bluuebunny/crossref_metadata_2025_split huggingface dataset:
WITHDRAWN: Two-grid Arrow-Hurwicz iterative finite element methods for the stationary magnetohydrodynamics flow
Authors: Yang Yun-Bo , Xia Yan-De 
Published: July 2022

Abstract
In this paper, we propose and analyze three kinds of two-grid Arrow-Hurwicz (A-H) iterative finite element methodsfor the stationary incompressible magnetohydrodynamics (MHD) equations, which adopt the existingA-H iterative method to obtain the coarse mesh solution, and then correct the solution by threedifferent one-step schemes (Oseen type, Stokes type and Newton type) on the fine mesh. These methods combine the A-H iterative method and the two-grid strategy, maintaining the advantage of both methods and overcoming some of their limitations. Rigorous analysis of the optimal error estimate and stability for three methods are provided. Ample numerical experiments are reported to validate the theoretical results and the efficiency of the numerical schemes.Mathematics Subject Classification (2000) 65N15 · 65N30 · 65N12 · 65M12
Positional and Dimensional Relation of Tendons Around the First Metatarsal Bone with Hallux Valgus
Authors: Olgunus Zeliha Kurtoğlu , Çiçek Fatih , Koç Turan 
Published: July 2022

Abstract
It was aimed to reveal whether the positions and dimensions of the extrinsic and intrinsic muscle tendons related to the hallux around the first metatarsal bone are affected by the severity of hallux valgus (HV) and whether tendon positional changes and tendon sizes affect each other. In formalin-fixed 46 feet, three HV angle subgroups (normal, mild and moderate/severe ) were defined. Width, thickness and cross sectional area (CSA) of tendons of the extensor hallucis longus (EHL) and brevis (EHB), abductor hallucis (AH) and flexor hallucis longus (FHL) were measured. On the clock model created in coronal plane, positional variations of each tendon were indicated. In the moderate-severe HV group, thickness and CSA of the EHB, width and CSA of the AH were smaller, compared to mild HV. Width and CSA of the FHL were smaller in moderate/severe HV than in the normal. Regardless of HV, the width and CSA of the FHL was greater in cases where the FHL located more lateral, and the width of both FHL and AT were greater in cases where AH located more plantar. The smaller tendon size of two intrinsic (one plantar and one dorsal) and one extrinsic muscle in the moderate/severe HV group indicates that the changes reflected in the tendons are more pronounced in the case of high HV severity, and the changes are not limited to the tendons on just one side of the foot. The possible biomechanical effects of AH, FHL and EHB tendon dimensional weakness may be important when planning surgery for moderate/severe HV cases.
Machine learning approach to identify cervical lymph node metastasis based on ultrasonic radiomic features and clinical characteristics in papillary thyroid carcinoma
Authors: Zhu Hui , Yu Bing , Li Yanyan , Zhang Yuhua , Jin Juebin , Ai Yao , Jin Xiance , Yang Yan 
Published: July 2022

Abstract
Preoperative prediction of cervical lymph node metastasis in papillary thyroid carcinoma provided a basis for tumor staging and treatment decision. This study aimed to investigate the utility of machine learning and develop different models to preoperative predict cervical lymph node metastasis based on ultrasonic radiomic features and clinical characteristics in papillary thyroid carcinoma nodules. Data from 400 papillary thyroid carcinoma nodules were included and divided into training and validation group. With help of machine learning, clinical characteristics and ultrasonic radiomic features were extracted and selected using randomforest and least absolute shrinkage and selection operator regression before classified by 5 classifiers. Finally, 10 models were built and their area under the receiver operating characteristic curve, accuracy, sensitivity, specificity, positive predictive value and negative predictive value were measured. Among the 10 models, RF-RF model revealed the highest area under curve (0.812) and accuracy (0.7542) in validation group. The top 10 variables of it included age, 7 textural features, 1 shape feature and 1 first-order feature, in which 8 were high-dimensional features. Thus, RF-RF model showed the best predictive performance for cervical lymph node metastasis. And the importance features selected by it highlighted the unique role of higher-dimensional statistical methods for radiomics analysis.
Magnetic resonance imaging evaluation of masticatory muscle changes in patients with primary trigeminal neuralgia before microvascular decompression
Authors: Zhong Qun , Xiao Hui , Zhang Xiaojuan , Wang Chuandong , Zheng Dan 
Published: July 2022

Abstract
Background: Primary trigeminal neuralgia (PTN) is characterized by chronic neuropathic pain. Few studied have explored masticatory muscle changes in patients with PTN. This study evaluated the changes in the masticatory muscles using magnetic resonance imaging and its predictive factors in these patients.Methods: The radiologic outcomes of 52 patients with PTN and 58 healthy adults were evaluated. The temporalis, lateral pterygoid, medial pterygoid, and masseter muscles were assessed using magnetic resonance imaging. Atrophy and edema of the masticatory muscles were noted. Multivariate analyses were conducted to identify factors associated with masticatory muscle atrophy.Results: Among the PTN group, the right side of the mouth (61.5%) and the mandibular branch (53.9%) were most affected. Muscle atrophy of the temporalis (P < .001), medial pterygoid (P = .016), lateral pterygoid (P = .031), and masseter (P = .001) and lateral pterygoid edema (P < .001) were significantly higher in the PTN group than in the control group. Logistic regression analysis demonstrated that neurovascular conflict significantly predicted mastication muscle atrophy (P = .037).Conclusion: Patients with PTN had higher rates of masticatory muscle atrophy and edema. The assessment of neurovascular conflict may be a preoperative imaging biomarker to predict atrophy in PTN.
Surface Wave Inversion Method Based on Convolutional Neural Network and Support Vector Regression Machine
Authors: Liao Jin , Lu Yongxu , Cui Xiaoqin , Peng Suping , Xu Zihe , Shi Haolei , Sun Ronghou 
Published: July 2022

Abstract
Surface wave inversion can be used to detect shallow surface stratigraphic structures. However, the efficiency and accuracy of surface wave inversion is always a problem that earthquake researchers need to consider and solve. To address the highly nonlinear, multi-parameter geophysical optimization problem of surface wave inversion, this study proposes a Rayleigh wave dispersion curve based on a one-dimensional convolutional neural network combined with support vector regression (CNN-SVR). The inversion method improves the inversion efficiency and accuracy of the surface wave to a certain extent. Among them, in the deep learning training stage, the method of refinement and layering was used to process the training set to improve the inversion resolution. The experimental results show that the surface wave inversion method proposed in this paper can better predict the stratigraphic structure in practical data applications, and the prediction error is small, which shows the practicability and superiority of this research method.
Design and Analysis of CompactSubstrate-Integrated Waveguide (SIW)Cavity Resonator Based MicrofluidicBiosensor for X-Band Applications
Authors: S Saranya , B Sharmila , P Jeyakumar , P Muthuchidambaranathan 
Published: July 2022

Abstract
Biosensors are compact miniaturized devices to measure the biologicalsamples based on the molecular structure and convert the sameto electronic signals. The substrate Integrated Waveguide (SIW) cavitybased resonators loaded with a circular cavity can be used as a biosensorin a non invasive manner to detect the biological tissues in the sample with better efficiency and miniaturized structure.The biosensingsamples may vary from proteins to enzymes which has gained ahuge response in the industries likes medical, agriculture, food processingindustry and many more over the decades. The substrate materialof antenna is designed with Rogers RT/Duroid 5870 which has thedielectric constant of 2.33. The Rectangular patch antenna is thenloaded with the SIW vias for an enhanced performance of S parameterfrom -17.21 dB to -44.88dB operating at the X band (8 to 12GHz) frequencies. The microwell made from the Polydimethylsiloxane(PDMS) material is inserted into the patch infrom of circularslot to achieve the biosensing application. The microwell based SIWcavity is then simulated for different diameters of PDMS to improvethe S11 parameter and Voltage standing wave ratio. The fabricatedantenna is tested to work in the TE110 mode at a resonant frequencyof 12.12GHZ with a improved return loss characteristics of -42.45 dB
Prevalence and Risk Factors of Strongyloides stercoralis in Haemodialysis in Cochabamba, Bolivia: A Cross-Sectional Study
Authors: Tebib Nicolas , Tebib Nathalie , Paredes Mauricio , Castro Rosario , Baggio Stéphanie , Torrico Mario Villarroel , Leon Amilcar Alejandro Flores , Zamorano Maya Herbas , Chappuis Francois , Getaz Laurent 
Published: July 2022

Abstract
﻿Background: Strongyloidiasis is an infectious disease that can be fatal in immunocompromised patients. Patients with end-stage renal failure who are on dialysis have a considerably weakened immune system, and kidney transplantation is a major risk factor for severe strongyloidiasis. Knowledge of the local epidemiology in tropical and subtropical areas is an essential prerequisite for designing an appropriate strategy to prevent this potentially lethal complication. In this study, we aimed to estimate the prevalence and associated risk factors of S. stercoralis infection in patients on dialysis in Cochabamba, Bolivia.Methods: A cross-sectional study was carried out among patients undergoing haemodialysis in Cochabamba (elevation 2,500 metres, temperate climate), collecting information on socio-demographic, lifestyle, and clinical variables, and using one coproparasitological technique (the modified Baermann technique) and one serological (ELISA) test.Results: In total, 149 patients participated in the study (mean age = 51.4 years, 48.3% male). End-stage renal disease was predominantly (59%) of hypertensive and/or diabetic origin. The positive serological prevalence was 18.8% (95% CI: 13.3%–25.9%). Based on the sensitivity and specificity of the ELISA test, the estimate of the true prevalence was 15.1% (95% CI: 9.4%–20.7%). Stool samples of 105 patients (70.5%) showed a coproparasitological prevalence of 1.9% (95% CI: 0.52%–6.68%). No potential risk factors were significantly associated with S. stercoralis infection.Conclusions: We found a high prevalence of S. stercoralis in Bolivian patients undergoing haemodialysis in Cochabamba. We recommend presumptive antiparasitic treatment at regular intervals to avoid the potentially fatal complications of severe strongyloidiasis.
The spatial signature of Plasmodium vivax and P. falciparum infections: Quantifying the clustering of infections in cross-sectional surveys and cohort studies
Authors: Sandfort Mirco , Monteiro Wuelton , Lacerda Marcus , Nguitragool Wang , Sattabongkot Jetsumon , Waltmann Andreea , Salje Henrik , Vantaux Amélie , Witkowski Benoit , Robinson Leanne J. , Mueller Ivo , White Michael 
Published: July 2022

Abstract
Background: Over the last decades, enormous successes have been achieved in reducing malaria burden globally. In Latin America, South East Asia, and the Western Pacific, many countries now pursue the goal of malaria elimination by 2030. It is widely acknowledged that Plasmodium spp. infections cluster spatially so that interventions need to be spatially informed, e.g. spatially targeted reactive case detection strategies. We introduce the spatial signature method as a tool to quantify the distance around an index infection within which other infections significantly cluster.Methods: We considered data from cross-sectional surveys from Brazil, Thailand, Cambodia, and Solomon Islands, conducted between 2012 and 2018. Household locations were recorded by GPS and finger-prick blood samples from participants were tested for Plasmodium infection by PCR. We also included cohort studies from Brazil and Thailand with monthly sampling over a year from 2013 until 2014. We calculated the prevalence of PCR-confirmed infections at increasing distance around index infections (and growing time intervals in the cohort studies). Statistical significance was defined as prevalence outside of a 95%-quantile interval of a bootstrap null distribution after random re-allocation of locations of infections.Results: Prevalence of Plasmodium vivax and P. falciparum infections was elevated in close proximity around index infections and decreased with distance in most study sites, e.g. from 21.3% at 0 km to the global study prevalence of 6.4% for P. vivax in the Cambodian survey. In the cohort studies, the clustering decreased with longer time windows. The distance from index infections to a 50% reduction of prevalence ranged from 25 m to 3,175 m, tending to shorter distances at lower global study prevalence. Conclusions: The spatial signatures of P. vivax and P. falciparum infections demonstrate spatial clustering across a diverse set of study sites, quantifying the distance within which the clustering occurs. The method offers a novel tool in malaria epidemiology, potentially informing reactive intervention strategies regarding radius choices of operations around detected infections and thus strengthening malaria elimination endeavours.
Tunable phononic coupling in excitonic quantum emitters
Authors: Li Mo , Ripin Adina , Peng Ruoming , Zhang Xiaowei , Chakravarthi Srivatsa , He Minhao , Xu Xiaodong , Fu Kai-Mei , Cao Ting 
Published: July 2022

Abstract
Engineering the coupling between fundamental quantum excitations is at the heart of quantum science and technologies. A significant case is the creation of quantum light sources in which coupling between single photons and phonons can be controlled and harnessed to enable quantum information transduction. Here, we report the creation of designer quantum emitters featuring highly tunable coupling between single photons and phonons. The quantum emitters are formed in strain-induced quantum dots created in homobilayer semiconductor WSe2. The colocalization of quantum confined interlayer excitons and THz interlayer breathing mode phonons, which directly modulate the exciton energy, leads to a uniquely strong phonon coupling to single-photon emission. The single-photon spectrum features a single-photon purity >92% and multiple phonon replicas, each heralding the creation of a phonon Fock state. Owing to the vertical dipole moment of the interlayer exciton, the phonon-photon interaction is electrically tunable in a wide range, promising to reach the strong coupling regime. Our result demonstrates a new type of solid-state quantum excitonic-optomechanical system at the atomic interface that emits flying photonic qubits coupled with stationary phonons, which could be exploited for quantum transduction and interconnection.
Study of the right hepatic veins based on autopsy and CT three-dimensional reconstruction for the application of right living donor liver transplantation
Authors: Liu Benju , Zhou Tingyong , Lv Fajin , Zhang Lin 
Published: July 2022

Abstract
Purpose
To investigate the anatomy and variations of right hepatic veins (RHVs) for the right hepatic lobe partial living donor liver transplantation (LDLT) by autopsy and multidetector computed tomography (CT).
Methods
The livers of 50 Chinese adult cadavers were dissected and the hepatic veins of 100 normal subjects who underwent CT angiography in the hepatic venous phase with a 64-slice CT scanner were reconstructed. The anatomy and variations of RHVs and the venous drainage of the right half of the liver were observed.
Results
Two types and four subtypes of RHV were identified. Type Ⅰa was the most common type, which accounted for 64% of cadaveric livers and 63% of CT subjects. The beginning and ending of the main trunk of RHV were deeper than the middle section. The distance from the RHV flowing into IVC to the middle hepatic vein (MHV) flowing into IVC was less than 2 cm in 94% of cadaveric livers and 96% of CT subjects. The length between the RHV inflow into IVC and the nearest tributary (≥ 3 mm in diameter) was longer than 1 cm in 44.0% of cadaveric livers and 74.7% of CT subjects. Hepatic venous outflow of the right anterior sector primarily drained through the MHV. The incidence of accessory RHV (ARHV) with a minimal diameter of 5 mm was 32.0% in cadaveric livers and 28.0% in CT subjects. The diameter of the thickest ARHV in the liver was negatively correlated with the diameter of RHV.
Conclusions
Although the RHV is the main outflow vein of the right half of the liver in Chinese people, most of the right anterior sector is also drained through the MHV. The incidence of large ARHV is high. In the right hepatic lobe partial LDLT, the tributaries of MHV and the large ARHV should be reconstructed. CT three-dimensional reconstruction can well display the ARHV with surgical significance.
Population dynamics of Aceria cajani (Acari: Eriophyidae) and efficacy of different insecticides/acaricides on pigeonpea
Authors: A Vasudha , G Umapathy , R Vishnupriya , D Vijayalakshmi , SK Manoranjitham , V Balasubramani 
Published: July 2022

Abstract
The pigeonpea eriophyid mite, Aceria cajani, vector of sterility mosaic disease in pigeonpea, causes economic damage of up to 90% during the early stages of crop growth. The major element in deploying management practice is to know the population dynamics of the pest. The population dynamics of A. cajani both in field and green house conditions revealed that the mite population reached a peak in the summer (March) and another peak in the post-monsoon period (October), whereas the lowest populations were recorded in winter (January). The greenhouse mite population showed similar patterns of seasonal dynamics as in the field. The Principal Component Analysis was conducted to know the significance of variables that influences the mite density.it was found that maximum and minimum temperature are important variables that influence mite density The insecticide and acaricide trials on A. cajani found that spiromesifen, propargite, etna (fenpyroximate + profenophos), fipronil, and etoxazole are effective in reducing the number of mites, followed by diafenthurion, profenophos, and dimethioate. The entomopathogenic fungi formulations, viz., Hirustella thompsoni and Beauveria bassiana, were comparatively less effective to chemicals.
Anionic powdered-nanoliposome loaded with algal oil: Effects of carrier agents on storage stability, in-vitro digestibility and cellular uptake
Authors: Liu Yuanyuan , Feng Xiaoxiao , Zhao Jiahe , Lin Jiale , Shen Cai , Lai Oi-Ming , Tan Chin-Ping , Cheong Ling-Zhi 
Published: July 2022

Abstract
Present study prepared anionic powdered-nanoliposomes loaded with algal oil using phosphatidylserine and different wall materials (maltodextrin and hydroxypropyl β-cyclodextrin). All the powdered liposomes were nanosized (238.97 ± 4.67–256.30 ± 0.85 nm) with negative zeta potential (-71.80 ± 7.84 – -51.46 ± 1.27 mv). We have investigated and compared the effects of different wall materials on the oxidative stability, in-vitro digestibility and cellular uptake of the spray-dried powders were investigated. Results showed MD was able to provide higher oxidative stability to anionic-powdered liposomes loaded with algal oil. In addition, powdered liposomes produced from MD demonstrated better in-vitro digestibility with increased in SLC27A4, FABP2 and CD36 gene expression indicating good cellular uptake of the powdered liposomes.
Effects of environmental factors on avian communities in urban parks in small to medium-sized city
Authors: Dong Kai , Li Yongmin , Li Dongwei , Hu Wenfeng , Xu Gaoxiao 
Published: July 2022

Abstract
With a worldwide expansion of urbanization, the conservation of urban biodiversity is attracting growing attention. It is of great significance to study the relationship between wildlife and urban green space. In this study,we focused on 32 parks in the urban area of Fuyang city in the North China Plain. A total of 8795 individual birds from 69 species were recorded. The study found that (a) at the local level, tree diversity and heights are the most important factors contributing to each level of bird diversity, followed by the coverage of shrubs and herbs; (b) at the landscape level, the proportion of woodland has a strong positive correlation with the multidimensional diversity of birds, followed by the patch diversity and percent of grassland. Our results showed that artificial control of green space structure can effectively increase bird diversity. Increasing the area of urban green space, and at the same time, increasing the proportion of woodland, shrubs, herbs and water in urban parks can provide diverse habitats for birds, thereby improving bird diversity.
Preventing surgical site infection after cholecystitis by postoperative antibiotic: A randomized controlled trial study
Authors: Zabihi-Mahmoudabadi Hossein , Akbari Hamed , Abedi-kichi Raziyeh , Rahimpour Ehsan , Hajebi Reza , Tavakkoli Hassan 
Published: July 2022

Abstract
Purpose: Surgical site infection is one of the most common complications of surgical procedures and the best method for its risk reduction is prevention. The main purpose of this study is to assess the prophylactic role of postoperative antibiotics in reducing the incidence of surgical site infection.Methods: We conducted a prospective, randomized trial at Sina Hospital, Tehran, Iran from 2019 to 2021 to compare the postoperative incidence of surgical site infection and deep wound infection, in patients with mild or moderate cholecystitis who underwent elective cholecystectomy in patients receiving prophylactic antibiotics to those who did not receive antibiotics.Results: The postoperative antibiotics do not associated with a significant decrease in postoperative surgical site infection (P>0.05).Conclusion: Through this study, we demonstrated that postoperative antibiotics did not have a prophylactic role in the prevention of surgical site infection.