bluuebunny/crossref_metadata_2025_split huggingface dataset:
Nacre‐Inspired Biomineralized Mesh toward Scalable and Robust Oil–Water Separation with High Efficiency
Authors: Yu Shaokang , Chen Wei , Wang Yixuan , Zhao Ran , Zang Ruhua , Gu Jianmin , Meng Jingxin , Wang Shutao 
Published: July 2021

AbstractThe leakage of offshore crude oil and the discharge of industrial oily wastewater always bring great harm to human health and ecological environment. To solve these problems, advanced interfacial materials for oil–water separation have attracted wide attentions. However, most of these materials still have several disadvantages including complicated preparation process, low separation efficiency, and easy damage. Herein, a nacre‐inspired biomineralized mesh (NBM) with underwater superoleophobicity shows scalable and robust oil–water separation with high efficiency. Through the combination of dip coating and biomineralization, the NBM is readily scalable fabrication. Similar chemical components and micro‐nanostructures to the natural nacre endow the NBM with good mechanical properties. Furthermore, the NBM can resist to sand impingement and knife scratch along high efficiency of oil–water separation (≈99.9%) even after repeated use for 50 times, which may come from its high hardness and Young's modulus. Therefore, this study provides new insights for the scalable development of oil–water separation materials with high efficiency and robustness.
Importance of Long‐Range Channel Sr Displacements for the Narrow Emission in Sr[Li2Al2O2N2]:Eu2+Phosphor
Authors: Bouquiaux Julien , Poncé Samuel , Jia Yongchao , Miglio Anna , Mikami Masayoshi , Gonze Xavier 
Published: July 2021

AbstractThe recently discovered Sr[Li2Al2O2N2]:Eu2+red phosphor, candidate for the next generation of eco‐efficient white light‐emitting diodes, exhibits excellent emission spectral position and exceptionally small linewidth. It belongs to the UCr4C4‐structure family of phosphors containing many potential candidates for commercial phosphors, whose small linewidth, tentatively ascribed to the high‐symmetry cuboid environment of the doping site, has drawn the attention of researchers in the last five years. Density functional theory, ΔSCF method, and configuration coordinate models (CCM) are used to provide a complete characterization of this material. Using a multi‐dimensional CCM, an accurate description of the coupling of the vibronic structure with the electronic 5d→4f transition is obtained, including the partial Huang–Rhys factors and frequency of the dominant modes. It is shown that, in addition to the first‐coordination shell cuboid deformation mode, low‐frequency phonon modes involving chains of strontium atoms along the tetragonal axis shape the emission linewidth in Sr[Li2Al2O2N2]:Eu2+. This finding sheds new light on the emission properties of UCr4C4‐structure phosphors, possessing similar Ca/Sr/Ba channel. The approach provides a robust theoretical framework to systematically study the emission spectra of such Eu‐doped phosphors, and predict candidates with expected similar or even sharper linewidth.
Impacts of duo‐regional generic advertising of social media on consumer preference
Authors: Chen Xuqi , Heng Yan , Gao Zhifeng , Jiang Yuan 
Published: July 2021

AbstractGeneric advertising is commonly used to market agricultural products by groups of producers to increase the overall demand. With the popularity of social media, a cheaper and convenient alternative platform has been created for generic advertising. Despite social media advertising gaining success in some areas, little is known about whether this success can be duplicated to agricultural products. Questions also remain about potential benefits to producers when multiple organizations conduct generic advertising for the same or similar products. This study investigates the own and spillover effect of duo‐regional generic advertising of two grower organizations' (Florida and California) social media on consumer preference for fresh produce with different origins. Overall, a significant increase in willingness‐to‐pay is found for the products being promoted by social media, indicating a strong own effect of duo‐regional generic advertising. A substantial spillover effect of generic advertising is also found for social media conducted by California and Florida on domestic and imported products, correspondingly. Mexico receives a free‐rider benefit from the generic advertising provided by Florida social media. The results shed light on the industries that try to promote food products using social media and inform policy decisions on how to utilize generic advertising better to expand the market. [EconLit Citations: D10, D12].
The association between food outlet accessibility and market competition to household food expenditures: Empirical evidence from the convenience store industry in Taiwan
Authors: Chang Hung‐Hao , Lee Brian 
Published: July 2021

AbstractMany studies document the importance of food outlet accessibility on household food expenditures. However, the role of market competition between commercial food outlets garners little attention in these studies. This paper provides the first evidence distinguishing between the association between food outlet accessibility and market competition among commercial food outlets on household food expenditures. Using administrative profiles on convenience stores and nationally representative repeated cross‐sectional household surveys from 2003 to 2016, we find that inter‐brand competition between convenience store chain brands is associated with total food, food at home, and food away from home expenditures in Taiwan. In contrast, food outlet accessibility has no significant correlation with household food expenditures after controlling for inter‐brand competition. [EconLit citations: Q13, L22].
Mobile money adoption, input use, and farm output among smallholder rice farmers in Ghana
Authors: Abdul‐Rahaman Awal , Abdulai Awudu 
Published: July 2021

AbstractFinancial exclusion continues to be a major challenge to smallholder farmers' participation in agricultural value chains in developing countries. Digitizing procurements and other forms of transactions using mobile money technology among value chain actors is essential for ensuring financial inclusion and enhancing agricultural value chain transformation. This study examines the factors influencing the adoption of mobile money technology and the impact of the technology on production input use and farm output, utilizing data from a cross‐sectional survey of smallholder rice farmers in northern Ghana. A linear regression with endogenous treatment effects method is employed to account for both observable and unobservable selection bias. The results reveal positive and significant marginal effect of mobile money technology on input use and farm output. Adopters of the technology applied 18% and 13% more fertilizer and herbicides, respectively than nonadopters. The output increased by about 4% for the adopters. The results also show that mobile money technology adoption, input use and farm output are significantly influenced by education, farmer‐based organization (FBO) membership, access to credit, input prices, and location fixed effects. Expansion of mobile technology networks, increased investment in education, credit facilities, and FBOs can be quite relevant in promoting the adoption of mobile money technology in Ghana. [EconLit citations: C34, C35, Q12, Q13]
Iron‐Catalyzed Cross‐Coupling of Propargyl Ethers with Grignard Reagents for the Synthesis of Functionalized Allenes and Allenols
Authors: Posevins Daniels , Bermejo‐López Aitor , Bäckvall Jan‐E. 
Published: July 2021

AbstractHerein we disclose an iron‐catalyzed cross‐coupling reaction of propargyl ethers with Grignard reagents. The reaction was demonstrated to be stereospecific and allows for a facile preparation of optically active allenes via efficient chirality transfer. Various tri‐ and tetrasubstituted fluoroalkyl allenes can be obtained in good to excellent yields. In addition, an iron‐catalyzed cross‐coupling of Grignard reagents with α‐alkynyl oxetanes and tetrahydrofurans is disclosed herein, which constitutes a straightforward approach towards fully substituted β‐ or γ‐allenols, respectively.
Nanoscale Advancement Continues—From Catalysts and Reagents to Restructuring of Reaction Media
Authors: Kashin Alexey S. , Ananikov Valentine P. 
Published: July 2021

AbstractComprehensive studies dedicated to the search for specific properties of matter at the micro‐ and nanoscales have greatly enriched the fields of chemistry and materials science. From the point of view of synthetic chemistry, discoveries in the field of nanoscale catalysis, in which the size effects of active centers are used to accelerate the reactions, are of particular importance. However, another approach for the promotion of chemical transformations based on the micro‐ or nanoconfinement of reacting molecules or even on the structuring of the reaction media as a whole is gaining interest as a highly valuable tool. Herein, we highlight the example of an increase in the efficiency of phenol alkylation and tert‐butylation of benzyl alcohol in reaction media based on ionic liquids by the creation of acidic microdomains in the presence of small molecule additives.
Funktionaler Schalter und Ethylgruppenbildung der Bakteriellen Polytrichastrensynthase aus Chryseobacterium polytrichastri
Authors: Hou Anwei , Goldfuss Bernd , Dickschat Jeroen S. 
Published: July 2021

AbstractEine erneute Untersuchung der Linaloolsynthase aus Chryseobacterium polytrichastri zeigte dessen Aktivität als Diterpensynthase, wodurch neben Wanju‐2,5‐dien und Thunbergol Polytrichastren A und Polytrichastrol A mit neuen Skeletten erhalten wurden. Der Enzymmechanismus wurde durch Isotopenmarkierungsexperimente und DFT‐Rechnungen untersucht, um eine ungewöhnliche Ethylgruppenbildung zu studieren. Rational ausgewählte Austausche von Residuen des aktiven Zentrums führten zu bedeutenden Funktionsänderungen und resultierten für I66F zur Produktion fünf weiterer neuer Verbindungen, einschließlich Polytrichastren B und Polytrichastrol B, während A87T, A192V und der doppelte Austausch A87T,A192V eine Produktverschiebung zu Wanju‐2,5‐dien ergaben.
Integrating Hydrogen Production and Transfer Hydrogenation with Selenite Promoted Electrooxidation of α‐Nitrotoluenes to E‐Nitroethenes
Authors: Chong Xiaodan , Liu Cuibo , Wang Changhong , Yang Rong , Zhang Bin 
Published: July 2021

AbstractDeveloping an electrochemical carbon‐added reaction with accelerated kinetics to replace the low‐value and sluggish oxygen evolution reaction (OER) is markedly significant to pure hydrogen production. Regulating the critical steps to precisely design electrode materials to selectively synthesize targeted compounds is highly desirable. Here, inspired by the surfaced adsorbed SeOx2− promoting OER, NiSe is demonstrated to be an efficient anode enabling α‐nitrotoluene electrooxidation to E‐nitroethene with up to 99 % E selectivity, 89 % Faradaic efficiency, and the reaction rate of 0.25 mmol cm−2 h−1 via inhibiting side reactions for energy‐saving hydrogen generation. The high performance can be associated with its in situ formed NiOOH surface layer and absorbed SeOx2− via Se leaching‐oxidation during electrooxidation, and the preferential adsorption of two ‐NO2 groups of intermediate on NiOOH. A self‐coupling of α‐carbon radicals and subsequent elimination of a nitrite molecule pathway is proposed. Wide substrate scope, scale‐up synthesis of E‐nitroethene, and paired productions of E‐nitroethene and hydrogen or N‐protected aminoarenes over a bifunctional NiSe electrode highlight the promising potential. Gold also displays a similar promoting effect for α‐nitrotoluene transformation like SeOx2−, rationalizing the strategy of designing materials to suppress side reactions.
Conservation of aquatic insects in Neotropical regions: A gap analysis using potential distributions of diving beetles in Cuba
Authors: Megna Yoandri S. , Pallarés Susana , Sánchez‐Fernández David 
Published: July 2021

Abstract

Human activities are an increasing threat to Neotropical freshwater ecosystems, with the potential extinction of thousands of aquatic species. Despite this, knowledge about the effectiveness of protected area networks in protecting aquatic insects in this biogeographical region is very limited.
Cuba supports the highest diversity of aquatic insects in the Antilles, with a large number of endemics.
A gap analysis was conducted to assess the effectiveness of the National System of Protected Areas of Cuba (NSPAC) in the conservation of Cuban diving beetles (family Dytiscidae). This involved considering the areas with the highest potential species richness, estimated by using species distribution models with three different approaches (MaxEnt, Random Forest and Support Vector Machine), and the known localities of endemic species.
The highest potential species richness of Dytiscidae in Cuba is predicted to occur in the low–medium altitude of the eastern mountain areas. Although most of these areas occur inside the NSPAC, several areas of potential high species richness are currently unprotected. It is recommended that sampling programmes are carried out in areas with high predicted species richness to validate the species distribution models.
The distribution of three Cuban endemic species (Copelatus barbouri, Desmopachria glabella and Celina cubensis) lies completely outside of the NSPAC. Despite their conservation interest as threatened endemic species, they are currently unprotected.
To improve the conservation of freshwater biodiversity in Cuba it is recommended that (i) the NSPAC network is extended to protect areas supporting endemic species and those with the highest potential species richness that are currently unprotected, and (ii) a whole‐catchment management approach, specifically to maintain natural flows, should be adopted, especially in the mountainous areas of eastern Cuba.
Effect of Schwann cell transplantation combined with electroacupuncture on axonal regeneration and remyelination in rats with spinal cord injury
Authors: Tan Chengfang , Yang Cheng , Liu Hui , Tang Chenglin , Huang Siqin 
Published: July 2021

AbstractAxonal impairment and demyelination after compressed spinal cord injury lead to serious neurological dysfunction. Increasing studies have suggested that Schwann cells (SCs) transplantation is a reliable, effective, and promising method for treating spinal cord injury. However, single SCs transplantation is insufficient to promote the full recovery of neurological function. Additional approaches are required to support SCs transplantation as a treatment for spinal cord injury. In the study, we investigated whether the combination of electroacupuncture (EA) and SCs transplantation was a reliable intervention for spinal cord injury. We found that rats in the combination group had significantly higher functional locomotor scores than those received single treatment. By immunostaining, we found EA can not only improve survival and proliferation of transplanted SCs but also inhibit SC apoptosis and block the formation of an astrocytic scar. Additionally, EA promoted regenerated axons extending “bullet‐shaped” growth cones into the lesion. Remarkably, EA can modify astrogliosis to promote axonal regeneration following SCs transplantation through inducing extension of astrocytic processes in the SCs graft interface. More importantly, the combination of SCs engraftment and EA can enhance corticospinal‐tract axonal regeneration and remyelination after spinal cord injury through up‐regulating neuregulin 1 type III in SCs and its downstream signaling mediators. Thus, it is concluded that SCs effectively promote axonal recovery after spinal cord injury when combined with EA stimulation. The experimental results have reinforced the theoretical basis of EA for its clinical efficacy in patients with spinal cord injury and merited further investigation for potential clinical application.
Farm‐to‐fire analysis of karanja biodiesel
Authors: Mishra Anurag , Thangaraj R Arjun , Mehta Pramod S. 
Published: July 2021

AbstractThis paper analyzes the energy and environmental impact of karanja biodiesel fuel from its production to its utilization (farm to fire), using a life‐cycle assessment method, and comparing it with its fossil diesel counterpart. For this purpose, the net energy ratio, the net energy gain, and the equivalent carbon dioxide (CO2) emission reduction are estimated considering the equivalent energy impacts and CO2 emissions of important input and output quantities. The expressions for estimating equivalent CO2 reduction in production to utilization process are obtained by considering the CO2 absorption capacity of the biodiesel plant. The effects of the eutrophication and acidification potential during the life cycle of the crop are also considered. A sensitivity analysis of the most influential parameters on net energy ratio and CO2 emission reduction is conducted. The analysis shows that the biodiesel yield from seeds and the yield of co‐products are the two critical parameters affecting the net energy ratio. Similarly, the equivalent CO2 emission reduction potential of the karanja biodiesel depends primarily on the brake thermal efficiency and energy equivalent CO2 emission of biodiesel fueled engine combustion. A techno‐economic evaluation of the production of karanja biodiesel for different plant sizes and cost‐recovery periods is also made. The economics of the production of karanja biodiesel, considering different plant sizes and cost recovery periods, suggests that the price of biodiesel decreased for a higher capacity biodiesel plant and a longer cost‐recovery period. Beside these factors, the price of feedstock remains a most significant component of cost estimates. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd
Promoters are key organizers of the duplication of vertebrate genomes
Authors: Brossas Caroline , Duriez Bénédicte , Valton Anne‐Laure , Prioleau Marie‐Noëlle 
Published: July 2021

AbstractIn vertebrates, single cell analyses of replication timing patterns brought to light a very well controlled program suggesting a tight regulation on initiation sites. Mapping of replication origins with different methods has revealed discrete preferential sites, enriched in promoters and potential G‐quadruplex motifs, which can aggregate into initiation zones spanning several tens of kilobases (kb). Another characteristic of replication origins is a nucleosome‐free region (NFR). A modified yeast strain containing a humanized origin recognition complex (ORC) fires new origins at NFRs revealing their regulatory role. In cooperation with NFRs, the histone variant H2A.Z facilitates ORC loading through di‐methylation of lysine 20 of histone H4. Recent studies using genome editing methods show that efficient initiation sites associated with transcriptional activity can synergize over several tens of kb by establishing physical contacts and lead to the formation of early domains of DNA replication demonstrating a co‐regulation between replication initiation and transcription.
Adaptive local false discovery rate procedures for highly spiky data and their application RNA sequencing data of yeastSET4deletion mutants
Authors: Ramos Mark Louie , Park DoHwan , Lim Johan , Park Junyong , Tran Khoa , Garcia Eric Joshua , Green Erin 
Published: July 2021

AbstractChromatin dynamics are central to the regulation of gene expression and genome stability. In order to improve understanding of the factors regulating chromatin dynamics, the genes encoding these factors are deleted and the differential gene expression profiles are determined using approaches such as RNA sequencing. Here, we analyzed a gene expression dataset aimed at uncovering the function of the relatively uncharacterized chromatin regulator, Set4, in the model systemSaccharomyces cerevisiae(budding yeast). The main theme of this paper focuses on identifying the highly differentially expressed genes in cells deleted for Set4 (referred to as Set4mutant dataset) compared to the wild‐type yeast cells. The Set4mutant data produce a spiky distribution on the log‐fold changes of their expressions, and it is reasonably assumed that genes which are not highly differentially expressed come from a mixture of two normal distributions. We propose an adaptive local false discovery rate (FDR) procedure, which estimates the null distribution of the log‐fold changes empirically. We numerically show that, unlike existing approaches, our proposed method controls FDR at the aimed level (0.05) and also has competitive power in finding differentially expressed genes. Finally, we apply our procedure to analyzing the Set4mutant dataset.
A systematic review of empirical intraverbal research: 2015–2020
Authors: Jennings Adrienne M. , Vladescu Jason C. , Miguel Caio F. , Reeve Kenneth F. , Sidener Tina M. 
Published: July 2021

AbstractThe impact of Verbal Behavior (Skinner, 1957) on behavior analytic research, although not immediate, has steadily increased. Empirical investigations of verbal operants initially focused on mands and tacts, yet other operants such as intraverbals, echoics, and autoclitics have started to receive more attention. Aguirre et al. (2016) reviewed intraverbal research between 2005 and 2015. The results showed an increase in intraverbal research, with studies mostly focused on direct intraverbal training and emergent behavior. The authors noted the substantial increase in intraverbal studies assessing emergence, suggesting a subsequent brief review would be beneficial. The purpose of the current review was to replicate and extend Aguirre et al. In addition to analyzing publication trends and research emphasis, we also identified and quantified the skill sets of participants, the method and components of training, and additional procedural details. The findings show a continued increase in intraverbal research, with empirical evidence supporting prerequisite skills.
Building siRNAs with Cubes: Synthesis and Evaluation of Cubane‐Modified siRNAs
Authors: Hammill Matthew L. , Salim Lidya , Tsubaki Kouta , Varley Andrew J. , Kitamura Mitsuru , Okauchi Tatsuo , Desaulniers Jean‐Paul 
Published: July 2021

AbstractCubane molecules hold great potential for medicinal chemistry applications due to their inherent stability and low toxicity. In this study, we report the synthesis of a cubane derivative phosphoramidite for the incorporation of cubane into small interfering RNAs (siRNAs). Synthetic siRNAs rely on chemical modifications to improve their pharmacokinetic profiles. However, they are still able to mediate sequence‐specific gene silencing via the endogenous RNA interference pathway. We designed a library of siRNAs bearing cubane at different positions within the sense and antisense strands. All siRNAs showed excellent gene‐silencing activity, with IC50 values ranging from 45.4 to 305 pM. Incorporating the cubane modification in both the sense and antisense strand led to viable duplexes with good biological activity. To the best of our knowledge, this is the first report of siRNAs bearing a cubane derivative within the backbone.