bluuebunny/crossref_metadata_2025_split huggingface dataset:
Impact of composition and salinity on swelling and gel strength of poly (acrylamide-co-acrylic acid) preformed particle gel
Authors: Ben Ali Ahmed , Elaf Reem , Saad Mohammed , Hussein Ibnelwaleed A. , Bai Baojun 
Published: June 2023

AbstractThe effects of various material
compositions and reservoir environments on the ultimate strength and swelling kinetics of a commercial preformed particle gel (PPG) have been investigated. This study used different ratios of acrylamide and acrylic acid copolymers with a specific crosslinker concentration. Results have indicated that increasing the acrylic acid proportion enhances the PPGs’ ability to swell but weakens their network structure. In contrast, increasing the crosslinker content decreases the swelling ratio and increases the gel strength. The highest equilibrium swelling capacity among the six preformed particle gel samples was obtained for PPG2, which has the highest acrylic acid amount and the lowest crosslinker content, with a swelling ratio of 2400 g/g in deionized water and 59.8 g/g in brine 1 (67535.8 mg/l). On the contrary, PPG5, with the lowest acrylic acid and highest crosslinker content, has a swelling capacity of 239 g/g and more than 17 g/g in distilled and brine 1, respectively. Yet, PPG5 has the highest swollen gel strength of 615.5 Pa in deionized water and 3344 Pa in brine 1. The PPGs’ swelling ratios showed stepwise improvements along with increasing temperature, notably after 50 °C, yet, the storage modulus (G′) was negatively affected. The PPGs revealed the highest swelling behavior in pH 6–8, decreasing dramatically in more acidic and basic conditions. The swelling ratios of the PPGs in brine 1 at 50 °C were between 12 and 32 g/g, having strengths in the range of 566–5508 Pa, depending on the crosslinker ratio. The PPGs also demonstrated the ability to compete with other commercial PPGs as they have shown physical and thermal stability when aging at 50 °C, specifically those with high crosslinker content (PPG5).
Trait-Anxious People Take Longer to Search for Happy Faces in the Presence of Neutral and Fearful Distractors
Authors: Tipura Eda , Souto David , Fox Elaine 
Published: June 2023

AbstractA large body of evidence suggests that processing of affective information is typically disrupted in anxiety. It has also been hypothesized that anxious individuals are less able to evaluate contextual cues and to respond in an adaptive way to stress. In the present study, 25 participants (16 females; 9 males) scoring high (scores of 45 or above) and 26 participants (13 females; 13 males) scoring low (scores of 35 and below) on a standardized measure of trait anxiety performed an emotion search task to investigate attentional biases when the task provides an explicit emotional context. An emotional context was set in each block by asking participants to look as quickly as possible at a face expressing a specific emotion, while eye movements were being recorded. On each trial, two faces appeared, one of them expressing the target emotion and the other one expressing a distractor emotion. High trait-anxious participants showed slower response times (time to look at the instructed emotion), regardless of the affective context, compared to the control group. Additionally, we found slower responses to happy faces (positive context) in the anxious group in the presence of neutral and fearful distractors. Cognitive control may therefore be disrupted in anxiety, as anxious people take longer to process (search for) happy faces, presumably because attentional resources are drawn by neutral and fearful distractors. Those differences were not observed in a simple reaction times task, which suggests that attentional biases, and not differential processing of low-level facial features, are responsible for those differences.
Artificial Bone Graft Substitutes for Curettage of Benign and Low-Grade Malignant Bone Tumors: Clinical and Radiological Experience with Cerasorb
Authors: Wittig Ulrike Susanne , Friesenbichler Jörg , Liegl-Atzwanger Bernadette , Igrec Jasminka , Andreou Dimosthenis , Leithner Andreas , Scheipl Susanne 
Published: June 2023

Abstract
Background
Artificial bone graft substitutes (ABGS) for curettage of bone tumors are becoming increasingly popular. The aim of this retrospective analysis was to determine the efficacy of the ABGS Cerasorb (Curasan-AG, Kleinostheim, Germany), a beta-tricalcium phosphate (beta-TCP), concerning resorption profile, bone healing, and remodeling after surgery and to evaluate potential complications.

Methods
Forty-three patients suffering from benign and low-grade malignant bone tumors were treated with curettage and refilling of the bony cavity using the ABGS Cerasorb between 2018 and 2021 and included in the final analysis. Clinical follow-up exams with X-rays in two planes were performed 6 weeks, 3 months, 6 months, and 1 year after surgery.

Results
After a mean follow-up period of 14.6 months, radiological consolidation following curettage was observed in all patients. Total resorption was observed in 16.3% of patients; in the other 83.7%, resorption was partial. In four patients, of whom two had a tumor in the distal femur and two in the humeral diaphysis, fractures occurred within 6 weeks after primary surgery.

Conclusion
In conclusion, the beta-TCP Cerasorb seems to be a reliable bone graft substitute with low complication rates and is a suitable alternative to autologous bone grafts or allografts. Nonetheless, it shows a tendency of delayed resorption.

Level of Evidence
III; retrospective cohort study.
On the Existence and Multiplicity of Classical and Weak Solutions of a Hamiltonian Integro-Differential System and Their Equivalence Relation
Authors: Abdolrazaghi Fatemeh , dinmohammadi Abdollah 
Published: June 2023

AbstractThis paper is devoted to the study of existence and multiplicity of weak solutions to a Hamiltonian integro-differential system. The main tool used is the theory of min–max based on Mountain-Pass theorem. Hamiltonian integro-differential considered system is of Fredholm type and the imposed Dirichlet boundary conditions are occurred at the integral bounds. Furthermore, we demonstrate some cases in which the weak solutions are equivalent with classical solutions
Value Sensitive Design for Self-Sovereign Identity Solutions: Conceptual Investigation of uNLock Use Case
Authors: Ishmaev Georgy , Noordhoek Roderick , van Steenbergen Marlies , Vermaes Nadia 
Published: June 2023

AbstractThis paper aims to address the research gap in ethical design frameworks for self-sovereign identity (SSI) solutions. We present a case study of value sensitive design (VSD) conceptual investigation applied in the context of SSI-based solutions for the sharing of medical credentials uNLock. We evaluate the applicability and quality of VSD application on the basis of 5 criteria. We validate these findings by comparing the results of the original report with the studies presenting empirically informed insights from the deployment of SSI solutions for the presentation of medical credentials. We identify a problem of “value branching” particular to SSI solutions that can lead to the overinflation of the set of relevant values. We outline the affordances and limitations of the conceptual VSD investigation in our case study. We further reflect on the limits of general SSI principles and argue that the ethical design of SSI solutions always requires context-specific evaluative frameworks.
Investigating seismicity rates with Coulomb failure stress models caused by pore pressure and thermal stress from operating a well doublet in a generic geothermal reservoir in the Netherlands
Authors: Hutka Gergő András , Cacace Mauro , Hofmann Hannes , Mathur Bakul , Zang Arno 
Published: June 2023

Abstract
The utilisation of geothermal energy in the Netherlands is primarily focused on deep sedimentary aquifers, which are often intersected by major faults. Geothermal operations (i.e. fluid production and injection) may alter the effective stress state along these faults and trigger induced seismic events. Pore pressure perturbations have been generally considered the main driver of injection-induced seismicity. However, thermal stresses caused by temperature gradients between the re-injected cold fluid and the reservoir rock may also contribute to the triggering of earthquakes in geothermal reservoirs. While existing geothermal power plants operating in sandstone reservoirs did not produce any major induced seismicity, it is a matter of debate whether a reduction in the temperature of the re-injected fluid could increase the seismic hazard potential. In this study, we applied modified Gutenberg–Richter statistics based on frictional Coulomb stress variations implemented in a coupled thermo-hydro-mechanical model to estimate the seismic hazard caused by the operation of a geothermal doublet. We conducted a systematic parametric study to assess and rank the impact of different intrinsic (geological) and extrinsic (operational) parameters on the induced seismic hazard potential. We identified a competing mechanism between induced variations in pore pressure and thermal stress within the reservoir in controlling induced seismicity. We found that stress changes induced by pore pressure variations are the main cause of seismic hazard, although thermally induced stresses also contribute significantly. The results indicate that by optimising the operational parameters it is possible to increase production efficiency while maintaining a long-term control over the fluid injection-induced seismicity.
SUTTON HOO: RE-IMAGING THE SHIP AND CHAMBER
Authors: Fenwick Valerie 
Published: June 2023

The cemetery at Sutton Hoo in East Suffolk includes tumuli dating to the sixth–seventh centuries ad. The largest contained an intact ship-burial. The man commemorated is not identifiable, but is often presumed to be Rædwald, rex Anglorum c ad599–624/5. Excavation was curtailed by the outbreak of war in 1939. Despite subsequent re-excavation and lengthy research, questions remain.Information dispersed in the definitive publication is correlated and developed. Digital 3D imaging of the ship’s iron fastenings are used here to extrapolate curved lines of missing rivets and superimpose them on the burial chamber plan. A digital roof reconstruction is also presented.Mechanisms of collapse of the objects are deduced from their positioning and damage, revealing space for access to the chamber. A cross-section depicts the calculated height of the deck and known tilt of the ship. Residues of phosphate, Middle Eastern bitumen, tar and tape cumulatively suggest embalming practices. A temporary coffin and a bed on which possessions were placed are proposed.The most valuable object relinquished is deduced to be the ship. Fragments of a possible anchor are identified. The suggested identification of the iron stand as a raised light would allow supporting ships to follow.
Endogenous Benchmarking and Government Accountability: Experimental Evidence from the COVID-19 Pandemic
Authors: Becher Michael , Brouard Sylvain , Stegmueller Daniel 
Published: June 2023

AbstractWhen do cross-national comparisons enable citizens to hold governments accountable? According to recent work in comparative politics, benchmarking across borders is a powerful mechanism for making elections work. However, little attention has been paid to the choice of benchmarks and how they shape democratic accountability. We extend existing theories to account for endogenous benchmarking. Using the COVID-19 pandemic as a test case, we embedded experiments capturing self-selection and exogenous exposure to benchmark information from representative surveys in France, Germany, and the UK. The experiments reveal that when individuals have the choice, they are likely to seek out congruent information in line with their prior view of the government. Moreover, going beyond existing experiments on motivated reasoning and biased information choice, endogenous benchmarking occurs in all three countries despite the absence of partisan labels. Altogether, our results suggest that endogenous benchmarking weakens the democratic benefits of comparisons across borders.
Networking Frictions in Venture Capital, and the Gender Gap in Entrepreneurship
Authors: Howell Sabrina T. , Nanda Ramana 
Published: June 2023

AbstractWe find that male participants in Harvard Business School’s New Venture Competition who were randomly exposed to more venture capital (VC) investors on their panel were substantially more likely to start a VC-backed startup post-graduation, indicating that access to investors impacts fundraising independent of the quality of ideas. However, female participants experience no benefit from exposure to male or female venture capitalists (VCs), which appears related to a reduced propensity to reach out to VCs to whom they were exposed. Our results therefore also demonstrate gender-based differences in the degree to which increased exposure to investors can address networking frictions in venture capital.
The secret of September: The 1949 oil agreements between the United States and South Korea
Authors: Kwon Ohsoo 
Published: June 2023

AbstractAfter the Second World War, the US government established a new oil order, forming close ties with three major oil companies—Standard Vacuum, Shell, and California-Texas—referred to as the ‘Three Sisters’ in Korea, which was newly liberated from Japanese colonialism. Even after the South Korean government was established, the US government and the Three Sisters worked to maintain the order. Using the carrot of the Economic Cooperation Administration (ECA) funds, in 1949 the US government pressured the South Korean government into oil agreements that would facilitate the supply of petroleum products to the country. The 1949 oil agreements were completed after three rounds of negotiations. The process of signing the agreements was not limited to the import, storage, and sale of petroleum products in exchange for US aid to South Korea. It also sought to respond to the various interests of Koreans who wanted to create an independent economic structure in the midst of establishing a new government. This article explores the three rounds of negotiations for the 1949 oil agreements whereby the symbiotic relationship between the US government and the Three Sisters was realized in partnership with the interests of the South Korean government. Furthermore, it seeks to broaden the research on the history of Korean oil by promoting an understanding of how US oil policy affected Korea immediately after its liberation from Japanese colonial rule.
Disparities in cannabis-related emergency department visits across depressed and non-depressed individuals and the impact of recreational cannabis policy in Ontario, Canada
Authors: Kim Chungah , Dusing Gabriel John , Nielsen Andrew , MacMaster Frank P. , Rittenbach Katherine , Allin Sara , O'Campo Patricia , Penney Tarra L. , Hamilton Hayley A. , Kirst Maritt , Chum Antony 
Published: June 2023

AbstractBackgroundRecreational cannabis policies are being considered in many jurisdictions internationally. Given that cannabis use is more prevalent among people with depression, legalisation may lead to more adverse events in this population. Cannabis legalisation in Canada included the legalisation of flower and herbs (phase 1) in October 2018, and the deregulation of cannabis edibles one year later (phase 2). This study investigated disparities in cannabis-related emergency department (ED) visits in depressed and non-depressed individuals in each phase.MethodsUsing administrative data, we identified all adults diagnosed with depression 60 months prior to legalisation (n = 929 844). A non-depressed comparison group was identified using propensity score matching. We compared the pre–post policy differences in cannabis-related ED-visits in depressed individuals v. matched (and unmatched) non-depressed individuals.ResultsIn the matched sample (i.e. comparison with non-depressed people similar to the depressed group), people with depression had approximately four times higher risk of cannabis-related ED-visits relative to the non-depressed over the entire period. Phases 1 and 2 were not associated with any changes in the matched depressed and non-depressed groups. In the unmatched sample (i.e. comparison with the non-depressed general population), the disparity between individuals with and without depression is greater. While phase 1 was associated with an immediate increase in ED-visits among the general population, phase 2 was not associated with any changes in the unmatched depressed and non-depressed groups.ConclusionsDepression is a risk factor for cannabis-related ED-visits. Cannabis legalisation did not further elevate the risk among individuals diagnosed with depression.
Salinity Impacts on Floc Size and Growth Rate With and Without Natural Organic Matter
Authors: Abolfazli Ehsan , Strom Kyle 
Published: June 2023

AbstractDue to the flocculation process, suspended mud aggregates carried by rivers to the coastal ocean are thought to undergo changes in size and shape in response to environmental drivers such as turbulence, sediment concentration, organic matter (OM), and salinity. Some have assumed that salt is necessary for floc formation, and that mud, therefore, reaches the estuary unflocculated. Yet mud flocs exist in freshwater systems long before the estuarine zone, likely due to the presence of OM acting as a floc‐promoting binder. Therefore, it is important to consider how salinity affects flocculation, if at all, in the presence of OM. Here, we used experiments to examine the flocculation of a natural mud with and without OM. Results showed that the rate of floc growth and equilibrium size both increase with salinity regardless of the presence or absence of OM. However, the response of both to salinity was stronger when OM was present. In deionized water, natural sediment with OM was seen to produce large flocs. However, the size distribution of the suspension tended to be bimodal. With the addition of salt, increasing amounts of unflocculated material became bound within flocs, producing a more unimodal size distribution. Here, the enhancing effects of salt were noticeable at even 0.5 ppt, and increases in salinity past 3–5 ppt only marginally increased the floc growth rate and final size. Data from the experiment were used to develop a salinity‐dependent model to account for changes in floc growth rate and equilibrium size.
Balancing Volume, Temperature, and Salinity Budgets During 2014–2018 in the Tropical Pacific Ocean State Estimate
Authors: Verdy Ariane , Mazloff Matthew R. , Cornuelle Bruce D. , Subramanian Aneesh C. 
Published: June 2023

AbstractA state estimate of the tropical Pacific Ocean is used to analyze regional volume, temperature, and salinity budgets during 2014–2018. The simulated ocean state is constrained by both model dynamics and assimilated observations. Comparisons with independent mooring data show that the state estimate is consistent with the observed variability in temperature and velocity. Budgets are analyzed between 5°S and 5°N in the upper 300 m, inside a box defined to represent the central and eastern equatorial Pacific. Transports through the faces of this box are quantified to understand the processes responsible for variability in box‐mean properties. Vertical mixing across 300 m is negligible; temperature and salinity tendencies are balanced by surface fluxes and advective divergence, which is decomposed into geostrophic and ageostrophic components. The onset and recovery of the 2015/2016 El Niño event is found to be dominated by anomalous surface fluxes and horizontal advection. During the onset phase, weaker trade winds cause the shallow meridional overturning circulation to slow down, which reduces the poleward transport of heat and leads to upper ocean warming. Anomalous precipitation and advection of fresh water from the western Pacific drive the net freshening of the region. Relaxation from El Niño conditions is dominated by wind‐driven meridional advection at 5°N. As the meridional advection regains strength, Ekman advection efficiently exports the warm, fresh surface water out of the equatorial region. Quantifying the heat and salt transport changes in response to wind variability strengthens our understanding of global ocean heat transport.
Efficacy of Nano Silver Fluoride and/or Diode Laser In Enhancing Enamel Anticariogenicity around orthodontic brackets
Authors: Alsherif Aya Anwar , Farag Mohamed Ali , Helal Mai Badreldin 
Published: June 2023

Abstract
Purpose
This in vitro study aimed to compare the anticariogenic effect of using diode laser irradiation and/or nano silver fluoride varnish around orthodontic brackets.

Materials and methods
60 caries-free and intact premolars were randomly divided into 3 experimental groups as follow: (1) Group I (nano silver fluoride treated group, n = 20), (2) Group II (diode laser treated group, n = 20) and (3) Group III (combined nano silver fluoride and diode laser treated group, n = 20). Anticariogenicity was assessed using polarized light, scanning electron microscope, elemental and shear bond strength analyses.

Results
PLM and SEM showed presence of few demineralized areas in group I. Group II revealed a dramatic increased demineralization. Group III disclosed almost typical homogenous surface enamel. elemental analysis showed a highly significant difference between Group III and II and a significant difference between Group III and I. Shear bond strength analysis revealed a significant difference between group I and II and between group III and II. The difference between group III and I was non-significant.

Conclusion
Both diode laser and nano silver fluoride positively affected dental enamel with the most superior enhancement in enamel criteria was achieved by surface pretreatment by combined nano silver fluoride varnish and diode laser irradiation.
Genetics and orofacial clefts: a clinical perspective
Authors: Kini Usha 
Published: June 2023

AbstractOrofacial clefts (OFCs) are the most common congenital craniofacial anomaly seen in humans. Most OFCs are sporadic and isolated - these are thought to be multifactorial in origin. Chromosomal and monogenic variants account for the syndromic forms and for some of the non-syndromic inherited forms. This review discusses the importance of genetic testing and the current clinical strategy to deliver a genomics service that is of direct benefit to patients and their families.
Mdm2/p53 levels in bone marrow mesenchymal stromal cells are essential for maintaining the hematopoietic niche in response to DNA damage
Authors: Pourebrahim Rasoul , Heinz Montoya Rafael , Alaniz Zoe , Ostermann Lauren , Lin Patrick P. , Liu Bin , Ayoub Edward , Burks Jared K. , Andreeff Michael 
Published: June 2023

AbstractMesenchymal stromal cells (MSCs) are a key component of the bone marrow (BM) niche, providing essential support required for the maintenance of hematopoietic stem cells. To advance our understanding of physiological functions of p53 and Mdm2 in BM-MSCs, we developed traceable conditional mouse models targeting Mdm2 and/or Trp53 in vivo. We demonstrate that Mdm2 is essential for the emergence, maintenance, and hematopoietic support of BM-MSCs. Mdm2 haploinsufficiency in BM-MSCs resulted in genotoxic stress–associated thrombocytopenia, suggesting a functional role for Mdm2 in hematopoiesis. In a syngeneic mouse model of acute myeloid leukemia (AML), Trp53 deletion in BM-MSCs improved survival, and protected BM against hematopoietic toxicity from a murine Mdm2i, DS-5272. The transcriptional changes were associated with dysregulation of glycolysis, gluconeogenesis, and Hif-1α in BM-MSCs. Our results reveal a physiologic function of Mdm2 in BM-MSC, identify a previously unknown role of p53 pathway in BM-MSC–mediated support in AML and expand our understanding of the mechanism of hematopoietic toxicity of MDM2is.