bluuebunny/crossref_metadata_2025_split huggingface dataset:
Structural characterization and oil displacement performance testing of oil‐based supramolecular systems based on polyacrylamide
Authors: Qu Jin , Ma Xinru , Miao Guohao , Yang Yu , Zheng Junping , Liu Xiaofei 
Published: February 2023

AbstractPolyacrylamide nanospheres are widely used as recovery‐enhancing polymers in low‐permeability oil fields. However, with the further exploitation of oil fields in recent years, the performance of the regulating drive system has been put forward to higher requirements, so this study of the structure and oil displacement performance of the oil‐based supramolecular system based on polyacrylamide, and further discusses its oil displacement mechanism. The results show that the viscosity value of the oil‐based supramolecular system increases significantly, which can effectively improve the mobility ratio and improve swept volume. The ability of the system to remove crude oil from the slides is significantly increased, and the mathematical relationships are discussed. The oil displacement efficiency of the oil‐based supramolecular system in different dispersion media was explored in combination with microchannels of a nonhomogeneous multistage bifurcation structure. This work supports the practical application of oil‐based supramolecular nanospheres in oil fields.
Distribution patterns of nearshore aggregations of olive ridley sea turtles (Lepidochelys olivacea) in Rushikulya, Odisha, India: Implications for spatial management measures
Authors: Rao Chetan , Pusapati Chandana , M Muralidharan , Kale Nupur , Barnes Alissa , Shanker Kartik 
Published: February 2023

Abstract

Sea turtles are known to migrate large distances between their foraging and breeding grounds. Olive ridley turtles migrate annually in November to the east coast of India from their foraging grounds in the Bay of Bengal and form large aggregations at Gahirmatha and Rushikulya, two globally significant mass nesting rookeries in Odisha. However, little is known about the spatial and temporal variation in their nearshore distribution prior to the mass nesting events, which typically occur between February and April.
Inter‐ and intra‐annual variations in the density and distribution of olive ridley turtles were examined in the nearshore waters of Rushikulya from 2012 to 2022. The densities of turtles were estimated for each field season and aggregations were spatially delineated using minimum convex polygons.
There was considerable interannual variation in turtle abundance, which typically increased from December to February in Rushikulya. Turtle densities in nearshore waters did not correspond to the presence or absence of mass nesting, thus suggesting that management decisions cannot be based only on nesting beach estimates.
Turtle aggregations in Rushikulya were spatially and temporally dynamic and were typically concentrated around the nesting beach. However, they occupied only a small fraction of the area designated as a no‐fishing zone, which suggests that these regulations need to be reassessed. As the no‐fishing zones impose high costs on fishers, it is critical to look at alternative protection measures, such as dynamic spatial closures, developed in consultation with local fishers.
How does family support influence digital immigrants' extended use of smartphones? An empirical study based on IT identity theory
Authors: Fang Zian , Liu Yongmei , Jiang Fei , Dong Wei 
Published: February 2023

AbstractThe number of digital immigrants using new technologies such as smartphones is rapidly increasing. However, digital immigrants still struggle to actually use and benefit from digital technology. This article examines the role of family support in digital immigrants' use of more smartphone functions based on information technology (IT) identity theory. We surveyed 241 digital immigrants who owned smartphones and used structural equation modeling (PLS‐SEM) for analysis. We examined the contributing roles of family support for digital immigrants' IT identity and extended use behavior. Family cognitive and emotional support can shape IT identity by improving the smartphone‐related experience. Family support has a positive impact on digital immigrants' self‐efficacy, embeddedness, perceived usefulness, and perceived enjoyment of using a smartphone. Positive usage experience can also facilitate the establishment of IT identity, which is a key predictor of smartphone use behavior. A strong IT identity also promotes extended use behavior. We discuss the contributions and implications of our findings.
A new 90‐day drinking water study of sodium cyanide in rats to further evaluate National Toxicology Program findings and inform risk assessment
Authors: Tyner Melinda C. , Greeley Melanie A. 
Published: February 2023

AbstractBackgroundThe National Toxicology Program (NTP, 1993) reported male reproductive effects in a sodium cyanide (NaCN) drinking water study. The critical effect, decreased cauda epididymis weights, was used by U.S. Environmental Protection Agency for their hazard characterization and risk assessment of hydrogen cyanide and cyanide salts. To further investigate potential male reproductive effects, we conducted a new 90‐day drinking water study.MethodsOur study expanded evaluations of testes and thyroid. Male F344 rats received NaCN in drinking water at 0, 0 (water restricted; paired to top dose), 3, 10, 30, 100, and 300 ppm for 13 weeks, followed by 10‐weeks recovery.ResultsPlasma thiocyanate increased dose‐dependently but returned to baseline during recovery. NaCN caused neither effects on survival, body weight, food consumption, hematology, serum chemistry, urinalysis, thyroid hormones, testes or epididymides weights, sperm motility/viability, sperm morphology, or sperm production; nor clinical, ophthalmic, or histopathologic findings. Increased organ weights in thyroid/parathyroid and liver occurred at 300‐ppm but were recoverable. No changes occurred in male reproductive organs.ConclusionsAbsent adverse effects, the NOAEL was 300 ppm (21.66 mg/kg/day; highest dose tested). Based on organ weight increases at 300 ppm, the NOEL was 100 ppm (7.46 mg/kg/day).
Intergenerational trauma: A silent contributor to mental health deterioration in Afghanistan
Authors: Ullah Hamid , Ahmed Hafsa , Tharwani Zoaib Habib , Shaeen Sean Kaisser , Rahmat Zainab Syyeda , Essar Mohammad Yasir 
Published: February 2023

AbstractMultiple theories, including family systems, epigenetics, attachments, and many others, have proposed mechanisms for trauma transmission from generation to generation. Intergenerational trauma is today one of the most important psychosocial issues affecting Afghans’ mental health and psychology, with the potential to affect subsequent generations. A variety of factors have impacted the mental health of the Afghan population over the years, including years of conflict, socioeconomic instability, natural disasters, chronic drought conditions, economic turmoil, and food insecurity, all of which have been exacerbated by recent political turbulence and the The Coronavirus pandemic COVID‐19 pandemic that has further increased the susceptibility to intergenerational trauma among the Afghan population. International bodies must play a role in addressing intergenerational trauma among Afghans. Breaking the chain in future generations will be possible by resolving political issues, providing adequate health facilities, financial support, and eliminating stigmas associated with mental health issues.
Upper extremity deep venous thrombosis after BNT162b2 mRNA COVID‐19 vaccine case report
Authors: Gonzalez Susan , Levine David M. 
Published: February 2023

AbstractWe describe a case of an otherwise healthy 60‐year‐old female patient who presented 6 days after receipt of the second dose of the BNT162b2 mRNA COVID‐19 (Pfizer/BioNTech) vaccine and was found to have upper extremity deep venous thrombosis.
Leaving obstacles aside: Antegrade paravalvular leakage closure after transcatheter aortic valve replacement
Authors: Martinez Javier , Alperi Alberto , Silva Iria , Pascual Isaac , Ledesma David , Alvarez Rut , Almendarez Marcel , Avanzas Pablo , del Valle Raquel , Moris Cesar 
Published: February 2023

AbstractParavalvular leakage (PVL) is yet a potential and serious complication after transcatheter aortic valve replacement. Percutaneous PVL closure may be the treatment of choice upon failure of balloon postdilation in patients with excessive surgical risk. If the retrograde approach fails, an antegrade strategy might provide the solution.
Linear IgA bullous dermatosis and elevated bullous interleukin‐6 levels: Responsive to treatment with Anti‐IL‐6 receptor monoclonals
Authors: Jordan Stanley C. , Balzer Bonnie , Nast Cynthia , Atienza Janet , Lim Katherine , Kumar Sanjeev , Nissen Nicholas , Shin Bongha 
Published: February 2023

AbstractLinear IgA bullous dermatosis (LABD) is a rare autoimmune/inflammatory skin condition. Here, we report on a patient who developed treatment resistant LABD. At diagnosis, elevations of IL‐6 and C‐reactive protein in the blood and extreme elevations of IL‐6 in LABD bullous fluid were seen. The patient responded well to tocilizumab (anti‐IL‐6 receptor) treatment.
Single visit rehabilitation of 12‐day neonate with cleft palate using modified feeding spoon impression technique: A case report
Authors: Chandwani Neelam , Nandan Monika , Jadhav Ganesh , Pawar Ajinkya Mansing , Karobari Mohmed Isaqali , Marya Anand 
Published: February 2023

AbstractThe rehabilitation of the cleft requires a multidisciplinary approach involving a pediatrician, surgeon, otolaryngologist, speech therapist, orthodontist, prosthodontist, and psychologist. The present case report illustrates the rehabilitation of a 12‐day‐old neonate with a cleft palate. Since the palatal arch of the neonate was very small, a feeding spoon was innovatively modified to obtain the impression. The obturator was fabricated on the same day and delivered in one appointment.
Impact of chiral ligands on photophysical and electro‐optical properties of β‐diketonate europium complexes in circularly polarized OLEDs
Authors: Zinna Francesco , Pasini Mariacecilia , Cabras Matteo , Scavia Guido , Botta Chiara , Di Bari Lorenzo , Giovanella Umberto 
Published: February 2023

AbstractLuminescent lanthanide complexes exhibiting chiroptical properties are attracting attention for their application in chiral optoelectronics and photonics, thanks to their unique optical properties, allied to intraconfigurational f–f transitions, which are generally electric‐dipole‐forbidden and can be magnetic dipole‐allowed, which in an appropriate environment can lead to high dissymmetry factors and strong luminescence, in the presence of an antenna ligand. However, because luminescence and chiroptical activity are governed by different selection rules, their successful application in commonly used technologies is still an expectation. Recently, we showed that europium complexes bearing β‐diketonates acting as luminescence sensitizers, and chiral bis(oxazolinyl) pyridine derivatives as the chirality inducer, reasonably perform in circularly polarized (CP) organic light‐emitting devices (OLEDs). Indeed, europium β‐diketonate complexes are an interesting molecular starting point, given their strong luminescence and their established use in conventional (i.e., nonpolarized) OLEDs. In this context, it is interesting to investigate in detail the impact of the ancillary chiral ligand on complex emission properties and the performances of corresponding CP‐OLEDs. Here we show that, by incorporating the chiral compound as emitter in the architecture of solution processed electroluminescent devices, CP emission is retained, and the efficiency of the device is comparable to reference unpolarized OLED. The observed remarkable dissymmetry values strengthen the position of chiral lanthanide‐OLEDs as CP‐emitting devices.
The expression of chirality in linked poly(thiophene)s
Authors: Timmermans Birgitt , De Winter Julien , Gerbaux Pascal , Koeckelberghs Guy 
Published: February 2023

AbstractConjugated polymers have demonstrated to express chirality, for instance, by strong circular dichroism (CD). However, the shape and intensity of the spectra can be quite different and are very difficult to predict. Molecular irregularity, star‐shapes, and linking polymers have demonstrated to affect the CD, often in a positive way. In this research, we design two different chiral arms, in which the molecular irregularity results in a significantly different CD. Next, the arms are coupled to a linear core in all possible combinations. In this way, we demonstrate that rather small irregularities and linking arms to a central core increases CD, whereas heterogenous combinations result in smaller CD.
An in silico approach to determine inter‐subunit affinities in human septin complexes
Authors: Grupp Benjamin , Lemkul Justin A. , Gronemeyer Thomas 
Published: February 2023

AbstractThe septins are a conserved family of filament‐forming guanine nucleotide binding proteins, often named the fourth component of the cytoskeleton. Correctly assembled septin structures are required for essential intracellular processes such as cytokinesis, vesicular transport, polarity establishment, and cellular adhesion. Structurally, septins belong to the P‐Loop NTPases but they do not mediate signals to effectors through GTP binding and hydrolysis. GTP binding and hydrolysis are believed to contribute to septin complex integrity, but biochemical approaches addressing this topic are hampered by the stability of septin complexes after recombinant expression and the lack of nucleotide‐depleted complexes. To overcome this limitation, we used a molecular dynamics‐based approach to determine inter‐subunit binding free energies in available human septin dimer structures and in their apo forms, which we generated in silico. The nucleotide in the GTPase active subunits SEPT2 and SEPT7, but not in SEPT6, was identified as a stabilizing element in the G interface. Removal of GDP from SEPT2 and SEPT7 results in flipping of a conserved Arg residue and disruption of an extensive hydrogen bond network in the septin unique element, concomitant with a decreased inter‐subunit affinity. Based on these findings we propose a singular “lock‐hydrolysis” mechanism stabilizing human septin filaments.
Evaluation of alternative gas chromatographic and mass spectrometric behaviour of trimethylsilyl‐derivatives of non‐hydrolysed sulfated anabolic steroids
Authors: Albertsdóttir Aðalheiður Dóra , Van Gansbeke Wim , Van Eenoo Peter , Polet Michael 
Published: February 2023

AbstractSulfated metabolites have shown to have potential as long‐term markers (LTMs) of anabolic–androgenic steroid (AAS) abuse. The compatibility of gas chromatography–mass spectrometry (GC–MS) with trimethylsilyl (TMS)‐derivatives of non‐hydrolysed sulfated steroids has been demonstrated, where, after derivatisation, generally, two closely eluting isomers are formed that both have the same molecular ion [M‐H2SO4]•+. Sulfated reference standards are in limited commercial availability, and therefore, the current knowledge of the GC–MS behaviour of these compounds is mainly based on sulfating and analysing the available standard reference material. This procedure can unfortunately not cover all of the current known LTMs as these are often not available as pure substance. Therefore, in theory, some metabolites could be missed as they exhibit alternative behaviour. To investigate the matter, in‐house sulfated reference materials that bear resemblance to known sulfated LTMs were analysed on GC–MS in their TMS‐derivatised non‐hydrolysed state. The (alternative) gas chromatographic and mass spectrometric behaviour was mapped, evaluated and linked to the corresponding steroid structures. Afterwards, using fraction collection, known sulfated LTMs were isolated from excretion urine to confirm the observed findings. The categories that were selected were mono‐hydroxy‐diones, 17‐methyl‐3,17‐diols and 17‐keto‐3,16‐diols as these are commonly encountered AAS conformations. The ability to predict the GC–MS behaviour of non‐hydrolysed sulfated AAS metabolites is the corner stone of finding new metabolites. This knowledge is also essential, for example, for understanding AAS detection analyses, for the mass spectrometric characterization of metabolites of new designer steroids or when one needs to characterize an unknown steroid structure.
Environmental conditions and marine heatwaves influence blue whale foraging and reproductive effort
Authors: Barlow Dawn R. , Klinck Holger , Ponirakis Dimitri , Branch Trevor A. , Torres Leigh G. 
Published: February 2023

AbstractAnimal behavior is motivated by the fundamental need to feed and reproduce, and these behaviors can be inferred from spatiotemporal variations in biological signals such as vocalizations. Yet, linking foraging and reproductive effort to environmental drivers can be challenging for wide‐ranging predator species. Blue whales are acoustically active marine predators that produce two distinct vocalizations: song and D calls. We examined environmental correlates of these vocalizations using continuous recordings from five hydrophones in the South Taranaki Bight region of Aotearoa New Zealand to investigate call behavior relative to ocean conditions and infer life history patterns. D calls were strongly correlated with oceanographic drivers of upwelling in spring and summer, indicating associations with foraging effort. In contrast, song displayed a highly seasonal pattern with peak intensity in fall, which aligned with the timing of conception inferred from whaling records. Finally, during a marine heatwave, reduced foraging (inferred from D calls) was followed by lower reproductive effort (inferred from song intensity).
Left atrial enlargement is associated with pulmonary vascular disease in heart failure with preserved ejection fraction
Authors: Gard Emma K. , Beale Anna L. , Telles Fernando , Silvestry Frank E. , Hanff Thomas , Hummel Scott L. , Litwin Sheldon E. , Petrie Mark C. , Shah Sanjiv J. , Borlaug Barry A. , Burkhoff Dan , Komtebedde Jan , Kaye David M. , Nanayakkara Shane 
Published: February 2023

ABSTRACTAimsElevated left atrial (LA) pressure is a pathophysiologic hallmark of heart failure with preserved ejection fraction (HFpEF). Chronically elevated LA pressure leads to LA enlargement, which may impair LA function and increase pulmonary pressures. We sought to evaluate the relationship between LA volume and pulmonary arterial haemodynamics in patients with HFpEF.Methods and resultsData from 85 patients (aged 69 ± 8 years) who underwent exercise right heart catheterization and echocardiography were retrospectively analysed. All had symptoms of heart failure, left ventricular ejection fraction ≥50% and haemodynamic features of HFpEF. Patients were divided into LA volume index‐based tertiles (≤34 ml/m2, >34 to ≤45 ml/m2, >45 ml/m2). A subgroup analysis was performed in patients with recorded LA global reservoir strain (n = 60), with reduced strain defined as ≤24%. Age, sex, body surface area and left ventricular ejection fraction were similar between volume groups. LA volume was associated with blunted increases in cardiac output with exercise (padjusted <0.001), higher resting mean pulmonary artery pressure (padjusted = 0.003), with similar wedge pressure (padjusted = 1). Pulmonary vascular resistance (PVR) increased with increasing LA volume (padjusted <0.001). Larger LA volumes featured reduced LA strain (padjusted <0.001), with reduced strain associated with reduced PVR–compliance time (0.34 [0.28–0.40] vs. 0.38 [0.33–0.43], p = 0.03).ConclusionIncreasing LA volume may be associated with more advanced pulmonary vascular disease in HFpEF, featuring higher PVR and pulmonary pressures. Reduced LA function, worse at increasing LA volumes, is associated with a disrupted PVR–compliance relationship, further augmenting impaired pulmonary haemodynamics.
Field Availability and Avoidance of Imidacloprid-Treated Soybean Seeds and Cotyledons by Birds
Authors: Addy-Orduna Laura , Mateo Rafael 
Published: February 2023

Abstract
Treated seeds and their cotyledons can present a toxicological risk to seed-eating birds. To assess whether avoidance behavior limits exposure and consequently the risk to birds, three fields were sown with soybeans. Half of the surface of each field was sown with seeds treated with 42 g/100 kg seed of insecticide imidacloprid (T plot, treated) and the other half with seeds without imidacloprid (C plot, control). Unburied seeds were surveyed in C and T plots at 12 and 48 h post-sowing. Damaged seedlings were surveyed in C and T plots at 12 days post-sowing. The abundance and richness of birds was surveyed at the field level (without distinguishing between C and T plots) before, during, and after sowing, and 12 days post-sowing. Unburied seed density was higher in the headlands of the T plots than in the C plots, but did not differ between 12 and 48 h. The damage to cotyledons of seedlings was 15.4% higher in C plots than in T plots. The abundance and richness/ha of birds that eat seeds and cotyledons were lower after sowing, indicating a deterrent effect on birds by sowing imidacloprid-treated seeds. Although the variation in seed density over time does not allow solid conclusions to be drawn about the avoidance of seeds treated by birds, the seedling results suggest an aversive effect of imidacloprid-treated soybeans on birds. The dominant species was the eared dove (Zenaida auriculata), whose risk of acute poisoning by imidacloprid in soybean seeds and cotyledons was low, according to its toxicity exposure ratio, foraged area of concern, and foraged time of concern. Environ Toxicol Chem 2023;42:1049–1060. © 2023 SETAC
Assessment and the academic public intellectual
Authors: Bray Nathaniel J. 
Published: February 2023

AbstractHow should we account for and assess the work of the public intellectual? This chapter unpacks approaches to the assessment of the public intellectual to broadly consider the roles and functions of the academic public intellectual, examine how their roles fit within Boyer's domains of scholarship and how institutional structures both support and impinge upon intellectual activities. It then discusses how the assessment of public intellectuals can be more appropriately and objectively conducted using alternative metrics and clearer expectations for evaluation.
Orientations to the public in the academic profession
Authors: Johnson David R. , Ecklund Elaine Howard 
Published: February 2023

AbstractWhat do academics think about their “responsibilities” to the public? This chapter provides a view of “the public intellectual” by examining how academics construct their relationship to the public. Drawing on in‐depth interviews with physicists at universities in the United States (US) and the United Kingdom (UK), we illustrate a typological approach that could be applied to understanding the public intellectual in any academic discipline and points to implications for how universities and the academic profession can engage with the public. Academics should view themselves as stewards of the public good and be able to articulate how such a role is manifest in their work.