xiaolongtan (XLT), Shenbei (SB), Huolinhe (HLH), and Shengli (SL) were quantitatively studied for their mineralogical characteristics and TEs distributions, to provide a basis for proposing methods to remove impurities from low‐rank coal and reduce environmental pollution. Results show that light mineral fractions (LMFs, ρ < 2.89 g/cm3) are more than 90% (wt.%) in the four low‐rank coals with clay minerals dominating in composition. Minerals in the heavy mineral fractions (HMFs, ρ > 2.89 g/cm3) vary from coal to coal. Rare heavy mineral particles including zircon, sphalerite, and gypsum are observed in HMFs from four low‐rank coals. Minerals are the major carriers of the TEs, and different kinds of minerals carry different kinds of TEs. TEs such as Cu, Zn, Tl, As, Cd, Sn, Ni, Sb, Pb have an affinity to occur in pyrite; Gd, Sr, Ba, Eu, and Bi are associated with barite; Cr, Mo are abundant in Fe‐bearing carbonate.
Effect of Proppant on Seepage and Heat Transfer Characteristics in Fractured Granite of Hot Dry Rock Geothermal Systems
Authors: Dong Xu , Wu Yu , Li Decheng , Hao Yang , Geng Haozhe 
Published: December 2024

ABSTRACTThe seepage and heat transfer characteristics of fractured rock are critical issues in hot dry rock exploitation. This paper investigates the effects of proppant on the seepage characteristics under different conditions through seepage experiments on split granite fractures. Subsequently, seepage–heat transfer coupling mechanisms in fractured granite are elucidated through numerical simulations. The results indicate that the flow rate increases in fractures with large crack widths as temperature rises, while in fractures with small crack widths, an increase in temperature reduces the flow rate. Additionally, normal constraint force increases with rising confining pressure, consequently reducing the flow rate. Extension of seepage paths is favored by higher injection pressures, thereby improving flow rates. The inclusion of proppant effectively supports the fracture, expanding its width and significantly increasing the flow rate. Furthermore, injection into the reservoir forms a low‐temperature cooling zone, which gradually advances towards the outlet over time. Initially, the outlet temperature and extract heat rate remain stable before decreasing almost linearly. Proppant filling accelerates the heat transfer rate and significantly boosts the initial extract heat rate; however, it also leads to a faster decline in reservoir heat quantity, resulting in a subsequent extract heat rate lower than that of unfilled fractures. These findings underscore the importance of balanced extract heat efficiency and enhanced geothermal system reservoir longevity for the sustained exploitation of geothermal energy.
Reliability analysis and design of soil slopes considering spatial variability under rainfall infiltration
Authors: Zhu Wen‐Qing , Zhao Shuang‐Lin , Han Han , Liu Lei‐Lei , Zhang Wen‐Gang , Zhang Shao‐He , Cheng Yung‐Ming 
Published: December 2024

AbstractSlope reliability analysis is a critical aspect of geotechnical engineering, particularly under conditions of rainfall infiltration, where the spatial variability of soil parameters can significantly affect the reliability of slopes. Traditional methods like Monte Carlo simulation are often computationally intensive, severely challenging the design of cutting slopes considering the spatial variability of multiple soil parameters. To address this challenge, this study proposes a convolutional neural network (CNN)‐based surrogate model to efficiently assess the reliability of unsaturated soil slopes. The CNN model is trained to establish an implicit relationship between the random field inputs of soil parameters and the corresponding slope stability outcomes, enabling rapid calculation of the probability of failure (Pf) under varying conditions. The results indicate that as rainfall intensity increases, the Pf rises. For the same slope cutting distance, a greater slope cutting angle leads to a higher Pf. Similarly, for the same slope cutting angle, increasing the slope cutting distance results in a higher Pf; and the impact of slope cutting distance on slope reliability is more significant than that of slope cutting angle. Additionally, for various rainfall conditions and slope cutting scenarios, the CNN‐based surrogate model is integrated into the full probability reliability design method, and a design response surface is used to establish the relationship between design variables and reliability responses. It is found that the proposed approach can efficiently evaluate the reliability of all design schemes. A strategy for determining the optimal slope cutting scheme is finally provided as practical guidance to meet the target reliability.
A High‐Order Finite Element Method for Solving Two‐Dimensional Fractional Rayleigh–Stokes Problem for a Heated Generalized Second Grade Fluid
Authors: Ngondiep Eric 
Published: December 2024

ABSTRACTThis article develops a high‐order finite element scheme in an approximate solution of the two‐dimensional Rayleigh–Stokes problem for a heated generalized second‐grade fluid with fractional derivatives. The constructed approach consists of approximating the exact solution by interpolation in time while the finite element technique is used in the approximation of the spatial derivatives. This combination is simple and easy to implement. The stability and error estimates of the developed strategy are deeply analyzed in the ‐norm. The theoretical studies suggest that the proposed method is unconditionally stable, convergent with order , faster, and more efficient than a broad range of numerical schemes discussed in the literature for the considered time fractional partial differential equation. Some numerical examples are carried out to show the applicability and viability of the new algorithm.