bluuebunny/crossref_metadata_2025_split huggingface dataset:
Thermal dynamics of gold nanoshell dimers under femtosecond laser pulse irradiation: A numerical approach
Authors: Fernandes Joshua , Kang Sangmo 
Published: September 2023

AbstractWe present a numerical investigation of the photothermal response of gold nanoshell (AuNS) dimers when subjected to femtosecond laser pulse irradiation. The time‐varying temperature fields for core–shell AuNS dimers are quantified by implementing finite element modeling, integrating the electromagnetic and thermal dual‐physics simulations. Given the ultrafast nature of laser pulses, we employ a two‐temperature model to accurately portray the energy transfer from excited electrons to the lattice system, a process typically completed post pulse‐termination. The temporal analysis of the temperature in the AuNS and the surrounding medium, together with the spatial temperature distribution under different separation distances, elucidates the processes that drive the AuNS dimers' transient temperature distribution and heat dissipation. We report on the critical effects of geometrical parameters on the photothermal response, demonstrating that thinner shells maximize the total deposited energy per unit volume, resulting in increased temperature fields, while decreasing separation distances result in excessive field amplification due to plasmonic modes' production. Our robust numerical approach, enabling simulations with tunable material properties and configurations, may help design nanomaterials with desired features for photothermal cancer treatment and imaging.
Solid‐State Absorption, Luminescence, and Singlet Fission of Furanyl‐Substituted Diketopyrrolopyrroles with Different π‐Stacking Arrangements
Authors: Kratochvíl Matouš , Thottappali Muhammed A. , Luňák Stanislav , Pauk Karel , Rais David , Marková Aneta , Pfleger Jiří , Imramovský Aleš , Vala Martin 
Published: September 2023

AbstractSmall modifications of the diketopyrrolopyrrole (DPP) molecular structure induced remarkable changes in its spectral and photophysical behavior. Using furan (F) heterosubstitution instead of thiophene (T) substituent resulted in a small blue shift and decreased Huang‐Rhys factor of the absorption spectra in solution, irrespectively to N,N'‐alkyls. Branching of alkyl side chains by formal 2‐ethylation of n‐hexyl substituent (C6 to EH) switched the slipped‐stack arrangement, irrespectively on the heteroatoms. Consequent changes in steady‐state absorption spectra of thin films were interpreted using time dependent density functional theory calculations, carried out on model dimers. Solid‐state luminescence is weak and partially dependent on an excitation wavelength. Singlet fission was observed by femtosecond transient absorption spectroscopy, with considerably different yields for variously π‐stacked FDPP‐EH (30 %) and FDPP‐C6 (160 %). The shape of triplet‐triplet absorption spectra was also influenced by various π‐stacking. The results are discussed in terms of different mixing of both Frenkel and charge transfer states in model dimers and different excitonic and electronic coupling in both types of π‐stacks, visualized by natural transition orbitals.
A prefix‐based approach for joint Doppler and channel estimation in underwater communication
Authors: Bhadouria Vijay Singh , Agrawal Monika , Kumar Ritesh 
Published: September 2023

SummaryDeveloping a reliable and robust underwater acoustic communication system is a difficult task due to the complicated nature of the underwater channel, non‐stationary noise, and several other factors. Indeed, channel estimation or equalization presents numerous challenges in this non‐stationary, highly Doppler, multipath environment; as a result, traditional equalizers and PLL‐based methods have limited performance. Generally, communication over such time‐varying channels is accomplished via packets that contain a prefix/preamble signal for training, a payload containing the actual data, and a silent period for proper alignment. The prefix signal must be designed properly because it is used to estimate the channel and determine the start of the packet. In this paper, we propose a new prefix signal based on the hyperbolic chirp signal, which has Doppler invariance properties. These properties enable the extraction of the entire packet even under severe multipath and Doppler. Our new proposed prefix signal can accurately and efficiently characterize an underwater channel by estimating the multipath delay, amplitude, and Doppler scales. Our new method has been validated through extensive simulations using various channel models for its robustness and effectiveness under various conditions. It has also been tested on a real‐world channel.
Foxn1 is not essential for T‐cell development in teleosts
Authors: Schorpp Michael , Swann Jeremy B. , Hess Isabell , Ho Hsuan‐Ching , Pietsch Theodore W. , Boehm Thomas 
Published: September 2023

AbstractIn mammals, T‐cell development depends on the activity of the Foxn1 transcription factor in the thymic epithelium; mutations in the vertebrate‐specific Foxn1 gene are associated with profound T‐cell lymphopenia and fatal immunodeficiency. Here, we examined the extent of T‐cell development in teleosts lacking a functional foxn1 gene. In zebrafish carrying a deleterious internal deletion of foxn1, reduced but robust lymphopoietic activity is maintained in the mutant thymus. Moreover, pseudogenization or loss of foxn1 in the genomes of deep‐sea anglerfishes is independent of the presence or absence of the canonical signatures of the T‐cell lineage. Thus, in contrast to the situation in mammals, the teleost thymus can support foxn1‐independent lymphopoiesis, most likely through the activity of the Foxn4, an ancient metazoan paralog of Foxn1. Our results imply that during the early stages of vertebrate evolution, genetic control of thymopoiesis was functionally redundant and thus robust; in mammals, the genetic network was reorganized to become uniquely dependent on the FOXN1 transcription factor.
Network analyses reveal the interaction between physical features, fear of movement and neck pain and disability in people with acute and chronic whiplash‐associated disorders
Authors: Anarte‐Lazo Ernesto , Liew Bernard X. W. , Devecchi Valter , Bernal‐Utrera Carlos , Rodriguez‐Blanco Cleofas , Falla Deborah 
Published: September 2023

AbstractBackground and ObjectiveA network analysis can be used to quantitatively assess and graphically describe multiple interactions. This study applied network analyses to determine the interaction between physical and pain‐related factors and fear of movement in people with whiplash‐associated disorders (WAD) during periods of acute and chronic pain.MethodsPhysical measurements, including pressure pain‐thresholds (PPT) over neural structures, cervical range of motion, neck flexor and extensor endurance and the cranio‐cervical flexion test (CCFT), in addition to subjective reports including the Tampa Scale of Kinesiophobia (TSK‐11), Neck Disability Index (NDI) and neck pain and headache intensity, were assessed at baseline in 47 participants with acute WAD. TSK‐11, NDI and pain intensity were assessed for the same participants 6 months later (n = 45). Two network analyses were conducted to estimate the associations between features at baseline and at 6 months and their centrality indices.ResultsBoth network analyses revealed that the greatest weight indices were found for NDI and CCFT at baseline and for neck pain and headache intensity and NDI and TSK‐11 at both time points. Associations were also found betweeen cervical muscle endurance and neck pain intensity in the acute phase. Cervical muscle endurance assesssed during the acute phase was also associated with NDI after 6 months ‐ whereas PPT measured at baseline was associsated with headache intensity after 6 months.ConclusionThe strongest associations were found for headache and neck pain intensity and neck disability and fear of movement, both during acute pain and when mesured 6 months later. The extent of neck endurance and measures of PPT at baseline may be associated with neck disability and headache, respectively, 6 months after a whiplash injury.SignificanceThrough two network analyses, we evaluated the interaction between pain‐related factors, fear of movement, neck disability and physical factors in people who had experienced a whiplash injury. We demonstrated that physical factors may be involved in the maintenance and development of chronic pain after a whiplash injury. Nevertheless, the strongest associations were found for headache and neck pain intensity and neck disability and fear of movement, both during acute and chronic phases.
Epidemiological features and consequences of COVID‐19 in patients with and without gastrointestinal symptoms in southwestern Iran. A retrospective observational study
Authors: Azarbakhsh Habibollah , Moftakhar Leila , Valipour Aliasghar , Mirahmadizadeh Alireza , Moradi Hekmat Allah , Piraee Elahe 
Published: September 2023

AbstractBackground and AimsSome studies have shown that in addition to respiratory symptoms, gastrointestinal (GI) manifestations reported in patients with coronavirus disease 2019 (COVID‐19). The aim of this study was to compare the epidemiological features and consequences of COVID‐19 in patients with and without GI symptoms.MethodsThis retrospective observational study concluded on 15,323 COVID‐19 patients with GI symptoms and 95,724 patients without symptoms. All symptoms and comorbidities of the patients collected. To investigate the differences between qualitative variables in the two groups, χ2 test was used. Logistic regression analysis also used to identify determinants of mortality in patients with COVID‐19.ResultsDuring the course of the study, 111,047 cases of COVID‐19 occurred. Of these, 13.8% of patients had GI symptoms, and 9.9% of deaths due to COVID‐19 occurred in these patients. The most common reported GI symptoms among COVID‐19 patients were nausea, vomiting, and diarrhea. In addition, comorbidities, such as diabetes, cardiovascular disease, and thyroid disease were significantly higher in patients with GI symptoms. The result of multiple logistic regression showed that the chance of mortality is higher in a patient with COVID‐19 who have dyspnea, fever, cough, hypertension, cardiovascular disease, diabetes, immunodeficiency, chronic kidney disease, thyroid disease, chronic pulmonary disease, and male gender. The chance of death was lower in people with GI symptoms.ConclusionAccording to the findings of this study, nausea, vomiting, and diarrhea were the most common GI symptoms. Also, the chance of death is higher in people with co‐morbidities such as cardiovascular diseases, diabetes, and high blood pressure. Therefore, it is necessary to follow these people closely.
RFID technology usage and supply chain global positioning information sharing system: An enablers of manufacturing enterprises' supply chain performance‐fresh insights from the Middle East region as developing countries
Authors: AL‐Shboul Moh'd Anwer 
Published: September 2023

AbstractThis research aims to assess a conceptual framework that includes radio frequency identification (RFID) technology usage and integrated with supply chain (SC) global positioning information system (GPIS) as antecedents to supply chain performance (SCP). A Web‐based survey questionnaire was used for the data collection process. The research framework and the derived hypotheses were tested by structural equation modeling. Data were gathered from a sample of 314 participants who are working in manufacturing‐sector enterprises. The targeted respondents were categorized as either managers (IT, engineers, production, operations, logistics, sales, purchasing, etc.), supervisors (IT/technical/operational workers, etc.) in medium and large‐sized enterprises (MLEs) in developing countries (Jordan, Lebanon, King Saudi Arabia, Bahrain, Qatar, Emirates, Egypt, Oman, Kuwait, and Turkey). The findings of this research indicate that RFID technology usage directly affects the integration with supply chain global positioning information system (SCGPIS) and SCP. Furthermore, SCGPIS achieves enhancing information sharing among supply chain partners, which in turn leads to enhancing SCP. This research paper offers empirical evidence for using RFID technology within the planning‐resources of manufacturing enterprises' context for enhancing their SCP.
Effects of sarcopenia and frailty on postoperative recovery in elderly patients: A prospective cohort study
Authors: Guo Kedi , Wang Xinghe , Lu Xian , Yang Yuping , Lu Wensi , Wang Shuting , Tang Xihui , Wu Yan , Xu Yuqing , Chen Qingsong , Liu Su 
Published: September 2023

AbstractBackgroundSarcopenia and frailty are both age‐related declines in functional reserve that are linked to adverse health outcomes. It is critical to know about the outcomes of a combination of these conditions. The study aimed to investigate the effects of sarcopenia and frailty on postoperative recovery in elderly patients and to explore risk factors.MethodsThis prospective cohort study was conducted among 608 patients aged ≥60 years, American Society of Anesthesiologists I‐III, who were scheduled to undergo thoracic (non‐cardiac) and abdominal surgery from 1 March 2022 to 31 October 2022 at the Affiliated Hospital of Xuzhou Medical University. Frailty was measured by the 28‐item frailty index, and sarcopenia was assessed sarcopenia was assessed by skeletal muscle index in computed tomographic scan, handgrip strength and 6‐m walk. Participants were classified as follows: Group A: both sarcopenia and frailty; Group B: sarcopenia only; Group C: frailty only; and Group D: neither frailty nor sarcopenia. The primary outcome was 90‐day morbidity. Multivariable logistic regression model was used to estimate the association between sarcopenia, frailty and 90‐day morbidity.ResultsThe median (interquartile range) age of participants was 68 (64–72) years, and 62.7% were men. The prevalence rates of sarcopenia and frailty were 32.8% and 47.6%, respectively. The 90‐day morbidity in Group A was 58.5%, in Group B was 46.2%, in Group C was 42.0% and in Group D was 28.8%, and the difference was significant (P < 0.001). In the multivariable analysis, both sarcopenia and frailty [odds ratio (OR), 2.21; 95% confidence interval (CI), 1.26–3.89], sarcopenia only (OR, 1.84; 95% CI, 1.01–3.36), frailty only (OR, 1.77; 95% CI, 1.03–3.03), women (OR, 0.67; 95% CI, 0.45–0.99), body mass index (OR, 0.94; 95% CI, 0.88–0.99), pre‐operative albumin (OR, 0.96; 95% CI, 0.91–1.00) and operative stress score (OSS) [OSS 3 (OR, 2.09; 95% CI, 1.21–3.67); OSS 4–5 (OR, 3.81; 95% CI, 2.31–6.42)] were independently associated with 90‐day morbidity. In the multivariable analysis with inverse probability weighting adjusted cohort, sarcopenia and frailty were also significantly associated with 90‐day morbidity.ConclusionsSarcopenia and frailty were associated with higher risks of postoperative 90‐day morbidity in elderly patients alone and in combination. Sex, body mass index, pre‐operative albumin and operative stress were also independent factors for postoperative morbidity within 90 days.
Molecular epidemiology of SARS‐CoV‐2 variants in circulation in the state of Maranhão, Brazil
Authors: de Sousa Luis Artur Ferreira , Ferreira Lucas Salomão de Sousa , Lobato Luis Felipe Lima , Ferreira Hivylla Lorrana dos Santos , Sousa Lucas Henrique dos Santos , Santos Valdenice Ferreira dos , Nunes Paulo Ricardo Silva , Maramaldo Carlos Eduardo Campos , Neto Sebastião Silveira , Sampaio Hellen Lobato , Silva Fabiano Vieira da , Brito Marcelo da Costa , Lima Washington Kleber Rodrigues , Lima Claudia Zeneida Gomes Parente Alves , Neto Lidio Gonçalves Lima 
Published: September 2023

AbstractSevere acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) is a coronavirus belonging to the beta CoV genus, responsible for SARS in humans, which became known as COVID‐19. The emergence of variants of this virus is related to the presence of cases of reinfection, reduced vaccine effectiveness and greater transmission of the virus. Objective: In this study, we evaluated the molecular epidemiology of SARS‐CoV‐2 lineages circulating in the state of Maranhão. This is a cross‐sectional and retrospective epidemiological study of genomic surveillance of SARS‐CoV‐2. The study comprised of 338 genomes sequenced by the Next Generation Sequencing technique on Illumina's Miseq equipment, submitted to Global Initiative on Sharing Avian Influenza Data, 190 (56.2%) are from samples of female and 148 (43.8%) from male patients. Sequencing performed covered samples of patients aged between 1 and 108 years, with emphasis on the age groups from 30 to 39 years with 15.0% of sequenced genomes and 20 to 29 years with 12.4%. As for the distribution of sequenced genomes by health macro‐regions, 285 (84.3%) are from cities in the northern macro‐region. We evidenced the circulation of 29 lineages and sub‐lineages, four of which belonging to the Delta variant (AY.43, AY.99.1, AY.99.2 and AY.101 responsible for 4.5% of the genomes) and the others belonging to the Omicron variant, with emphasis on: BA.1 and sub‐lineages (42.8%); BA.4, BA.5 and sub‐lineages (5.3% and 41.1%); the sub‐lineages DL.1 and BQ.1 (5% and 2%). A strong genomic surveillance system allows the study of the natural history of the disease, when there is a resurgence of SARS‐CoV‐2 cases.
Composites of cis‐ and trans‐polyisoprene blend filled with silver nanoparticles: Dynamic mechanical, mechanical, and thermal analysis
Authors: Baboo Mahesh , Kumar Satish , Kumar Bishen , Sharma Kananbala 
Published: September 2023

AbstractIn this article, polymer nanocomposites of polyisoprene with specific blend ratio 25/75 wt% of cis‐polyisoprene (CPI) and trans‐polyisoprene (TPI) with varying concentration (0.1, 1, and 5 wt%) of so synthesized silver nanoparticles (AgNPs) have been prepared and characterized through x‐ray diffraction, transmission electron microscope and scanning electron microscope. Experimental results on dynamic mechanical analysis show that addition of AgNPs to CPI/TPI blend reduces storage modulus, activation energy and fragility while enhances damping, however, glass transition temperature remains unaffected. Other mechanical properties such as toughness and tensile strength first increases on addition of AgNPs in the CPI/TPI blend, but a decrease is noticed on further increase of AgNPs concentration. Young's modulus shows a drastic decrease on addition of AgNPs into CPI/TPI blend, however, an increase is observed at higher concentration of AgNPs. Thermal analysis results show that thermal conductivity enhances with the enhancement in concentration of AgNPs into CPI/TPI blend.Highlights
Addition of AgNPs into CPI/TPI blend reduces storage modulus, activation energy and fragility
Incorporation of AgNPs into CPI/TPI blend enhances damping but does not change glass transition temperature.
Increase in concentration of AgNPs in CPI/TPI blend increases the thermal conductivity.
Unlocking the potential of responsible management education through interdisciplinary approaches
Authors: Martins Flavio , Cezarino Luciana , Liboni Lara , Hunter Trevor , Batalhao Andre , Paschoalotto Marco Antonio Catussi 
Published: September 2023

AbstractBusiness schools are crucial to integrating sustainable development into management thought and practices, thereby promoting a paradigm shift toward responsible management education. Despite many business schools pledging to adopt the United Nations' Principles for Responsible Management Education, they have been criticized for failing to develop change agents toward sustainability. To fill this gap, this paper demonstrates how interdisciplinarity can be connected to responsible management education through critical and instrumental perspectives. To this end, we apply an interdisciplinarity model to 37 Principles for Responsible Management Education Schools' Reports, using content analysis, text‐mining, and network theory tools. As a result, our findings suggest: (i) a taxonomy of critical and instrumental interdisciplinary studies and (ii) a framework of Principles for Responsible Management Education schools engaged in critical and instrumental interdisciplinarity. The framework we develop can serve as a diagnostic and prognostic tool for assessing how interdisciplinary can improve responsible management education in business schools. Our findings contribute to theory advancing research on the intersection of responsible management education and interdisciplinary approaches.
Magnetic‐optical dual functional Janus particles for the detection of metal ions assisted by machine learning
Authors: Liu Jianhang , Lv Yingdi , Li Xinghai , Feng Shi , Yang Wenbo , Zhou Yumeng , Tao Shengyang 
Published: September 2023

AbstractFunctional polymer microspheres have broad application prospects in various fields, such as metal ion detection, adsorption, separation, and controlled drug release. However, integrating different functions in a single microsphere system is a significant challenge in this field. In this work, we prepared multicompartmental emulsion droplets utilizing microfluidic technology. Fe3O4 magnetic nanoparticles were added to one of the compartments of the emulsion droplets as functional particles, and Janus microspheres were obtained after curing. Fluorescent probes enter the two compartments of the Janus microspheres by diffusion. The fluorescence changes of the microspheres were observed in situ and captured through a fluorescence microscope. The images are processed by image recognition software and a Python program. The “fingerprint” of the detected metal ions is obtained by dimensionality reduction of the data through Principal Component Analysis. We employ different algorithms to build Machine Learning models for predicting the metal ion species and concentration. The variation of fluorescence intensity of the three fluorescent probes and the corresponding R, G, and B channel values and time are used as descriptors. The results show that the Random Forest, K‐neighborhood (KNN), and Neural Network models demonstrated a better predicted effect with a variance (R2) greater than 0.9 and a smaller root mean square error; among them, the KNN model predicted the most accurate results.