bluuebunny/crossref_metadata_2025 huggingface dataset:
A Comparative Study of Crystal Viscoplastic Modeling of Directionally Solidified Nickel-Base Superalloys
Authors: Wijeyeratne Navindra , Irmak Firat , Gordon Ali P.
Published: September 2022

Nickel-base superalloys (NBSAs) are a group of materials that are used in high-temperature applications. This work primarily focuses on directionally solidified (DS) NBSAs. Directionally solidified materials are comprised of columnar grains which are parallel to the 〈001〉 direction. Crystal viscoplastic (CVP) models can simulate the effects of temperature and orientation dependence under a variety of loading conditions such as tensile, low cycle fatigue (LCF), and thermomechanical fatigue (TMF). The CVP model is initially developed for a single crystal (SX) material and then adapted to DS material to represent the columnar grain structure. In past studies, the development of CVP models for DS materials was mainly accomplished by applying the SX CVP model to the DS materials implicitly or explicitly. Both of these modeling approaches require the application of the SX CVP model to multiple grains resulting in them being highly computationally expensive. A crystal viscoplastic model for DS materials that circumvents the modeling of individual grains was presented by the authors at turbo-expo 2021. The primary objective of this work is to utilize the three types of DS-CVP models for the same materials to investigate their performance. Comparisons will be performed at various temperatures and orientations. The models are compared to analyze their pros and cons and applicability, etc. Comparisons of these three types of modeling approaches applied to the same material have not been presented before in the literature and will provide an excellent insight into the usability of these constitutive models.
A Comprehensive Model for Single Bubble Nucleate Flow Boiling
Authors: Palakkeel Irinavuveetttil Shyamkumar , Singh Suneet , Srivastava Atul , Visaria Milan
Published: September 2022

The single bubble dynamics and local thermal effects in a rectangular channel are investigated in this paper under subcooled nucleate flow boiling conditions. A combined effect of Marangoni and microlayer evaporation in flow boiling regimes has rarely been reported in open literature. Therefore, a comprehensive boiling model that combines the three submodels, namely, phase change model, microlayer evaporation model, and Marangoni model, is developed that accounts for small-scale physics such as evolution of superheat layer during bubble growth, microlayer evaporation, and scavenging of the superheated liquid during the bubble departure. The verification of model has been carried out through detailed flow and temperature field validation exercises of various bubble stages with recent experimental data reported in the literature. The effects of varying subcooled conditions and Reynolds number on bubble dynamics and the associated heat transfer rates have been examined. The study reveals a decreasing trend in the bubble diameter with increasing Reynolds number and degree of subcooling. It has also been observed that the bubble shape is affected by the Marangoni phenomena. Bubble shape slightly flattens during inception, gradually becomes spherical while sliding, and later elongates after liftoff. The individual contribution of microlayer heat flow (Qmicrolayer) is estimated to be around 22–40% for flow boiling conditions and it is the second-highest heat transfer contributor after the latent heat transfer. The results obtained from the proposed model show a good match with published data and indicate the significance of microlayer in the single bubble flow boiling heat transfer.
Condensation on a Vertical Plate With Sinusoidal Microfins
Authors: Rose John W. , Chai Lei
Published: September 2022

A theoretically based, approximate solution for condensation on horizontal, microfinned tubes has been used as a basis to obtain a relation between heat flux and vapor-surface temperature difference for condensation on a vertical plate with sinusoidal microfins. The earlier result was in excellent agreement with experimental data with regard to magnitudes of the heat-transfer coefficient, dependence on fin and tube dimensions, and for a range of fluids with widely different properties. The new equation for condensation on a vertical plate with sinusoidal microfins takes account of the vertical gravity force and the lateral surface tension-induced pressure gradient over the curved fin surface. The equation reduces to the Nusselt result when fin height is zero and to simple area enhancement of the Nusselt result when surface tension is set to zero. Comparisons are made with experimental data for condensation of nitrogen on a vertical surface with sinusoidal microfins.
Design and Development of Children's Calibration Phantoms for Whole and Mobile Body Counters
Authors: Sinha Vaibhav , Scherer Ulrich W.
Published: September 2022

The experiences from several past radiological accidents (e.g., Fukushima Daiichi, Chernobyl, and Goiania) have shown that not only occupationally radiation-exposed adults but also children of all age groups can be affected by such an accident. Moreover, in asymmetric conflicts, children could possibly be affected by the explosion of a radiological dispersal device. Whole-body counting facilities all over the world are well prepared to measure children and adults but suffer in the case of newly born babies and toddlers owing to a lack of corresponding calibrations. A series of calibration phantoms representative of adult persons and larger children is commercially available or can be constructed from easily accessible materials, but for newly born and children up to 20 kg, only very few phantoms have been described which approximate the infantile body, and only very roughly. The aim of this work was to improve the current unsatisfactory situation. Two main steps toward achieving this aim included the compilation of anthropomorphic data for children and the construction of a modular set of calibration phantoms for the weight classes between 3 and 20 kg from simple, readily accessible, and cheap materials. The phantoms are made from commercially available freezer packs, which can be filled with a radionuclide solution. By using calibrations based on these purposely-built realistic weight class phantoms, internal radioactive contamination in children can be assessed more reliably than would be otherwise possible with the standard adult phantom calibrations.
Thermal Performance Analysis of Jet Cooling Method in a High-Power Permanent Magnet Synchronous Motor
Authors: Wang Weishu , Shang Mengyuan , Li Yunze , Yao Zikun , Niu Jingzun , Juan Zhen
Published: September 2022

Permanent magnet synchronous motor (PMSM) is compact and has high-power density. Heat dissipation conditions introduce new challenges and opportunities for further improvement of its power, efficiency, and reliability. In this article, a jet cooling method was proposed. The feasibility of jet cooling method was studied by taking a 600 kW PMSM as a prototype. Based on the Euler two-phase model, the effect of thermal performance was numerically studied, varying different inlet velocity, inlet liquid volume fraction, and jet cone angle. Also, the influence of the revolution speed and number of nozzles on the cooling effect was analyzed. The distribution of temperature and liquid phase was discussed. The numerical results illustrate that the maximum temperature of PMSM is only 370 K, which proves the heat dissipation capacity of the cooling system. At the air gap entrance, the temperature and liquid phase are distributed periodically. Under standard conditions, three nozzles, inlet velocity of 60 m/s, and 0.3 inlet liquid volume fraction can achieve high efficiency cooling. Heat dissipation depends largely on liquid. The cooling effect is enhanced by increasing the inlet liquid volume fraction. The optimal jet cone angle is 0 deg, which allows more liquid phase to enter the air gap. At high rotational speed, to avoid hindering the liquid phase from entering the air gap, the inlet velocity should not be less than 60 m/s.
SEGURIDAD Y RECIPROCIDAD EN LA PRÁCTICA DEL COUCHSURFING
Authors: MIRELES BETANCOR FRANCISCO
Published: September 2022

Esta comunicación tiene como finalidad reflexionar desde la antropología del turismo en relación a la seguridad y la reciprocidad en la práctica del couchsurfing, utilizando como soporte metodológico la netnografía, que en el couchsurfing son aquellos grupos de huéspedes, que publicando en redes su disponibilidad, ofrecen "un sofá"para pernoctar, o para pasar algunos días, a quien pertenezca a la plataforma virtual sin que medie una transacción económica. Se han tomado como referencia de estudio dos plataformas de intercambio de información de couchsurfing: Couchsurfing y BeWelcome. La selección fue por idoneidad práctica, pues una es la original, Couchsurfing, y la otra, BeWelcome, surge a raíz del cambio de condiciones de uso de la primigenia. El giro que da Couchsurfing como plataforma de pago en parte de sus servicios, introduciendo anuncios publicitarios, fue el detonante para que un grupo de “surfers” montaran BeWelcome como una comunidad colaborativa en código abierto que respeta los valores altruistas que inspiran la práctica del couchsurfing. Entre los objetivos iniciales se buscaba analizar cómo ha surgido el movimiento couchsurfer, los cambios que se han producido y a partir de aquí, tras un proceso de rebeldía, explicar por qué se genera otra plataforma que recoge los principios y valores iniciales de la comunidad virtual couchsurfer. En resumen, ambas se mostraban como opuestas en sus métodos y en sus planteamientos pero aparentemente similares en los fines, que no eran otros que ofrecer un espacio para que las personas se pudieran relacionar durante una estancia vacacional sin ánimo de lucro. Potencialmente este tipo de estudio en la red permitía una etnografía multisituada y seguir empíricamente el hilo conductor de los procesos culturales a largo plazo (Marcus, 2001; Francesch, 2008). Ya Marcus estableció que internet abría uno de esos campos en los que se podía hacer una investigación etnográfica multilocal sobre nuevas modalidades de comunicación electrónica, así como, la compleja visión multilocal que ha proporcionado la economía cultural global, abriendo un dominio de investigación transnacional (Marcus, 2001: 117).
Don't judge an orogen by its cover: Kinematics of the Appalachian décollement from seismic anisotropy
Authors: Frothingham Michael G. , Schulte-Pelkum Vera , Mahan Kevin H. , Merschat Arthur J. , Mather Makayla , Gomez Zulliet Cabrera
Published: September 2022

As North America collided with Africa to form Pangea during the Alleghanian orogeny, crystalline and sedimentary rocks in the southeastern United States were thrust forelandward along the Appalachian décollement. We examined Ps receiver functions to better constrain the kinematics of this prominent subsurface structure. From Southeastern Suture of the Appalachian Margin Experiment (SESAME) and other EarthScope stations on the Blue Ridge–Piedmont crystalline megathrust, we find large arrivals from a 5–10-km-deep converter. We argue that a strong contrast in dipping anisotropic foliation occurs at the subhorizontal Appalachian décollement, and propose that such a geometry may be typical for décollement structures. Conversion polarity flips can be explained by an east-dipping foliation, but this orientation is at odds with the overlying northeast-trending surface tectonic grain. We suggest that prior to late Alleghanian northwest-directed head-on collision, the Appalachian décollement accommodated early Alleghanian west-vergence, independent of the overlying Blue Ridge–Piedmont structural inheritance. The geophysical expression of dipping anisotropic foliation provides a powerful tool for investigating subsurface kinematics, especially where they are obscured by overlying fabric, to disentangle the tectonic complexities that embody oblique collisional orogens.
Idiopathic chronic granulomatous vulvitis and related diagnostic and treatment conundrum
Authors: Sabnani Smrati , Gaurav Amrita , Manohar Nishank , Azad Shweta
Published: September 2022

Three years ago, a woman in her late 30s presented with huge masses in the lower genital tract region, including bilateral labia majora, labia minora and the gluteal region. The patient had had many antimicrobial, antiprotozoal, steroid and topical antibiotic treatments. The patient was misdiagnosed and treated for metastatic Crohn’s disease, but there was no improvement. The patient underwent extensive local excision of the lesions and was identified with a deep aggressive angiomyxoma; however, the tumors recurred. Her clinical condition deteriorated, and she was brought to this institution. This area was biopsied, and the results were suggestive of non-necrotising granulomatous disease. Labial and gluteal lesions were surgically excised, followed by primary closure of the operative site. The patient has undergone regular monitoring and has not experienced a recurrence.
CD36 inhibition partially attenuates myocardial injury in diabetic rats with ischemic postconditioning
Authors: Zhang Yuan , Liu Huimin , Shi Si , Chen Lili , Chen Rong , Xia Zhongyuan , Meng Qingtao
Published: September 2022

Introduction

To investigate the role of CD36 (fatty acid translocation enzyme) in the myocardial ischemia reperfusion (IR) injury in diabetes with ischemic postconditioning (IPostC).

Research design and methods

Adult male Sprague-Dawley rats received streptozotocin treatment to establish type 1 diabetic model. After 8 weeks, diabetic rats were subjected to myocardial IR and IPostC with or without sulfo-N-succinimidyl oleate (SSO, an inhibitor of CD36) intervention.

Results

Diabetic rats showed the upregulation of myocardial CD36 expression and the increase in free fatty acid (FA) and triglycerides (TG) level and FA β oxidation (FAO). The cardioprotection of IPostC was compromised in diabetic rats with myocardial IR as evidenced by increased myocardial infarct size and plasma levels of lactate dehydrogenase (LDH), creatine kinase MB isoenzyme (CK-MB), and cardiac troponin Ⅰ (cTn-I), but not in non-diabetic rats with myocardial IR. SSO significantly decreased the levels of plasma LDH, CK-MB, cTn-I, free FA, and the levels of myocardial malondialdehyde, 8-isoprostane, FA, TG, and CD36 expression, and significantly increased the levels of myocardial glutathione peroxidase, total glutathione/oxidized glutathione, FAO, peroxisome proliferator activated receptor alpha, pyruvate dehydrogenase kinase 4, and the early (E) and late (A) diastolic filling ratio of heart in diabetic rats with IR and IPostC. However, no significant differences were observed in myocardial infarct size, heart rate, ejection fraction, fractional shorting, and dp/dtmax.

Conclusions

CD36 downregulation partially attenuated myocardial IR injury in diabetic rats with IPostC via ameliorating FA metabolism and oxidative stress.
Localizing branes with bifurcating bulks
Authors: Antoniadis Ignatios , Cotsakis Spiros , Miritzis John
Published: September 2022

We study the problem of evolution of bulk 5-fluids having an embedded braneworld with a flat, de Sitter, or anti-de Sitter geometry. We introduce new variables to express the Einstein equations as a dynamical system that depends on the equation of state parameter $$\gamma $$
γ
and exponent $$\lambda $$
λ
. For linear fluids (i.e., $$\lambda =1$$

λ
=
1

), our formulation leads to a partial decoupling of the equations and thus to an exact solution. We find that such a fluid develops a transcritical bifurcation around the value $$\gamma =-1/2$$

γ
=
-
1
/
2

, and study how this behaviour affects to stability of the solutions. For nonlinear fluids, the situation is more diverse. We find an overall attractor at $$\lambda =1/2$$

λ
=
1
/
2

and draw enough phase portraits to exhibit in detail the overall dynamics. We show that the value $$\lambda =3/2$$

λ
=
3
/
2

is structurally unstable and typical for other forms of $$\lambda $$
λ
. Consequently, we observe a noticeable dependence of the qualitative behaviour of the solutions on different ‘polytropic’ forms of the fluid bulk. In addition, we prove the existence of a Dulac function for nonlinear fluids, signifying the impossibility of closed orbits in certain subsets of the phase space. We also provide ample numerical evidence of gravity localizing solutions on the brane which satisfy all energy conditions.
CAPUTO-TYPE FRACTIONAL SYSTEMS WITH VARIABLE ORDER DEPENDING ON THE IMPULSES AND CHANGING THE KERNEL
Authors: ABDELJAWAD THABET , MLAIKI NABIL , ABDO MOHAMMED S.
Published: September 2022

In this paper, we introduce a new class of fractional impulsive systems of functions with respect to another function in which the order of the fractional derivative and the kernel function is associated with the impulses. We derive the solution representation, investigate the existence, and uniqueness of solutions of such a Caputo-type fractional impulsive system. Besides, the data dependence of the system is discussed. Our arguments are based on some classical fixed-point styles. Three various examples are provided to illustrate the validation of the main results. An open problem is presented in the conclusion section to bring the attention to a more general setting.
Glacial isostatic adjustment and post-seismic deformation in Antarctica
Authors: van der Wal Wouter , Barletta Valentina , Nield Grace , van Calcar Caroline
Published: September 2022

This chapter reviews glacial isostatic adjustment (GIA) and post-seismic deformation in Antarctica. It discusses numerical models and their inputs, and observations and inferences that have been made from them. Both processes are controlled by mantle viscosity but their forcings are different. Ongoing GIA induced by the loss of ice since the last glacial maximum (LGM) could have amounted to 5–15 m of global sea-level rise. However, mantle viscosity is so low in parts of West Antarctica (
c.
10
18
Pa s) that changes in ice thickness over the last centuries and decades have controlled the current uplift rates there. The uplift due to GIA has promoted ice-sheet stability since the LGM, and in West Antarctica GIA is a significant negative feedback on the current decline of the ice sheet. Post-seismic deformation following the 1998 earthquake near the Balleny Islands south of New Zealand has been detected in global navigation satellite system (GNSS) data and compared to model outputs. The best-fitting viscosity for this area is
c.
10
19
Pa s, similar to GIA-based estimates for the Antarctic Peninsula. Future work should focus on unifying descriptions of viscosity across geodynamic models, and integrating information from seismic, gravity, experimental and geological data.
Indoor Positioning Technology and Control of Mobile Home Service Robot
Authors: Wang Gang , Wen Hongyuan , Zhou Jun
Published: September 2022

With the rapid development of the market economy, location information services have shifted from outdoor to indoor, requiring higher system accuracy. Indoor positioning and control is an indispensable technical support for mobile home service robots to perform system tasks, and this technology is also an important parameter that marks the level of intelligence of a home service robot. However, in indoor places, how to obtain the target node location information timely and accurately and how to control and path planning should be the first issues to be considered in the design of home robots at this stage. This article gave a brief overview of the current indoor positioning technology and control, analyzed the more widely and frequently used indoor positioning methods, and deeply studied the ultrasonic positioning technology. On this basis, a mobile home service robot system was designed, and simulation experiments were carried out, respectively, to test the receiving time and arrival time of the node signal, the node positioning accuracy, the optimal degree of route planning, and the absolute and relative errors of navigation and path estimation. The experimental results showed that the accuracy of the robot system positioning proposed in this article reached more than 80%, and the relative error was only 4.21%, which verified its feasibility and effectiveness in practical applications. Popularizing it in the market can effectively improve the system performance and intelligence of home service robots.
[Retracted] Clinical Observation of Botulinum Toxin Injection in the Treatment of Focal Dystonia and Muscle Spasm
Authors: Zhang Zhen
Published: September 2022

Dystonia and muscle spasms are a group of common and unfavorable clinical neurological symptoms. The use of botulinum toxin (BTX‐A) abroad has achieved good results in the treatment of various movement disorders characterized by involuntary or abnormal muscle contractions. It is expected to open up a new field for the treatment of myelodysplastic syndromes (MDs) such as focal dystonia and muscle spasm. There are theoretical and practical implications for the diagnosis and development of some effective neurological treatments. The efficacy of BTX‐A in the treatment of various focal dystonia and muscle spasm disorders is as follows: symptoms were improved to varying degrees after injection of Botox or botulinum toxin type A (CBTX‐A), but Botox or CBTx. There was no significant difference in the efficacy of A. 30.4% of patients had complete remission, 57.8% had significant remission, and 8.9% had partial remission. Among them, HFS and BS had the best curative effect, and the symptoms were significantly improved by 95.3% and 89.4%, respectively. The efficacy of CD was also satisfactory, with 75.5% of the patients showing significant improvement in symptoms, followed by Meg/OMD (OMD) with 73.3% and SD with 3.3%. The efficacy of WC is poor, and functional improvement is uncertain. Other forms of focal dystonia and spasticity also showed significant functional improvement in 60% of patients. Most patients start to see effects within 1 week after BTX‐A injection, symptoms gradually improve, and the bridge of curative effect is reached in 2‐4 weeks, and the healing effect lasts for about 3‐5 months on average. The overall severity of adverse effects was not severe and resolved spontaneously within a few days to ten weeks, with the most concerning complications being ptosis and dysphagia.
An Improved Online Folk Sports Culture Exchange Model Based on Multimedia Data Analysis and Edge Computing
Authors: Cui Sheng-li , Anurag Kalra
Published: September 2022

In order to improve the effect of folk sports cultural exchange, this study proposes an improved online folk sports cultural exchange model based on multimedia data analysis and edge computing. Moreover, this study explores the factors that affect the local popularity of media content and establishes a relationship model between user request volume and edge node location characteristics. In addition, this study designs customized edge storage strategies under different conditions, which effectively increases the amount of user requests processed by edge nodes and enhances the agility of edge nodes to respond to user content requests. Finally, in order to improve the effectiveness of content crowdsourcing collection, the edge platform needs to select the optimal set of participants to complete the content collection task under a given task budget. The experimental research shows that the improved online folk sports culture exchange model based on multimedia data analysis and edge computing can realize the effective exchange of folk culture.
Investigation of Nonlinear Vibrational Analysis of Circular Sector Oscillator by Using Cascade Learning
Authors: Khan Naveed Ahmad , Sulaiman Muhammad , Seidu Jamel , Alshammari Fahad Sameer
Published: September 2022

This paper analyzed the model of swinging oscillation of a solid circular sector arising in hydrodynamical machines, electrical engineering, heat transfer applications, and civil engineering. Nonlinear differential equations govern the mathematical model for frequency oscillation of the system. Furthermore, a computational strength of Cascade neural networks (CNNs) is utilized with backpropagated Levenberg–Marquardt (BLM) algorithm to study the oscillations in angular displacement

θ

, velocity

θ

′

, and acceleration

θ

″

. A data set for the supervised learning of the CNN-BLM algorithm for different angles

α

and radius

R

are generated by Runge–Kutta (RK-4) method. The BLM algorithm further interprets the dataset with log-sigmoid as an activation function for the solutions’ validation, testing, and training. The results obtained by the design scheme are compared with Akbari–Ganji’s (AG) method. The rapid convergence and quality of the solutions are validated through performance indicators such as mean absolute deviations (MAD), root means square error, and error in Nash–Sutcliffe efficiency (ENSE). The statistics demonstrate the design scheme’s applicability and efficiency to highly singular nonlinear problems.
Current Status and Challenges of Support Environments for New Graduate Occupational Therapists in Japanese Hospitals: A Mixed Method Study
Authors: Shiota Shigehito , Goto Naoya , Kanayama Aki , Kubo Yuko , Hirata Kazuhiko , Ito Yoshihiro , Kimura Hiroaki
Published: September 2022

Introduction. The number of occupational therapists in Japan continues to increase, which has led to an urgent need to improve the educational environment for new graduate occupational therapists. This study attempted to identify the current state and challenges of the educational environment for new graduate occupational therapists in Japan. Methods. We employed a mixed method using quantitative and qualitative data from a questionnaire survey of 1055 chief occupational therapists in Japanese hospitals. The questionnaire consisted of (1) basic information about the respondent and their hospital, (2) educational environment for new graduate occupational therapists at the respondent’s hospital, (3) time spent on in-hospital lectures and on-the-job training, and (4) challenges in the clinical education of new graduate occupational therapists. Text data was analysed qualitatively using text mining to create cooccurrence networks. Results. A total of 385 responses were obtained with a response rate of 36.5%. All hospitals had recruited new graduate occupational therapists in the last five years, but more than half of them did not have a philosophy and policy on education and had not prepared guidelines for the completion of occupational therapy education. The cooccurring network of issues in the educational environment for new graduate occupational therapists indicates the need to create standard guidelines, train supervisors, and develop a hospital education system. Conclusion. In the future, the needs of the educational environment for newly graduated occupational therapists should be investigated, and standardised educational guidelines should be developed.
A Study on the Application of Random Matrix Theory in the Construction of the Evaluation System of Public English Flipped Classroom Teaching in Higher Education Institutions
Authors: Sun Xuemei , Lin Xun
Published: September 2022

With the development of science and technology, the advent of the knowledge era, the Internet era, the WeChat era, and the mobile era as well as the development of multimedia have brought about great changes in the dissemination, communication, construction, and sharing of knowledge. This series of changes has led to unprecedented changes in teaching philosophy, teaching mode, teaching objectives, teaching design, teaching methods, and teaching approaches in higher vocational education. With the deepening of the new round of curriculum reform, flipped classroom teaching has been generally accepted and widely used. Therefore, it is essential to evaluate flipped classroom teaching. Based on the introduction of the random matrix theory, this paper attempts to establish a complete and scientific evaluation index system in conjunction with the flipped public English classroom in higher education institutions, so as to provide students and teachers with a reliable means of evaluation and thus promote the practical application of English teaching in higher education.
Comparative Evaluation of Efficacy and Safety of the Diode Laser (980 nm) and Sclerotherapy in the Treatment of Oral Vascular Malformations
Authors: Shivhare Peeyush , Haidry Naqoosh , Sah Neha , Kumar Ajay , Gupta Abhishek , Singh Ankur , Penumatcha Mohan Raju , Subramanyam Shalini
Published: September 2022

Background. Vascular malformations are structural abnormalities which are formed by progressively enlarging aberrant and ecstatic vessels without endothelial cell proliferation and composed of the type of vessel involved, i.e., capillary, veins, and arteriovenous. Treatment of vascular malformations may involve many techniques like sclerotherapy, embolization, surgical resection, cryotherapy, laser treatment, or medical therapy. This observational prospective study is aimed at evaluating and comparing the effects and efficacy of diode laser and sclerotherapy in the treatment of oral vascular malformation. Materials and Methods. 40 patients presenting with oral vascular malformation were included in the present study. The patients were divided equally (20 in each) into two groups, i.e., the laser group and sclerotherapy group. Sclerotherapy was performed with 3% sodium tetradecyl sulfate while the laser group was treated with diode laser 980 nm with transmucosal thermophotocoagulation. The patients were assessed for the response, remission, and side effects. The results obtained were tabulated and compared with the chi-square test. Results. Side effects were found significantly lesser in the laser group compared to the sclerotherapy group (

p
<
0.05

). Statistically significant difference was seen for postoperative pain between two groups. The laser group had mild to moderate pain compared to severe pain in the sclerotherapy group. Recurrence was observed more in the laser group compared to the sclerotherapy group. Conclusions. Laser and sclerotherapy with 3% sodium tetradecyl sulfate both are effective in the treatment of vascular malformations. Diode laser seems to be better than sclerotherapy given lesser side effects and comfort to the patients while sclerotherapy seems to be better in respect to recurrences.
Exponential Synchronization of Complex Dynamical Networks via a Novel Sampled‐Data Control
Authors: Liu Haixia , Wang Tianbo
Published: September 2022

This paper investigates the exponential synchronization of complex dynamical networks based on the sampled‐data control method. The sampled‐data control means that the control input remains unchanged for a long time after each sampling, which can reduce the sampling number. By using the stability theory of the dynamical systems, this paper provides a novel sampling controller and estimates the bound of the sampling interval. Finally, a numerical example is given to demonstrate the effectiveness of the proposed design technique.
Codon Usage Bias and Cluster Analysis of the MMP-2 and MMP-9 Genes in Seven Mammals
Authors: Ouyang Tanliang , Zhong Jincheng , Chai Zhixin , Wang Jiabo , Zhang Ming , Wu Zhijuan , Xin Jinwei
Published: September 2022

Matrix metalloproteinase (MMP)-2 and MMP-9 are a family of Zn2+ and Ca2+-dependent gelatinase MMPs that regulate muscle development and disease treatment, and they are highly conservative during biological evolution. Despite increasing knowledge of MMP genes, their evolutionary mechanism for functional adaption remains unclear. Moreover, analysis of codon usage bias (CUB) is reliable to understand evolutionary associations. However, the distribution of CUB of MMP-2 and MMP-9 genes in mammals has not been revealed clearly. Multiple analytical software was used to study the genetic evolution, phylogeny, and codon usage pattern of these two genes in seven species of mammals. Results showed that the MMP-2 and MMP-9 genes have CUB. By comparing the content of synonymous codon bases amongst seven mammals, we found that MMP-2 and MMP-9 were low-expression genes in mammals with high codon conservation, and their third codon preferred the G/C base. RSCU analysis revealed that these two genes preferred codons encoding delicious amino acids. Analysing what factors influence CUB showed that the third base distributors of these two genes were C/A and C/T, and GC3S had a wide distribution range on the ENC plot reference curve under no selection or mutational pressure. Thus, mutational pressure is an important factor in CUB. This study revealed the usage characteristics of the MMP-2 and MMP-9 gene codons in different mammals and provided basic data for further study towards enhancing meat flavour, treating muscle disease, and optimizing codons.
A Novel High-Efficiency Multiple Output Single Input Step-Up Converter with Integration of Luo Network for Electric Vehicle Applications
Authors: Ramu Senthil Kumar , Balaganesh Rajesh Kumar , Paramasivam Suresh Kalichikadu , Muthusamy Suresh , Panchal Hitesh , Nuvvula Ramakrishna S. S. , Kumar Polamarasetty P , Khan Baseem
Published: September 2022

Concerns about pollution, climate change, limited fossil fuel supplies, and the desire to eliminate energy dependency have sparked a surge in interest in electric vehicles (EVs). EV requirements have resulted in a variety of difficulties and remedies in EV technology. One of them is the use of DC-DC converters to transfer the level of voltage from the battery in an EV to other needed voltage levels. An independent converter for each operating voltage might be used as a remedy. On the other hand, single input multiple output (SIMO) converters can be utilized to decrease costs, reduce switching loss, and thus enhance the system efficiency. In this paper, a nonisolated step-up converter with the integration of the Luo network is proposed for multiple outputs (24 V and 48 V). In electric vehicles, 48 V is utilized for battery backup, while 24 V is utilized for the horns, headlights, telematics, or the microcontroller. The experimental observations of a 36 V, 600 mA, 24 W prototype confirm the theoretic examination and demonstrate the advantages of the proposed converter over other multioutput converters. The STM microcontroller, based on an ARM cortex microprocessor, is linked into the Luo network for making pulses. The proposed converter achieves 94.2% efficiency at full power. The proposed converter’s performance is evaluated through MATLAB/SIMULINK software, and the results are validated experimentally.
Fault Diagnosis to Nuclear Power Plant System Based on Time-Series Convolution Neural Network
Authors: Li XianLing , Han DongJiang , Dai XinFa , Lv ShuYu , Tao Mo , Zheng Wei , Tang YiBin
Published: September 2022

Nuclear power plant (NPP) is a highly complex engineering system which has typical internal feedback and strong component coupling. With these features, most NPP systems have high risk of radioactive release, which makes it essential to perform fault detection (FD) to the NPP systems. To address this challenge, this paper proposes a FD mechanism named characteristic time-series convolutional neural network (CT-CNN) based on principal component analysis (PCA), time-series analysis, and convolutional neural network (CNN) mechanisms. First, the models of NPP FD system are formulated. Then, the PCA mechanism is applied to extract the features of the NPP system. Next, the time-series analysis and CNN approaches are applied to realize FD to the NPP system. With the above mechanisms, the proposed approach has not only shown strong stability and become adaptive to different data set, but also preserves both time and state characteristics of the NPP system. In experiment, it shows the proposed approach can achieve better performance in both detection accuracy and variance than the classic back propagation, LSTM method, and standard CNN algorithms. More significantly, its optimal accuracy can be as high as 99.8%.
A Novel Oxidative Phosphorylation-Associated Gene Signature for Prognosis Prediction in Patients with Hepatocellular Carcinoma
Authors: Chen Weigang , Yang Zelong , Chen Yong
Published: September 2022

Hepatocellular carcinoma (HCC) is a common type of malignant tumor with high morbidity and mortality. The oxidative phosphorylation (OXPHOS) metabolic pathway produces adenosine triphosphate (ATP) by delivering electrons to transmembrane protein complexes in the mitochondria. This research was dedicated to identifying an OXPHOS-associated signature for the assessment of prognosis of HCC patients. A total of 371 HCC patients from the Cancer Genome Atlas (TCGA) and 231 HCC patients from the International Cancer Genome Consortium (ICGC) with RNA expression data and clinical data were employed as construction and validation cohorts, respectively. The least absolute shrinkage and selection operator (LASSO) Cox regression was applied to establish a multigene signature in the TCGA cohort, and the ICGC cohort was used for validation. The prognostic value of the risk signature was evaluated using univariate and multivariate Cox regression, Kaplan–Meier curves, and receiver operating characteristic (ROC) curves. The potential enrichment of biological functions was investigated using Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses. Meanwhile, we analyzed the correlation between the risk score and the tumor microenvironment (TME). A five-gene signature including ATP6V0B, ATP6V1C1, ATP6V1E1, TIMM9, and UQCRH was identified by LASSO Cox regression to classify patients into low- and high-risk groups. ROC curve analysis indicated that the five-gene signature is a prospective prognostic factor in HCC patients. Univariate and multivariate Cox regression analyses demonstrated that the risk score was an independent prognostic factor for overall survival (OS). Functional analysis showed that differentially expressed genes (DEGs) between the low- and high-risk groups were enriched in mitosis and the cell cycle pathway. In addition, the five-gene signature was associated with innate immune cell infiltration, immune subtypes, and tumor stemness. A novel OXPHOS-associated gene signature can be used for prognostic prediction for patients with HCC.
Experimental Study on Shear Strength of Root Composite Tailing Soil Based on Interfacial Bonding
Authors: Yang Qing Chao , Hao Zhe , Lei Sheng You , Chen Yan , Shen Hong Xia , Zhang Ying , Zhang Qian , Teng Da
Published: September 2022

At present, the root soil interface bonding is not considered in the root system of mechanical soil-fixing model. The typical restoration plant Amorpha fruticosa, utilizing the widely used Wu model (WWM), the tensile and tensile properties of single root, and the shear strength properties of root soil composite tailing, is analyzed by the tensile tests of plant roots, pullout tests, and shear tests based on the effect of interfacial bond strength; based on the failure mode of root system in root soil, the modified WWM model is used to calculate the increment of shear strength of composite tailing soil. The results showed that ① the relationship between root diameter of A. fruticosa and tensile strength was power function. ② The bond between root and soil becomes more tight, and the pullout strength of the root system increases significantly. ③ When root soil area ratio (RAR) is the same, shear deformation capacity of root soil composite tailing soil increases with the increase of interface bonding strength. Under the condition of the same interface bonding strength, the cohesion of root soil composite tailing soil is greater than that of tailing soil and increases with the increase of RAR, but the change of internal friction angle is not significant. When the pullout strength is added to the plant root prediction model, the soil consolidation effect of the plant root system can be better reflected. The range of the revised coefficient of the WWM model for the root soil composite tailing soil is 0.15~0.37. The research results will provide a theoretical basis and data support for quantifying the ecological restoration and reinforcement capacity of tailing pond shrubs and plants, slope stability, soil and water management, and other ecological soil consolidation capacity of mines.
Evaluation of Enterprise Accounting Data Management Based on Maturity Model
Authors: Xiang Jun
Published: September 2022

The study of enterprise management driven by accounting data has not only great strategic significance but also great practical value and distinctive characteristics of The Times. Although the macro evaluation of DCMM is strong, its objective operability is slightly weak. Therefore, based on the maturity model, this article establishes a three-level accounting data management (AAM) capability evaluation index system, divides the maturity level and key process domains, and constructs an AAM capability evaluation model. Through the evaluation of the accounting data management ability of the case enterprise, the evaluation value of the AAM ability is calculated, and the measurement of the AAM ability is completed, which is helpful to improve the data management ability of the enterprise scientifically and efficiently.
Associations of Maternal Complaints to Levator Ani Muscle Trauma within 9 Months after Vaginal Birth: A Prospective Observational Cohort Study
Authors: Kimmich N. , Birri J. , Richter A. , Zimmermann R. , Kreft M.
Published: September 2022

Introduction. Pelvic floor trauma in the form of partial or complete avulsions of the levator ani muscle (LAM) affects 6-42% of women after vaginal birth and can cause tremendous long-term morbidity. Many studies assessed morphological pelvic floor trauma after childbirth but lacked to evaluate women’s associated short-term complaints. A proper assessment of trauma and subjective complaints after birth could help to assess possible associations between them and their relevance to women’s daily life. Therefore, we aimed to assess women’s complaints within the first months after birth in association to their LAM trauma. Materials and Methods. Between 3/2017 and 4/2019, we prospectively evaluated vaginal births of 212 primiparous women with singletons in

vertex
 
presentation
≥
36
+
0

gestational weeks for levator ani muscle (LAM) trauma by translabial ultrasound, for pelvic organ prolapse by clinical examination, and for urogynecological complaints using questionnaires 1-4 days (P1), 6-10 weeks (P2), and 6-9 months (P3) after birth. The questionnaires were self-designed but oriented to and modified from validated questionnaires. Women’s complaints were evaluated for P1-P3 according to their LAM trauma state. Results. At P1, 67% of women showed an intact LAM, whereas 14.6% presented a hematoma, 6.6% a partial avulsion (PAV), and 11.8% a complete avulsion (CAV). At P2, 75.9% showed an intact LAM, 9.9% a PAV, and 14.2% a CAV. At P3, 72.9% of women with a LAM trauma in P1 and/or P2 were assessed with 21.6% being intact and 39.2% having a PAV and CAV, respectively. Obstetrical and baseline characteristics differed slightly between the groups. When comparing the time before and during pregnancy with the time after childbirth, birth itself affected women’s complaints in all LAM state groups, but the presence of a LAM trauma, especially a CAV, had more negative effects. Conclusions. Vaginal birth changes the anatomical structure of the maternal birth canal and genital tract, and it alters women’s perceptions and body function. In our study, LAM trauma did not change these effects tremendously within the first months. Therefore, other maternal, fetal, and obstetrical factors need consideration for the explanation of maternal complaints, in addition to long-term effects of trauma and dysfunction of the LAM and other birth canal structures.
Sequence Video and Artificial Intelligence Assisted Basketball Injury Risk Early Warning Method
Authors: Yang Gui , Xu Xiao
Published: September 2022

Basketball sport is a comprehensive nonperiodic collective sport, in which sports injuries of various parts are also prone to occur. Its higher exercise intensity not only effectively enhances the physical fitness of the athlete but also causes physical damage due to a series of actions such as frequent take-offs and landings, resulting in certain sports injuries. Therefore, the early warning of injury in basketball is very necessary, and it is very useful to protect the safety of players. In this paper, we investigate how to use the sequence video and artificial intelligence method for the basketball injury risk early warning in order to protect the player and better assist the player to improve their efficiency of training. First, we preprocess the video sequence. We convert the video sequence into image data and perform noise reduction and transformation operations on the image. Second, for the processed image data, we designed a convolutional neural network model to determine the damaged area. Third, we use the neural network model to take the image data with the detection area as the input, perform feature extraction on the data, and finally obtain the early warning value of basketball sports injury. The experimental results prove that the method proposed in this paper has good evaluation performance.
Nephrotic Syndrome Induced by Lenvatinib Treatment for Hepatocellular Carcinoma
Authors: Prasoppokakorn Thaninee , Thanapirom Kessarin , Treeprasertsuk Sombat
Published: September 2022

Lenvatinib, an oral small-molecule multiple tyrosine kinase inhibitor (TKI), has been approved for first-line therapy for unresectable hepatocellular carcinoma (HCC). Proteinuria is one of the most common adverse events associated with lenvatinib treatment. We reported a 67-year-old Thai female was diagnosed with NASH cirrhosis and HCC BCLC B with TACE refractoriness. She received 8 mg of lenvatinib for 2 weeks and began to experience worsening hypertension, bilateral pleural effusion, pedal edema, hypoalbuminemia, hypercholesterolemia, and proteinuria. After exclusion of all possible causes, lenvatinib-induced nephrotic syndrome (NS) was diagnosed. One week after discontinuing the drug, her symptoms gradually improved. To date, there have been only a handful of reported cases of lenvatinib-induced nephrotoxicity. We report herein the case of lenvatinib-induced NS in a cirrhotic patient with HCC with resolution of symptoms in a short period after drug discontinuation. In addition, we reviewed all reported cases of lenvatinib-induced nephrotoxicity.