bluuebunny/crossref_metadata_2025 huggingface dataset:
Hybrid Nanoelectronic-magnetic Device with Magnetoresistive Effect for logic integrated platforms in Spintronics
Authors: Crisan Ovidiu , Crisan Alina Daniela , Luculescu Catalin Romeo
Published: September 2019

We propose a concept of hybrid nanoelectronic-magnetic device for logic integrated platforms made of magnetic core-shell nanoparticles deposited onto prepatterned Si (111) substrate with basic logic circuitry made of metallic conductive lines. The synthesis of magnetic material and the creation of nanoelectronic prepatterned interdigitated die is reported and its capabilities are demonstrated in terms of magnetotransport properties. The laser pyrolysis method is employed in order to synthesize magnetic core-shell Fe / FeC nanoparticles with sizes between 12 – 15 nm. E-beam lithography has been used in order to design and execute two different layouts of interdigitated die, prepatterned with logic capacity, one with two pads and 50 microns thick conductive metallic lines, another one with 4 pads and parallel 5 microns thick conductive lines separated by 5 microns thick spacer. The as-obtained structures are morphologically characterized by means of optical, scanning and transmission electron microscopies. As-synthesized core-shell nanoparticles have been magnetically characterized inasmuch as the hybrid device obtained by depositing centrifugated and dispersed core-shell nanoparticles from liquid carrier solutions. For the first time, a significant giant magnetoresistive (GMR) effect has been observed and measured for the hybrid architectured device made of Fe / FeC nanosized materials on pre-patterned interdigitated die. A ∆R/R of 8% at 4.2 K has been measured from conductivity-in-plane electron transport measurements. This opens possibilities for the use of such devices as arrays of nanosensors and in spintronic applications.
Large-Scale Land Cover Mapping on Sentinel-1 SAR Imagery Using Deep Transfer Learning
Authors: Šćepanović Sanja , Antropov Oleg , Laurila Pekka , Ignatenko Vladimir , Praks Jaan
Published: September 2019

Land cover mapping and monitoring are essential for understanding the environment and the effects of human activities on the environment. The automatic approaches to land cover mapping are predominantly based on the traditional machine learning that requires heuristic feature design. Such approaches are relatively slow and they are often suitable only for a particular type of satellite sensor or geographical area. Recently, deep learning has outperformed traditional machine learning approaches on a range of image processing tasks including image classification and segmentation. In this study, we demonstrated the suitability of deep learning models to land cover mapping on a large scale using satellite C-band SAR images. We used a set of 14 ESA Sentinel-1 scenes acquired during the summer season over a wide area in Finland representative of the land cover in the country. These imagery were used as an input to seven state-of-the-art deep-learning models for semantic segmentation, namely U-Net, DeepLabV3+, PSPNet, BiSeNet, SegNet, FC-DenseNet, and FRRN-B. These models were pre-trained on the ImageNet dataset and further fine-tuned in this study. To the best of our knowledge, this is the first successful demonstration of transfer learning for SAR imagery in the context of wide-area land-cover mapping. CORINE land cover map produced by the Finnish Environment Institute was used as a reference, and the models were trained to distinguish between 5 Level-1 CORINE classes. Upon the evaluation and benchmarking, we found that all the models demonstrated solid performance, with the top FC-DenseNet model achieving an overall accuracy of 90.66%. These results indicate the suitability of deep learning methods to support efficient wide-area mapping using satellite SAR imagery.
Critical Assessment of the Contemporary Orthopaedic Surgery Residency Application Process
Authors: Li Neill Y. , Gruppuso Philip A. , Kalagara Saisanjana , Eltorai Adam E.M. , DePasse J. Mason , Daniels Alan H.
Published: September 2019

Background:

Matching into orthopaedic surgery residency in the United States has become an increasingly competitive process because of the large number of well-qualified applicants. Over the past several years, applicants have sought to maximize their chances of matching by submitting an increasing number of applications. The purpose of this study was to assess trends in application numbers, applicant qualifications, and application reviews, with the goal of obtaining data to help inform future improvements in the orthopaedic surgery residency application process.

Methods:

Applicant data were obtained from the Electronic Residency Application Service (ERAS, www.aamc.org/services/eras/stats) and the National Resident Matching Program (NRMP, www.nrmp.org/report-archives). These included residency application data from 2000 to 2017. In addition, we analyzed available NRMP Applicant Survey Reports between 2008 and 2017, Program Director Survey Reports between 2008 and 2016, and NRMP’s Charting Outcomes in the Match between 2006 and 2016.

Results:

The number of U.S. senior medical student applicants per orthopaedic surgery residency position was stable from 2000 to 2017 (1.13 vs. 1.16 for 2000 and 2017, respectively). A significant increase in the United States Medical Licensing Examination (USMLE) Step-1 and Step-2 scores and self-reported research activity was present over the same time period. The number of applications submitted per applicant significantly increased, by 71.7%, from 48.4 in 2006 to 83.1 in 2017. Additionally, applications per program increased 46.4% from 457 in 2010 to 669 in 2016. In 2010, programs performed in-depth reviews for 54% of applications; however, in 2016, in-depth reviews had decreased to 45% of applications.

Conclusions:

Orthopaedic residency applicant USMLE scores and research productivity have increased over time. Concurrently, the average number of applications submitted per applicant has increased, with the average applicant applying to nearly half of all orthopaedic residency programs. Consequently, programs have seen more than double the number of applications over this study period. The accompanying decline in the proportion of applications undergoing in-depth review, along with the applicant and program resources associated with these changes, warrants the development of strategies to enhance the efficiency of the application process for orthopaedic residency.
Establishing a canine brain and tissue bank – molecular validation by RT-qPCR targeting three reference genes
Authors: Sándor Sára , Tátrai Kitti , Czeibert Kálmán , Kubinyi Enikő
Published: September 2019

Background: Dogs ( Canis familiaris ) are natural models of several human diseases, including age-related dementia. However, the molecular techniques, which are routinely applied in invertebrate and rodent models to study disease pathologies and mechanisms, has limited applicability in dogs, mainly because of ethical reasons. In the case of humans, the limited accessibility of tissue samples is at least partly solved by biobanks, which collect and store tissues and organs from voluntary donations. A similar approach with pet dogs could support both translational and veterinary research goals by providing access to good quality biological materials obtained from a wide range of dogs with known ancestry, life history and medical background. Therefore, we have established an initiative, the Canine Brain and Tissue Bank, to collect and store biological samples from pet dogs. Objectives: The molecular qualities of tissue samples collected and stored on a tissue bank are crucial for reliable downstream applications. We used quantitative Real-Time PCR methodology to assess the stability of mRNA content in our stored samples. Three previously validated reference genes, GAPDH , HMBS and HPRT1 were chosen as targets. Results: The tested reference genes showed expression patterns and stability values that were consistent with the literature. Conclusions: Based on the results, the molecular quality of tissues collected in the CBTB’s donations system can fit in the standards of dog gene expression analyses.
Prevalence of objectively measured movement asymmetry in yearling Standardbred trotters
Authors: Kallerud Anne Selven , Fjordbakk Cathrine T. , Hendrickson Eli H. S. , Persson-Sjodin Emma , Hammarberg Marie , Rhodin Marie , Hernlund Elin
Published: September 2019

Background Objective measurement of movement asymmetry is gaining in popularity, especially as an adjunct to traditional lameness evaluation. Earlier research has highlighted the need for more knowledge regarding the clinical significance of measured movement asymmetry, and the influence of biological variation. Evaluating the locomotor system of the Standardbred trotter can be challenging, and studies using objective technology on this breed are few. The aim of this study was to quantify the prevalence and magnitude of objectively measured movement asymmetry in young, presumed sound Standardbred trotters, by performing objective movement analysis during in-hand trot and while driven on a track. Our hypothesis was that asymmetry scores would be higher when evaluating horses in-hand versus while driving on a track.Results Of 103 horses included in the study, 77 were measured both in-hand and on the track, 24 were measured only in-hand, and two were measured only on the track. Previously set symmetry thresholds for the measurement system were used, during both in-hand and track trials. The majority of horses (91, 88.3%) did not have any trials below threshold. Front and/or hind limb parameters were above the symmetry thresholds during in-hand trials for 94 (93.1%) horses, and during track trials for 74 (93.7%) horses. For the total 180 in-hand and track trials, 166 (92.2%) trials were above threshold. Asymmetry magnitude ranged from mild to severe, with the majority of horses showing mild asymmetry. A minority of horses (19.7%) switched side of asymmetry for one or more parameters between in-hand and track trials. Trial standard deviations were overall high, mainly due to horse behavior, and this variability should be considered when interpreting the results. There was no significant effect on asymmetry of measuring horses in-hand versus driven.Conclusions A high proportion of presumed sound Standardbred yearlings showed movement asymmetries above previously determined thresholds. The biological and clinical relevance of the study findings may be aided by examining how this asymmetry evolves over time and with training. This is important in order to ensure the welfare of the Standardbred trotter.
Alzheimer’s Disease and Related Dementias: A Qualitative Assessment of Perceived Training Needs of Primary Healthcare Providers in Rural Southwestern Uganda
Authors: Atuhaire Clara Decent , Obua Celestino , Rukundo Godfrey Z. , Haberer Jessica E. , Wakida Edith K.
Published: September 2019

Background: Alzheimer’s disease and related dementias (ADRD)are the third leading cause of years lived with disability, yet patients presenting with ADRD rarely receive proper care at primary healthcare centres (PHC). PHC providers are expected to be at the frontline of ADRD care and are often the first point of contact for patients with concerns about cognitive function; however, PHC providers may not have the knowledge and skills required to deliver person-centred care to patients. We therefore sought to identify the perceived training needs of PHC providers in recognizing, managing, and referring people with ADRD.
Methodology: This was a cross-sectional qualitative study that was conducted in four districts in south western Uganda (Mbarara, Isingiro, Rukungiri, and Kabale). A semi-structured interview guide based on the WHO guide (toolkit) for community-based management and care of people with dementia was used to collect data from PHC providers (medical officers, clinical officers, nurses and midwives)districts.
Results: The key training needs identified included awareness about ADRD among the PHC providers, knowledge on how to recognise, diagnose, manage and refer people with ADRD and in-service continuous medical education for ADRD, which would in turn lead to improved PHC providers’ attitude towards elderly people with ADRD.
Discussion:Results from the study show a lack of knowledge and inability to identify, diagnose and care for people with ADRD by PHC providers at HC III and HC IVs in rural South Western Uganda. However, The Kyoto Declaration of Alzheimer´s Disease International (ADI) provides sufficient guidelines for streamlining dementia care in the primary healthcare system in low- and middle-income countries, which can be operationalized using the WHO toolkit.
Conclusion: The lack of knowledge by PHCPs in rural south-western Uganda in identifying and managing persons with ADRD is an indication of the need to provide in-service training to improve the identification and management and sensitization of patients with signs of dementia.
Key words: Alzheimer’s disease, dementia, training needs, primary healthcare providers
Skin transcriptome analysis of the genes involved in mucous immunity and discovery of SSRs and SNPs in Crucian carp Carassius auratus
Authors: wang ruixia , Hu Xiucai , lv aijun , Sun Jingfeng , Song Yajiao
Published: September 2019

Fish skin is first line of defence against attachment and penetration of pathogens. Crucian carp (Carassius auratus) is one of the major freshwater species and important food fish in China, yet its molecular mechanism of skin immune response remains unclear. In this study, a de novo transcriptome assembly of crucian carp skin was performed by using Illumina Hiseq 2000 platform. A total of 49,154,776 unigenes were assembled, among which 60,824 (25.16%) unigenes were annotated against the NCBI database. Gene ontology and KEGG mapping assigned the terms to 37,103 (39.15%), 9,337 (23.23%) unigenes, repectively. The best represented KEGG categories were immune system (8,871, 20.50%) and signal transduction (7,805, 18.04%), and several mucin proteins (MUC1, MUC2, MUC5B, MUC5AC, MUC18, etc.) as the main membrane-bound and secreted components of the mucosal layer, implying the differentiation of immune responses in the crucian carp skin. Moreover, the results revealed that potential 28,928 SSRs and 249,964 SNPs were detected in crucian carp. This is the first report on transcriptome analysis in the skin of C. auratus, which contribute to understanding the molecular mechanisms of mucous immunogenectics response and epidermal mucus secretion of the skin in fish.
Hub genes of stroke identified by weighted gene co-expression network analysis
Authors: Li Junhong , Zhai Yang , Wu Peng , Hu Yueqiang , Chen Wei , Zheng Jinghui , Tang Nong
Published: September 2019

Background Microarray-based gene expression profiling has been widely used in biomedical research. Weighted gene co-expression network analysis (WGCNA) can link microarray data directly to clinical traits and to identify rules for predicting pathological stage and prognosis of disease, it has been found useful in many biological processes. Stroke is one of the most common diseases worldwide, yet molecular mechanisms of its pathogenesis are largely unknown. We aimed to construct gene co-expression networks to identify key modules and hub genes associated with the pathogenesis of stroke.Results In this study, we screened out the differentially expressed genes from gene microarray expression profiles, then constructed the free-scale gene co-expression networks to explore the associations between gene sets and clinical features, and to identify key modules and hub genes. Subsequently, functional enrichment and the receiver operating characteristic (ROC) curve analysis were performed. And the results show that a total of 11,747 most variant genes were used for co-expression network construction. Pink and yellow modules were found to be the most significantly related to stroke. Functional enrichment analysis showed that the pink module was mainly involved in regulation of neuron regeneration, and the repair of DNA damage, while the yellow module was mainly enriched in ion transport system dysfunction which were correlated with neuron death. A total of 8 hub genes (PRR11, NEDD9, Notch2, RUNX1-IT1, ANP32A-IT1, ASTN2, SAMHD1 and STIM1) were identified and validated at transcriptional levels (other datasets) and by existing literatures.Conclusions Eight hub genes (PRR11, NEDD9, Notch2, RUNX1-IT1, ANP32A-IT1, ASTN2, SAMHD1 and STIM1) may serve as biomarkers and therapeutic targets for precise diagnosis and treatment of stroke in the future.
What is the best angiographic view for detection of coronary artery abnormality in Tetralogy of Fallot? A retrospective study
Authors: Edraki Mohammad reza , Dehdab Reza , Mehdizadegan Nima , Mohammadi Hamid , Amoozgar Hamid , Ajami Gholam hossein , Borzouee Mohammad , Keshavarz Kambiz , Moradi Poria , Dehghani Elham , Bahrami Reza
Published: September 2019

Background The definite treatment of tetralogy of Fallot (TOF) as the most common cyanotic congenital heart disease is open heart surgery and the operation technique depends on the coronary artery anatomy. We aimed to evaluate the sensitivity and specificity of various root Aortogram views to detect abnormal coronary artery configuration and course in these patients.Methods In this retrospective study, the reports of coronary anatomy in angiography and operation notes of TOF patients since 2005 to 2017 were evaluated. The sensitivity and specificity of the two common root Aortogram views including the left anterior oblique/cranial (LAO/CRA) and left anterior oblique/caudal (LAO/CAU) were determined.Results 451 patients with the median age of 28 months (3-432 months) were included. All patients had LAO/CRA views and 199 patients had both LAO/CRA and LAO/CAU views. The rate of coronary abnormalities reported by surgery was 8%, and abnormal origin of the left anterior descending artery from the right coronary artery was the most common reported anomaly (4.4%). The sensitivity of the LAO/CAU view was 100%, but LAO/CRA view was about 75% in detecting abnormal coronary configuration. Both of them had excellent specificity (~100%). No significant sex difference was seen between different coronary anatomy abnormalities.Conclusion The Caudal root angiogram is an essential view to evaluate coronary artery anatomy in TOF patients and it seems that there is no need for other views like lateral view, but relying on LAO/CRA view alone may lead to significant misdiagnosis of the coronary arteries, crossing the right ventricular outflow tract (RVOT).
A systematic review of health economic evaluation of targeted therapies for first-line treatment of metastatic non-small cell lung cancer (NSCLC): Quality evaluation
Authors: Zhao Jie , Du Shuzhang , Liang Yan , Li Hongchao , Chang Feng , Lu Jingli , Ma Xiaohua , Zhang Xiaojian
Published: September 2019

Backgroud: Evolving practice in non-small cell lung cancer (NSCLC) therapy inevitably impacts health care budgets, especially the introduction of targeted therapies. This results in a rise of health economic evaluations (HEEs) in this domain. The objective of this article is to review the quality of the economic evidence of targeted therapies in metastatic NSCLC. Methods: A literature search using Pubmed, Cochrane, Embase and CRD (University of York Centre for Reviews and Dissemination) database was conducted to identify original articles published between 1/1/2000 and 31/3/2019. A quality of reporting assessment using CHEERS (Consolidated Health Economic Evaluation Reporting Standards statement) was translated into a quantitative score and compared with QHES (Quality of Health Economic Studies) evaluation. Results: Twenty-one HEEs were analyzed. In CHEERS assessment, method description integrity (including setting, perspective, time horizon and discount rate), justification of data sources and heterogeneity description were often absent or incomplete. Only four studies reach the standard of good quality. Modeled articles were mainly evaluated by the QHES instrument, lack of illustrated structure, formula of the transitioning probability and justification for the choice of the model were the most frequent problems in selected studies. After quantification, the CHEERS-scores did not differ significantly from QHES-scores. Conclusion: The overall quality of HEEs in NSCLC targeted therapies is not high. In addition, further efforts are needed to improve the standardization of the model application and the transparency of data description, which is indispensable for valid decision-making on scarce health care resource allocation.
Unfavorable impact of scheduled cesarean section at 36 gestational weeks for placenta previa
Authors: Ohshita Mio , Miyamoto Morikazu , Ishibashi Hiroki , Soyama Hiroaki , Nakatsuka Masaya , Iwahashi Hideki , Kakimoto Soichiro , Matsuura Hiroko , Sakamoto Takahiro , Kawauchi Haruka , Hada Taira , Takasaki Kazuki , Takano Masashi
Published: September 2019

Background Pregnant women with no risk factors should have received elective CS later than 37 weeks because the the incidence of respiratory disorder of neonates decreases [5-8]. Hence, the appropriate timing that CS for placenta previa was performed on the side of both the mother and neonate was unclear. This study aimed to evaluate the most appropriate timing of cesarean section (CS) in placenta previa cases. Methods Singleton pregnant women who were scheduled to undergo an elective CS at 36 weeks (Group A) or 37 weeks of gestation (Group B) for placenta previa between August 2003 and July 2018 at our hospital were identified. The timing of CS was decided based on the judgment of the doctor with consideration of the risk of bleeding or faculties adaptation. Maternal and neonatal outcomes between both groups were retrospectively examined. Results There were a total of 272 cases, with 76 cases assigned in Group A and 196 cases in Group B. There was no difference in emergency CS rate (p = 0.36), intraoperative hemorrhage (p= 0.86), total hemorrhage at delivery (p= 0.64), and additional treatment between Group A and Group B. The birth weight of neonates in Group A was smaller (p < 0.001) compared to those in Group B. Apgar scores of neonates at 1 minute (p = 0.04) and 5 minutes (p < 0.01) were lower in Group A than in Group B. Furthermore, neonatal hypoglycemia was higher in neonates of Group A (p < 0.02). Conclusions Regardless of selection bias, there were no merits to perform CS for placenta previa at 36 gestational weeks on both mother and neonate sides. Further studies are required to evaluate when elective CS for placental previa should be scheduled.
Husbands’ participation in birth preparedness and complication readiness and associated factors in Kucha district, GamoGofa Zone, Southern Ethiopia
Authors: Tantu Zinash , Gultie Teklemariam , Estifanos Wubshet , Sidemao Negussie Boti
Published: September 2019

Background Birth-preparedness and complication-readiness (BPCR) is the process of planning for normal birth and anticipating the actions needed in case of an emergency. The involvement of husband during pregnancy and its complication helps an expectant mother to make timely decisions to avoid delays. Therefore, this study aims to assess the level of husband involvement in birth preparedness and complication readiness and associated factors in Kucha District, Gamo Zone, Southern Ethiopia.Methods Community-based cross-sectional study was conducted 421 among husbands with a wife who gave birth within the last 12 months at Kucha District. A simple random sampling technique was used to select the study subjects. Data were collected using a pretested interviewer-administered questionnaire by trained data collectors. Binary and multivariable logistic regression with odds ratios along with the 95% confidence interval analysis were employed to find factors associated with the dependent variable. A p-value <0.05 with 95% confidence level were used to declare statistical significance.Result Data collected from 421 husbands. One hundred twenty-seven (30.2%) husband involved in birth preparedness and complication readiness plan. Husbands who attend secondary and higher level of school (AOR=3.1, CI (1.84-5.23)), husbands whose wives had antenatal care follow up four and above (AOR=4.91, CI (2.36-10.2)), and husbands whose reside more than 5 km from health care facility (AOR=2.35, CI=1.40-3.96)), were significantly associated with husband involvement in birth preparedness and complication readiness.Conclusion Husbands involvement during birth preparedness and complication readiness was 30.2%. Educational level, the frequency of antenatal care, and the distance to the health facility were factors significantly affect the husbands’ involvement.
Low Tunnel and Cultivar Effects on Day-neutral Strawberry Yield and Characteristics in New Hampshire
Authors: Orde Kaitlyn M. , Sideman Rebecca Grube
Published: September 2019

Day-neutral strawberry (Fragaria ×ananassa) cultivars show promise for extending the fruiting season and increasing production in the northeastern United States, but published research on cultivar yield in the region is lacking. Furthermore, few studies have investigated the effects of low tunnels on yield, fruit, and plant characteristics. We evaluated eight day-neutral cultivars (Albion, Aromas, Cabrillo, Monterey, Portola, San Andreas, Seascape, and Sweet Ann) on open beds and under low tunnels in two separate experiments conducted in 2017 and 2018. Cultivars began producing ripe fruit within 10 weeks of planting in both years, and continued producing fruit without interruption for 20 weeks (2017) and 18 weeks (2018). Annual total yield ranged from 234.9 to 497.8 g/plant and marketable yield ranged 126.4 to 389.1 g/plant, depending on cultivar and year. Cultivar significantly affected the percent marketable yield, late season yield, fruit size, soluble solids content (SSC), runner emergence, and plant size. Except for the cultivar Sweet Ann, low tunnels did not increase season-long marketable or total yield, but did increase the percent marketable yield for all cultivars in 2017, and most cultivars in 2018. Furthermore, marketable yield was significantly greater under low tunnels than open beds during 6 late-season weeks in 2018. Fruit SSC was greater under low tunnels in 2018, and low tunnels reduced runner emergence for certain cultivars. Season-long average air temperatures were higher under low tunnels, but the greatest temperature differences occurred when low tunnels were closed. We demonstrate that day-neutral cultivars can produce high annual yields in New England, but that cultivar selection is paramount.
Branched-chain Amino Acids for Use as a Nitrogen Source on Creeping Bentgrass
Authors: Mertz Isaac T. , Christians Nick E. , Thoms Adam W.
Published: September 2019

Amino acids have been reported to improve turfgrass growth compared with mineral nutrition; however, amino acid catabolism in plants has not been well studied. A number of turfgrass fertilizers contain amino acids; however, some amino acids may be more effective additives in fertilizers than others. Three amino acids that could be effective nitrogen sources for plant growth are the branched-chain amino acids (BCAAs). The BCAA leucine (L), isoleucine (IL), and valine (V) could be effective additives because they are nonpolar and hydrophobic, which can promote plant uptake of these compounds. Although the effect of exogenously applied BCAA on plant growth is not well known, BCAAs have been reported to increase protein synthesis in humans, and that rate of increase is related to the intake ratio of L to IL and V. The objective of this study was to evaluate the use of L, IL, and V as a nitrogen sources on creeping bentgrass (Agrostis stolonifera) and to investigate the effect of BCAAs on plant growth when all three are applied as a combination. Using specially made rooting tubes, L, IL, and V were applied in a complete factorial and compared with equal urea nitrogen at four rates, as well as an untreated control. Where all three BCAAs were applied in combination, the application ratios of 2:1:1 and 4:1:1 (L:IL:V) were tested. At 63 days after seeding, there were no differences in root length, root weight, or shoot weight; however, BCAA 2:1:1 and 4:1:1 increased creeping bentgrass shoot density by 24% and 32%, respectively, compared with equal urea nitrogen. Where shoot density was increased, nitrogen application rate had no effect. On the basis of these results, BCAAs applied in a complete combination using ratios of 2:1:1 or 4:1:1 (3.03 lb/acre N) will provide a greater creeping bentgrass shoot density compared with equal urea nitrogen.
Fault diagnosis method for energy storage mechanism of high voltage circuit breaker based on CNN characteristic matrix constructed by sound-vibration signal
Authors: Zhao Shutao , Wang Erxu , Hao Jiawei
Published: September 2019

Aiming at the problem that some traditional high voltage circuit breaker fault diagnosis methods were over-dependent on subjective experience, the accuracy was not very high and the generalization ability was poor, a fault diagnosis method for energy storage mechanism of high voltage circuit breaker, which based on Convolutional Neural Network (CNN) characteristic matrix constructed by sound-vibration signal ,was proposed. In this paper, firstly, the morphological filtering was used for background noise cancellation of sound signal, and the time scale alignment method based on kurtosis and envelope similarity were proposed to ensure the synchronism of the sound-vibration signal. Secondly, the Pearson correlation coefficient was used to construct two-dimensional image characteristic matrix for the expanded sound-vibration signal. Finally, the characteristic matrix was trained by utilizing CNN. Local Response Normalization (LRN) and core function decorrelation were utilized to improve the structure of CNN model, which reduced the bad impact of large data fluctuation of energy storage process on the diagnostic accuracy of circuit breaker energy storage mechanism. Compared with the traditional method, the proposed method has obvious advantages, whose total accurate rate up to 98.2 % and generalization performance is excellent.
Modelling PAHs removal in activated sludge process: effect of disintegration
Authors: Mozo I. , Bounouba M. , Mengelle E. , Lesage N. , Sperandio M. , Bessiere Y.
Published: September 2019

The removal of polycyclic aromatic hydrocarbons (PAHs) in activated sludge was evaluated using two laboratory-scale bioreactors, coupled or not with a disintegration system (sonication). Mass balances performed on each system underlined that PAHs removal was significantly improved after sludge disintegration, especially for the higher molecular weight PAHs studied, which tended to adsorb to suspended matter. A model was developed in order to study the effect of sludge disintegration on the content of dissolved and colloidal matter (DCM), and to predict the potential impacts on PAHs availability and degradation. Results showed that this new model was efficient for capturing apparent degradation improvement trends and for discriminating between the involved mechanisms. This study showed that DCM content increased after sludge disintegration, and proved to be the main driver for improving PAHs apparent degradation.
Competences of physical education teachers in the sports injuries prevention
Authors: Uspuriene Aiste Barbora , Iurgelaitis Vilius
Published: September 2019

School is a place where children spend most of their time. Thus, it is particularly important to ensure that it has a healthy and safe learning environment. Quite often, children experience injuries during physical education classes. Considering to the problem of children injuries in physical education classes, it is important to examine their prevalence, to analyze the causes of injury in physical education classes to prevent or reduce them. There is still a lack of research on the competence of physical education teachers in the prevention of sports injuries. Research aim – to identify the competences of physical education teachers for the sports injuries prevention. Using the questionnaire survey we investigated that physical education teachers pay attention to the warm-up and correct exercise in the physical education lesson. Students are rarely injured in the lessons of these physical education teachers. The research showed that competencies of surveyed physical education teachers are high.
Professional burnout among different age swimming coaches
Authors: Malinauskas Ramualdas Kazemirovich , Grigonis Kazys
Published: September 2019

The aim of the study is to answer the question of whether there are significant differences in the professional burnout among different age swimming coaches. To achieve this goal, the CBQ questionnaire was used for investigation of burnout among sport coaches. The results showed that coaches of "middle" age (31-60 years) have a higher scores of burnout compared to coaches under the age of 30 years.
Sex Differences in the Relationship between PTSD Spectrum Symptoms and Autistic Traits in a Sample of University Students
Authors: Carpita B. , Muti D. , Muscarella A. , Dell’Oste V. , Diadema E. , Massimetti G. , Signorelli M.S. , Fusar Poli L. , Gesi C. , Aguglia E. , Politi P. , Carmassi C , Dell’Osso L.
Published: September 2019

Background:

While growing literature is stressing the link between Autistic Traits (AT) and trauma-/stress-related disorders, in both conditions significant differences have been separately reported.

Objective:

This study aims to evaluate the relationship between AT and trauma-/stress-related symptoms with respect to sex.

Methods:

178 university students were assessed with the Structured Clinical Interview for DSM-5, the Trauma and Loss Spectrum (TALS) and the Adult Autism Subthreshold Spectrum (AdAS). In order to evaluate sex differences in trauma-/stress-related symptoms among subjects with higher or lower AT,the sample was split in two groups with an equal number of subjects on the basis of the median score reported on AdAS Spectrum (“AdAS high scorers” and “AdAS low scorers”).

Results:

Females reported significantly higher TALS total score,Loss eventsandGrief reactiondomain scores than males in the whole sample, while AdAS high scorers reported significantly higher TALS total and domain scores than AdAS low scorers. A significant interaction between high/low AdAS score and sex emerged for TALS domains, with females scoring significantly higher than males only among AdAS low scorers, specifically onLoss events,Grief reaction,Re-experiencingandPersonal characteristics/Risk factorsdomains. Finally, among AdAS high scorers a significantly higher rate of subjects fulfilled symptomatological criteria for PTSD than among AdAS low scorers, without sex differences.

Conclusion:

Our results confirm a significant relationship between AT and trauma-/stress-related symptoms, which seems to prevail on sex differences among high-risk subjects.
An Atypical Case of POEMS Syndrome Associated with Autonomic Dysfunction
Authors: B. Hämmerle Mariana , L. Pires Karina , B. Hammerle Márcia , Vianna P. Galvão Pedro de Mello , L. Bergier Lavinia , V. Vitor , França Silva Monique de , R. Caetano Marcelo , Perez Felix , Reyes Kevin A. , B. Almenara Camila , de Souza Lopes Larissa Cristine , V. Botelho Daiane
Published: September 2019

A 52 year old patient showed, for two years, symptoms compatible with sensorimotor polyneuropathy preventing him from walking. An electroneuromyography found a demyelinating pattern suggesting Chronic Inflammatory Demyelinating Polyneuropathy (CIDP). The patient did not respond to corticosteroid therapy and later suffered sexual Dysfunction, Swelling, Lymphadenopathy, Hypotension, astrointestinal dysmotility, urinary retention and neuropathic pain. Analysis of the Cerebrospinal Fluid (CSF) revealed elevated protein levels and Computed Tomography (CT) scan found sclerotic bone lesions. High Vascular Endothelial Growth Factor (VEGF) levels and the results of Lambda light-Chain monoclonal gammopathy in urine protein Electrophoresis Suggested a Diagnosis of POEMS syndrome. The most striking feature, in this case, was the patient’s heightened and atypical polyneuropathy without axonal injury even after an extended period of time, and significant and atypical dysautonomia.
Primer reporte del escarabajo Acanthoderes funeraria (Bates) (Coleoptera: Cerambycidae) en el agave silvestre Agave cupreata (Trel. & Berger) en Guerrero, México
Authors: Sánchez-Jiménez Eduardo , Orbe-Díaz Diana Iveth , Romero Yanet , Toribio-Jiménez Jeiry
Published: September 2019

Acanthoderes funeraria, es un escarabajo que se alimenta de las hojas de plantas de agave y causa daños graves e irreversibles en las plantas. Se hizo una colecta el 20 de junio de 2018, en el poblado de Petaquillas, Guerrero, para esto se revisaron plantas jóvenes y adultas enfermas, se logró colectar manualmente 60 especímenes y se tomaron fotos, las cuales se enviaron a la CONABIO para su identificación, la cual confirmó la especie como A. funeraria y registró la presencia de ésta para el estado de Guerrero; otros especímenes se encuentran depositados en la colección entomológica de la Facultad de Ciencias Químico Biológicas de la Universidad Autónoma de Guerrero con número de registro 020219fcqb. Este escarabajo se reporta por vez primera sobre agaves silvestres de A. cupreata en el estado de Guerrero, México; además, se describen los daños que éste causa a las plantas.
Leucism in Reithrodontomys mexicanus soederstroemi (Rodentia: Cricetidae), Quito, Ecuador
Authors: Ramírez-Jaramillo Salomón , Bejarano-Muñoz Patricia , Caiza Angélica , Novillo Marilyn , Moreno-Cárdenas Pablo
Published: September 2019

Leucism is a hypopigmentary decrease of skin or fur coat, which is presented throughout the body or as isolated whitish patches on different parts of the body "piebald"; without altering the pigmentation of the eyes, lips, blood vessels or harm to the immune system of the specimen. The specimen was identified in the Tababela plateau located in the inter-Andean valley of Pichincha, Ecuador, site of the new Quito airport. By using glue traps used to capture lizards, one individual of Reithrodontomys mexicanus soederstroemi showing leucism, was trapped in the wild. This individual presents an irregular distribution of melanin pigments throughout it’s body. This is the first case reported with leucism in nature for this endemic species of the inter-Andean xeric valleys near Quito.
Особенности одновременной генерации низко- и высокодобротных мод в гетеролазерах на квантовых точках с большим временем некогерентной релаксации оптических дипольных колебаний
Authors: Кочаровская Е.Р. , Мишин А.В. , Рябинин И.С. , Кочаровский В.В.
Published: September 2019

We investigate the features of multimode steady-state generation of the superradiant heterolasers which have an active medium formed by the quantum dots with long incoherent relaxation time and a cavity of a combined Fabry-Perot type with a distributed feedback of the counter-propagating waves. We show that a quantum-coherent dynamics of the optical dipole oscillations and a population inversion of the working levels in an ensemble of the quantum dots with a strong inhomogeneous broadening of a spectral line may lead to a simultaneous lasing of modes with a various degree of phasing and/or correlation and with qualitatively different dynamical behavior, including quasi-stationary, metastable, self-modulated, pulsed-periodic, quasi-chaotic ones.
Упорядоченные массивы квантовых точек Ge(Si), встроенные в двумерные фотонные кристаллы
Authors: Смагина Ж.В. , Зиновьев В.А. , Родякина Е.Е. , Фомин Б.И. , Степихова М.В. , Яблонский А.Н. , Гусев С.А. , Новиков А.В. , Двуреченский А.В.
Published: September 2019

Two approaches to the integration of ordered Ge(Si) self-assembled quantum dots (QDs) into two-dimensional photonic crystals (PhC) are considered in the paper. The first approach involves the synthesis on the structured silicon surface of the ordered Ge(Si) QD array, on which PhC is then formed. In the second approach, the PhC itself serves as the template for the ordered QD growth. It is shown that varying the diameter of PhC holes in the framework of the second approach, two growth modes of QDs can be realized, when they are formed inside or outside the PhC holes. For structures with ordered QDs built into PhC, an increase in the intensity of the photoluminescence signal was detected at room temperature in the spectral range of 0.9-1.2 eV, which is associated with the interaction of the emission with the radiation modes of PhC.
Омические контакты к эпитаксиальным структурам CVD-алмаза с дельта-слоями бора
Authors: Архипова Е.А. , Демидов Е.В. , Дроздов М.Н. , Краев С.А. , Шашкин В.И. , Лобаев М.А. , Вихарев А.Л. , Горбачев А.М. , Радищев Д.Б. , Исаев В.А. , Богданов С.А.
Published: September 2019

Various methods of the formation of ohmic contacts to CVD diamond epitaxial structures with boron doped delta layers (δ-layers) are investigated. In the first approach, an additional thin, heavily doped layer was formed on the surface of the diamond film, to which the ohmic contact was formed. Then, the surface p+-layer between the contact pads was etched out, so the current flow in the structure occurred only through the buried δ-layer. In the second approach, doped diamond was selectively grown in contact windows under the mask of metal after preliminary etching the undoped diamond layer (cap) to the δ-layer. In this case, the heavily doped p+-layer will form a contact to the δ-layer. These approaches are differs by conditions of applicability, the complexity of manufacturing technology, the value of contact resistance. So they can be used to solve tasks in which different quality of contacts is required, such as the formation of transistor structures or test cells for measuring electrophysical characteristics.
Сравнение радиационной стойкости перспективных биполярных и гетеробиполярных транзисторов
Authors: Шоболова Т.А. , Коротков А.В. , Петрякова Е.В. , Липатников А.В. , Пузанов А.С. , Оболенский С.В. , Козлов В.А.
Published: September 2019

AbstractApproaches to solving the problem of the development of efficient bipolar and heterobipolar transistors operating at radio- and ultrahigh frequencies (0.1–10 GHz), which could be used as active elements of modern Si-based and GaAs-based radiation-resistant analog-digital integrated circuits, are discussed. Comparison of the radiation resistance of prospective “lateral” Si-based bipolar and “vertical” AlGaAs/GaAs heterobipolar transistors with a characteristic base thickness of 70–350 nm is performed. The features of the electron transport in active transistor regions are analyzed in detail and the influence of a surge in the velocity and the diffusion of quasi-ballistic electrons on an increase in the radiation resistance of transistors is evaluated.
Электронные состояния наносистем на основе сульфида кадмия в форме сфалерита
Authors: Заводинский В.Г. , Кузьменко А.П.
Published: September 2019

The electronic structure of nanosystems on the basis of cadmium sulfide in a blende phase (zb-CdS) is investigated using the method of the density functional theory and pseudo-potentials. It is shown that the used approach allows to describe electronic states of this material rather correctly. It is revealed that the surface (100) - zb-CdS is characterized by the metal-like density of electronic states while the surfaces (110) - zb-CdS has a forbidden band at the Fermi level, and nanofilms with this orientation can be used as material for semiconductor devices. Epitaxial layered nanosystems (110) - zb-CdS-Si also show semiconductor properties.
Влияние эффекта перколяции на температурные зависимости вольт-фарадных характеристик гетероструктур на основе композитных слоев наночастиц кремния и золота
Authors: Соболев М.М. , Явсин Д.А. , Гуревич С.А.
Published: September 2019

The temperature dependences of the capacitance-voltage characteristics and the deep-level spectra of the Au – n-Si: Au – Si – p-Si heterostructure based on the composite layer of Au and Si nanoparticles are studied. At a temperature of 300 K, the structure exhibits the properties of a transistor connected in a circuit with a common emitter and a disconnected base and with a Schottky emitter barrier between the point contact Au and the n- (Si: Au) layer. In this layer, nanoparticles form finite clusters, where the conductivity will be hopping, and charge accumulation is observed in the region of the Au contact. At a measurement temperature below 180 K, as a result of the percolation effect, the system moves from the phase of the final cluster to the phase of an infinite cluster exhibiting metallic properties in the lateral plane of the heterostructure, which turns into a p-n diode.
Зарядовое состояние металлических наночастиц на проводящей подложке
Authors: Ильющенков Д.С. , Кожевин В.М. , Гуревич С.А.
Published: September 2019

The work is devoted to the analysis of charge state of a disordered system of metallic nanoparticles positioned on a conductive substrate. A theoretical model has been developed that describes thermally activated electron tunnel transitions between the particles as well as between the particles and the substrate, the last ones being caused by the difference in particle and substrate work functions. The model accounts for the inter-particle charge interactions and for the interaction of the particle charges with the image charges in the substrate. By using Monte Carlo simulations charge distributions in the structures with different nanoparticle densities in a single-layer coating on a substrate were obtained as functions of the dielectric constant of the environment and work function of the particles and the substrate. As an example, results are presented for the structures with Ni and Pt nanoparticles on a carbon substrate, which are often used as catalysts of chemical processes.
Изучение микроструктуры кристаллов Si, подвергнутых облучению быстрыми Н-=SUP=-+-=/SUP=--ионами и термообработке, методами высокоразрешающей трехкристальной рентгеновской дифрактометрии и электронной просвечивающей микроскопии
Authors: Асадчиков В.Е. , Дьячкова И.Г. , Золотов Д.А. , Чуховский Ф.Н. , Сорокин Л.М.
Published: September 2019

The structural features of the formation of radiation defects in proton-implanted layers of silicon wafers during their heat treatment are studied. New data on the nature, characteristics and concentration of microdefects in Si crystals irradiated with protons with energies of 100+200+300 Kev, with a total dose of 2·1016 ion/cm2, and the evolution of the defective structure during heat treatment in a wide temperature range from 200 to 1100°C were obtained from the analysis of the results of studies by high-resolution three-crystal X-ray diffractometry and transmission electron microscopy.

This work was supported by the Ministry of Science and Higher Education within the State assignment FSRC «Crystallography and Photonics» RAS.
Структура и магнитные свойства керамики (Ni-=SUB=-1-x-=/SUB=-Zn-=SUB=-x-=/SUB=-)Fe-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=- с пространственным изменением состава
Authors: Шут В.Н. , Сырцов С.Р. , Трубловский В.Л. , Vijatovic Petrovic M.
Published: September 2019

The samples of homogeneous (x = 0; 0.1; 0.2) and multilayer ceramics with “oncoming” compositional gradient (x = 0.2→0→0.2) based on solid solutions of nickel – zinc ferrites (Ni1–xZnx) Fe2O4 have been prepared by thick-film technology. It was possible to ensure the synthesis of ceramics and to maintain inhomogeneous distribution of chemical elements throughout the thickness of the graded samples using the two-stage mode of heat treatment. Microstructure and crystal structure of the materials are studied. It is shown that the volume of the unit cell increases with increasing zinc content, while the grain size does not change significantly. The features of the magnetization of multilayer structures were investigated for two variants of application of external magnetic field (parallel and perpendicular to the sample plane). The resulting hysteresis loop for multilayer graded sample can be obtained by “summing up” the loops of homogeneous layers of the structure. No internal fields leading to a shift and distortion of the magnetic hysteresis loops were detected.