bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis of activated carbon composited with Egyptian black sand for enhanced adsorption performance toward methylene blue dye
Authors: Elkholy Ahmed Salah , Yahia Mohamed Saber , Elnwawy Mohamed Abdelsamei , Gomaa Hosny Anwar , Elzaref Ahmed Shafek 
Published: March 2023

AbstractThe present study reports the feasibility of the synthesis of a novel porous composite adsorbent, prepared from olive stone activated carbon (OS400) and garnet (GA) mineral impregnations (referred to as OSMG). This composite (OSMG) was applied for its ability to adsorb a macromolecular organic dye. The composite’s structural characteristics were evaluated using various techniques such as Brunauer–Emmett–Teller (BET), Scanning Electron Microscopy equipped with Energy Dispersive X-ray spectroscopy (SEM–EDX), X-ray diffraction (XRD), and a Fourier transform infrared spectrometer (FT-IR). The specific surface area of the garnet (GA), (OS400), and (OSMG) were found to be 5.157 mg⋅g−1, 1489.598 mg⋅g−1, and 546.392 mg⋅g−1, respectively. The specific surface area of the new composite (OSMG) was promoted to enhance the adsorption of methylene blue (MB). Experiments were conducted under various conditions, including contact time, initial dye concentration, adsorbent dosage, pH, and temperatures. Data from these experiments were analyzed using several adsorption models including Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich (D-R). The results indicated that, the adsorption fit best with the Freundlich model and that the adsorption process followed a pseudo-second-order kinetic mechanism. Additionally, the thermodynamic analysis indicated the adsorption of MB onto garnet(GA) adsorbents is endothermic, while the sorption onto (OS400) and (OSMG) is an exothermic and non-spontaneous process. The OSMG composite can be used for at least five cycles without significant loss of adsorptive performance, and can easily be separated from the water after treatment.
Recursive bit assignment with neural reference adaptive step (RNA) MPPT algorithm for photovoltaic system
Authors: Hegazy Eman , Shokair Mona , Saad Waleed 
Published: March 2023

AbstractRecent research has focused on photovoltaic (PV) systems due to their important properties. The efficiency of the PV system can be enhanced by many Maximum Power Point Tracking (MPPT) algorithms proposals. MPPT algorithms are used to achieve maximum PV output power by optimizing the duty cycle of the DC–DC buck/boost converter. This paper introduces an RNA algorithm as an efficient MPPT algorithm for the photovoltaic system. This proposed RNA algorithm consists of two main segments. The first segment is an artificial neural network for generating reference power. The second segment is a proposed Recursive Bit Assignment (RBA) network to allow variable step size of the boost converter duty cycle. The instant PV power adopts the RBA network to produce the variable duty cycle increment value. Additionally, the neural network is implemented in such a way to obtain the best performance. Many simulation results using MATLAB to test the system performance are presented. The performance characteristics of the photovoltaic system with variable irradiance and variable temperature are simulated. From results, the proposed RNA algorithm achieves fast tracking time, high energy efficiency, true maximum power point and acceptable ripple. Additionally, comparisons between the RNA algorithm and other related algorithms such as Perturb and Observe, the Neural Network and the Adaptive Neural Inference System Algorithms are executed. The proposed RNA algorithm achieves the best performance in all case studies such as; irradiance profile variation, severe temperature and irradiance diversions, and partial shading conditions. Besides, the experimental circuit of the PV system is also presented.
Analytical and clinical validity of wearable, multi-sensor technology for assessment of motor function in patients with Parkinson’s disease in Japan
Authors: Oyama Genko , Burq Maximilien , Hatano Taku , Marks William J. , Kapur Ritu , Fernandez Jovelle , Fujikawa Keita , Furusawa Yoshihiko , Nakatome Keisuke , Rainaldi Erin , Chen Chen , Ho King Chung , Ogawa Takashi , Kamo Hikaru , Oji Yutaka , Takeshige-Amano Haruka , Taniguchi Daisuke , Nakamura Ryota , Sasaki Fuyuko , Ueno Shinichi , Shiina Kenta , Hattori Anri , Nishikawa Noriko , Ishiguro Mayu , Saiki Shinji , Hayashi Ayako , Motohashi Masatoshi , Hattori Nobutaka 
Published: March 2023

AbstractContinuous, objective monitoring of motor signs and symptoms may help improve tracking of disease progression and treatment response in Parkinson’s disease (PD). This study assessed the analytical and clinical validity of multi-sensor smartwatch measurements in hospitalized and home-based settings (96 patients with PD; mean wear time 19 h/day) using a twice-daily virtual motor examination (VME) at times representing medication OFF/ON states. Digital measurement performance was better during inpatient clinical assessments for composite V-scores than single-sensor–derived features for bradykinesia (Spearman |r|= 0.63, reliability = 0.72), tremor (|r|= 0.41, reliability = 0.65), and overall motor features (|r|= 0.70, reliability = 0.67). Composite levodopa effect sizes during hospitalization were 0.51–1.44 for clinical assessments and 0.56–1.37 for VMEs. Reliability of digital measurements during home-based VMEs was 0.62–0.80 for scores derived from weekly averages and 0.24–0.66 for daily measurements. These results show that unsupervised digital measurements of motor features with wrist-worn sensors are sensitive to medication state and are reliable in naturalistic settings.Trial Registration: Japan Pharmaceutical Information Center Clinical Trials Information (JAPIC-CTI): JapicCTI-194825; Registered June 25, 2019.
Challenging the Kauzmann paradox using an ultra-stable perfluoropolymer glass with a fictive temperature below the dynamic VFT temperature
Authors: El Banna Amer A. , McKenna Gregory B. 
Published: March 2023

AbstractUltra-stable fluoropolymer glasses were created using vacuum pyrolysis deposition that show large fictive temperature Tf reductions relative to the glass transition temperature Tg of the rejuvenated material. Tf was also found to be 11.4 K below the dynamic VFT temperature TVFT. Glass films with various thickness (200–1150 nm) were deposited onto different temperature substrates. Glassy films were characterized using rapid-chip calorimetry, Fourier-transform infrared spectroscopy and intrinsic viscosity measurements. Large enthalpy overshoots were observed upon heating and a Tf reduction of 62.6 K relative to the Tg of 348 K was observed. This reduction exceeds values reported for a 20-million-year-old amber and another amorphous fluoropolymer and is below the putative Kauzmann temperature TK for the material as related to TVFT. These results challenge the importance of the Kauzmann paradox in glass-formation and illustrates a powerful method for the exploration of material dynamics deep in the glassy state (Tf < T < Tg).
Urinary bio-monitoring of aromatic amine derivatives by new needle trap device packed with the multi-component adsorbent
Authors: Rahimpoor Razzagh , Murtada Khaled , Firoozichahak Ali , Pashaei Babak , Soleymani-ghoozhdi Danial , Serkan Houman , Mehregan Faeze , Alizadeh Saber 
Published: March 2023

AbstractAromatic amines are a large group of chemical compounds that have attracted the attention of researchers due to their toxicity and carcinogenicity. This study aimed to develop an efficient method for sampling and analysis of aromatic amines (Aniline, N, N-dimethylaniline, 2-chloroaniline, and 3-chloroaniline) from the vapour phase (headspace) of urine samples. For the implementation of this plan, a needle trap device packed with the three-component adsorbent consisting of nano-Hydroxy Apatite (nHA), Zeolite (Ze), and Metal–Organic Framework (MOF) equipped with GC-FID was employed for the first phase. Examination of the prepared adsorbents was performed by FT-IR, PXRD, and FE-SEM techniques. The optimal value of considerable parameters such as time and temperature of extraction, salt content, and pH were established using the Response Surface Methodology-Central Composite Design (RMS-CCD) method. In this way, the optimal extraction of targeted analytes was accomplished in 41 min at 41 °C with NaCl content of 33.0% (w/v) and pH: 13.0, respectively. Also, the repeatability and reproducibility of the method were calculated to be in the range of 2.2–7.1% and 3.9–8.1%, respectively, which indicates the acceptable precision of the method. Also, the limit of detection (LOD) and limit of quantification (LOQ) were determined in the range of 0.3–32.0 ng.L−1 and 0.8–350.0 ng.L−1, respectively, which proves the high sensitivity of the proposed method. Furthermore, the recovery percent of the extracted analytes was concluded in the range of 97.0–99.0% after 6 and 30 days of the sampling and storage at 25 °C and 4 °C, respectively. Finally, the designed procedure was employed in the analysis of the above-mentioned aromatic amines in the real urine samples. The achieved results illustrate that the three-component absorbent system (nHA;Ze;MOF@NTD) can be introduced as an efficient, fast-response, sensitive, and versatile procedure for trace analysis of the different aromatic amine compounds in public and occupational health.
Histological and transcriptomic analysis of muscular atrophy associated with depleted flesh pigmentation in Atlantic salmon (Salmo salar) exposed to elevated seawater temperatures
Authors: Vo Thu Thi Minh , Amoroso Gianluca , Ventura Tomer , Elizur Abigail 
Published: March 2023

AbstractTasmania is experiencing increasing seawater temperatures during the summer period which often leads to thermal stress-induced starvation events in farmed Atlantic salmon, with consequent flesh pigment depletion. Our previous transcriptomic studies found a link between flesh pigmentation and the expression of genes regulating lipid metabolism accompanied by feeding behavior in the hindgut. However, the impact of prolonged exposure to elevated water temperature on muscle structural integrity and molecular mechanisms in muscle underlying pigment variation has not been elucidated to date. In this study, we investigated the effect of prolonged exposure to elevated water temperature on the farmed salmon flesh pigmentation and structural integrity, using muscle histological and transcriptomic analysis. On April 2019, after the end of the summer, two muscle regions of the fish fillet, front dorsal and back central (usually the most and least affected by depletion, respectively), were sampled from fifteen fish (weighing approximately 2 kg and belonging to the same commercial population split in two cages). The fish represented three flesh color intensity groups (n = 5 fish per group) categorized according to general level of pigmentation and presence of banding (i.e. difference in color between the two regions of interest) as follows: high red color-no banding (HN), high red color-banded (HB) and Pale fish. Histological analysis showed a distinction between the flesh color intensity phenotypes in both muscle regions. Muscle fibers in the HB fish were partly degraded, while they were atrophied and smaller in size in Pale fish compared to HN fish. In the Pale fish, interstitial spaces between muscle fibers were also enlarged. Transcriptomic analysis showed that in the front dorsal region of the HN fish, genes encoding collagens, calcium ion binding and metabolic processes were upregulated while genes related to lipid and fatty acid metabolism were downregulated when compared to HB fish. When comparing the back central region of the three phenotypes, actin alpha skeletal muscle and myosin genes were upregulated in the HN and HB fish, while tropomyosin genes were upregulated in the Pale fish. Also, genes encoding heat shock proteins were upregulated in the HN fish, while genes involving lipid metabolism and proteolysis were upregulated in the Pale fish. Starvation, likely caused by thermal stress during prolonged periods of elevated summer water temperatures, negatively affects energy metabolism to different extents, leading to localized or almost complete flesh color depletion in farmed Atlantic salmon. Based on our results, we conclude that thermal stress is responsible not only for flesh discoloration but also for loss of muscle integrity, which likely plays a key role in pigment depletion.
Single-shot wavelength-multiplexed phase microscopy under Gabor regime in a regular microscope embodiment
Authors: Micó Vicente , Rogalski Mikołaj , Picazo-Bueno José Ángel , Trusiak Maciej 
Published: March 2023

AbstractPhase imaging microscopy under Gabor regime has been recently reported as an extremely simple, low cost and compact way to update a standard bright-field microscope with coherent sensing capabilities. By inserting coherent illumination in the microscope embodiment and producing a small defocus distance of the sample at the input plane, the digital sensor records an in-line Gabor hologram of the target sample, which is then numerically post-processed to finally achieve the sample’s quantitative phase information. However, the retrieved phase distribution is affected by the two well-known drawbacks when dealing with Gabor’s regime, that is, coherent noise and twin image disturbances. Here, we present a single-shot technique based on wavelength multiplexing for mitigating these two effects. A multi-illumination laser source (including 3 diode lasers) illuminates the sample and a color digital sensor (conventional RGB color camera) is used to record the wavelength-multiplexed Gabor hologram in a single exposure. The technique is completed by presenting a novel algorithm based on a modified Gerchberg–Saxton kernel to finally retrieve an enhanced quantitative phase image of the sample, enhanced in terms of coherent noise removal and twin image minimization. Experimental validations are performed in a regular Olympus BX-60 upright microscope using a 20X 0.46NA objective lens and considering static (resolution test targets) and dynamic (living spermatozoa) phase samples.
Both whole-body rotation and visual flow induce cardiovascular autonomic response in human, but visual response is overridden by vestibular stimulation
Authors: Kuldavletova O. , Denise P. , Normand H. , Quarck G. , Etard O. 
Published: March 2023

AbstractWhile the influence of the vestibular and extra-vestibular gravity signals on the cardiovascular system has been demonstrated, there is little evidence that visual stimuli can trigger cardiovascular responses. Furthermore, there is no evidence of interaction between visual and vestibular signals in autonomic control, as would be expected since they are highly integrated. The present study explored the cardiovascular responses to vestibular and visual stimuli in normal subjects. We hypothesized that the visual stimuli would modify the cardiovascular response to vestibular stimulation, especially when the latter is ambiguous with respect to gravity. Off-Vertical-Axis-Rotation (OVAR) was used to stimulate vestibular and extra-vestibular receptors of gravity in 36 healthy young adults while virtual reality was used for visual stimulation. Arterial pressure (AP), respiratory rate and ECG were measured. The analysis accounted for the respiratory modulation of AP and heart rate (HR). Vestibular stimulation by OVAR was shown to modulate both mean arterial pressure (MAP) and HR, while the visual stimulation was significantly affecting HR modulation, but not MAP. Moreover, the specific visual effect was present only when the subjects were not in rotation. Therefore, visual stimulation is able to modulate the heart rate, but is overridden by vestibular stimulation due to real movement.
A three-plasma miRNA panel predicts the risk of colorectal cancer: a community-based nested case‒control study
Authors: Liu Jia , Chen Binglin , Yang Man , Qian Yun , Shen Qian , Chen Hai , Dong Yunqiu , Wang Lu , Jiao Jiandong 
Published: March 2023

AbstractCirculating microRNAs (miRNAs) have been considered potential markers for the early detection of malignant colorectal cancer (CRC). We aimed to identify a group of miRNAs for the early detection of CRC and assess their predictive ability in a community-based population in China. A nested case‒control study consisting of 97 incident colorectal cancer cases and 103 frequency-matched healthy controls was conducted. The data were randomly assigned into a training set (60%) and a test set (40%). We selected and detected 10 kinds of miRNAs in plasma samples. Multivariate logistic regression analysis was used to identify miRNAs associated with colorectal cancer risk in the training set and test set. Then, we evaluated the predictive ability of the identified miRNAs by the receiver operating characteristic curve (ROC). In this study, three miRNAs (miRNA-29a, miRNA-125b, miRNA-145) were significantly associated with colorectal cancer risk in both the training set and test set. The sensitivity of the identified miRNAs ranged from 0.854 to 0.961. After adding the identified miRNAs, the AUC (area under the curve) value significantly increased from 0.61 to 0.71 compared with the basic model consisting of only basic demographic information. We identified a three-plasma miRNA signature that may serve as a novel non-invasive biomarker in early CRC detection and in predicting individual CRC risk in the generation population.
Integration of CO2capture, activation, and conversion with a ternary acetylglucosyl 2-methyl-imidazolium modified Pd catalyst
Authors: Zhou Zhong-Gao , He Peng , Li Jing , Zhang Jia , Xu Guo-Hai , Zhang Shi-Yong , Deng Xiao-Xiao , Du Zi-Yi , Luo Guo-Tian , Zhen Hong-Yu , Chen Yi-Wang , He Chun-Ting 
Published: March 2023

High-efficiency ternary acetylglucosyl 2-methyl-imidazolium modified Pd catalyst for integration of CO2 capture, activation, and conversion in carboxycyclization of propargyl amines and dilute CO2 with a record TOF of 1440 h−1has been developed.
The Modified Barium Swallow Study and Esophageal Screening: A Survey of Clinical Practice Patterns
Authors: Watts Stephanie , Gaziano Joy , Kumar Ambuj , Richter Joel 
Published: March 2023

Purpose:
Modified barium swallow study (MBSS) is a videofluoroscopic evaluation of oropharyngeal swallowing. Views of esophageal bolus flow during MBSS are permitted under speech-language pathology practice guidelines. However, controversy exists over its implementation. Poor consensus and limited practice guidance may lead to clinical practice variations. Aims of the investigation were to (a) describe current practice patterns of speech-language pathologist visualizing bolus flow through the esophagus during the MBSS, (b) understand areas of variation when incorporating esophageal visualization during the MBSS, and (c) determine clinicians' willingness to modify MBSS procedures to include esophageal imaging.

Method:
A web-based survey (Qualtrics XM) consisting of 26 questions was distributed via web posting and e-mail to members of the American Speech-Language-Hearing Association Special Interest Group 13 and Dysphagia Café. The survey was open for 3 months. Descriptive and associative statistics were completed. Field-testing was performed prior to dissemination of the survey to address content validity.

Results:
A total of 321 individuals participated; 265 responses were used for analysis. Ninety-three percent of respondents viewed the esophagus during the MBSS. Twelve percent followed to the proximal esophagus, 15% to the mid esophagus, 66% to the lower esophagus, and 6% to varied levels. Variability was also reported in contrast type, volume administered, and nomenclature used. Interestingly, few people (3.61%) disagreed that esophageal visualization should be performed during MBSS.

Conclusions:
Speech-language pathology respondents in this study visualize contrast flow through the esophagus and are enthusiastic about expanding the standard MBSS. However, results of the survey demonstrate a lack of uniformity in assessment practices. Unfortunately, this may impact the diagnostic accuracy and clinical utility when adding esophageal visualization to the MBSS. This study highlights the need for a standardized protocol and identifies current barriers and controversies that may prevent expanding the MBSS to more comprehensively evaluate individuals with dysphagia.
Hardware‐assisted remote attestation design for critical embedded systems
Authors: Geden Munir , Rasmussen Kasper 
Published: March 2023

AbstractRemote attestation, as a challenge‐response protocol, enables a trusted entity, called verifier, to ask a potentially infected device, called prover, to provide integrity assurance about its internal state. Remote attestation is becoming increasingly vital for embedded systems that serve in many critical domains, as part of health, military, transportation and industry services, but still lack the most security features available to high‐end systems. In most attestation techniques, the prover provides a cryptographic checksum of its static memory contents, that is, code segments, to the verifier when requested to demonstrate that the device is loaded with the right software. However, those measurements are subject to two limitations. First, they cannot guarantee that the prover has always had legitimate software in the memory prior to attestation. This is because occasional measurements, triggered by the verifier, still leave the device vulnerable to the compromise between two attestation windows as a time‐of‐check‐to‐time‐of‐use (TOCTOU) problem. Second, including dynamic memory regions in the checksum calculation is not helpful in practice, since the verifier typically does not know what those regions should contain or which checksums should be accepted as valid. Hence, many attack scenarios residing in those dynamic regions (e.g. stack) would also go unnoticed. To reveal attack scenarios exploiting the memory regions and time windows left unattested, we propose an attestation scheme that can continuously monitor both static and dynamic memory regions with better spatial and temporal attestation coverage. Our monitoring mechanism is designed to be performed in real time using a novel hardware security module (HSM) connected to the prover's system bus. The proposed HSM monitors not only the integrity of the code on the prover but also its execution by checking the compliance of the bits seen on the bus according to a runtime integrity model (RIM) of the prover's software. Therefore, our attestation scheme is capable of reporting scenarios that violate both the (static) code and (dynamic) runtime integrity since the deployment time.
Analysis of 5G channel loss and its influencing factors in substation based on ray tracing algorithm
Authors: Li Yifeng , Wang Shuang , Tang Bo , Zhang Longbin , Shang Zhiyu , Liu Xingfa 
Published: March 2023

Abstract5G (fifth generation) signals have small coverage and poor stability, and 5G channels are prone to loss in substations densely populated with metal equipment. Due to the particularity of the spatial layout in the substation, traditional physical or statistical channel models cannot accurately calculate the 5G channel loss in the substation. Therefore, this paper introduces the basic idea of ray tracing algorithm for studying ray propagation. Based on the geometric optics theory of ray propagation, the effective channel path of 5G signal in substation is found. Through the electromagnetic reflection theory and consistent diffraction theory, the energy loss caused by signal reflection and diffraction is calculated. Combined with the relationship between the free space loss of 5G signal on the transceiver path and the change of electric field, the solution method of 5G channel loss in substation is deduced. According to this method, (the influence of signal receiver height, 5G antenna height and its spatial position in horizontal and vertical directions on 5G channel loss of substation is studied in turn. By optimizing the layout of communication facilities according to the influence law, the reliability of 5G channel in substation can be realized).