bluuebunny/crossref_metadata_2025_split huggingface dataset:
AVALIAÇÃO DO CONHECIMENTO DE DOCENTES DE ODONTOLOGIA DA UNIVERSIDADE DO ESTADO DO AMAZONAS SOBRE MAUS-TRATOS INFANTIS
Authors: De Lima Brendo Benzecry Silva , Pieri Alexandra 
Published: April 2021

O cirurgião-dentista está em situação privilegiada na detecção precoce de maus-tratos infantis, devido ao maior acometimento das lesões na região de cabeça e pescoço, área onde atua. O objetivo deste estudo foi avaliar o conhecimento dos docentes de Odontologia da UEA sobre o papel do cirurgião-dentista nos casos de maus-tratos infantis e seu interesse no assunto. Foram aplicados 45 questionários para um estudo descritivo de corte transversal. Resultados: a maioria possui uma especialidade (75,56%), tempo de atuação entre 16 e 20 anos (31,11%) e atua nos ambientes público e privado (71,11%). 53,33% definiram corretamente maus-tratos infantis. 75,56% citaram incompletamente os tipos de maus-tratos, sendo que físico (71,11%) e psicológico (57,78%) foram os mais citados. De 0 a 10, foi obtida a média 5,71 para a capacidade de identificar maus-tratos. Sinais físicos (84,44%) e comportamentais (77,78%) foram os mais citados. 24,44% já suspeitaram de violência durante atendimento odontológico, destes, 36,36% acionaram o Conselho Tutelar. 55,56% responderam que o Conselho Tutelar é o órgão a ser acionado. 80% não sabem se sofrerão consequências legais caso não notifiquem suspeitas de violência. De 0 a 10, foi obtida média 8,74 para a disposição em receber informações sobre o assunto. Conclusão: Os entrevistados manifestaram conhecimento básico, insuficiente para detecção e manejo das variadas situações de maus-tratos infantis, o que também pode influenciar inadequadamente na abordagem do assunto na graduação. Por outro lado, demonstraram-se sensibilizados e com interesse em se aprimorar sobre o tema.
Label Noise Detection System Against Label Flipping Attack
Authors: Cheng Ning , Zhang Hongpo , Li Zhanbo 
Published: April 2021

Abstract
The label flipping attack is a special poisoning attack in the adversarial environment. By adding noise to the data, it destroys the learning process of the model and affects the decision-making performance of the model. Recent literature work uses semi-supervised learning techniques to defend against label flipping attacks. However, these methods require a clean dataset to achieve their goals. This study proposes a novel label noise processing framework to correct the labels of contaminated samples in the data preprocessing stage. Based on five real UCI datasets, we evaluated the effectiveness of the semi-supervised defensive label noise correction algorithm based on the AdaBoost algorithm(AdaSSL). With a noise ratio of 0~20%, we compared the classification performance of six classic machine learning algorithms (NB, LR, SVM, DT, KNN and MLP) under the AdaSSL defense algorithm. The results show that compared with the most advanced semi-supervised defense algorithms in the literature, our algorithm does not need to use an additional dataset. At a noise ratio of 10%, the AdaSSL algorithm is significantly better than state of the art label noise defense technology.
Cost Effective Design of RC Building Frame Employing Unified Particle Swarm Optimization
Authors: Chaudhuri Payel , Barman Swarup , Maity Damodar , Maiti Dipak Kumar 
Published: April 2021

Abstract
Present paper deals with the cost effective design of reinforced concrete building frame employing unified particle swarm optimization (UPSO). Two building frames with G + 8 stories and G + 10 stories have been adopted to demonstrate the effectiveness of the present algorithm. Effect of seismic loads and wind load have been considered as per Indian Standard (IS) 1893 (Part-I) and IS 875 (Part-III) respectively. Analysis of the frames has been carried out in STAAD Pro software. The design loads for all the beams and columns obtained from STAAD Pro have been given as input of the optimization algorithm. Next, cost optimization of all beams and columns have been carried out in MATLAB environment using UPSO, considering the safety and serviceability criteria mentioned in IS 456. Cost of formwork, concrete and reinforcement have been considered to calculate the total cost. Reinforcement of beams and columns has been calculated with consideration for curtailment and feasibility of laying the reinforcement bars during actual construction. The numerical analysis ensures the accuracy of the developed algorithm in providing the cost optimized design of RC building frames considering safety, serviceability and constructional feasibilities.Further, Monte Carlo simulations performed on the numerical results, proved the consistency and robustness of the developed algorithm. Thus, the present algorithm is capable of giving a cost effective design of RC building frame, which can be adopted directly in construction site without making any changes.
Hippocampal sharp wave-ripples and the associated sequence replay emerge from structured synaptic interactions in a network model of area CA3
Authors: Ecker András , Bagi Bence , Vértes Eszter , Steinbach-Németh Orsolya , Karlócai Mária , Papp Orsolya , István Miklós , Hájos Norbert , Freund Tamás , Gulyás Attila , Kali Szabolcs 
Published: April 2021

Abstract
Hippocampal place cells are activated sequentially as an animal explores its environment. These activity sequences are internally recreated (``replayed'), either in the same or reversed order, during bursts of activity (sharp wave-ripples; SWRs) that occur in sleep and awake rest. SWR-associated replay is thought to be critical for the creation and maintenance of long-term memory. In order to identify the cellular and network mechanisms of SWRs and replay, we constructed and simulated a data-driven model of area CA3 of the hippocampus. Our results show that the chain-like structure of recurrent excitatory interactions established during learning not only determines the content of replay, but is essential for the generation of the SWRs as well. We find that bidirectional replay requires the interplay of the experimentally confirmed, temporally symmetric plasticity rule, and cellular adaptation. Our model provides a unifying framework for diverse phenomena involving hippocampal plasticity, representations, and dynamics, and suggests that the structured neural codes induced by learning may have greater influence over cortical network states than previously appreciated.
Study on Hole Making Process of Thick-section Carbon Fiber Reinforced Plastics
Authors: Li Jianping , Jiao Anyuan , Chen Xiaomei 
Published: April 2021

Abstract
In this paper, the mechanism of helical milling was analyzed at first. Then, the orthogonal experiments on the 24mm thick carbon fiber reinforced composite material (CFRP) that affect the quality of hole making, such as spindle speed, feed per tooth, and number of tool’s blades were conducted. The influence of process parameters on the quality of hole making was analyzed. Finally, the range analysis method was used to obtain the best hole-making parameters: spindle speed is 4500rpm, feed per tooth is 0.02mm/z, the number of tool’s blades is 2. Based on the obtained optimal parameters, the step-by-step hole making of thick-section CFRP with variable parameters was studied, and two sets of parameters were designed. Through the measurement of the hole morphology, roughness, axial force and aperture deviation after the experiment, it is concluded that hole making process with variable parameters can meet the technical requirements of thick-section CFRP.
Biostimulation-phytoremediation of petroleum hydrocarbon contaminated soil: Response surface methodology (RSM)
Authors: Li Jing , Ma Nian , Hao Boyu , Qin Feifei , Zhang Xiuxia 
Published: April 2021

Abstract
In view of the analysis and remediation of petroleum hydrocarbon contaminated soil, the study on ecological technology of oilfield well site was carried out. The response surface was used to optimize the single-factor biological stimulation experiment of moisture content, the leavening agent content and the compound fertilizer content, and get the best experimental plan of biological stimulation. The artificial stimulation-plant combined remediation experiment was designed. Through screening 20 kinds of plant seeds suitable for growth, selected 5 plants with high tolerance to petroleum hydrocarbons. The artificial biostimulation-phytoremediation combined degradation experiment of petroleum hydrocarbons in contaminated soil was designed, and the degradation rate of petroleum hydrocarbons in soil under the optimal ecological remediation scheme was obtained. It was found that petroleum hydrocarbons degradation rate in soil after 70 days artificial stimulation experiment was 28.6%. Through the screening of 20 plants, peanut had the highest tolerance to petroleum hydrocarbons in soil, and the degradation rate in 70 days soil reached 31.1%. After 70 days of biostimulation-phytoremediation, the degradation rate in soil reached 38.9%.
Induction of the ALT pathway requires loss of ATRX-DAXX in concert with genotoxic lesions at telomeres
Authors: Clynes David , Goncalves Tomas , Kent Thomas , Shepherd Sam , Cunniffe Siobhan , Kim Sangwoo , Humphrey Tim , GIbbons Richard 
Published: April 2021

Abstract
A key requisite for indefinite growth of cancer cells is the ability to continuously elongate telomeres to circumvent the onset of senescence or apoptosis. In approximately 10 – 15% of cancers this is achieved through the Alternative Lengthening of Telomeres (ALT) pathway, a Break Induced Replication (BIR) mediated mechanism of telomere copying. ATRX has emerged as the key tumour suppressor in ALT cancers but its loss is insufficient to drive induction of the pathway. Here, we report that depletion of ATRX and/or DAXX in the presence of various genotoxic agents is sufficient to induce ALT. Moreover, co-deletion of ATRX and SETD2, commonly mutated in high grade gliomas (HGGs), elicits induction of ALT. Mechanistically, SETD2 restricts the accumulation of telomeric R-loops, which, in the absence of ATRX, leads to fork collapse and the loss of telomere sister chromatid cohesion. Cumulatively this provides a substrate for out of register BIR and telomere lengthening.
Active control of boundary lubrication of ceramic tribo-pairs in sodium dodecyl sulfate aqueous solutions
Authors: Meng Yonggang , Liu Chenxu , Fang Jingbo , Wen Xiangli , Tian Yu 
Published: April 2021

Abstract
The objective of the study is to actively control friction between engineering ceramics in underwater applications. By designing a proper electrode system and applying an external electric field, the active control of friction between Al2O3 plate and ZrO2 ball in sodium dodecyl sulfate (SDS) aqueous solutions has been realized, which is different from the previous studies of potential controlled boundary lubrication where at least one part of tribo-pairs is a conductor. Reversible change of friction coefficient has been observed in the range from 0.12 to 0.35. An indirect electric field-assisted adsorption model has been proposed to explain the observed phenomena. The addition of inorganic salts containing counterions to the SDS solution or increasing the concentration of SDS can shorten the response time of friction to the variation of the applied electric field by facilitating the formation of SDS micelles. This opens a new way to realize the active control of friction for insulative tribo-pairs without corrosion.
Changes in Physico-Chemical Composition of Wastewater by Growing Phragmites ausrtalis and Typha in an Arid Environment in Saudi Arabia
Authors: Alquwaizany Abdulaziz , Hussain Ghulam , Al-Zarah Abdullah I. 
Published: April 2021

Abstract
Kingdom of Saudi Arabia is facing an acute shortage of good quality of water which is further aggravated due to inadequate and non-renewable groundwater resources. Hence, it is very important to explore other alternatives such as natural wastewater treatment (phytoremediation) for water supplies that can both lower the dependent on groundwater resources and overcome the challenges and limitations associated with conventional wastewater treatment technologies. Therefore, the main objective of this research was to study the performance and efficiency of green plants such as Typha and Phragmites australis for wastewater treatment in eastern Saudi Arabia. The experiment was carried out in fiberglass tanks (each with a capacity of 4.0 x 7.0 x 0.5 m3) in the field. There was a total of 4 fiberglass tanks with 2-replications. A percent decrease of 72.86 and 49.74%, 39.30 and 18.07%, 39.84 and 52.87%, 38.73 and 40.86%, 74.49 and 57.82%, and 66.82 and 63.14% was observed for turbidity, TSS, nitrate, ammonia, BOD, and COD by growing Phragmites australis and Typha, respectively. The heavy metals such as aluminum, zinc, and arsenic showed considerable reduction of pollutants in treated water compared to raw wastewater under both plants. Overall, it seems that the improvement in wastewater quality was better by growing phragmites australis than Typha, however, there were no statistically significant differences between the two plants means in their performance of raw wastewater treatment. The study results indicate that green plants could be used in a phytoremediation system to treat wastewater in rural and small communities.
Spinning Rigid Bodies Driven by Orbital Forcing: The Role of Dry Friction
Authors: de Castro Pablo , Lima Tiago Araújo , Parisio Fernando 
Published: April 2021

Abstract
A ``circular orbital forcing'' makes a chosen point on a rigid body follow a circular motion while the body spins freely around that point. We investigate this problem for the planar motion of a body subject to dry friction. We focus on the effect called \emph{reverse rotation} (RR), where spinning and orbital rotations are antiparallel. Similar reverse dynamics include the rotations of Venus and Uranus, journal machinery bearings, tissue production reactors, and chiral active particles. Due to dissipation, RRs are possible only as a transient. Here the transient or \emph{flip} time $t_\textrm{f}$ depends on the circular driving frequency $\omega$, unlike the viscous case previously studied. We find $t_\textrm{f}\sim\omega^{\gamma-1}\mu^{-\gamma/2}$, where $\mu$ is the friction coefficient and $\gamma=0$ ($\gamma=2$) for low (high) $\omega$.
Whether RRs really occur depends on the initial conditions as well as on $\mu$ and $H$, a geometrical parameter. The critical $H_\textrm{c}(\mu)$ where RRs become possible follows a $q$-exponential with $q\simeq1.9$, a more restrictive RR scenario than in the wet case. We use animations to visualize the different dynamical regimes that emerge from the highly nonlinear dissipation mechanism of dry friction. Our results are valid across multiple investigated rigid body shapes.
Cancer patients’ preferences for psychotherapy: a conjoint analysis
Authors: Ichikura Kanako , Shimizu Sayuri , Oshima Noriko , Ariizumi Yosuke , Fujie Toshihide , Yamauchi Shin-ichi , Ishikawa Toshiaki , Nakajima Yasuaki , Fukase Yuko , Murayama Norio , Murase Hanako , Tagaya Hirokumi , Takeuchi Takashi , Miyake Satoshi , Matsushima Eisuke 
Published: April 2021

Abstract
Aim: Psychotherapy is an effective intervention for depressive cancer patients. However, there are barriers to applying psychotherapy in clinical settings. This study assessed cancer patients’ preferences for psychotherapy using a conjoint analysis.Methods: We conducted a single-center, cross-sectional study using a self-reported questionnaire between March 2018 and March 2020. The questionnaire asked for patients’ preferences for 48 psychotherapy scenarios according to a combination of type, length, price, and frequency. We conducted a conjoint analysis, calculating the relative importance and part worth value of each factor.Results: Cancer patients consider type as the most important factor when deciding whether to undergo psychotherapy (relative importance: 37.5%), followed by frequency (23.4%), price (19.6%), and length (19.5%). Cancer patients value life reviews highly among the four psychotherapy types. Conclusion: Cancer patients consider the type of psychotherapy to be the most important factors when choosing it, although their preferences do depend on their individual characteristics.
Cysticercal Brain Abscess: A Distinct Entity Mimicking Pyogenic Brain Abscess.
Authors: Mhatre Radhika , Konar Subhas , S. Nishanth , Mahadevan Anita , Devi B. Indira 
Published: April 2021

Abstract
Cysticercal brain abscess is a rare entity with the clinical presentation and radiological findings closely mimicking a pyogenic abscess. We report three cases of cysticercal abscess presenting as solitary lesion in the brain with radiological appearance like an abscess. All the patients underwent excision of the lesion with histopathological diagnosis of cysticercal brain abscess. The clinical outcome was satisfactory after surgical excision. Cysticercal abscess, though rare, should be considered as a differential diagnosis of a solitary rim-enhancing lesion, mainly if the patients belong to the endemic zone of neurocysticercosis. Surgical excision with or without a short course of the anti-parasitic agent is the treatment of choice.
Investigation an assisting electrode powder mixed electrical discharge machining of nonconductive ceramic
Authors: Rodic Dragan , Gostimirovic Marin , Sekulic Milenko , Savkovic Borislav , Strbac Branko 
Published: April 2021

Abstract
It is well known that electrical discharge machining can be used in the processing of nonconductive materials. In order to improve the efficiency of machining modern engineering materials, existing electrical discharge machines are constantly being researched and improved or developed. The current machining of non-conductive materials is limited due to the relatively low material removal rate and high surface roughness. A possible technological improvement of electrical discharge machining can be achieved by innovations of existing processes. In this paper, a new approach for machining zirconium oxide is presented. It combines electrical discharge machining with assisting electrode and powder-mixed dielectric. The assisting electrode is used to enable electrical discharge machining of nonconductive material, while the powder-mixed dielectric is used to increase the material removal rate, reduce surface roughness, and decrease relative tool wear. The response surface method was used to generate classical mathematical models, analyzing the output performances of surface roughness, material removal rate and relative tool wear. Verification of the obtained models was performed based on a set of new experimental data. By combining these latest techniques, positive effects on machining performances are obtained. It was found that the surface roughness was reduced by 18%, the metal removal rate was increased by about 12% and the relative tool wear was reduced by up to 6% compared to electrical discharge machining with supported electrode without powder.
Durable tracking anti-SARS-CoV-2 antibodies of cancer patients recovered from COVID-19
Authors: Huang Yongsheng , Yu Jing , Li Dan , He Kai , Liu Wenyang , Wang Lin , Chen Yeshan , Xie Conghua , Wu Xiaowei 
Published: April 2021

Abstract
Cancer patients are more susceptible to SARS-CoV-2 infection and generally have higher mortality rate. Anti-SARS-CoV-2 IgG is an important consideration for the patients in this COVID-19 pandemic. Recent researches suggested the rapid decay of anti-SARS-CoV-2 antibodies in the general population, but the decline rate of the antibodies in cancer patients was unknown. In this observational study, we reported the clinical features of the 53 cancer patients infected by SARS-CoV-2 from two hospitals in Wuhan, China and tracked the presence of anti-SARS-CoV-2 antibodies in the patients for more than 12 months. We found the duration (days) of anti-SARS-CoV-2 IgG in the patients was significant longer in chemotherapy (mean: 175; range: 75 to 315) and radiotherapy groups (mean: 168; range: 85 to 265) than in non-chemo- or radio-therapy group (mean: 58; range:21 to 123) after their recovery from COVID-19. We also used single-cell RNA sequencing to track the immunologic changes in a representative patient infected by COVID-19 for more than one year, and found that CD8 + effective T cells, memory B cells and plasma cells were persistently activated in the patient undergoing chemotherapy. Together, our findings show that chemotherapy and radiotherapy might be beneficial to extend the duration of anti-SARS-CoV-2 IgG.
Single-center Experience with Perioperative Antibiotic Prophylaxis and Surgical Site Infections in Kidney Transplant Recipients
Authors: Ostaszewska Agata , Domagala Piotr , Zawistowski Michał , Karpeta Edyta , Wszola Michal , Kosieradzki Maciej 
Published: April 2021

Abstract
Background
Infections in kidney transplant recipients are particularly challenging owing to the immunosuppressive treatment, usually long history of chronic illness, comorbidities and prior exposures to antibiotics. Among the most common complications early after surgery are surgical site infections. The aim of this study was to identify risk factors and evaluate epidemiological data regarding surgical site infections. Moreover, we were able to compare the current results with historical data from our institution when different perioperative antibiotic prophylaxis was practiced.
Methods
We conducted a retrospective case-control study in a group of 254 deceased donor renal graft recipients transplanted in a single Central European institution. We evaluated epidemiological findings and resistance patterns of pathogens causing surgical site infections. We used multivariable logistic regression to determine risk factors for surgical site infections.
Results
We revealed no differences in baseline characteristics between patients with and without surgical site infections. Ten surgical site infections (3.9%) were diagnosed (six superficial incisional, two deep incisional, and two organ/space). Eight species (19 strains) were identified, most of which were multi-drug resistant (63%). The most common was extended-spectrum β-lactamase producing Klebsiella pneumoniae (26%). We showed that statistically significant differences were present between reoperated and non-reoperated patients (adjusted odds ratio: 6.963, 95% confidence interval: 1.523–31.842, P = .012).
Conclusions
Reoperation is an individual risk factor for surgical site infection after kidney transplantation. According to our experience, cefazolin-based prophylaxis can be safe and is associated with relatively low prevalence of surgical site infections.