bluuebunny/crossref_metadata_2025_split huggingface dataset:
High thermal conductivity and excellent mechanical properties of liquid crystal co‐polyester based on hydron bond
Authors: Wu Yifei , Wu Kun , Xiao Fei , Jiao Enxiang , Shi Jun , Lu Mangeng 
Published: May 2023

AbstractHigh thermal conductivity liquid crystal polymer has become a hot topic in electronic device research. Herein, we introduce a series of thermotropic liquid crystals synthesized by diphenyl diol, m‐phthalic acid, and 5‐hydroxyisophthalic acid. The intermolecular forces are tuned by adjusting the ratio (0, 20%, 40%, 60%, 80%, 100%) of monomers containing hydrogen bond donors in copolymers. The formation and dissociation of hydrogen bonds are analyzed from the red shift and blue shift of infrared spectra at variable temperatures. The thermal conductivity is increased to 0.31 Wm−1 k−1. Meanwhile, its mechanical properties and thermal stability have improved significantly. A sharp increment of 2120% in tensile strength was observed, the maximum tensile strength is 17.39 MPa. While Young's modulus increased from 0.26 to 1.224 GPa. The increase in intermolecular forces is the main reason for this result. Moreover,X‐raysingle‐crystal diffraction, polarizing microscope, differential scanning calorimetry, and thermogravimetric analysis (TGA) were also analyzed to further explore the thermal conduction mechanism. The formation of hydrogen bonds makes the linear polymer chain segments undergo reversible cross‐linking, which affects their crystallization behavior and provides more thermal conduction pathways. By controlling the number of hydrogen bond donors to control the cross‐linking density, the thermal conductivity and mechanical properties can be greatly improved.
Design and synthesis of isosorbide‐based copolycarbonates with high transparency and low hygroscopicity for optical applications
Authors: Song Zhiqiang , Xu Fei , Wang Heng , Zhang Zhencai , Feng Mi , Zhang Yiwen , Yang Zhao , Xie Jingxue , Su Dan , Li Tao 
Published: May 2023

AbstractPoly(isosorbide carbonate) (PIC) is an example of the shift from fossil to bio‐based feedstocks in polymeric materials. However, the naturally high hygroscopicity of isosorbide may lead to the bad dimensional stability of its polymers, limiting its application. This work aims to develop a series of isosorbide‐based copolycarbonates by introducing hydrophobic groups, such as alkane chains and aromatic rings, into the polymer backbone via one‐pot melt polycondensation. As expected, the molecular structure and steric hindrance of the comonomer have a remarkable effect on the water absorption of the copolycarbonates. Among the comonomers, tricyclo[5.2.1.0(2,6)]decanedimethanol with an alkane skeleton bridge effectively reduces the saturation water absorption by 61% compared to PIC. The water absorption mechanism and kinetics of the copolycarbonates are investigated. Moreover, the incorporation of comonomers in PIC not only exhibits stronger hydrophobicity, but also significantly improves its optical properties. Copolycarbonates obtained have a light transmittance of 92% and a refractive index of 1.5394, which are higher than those of PIC, along with better thermal stability, flexibility, and lower glass transition temperature. This work provides a new strategy for the design of isosorbide‐based polycarbonates for use in optics.
Synthesis, characterization, photophysical and surface properties of poly(amino naphthalene) and its poly(azomethine) compound
Authors: Kaya İsmet , Akyüz Burçin , Özel Şahin 
Published: May 2023

AbstractIn this study, 8‐((4‐hydroxybenzylidene)amino)naphthalene‐2‐ol (ANAPSB) compound was synthesized from condensation reaction of 8‐amino‐2‐naphthol (ANAP) with 4‐hydroxybenzaldehyde and then ANAPSB and 8‐amino‐2‐naphthol were polymerized via oxidative polycondensation alkaline medium by H2O2 (35% aqueous solution) as oxidant at 70°C 14 h. The structures of compounds were confirmed by UV–Vis, 1H‐13C‐NMR and FT‐IR measurements. The surface morphologies of PANAP and PANAPSB were examined with SEM analyses. The electrochemical properties of 8‐amino‐2‐naphthol, poly(8‐amino‐2‐naphthol) (PANAP), ANAPSB and poly(8‐((4‐hydroxybenzylidene)amino)naphthalene‐2‐ol) (PANAPSB) were determined by cyclic voltammetry technique. The thermal properties of compounds were found by TG‐DTA analysis. The glass transition temperatures (Tg) of PANAP and PANAPSB were determined from DSC measurements. The Tg values of PANAP and PANAPSB were found to be 159 and 150°C, respectively. The Mn, Mw, Mp, Mz and PDI values of the PANAP and PANAPSB were calculated from gel permeation chromatography measurements. The optical and fluorescence properties of the compounds were determined by UV–Vis and fluorescence measurements, respectively. The optical band gap values of ANAP, PANAP, ANAPSB and PANAPSB were calculated as 3.12, 1.61, 2.79 and 1.57 eV, respectively.
Functionalization of graphene oxide with an ionic liquid (1‐butyl‐3‐methylimidazolium acetate): Preparation of epoxy‐based coating on carbon steel for anticorrosive applications
Authors: Dhongde Nikhil Rahul , Baranwal Prince Kumar , Rajaraman Prasanna Venkatesh 
Published: May 2023

AbstractAn anticorrosive organic coating of epoxy on carbon steel (CS) was modified with uniformly dispersed graphene oxide (GO) after functionalization with ionic liquid (FGO). The ionic liquid (IL) used was 1‐butyl‐3‐methylimidazolium acetate which possess higher solubility and the graphene oxide was prepared by improved Hummer's method. The successful grafting of IL on the GO was confirmed by various techniques including Fourier‐transform infrared spectroscopy, Raman, XPS, x‐ray diffraction, thermogravimetric analysis, BET, field emission scanning electron microscope, and fidle emission transmission electron microscope. The surface characterization studies revealed that uniform dispersion of FGO is achieved in the epoxy matrix. Further, electrochemical studies such as potentiodynamic polarization, and electrochemical impedance spectroscopy showed higher corrosion protection efficiency (~99%) against corrosive fluid (3.5 wt% NaCl solution). This approach may offer an easy, ecologically benign way to create a new candidate coating for the protection of CS.
A composite of biomass porous carbon supported g‐C3N4 by 2,4,6‐triaminopyrimidine modification for enhancing oxytetracycline removal
Authors: Ding Hekun , Zhang Qiongyue , Yang Xingjin , Feng Qingge , Wang Dongbo , Liu Zheng 
Published: May 2023

AbstractSince the traditional g‐C3N4 photocatalyst was severely affected by low charge transfer rates and light absorption capacity, which inevitably limited its application in environmental pollution treatment. Herein, mixing the 2,4,6‐triaminopyrimidine (TAP) doped melamine and biomass porous carbon (BPC), the TAP‐BPC/CN composite with desirable conductivity was synthesized by one step thermal condensation. That is, the carbon atom of TAP was used to partially replace the nitrogen atom of tri‐s‐triazine structure of g‐C3N4, and decreased the interlayer distance of graphite lamellar structure, then improved the electrical conductivity of the materials and suppressed the recombination of photogenerated carriers. At the same time, the incorporation of BPC also contributed to increase the active sites of the material and enhance the separation efficiency of photogenerated carriers. Furthermore, the formation of p‐n homojunction in TAP‐BPC/CN built the construction of an internal electric field at the interface, which induced the band bending and improved charge separation and transfer effectively. As a result, the sample of TAP‐BPC/CN exhibited an excellent adsorption and photocatalytic activities in the degradation of oxytetracycline (OTC). This research provides a new strategy for efficient photocatalysts with high absorption and photocatalysis in the antibiotic wastewater treatment.
Non‐maturing deposits modelling in a Ornstein‐Uhlenbeck framework
Authors: Marena Marina , Romeo Andrea , Semeraro Patrizia 
Published: May 2023

AbstractThis paper builds a multivariate Lévy‐driven Ornstein‐Uhlenbeck process for the management of non‐maturing deposits, that are a major source of funding for banks. The contribution of the paper is both theoretical and operational. On the theoretical side, the novelty of this model is to include three independent sources of randomness in a Lévy framework: market interest rates, deposit rates and deposit volumes. The choice of a Lévy background driving process allows us to model rare but severe events. On the operational side, we propose a procedure to include severe volume outflows with positive probability in future scenarios simulation, explaining its implementation with an illustrative example using Italian banking sector data.
Effect of chlorpyrifos and its metabolites on skeletal system development of chick embryo
Authors: Chandra Sekaran Swathi Priyadarshini , Thotakura Balaji , Jyothi Ashok Kumar , Manickam Subramanian , Chanemougavally Jayaprakash , Prabhu Kaliaperumal , Gopalan Dhandapani Hari 
Published: May 2023

AbstractResearch focusChlorpyrifos is an organophosphate insecticide used primarily to control pests on a variety of food and feed crops. Humans are directly or indirectly exposed to this pesticide through food, air, and occupation. The ill effects of chlorpyrifos on various organ systems of human has been widely documented, but less is known about its influence on human bones.AimTo analyze the effect of chlorpyrifos and its metabolites 3,5,6‐trichloro‐2‐pyridinol (TCPy) on the skeletal system of the chick embryo.Materials and MethodsFertilized chick eggs were exposed to different concentrations of chlorpyrifos and its metabolite 3,5,6‐TCPy on 1.5 days of incubation. The proximal phalanx of 18‐day‐old embryos was analyzed for defects in growth and ossification through histopathology, immunohistochemistry, angiogenesis assay, and gene expression study.ResultsDose‐dependent variations in developing bone of chick embryo were observed. Histochemical and histomorphometry studies of proximal phalanx showed increased in the growth plate length (F(9, 59) = 228.9509, p = .00001) with a reduction in the total length of the phalanx (F(9, 59) = 109.9905, p = .00001), decreased mineralization (F(9, 59) = 224.6872, p = .00001), decreased blood islands in the bone marrow (F(9, 59) = 7.7083, p = .0001) of chlorpyrifos, and 3,5,6‐TCPy‐exposed group. Significant downregulations in the expression patterns of the transcription factors, such as SOX9, RUNX2, and ALP, were also observed.ConclusionChlorpyrifos and its metabolite 3,5,6‐TCPy exposure alters the chondrogenesis in the growth plate cartilage of long bone in chick embryo. The pesticide and its metabolite also interfere in ossification.
Uncovering the brain‐wide pattern of synaptic input to vasopressin‐expressing neurons in the paraventricular nucleus of the hypothalamus
Authors: Woodson Jonathan , Bergan Joseph F. 
Published: May 2023

AbstractArginine vasopressin (AVP) is a neuropeptide critical for the mammalian stress response and social behavior. AVP produced in the hypothalamus regulates water osmolality and vasoconstriction in the body, and in the brain, it regulates social behavior, aggression, and anxiety. However, the circuit mechanisms that link AVP to social behavior, homeostatic function, and disease are not well understood. This study investigates the circuit configurations of AVP‐expressing neurons in the rodent hypothalamus and characterizes synaptic input from the entire brain. We targeted the paraventricular nucleus (PVN) using retrograde viral tracing techniques to identify direct afferent synaptic connections made onto AVP‐expressing neurons. AVP neurons in the PVN display region‐specific anatomical configurations that reflect their unique contributions to homeostatic function, motor behaviors, feeding, and affiliative behavior. The afferent connections identified were similar in both sexes and subsequent molecular investigation of these inputs shows that those local hypothalamic inputs are overwhelmingly nonpeptidergic cells indicating a potential interneuron nexus between hormone cell activation and broader cortical connection. This proposed work reveals new insights into the organization of social behavior circuits in the brain, and how neuropeptides act centrally to modulate social behaviors.
Diversity within olfactory sensory derivatives revealed by the contribution of Dbx1 lineages
Authors: Causeret Frédéric , Fayon Maxime , Moreau Matthieu X. , Ne Enrico , Oleari Roberto , Parras Carlos , Cariboni Anna , Pierani Alessandra 
Published: May 2023

AbstractIn vertebrates, the embryonic olfactory epithelium contains progenitors that will give rise to distinct classes of neurons, including olfactory sensory neurons (OSNs; involved in odor detection), vomeronasal sensory neurons (VSNs; responsible for pheromone sensing), and gonadotropin‐releasing hormone (GnRH) neurons that control the hypothalamic–pituitary–gonadal axis. Currently, these three neuronal lineages are usually believed to emerge from uniform pools of progenitors. Here, we found that the homeodomain transcription factor Dbx1 is expressed by neurogenic progenitors in the developing and adult mouse olfactory epithelium. We demonstrate that Dbx1 itself is dispensable for neuronal fate specification and global organization of the olfactory sensory system. Using lineage tracing, we characterize the contribution of Dbx1 lineages to OSN, VSN, and GnRH neuron populations and reveal an unexpected degree of diversity. Furthermore, we demonstrate that Dbx1‐expressing progenitors remain neurogenic in the absence of the proneural gene Ascl1. Our work therefore points to the existence of distinct neurogenic programs in Dbx1‐derived and other olfactory lineages.
Comparison of Two Manufacturing Processes of Daprodustat for Bioequivalence and Dissolution in Healthy Volunteers: A Randomized Crossover Study
Authors: Shaddinger Bonnie , Mahar Kelly M. , Sprys Mike , Andrews Susan M. , Chattoraj Sayantan , Israni Rubeen , Cobitz Alex 
Published: May 2023

AbstractDaprodustat, an orally bioavailable hypoxia‐inducible factor–prolyl hydroxylase enzyme inhibitor, has recently completed phase 3 clinical development for treating anemia of chronic kidney disease. Part A of this 2‐part, randomized, double‐blind, single‐dose, cross‐over study (NCT04640311) compared pharmacokinetic properties of a single oral dose of daprodustat 4 mg tablets manufactured via twin‐screw wet granulation (process 1) to 2 sets of 4 mg tablets manufactured via high‐shear wet granulation (process 2), to assess the impact of different dissolution profiles on pharmacokinetics. Part B assessed the bioequivalence of daprodustat tablets manufactured via process 1 with tablets manufactured via process 2 at 5 different dose strengths (1, 2, 4, 6, and 8 mg). In part A, mean plasma concentrations of daprodustat were comparable over a 24‐hour period despite differences in manufacturing processes and dissolution profiles. In part B, the 90% confidence intervals of the ratios of the least squared means for area under the concentration‐time curve and maximum observed plasma concentration fell within the 0.8–1.25 bioequivalence range for all doses, except for maximum observed plasma concentration at 8 mg. A prespecified sensitivity analysis jointly assessing all doses showed bioequivalence for all doses tested. No new safety concerns for daprodustat were identified.
Multivariate genomic selection models improve prediction accuracy of agronomic traits in soft red winter wheat
Authors: Winn Zachary J. , Larkin Dylan L. , Lozada Dennis N. , DeWitt Noah , Brown‐Guedira Gina , Mason Richard Esten 
Published: May 2023

AbstractUnivariate genomic selection (UVGS) is an important tool for increasing genetic gain and multivariate GS (MVGS), where correlated traits are included in genomic selection, which can improve genomic prediction accuracy. The objectives for this study were to evaluate MVGS approaches to improve prediction accuracy for four agronomic traits using a training population of 351 soft red winter wheat (Triticum aestivum L.) genotypes, evaluated over six site‐years in Arkansas from 2014 to 2017. Genotypes were phenotyped for grain yield, heading date, plant height, and test weight in both the training and test populations. In cross‐validations, various combinations of traits in MVGS models significantly improved prediction accuracy for test weight in comparison to a UVGS model. Marginal increases in predictive accuracy were also observed for grain yield, plant height, and heading date. Multivariate models which were identified as superior to the univariate case in cross‐validations were forward validated by predicting the advanced breeding nurseries of 2018 and 2020. In forward validation, consistent increases in accuracy were observed for test weight, plant height, and heading date using MVGS instead of UVGS. Overall, MVGS models improved prediction accuracies when correlated traits were included with the predicted response. The methods outlined in this study may be used to achieve higher prediction accuracies in unbalanced datasets over multiple environments.
What do firms say in reporting on impacts of climate change? An approach to monitoring ESG actions and environmental policy
Authors: Chou Christine , Clark Robin , Kimbrough Steven O. 
Published: May 2023

AbstractThis article focuses on two research questions arising from the 2010 U.S. Securities and Exchange Commission (SEC) Advisory on climate change reporting: (1) How does the discussion of climate change in SEC filings change after the Advisory? and (2) What are firms talking about when they talk about climate change? Findings were obtained from the 218,000 10‐K filings to the SEC during the 2000–2019 period. The study develops and applies text mining methodology based on extracting information from the “semantic associates” in the “neighborhoods” of indicative terms. On (1) it finds that climate change‐related reporting does increase substantially after the SEC guidance. On (2) a nuanced picture emerges. Firms with comparatively larger transition risks tend to discuss climate change comparatively more, focusing on regulation‐related topics. Firms exposed to the physical risks of climate change tend to discuss climate change somewhat less, focusing on meteorological topics. The results enrich our understanding regarding environmental policies and firms' behaviors regarding climate change. Theoretical and practical implications are provided.
Sensory impairment and beta‐amyloid deposition in the Baltimore longitudinal study of aging
Authors: Yesantharao Lekha , Cai Yurun , Schrack Jennifer A. , Gross Alden L. , Wang Hang , Bilgel Murat , Dougherty Ryan , Simonsick Eleanor M. , Ferrucci Luigi , Resnick Susan M. , Agrawal Yuri 
Published: May 2023

AbstractIntroductionBeta‐amyloid (Aβ) plaque deposition is a biomarker of preclinical Alzheimer's disease (AD). Impairments in sensory function are associated with cognitive decline. We sought to investigate the relationship between PET‐indicated Aβ deposition and sensory impairment.MethodsUsing data from 174 participants ≥55 years in the Baltimore Longitudinal Study of Aging, we analyzed associations between sensory impairments and Aβ deposition measured by PET and Pittsburgh Compound B (PiB) mean cortical distribution volume ratio (cDVR).ResultsThe combinations of hearing and proprioceptive impairment and hearing, vision, and proprioceptive impairment, were positively correlated with cDVR (β = 0.087 and p = 0.036, β = 0.110 and p = 0.018, respectively). In stratified analyses of PiB+ participants, combinations of two, three, and four sensory impairments (all involving proprioception) were associated with higher cDVR.DiscussionOur findings suggest a relationship between multi‐sensory impairment (notably proprioceptive impairment) and Aβ deposition, which could reflect sensory impairment as an indicator or potentially a risk factor for Aβ deposition.
Earthworms increase forest litter mass loss irrespective of deposited compounds – A field manipulation experiment in subtropical forests
Authors: Yang Junbo , Tian Kai , Lu Jingzhong , Kong Xiangshi , Li Qiang , Ye Rumeng , Zeng Xiaoyi , Cao Tingting , Hu Haijing , Ji Yanli , Tian Xingjun , Scheu Stefan 
Published: May 2023

AbstractEarthworms modulate carbon and nitrogen cycling in terrestrial ecosystems, but their effect may be compromised by the deposition of pollutants from industrial emissions. However, studies investigating how deposited compounds affect the role of earthworms in carbon cycling such as litter decomposition are lacking, although the interactions of earthworms and deposited compounds are important for understanding the impact of pollutants on ecosystems and the potential of earthworms in bioremediation. We performed a 365‐day in situ litterbag decomposition experiment in a deciduous (Quercus variabilis) and coniferous (Pinus massoniana) forest in southeast China. We manipulated nitrogen (N), sodium (Na), and polycyclic aromatic hydrocarbons (PAHs) as model compounds during litter decomposition with and without earthworms (Eisenia fetida). After one year, N, Na, and PAH all slowed down litter mass loss, with the effects of Na being the strongest. By contrast,E. fetidagenerally increased litter mass loss, and the positive effects were uniformly maintained irrespective of the type of compounds added. However, the pathways to how earthworms increased litter mass loss varied among the compounds added and the two forests studied. As indicated by structural equation modeling, earthworms mitigated the negative effects of deposited compounds by directly increasing litter mass loss and indirectly increasing soil pH and microbial biomass. Overall, the results indicate that the acceleration of litter mass loss by earthworms is little affected by deposited compounds, and that earthworms have the potential to mitigate negative impacts of pollutants on litter decomposition and ecosystem processes.
Ternary hierarchical structure based solar‐driven evaporator for long‐lasting concentrated brine treatment
Authors: He Wen , Zhou Lei , Wang Yilan , Yu Lejian , Hou Yaqi , Bi Shaoyang , Wang Miao , Hou Xu 
Published: May 2023

AbstractSolar‐driven evaporation has been a promising desalination method for treating concentrated seawater, since it is cost‐effectiveness, simplicity, and environmentally friendly. However, this method faces an unavoidable long‐term problem that the salt generated in the evaporation processes would affect and hinder its evaporation efficiency. Because the salt inevitably crystallizes on the surface of photothermal evaporation materials, and this crystallization process increases with time to impair the material area of the sunlight absorption and evaporation. Here, we show a ternary hierarchical structure based solar‐driven evaporator that reduces the evaporation material surface coverage of the salt to get long‐lasting concentrated brine treatment capacity. This evaporator is constructed by plugging vertically arranged hollow tube arrays across a porous plate. The top, middle, and bottom of the evaporator respectively serve as the salt crystallization site, the evaporation site, and the light absorption site. Meanwhile, the self‐cleaning of the evaporator can be achieved by back diffusion of the crystallized salts. As a result, this efficient and durable evaporator exhibits freshwater production of 10.21 kg/(m2·day) in outdoor experiment in the treatment of the concentrated natural seawater (21.3 wt%).image