bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mechanical performance and swelling resistance of silicone rubber reinforced with γ- methacryloxypropyltrimethoxysilane modified halloysite nanotubes
Authors: K Govindan , S Ramabalan , S Vishvanathperumal 
Published: August 2023

AbstractThe halloysite nanotubes (HNTs) experienced a satisfactory surface treatment with γ-methacryloxypropyltrimethoxysilane (γ-MPS), which facilitated interaction with the aluminol and silanol groups found on the edges and surfaces of the nanotubes. The modified HNTs (mHNTs) were used to create silicone rubber vulcanizate nanocomposites. The modification of -MPS was used to improve the interactions between surfaces and tubules. This improvement led to a higher crosslinking density and better HNT dispersion inside the silicone rubber matrix. To assess the effect of mHNTs loading on various features of the resultant rubber nanocomposites, a comprehensive analysis was carried out. The following parameters were studied: cure characteristics, compression set, swelling behavior, abrasion resistance, and mechanical properties. To accomplish this, the oscillating disc rheometer (ODR), solvent immersion technique, DIN abrader, and tensile testing were employed for precise measurements. Overall, the characteristics and performance of the silicone rubber nanocomposites were significantly enhanced by the addition of mHNTs. This study demonstrates the efficacy of mHNTs as reinforcing agents and creates new avenues for strengthening silicone rubber-based material qualities in a variety of applications. The nanocomposites' tensile modulus, strength, and rip strength were all improved by the addition of mHNTs. Furthermore, the silicone rubber/mHNTs nanocomposites exhibit enhanced swelling resistance as a result of the powerful inter-tubular contact they possess. The obtained results were analyzed in relation to the microstructure of the samples, as examined through FESEM analyses.
Characterization and Static Responses of Partially Biodegradable Hybrid Composites: Experimental and Numerical Analysis
Authors: Rout Itishree , Mahapatra Trupti Ranjan , Mishra Debadutta , Parimanik Soumya Ranjan 
Published: August 2023

Abstract
The present work deals with the mechanical characteristics and deflection responses of novel partially biodegradable hybrid composites embracing an animal based (Human Hair), a plant based (Luffa Cylindrica) fiber (denoted as HHF and LCF) and Incense Stick Ash (ISA) under different loadings. Ultrasonicator assisted hand lay-up technique has been followed for the inhouse fabrication process by incorporating epoxy resin as the matrix material while varying weight ratios (0, 5, 10, 15, and 20 wt.%) of ISA filler. Firstly, the density, elastic properties through non-destructive Impulse Excitation Technique (IET), microhardness, strengths under tensile, bending and impact loading are obtained and the surface morphology of fractured surfaces is studied. The composite filled with 10 wt.% ISA shown the best overall tensile, bending and shear properties, while the highest flexural strength and microhardness is depicted by composite filled with 20 wt.% ISA. Subsequently, finite element (FE) analysis using a simulation model in ANSYS is employed to acquire the tensile and flexural strength, those are found to be comparable with the experimental values. Finally, a higher-order nonlinear FE model is developed and implemented using MATLAB programming platform to compute the static responses under different loads (point load, sinusoidally distributed line load, uniformly distributed line load, uniformly distributed load and sinusoidally distributed load) using the experimentally obtained composite material properties. The validity of the developed model has been tested by comparing the results with the data acquired through lab-scale experimentation. From the numerical illustrations, moderate ISA filled (10 wt.%) composites with higher aspect ratio and lower thickness ratio are observed to provide more significant resistance to deflection under static loading.
Research on Multi-model Mask Video Caption based on Transformer
Authors: Peng Yuqing , 姚 昊 , Ji Xinhao , Gao Xuan 
Published: August 2023

Abstract
Previous work on video caption has mainly focused on visual information in the video, neglecting the audio information. This differs from how humans perceive the world by simultaneously processing and integrating multiple modalities. This paper proposes a novel multimodal masked video captioning model (MMVC) that uses a new Transformer model to integrate both the audio modality, which contains rich semantic association information, and the masked video frame image modality. By studying different fusion stages and strategies, a new fusion strategy is proposed that improves model performance while reducing the computational cost. Experiments on the MSVD and MSR-VTT datasets show that the audio modality contains complementary information that effectively improves video caption performance and metrics.
Potential pathway for reusing Paper Mill Sludge Ash as a Supplementary Material in Alkali-Activated Bricks
Authors: Ramasamy Vetturayasudharsanan , Kumarasamy Vidhya 
Published: August 2023

Abstract

Alkali-activated bricks are considered a sustainable alternative in masonry construction. These bricks are produced by reacting the waste materials in an alkaline environment using alkali activators such as sodium silicate and sodium hydroxide. In this study, our objective is to explore the viability of manufacturing alkali-activated bricks using industrial waste materials, specifically by fly Ash, Paper Mill Sludge Ash (PMSA), and Crusher Sand Dust (CSD). To reduce the reliance on fly ash, alkali-activated bricks are manufactured by substituting PMSA in two different melds. The first meld is performed to optimize the PMSA and the second meld is carried out to optimize the Crusher Sand Dust (CSD) as filler material. Meld 3 is used to investigate the impact of the NaOH molarity of the bricks ranging from 6 M to 14 M for the optimum proportions obtained from Melds 1 and 2. XRD, FT-IR, TGA, and SEM analyses were carried out to understand the mineralogical and chemical characterization of the raw materials and brick specimens. Furthermore, various tests were conducted on the bricks to assess their physio-mechanical properties, following the relevant standards outlined in IS requirements. Overall, this study demonstrates the feasibility of producing alkali-activated bricks by utilizing industrial waste materials. These findings offer promising prospects for creating sustainable construction materials while effectively addressing the issue of waste disposal.
Prevalence and Risk Factors of Wellens Syndrome in Patients with Acute Coronary Syndrome
Authors: Mohamed Sami , Abdelaziz Samoal 
Published: August 2023

Abstract
Background
Wellens syndrome complicates acute coronary syndrome and, if unmanaged, can lead to immanent myocardial infarction. This study aimed towards determining the prevalence of Wellens syndrome among acute coronary syndrome patients while focusing on both types and identifying the most associated risk factor, then determining the commonest coronary artery affected in those who fulfilled Wellens syndrome criteria.
Methods
Implementing a descriptive cross sectional hospital based observational study design at Ahmed Gasim Teaching Hospital for Cardiac Surgery and Renal Transplantation in Khartoum North, Sudan, the study was conducted using a non probability convenience sampling of patients fitting the inclusion criteria. Data was collected using closed ended structured questionnaires. Ethical clearance was obtained from relevant authorities. Data analysis was done using descriptive and comparative data analysis with the aid of the SPSS software.
Results
A total of 120 patients were included, 70 males and 50 females, majority in their fifth decade. 14 patients had no documented risk factors. 42.5% had STEMI, 34.2% had NSTEMI and 23.3% had unstable angina. Patients fulfilling Wellens syndrome criteria were 18 (15%), 44.4% of them were type A and 55.6 were type B. Specific prevalence among NSTEMI alone was 29.3% and 21.4% among unstable angina alone. Most frequently encountered risk factor among Wellens syndrome patients was Diabetes (50%). Out of 16 Wellens syndrome patients who underwent coronary angiography, 50% had mid LAD involvement, most were of type B; 25% had proximal LAD involvement and 25% had normal coronary angiography. There was significant association between Wellens syndrome and NSTEMI, but no significant association with any specific risk factor.
Conclusion
Wellens syndrome is not a rare condition although uncommon, it can present even without a specific predisposing risk factor and coronary angiographic variation other than the proximal part of the LAD artery may occur.
Metabolic and Immune Consequences of Antibiotic Related Microbiome Alterations during first-line Tuberculosis Treatment in Bamako, Mali
Authors: Diallo Dramane , Sun Shan , Somboro Anou Moise , Baya Bocar , Kone Amadou , Diarra Bassirou , Nantoume Mohamed , Koloma Isaac , Diakite Mahamadou , Holl Jane , Maiga Almoustapha Issiaka , Seydi Moussa , Theron Grant , Hou Lifang , Fodor Anthony , Maiga Mamoudou 
Published: August 2023

Abstract
Background
Tuberculosis (TB) infection is known to lead to the unbalance of the gut microbiota and act synergistically on the decline of the host immune response, when untreated. Moreover, previous work has found a correlation between dysbiosis in the gut microbiota composition and the use of antibiotics. However, there is a need for an in-depth understanding of the metabolic and immune consequences of antibiotic-related microbiome alterations during first-line TB treatment.
Methods
In a longitudinal cohort study, which included TB-infected cohorts and healthy individuals (control group), we studied the anti-TB-related changes in the gut microbiota composition and related functional consequences. Sputum, whole blood and stool samples were collected from participants at four time-points including before (Month-0), during (Month-2), at the end of drug treatment (Month-6) and 9 months after treatment (Month-15). Controls were sampled at inclusion and Month-6. We analyzed the microbiota composition and microbial functional pathways with shotgun metagenomics, analyzed the blood metabolomics using high-performance liquid chromatography (HPLC), and measured the levels of metabolites and cytokines with cytometric bead array.
Results
We found that the gut microbiota of patients infected with TB was different from that of the healthy controls. The gut microbiota became similar to healthy controls after treatment but was still significantly different after 6 months treatment and at the follow up 9 months after treatment. Our data also showed disturbance in the plasma metabolites such as tryptophan and tricarboxylic acids components of patients during TB treatment. Levels of IL-4, IL-6, IL-10, and IFN-γ decreased during treatment and levels were maintained after treatment completion, while IL-17A known to have a strong link with the gut microbiota was highly expressed during treatment period and longer than the 9-month post treatment completion. We found that some fatty acids were negatively correlated with the abundance of taxa. For example, Roseburia, Megasphaera, and alpha proteobacterium HIMB5 species were negatively correlated (rho = -0.6) with the quinolinate production.
Conclusion
Changes in the composition and function of gut microbiota was observed in TB patients before and after treatment compared to healthy controls. The differences persisted at nine months after treatment completion. Alterations in some bacterial taxa were correlated to the changes in metabolite levels in peripheral blood, thus the altered microbial community might lead to changes in immune status that influence the disease outcome and future resistance to infections.
Impact of the COVID-19 pandemic on psychosocial outcomes among women experiencing breast health delays in New York City
Authors: Fasano Genevieve A. , Bayard Solange , An Anjile , Pinheiro Laura C. , Rosenberg Shoshana M. , Mount Lauren , Malik Manmeet , Newman Lisa , Tamimi Rulla M. , Bea Vivian J. 
Published: August 2023

AbstractPurpose:Reallocation of healthcare resources during the beginning of the COVID-19 pandemic resulted in delays for breast cancer care. Data are sparse regarding the impact of these delays on psychosocial outcomes.Methods:This cross-sectional study utilized validated instruments to measure psychosocial outcomes of women with and without breast cancer experiencing healthcare delays.Results:The study population was comprised of 30 (35%) recently diagnosed breast cancer patients, 24 (28%) women without cancer, and 31 (36%) breast cancer survivors (n = 85). Overall, 58% reported a delay in breast health care. Compared to those who did not report any delays, women with delays had higher levels of anxiety, (78% vs. 58%; p = 0.059), perceived stress (45% vs. 28%; p = 0.17), loneliness (67% vs. 32%; p = 0.003), and depression (16% vs. 8.3%; p = 0.34); and no or low emotional support (58% vs. 28%; p = 0.008).Conclusion:Women with and without breast cancer experiencing a healthcare delay reported more symptoms of anxiety, depression, perceived stress, and loneliness, and less emotional support. Longer time to treatment was experienced by breast cancer patients with higher levels of psychosocial morbidity. When future healthcare resource constraints lead to substantial treatment delays, providers should consider the psychosocial impacts of these delays and consider systematic screening to identify patients in need of additional support.
Effects of drop jump training on physical fitness in youth male volleyball players: Comparing maximal rebound height vs fixed drop height training
Authors: Hammami Raouf , Ayed Karim Ben , Ramirez-Campillo Rodrigo , Duncan Michael , Rebai Haithem , Granacher Urs 
Published: August 2023

Abstract

Background
It has previously been shown that drop jump height is an effective programming parameter in plyometric jump training. Less is known on the usage of maximal rebound jump height from a distinct drop height as a parameter for individualized plyometric jump training.
Aim
This study examined the effects of 8-weeks of two drop jump (DJ) training modalities using maximal rebound height (MRHT) vs fixed (FDHT) drop height programming approaches on selected measures of physical fitness in young volleyball players.
Methods
Thirty male youth volleyball players aged 14 to 16 years were randomly assigned to a MRHT (n = 15) or a FDHT (n = 15) group. The MRHT group performed DJ exercises using a drop height according to the individual’s maximal rebound jump height from 20-cm, 30-cm, 40-cm, and 50-cm drop heights. The FDHT group performed DJs following a standardized drop height (30-cm) across the 8-week intervention period. The overall training volume was similar between MRHT and FDHT with 3 sets of 10 repetitions of DJ exercises per session. Pre- and post-training, DJs were tested from 30, 40, and 50-cm drop heights. In addition, dynamic balance (Y-balance test) as well as linear sprint and change-of-direction (CoD) speed were assessed.
Results
Significant group-by-time interactions were found for DJ, balance, and linear sprint tests (p < 0.0001; d = 0.12–0.88) but not for CoD speed. Post-hoc tests showed significant improvements in favor of the MRHT group for DJ heights from 30-cm (Δ20.4%, p < 0.0001, d = 6.31), 40-cm DJ (Δ20.3%, p < 0.0001, d = 3.46), 50-cm DJ (Δ18.3%, p < 0.0001, d = 4.99), 5-m (Δ9.2%, p < 0.001, d = 1.21) and 20-m (Δ7.4%, p < 0.01, d = 1.60) linear sprint speed.
Conclusions
MRHT is a safe and effective training regime to improve DJ and linear sprint speed performance. Due to the importance of vertical jumps and short accelerations for overall competitive performance in volleyball, our results suggest that young male players should perform MRHT as part of plyometric jump training if the goal is to improve acceleration and vertical jump performance.
Effects of metacognitive strategies on listening comprehension through multimedia supported instruction
Authors: Cheng Hao Yuan 
Published: August 2023

Abstract

This study examined the impact of multimedia-assisted instruction with the awareness of metacognitive strategies on students’ performance in listening comprehension in English as a foreign language (EFL) classroom. The findings indicated that YouTube videos and podcasts had different effects on the participants’ performance. The results for YouTube showed significant differences only in the first and last tests, with an improvement rate of 14.7%, indicating that YouTube assisted instruction provided certain advantages for the students with visual learning style. On the other hand, tests for the podcast condition showed significant differences for in every pair, with an improvement rate of 49.7%, suggesting that most students were auditory learners who relied more on audio for comprehension. The results also indicated that students’ prior knowledge and competence played a significant role in their listening comprehension. Furthermore, the study found that English reading, speaking, and writing were equally challenging for the participants, and they felt anxious when coping with listening comprehension questions. However, the use of multimedia instruction, infused with metacognitive strategies, motivated students to become better language learners and take more responsibility for their learning. The multimedia instruction involved authentic and engaging listening materials, opportunities for self-paced and interactive practice, and enhanced motivation and engagement. Overall, the use of multimedia instruction in EFL classrooms can have significant benefits for learners’ listening comprehension, language proficiency, and motivation to learn.
OSL dating of fault gouges from the Atotsugawa Fault, Japan: Insights into partial resetting conditions by earthquakes
Authors: Tsukamoto Sumiko , Guralnik Benny , Prince Erick , Oohashi Kiyokazu , Otsubo Makoto 
Published: August 2023

Abstract

Optically stimulated luminescence (OSL) dating utilises the detection of trapped charge in minerals, and have ultralow closure temperatures. There is the potential for direct dating of fault movement using this method, because frictional heating caused by large earthquakes can reduce the signal intensity. In this study, we conducted quartz OSL dating on four fault gouge and breccia samples from a surface outcrop of the Atotsugawa Fault, one of the most active dextral strike-slip faults in central Japan, where the last large earthquake occurred in AD1858, with an estimated magnitude of 7. The natural OSL signal intensity of fine-grained quartz was clearly below the signal saturation level, with the fraction of saturation (n/N) between 0.34 ± 0.04 and 0.42 ± 0.07. Quartz OSL ages range from 21 ± 2 to 70 ± 3 ka, two orders of magnitude older than the age of the last earthquake, suggesting that the past earthquakes only partially reset the OSL signal. We calculate the mean storage temperature of the samples to be 53 ± 2°C, which reflects past fault activity. Using the known recurrence interval of faulting to be 2.5 ka, the OSL ages, and the thermal stability parameters of the signal, we deduce partial resetting conditions.
A hemagglutinin and neuraminidase biased immunological memory shapes the dynamics of antibody responses to Influenza A virus
Authors: Wong Sook-san , Lin Xia , Wang Jiaqi , Ling Shiman , Xiao Cheng , Liang Zaolan , Bai Yaqin , Xiao Biying , Yang Bingyi , Cowling Benjamin , Webby Richard , Zanin Mark 
Published: August 2023

Abstract
As influenza A virus (IAV) infection establishes a more diverse immunological memory to different viral proteins compared to vaccination, we hypothesize that this could skew antibody responses to immunizing antigens after infection. To explore this, we generated mouse models that possess either an IAV hemagglutinin (HA)- or neuraminidase (NA)-biased immunological memory by simultaneously or, sequentially-inoculating them with cocktails of isogenic viruses bearing four antigenically-distinct HA (H3v) or NA (N2v), that spans the IAV H3N2 human circulation history. Cocktail priming elicited comparable antibody responses to all immunizing antigens, whilst responses in sequentially-inoculated mice were antigen-dependent. We then challenged the mice with two H3N2 strains of opposing virulence and antigenic distance and examined the post-infection antibody landscapes. In both models, antibody increases after the two challenges occurred to antigenically-related, and not against antigenically-distant, HAs or NAs for which baseline titers were low. H3-imprinted mice seroconverted to challenge NA, but not HA, and vice versa. In primed mice, the antibody response was directed to the viral target with low pre-existing immunity, despite high titers of protective antibodies and no signs of symptomatic infections, while immune-naïve mice seroconverted to both HA and NA. Our findings show that the dynamics of antibody responses to HA and NA after infection can be altered by pre-existing immunity, i.e the “antibody ceiling effect” does not imply no-response, simply a "misdirected" response, to an antigenically-related antigen or an alternate viral protein. These results have implications on our seroepidemiological studies as well as our understanding of immune correlates of protection in populations with different influenza immune histories.
Combining bucketization and information hidden vector techniques in building an efficient range query scheme on encrypted numerical data
Authors: Hoang Canh Ngoc , Nguyen Minh Hieu , Nguyen Thuy Thu Thi , Tran Danh Kim Le 
Published: August 2023

Abstract
This research intends to propose a new method for executing queries with an efficient range of encrypted data. The efficiency of the method is represented through several aspects, such as the ability to support high-speed range queries, removing false-positive records in the returned result set after making queries, and preventing leakage of plaintext data on the outsourced databases. The approach to solving here is based on three steps. In the first step, we improve the technique of partitioning data to create buckets with more security and fewer false positives while still supporting indexing when searching in database management systems. Second, the research proposes a new structure called the information hiding vector (IHV) to encode bucket values in a form that allows comparison without revealing the order. In the last step, we build a special IHV_B+ Tree at the outsourced database based on the plain values and bucket values and then encode the values in the node of the tree with the IHV. The entire process is described in an SSE schema that we propose a so-called efficient search index tree - searchable symmetric encryption (ESIT-SSE).