bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparative Analysis of Fixed-Wing, Rotary-Wing and Hybrid Mini Unmanned Aircraft Systems (UAS) from the Applications Perspective
Authors: RAMESH P. S. , MURUGA LAL JEYAN J. V.
Published: March 2022

Mini Unmanned Aircraft Systems (UAS) present distinct design challenges due to their man-portable, field-deployable profile. The implications of various unmanned aerial vehicle (UAV) design configurations for Mini UAS applications are discussed in this study. Fixed-wing, rotary-wing, and hybrid Mini UAS design configurations are analysed and compared based on performance parameters specified by various manufacturers to assess appropriateness for military and civil applications. Mini UAS designed for military applications can meet most requirements in the civil domain. However, the reverse is seldom feasible because of several restrictions imposed by combat conditions. Fixed-wing Mini UAS have significant limitations for military applications, primarily because of launch and recovery considerations. For civil applications, the fixed-wing configuration provides multiple advantages. The benefit of the rotary-wing configuration's compact size to overcome various battlespace restrictions for military applications does not translate to other performance parameters, and this is a serious limitation for its applications. The hybrid profile has significant design advantages that can be leveraged for both military and civil applications. The interrelation between design, end-use requirements and terrain restrictions presented in the paper provides an insight into the implications of the design configurations of Mini UAS for various applications.
Some practical remarks in solving partial differential equations using reduced order schemes obtained through the POD method
Authors: SOLOMON Alexandru , OLTEI Valentin Claudiu , BOGOI Alina
Published: March 2022

In this paper we address the subject of mathematical modelling, more precisely the optimization of algorithms for numerically solving partial differential equations. The problem proposed to be tackled in this paper is the implementation of an algorithm for solving partial differential equations in a significantly faster way than that obtained through applying finite difference schemes. The proper orthogonal decomposition (POD) method is a modern and efficient method of reducing the number of variables that occur as a result of applying centred difference schemes to partial differential equations, thus reducing the running time of the algorithm and the accumulation of truncation errors. Therefore, the POD method has been implemented to obtain a reduced order scheme applied to different partial differential equations, with some practical applications and comparisons with the analytical solutions.
Effect of the Leading-Edge Sweep on Wrap-Around Fins
Authors: MADHULAALASA K. , SHISHIR P. , PRASAD P. Venkata Sai , MOHANTA P. K. , SAPKALE Swapnil
Published: March 2022

In this paper, the investigation was performed to determine the effect of leading-edge angle and leading-edge sweep on the aerodynamic coefficients of the projectile geometry and analyze the effect of roll moment on the fins at various operating conditions. A group of four models were considered, standard TTCP with the blunt leading edge and with 45° leading-edge along with modified TTCP with the blunt leading edge along with 30° sweep and with 45° leading-edge along with 30° sweep. The flow field solutions were obtained and considered as a function of roll moment coefficients, which are then compared to other numerical models and experimental results. The standard wrap-around TTCP models were subjected to varying velocities ranging from Mach 1.5 to 2.5. WAFs are considered a choice for spinning tube-launched projectiles because of their high packing factor and instant deployment. The computational grids have been built to accurately reflect the fin edge shape of the experimental model. The significant parameter of the WAF is the rolling moment, that was computed using CFD and compared with available experimental test data.
Estimating Machinability Factors in Turning of Inconel 625 under different lubricating conditions using 3D DEFORM FE Analysis
Authors: PADHY Chinmaya , SINGH Pariniti
Published: March 2022

This paper contributes to the investigation of machinability factors in turning the nickel- based Inconel 625 superalloy with PVD coated TiAlN tungsten carbide cutting insert. The machinability parameters – cutting force (Fc), tool wear rate (𝑑𝑑𝑑𝑑𝑑𝑑𝑑𝑑⁄), and tool temperature (T) are visualized graphically using the FE model based Deform 3D software interface. The paper discusses the application of boundary conditions, and meshing used for simulating results. The results of the dry turning simulation showed a maximum level of cutting force, tool-tip temperature, and tool wear rate in comparison with conventional MQL and NMQL conditions. The NMQL conditions showed a reduction in cutting force with the use of h-BN NMQL environment compared with dry and conventional MQL machining by 41% and 27%, respectively. Further, the comparison of cutting tool temperature for three simulated conditions showed a clear-cut reduction of temperature in NMQL conditions in comparison with dry and conventional MQL, by 44% and 30%, respectively.
Oblique laser shock peening effect of the FGH95 superalloy with a PCA and comprehensive index
Authors: Lin Chaohui , Tang Yang , Yu Longwei , Wu Hebin , Xia Chengpeng , Zhang Qi
Published: March 2022

As a metal surface strengthening technology, oblique laser shock
peening uses the force effect of pulsed laser beams to significantly
improve the mechanical properties of materials and prolong service
life. However, the processing of metal parts still requires a high
cost for testing the quality of the finished product. At present,
there is no systematic and complete measurement method or evaluation
system for the finished products of oblique laser shock peening
technology. In this paper, a principal component analysis method and a
comprehensive index method are organically combined to construct a
method for evaluating the effect of oblique laser shock peening of
FGH95 superalloy turbine disks. We measured 10 real data of FGH95
superalloy specimens after oblique laser shock peening by using the
orthogonal test method and verified the data. Based on the evaluation
results, we put forward a series of suggestions to improve the quality
of oblique laser shock peening of FGH95 high-temperature turbine
disks, providing a certain reference and guidance for processing FGH95
superalloy turbine disks.
Building roof extraction from ASTIL echo images applying OSA-YOLOv5s
Authors: Shen Han , Dong Zhiwei , Yan Yongji , Fan Rongwei , Jiang Yugang , Chen Zhaodong , Chen Deying
Published: March 2022

Light detection and ranging (LiDAR) is a type of essential tool for urban planning and geoinformation extraction. Airborne streak tube imaging LiDAR (ASTIL) is a new system with great advantages in the rapid collection of remote sensing data. To the best of our knowledge, a new method to extract a building roof from the echo images of ASTIL is proposed. We improve YOLOv5s with a one-shot aggregation (OSA) module to improve efficiency. The experimental results show that the mean average precision of the OSA-YOLOv5s algorithm can reach 95.2%, and the frames per second can reach 11.74 using a CPU and 39.39 using a GPU. The method proposed can extract building objects efficiently from the echo images of ASTIL and acquire the building roof point cloud.
Influence of ion-beam etching by Ar ions with an energy of 200–1000  eV on the roughness and sputtering yield of a single-crystal silicon surface
Authors: Mikhailenko M. S. , Pestov A. E. , Chkhalo N. I. , Zorina M. V. , Chernyshev A. K. , Salashchenko N. N. , Kuznetsov I. I.
Published: March 2022

The behavior of sputtering yield and the surface roughness of monocrystalline silicon of orientations

⟨

100

⟩

,

⟨

110

⟩

, and

⟨

111

⟩

under the ion-beam bombardment by neutralized Ar ions with energies of 200–1000 eV is studied. The significant dependence (modulation) of sputtering yield on incidence angle due to crystalline structure is observed. It is shown that a sharp increase in the sputtering yield and a decrease in the effective surface roughness at energies above 400 eV occurs. At energies of more than 400 eV for orientations

⟨

100

⟩

,

⟨

110

⟩

, and

⟨

111

⟩

at normal ion incidence, smoothing of the effective roughness in the range of spatial frequencies

ν
∈
[

4

.

9
⋅
1

0

−
2

−

6

.

3
⋅
1

0

1

µ

m

−
1

]

up to a value of 0.17 nm is observed. This makes it possible to use the ion-beam etching technique for finishing polishing, aspherization, and correction of local shape errors of single-crystal silicon substrates, which are of the greatest interest for synchrotrons of the 3rd+ and 4th generation and x-ray free electron lasers.
Anisotropy of thermo-optic properties of beryllium hexaaluminate crystal doped with chromium ions
Authors: Yumashev K. V. , Goman V. I. , Pavlovski L. K. , Vilejshikova E. V. , Yukhnouskaya A. V. , Malyarevich A. M.
Published: March 2022

We determined the thermo-optic coefficients of

C

r

3
+

-doped beryllium hexaaluminate crystal (

C

r

3
+

:

B
e
A

l

6

O

10

) for light polarizations

E

|

|

N
p

,

N

m

, and

N

g

, and present the thermo-optic dispersion formulas for the principal thermo-optic coefficients of

C

r

3
+

:

B
e
A

l

6

O

10

. We also measured the linear thermal expansion coefficients for this crystal in the directions of optical indicatrix axes

N

p

,

N

m

, and

N

g

. Finally, we modeled the thermo-optic dispersion data in accordance with theory, taking into account contributions both from the change of the electronic bandgap with temperature and from the volumetric thermal expansion coefficient.
Visualization of reflectance, transmittance, and application amount distribution of the cosmetic foundation layer on skin
Authors: Yoshida Kenichiro , Okiyama Natsuko , Igarashi Takanori
Published: March 2022

We developed a method for visualization of makeup finishing with structured lighting. By analyzing images with a sequence of projection patterns, reflectance and transmittance of the cosmetic foundation (FD) layer were extracted as spatial maps using the difference between the light spread of bare skin and made-up skin. The spatial maps reflect conditions and distribution of applied FD under real situations. By calibrating the relationship between optical properties and the amount of FD applied, the application amount distribution was also estimated. Additionally, we proposed approximation formulae to estimate the above values without images of bare skin. These formulae provide good agreement with the original formula for reflectance.
Multidimensional trapping by dual-focusing cylindrical vector beams with all-silicon metalens
Authors: Zhu Jia-Lu , Jin Ren-Chao , Tang Li-Li , Dong Zheng-Gao , Li Jia-Qi , Wang Jin
Published: March 2022

Dual-focusing effect with a cylindrical vector-light characteristic (i.e., radial and azimuthal polarizations) is theoretically proposed and numerically demonstrated by spin-decoupled phase control with all-silicon metalens. Attributed to the polarization dependence, the pair of focusing cylindrical vector beams can be interchanged by orthogonally switching the polarization of incident light. We demonstrate the unique contributions of focused radial and azimuthal vector beams to longitudinal and transverse optical forces on glass spheres, respectively, by calculations based on the Maxwell stress tensor. This paper presents the use of all-silicon metalens with highly-compact vector beams, promising for applications such as multidimensional optical trapping.
Detection of Chikungunya virus in bodily fluids: The INOVACHIK cohort study
Authors: Martins Ezequias B. , Silva Michele F. B. , Tassinari Wagner S. , de Bruycker-Nogueira Fernanda , Moraes Isabella C. V. , Rodrigues Cintia D. S. , Santos Carolina C. , Sampaio Simone A. , Pina-Costa Anielle , Fabri Allison A. , Guerra-Campos Vinícius , Santos Nayara A. , Faria Nieli R. C. , Filippis Ana Maria B. , Brasil Patrícia , Calvet Guilherme A.
Published: March 2022

Background

Chikungunya is a widely distributed, re-emerging tropical disease caused by the chikungunya virus (CHIKV). Little is known about the duration for which CHIK RNA are detectable in bodily fluids, especially genital secretions, and current evidence is based on small series or case reports. An understanding of viral dynamics across different body compartments can inform diagnostic testing algorithms and public health prevention interventions.

Methodology

A prospective cohort study was conducted to assess the presence and duration of detectable levels of CHIKV RNA in blood, urine, saliva, semen, and vaginal secretions. Men and women (≥ 18 years) with a positive reverse transcriptase-polymerase chain reaction (RT-PCR) test for CHIKV in the acute phase (1–14 days) of the disease were included. After enrollment, clinical data and samples were collected every 15 days over the first 2 months, and a final collection was performed 3 months after recruitment. The Kaplan–Meier interval-censoring method and the parametric Weibull model were fitted to estimate the median time of viral persistence until the lack of CHIKV RNA detection among all body fluids. Punctual estimates of the median time of CHIKV RNA persistence for each fluid were estimated using a 95% confidence interval (CI).

Results

From April to December 2019, 170 participants were screened. Of these, 152 (100 women) were enrolled in the study. The median and interquartile range (IQR) ages for men and women were 39.3 (IQR: 26.9, 50.7) and 43.5 (IQR: 33.8, 53.6) years, respectively. CHIKV RNA was detected in 80.3% (122/152) of serum samples, 23.0% (35/152) of urine samples, 30.3% (46/152) of saliva samples, 14.3% (6/42) of semen samples, and 20.2% (20/99) of vaginal secretion samples. The median time until the loss of CHIKV RNA detection was 19.6 days (95% CI, 17.5–21.7) in serum, 25.3 days (95% CI, 17.8–32.8) in urine, 23.1 days (95% CI, 17.9–28.4) in saliva, and 25.8 days (95% CI, 20.6–31.1) in vaginal secretion. The number of semen samples available was too small to make statistical estimates, but a last positive sample was obtained from a participant 56 days after the onset of symptoms.

Conclusions

CHIKV RNA could be detected in all bodily fluids studied, including genital secretions during the acute and convalescent phases and additional studies on viral infectivity in semen and vaginal secretions are warranted.
Informal care provision among male and female working carers: Findings from a Swedish national survey
Authors: Vicente Joana , McKee Kevin J. , Magnusson Lennart , Johansson Pauline , Ekman Björn , Hanson Elizabeth
Published: March 2022

Introduction

Informal carers in paid employment–working carers (WKCs)—have complex support needs. However, little is known about WKCs’ pattern of informal care provision, the support they receive, the impact providing care has on their employment, and how these vary between male and female WKCs. This study describes the pattern of informal care provision and received support among Swedish WKCs.

Research method/Design

The study was a cross-sectional questionnaire-based survey of a stratified random sample of the Swedish population aged 18 or over. The questionnaire addressed the type and extent of informal care provided, support received and the impact of care provision on employment. Of the 30,009 people who received the questionnaire, 11,168 (37.3%) responded, providing an analytic sample of 818 (7.32% of respondents) employed or self-employed informal carers.

Findings

A typical Swedish WKC was a middle-aged female, providing weekly or daily care to a non-cohabitant parent, who experiences care as sometimes demanding and receives no formal support as a carer. Female WKCs were more likely than males to care alone and with higher intensity, to report a need for help in meeting their care-recipient’s needs, and to experience care as demanding. Approximately 17% of WKCs reported their employment had been affected due to caring, 40% their ability to work, and 31% their career development opportunities. Female WKCs’ ability to work was affected more than males’, and they were more commonly prevented from applying for work.

Conclusion

Swedish female WKCs compared to males provide more hours of informal care, across more care domains, more often alone. This places them in a challenging situation when combining paid work and care. Greater recognition of the challenges faced by WKCs is required in Sweden and other countries, as are policies to reduce gender inequalities in informal care provision in this group.
Effects of undernutrition on opportunistic infections among adults living with HIV on ART in Northwest Ethiopia: Using inverse-probability weighting
Authors: Alebel Animut , Demant Daniel , Petrucka Pammla , Sibbritt David
Published: March 2022

Background

Opportunistic infections (OIs) are the leading causes of hospitalization, morbidity, and mortality (accounting for 94.1% of all deaths) in people living with human immunodeficiency virus (PLHIV). Despite evidence suggested that undernutrition significantly increases the risk of OIs in PLHIV, to our knowledge, no study has examined the actual effects of undernutrition on OIs in this population, particularly in low-income countries. Thus, this study examined the effects of undernutrition on OIs in adults living with HIV receiving antiretroviral therapy (ART).

Methods

We conducted a retrospective cohort study among 841adults living with HIV receiving ART between June 2014 and June 2020 at Debre Markos Comprehensive Specialized Hospital, Northwest Ethiopia. Study participants were selected using a simple random sampling technique. Data from participants’ medical records were extracted using a project-specific data extraction checklist. The Kaplan Meier survival curve estimated the OIs free survival time. The effects of undernutrition on time to develop OIs was estimated using inverse-probability weighting. Finally, regression coefficients with 95% confidence intervals (95% CIs) were reported, with a statistical significance of p < 0.05.

Results

Of 841 study participants, 262 (31.2%) developed OIs, and the overall incidence rate was 16.7 (95% CI: 14.8, 18.8) per 100 person-years. The incWidence of OIs in undernourished participants (21/100 person-years, 95% CI: 17.8, 27.4) was higher than well-nourished participants (15.0/100 person-years, 95% CI: 12.9, 17.4). When everyone in the population of interest is well-nourished, average time to develop OIs is estimated as 26.5 (coefficient: 26.5, 95% CI: 20.6, 32.4, p < 0.001) months. When everyone in the population of interest is undernourished, average time to develop OIs is estimated as 17.7 (95% CI: 12.8, 22.6) months. However, when everyone is undernourished, average time to develop OIs decreases by 8.8 (coefficient: -8.8, 95% CI: -16.6, -1.0, p = 0.026) months. Lastly, exposure to undernourishment (intervention) (ratio of average treatment effects to well-nourished potential outcome means in this study was a 32.5% reduction in OIs among adults living with HIV on ART.

Conclusion

We found that undernutrition significantly shortened time to develop OIs in adults living with HIV. This implies that the occurrence of OIs in this vulnerable population can be improved through different cost-effective nutritional interventions, such as routine nutritional assessments and education.
Students’ negative emotions and their rational and irrational behaviors during COVID-19 outbreak
Authors: Rezapour Mahdi , Dehzangi Arash , Saadati Farzaneh
Published: March 2022

The pandemic has posed an intense threat to the mental health of younger adults. Despite significant efforts in studying various aspects of COVID-19, there is a dearth of evidence on how negative emotions are associated with behaviors. A comparison across associated factors to different negative emotions by means of a unified model is especially missing from the literature. This study was conducted by using the results of a survey conducted across 2,534 students enrolled in 7 states in the US. Various feelings such as sad, irritable, stress and guilt were analyzed in a unified model by means of seemingly unrelated regression (SUR). Questions were asked related to rationally limiting the spread of virus, and questions related to behaviors that seem to be extreme. Irrational behaviors, such as limiting exercise at home due to COVID-19 could be due to experiencing negative emotions, which distort the meaning of events for the students. That behavior, for instance, was found to be positively associated with various negative feelings. In addition, the results highlighted significant differences across emotions in terms of demographic characteristics such as gender and age, and various precautionary actions that students take, such as limiting outdoor activities or limiting social gathering. For instance, it was highlighted while avoiding a large group of people, in spite of its importance in curbing the spread of virus, is negatively associated with various negative emotions, taking a possible nonconsequential precaution of completely limiting all people outside the immediate family result in a higher level of negative emotions. Also, it was found that having a higher body mass index (BMI), self-rated worse health conditions, and limiting outdoor activities have detrimental effects on the mental health of students.
From the gym to happy hour: The case of oursound
Authors: Santos Djenifer Pereira dos , Souza Flávia Martins de , Silva Luiz Henrique da , Schmitt Tatiani
Published: March 2022

Objective of the study: To portray the value added of the OurSound application to the gym, bars and restaurants sectors, and the challenges faced by the need to expand sales by the owner partners. Methodology/approach: Teaching cade based on real facts, according to management experience of micro and small business. Originality/relevance: The teaching case portrays the activities of the company OurSound, whose differential is that it is a musical interaction application, offered by the owners of their establishments to their customers. Main results: The reflections, learning and possible strategies suggested by students to meet the desire to create value and increase sales (with the consequent expansion of associated establishments, interaction, sociability and engagement between users) of the application studied or similar. Theoretical/methodological contributions: Offering students experience in situations related to the management of micro and small businesses, so that they have the opportunity, being supposedly in the partners’ shoes, to discuss the dilemma presented and seek alternatives to solve it.
GEOTECHNICAL BEHAVIOR OF SILTY CLAY REINFORCED WITH MARBLE DUST AND CORN SILK FIBER
Authors: Mehrooi Saima
Published: March 2022

The motivation behind this research was to learn more regarding the properties of soil strengthened with marble dust and cornsilk fiber, which are industrial waste products and corn products, respectively. The use of these waste materials reduces pollution and human reliance on natural resources, resulting in a more sustainable construction approach.The consequences of cornsilk and marble dust fiber on soil strength prospect for silty clay soil are investigated in this study. Cornsilk was mixed with soil at various rates in this study, including.4 %,.8 %, 1.2 %, and 1.8 %. Furthermore, the length of 40mm long fiber was used in the study. After that, the marble dust was blended in various amounts with the best soil fibre mix, including 5%, 15%, 25%, and 35%. The investigation of an influence of marble dust and cornsilk fiber on Atterbers limits, C.B.R., U.C.S., O.M.C., and D.D. was done. Adding marble dust and cornsilk fiber improved the U.C.S. and C.B.R. As per experimental results, the ideal value of C.B.R. and U.C.S. was at 25 % marble dust, 74.6 % soil and 0.4 % cornsilk fiber
inquisição na França medieval
Authors: Moreira Liz Isa Maria
Published: March 2022

O passado é questionado a partir das demandas políticas do presente. A Igreja Católica, como Instituição hegemónica de poder, tem recorrido à ressignificação da sua memória como ferramenta de atualização política. Sob uma perspectiva teológica, a purificação da memória foi promovida pelo Grande Jubileu na primeira metade da década de 1990, tendo como uma de suas pautas a História das Inquisições. Pela primeira vez, em 1998, o antigo Arquivo Secreto Vaticano abriu as suas portas para a investigação acadêmica, promovendo um debate entre História e Teologia, a partir de documentos inquisitoriais. Pretende-se discorrer acerca das narrativas historiográficas sobre a história da inquisição medieval francesa segundo os Anais publicados em 2003. Buscar-se-á analisar as justificativas teológicas defendidas pelos investigadores, bem como a questão da memória, percebendo os elementos que sustentam tais discursos.
Usos do passado e o holocausto
Authors: Gomes Garcia Fernando , Costa Braga Sabrina
Published: March 2022

Pensar sobre se o Holocausto foi um evento único ou singular é, inevitavelmente, refletir sobre os usos do passado. Certos estudiosos advogam a tese de que a Shoah é sem precedentes e sem paralelos, estando fora da razão e fora da História, sendo um evento inenarrável. Há, por outro lado, os que alegam que foi apenas um genocídio em meio a vários outros e que por trás da tese da unicidade/singularidade se escondem interesses racistas e imperialistas. O debate, muitas vezes ríspido, entre os defensores das duas teses, é esposado por grupos identitários e, muitas vezes, a contenda se torna uma disputa entre qual grupo teria sofrido mais perseguição e violência. Várias vivências são comparadas à dos judeus sob o jugo nazista na reivindicação que os holocaustos, na verdade, são muitos: judeu, armênio, africano, indígena, etc. Assim, o Holocausto assume uma dupla face, paradoxal, de ser ao mesmo tempo um evento único e universal, singular e paradigmático, posto que ao mesmo tempo em que sua singularidade é questionada, também é reivindicada como autoritativa do sofrimento de outros grupos. Neste artigo, pretendemos passar em vista as discussões conceituais sobre o que é genocídio e o lugar que a Shoah ocupa nessa conceituação, mostrando o ponto de vista de autores como Lemkin, Katz, Bauer, Moses, entre outros, e as implicações éticas e representacionais das alegações da unicidade e universalidade do evento.
passado em disputa na Câmara de Deputados
Authors: Brito Tasso
Published: March 2022

O presente artigo tem como objetivo buscar compreender atuação dos deputados federais do PPR, Agnaldo Timóteo, Ricardo Izar e Jair Bolsonaro, que em 1995 propuseram emendas à Lei dos Mortos Desaparecidos Políticos, defendendo uma expansão na figura política e jurídica da vítima para abarcar agentes do estado que foram mortos em ações armadas. Através disso, podemos vislumbrar os limites para o cumprimento dos acordos internacionais dos quais o Brasil é signatário, que estabelecem o que um país deve fazer para restabelecer a democracia depois de um período ditatorial.
APROXIMAÇÃO COMPARATIVA SOBRE O PAPEL DO CIDADÃO EM DIFERENTES PARADIGMAS DE CIDADES
Authors: Chibás Ortiz Felipe , Anjos Carvalho Grazielle , Fonseca Elivelton da Silva , Do Carmo Lima Samuel
Published: March 2022

O presente trabalho tem por objetivo principal realizar uma aproximação comparativa de diferentes tipos de cidadãos constituídos em distintos framework ou paradigmas de cidade, implementados em distintos espaços urbanos. Para isso foi utilizada a metodologia teórico-prática e comparativa, que incluiu levantamento bibliográfico, virtual e sitiográfico. Foram reelaborados dois quadros descritivos e comparativos, que reúnem os principais dados de seis framework de cidades e seis tipos de cidadãos a eles correspondentes. Os paradigmas, frameworks de cidades mais citados e debatidos atualmente, que estabelecem sintonia com os 17 Objetivos do Desenvolvimento propostos pela ONU para 2031, são os mais pertinentes para o enfrentamento da atual situação de pandemia provocada pelo COVID-19. Nas considerações finais pondera-se a respeito de quando utilizar cada framework de cidade.
SOROPREVALÊNCIA DE INFECÇÕES E RISCOS OCUPACIONAIS RELACIONADOS AOS CATADORES DE RESÍDUOS SÓLIDOS DO EXTREMO NORTE DO BRASIL
Authors: Rocha Raphael Barros , Silva João Victor Satrapa , Macêdo Áurea Sérgia da Silva , Reis Jamilla Karla Corrêa , Costa Wagner do Carmo , Ferreira Ana Iara Costa , Ribeiro Leila Braga , Nakashima Fabiana , Bassoli Bruna Kempfer , Costa Bianca Jorge Sequeira
Published: March 2022

Introdução: As atividades ocupacionais relacionadas aos catadores de resíduos sólidos, estão associadas à diversos riscos de cunho biológico, físico, químico, ergonômico, além dos acidentes de trabalho. Objetivo: descrever a prevalência da infecção por agentes virais (Vírus HIV e Vírus da Hepatite B e C) e bacterianos (Treponema pallidum) e avaliar o nível de exposição à riscos ocupacionais dos indivíduos vinculados à cooperativas de catadores de lixo de Boa Vista-Roraima. Métodos: estudo transversal, prospectivo, descritivo, qualitativo e quantitativo, envolvendo 75 indivíduos, de 18 a 70 anos, que atuam como catadores de resíduos sólidos em duas Cooperativas de Reciclagem, na cidade de Boa Vista, Roraima. Foi realizada a investigação dos dados sociodemográficos e ocupacionais por meio da aplicação de um questionário e realizados testes rápidos para detecção de HIV 1 e 2, sífilis e hepatites B e C. Resultados: a prevalência de infecções foi de 4% na amostra analisada, uma vez que três participantes apresentaram diagnóstico positivo para sífilis. Houve associação estatisticamente significativa entre trabalhar há mais tempo como catador e ser mulher e trabalhar há mais tempo como catador e ter baixa escolaridade. Os principais riscos ocupacionais observados foram postura inadequada, levantamento de cargas pesadas, trabalho em pisos irregulares e manipulação de equipamentos possivelmente lesivos. Conclusão: faz-se necessária a criação de políticas públicas que atendam às necessidades destes trabalhadores e a implementação de um processo de educação continuada que aborde os riscos ocupacionais e a importância da utilização correta dos EPIs.
Percepção de agricultores familiares sobre os impactos socioambientais causados pelo Porto do Açu em São João da Barra-RJ
Authors: Pontes da Silva Júnior José Luiz , Pedlowski Marcos Antonio
Published: March 2022

A partir de 2007, um dos maiores empreendimentos portuários do estado do Rio de Janeiro, o Porto do Açu, foi implantado no 50 Distrito do município de São João da Barra. Para a construção de suas megaestruturas, extensas áreas de restinga foram suprimidas e um amplo processo de desapropriação de terras pertencentes a agricultores familiares foi conduzido pelo governo fluminense. O objetivo deste trabalho é verificar a percepção dos agricultores familiares que habitam o entorno do território para entender suas inter-relações com o meio ambiente onde o Porto do Açu foi instalado, antes e após a chegada deste empreendimento. A partir de uma amostra aleatória de agricultores, a coleta de dados foi realizada com um questionário semiestruturado que foi construído para identificar as interferências positivas e negativas do Porto do Açu no 50 Distrito e nos sistemas agrícolas familiares que existiam em seu interior. Duas localidades foram escolhidas para a composição da amostra: Água Preta e Mato Escuro. A aplicação dos questionários ocorreu entre Maio e Agosto de 2019 com um total de 105 agricultores (65 em Água Preta e 40 em Mato Escuro). Os resultados mostraram que os agricultores consideram que o Porto do Açu interferiu diretamente na sua sustentabilidade social, econômica e ambiental. Os principais impactos ambientais e econômicos elencados pelos agricultores foram: a salinização das águas utilizadas para irrigação de suas plantações e o processo de desapropriação de suas terras. Os resultados obtidos mostram que, além de afetar a dinâmica dos ecossistemas costeiros são-joanenses, dentre eles, restinga e lagoas, o modelo de desenvolvimento econômico adotado pelo Porto do Açu alterou a qualidade de vida destes agricultores e interferiu nas suas áreas agrícolas, afetando diretamente a sua reprodução social.
TEACHER AND STUDENT RELATIONSHIP IN THE STORY OF MOSES AND KHIDIR
Authors: Ramadhani Ahmad
Published: March 2022

Di dalam al quran banyak sekali terdapat berbagai kisah yang diungkapkan berulang-ulang di berbagai tempat dan dikemukakan dalam beberapa bentuk yang berbeda-beda. Tujuan dari disampaikannya ayat-ayat yang berisi kisah-kisah dalam al quran tidak lain hanyalah agar seluruh umat manusia dapat bercermin serta mengambil ibrah dari kisah-kisah tersebut. Q.S. al-Kahfi ayat 60-82 menceritakan tentang Musa yang ingin berguru pada Khidir. Dalam cerita di atas terdapat banyak sekali pelajaran yang dapat diambil dan dilihat dari beberapa aspek, salah satunya adalah aspek pendidikan. Tulisan sederhana ini mencoba menelisik nilai-nilai pendidikan dalam surat al Kahfi ayat 60-82. Poin penting yang hendak ditampilkan dalam tulisan ini adalah apa saja kriteria atau sifat-sifat yang seharusnya dimiliki oleh seorang guru dan murid. Hasil dari penelitian ini adalah bahwa sifat-sifat yang harus dimiliki oleh guru yang terkandung dalam surat al Kahfi ayat 60-82 adalah berpengetahuan luas, bertanggungjawab, pemaaf tapi tegas, mau menjelaskan materi pelajaran, dan bijaksana. Sedangkan sifat-sifat yang harus dimiliki seorang murid adalah memiliki kesungguhan, sabar, tawadhu’, sopan, tidak mudah tersinggung, dan tidak bertanya Ketika guru belum mempersilahkan.
THE DEVELOPMENT OF ASSESSMENT INSTRUMENT FOR SPIRITUAL CHARACTER IN KINDERGARTEN
Authors: Faizah Umi , Purwanto Setyoadi
Published: March 2022

The aim of study is the development of a valid and reliable spiritual instrument to assess the achievements of early childhood  spiritual characters in kindergarten/islamic kindergarten. This study using the quantitative and qualitative approaches. The determination of the construct of the spiritual aspect appraisal instrument is done through the opinion of character education experts, measurement experts, TK / RA / PAUD experts and Islamic education experts. From the assessment of 7 experts is then analyzed using Aiken's formula. Which assesses the validity of the contents of the instrument. the subjects of this study were group B in RA DPW UIN Sunan Kalijaga, RA Nurul Dzikri, TK Islam Tunas Melati, and TK Plus Salsabila Pandowo Harjo Sleman Yogyakarta. The reliability of this character assessment instrument was analyzed using cronbach’s alpha. The data collection was using a questionnaire, documentation, interview, observation, as well as Focus Group Discussion (FGD). The results of this study are as follows. (1) Based on the analysis of Formula Aiken's Vasi, the overall result of the indicator has an aiken index of 0.714 to 1,000, when taken on average by 0, 901; (2) The reliability of the developed instrument is quite good, seen from the Cronbach Alpha research is 0.914.
Phytochemical analysis and antioxidant activities of Artemisia stelleriana Besser leaf extracts
Authors: Mayuri M , Asima D , Joseph K S
Published: March 2022

The present study aims to report the proximate and mineral composition, phenolic contents, and antioxidant potential of Artemisia stelleriana leaves. The leaf extracts were prepared using various solvents like distilled water, methanol, ethanol, and acetone and analyzed for their phenolic and flavonoid contents and antioxidant activity. The methanolic extracts showed the highest total phenolic and flavonoid contents (10.09 ± 0.24 mg GAE/g and 225.04 ± 0.38 mg QE/ g, respectively). The methanolic extracts showed significantly higher 1,1-Diphenyl-2-picrylhydrazyl radical scavenging assay (DPPH-RSA), Reducing power assay, and total antioxidant capacity compared to distilled water, ethanol, and acetone extracts. Gas Chromatography-Mass Spectroscopy revealed that the methanolic extracts of leaves to be a good source of bioactive compounds like 2,4-di-tert-butylphenol (2,4-DTBP), neophytadiene, octacosane, and eucalyptol.
Uncertainties in the Measurement of the Cleanliness of Steels
Authors: Stücklin S.
Published: March 2022

Accredited metallography laboratories are required to estimate the uncertainty of the result of every test carried out. This presents a particular challenge in evaluating the cleanliness of a metal as usually a particle distribution – log-normal at best and represented by a tiny sample size – is truncated and split into discrete classes. Therefore, neither indirect (top-down) nor direct (bottom-up) methods succeed in estimating the uncertainty of cleanliness evaluations. For these reasons, such evaluations should be viewed through a process surveillance lens, particularly when discussing results or setting acceptance thresholds.
Future Directions for the HRS Harmonized Cognitive Assessment Protocol
Authors: Torres Jacqueline M. , Glymour M. Maria
Published: March 2022

In the absence of effective pharmacological treatment to halt or reverse the course of Alzheimer’s disease and related dementias (ADRDs), population-level research on the modifiable determinants of dementia risk and outcomes for those living with ADRD is critical. The Harmonized Cognitive Assessment Protocol (HCAP), fielded in 2016 as part of the U.S. Health and Retirement Study (HRS) and multiple international counterparts, has the potential to play an important role in such efforts. The stated goals of the HCAP are to improve our ability to understand the determinants, prevalence, costs, and consequences of cognitive impairment and dementia in the U.S. and to support cross-national comparisons. The first wave of the HCAP demonstrated the feasibility and value of the more detailed cognitive assessments in the HCAP compared to the brief cognitive assessments in the core HRS interviews. To achieve its full potential, we provide eight recommendations for improving future iterations of the HCAP. Our highest priority recommendation is to increase the representation of historically marginalized racial/ethnic groups disproportionately affected by ADRDs. Additional recommendations relate to the timing of the HCAP assessments; clinical and biomarker validation data, including to improve cross-national comparisons; dropping lower performing items; enhanced documentation; and the addition of measures related to caregiver impact. We believe that the capacity of the HCAP to achieve its stated goals will be greatly enhanced by considering these changes and additions.
On the Tits alternative for cyclically presented groups with length-four positive relators
Authors: Isherwood Shaun , Williams Gerald
Published: March 2022

We investigate the Tits alternative for cyclically presented groups with length-four positive relators in terms of a system of congruences (A), (B), (C) in the defining parameters, introduced by Bogley and Parker.
Except for the case when (B) holds and neither (A) nor (C) hold, we show that the Tits alternative is satisfied; in the remaining case, we show that the Tits alternative is satisfied when the number of generators of the cyclic presentation is at most 20.
ExceS-A: an exon-centric split aligner
Authors: Reinhardt Franziska , Stadler Peter F.
Published: March 2022

Spliced alignments are a key step in the construction of high-quality homology-based annotations of protein sequences. The exon/intron structure, which is computed as part of spliced alignment procedures, often conveys important information for the distinguishing paralogous members of gene families. Here we present an exon-centric pipeline for spliced alignment that is intended in particular for applications that involve exon-by-exon comparisons of coding sequences. We show that the simple,blat-based approach has advantages over established tools in particular for genes with very large introns and applications to fragmented genome assemblies.
Optical tracking in team sports
Authors: Rahimian Pegah , Toka Laszlo
Published: March 2022

Sports analysis has gained paramount importance for coaches, scouts, and fans. Recently, computer vision researchers have taken on the challenge of collecting the necessary data by proposing several methods of automatic player and ball tracking. Building on the gathered tracking data, data miners are able to perform quantitative analysis on the performance of players and teams. With this survey, our goal is to provide a basic understanding for quantitative data analysts about the process of creating the input data and the characteristics thereof. Thus, we summarize the recent methods of optical tracking by providing a comprehensive taxonomy of conventional and deep learning methods, separately. Moreover, we discuss the preprocessing steps of tracking, the most common challenges in this domain, and the application of tracking data to sports teams. Finally, we compare the methods by their cost and limitations, and conclude the work by highlighting potential future research directions.
LMO3 promotes proliferation and metastasis of papillary thyroid carcinoma cells by regulating LIMK1-mediated cofilin and the β-catenin pathway
Authors: Ling Zeyi , Long Xiaoli , Wu Ying , Li Jie , Feng Mingliang
Published: March 2022

LIM domain only 3 (LMO3) interacts with transcription factors to regulate target genes involved in embryonic development. The oncogenic role of LMO3 in hepatocellular carcinoma, gastric cancer, and neuroblastoma has been reported recently. However, little is known about the biological function of LMO3 in papillary thyroid carcinoma (PTC). First, expression of LMO3 was dramatically enhanced in the PTC tissues and cell lines. Second, knockdown of LMO3 in PTC cells repressed cell proliferation and promoted cell apoptosis with downregulated Bcl-2 and upregulated cleaved caspase-3/PARP. In vitro cell migration and invasion of PTC were also retarded by siRNA-mediated silence of LMO3. Third, protein expression of LIM kinase (LIMK) 1-mediated phosphorylation of cofilin and nuclear translocation of β-catenin were reduced by the knockdown of LMO3. pcDNA-mediated overexpression of LIMK1 promoted cofilin phosphorylation and attenuated LMO3 silence-induced decrease of cofilin phosphorylation. Last, enhanced LIMK1 expression promoted PTC cell proliferation and metastasis and counteracted the suppressive effects of LMO3 silence on PTC cell proliferation and metastasis. In conclusion, LMO3 promoted PTC cell proliferation and metastasis by regulating LIMK1-mediated cofilin and the β-catenin pathway.
Modification of mechanical properties of Shanghai clayey soil with expanded polystyrene
Authors: Jili Qu , Huan Tao , Weiqing Qu , Guoqi Han , Hongmei Liu , Abulimiti Patanmuhan , Maimaitiyusupu Semaierjiang , Batugin Andrian
Published: March 2022

In the present study, the resistance characteristics of Shanghai clayey soil-expanded polystyrene (EPS) mixture have been explored, using unconfined compressive and consolidation and rebound tests. EPS beads were mixed homogenously with clay soil in accordance with different mass ratios of beads to soil, that is, 0, 0.02, and 0.03%. Four particle sizes of EPS were used in the mixtures, that is, 0.5, 1, 3, and 7 mm, to reconstruct the samples. The experimental results indicated that (1) under the condition of unconfined compressive test, with the increase of EPS particle size, the compressive strength of reinforced soil increases significantly, but the compressive strength of reinforced soil decreases compared with the control sample, and it also decreases with high content compared to low EPS content; (2) under the consolidation and rebound test, compression index and rebound index of reinforced soil increased obviously compared with the control sample, but the compression modulus of reinforced soil decreases significantly; (3) in addition, the ductility of reinforced soil decreases with the increase of EPS particle size but increases compared with the control sample. At the same time, the stiffness of reinforced soil is much decreased compared with the control sample. Finally, the cause of deformation characteristics of reinforced soil was explained based on the feature of EPS material and the interaction between soil particles and particles of EPS beads.
A rare giant intracranial arachnoid cyst confused the diagnosis and treatment of Wilson disease
Authors: Wenbin Zhang , Yeqing Huang , Aiqun Liu , Mingfan Hong , Zhisheng Wei
Published: March 2022

Background

Hepatolenticular degeneration (HLD), also known as Wilson disease (WD), is a rare autosomal-recessive hereditary disease, which is often missed and misdiagnosed because of its various clinical manifestations. And WD is even more rare with giant subarachnoid cysts. In this report, we will provide a case of WD with an intracranial arachnoid cyst (IAC).

Case description

A 27-year-old woman was hospitalized in a traditional Chinese medicine hospital in Guangzhou with the first manifestation of a “slight involuntary tremor of her left upper limb”. There was no improvement after acupuncture treatment, and then she was transferred to another large general hospital in Guangzhou. MRI examination of the head showed “left frontal, parietal and temporal giant subarachnoid cyst” and the patient underwent “left frontotemporal arachnoid cyst celiac shunt operation.” After the operation, the patient’s left limb shaking remained unchanged. Subsequently, the patient was referred to another big hospital in Guangzhou, considered “Parkinson’s disease,” and given “Medopa, Antan” and other treatments. However, the patient’s limb shaking continued to increase and gradually developed to the extremities. At last, the patient was referred to our hospital, combined with the medical history, neurological signs, and auxiliary examination results, improve the examination of corneal K-F ring, blood ceruloplasmin, gene screening, and other tests; the diagnosis was confirmed as hepatolenticular degeneration.

Conclusion

After expelling copper and symptomatic treatment, the condition is improved.
Audiface Diotallevi e Gustav Friedrich Waagen: il carteggio per l’acquisto della Madonna di Raffaello e della Natività di Luini per il museo di Berlino (1841–1842)
Authors: Zavatta Giulio
Published: March 2022

The archive of the Diotallevi family preserves a folder of unpublished letters concerning the purchase of the so-called Diotallevi Madonna by Raphael and a Nativity by Bernardino Luini for the Berlin Gemäldegalerie, which in the Diotallevi collection had been misattributed to Perugino and Garofalo, respectively. The correspondence between the art collector Audiface Diotallevi and Gustav Friedrich Waagen, director of the Berlin museum, documents protracted negotiations during which both buyer and seller politely bargained for advantage. Whilst Diotallevi was keen to bolster the reputation of his collection by the prestigious sale of the two paintings to the Berlin museum, Waagen did his best not to reveal his belief in Raphael’s authorship of the Diotallevi Madonna. The two paintings, reserved for Waagen since December 1841, eventually left Rimini in April 1842, and were sent to Berlin via Rome.
The integration of millet into the diet of Central Asian populations in the third millennium BC
Authors: Motuzaite Matuzeviciute Giedre , Ananyevskaya Elina , Sakalauskaite Jorune , Soltobaev Orozbek , Tabaldiev Kubatbek
Published: March 2022

Stable isotope analyses demonstrate that C4plants played an important dietary role in Eurasian prehistory. Uncertainty remains, however, about when and how crops were integrated into the diet of Central Asian populations. Here, the authors present δ13C and δ15N stable isotope analysis of human and animal bone collagen from Kyrgyzstan, revealing C4plant—likely broomcorn millet—consumption in the third millennium BC. Combining this evidence with AMS radiocarbon dating and animal collagen peptide fingerprinting demonstrates that broomcorn millet was consumed by humans and animals during the earliest episodes of the westward spread of this crop plant. The results contribute to debates about the timing and means by which domesticated millets were dispersed across Eurasia.