bluuebunny/crossref_metadata_2025 huggingface dataset:
How Can Ablative Cooling in A Solid Propellant Rocket Engine Be Accurately Modelled in Order to Optimise Performance?
Authors: Bhanji Sassan
Published: August 2022

Abstract: This essay investigates the use of ablative cooling in solid propellant rocket engines. It begins by exploring the mechanisms by which ablation occurs. It then demonstrates how heat transfer to an ablator can be modelled, and how this can be used to find ablator recession rate and hence the necessary ablator thickness for a rocket engine. It does so by considering simplified mathematical models. These are then compared to the more complex models that have recently been developed. The different variables involved and how they might be used or calculated are discussed. The next section of the essay ties this theoretical knowledge and modelling into practical engineering use by considering the impact ablation has on performance. MATLAB is used to demonstrate how an expanding throat diameter of the nozzle can decrease thrust and specific impulse, and that this can greatly decrease payload capacities. Other variables involved in creating a thrust profile for a solid propellant rocket engine are considered. Finally, the essay will look at how to choose an optimal ablator. It goes through the universally desirable characteristics and uses the Space Shuttle SRMs as an example of disadvantages that may not initially be considered when selecting an ablator
Revisitando políticas latinoamericanas de género. Una operación histórica sobre las disrupciones genealógicas en los discursos de las cuotas femeninas del sur
Authors: Videla Hernán
Published: August 2022

Desde finales del siglo XX Occidente, en pleno proceso de globalización y metamorfosis liberal del capitalismo, se mostró cuestionado profundamente por la ebullición de diferentes movimientos sociales que pondrían en crisis las tradicionales cosmovisiones políticas, organizativas y públicas de los estados. Dicho orden, probablemente el constructo clásico de las revoluciones modernas, comenzaba a verse resquebrajado por sectores marginados de la toma de decisiones.

En este contexto, las miradas políticas nacionales realizaron cierto giro programático hacia la periferia: Argentina se convirtió en el primer país del mundo en reconocer la asimetría patriarcal que el sistema político republicano había garantizado mediante sus principios liberales. Instrumentó una legislación específica que reivindicaba acciones positivas para obligar a los partidos políticos, otros grandes relictos de la modernidad occidental, a incorporar en sus listas militantes mujeres con posibilidades de resultar electas. Pronto, con desiguales variables, la región adheriría a esta praxis política.

Este trabajo pretende ofrecer un estudio histórico que refleje la problemática de la representación parlamentaria femenina en los ámbitos nacionales de determinados estados sudamericanos. Para ello se empleará una metodología cualitativa de carácter histórico entramada conceptualmente con los enfoques teóricos de la Historia Reciente y la Historia de Género.
Visiones y perspectivas sobre la educación femenina en Chile en el temprano siglo XIX: el inicio de la desventaja educativa (1812-1823)
Authors: Silva Guevara Salomé
Published: August 2022

El objetivo de este trabajo es indagar en las visiones, perspectivas y tensiones en torno a la educación femenina en los albores de la República de Chile, a partir de la documentación oficial y prensa de la época. De esta manera, podemos reconstruir una parte de la historia fragmentada sobre lo femenino en la esfera pública nacional. Sostenemos que no hubo plan de estudios formal y que la educación femenina no fue una prioridad en los albores de la sociedad chilena, ya que la mujer era concebida como un sujeto ambivalente no apto para desenvolverse en el mundo público, reflejo de la construcción social occidental a través de los clásicos, la religión y lo esotérico.
Práctica y creación musical femenina en Santiago de Chile a mediados del siglo XIX. El caso de Delfina Pérez
Authors: Vera Malhue Fernanda
Published: August 2022

Durante la segunda mitad del siglo XIX la creación y la práctica musical de repertorio de salón en contextos privados fue una actividad considerada como apropiada para la expresión artística de las mujeres burguesas de la época. En tanto prácticas, dialogaron con la literatura y la poesía y formaron parte del mismo modelo de educación ilustrado y moderno, y encontraron su lugar de expresión en el espacio semipúblico del salón.

      El presente artículo busca poner en duda que Delfina Pérez fue el seudónimo artístico de Delfina de la Cruz, una mujer música chilena que vivió a mediados del siglo XIX. Mediante una revisión crítica de la prensa de la época, de las partituras conservadas en distintos archivos más el análisis de la historiografía musical que la menciona es que este artículo busca entregar las pruebas suficientes que permitan afirmar que a mediados del siglo XIX existieron en Chile dos mujeres llamadas Delfina que interpretaron y compusieron música bajo los cánones de la época. De manera específica, se busca visibilizar a Delfina Pérez como una mujer música y compositora profesionalmente activa durante casi toda la segunda mitad del siglo XIX.
22 em 22: o centenário da Semana de Arte moderna pelos “olhos” da Abordagem Triangular
Authors: Medeiros Rosana Fachel de
Published: August 2022

Esse artigo apresenta um projeto que está sendo desenvolvido na disciplina de Artes em uma escola pública - de Canoas, no RS - para abordar a Semana de Arte Moderna no marco dos cem anos de sua realização, tendo como fundamentação a Abordagem Triangular (BARBOSA, 1991). O projeto parte do estudo e da pesquisa do movimento artístico-cultural modernista e de suas e seus artistas para, em seguida, selecionar algumas de suas obras emblemáticas como inspiração para diferentes propostas de criações. Com o objetivo de proporcionar às e aos estudantes a contextualização tanto no estudo das obras de arte quanto em suas incursões em diferentes fazeres artísticos.
Changes in pediatric injury-related visits during coronavirus disease 2019 pandemic at a single regional emergency medical center in Korea
Authors: Nam Doo Hyeon , Jung Si Young , Bae Sohyun
Published: August 2022

Purpose: This study was aimed to investigate the changes in pediatric injury-related visits at an emergency department (ED) during coronavirus disease 2019 pandemic.Methods: We retrospectively compared injury-related visits to an ED in Korea by children aged 15 years or younger during February 2020-December 2021 (pandemic period), and the visits during February 2018-December 2019. Clinical characteristics, injury mechanisms, diagnostic codes, and ED outcomes were noted. We performed 2 sub-analyses of the pandemic period: biannual changes in the visits, and monthly trends of proportions of concussion and superficial injury as diagnostic codes using linear regression. Results: Despite a 51.2% reduction in injury-related visits during the pandemic, the proportion of the visits increased (25.2% vs. 40.0%; P < 0.001). Overall, increases were noted in proportions of use of emergency medical services and high acuity (P < 0.001). Among the diagnostic codes, brain injuries, fracture and dislocation, and laceration increased while superficial injuries, burn, intoxication, and foreign body ingestion decreased (P < 0.001). As the pandemic prolonged, injury-to-ED time shortened and ED length of stay lengthened while the abovementioned trends remained unchanged. Linear regression showed that the proportions of concussion and superficial injury respectively increased and decreased by 0.01% per month (P < 0.001). Conclusion: The changes in pediatric injury-related visits at the ED during the coronavirus disease 2019 pandemic may serve as a basis for distributing emergency medicine resources in future infectious disease outbreaks.
Comparison of prenatal ultrasonography and fetal MRI in diagnosing neural tube defects: A prospective observational study
Authors: Sun Mengchun , Gao Gan , Tao Benzhang , Wang Hui , SHANG AIJIA
Published: August 2022

Objective: To compare the diagnostic accordance rate between prenatal
ultrasonography and fetal magnetic resonance imaging (MRI) for varied
neural tube defects (NTDs), and introduce detailed prenatal imaging
characteristics of multiple NTDs. Design: A prospective observational
study Setting: Chinese PLA General Hospital Population: The fetuses
developing possible NTDs. Method: We prospectively followed up the
fetuses and collected their data of prenatal ultrasonography, fetal MRI,
and postnatal MRI examinations. Fisher’s exact test was used to perform
the statistical analysis. A P value of < 0.05 was considered
statistically significant. Main Outcome Measures: The diagnostic
accordance rate of prenatal ultrasonography and fetal MRI for each
involved NTD, prenatal imaging characteristics of each involved NTD.
Results: We included 119 fetuses with 11 NTDs. Ultrasonography revealed
a significant advantage in diagnosing spina bifida (P < 0.05)
and a relative advantage in diagnosing intraspinal cyst, dermal sinus,
and skin mass. MRI demonstrated intraspinal lipoma better (P <
0.05), and was appropriate for identifying complex malformations. Both
could accurately diagnose tethered cord syndrome (without intraspinal
lesions), meningocele/myelomeningocele, and sacrococcygeal teratoma.
Conclusions: Prenatal ultrasonography and fetal MRI have different
advantages in diagnosing NTDs. To ensure a prompt and accurate
diagnosis, it is crucial for clinicians to raise awareness of the
prenatal imaging characteristics of various NTDs, which will lay a solid
foundation for better fetal prognosis. Funding: This study was supported
by the Capital’s Funds for Health Improvement and Research
(CFH2022-2-5022). Keywords: prenatal ultrasonography, fetal magnetic
resonance imaging, neural tube defects, pregnancy, diagnosis, fetus
The vaginal outlet wall anatomy: A prospective case series study
Authors: Ostrzenski Adam
Published: August 2022

The vaginal outlet wall anatomy: A prospective case series study
Abstract Objectives To describe and document the anatomical and
histological architecture of the vaginal outlet wall. Design A
prospective observational case series study. Setting International
centers. Population Twelve fresh human female cadavers. Methods Female
corpses were subjected to stratum-by-stratum, macro-, and
micro-anatomical dissections in sagittal, transverse, and coronal
planes. The multiple excisional biopsies were obtained from the vaginal
outlet wall at 12, 3, 6, and 9 o’clock locations for histological
examination. Digital photograms documented the anatomical and
histological features. Primary Outcome measures Gross, topographic
anatomy, and characteristic histologic features of the vaginal outlet
wall. Results The vaginal outlet wall (VOW) was positioned in the
vertical orientation and fused with horizontally located the vaginal
wall at the hymeneal plate level. The hymeneal membrane and ring were
not attached directly to the vaginal wall. VOW had three identifiable
anatomical-histological layers a) the hymeneal membrane, b) the hymeneal
ring (cartilage) with different anatomy and histology than the vaginal
wall, and c) the hymeneal plate (the deep level of VOW), which connects
to the vaginal wall. Conclusions The vaginal outlet wall is an
anatomical structure consisting of the hymeneal membrane, hymeneal ring
(cartilage), and hymeneal plate. This structure is in vertical
topographic orientation. Anatomically and histologically, it differs
from the vaginal wall, which fuses with the deep layer of the hymeneal
plate.
Investigation of bioactive nanofiber-based scaffolds for cultivated meat.
Authors: Santos Ana Elisa Antunes dos , Cotta Tiago , Santos João Paulo Ferreira , Camargos Juliana Sofia Fonseca , Carmo Ana Carolina Correia do , Alcântara Erika Gabriele Alves , Fleck Claudia , Copola Aline Gonçalves Lio , Nogueira Júlia Meireles , Silva Gerluza Aparecida Borges , Jorge Erika Cristina , Andrade Luciana de Oliveira , Ferreira Roberta Viana
Published: August 2022

Synthetic polymers scaffolds often need to be coated with extracellular
matrix (ECM) proteins to improve cell adhesion. For cultivated meat
applications, coating should be avoided since it is necessary to
eliminate expensive and animal-derived components. As cellulose acetate
nanofibers is a low-cost cellulose-derived material, that induces cell
adhesion and proliferation, we investigated its use associated with a
bioactive annatto extract, a food-dye and potential meat preservative,
as scaffolds for cultivated meat. Here, the bioactive electrospun
nanofibers were evaluated through morphological, mechanical and
biological characterizations. The results revealed that the scaffolds
were porous with no specific alignment and average fiber diameter of
420±212 nm. Molecular analyzes revealed that in contrast to cellulose
acetate scaffold, annatto-loaded cellulose acetate scaffold favor a
proliferative state of C2C12 mouse skeletal myoblasts. SEM microscopy
images suggests that the nanofiber substrates can sustain long-term
culture of the cells, up to 28 days. These results suggest that the
combination of cellulose acetate fibers loaded with annatto extract may
be an interesting economical alternative for support long-term muscle
cells culture with potential application as a scaffold for cultivated
meat and muscle tissue engineering.
A Wide-input high-PCE rectifier based on AC magnitude coupling adjustment
Authors: Li Xiaofei
Published: August 2022

This letter presents a novel structure of passive rectifier unit working
in very high frequency (VHF) which could be used in implant devices in
medical field or in sensor devices in internet of things (IoT)
applications. The proposed rectifier utilized AC magnitude coupling
adjustment technology which can effectively improve the PCE performance
when the input voltage is high. Thus, the rectifier can hold high power
convention efficiency (PCE) in a wide input range. The proposed AC
magnitude coupling adjustment technology is based on tuning the
capacitance, thus can adjust the coupled AC magnitude on the gate of the
corresponding MOSFET. According to our simulation, the proposed
rectifier structure can effectively improve the PCE performance when the
input voltage is high, which can achieve a PCE higher than 60% in a
wide input voltage range from about 0.8V to 3.3V.
Abernethy malformation with unusual cardiac malformation: case report and literature review
Authors: Xu Liyuan , Zhang Hongju , Liu Guowen , Li Yunpeng , Li Di , Ma Ning
Published: August 2022

Abernethy malformation, also known as congenital extrahepatic shunt, is
a rare anomaly characterized by partial or complete diversion of the
portal blood into the systemic venous circulation. The clinical
manifestations of Abernethy malformation during childhood include
neonatal cholestasis, failure to thrive, mental retardation, and other
congenital defects. We report a case of Abernethy malformation Type Ⅱ in
a 9-year-old boy whose left ventricle was slightly enlarged because of
several major aortopulmonary collateral arteries but normal laboratory
examinations five years earlier. The characteristics of congenital heart
disease in patients with Abernethy malformation are discussed. We
propose that enlargement of the left ventricular with systemic-pulmonary
collateral circulation should raise the suspicion of Abernethy
malformation.
Bayesian evaluation of temporal changes in sensitivity and specificity of three serological tests for multiple circulating strains of rabbit haemorrhagic disease virus
Authors: Patel Kandarp K. , Toft Nils , Kovaliski John , Page Bradley , Appuhamilage Ridma M.J. Jayasinghe Ellakkala , Taggart Patrick
Published: August 2022

Competition and indirect ELISAs are currently being used to monitor
rabbit hemorrhagic disease viruses (RHDV1 and RHDV2) in rabbits
worldwide. Temporal changes in the sensitivity (Se) and specificity (Sp)
of assays were investigated using Bayesian Latent Class models (BCLM) in
the Australian wild rabbit population where both viruses circulate
simultaneously and a long-term serological dataset exists. When cELISA1
was compared to IgG1 ELISA, the Se of cELISA1 improved while the Sp of
IgG1 ELISA declined over the 2011-2021. This corresponded with a decline
in the true RHDV1 prevalence in 2018-21, suggesting that a large
proportion of RHDV1 exposed rabbits survived the introduction and
dominance of RHDV2 up to approximately 2017/2018, after which they died
and were not replaced. The Se and Sp estimates for 2014-15 for both
cELISA1 and IgG1 ELISA, and the true prevalence when analysing all three
tests together were similar to those obtained from the analysis of
cELISA1/IgG1. The same was also true for the Se and Sp of cELISA2 and
IgG1 estimates from 2018 onwards. This suggests that RHDV1 was the
dominant infection status in 2014-15, but RHDV2 was the dominant
infection status in 2018-2021. Further, the increase in Se of cELISA2
and the low Sp of IgG1 ELISA in the cELISA2/IgG1 ELISA analysis,
compared to the Se of cELISA2 and Sp of IgG1 ELISA when analysing all
three tests together suggests that the underlying infection status was
more influenced by RHDV2 and that the higher Se of IgG1 ELISA is due to
cross-reaction of RHDV2 antibodies on IgG1 ELISA. The true prevalence
data suggests that RHDV2 exposure peaked in 2017. Our findings show that
test characteristics changed in response to the changing virus
prevalences over time. IgG1 ELISA currently has a high Se, should be
used to monitor both viruses and will perform better than both cELISAs.
Experimental Study on the Mixing Process of Binary Mixtures in Three-dimensional Fluidized Beds Using Capacitance Probe
Authors: Huang Jikai , Lv Mingming , Duan Lian , Ji Can , Liu Zhigang
Published: August 2022

Measuring the particle mixing parameters at multi positions in
three-dimensional fluidized beds continuously remains a challenging
task. A novel measurement method for the mixing and segregation of
particles inside three-dimensional fluidized beds is developed based on
capacitance probe. The measurement error is generally below 7%. The
particle mixing parameters and dispersion coefficients at
multi-positions of the three-dimensional fluidized bed are acquired. The
effect of convection and diffusion mechanism on particle mixing is
discussed. Results show that the governing mechanism of particle mixing
at center and top of the bed is convection; meanwhile the governing
mechanism for particle mixing at bottom and near the wall is diffusion.
The radial dispersion coefficient at half-radius of the bed is mainly
between 0.0038 and 0.026 m2/s, which is about 1.5 times that near the
wall. The axial dispersion coefficient is mainly between 0.004-0.056
m2/s, which is about 2.3 times that in radial direction.
Measuring Municipal Audit Quality: Focus, Findings, Avenues
Authors: A. Yebba Alfred
Published: August 2022

It is often difficult to establish determinants of governmental audit quality. This discussion explores the motivations of municipalities to invest in auditing and for auditors to deliver quality services within this specialized market. This paper provides a review of governmental audit quality research findings, including measurement of audit quality proxies. The paper also discusses potential future research avenues and suggests several lines of audit-focused research remain open for exploration.
Butyrate-Producing Bacteria and Insulin Homeostasis: The Microbiome and Insulin Longitudinal Evaluation Study (MILES)
Authors: Cui Jinrui , Ramesh Gautam , Wu Martin , Jensen Elizabeth T. , Crago Osa , Bertoni Alain G. , Gao Chunxu , Hoffman Kristi L. , Sheridan Patricia A. , Wong Kari E. , Wood Alexis C. , Chen Yii-Der I. , Rotter Jerome I. , Petrosino Joseph F. , Rich Stephen S. , Goodarzi Mark O.
Published: August 2022

Gut microbiome studies have documented depletion of butyrate-producing taxa in type 2 diabetes. We analyzed associations between butyrate-producing taxa and detailed measures of insulin homeostasis, whose dysfunction underlies diabetes in 224 non-Hispanic Whites and 129 African Americans, all of whom completed an oral glucose tolerance test. Stool microbiome was assessed by whole-metagenome shotgun sequencing with taxonomic profiling. We examined associations among 36 butyrate-producing taxa (n = 7 genera and 29 species) and insulin sensitivity, insulin secretion, disposition index, insulin clearance, and prevalence of dysglycemia (prediabetes plus diabetes, 46% of cohort), adjusting for age, sex, BMI, and race. The genus Coprococcus was associated with higher insulin sensitivity (β = 0.14; P = 0.002) and disposition index (β = 0.12; P = 0.012) and a lower rate of dysglycemia (odds ratio [OR] 0.91; 95% CI 0.85–0.97; P = 0.0025). In contrast, Flavonifractor was associated with lower insulin sensitivity (β = −0.13; P = 0.004) and disposition index (β = −0.11; P = 0.04) and higher prevalence of dysglycemia (OR 1.22; 95% CI 1.08–1.38; P = 0.0013). Species-level analyses found 10 bacteria associated with beneficial directions of effects and two bacteria with adverse associations on insulin homeostasis and dysglycemia. Although most butyrate producers analyzed appear to be metabolically beneficial, this is not the case for all such bacteria, suggesting that microbiome-directed therapeutic measures to prevent or treat diabetes should be targeted to specific butyrate-producing taxa rather than all butyrate producers.
Effect of State-Led Delivery System and Payment Reforms on Population-Level Detection and Management of Diabetes
Authors: Rodriguez Hector P. , Fulton Brent D. , Phillips Aryn Z. , Rubio Karl
Published: August 2022

OBJECTIVE

The Centers for Medicare and Medicaid Services State Innovation Models (SIM) initiative has invested more than $1 billion to test state-led delivery system and payment reforms that can affect diabetes care management. We examined whether SIM implementation between 2013 and 2017 was associated with diagnosed diabetes prevalence or with hospitalization or 30-day readmission rate among diagnosed adults.

RESEARCH DESIGN AND METHODS

The quasiexperimental design compared study outcomes before and after the SIM initiative in 12 SIM states versus five comparison states using difference-in-differences (DiD) regression models of 21,055,714 hospitalizations for adults age ≥18 years diagnosed with diabetes in 889 counties from 2010 to 2017 across the 17 states. For readmission analyses, comparative interrupted time series (CITS) models included 11,812,993 hospitalizations from a subset of nine states.

RESULTS

Diagnosed diabetes prevalence changes were not significantly different between SIM states and comparison states. Hospitalization rates were inconsistent across models, with DiD estimates ranging from −5.34 to −0.37 and from −13.16 to 0.92, respectively. CITS results indicate that SIM states had greater increases in odds of 30-day readmission during SIM implementation compared with comparison states (round 1: adjusted odds ratio [AOR] 1.07; 95% CI 1.04, 1.11; P < 0.001; round 2: AOR 1.06; 95% CI 1.03, 1.10; P = 0.001).

CONCLUSIONS

The SIM initiative was not sufficiently focused to have a population-level effect on diabetes detection or management. SIM states had greater increases in 30-day readmission for adults with diabetes than comparison states, highlighting potential unintended effects of engaging in the multipayer alignment efforts required of state-led delivery system and payment reforms.
Ten-Year Effectiveness of the Multidisciplinary Risk Assessment and Management Programme–Diabetes Mellitus (RAMP-DM) on Macrovascular and Microvascular Complications and All-Cause Mortality: A Population-Based Cohort Study
Authors: Tang Eric Ho Man , Mak Ivy Lynn , Tse Emily Tsui Yee , Wan Eric Yuk Fai , Yu Esther Yee Tak , Chen Julie Yun , Chin Weng Yee , Chao David Vai Kiong , Tsui Wendy Wing Sze , Ha Tony King Hang , Wong Carlos King Ho , Lam Cindy Lo Kuen
Published: August 2022

OBJECTIVE

The Risk Assessment and Management Programme–Diabetes Mellitus (RAMP-DM) is a protocol-driven, risk-stratified, and individualized management program offered by a multidisciplinary team in addition to usual care for primary care patients with diabetes. This study aimed to evaluate the effectiveness of RAMP-DM for preventing complications and mortality over 10 years.

RESEARCH DESIGN AND METHODS

A population-based, prospective cohort study of adult patients with type 2 diabetes managed in the Hong Kong public primary health care system between 2009 and 2010 was conducted. RAMP-DM participants and usual care patients were matched using one-to-one propensity score matching and followed for 10 years. Risks of macrovascular and microvascular complications and all-cause mortality were estimated by Cox proportional hazards regression.

RESULTS

A total of 36,746 patients (18,373 in each group) were included after propensity score matching, with a median follow-up of 9.5 years and 306,802 person-years. RAMP-DM participants had significantly lower risks of macrovascular (hazard ratio [HR] 0.52, 95% CI 0.50–0.54) and microvascular (HR 0.68, 95% CI 0.64–0.72) complications and all-cause mortality (HR 0.45, 95% CI 0.43–0.47) than patients who received usual care only. However, the effect of RAMP-DM on macrovascular and microvascular complications attenuated after the 9th and 8th year of follow-up, respectively. RAMP-DM participants also showed better control of hemoglobin A1c, blood pressure, triglycerides, and BMI and a slower decline in renal function.

CONCLUSIONS

Significant reductions in diabetes-related complications and all-cause mortality were observed among RAMP-DM participants over a 10-year follow-up, yet the effect of preventing complications attenuated after 8 years.
Hantken Miksa és a magyarországi jura ammoniteszkutatások kezdetei
Authors: Galácz András
Published: August 2022

Hantken Miksa pályája elején az ammoniteszekről kora geológusainak átlagos ismereteivel bírt. Elsőként gyűjtött bakonyi jura ammoniteszeit még Bécsbe vitte meghatározásra. Terepi munkálkodásai során – elemi mikropaleontológiai érdeklődése mellett – egyre jobban kezdték érdekelni az ammoniteszek, amit gyűjtései jeleznek. Tekintélyes ammonitesz-anyagot halmozott fel a Gerecséből, a Bakonyból, de távolabbi lelőhelyekről, például Villányból és az al-dunai Swinitzáról, de külföldről is. Bár ammoniteszekről csupán egyetlen rövid dolgozata jelent meg, ez azonban tartalmazza azt a felismerést, hogy a bakonycsernyei ammoniteszek tekintélyes része a Mediterrán jura területén az akkor alig ismert aaleni – kora bajóci faunát képviseli. Nekilátott az anyag feldolgozásának. Huszonöt kőnyomatos táblát készíttetett, az ammoniteszek egy részéről jegyzeteket, leírásokat, összehasonlításokat írt, új fajokat nevezett el. Sajnos a munkát egyetemi elfoglaltságai, majd hirtelen halála miatt nem fejezhette be. Gazdag gyűjteményei viszont alapját képezték a magyarországi jura ammoniteszekről írott három legfontosabb, a szakirodalom által is kiemelkedő jelentőségűnek tartott munkának: Prinz Gyula (1906) és Géczy Barnabás (1966-67) csernyei, és ifj. Lóczy Lajos (1915) villányi monográfiájának. Bakonycsernyei ammoniteszekről és mikrofauna elemekről a legutóbbi időkben is közzétett publikációk azt mutatják, hogy az Őslénytani Tanszéken elevenen él a tanszék alapítója teremtette hagyomány.
Tratamento tardio de fratura de sínfise mandibular por abordagem extraoral – relato de caso
Authors: Almeida Henry Mcarter Senra , Rodrigues Rafael Drummond , da Rocha Andressa Teixeira Martiniano , dos Santos Elias Almeida , Barboza Alana Del’Arco , Maranhão Samario Cintra
Published: August 2022

Fractures in the mandibular symphysis region can occur in isolation or in association with condylar fractures, since the force on this region can result in an indirect fracture of the condyles. These, when not adequately addressed, can lead to pseudoarthrosis, increasing the complexity of the treatment. Thus, this article aims to report a clinical case of late treatment of symphysis and mandibular condyle fractures. Male patient, 22 years old, with a history of motorcycle accident. On physical examination, atypical jaw mobility and occlusal dystopia were observed. The image examination confirmed a misaligned fracture in the mandibular symphysis, as well as a low unilateral condyle fracture. That said, the surgical approach to the symphyseal fracture, reduction and fixation, were performed. Anatomical reduction and adequate internal fixation are essential to achieve good fracture healing. For treatment of mandibular fractures, two forms of treatment can be used: closed reduction or open reduction with internal fixation. Different techniques can be used in the symphysis region, such as reconstruction plates, miniplates, and lag screw. The association of the techniques is also indicated, being able to use a compression plate of the system 2.4 in the basilar zone and a mini-plate of the system 2.0 to avoid distraction of the stumps. Mandibular fractures, when not addressed early, can result in inadequate consolidation, making the approach challenging and requiring extraoral approaches with association of fixation techniques that present greater stability.
Automated UAV to Survey and Monitor Ionising Radiation Levels in a Closed Environment
Authors: Anand R. , Harshith Kumar M. B. , Raghavan Anirudh , Maddara Roopak , Anand Prajna
Published: August 2022

Since tragedies caused by nuclear disasters are always a concern, it is essential that nuclear power plants be monitored on a regular basis for any irregularities in ionising radiation levels. Irrespective of leakage proof measures being deployed in the plant, ensuring the safety of these measures is necessary. Given this scenario, the present study proposes the usage of unmanned aerial vehicles (UAVs) to ensure that radiation levels in nuclear plants remain within safe limits. The UAV deployed will map the entire environment following a unique path planning algorithm and monitor the environment with an onboard radiation sensor. If any irregularities are detected, the positional coordinates are flagged, and the A* algorithm is implemented to generate the shortest path between the starting point, and the flagged coordinates, which are considered as the destination coordinates. The UAV is made to traverse the shortest path together with maintaining stability of the system while traversing.
Lavrados e cordéis
Authors: Oliveira Rodrigo Leonardo Costa de
Published: August 2022

Lavrados e Cordéis', de Rodrigo Leonardo Costa de Oliveira nos apresenta o olhar daquele que está desvendando acontecimentos, paisagens, mitos: a cotidianidade de uma região. Mas a revelação se dá aqui mais como modo de interpretação do ambiente roraimense do que como a sua verdade. A relação entre as figuras da escrita é movida pelas preferências que indicam o sujeito da escrita e o ambiente em que se encontra. Esse ambiente projeta a subjetividade para além dos seus limites: em direção à descoberta e á criação da poética cordelística que promove, ao mesmo tempo, uma releitura tanto da história e cultura da região, como da literatura brasileira.
Occurrence of Oligochaeta species (Annelida: Clitellata) in Rivers in the State of São Paulo (Brazil)
Authors: Futenma de Lima Mariana , Aparecido Girolli Douglas , Aparecida de Oliveira Sanches Nathalie , José Corbi Juliano , Rossi Gorni Guilherme
Published: August 2022

The knowledge about the diversity and fauna distribution in tropical freshwater ecosystems is of extreme ecological importance, however studies on this theme still scarce. Organisms belonging to the Oligochaeta Class are considered important bioindicators for environmental quality analysis, but detailed knowledge about these organisms is still insufficient. This study aims to investigate the occurrence of oligochaeta species in eight rivers of the State of São Paulo (Brazil), to expand the species catalogue and identify the its relationship with the trophic state of sampled environments. The samples were collected by the Environmental Company of the State of São Paulo (CETESB) from 2014 to 2016 and include areas with different land uses, ranging from conservation, agricultural and industrial. We used species richness estimator (Bootstrap) and accumulation curves of randomized species (collector curve), in order to evaluate the efficiency of samples collected. Rivers were classified according to the trophic state, ranging from oligotrophic to hypereutrophic. As a result, we identified a total of 7,398 oligochaetes distributed in 25 taxa, which belong to the families: Alluroididae, Naididae and Opistocystidae. The most frequent species registered in this research, present in seven of the eight sampled rivers was Bothrioneurum sp., followed by Pristina synclites registered in six of the eight sampled rivers.
Friend or Foe? Re-visioning Friendships Beyond Borders
Authors: Ali Zaynab
Published: August 2022

Destruction is transnational: homes, places of worship, healing and community are annihilated and the landscapes of counties are altered. Meanwhile, civilians are left to grapple with their new realities. However, the attention afforded to these disasters varies depending on factors of race, ethnicity, creed, and nationality—the ties that are held dear are the very bonds that determine friends from foes. In most cases, however, news of violence is met by indifference. Individuals are unable to empathize with strangers whose lives are being shattered. This paper analyzes Atiq Rahimi’s Earth and Ashes (1999/tr.2002) in order to argue that the vehicle transporting one away from apathy is a re-visioning of friendship. Questions of focus include, how is empathy formed for those who are long-gone, or for those whose faces one cannot see? And how can friendship help bridge this gap? An ethical turn to analyzing friendships that can forge connections around the world requires a “re-visioning” of what it means to be a witness to another’s distress as outlined by Oliver Kelly in Witnessing: Beyond Recognition and Michel Foucault’s “Friendship as a way of Life.”

In Earth and Ashes transit and re-visioning operate on two levels: physically across an unforgiving landscape to the coal mines, and emotionally through death and destruction to the eventual acceptance of infinite loss. This paper argues that progress down the road and past the checkpoint is enabled by fleeting relations working as vehicles: Dastaguir befriends a shopkeeper, a fellow bus passenger, and a servant who help facilitate his passage through the hazardous landscapes of war and trauma. As witnesses to Dastaguir’s transit, these friends help catalyse, and cauterise, exile from family, community, safety—from life itself until an ethical re-visioning of friendships beyond borders can occur.
EDUKASI ANEMIA SEBAGAI PENCEGAHAN PRIMER STUNTING PADA REMAJA PUTRI DI KELURAHAN PASIE NAN TIGO KECAMATAN KOTO TANGAH KOTA PADANG
Authors: Neherta Meri , Fajria Lili , Sari Ira Mulya , Herien Yelly , Sari Novita , Wahyuningsih Sri , Kamilah Safiyah , Rezky Mutia , Anggraini Rini
Published: August 2022

Anemia pada remaja putri sangat berbahaya baik untuk jangka waktu pendek maupun untuk jangka waktu panjang. Jika terjadi dalam jangka waktu panjang, setelah menjadi ibu akan merugikan kepada bayinya di masa depan nanti. Bayi dari ibu anemia akan cenderung melahirkan bayi prematur kelak dimasa produktif remaja tersebut. Bayi yang lahir dari remaja anemia sangat beresiko untuk terjadinya malnutrisi, selanjutnya stunting. Tujuan dari pendidikan kesehatan ini adalah untuk pencegahan anemia pada remaja putri sebagai pencegahan primer stunting pada balita. Pelaksanaan kegiatan ini dilakukan melalui 4 tahapan: analisa situasi, persiapan kebutuhan pelaksanaan kegiatan dan evaluasi kegiatan. Kegiatan pendidikan kesehatan tentang pencegahan anemia diikuti oleh 50 orang remaja putri dengan kriteria konjungtiva pucat dan sering merasa pusing. Alat ukur yang dipakai adalah kuisioner. Hasil kegiatan ini secara umum dapat meningkatkan pengetahuan remaja putri tentang anemia sebesar 76 %. Pengetahuan yang baik sebelum kegiatan hanya sebesar 20%, setelah kegiatan meningkat menjadi 96%. Sedangkan pengetahuan yang kurang sebelum kegiatan sebesar 80%, setelah kegiatan hanya menjadi 4%. Pendidikan kesehatan yang diberikan kepada remaja putri dapat meningkatkan pengetahuan pada remaja putri. Diharapkan remaja putri dapat selalu mengkonsumsi makanan seimbang dan tablet tambah darah serta menyebarkan informasi ini kepada remaja putri lainnya. Kepada pihak puskesmas setempat untuk memberikan edukasi secara rutin setiap melakukan kegiatan posyandu remaja.
PENGEMBANGAN LEGUMINOSA INDIGOFERA SEBAGAI PAKAN TERNAK DI NAGARI BATU PAYUNG KECAMATAN LAREH SAGO HALABAN KABUPATEN LIMA PULUH KOTA
Authors: Sari Yesi Chwenta , Nanda Syafri , Mardiah Fatma Poni , Yunita Roza
Published: August 2022

Indigofera is a legume that can be used as forage for livestock. Leguminosa is a type of tree and shrub-shaped plant that contains higher protein than ordinary grass. Indigofera legumes have several advantages including high productivity, adaptability to low soil fertility, easy and inexpensive maintenance. This activity aims to transfer knowledge to farmers regarding the potential development of Indigofera legumes as quality animal feed and provide Indigofera legume seeds to be developed by members of farmer-livestock groups. This activity is a Community Service which was carried out at the Ambacang Permai livestock farmer group, Nagari Batu Payung, Lareh Sago Halaban District, Lima Puluh Kota Regency. The method used in this activity is counseling and socializing the potential of Indigofera legumes, as well as question and answer discussions regarding the development and how to plant Indigofera legumes. The results of this activity have provided additional knowledge for farmers in Nagari Batu Payung, Lareh Sago Halaban District regarding the potential for the development of Indigofera legumes because so far farmers only provide grass as animal feed. From the activities that have been carried out, it can be concluded that farmers in Nagari Batu Payung, Lareh Sago Halaban District are very helpful because through this activity farmers know the potential, how to plant and develop Indigofera as cattle feed. Breeders gave a positive response to the activities that had been carried out and hoped that Andalas University could assist independent groups in developing their cattle farming business.
Perfil epidemiológico e correlação entre comorbidades com o tempo de internação, desfecho e necessidade de ventilação invasiva em indivíduos com Covid-19 em um Hospital de referência do estado do Pará, Brasil
Authors: Barros Helton Monteiro , Dillon Alex de Oliveira , Rosas Junior Francisco Ipslon Terezo , Sarmanho Natália Barata , Brito Caio Vinícius Botelho
Published: August 2022

Objetivo: Traçar perfil epidemiológico e comparar tempo de internação, desfecho e necessidade de ventilação invasiva em pacientes com comorbidades e aqueles sem comorbidades em indivíduos internados devido a COVID-19 em um hospital de referência do estado do Pará, Brasil. Métodos: Trata-se de um estudo transversal descritivo, conduzido com a análise de 67 prontuários de indivíduos, de ambos os sexos. Foram coletados dados de sexo, faixa etária, comorbidades, tempo de internação, desfecho e uso de ventilação invasiva (VI), esses dados estratificados e correlacionados isoladamente e entre si: presença ou não de comorbidade, desfecho, tempo de internação x Hipertensão Arterial Sistêmica (HAS) x desfecho, tempo de internação x Diabetes x desfecho, VI x HAS e VI x Diabetes. Os dados obtidos foram analisados por estatística descritiva com auxílio do software Biostat 5.3. O estudo foi aprovado por Comitê de Ética em Pesquisa. Resultados: Amostra revelou que metade dos pacientes possuíam comorbidades, e, dentre todos, 58% receberam alta e 25% morreram. Enquanto aqueles com comorbidades permaneceram mais tempo internados, foram os que mais morreram e necessitaram de VI. Conclusão: Foi possível estabelecer uma correlação entre doentes crônicos e seus desfechos. Porém, ainda é precário o preenchimento correto dos prontuários, sendo inúmeros os inutilizáveis.
Combining photochemical transformation of pyridinium salt with kinetic enzymatic resolution towards the total synthesis of (-)-agelastatin A
Authors: Mateus Afonso Carlos Alberto , Vale João Rafael , Fortunato Milene , Andrade Késsia , Siopa Filipa
Published: August 2022

Agelastatin alkaloids were synthesized through early-stage construction of the synthetically challenging C ring via photochemical transformation of pyridinium salts. Kinetic enzymatic resolution of bicyclic vinyl aziridines allowed the synthesis of (-)-agelastatin A in 4% yield over 12 steps. The cytotoxicity of (±)-agelastatin A and two N3-derivates were tested against a series of cancer cell lines to evaluate the impact of N3-substituition of the biological activity of agelastatin derivatives and corroborated the importance of unsubstituted N3 in the cytotoxicity of (-)-agelastatin A.
On the Mercuration, Palladation, Transmetalation and Direct Auration of a C^N^C Pincer Ligand
Authors: McEllin Alice Jane , Whitwood Adrian , Lynam Jason , Bruce Duncan
Published: August 2022

The C^N^C ligand 2,6-bis(2,3,-dialkoxyphenyl)pyridine forms dimercury and orthopalladated complexes, both of which may be transmetallated to gold(III) complexes; the gold complexes may also be formed directly in a Rh(III)-catalysed process, hence it is possible to circumvent the use of organomercury intermediates in the synthesis of this important class of compound.
Methodology for risk management in dams from the event tree and FMEA analysis
Authors: Fernandes Rafaela , Sieira Ana Cristina , Menezes Filho Armando
Published: August 2022

Some studies that analyze the risk of dam failures estimate that between 2016 and 2025 about 30 major tragedies should be expected. Failure records between 1900 and 2014 indicate that there is an average of three ruptures every two years, considering only the failures that were officially registered and investigated. It can be said that the potential for dam failures will be driven by the economy, since cost has been the main variable considered in the design, construction, operation, monitoring and closing plan of these structures. As companies reduce investments in maintenance, risk management and failure prevention, there is an incentive for economic recovery, competitiveness of product value and debt reduction, required by investors. The result has been a decrease in specialized labor, to the point that companies no longer have sufficient knowledge about the engineering and operational skills that apply to tailings and water management. Learning from the dams’ tragedies is practically non-existent, in Brazil and worldwide, leading to catastrophic environmental and social consequences. Failures will occur as long as they are viewed and treated as unpredictable, thereby lacking risk management. The proposed risk management method, presented in this paper, considers the information of inspection and instrumentation, identifying risks from event trees, separately, intolerable, tolerable and acceptable risks. The intolerable risks are conducted for FMEA-type failure analysis, where severe, intermediate and mild failures are assessed. The objective is to enable the development of an assertive and effective action plan for dam safety management.
Tourist Motivation as an Antecedent of Destination and Ecotourism Loyalty
Authors: Hoang Sinh Duc , Pham Tien Phat , Tučková Zuzana
Published: August 2022

Objective: This study evaluates the role of tourist motivation in the determination of destination and ecotourism loyalty using push and pull motivation theory and the theory of planned behavior. The paper also analyses the mediating effects of satisfaction and destination image in the relationships between motivation and the two types of loyalty. Method/analysis: Primary data has been gathered from surveys involving 522 Vietnamese tourists traveling to the Bohemian Switzerland National Park in the Czech Republic. Data analysis was conducted using structural equation modeling (SEM) techniques in R. Findings: The findings support both direct and indirect positive associations between tourist motivation and destination and ecotourism loyalty. In terms of ecotourism loyalty, the effect is mediated by destination image. In terms of destination loyalty, the effect is mediated by satisfaction and destination image. Novelty/improvement: This study has further expanded the theory of planned behavior in the context of ecotourism by linking it to travel career pattern theory and functionalist theory. These are complementary theories that can explain the behavior of ecotourists and help operators and marketers adjust their strategies to attract and retain visitors to ecotourist destinations. Doi: 10.28991/ESJ-2022-06-05-014 Full Text: PDF
Potencial agroecológico de Moringa oleifera Lam. para el estado de Veracruz
Authors: Carrión Juan Manuel , Valdés Rodríguez Ofelia Andrea , Gallardo López Felipe , Palacios Wassenaar Olivia Margarita
Published: August 2022

Moringa oleifera (moringa) es una especie multipropósito con aplicaciones alimentarias y medicinales. El objetivo de esta investigación fue delimitar las áreas con potencial agroecológico para el cultivo de moringa en el estado de Veracruz, México. Para ello, se utilizó una zonificación agroecológica que integra datos científicos y georreferenciados sobre sus requerimientos agroclimáticos, los usos de suelo y la localización de comunidades urbanas, mediante Sistemas de Información Geográfica (SIG). Los requerimientos agroclimáticos para el cultivo de moringa derivaron de dos fuentes de datos: una bibliográfica, con publicaciones científicas y bases de datos oficiales; y otra que integró datos georreferenciados, entrevistas semiestructuradas y recolecta de muestras de suelo. Se definieron los criterios para la identificación de áreas potenciales y se construyó un SIG para generar los mapas de las áreas con potencial agroecológico para el cultivo de moringa con cinco categorías: Muy alto, Alto, Medio, Bajo y Muy Bajo. Los mapas del potencial agroecológico incluyeron solo la superficie categorizada por el Instituto Nacional de Estadística y Geografía como de uso agropecuario. Los resultados indican que el espacio territorial con muy alto potencial tiene una extensión de 1 008 119 ha, equivalente a 18 % del territorio total disponible en 37 % de los municipios de la entidad. Se concluye que el estado de Veracruz tiene condiciones agroecológicas óptimas para el cultivo de M. oleifera en gran parte de su territorio, y que la incorporación de la información obtenida de los productores locales es importante para definir las áreas con potencial para su plantación.
Pengembangan Perangkat Pembelajaran Model Generatif Untuk Meningkatkan Hasil Belajar Fisika Peserta Didik
Authors: Efendi Nyena , Gunawan Gunawan , Busyairi Ahmad
Published: August 2022

The purfose of this study is to determine the feasibility of the learning tools based generative. This type of research is research and development that refers to a 4-D model which consists of four stages of development, namely define, design, develop and disseminate. The learning tools developed in this research are syllabus, RPP, teaching materials, LKPD, and cognitive learning outcomes test instruments. This research is limited to the content and construct validation stage of learning devices. Validation is carried out by the validator using a validation test instrument in the from of a questionnaire. The results of the validation of learning tools in the form of syllabus, RPP, teaching materials, LKPD, and cognitive learning outcomes test instruments werw obtained in the valid category. Based on the results and discussion of this research, it can be concluded that the learning tools developed are suitable for us in high school physics learning activities.